EP1845592A2 - Lamp mount and method for assembling the lamp mount - Google Patents

Abstract

The socket has a main body (10), which consists of a lamp receiving part (20) and a connecting part (30). A contact area of the receiving contact element (21) or the connecting contact element (31) has one insulation piercing connection (40) with two insulation piercing connecting side pieces and other contact area is jammed between the two insulation piercing connecting side pieces of the insulation piercing connection. An independent claim is also included for a method for assembling a socket.

Description

The invention relates to a socket for receiving and contacting an incandescent lamp. The socket consists of a main body, which is formed from a lamp receiving part and a connecting part. The lamp receiving part and the connecting part are connected to each other and arranged so that their axes include an angle greater than or equal to 0 ° and less than or equal to 180 °, preferably 90 °. At least one receiving contact element is inserted in the lamp receiving part and at least one connecting contact element is inserted in the connecting part, an electrical contact being established between a contact region of the receiving contact element and a contact region of the connecting contact element.

The invention further relates to a method for mounting such a lamp socket.

Generic versions are known from the prior art. The European patent EP 0 668 638 B1 For example, describes a lamp socket with an L-shaped housing. The L-shaped housing consists of a device seat and a connecting seat, wherein the longitudinal axes of the device seat and the connecting seat include an angle greater than 0 ° and less than 180 °. In the device seat, a device attachment and a connector port are inserted in the connection seat. To establish electrical contact between these terminals, a through hole is formed in one of the terminals, in which the other terminal is fitted. In order to hold the fitted into the hole contact and to realize a secure electrical contact, elastic sections are necessary, which apply a spring force on the terminal.

A disadvantage in the prior art, the low holding force of these elastic portions, so that the inserted into the hole contact element without a large force application is pulled out of the hole when, for example, a connector plugged onto the connector contact is deducted.

In order to hold the contact elements in the lamp socket, the contact elements in the prior art, for example, locked in the surrounding plastic. A disadvantage of this embodiment, however, is that at multiple tensile load of a contact element, the holding force of the plastic decreases sharply by erosion and deformation.

The object of the invention is to provide a generic lamp socket, which produces a mechanically strong loadable connection between the contact elements of a lamp receiving part and a connecting part.

The object of the invention is also to provide a method for mounting this lamp socket.

According to the invention this object is achieved by a version with the features of independent claim 1. Advantageous developments of the version will become apparent from the dependent claims 2-6. Furthermore, the invention comprises a method for mounting the socket according to claim 7 and the further developments in the subclaims 8 and 9.

The socket according to the invention for receiving and contacting an incandescent lamp comprises a main body, which consists of at least one lamp receiving part and a connecting part. The lamp receiving part and the connecting part are connected to each other and arranged so that their axes include an angle greater than or equal to 0 ° and less than or equal to 180 °. In the lamp receiving part is at least one receiving contact element and in the connecting part at least one connection contact element is inserted, wherein between a contact region of the receiving contact element and a contact region of the connection contact element is made an electrical contact, wherein the contact region of the receiving contact element or the connecting contact element at least one insulation displacement terminal with two insulation displacement legs , wherein between the two cutting clamp legs of the other contact area is clamped. The IDC legs cut into the material of the pushed into the IDC leg contact area.

The inventive construction of a lamp holder is particularly suitable for versions in which the lamp receiving part and the connecting part are arranged so that their axes include an angle greater than 0 ° and less than 180 °, with an angle of about 90 ° is preferred.

In a preferred embodiment of the invention, the contact region of the receiving contact element or the connecting contact element has at least two insulation displacement terminals, wherein the respective other contact area between the insulation displacement limbs the at least two insulation displacement terminals are clamped. Preferably, the at least one insulation displacement terminal is integrally connected to the contact region of the receiving contact element or the connection contact element.

In a further embodiment of the invention, the contact region of the other contact region clamped in the insulation displacement terminal of the receptacle contact element or of the connection contact element is pin-shaped. Advantageously, the pin-shaped contact region thereby has a quadrangular cross section and thus the shape of a contact pin.

In a particularly preferred embodiment, the at least one insulation displacement terminal is arranged at the contact region of the receiving contact element, while the contact region of the connection contact element is formed pin-shaped.

The invention further comprises a method for mounting a socket for receiving and contacting a light bulb, wherein the socket has a main body, which consists of a lamp receiving part and a connecting part. In this case, the lamp receiving part and the connecting part are connected to each other and arranged so that their axes include an angle greater than 0 ° and less than 180 °, preferably 90 °. At least one receiving contact element is inserted into the lamp receiving part and at least one connecting contact element is inserted into the connecting part. Between a contact region of the receiving contact element and a contact region of the connection contact element, an electrical contact is made by a contact region of the receiving contact element or the connecting contact element between two insulation displacement limbs at least one Clamping of the other contact area is clamped.

In a particularly preferred embodiment of this method, the contact region of the connection contact element is pin-shaped and is inserted into a channel in the connecting part, wherein it is brought into a defined position. The contact region of the receiving contact element is formed as at least one insulation displacement terminal, each with two insulation displacement limbs and is inserted into a further channel in the lamp receiving part, wherein the insulation displacement terminal of the terminal contact element pinches the pin-shaped contact region of the connection contact element.

Preferably, the end of the pin-shaped contact region of the connection contact element comes to rest after insertion into the channel of the connecting part on a web, which is formed by two recesses in the material of the connecting part, so that the lateral recesses receive the insulation displacement limbs of the insulation displacement terminal when clamping the pin-shaped contact region of the connection part ,

The use of at least one insulation displacement terminal at one of the contact regions of a generic lamp socket has the advantage that the pull-off forces of the connection contact element or the receiving contact element are thereby increased. The insulation displacement terminal is located in the contact region of the receiving contact element, after connecting a receiving contact element with a connection contact element for pulling out of the connection contact element from the insulation displacement terminal of the receiving contact element force is very high. This can be prevented when pulling a connector whose contacts over the connection area the lamp holder are electrically and mechanically connected to the connection contact elements, the connection contact elements are pulled out with. The use of several insulation displacement terminals contributes to further increase the withdrawal forces of the contact elements.

If the insulation displacement terminals are integrally connected to the connection contact element or the receiving contact element and thus produced from a component, this reduces the manufacturing costs compared to a two-part design. Another advantage of the invention lies in the cost-effective use of common, pin-shaped connection contact elements when the at least one insulation displacement terminal is located, for example, in the contact region of the connection contact element.

In particular, in an angular lamp socket, in which the longitudinal axes of the lamp receiving part and the connecting part are not perpendicular to each other, contacting the contact areas according to the invention by means of a cutting clamp has the advantage that it allows easy and secure contact in all angular positions. The housing of the lamp socket must only be designed so that the contact elements of the two parts are guided clearly defined during assembly within the housing. Once the insulation displacement connection is established, a pin pinched at an angle other than 90 ° is also fixed and electrical contact is assured.

Further advantages, features and expedient developments of the invention will become apparent from the dependent claims and the following description of preferred embodiments with reference to the drawings.

Fig. 1

eine perspektivische Ansicht eines gattungsgemäßen Lampenfassungsgehäuses;

Fig. 2

eine perspektivische Ansicht eines besonders bevorzugten Ausführungsbeispiels zweier Verbindungskontaktelemente und entsprechender Aufnahmekontaktelemente einer erfindungsgemäßen Lampenfassung;

Fig. 3

eine perspektivische Ansicht eines besonders bevorzugten Ausführungsbeispiels eines als Doppelschneidklemme ausgebildeten Kontaktbereiches eines Aufnahmekontaktelementes mit eingeführten Kontaktstiften;

Fig. 4

eine perspektivische Ansicht eines Längsschnitts durch ein besonders bevorzugtes Ausführungsbeispiel der erfindungsgemäßen Glühlampenfassung; und

Fig. 5

einen vergrößerten Ausschnitt des in Fig. 4 dargestellten Bereiches des elektrischen Kontaktes.

From the pictures shows:

Fig. 1

a perspective view of a generic lamp socket housing;

Fig. 2

a perspective view of a particularly preferred embodiment of two connection contact elements and corresponding receiving contact elements of a lamp holder according to the invention;

Fig. 3

a perspective view of a particularly preferred embodiment of a trained as a double cutting terminal contact area of a receiving contact element with inserted contact pins;

Fig. 4

a perspective view of a longitudinal section through a particularly preferred embodiment of the bulb holder according to the invention; and

Fig. 5

an enlarged detail of the area shown in Fig. 4 of the electrical contact.

Fig. 1 shows a generic lamp socket with a main body 10 which is divided into a lamp receiving part 20 and a connecting part 30. In the lamp receiving part 20, a light bulb is used. This can be done for example by a bayonet, in which the bulb can be screwed. A extending through the lamp receiving part 20 longitudinal axis extends in the insertion direction of the bulb.

The connecting part 30 serves to receive a plug, which produces the electrical contact of the incandescent lamp with a voltage source. This connector is inserted at the open end of the connector. In this case, the contacts of the plug are connected to the ends of lying in the connecting part 30 contacts. Through the connecting part 30 extends a longitudinal axis in the insertion direction of the connector.

The longitudinal axes of the lamp receiving part 20 and the connecting part 30 intersect in the region of the connection of the two components. The longitudinal axes of the components enclose an angle that is greater than 0 ° and less than 180 °. In the lamp socket shown in Fig. 1, this angle is about 90 °, so that the lamp socket is substantially L-shaped. Depending on the application of the lamp socket, however, the angle in other embodiments may also assume other values between 0 ° and 180 °.

Fig. 2 shows the perspective view of a particularly preferred embodiment of the present in the main body 10 of the lamp socket contact elements. In this embodiment, the receiving contact element consists of two components 21 and 21 ', of which a component 21, for example, contacted the ground contact of an incandescent bulb, while the second member 21' contacts the periphery of the light bulb socket. The component for contacting the circumference of a light bulb base may be formed, for example, as a bayonet mount and its shape is dependent on the geometry of the incandescent bulb. The component for contacting the ground contact of the incandescent lamp is for example a spring, as shown in Fig. 2 and Fig. 3. Either the bayonet mount and the spring of the receiving contact element 21,21 'have in this embodiment of the invention a contact pair, which comprises two elongate webs, at the end of each a contact region 22; 22' is located. The connection contact element for connecting a plug likewise consists of a contact pair 31, 31 ', which is connected via its associated contact regions 32, 32' to the corresponding contact regions 22, 22 'of the receiving contact element.

The number of contacts in the main body 10 of a lamp socket can vary. The number of contacts depends, for example, on the number of filaments of an incandescent lamp inserted in the main body 10. For example, if two filaments are used, there is another contact compared to a filament.

The contact areas 22, 22 'at the end of the receiving contact element are formed in the embodiment shown in FIGS. 2 and 3 as insulation displacement terminals 40, each having two pairs of insulation displacement limbs 41, 41'. In this case, the pin-shaped contact region 32, 32 'of the connection contact element 31, 31' is inserted between the insulation displacement limbs 41, 41 'of the at least one insulation displacement terminal 40.

In an embodiment not shown in the figures, the at least one insulation displacement terminal can also be located on the contact region 32, 32 'of the connection contact element 31, 31', while the contact region 22, 22 'of the reception contact element 21, 21' is in the form of a pin.

For mounting the connection, the pin-shaped contact areas are advantageously first introduced and then contacted with the insulation displacement terminals of the other contact areas. In the exemplary embodiment of the invention shown in the figures, the insulation displacement limbs 41, 41 'of the at least one cutting clamp 40 with the cutting edges 43 pointing in the clamping gap cut material out of the pin-shaped contact region 32, 32'. In the process, the insulation displacement limbs 41, 41 'of the at least one insulation displacement terminal 40 intersect the cross-section of the pin-shaped contact region 32, 32' and the electric current is transmitted via these surfaces of the insulation displacement limb.

Compared to a simple plug-in connection, the notches cut into the material of the contact pins by the insulation displacement limbs increase the force required to pull the pin-shaped contact laterally out of the insulation displacement terminal. By using a plurality of cutting terminals for contacting contact pins, the force required for lateral removal of the pin-shaped contact elements from the insulation displacement terminals is further increased. It should be noted, however, that the force required during assembly for inserting the contact pins in the insulation displacement terminals 40 also increases.

FIG. 3 shows an enlarged detail of the contacting of a receiving contact element 21 shown in FIG. 2, at the end of which two insulation displacement terminals 40 are formed. The contact region 32 of a pin-shaped connection contact element 31 was clamped during assembly between the insulation displacement limbs of the two insulation displacement terminals. However, the cutting of the cutting edge leg in the contact pin to simplify the presentation, however, is not shown in the drawing.

Fig. 4 discloses a longitudinal section through a particularly preferred embodiment of the lamp socket according to the invention, consisting of the main body 10, which is divided into a lamp receiving part 20 and a connecting part 30. In the main body, a pin-shaped connecting contact element 31 is inserted in this view, which is inserted between the insulation displacement limbs of the at least one insulation displacement terminal 40 of the receiving contact element 21. In this embodiment, two insulation displacement terminals 40 are also present at the end of the receiving contact element. However, it is also possible to use only one or more than two insulation displacement terminals for contacting the connection contact element 31.

The insulation displacement terminals 40 are integrally connected to the female contact element 21 in this embodiment of the invention, so that the entire female contact element is formed of a continuous material. However, the insulation displacement terminals may also be connected to the receiving contact element 21 or the connection contact element 31 via a welding or adhesive process. The ends of the insulation displacement terminals 40 are received by in-lying recesses 42 in the lamp receiving part 30, while the contact pin 31 rests on a web between these recesses. The recesses 42 provide for a defined positioning of the insulation displacement terminals 40, while the web between the wells supports the contact pin during assembly to allow a cutting of the insulation displacement into the material of the pin.

For mounting the lamp holder, the pin-shaped contact elements 31, 31 'are expediently first inserted into the connection part 30, corresponding channels being provided in the material of the connection part. The cross section the channels is preferably chosen so that they allow easy insertion of the pins, but stick the pins with no or only a very small game in the channels. If contact pins with a rectangular cross-section are selected, the channels are preferably made with the same cross-section so as to prevent twisting of the pins. After insertion of the contact pins in the connecting part 30, the end of a pin in the region of the electrical contact is preferably on the web, which is formed between the two recesses 42 in the material of the connecting part. Furthermore, the tip of a pin can rest on the housing inner wall, so that the position of the contact pin is firmly defined.

After insertion of the contact pins, the receiving contact elements 21,21 'are pushed from the outside into the lamp receiving part 20. In order to align the receiving contact elements in the housing, insertion channels are expediently also provided and the assembly can be done manually or mechanically. The legs of the insulation displacement terminals 40 are received during insertion of the receiving contact elements in the recesses 42 in the material of the connecting part. The cutting terminals 40 of the receiving contact elements 21,21 'intersect in the pin-shaped contact region 32,32' of the connection contact elements 31,31 'and establish a solid electrical and mechanical connection, the depth of the receptacles 42 is chosen so that at the latest when in contact the insulation displacement limb with the bottom of the wells the desired contact is created.

When a tensile force is applied to the pin-shaped connection contact member 31 to pull it out of the connection part, the receptacles 42 further prevent lateral bending the cutting terminals 40. The receptacles 42 thus ensure that the insulation displacement terminals 40 do not tilt in the withdrawal direction or twist. Therefore, a very high force would be required to release the connection contact elements 3X, 31 'from the connection part 20. When removing a plug from the pins, the pins are thus securely held in the housing of the lamp socket.

FIG. 5 shows an enlarged detail of the embodiment of the lamp socket according to the invention and in particular the region of the electrical contacting shown in FIG. 4. It can be seen that the respective legs 41, 41 'of the insulation displacement terminals 40 are received in the recesses 42, wherein they in this embodiment, do not touch the bottom of the recess. The maximum insertion depth of the contact region 21 into the receiving part 20 can be realized by contact with the bottom of the depressions or otherwise formed stops within the housing. The maximum possible insertion depth for a contact element with a cutting clamp is in any case so large that a secure electrical connection is ensured with a pinched pin.

COVERS LIST:

10

Main body of the light bulb socket

20

Lamp receiving part

21, 21 '

Female contact element

22, 22 '

Contact area of a receiving contact element

30

connecting part

31, 31 '

Connector contact element

32, 32 '

Contact area of a connection contact element

40

insulation displacement terminal

41, 41 '

IDC man grandson

42

Deepening, recording

43

nip

Claims (9)

Socket for receiving and contacting an incandescent lamp, comprising a main body (10) consisting of a lamp receiving part (20) and a connecting part (30), wherein the lamp receiving part (20) and the connecting part (30) are interconnected and arranged so that their axes enclose an angle greater than or equal to 0 ° and less than or equal to 180 °, preferably 90 °, and at least one receiving contact element (21, 21 ') in the lamp receiving part (20) and at least one connecting contact element (31; 31 ') is inserted, wherein between a contact region (22:22') of the receiving contact element (21; 21 ') and a contact region (32; 32') of the connection contact element (31; 31 ') is made an electrical contact,
characterized,
in that a contact region (22; 22 ', 32; 32') of the receiving contact element (21; 21 ') or the connecting contact element (31; 31') has at least one insulation displacement terminal (40) with two insulation displacement limbs (41; 41 ') and respectively another contact region (22; 22 ', 32; 32') is clamped between the two insulation displacement limbs (41; 41 ') of the insulation displacement terminal (40). Socket according to claim 1,
characterized ,
that the contact area (22 ', 32; 32' 22) and at least two insulation-displacement terminals (40) of the respectively other contact part (22 (21;; 21 ') of the female contact element or Verbindungekontaktelementes (31 31'); 22 ', 32 32 ') is clamped between the insulation displacement limbs (41, 41') of the at least two insulation displacement terminals (40). Holder according to one or more of the preceding claims 1 to 2,
characterized ,
in that the at least one insulation displacement terminal (40) is integrally connected to the contact region (22; 22 ') of the receptacle contact element (21; 21') or the connection contact element (31:31 '). Holder according to one or more of the preceding claims 1 to 3,
characterized ,
in that the contact region (22; 22 ', 32; 32') of the other contact element (21; 21 ', 31; 31) clamped in the insulation displacement terminal (40) of the receptacle contact element (27; 21') or the connection contact element (31; ') is formed pin-shaped. Socket according to claim 4,
characterized,
that the pin-shaped contact region (22; 22 ', 32; 32') has a quadrangular cross-section. Holder according to one or more of the preceding claims 1 and 5,
characterized,
in that the at least one insulation displacement terminal (40) is arranged on the contact region (22; 22 ') of the receptacle contact element (21; 21'), while the contact region (32; 32 ') of the connection contact element (31; 31') is pin-shaped. A method for mounting a socket for receiving and contacting an incandescent lamp, in which the socket has a main body (10) consisting of a lamp receiving part (20) and a connecting part (30), the lamp receiving part (20) and the connecting part (30) are arranged so that their axes are at an angle greater than 0 ° and less than 180 °, preferably 90 °, and connected to each other, wherein in the lamp receiving part (20) at least one receiving contact element (21; 21 ') and in the connecting part (30) at least one connection contact element (31, 31 ') is inserted and an electrical contact is made between a contact region (22, 22') of the receiving contact element (21, 21 ') and a contact region of the connection contact element (31, 31'),
characterized,
that a contact region (22 ', 32; 32' 22) (21; 21 ') of the female contact element or the mating contact element (31; 31') between two insulation displacement arms (41; 41 ') at least one insulation displacement terminal (40) of the other contact region (22; 22 ', 32; 32') is clamped. Method according to claim 7,
characterized,
in that the contact region (32; 32 ') of the connection contact element (31; 31') is pin-shaped and is first inserted into a channel in the connection part (30),
wherein it is brought into a defined position, and in that the contact region (22; 22 ') of the receiving contact element (21; 21') as at least one insulation displacement terminal (40) with two insulation displacement limbs (41; 41 ') is formed and in a channel inserted in the lamp holder (20) with the cutting terminal (40) of the receiving contact element (21; 21 ') clamping the pin-shaped contact region (32; 32') of the connecting contact element (31; 31 '). Method according to claim 8,
characterized,
that the end of the pin-shaped contact region (32, 32 ') of the connection contact element (31, 31') comes to lie on a web after insertion into the channel of the connection part (30), which is formed by two depressions (42) in the material of the connection part (30 ), so that the lateral depressions (42) receive the insulation displacement limbs (41, 41 ') of the insulation displacement terminal (40) when clamping the pin-shaped contact region (32, 32') of the connection part (30).

Images