GB1586507A - Terminal for two conductors - Google Patents

Terminal for two conductors Download PDF

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Publication number
GB1586507A
GB1586507A GB4780877A GB4780877A GB1586507A GB 1586507 A GB1586507 A GB 1586507A GB 4780877 A GB4780877 A GB 4780877A GB 4780877 A GB4780877 A GB 4780877A GB 1586507 A GB1586507 A GB 1586507A
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GB
United Kingdom
Prior art keywords
slot
wire
edges
terminal
sections
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
Application number
GB4780877A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Corp
Original Assignee
AMP Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AMP Inc filed Critical AMP Inc
Priority to GB4780877A priority Critical patent/GB1586507A/en
Publication of GB1586507A publication Critical patent/GB1586507A/en
Expired legal-status Critical Current

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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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H01R4/2462—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the contact members being in a slotted bent configuration, e.g. slotted bight

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Description

(54) TERMINAL FOR TWO CONDUCTORS (71) We, AMP INCORPORATED, a corporation organised and existing under the laws of the State of New Jersey, United States of America, of Eisenhower Boulevard, Harrisburg, Pennsylvania, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The invention relates to terminals for electrical connection to two conductors such as wires.
According to the invention, there is provided a terminal comprising first and second metal plates located adjacent in opposed parallel relation and arranged for limited relative lateral movement in their planes and having, respectively, first and second slots extending from mouths at least part in registration with each other, the slots each comprising first and second wire receiving sections longitudinally spaced from the mouths, the walls of the first slot in the first wire receiving section being offset in a first lateral direction from the walls of the second slot in the first wire receiving section and the walls of the first slot in the second wire receiving section being offset in a second lateral direction from the walls of the second slot in the second wire receiving section, the second direction being opposite to the first direction, such that a conductor inserted into the first wire receiving section will be gripped between a first wall of the first slot and a second, opposite wall of the second slot and a conductor inserted into the second wire receiving sections will be gripped between a second wall of the first slot and a first, opposite wall of the second slot.
Specific examples of the invention will now be described with reference to the accompanying drawings in which: Figure 1 is a perspective view of a wire connecting portion of a first example of terminal according to the invention; Figure 2 is a front view of the wire connecting portion of the terminal of Figure 1; Figures 3 to 5 are schematic front views of the wire connecting portion of the terminal of Figure 1 at various stages of wire insertion; Figures 6 and 7 are fragmentary perspective views of a first and second connector including terminals having wire connecting portions similar to the terminal of Figure 1; Figure 8 is a perspective view of a wire connecting portion of a second example of terminal according to the invention; Figure 9 is a perspective view of a wire connecting portion of a third example of terminal according to the invention; Figure 10 is a perspective view showing a fourth example of a terminal according to the invention; Figure 11 is a perspective view of a fifth example of terminal according to the invention; Figure 12 is a perspective view of a sixth example of terminal according to the invention; Figures 13 and 14 are fragmentary views showing modifications to terminal slot walls; Figure 15 is a front view of the wire connecting portion of a seventh example of terminal according to the invention; Figure 16 is a front view of the wireconnecting portion shown in Figure 15 with a wire inserted into a transition region; Figure 17 is an enlarged front view of the wire-connecting portion of Figure 16; Figure 18 is a fragmentary perspective view of a wire-connecting portion of a eighth example of terminal; and Figure 19 is a schematic view of a ninth example of terminal according to the invention.
The first example of terminal 11 is stamped and formed from a single piece of sheet metal and comprises first and second metal plates 12 and 13 respectively joined together at one end by a bight 14 to extend adjacent in opposed, parallel relation. The plates have first and second slots 15 and 16, respectively, extending from the other end and the second plate is joined at the other end by a pair of straps 18 to a third plate 19 having a third slot 20 aligned with the first and second slots. The plate 19 extends from one end of a body porlion 21 joined at its other end to a contact portion (not shown) and provided with a latching tongue 22 to latch the terminal in a housing.
The first and second slots extend in the same direction in partial registration from adjacent mouths and comprise first and second wire-receiving sections 23, 24 and 25, 26 successively longitudinally spaced from the mouths, first and second walls 27 and 28 of the first slot 15 being respectively offset in a first lateral direction from first and second walls 29 and 30 of the second slot 16 in the first sections 23, 24 and first and second walls of the first slot being respectively offset from first and second walls of the second slot in a second lateral direction, opposite to the first lateral direction in the second sections 25, 26.
The first and second sections are joined by transition regions disclosed in more detail in Figures 15 to 17 below.
In use, a first insulated wire is inserted perpendicularly of its axis through the mouths and the first slot sections into the second slot sections. During its passage through the first slot sections, (Figure 3), the wire is gripped between the first wall 27 of the first slot and the second, opposite wall 30 of the second slot with penetration of the insulation and relative lateral pivotal movement of the first and second plates in their planes in one direction. Movement of the first wire through the transition region into the second slot sections (Figure 4), causes relative pivotal movement of the plates in the opposite direction and the wire is gripped between the second wall 28 of the first slot and the first, opposite wall 29 of the second slot. Subsequent insertion of a second similar, wire into the first slot sections, (Figure 5), causes relative pivotal movement of the plates into alignment by engagement of the second wire and the first wall 27 of the second slot and the second wall 30 of the second slot, increasing the gripping force on the first wire.
Thus, an increasing gripping force is applied to the wire core during progression from Figure 3 to Figure 5, caused particularly by the insertion of the second wire into the first slot section. The presence of the first wire in the second slot sections also increases the gripping force on the second wire core in the first slot sections. Thus, the gripping force on a wire core is greater where two wires are present in the respective slot sections than where only one wire is present. The bight 14 maintains the gripping force.
The third slot may grip the wires to provide strain relief. If desired, the separation of the first wall 27 of the first slot and the second wall 30 of the second slot may be greater than the separation of the second wall 28 of the first slot and the first opposite wall of the second slot in the second slot section.
The -connector of Figure 6 comprises an insulating housing 40 mounted in an aperture in a panel 41 and in which are mounted two rows of opposed terminals 11. Each terminal has a bowed spring contact portion 42 extending from the body 21 and provided within ears 43 at its free end which latch behind shoulders 44 of the housing to retain the terminals in the housing with the contact portions 42 bowed towards each other in preloaded condition to grip between them a printed circuit board or terminal posts.
In the connector of Figure 7, the terminals 11 are modified principally in that the body portions 46 extend perpendicularly to the slotted plates so that the wires can be inserted into the slots in a direction parallel to the panel 41 rather than from a direction perpendicularly to the panel.
In the second example of terminal 50 shown in Figure 8 the slot mouths 51 open into a bight 52 integrally joining first and second plates 53 and 54. As a result of the split, bight, the wire connection portion of terminal can be made by a single stamping step whereas the first example of terminal requires two stamping steps as the first and second slots are separated by the material forming the bight 14.
The wire connecting portion of the third example of terminal 60 shown in Figure 9 differs from the first example in that three slot sections 61, 62 and 63 respectively -ire provided The first and third slot sections are aligned with each other but laterally offset from the second slot section 62 in a similar fashion to the first example. The separation of the co-operating walls of the sections may be different from section to section if desired.
The wire connecting portions of the fourth example 67 shown in Figure 10 is provided with a post 69 which is anchored in a plastics substrate 70.
In the fifth example 71 shown in Figure 11, first and second slotted plates 72 and 73 are integrally joined along one edge by a bight 74 parallel to the slots which are similarly shaped and arranged to the slots of the first example.
Terminal posts 75 and 76 extend from adjacent sides of the second plates. Alternatively crimping ferrules or other connecting portions may be provided instead of the post.
In the sixth example 77 shown in Figure 12, two wire connecting portions 78 and 79 each similar to the first example are located in sideby-side relation in a single metal piece enabling a single terminal to accommodate four wires.
As shown in Figure 13, edges of co-operat ing slot walls 81 and 82 may be bevelled on opposite sides to contact a wire with the wire aligned more nearly in a plane normal to the wire length than in the absence of such bevels.
This reduces the torque exerted locally on the wires by such edges. As shown in Figure 14, the edges 83 and 84 may tiso be bent towards each other to bring the planes of contact with the wire inserted between them more normal to the wire axis. Edges 85 and 86 of nongripping slot walls may be bent away from the edges 83 and 84 to permit lateral movement of such edges away from each other during wire insertion.
In the seventh example 87 shown in Figures 15 to 17, first and second slot sections are longitudinally spaced by a transition region 88 of length x providing a passageway permitting a conductor to pass between the slot sections without being pinched between transition edges 89 and 90 of slot walls 91 and 92. The amount of lateral offset of the walls of the first and second slots together with the inclination of the transition edges and the length x may be chosen so that a passageway of maximum and constant width is provided for a conductor throughout its travel along and between the two slot sections.
As shown in more detail in Figure 17, the angle A between transition edges 93 and 94 and the longitudinal slot edges 95 and 96 is preferably 30 degrees to provide a passageway of rear minimum resistance for a conductor passing through the transition region while angle B, between a line joining upper ends ot opposite transition edges 93 and 89 of the same plate should lie between 12 and 20 degrees, to provide a passageway of equal width to either of 'the first or second slot sections.
In the eighth example of terminal 98 shown in Figure 18, the above mentioned transition region is incorporated and a wire-stop 99 is pushed out of third plate 101 to limit the depth of insertion of a wire into the second slot section.
As shown in Figure 19, in a ninth example 102, the shaded non-co-operating opposite wall portions 103, 104 of the first slot section can be omitted as only one slot wall of each plate is required to provide the first wire gripping slot section. The widths of slots in first sections may be greater than in second sections and the lateral offset distances between slot walls of the first and second plates can be chosen to provide a second resultant wire gripping section 110 of less width than the upper section 111 to grip a smaller diameter conductor.
The lead-in edges 112 and 113 of the first and second plates 105, 106 respectively may be of differing length and angles so that a wire engages corners 114 and 115 at different times lowering resistance to the wire being inserted.
WHAT WE CLAIM IS: 1. A terminal comprising first and second metal plates located adjacent in opposed para Ilel relation and arranged for limited relative lateral movement in their planes and having respectively, first and second slots extending from respective mouths at least partly in registration with each other, the slots each comprising first and second wire receiving sections longitudinally spaced from the mouths, the walls of the first slot in the first wire receiving section being offset in a first lateral direction from the walls of the second slot in the first wire receiving section and the walls of the first slot in the second wire receiving section being offset in a second lateral direction from the walls of the second slot in the second wire receiving section, the second direction being opposite to the first direction, such that a conductor inserted into the first wire receiving sections, will be gripped between a first wall of the first slot and a second, opposite, wall of the second slot and a conductor inserted into the second wire receiving section will be gripped between a second wall of the first slot and a first opposite wall of the second slot.
2. A terminal according to claim 1 in which the first and second wire receiving sections of the slots are successively spaced from adjacent mouths and are joined by a transition region permitting a conductor to be moved along the slots from the first to the second wire receiving sections.
3. A terminal according to claim 1 or claim 2 in which the plates are integrally joined together at edges by a bight into which the mouths extend.
4. A terminal according to claim 1 or claim 2 in which the plates are integrally joined together at edges by a bight which extends substantially parallel to the slots.
5. A terminal according to claim 1 or claim 2 in which the plates are integrally joined together by a bight at edges remote from the mouth.
6. A terminal according to claim 2 in which the transition region provides a passageway of substantially equal width to the separation of the conductor gripping walls during travel of the conductor between wire receiving sections.
7. A terminal according to any one of claims 1 to 5 in which the separation of the first wall of the first slot and the second, opposite, wall of the second slot in the first wire receiving section is greater than the separation of the second wall of the first slot and the first, opposite wall of the second slot in the second wire receiving section.
8. A terminal substantially as described with reference to Figures 1 to 5 of the accompanying drawings.
9. A terminal substantially as described with reference to Figure 6 or Figure 7 of the accompanying drawings.
10. A terminal substantially as described with reference to Figure 8 of the accompanying drawings.
11. A terminal substantially as described
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (17)

**WARNING** start of CLMS field may overlap end of DESC **. aligned more nearly in a plane normal to the wire length than in the absence of such bevels. This reduces the torque exerted locally on the wires by such edges. As shown in Figure 14, the edges 83 and 84 may tiso be bent towards each other to bring the planes of contact with the wire inserted between them more normal to the wire axis. Edges 85 and 86 of nongripping slot walls may be bent away from the edges 83 and 84 to permit lateral movement of such edges away from each other during wire insertion. In the seventh example 87 shown in Figures 15 to 17, first and second slot sections are longitudinally spaced by a transition region 88 of length x providing a passageway permitting a conductor to pass between the slot sections without being pinched between transition edges 89 and 90 of slot walls 91 and 92. The amount of lateral offset of the walls of the first and second slots together with the inclination of the transition edges and the length x may be chosen so that a passageway of maximum and constant width is provided for a conductor throughout its travel along and between the two slot sections. As shown in more detail in Figure 17, the angle A between transition edges 93 and 94 and the longitudinal slot edges 95 and 96 is preferably 30 degrees to provide a passageway of rear minimum resistance for a conductor passing through the transition region while angle B, between a line joining upper ends ot opposite transition edges 93 and 89 of the same plate should lie between 12 and 20 degrees, to provide a passageway of equal width to either of 'the first or second slot sections. In the eighth example of terminal 98 shown in Figure 18, the above mentioned transition region is incorporated and a wire-stop 99 is pushed out of third plate 101 to limit the depth of insertion of a wire into the second slot section. As shown in Figure 19, in a ninth example 102, the shaded non-co-operating opposite wall portions 103, 104 of the first slot section can be omitted as only one slot wall of each plate is required to provide the first wire gripping slot section. The widths of slots in first sections may be greater than in second sections and the lateral offset distances between slot walls of the first and second plates can be chosen to provide a second resultant wire gripping section 110 of less width than the upper section 111 to grip a smaller diameter conductor. The lead-in edges 112 and 113 of the first and second plates 105, 106 respectively may be of differing length and angles so that a wire engages corners 114 and 115 at different times lowering resistance to the wire being inserted. WHAT WE CLAIM IS:
1. A terminal comprising first and second metal plates located adjacent in opposed para Ilel relation and arranged for limited relative lateral movement in their planes and having respectively, first and second slots extending from respective mouths at least partly in registration with each other, the slots each comprising first and second wire receiving sections longitudinally spaced from the mouths, the walls of the first slot in the first wire receiving section being offset in a first lateral direction from the walls of the second slot in the first wire receiving section and the walls of the first slot in the second wire receiving section being offset in a second lateral direction from the walls of the second slot in the second wire receiving section, the second direction being opposite to the first direction, such that a conductor inserted into the first wire receiving sections, will be gripped between a first wall of the first slot and a second, opposite, wall of the second slot and a conductor inserted into the second wire receiving section will be gripped between a second wall of the first slot and a first opposite wall of the second slot.
2. A terminal according to claim 1 in which the first and second wire receiving sections of the slots are successively spaced from adjacent mouths and are joined by a transition region permitting a conductor to be moved along the slots from the first to the second wire receiving sections.
3. A terminal according to claim 1 or claim 2 in which the plates are integrally joined together at edges by a bight into which the mouths extend.
4. A terminal according to claim 1 or claim 2 in which the plates are integrally joined together at edges by a bight which extends substantially parallel to the slots.
5. A terminal according to claim 1 or claim 2 in which the plates are integrally joined together by a bight at edges remote from the mouth.
6. A terminal according to claim 2 in which the transition region provides a passageway of substantially equal width to the separation of the conductor gripping walls during travel of the conductor between wire receiving sections.
7. A terminal according to any one of claims 1 to 5 in which the separation of the first wall of the first slot and the second, opposite, wall of the second slot in the first wire receiving section is greater than the separation of the second wall of the first slot and the first, opposite wall of the second slot in the second wire receiving section.
8. A terminal substantially as described with reference to Figures 1 to 5 of the accompanying drawings.
9. A terminal substantially as described with reference to Figure 6 or Figure 7 of the accompanying drawings.
10. A terminal substantially as described with reference to Figure 8 of the accompanying drawings.
11. A terminal substantially as described
with reference to Figure 9 of the accompanying drawings.
12. A terminal substantially as described with reference to Figure 10 of the accompanying drawings.
13. A terminal substantially as described with reference to Figure 11 of the accompanying drawings.
14. A terminal substantially as described with reference to Figure 12 of the accompanying drawings.
15. A terminal substantially as described with reference to Figures 15, 16 and 17 of the accompanying drawings.
16. A terminal substantially as described with reference to Figure 19 of the accompanying drawings.
17. An electrical connector comprising an insulating housing and a terminal according to any one of the preceding claims.
GB4780877A 1977-11-17 1977-11-17 Terminal for two conductors Expired GB1586507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4780877A GB1586507A (en) 1977-11-17 1977-11-17 Terminal for two conductors

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Application Number Priority Date Filing Date Title
GB4780877A GB1586507A (en) 1977-11-17 1977-11-17 Terminal for two conductors

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GB1586507A true GB1586507A (en) 1981-03-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2208977A (en) * 1987-08-20 1989-04-19 Johnson Electric Ind Mfg An electrical connector
GB2375237A (en) * 2001-05-01 2002-11-06 Yu-Ho Liang Terminal connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2208977A (en) * 1987-08-20 1989-04-19 Johnson Electric Ind Mfg An electrical connector
GB2375237A (en) * 2001-05-01 2002-11-06 Yu-Ho Liang Terminal connector

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931117