WO2007038973A1 - Method of manufacturing an electrical contact and electrical contact - Google Patents
Method of manufacturing an electrical contact and electrical contact Download PDFInfo
- Publication number
- WO2007038973A1 WO2007038973A1 PCT/EP2005/011644 EP2005011644W WO2007038973A1 WO 2007038973 A1 WO2007038973 A1 WO 2007038973A1 EP 2005011644 W EP2005011644 W EP 2005011644W WO 2007038973 A1 WO2007038973 A1 WO 2007038973A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- head
- shell
- contact
- spring
- electrical contact
- 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
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/04—Pins or blades for co-operation with sockets
- H01R13/05—Resilient pins or blades
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2428—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using meander springs
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention relates to a method of manufacturing an electrical contact (10) for being mounted in an electrical connector, said electrical contact (10) comprising a connection element (12) for being connected to a wire, a head (14) for coming into contact with another electrical contact of another complementary electrical connector, said head (14) being able to slide relative to the connection element (12) along a sliding direction (X), a spring (16) connected at one end to the connection element (12) and at the other end to the head (14), for bringing back the head (14) relative to the connection element (12) along the sliding direction (X) to a rest position. The method comprises the steps of cutting out of a conductive sheet a contact pattern (40) comprising a connection element part (42), a head part (44) and a spring part (46) and forming the electrical contact (10) from the contact pattern (40), the spring part (46) being obtained by cutting out from the sheet a winding strip (51) comprising at least one elastically deformable winding (51B).
Description
Method of manufacturing an electrical contact and electrical contact
TECHNICAL FIELD OF THE INVENTION
The invention relates to a method of manufacturing an electrical contact of the push-button type, intended to fit in an electrical connector, and to an electrical contact.
BACKGROUND OF THE INVENTION
A push-button contact comprises a connection element for being connected to an electrical component and in particular a wire, usually by crimping, and a head for coming into contact with another electrical contact of another complementary electrical connector.
The head is slidingly mounted relative to the connection element along a sliding direction and brought back to a rest position by a spring. The other electrical contact of the complementary connector is usually a nearly flat or slightly curved surface, sufficiently large to allow a large mismatch between the axes of the two complementary connectors.
Therefore, an advantage of the push-button system over more conventional mal/female contacts systems is that it allows large tolerances in the positioning of the two complementary connectors, in all three directions, while providing a good contact pressure for a low electrical resistance.
In prior art, the contact is manufactured by cutting, out of a conductive sheet, a plane contact pattern comprising a connection element part, a head part and a straight plane strip. The spring is formed from the plane strip by multiple cambering, which leads to a corrugated strip. The head and connection elements are then formed from the head and connection element parts by rolling up the contact pattern along the sliding direction.
Such contact is for instance known from WO 95/35587. Problems arise from the cambering of the strip. First, bending the strip requires quite complex and thus expensive machine outfit. Second, the cambering is generally not accurate enough to give the required precision on the spring characteristic, defining the restoring force for a given stroke.
Moreover, the known method requires a large conductive sheet, since the straight plane strip used to form the spring element has an elongated shape. Lot of the conductive sheet is then lost for forming the spring element.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a method of manufacturing an electrical contact which is easy to manufacture and which provides a good contact pressure.
Accordingly, the invention provides a method of manufacturing an electrical contact as set forth in claim 1. Other features of the method are set forth in dependant claims 2 to 10.
The invention further provides an electrical contact as set forth in claim 11. Other features of the contact are set forth in dependant claims 12 to 22.
The invention will be better understood on reading the following description of one particular embodiment of the invention, given as a non-limiting example.
BRIEF DESCRIPTION OF THE DRAWINGS
- Figures 1A, 1 B and 1C are perspective views of an electrical contact according to a first embodiement of the invention;
- Figure 2 is a perspective view of an electrical contact according to a second embodiment of the invention;
- Figure 3 is a plan view of a contact pattern for manufacturing the contact of figures 1A, 1B and 1C; and - Figure 4 is a block diagram of a method of manufacturing the contact of figures 1A, 1B and 1C, using the contact pattern of figure 3.
DETAILED DESCRIPTION
Figures 1A, 1 B and 1C show an electrical contact 10 intended to be mounted in an electrical connector (not shown) used to electrically connect a seat of a vehicle to its support frame in the vehicle. The contact 10 comprises a connection element 12, a contact head 14, a spring 16 and a shell 18, all in a single piece, i.e. of unitary construction.
The connection element 12 is intended to be connected to a wire (not shown). In the embodiment described, the connection element 12 is arranged to be crimped to the wire. Such an arrangement is well-known and will not be described further. The head 14 is intended to slide relative to the connection element 12 along a sliding direction X. The head 14 comprises a rectangular cross-section cylinder body 20 orientated along the sliding direction X.
The head also comprises a contact tab 24, extending from the wall of the cylinder body 20 and covering an end opening of the cylinder body 20. The contact tab 24 is intended to come into contact with another contact of another connector.
The head 14 further comprises two tabs 26 cut out in the wall of the cylinder body 20, extending along the X direction and protruding away radially from the cylinder. The head 14 is connected at its end opposite to the contact tab 24 to the connection element 12 by a spring 16. The spring 16 is intended to bring back the head 14 along the sliding direction X to a rest position, which is the position shown in figures 1A and 1B.
The spring 16 is a winding strip 28 comprising a plurality of side-by- side rungs 28A, having the shape of split rectangular rings with a size corresponding to the size of the rectangular cylinder body 20. The rungs 28A are parallel to each other and perpendicular to the sliding direction X. They are linked one to another by a winding 28B located alternatively at each end of the rungs 28A. In other words, one end of a rung 28A is linked by a winding 28B to a previous rung 28A, whereas the other end is linked by another winding 28B to a next rung 28A.
In this configuration, the winding strip 28 is rolled up around the sliding direction X and the windings 28B located at one end of the rungs 28A are near the windings located at the other end of the rungs 28A. Thus, the winding strip follows longitudinally a line which winds on a geometrical surface. In the present case, the geometrical surface is the rectangular cylinder defined by the body 20. That is to say that the line winds on the geometrical surface in prolongation of the body 20.
The smallest dimension of the winding strip is perpendicular to the geometrical surface, so that the thickness of the strip is perpendicular to the sliding direction X, and folds upon itself to form the windings.
The shell 18 is connected both to the connecting element 12 and to the spring 16. The shell 18 is wrapped up around the spring 16 and at least in part the head 14 at its rest position, and has a rectangular cross section cylinder shape along the X direction. Thus, the shell 18 entirely encompass the spring 16 and at least in part the head 14 around the sliding direction X.
The spring 16 provides electrical connectivity between the head 14 and the connecting element 12. Because the spring is a narrow strip, its resistivity is high, so as to provide electrical connectivity with low resistivity between the head 14 and the connection element 12, the tabs 26 of the head 14 come into contact with this shell 18 while the head 14 slides relative to the shell 18. This contact with the shell 18 also helps the guiding of the head 14 along the slinding direction X.
Preferably, the contact 10 comprises a slot 36, provided in the head 14, and intended to cooperate with a finger 38 extending form the shell 18.
The slot 36 is rectangular with its length extending along the X direction. The finger 38 extends toward the inside of the shell, i.e. toward the head, perpendicularly to the X direction. The finger 38 penetrates in the slot and cooperates with the edge of the slot 36 in order to keep the spring 16 partially compressed while not in contact with the other complementary connector. The pre-compression of the spring enables the contact to have a short length since the strength of the spring is high for a short stroke of the head 14 from its rest position to its compressed position.
In use, the contact tab 24 come into contact with the other connector. Further to the contact, the head 14 is pushed back by the other connector. The spring 16 is compressed and produces in return a restoring force and thus a good contact pressure. The stroke of the spring; i.e. its possible displacement, must be sufficient to achieve a desired restoring force and counterbalance the tolerance between the two connectors.
In figure 2, the contact is very similar to the one of figure 1A, 1B and 1C. It differs by the fact that the head 14, the spring 16 and the shell 18 have a circular shape around the slinding direction X.
The method of manufacturing the contact of figures 1A.1B and 1C will be explained below, with reference to figures 3 and 4.
The method first comprises a step 100 of cutting out of a conductive sheet, such as a metal sheet, a plane contact pattern 40 comprising a connection element part 42, a head part 44, a spring part 46 and a shell part 48.
The conductive sheet is cut out along its thickness, i.e. perpendicularly to its largest surface.
The head part 44 comprises a rectangular plate 50 in which the tabs 26 are cut of, and from which the contact tab 24 extends in a coplanar way. Moreover, the slot 36 is cut out between the tabs 26.
The spring part 46 comprises a plane winding strip pattern 51 , whose thickness corresponds to the thickness of the sheet. The winding strip pattern 51 comprises rectilinear side-by-side rung patterns 51A, parallel to each other and linked two by two by windings 51 B placed alternatively at each end of the rung patterns 51 A. The windings 51 B are cut of from the sheet with dimensions such that they are elastically deformable. In other words, the winding strip 51 extends longitudinally along a line which winds on the largest surface of the sheet, i.e. a face of the sheet in contradistinction to its thickness.
The shell part 48 is made of a rectangular plate 52 comprising on one side a locking tab 54. A corresponding locking gap 56 is cut out on the opposite side, for receiving the locking tab 54. The finger 38 is cut out from the rectangular plate.The extremity of the finger connected to the rest of the shell part 48 is located below, along the X direction, the position of the slot 36.
The manufacturing method then comprises forming steps 200, 300 and
400, during which the electrical contact 10 is formed from the contact pattern 40. First, during a step 200, the spring part 46 and the head part 42 are rolled up around the sliding direction X so as to form the rectangular cross section cylinder body 20 of the head 14 and the rectangular cross section surface on
which lies the spring 16. During this step, the locking tab 54 and the locking gap 56 are engaged so as to prevent the cylinder 20 of the head 14 from unfolding.
Then, during a step 300, the contact tab 24 is fold down over the aperture end of the cylinder body 20 of the head 14, and the tabs 26 are spread away from the cylinder body 20. Also during this step, the finger is folded perpendicularly to the X direction.
Finally, during step 400, the connection part 42 and shell part 48 are rolled up around the sliding direction X. More precisely, the shell part 48 is wrapped up around the spring 16 and at least in part the head 14 at its rest position. During this step, the spring 10 is compressed such that the finger 38 is able to penetrate in the slot 36.
This manufacturing method clearly provides an efficient and cheap contact. In particular, it should be noted that the fact that the shell 18 is in a single piece with the connecting element 12 ensures good electrical conductivity between these two elements.
Claims
1. Method of manufacturing an electrical contact (10) for being mounted in an electrical connector, said electrical contact (10) comprising a connection element (12) for being connected to an electrical component, a head (14) for coming into contact with another electrical contact of another complementary electrical connector, said head (14) being able to slide relative to the connection element (12) along a sliding direction (X), a spring (16) connected at one end to the connection element (12) and at the other end to the head (14), for bringing back the head (14) relative to the connection element (12) along the sliding direc- tion (X) to a rest position, comprising the steps of:
- cutting out (100) of a conductive sheet a contact pattern (40) comprising a connection element part (42), a head part (44) and a spring part (46),
- forming (200, 300, 400) the electrical contact (10) from the contact pattern (40), characterised in that the spring part (46) is obtained by cutting out (200) from the sheet a winding strip (51 ) comprising at least one elastically deformable winding (51B).
2. Method according to claim 1 , characterised by cutting out the winding strip (51 ) longitudinally along a line which winds on a largest surface of the sheet, such that the smallest dimension of the winding strip is perpendicular to the surface.
3. Method according to claim 1 or 2, characterised by cutting out the winding strip (51) so that it comprises a plurality of side-by-side rungs (51A) linked one to another by a winding (51B) located alternatively at each end of the rungs (51A).
4. Method according to claim 3, characterised by cutting out the rungs (51A) so that they extend parallel to each other and perpendicular to the sliding direction (X).
5. Method according to any of claims 1 to 4, characterised in that the step (200, 300, 400) of forming the electrical contact (10) from the contact pattern
(40) comprises rolling up (300, 400) the contact pattern (40) around the sliding direction (X).
6. Method according to claims 4 and 5, characterised in that forming the spring (16) comprises rolling up (300) the winding strip (51) around the sliding direction (X) so that the windings (51 B) located at one end of the rungs (51A) are brought near the windings (51 B) located at the other end of the rungs (51 A).
7. Method according to any of claims 1 to 6, wherein the contact (10) comprises a shell (18) and the contact pattern (40) comprises a shell part (48), characterised by forming the shell (18) from the shell part (48) by wrapping up (400) the shell part (48) around the spring (16) and at least in part the head (14).
8. Method according to claim 7, characterised in that the shell part (48) is wrapped up so as to entirely encompass the spring (16) and at least in part the head (14).
9. Method according to claim 7 or 8, characterised in that forming the contact (10) comprises forming in one amongst the head (14) and the shell (18) a tab (26) contacting the other amongst the head (14) and the shell (18) so as to ensure electrical conductivity while the head (14) slides relative to the shell (18).
10. Method according to any of preceding claims, characterised in that the connection element (12), the head (14), the spring (16) and the shell (18) are of unitary construction.
11. Electrical contact (10) for being received in an electrical connector, said contact (10) comprising:
- a connection element (12) for being connected to an electrical component,
- a head (14) for coming into contact with another electrical contact of another complementary electrical connector, said head (14) being able to slide relative to the connection element (12) along a sliding direction (X),
- a spring (16) connected at one end to the connection element (12) and at the other end to the head (14), for bringing back the head (14) relative to the connection element (12) along the sliding direction (X) to a rest position, characterised in that the spring (16) is a winding strip (28) comprising at least one elastically deformable winding (28B), the winding strip (28) following longitudinally a line which winds on a geometrical surface, the smallest dimension of the winding strip (28) being perpendicular to the geometrical surface.
12. Electrical contact (10) according to claim 11 , characterised in that the winding strip (28) comprises a plurality of side-by-side rungs (28A) linked two by two by a winding (28B) located alternatively at each end of the rungs (28A).
13. Electrical contact (10) according to claim 12, characterised in that the rungs (28A) extend parallel to each other and perpendicular to the sliding direction (X).
14. Electrical contact (10) according to claim 13, characterised in that the geometrical surface is a cylinder such that the windings (28B) located at one end of the rungs (28A) are near the windings (28B) located at the other end of the rungs (28A).
15. Electrical contact (10) according to any of claims 11 to 14, characterised in that it comprises a shell (18) wrapped up around the spring (16) and at least in part the head (14).
16. Electrical contact (10) according to claim 15, characterised in that the shell (18) entirely encompass the spring (16) and at least in part the head (14) around the sliding direction (X).
17. Electrical contact (10) according to claim 15 or 16, characterised in that one amongst the head (14) and the shell (18) comprises a tab (26) contact- ing the other amongst the head (14) and the shell (18) so as to ensure electrical conductivity while the head (14) slides relative to the shell (18).
18. Electrical contact (10) according to any of claims 15 to 17, characterised in that the connection element (12), the head (14), the spring (16) and the shell (18) are of unitary construction.
19. Electrical contact (10) according to any of claims 15 to 18, characterised in that the connection element (12) prolongates the shell (18) along the sliding direction (X).
20. Electrical contact (10) according to any of claims 15 to 19, characterised in that the shell (18) comprises a locking tab (54) and a corresponding locking gap (56), the locking tab (54) being received in the locking gap (56) so as to keep the shell (18) wrapped around the spring (16) and at least in part the head (14) around the sliding direction (X).
21. Electrical contact (10) according to any of claims 11 to 20, characterised in that it comprises means (36, 38) for keeping the spring (16) compressed while not in concact with the other complementary connector.
22. Electrical contact (10) according to claim 21 and claim 15, charac- terised in that the means for keeping the spring (16) compressed comprises a slot
(36) cut out along the sliding direction (X) in one amongst the head (14) and the shell (18) and a finger (38) extending perpendicularly to the slinding direction (X) from the other amongst the head (14) and the shell (18), and penetrating in the slot (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2005/011644 WO2007038973A1 (en) | 2005-09-29 | 2005-09-29 | Method of manufacturing an electrical contact and electrical contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2005/011644 WO2007038973A1 (en) | 2005-09-29 | 2005-09-29 | Method of manufacturing an electrical contact and electrical contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007038973A1 true WO2007038973A1 (en) | 2007-04-12 |
Family
ID=36540216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/011644 WO2007038973A1 (en) | 2005-09-29 | 2005-09-29 | Method of manufacturing an electrical contact and electrical contact |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2007038973A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010037498A1 (en) * | 2010-09-13 | 2012-04-19 | Hachadorian Design & Calculation Gmbh | Electric contact |
| JP2012182018A (en) * | 2011-03-01 | 2012-09-20 | Yazaki Corp | Abutting terminal |
| WO2012136416A1 (en) * | 2011-04-06 | 2012-10-11 | Robert Bosch Gmbh | Plug-type connector for direct contact-making on a printed circuit board |
| WO2012141337A1 (en) * | 2011-04-14 | 2012-10-18 | Yazaki Corporation | Butted connector comprising a press - contacted butter terminal hold by a lance and covered on both sides by a protection wall |
| JP2014199783A (en) * | 2013-03-29 | 2014-10-23 | 日本圧着端子製造株式会社 | Contactor |
| WO2016047785A1 (en) * | 2014-09-26 | 2016-03-31 | 株式会社ティー・ピー・エス | Conductive element, plate-shaped member for conductive element, and conductive element manufacturing method |
| DE102015207958A1 (en) * | 2015-04-29 | 2016-11-03 | Te Connectivity Germany Gmbh | Contact arrangement and sleeve for a contact arrangement |
| EP3270466A1 (en) * | 2016-07-11 | 2018-01-17 | Alps Electric Co., Ltd. | Spring contact, socket including spring contact, and method for manufacturing spring contact |
| CN107611644A (en) * | 2016-07-11 | 2018-01-19 | 阿尔卑斯电气株式会社 | Spring contact and the socket for having used spring contact |
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| US4778404A (en) * | 1983-12-27 | 1988-10-18 | Amp Incorporated | Spring terminal |
| WO1995035587A1 (en) * | 1994-06-21 | 1995-12-28 | Anthena S.A. | Sliding contact electrical connector |
| EP0908969A1 (en) * | 1997-10-07 | 1999-04-14 | AMPHENOL-TUCHEL ELECTRONICS GmbH | Electrical contact with associated plug connector |
| US5954529A (en) * | 1995-12-20 | 1999-09-21 | Berg Technology, Inc. | Connector with spring contact member and shorting means |
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| US4778404A (en) * | 1983-12-27 | 1988-10-18 | Amp Incorporated | Spring terminal |
| US4773877A (en) * | 1986-08-19 | 1988-09-27 | Feinmetall Gmbh | Contactor for an electronic tester |
| WO1995035587A1 (en) * | 1994-06-21 | 1995-12-28 | Anthena S.A. | Sliding contact electrical connector |
| US5954529A (en) * | 1995-12-20 | 1999-09-21 | Berg Technology, Inc. | Connector with spring contact member and shorting means |
| EP0908969A1 (en) * | 1997-10-07 | 1999-04-14 | AMPHENOL-TUCHEL ELECTRONICS GmbH | Electrical contact with associated plug connector |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010037498B4 (en) * | 2010-09-13 | 2013-11-07 | Hachadorian Design & Calculation Gmbh | Electric contact |
| DE102010037498A1 (en) * | 2010-09-13 | 2012-04-19 | Hachadorian Design & Calculation Gmbh | Electric contact |
| US9806449B2 (en) | 2010-09-13 | 2017-10-31 | Hachadorian Design & Calculation Gmbh | Electrical contact |
| JP2012182018A (en) * | 2011-03-01 | 2012-09-20 | Yazaki Corp | Abutting terminal |
| WO2012136416A1 (en) * | 2011-04-06 | 2012-10-11 | Robert Bosch Gmbh | Plug-type connector for direct contact-making on a printed circuit board |
| US9196983B2 (en) | 2011-04-06 | 2015-11-24 | Robert Bosch Gmbh | Plug connector for direct contacting on a circuit board |
| WO2012141337A1 (en) * | 2011-04-14 | 2012-10-18 | Yazaki Corporation | Butted connector comprising a press - contacted butter terminal hold by a lance and covered on both sides by a protection wall |
| JP2014199783A (en) * | 2013-03-29 | 2014-10-23 | 日本圧着端子製造株式会社 | Contactor |
| TWI686018B (en) * | 2014-09-26 | 2020-02-21 | 日商Ｔｐｓ創作股份有限公司 | Conductive element, plate-shaped member for conductive element, and method of manufacturing conductive element |
| WO2016047785A1 (en) * | 2014-09-26 | 2016-03-31 | 株式会社ティー・ピー・エス | Conductive element, plate-shaped member for conductive element, and conductive element manufacturing method |
| JPWO2016047785A1 (en) * | 2014-09-26 | 2017-04-27 | 株式会社ティー・ピー・エス | Conductive element, plate member for conductive element, and method of manufacturing conductive element |
| CN106716724A (en) * | 2014-09-26 | 2017-05-24 | 株式会社Tps | Conductive element, plate-shaped member for conductive element, and conductive element manufacturing method |
| DE102015207958A1 (en) * | 2015-04-29 | 2016-11-03 | Te Connectivity Germany Gmbh | Contact arrangement and sleeve for a contact arrangement |
| CN107611644A (en) * | 2016-07-11 | 2018-01-19 | 阿尔卑斯电气株式会社 | Spring contact and the socket for having used spring contact |
| CN107611653A (en) * | 2016-07-11 | 2018-01-19 | 阿尔卑斯电气株式会社 | The manufacture method of spring contact, the socket for having used spring contact and spring contact |
| TWI643409B (en) * | 2016-07-11 | 2018-12-01 | 阿爾普士電氣股份有限公司 | Spring contact, socket including spring contact, and method for manufacturing spring contact |
| EP3270466A1 (en) * | 2016-07-11 | 2018-01-17 | Alps Electric Co., Ltd. | Spring contact, socket including spring contact, and method for manufacturing spring contact |
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