CA2034140C - Direct current relay especially for railway type signalling systems - Google Patents
Direct current relay especially for railway type signalling systemsInfo
- Publication number
- CA2034140C CA2034140C CA002034140A CA2034140A CA2034140C CA 2034140 C CA2034140 C CA 2034140C CA 002034140 A CA002034140 A CA 002034140A CA 2034140 A CA2034140 A CA 2034140A CA 2034140 C CA2034140 C CA 2034140C
- Authority
- CA
- Canada
- Prior art keywords
- relay
- contact members
- moving
- core
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
Abstract
A direct current relay is disclosed, which is especially fit for railway type signalling systems. The said relay com-prises a core (7) extending horizontally through a coil (8), an iron yoke (6) disposed above the core (7), and fixed to the core fore end, and extending along the coil (8) to the core rear end, an armature (11) pivotally mounted at the free end of yoke (6), in front of the corresponding rear end of core (7), and sets of moving and stationary contact mem-bers (C1, C2, C3, C4, C5) carried by moving and stationary, elastically flexible strips (24) which project in superpos-ed and reciprocally spaced relationship from a contact carr-ier block fixed on the yoke (6). The free ends of the moving strips (24) are engaged with a vertically movable contact operator template (17) operatively connected with the arma-ture (11) for movement of the moving strips, to cause the moving contact members (C1, C2) to be moved into or out of electrical contact with the stationary contact members (C3, C4, C5) when the relay is energized. The moving and station-ary contact members are situated above the fore end of the yoke (6). Two counterweights (16) respectively arranged on either side of coil (8) are provided, which are operatively connected with the armature (11) for moving the same into rest position when the relay is de-energized.
Description
4~
DIRECT CURRENT RELAY ESPECIALLY FOR RAILWAY TYPE
SIt'.NAT.T.TNC, SYSTEMS
SUMHARY OF THE INVENTION
The invention relates to a direet current relay whieh is especially fit for railway type signalling systems, and comprises a core extending horizontally through a coil, an iron yoke disposed above the core and fixed to the one end (fore end) of the eore, the said yoke extending along the 15 coil to the opposite end (rear end) of the core, an armature pivotally mounted at the free end of the yoke, in front of the corresponding rear end of the core, and sets of:` moving and stationary contact members carried by moving and sta-tionary, elastically flexible strips which project in super-20 posed and reciproeally spaced relationship from a contactcarrier block fixed on the yoke, the free ends of the moving strips being engaged with a vertically movable contact oper-ator template operatively connected with the armature for movement of the moving strips, to cause the moving contact 25 members to be moved into or out of electrical contact with the stationary contact members when the relay is energized.
The invention aims to provide a relay of the type as disclosed at the outset, which has a reduced depth dimen-sion, combined wit~l a very good possibility of visually in--- 2 -- *
_ . .. . _ ~341~
specting the contact members, and with a simplification ofthe magnetlc circult. The object of the invention further-more ls to simplify also the contact members unit, while en-suring a strengthening of the same. A further ob~ect of the 5 invention resides in improving the ID/IE de-energlzlng ratio so as to make the same higher than 0,6, and in improving the ` anchorage of the coil terminals to the sectioning taps by means oi~ plug-in sectioning contact members.
The invention attains these objects by the provision of a relay of the type as disclosed at the outset, character-ized by the combination of the following features:
a) two counterweights are provided, which are opera-tively connected with the armature for moving the same into 5 rest posltion when the relay is de-energized, b) the moving and stationary contact members are situa-ted in the area above the fore end of the yoke, c ) the said counterweights are respectively arranged on either side of the coil, in such a position that does not 0 impede the visibility of the contact members.
According to a further feature of the invention, the re-lay is formed by three pre-made and preset parts which are connected together at the time the relay is assembled, and 25 which respectively consist in a die-cast body of the relay, in a magnetic circuit unit with a plate for the sectioning front sockets and in a contact members unit.
The said relay components are then covered with a pre-~0 ferably self-extinguishing, transparent plastics materLal casing, with its front end side being so made as to be rearwardly ; n~-l; ne~l in its upper portion which is associated with the contact members unit.
The handle element is formed directly on the casing 5 front end side, and is situated at the rearwardly ;nr~;nF,~l upper portion of the casing front end side.
Advantageously, the front end side of the handle element handle part does not protrude beyond the f ront plane delimiting the maximum overall dimensions of the relay, and 10 the said plane is defined by the front end surfaces of sectioning plugs associated with the sectioning sockets.
Preferably, the upper contact members are fitted with contact pieces of carbon or, as an alternative, of a graphite and silver alloy.
According to a broad aspect of the present invention there is provided a direct current relay especially designed for raiIway type signalling systems. The relay comprises a core extending horizontally through a coil, an iron yoke disposed above the core and f ixed to the one end of 20 the core_ The yoke extends along the coil to the opposite end of the core. An armature is pivotally mounted at the free end of the yoke in front of the corresponding rear end of the core. Sets of moving and stationary contact members are carried by moving and stationary, elastically f lexible 25 strips, which project in superposed and reciprocally spaced relationship from a contact carrier block fixed on the yoke.
The free ends of the moving strips are engaged with a vertically movable contact operator template operatively connected with the armature f or movement of the moving strips 30 to cause some o~ the moving contact members to be moved into or out of electrical contact with some of the stationary contact members when the relay is energi2ed. The direct current relay is characterized in that two counterweights are provided, which are operatively connected with the armature 35 for moving the armature into rest position when the relay is ~, de-energized. Some of the moving and stationary contact members are situated in the area above a ~ore end of the yoke. The counterweights are respectively arranged on either side of the coil in such a position so as to make some of the 5 contact members visible.
Also other features further improving the above disclosed relay form the object of the invention.
The particular features of the invention and the advantages arising therefrom will appear more in detail from 10 the specification of one preferred embodiment thereof, which is shown by way of a non-limiting example in the accompanying drawings, in which:
Figure 1 is a side view of the relay according to the invention.
Figure 2 is a view showing a vertical longitudinal section through the relay according to Figure 1.
Figure 3 is a top view of the relay according to Figure 1.
Figure 4 is a view showing the front end side of the relay ~ c~r~l; ng to Figure 1.
Figure 5 is a cross-sectional view of the relay according to Figure 1.
Figure 6 is a view showing the front end side of the relay according to Figure 1.
Figure 7 and 8, which appear out of sequence on the same sheet aæ Figure 3, are views showing some details of the support f or the armature of the relay according to Figure 1.
Figure 9 is an exploded side view of the relay according to Figure 1, showing its pre-made three parts in disassembled condition.
Referring to the Figures, there is shown that the relay according to the invention, substantially consists of three ,_ _ 5 _ 2~3~140 parts, i.e., a supporting body 1 made of a die-cast metallic material, on which the magnetic circuit unit 2 and the con-tact members unit 3 are fitted (see Figure 9). The contact members unit 3 and the magnetic circuit unit 2 are in form 5 of so pre-made pieces, that the same can be assembled in an extremely easy and accurate manner.
The supporting body 1 consists of a vertical plate 101 forming the rear end side of the relay, and which is to be 10 connected with a not shown plug socket board to be fixedly fitted into a wiring board. The vertical plate 101 is pro-vided in its median area with a horizontal wing-like support 201. Immediately under the horizontal wing-like support 201, two guide sleeves 4 are fixedly connected to the vertical 15 plate 101, and are arranged in a parallel and horizontally coplanar relation, respectively at either side of the hori-zontal wing-like support 201. Each guide sleeve 4 extends up to the rear side of the vertical plate 101, and is caused to protrude from the front end side of the relay. The two 20 guide sleeves 4 are to be fitted on two associated, sleeve-supporting pins (not shown), which are secured to the plug socket board fitted in the wiring board.
The magnetic circuit unit 2 is secured to the lower side 25 of the horizontal wing-like support 201 by means of screws 5 threaded into an L-shaped platelet 6 which constitutes the iron yoke of the relay at the front end side of the core 7 of coil 8, and which is secured to the core front end side by means of screws 9. The opposite pole at the rear end side ~50 of the core 7 is provided with a pole piece 10 that by a 203~1 4~
certain air gap which is adjustable by means of screws 12, 13, is separated from the armature 11. The armature 11 is supported on the rear end of the yoke 6, so as to be swinga-ble around a hori~ontal axis, which is transversal to the 5 core 7. By means of two transverse upper grooves formed in the side edges of armature 11, the said armature is swing-ably engaged with the respective one of two wing-like sup-ports 14. The wing-like supports 14 are rixed to the rear end of the yoke 6, and preferably consist of two opposite, lO laterally extending arms of a U-shaped platelet. By means of the two air gap-adjusting screws 12, 13 the width of the air gap in the energized and in the de-energized condition of the relay, is respectively established.
Particularly in Figures 5, 6, 8, and 9, there clearly appears that the armature 11 carries at both of its sides an arm 15 extending to the front region of the relay, and hav-ing a downward extension 115 to which a counterweight 16 is respectively attached. The counterweights 16 promote the 20 torque for the armature 11 to be returned into rest position when the relay is de-energized, and always ensure a determi-nate stable position of the moving contact members, should the input current fail. These counterweights are each ar-ranged on the respective side of coil 8, at the level of the 25 same. Each arm 15 is provided at its fore end with an upward extension 215 which protrudes beyond the free fore ends of the contact members in unit 3, and which is engaged with a contact operator template 17 for shifting the moving contact members, which in the Figures are designated by references C1, C2. More particularly, each one of the two arms 15 is 2~3ql4~
essentially formed by one-half of a frame substantially hav-ing a rectangular shape, wlth its rear end side being fas-tened to the armature 11, while the front end side thereof forms the upward extension 215, and is engaged with the con-5 tact operator template 17 for shifting the moving contactmembers C1, C2, which for this purpose is provided in the lower zone of each one of its side edges with a groove 117 for the said upward extension to be fitted therein.
The coil 8 may be made in any suitable manner, and may, for example, consist of three separate coils sequentially arranged about the core 7. The coils 8 are wound on a reel 18 of insulating plastics material. In this case, the coil 8 is suïtably divided into three successlve coil sections. The 15 coils 8 can be interconnected so as to achieve the required operative mode of the relay. At the front end side of the magnetic circuit unit 2, i.e., at the front end side of the yoke 6, the magnetic circuit unit 2 carries an insulating plastics material element 19 in which the conductors for 20 feeding each coil 8 are each connected to sectioning sockets 20, whereby it is possible to have a metering made for test-ing the coils 8, and to have the coils 8 connected to each other in the desired manner by means of sectioning plugs 21.
With the magnetic circuit unit 2 being in its assembled con-25 dition, the plastics material element 19 is clamped onto thefree ends of the suitably threaded sleeves 4 by means of tab washers 22 (see Figure 1), since this element is formed with matching holes. The said element 19 is also engaged on the sides of sleeves 4 by means of a respective lateral exten-sion 119. The not shown conductors for feeding the coils 8 21~ 4~
are passed into conductor-hous$ng grooves 219, which are made in the external side edges of the plastics material element 19, and in its lateral extensions 119. Preferably, the conductors for feeding the coils 8 are anchored to the 6 respective sockets 20 by means of plug-in contact members ( no t sh own ) .
The contact members unit 3 comprises a contact carrier block which by means of screws 23 is secured to the upper lO side Or the horizontal wing-like support 201 in the body l of the relay. The contact members unit 3 consists of elas-tically flexible conductive strips 24 arranged in more par-allel planes. The strips 24 in each horizontal plane are set in an equispaced relation and are separated from the strips 15 24 in the ad~acent plane by a suitably shaped insulating layer 25 of plastics material, preferably of polycarbonate.
The conductive strips 24 which are all set in a vertically aligned relation, carry the moving contact members C1, C2 and the stationary contact members C3, C4, C5, and also form ZO the conductors 24' for feeding the coils 8. The conductive strips 24 carrylng the stationary contact members C3, C4, C5 and the conductive strips 24 carrying the associated, moving contact members C1, C2 extend to the front end side region of the relay. The conductive strips 24 carrying the station-25 ary contact members C3, C4, C5, end at a short distance fromthe contact operator template 17, while the conductive strips 24 carrying the said moving contact members C1, C2, are engaged by means of axial extensions thereof, in an as-sociated slot 217 provided in the contact operator template ~0 17, so that as a result of said template 17 being vertically _ g _ ~Q3414~
moved, the strips 24 carrying the moving contact members C1, C2, are bent toward the respective stationary contact mem-bers C3, C4, C5. The conductive strips 24' forming the con-ductors for feeding the coils 8, extend outwardly from the 5 rear end side of the contact members unit 3, substantially in the median zone of said unit, and the flexible cables 29 for feeding the coils 8 are attached to the ends of the con-ductive strips 24 ' by means of plug-in connectors 12g . The conductive strips 24, 24 ' have their rear ends proJecting lO from the rear end side of the contact members unlt 3, and through a respectlve opening 301 in the vertical plate 101 of the supporting body 1, the said strips rear ends are caused to stick out of the rear side of the said vertical plate 101, whereby plug-in contact members are thus formed 15 in plate 101, for cooperation with contact clips ln the not shown plug socket board. The contact operator template 17 associated with the moving contact members C1, C2, is made particularly of insulating, transparent plastics material, and as for what concerns the contact members C1-C5, which 20 are situated in a forwardmost position in the area of the front end side of the relay, the said template 17 ensures a perfect visibility of the said contact members from the out-side. This renders it possible to quickly and reliably make any required inspection of the relay.
~6 According to a further feature of the invention, the contacts are made by means of pieces of a material having unweldability properties. More particularly, the upper sta-tionary contact members C3, C5 are preferably fitted with contact pieces of carbon, or of a grapite and silver alloy.
2~3~0 .
The relay is enclosea, so as to be isolated from the ex-terior, in a preferably self-extinguishing, transparent plastics material casing 26. This casing is open at its rear end side, and with the interposition of an annular seal 27, 5 the same is clamped against an adequate seating means in the vertical plate 101 of the supporting body 1. Two holes 126 are formed in the front end side of casing 26 for the guide sleeves 4 to be respectively passed through the said holes 126, and by means of tab washers 28 the said casing is 10 fastened to the said sleeves. The front end side of casing 26 has a substantially vertical lower portion that extends for the most over the area in which the magnetic circuit un-it 2 is located. The lower vertical portion of the front end side of casing 26 is provided with slots 226 coinciding with 15 the sectioning sockets 20 in the magnetic circuit unit 2, and this vertical portion is caused to substantially bear against the plastics material element 19. Above the holes 126 for the guide sleeves 4 to be passed therethrough, the said vertical lower portion of the casing front end side is 20 connected to an upper portion thereof, which is inclined to-ward the rear end of the relay. Apart from improving the contact members C1-C5 visibility conditions, the said in-clined upper portion of the front end side of casing 26 al-lows a handle element 30 to be provided thereon, which pro-25 ~ects from the front end surface of caslng 26 by a very lim-ited extent, particularly not beyond the maxlmum overall di-mensions of the relay, as defined by the sectioning plugs 21, the handle part of the said handle element 30 being all the same graspable from its back side by the fingers of an ~30 operator ' s hand. In this embodime~lt, the handle element 30 -2~3~
is formed directly on the casing front end side, and its handle part 230 is in form of an upwardly turned vertical arm which extends at a short distance from the front end side of casing 26, near to the inclined portion of the said 5 caslng front end side.
The advantages of the relay according to the invention, clearly spring out from the above disclosure and from the drawings. Primarily, thanks to the devised, particular con-lO struction, a relay having a smaller width dimension, is pro-vided. The partlcular arrangement of the counterweights 16 promoting the torque for the armature 11 to be returned into rest position when the relay is de-energized, allows to more rationally separate the magnetic circuit unit 2 from 15 the contact members unit 3, and to situate the contact mem-bers in the front region of the relay, near to the front end side of the transparent casing, whereby the visibility of said contact members from the outside is thus improved. ~he above disclosed constructional features lastly permit to 20 have the relay, according to the invention, formed by three pre-made and preset pieces that are quickly and simply con-nectable, with their relative positions being extremely pre-cise and stable, and being such as to ensure uniform and constant characteristics.
t~
~0
DIRECT CURRENT RELAY ESPECIALLY FOR RAILWAY TYPE
SIt'.NAT.T.TNC, SYSTEMS
SUMHARY OF THE INVENTION
The invention relates to a direet current relay whieh is especially fit for railway type signalling systems, and comprises a core extending horizontally through a coil, an iron yoke disposed above the core and fixed to the one end (fore end) of the eore, the said yoke extending along the 15 coil to the opposite end (rear end) of the core, an armature pivotally mounted at the free end of the yoke, in front of the corresponding rear end of the core, and sets of:` moving and stationary contact members carried by moving and sta-tionary, elastically flexible strips which project in super-20 posed and reciproeally spaced relationship from a contactcarrier block fixed on the yoke, the free ends of the moving strips being engaged with a vertically movable contact oper-ator template operatively connected with the armature for movement of the moving strips, to cause the moving contact 25 members to be moved into or out of electrical contact with the stationary contact members when the relay is energized.
The invention aims to provide a relay of the type as disclosed at the outset, which has a reduced depth dimen-sion, combined wit~l a very good possibility of visually in--- 2 -- *
_ . .. . _ ~341~
specting the contact members, and with a simplification ofthe magnetlc circult. The object of the invention further-more ls to simplify also the contact members unit, while en-suring a strengthening of the same. A further ob~ect of the 5 invention resides in improving the ID/IE de-energlzlng ratio so as to make the same higher than 0,6, and in improving the ` anchorage of the coil terminals to the sectioning taps by means oi~ plug-in sectioning contact members.
The invention attains these objects by the provision of a relay of the type as disclosed at the outset, character-ized by the combination of the following features:
a) two counterweights are provided, which are opera-tively connected with the armature for moving the same into 5 rest posltion when the relay is de-energized, b) the moving and stationary contact members are situa-ted in the area above the fore end of the yoke, c ) the said counterweights are respectively arranged on either side of the coil, in such a position that does not 0 impede the visibility of the contact members.
According to a further feature of the invention, the re-lay is formed by three pre-made and preset parts which are connected together at the time the relay is assembled, and 25 which respectively consist in a die-cast body of the relay, in a magnetic circuit unit with a plate for the sectioning front sockets and in a contact members unit.
The said relay components are then covered with a pre-~0 ferably self-extinguishing, transparent plastics materLal casing, with its front end side being so made as to be rearwardly ; n~-l; ne~l in its upper portion which is associated with the contact members unit.
The handle element is formed directly on the casing 5 front end side, and is situated at the rearwardly ;nr~;nF,~l upper portion of the casing front end side.
Advantageously, the front end side of the handle element handle part does not protrude beyond the f ront plane delimiting the maximum overall dimensions of the relay, and 10 the said plane is defined by the front end surfaces of sectioning plugs associated with the sectioning sockets.
Preferably, the upper contact members are fitted with contact pieces of carbon or, as an alternative, of a graphite and silver alloy.
According to a broad aspect of the present invention there is provided a direct current relay especially designed for raiIway type signalling systems. The relay comprises a core extending horizontally through a coil, an iron yoke disposed above the core and f ixed to the one end of 20 the core_ The yoke extends along the coil to the opposite end of the core. An armature is pivotally mounted at the free end of the yoke in front of the corresponding rear end of the core. Sets of moving and stationary contact members are carried by moving and stationary, elastically f lexible 25 strips, which project in superposed and reciprocally spaced relationship from a contact carrier block fixed on the yoke.
The free ends of the moving strips are engaged with a vertically movable contact operator template operatively connected with the armature f or movement of the moving strips 30 to cause some o~ the moving contact members to be moved into or out of electrical contact with some of the stationary contact members when the relay is energi2ed. The direct current relay is characterized in that two counterweights are provided, which are operatively connected with the armature 35 for moving the armature into rest position when the relay is ~, de-energized. Some of the moving and stationary contact members are situated in the area above a ~ore end of the yoke. The counterweights are respectively arranged on either side of the coil in such a position so as to make some of the 5 contact members visible.
Also other features further improving the above disclosed relay form the object of the invention.
The particular features of the invention and the advantages arising therefrom will appear more in detail from 10 the specification of one preferred embodiment thereof, which is shown by way of a non-limiting example in the accompanying drawings, in which:
Figure 1 is a side view of the relay according to the invention.
Figure 2 is a view showing a vertical longitudinal section through the relay according to Figure 1.
Figure 3 is a top view of the relay according to Figure 1.
Figure 4 is a view showing the front end side of the relay ~ c~r~l; ng to Figure 1.
Figure 5 is a cross-sectional view of the relay according to Figure 1.
Figure 6 is a view showing the front end side of the relay according to Figure 1.
Figure 7 and 8, which appear out of sequence on the same sheet aæ Figure 3, are views showing some details of the support f or the armature of the relay according to Figure 1.
Figure 9 is an exploded side view of the relay according to Figure 1, showing its pre-made three parts in disassembled condition.
Referring to the Figures, there is shown that the relay according to the invention, substantially consists of three ,_ _ 5 _ 2~3~140 parts, i.e., a supporting body 1 made of a die-cast metallic material, on which the magnetic circuit unit 2 and the con-tact members unit 3 are fitted (see Figure 9). The contact members unit 3 and the magnetic circuit unit 2 are in form 5 of so pre-made pieces, that the same can be assembled in an extremely easy and accurate manner.
The supporting body 1 consists of a vertical plate 101 forming the rear end side of the relay, and which is to be 10 connected with a not shown plug socket board to be fixedly fitted into a wiring board. The vertical plate 101 is pro-vided in its median area with a horizontal wing-like support 201. Immediately under the horizontal wing-like support 201, two guide sleeves 4 are fixedly connected to the vertical 15 plate 101, and are arranged in a parallel and horizontally coplanar relation, respectively at either side of the hori-zontal wing-like support 201. Each guide sleeve 4 extends up to the rear side of the vertical plate 101, and is caused to protrude from the front end side of the relay. The two 20 guide sleeves 4 are to be fitted on two associated, sleeve-supporting pins (not shown), which are secured to the plug socket board fitted in the wiring board.
The magnetic circuit unit 2 is secured to the lower side 25 of the horizontal wing-like support 201 by means of screws 5 threaded into an L-shaped platelet 6 which constitutes the iron yoke of the relay at the front end side of the core 7 of coil 8, and which is secured to the core front end side by means of screws 9. The opposite pole at the rear end side ~50 of the core 7 is provided with a pole piece 10 that by a 203~1 4~
certain air gap which is adjustable by means of screws 12, 13, is separated from the armature 11. The armature 11 is supported on the rear end of the yoke 6, so as to be swinga-ble around a hori~ontal axis, which is transversal to the 5 core 7. By means of two transverse upper grooves formed in the side edges of armature 11, the said armature is swing-ably engaged with the respective one of two wing-like sup-ports 14. The wing-like supports 14 are rixed to the rear end of the yoke 6, and preferably consist of two opposite, lO laterally extending arms of a U-shaped platelet. By means of the two air gap-adjusting screws 12, 13 the width of the air gap in the energized and in the de-energized condition of the relay, is respectively established.
Particularly in Figures 5, 6, 8, and 9, there clearly appears that the armature 11 carries at both of its sides an arm 15 extending to the front region of the relay, and hav-ing a downward extension 115 to which a counterweight 16 is respectively attached. The counterweights 16 promote the 20 torque for the armature 11 to be returned into rest position when the relay is de-energized, and always ensure a determi-nate stable position of the moving contact members, should the input current fail. These counterweights are each ar-ranged on the respective side of coil 8, at the level of the 25 same. Each arm 15 is provided at its fore end with an upward extension 215 which protrudes beyond the free fore ends of the contact members in unit 3, and which is engaged with a contact operator template 17 for shifting the moving contact members, which in the Figures are designated by references C1, C2. More particularly, each one of the two arms 15 is 2~3ql4~
essentially formed by one-half of a frame substantially hav-ing a rectangular shape, wlth its rear end side being fas-tened to the armature 11, while the front end side thereof forms the upward extension 215, and is engaged with the con-5 tact operator template 17 for shifting the moving contactmembers C1, C2, which for this purpose is provided in the lower zone of each one of its side edges with a groove 117 for the said upward extension to be fitted therein.
The coil 8 may be made in any suitable manner, and may, for example, consist of three separate coils sequentially arranged about the core 7. The coils 8 are wound on a reel 18 of insulating plastics material. In this case, the coil 8 is suïtably divided into three successlve coil sections. The 15 coils 8 can be interconnected so as to achieve the required operative mode of the relay. At the front end side of the magnetic circuit unit 2, i.e., at the front end side of the yoke 6, the magnetic circuit unit 2 carries an insulating plastics material element 19 in which the conductors for 20 feeding each coil 8 are each connected to sectioning sockets 20, whereby it is possible to have a metering made for test-ing the coils 8, and to have the coils 8 connected to each other in the desired manner by means of sectioning plugs 21.
With the magnetic circuit unit 2 being in its assembled con-25 dition, the plastics material element 19 is clamped onto thefree ends of the suitably threaded sleeves 4 by means of tab washers 22 (see Figure 1), since this element is formed with matching holes. The said element 19 is also engaged on the sides of sleeves 4 by means of a respective lateral exten-sion 119. The not shown conductors for feeding the coils 8 21~ 4~
are passed into conductor-hous$ng grooves 219, which are made in the external side edges of the plastics material element 19, and in its lateral extensions 119. Preferably, the conductors for feeding the coils 8 are anchored to the 6 respective sockets 20 by means of plug-in contact members ( no t sh own ) .
The contact members unit 3 comprises a contact carrier block which by means of screws 23 is secured to the upper lO side Or the horizontal wing-like support 201 in the body l of the relay. The contact members unit 3 consists of elas-tically flexible conductive strips 24 arranged in more par-allel planes. The strips 24 in each horizontal plane are set in an equispaced relation and are separated from the strips 15 24 in the ad~acent plane by a suitably shaped insulating layer 25 of plastics material, preferably of polycarbonate.
The conductive strips 24 which are all set in a vertically aligned relation, carry the moving contact members C1, C2 and the stationary contact members C3, C4, C5, and also form ZO the conductors 24' for feeding the coils 8. The conductive strips 24 carrylng the stationary contact members C3, C4, C5 and the conductive strips 24 carrying the associated, moving contact members C1, C2 extend to the front end side region of the relay. The conductive strips 24 carrying the station-25 ary contact members C3, C4, C5, end at a short distance fromthe contact operator template 17, while the conductive strips 24 carrying the said moving contact members C1, C2, are engaged by means of axial extensions thereof, in an as-sociated slot 217 provided in the contact operator template ~0 17, so that as a result of said template 17 being vertically _ g _ ~Q3414~
moved, the strips 24 carrying the moving contact members C1, C2, are bent toward the respective stationary contact mem-bers C3, C4, C5. The conductive strips 24' forming the con-ductors for feeding the coils 8, extend outwardly from the 5 rear end side of the contact members unit 3, substantially in the median zone of said unit, and the flexible cables 29 for feeding the coils 8 are attached to the ends of the con-ductive strips 24 ' by means of plug-in connectors 12g . The conductive strips 24, 24 ' have their rear ends proJecting lO from the rear end side of the contact members unlt 3, and through a respectlve opening 301 in the vertical plate 101 of the supporting body 1, the said strips rear ends are caused to stick out of the rear side of the said vertical plate 101, whereby plug-in contact members are thus formed 15 in plate 101, for cooperation with contact clips ln the not shown plug socket board. The contact operator template 17 associated with the moving contact members C1, C2, is made particularly of insulating, transparent plastics material, and as for what concerns the contact members C1-C5, which 20 are situated in a forwardmost position in the area of the front end side of the relay, the said template 17 ensures a perfect visibility of the said contact members from the out-side. This renders it possible to quickly and reliably make any required inspection of the relay.
~6 According to a further feature of the invention, the contacts are made by means of pieces of a material having unweldability properties. More particularly, the upper sta-tionary contact members C3, C5 are preferably fitted with contact pieces of carbon, or of a grapite and silver alloy.
2~3~0 .
The relay is enclosea, so as to be isolated from the ex-terior, in a preferably self-extinguishing, transparent plastics material casing 26. This casing is open at its rear end side, and with the interposition of an annular seal 27, 5 the same is clamped against an adequate seating means in the vertical plate 101 of the supporting body 1. Two holes 126 are formed in the front end side of casing 26 for the guide sleeves 4 to be respectively passed through the said holes 126, and by means of tab washers 28 the said casing is 10 fastened to the said sleeves. The front end side of casing 26 has a substantially vertical lower portion that extends for the most over the area in which the magnetic circuit un-it 2 is located. The lower vertical portion of the front end side of casing 26 is provided with slots 226 coinciding with 15 the sectioning sockets 20 in the magnetic circuit unit 2, and this vertical portion is caused to substantially bear against the plastics material element 19. Above the holes 126 for the guide sleeves 4 to be passed therethrough, the said vertical lower portion of the casing front end side is 20 connected to an upper portion thereof, which is inclined to-ward the rear end of the relay. Apart from improving the contact members C1-C5 visibility conditions, the said in-clined upper portion of the front end side of casing 26 al-lows a handle element 30 to be provided thereon, which pro-25 ~ects from the front end surface of caslng 26 by a very lim-ited extent, particularly not beyond the maxlmum overall di-mensions of the relay, as defined by the sectioning plugs 21, the handle part of the said handle element 30 being all the same graspable from its back side by the fingers of an ~30 operator ' s hand. In this embodime~lt, the handle element 30 -2~3~
is formed directly on the casing front end side, and its handle part 230 is in form of an upwardly turned vertical arm which extends at a short distance from the front end side of casing 26, near to the inclined portion of the said 5 caslng front end side.
The advantages of the relay according to the invention, clearly spring out from the above disclosure and from the drawings. Primarily, thanks to the devised, particular con-lO struction, a relay having a smaller width dimension, is pro-vided. The partlcular arrangement of the counterweights 16 promoting the torque for the armature 11 to be returned into rest position when the relay is de-energized, allows to more rationally separate the magnetic circuit unit 2 from 15 the contact members unit 3, and to situate the contact mem-bers in the front region of the relay, near to the front end side of the transparent casing, whereby the visibility of said contact members from the outside is thus improved. ~he above disclosed constructional features lastly permit to 20 have the relay, according to the invention, formed by three pre-made and preset pieces that are quickly and simply con-nectable, with their relative positions being extremely pre-cise and stable, and being such as to ensure uniform and constant characteristics.
t~
~0
Claims (11)
1. A direct current relay especially for railway type signalling systems, comprising a core extending horizontally through a coil, an iron yoke disposed above the core and fixed to the one end (fore end) of said core, the said yoke extending along the coil to an opposite end (rear end) of said core, an armature pivotally mounted at a free end of said yoke in front of a corresponding rear end of said core and sets of moving and stationary contact members carried by moving and stationary, elastically flexible strips which project in superposed and reciprocally spaced relationship from a contact carrier block fixed on the said yoke, the free ends of the moving strips being engaged with a vertically movable contact operator template operatively connected with the armature for movement of the moving strips, to cause some of the moving contact members to be moved into or out of electrical contact with some of the stationary contact members when the relay is energized, characterized by the combination of the following features:
a) two counterweights are provided, which are operatively connected with the armature for moving the same into rest position when the relay is de-energized, b) some of the moving and stationary contact members are situated in the area above a fore end of the yoke, c) the said counterweights are respectively arranged on either side of the coil in such a position so as to make some of the contact members visible.
a) two counterweights are provided, which are operatively connected with the armature for moving the same into rest position when the relay is de-energized, b) some of the moving and stationary contact members are situated in the area above a fore end of the yoke, c) the said counterweights are respectively arranged on either side of the coil in such a position so as to make some of the contact members visible.
2. The relay according to claim 1, characterized in that the said relay is formed by three pre-made and preset parts which are connected together at the time the relay is assembled, and which respectively consist in a die-cast supporting body of said relay, in a magnetic circuit unit and in a contact members unit.
3. The relay according to claim 2, characterized in that said magnetic circuit unit is located in a lower zone of said relay, and is formed by said coil, a magnetic circuit and an insulating plastics material element arranged in facing relation with a front end side of said coil and comprising sectioning sockets to which conductors for feeding the coil are connected, preferably by means of plug-in connectors, and a supporting body consisting of a vertical plate to be connected with a plug socket board, which in turn is to be fitted into a wiring board, and of a horizontal wing-like support for the said magnetic circuit unit and for said contact members unit.
4. The relay according to claim 2, characterized in that the armature is made in a form of a rectangular frame, and each longitudinal half of said frame forms a supporting arm having a downward extension for the respective counterweight to be attached thereto, and an upward extension which extends into an upper zone of the relay, in front of the contact members unit, with the contact operator template being engaged with the said upward extension.
5. The relay according to claim 3, characterized in that the insulating plastics material element fitted with the sectioning sockets has two holes formed therein, and at each one of said holes the said insulating plastics material element is provided with an associated axial extension, by which the said element is engaged, when the relay is in an assembled condition, with a respective one of two guide sleeves which are integral with the die-cast supporting body.
6. The relay according to claim 3, characterized, in that said die-cast supporting body with the magnetic circuit unit, and the contact members unit are enclosed, so as to be isolated from the exterior, in a preferably self-extinguishing, transparent plastics material casing with a front end side thereof being rearwardly inclined at an upper portion which is associated with the contact members unit and being vertical in a lower portion which is associated with said magnetic circuit unit, the said front end side of the casing being formed in its lower vertical portion with holes for securing guide sleeves and with slots for the said sectioning sockets.
7. The relay according to claim 6, characterized in that a handle element is formed directly on said front end side of said casing and is situated on said rearwardly inclined upper portion of the front end side of said casing.
8. The relay according to claim 6, characterized in that a handle element has an upwardly extending, vertical handle forepart which is near to said rearwardly inclined upper portion of the front end side of said plastics material casing and is situated at such a very short distance therefrom, as to allow the said handle forepart to be grasped by the fingers of an operator.
9. The relay according to claim 8, characterized in that said front end side of said handle forepart of said handle element does not protrude beyond the front plane delimiting the maximum overall dimensions of the relay, as defined particularly by front end surfaces of said plug-in connectors associated with the sectioning sockets.
10. The relay according to claim 2, characterized in that upper ones of said contact members in the said contact members unit are fitted with contact pieces of carbon or, as an alternative, of a graphite and silver alloy.
11. The relay according to claim 3, characterized in that said conductors for feeding the coil are connected by means of plug-in connectors to said sectioning sockets and to input contact members provided in said contact members unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT12425A/90 | 1990-02-21 | ||
| IT12425A IT1238592B (en) | 1990-02-21 | 1990-02-21 | DIRECT CURRENT RELAYS, IN PARTICULAR SUITABLE FOR RAILWAY SIGNALING SYSTEMS, ESPECIALLY RELEASE OF THE TYPE F.S. 80 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2034140A1 CA2034140A1 (en) | 1991-08-22 |
| CA2034140C true CA2034140C (en) | 1996-11-26 |
Family
ID=11140000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002034140A Expired - Fee Related CA2034140C (en) | 1990-02-21 | 1991-01-15 | Direct current relay especially for railway type signalling systems |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5142258A (en) |
| EP (1) | EP0443199B1 (en) |
| CA (1) | CA2034140C (en) |
| DE (1) | DE69005287D1 (en) |
| ES (1) | ES2047237T3 (en) |
| IT (1) | IT1238592B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600069096A1 (en) * | 2016-07-04 | 2018-01-04 | Carlo Gavazzi Automation S P A | CONTACT GROUP FOR RELAYS FOR RAILWAY SIGNALS AND RELAYS FOR RAILWAY SIGNALS USING THE SAME |
| RU175934U1 (en) * | 2016-11-23 | 2017-12-25 | Общество с ограниченной ответственностью "Информационные технологии" (ООО "ИнфоТех") | ELECTROMAGNETIC RELAY FOR SPEEDS OF RAILWAYS WITH SPEED TRAFFIC |
| RU201151U1 (en) * | 2020-05-26 | 2020-12-01 | Общество с ограниченной ответственностью "Информационные технологии" (ООО "ИнфоТех") | CONTACT GROUP MODULAR TYPE FOR ELECTROMAGNETIC RELAY |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1858966A (en) * | 1930-12-05 | 1932-05-17 | Union Switch & Signal Co | Electrical relay |
| GB443176A (en) * | 1934-12-31 | 1936-02-24 | New Process Welders Ltd | Improvements in electro-magnetic relays for electric welding machines |
| US2382995A (en) * | 1943-11-24 | 1945-08-21 | Westinghouse Electric Corp | Shock-responsive latching device |
| AT189657B (en) * | 1954-12-30 | 1957-04-25 | Hans Brosch | Cover cap for relay |
| US3431521A (en) * | 1966-02-24 | 1969-03-04 | Fujitsu Ltd | Electromagnetic relay of small size and simple structure with unitary core and yoke member |
| JPS4837788Y1 (en) * | 1969-07-19 | 1973-11-09 | ||
| US4199740A (en) * | 1978-04-24 | 1980-04-22 | General Electric Company | Switch device and method of making |
| FR2459544A1 (en) * | 1979-06-19 | 1981-01-09 | Relais Signal Automatisme Sa | IMPROVEMENTS IN THE CONNECTIONS BETWEEN AN ENGINE ASSEMBLY AND A CONTACTS HOLDER BASE OF AN ELECTROMAGNETIC RELAY |
| EP0174467B1 (en) * | 1984-08-17 | 1990-04-11 | Siemens Aktiengesellschaft | Ac contactor |
| JPH0641317Y2 (en) * | 1988-05-30 | 1994-10-26 | オムロン株式会社 | Electromagnetic relay |
-
1990
- 1990-02-21 IT IT12425A patent/IT1238592B/en active IP Right Grant
- 1990-12-11 US US07/625,456 patent/US5142258A/en not_active Expired - Fee Related
- 1990-12-24 DE DE90125421T patent/DE69005287D1/en not_active Expired - Lifetime
- 1990-12-24 EP EP90125421A patent/EP0443199B1/en not_active Expired - Lifetime
- 1990-12-24 ES ES90125421T patent/ES2047237T3/en not_active Expired - Lifetime
-
1991
- 1991-01-15 CA CA002034140A patent/CA2034140C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| IT9012425A0 (en) | 1990-02-21 |
| EP0443199A1 (en) | 1991-08-28 |
| US5142258A (en) | 1992-08-25 |
| DE69005287D1 (en) | 1994-01-27 |
| ES2047237T3 (en) | 1994-02-16 |
| IT1238592B (en) | 1993-08-18 |
| CA2034140A1 (en) | 1991-08-22 |
| IT9012425A1 (en) | 1991-08-22 |
| EP0443199B1 (en) | 1993-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4939615A (en) | Latching and release system for ground fault receptacle | |
| CA1295390C (en) | Field installable line and load lug connectors for molded case circuitbreakers | |
| CA2029196C (en) | Slide switch | |
| GB2097590A (en) | Circuit breaker | |
| US5515019A (en) | Polarized power relay | |
| CA1070399A (en) | Circuit interrupter stab assembly | |
| GB2269939A (en) | Improvements relating to electric switches | |
| US5072328A (en) | Power control relay for electrical outlets which maintains position in absence of solenoid energization | |
| CN1267075A (en) | Electromagnetic contactor having overload relay | |
| US5874877A (en) | Circuit breaker | |
| DE3741999A1 (en) | SWITCH WITH MOLDED HOUSING AND METHOD FOR THE PRODUCTION THEREOF | |
| US3878489A (en) | Electromagnetic relay having a printed circuit board connection between the contacts and radio type plug-in connector | |
| CA1286741C (en) | Cutting/clamping sleeve contact | |
| CA2034140C (en) | Direct current relay especially for railway type signalling systems | |
| CN108172469B (en) | Electrical device for breaking an electric current | |
| JPS5453289A (en) | Electric connector | |
| EP0320686A3 (en) | Electromagnetic switchgear | |
| US20010033213A1 (en) | Electrical relay contactor | |
| EP0907198A3 (en) | Structure and method for connection of an electrical component to an electromagnetic relay | |
| US3249714A (en) | Magnetically operable switching device | |
| EP0440548A3 (en) | Migration-resistant copper alloy for terminal and connector uses having excellent spring characteristics, strength and conductivity | |
| US3235686A (en) | Magnetic switch with readily removable electromagnetic contact unit | |
| US2725440A (en) | Co-axial relay | |
| US2938093A (en) | Electrical contact for fuse cutout | |
| US4914409A (en) | Electric circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |