JP2910477B2 - 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 Conventionally, when tensile force is applied to a cable connected to a modular plug from various directions, if the cable is bent at a small curvature, the core wire of the cable is easily broken. Therefore, the present applicant has previously filed Japanese Patent Application No. 4-6021.
No. 5 proposes a modular plug cable protection device capable of increasing the bending curvature of a cable when a tensile force is applied to the cable, preventing breakage of a core wire, and extending the life. Hereinafter, the conventional modular plug cable protection device will be described with reference to the drawings.

FIGS. 3 and 4 show a conventional cable protecting device for a modular plug. FIG. 3A is a plan view showing a state where a cable is connected to a modular plug using the cable protecting device, and FIG. FIG. 4 is a sectional view taken along the line BB of FIG. 4, and FIG. 4 is a side view showing a state before the cable is connected to the modular plug using the cable protection device.

In FIGS. 3 and 4, reference numeral 51 denotes a modular plug, 52 denotes a cable, and 53 denotes a conventional cable protection device.

The modular plug 5 is made of synthetic resin, and has a cable 52 and a cable protection device 53 described later on the rear side.
A hole 54 into which the connecting portion 66 of the cable 52 can be inserted is formed, and a hole 56 through which the core wire 55 of the cable 52 is inserted is formed on the front side portion. A hole 57 is formed at the front end in a direction perpendicular to the hole 56, and a contact terminal 58 is provided in the hole 57 for contacting the core wire 55 inserted into the hole 56. A hole 59 is formed on the rear side in a direction perpendicular to the hole 54. Hole 5
A cable clamp 60 is continuously connected to an end of the front wall 9 on the side of the hole 54 by a hinge 61, and this cable clamp 60 is housed in a hole 59 as shown in FIG. As shown in FIG. 3B, the rotation is made about the hinge 61 so that the clamp 62 protrudes into the hole 54. With the clamp portion 62 protruding into the hole 54, the cable clamp 60 is engaged with a lock portion 63 formed at the end of the hole 59 on the rear wall of the hole 59, and is prevented from returning to the hole 59. It is supposed to be. At the front end, a plate-shaped fixing piece 64 having a spring property is integrally provided in an inclined state.

The cable protection device 53 is made of rubber or synthetic resin.
Are integrally formed. The cable protection part 65 has a cable through hole 67, and extends from the middle part to the front end side,
The outer shape gradually increases, and a contact portion 68 with the rear end surface of the modular plug 51 is formed on the outer edge of the front end. The small diameter portion on the rear side of the cable protection portion 65 is bendable. The connecting portion 66 is formed in a forked shape so as to allow the cable 52 penetrating through the cable through hole 67 of the cable protecting portion 65 to move straight, and has a lower surface capable of engaging with the clamp portion 62 of the cable clamp 60 of the modular plug 51. A joining portion 69 is formed.

In the above configuration, the cable 52
Will be described. First, as shown in FIG. 4, the cable 52 is passed through the through hole 67 of the cable protection section 65 of the cable protection device 53. Next, with the cable clamp 60 of the modular plug 51 positioned in the hole 59, as shown in FIGS.
2 and the connecting portion 66 of the cable protection device 53 are inserted into the hole 54 of the modular plug 51, and the cable core wire 55 is inserted into the core wire insertion hole 56 of the modular plug 51, and the cable core wire 55 is electrically connected to the contact terminal 58. Connecting. Next, the cable clamp 60 of the modular plug 51 is forcibly pressed inward (in the direction of the arrow Y) to rotate with the hinge 61 as a fulcrum, so that the clamp 62 protrudes into the hole 54 to deform the cable 52. The clamp portion 62 is engaged with the engaging portion 69 in the retaining state while being engaged in the retaining state. At the same time, cable clamp 6
0 engages with the lock portion 63 and prevents the return to the hole 59 side, so that the cable 52 and the cable protection device 53 can be integrated with the modular plug 51. Also,
The contact portion 68 at the outer edge of the front end of the cable protection portion 65 can be brought into contact with the rear end of the modular plug 51 in a press-contact state.

Then, the modular plug 61 is fixed to the fixing piece 64.
Forcibly insert into modular socket using elastic deformation of. Thereby, the contact terminal 58 of the modular plug 51
Can be electrically connected to the contact terminals of the modular socket, and the fixing piece 64 of the modular plug 51 can be pressed against the inner wall of the modular socket by its repulsive resilience, so that the modular plug 51 can be held fixed to the modular socket. In this state, even if a tensile force is applied to the cable 52 from various directions, the cable 52 bends the cable protection portion 65 of the cable protection device 53 with a larger curvature R, so that the cable core 55 can be prevented from breaking. Further, as described above, the contact portion 68 at the outer edge of the front end of the cable protection portion 65 is pressed against the rear end surface of the modular plug 51 so that dust enters the modular plug 51 from the connection portion of the cable 52. And water can be prevented from entering.

[0009]

However, in the above-described conventional configuration, when the cable 52 is connected to the modular plug 51, the cable protection device 53 is positioned in advance at a specific position of the cable 52, and However, there is a problem that the connection cannot be easily performed because the press-fitting is performed.

[0010] The present invention is to solve such a conventional problem, can easily perform the connection work, can maintain a reliable connection state, and furthermore, the bending resistance of the cable It is an object of the present invention to provide a modular plug cable protection device capable of preventing disconnection of a cable core wire and extending the life of the cable.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a cable made of any one of rubber and synthetic resin, the cable being engaged with a cable clamp of a modular plug and penetrated. And a bendable cable protection portion, which is integrally provided on the front side of the cable protection portion, fits outside the modular plug, and fits inside the insertion opening of the housing. A stopper provided integrally with the inside of the fitting portion and elastically engaging with a vacant hole after the cable clamp of the modular plug projects to engage the cable. It is provided.

[0012]

According to the cable protection device of the present invention configured as described above, the cable is passed through the cable protection portion and the fitting portion of the cable protection device, the cable is inserted into the modular plug, and the cable clamp is inserted through the hole. Protrude and deform the cable to make it bite and connect. Thereafter, the cable protection device is moved in the axial direction of the cable, and the retaining portion inside the fitting portion of the cable protection device is elastically engaged with the hole in the modular plug, which is a space after the cable clamp protrudes. Thereby, the cable protection device can be integrated with the cable. In use, the modular plug is inserted through the insertion opening of the housing, and then the cable protection device is fitted into the insertion opening of the housing. After connecting the cable to the modular plug in this way, the cable protection device can be integrated with the modular plug and the cable.
In addition, the fitting portion of the cable protection device is fitted into the insertion opening of the housing to prevent the fitting portion from expanding and prevent the inside retaining portion from being detached from the hole of the modular plug. it can. And, in use, even if a tensile force is applied to the cable from various directions, the cable can be protected by being bent at a large curvature by the bendable cable protection portion,
At this time, since the fitting portion of the cable protection device is fitted into the insertion opening of the housing as described above, the behavior of the modular plug due to the bending of the cable can be minimized.

[0013]

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

FIGS. 1 and 2 show a cable protecting device for a modular plug according to an embodiment of the present invention.
FIG. 1A is a plan view of a state in which a cable is protected by the cable protection device, FIG. 1B is a cross-sectional view taken along the line AA, and FIG. 2 is a state in which the cable is being protected by the cable protection device. It is sectional drawing similar to 1 (b).

In FIGS. 1 and 2, 1 is a modular plug, 2 is a cable connected to the modular plug 1, 3
Is a cable protection device of the present invention, and 4 is a housing of a modular socket.

The modular plug 1 is made of a synthetic resin, and has a cable insertion hole 5 formed on the rear side, and a cable insertion hole 7 for the core wire 6 of the cable 2 communicating with the cable insertion hole 5 on the front side. Is formed. A hole 8 is formed at the front end in a direction perpendicular to the insertion hole 7, and the hole 8 is provided with a contact terminal 9 that contacts the core wire 6 inserted into the insertion hole 7. A hole 10 is formed on the rear side in a direction perpendicular to the cable insertion hole 5. A cable clamp 11 is connected to an end of the front side wall of the hole 10 on the side of the cable insertion hole 5 by a hinge portion 12, and this cable clamp 11 is housed in the hole 10 before connecting the cable 2 (FIG. 4), FIG.
(B), as shown in FIG. 2, it rotates around the hinge 12 so that the clamp 13 protrudes into the cable insertion hole 5. With the clamp portion 13 protruding into the cable insertion hole 53, the cable clamp 11 is engaged with a lock portion 14 formed at the end of the rear wall of the hole 10 on the side of the cable insertion hole 5, and The return to the side is prevented. At the front end, a plate-like fixing piece 15 having a spring property is integrally connected in an inclined state.

The cable protection device 3 is made of rubber or synthetic resin, and a cable protection portion 16 on the rear side and a fitting portion 17 on the front side are integrally formed. Cable protection unit 16
Has a through-hole 18 through which the cable 2 passes tightly. The fitting portion 17 has a tightly fitted inside shape on the outside of the rear side of the modular plug 1, and has a outside shape of the housing 4. It is formed to fit tightly inside the insertion slot 19. Inside the fitting portion, there is integrally provided a retaining portion 20 which becomes a space after the cable clamp 11 of the modular plug 1 protrudes and is elastically engaged with the hole 10.

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

First, as shown in FIG. 2, the cable 2 is passed through the through hole 18 of the cable protection section 16 of the cable protection device 3 in a tight state. Next, with the cable clamp 11 of the modular plug 1 positioned in the hole 10, the cable 2 is inserted into the cable insertion hole 5 of the modular plug 1, and the cable core 6 is inserted into the core insertion hole of the modular plug 1. 7 to electrically connect the cable core wire 6 to the contact terminal 9. Next, the cable clamp 11 of the modular plug 1 is forcibly pressed inward and rotated with the hinge 12 as a fulcrum, and the clamp 13 is inserted into the cable insertion hole 5.
The cable 2 is deformed and bitten into the cable 2 so that the cable 2 is engaged with the cable 2 in a retaining state. At the same time, the cable clamp 11 engages with the lock portion 14 and is prevented from returning to the hole 10, so that the cable 2 can be integrated with the modular plug 1. Next, the cable protection device 3 is moved forward in the axial direction of the cable 2, and the retaining portion 20 is elastically engaged with the hole 10 in the modular plug 1, which is a vacant space after the cable plump 11 protrudes, Fitting part 17
To the outside of the rear side of the modular plug 1. Thereby, the cable protection device 3 can be integrated with the modular plug 1 and the cable 2. Then, the modular plug 1 is forcibly inserted into the insertion opening 19 of the housing 4 of the modular socket by utilizing the elastic deformation of the fixing piece 15. insert. As a result, the contact terminals 9 of the modular plug 1 are electrically connected to the contact terminals of the modular socket, and the fixing pieces 15 of the modular plug 1 are pressed against the housing 4 by the repulsive resilience. 17 is tightly fitted inside the insertion slot 19, so that the modular plug 1, the cable protection device 3, and the cable 2 can be fixed to the housing 4. In this state, even if a tensile force is applied to the cable 2 from various directions, the cable 2 bends the cable protection portion 16 of the cable protection device 3 with a larger curvature R, so that the cable core wire 6 can be prevented from breaking.

After the cable 2 and the modular plug 1 are connected so as to be integrated by the original connection method as described above, the cable protection device 3 is connected to the modular plug 1 and the cable 2.
Since the cable 2 is integrated, the connection work of the cable 2 can be easily performed. Also, the fitting portion 17 of the cable protection device 3
Is prevented from being expanded by being fitted into the insertion opening 19 of the housing 4.
There is no danger of falling out of the hole 10 and a reliable connection state can be maintained. Further, the behavior of the modular plug 1 with respect to the bending of the cable 3 can be reduced as much as possible, and the bending resistance, which is the original purpose of the cable protection device 3, can be further improved. As described above, the cable 2 is tightly penetrated into the through hole 18 of the cable protection device 3, and the fitting portion 17 of the cable protection device 3 is connected to the outside of the rear side of the modular plug 1 and the insertion port 19 of the housing 4. Since it fits tightly inside, it is possible to prevent dust or water from entering the modular plug 1 or the modular socket from the connection between the cable 2 and the modular plug 1.

[0021]

As described above, according to the present invention, a hole for penetrating a cable which is made of any one of rubber and synthetic resin and which is engaged with a cable clamp of a modular plug to prevent the cable from coming off is formed. A flexible cable protection portion, a fitting portion integrally provided on the front side of the cable protection portion, fitted outside the modular plug, and fitted inside the insertion opening of the housing; The modular plug is provided integrally, and the cable plug of the modular plug has a retaining portion that elastically engages with a hole that has become a vacant space after protruding to engage with the cable. After connecting the modular plug and cable using the original method,
Since the cable protection device is fixed to the modular plug and the cable, the connection operation can be easily performed. Also, as described above, a retaining portion is provided inside the fitting portion of the cable protection device, the retaining portion is engaged with the hole of the modular plug, and the fitting portion of the cable protection device is inserted into the insertion opening of the housing. Fitting and restricting the expansion can prevent the cable protection device from detaching from the modular plug,
Therefore, a reliable connection state can be maintained.
In addition, since the behavior of the modular plug due to the bending of the cable is minimized by fitting the fitting portion of the cable protection device to the insertion opening of the housing as described above, the bending resistance of the cable can be improved. it can.

[Brief description of the drawings]

FIG. 1A is a plan view of a modular plug cable protection device according to an embodiment of the present invention, showing a state where the cable protection device is attached to a modular plug and a cable. FIG. -A section view

FIG. 2 shows the same cable protection device, and is a sectional view similar to FIG. 1 (b) in a state before being attached to a modular plug and a cable.

FIG. 3A is a plan view showing a conventional cable protection device for a modular plug, in which a cable is connected to a modular plug using the cable protection device. FIG. ) Is a sectional view taken along line BB.

FIG. 4 is a side view showing the cable protection device before the cable is connected to the modular plug.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Modular plug 2 Cable 3 Cable protection device 4 Housing 6 Cable core wire 10 hole 11 Cable clamp 16 Cable protection part 17 Fitting part 19 Insertion opening 20 Retaining part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 13/56-13/72 H01R 13/514

Claims (1)

(57) [Claims] 1. A bendable cable protector made of any one of rubber and synthetic resin and having a hole formed therein for penetrating a cable which is engaged with a cable clamp of a modular plug and is prevented from coming off. A fitting portion integrally provided on the front side of the protection portion, fitted outside the modular plug, and fitted inside the insertion opening of the housing; and the modular plug provided integrally inside the fitting portion. A cable protection device for a modular plug, comprising: a retaining portion that resiliently engages a hole that has become a vacant space after the cable clamp protrudes to engage the cable.