GB2069377A - Manufacture of carrier strip for electrical contact members - Google Patents
Manufacture of carrier strip for electrical contact members Download PDFInfo
- Publication number
- GB2069377A GB2069377A GB8101410A GB8101410A GB2069377A GB 2069377 A GB2069377 A GB 2069377A GB 8101410 A GB8101410 A GB 8101410A GB 8101410 A GB8101410 A GB 8101410A GB 2069377 A GB2069377 A GB 2069377A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metallic strip
- strip
- contact
- cantilevered
- portions
- Prior art date
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000000717 retained effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Manufacture Of Switches (AREA)
- Wire Bonding (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Contacts (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
A carrier strip 32 for electrical contact members comprises an elongate metallic strip in which are formed a plurality of orifices 34, 50. The orifices are shaped to produce cantilevered portions 36 in the metallic strip which are deformable out of the plane of the metallic strip to permit the insertion between the strip and each cantilevered portion of an electrical contact member. The cantilevered portions may be U-shaped or L-shaped. The carrier strip has contact portions 12 and is formed by pressing. Contact legs 16 of the contact members are inserted between the cantilevered portions and the strip in line with each contact portion and welded at a position 18. A portion of the strip is then cropped out so that each contact portion is supported by a contact leg which, in turn, is supported on the strip by the cantilevered portion. <IMAGE>
Description
1
GB 2 069 377 A 1
SPECIFICATION
Improvements in or relating to carrier strips for electrical contact members and methods of making such carrier strips and the electrical 5 contact members
This invention relates to carrier strips for electrical contact members and to methods of making such carrier strips and electrical contact members.
10 It is an object of the present invention to provide a carrier strip for electrical contact members which will securely hold the contact members even when the carrier strip is guided round quite sharp corners and which will also 15 allow the electrical contact members to be readily removed therefrom for insertion into electrical apparatus such as a multi-contact electrical connector. A further object of the invention is to provide a simple and cheap method of making 20 carrier strips for electrical contact members and the electrical contact members.
According to the present invention a carrier strip for electrical contact members comprises an elongate metallic strip having formed therein a 25 plurality of orifices, the orifices being shaped to result in the formation of a plurality of cantilevered portions in the metallic strip each of which is deformable out of the plane of the metallic strip to permit the insertion between each cantilevered 30 portion and the metallic strip of at least a portion of an electrical contact member.
Thus a plurality of pairs of orifices may be formed in the metallic strip each pair comprising substantially U-shaped orifice, and a substantially 35 rectangular shaped orifice arranged between the two limbs of the U-shaped orifice to form a substantially U-shaped cantilevered portion in the metallic strip.
The substantially U-shaped orifice and the 40 substantially rectangular shaped orifice may be connected by a cutaway portion in the metallic strip to form two substantially L-shaped cantilevered portions in the metallic strip.
The invention also comprises a method of 45 making a carrier strip and electrical contact members comprising the steps of producing an elongate metallic strip having a plurality of contact portions formed thereon and a plurality of orifices formed therein, the orifices being shaped to result 50 in the formation of cantilevered portions in the metallic strip in line with the contact portions,
each cantilevered portion being deformable out of the plane of the metallic strip to permit the insertion between each cantilevered portion and 55 the metallic strip of at least a portion of an electrical contact member, inserting a contact leg between each cantilevered portion and the metallic strip in line with each contact portion, welding the contact leg to the metallic strip and 60 cutting the metallic strip whereby the contact portion is severed from the metallic strip and retained on the contact leg.
Preferably the metallic strip with the contact portions is made by pressing.
65 The metallic strip is preferably formed with the contact portions projecting at right angles from one side of the axis of the metallic strip, but may be formed with contact portions projecting from both sides of the carrier strip. In this case the 70 carrier strip is separated along its central axis before the contact legs are located in position.
Embodiments of the invention will now be described by way of example only with reference to the accompanying drawings in which 75 Figure 1 shows a portion of a carrier strip for electrical contacts according to the present invention
Figure 2 is a cross-sectional view of the carrier strip shown in Figure 1 along the line 2—2 and 80 Figure 3 shows a portion of a modified form of carrier strip.
In Figure 1 there is shown part of a carrier strip 32 which is formed by pressing. The strip includes a plurality of contact portions 12 extending at 85 right angles to the longitudinal axis of the strip and a number of slots 50 having a substantially U-shape and a number of slots 34 having a substantially rectangular shape positioned within the legs of the U-shaped slots 50. A further slot 52 90 connects the slots 50 and 34 to form two substantially L-shaped portions 36 in the carrier strip 32. These portions are cantilevered and are deflectable away from the plane of the carrier strip 32.
95 The portions 36 are formed in line with the contact portions 12 and in between these portions 36 and the carrier strip 32 are fed contact legs 16, one in line with each of the contact portions 12. The portions 36 hold the contact legs 16 in 100 contact with the carrier strip 32 by spring force.
Each contact leg 16 is then welded to the contact strip 32 at a spot 18 adjacent to the lower end of its respective contact portion 12.
A part 42 (shown cross-hatched in Figure 1) of 105 the carrier strip is now cut away between the contact portions 12, the part 42 reaching slots 40 formed in the carrier strip 32 so that the contact portions are completely detached from the carrier strip 32. The carrier strip 32 now acts purely as a 110 bandolier, supporting the contact legs 16 with the contact portions 12 welded to the ends of the contact legs 16. The connectors thus formed can then easily be removed from the bandolier and inserted into, for example, an electrical edge 115 connector.
The slots 34,40, 50 and 52 can be formed in the same pressing operation as the formation of the carrier strip 32, or any of the slots can be formed immediately before the welding operation. 120 The carrier strip 32 may be formed with contact portions 12 extending at right angles from opposite sides of the strip. This strip is then parted along its central axis to prodice two separate carrier strips.
125 Figure 2 is a cross-sectional view of the carrier strip 32 showing the cantilever springs 36 acting on the contact legs 16 as shown in Figure 1. The springs can be two L-shapes 36 or a single U-shape 38 as shown in Figure 3. In the former case
2
GB 2 069 377 A 2
the finished connector can be withdrawn from the bandolier by pulling the legs 16 lengthwise out from under the springs 36 or by pulling perpendicularly from the strip 32. In the latter case 5 the legs 16 can only be withdrawn by pulling them lengthwise from under the spring 38. Slightly raised portions 44 are provided in the strip to facilitate the welding operation.
In the two embodiments selected parts of the 10 contact portions 12 may be plated, such as with gold, prior to the welding operation or prior to the parting operation.
Also in each case the welding operation may be carried out by welding one leg 16 at a time or a 15 predetermined number of legs can be fed at a known speed under a weld head which is pulsed to coincide with the parts to be welded.
Alternatively the carrier strip can be fed continuously under a weld head which can be 20 arranged to pulse continuously and possibly weld more than once on any leg. Any suitable method of welding can be used.
As well as the legs 16 being retained on the carrier strip by the springs described, additional 25 external means of clamping and locating the legs to the strip can be arranged.
Either prior to welding or after welding and cropping, the legs 16 can be movable axially on the carrier strip 32 so that subsequent processes 30 such as swaging or forming the leg can be carried out.
Claims (9)
1. A carrier strip for electrical contact members comprising an elongate metallic strip having
35 formed therein a plurality of orifices characterised in that the orifices are shaped to result in the formation of a plurality of cantilevered portions in the metallic strip each of which is deformable out of the plane of the metallic strip to permit the 40 insertion between each cantilevered portion and the metallic strip of at least a portion of an electrical contact member.
2. A carrier strip as claimed in claim 1 characterised in that a plurality of pairs of orifices
45 are formed in the metallic strip, each pair comprising a substantially U-shaped orifice and a substantially rectangular shaped orifice arranged between the two limbs of the U-shaped orifice to form a substantially U-shaped cantilevered portion
50 in the metallic strip.
3. A carrier strip as claimed in claim 2 characterised in that the substantially U-shaped orifice and the substantially rectangular shaped orifice are connected by a cutaway portion in the
55 metallic strip to form two substantially L-shaped cantilevered portions in the metallic strip.
4. A method of making a carrier strip and electrical contact members characterised by the steps of producing an elongate metallic strip
60 having a plurality of contact portions formed thereon and a plurality of orifices formed therein, the orifices being shaped to result in the formation of cantilevered portions in the metallic strip in line with the contact portions, each cantilevered
65 portion being deformable out of the plane of the metallic strip to permit the insertion between each cantilevered portion and the metallic strip of at least a portion of an electrical contact member, inserting a contact leg between each cantilevered
70 portion and the metallic strip in line with each contact portion, welding the contact leg to the metallic strip and cutting the metallic strip whereby the contact portion is severed from the metallic strip and retained on the contact leg.
75
5. A method as claimed in claim 4
characterised in that the metallic strip with the contact portions is made by pressing.
6. A method as claimed in claim 4 or claim 5 characterised in that the metallic strip is formed
80 with the contact portions projecting at right angles from one side of the axis of the metallic strip.
7. A method as claimed in claim 4 or claim 5 characterised in that the metallic strip is formed with the contact portions projecting from both
85 sides of the metallic strip, the metallic strip being separated along its central axis before the contact legs are located in position.
8. A carrier strip for electrical contact members constructed substantially as hereinbefore
90 described with reference to the accompanying drawings.
9. A method of making a carrier strip and electrical connectors substantially as hereinbefore described with reference to the accompanying
95 drawings.
Printed for Her Majesty's Stationery Office by the Courier Press. Leamington Spa, 1981. Published by the Patent Office, 25 Southampton Buildings, London, WC2A 1AY, from which copies may be obtained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8005319 | 1980-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2069377A true GB2069377A (en) | 1981-08-26 |
| GB2069377B GB2069377B (en) | 1983-02-02 |
Family
ID=10511434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8101410A Expired GB2069377B (en) | 1980-02-16 | 1981-01-16 | Manufacture of carrier strip for electrical contact members |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0034405B1 (en) |
| AT (1) | ATE8189T1 (en) |
| DE (1) | DE3164349D1 (en) |
| GB (1) | GB2069377B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2282089A (en) * | 1993-08-19 | 1995-03-29 | Junichi Nakazawa | Attaching lead elements to electronic components |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2663471B1 (en) * | 1990-06-13 | 1992-09-11 | Labinal | ELECTRICAL CONNECTION ASSEMBLY. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2348674B2 (en) * | 1973-09-27 | 1976-09-23 | Siemens AG, 1000 Berlin und 8000 München | CARRIER STRIPS AS A SUPPORT DEVICE FOR PRODUCING ELECTRICAL CONNECTORS |
| GB1424180A (en) * | 1974-07-30 | 1976-02-11 | Cannon Electric Great Britain | Releasable contacts for electrical connectors |
| NL7413112A (en) * | 1974-10-04 | 1976-04-06 | Du Pont Berg Electronics Div | CHAIN PLATE PIN. |
| GB2057311B (en) * | 1979-08-31 | 1983-03-09 | Plessey Co Ltd | Making electrical connectors |
-
1981
- 1981-01-16 DE DE8181300192T patent/DE3164349D1/en not_active Expired
- 1981-01-16 EP EP81300192A patent/EP0034405B1/en not_active Expired
- 1981-01-16 GB GB8101410A patent/GB2069377B/en not_active Expired
- 1981-01-16 AT AT81300192T patent/ATE8189T1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2282089A (en) * | 1993-08-19 | 1995-03-29 | Junichi Nakazawa | Attaching lead elements to electronic components |
| GB2282089B (en) * | 1993-08-19 | 1996-08-28 | Junichi Nakazawa | Electronic lead elements and the production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE8189T1 (en) | 1984-07-15 |
| EP0034405A2 (en) | 1981-08-26 |
| DE3164349D1 (en) | 1984-08-02 |
| EP0034405B1 (en) | 1984-06-27 |
| GB2069377B (en) | 1983-02-02 |
| EP0034405A3 (en) | 1981-11-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |