JPH02230669A - Contactor for connection of conductor - Google Patents

Abstract

PURPOSE:To well balance the conductivity with rigidity to improve the reliability by arranging a rigid body to strengthen rigidity at the outside of a conductive material or between conductive materials. CONSTITUTION:A contact blade 3 whose cross section is formed about in a U-shaped type is made up by letting a rigid body 2 composed of alloy steel material, etc., lie between conductive materials 1 constituted of copper, etc., and a blade edge 3a is formed in an acute angle. The contact blades 3 are integrally installed in a plurality at prescribed intervals to make up a contactor 4. Thereby, the conductivity and rigidity become well balanced so that the penetrability at the time when the contact blade 3 is thrusted and made to contact with the insulating cover of an insulated wire is good and the reliability can be improved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a contact piece for connecting conductors, and in particular, it provides rigidity to a conductive material that connects conductors to achieve a good balance between conductivity and rigidity. This invention relates to a contact piece for connecting a conductor.

[Conventional technology]

Conventionally, as a contact piece for connecting a conductor to obtain an electrical connection between a conductor such as a covered electric wire and a branch line, etc., for example, a conductive contact blade is pierced into an insulating coating and penetrated to the internal conductor. Some contact blades make electrical contact with the conductor.

[Problem to be solved by the invention]

However, with conventional contact pieces for connecting conductors, the material of the contact blade is simply a conductive material or a single member such as a rigid body, resulting in an inappropriate balance between conductivity and elasticity, resulting in insulation. If an attempt is made to obtain the penetration property of the insulation coating, the electrical conductivity deteriorates, and if an attempt is made to obtain the electrical conductivity, the penetration property of the insulating coating becomes poor. Furthermore, when using a conductive material such as copper, high reliability cannot be obtained because of dullness, settling, etc. caused by long-term use.

Therefore, an object of the present invention is to provide a contact piece for connecting a conductor, which can provide a good pF balance between conductivity and rigidity by imparting rigidity to a conductive material, and can obtain high reliability.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention provides a contact piece for connecting a conductor, in which a rigid body is provided outside the conductive material or between the conductive materials to increase its rigidity.

That is, the contact piece for connecting a conductor of the present invention has a rigid body made of steel or the like arranged on the outside of a conductive material made of copper or the like that contacts the conductor or between the conductive materials to increase its rigidity.
For example, in the case of a contact piece in which a plurality of sharp tip portions pierce an insulating coating and make contact with a conductor, the structure of the contact blade may be two types, such as one conductive material, one rigid body, or one conductive material, one rigid body, and one conductive material.
It has a layered or three-layered structure. By doing this, when piercing the insulation coating with the contact blade, it is possible to improve the penetration performance, and since the contact blade is made of a conductive material and a rigid body, the conductivity is not impaired. . In addition, in the case of a contact piece that does not have an acute tip and is brought into direct contact with a conductor, the structure of the engagement groove in which the bare conductor engages is arranged with a conductive material on the inside and a rigid body on the outside.
Thereby, it is possible to eliminate the interference between the conductive material and the bare conductor, and to improve the contact state. The contact piece of the present invention can be applied to connectors such as electric wire conductors, arrester conductors, fuse conductors, etc., and the shape is not limited to the shape of a crimp sleeve. Further, it can be used for various types of connections such as direct connection and branch connection.

〔Example〕

Hereinafter, the contact piece for connecting conductors of the present invention will be explained in detail.

Figure 1 ({). (0). (I1) shows a first embodiment of the present invention, in which a contact blade 3 formed in a substantially U-shape in cross section has a structure in which a rigid body 2 made of an alloy steel material or the like is interposed between a conductive material 10 made of copper or the like. The cutting edge 3a is formed at an acute angle. A plurality of contact blades 3 are integrally provided with a predetermined interval, thereby forming a contact piece 4. In particular, as shown in (c), the tip portion 3a is constructed of a rigid body 2 to improve the thrusting characteristics.

Figure 2 C4). (+7> indicates a modification of the contact piece 4 of the present invention, FIG. 1<4). As the cross-sectional structure of the contact blade 3, which has a substantially U-shaped cross section as shown in (1'l), there is a conductive material l inside.
, with a rigid member 2 disposed on the outside. but,
The shape of the contact blade 3 is not limited to this, and may be a shape having a chevron-shaped cutting edge 3a such as a two-blade or three-blade blade as shown in FIGS. 3(A) to 3(G). In this case, the conductive material 1 and the rigid body 2 are of course arranged in a direction perpendicular to the plane of the paper, but they may also be arranged in the direction in which the cutting edges 3a are arranged.

Figure 4 ({). (rj). (c) shows another modification of the contact piece 4 of the present invention, in which the contact piece 4 is constituted by a plurality of contact blades 3 and a plurality of smoothers 5 interposed therebetween. A recess 3 is provided on each one side of each contact blade 3 and each smoother 5.
b, 5b have protrusions 3C, 5c protruding from their respective other surfaces, and the protrusion 3c of the contact blade 3 is in the recess 5b of the base plate 5.
The protrusions 5C of the smoother 5 are fitted into the recesses 3b of the contact blade 3, and are fixed to each other. Also, Figure 5 (
{)． As shown in (11), a smoothing protrusion 3d is integrally molded on one side of the contact blade 3, and four points 3e are provided on the other side to engage with the smoothing protrusion 3d of the adjacent contact blade. It may be configured. Furthermore, Figure 6 ({
). Blade portion 4a continuous in the length direction as shown in ([1)
The contact piece 4 may have the following. Although the contact blade 3 of the contact piece 4 described above is not shown, it is naturally made up of the conductive material 1 and the rigid body 2. All of these contact blades 3 can be manufactured by pressing or cutting.

FIG. 7 shows an exploded view of the tightening member 6 using the contact piece 4 of the present invention. This fastening member 6 has a first fastening piece 7, a second fastening piece 8 corresponding to the first fastening piece 7, and a first fastening piece 7 and a second fastening piece 8. A bolt 9 to be inserted into the hole, a nut 11 that engages with the bolt 9 via a spring washer 10, and a wire locking recess 12 formed on the tightening side of the first tightening piece 7. The contact piece 4 is fixed in the implant groove 13.

In this configuration, the bolt 9 and nut 11 are tightened via the spring washer 10 so as to pinch the wire 20 (FIG. 8) between the wire locking recesses 12 of the tightening pieces 7 and 8. When this is done, each contact piece 3 of the contact piece 4 pierces the sheath 21 of the electric wire 20. At this time, since the contact piece 3 is composed of the conductive material 1 and the rigid body 2, the rigidity of the entire contact blade 3 is strengthened, and the cutting edge 3a of the contact blade 3 is as shown in FIG. 8(A). (II+). As shown in (c), the covering 2I
It is possible to easily break through the wires and bite into the strands of the conductor 22, thereby making contact with the conductor 22.

Good conductivity can be obtained by the conductive material 1 of the contact blade 3. Note that (c) shows the case where the cutting edges 3a are aligned in a row.

Figure 9 ({). (o) shows another embodiment using the contact pieces 4 of the present invention, in which two contact pieces 4 are fixed on both sides of a holder 14 made of the same material as the conductive material 1 (vA in this embodiment). The two contact pieces 4 are connected to each other via the holder 14.
7 and are electrically connected. Covered wires 20a and 20b are inserted from the front and back of the holder 14, and the cutting edge 3a of the contact blade 3 is inserted into the coverings 21a and 2lb of the covered wires 20a and 20b.
The conductors 22a and 22b are penetrated through the conductors 22a and 22b. This electrically connects the conductors 22a and 22b.

Also, Figure 10 ({). If the contact pieces 4 are alternately arranged facing in opposite directions as shown in FIG. 11, a gap 4b can be formed without using any space. Even better electrical contact can be obtained by positioning it between the back surfaces of 20b.

Figure 12 ({). (o) shows a second embodiment of the present invention, and in (a), an engaging groove 25 configured by disposing a conductive material l on the inside and a rigid body 2 on the outside has two grooves from the front and back. Bare conductors 31 and 32 are inserted and electrically connected via the conductive material 1. Further, in (0), two engaging grooves 25a, 25b are formed by disposing the conductive material 1 having a cross section of approximately "ε" shape inside the rigid body 2, and the engaging grooves 25a.
, insert the bare conductors 31 and 32 from the front and back of 25b.
, so that they are electrically connected via the conductive moon 1. With such a structure of the contact piece, the rigidity can be increased by the rigid body 2, and when a bare conductor is inserted into the engagement groove 25, it is possible to eliminate the interference between the conductive material 1 and the bare conductor, and a good contact state can be achieved. It can be done.

C Effects of the Invention] As explained in Explanation 1-1 above, according to the contact piece for connecting conductors of the present invention, since the rigid body is disposed outside the conductive material that contacts a conductor such as an electric wire or between the conductive materials, it is possible to It can provide rigidity, thereby achieving a good balance between conductivity and elasticity.

In other words, when a contact blade is used to pierce the insulation sheath of a covered wire and make contact with the conductor, it is possible to improve the penetration performance of the contact blade without impairing conductivity, thereby reducing the amount of damage caused by a small amount of damage. You can pierce the contact piece with. Also,
When a contact piece is brought into direct contact with a bare conductor, there is no interference between the conductive material of the contact piece and the bare conductor, and a good contact state can be achieved.

[Brief explanation of the drawing]

Figure 1 ({). (1). (+i) is an explanatory diagram showing one embodiment of the present invention, and FIG. 2 ({). (II) is an explanatory diagram showing another example of the contact piece, Figures 3 (a) to (g) are explanatory diagrams showing other examples of the cutting edge of the contact piece, and Figure 4 (a)
．． (u). (J+), Figure 5 (a). (0) and Figure 6 (a). (0) is an explanatory diagram showing another structure of the contact piece, FIG. 7 is an exploded configuration diagram showing the fastening member 1 using the contact piece, and FIG. 8 is (a). (II) and (C) are explanatory diagrams showing the contact state of the electric wire and the contact piece, Fig. 9 is an explanatory diagram showing another embodiment using the contact piece, and Fig. 10 ({). (n)
11 is an explanatory diagram showing a modification of FIG. 9, and FIG.
figure({) . (TI) is an explanatory diagram 6 showing the second embodiment of the present invention. Explanation of symbols

Claims (3)

[Claims] (1) A contact piece for connecting conductors that electrically connects conductors such as covered wires, characterized by having a laminated structure consisting of a conductive material and a rigid body that increases rigidity. (2) The contact piece for connecting a conductor according to claim 1, wherein the laminated structure has a tip end formed at an acute angle, and a plurality of the laminated structures are disposed intermittently. (3) The contact piece for connecting a conductor according to claim 1 or 2, wherein the conductive material is made of copper or a copper alloy, and the rigid body is made of iron or an iron alloy such as steel.