JPH0112502Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a wire gripping part such as a spacer or a damper, that is, a wire clamp, and particularly relates to a boltless gripping part that uses spring force as a wire gripping force.

As a boltless gripping part that uses spring force as a gripping force, one end of the clamping body is hinged to the clamp body, and the other end of the clamping body is displaced toward the clamp body by the spring force, and the electric wire is inserted between the clamp body and the clamping body. A U-shaped swing-type hooking arm that is used for clamping and gripping, and has a coil spring mounted around a bolt installed in the clamp body, the coil spring being compressed, and one end pivoted to the clamping body. is engaged with the outer end of the compressed spring, removing the compression force of the coil spring,
There is a type of wire gripping unit that applies the force of a coil spring to a clamping body through a swing-type hook arm to displace the clamping body.

What is shown in FIG. 1 is an example of the above-mentioned type of wire gripping part that the applicant previously applied for, in which one end 3a is screwed onto one end 1a of the clamp body 1 by a hinge pin 2. The clamping body 3 sandwiches the electric wire W between the receiving part 1b of the clamp body and the receiving part 3b of the clamping body 3, and pulls the other end 3c of the clamping body 3 to the other end 1c of the clamp body 1 with a spring to tighten the electric wire. grasp.
A swing-type hook arm 5 whose one end 5a is pivotally connected to the other end 3c of the tightening body 3 with a pin 4, and a coil spring 9 that applies a spring force (repulsion force) to the hook arm 5 are attached to the swing-type hook arm 5. The hook arm 5 and the coil spring are attached to each other.

In a U shape as shown in Figure 2B, both legs 5
As shown in FIG. 1, one end 5a of c, 5c is pivotally connected to the clamping body 3 by a pin 4, and the swing-type hooking arm 5 is pivotable toward the clamp body as shown by arrow a. , the bridging portion 5b at the other end can be engaged with and disengaged from a washer 8 attached by a nut 7 to a bolt 6 implanted in the other end 1c of the clamp body 1.

As shown in FIG. 1, the bolt 6 has a threaded portion 6a at one end and an enlarged diameter portion 6b following this, and a nut 7 can be screwed into the threaded portion 6c at the other end. A coil spring 9 is attached to the bolt 6 between the enlarged diameter portion 6b and a washer 8 attached to the inside of the nut 7. After attaching the coil spring 9, washer 8, and nut 7, the bolt 6 is implanted into the other end 1c of the clamp body 1 by means of a threaded portion 6a, as shown in FIG. Since FIG. 1 shows an embodiment of the spacer gripping section, the clamp body 1 is formed integrally with the spacer connecting section 1d.

The swing-type hook arm 5 has a U-shaped bridging portion 5b.
can engage the washer 8 but not hit the nut 7. As can be seen in FIG. It is cut by a notch 11 wide enough to allow the nut to pass through. Furthermore, the bridging portion 5b has raised edges 13 and 14, and only a box type spanner can be used to rotate the nut 7, and the box type spanner also has a center 12 of the circular hole 10 that is connected to the nut 7 and the screw. The shape and dimensions are such that it cannot be engaged with the nut 7 unless it is located at a position that substantially coincides with the center of the portion 6c. That is, this is shaped so that the nut 7 cannot be rotated unless the bridging portion 5b engages with the washer 8 at the normal position.

Next, the action will be explained. First, install the coil spring 9 and washer 8 on the bolt 6, and then tighten the nut 7 on the threaded part 6c.
The coil spring 9 is compressed between the washer 8 and the enlarged diameter portion 6b, and the coil spring 9 is compressed until a repulsive force is generated to obtain the required tightening force. Attach it to the main body 1 and insert the bolt 6. After the bolt 6 is installed in the clamp body 1, the hinge is opened and the electric wire W is received in the receiving parts 1b and 3b, and then the swing-type hooking arm 5
When the bridging portion 5b of the hook arm 5 is engaged with the washer 8 and the nut is pulled out, the repulsive force of the coil spring 9 acts on the hook arm via the washer, and the tightening body 3 The other end 3c is attracted to the clamp body and can grip the wire with a predetermined force.

In the above electric wire gripping part, the raised edges 13 and 14 of the swing-type hooking arm have a certain effect that only a box spanner can be used to rotate the nut 7, but they are protrusions. As a result, corona discharge is generated, and the manufacturing process becomes more difficult, resulting in higher costs. In addition, the nut 7 is no longer needed after the wire gripping action is entrusted to the spring and is removed, but a normal nut has the disadvantage that if it is installed at a high place, it is difficult to see whether it has come off or not from the ground. be. Furthermore, the hook arm 5 is
Until the force of the spring 9 is applied, it tends to slip off the washer 8, making it inconvenient to handle when working at heights.

This idea was made in view of the above,
It is an object of the present invention to provide an improved wire gripping part that eliminates the above-mentioned drawbacks.

For the above purpose, in the electric wire gripping part of this invention, the hooking arm does not have a raised edge, a special nut is used, and the hooking arm is clamped at the position where it engages with the washer. It is characterized by comprising an elastic retaining pin that engages with the main body.

The invention will be explained below with reference to the illustrated embodiments. As shown in FIG. 3, the electric wire gripping portion of this invention is the same as that shown in FIG. 1 except for the above, so equivalent members are given the same reference numerals as in FIG. 1 and their explanation will be omitted. In this design, there are 15 swing-type hook arms.
has no raised edges. As shown in FIG. 5, the nut 17 has a long head 17b in addition to a hexagonal portion 17a, and a knurled hole 17c is cut at the end of the head.

Further, as shown in FIG. 4, the swing-type hooking arm 15 is provided with elastic retaining pins 18 made of rubber, etc. on the inside of both legs 15c, and this elastic retaining pin 18 is such that the hooking arm 15 has a U-shape. When the bridging portion 15b is pivoted to engage with the washer 8, it engages with a groove 19 in the other end 1c of the clamp body 1. Therefore, as shown in FIG. 6, the stop pin 18 has a head 18a and a neck 18b.
8b is attached to both legs 15c, the long handle 18c is broken off and the head 18a protrudes inward, and when the swing-type hooking arm is pivoted, the groove 19 in the clamp body (Fig. 4) , and the legs 15c are held in that position by friction, that is, in the position where the pivoting movement has been completed.

As described above, the nut 17 has a long head 17b and a knurling 17c at the end of the head, so a wrench is attached to the hexagonal part to loosen it, and the spring 9
After the force has been applied to the hook arm 15 through the washer 8, the nut can be removed by hand by rotating the nut 17c, which makes the work extremely easy. Further, the long head of the nut is convenient because it can be easily identified from the ground whether the nut 17 is attached to the clamp body 1 located at a high position on the steel tower. In addition, the elastic retaining pin 18 of the swing-type hooking arm engages with the clamp body to hold the hooking arm, so when working at high places, it is not necessary to hold down the hooking arm after pivoting. This has the advantage of making the work easier.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an example of the structure of a conventional electric wire gripping part with a part of the clamp main body cut away;
Figure 2C is a side view showing a conventional hooking arm,
A plan view, a front view, and FIG. 3 are side views similar to FIG. 1 showing an embodiment of the wire gripping part of this invention. FIG. FIG. 5 is a side view showing a partially broken state of the nut, and FIG. 6 is a side view of the elastic retaining pin. 1... Clamp body, 2... Hinge pin, 3...
Tightening body, 5... Swing type hook arm, 6... Bolt, 7... Nut, 8... Washer, 9... Coil spring, 15... Swing type hook arm, 17... Nut, 17a... Hexagonal part, 17b...Head, 1
7c...Loretsu, 18...Elastic retaining pin, 19
... Structure.

Claims (1)

[Scope of utility model registration request] One end of the clamping body is hinged to the clamp body, and the other end of the clamping body is displaced toward the clamp body by spring force, and the wire gripping part grips the electric wire between the clamp body and the clamping body, and the one end has a threaded part. and an enlarged diameter portion following the threaded portion, the bolt is installed in the clamp body by the threaded portion, and the bolt is inserted between the enlarged diameter portion and a washer attached near the other end of the bolt. a coil spring fitted around the bolt; a nut screwed onto the threaded portion of the other end of the bolt to compress the coil spring via the washer; and one end pivotally connected to the other end of the tightening body. In the wire gripping part, the other end of which is provided with a U-shaped swing-type hooking arm that can be engaged with and detached from the washer, the nut is a special nut having a lore that can be turned by hand, and the hooking arm An electric wire gripping portion comprising an elastic retaining pin that engages with the clamp body at a position where it engages with the washer.