EP0018800A1 - Manufacture of tapered bodies and electric connector receptacles made thereby - Google Patents
Manufacture of tapered bodies and electric connector receptacles made thereby Download PDFInfo
- Publication number
- EP0018800A1 EP0018800A1 EP19800301365 EP80301365A EP0018800A1 EP 0018800 A1 EP0018800 A1 EP 0018800A1 EP 19800301365 EP19800301365 EP 19800301365 EP 80301365 A EP80301365 A EP 80301365A EP 0018800 A1 EP0018800 A1 EP 0018800A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- blank
- area
- press tools
- length
- 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
Images
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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
- H01R4/5083—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a wedge
Definitions
- This invention relates to the manufacture of tapered bodies of ductile material comprising two parts each of uniform cross-section extending along opposite sides of and united by at least one web that is wider at one of its ends than the other.
- An important application of the invention is in making receptacles for electric tapping connectors in which the parts of uniform cross-section are channels facing inwardly to receive separate electric conductors that are secured and electrically connected by a wedge driven between them.
- Such bodies can.be made by casting, but for many purposes the mechanical properties of metal (or other ductile material) that has been worked are much superior to cast material. Machining would be prohibitively expensive, and the current technique of bending an initially flat blank to form the parts of uniform cross-section restricts the cross-sectional shapes it is practicable to use (and is applicable only to shapes with a single web).
- a blank comprising two parts of uniform cross-section extending along opposite sides of and united by at least one web of uniform width is first extruded; and then the web or each of the webs is formed between press tools acting on it to an extent that varies and/or over an area that tapers along the length of the blank so as to increase its width to an extent that varies along the length of the blank.
- the web of the extruded blank is planar and in this case the press tools will reduce its thickness to an extent that varies and/or over an area that tapers along the length of the blank.
- the press tools could reduce the curvature of the web to an extent that varies and/or over an area that tapers along the length of the blank; and it will be understood that when the area tapers the curvature can be completely removed over that area.
- a plurality of blanks may be extruded in a continuous length and subsequently sheared or sawn from one another.
- the area of reduced thickness or reduced curvature (or each of the areas if there is more than one) is defined by a raised area on one of the press tools (or corresponding raised areas on both of them), which will ordinarily be approximately triangular with its base at the wider end of the finished body.
- the raised area is preferably flat or inclined, and preferably the edges of the.raised area are oblique.
- the product is an electric connector receptacle into which a co-operating wedge will enter to secure conductors
- it is preferably also formed in the pressing operation with ribs or other formations for engaging a projection on the wedge to increase resistance to slackening of the wedge.
- the invention is especially applicable to articles of heat-treatable aluminium alloys, which are extruded in nominally half-hard condition, cooled slowly (e.g. in still air) to avoid age-hardening, and heat-treated to the TF condition after forming. It can however be used effectively with other ductile materials, such as for example copper, aluminium bronze and other copper alloys; in some cases the blank could incorporate more than one material.
- standard heat-treatable aluminium alloy HE30 is first extruded to the cross-section shown in figure 1 and comprising two channel portions 1, 2 of any desired cross-section and a planar connecting web 3.
- the channel portions can usefully be formed with splines 4 or grooves and this is advantageous for some electrical connector receptacles.
- the extrudate is cooled in still air and then cut into individual blanks.
- Each blank is then positioned in turn, open side down, on a tool of the form shown in figure 2, with the web 3 on top of the tool, the flanges 5,5 loosely received in channels 6,6 in the tool, and an end of the blank against a stop surface 7 on the tool.
- the blank is now pressed onto the tool using a flat co-operating tool (not shown in the drawings) to reduce its thickness over the area 8 (figures 5-7). Both the width of the reduced area and the extent of reduction increase steadily from the line 9 to the line 10.
- the effect of the deformation is to introduce a taper of about eight degrees between the two channels.
- the tool is formed with grooves 11, as shown in figure 2, to form ribs 12 of sawtooth or other suitable profile extending transversely across the area 8 for reasons explained below.
- the now-tapered receptacle After forming the now-tapered receptacle is put through the standard heat-treatment to convert it to the TF condition, namely solution treating at 520-530 C followed by quenching in cold water and precipitation heat-treatment at 180 0 C for 5-6 hours.
- exposed sharp edges and especially the edges 13 that will engage the conductors in use are desirably chamfered.
- the co-operating wedge shown in figures 8-12, is die-cast and has concave wedge faces 14 comprising a main section 15 (figure 10) with a taper angle substantially the same as the taper angle of the receptacle merging into a lead-in section 16 with a slightly larger taper angle. All corners 17 adjoining the wedge faces are generously radiussed.
- the side faces 18 of the wedge are slightly convex and each bears at the wider end a ribbed projection 19, so that whichever way up the wedge is inserted in the receptacle, the ribs 12 will be engaged by one of the projections 19.
- the ribs of projection 19 correspond in spacing and broadly in shape to the recesses between the ribs 12, but the ribs of 19 are of uniform height. When the wedge is driven home, the ribs interlock to increase resistance to slackening of the wedge.
- the modified receptacles shown in figure 13 differs in the shape of the area 8; other, similar, variations may be made.
- Figures 14 and 15 illustrate the use of an extruded blank with a curved web; the blanks are of the shape shown in dotted lines and are the same in both cases.
- the-press tools act on the triangular area 20 and reduce it to a planar (but oblique) shape, while the areas 21 remain curved substantially as extruded.
- two triangular areas 22 are flattened until they are each coplanar with the contiguous side of the channels 1, 2 respectively and a central triangular area 23 remains curved (though displaced from its original position, except at the extremity of its wide end).
Abstract
Description
- This invention relates to the manufacture of tapered bodies of ductile material comprising two parts each of uniform cross-section extending along opposite sides of and united by at least one web that is wider at one of its ends than the other.
- An important application of the invention is in making receptacles for electric tapping connectors in which the parts of uniform cross-section are channels facing inwardly to receive separate electric conductors that are secured and electrically connected by a wedge driven between them.
- Such bodies can.be made by casting, but for many purposes the mechanical properties of metal (or other ductile material) that has been worked are much superior to cast material. Machining would be prohibitively expensive, and the current technique of bending an initially flat blank to form the parts of uniform cross-section restricts the cross-sectional shapes it is practicable to use (and is applicable only to shapes with a single web).
- In the method of the invention, a blank comprising two parts of uniform cross-section extending along opposite sides of and united by at least one web of uniform width is first extruded; and then the web or each of the webs is formed between press tools acting on it to an extent that varies and/or over an area that tapers along the length of the blank so as to increase its width to an extent that varies along the length of the blank.
- Preferably the web of the extruded blank is planar and in this case the press tools will reduce its thickness to an extent that varies and/or over an area that tapers along the length of the blank.
- If however the extruded blank were formed with'a curved web, it would be possible, as an alternative (or a supplement) to reducing its thickness, for the press tools to reduce the curvature of the web to an extent that varies and/or over an area that tapers along the length of the blank; and it will be understood that when the area tapers the curvature can be completely removed over that area.
- It will be apparent that a plurality of blanks may be extruded in a continuous length and subsequently sheared or sawn from one another.
- Preferably the area of reduced thickness or reduced curvature (or each of the areas if there is more than one) is defined by a raised area on one of the press tools (or corresponding raised areas on both of them), which will ordinarily be approximately triangular with its base at the wider end of the finished body. When the thickness is to be reduced, the raised area is preferably flat or inclined, and preferably the edges of the.raised area are oblique.
- When the product is an electric connector receptacle into which a co-operating wedge will enter to secure conductors, it is preferably also formed in the pressing operation with ribs or other formations for engaging a projection on the wedge to increase resistance to slackening of the wedge.
- The invention is especially applicable to articles of heat-treatable aluminium alloys, which are extruded in nominally half-hard condition, cooled slowly (e.g. in still air) to avoid age-hardening, and heat-treated to the TF condition after forming. It can however be used effectively with other ductile materials, such as for example copper, aluminium bronze and other copper alloys; in some cases the blank could incorporate more than one material.
- The invention will be further described, by way of example, with reference to the drawings in which:
- Figure 1 is an enlarged end-view of an extruded blank;
- Figure 2 is a perspective view of a press tool;
- Figures 3 and 4 are an end view and a front view of a finished connector receptacle;
- Figure 5 is a cross-section in the line V-V in figure 3; and
- Figures 6 and 7 are cross-sections on the lines VI-VI and VII-VII respectively in figure 5;
- Figure 8, 9 and 10 are mutually perpendicular views of a wedge for use with the receptacle of figures 3-7;
- Figure 11 is a cross-section on the line XI-XI in figure 8;
- Figure 12 is an enlarged cross-section on the line XII-XII in figure 10;
- Figure 13 is a view, corresponding to figure 5, of a modified design of receptacle; and
- Figures 14 and 15 are isometric sketches of two further designs of receptacle.
- In the manufacture of the receptacle of figures 2 to 7, standard heat-treatable aluminium alloy HE30 is first extruded to the cross-section shown in figure 1 and comprising two
channel portions 1, 2 of any desired cross-section and a planar connectingweb 3. The channel portions can usefully be formed withsplines 4 or grooves and this is advantageous for some electrical connector receptacles. The extrudate is cooled in still air and then cut into individual blanks. - Each blank is then positioned in turn, open side down, on a tool of the form shown in figure 2, with the
web 3 on top of the tool, the flanges 5,5 loosely received inchannels line 9 to theline 10. The effect of the deformation is to introduce a taper of about eight degrees between the two channels. - Preferably the tool is formed with
grooves 11, as shown in figure 2, to formribs 12 of sawtooth or other suitable profile extending transversely across thearea 8 for reasons explained below. - After forming the now-tapered receptacle is put through the standard heat-treatment to convert it to the TF condition, namely solution treating at 520-530 C followed by quenching in cold water and precipitation heat-treatment at 1800C for 5-6 hours.
- At any convenient stage of the manufacturing process, exposed sharp edges and especially the
edges 13 that will engage the conductors in use are desirably chamfered. - The co-operating wedge, shown in figures 8-12, is die-cast and has
concave wedge faces 14 comprising a main section 15 (figure 10) with a taper angle substantially the same as the taper angle of the receptacle merging into a lead-insection 16 with a slightly larger taper angle. Allcorners 17 adjoining the wedge faces are generously radiussed. - The side faces 18 of the wedge are slightly convex and each bears at the wider end a ribbed
projection 19, so that whichever way up the wedge is inserted in the receptacle, theribs 12 will be engaged by one of theprojections 19. In the preferred design shown, the ribs ofprojection 19 correspond in spacing and broadly in shape to the recesses between theribs 12, but the ribs of 19 are of uniform height. When the wedge is driven home, the ribs interlock to increase resistance to slackening of the wedge. - The modified receptacles shown in figure 13 differs in the shape of the
area 8; other, similar, variations may be made. - Figures 14 and 15 illustrate the use of an extruded blank with a curved web; the blanks are of the shape shown in dotted lines and are the same in both cases. In the receptacle of figure 14, the-press tools act on the
triangular area 20 and reduce it to a planar (but oblique) shape, while theareas 21 remain curved substantially as extruded. In that of figure 15, twotriangular areas 22 are flattened until they are each coplanar with the contiguous side of thechannels 1, 2 respectively and a centraltriangular area 23 remains curved (though displaced from its original position, except at the extremity of its wide end).
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80301365T ATE1482T1 (en) | 1979-04-26 | 1980-04-25 | MANUFACTURE OF CONICAL BODY AND ELECTRICAL CONNECTOR SLEEVES MANUFACTURED IN THIS WAY. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7914543 | 1979-04-26 | ||
GB7914543 | 1979-04-26 | ||
GB7919682 | 1979-06-06 | ||
GB7919682 | 1979-06-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0018800A1 true EP0018800A1 (en) | 1980-11-12 |
EP0018800B1 EP0018800B1 (en) | 1982-08-25 |
Family
ID=26271334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19800301365 Expired EP0018800B1 (en) | 1979-04-26 | 1980-04-25 | Manufacture of tapered bodies and electric connector receptacles made thereby |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0018800B1 (en) |
DE (1) | DE3060774D1 (en) |
FI (1) | FI84792C (en) |
IE (1) | IE49589B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970013526A (en) * | 1995-08-23 | 1997-03-29 | 원본미기재 | Electric wedge connector with retaining bar |
US5674097A (en) * | 1995-09-15 | 1997-10-07 | The Whitaker Corporation | Electrical connector with wedge |
CN112332117A (en) * | 2020-09-25 | 2021-02-05 | 国网浙江慈溪市供电有限公司 | Wedge-shaped wire clamp |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109514206A (en) * | 2018-12-27 | 2019-03-26 | 永固集团股份有限公司 | The manufacturing method of wedge type clamp shell and profile for manufacturing wedge type clamp shell |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2641810A (en) * | 1949-03-14 | 1953-06-16 | American Hoist & Derrick Co | Plural cable clamp |
GB944544A (en) * | 1962-06-05 | 1963-12-18 | Amp Inc | Electrical terminal connector |
DE1465160A1 (en) * | 1964-04-09 | 1969-04-30 | Amp Inc | Arrangement consisting of an electrical connection block and a jack |
-
1980
- 1980-04-25 FI FI801347A patent/FI84792C/en not_active IP Right Cessation
- 1980-04-25 EP EP19800301365 patent/EP0018800B1/en not_active Expired
- 1980-04-25 DE DE8080301365T patent/DE3060774D1/en not_active Expired
- 1980-04-25 IE IE85480A patent/IE49589B1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2641810A (en) * | 1949-03-14 | 1953-06-16 | American Hoist & Derrick Co | Plural cable clamp |
GB944544A (en) * | 1962-06-05 | 1963-12-18 | Amp Inc | Electrical terminal connector |
DE1465160A1 (en) * | 1964-04-09 | 1969-04-30 | Amp Inc | Arrangement consisting of an electrical connection block and a jack |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970013526A (en) * | 1995-08-23 | 1997-03-29 | 원본미기재 | Electric wedge connector with retaining bar |
US5674097A (en) * | 1995-09-15 | 1997-10-07 | The Whitaker Corporation | Electrical connector with wedge |
CN112332117A (en) * | 2020-09-25 | 2021-02-05 | 国网浙江慈溪市供电有限公司 | Wedge-shaped wire clamp |
CN112332117B (en) * | 2020-09-25 | 2022-05-17 | 国网浙江慈溪市供电有限公司 | Wedge-shaped wire clamp |
Also Published As
Publication number | Publication date |
---|---|
FI84792C (en) | 1992-01-27 |
EP0018800B1 (en) | 1982-08-25 |
IE49589B1 (en) | 1985-10-30 |
FI801347A (en) | 1980-10-27 |
IE800854L (en) | 1980-10-26 |
DE3060774D1 (en) | 1982-10-21 |
FI84792B (en) | 1991-10-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2424044A1 (en) | Terminal fitting and terminal fitting-equipped electric cable | |
US5774987A (en) | Electrical wedge connector | |
US9015937B2 (en) | Method of forming a crimping terminal fitting | |
DE112012003097B4 (en) | Electrical wire with connection and manufacturing process therefor | |
US8303355B2 (en) | Terminal connector and electric wire with terminal connector | |
DE102005016236A1 (en) | Drahtendbereich-press attachment structure | |
CN109672038B (en) | Curved electrical contact element with chamfered edge and method for producing same | |
EP3827480A1 (en) | Electric connection and method for producing an electric connection | |
EP0607902A2 (en) | Linked electrical connectors | |
EP0018800B1 (en) | Manufacture of tapered bodies and electric connector receptacles made thereby | |
EP3595089B1 (en) | Electrical terminals having bi-directional serrations | |
US6431903B1 (en) | Insulation displacement contact for use with fine wires | |
EP0649186B1 (en) | Conductor crimping electrical terminal | |
US3638173A (en) | Electrical connecting lug | |
JP2611901B2 (en) | Wedge connector | |
DE2357101C2 (en) | Electrical contact element | |
US4938713A (en) | Electrical terminal for wave crimp termination of flat power cable | |
US5423120A (en) | Process for making press-in connection type contact | |
US4626126A (en) | Connector member | |
JP4467099B2 (en) | Electrical connector terminals | |
US5768766A (en) | Press-connecting tool | |
CN1193417A (en) | Improved electrical connector | |
EP0068697A1 (en) | Method of manufacturing an electrical contact | |
DE10157240B4 (en) | Heat sink and method for producing the same | |
CN211699750U (en) | Inlaid composite metal structure plate strip and stamping part thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
17P | Request for examination filed |
Effective date: 19801104 |
|
ITF | It: translation for a ep patent filed |
Owner name: SOCIETA' ITALIANA BREVETTI S.P.A. |
|
TCAT | At: translation of patent claims filed | ||
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
REF | Corresponds to: |
Ref document number: 1482 Country of ref document: AT Date of ref document: 19820915 Kind code of ref document: T Ref document number: 1482 Country of ref document: AT Date of ref document: 19820825 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 1482 Country of ref document: AT Date of ref document: 19820915 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3060774 Country of ref document: DE Date of ref document: 19821021 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: BURNDY CORPORATION Owner name: BICC PUBLIC LIMITED COMPANY |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19910313 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19910320 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 19910403 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19910430 Year of fee payment: 12 |
|
EPTA | Lu: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19920325 Year of fee payment: 13 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19920425 Ref country code: AT Effective date: 19920425 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19920430 Ref country code: CH Effective date: 19920430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19921101 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
ITTA | It: last paid annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19930430 |
|
BERE | Be: lapsed |
Owner name: BURNDY CORP. Effective date: 19930430 Owner name: BICC LTD Effective date: 19930430 |
|
EAL | Se: european patent in force in sweden |
Ref document number: 80301365.5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19980312 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19980319 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19980320 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19980325 Year of fee payment: 19 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990425 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990426 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19990425 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991231 |
|
EUG | Se: european patent has lapsed |
Ref document number: 80301365.5 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000201 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |