WO2000001043A1 - Procede de realisation d'une piece contactee - Google Patents
Procede de realisation d'une piece contactee Download PDFInfo
- Publication number
- WO2000001043A1 WO2000001043A1 PCT/FR1999/001352 FR9901352W WO0001043A1 WO 2000001043 A1 WO2000001043 A1 WO 2000001043A1 FR 9901352 W FR9901352 W FR 9901352W WO 0001043 A1 WO0001043 A1 WO 0001043A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- candle
- contact
- base
- support
- production method
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
Definitions
- the present invention relates to a method for producing a contacted part.
- contacted part means a part formed by a base provided with at least one candle at the top of which is the contact.
- This contact is quite far from the base, the height of the candle being significantly greater than the thickness of the base.
- This type of contact part is commonly used in electromechanical switching components such as switches, position detectors, etc.
- the contacted part When the contacted part is mobile, it is inside the box housing the switching mechanism, it is called a blade and when it is fixed, it leaves the box to be connected to an electrical conductor and is called a terminal.
- the base and the candle are made of a material chosen for its good mechanical and electrical properties based on copper, iron, for example.
- the contact is made of a precious material, for example based on gold or silver because it must offer a good compromise between its electrical, thermal and endurance performance.
- FIGS. 1a, 1b schematically illustrate the process currently used for producing such contacted parts.
- a piece 2 corresponding to the candle is cut from a first coil 1 of wire of a first material, one end is its top 6 and the other its foot 5.
- a piece 3 of wire is cut from a second coil a second material a piece 4 corresponding to the contact.
- the pieces 2 and 4 are assembled by welding, for example, the contact 4 coming at the top 6 of the candle 2.
- the foot 5 of the candle 2 is shaped so that it can be fixed on a base. 7 by giving it the shape of a rivet.
- This base 7 was previously cut from a dish. Its outline has a tab 8 provided with a notch 9 in which a driver will be housed since in the example described it is a pod base.
- the assembly of the base 7 and the candle 2 contacted is done by riveting or crimping. In FIG. 1b, the terminated contacted terminal is shown in section.
- the welding and stamping steps can be done simultaneously.
- This process is relatively long and expensive. It requires at least three different operations: manufacturing the contacted candle-rivet, cutting the base, assembling the candle-rivet to the base.
- the base can be cut on one side, the assembly and the shaping of the contacted candle-rivet can be done on another side but the riveting can take place only when the candle-rivet and the base present the one to the other correctly, which leads to good control over the distribution of parts and complicates the design of the machine used to assemble them at an industrial rate.
- the present invention aims to simplify the manufacture of such contacted parts by saving the production of a separate candle and the assembly operation at the base.
- the method for producing a contacted part, comprising a base and at least one contact comprises the following steps:
- this outline including at least one candle.
- the support is in the form of a strip.
- the candles have a height of about 5 to 10 times the thickness of the support.
- This finishing step can be a rolling, a striking, a running-in, a polishing.
- the assembly step may be a welding step or a step involving permanent deformation of the top of the candle and / or of the contact.
- the present invention also relates to a contacted part formed by a base and at least one candle at the top of which is a contact.
- the height of the candle is significantly greater than the thickness of the base.
- the candle is hollow and is a deformation of the base material.
- FIG. 3a a top view of a strip support transformed by the method according to the invention in which the assembly is done by riveting;
- Figures 2a and 2b show in longitudinal section and top view of a support subjected to the different stages of the process for producing a contacted part according to the invention.
- the support 20 is in the form of a strip because it will be transformed into a tool to be followed, but one could envisage that it has another shape.
- the part to be produced is comparable to that shown in FIG. 1a.
- this strip 20 having to be transformed both into the base 21 and into a candle 22 of the finished contacted part.
- Its material chosen for both its mechanical and electrical properties. It can be made on the basis of copper or iron for example.
- This strip 20 is gradually deformed by stamping.
- the candle 22 is then a deformation of the base material.
- the candle must have a height h significantly greater than the thickness e of the strip, the stamping required is therefore deep, it is necessary to make several passes until the required height h of candle 22 is obtained without risk of tearing the support material.
- the height of the candle 22 is typically of the order of 5 to 10 times the thickness of the strip, which is typically about 0.5 to 1 millimeter.
- a stamping press is used as a stamping tool having as many punch 23-die 24 pairs as there are passes to be made.
- Several candles are produced at the same time, but they are at different stages of production in the example described. It could be envisaged that several candles being at the same stage of production coexist on the strip.
- the candles 22 obtained are hollow, they define a well 33, the opening of which is, in the example, on the underside 31 of the strip 20.
- the next step consists in assembling at the top 35 of each candle 22 which has reached the correct height, a contact 28.
- the assembly will be done by welding, this welding possibly being, for example, resistance welding, by beam. high energy or whatever.
- Contact 28 comes from a wire or profile in which a piece 25 has previously been detached.
- the supply of material for contact 28 is illustrated by a coil 26.
- the shearing tool shown diagrammatically in FIGS. 2 bears the reference 27.
- two electrodes 29, 30 are used, one 29 which rests on the piece 25 in contact with the apex 35 and the other 30 which comes into contact with the opening of the well 33 delimited by candle 22.
- the resistance welding phase consists in circulating a current between the two electrodes 29, 30 so that it crosses the candle 22 and the piece 25, then maintaining a force between the candle 22 and the piece 25, following whereby the electrodes 29, 30 can deviate.
- the difficulty of this welding operation is that the electrode 30 coming into contact with the opening of the well 33 is located at the base of the candle 22 and which is distant from its top 35 and from the piece to be welded.
- the hollow candle 22 delimits a well 33 of suitable size, it is possible to use a fine electrode 30 which is inserted into the well 33 to its bottom as illustrated in FIG. 2c. Welding is then easier.
- the disadvantage is that in this configuration the candles occupy more space on the support and that a support makes it possible to produce fewer contacted parts.
- the next step is called trimming, it consists in separating the contacted part from the strip 20 by cutting the outline of the base 21 in the strip 20.
- This outline can include one or more candles 22.
- the contacted piece according to the invention is visible in Figure 2a.
- the strip undergoes, as it advances, several treatments one at each pass, so that several pieces are constantly in the tooling at different stages of manufacturing.
- one or more finished contact pieces come off from the strip 20.
- This step can consist of a typing step, a doughing using a tool 34 carrying a concave imprint, a polishing or even running-in. It is sought to eliminate the edges and burrs which may exist after cutting the piece 25 in order to obtain good quality parts free from defects.
- FIG. 2c shows in longitudinal section a support in the form of a strip transformed according to the method of the invention in which a ditching step is inserted between the welding step and the cutting step.
- the movement of the dowel 34 can be for example rotary or gyroscopic.
- FIGS 3a, 3b show in the manner of Figures 2a, 2b, 2c the different steps of the method according to the invention with an assembly by riveting.
- This riveting assembly comprises beforehand a step of producing an opening 36 at the top 35 of the candle 22, for example by drilling or punching.
- a punch 37 is shown, it acts from the upper face 32 of the strip 20 by attacking the top 35 of the candle 22.
- a knockout 38 is evacuated which corresponds to the material removed by the punch 37.
- the next step is a step of fitting a rivet 39, the head of which will form the contact 28 and the rod 40 is threaded into the opening 36 made.
- This rod 40 will be put in the well 33 of the candle 22 using a riveting tool 41 in two parts conventional in itself.
- the distribution of the rivets for the positioning can be done by vibrating bowl 42, the rivets having a good orientation.
- the introduction of the rivet 39 into the opening 36 can be done by gravity, but one can also consider using a compressed air pulse.
- step of finishing the contact surface 28 is not necessarily required if the head of the rivet 39 has not suffered during assembly.
- FIG. 3c schematically illustrates a step of assembling the contact 28 by crimping.
- a piece 25 is introduced into the opening 36.
- the candle 22-piece 25 assembly is deformed by so as to obtain a contact 28 of suitable shape, part of which is housed inside the candle 22.
- the base 21 of the contacted part must have at least one hole 44 to be used for fixing or connecting it, the production of this hole 44 can take place during an additional drilling step inserted between two steps previously described. It is also possible that this drilling step in the support is simultaneous with one of the previously described steps. It is assumed that the drilling takes place during the transformation by stamping, a little before the candle has reached its final shape, in FIGS. 2a, 2b on the seventh pass or between the transformation step and the assembly step, or in Figures 3a, 3b on the ninth pass. These figures are in no way limiting.
- the material used for the piece 25 or the rivet 39 is a precious material conventionally used for contacts, based on gold or silver for example.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Switches (AREA)
- Adornments (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99923696A EP1090444A1 (fr) | 1998-06-26 | 1999-06-08 | Procede de realisation d'une piece contactee |
CA002335907A CA2335907A1 (fr) | 1998-06-26 | 1999-06-08 | Procede de realisation d'une piece contactee |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/08161 | 1998-06-26 | ||
FR9808161A FR2780562B1 (fr) | 1998-06-26 | 1998-06-26 | Procede de realisation d'une piece contactee |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000001043A1 true WO2000001043A1 (fr) | 2000-01-06 |
Family
ID=9527930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/001352 WO2000001043A1 (fr) | 1998-06-26 | 1999-06-08 | Procede de realisation d'une piece contactee |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1090444A1 (fr) |
CA (1) | CA2335907A1 (fr) |
FR (1) | FR2780562B1 (fr) |
WO (1) | WO2000001043A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10022604A1 (de) * | 2000-05-09 | 2001-11-29 | Krupp Uhde Gmbh | Verfahren zur Herstellung von elektrischen Kontaktstreifen |
CN103764319A (zh) * | 2011-08-26 | 2014-04-30 | 优美科股份公司及两合公司 | 生产一种用于电接触点和接触件的半成品的方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106158466A (zh) * | 2016-08-12 | 2016-11-23 | 公牛集团有限公司 | 开关组装机上的触片组装装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3457761A (en) * | 1967-03-20 | 1969-07-29 | Western Electric Co | Method and apparatus for drawing and stretching a flat blank into a tubular shell |
US4010344A (en) * | 1975-03-28 | 1977-03-01 | Joyal Products, Incorporated | Apparatus for transferring a workpiece over a rough surface |
FR2561457A1 (fr) * | 1984-03-19 | 1985-09-20 | Checon Corp | Procede de realisation de contacts electriques |
DE3725478A1 (de) * | 1987-07-31 | 1989-02-09 | Siemens Ag | Verfahren zur herstellung von kontakttraegern fuer relais und dergleichen |
-
1998
- 1998-06-26 FR FR9808161A patent/FR2780562B1/fr not_active Expired - Fee Related
-
1999
- 1999-06-08 CA CA002335907A patent/CA2335907A1/fr not_active Abandoned
- 1999-06-08 EP EP99923696A patent/EP1090444A1/fr not_active Withdrawn
- 1999-06-08 WO PCT/FR1999/001352 patent/WO2000001043A1/fr not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3457761A (en) * | 1967-03-20 | 1969-07-29 | Western Electric Co | Method and apparatus for drawing and stretching a flat blank into a tubular shell |
US4010344A (en) * | 1975-03-28 | 1977-03-01 | Joyal Products, Incorporated | Apparatus for transferring a workpiece over a rough surface |
FR2561457A1 (fr) * | 1984-03-19 | 1985-09-20 | Checon Corp | Procede de realisation de contacts electriques |
DE3725478A1 (de) * | 1987-07-31 | 1989-02-09 | Siemens Ag | Verfahren zur herstellung von kontakttraegern fuer relais und dergleichen |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10022604A1 (de) * | 2000-05-09 | 2001-11-29 | Krupp Uhde Gmbh | Verfahren zur Herstellung von elektrischen Kontaktstreifen |
CN103764319A (zh) * | 2011-08-26 | 2014-04-30 | 优美科股份公司及两合公司 | 生产一种用于电接触点和接触件的半成品的方法 |
Also Published As
Publication number | Publication date |
---|---|
FR2780562A1 (fr) | 1999-12-31 |
CA2335907A1 (fr) | 2000-01-06 |
FR2780562B1 (fr) | 2000-09-29 |
EP1090444A1 (fr) | 2001-04-11 |
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