JP2002233028A - Box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily make operation of devices, such as a breaker, a test switch and the like which are built in a box. SOLUTION: The box, which is a container-like member and of which the front side is opened, comprises a box main body 1 which is installed with electrical devices (a breaker 7, a test switch 8 and the like) and a terminal board and the like, and a top cover 2 which closes the front side opening part of the box main part 1. A hole 21 for operation is disposed on the top cover 2 at the position corresponding to the electrical devices disposed in the box main body 1, and a operation part cover 3 made of a flexible material is provided to cover the hole 21 for operation. The operation of the switch of the electrical devices can be made from the outside of the operation part cover 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box housed in a lighting pole installed on a road or a park.

[0002]

2. Description of the Related Art In a lighting pole installed on a road or a park, a window is provided at a position of about 50 to 100 cm from the ground, and a connection box is stored in the pole.

A box installed in a lighting pole comprises a box body having an open front side and an upper lid for closing the front opening of the box body.
A test switch and a terminal block for lighting confirmation are accommodated. The box is provided with an electric wire inlet, and has a structure in which a power supply line, an output line, a control line, and the like and each device are connected in the box.

[0004] The box installed in the lighting pole includes:
Are used as the waterproof and dustproof structure, it serves to protect the interior of the equipment and connection portion from an external force, humidity and the like.

[0005]

By the way, when an electric leakage occurs in the lighting pole, the breaker is turned off. Therefore, for recovery, it is necessary to turn on the breaker switch after removing the electric leakage part. At this time, it is necessary to remove the upper lid from the box main body and operate the switch of the breaker in the box, and it takes time to turn on the breaker switch again.

In the case of a lighting pole with dimming, it is necessary to turn on a test switch when checking the lighting in the daytime. In this case, as in the above case, the test switch is operated by removing the top cover. Switch operation is troublesome.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a box having a structure capable of easily operating devices such as a built-in breaker and a test switch.

[0008]

SUMMARY OF THE INVENTION A box according to the present invention is a box installed in a lighting pole, which is a container-like member having an open front side, and includes electrical equipment (eg, breakers, test switches, etc.) and terminals. It consists of a box body on which the base is installed, and an upper lid for closing the front opening of the box body, and the upper lid has an operation hole formed at a position corresponding to the electric device installed on the box body. An operation unit cover made of a flexible material is provided to cover the operation hole, and a switch of an internal electric device can be operated from the outside of the operation unit cover. .

[0009] In the box of the present invention, it is preferable that a part of the operation section cover is formed in a shape corresponding to the shape of a switch operation section of an electric device, for example, an operation lever of a breaker or an operation rod of a test switch.

Here, the material of the operation section cover used for the box of the present invention may be rubber such as chloroprene rubber, butyl rubber, EPT, NBR, or an elastic body having a resin such as styrene-based elastomer or olefin-based elastomer as a component. Can be mentioned.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view (A) and a plan view (B) of a box according to the present invention, and FIG. 2 is a side view of the embodiment. 3 and 4 are a sectional view taken along line XX and a sectional view taken along YY of FIG. 1, respectively.

FIG. 5 is a front view (A) and a plan view (B) showing only the box body of the embodiment of FIG.
Is a side view of the box body.

The box of this example is a box of a waterproof / dustproof structure installed in a dimmed lighting pole,
It comprises a box body 1 having an open front side and an upper lid 2 for closing the front opening of the box body 1.

The box body 1 is a resin molded product such as an ABS resin or a phenol resin, and has a plurality of upper and lower wire inlets 11.

As shown in FIG. 5, the electric wire inlet 11 has a through hole 11a opened in the wall of the box body 1.
And a cylindrical boss 11b protruding outward from the peripheral edge of the through hole 11a. Boss 11b
A locking projection 11c is formed on the entire periphery of the distal end portion.

As shown in FIGS. 5 and 6, the box body 1 is provided with a breaker 7, a test switch 8, and a board 13 for holding two terminal blocks 9, 9. Substrate 13, upper and lower end portions are shaped into rising on the front side, the terminal block 9 is mounted on the respective rising portions 13a.

The upper lid 2 is a resin molded product such as an AS resin or a methacrylic resin, and has a central portion (a position corresponding to the breaker 7 and the test switch 8) as shown in FIGS.
Is provided with a rectangular operation hole 21. Operation hole 21
A rising piece 21a having a locking groove 21b is formed over the entire periphery at the periphery.

The operation section cover 3 is attached to the operation hole 21. The operation unit cover 3 is formed of a flexible material such as chloroprene rubber, butyl rubber, EPT, and NBR. A hanging piece 3a is provided on the periphery of the operation unit cover 3.
A locking piece 3b that fits into the locking groove 21b of the upper lid 2 is formed at an end of the hanging piece 3a. By fitting the locking piece 3b into the locking groove 21b, the operation unit cover 3 is fixed to the upper cover 2, and the waterproof / dustproof property of the joint between the operation unit cover 3 and the upper cover 2 is ensured. You.

The operation unit cover 3 is provided with concave portions (projected to the front side of the cover) 31, 32 at positions corresponding to the operation lever 71 of the breaker 7 and the operation rod 81 of the test switch 8 arranged on the box body 1. The respective ends of the operation lever 71 and the operation rod 81 enter into these concave portions 31 and 32.

The upper and lower ends of the upper lid 2 are provided with latches 22 respectively.
The upper lid 2 can be fixed to the box main body 1 by aligning the upper lid 2 with the box main body 1 and hooking the latch 22 on the locking projection 12 of the box main body 1. In addition, a packing 6 for waterproofing and dustproofing is provided in a joint portion between the box body 1 and the upper lid 2.

As shown in FIG. 1, a contraction tube 4 and a rubber sleeve 5 are attached to the electric wire inlet 11 of the above box, and a wire penetrating portion (the electric wire inlet 1) is provided.
1) Waterproof and dustproof properties are ensured.

The respective structures of the shrink tube 4 and the rubber sleeve 5 will be described below.

The shrink tube 4 is made of EPDM (ethylene
As shown in FIG. 7A, a spiral core 41 made of plastic (for example, polypropylene resin) is inserted therein.

The spiral core 41 has a structure in which a belt-like member 41a is spirally wound.
By pulling along the axial direction of the shrinkable tube 4 and pulling out the entire spiral core 41 to the outside, the shrinkable tube 4 is shrunk and has a structure in which it is in close contact with the jacket of the cable C (FIG. 7 ( B)).

The shrinkable tube 4 having the above-described structure has an advantage that the range of the connectable cable outer diameter is wide because the shrinkable range of the tube is large.

The rubber sleeve 5 is shown in FIGS. 8A and 8B.
As shown in FIG. 7, a sleeve main body 51 and a sealing member 53 are integrally formed of a rubber molded product such as EPT or NBR.

The sleeve main body 51 has an outer peripheral surface processed into a conical taper shape. The outer diameter of the sleeve body 51 is
Because the inner diameter of the boss 11b of the box body 1 is larger than the inner diameter of the boss 11b, the outer peripheral surface (conical tapered surface) is brought into close contact with the inner surface of the boss 11b by pushing the sleeve main body 51 into the boss 11b.

The sleeve body 51 has six electric wire layer through holes 52 extending in the axial direction. These electric wire layer through holes 52 are arranged rotationally symmetrically with respect to the central axis of the sleeve main body 2. In each of the electric wire layer through holes 52, a partition wall (knockout member) 52a that can be pierced by a tool such as an electric wire or a drill is provided.

The seal member 53 is a skirt-like (cylindrical) member extending with a uniform thickness from the periphery of the large-diameter end of the sleeve main body 51, and can be folded back toward the small-diameter side of the sleeve main body 51. Flexible.

When the above-mentioned rubber sleeve 5 is used, as shown in FIG. 9A, the number of lead wires (for example, wiring of a ballast) to the inside of the box is adjusted according to the number of sleeve main bodies 51.
The electric wire W is passed through each of the electric wire layer through holes 52.

Next, as shown in FIG. 9B, the sleeve main body 51 is connected to the electric wire inlet 11 (boss 11) of the box.
b) and push it in. When the sleeve main body 51 is pushed into the boss 11b, the sleeve main body 51 is compressed on the inner surface of the boss 11b, and the inner surface of each wire layer through hole 52 comes into close contact with the jacket of the electric wire W.

After the above mounting is completed, the sealing member 53 of the rubber sleeve 5 is folded back toward the small diameter side of the sleeve main body 51 as shown in FIG. This sealing member 5
By folding back, the end of the boss 11b on which the sleeve main body 51 is mounted is covered with the sealing member 53, and that part is sealed. Due to the double sealing effect of the seal due to the close contact between the tapered surface and the inner surface of the boss 11b, high waterproof, dustproof and oil resistance can be obtained.

Further, since the folded seal member 53 is hooked on the locking projection 11c at the tip of the boss 11b (FIG. 9).
(C)) Even if external force acts on the electric wire W, the sleeve body 5
There is no possibility that problems such as the 1 moving in the removal direction or falling off may occur, and stable sealing performance can be always maintained.

According to the above embodiment, the operation hole 21 is provided in the upper lid 2 and the operation section cover 3 which covers the operation hole 21 is provided, so that the operation lever 71 and the test switch 8 of the breaker 7 in the box are provided. Operation rod 81,
Since it is configured so that it can be operated from the outside of the box, the breaker 7 can be removed without removing the top cover 2 when restoring the lighting pole or checking the lighting.
Of the switch and the operation of the test switch 8 can be easily performed (see FIG. 4).

In the above embodiment, as shown in FIG. 6, rising portions 13a are provided at upper and lower ends of a substrate 13 disposed in the box body 1, and the terminal block 9 is mounted on the rising portions 13a. Therefore, connection work such as a power supply line, an output line, and a control line can be performed near the opening of the box body 1. Thereby, the work space at the time of connection can be enlarged, and the connection work becomes easy.

Here, in addition to the wiring of the ballast and the like, wires connected to the lamp are drawn into the box installed in the lighting pole.

As the electric wires connected to the lamp, 2
Cable wire (core diameter: φ10.5 ~ φ1)
6.0), and a single-hole rubber sleeve 101 as shown in FIG. 10 is used for such a cable line.

The rubber sleeve 101 shown in FIG. 10, EP
A molded article of rubber such as T or NBR
2 and the sealing member 104 are integrally formed.

The sleeve body 102 has an outer peripheral surface processed into a conical taper shape. The outer diameter of the sleeve body 2 is
Since the inner diameter of the boss 21b of the box 10 is slightly larger than that of the boss 21b, the outer peripheral surface (conical tapered surface) is brought into close contact with the inner surface of the boss 21b by pushing the sleeve main body 102 into the boss 21b.

The sleeve main body 102 is formed with one electric wire insertion hole 103 extending in the axial direction. A partition wall (knockout member) 1 that can be pierced by a tool such as an electric wire or a cutting tool is provided at an end of the electric wire insertion hole 103.
03a is provided.

The seal member 104 is provided on the sleeve body 102.
Is a skirt-shaped (cylindrical) member extending with a uniform thickness from the periphery of the large-diameter end portion, and has the flexibility to be folded toward the small-diameter side of the sleeve main body 102.

When the single-hole rubber sleeve 101 is used, the electric wire insertion hole 3 is opened, and the electric wire insertion hole 3 is
For example, after passing through a two-core or three-core cable (not shown), the box 1 is operated in the same manner as in FIGS. 9B and 9C.
No. 0 is installed in the wire inlet 21. The rubber sleeve 101 shown in FIG. 10 can be applied to a cable having a wire diameter in a range of φ10.5 to φ16.0.

[0044]

As described above, according to the box of the present invention, an operation hole is provided at a position corresponding to a switch of a device such as a breaker or a test switch in an upper lid for closing an opening of a box body, An operation section cover made of a flexible material is provided to cover the operation hole, and the switches of the devices in the box can be operated from the outside of the operation section cover. It is possible to easily turn on the breaker switch at the time of restoration of the power supply and to operate the test switch at the time of checking the lighting without removing the upper cover.

[Brief description of the drawings]

FIG. 1 is a front view (A) and a plan view (B) of an embodiment of a box of the present invention.

FIG. 2 is a side view of an embodiment of the box of the present invention.

FIG. 3 is a sectional view taken along line XX of FIG. 1;

FIG. 4 is a sectional view taken along line YY of FIG. 1;

5 is a front view (A) and a plan view (B) showing only the box main body of the embodiment of FIG.

FIG. 6 is a side view of the box body.

FIG. 7 is a cross-sectional view showing a configuration and a use state of a shrinkable tube used in the embodiment of the present invention.

FIG. 8 is a front view (A) and a central longitudinal sectional view (B) of a rubber sleeve used in the embodiment of the present invention.

FIG. 9 is an explanatory diagram of a mounting procedure of the rubber sleeve shown in FIG.

FIG. 10 is a front view (A) and a central longitudinal sectional view (B) of another example of the rubber sleeve used in the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box main body 11 Wire lead-in port 11a Through hole 11b Boss 11c Locking convex part 12 Locking projection 13 Substrate 13a Rising part 2 Top lid 21 Operation hole 21a Rising piece 21b Locking groove 22 Latch 3 Operating part cover 3a Hanging piece 3b Stop pieces 31, 32 Recess 4 Shrink tube 41 Spiral core 41a Band member 5 Rubber sleeve 51 Sleeve body 52 Electric wire insertion hole 52a Partition wall 53 Seal member 6 Packing 7 Breaker 71 Operating lever 8 Test switch 81 Operating rod 9 Terminal block C Cable W Electrical wire

Claims (2)

[Claims] 1. A box installed in a lighting pole, which is a container-shaped member having an open front side, in which a box main body in which electric equipment and a terminal block are installed and a front opening of the box main body are closed. It consists of an upper lid,
An operation hole is formed at a position corresponding to the electric device installed in the box body, and an operation unit cover made of a flexible material that covers the operation hole is provided, and from the outside of the operation unit cover A box configured to operate a switch of an internal electric device. 2. The box according to claim 1, wherein a part of the operation unit cover is formed in a shape corresponding to a shape of a switch operation unit of the electric device.