JPH07272777A - Cable end grounding member - Google Patents

Abstract

PURPOSE:To provide a grounding member wherein an operation can be performed from the same direction by decreasing a part protruded to the outside as a whole. CONSTITUTION:A band 6, when it is wound to the periphery of a cable end part 2, is firmly fastened by rotating a band fastening screw 12 of a fastening housing 11. To this band 6, a grounding screw 14 is fixed so as to be directed in the same direction to the band fastening screw 12. In both the band fastening screw 12 and the grounding screw 14, in the case of fastening operation an operating part, applying a screw driver or the like, faces a direction of a prescribed surface 20 opposed to each other to the cable end part 2. Further, the operating part is suppported so as to prevent it from protruding from the prescribed surface 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable terminal grounding member used for grounding a cable terminal portion with a band attached thereto.

[0002]

2. Description of the Related Art Cables and equipment to which a high voltage that is dangerous to the human body is applied have their shields grounded. Figure 2
Fig. 1 shows a side view of the connecting portion between the equipment and the cable end portion for such grounding. As shown in the figure, a pair of cable terminal portions 2 is connected to the lower surface of the device 3 from the left and right. The cable terminal portion 2 is covered with a semiconductive cover 5. The semiconductive cover 5 is made of, for example, semiconductive rubber or the like. The semiconductive cover 5 is fitted into the terminal 4 of the device 3 and electrically connected to the shield of the device 3.
On the other hand, the band 6 and the lead wire 7 are used to electrically connect the shield layers of the left and right cables 1 with low resistance. The shield layer of the cable 1 is grounded at another terminal portion (not shown).

FIG. 3 shows an exploded perspective view of the cable terminal portion and the cable terminal grounding member as described above. The cable terminal portion 2 is electrically connected to the device 3 as shown in FIG. 2 by disposing the pin 1A and the like in the center as shown in the drawing. Such a cable end portion 2 is covered with a semiconductive cover 5.
A band 6 is wound around and fixed to a predetermined portion of the semiconductive cover 5, for example, a portion of the groove 5A shown in this figure. A tightening housing 11 and a ground screw seat 13 are attached to the band 6.

FIG. 4 is an exploded perspective view of the tightening housing 11 portion. As shown in this figure, band 6
A large number of thread grooves 6B as shown in the figure are provided at one end 6A of the. Further, as shown in FIG. 3, the tightening housing 11 is provided with band tightening screws 12. As shown in FIG. 4C, the tightening housing 1
The band tightening screw 12 is inserted into the shaft hole 11A provided in No. 1 and is rotated in the direction of the arrow 18 as shown in FIG. The thread 12A of the band tightening screw 12 fits into the thread groove 6B of the band 6, and when the band tightening screw 12 is rotated in one direction, the band 6 is pulled toward the band tightening screw 12, and conversely the band tightening screw 12 is tightened. When the screw 12 is rotated in the opposite direction, one end 6A of the band 6 is pushed out toward the tip of the band tightening screw 12, and the band tightening force is weakened. With such a band tightening mechanism, as shown in FIG. 3, the band 6 is wound around and fixed to the outer periphery of the cable terminal 2.

On the other hand, the ground screw seat 1 is provided on the outer peripheral surface of the band 6.
A ground screw 14 is fixed on top of 3. A nut 15 is screwed into the ground screw 14,
The electrical connection between the lead wire 7 and the band 6 is completed by fitting the lug plate 16 compression-connected to the end of the lead wire 7 and then tightening the nut 15. Thereby, the semi-conductive cover 5 is electrically connected to the shield of the other cable via the band 6 and the lead wire 7. The same structure is adopted when the cable terminal portion is used alone and the cable terminal portion is directly grounded using a lead wire.

[0006]

However, the conventional cable terminal grounding member as described above has the following problems to be solved. When the above band is wound around the cable end and fixed, and the end of the lead wire is tightened and fixed to the belt using the nut, the part connecting the end of this lead wire is located on the side of the cable end. Overhang, which greatly affects the layout and configuration of other equipment.

For example, if the lead wire 7 is fixed to the side surface of the cable terminal portion 2 in the state shown in FIG.
The ground screw 14 protrudes from the side surface of the cable end portion 2,
Interfere with other work. It is also conceivable to rotate the position of the ground screw 14 by 90 degrees in order to prevent the ground screw 14 connecting the ground wire from protruding. However, this time, it is impossible to remove and connect the grounding wire as it is. Therefore, it is necessary to redirect the position of the grounding screw to a direction that facilitates the work. This work is also complicated.

The present invention has been made in view of the above points, and provides a cable terminal grounding member having a structure that facilitates grounding work and prevents terminals and the like from protruding to the side of the cable terminal portion. The purpose is.

[0009]

A cable terminal grounding member of the present invention comprises a band which is fixed by being wound around an outer periphery of a semiconductive cover surrounding a cable terminal portion and which is electrically connected to a grounding lead wire, This band is, on the outer peripheral surface of the band, a band tightening screw whose rotation axis is oriented in the tangential direction of the band, and similarly on the outer peripheral surface of the band,
The band tightening screw supports a lead wire connecting screw whose rotation axis is oriented substantially in the same direction, and both the band tightening screw and the lead wire connecting screw have a predetermined surface whose operating portion faces the cable terminal portion. Is supported on the outer peripheral surface of the band in a state in which the operation portion does not protrude from the predetermined surface of the band.

[0010]

When the band is wound around the outer circumference of the cable end, it is tightly tightened by rotating the band tightening screw of the tightening housing. A ground screw is fixed to the band so as to face the same direction as the tightening screw. Further, the band tightening screw and the ground screw each have an operating portion for applying a driver or the like directed toward a predetermined surface facing the cable end portion during the tightening operation. Thereby, the operation can be performed from the same direction. Moreover, the operation portion is supported so as not to project from the predetermined surface. Therefore, it is possible to provide a cable terminal grounding member having a small number of protruding parts as a whole.

[0011]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a cable terminal grounding member of the present invention. As shown in the figure, the cable end portion 2 is covered with a semiconductive cover 5 as in the conventional case. The semi-conductive cover is made of semi-conductive rubber or the like. Groove 5 formed in a predetermined portion of this semiconductive cover 5
A band 6 is wound around and fixed to A in order to ground the semiconductive cover 5. The band 6 is provided with the tightening housing 11 as described above, and the tightening force can be increased or decreased by rotating the band tightening screw 12. That is, when the band tightening screw 12 is rotated in the direction of the arrow 18, the tightening force of the band 6 is increased and the contact pressure between the band 6 and the semiconductive cover 5 is increased. The configuration so far is the same as that of the conventional cable terminal grounding member.

Here, in the present invention, a ground screw seat 21 as shown in the drawing is further fixed to the side surface of the band 6, and one end of the ground screw 14 is fixed to this by a welding or the like. Unlike the conventional ground screw seat 21, the ground screw 14 fixes the ground screw 14 so that the rotating shaft faces in substantially the same direction as the band tightening screw 12. In this example, the ground screw 14 itself is fixed to the ground screw seat 21 and does not rotate, but the nut 15 is rotated about its rotation axis to perform tightening.

Further, in the present invention, the ground screw seat 21
Is fixed to a portion close to the side opposite to the housing 11, so that the tip of the ground screw 14 does not protrude outside from a predetermined surface 20 virtually set to the side of the cable end portion. . A lug plate 16 is connected to the end portion of the lead wire 7 by compression or the like.
Is fitted into the ground screw 14 and tightened by a nut 15 for electrical connection. Such a configuration is similar to the conventional one.

FIG. 5 shows a more concrete drawing of the cable terminal grounding member of the present invention. FIG. 5A is a plan view, FIG. 5B is an enlarged side view of the housing portion, and FIG. The top view at the time of equipping with the part 2 is shown. Figure 5 (a)
As shown in FIG. 5, the tightening housing 11, the band tightening screw 12, the ground screw seat 21, and the ground screw 14 are all operated from the direction of arrow 22 using a screwdriver or a nut driver to perform tightening and lead wire connection. To do. At this time, in the present invention, the predetermined surface 20 shown in the figure is set to a portion that is substantially in contact with the band 6, and the ground screw 14
The respective parts including the above are arranged so as not to stick out from the predetermined surface 20. As a result, there is almost no protrusion on the side surface of the cable terminal portion, and the arrangement of peripheral devices is not affected.

Moreover, as shown in (c), the band tightening screw 12 and the nut 15 can be easily operated from the side of the predetermined surface 20 without moving the band 6, and can be attached or detached. The workability of the case is very good. The present invention is not limited to the above embodiments. The mechanism itself for tightening the band 6 may be replaced with various mechanisms for winding and fixing this kind of conductive metal band around the outer peripheral surface of the cable end portion.

Further, the ground screw seat 21, the ground screw, etc. can be modified in the following manner, for example. Figure 6
It is a modification perspective view of a ground screw seat etc. In the modified example of (a), a part of the band 6 is bent and a ground screw seat 6C is provided by a part of the band 6. The head 14A of the ground screw 14 is sandwiched between the ground screw seats 6C and fixed by welding or the like.

In (b), a part of the band 6 is bent to form a ground screw seat 6D, and the ground screw 14 is fixed thereto, and the head 14A of the ground screw has a ground screw seat 6D.
It is welded and fixed to D. Further, in the embodiment of (c), the ground screw seat 21 is prepared in addition to the band 6, and both are welded to the band 6. A part of the ground screw seat 21 is bent so as to surround the hexagonal head 14B of the ground screw 14 as shown in the figure, and the head 14 of the ground screw 14 is bent.
The structure is such that B does not rotate. This way
By fitting the head of the ground screw 14 into the ground screw seat 21, the ground screw 14 itself can be easily fixed so as not to rotate without welding.

The semi-conductive cover 5 may be made of semi-conductive plastic as well as semi-conductive rubber. That is,
Any cover may be used as long as it has a structure in which the band 6 is attached and grounding is required.
Further, the method of connecting and attaching the lead wire to the lead wire connecting screw may be replaced with various well-known configurations for connecting the end of the electric wire. Of course, the cable terminal section may be used for connection with a device, or may be directly connected to another cable terminal section.

[0019]

The cable terminal grounding member of the present invention described above has a band tightening screw whose rotation axis is oriented in the tangential direction of the band, and a shaft on the outer peripheral surface of the band in the same direction as the band tightening screw. The lead wire connecting screws are provided, and these operating parts are directed toward an appropriate predetermined surface that faces the cable end portion, and the operating portion is set so as not to protrude from this predetermined surface. Tightening screws and lead wire connecting screws do not pop out and do not interfere with the arrangement of peripheral devices.

Further, since the operating parts are oriented in the same direction, the band tightening screw and the lead wire connecting screw part can be operated from one side at the same time, and the workability is good. Therefore, if the predetermined surface is properly selected, the ground wire can be easily attached and detached without loosening or rotating the band itself.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a cable terminal grounding member of the present invention.

FIG. 2 is a side view of a connecting portion between a device and a cable terminal portion suitable for adopting the cable terminal grounding member of the present invention.

FIG. 3 is an exploded perspective view of a conventional cable terminal grounding member.

FIG. 4 is an exploded perspective view of the tightening housing part.

5A and 5B are drawings of each part of the cable terminal grounding member of the present invention, in which FIG. 5A is a plan view, FIG. 5B is a side view of a band tightening screw portion, and FIG. It is a top view at the time of attaching a cable terminal grounding member.

FIG. 6 is a perspective view of a modification of the main part of the cable terminal grounding member of the present invention.

[Explanation of symbols]

 1 cable 2 cable end 5 semi-conductive cover 6 band 7 lead wire 11 tightening housing 12 band tightening screw 14 ground screw 20 predetermined surface 21 ground screw seat

Claims (1)

[Claims] 1. A band which is wound around and fixed to an outer periphery of a semi-conductive cover surrounding a cable end portion and is electrically connected to a grounding lead wire, the band being tangential to the band on the outer peripheral surface of the band. A band tightening screw with a rotating shaft oriented in a direction, and a lead wire connecting screw having a rotating shaft oriented in substantially the same direction as the band tightening screw on the outer peripheral surface of the band. Any of the wire connecting screws is characterized in that the operation portion is directed to a predetermined surface facing the cable terminal portion, and is supported on the outer peripheral surface of the band without protruding the operation portion from the predetermined surface. Cable terminal grounding member.