JPH04133355U - Connection structure of electric wire connection fittings - Google Patents

Abstract

(57) [Summary] [Purpose] To connect the clamp for holding the wire and the socket for connecting the branch line, the leg of the clamp 1 and the bifurcated part of the socket 2 are fixed with the through bolt 3, but the nut must be tightened. When tightening, it is inevitable that the bolts will rotate together. To create a structure that does not cause co-rotation no matter which side a bolt is inserted into a through hole. [Structure] Projections 2b are provided at both outer openings of the bifurcated portion, and the head of the insertion bolt is prevented from rotating by the projections. A washer 4 is inserted into the leg of the bolt avoiding other protrusions, and its thickness is made to correspond to the height of the protrusion.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a joint structure of wire connecting fittings used to connect wires together. .

0002

[Conventional technology]

For example, if you want to take out a branch line from one of the connecting fittings (clamps) that hold the electric wire, Insert the bifurcated end of the other connection fitting (jumper socket) into the leg provided on the clamp. Align and connect both with a through bolt. At that time, when you tighten the nut, the bolt will rotate together. do. This work is carried out at a high place near the top of the steel tower, and must be done with one hand at all times. In order to prevent this co-rotation, a protrusion is provided near the opening on one side of the bifurcated end to prevent the inserted bolt from rotating. This prevents the root head from rotating.

0003 However, with this structure, the direction of bolt insertion is limited to only from the side with the protrusions. For workers who lean over from the top of the steel tower to tighten nuts, it is necessary to insert them from the opposite direction. Even if it would be easier to work and convenient for periodic inspections, it is not possible. Kan A structure that allows selective insertion from either the left or right side of the through hole has been desired.

0004

[Means of problem solving]

A pair of connection fittings that connect each electric wire is equipped with an engaging part, and when connected, the through-holes on both sides A protrusion that can be engaged with the bolt head is provided near the opening of the through-bolt hole. bolt and nut When tightening, insert a washer with a thickness that satisfies the above protrusion height on the nut side into the bolt leg. and then tighten the nut through this.

[0005]

【Example】

Figures 1 to 3 show a retaining clamp and a jumper for retaining the wire to the tower. This is the case with jumper sockets for connecting wires. One set of connection fittings has a retaining clip on one side. A lamp 1 is connected by providing a jumper socket 2 on the other side. The retaining clamp 1 is An electric wire can be inserted and crimped at one end, and the handle 1a at the other end can be secured to the steel tower via an insulator. It will be done. The clamp 1 also has a leg side 1b at the bottom of one end, which serves as an engaging portion. Jean The socket 2 has a bifurcated part 2a at one end into which the leg side 1b can be inserted, and the other Department. The other end is capable of inserting and crimping a jumper wire. Fork part 2a and legs An insertion hole for a through-bolt 3 is bored in the side 1b, and a hole is provided at each side exit of the bifurcated part. A protrusion 2b is provided that engages with the bolt head and prevents it from rotating. Washer 4 connects protrusion 2b Has an external shape that allows it to be inserted into the leg of the bolt 3, and the thickness is equal to the height of the bolt 3? Or slightly larger than that.

[0006] 4 and 5 show other embodiments. A pair of opposing connection sleeves 5 are each engaged at one end. The part 5a is provided with a sleeve 5b at the other end into which an electric wire can be inserted and crimped, and each engaging part is flat. Join the surfaces by overlapping them. An insertion hole for the through bolt 3 is bored in the flat surface of each engagement part. Near the exits on both sides of the joint, there is a protrusion 5 that engages with the bolt head to prevent rotation. c is provided. The washer 4 is an outer part that can be inserted into the leg of the bolt 3 avoiding the protrusion 2b. It has the same shape and thickness as in the previous embodiment. Note that the number of protrusions is not limited to one; There may also be several pieces that engage each side of the head.

[0007] Therefore, in the retaining clamp, the leg portion of the bolt 3 passing through the bifurcated portion 2a and the leg side 1b is When the washer 4 is fitted and the nut is tightened, the bolt head will be prevented from rotating by the protrusion 2b. , the nut can be operated with a spanner without being hindered by the protrusions. Its action is bolt It does not matter whether the insertion direction is left or right. A similar operation is performed for connection sleeve 5. Useful.

[0008] The connecting fitting also includes a T-shaped connecting sleeve (not shown), whose center leg Bolt other fittings to the At the exits on both sides of the through bolt hole in each joint state A hexagonal notch is provided to enable the same bolt tightening as in the above embodiment.

[0009]

【effect】

The through bolt that is inserted into the engaging part of the connection fitting will not be inserted from either the left or right side. Tightening the bolts will not cause the bolts to rotate.

0010

[Brief explanation of drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is a rear view of the present invention when the nut is removed.

FIG. 4 is a front view showing another embodiment of the present invention.

FIG. 5 is a partially sectional side view of the present invention.

FIG. 6 is a front view of a conventional example.

[0011]

[Explanation of symbols]

1 Retaining clamp 2 jumper socket 2a Forked part 2b Projection 3 bolts 4 Washer 5 Connection sleeve 5a Engagement part 5b sleeve 5c protrusion

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[Procedural amendment]

[Submission date] June 11, 1992

[Procedural amendment 1]

[Name of document to be amended] Specification

[Name of item to be corrected] Brief explanation of the drawing

[Correction method] Change

[Correction details]

[Brief explanation of drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is a rear view of the present invention when the nut is removed.

FIG. 4 is a front view showing another embodiment of the present invention.

FIG. 5 is a partially sectional side view of the present invention.

Claims (3)

[Scope of utility model registration request] Claim 1: A pair of connecting fittings provided on each electric wire to connect the wires with bolts is provided with an engaging portion, and a protrusion that can be engaged with the bolt head near the opening of the through-bolt hole on both sides in the connected state. A connecting structure for electric wire connecting fittings in which a nut of a bolt leg is tightened through a washer with a thickness corresponding to the height of the protrusion on one side. Claim 2: In a set of connecting fittings, one of the connecting fittings is a clamp having a leg at one end or the center, and the other connecting fitting is a socket having a bifurcated portion that clamps the leg. 1. The connection structure of the electric wire connection fitting according to 1. 3. The connecting structure of electric wire connecting fittings according to claim 1, wherein the respective engaging portions of the pair of connecting fittings are overlapped.