JPH0664371U - Cable sheath grounding device - Google Patents

Abstract

(57) [Summary] [Structure] An elastic metal sheath connecting portion 10a formed by spirally winding a plate-shaped material and a grounded fixing member R.
Elastic mounting portion 10 detachably attached to the
The present invention relates to a cable sheath grounding device 10 composed of b. [Effect] The cable sheath grounding device can be securely attached to the cable sheath grounding device only by inserting the metal sheath of the cable into the metal sheath connecting portion of the spirally wound cable sheath grounding device. The work efficiency of attaching the metal sheath to the can is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cable sheath grounding device for grounding a cable such as a power line or a communication line.

[0002]

[Prior art]

 Conventionally, a cable sheath grounding device has been known in which the outer sheath of a cable is peeled off and a metal sheath is exposed at the same time, and a ground wire is connected to the exposed metal sheath by soldering or the like to ground the metal sheath. There is.

[0003]

[Problems to be solved by the device]

 As shown in FIG. 4 which is a perspective view of a conventional cable sheath grounding device, a general structure of a cable C such as a power line or a communication line is, in order from the outside, a jacket J, a metal sheath S, an insulating material. It is composed of I and the core wire W.

In order to connect such a cable C to a device or the like, the outer jacket J is peeled off and the core wire W is led out to be connected to the device or the like. The sheath S is also exposed at the same time, and the ground wire E is connected to the exposed metal sheath S by soldering to ground the metal sheath S. The cable C is attached to the fixing member 3 by gripping the jacket J portion of the cable C with an appropriate cable retainer 1 and fixing the cable retainer 1 to the fixing member 3 with an appropriate fastener such as a screw 2. Has been.

As described above, conventionally, since the metal sheath S is grounded by connecting the ground wire E to the exposed metal sheath S by soldering, the soldering work takes time, which results in workability. There was a problem that the workability worsened and the workability was further deteriorated when working in high places. Further, when the ground wire E is connected to the metal sheath S by soldering, the workability is further deteriorated because the ground wire E cannot be easily connected to the metal sheath S depending on the material of the metal sheath S. become.

An object of the present invention is to solve the problems of the conventional cable sheath grounding device as described above, and to work the metal sheath S exposed by peeling off the jacket J surely and easily. To provide an excellent cable sheath grounding device.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a cable sheath grounding device which is detachably attached to an elastic metal sheath connecting portion formed by spirally winding a plate-shaped material and a grounded fixing member. It is composed of an elastic mounting part.

Hereinafter, the present invention will be described based on embodiments, but the present invention is not limited to the embodiments without departing from the gist of the present invention. In FIG. 1, which is a perspective view of the cable sheath grounding device of the present invention, reference numeral 10 denotes a metal sheath connecting portion forming a kind of spiral spring, which is formed by spirally winding a conductive plate material a predetermined number of times. 10A and a mounting portion 10b formed of a conductive material, which is a cable sheath grounding device, wherein the innermost spiral portion 11 of the metal sheath connecting portion 10a has a clip portion 12 into which the metal sheath S of the cable C is inserted. Is formed. When inserting the metal sheath S into the clip portion 12, the diameter of the innermost spiral portion 11 of the spiral metal sheath connecting portion 10a is expanded to insert the metal sheath S. After inserting the metal sheath S, Since the diameter of the innermost spiral portion 11 of the metal sheath connecting portion 10a is reduced by its elasticity, the innermost spiral portion 11 of the metal sheath connecting portion 10a is pressed against the surface of the metal sheath S, and the clip portion 12 is formed. The metal sheath S is firmly held. The number of spiral windings of the metal sheath connecting portion 10a is appropriately set according to the diameter or material of the metal sheath S to be inserted.

The mounting portion 10b formed of a conductive material is for mounting the cable sheath grounding device 10 to a rail member shown as an example of a fixing member described later, and the mounting portion 10b is substantially It is composed of a rectangular flat portion 13 and elastic curved portions 14 and 14 'which are curved in a substantially semi-cylindrical shape at both ends of the flat portion 13. The metal sheath connecting portion 10a and the attaching portion 10b are preferably formed integrally, but the flat portion 13 and the curved portions 14 and 14 'are formed separately, and an appropriate fitting means is formed. It is also possible to combine by.

The end portion 11 ″ of the outermost spiral portion 11 ′ of the spiral-shaped metal sheath connection portion 10 a has a flat portion 13 of the mounting portion 10 b opposite to the side where the curved portions 14, 14 ′ are arranged. It is fixed along one end 13 'on one side, and will be described later on both ends of the end 11 "of the outermost spiral portion 11' of the spiral metal sheath connecting portion 10a. Notches 15 and 15 'having a height corresponding to the thickness of the rail member are provided.

Next, it is a front view showing a state in which the cable sheath grounding device 10 to which the cable C is attached and the cable sheath grounding device 10 is attached to the rail member is taken along line XX in FIGS. 2 and 2. The attachment of the metal sheath S to the clip portion 12 and the attachment of the cable sheath grounding device 10 to the rail member will be described with reference to FIG. 3, which is a sectional view taken along the line.

R is a rail member as an example of a fixing member formed of a conductive material, and an upper portion R ′ of the rail member R is along the longitudinal direction of the rail member R leaving the edges 16 and 16 ′. It has the opening 17 opened. The width B1 of the opening 17 of the rail member R is configured to be narrower than the interval B2 between the outer surfaces of the curved portions 14, 14 'of the mounting portion 10b of the cable sheath grounding device 10, and the curved portions 14, 14' are When inserting into the opening 17 of the rail member R, the elasticity of the curved portions 14, 14 'reduces to the width B1 of the opening 17 of the rail member R, and the curved portions 14, 14' are inserted into the rail. After being inserted into the opening 17 of the member R, the elasticity thereof expands to the distance B2 between the outer surfaces of the curved portions 14 and 14 ', and from the opening 17 of the rail member R to the mounting portion 10b of the cable sheath grounding device 10. Is configured so that it does not come off. Further, as shown in FIG. 2, the rail member R is grounded.

As described above, the metal sheath S is inserted into the clip portion 12 formed by the innermost spiral portion 11 of the spiral metal sheath connection portion 10a, and is the innermost portion of the metal sheath connection portion 10a. The surface of the metal sheath S is pressed against the spiral portion 11 and the clip portion 12 firmly holds the metal sheath S. As described above, the curved portions 14 and 14 'of the mounting portion 10b of the cable sheath assuring device 10 that holds the metal sheath S firmly in the clip portion 12 are inserted into the openings 17 of the rail member R as described above. Inserting against the resilience of the curved portions 14, 14 ', the cable sheath grounding device 10 is attached to the rail member R as shown in FIG.

Further, at both ends of the end portion 11 ″ of the outermost spiral portion 11 ′ of the spiral metal sheath connecting portion 10 a, a notch portion 15 having a height corresponding to substantially the thickness of the rail member R, respectively. , 15 'are provided so that the distance between the outer surfaces of the curved portions 14, 14' of the mounting portion 10b inserted into the opening 17 of the rail member R can be completely expanded to the original distance B2. Therefore, the attachment portion 10b of the cable sheath grounding device 10 can be securely attached to the opening 17 of the rail member R. In addition, in FIG. Is an insulating cover having a substantially U-shaped cross section attached so as to cover the outer surface of the.

In the above embodiment, the fixing member of the cable sheath grounding device 10 is shown as the rail member R having the opening 17, but the mounting portion 10b of the cable sheath grounding device 10 is inserted and attachable. The rail member R is not particularly limited as long as it has the portion 17.

[0016]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

Since the metal sheath can be securely attached to the cable sheath grounding device only by inserting the metal sheath of the cable into the metal sheath connecting portion of the spirally wound cable sheath grounding device, the cable sheath grounding device can be securely attached. The work efficiency of attaching the metal sheath to the grounding device is improved.

Since the metal sheath connection part of the cable sheath grounding device has a spiral structure, the pressure contact force acts evenly on the surface of the metal sheath, so that the metal sheath connection part of the cable sheath grounding device has a metal sheath. Can be reliably gripped.

Since the metal sheath connecting portion of the cable sheath grounding device has the spiral structure, it can be applied to the metal sheaths of cables having various diameters.

Since the rail member is grounded, the metal sheath of the cable can be grounded at the same time simply by attaching the mounting portion of the cable sheath grounding device to the rail member.

Since the cable sheath grounding device is detachably attached to the opening of the rail member by the elasticity of the mounting portion and the cable sheath grounding device can be moved along the rail member, the cable sheath grounding device can be placed at the most suitable position. A cable sheath grounding device can be installed.

[Brief description of drawings]

FIG. 1 is a perspective view of a cable sheath grounding device of the present invention.

FIG. 2 is a front view showing a cable sheath grounding device to which a cable is attached and a state in which the cable sheath grounding device is attached to a rail member.

3 is a cross-sectional view taken along line XX in FIG.

FIG. 4 is a perspective view of a conventional cable sheath grounding device.

[Explanation of symbols]

 C ・ ・ ・ ・ Cable I ・ ・ ・ ・ ・ ・ Insulation material J ・ ・ ・ ・ ・ ・ ・ ・ Sheath S ・ ・ ・ ・ Metal sheath W ・ ・ ・ ・ Core wire R ・ ・ ・ ・ ・・ Rail member 10 ・ ・ ・ Cable sheath grounding device 10a ・ ・ ・ ・ Metal sheath connecting part 10b ・ ・ ・ ・ Mounting part 12 ・ ・ ・ Clip part

Claims (2)

[Scope of utility model registration request] 1. An elastic metal sheath connecting portion formed by spirally winding a plate-shaped material and an elastic mounting portion detachably attached to a grounded fixing member. Cable sheath grounding device. 2. The cable sheath grounding device according to claim 1, further comprising a mounting portion that is detachably attached to a rail member having an opening that is open along the longitudinal direction.