JP3243392B2 - Fastening bracket for cable junction box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener used for fastening a halved cable connection box.

[0002]

2. Description of the Related Art Usually, a cable connection box used for connection of a communication cable or the like is divided into two parts, and has a structure in which a self-fusing tape for sealing or the like is sandwiched between divided surfaces. Conventionally, screws have been used for fastening the split cable junction box because a strong fastening force is required to ensure airtightness and liquid tightness.

[0003]

However, there is a problem that tightening with a screw is troublesome and time-consuming. An object of the present invention is to solve the above-described problems of the related art,
An object of the present invention is to provide a fastener which can easily tighten a cable connection box, has a simple structure, and is inexpensive.

[0004]

A fastener for a cable junction box according to the present invention comprises a concave portion into which a tip of a tool such as a screwdriver can be inserted, a shoulder extending to both sides from both ends of the concave portion, and the shoulder. And a connecting portion extending substantially in opposite directions to the concave portion from both ends of the portion, and a shaft portion extending inward from both ends of the connecting portion.

[0005]

The fastening fitting is formed on the other of the opposed side edges in a state where the shaft is rotatably attached to the projection formed on one of the opposed side edges of the split cable connection box. The cable connection box is tightened by hooking the shoulder on the projection. If the cable fitting box is tightened by sandwiching a sealing member having rubber elasticity on the divided surface, the tightening state can be maintained by utilizing the elasticity of the sealing material. In addition, a considerable amount of tightening force is required to secure the airtightness and watertightness with the rubber elasticity of the sealing material.However, since this fastener has a concave part at the center of the shoulder, By inserting the tip of a tool (driver or the like) usually used at a construction site into the tool and using the tool as a lever, a strong tightening force can be generated.

[0006] A fastener for a cable connection box according to the present invention comprises a first horizontal bar portion mounted in a groove of one of the protrusions of the split cable connection box, and a second parallel bar portion parallel to the first horizontal bar portion. A second horizontal bar portion, a frame member having a connecting portion connecting both ends of the first and second horizontal bar portions, and rotatably attached to the second horizontal bar portion of the frame member, and at one end side A lock member having an engagement portion to be mounted in the groove of the other projection of the split cable connection box and having a hole at the other end side into which a tip of a tool such as a screwdriver can be inserted. Can also.

[0007] The fastening fitting of the cable connection box according to the present invention also includes a lever having one end rotatably mounted on one side of the split-type cable connection box and the other end being an open end, and one end having the open end. It is also possible to adopt a configuration in which a clamp is rotatably mounted in the middle and the other end is a hook portion hooked to the other of the two-piece cable connection box.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention. The fastening fitting 11 includes a concave portion 13 into which a tip of a tool such as a screwdriver can be inserted, a shoulder 15 extending from both ends of the concave portion 13 to both sides, and the concave portion 1 extending from both ends of the shoulder 15.
3 and a connecting portion 1 extending in a direction substantially opposite to that of the connecting portion 1.
7 are formed integrally with shaft portions 19 extending inward from both ends. Such a fastener 11 can be easily manufactured by bending a metal bar having high mechanical strength such as a steel bar.

Next, the state of use of the fastener 11 will be described with reference to FIGS. In the figure, 21a, 2
1b is a two-part cable connection box, 23 is a hinge part that rotatably connects one side edge of the cable connection boxes 21a and 21b, and 25a and 25b are cable connection boxes 21a and 21.
A protrusion 27 formed on the side edge opposite to b is a cable inlet formed on the end face of the cable connection boxes 21a and 21b. This cable connection box is of a type in which two cables (not shown) are introduced.

The projection 25a of one cable connection box 21a
Is formed with an axial groove 29 on the upper surface side, and the shaft portion 19 of the fastener 11 is mounted in the groove 29. As a result, the fastening fitting 11 becomes rotatable about the shaft 19. When tightening the cable connection boxes 21a and 21b, the tip of a tool 31 such as a screwdriver is inserted into the concave portion 13 of the fastening fitting 11 as shown in FIG.
1 is hooked on the other protrusion 25b, and the tool 31
Is turned in the direction of the arrow, the cable connection boxes 21a, 2
Since the fastening force acts on 1b and the projections 25a and 25b approach, the shoulder 15 of the fastening fitting 11 can be hooked below the projection 25b. Although not shown, a sealing member having rubber elasticity is interposed on the divided surface of the cable connection boxes 21a and 21b, and the shoulder 15 of the fastener 11 is engaged with the lower side of the projection 25b. The seal member is brought into a compressed state.

As shown in FIG. 1, the fastening fitting 11 of the present invention is arranged such that the plane P including the concave portion 13 is oblique to the plane Q including the shoulder portion 15, the connecting portion 17 and the shaft portion 19. It is desirable to form it. This makes it possible to easily perform the tightening operation and the tightening release operation using the tool.

FIGS. 5 and 6 show another embodiment of the present invention. The fastening fitting 11 includes a frame member 33 and a lock member 35.
It is composed of The frame member 33 is provided with a groove 39 of one of the protrusions 37a of the split cable connection boxes 21a and 21b.
a first horizontal bar 41 attached to the first horizontal bar 41, a second horizontal bar 43 parallel to the first horizontal bar 41, and both ends of the first and second horizontal bars 41, 43 And a connecting portion 45 to be formed. Such a frame member 33 is manufactured by bending a metal bar having high mechanical strength such as a steel bar.

The locking member 35 has a mounting portion 47 at an intermediate portion rotatably mounted on the second horizontal bar portion 43 of the frame member 33, and two mounting portions 47 on one side of the mounting portion 47.
The other protrusion 3 of the split cable connection box 21a, 21b
7b, which has an engaging portion 49 to be fitted in the groove 39b, and a hole 51 on the opposite side into which a tip of a tool such as a screwdriver can be inserted.
It has. This lock member 35 is formed of metal or plastic.

In order to tighten the cable connection boxes 21a and 21b using the fastener 11, first, the first horizontal bar portion 41 of the frame member 33 is split into two halved cable connection boxes 21a and 21b.
1b is mounted in the groove 39a of one protrusion 37a, and the engaging portion 49 of the lock member 35 is mounted in the groove 39b of the other protrusion 37b. Next, the tip of a tool (not shown) such as a screwdriver is inserted into the hole 51 of the lock member 35, and the lock member 3 is inserted.
5 may be rotated in the direction of arrow A in FIG. When the fastening is released, the reverse operation is performed.

The fastening fitting 11 has a simple structure and therefore has high dimensional accuracy and is inexpensive. Further, even if the lock member 35 is accidentally touched after the fastening, the lock member 35 is not easily detached.
Furthermore, the projections 37a, 3 of the cable connection boxes 21a, 21b
If 7b and its grooves 39a, 39b have the same shape,
Fastening can be performed from either side, improving workability.

FIG. 7 shows still another embodiment of the present invention.
The fastener 11 includes a lever 53 and a fastener 55. One end of the lever 53 is rotatably attached to one protrusion 57a of the split cable connection boxes 21a and 21b by a first shaft pin 59, and the other end is an open end.

One end of the clamp 55 has the lever 53
Is mounted rotatably by a second shaft pin 61 in the middle (preferably a position deviated from the center toward the shaft pin 59), and the other end is a hook 63. Hook 63
Is hooked on a horizontal bar 65 fixed to the other protrusion 57b of the split cable connection boxes 21a and 21b.

FIG. 7B shows the cable connection boxes 21a and 21.
b has been fastened. When the open end of the lever 53 is rotated clockwise from this state, the hook 63 is disengaged from the horizontal bar 65, and the fastening state is released. When fastening, the reverse operation is performed. Although the structure of the fastener 11 is slightly complicated, the operation of fastening and releasing is simple.

[0019]

As described above, the fastening fitting of the present invention can easily tighten the cable connection box. In addition, the cost is extremely low due to the simple structure.

[Brief description of the drawings]

FIG. 1 shows one embodiment of a fastener according to the present invention (a).
Is a front view, (b) is a side view, and (c) is a bottom view.

FIG. 2 is a perspective view showing a state in which the fastening fitting of the present invention is attached to a cable connection box.

FIG. 3 is an end view of the cable connection box to which the fastener of the present invention is attached.

FIG. 4 is a plan view of the same.

FIG. 5 is a perspective view showing another embodiment of the fastener according to the present invention.

6 (a) is a side view, and FIG. 6 (b) is a front view, showing a use state of the fastening fitting of FIG.

7A and 7B show still another embodiment of the fastener according to the present invention, wherein FIG. 7A is a front view and FIG. 7B is a side view.

[Explanation of symbols]

 11: fastening fitting 13: concave portion 15: shoulder portion 17: connecting portion 19: shaft portion 21a, 21b: cable connection box 23: hinge portion 25a, 25b: protrusion 27: cable inlet 29: groove 31: tool 33: frame Member 35: Locking member 37a, 37b: Projection 39a, 39b: Groove 41: First horizontal bar portion 43: Second horizontal bar portion 45: Connecting portion 47: Mounting portion 49: Engagement portion 51: Hole 53: Lever 55: Clamp 57a, 57b: Projection 59: First shaft pin 61: Second shaft pin 63: Hook 65: Horizontal bar

──────────────────────────────────────────────────続 き Continuing from the front page (73) Patent holder 595083051 Japan Recom Co., Ltd. 4-35-3, Yoyogi, Shibuya-ku, Tokyo (72) Inventor Koji Yamagiwa 1-6-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone (72) Inventor Koji Okamoto 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Takashi Kawamura 5-23-8, Nishigotanda, Shinagawa-ku, Tokyo Shoden Co., Ltd. (72) Inventor Kunihiko Jimbo 1-12-23 Tajiri, Ichikawa-shi, Chiba Dai-ichi Sangyo Sangyo Co., Ltd. (72) Inventor Kohei Sasaki 1-25-17 Himonya, Meguro-ku, Tokyo Inside Totwo Souken (72) Inventor Kaneya Obube 1300 Kita-Toyama Irukashinta, Komaki City, Aichi Prefecture Inside of Nippon Telecommunications Materials Co., Ltd. (56) References P, U) JitsuHiraku Akira 58-70354 (JP, U) (58 ) investigated the field (Int.Cl. ^7, DB name) H02G 3/08 H02G 3/14

Claims (1)

(57) [Claims] 1. A frame member (33) and a lock member (35), wherein said frame member (33) is a groove (39a) of a projection (37a) of one (21a) of a split type cable connection box. , A second horizontal bar (43) parallel to the first horizontal bar (41), and first and second horizontal bars (41). , 43), and a connecting portion (45) for connecting both ends of the frame member, and the locking member (35) is attached to the intermediate portion at a second portion (43) of the frame member so as to be rotatable. 47), and has an engaging portion (49) mounted on one side of the mounting portion (47) in the groove (39b) of the projection (37b) of the other (21b) of the split cable connection box. Characterized in that the cable has a hole (51) on the opposite side into which a tip of a tool such as a screwdriver can be inserted. Fastening bracket of the connection box.