JPH0127263Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention relates to a protective cover for a branching device provided on an insulated wire and used for connecting a branch line or a grounding line.

(b) Conventional technology Insulated wires were insulated by stripping the insulation coating of the insulated wire each time, connecting a branch wire or grounding wire, and then wrapping the wire with tape. .

However, the above-mentioned connection method of stripping off the covering of the required part of the electric wire and connecting branch lines or connecting lines as necessary at the site is not desirable for the safety of the electric line, so recently construction of distribution lines has been At the same time, it is desired to provide a branching device in advance at a predetermined portion of the electric wire, and to be able to connect a branch line or a connecting line to this branching device as necessary.

From this point of view, the applicant's
A branching device as shown in Japanese Patent No. 18685 was proposed.

As particularly shown in FIG. 4, this branching device has an opening 61 on one side and a C-shaped cross section so that it can be easily attached at any location on the electric wire 60 (FIG. 5). A connecting portion 63 forming a wire groove 62, and a connecting portion 6 extending laterally (diagonally downward in the illustrated example) from approximately the center of this connecting portion.
4. This branching device A is made of metal and can be fixed to the wire by inserting a portion 65 of the wire with the insulation coating removed into the wire groove 62 and caulking the joint portion 63. The connecting portion 64 has a threaded hole 66 into which a threaded portion of a ground wire or a branch wire is screwed.

To attach such a branching device to a wire, the wire is accommodated in the wire groove 62 through the opening 61 of the joint 63, and then the joint 63 is caulked with a compression tool or the like, and thereby fixed. This is done by

The branching device A fixed to the electric wire as described above is connected to the protective member C and the tape 67 as shown in FIG.
Insulation treatment is performed by.

That is, the protection member C is connected to the connecting portion 6 of the branching device A.
4, and a flap part 69 extending above the lower part and adapted to be wrapped around the connecting part 63 of the branching device. After wrapping the flap part 69 around the joint part 63 as shown in FIG.
7, the branching device is insulated.

The bottom opening 75 of the protective element must be open, since it is later necessary to connect the connection line or branch line to the connection 64 of the branching device A through this bottom opening. However, if this bottom opening is left open, there is a high risk of electric shock to the worker, so a closing cap D is provided as shown in Figure 5 to close the bottom opening of the protective member. It is necessary to close the cap so that it can be opened, and to keep the bottom opening closed by the same means as the cap D even when the branch line is connected.

This closing cap D consists of a closing part 71 made of an electrically insulating material for closing the bottom opening of the protective member, and a shaft-shaped part 70 that passes through approximately the center of the closing part and is fixed to this closing part. , the upper end of this shaft-like part has a threaded part 7 that is screwed into the threaded hole of the connecting part 64.
2 is formed, and a nut portion 73 for rotating the shaft portion is formed at the lower end thereof. Therefore, until a grounding wire or a branch line is attached to the connecting part 64 of the branching device, the closing cap is attached to the branching device by screwing the threaded portion 72 of the closing cap into the screw hole of the connecting portion, and the protective cover is closed. The bottom opening of the cap is closed, and the closing cap can be removed by loosening the threaded portion 72 when attaching a grounding wire or the like.

(c) Problems with the Prior Art As mentioned above, the protective cover of the prior art requires a separate closing member such as a closing cap to close the bottom opening, and this closing cap also includes a branching device. Manufacturing is complicated because it is necessary to form a threaded portion that is screwed into the threaded hole of the connection portion. Further, such a separate closing member must be attached to the branching device before attaching the grounding wire, etc., and must be removed later when attaching the grounding wire, etc., and is therefore complicated to use.

(d) Purpose of the invention The purpose of the invention is to overcome the problems of the prior art as described above, and to make it possible to open the bottom opening without using a separate member, that is, without attaching or removing a separate member as necessary. It is an object of the present invention to provide a protective cover adapted to be closed.

(e) Structure of the invention The protective cover of the invention has an upper housing part that surrounds and is connected to the branch connection part, and a lower housing part that extends downward from the upper housing part and has a bottom opening. The bottom opening of the lower storage part is releasably closed by a plurality of flexible tongue-shaped pieces extending from a peripheral edge near the bottom of the lower storage part. have.

(f) Embodiments Next, embodiments of the protective cover of the present invention will be described with reference to the drawings.

Referring to FIG. 1, a protective cover 1 of the present invention is shown with its central part broken, and inside the protective cover there is a branch connection formed by an electric wire 30 and a branch device 40. is accommodated.

The electric wire 30 includes a core wire 31 which is a conductor, and a coating 32 provided around the core wire to electrically insulate the core wire.
It consists of. Further, the branching device 40 has a T-shape similar to that of the prior art described above, and includes a coupling portion 41 that accommodates the core wire 31 inside, and a connecting portion 42 extending downward from the coupling portion.
As shown by the broken line in FIG. 1, the connecting portion 42 is formed with a connecting hole 43 for accommodating and fixing the tip of the branch line or connecting line.

As shown in FIG. 2, the protective cover 1 is formed by connecting a pair of left and right cover members 2 and 3 in a hinged manner at a connecting portion 9 provided at the top of these members. The cover members 2, 3 have horizontal receiving portions 4, 5 which define horizontal receiving portions with an approximately circular cross-section for receiving the coupling portions 41 of the branching device 1, and vertical receiving portions 4, 5 for accommodating the connecting portions 42 of the branching device. It has vertical receiving parts 6, 7 defining a receiving part and lower receiving parts 10, 11 defining a lower receiving part for receiving the upper part of the branch line or the connecting line. Horizontal storage part 4,
5, vertical storage parts 6, 7, and lower storage part 1
0 and 11 to strengthen the connection between these parts and to lock both cover members 2 and 3 in a closed state when the protective cover is attached to the branch connection part. Brackets 12, 13 are provided. Accordingly, the bracket 13 is provided with projections (not shown) projecting towards the bracket 12, while the bracket 12 has recesses (not shown) for accommodating corresponding ones of these projections. A fitting portion 12 is provided, and each pair of protrusions and fitting portion 12 fit into each other to form a locking portion that holds the cover members 2 and 3 in the closed state shown in FIG. Form.

The inner diameter of the horizontal inner portion defined by the horizontal receiving portions 4 and 5 is approximately equal to the outer diameter of the covered wire;
In addition, both ends 15, 1 of each horizontal storage part
6, 17, and 18 are formed so that the diameter decreases toward the tip. Therefore, when the protective cover is attached to the branch connection and closed, the central part of the horizontal receiving part engages around the coupling part 41 of the branch device, while the tips of its two ends 15, 16, 17, 18 The protective cover is reliably fixed to the branch connection by engaging the outer periphery of the covered wire. The ends 15, 16, 1
7 and 18 are preferably formed with slits 18, 19 and 20 as specifically shown in FIG.

Referring now to FIG. 3, the lower housing portion 10,
The bottom opening 21 of the hollow lower receptacle defined by 11 is closed by a pair of closures 22, 23 formed integrally with the respective lower receptacle.

The closure portions 22, 23 each have a plurality of spaced apart tongues 26, 27 extending from the bottom periphery of the semicircular lower receiving portion toward the seam 24 of the protective cover. There is. These tongues extend toward the opposite tongues to close the bottom opening when the protective cover is installed as shown in FIG. When connecting the tip of the connecting line or branch line to the connecting hole 43 of the connecting part 42 of the branching device, it is bent inward to allow the connecting line etc. to enter.

Since the protective cover of the present invention is attached to the branch connection, it must be made of an electrically insulating material. Therefore, it is preferable that the protective cover is made of plastic and is further integrally molded by suitable means such as injection molding. Further, the shape of the protective cover of the present invention can be modified as appropriate to match the shape of the target branching device.

(g) Effects of the invention As is clear from the above description, the protective cover of the invention closes the bottom opening of the lower storage part with multiple tongue-like pieces, and therefore, this bottom opening is normally closed to prevent electric shock. In addition to being able to prevent
When connecting a branch line or connecting line to a connecting part, it is possible to easily insert the branch line by pressing this tongue piece inward at the tip of the branch line, etc. The closed state of the opening can be maintained even in this state. Therefore, there is no need to provide an additional closing member for closing the bottom opening as in the prior art, which reduces the manufacturing cost of the protective cover and simplifies the connection work.

[Brief explanation of the drawing]

Fig. 1 is an elevational view showing the protective cover of the present invention attached to the branch connection part with its central part cut away;
Figure 3 is a side view of the protective cover, Figure 3 is a bottom view of the protective cover, Figure 4 is an elevational view of a conventional branching device,
FIG. 5 is an explanatory diagram of a conventional branch connection section. 1... Protective cover, 2, 3... Cover member,
4, 5...Horizontal accommodation part, 6, 7...Vertical accommodation part, 9...Connecting part, 10, 11...Lower accommodation part, 12, 13...Bracket, 18, 19, 2
0...Slit, 21...Bottom opening, 22, 23
... Closing part, 26, 27 ... Tongue piece, 30 ... Electric wire, 40 ... Branching device.

Claims (1)

[Scope of utility model registration request] It has an upper housing part that surrounds the branch connection part and is connected to the branch connection part, and a lower housing part that extends downward from the upper housing part and has a bottom opening, and the bottom opening is A protective cover characterized in that it is releasably closed by a plurality of flexible tongue-like pieces extending from a peripheral edge near the bottom of the lower housing part.