JP2003189442A - Cable relay box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable relay box capable of leading in a cable equipped with a connector while keeping a dust proofing property. <P>SOLUTION: The cable relay box comprises a body base 12 to which the cables 31, 32 are led in from the outside, a box-structured cover 13 that is detachably attached to the base 12 so as to cover the base and comprises notches 27-1, 27-2 that avoid the interference of the cables 31, 32 in attaching the cover, and block means 21, 25 and 29 that are formed of elastic bodies, and block a gap formed between the notches 27-1, 27-2 and the cables 31, 32 in attaching the cover 13. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cable relay box.

[0002]

2. Description of the Related Art FIG. 4 is a front view of a conventional cable relay box installed around a machine. In this cable relay box 50, a cable 51 connected to a control panel (not shown) and a cable 52 connected to each part of the machine are generally provided with a cable penetrating piece 53 corresponding to each diameter.
It is introduced in a dustproof state through. FIG. 5 is an enlarged cross-sectional view of portion C in FIG. As shown in FIG. 5, the cable 51 has a multi-core structure (a four-core structure in this example), and a screw terminal 54 is fixed to the end of each core wire 52a.

This cable 51 is inserted into the cable penetrating metal piece 53 from the side of each terminal 54, and then each terminal 54 is inserted.
Are connected to predetermined terminals 56 on a relay terminal board 55 arranged in the relay box 50 by screws. Although not shown, the cable 52 is similarly inserted into the corresponding cable penetrating piece 53, and the core wire of the cable 52 is connected to the predetermined terminal 56 on the terminal board 55 (the terminal 56 to which the core wire 51a of the cable 51 is connected). It is connected to the terminal 56) located on the opposite side. Each core wire 51 a of the cable 51 is connected to a predetermined core wire of the cable 52 via the terminal board 55.

[0004]

The relay box 50 described above is used.
When the above is applied to, for example, plant equipment, one or both of the cables 51 and 52 are connected to the terminal board 5 at the time of shipment of this plant equipment or at the time of maintenance at the installation destination of the equipment.
5 and pulling out the cable from the cable penetrating metal piece 53, and inserting a new cable into the cable penetrating metal piece 5
The work of inserting into 3 and connecting to the terminal board 55 is carried out.

When the cables 51 and 52 are connected, the terminals 54 of the cables 51 and 52 are connected to the terminal board 5 as described above.
5 involves the work of screwing to the terminal 56, and
When disconnecting the cables 51, 52, the terminal board 55
It involves the work of removing the screws. Therefore, when the conventional relay box 50 is used for plant equipment or the like, a great deal of time and labor is required for connecting and disconnecting the cables 51 and 52 to and from the terminal board 55.

By the way, as a general connecting means for signal line cables, a plurality of clamp type connecting ports are provided in FIG.
The male / female plug-in type connection unit 57 (hereinafter referred to as connector) is used. The connector 57 has the convenience that the cable can be easily connected and disconnected without the screwing operation or the screw removing operation. However, in the relay box 50 using the above-described cable penetrating metal piece 53, the connector 57 cannot be passed through the cable penetrating metal piece 53, and therefore the connection of the cables 51 and 52 (relaying) using the connector 57 is impossible. Is.

In view of such a situation, an object of the present invention is to provide a cable relay box in which a cable with a connector can be introduced while keeping dustproofness.

[0008]

A cable relay box according to the present invention includes a main body base into which a cable is introduced from a side and a detachable cover on the main body base, and the cable when the cover is attached. A cover having a box structure formed with a notch portion for avoiding interference with a cover and an elastic body, and closing a gap formed between the notch and the cable when the cover is covered. Means and are provided. According to this cable relay box, the cable is introduced into the main body base with the cover removed. Further, when the cover is covered, the gap formed between the notch of the cover and the cable is closed by the closing means.

The closing means is provided with a first elastic body fixedly arranged on the main body base, and detachably arranged on the main body base, and cooperates with the first elastic body to sandwich the cable. It can be configured with a second elastic body.

Further, the closing means is fixedly arranged on the first elastic body fixed to the main body base and the cover, and the first elastic body is fixed when the cover is attached to the main body base. And a second elastic body that sandwiches the cable in cooperation with the elastic body.

Further, the main body base may be provided with a clamp means for clamping the cable.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an exploded perspective view showing the entire cable relay box according to the present invention. Also, FIG.
3 and FIG. 3 are a sectional view taken along the line AA and a sectional view taken along the line BB of FIG. 1, respectively.

As shown in FIG. 1, a cable relay box 10 according to this embodiment includes a main body base 12 fixed to a pedestal 11 and a cover 13 having a box structure. One multi-core cable (in this example, having eight core wires) 31 connected to
It is used for relaying with a plurality of multi-core cables 32 (in this example, having two core wires) connected to respective parts of a machine such as plant equipment (not shown).

The main body base 12 includes a flat plate 14 fixed to the pedestal 11, a shallow cover receiving plate 15 protruding from both upper corners of the flat plate 14 along the outer circumference of the flat plate 14, and the cover receiving plate 15. And a pair of left and right arms 17 protruding further forward from the left and right parts of the. Each arm 17 is provided with a screw hole 16 for fixing the cover at the bent tip.

At the lower edge of the flat plate 14, an elastic sponge body 21 having a thickness exceeding the protruding end of the cover receiving plate 15 is formed.
Is attached so as to be in contact with the inner surface of the receiving plate 15 (see FIGS. 2 and 3). A metal clamp member 22 for clamping the cable 31 and a metal clamp member 23 for clamping each cable 32 are provided at the cable introduction portion of the flat plate 14.

The clamp member 22 has a substantially U-shaped horizontal cross section, and an outer flange portion 22a protruding horizontally at the lower end thereof.
And the elastic sponge body 25 is formed on the inner peripheral surface thereof.
Is attached. As shown in FIG. 2, the clamp member 22 includes a cutout portion 22b on the lower side of the flat plate 14 side, and the outer flange portion 22a is in the same plane as the lower horizontal portion of the cover receiving plate 15. It is screwed and fixed to the front surface of the flat plate 14 so as to be positioned. When the clamp member 22 is fixed, the elastic sponge body 21 provided on the flat plate 14 side projects into the clamp member 22 through the cutout portion 22b (see FIG. 2).

When the cable 31 is inserted into the clamp member 22, the cable 31 is constrained by the elastic pressure contact force of the elastic sponge body 25 attached to the inner peripheral surface of the clamp member 22. That is, this clamp member 22 is
It has a function of clamping the cable 31 to the flat plate 14.

On the other hand, each clamp member 23 has an L-shaped cross section as shown in FIG. 3 and projects from the front surface of the flat plate 14. The clamp members 23 are arranged above the elastic sponge body 21 at predetermined intervals in the width direction of the flat plate 14. The clamp members 22 and 23 are not limited to the above shapes, and other appropriate shapes can be adopted as long as they have the same function.

The cover 13 shown in FIG. 1 is fitted and covered on the flat plate 14 with its inner side surface in contact with the outer side surface of the cover receiving plate 15 provided on the flat plate 14, and is provided on the left and right sides of the front surface portion. A pair of long screws 26 penetrating the screw holes 1 of the arms 17
It is fixed to the main body base 12 side by being screwed into 6 (see the chain line in FIG. 1). This cover 13
Notch portion 27 for cable introduction formed on the lower side surface portion thereof
1, 27-2, a support plate 28 erected along the back side edge of the cable introduction notch 27-2, and the support plate 28.
And an elastic sponge body 29 (made of urethane or the like) attached to the surface of the cutout portion 27-2 side. Reference numeral 40 indicates a nameplate provided on the front surface of the cover 13.

As shown in FIG. 2, a male connector block 61 is previously connected to each core wire 31a of the cable 31, and as shown in FIG. 3, each core wire 3 of the cable 32 is connected.
A male connector block 62 is also connected to 2a in advance. The connector blocks 61 and 62 have connector pins 60 whose pins are fixedly arranged on the control board 14.
Plugged into one and the other connection,
Each core wire 31a of the cable 31 and each core wire 32a of the corresponding cable 32 are electrically connected to each other.

The procedure for attaching the cables 31 and 32 to the cable relay box 10 will be described below. The cable 31 to which the connector block 61 is connected is
It is introduced from the lower side of the main body base 12 with the cover 13 removed. Then, the clamp member 22 is screwed to the flat plate 14 in a state where the tip end portion of the cable 31 is press-fitted into the sponge body 25 of the clamp member 22 to restrain the cable 31, and then the connector block 61 is connected to the connector connection plate 60. Insert it into the corresponding slot.

On the other hand, each cable 32 to which the connector block 62 is connected is also introduced from the lower side of the main body base 12 and then its tip end is clamped to the corresponding clamp member 23 by a binding band 23a (see FIG. 3). To do. Then, the connector block 62 is connected to the connector connecting board 6
Insert it into the corresponding slot of 0.

When the cables 31 and 32 are clamped and connected as described above, the cover 13 is put on the main body base 12, and then the long screw 26 is screwed into the screw hole 16 of the arm 17 to cover the cover 13. Is fixed to the main body base 12. At this time, the interference between the cover 13 and the cables 31, 32 is avoided by the cable introduction notches 27-1, 27-2 provided in the cover 13.

With the cover 13 attached, as shown in FIG. 2, the lower flange portion 22a of the clamp member 22 is attached.
The peripheral portion of the cable introducing notch portion 27-1 of the cover 13 enters under and overlaps. Further, in the lower part of the clamp member 22, the clamp member 2 is
Since the cable 31 is sandwiched between the elastic sponge body 21 projecting in 2 and the elastic sponge body 25 in the clamp member 22, the periphery of the cable 31 in the lower part of the clamp member 22 is surrounded by these sponge bodies 21, 25. It is sealed with. As a result, the lead-in portion of the cable 31 is blocked from the outside to ensure dustproofness.

In addition, the above-mentioned notch portion 27 for introducing the cable
If 1 is formed smaller than the cross-sectional area of the clamp member 22, the flange portion 22a is unnecessary. But,
In order to make it possible to apply the clamp members 22 of various sizes that match the diameter of the cable 31 to be used, the cable introduction notch portion 27-1 is formed to be larger, and the clamp member 22 is formed as necessary. The flange portion 22a of the notch 2
It is desirable to cover unnecessary parts of 7-1.

On the other hand, in the mounted state of the cover 13, the cable 32 is sandwiched between the elastic sponge body 21 on the flat plate 14 side and the elastic sponge body 29 on the cover 13 side as shown in FIG. Elastic sponge body 21, 29
The upper portion of the cable introduction cutout portion 27-2 is covered with. Therefore, the introduction portion of the cable 32 is shielded from the outside to ensure dustproofness.

When the relay of the cables 31 and 32 in the relay box 10 is turned off for maintenance of the machine, etc., the front long screw 26 is loosened, the cover 13 is removed from the main body base 12, and then the cable 31 is removed. , 32 of the connector blocks 61 and 62 may be pulled out from the connector connection board 60. Further, the connector blocks 61 and 62 are pulled out from the connector connection board 60, and the cables 31 and 32 are connected to the clamp members 2 and 23.
Once removed from the main body base 11, the cables 31 and 32 can be separated from the main body base 11 for free inspection and repair.
Therefore, according to the cable relay box according to this embodiment, the cables 31 and 32 are detached, the inspection and repair are performed,
Connection and disconnection are significantly easier.

In the above embodiment, when the cable 31 has a small diameter, the cable 31 can be clamped and sealed by using the same means as the cable 32 clamp and seal means. On the contrary, the clamp and the seal of the cable 32 are connected to the cable 3
It is also possible to use a means similar to the clamp and seal means of 1.

[0029]

As is apparent from the above description, the cable relay box according to the present invention has at least the following effects. (1) It is possible to introduce a cable to which a connector is connected while keeping the dustproof property. (2) Since no cable penetrating hardware is used, the material cost of the cable relay box, the manufacturing cost, and the number of wiring work steps can be significantly reduced. (3) Since a cable relay connection method using a connector can be adopted, it is possible to greatly reduce the work efficiency by minimizing the connection and disconnection work time during assembly and disassembly of the machine. In addition, since the connection work that has conventionally been performed around the machine can be performed on the desk, it is possible to improve the safety of the work environment.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a cable relay box according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along the line BB of FIG.

FIG. 4 is a front view of a conventional cable relay box.

5 is an enlarged view of a portion C in FIG.

FIG. 6 is a conceptual diagram showing a male / female plug-in type connection unit having a clamp type connection port.

[Explanation of symbols]

10 cable relay box 12 body base 13 cover 14 flat plate 15 Cover support plate 17 arms 21,25,29 Elastic sponge body 22,23 Clamp member 22a Flange part 27-1, 27-2 Notch 28 Support plate 31,32 cable 60 connector connection board 61,62 Connector block

Claims (4)

[Claims] 1. A main body base into which a cable is introduced from a side, and a notch portion that is detachably covered with the main body base and that avoids interference with the cable during the covering. A cover having a box structure, and a closing means made of an elastic body for closing a gap formed between the notch and the cable when the cover is covered,
A cable relay box comprising: 2. The cable includes a first elastic body fixedly arranged on the main body base, the detachable means being removably arranged on the main body base, and the cable in cooperation with the first elastic body. And a second elastic body sandwiching the pin.
Cable relay box described in. 3. The closing means is fixedly arranged on a first elastic body fixed to the main body base and the cover, and the first elastic body is fixed when the cover is attached to the main body base. The cable relay box according to claim 1, further comprising: a second elastic body that sandwiches the cable in cooperation with the elastic body. 4. The cable relay box according to claim 1, wherein a clamp means for clamping the cable is provided on the main body base.