GB1586234A - Creation of Inventions and Patents with Artificial Intelligence

GB1586234A – Depression capsule for an ignition distributor
– Google Patents

GB1586234A – Depression capsule for an ignition distributor
– Google Patents
Depression capsule for an ignition distributor

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Publication number
GB1586234A

GB1586234A
GB2594477A
GB2594477A
GB1586234A
GB 1586234 A
GB1586234 A
GB 1586234A
GB 2594477 A
GB2594477 A
GB 2594477A
GB 2594477 A
GB2594477 A
GB 2594477A
GB 1586234 A
GB1586234 A
GB 1586234A
Authority
GB
United Kingdom
Prior art keywords
union
rod
depression
diaphragm
pipe
Prior art date
1976-07-15
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

Application number
GB2594477A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Ducellier et Cie

Original Assignee
Ducellier et Cie
Priority date (The priority date 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 date listed.)
1976-07-15
Filing date
1977-06-21
Publication date
1981-03-18

1977-06-21
Application filed by Ducellier et Cie
filed
Critical
Ducellier et Cie

1981-03-18
Publication of GB1586234A
publication
Critical
patent/GB1586234A/en

Status
Expired
legal-status
Critical
Current

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Classifications

F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES

F02P5/00—Advancing or retarding ignition; Control therefor

F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions

F02P5/05—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means

F02P5/10—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on fluid pressure in engine, e.g. combustion-air pressure

F02P5/103—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on fluid pressure in engine, e.g. combustion-air pressure dependent on the combustion-air pressure in engine

Description

(54) A DEPRESSION CAPSULE FOR AN IGNITION DISTRIBUTOR
(71) We, DUCELLIER & CIE, a French
Body Corporate of Echat 950, !4024 Creteil Cedex, France, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention relates to a depression capsule for an ignition distributor having a flexible diaphragm acting via an actuating rod to modify the adjustment of the ignition timing of the distributor as a function of the depression related to operation of the engine, the depression being transmitted to the depression capsule by means of a flexible tube attached to a connection union of the capsule.
Many difficulties arise in the manufacture of capsules of this type and they are costly and difficult to assemble. In fact, since the orientation of the connection union is different for each type of engine, different tooling is necessary for each application and in addition, since the union is secured to the capsule as an additional component, there are often sealing problems at this point. Furthermore, the connection of the actuating rod to the diaphragm is conventionally effected by screwing, which increases the price and the manufacturing time of the assembly.
An object of the present invention is to provide an improved depression capsule in which the connection union may be orientated as required for a particular engine from a standard capsule, and the manner of connecting the actuating rod to the diaphragm is simpler and less expensive.
According to the invention, there is provided a depression capsule for an ignition distributor, comprising a hollow casing constituted by two parts secured together and clamping between them the periphery of a flexible diaphragm, an actuating rod fixed to a central region of the diaphragm which it connects to a contact breaker-carrying plate within the- distributor casing, so that axial movement of the rod modifies the adjustment of the ignition timing as a function of the depression related to operation of the engine, such depression being transmitted to the capsule via a connection union thereof on one of the housing parts, the connection union being made in one piece with said one housing part by moulding from plastics material so as to extend in an initial direction adapted to permit removal of the housing from the mould during manufacture, and being subsequently deformable to a different orientation as required.
The connection union may conveniently be orientated by hot bending with respect to the plane of the cover, after the introduction of a spigot into the union.
The diaphragm is preferably gripped between two rigid rings, through which the actuating rod passes and which are made rigid with the latter by any convenient means, such as crimping or brazing.
The end of the actuating rod, which is adapted to be connected to the contactbreaker carrying plate, initially has a generally oval portion having a correspondingly shaped hole therethrough, said portion being of dimensions such as to permit the passage thereover of a diaphragm return spring which is to surround the rod in use, the oval portion being subsequently deformed so as to produce a circular end adapted to constitute an abutment shoulder for the return spring when on the rod, and a circular hole in the circular rod end adapted to be operatively connected to a spindle of the contact-breaker carrying plate.
The invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a view in section of one embodiment of a depression capsule of the invention;
Figure 2 is a view of the initial shape of the end of the pull rod;
Figures 3, 4, 5 show means for forming a connection between the capsule and a flexible tube.
Referring to Figure 1, this shows an ignition distributor of which the internal parts are omitted and which includes a casing 1 on which is mounted a depression caspule 2 having a hollow housing comprising two housing parts 3 and 4 clamping around the periphery of a flexible diaphragm 5 which separates the housing into two chambers 6 and 7 and at the centre of which is fixed an axially movable actuating rod 8 connecting the diaphragm 5 to a contact-breaker carrying plate (not shown) housed in the casing 1.
The diaphragm 5 is gripped between two rigid rings 12 and 13, through which the rod 8 passes and which are made rigid with the latter by crimping or brazing.
The arrangement of the rod and plate are such that axial movement of the rod modifies the adjustment of the ignition timing as a function of the depression of the engine, which is transmitted to the depression capsule 2 by means of a flexible tube (not shown) connected to a connection union 9 of the capsule 2 disposed on the upper housing part or cover 3. Movements of the diaphragm 5, caused by variations in the depression of the engine, are transmitted by the rod 8 to the contact-breaker carrying plate of the distributor.
The connection union 9 is made in one piece with the cover 3 by moulding a plastics material in an initial direction adapted to permit removal of the assembly from the mould. This direction is preferably perpendicular to the cover 3 (Figure 3). The connection 9, thus made, is then bent with respect to the plane of the cover 3 by a required angle by hot bending after the introduction of a spigot 10 into the union (Figure 4), the spigot being removed after cooling.
An alternative manner of forming the connection union 9 is shown in Figure 5. The spigot is constituted by a deformable pipe 11 (of rubber for example) closed at one of its ends 1 la and whose initial diameter is smaller than the internal diameter of the union 9.
After introduction of the pipe into the union, the pipe is subjected to the pressure of a fluid in the direction F, in such a manner as to increase the diameter of the pipe 11 until it equals the diameter of the union 9, so that when the hot bending operation is finished, the pipe 11 can easily be removed after cooling by removing the pressure in the said pipe 11.
The end 8a of the rod 8 which is connected to the contact-breaker of the distributor is initially constituted (Figure 2) by a generally oval portion 14 provided with a hole 15 which is also generally oval and of a size such as to permit the passage thereover of a return spring 16 for the diaphragm 5. Once the spring 16 is disposed on the rod 8, the oblong portion 14 is deformed in order to produce a circular end 17, which constitutes an abutment shoulder for the return spring, and a corresponding hole 18 adapted to be engaged on and secured to a spindle of the contactbreaker carrying plate.
It is clear that many modifications may be made to the embodiments described above, without going beyond the scope of the invention defined in the following claims. For example, the spigot 10 of Figures 3 and 4 could be in the form of a cable or a spring.
WHAT WE CLAIM IS 1. A depression capsule for an ignition distributor, comprising a hollow casing constituted by two parts secured together and clamping between them the periphery of a flexible diaphragm, an actuating rod fixed to a central region of the diaphragm which it connects to a contact breaker-carrying plate within the distributor casing, so that axial movement of the rod modifies the adjustment of the ignition timing as a function of the depression related to operation of the engine, such depression being transmitted to the capsule via a connection union thereof on one of the housing parts, the connection union being made in one piece with said one housing part by moulding from plastics material so as to extend in an initial direction adapted to permit removal of the housing from the mould during manufacture, and being subsequently deformable to a different orientation as required.
2. A depression capsule according to
Claim 1 wherein the union is such that said subsequent deformation may be effected by hot deformation after the introduction of a spigot into the union.
3. A depression capsule according to
Claim 2, wherein the spigot is constituted by a deformable pipe closed at one of its ends and having an initial diameter smaller than the internal diameter of the union, the pipe being adapted to be subjected, after introduction thereof into the union, to fluid pressure sufficient to increase the diameter of the pipe until it equals the diameter of the union, whereby when the hot deformation operation is completed the pipe can be readily withdrawn by removing the pressure.
4. A depression capsule according to any one of the preceding claims wherein the diaphragm is gripped between two rigid rings through which the actuating rod passes and which are rigidly connected to the latter.
5. A depression capsule according to
Claim 4 wherein the rings are rigidly connected to the rod by crimping or brazing.
6. A depression capsule according to any
one of Claims 1 to 4, wherein the end of the actuating rod which is connected to the contact-breaker carrying plate initially has a generally oval portion having a correspondingly shaped hole therethrough, said portion being of dimensions such as to permit the passage thereover of a diaphragm return
spring which is to surround the rod in use,
the oval portion being subsequently de
formed to produce a circular end adapted to
constitute an abutment shoulder for the
return spring when on the rod and a circular hole in the circular rod end adapted to be
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. periphery of a flexible diaphragm 5 which separates the housing into two chambers 6 and 7 and at the centre of which is fixed an axially movable actuating rod 8 connecting the diaphragm 5 to a contact-breaker carrying plate (not shown) housed in the casing 1. The diaphragm 5 is gripped between two rigid rings 12 and 13, through which the rod 8 passes and which are made rigid with the latter by crimping or brazing. The arrangement of the rod and plate are such that axial movement of the rod modifies the adjustment of the ignition timing as a function of the depression of the engine, which is transmitted to the depression capsule 2 by means of a flexible tube (not shown) connected to a connection union 9 of the capsule 2 disposed on the upper housing part or cover 3. Movements of the diaphragm 5, caused by variations in the depression of the engine, are transmitted by the rod 8 to the contact-breaker carrying plate of the distributor. The connection union 9 is made in one piece with the cover 3 by moulding a plastics material in an initial direction adapted to permit removal of the assembly from the mould. This direction is preferably perpendicular to the cover 3 (Figure 3). The connection 9, thus made, is then bent with respect to the plane of the cover 3 by a required angle by hot bending after the introduction of a spigot 10 into the union (Figure 4), the spigot being removed after cooling. An alternative manner of forming the connection union 9 is shown in Figure 5. The spigot is constituted by a deformable pipe 11 (of rubber for example) closed at one of its ends 1 la and whose initial diameter is smaller than the internal diameter of the union 9. After introduction of the pipe into the union, the pipe is subjected to the pressure of a fluid in the direction F, in such a manner as to increase the diameter of the pipe 11 until it equals the diameter of the union 9, so that when the hot bending operation is finished, the pipe 11 can easily be removed after cooling by removing the pressure in the said pipe 11. The end 8a of the rod 8 which is connected to the contact-breaker of the distributor is initially constituted (Figure 2) by a generally oval portion 14 provided with a hole 15 which is also generally oval and of a size such as to permit the passage thereover of a return spring 16 for the diaphragm 5. Once the spring 16 is disposed on the rod 8, the oblong portion 14 is deformed in order to produce a circular end 17, which constitutes an abutment shoulder for the return spring, and a corresponding hole 18 adapted to be engaged on and secured to a spindle of the contactbreaker carrying plate. It is clear that many modifications may be made to the embodiments described above, without going beyond the scope of the invention defined in the following claims. For example, the spigot 10 of Figures 3 and 4 could be in the form of a cable or a spring. WHAT WE CLAIM IS

1. A depression capsule for an ignition distributor, comprising a hollow casing constituted by two parts secured together and clamping between them the periphery of a flexible diaphragm, an actuating rod fixed to a central region of the diaphragm which it connects to a contact breaker-carrying plate within the distributor casing, so that axial movement of the rod modifies the adjustment of the ignition timing as a function of the depression related to operation of the engine, such depression being transmitted to the capsule via a connection union thereof on one of the housing parts, the connection union being made in one piece with said one housing part by moulding from plastics material so as to extend in an initial direction adapted to permit removal of the housing from the mould during manufacture, and being subsequently deformable to a different orientation as required.

2. A depression capsule according to
Claim 1 wherein the union is such that said subsequent deformation may be effected by hot deformation after the introduction of a spigot into the union.

3. A depression capsule according to
Claim 2, wherein the spigot is constituted by a deformable pipe closed at one of its ends and having an initial diameter smaller than the internal diameter of the union, the pipe being adapted to be subjected, after introduction thereof into the union, to fluid pressure sufficient to increase the diameter of the pipe until it equals the diameter of the union, whereby when the hot deformation operation is completed the pipe can be readily withdrawn by removing the pressure.

4. A depression capsule according to any one of the preceding claims wherein the diaphragm is gripped between two rigid rings through which the actuating rod passes and which are rigidly connected to the latter.

5. A depression capsule according to
Claim 4 wherein the rings are rigidly connected to the rod by crimping or brazing.

6. A depression capsule according to any
one of Claims 1 to 4, wherein the end of the actuating rod which is connected to the contact-breaker carrying plate initially has a generally oval portion having a correspondingly shaped hole therethrough, said portion being of dimensions such as to permit the passage thereover of a diaphragm return
spring which is to surround the rod in use,
the oval portion being subsequently de
formed to produce a circular end adapted to
constitute an abutment shoulder for the
return spring when on the rod and a circular hole in the circular rod end adapted to be
operatively connected to a spindle of the contact-breaker carrying plate.

7. A depression capsule for an ignition distributor, substantially as hereinbefore described with reference to the accompanying drawings.

GB2594477A
1976-07-15
1977-06-21
Depression capsule for an ignition distributor

Expired

GB1586234A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

FR7621608A

FR2358563A1
(en)

1976-07-15
1976-07-15

IMPROVEMENTS TO VACUUM CAPSULES FOR IGNITION DISTRIBUTOR

Publications (1)

Publication Number
Publication Date

GB1586234A
true

GB1586234A
(en)

1981-03-18

Family
ID=9175745
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB2594477A
Expired

GB1586234A
(en)

1976-07-15
1977-06-21
Depression capsule for an ignition distributor

Country Status (5)

Country
Link

DE
(1)

DE2731909A1
(en)

ES
(1)

ES460803A1
(en)

FR
(1)

FR2358563A1
(en)

GB
(1)

GB1586234A
(en)

IT
(1)

IT1080643B
(en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

DE6752364U
(en)

1968-05-29
1969-03-06
Bosch Gmbh Robert

VACUUM CONTROL DEVICE FOR COMBUSTION MACHINERY

GB1409919A
(en)

1972-01-15
1975-10-15
Lucas Electrical Co Ltd
Vacuum units for ignition distributors

US3797512A
(en)

1973-03-14
1974-03-19
Chrysler Corp
Vacuum reducer valve

US3982555A
(en)

1975-07-14
1976-09-28
Borg-Warner Corporation
Vacuum relay valve

1976

1976-07-15
FR
FR7621608A
patent/FR2358563A1/en
active
Pending

1977

1977-06-21
GB
GB2594477A
patent/GB1586234A/en
not_active
Expired

1977-07-14
IT
IT2576377A
patent/IT1080643B/en
active

1977-07-14
DE
DE19772731909
patent/DE2731909A1/en
not_active
Withdrawn

1977-07-15
ES
ES460803A
patent/ES460803A1/en
not_active
Expired

Also Published As

Publication number
Publication date

FR2358563A1
(en)

1978-02-10

IT1080643B
(en)

1985-05-16

ES460803A1
(en)

1978-04-16

DE2731909A1
(en)

1978-01-19

Contact information