JP3127393B2 - Cable connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a cable connector which can be connected (daisy chain) without a flaw caused by contact with a core wire.

[0002]

2. Description of the Related Art Conventional cable connectors (wire connectors)
Is a housing 14 made of an insulator as shown in FIG.
A plurality of contacts 15 as shown in (b) of FIG.
The core wire 18 from which the end of the coated electric wire 17 has been stripped is inserted between the tip 19 of the contact 15 and the body 20 to connect with the contact 15. Tip 19 of contact 15 and body 20
Is made narrower than the diameter of the core wire 18 and the upper and lower U-shaped bent portions have elasticity, so that the core wire 18 is inserted by pushing open between the body 20 and the tip 19. Then, the tip 19 is elastically connected to the core 18 by the body 2.
Core wire 18 and contact 1
5 and the direction of the tip 19 and the core wire 1
Since the angle between the insertion direction of the core wire 8 and the insertion direction of the core wire 18 is acute, the core wire 18 has a function of preventing the core wire 18 from coming off. Thus, stable contact can be obtained by inserting the core wire 18 into the contact 15.

[0003] When the core wire 18 is to be pulled out, it is necessary to remove the core wire 18 shown in FIG.
When the cover 16 is pressed down and the pressing portion 21 of the cover 16 presses the tip 19 of the contact 15 as shown in FIG. 5, the tip 19 of the contact 15 is separated from the core 18 so that the core 18 can be pulled upward. To The fixed connection part 22 of the contact 15 is soldered and fixed to a through hole of a printed circuit board, for example.

[0004]

However, in the above-mentioned conventional cable connector, when the core wire is inserted into the contact, the core wire slides into the tip of the contact, and after the insertion, the tip of the contact slightly bites into the core wire. It acts as a retaining feature by being inserted. For this reason, there is a problem that the core wire is damaged. In addition, due to structural restrictions, it is not possible to make a plurality of contacts contact one core wire (daisy chain).

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional connector, it is an object of the present invention to make a core wire flawless and to make a plurality of contacts contact one core wire during insertion and fixing (daisy chain). It is to provide a cable connector that can be used.

[0006]

The cable connector of the present invention has the following means in order to achieve the above object. That is, the cable connector of the present invention comprises a contact-side assembly and a cable-side assembly, and after inserting the tip of the cable-side assembly into the fitting recess of the contact-side assembly with the tip inclined downward, the rear part of the cable-side assembly is contact-side. A cable connector, which is pivotally fitted so as to press against the assembly, wherein the cable-side assembly is configured such that a covered cable is wrapped around an insulator block from the rear side along the upper side, the front end, and along the lower side, and a portion along the lower side. Has a groove that extends rearward in the core wire state where the coating is removed and is then covered with the coating, and has a locking portion that fixes the fitting when fitted to the contact side assembly, The side assembly has a mating recess in the insulator block and the cable side assembly Position corresponding to the portion where the core wires of the cable when Mate appearing,
It has one or more metal contacts that have repulsion resilience when pressed from above, and has a locking portion that engages with the locking portion of the cable-side assembly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cable connector according to the present invention has a form in which a core wire whose coating is removed in the middle of a covered electric wire is pressed against an elastic metal contact. For this reason, there is almost no friction between the core wire and the contact, and there is almost no flaw on the core wire. In addition, a plurality of contacts can be brought into contact with one wire by providing a plurality of stripping portions of the electric wire along the longitudinal direction and providing a plurality of contacts corresponding thereto. The cable-side assembly is fixed so that the insulated wire is turned from the rear to the lower surface through the upper surface and the front end with respect to the insulator block, and is guided again to the rear. The portion along the lower surface of the electric wire is stripped so that the core wire is exposed, and this portion is pressed against the contact of the other side on the lower surface of the insulator block.

In order to fix the electric wire, a groove is provided in a necessary portion such as a rear portion or a tip portion of the insulator so that the electric wire does not shift and is stabilized, and the electric wire is fitted and fixed. The length of the insulator is increased as the number of mating contacts to be contacted increases. In addition, a locking portion is provided to prevent the contact from being easily removed due to elastic repulsion of the contact or external impact after being fitted to the contact side assembly. In a simple configuration, a projection may be provided on both side surfaces of the cable-side assembly, a recess may be provided at a position corresponding to when the contact-side assembly is fitted, and the projection and the recess may be engaged when the cable-side assembly is pushed in. . However, it is not limited to this.

The contact-side assembly has a fitting recess in the insulator block, and when the cable-side assembly is fitted into the fitting recess, the contact-side assembly is resiliently repelled when pressed from above to a position corresponding to the core portion where the coating has been removed. One or more contacts having force are provided along the direction of the core wire. When the cable-side assembly is inserted into the fitting recess with the tip lowered and the tip is engaged, and the rear end of the cable-side assembly is pressed against the contact-side assembly so that the core wire is insulated by the cable assembly insulator. The lower surface of the block is pressed against the contact. Since only the core wire is pressed against the contact in this manner, the core wire and the contact hardly rub against each other, and the core wire does not suffer from rubbing.

[0010] Further, when the cable-side assembly is fitted, the cable-side assembly has a locking portion which is opposed to and engages with the locking portion, thereby maintaining the fitting between the two assemblies. As in the example, the contact does not bite into the core wire to prevent the contact from coming off, and no flaw is caused by biting into the core wire.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cable connector according to the present invention will be described below with reference to the drawings. 1A and 1B are diagrams showing an embodiment of a cable connector according to the present invention, wherein FIG. 1A is a perspective view of a cable-side assembly 1, and FIG. 1B is a perspective view of the cable-side assembly 1 of FIG. (C) is a perspective view of the contact-side assembly 2, and (d) is a side view showing a state where the sheath of the covered electric wire 4 used in the cable-side assembly 1 is removed. The cable side assembly 1 attaches the covered electric wire 4 so as to wrap around the insulator block 3 from the rear (upper right in the figure) along the upper surface 9 and the lower surface 10 through the groove 5 at the front end and to extend rearward again. Can be The insulated wire 4 is fixed by fitting it into the grooves 6 and 7 at the rear and the groove 5 at the front end. The portion along the lower surface 10 of the insulated wire 4 is stripped to expose the core wire 8.

A front projection 24 is provided to prevent the tip from being lifted when the tip is inserted into the contact side assembly 2 and the rear is pushed down, and the fitting is maintained after the fitting. Locking projections 11 are provided on both left and right sides. The contact-side assembly 2 has a fitting recess 25 in the insulator block 13, and has a contact 12 at a position corresponding to the core wire 8 when the cable-side assembly 1 is fitted therein.
2 has a locking recess 23 so as to be held in a sufficiently pressed state, and the fitting is maintained by fitting the locking projection 11 of the cable side assembly into the locking recess 23.
This utilizes a slight deformation restoring property of the material of the insulator blocks 3 and 13.

As described above, the cable-side assembly 1 is inserted into the fitting recess 25 of the contact-side assembly 2 in a state where the front convex portion 24 is inclined downward, and when the cable-side assembly 1 is sufficiently inserted, the rear portion of the cable-side assembly 1 is contacted. When the core wire 8 is rotated to press against the side assembly 2, the core wire 8 is pressed against the contact 12 to obtain an electrical connection. When the core wire 8 is pressed down to a predetermined position, the locking projection 11 of the cable side assembly 1 causes the locking recess of the contact side assembly 2. 23, and the fitted state of both assemblies is maintained.

FIG. 2 is a cross-sectional view when the cable side assembly 1 is fitted to the contact side assembly 2 and when the cable side assembly 1 is fitted. (A) is a diagram showing a state in which the tip of the cable side assembly 1 is lowered and inclined and inserted into the contact side assembly 2, and (b) is a diagram in which the rear part of the cable side assembly 1 is also pushed down to make contact with the core wire 8. 1
It is a figure which shows the state which 2 contacted.

[0015]

As described above, in the cable connector of the present invention, electrical contact can be obtained only by pressing the core wire of the electric wire against the contact. There is an advantage that no flaw is generated. Also, the cable-side assembly is prevented from slipping off by the engagement of the locking portions provided on the insulators of the cable-side assembly and the contact-side assembly. Unlike the effect obtained, there is an advantage that a flaw of the core wire due to such biting does not occur. In addition, it is possible to provide a plurality of contacts on the contact side assembly by lengthening both assemblies and lengthening the core wire portion, thereby enabling a plurality of contacts to contact one core wire, that is, a daisy chain is possible. There are advantages.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a cable connector of the present invention and a side view of a covered electric wire to be attached.

FIG. 2 is a sectional view of an embodiment of the cable connector of the present invention.

FIG. 3 is a sectional structural view of a conventional cable connector and a perspective view of a contact.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable side assembly 2 Contact side assembly 3 Insulator block 4 Insulated wire 5 Groove 6 Groove 7 Groove 8 Core wire 9 Upper side surface 10 Lower side surface 11 Locking projection 12 Contact 13 Insulator block 14 Housing 15 Contact 16 Cover 17 Insulated wire 18 Core wire 19 Tip Reference Signs List 20 Body 21 Pressing part 22 Fixed connecting part 23 Locking concave part 24 Front convex part 25 Fitting concave part

Claims (1)

(57) [Claims] 1. A cable assembly comprising a contact-side assembly and a cable-side assembly. The cable-side assembly is inserted into the fitting recess of the contact-side assembly with the tip of the cable-side assembly inclined downward, and the rear part of the cable-side assembly is pressed against the contact-side assembly. The cable side assembly is a cable connector that turns and fits, and the cable side assembly wraps the coated cable in the insulator block from the rear side along the upper side, through the front end and along the lower side, and the coating along the lower side is removed. In the cored state after that, while having a groove that extends rearward and is fixed in a coated state, and has a locking portion that fixes the fitting when fitted to the contact side assembly, the contact side assembly, The insulator block has a fitting recess, and when the cable side assembly is Locking portion having one or a plurality of metal contacts having a rebound resilience when pressed from above at a position corresponding to a portion where the core wire of the cable is exposed, and engaging with the locking portion of the cable side assembly A cable connector comprising: