JP3410706B2 - Crimp terminals and crimp connectors for cables - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to a cable lug which is electrically conductive in crimping the leading end of the cable, and to a structure of crimp connectors, allows crimping without using a particularly special crimping tool The present invention relates to a crimp terminal for a cable and a crimp connector for a cable.

[0002]

2. Description of the Related Art Conventionally, a method in which a crimp terminal is crimped and attached after an insulating coating portion at the tip of an electric wire is completely peeled off is disclosed in, for example, Japanese Patent Application Laid-Open No. 7-296860 and Japanese Patent Application Laid-Open No. 6-2.
It is known as shown in Japanese Patent No. 60219. Among them, in the case of the enamel wire, since the enamel is baked and coated, it is not easy to peel off the enamel. Therefore, the problem is solved in JP-A-7-296860.
No. The outline is a structure in which at least one through hole is formed in the center of a wire barrel for crimping the tip of an electric wire, and the edge of the through hole projects in the direction of crimping the wire to form an edge. ing.

Further, the outline of Japanese Patent Laid-Open No. 6-260219 is an electric wire crimping fitting which is electrically connected by being crimped to a core wire portion of an electric wire which is exposed when an insulating coating is peeled off. The crimping metal fitting has a structure in which a cut-and-raised protrusion that bites into the core portion of the electric wire during the crimping is integrally provided.

[0004]

[SUMMARY OF THE INVENTION However, the former conventional technique, the latter both special crimping tool has a problem that it is necessary.

[0005] The present invention has been made in view of the circumstances, with a simple structure, the cable crimp terminal having an easy crimping portion to deformation, and in combination with the cable crimp connectors and deformable crimping sleeve, a special crimping tool It is an object of the present invention to provide a crimp terminal for a cable and a crimp connector for a cable that are unnecessary.

[0006]

The present invention employs the following technical means in order to solve the above problems. In the invention of claim 1, wherein, in the crimping connectors to connect butt cable, a crimp portion provided with a gap joint is formed at both ends, a round shape tubular crimp portion of the both end or polygonal tube A crimp-shaped sleeve,
A technical means of forming a weak portion at the front and rear tubular portions and an intermediate portion and clamping the front and rear tubular portions of this crimping sleeve and twisting in the opposite direction to crimp and lock the cables to be butted and connected. Adopted.

According to the invention of claim 2 , claim 1
In addition to the above invention, a technical means of forming one or more grooves, dents, perforations, and notches in the longitudinal direction or the lateral direction in a part of the crimp portion of the crimp connector is adopted.

According to a third aspect of the present invention, in a crimp terminal having a crimp portion for crimping and connecting a cable,
The crimping sleeve is composed of a terminal board portion and a crimping portion having a gap at a seam, and the crimping sleeve is covered with a crimping sleeve having a round tube-shaped or polygonal tube-shaped intermediate portion with a weak strength portion Adopting a technical means that the cable and the crimp terminal are crimped and locked by gripping the front and rear tubular parts and twisting in the opposite direction.

According to the invention of claim 4 , in a crimp terminal having a crimp portion for crimping and connecting a cable,
The terminal board portion and the crimping portion are formed, and the crimping portion has a round tubular shape or a polygonal tubular shape, and the front and rear tubular portions of the crimping portion are gripped and twisted in the opposite direction to form a cable. And a technical means of forming a plurality of holes in the intermediate portion and providing a weak portion so that the crimp terminal can be crimped and locked.

In a fifth aspect of the present invention, in a crimp connector for crimping and butt-connecting cables, crimp portions are formed at both ends, and the crimp portions have a round tubular shape or a polygonal tubular shape. Then, a plurality of holes are formed in the middle part so that the cables to be butt-connected can be crimp-locked by grasping the cylindrical parts before and after each crimping part at both ends and twisting in the opposite direction, and the part with weak strength Was adopted.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the present invention will be described in detail with reference to the drawings. Hereinafter, the present invention
Without using a special crimping tool according to a first embodiment will be described with reference cable crimp terminals can be easily crimped, and the crimp terminal having a crimp sleeve in FIGS. 1 to 8.

FIG. 1 shows a first embodiment, which is a crimp terminal provided with a crimp portion 3 for crimping and connecting a cable, which comprises a terminal board portion 2 and a crimp portion 3.
Has a round tubular shape or a polygonal tubular shape (the one shown in the figure is a hexagonal tubular shape), and grips the front and rear tubular end portions 16 of the crimp portion 3 and twists them in the opposite direction. In order to enable the cable 9 and the crimp terminal 1 to be crimp-locked with each other, for example, a plurality of holes 17 are formed in the intermediate portion to reduce the strength. In the present embodiment, the plurality of holes 17 are shown at each corner, but they may be provided at each piece. In addition, as a configuration that can be easily twisted, one end can be fixed with a wrench by forming a spanner hooking portion on the cylindrical portions at both ends, and the other end can be rotated and twisted for crimping. Is.

Although not shown as an application of the technique of the first embodiment to a crimp connector, although not shown, in a crimp connector for crimping and butt-connecting cables, crimp portions are formed at both ends, The crimping part has a round tubular shape or a polygonal tubular shape, and crimps and locks a cable to be connected by butting by gripping the front and rear tubular parts of each crimping part at both ends and twisting in the opposite direction. A crimp connector for a cable in which a plurality of holes are formed in the intermediate portion and a portion having low strength is provided so as to be possible is conceivable.

FIG. 8 shows a crimp terminal as a second embodiment in which the crimp portion 3 is covered with the crimp sleeve 15 and both ends 16 of the crimp sleeve 15 are rotated in the opposite direction so that crimp can be performed. is there.

[0015] First, the crimp sleeve 15 will be described with reference to FIGS. 5-7. The pressure-bonding sleeve is formed by rolling a plate material that is easily plastically deformed into a cylindrical pipe shape. However, as more easily deformable shape, the embodiment shown in Figure 4,
A large number of holes 17 (square holes in this embodiment) are formed in a plate material that is easily plastically deformed, and these are rounded into a cylindrical pipe shape. As a result, this has a shape in which the round tubular pipes at both ends 16 are connected by the ribs 18.

The embodiment shown in FIG. 6 is also a shape that is more easily deformed, and a large number of holes 17 (square holes in this embodiment) are bored in a plate material that is easily plastically deformed, and these holes are folded to form a polygonal tube. It is in the shape of a pipe (a hexagonal pipe in this embodiment).

Although the embodiment shown in FIG. 7 is partially different from the embodiment shown in FIG. 6 , a hole 17 is provided so that the crimp sleeve 15 can be deformed more easily. It is an example of a state in which the holes are not formed into each piece but are formed in the corners.

[0018] of the crimp sleeve 15 or more of FIGS. 5 to 7,
Select any, both end portions 16 of the crimping sleeve 15 in combination with the crimp terminal shown in FIGS. 2 to 4 described below
By gripping and rotating in the opposite direction and twisting, the rib 18 portion formed by forming the hole 17 of the crimp sleeve 15 is deformed and the crimp portion 3 of the crimp terminal is reduced by the gap 19 to end the cable end. The part is crimped.

The crimp terminal will now be described with reference to FIG. 2. When the crimp portion 3 is rolled into a tubular shape, it is processed so that a gap 19 is formed, and the crimp sleeve 3 is simply crimped.
Or a locking portion 20 (which may be spot-welded to the crimping sleeve at this portion) which is engaged with the crimping sleeve 15 so as to be horizontally opposed or diagonally opposed to each other with a gap 19 in between. The locking portion 20 is locked to the tubular portions of both ends 16 of the crimping sleeve 15, and the tubular portions of both ends 16 of the crimping sleeve 15 are rotated in the opposite direction to be deformed and twisted. And the crimping part is reduced. And
In the illustrated embodiment, the rib 18 having low strength is deformed and twisted.

Due to this twist, the crimp portion 3 of the crimp terminal is contracted only by the gap 19, and as a result, the cable 9 is crimped by the crimp portion 3.

The crimping terminal shown in FIG. 3, the gap 1 of the crimp portion 3
9 is a stepped shape, and the crimp terminal shown in FIG. 4 shows an embodiment in which the shape of the gap 19 of the crimp portion 3 is spiral.

The crimp terminals shown in FIGS. 3 and 4 are also shown in FIG.
2 , which is used in combination with the crimping sleeve 15 like the one shown in FIG. 8 , and deforms the crimping sleeve 15 so that the gap 19 of the crimping portion 3 can be easily shortened, or a rib for promoting the deformation. Since the use of 18 is the same, detailed description of each is omitted.

Further, the crimping sleeve 1 which is put on the crimping portion 3
As a modification of 5, a spring may be used. This is one in which the crimp portion 3 is crimped by twisting both ends of the spring in a direction in which the diameter is reduced.

As an application to the crimp connector utilizing the technique of the second embodiment, although not shown, in the crimp connector in which cables are butted and connected, a crimp portion provided with a gap at the joint is used. Formed on both ends, cover the crimping parts at both ends with a round tubular or polygonal tubular crimping sleeve. The crimping sleeve has a tubular portion and an intermediate portion having weak strength in the front and rear, A crimp connector for a cable is conceivable in which a cable to be abutted and connected can be crimp-locked by gripping the tubular portions at the front and rear of the sleeve and twisting in the opposite direction.

[0025]

According to the present invention, the following effects can be obtained based on the above configuration. (1) In the invention of claims 1 to 5, wherein, it can be crimped easily without the need for special crimping tool.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cable crimp terminal according to a first embodiment, which does not require a special crimping tool of the present invention.

FIG. 2 is a development view and a front view showing a crimp terminal of a second embodiment in which a special crimping tool of the present invention is unnecessary.

FIG. 3 is a development view and a front view showing a modification of the second embodiment.

FIG. 4 is a development view and a front view showing another modification of the second embodiment.

FIG. 5 is a perspective view showing a round tubular embodiment of a crimping sleeve used in combination with the crimping terminal shown in the second embodiment.

FIG. 6 is a perspective view showing a hexagonal tubular embodiment of the crimp sleeve.

FIG. 7 is a perspective view showing a hexagonal tubular modification of the crimp sleeve.

FIG. 8 is a perspective view showing a crimp terminal for a cable in which a crimp terminal and a crimp sleeve which do not require a special crimp tool of the present invention are combined.

[Explanation of symbols]

1 Crimping terminal for cable 2 Terminal board 3 Crimping section 9 Cable 15 Crimping sleeve 16 End 17: Hole 18: Rib 19: Gap 20: Locking part

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-124383 (JP, A) Actual opening Sho-55-141475 (JP, U) Actual opening Sho-63-45974 (JP, U) Actual opening Sho-57- 176064 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 4/18-4/20 H01R 43/04-43/048

Claims (5)

(57) [Claims] 1. A crimp connector for butt-connecting cables, wherein crimp portions having a gap at a joint are formed at both ends, and a crimp sleeve having a round tubular shape or a polygonal tubular shape is provided at the crimp portions at both ends. The crimping sleeve has a tubular portion formed in the front and rear and weak portions in the middle, and the front and rear tubular portions of the crimping sleeve are gripped and twisted in opposite directions to crimp the cables to be connected by butting. A crimp connector for cables, characterized in that it can be locked. 2. The crimp connection for a cable according to claim 1, wherein one or more grooves, dents, perforations, and notches are formed in a longitudinal direction or a lateral direction in a part of the crimp portion of the crimp connector. Child. 3. A crimp terminal having a crimp portion for crimping and connecting a cable, which comprises a terminal board portion and a crimp portion having a gap at a joint, and the crimp portion has a round tubular shape or a polygonal shape. A crimp sleeve having a weakened strength formed on a tubular middle portion is covered, and the front and rear tubular portions of the crimp sleeve are gripped and twisted in the opposite direction to crimp and lock the cable and the crimp terminal. Crimp terminal for cable characterized by 4. A crimp terminal having a crimp portion for crimping and connecting a cable, comprising a terminal board portion and a crimp portion, the crimp portion having a round tubular shape or a polygonal tubular shape. , A plurality of holes are formed in the intermediate portion to provide a weak strength portion so that the cable and the crimp terminal can be crimp-locked by gripping the tubular portions before and after the crimp portion and twisting in the opposite direction. A characteristic crimp terminal for cables. 5. A crimp connector for crimping and butt-connecting a cable, wherein crimp portions are formed at both ends, and the crimp portion has a round tubular shape or a polygonal tubular shape, and each crimp at each end is formed. Characterized in that a plurality of holes are formed in the middle portion and a weak strength portion is provided so that a cable to be butt-joined and connected by crimping by holding the tubular portions in front of and behind the portion can be twisted in the opposite direction. Crimping connector for cable.