JPH0624099Y2 - Multi-circuit switch top and bottom partition structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vertical partition structure for a multi-circuit switch.

[Prior Art] A conventional multi-circuit switch is arranged horizontally with respect to the substantial center of the main body case, and a base supporting the switch main body has an inverted L-shaped section.
It is fixed to the inner surface of the main body case via a V-shaped mounting bracket and has a structure that partitions the top and bottom of the main body case.

[Problems to be solved by the invention] However, since the bottom surface of the main body case is opened and connected to the underground handhole, it is necessary to prevent moisture from the handhole from entering the upper chamber of the main body case. In the conventional vertical partition structure, a moisture-proof packing is interposed between the inner surface of the main body case and the side surface of the base. In such a structure, it is very troublesome to inspect whether or not the packing is attached in a uniformly pressed state. Also, when replacing the packing, the base has to be removed from the inner surface of the main body case, so the switch main body must be removed from the base before that, and the cable wiring removal work and packing replacement The subsequent reconnection work was very troublesome.

The eye of the present invention prevents moisture from entering from the inside of the handhole into the upper chamber of the main body case, and can easily confirm the pressure contact state of the sealing material interposed between the flange portion and the base, Another object of the present invention is to provide an upper and lower partition structure of a multi-circuit switch which can easily perform the work of replacing the sealing material and the work of replacing only the main body case.

[Means for Solving the Problems] In order to achieve the above eyes, the present invention has an opening provided with an opening / closing door on the front surface, and an opening communicating with an underground handhole on the bottom surface. In the upper and lower partition structure of a multi-circuit switch in which the inside of the main body case is divided into two upper and lower chambers by a base and the switch main body is supported on the base, supporting legs are attached to a fixed base installed on the handhole. The base is supported by the support legs, and the base is supported and fixed by the support legs. A fitting flange portion is provided, further, a contact portion is provided inside the opening / closing door at a position corresponding to the base, and a sealant is arranged on at least one of the base and the contact portion. It is a summary.

[Action]

Therefore, when the main body case is placed and fixed on the fixed base, the lower surface of the flange portion and the upper surface of the base are brought into close contact with each other via the sealing material, and when the opening / closing door is closed, the sealing material is provided between the base and the contact portion. Will be close through. Further, since the base supporting the switch main body is supported and fixed by the support leg portions provided upright on the fixed base, it is possible to lift only the main body case and remove it.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the fixed base 1 is fixedly mounted on the handhole H, and the main body case 2 is fixed on the fixed base 1 with bolts 3 and nuts 4.
The front side surface 2a of the main body case 2 is provided with a quadrangular opening 5, and the opening 5 is provided with a contact surface 6 at the peripheral edges of the square. Further, the bottom of the main body case 2 is opened so as to be connected to the handhole H.

A flange portion 7 is integrally fixed to the body case 2 by welding on the inner sides of the left and right side surfaces 2b and the rear side surface 2c. Eye bolts 8 for lifting the main body case 2 are provided at both ends of the upper surface 2d of the main body case 2 respectively.

The base 10 is supported on both side surfaces 2b and the rear side surface 2c of the main body case 2 via a plurality of fixing members 12 having an inverted L-shaped cross section, which are provided on the peripheral edge of the lower surface of the base 10. This base 1
A switch main body 9 composed of a mechanism portion 9a and an opening / closing portion 9b is provided on the top of the switch. A hollow packing 11 made of synthetic rubber as a sealing material is interposed between the lower surface of the flange portion 7 and the upper surface of the peripheral edge of the base 10 along three peripheral edges except the front surface of the main body case 2.

As shown in FIGS. 3 and 4, the upper surface of the fixing member 12 is attached to the lower surface of the base 10 via the spacer 13 and the washer 14
It is fixed by a bolt 15 through the bottom of the main body case 2 on both sides 2b and the rear side 2c.
It is fixed by a bolt 17 via 6.

As shown in FIGS. 1 and 4, the left and right side surfaces 2 of the main body case 2
A pair of legs 18 as supporting legs are fixed to the fixed base 1 corresponding to b and the rear side surface 2c by bolts 19, respectively. Further, the tips of the legs 18 are bent in an L shape so as to face each other toward the inside of the main body case 2, and a bent curved surface 20 that abuts the lower surface of the base 10 is formed. The bent curved surface 20 of the leg 18 is fixed to the lower surface of the base 10 by a bolt 21. Therefore, in addition to the fixing member 12, the base 10 includes the legs 1 fixed to the fixing base 1.
It is also supported by 8.

As shown in FIGS. 2 and 5, a plurality of hinges 22 are fixedly provided on the front and rear sides of the body case 2 in the vertical direction.
On the other hand, a pair of left and right open / close doors 23 that cover the opening 5 with respect to 2 are pivotally supported so that the double door can be opened. The opening / closing door 23 is locked by a locking device (not shown).

The opening / closing door 23 is formed in a square shape, and a hollow packing 24 made of synthetic rubber is adhesively fixed to the inner surface of the opening / closing door 23 that abuts the abutting surface 6 of the main body case 2 with an adhesive. Therefore, when the opening / closing door 23 closes the opening 5, the contact surface 6 of the main body case 2 and the hollow packing 24 come into close contact with each other. In addition, on the inner side surfaces of the pair of opening / closing doors 23, a hollow packing 24 extending in the up-down direction and a packing 24 extending in the left-right direction on the side of the hinge 22.
The inner side of the cross section L is in contact with the side of the hollow packing 24.
A plurality of character-shaped restricting pieces 25 are fixed by welding.

As shown in FIGS. 4 to 6, on the inner side surfaces of the pair of opening / closing doors 23, contact portions 26 formed in an inverted L-shaped cross section are provided.
Are fixed in close contact with each other by welding in the left-right direction. The contact portion 26 corresponds to the base 10 of the switch body 9 when the opening / closing door 23 closes the opening 5. A hollow packing 27 made of synthetic rubber as a sealing material is bonded and fixed to the base 10 facing the contact portion 26 with an adhesive. Therefore, when the opening / closing door 23 closes the opening 5, the hollow packing 27 and the contact portion 26 of the opening / closing door 23 come into close contact with each other. In order to improve the watertightness of the corners of the base 10 and both side surfaces 2b of the main body case 2,
Both ends of the hollow packing 27 and corresponding abutting portions 2
6 is formed in an oblique shape.

Assembly of the upper and lower partition structure of the multi-circuit switch configured as described above will be described.

When mounting the switch main body 9 in the main body case 2, the base 10 on which the switch main body 9 is supported is arranged below the flange portion 7 in the main body case 2. After fixing the fixing member 12 to the peripheral edge of the lower surface of the base 10 with the bolts 15 via the spacer 13 and the washer 14, the lift 10 pushes the base 10 upward with respect to the main body case 2 and the hollow packing 11 and the base. Close up with 10. In this state, the fixing member 12 is attached to both side surfaces 2b and the rear side surface 2 of the main body case 2.
It is fixed to c by a bolt 17 through a washer 16. Next, the hollow packing 27 is adhered and fixed to the base 10 corresponding to the contact portion 26 of the opening / closing door 23 with an adhesive material.

Next, the main body case 2 is fixed to the fixing base 1 installed on the handhole H with the bolts 3 and the nuts 4, and the legs 18 are fixed to the fixing base 1 with the bolts 19. Further, the bent curved surface 20 of the leg 18 is fixed to the base 10 by the bolt 21.

Therefore, the switch main body 9 is kept watertight with respect to the handhole H side by the hollow packing 11, and the pressure contact state of the hollow packing 11 interposed between the flange portion 7 and the base 10 causes the open / close door 23 to be closed. By opening it, it can be easily confirmed from the opening 5. When the opening / closing door 23 closes the opening 5, the contact portion 26 of the opening / closing door 23 comes into close contact with the hollow packing 27, so that the watertightness of the handhole H is maintained. That is, the hollow packings 11 and 27 prevent moisture from entering the switch body 9 from the handhole H side.
Further, rainwater and dust from the outside do not enter due to the hollow packing 24 adhered to the inner surface of the opening / closing door 23.
As a result, it is possible to prevent the deterioration of the performance of the switch body 9, the rust of the mechanism portion 9a, the tracking phenomenon, and the like.

When it is desired to replace only the main body case 2 of the multi-circuit switch of this embodiment installed on the handhole H, the bolt 3 is used.
By removing the nut 4 and the fixing member 12, the support by the main body case 2 is lost. However, as shown in FIG. 7, the base 1 that supports the switch body 9
0 is supported by the legs 18, so the main body case 2
Only the main body case 2 can be replaced by lifting the main body case 2 with the eyebolts 8 on the upper surface 2d. Therefore, unlike the prior art, it is not necessary to disconnect the lead-in cable and replace the entire lead-in switch, and the body case 2 can be replaced very easily.

Further, in this embodiment, the hollow packing 11 made of synthetic rubber is used.
However, a filler made of water-tight silicone resin may be filled between the flange portion 7 and the base 10.

[Advantage of the Invention] As described in detail above, according to the present invention, the sealing material can surely maintain the watertightness between the upper and lower chambers, and only the main body case is provided separately from the base supporting the switch main body. Since it can be lifted and removed, it is possible to easily perform the replacement work of the sealing material interposed between the base and the flange portion and the replacement work of only the main body case.

[Brief description of drawings]

Fig. 1 is a sectional view showing the structure of the main body case of the multi-circuit switch installed on the handhole, Fig. 2 is a front view showing the main body case 2, and Fig. 3 is the base of the switch main body as the main body case. FIG. 4 is a partially enlarged sectional view showing a mounted state, FIG. 4 is a perspective view showing a state in which the base of the switch main body is attached to the main body case, FIG.
The figure is a partial cross-sectional view showing the watertight structure of the door and body case.
FIG. 6 is a sectional view taken along the line AA in FIG. 5, and FIG. 7 is a perspective view showing a state in which the switch body is supported by legs fixed to a fixed base. 1 ... Fixed base, 2 ... Main body case, 5 ... Opening, 7 ...
… Flange part, 9 …… Switch main body, 10 …… Base, 11
...... Packing as sealing material, 18 ...... Legs as supporting legs, 23 ...... Opening and closing door, 26 ...... Abutting portion, 27 ...... Hollow packing as sealing material.

Claims (1)

[Scope of utility model registration request] 1. A main body case having an opening provided with an opening / closing door on the front surface and an opening communicating with an underground handhole on the bottom surface is divided into two upper and lower chambers by a base. In the upper and lower partition structure of the multi-circuit switch that supports the switch body on the top, the support leg is erected on the fixed base installed on the handhole, and the base is supported and fixed by the support leg. On the other hand, a flange portion that engages with the base from above via a sealing material is provided on the inner surface of the main body case that is placed and fixed on the fixed base, and the base is provided inside the opening / closing door. An upper and lower partitioning structure of a multi-circuit switch, wherein an abutting portion is provided at a position corresponding to, and a sealing material is disposed on at least one of the base and the abutting portion.