JP2001319703A - Pressure contact terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect an electric wire in an electrically good condition. SOLUTION: The electric wire 1 is to be pressed into an electric wire connection part 4 of a pressure contact terminal 2 parallel to a shaft line, and the electric wire connection part 4 has a nearly V-shaped cross section composed of a curving-faced bottom plate 11 and both flat-faced side plates 12. Plural coating-cut-out pieces 13 which cut open a coating 1a of the electric wire 1 from the upper part of the both right and left side plates 12, are cut out to oppose to the direction orthogonal to the shaft line. Plural conductor contact pieces 14 which contact with a conductor 1b of the electric wire 1 from the lower part of the both right and left side plates 12 and the bottom plate 11, are folded along the shaft line so that an electro-conductive plating face appears on the surface of the conductor contact piece 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press contact terminal for electrically connecting a conductor of a wire and a wire connection portion by press-fitting the wire into the wire connection portion.

[0002]

2. Description of the Related Art A conventional pressure contact terminal of this type is formed from a conductive metal plate having conductive plating on both surfaces, and has a terminal connection portion for connecting a mating connection terminal and an electric wire connection portion for connecting an electric wire. . The wire connection part is a V-groove which can be press-fitted with the wire parallel to the axis. In the process of press-fitting the wire into the V-groove, the covering of the wire is cut off by the edge formed in the V-groove, and the conductor of the wire and the edge And are electrically connected.

[0003]

However, since the above-mentioned press contact terminal of the prior art is formed of a conductive metal plate plated with a conductive material, the surface in contact with the conductor at the edge, that is, the conductive surface is formed by punching the conductive metal plate. It is a punched surface and has no conductive plating. For this reason, the conductive surface may be oxidized later, and the electric wire and the electric wire connection portion may not be able to maintain an electrically good connection state.

An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a press contact terminal capable of maintaining a good electrical connection with an electric wire.

[0005]

A press contact terminal according to the present invention for achieving the above object is formed by processing a conductive metal plate plated with a conductive material, and press-fits an electric wire parallel to an axis into a wire connection portion. Then, in a press contact terminal that cuts out the coating of the electric wire and electrically connects the conductor of the electric wire and a part of the electric wire connection portion, the electric wire connection portion has left and right side plates having a cross-sectional groove shape, These left and right side plates cut and raise a part of the side plate in a direction orthogonal to the axis to cut out the coating of the electric wire, and cut a part of the electric wire connection portion below the coated cut piece. And a conductor contact piece that is folded back in the direction along the axis to contact the conductor of the electric wire.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiment. FIG. 1 is a perspective view of the first embodiment, in which a press contact terminal 2 to which an electric wire 1 is connected is punched and bent from a single conductive metal plate such as phosphor bronze having conductive plating on both surfaces. And the like. The press-connecting terminal 2 has a rectangular tube-shaped terminal connecting portion 3 to which a flat blade-shaped connecting end of a mating connecting terminal is connected, and an electric wire having a substantially V-shaped cross section into which the electric wire 1 is press-fitted from a direction parallel to the axis. A connection section 4 is provided.

FIG. 2 is a cross-sectional view of the electric wire connection portion 4, and FIG. 3 is an exploded perspective view of a stage before bending into a substantially V-shape.
The electric wire connection portion 4 has a curved bottom plate 11 and left and right side plates 12. Above the left and right side plates 12, a plurality of edge-shaped incision pieces 13 for incising the sheath 1a of the electric wire 1 are cut and raised so as to face from both sides in a direction orthogonal to the axis. Also, a plurality of conductor contact pieces 14 that are in contact with the conductor 1b of the electric wire 1 are formed in the lower portion of the left and right side plates 12 and the bottom plate 11 by cutting, and are folded back along the axis, for example, rearward to form a conductive plating surface. It is made to appear on the upper surface. The cutout pieces 13 and the conductor contact pieces 14 are arranged at equal intervals in a direction along the axis. Then, the upper surface of the covering cut piece 13 is inclined obliquely inward and downward to guide the electric wire 1 into the electric wire connection portion 4.
a.

When the electric wire 1 is connected to the press-connecting terminal 2 and the electric wire 1 is arranged in a direction parallel to the axis and press-fitted into the electric wire connecting portion 4, the electric wire 1 is cut while the coating 1 a is cut by the left and right coating cut pieces 13. As shown in the perspective view of FIG. 4 and the cross-sectional view of FIG. 5, the conductor 1b of the electric wire 1 that has been exposed by the incision comes into contact with the conductor contact piece 14 as shown in the perspective view of FIG.

As described above, in the first embodiment, since the conductor contact piece 14 is folded, there is a conductive plating surface on the surface in contact with the conductor 1b.
The contact surface with the conductor 1b has no fear of oxidation or the like, and can maintain an electrically good connection state.

FIG. 6 is a cross-sectional view of the second embodiment, and FIG.
Is an exploded perspective view, in which the sheath cutout 13 ′ of the wire connection portion 22 of the press contact terminal 21 is deformed. That is, the lower edge of the covering incision piece 13 'is an acute hook 13b. The second embodiment is different from the first embodiment in that the conductor 1
b can be locked by the hooks 13b.
Is prevented from coming out of the electric wire connection part 22, and a good connection state can be maintained.

FIG. 8 is a cross sectional view of the third embodiment, and FIG.
Is an exploded perspective view. Also in the third embodiment, the sheath cutout 13 ″ of the wire connection portion 24 of the press contact terminal 23 is deformed. An expanded portion 13c is formed in which the thickness of the covering cutout 13 "is gradually increased downward in the direction along the axis by bending.

In the third embodiment, the incised portion of the sheath 1a can be expanded by the expanding portion 13c according to the press-fitting of the electric wire 1, and the conductor 1b can contact the conductor contact piece 14 with a wider area. , Can be connected in an electrically favorable state. Also, since the surface of the expanded portion 13c that is in contact with the conductor 1b is also a surface that has been subjected to conductive plating, good connection is maintained at this portion without oxidation or the like.

FIG. 10 is a longitudinal sectional view of a fourth embodiment, in which a conductor contact piece 14 'of an electric wire connection portion 26 of a press contact terminal 25 is shown.
Is modified from that of the first embodiment, and the conductor contact piece 14 'has an expanded portion 1 corresponding to the expanded portion 13c of the third embodiment.
4a are formed. That is, the end of the folded conductor contact piece 14 ′ is formed as an enlarged portion 14 a, and the thickness of the end is substantially equal to the thickness of the covering cut piece 13 in the same direction. Has been gradually increased.

Therefore, in the fourth embodiment, the incised portion of the coating 1a incised by the clothing incision portion 13 is expanded by the expanded portion 14a of the conductor connecting portion 14 ', so that the first As in the third embodiment, a large area of the conductor 1b comes into contact with the plated surface of the conductor connection portion 14 '.

In the first to fourth embodiments, the conductor contact pieces 14, 14 'are provided so as to extend from the lower part of the side plate 12 to the bottom plate 11, but the conductor 1b of the electric wire 1 is substantially There is no problem even if it is not formed in a part that does not come into contact with the object, for example, a central part.

[0016]

As described above, in the press contact terminal according to the present invention, since the contact surface with the conductor exposed from the cut coating of the electric wire is the surface plated with the conductive material, an electrically good connection state is obtained. Can be maintained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment.

FIG. 2 is a cross-sectional view of an electric wire connection part.

FIG. 3 is an exploded perspective view of an electric wire connection portion.

FIG. 4 is a perspective view showing a state where electric wires are connected.

FIG. 5 is a cross-sectional view of an electric wire connection portion in a state where electric wires are connected.

FIG. 6 is a cross-sectional view of the second embodiment.

FIG. 7 is a developed perspective view.

FIG. 8 is a cross-sectional view of the third embodiment.

FIG. 9 is a developed perspective view.

FIG. 10 is a longitudinal sectional view of a fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric wire 1a Coating 1b Conductor 2, 21, 23, 25 Pressure contact terminal 3 Terminal connection part 4, 22, 24, 26 Electric wire connection part 11 Bottom plate 12 Side plate 13, 13 ', 13 "Coated cut piece 13a Guide surface 13b Locking surface 13c, 14a Expanding portion 14, 14 'Conductor contact piece

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshikazu Tanaka 1-chome, Kotake-cho, Nerima-ku, Tokyo Rishisei Denso Co., Ltd. F-term (reference) 5E012 AA14

Claims (5)

[Claims] 1. An electric wire which is processed from a conductive metal plate subjected to electroplating, press-fits an electric wire parallel to an axis into an electric wire connecting portion, cuts a coating of the electric wire, and connects the electric wire conductor and the electric wire connection. In the press-connecting terminal electrically connecting a part of the portion, the electric wire connection portion includes a left and right side plate having a cross-sectional groove shape, and a part of the side plate in a direction orthogonal to an axis of the left and right side plates. And a conductor cutting piece that cuts and raises the wire and cuts off the coating of the electric wire, and cuts a part of the wire connection portion below the coating cutting piece and turns in a direction along an axis to contact a conductor of the electric wire. A pressure contact terminal characterized by the above-mentioned. 2. The crimp terminal according to claim 1, wherein the cross-sectional groove shape is substantially V-shaped. 3. The crimp terminal according to claim 1, wherein a lower edge of the covering cutout is formed at an acute angle. 4. The press contact terminal according to claim 1, wherein the thickness of the inner end surface of the incision piece gradually increases downward. 5. The pressure contact terminal according to claim 1, wherein a portion of the conductor contact piece adjacent to the cutout piece gradually increases in a thickness in a direction along an axis downward.