JP3161004B2 - Cable protection device for modular plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modular plug cable protection device used for electronic equipment and the like.

[0002]

2. Description of the Related Art FIGS. 4A and 4B show a conventional connection structure between a modular plug and a cable, wherein FIG. 4A is a plan view and FIG. 4B is a partially cutaway side view.

In FIGS. 4A and 4B, reference numeral 1 denotes a modular plug, and reference numeral 2 denotes a cable connected to the modular plug 1. The modular plug 1 is made of a synthetic resin, and has a cable insertion hole 3 formed on the rear side, and an insertion hole 5 for the core wire 4 of the cable 2 formed on the front side so as to communicate with the cable insertion hole 3. I have. The front side groove 6 is provided with a contact terminal 7 that comes into contact with the core wire 4 inserted into the insertion hole 5. A hole 8 is formed on the rear side in a direction perpendicular to the cable insertion hole 3. A cable clamp 9 is continuously connected to an end of the front wall of the hole 8 on the side of the cable insertion hole 3 by a hinge portion 10. Before connecting the cable 2, the cable clamp 9 is indicated by a chain line in FIG. As shown in FIG. 4B, the cable is rotated about the hinge 10 as shown by the solid line in FIG.
It is designed to protrude inside. Cable clamp 9
With the clamp portion 11 protruding into the cable insertion hole 3, the locking portion 12 formed at the end of the rear wall of the hole 8 on the cable insertion hole 3 side is engaged with the Return is prevented. At the front end, a plate-shaped fixing piece 13 having a spring property is integrally connected in an inclined state.

In the above configuration, the connection operation of the cable 2 will be described below. First, the cable 2 is inserted into the cable insertion hole 3 of the modular plug 1 with the cable clamp 9 of the modular plug 1 positioned in the hole 8 as shown by a chain line in FIG. 4
Is inserted into the core wire insertion hole 5 of the modular plug 1, and the cable core wire 4 is electrically connected to the contact terminal 7. Next, the cable clamp 9 of the modular plug 1 is forcibly pressed in the direction of arrow X in FIG. 4 (b) to rotate with the hinge 10 as a fulcrum, and the clamp 11 protrudes into the cable insertion hole 3. The cable 2 is deformed and bitten, and is engaged in a retaining state. At the same time, the cable clamp 9 engages with the lock portion 12 and is prevented from returning to the hole 8 side, so that the cable 2 can be integrated with the modular plug 1.

[0005] Then, the modular plug 1 is forcibly inserted into the modular socket by utilizing the elastic deformation of the fixing piece 13. This electrically connects the contact terminals 7 of the modular plug 1 to the contact terminals of the modular socket,
The fixing piece 13 of the modular plug 1 is pressed against the inner wall of the modular socket by the repulsive resilience, so that the modular plug 1 can be kept fixed to the modular socket.

[0006]

However, in the prior art as described above, when a pulling force is applied to the cable 2 from various directions, the cable 2 is disconnected as shown by a chain line in FIGS. 4 (a) and 4 (b). There is a problem that the core wire 4 of the cable 2 is easily broken because the curvature r of the bent portion is small.

The present invention solves such a conventional problem, and the cable is flexible to tensions from various directions.
In order to cope with
Accordingly, it is an object of the present invention to provide a modular plug cable protection device capable of preventing breakage of a cable core wire due to bending and extending the life.

[0008]

Means for Solving the Problems In order to achieve the above object, the present invention comprises any of rubber and synthetic resin,
A cable through-hole is formed, a bendable bushing portion, and a cable that is integrally provided at the front end side of the bushing portion, is engaged with the crimp portion of the modular plug, is prevented from falling off, and is penetrated by the bushing portion. Straight around
Before allowing engagement of the clamp that can be held down
Characterized by comprising a connecting portion formed in a forked right and left of the serial cable.

[0009] It is preferable that the outer edge of the front end of the bushing portion is brought into contact with the rear end surface of the modular plug.

[0010]

Therefore, according to the present invention, the connecting portion and the cable integrally provided on the front end side of the bushing portion are engaged with the clamp portion of the modular plug in a state where the cable is penetrated through the bushing portion, thereby preventing the cable from coming off. And unite. Thus, even if a tensile force is applied to the cable from various directions, the cable can be protected by bending the cable at a bendable bushing portion with a larger curvature.

[0011]

An embodiment of the present invention will be described below with reference to the drawings.

1 (a), 1 (b) and 1 (c) are a plan view, a side view and a rear view, respectively, showing a cable protecting device for a modular plug according to an embodiment of the present invention. 3 (a), 3 (b) and 3 (c) show a state in which the cable is connected to the modular plug using the same cable protection device. ) Is a plan view, (b) is (a)
(C) is a sectional view taken along the arrow BB in (a).

1 to 3, reference numeral 1 denotes a modular plug, 2 denotes a cable, and 14 denotes a cable protection device of the present invention. Since the modular plug 1 has the same configuration as that of the above-described conventional technology, the same portions are denoted by the same reference numerals and description thereof will be omitted.

The cable protection device 14 is made of rubber or synthetic resin, and a connecting portion 16 is integrally formed at the front end of the bushing portion 15. The bushing portion 15 has a cable through hole 17, and its outer shape gradually increases as it reaches the front end side from the protection portion 18 on the rear side, and a contact portion 19 with the rear end surface of the modular plug 1 is formed on the front end outer edge. Is formed. Then, the protection portion 18 on the small diameter side is bendable (see chain lines in FIGS. 3A and 3B). The connecting portion 16 is formed in a bifurcated shape so as to allow the cable 2 penetrating through the cable through hole 17 of the bushing portion 15 to move straight, and has a clamp portion 11 of the cable clamp 9 of the modular plug 1 on a lower surface.
An engagement portion 20 that can be engaged with is formed.

The above configuration will be described below in more detail together with the operation of connecting the cable 2.

First, as shown in FIG. 2, the cable 2 is passed through the through hole 17 of the bushing portion 15 of the cable protection device 14. Next, with the cable clamp 9 of the modular plug 1 positioned in the hole 8, FIGS.
As shown in the figure, the connecting portion 16 of the cable 2 and the cable protection device 14 is inserted into the cable insertion hole 3 of the modular plug 1, and the cable core 4 is inserted into the core insertion hole 5 of the modular plug 1. 4 is electrically connected to the contact terminal 7. Next, the cable clamp 9 of the modular plug 1 is forcibly pressed in the direction of arrow X and rotated with the hinge 10 as a fulcrum, so that the clamp 11 protrudes into the cable insertion hole 3 to deform the cable 2. Engage in the retaining state, and
1 is engaged with the engaging portion 20 in a retaining state. At the same time, the cable clamp 9 engages with the lock portion 12 and
Since the return to the side is prevented, the cable 2 and the cable protection device 14 can be integrated with the modular plug 1. Further, the contact portion 19 at the outer edge of the front end of the bushing portion 15 is provided.
Can be brought into contact with the rear end face of the modular plug 1 in a press-contact state.

Then, the modular plug 1 is forcibly inserted into the modular socket by utilizing the elastic deformation of the fixing piece 13. Thereby, the contact terminal 7 of the modular plug 1 is electrically connected to the contact terminal of the modular socket, and the fixing piece 13 of the modular plug 1 is pressed against the inner wall of the modular socket by its repulsive resilience, so that the modular plug 1 is connected to the modular socket. It can be held in a fixed state. In this state, even if a pulling force is applied to the cable 2 from various directions, the cable 2 bends at the protection portion 18 of the bushing portion 15 of the cable protection device 14 with a larger curvature R, so that the cable core wire 4 is prevented from breaking. Can be. Further, as described above, the contact portion 19 at the outer edge of the front end of the bushing portion 15 is brought into contact with the rear end surface of the modular plug 1 in a press-contact state, so that dust enters the modular plug 1 from the connection portion with the cable 2. And water can be prevented from entering.

[0018]

As described above, according to the present invention, with the cable penetrating the bushing portion, the connecting portion and the cable integrally provided at the front end side of the bushing portion are engaged with the clamp portion of the modular plug. The cable is bent and has a larger curvature at the bendable bushing even if tensile force is applied to the cable from various directions. Can be added, and the cable can be protected. In addition, additional tension can
Press the clamp with the plug of the plug to break the cable core wire.
Can be prevented , and the life of the cable can be extended.

Further, the outer edge of the front end of the bushing portion is brought into contact with the rear end surface of the modular plug in a state where the connecting portion and the cable are engaged with the clamp portion of the modular plug. It is possible to prevent dust from entering or water from entering, and prevent corrosion of the cable core. Therefore, the life of the cable can be extended.

[Brief description of the drawings]

1A is a plan view showing a cable protection device for a modular plug according to an embodiment of the present invention. FIG. 1B is a side view showing the cable protection device. FIG. 1C is a rear view showing the cable protection device.

FIG. 2 is a side view showing a state before a cable is connected to a modular plug using the cable protection device.

3A is a plan view showing a state in which a cable is connected to a modular plug using the cable protection device. FIG. 3B is a cross-sectional view taken along the line AA of FIG. BB arrow sectional view

FIG. 4A is a plan view showing a connection structure between a modular plug and a cable in a conventional example, and FIG. 4B is a partially cutaway side view showing the connection structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Modular plug 2 Cable 4 Cable core wire 9 Cable clamp 11 Clamp part 14 Cable protection device 15 Bushing part 16 Connecting part 17 Cable through hole 18 Protective part 19 Contact part 20 Engagement part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 63-79077 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/33 H01R 13/52 H01R 13 / 58

Claims (2)

(57) [Claims] 1. A bendable bushing part comprising a rubber or a synthetic resin, wherein a cable through hole is formed and a bendable bushing part is provided.
The bushing is provided integrally with the front end side of the bushing, and is engaged with the crumb portion of the modular plug to prevent the bush from coming off.
Press the outer periphery of the cable penetrated through the bushing directly.
The Ke to allow engagement of the clamp part which can feel more alert
A cable protection device for a modular plug , comprising a bifurcated connecting portion on the left and right sides of a cable. 2. The modular plug cable protection device according to claim 1, wherein an outer edge of a front end of the bushing portion is in contact with a rear end surface of the modular plug.