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Publication numberUS3237619 A
Publication typeGrant
Publication dateMar 1, 1966
Filing dateApr 20, 1964
Priority dateApr 26, 1963
Publication numberUS 3237619 A, US 3237619A, US-A-3237619, US3237619 A, US3237619A
InventorsKarl-Heinz Schneider, Wilhelm Kind
Original AssigneeBosch Gmbh Robert
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Distributor for internal combustion engines
US 3237619 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Mam}! 1966 w. KIND ETAL DISTRIBUTOR FOR INTERNAL COMBUSTION ENGINES Filed April 20, 1964 FIG. 1

United States Patent 8 Claims. (Cl: 123-4465 The present invention relates to distributors for internal combustion engines.

Distributors of this type normally include a distributor housing in which an interrupter means is mounted for turning movement, and a membrane which responds to the pressure in the intake manifold of the internal combustion engine is operatively connected with the interrupter means to determine the angular position thereof in the distributor housing. In addition the distributor assembly includes an ignition capacitor connected in parallel with the electrical connection of the interrupter means to a source of primary current. It is conventional to mount the membrane assembly and the capacitor at the exterior of the distributor housing so that in this way it is possible to maintain the distributor housing at a minimum diameter far smaller than would be required if the distributor housing itself housed the capacitor. This small size of the distributor housing is required in the manufacture of automobiles where problems of space for the various components are frequently encountered and where it is often difficult to conveniently accommodate the components of the distributor assembly. However, in addition to the advantages with respect to space, smaller distributor housings are less expensive than larger distributor housings. On the other hand, an arrangement of the above type where the membrane together with its housing and the capacitor are located at the exterior of the distributor housing creates the problem of conveniently connecting the interrupter in the interior of the distributor housing to the source of primary current as well as of providing a parallel electrical connection between the interrupter and the capacitor which is at the exterior of the distributor housing.

It is accordingly a primary object of the present invention to provide an inexpensive simple structure which will have the necessary electrical connections between the interrupter and the capacitor, where the latter is at the exterior of the distributor housing, as well as between the interrupter and the source of primary current.

It is furthermore an object of the present invention to provide a construction of the above type where the electrical connections do not create any problem in the assembly of the various components.

Yet another object of the present invention is to provide a structure of the above type where the electrical connections do not undesirably influence the compactness of the entire assembly.

With these objects in view the invention includes, in a distributor for an internal combustion engine, a distributor housing and a capacitor and membrane housing carried by and located at the exterior of the distributor housing. An interrupter means is supported in the interior of the distributor housing for turnable movement and is operatively connected with a membrane in the membrane housing to have its angular position in the distributor housing determined by the pressure which acts on the membrane, the membrane housing being adapted to be connected with the interior of an intake manifold of the engine so that the membrane will respond to the pressure in the intake manifold in order to automatically determine the angular position of the interrupter means in the distributor housing. In accordanoe with the present invention an elongated conductor means is electrically connected with the interrupter means and has a pair of branches one of which is electrically connected with the capacitor and the other of which is adapted to be electrically connected to a source of primary current, and the distributor housing is formed with but one opening for this conductor means which in addition includes but one plug-and-socket type of connection so that at this latter connection portions of the conductor means may be separated from and rejoined with each other.

The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings, in which:

FIG. 1 is a partly sectional elevation of one possible embodiment of a structure according to the present invention; and

FIG. 2 is a top plan view of the structure of FIG. 1 with the distributor head removed from the distributor housing to show the interrupter structure therein, the rotary contact assembly for distributing the current in a given sequence to the several sparkplugs also being omitted from FIG. 2 so that the interrupter means in the distributor housing can be more clearly illustrated in FIG. 2.

Referring now to FIGS. 1 and 2, there is illustrated therein a distributor housing 10 carrying a distributor head 11 (FIG. 1) and provided with a rotary distributor shaft 16' driven in a well known manner at a suitable transmission ratio from the crankshaft of the engine and extending into the interior of the distributor housing where the rotary shaft 16', which is turnable in a suitable bearing carried by the distributor housing, is connected in a known way with a rotary cam to rotate the latter and thus make and break a circuit a given number of times for each revolution of the shaft 10', as is well known in the art.

A membrane housing 12 is located at the exterior of the distributor housing 10, this housing 12 being carried by a suitable bracket which is fixed to the housing It), and the interior of the membrane housing on one side of the membrane therein is connected through a tubular fitting 12' with an elongated duct or tube which in turn communicates with the interior of the intake manifold of the engine, so that the position of the membrane in the housing 12 is determined in a well known manner by the extent of suction in the intake manifold.

Directly behind the membrane housing 12 between the latter and the distributor housing 10 is a capacitor 13 which is elongated and parallel to the shaft 10', and the lower or bottom end of the capacitor 13 is situated approximately at the same elevation as the bottom wall of the housing 10. At its bottom end the capacitor 1-3 carries an electrically conductive member which forms a connecting electrode by which the capacitor is connected into the electrical circuit. An additional bracket 13' fixes the capacitor 13 to the housing It at their exterior thereof.

An electrical conductor means of the invention includes a pair of branches 14 and 24 both of which are adapted to be electrically connected with an interrupter in the distributor housing, as will be apparent from the description below, and the branch 24 is adapted to be connected electrically with a source of primary current. The branch 14 of the conductor means of the invention is connected electrically with the electrically conductive member at the bottom end of the capacitor 13.

The housing 11 is formed with a single opening for the conductor means, and while this single opening could be located at a side wall of the housing 10, it is preferred to situate it at the bottom wall thereof since in this way the electrical structure is protected to a greater extent. In this single opening for the conductor means is located on insulating member 19 in the form of a sleeve of electrically non-conductive material having a fluid-tight engagement with the housing 10, and this tubular member 19 may be made of a suitable plastic material which is formed under pressure directly in the opening of the housing 111 so as to have a very secure connection thereto.

The branches 14 and "24 of the conductor means extend through the bottom end of the insulating member '19 into the interior thereof where the branches 14 and 24 are electrically connected with a connector member 15 of a plug-and-socket type of electrical connection 15, 18. The member 19 closely surrounds the elements 15, 14 and 25, and the connector element 15 in the form of an elongated flat metal member projects upwardly from the member 19 to the interior of the housing where the member 15 is removably received within the element 18 which corresponds to the socket of the plug-and-socket connection 15, 18. The element 18 itself is made of metal and has its opposed side edges bent over to form a pair of elongated channels which receive with a snug fit the opposed side edges of the member 15, so that in this Way the elements 15 and 18 cooperate to provide an electrical connection when they matingly engage each other as shown While element 18 whenever desired can he slipped off element 15 to interrupt the electrical connection. The electrically conductive connector member 18 is electrically connected with one end of a conductor 16 the other end of which is electrically connected with the interrupter lever 17 of the interrupter means which is located in the housing 10. Thus, elements 14, 15, 16, 18 and 24 form an elongated conductor means which has the branches 14 and 24, which is connected electrically with the interrupter means and which has the branch 14 con nected electrically with the capacitor 13 While the branch 24 is adapted to be connected with a source of primary current, and it will be noted that with the structure of the invention only a single opening in which the member 19 is accommodated for guiding the conductor means is required. Moreover, the entire conductor means includes but a single structure 15, 18 which enables the conductor means to be interrupted and rejoined. The branches 14 and 24 can be joined to the connector 15 as by being soldered thereto.

Distributors which have centrifugal governors will have the opening for the conductor means situated at a side wall of the housing 10;

As is apparent particularly from FIG. 2 the interrupter means in the housing 11 includes an interrupter plate 20 concentric with the distributor shaft and supported in the housing for turning movement about the axis of the distributor shaft, and this interrupter plate 20 of the interrupter means carries the interrupter lever '17 which is provided with interrupter contact 17, and in addition the plate 20 carries a stationary contact carrier 21 which carries the interrupter contact 21'. A link 22 is pivotally connected at one end to the plate 20 and at its opposite end to the membrane in the housing 12, so that in this way the membrane assembly forms a means operatively connected to the interrupter plate 20, and thus the entire interrupter means, for determining the angular position thereof in the distributor housing according to the pressure in the intake manifold of the engine.

The plug-and-socket type of connection 15, :18 between the lever 17 and the capacitor 13 at the wall of the distributor housing provides not only an easy and convenient assembly of the parts when the distributor is mounted on the engine, but also a very convenient exchange of components whenever required.

It will he understood that each of the elements described above, or two or more together, may also find a useful application in other types of distributors differing from the types described above.

While the invention has been illustrated and described as embodied in electrical connections for distributors, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can by applying current knowledge readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalence of the following claims.

What is claimed as new and desired to be secured by Letters Patent is:

1. In a distributor for an internal combustion engine, in combination, a distributor housing formed with an opening; interrupter means turnably carried by said housing; means carried by said housing at the exterior thereof, adapted to be connected with the intake manifold of an engine, and operatively connected with said interrupter means for determining the angular position thereof in said housing according to the pressure in the intake manifold of the engine; a capacitor carried by said housing at the exterior thereof; a plug and socket type connector means with separable first and second parts one of which is fixed in said opening; first flexible elongated electrical conductor means arranged within said housing and connected electrically at one end with said interrupter means and at the other end to said first part of said plug and socket type connector means; two flexible branch conductor means both connected at one end to said second part of said plug and socket type connector means and one of them connected at the other end to said capacitor and the other of them adapted to be connected at its other end to a source of primary current.

2. In a distributor for an internal combustion engine, in combination, a distributor housing formed with an opening; interrupter means turnably carried by said housing in the interior thereof; means carried by said housing at the exterior thereof and operatively connected to said interrupter means for determining the angular position thereof in said housing according to the pressure in the intake manifold of an engine; a capacitor carried by said housing at the exterior thereof; an electrically nonconductive member carried by said housing in said opening thereof; an electrical plug-and-socket type of connecting means including a pair of connector members one of which is carried by said non-conductive member and extends into the interior of said housing; an electrical conductor connected electrically with said interrupter means and carrying the other of said connector members so that a circuit including said interrupter means may be closed or opened by moving said connector members into or out of engagement with each other; and a pair of elongated electrical conductors connected electrically with said one connecter member and extending therefrom to the exterior of said housing, one of said pair of conductors being electrically connected with said capacitor and the other adapted to be connected to a source of primary current.

3. In a distributor as recited in claim 2, said electrically non-conductive member being in the form of a sleeve of insulating material having a fluid-tight connection with said housing.

4. A distributor as recited in claim 1 and wherein said opening is situated at the bottom of said housing.

5. A distributor as recited in claim 1 and wherein said opening is situated at the side of said housing.

6. In a distributor as recited in claim 1 and including an insulating member fixed to and covering part of said one electrically conductive element, said insulating member extending through said opening of said housing in sealing engagement therewith.

7. In a distributor as recited in claim 1, an electrically non-conductive guide member carried by said housing in said opening thereof for guiding said conductor means therethrough.

8. In a distributor for an internal combustion engine, in combination, a distributor housing formed with an opening; interrupter means turnably carried by said housing; means carried by said housing at the exterior thereof, adapted to be connected with the intake manifold of an engine, and operatively connected with said interrupter means for determining the angular position thereof in said housing according to the pressure in the intake manifold of the engine; a capacitor carried by said housing at the exterior thereof; a plug and socket type connector means with separable parts, one of which is fixed in said opening in said distributor housing; first flexible elongated electrical conductor means arranged within said distributor housing connected at one end thereof electrically to said interrupter means and connected at the other end thereof electrically to the other separable part of said plug and socket type connector means, so as to be separably connected to said one part of said plug and socket type connector means which is fixed in said opening; and second flexible elongated electrical conductor means arranged outside of said distributor housing and connecting said one part of said plug and socket type connector means with said capacitor, said second flexible elongated electrical conductor means including also connector means adapted to be connected to a source of primary current.

References Cited by the Examiner UNITED STATES PATENTS 2,326,113 8/1943 Zoerlein et al 200-19 2,923,785 2/1960 Longenecker 200l9 FOREIGN PATENTS 1,067,433 1/1954 France.

927,131 5/ 1963 Great Britain.

MARK NEWMAN, Primary Examiner.

25 RICHARD B. WILKINSON, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2326113 *Sep 20, 1941Aug 10, 1943Ford Motor CoDistributor
US2923785 *Jan 21, 1954Feb 2, 1960Longenecker Ernst AEngine distributor and method of adjustment thereof
FR1067433A * Title not available
GB927131A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3396249 *Dec 14, 1965Aug 6, 1968Bosch Gmbh RobertDistributor for internal combustion engine
US3776206 *May 10, 1972Dec 4, 1973Matthews DDistributor adjusting mechanism
US6494418Feb 2, 1998Dec 17, 20023M Innovative Properties CompanyWrist rest assembly
US6626403Jan 31, 2000Sep 30, 20033M Innovative Properties CompanyWrist rest assembly
US6843454Aug 25, 2003Jan 18, 20053M Innovative Properties CompanyMethod of assembling a wrist rest
US20040035986 *Aug 25, 2003Feb 26, 20043M Innovative Properties CompanyWrist rest assembly
Classifications
U.S. Classification123/146.50R, 200/19.39, 200/19.3, 123/146.50A
International ClassificationF02P5/04, F02P5/10
Cooperative ClassificationF02P5/103
European ClassificationF02P5/10B