CA1112735A - Electrical terminal - Google Patents
Electrical terminalInfo
- Publication number
- CA1112735A CA1112735A CA341,444A CA341444A CA1112735A CA 1112735 A CA1112735 A CA 1112735A CA 341444 A CA341444 A CA 341444A CA 1112735 A CA1112735 A CA 1112735A
- Authority
- CA
- Canada
- Prior art keywords
- arms
- hole
- section
- terminal
- cross
- 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.)
- Expired
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
- 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
- H01R4/5008—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using rotatable cam
-
- 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
- H01R4/58—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 characterised by the form or material of the contacting members
- H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
Abstract
ABSTRACT
An electrical terminal for terminating a stranded aluminium conductor comprises two relatively rotatable parts, one of which serves as a compression member operative to reduce the cross-sectional area of a passage in the other, in which passage the conductor is received.
An electrical terminal for terminating a stranded aluminium conductor comprises two relatively rotatable parts, one of which serves as a compression member operative to reduce the cross-sectional area of a passage in the other, in which passage the conductor is received.
Description
This invention relates to an electrical terminal, and particular-ly to an electrical terminal for terminating a multi-strand aluminium con-ductor as used in electricity supply systems.
According to this invention, a.n electrical terminal comprises a body member of electrically conductive material having a base and a pair of parallel spaced arms extending in the same direction from the base, inner surfaces of the arms defining a circular cross-section passage between them, and the arms defining an oval cross-section with their outer surfaces, the arms being spaced from each other in the direction of the major axis o:E
the oval cross-section defined by the outer surfaces of the arms; and a compression member of electrically conductive material having an oval cross-section hole therein, through which hole the arms of the body member are received, the compression member being rotatable relative to the arms about the longitudinal axis of the passage defined by the arms, from a first po-sition in which the major axis of the hole coincides with the major axis of the oval cross-section defined by the outer surfaces of the arms, and the arms are relatively spaced, to a second position in which the major axis of the hole coincides with the minor axis of the oval cross-section defined by the outer surfaces of the arms, and the arms are urged towards each other :
20 by engagement of the arms with the wall of the hole, thereby to reduce the ; cross-sectional area of the passage defined by the arms.
For use of the terminal of this invention, with the compression member in the first position on the arms of the body member, a multi-strand . ~ aluminium conductor, or another conductor, of substantially the same diam-eter as the passage defined by the arms, is inserted into the passage, and the compression member is then rotated relative to the arms to the second ; position. During such rotation of the compression member, the arms are urged towards each other~ the cross-sectional area of the passage being . ~ .
.~ ~
:., . :: . . : .
, , ~ :
reduced, and the arms being urged into intimate contact with the conductor in the passage. The conductor is -thereby deformed and a good electrica~
connection is established between the terminal and the conductor. Further, frictional forces act be-tween the conductor and the compression member dur-ing rotation thereof, which forces break up an~ undesirable, for example oxide, films on the conductor.
An electrical terminal according to this invention will now be de-scribed by way of example with reference to the drawings, in which:
Figure 1 is a plan view of a body member of the terminal;
Figure 2 is a longitudinal section through the body member of Fig-ure l;
Figure 3 is a view in the direction of the arrow III in Figure l;
Figure 4 is a longitudinal section through a compression member of the terminal;
Figure 5 is a view in the direction of the arrow V in Figure ~;
Figure 6 is a view in the direction of the arrow VI in Figure 4;
Figure 7 is a longitudinal section through the compression member of Figure 4 at right-angles to the section of Figure ~;
Figure 8 is a plan view of the assembled terminal; and Figure 9 is a longitudinal section throogh the terminal of Fig-ure 8.
The body member 1 shown in Figures 1 to 3, is an aluminium cast-ing, and comprises a base 2 having a pair of parallel spaced arms 3 extend-ing in the same direction from one surface of the base 2. The inner sur-faces of the arms 3 are provided with longitudinally extending serrations ~, and are concave and define between them a circular cross-section passage 5 having an outwardly flared mouth 5a. The outer surfaces 6 o-~ the arms 3 have first portions 6a adjacent their free ends, which together define an , - . . . - - . . . . . .
~ . - . :.. - ..... :: :.: ...... :: . - , .
:. . .. .. . : .. . . . : : . -Z7~5;
oval cross-section (best seen in Figure 3), and second inner portions 6b which together define a circular cross-section, the arms 3 being spaced from each other in the direction of the major axis of the oval cross-section.
Extending from the opposite surface of the base 2 to the arms 3 is a rectangular coupling plate 8 having a hole 9 therein whereby the terminal can be connected to electrical equipment by means of a bolt passing through the hole 9.
The compression member 10 shown in Pigures ~ to 7 is of steel, and has a hexagonal outside cross-section for engagement by a spanner over part 10a of its length, and a circular outside cross-section over the remainder 10b of its length. Within the hexagonal cross-section portion 10a of the compression member 10 is an oval cross-section hole 11, while the remainder 10b has an axially aligned circular cross-section hole 12 therein. On the end ~right-hand end in Figure ~) adjacent the circular cross-section hole 12, the compression member 10 has a part-annular projection 13 extending over 90 of arc including one end of each of the major and minor axes of the oval hole 11. This projection 13 is, in the assembled state of the ter-minal, received in a 180 recess 1~ (Figures 1 and 9) formed in the base 2 of the body member 1.
Referring now to Figures 8 and 9, in the assembled state of the terminal the arms 3 of the body member I are received in the holes 11 and 12 in the compression member 10, with the hole 11 adjacent the free ends of the arms 3.
When the major axis of the oval hole 11 in the compression member 10 is aligned with the major axis of the underlying oval cross-section por-; tion 6a defined by the outer surfaces 6 of the arms 3, the arms 3 are spaced apart as shown in Figures 2, 3 and 9. With the compression member 10 in this first position relative to the body member 1, a multi-strand conductor ., :
, : ~ .. ' , . :' ' '' ' ~ : - ,;, ~, . : . :
... .
73~ii (not shown) having a cross-sectional area substantially equal to that oE the then circular cross-section passage 5 between the arms 3, can be inserted into the passage 5, the flared mouth 5a facilitating such insertion.
The compression member 10 is then rotated about the arms 3 by means of a spanner engaged with the hexagonal portion lOa until the major axis of the oval hole 11 in the compression member 10 has turned through 90, this rotation being limited by engagement of an end of the projection 13 with an end of the recess 1~ in the body member 1. During such rotation, the arms 3 are urged towards each other by engagement of the outer surfaces 6 of the arms 3 with the surface of the oval hole 11, and the original major axis of the oval cross-section portion 6a defined by the outer surfaces 6 of the arms 3 is shortened to substantially the length of the minor axis of this oval cross-section.
The serrations ~ on the arms 3 are thus urged into intimate en-gagement with the conductor in the passage 5, and the conductor is deformed out of its original circular cross-section as the cross-sectional area of the passage 5 is reduced.
A good electrical and mechanical connection is thereby established between the terminal and the conductor~ and the terminal can be used to con-nect the conductor to electrical equipment by means of a bolt ~not shown)passing through the hole 9 in the plate 8 of the terminal.
:
According to this invention, a.n electrical terminal comprises a body member of electrically conductive material having a base and a pair of parallel spaced arms extending in the same direction from the base, inner surfaces of the arms defining a circular cross-section passage between them, and the arms defining an oval cross-section with their outer surfaces, the arms being spaced from each other in the direction of the major axis o:E
the oval cross-section defined by the outer surfaces of the arms; and a compression member of electrically conductive material having an oval cross-section hole therein, through which hole the arms of the body member are received, the compression member being rotatable relative to the arms about the longitudinal axis of the passage defined by the arms, from a first po-sition in which the major axis of the hole coincides with the major axis of the oval cross-section defined by the outer surfaces of the arms, and the arms are relatively spaced, to a second position in which the major axis of the hole coincides with the minor axis of the oval cross-section defined by the outer surfaces of the arms, and the arms are urged towards each other :
20 by engagement of the arms with the wall of the hole, thereby to reduce the ; cross-sectional area of the passage defined by the arms.
For use of the terminal of this invention, with the compression member in the first position on the arms of the body member, a multi-strand . ~ aluminium conductor, or another conductor, of substantially the same diam-eter as the passage defined by the arms, is inserted into the passage, and the compression member is then rotated relative to the arms to the second ; position. During such rotation of the compression member, the arms are urged towards each other~ the cross-sectional area of the passage being . ~ .
.~ ~
:., . :: . . : .
, , ~ :
reduced, and the arms being urged into intimate contact with the conductor in the passage. The conductor is -thereby deformed and a good electrica~
connection is established between the terminal and the conductor. Further, frictional forces act be-tween the conductor and the compression member dur-ing rotation thereof, which forces break up an~ undesirable, for example oxide, films on the conductor.
An electrical terminal according to this invention will now be de-scribed by way of example with reference to the drawings, in which:
Figure 1 is a plan view of a body member of the terminal;
Figure 2 is a longitudinal section through the body member of Fig-ure l;
Figure 3 is a view in the direction of the arrow III in Figure l;
Figure 4 is a longitudinal section through a compression member of the terminal;
Figure 5 is a view in the direction of the arrow V in Figure ~;
Figure 6 is a view in the direction of the arrow VI in Figure 4;
Figure 7 is a longitudinal section through the compression member of Figure 4 at right-angles to the section of Figure ~;
Figure 8 is a plan view of the assembled terminal; and Figure 9 is a longitudinal section throogh the terminal of Fig-ure 8.
The body member 1 shown in Figures 1 to 3, is an aluminium cast-ing, and comprises a base 2 having a pair of parallel spaced arms 3 extend-ing in the same direction from one surface of the base 2. The inner sur-faces of the arms 3 are provided with longitudinally extending serrations ~, and are concave and define between them a circular cross-section passage 5 having an outwardly flared mouth 5a. The outer surfaces 6 o-~ the arms 3 have first portions 6a adjacent their free ends, which together define an , - . . . - - . . . . . .
~ . - . :.. - ..... :: :.: ...... :: . - , .
:. . .. .. . : .. . . . : : . -Z7~5;
oval cross-section (best seen in Figure 3), and second inner portions 6b which together define a circular cross-section, the arms 3 being spaced from each other in the direction of the major axis of the oval cross-section.
Extending from the opposite surface of the base 2 to the arms 3 is a rectangular coupling plate 8 having a hole 9 therein whereby the terminal can be connected to electrical equipment by means of a bolt passing through the hole 9.
The compression member 10 shown in Pigures ~ to 7 is of steel, and has a hexagonal outside cross-section for engagement by a spanner over part 10a of its length, and a circular outside cross-section over the remainder 10b of its length. Within the hexagonal cross-section portion 10a of the compression member 10 is an oval cross-section hole 11, while the remainder 10b has an axially aligned circular cross-section hole 12 therein. On the end ~right-hand end in Figure ~) adjacent the circular cross-section hole 12, the compression member 10 has a part-annular projection 13 extending over 90 of arc including one end of each of the major and minor axes of the oval hole 11. This projection 13 is, in the assembled state of the ter-minal, received in a 180 recess 1~ (Figures 1 and 9) formed in the base 2 of the body member 1.
Referring now to Figures 8 and 9, in the assembled state of the terminal the arms 3 of the body member I are received in the holes 11 and 12 in the compression member 10, with the hole 11 adjacent the free ends of the arms 3.
When the major axis of the oval hole 11 in the compression member 10 is aligned with the major axis of the underlying oval cross-section por-; tion 6a defined by the outer surfaces 6 of the arms 3, the arms 3 are spaced apart as shown in Figures 2, 3 and 9. With the compression member 10 in this first position relative to the body member 1, a multi-strand conductor ., :
, : ~ .. ' , . :' ' '' ' ~ : - ,;, ~, . : . :
... .
73~ii (not shown) having a cross-sectional area substantially equal to that oE the then circular cross-section passage 5 between the arms 3, can be inserted into the passage 5, the flared mouth 5a facilitating such insertion.
The compression member 10 is then rotated about the arms 3 by means of a spanner engaged with the hexagonal portion lOa until the major axis of the oval hole 11 in the compression member 10 has turned through 90, this rotation being limited by engagement of an end of the projection 13 with an end of the recess 1~ in the body member 1. During such rotation, the arms 3 are urged towards each other by engagement of the outer surfaces 6 of the arms 3 with the surface of the oval hole 11, and the original major axis of the oval cross-section portion 6a defined by the outer surfaces 6 of the arms 3 is shortened to substantially the length of the minor axis of this oval cross-section.
The serrations ~ on the arms 3 are thus urged into intimate en-gagement with the conductor in the passage 5, and the conductor is deformed out of its original circular cross-section as the cross-sectional area of the passage 5 is reduced.
A good electrical and mechanical connection is thereby established between the terminal and the conductor~ and the terminal can be used to con-nect the conductor to electrical equipment by means of a bolt ~not shown)passing through the hole 9 in the plate 8 of the terminal.
:
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An electrical terminal comprising a body member of electrically conductive material having a base and a pair of parallel spaced arms extend-ing in the same direction from the base, inner surfaces of the arms defining a circular cross-section passage between them, and the arms defining an oval cross-section with their outer surfaces, the arms being spaced from each other in the direction of the major axis of the oval cross-section defined by the outer surfaces of the arms; and a compression member of electrically conductive material having an oval cross-section hole therein, through which hole the arms of the body member are received, the compression member being rotatable relative to the arms about the longitudinal axis of the passage defined by the arms, from a first position in which the major axis of hole coincides with the major axis of the oval cross-section defined by the outer surfaces of the arms, and the arms are relatively spaced, to a second posi-tion in which the major axis of the hole coincides with the minor axis of the oval cross-section defined by the outer surfaces of the arms, and the arms are urged towards each other by engagement of the arms with the wall of the hole, thereby to reduce the cross-sectional area of the passage de-fined by the arms.
2. A terminal as claimed in Claim 1, in which the compression mem-ber has a first portion containing the oval cross-section hole, and a second portion having an axially aligned circular cross-section hole therein through which the arms of the body member are received.
3. A terminal as claimed m Claim 2, in which the first portion of the compression member has a hexagonal outside cross-section.
4. A terminal as claimed in Claim 1, Claim 2 or Claim 3, in which one end of the compression member is fomed with a part-annular projection on the end face, which projection extends over 90° of arc including one end of each of the major and minor axes of the oval hole in the compression mem-ber, the projection being received in a 180° recess in -the body member thereby to limit rotation of the compression member relative to the arms of the body member.
5. A terminal as claimed in Claim 1, Claim 2 or Claim 3, in which the hole in the compression member is formed with longitudinally extending serrations.
6. A terminal as claimed in Claim 1, in which the body member in-cludes a coupling plate with a hole therein extending from a surface of the base opposite to a surface from which the arms extend.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB47530/78 | 1978-12-07 | ||
| GB7847530 | 1978-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1112735A true CA1112735A (en) | 1981-11-17 |
Family
ID=10501556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA341,444A Expired CA1112735A (en) | 1978-12-07 | 1979-12-07 | Electrical terminal |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS6026456Y2 (en) |
| AR (1) | AR219844A1 (en) |
| BR (1) | BR7907972A (en) |
| CA (1) | CA1112735A (en) |
| DE (1) | DE7933845U1 (en) |
| ES (1) | ES247232Y (en) |
| FR (1) | FR2443751A3 (en) |
| HK (1) | HK79386A (en) |
| IT (1) | IT7923208V0 (en) |
| MX (1) | MX146491A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2665043A1 (en) * | 1990-07-18 | 1992-01-24 | Bastiand Alexandre | Automated telephony distributor |
| JP6664434B2 (en) | 2018-05-25 | 2020-03-13 | 株式会社オートネットワーク技術研究所 | Terminal |
-
1979
- 1979-11-22 IT IT2320879U patent/IT7923208V0/en unknown
- 1979-11-30 DE DE19797933845 patent/DE7933845U1/en not_active Expired
- 1979-12-04 ES ES1979247232U patent/ES247232Y/en not_active Expired
- 1979-12-05 MX MX18033179A patent/MX146491A/en unknown
- 1979-12-06 BR BR7907972A patent/BR7907972A/en not_active IP Right Cessation
- 1979-12-06 FR FR7929993A patent/FR2443751A3/en active Granted
- 1979-12-06 JP JP16931179U patent/JPS6026456Y2/en not_active Expired
- 1979-12-07 CA CA341,444A patent/CA1112735A/en not_active Expired
- 1979-12-07 AR AR27920479A patent/AR219844A1/en active
-
1986
- 1986-10-23 HK HK79386A patent/HK79386A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2443751B3 (en) | 1980-12-12 |
| IT7923208V0 (en) | 1979-11-22 |
| ES247232Y (en) | 1980-10-01 |
| BR7907972A (en) | 1980-07-22 |
| JPS5585770U (en) | 1980-06-13 |
| FR2443751A3 (en) | 1980-07-04 |
| DE7933845U1 (en) | 1980-04-17 |
| HK79386A (en) | 1986-10-31 |
| JPS6026456Y2 (en) | 1985-08-09 |
| ES247232U (en) | 1980-03-16 |
| AR219844A1 (en) | 1980-09-15 |
| MX146491A (en) | 1982-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |