JPH0143799Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for fixing a movable cover of a switch installed in a so-called power distribution tower in a vacant space within the power distribution tower when the movable cover is not in use.

This movable lid is detachably attached to the fixed electrode part of the switch installed in the power distribution tower, and has a closing lid for closing the electric circuit including between the electrodes, or an opening lid for opening it, and is always on. One of the lids (for example, a closed-circuit lid) is attached to the electrode part, and the other lid (for example, an open-circuit lid) is placed in a predetermined space within the power distribution tower.

For example, such a movable lid is a closed circuit lid.
For example, it has a configuration as shown in FIG. That is, 1 connects the lower part of the lid body 1a to the openings 1b, 1b.
The movable lid has electrodes 1c, 1c exposed in the space, and is placed over the pair of fixed electrodes of the switch to close the gap between the pair of fixed electrodes. In addition, some switches are three-pole interlocking, and in this case, multiple sets are installed in parallel, so the movable lid also has multiple sets linked together as shown in Figure 2. ing. That is, in the same figure, 1, 1' and 1'' are movable lids, and 2 is a movable lid 1, 1' and 1'', respectively, via metal fittings 3, 3' and 3'' and springs 4, 4' and 4''. The three-pole interlocking movable lid unit 5 is constituted by the integrally connected frames. This movable lid unit 5 is connected to a predetermined member in the power distribution tower by a frame 2, and by moving the frame 2 using a separate operating means, a plurality of movable lids 1, 1', and 1'' can be connected to each other. It is designed to be simultaneously attached to or removed from the fixed electrode portion of the switch.

Conventionally, such a movable lid or movable lid unit was stored in a storage box 7 as shown in FIG. 3 and placed in an empty space in the power distribution tower when not in use, that is, when not attached to the electrode part. The storage box 7 has a box body 7a,
It is equipped with legs 7b, 7b, . . . , a handle 7c, and a clasp 7d, and has extremely large external dimensions compared to the movable lid unit 5, making it heavy and promoting miniaturization of the entire power distribution tower. The problem with the storage box 7 is that it has a large exterior size like the former, and is made of metal, so it is troublesome to insert and arrange it into the gap between the rising cables in the power distribution tower. If the storage box 7 is placed in the storage box 7, the cable may hit and damage the cable during straightening work during cable connection work, which is not good for insulation. There were problems such as it was time consuming and the storage box 7 was expensive.

This invention solves the former problem, has a simple structure, allows easy holding or removal of the movable lid or movable lid unit, is lightweight, takes up almost no installation space, does not damage cables, and can be stored easily. The object of the present invention is to provide a completely new sealing and holding device for a movable lid that provides the same protective effect as when stored in a box and has advantages such as being inexpensive.

Hereinafter, one embodiment of this invention will be explained based on the drawings from FIG. 4 onwards. It is a hermetically sealed holding device for holding the power supply instead and placing it in the power distribution tower, and includes the following elements. That is, 11 is an insulating rigid substrate made of, for example, synthetic resin;
12' and 12'' are openings 1b and 1' of the movable lid unit 5 removed from the switch installed in the distribution tower.
b and 1''b (numerals 1'b and 1''b are not shown. Hereinafter, only the numerals are shown for the components of the movable lids 1' and 1''). material, and is fixed to the upper surface of the rigid substrate 11 by bolts 13, 13, . . . and nuts 14, 14, . . . This buffer member 12,
12' and 12'', each movable lid 1, 1'
and each lower end surface 1d defining the openings 1b, 1'b and 1"b of the lid body 1a, 1'a of 1" and 1"a,
1′d and 1″d are placed. 16, 16 are holding arms provided on the rigid substrate 11, and movable lids 1,
1' and 1'', and when it comes into contact with the movable lid 1', the movable lid 1' and the other movable lids 1 and 1'' are simultaneously moved by each buffer member 12,
12' and 12''. Specifically, each holding arm 16 has an inverted U shape with a finger hook 16a formed at the upper part.
The lower end 16b is inserted into a long hole 19a formed in an arm support fitting 19 fixed to the rigid substrate 11 with a bolt 17 and a nut 18, and a washer 21 and a pin 2 are inserted into the lower end 16c.
2 is attached, and a stopper pin 23 protrudes from the upper portion of the arm support fitting 19. The holding arm 16 is connected to the sixth
It can swing in the vertical direction in the figure, that is, in the horizontal direction in FIG. Further, 24 is a spring wound around the outer circumference of the lower part 16b of the holding arm 16 between the arm support fitting 19 and the washer 21, which constantly urges the holding arm 16 downward, that is, holds the holding arm 16 in an upright state. However, when the movable lid 1' comes into contact with the central upper part 1'e of the movable lid 1', the movable lid 1' is held in a pressed state against the buffer member 12'.

This invention has the above structure, and the method of using this movable lid holding device 10 is as follows. That is, first, the movable lid unit 5 is removed from the switch, and while its openings 1b, 1'b and 1''b are directed toward the buffer members 12, 12' and 12'', respectively, the finger hooks 16a and 16a are Put your finger on the chain line 16' in Figure 4,
The holding arms 16, 16 are pushed apart as shown at 16'. Next, each movable lid 1 of the movable lid unit 5,
1' and 1'' on the respective buffer members 12, 12' and 12'', and the finger hooks 16a,
16a is pulled up against the springs 24, 24 and guided to the central upper part 1'e, 1'e of the movable lid 1', that is, from the chain line positions 16', 16' in FIG. 4 to the solid line positions 16, 16. After the finger is displaced to , release the finger from the finger hooks 16a, 16a. Then, since the holding arms 16, 16 are constantly pulled downward by the spring 24, the horizontal part 16d presses the central upper part 1'e of the movable lid 1', and the movable lid 1' and other movable lids are 1 and 1″ at the same time as the buffer member 1
2', 12 and 12'' to securely hold it, and each opening 1b of the movable lid 1, 1' and 1''.
1'b and 1''b are buffer members 12, 12' and 1
2'' creates a completely sealed state, preventing dust from entering through the openings 1b, 1'b and 1''b. Further, this holding device 10 has a rigid substrate 1
1. The simple structure consisting of the buffer members 12, 12' and 12'' and the holding arm 16 does not take up much space, so it can be easily installed in the distribution tower, especially in the gap between the rising cables. When installed in a switch, the insulation on the surface of the movable lid must be maintained, and if dust or scratches were to adhere to the surface, the insulation performance would deteriorate, so conventionally the purpose was to prevent this. Since then, the method of storing it in a storage box has been adopted.However, in recent years, the surface of the movable lid has been subjected to conductive treatment in advance, so
In view of the insulation effect, it is no longer necessary to take precautions to prevent scratches or dust from adhering to the movable lid, so it is no problem to leave the outer surface of the movable lid exposed to the atmosphere as in this invention. be. When removing the movable lid unit 5 from the holding device 10, pull up the holding arms 16, 16 upward against the springs 24, 24, . . . as shown by chain lines 16', 16' in FIG. All you have to do is push it out and lift the movable lid unit 5 upwards.

As explained above, the movable lid seal holding device according to this invention includes a buffer member that seals the opening of the movable lid that is removed from a switch installed in the power distribution tower on an insulating rigid substrate, and Since the structure is provided with a holding arm that can freely come into contact with and separate from the lid and that holds the movable lid in a state in which it is pressed against the buffer member when in contact with the movable lid, (a) the structure is simple and the movable lid or movable lid unit is can be easily held and removed by simply operating the holding arm, (b) the weight is small, so it is easy to carry when holding the movable lid unit, and (c) the external dimensions are small, so it can be easily carried inside the power distribution tower. (d) Modern movable lids with conductive treatment on the surface provide the same protection as when stored in a conventional storage box. e) Moreover, it has excellent advantages such as being inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of a movable lid, Fig. 2 is a perspective view of a movable lid unit in which a plurality of movable lids are connected, Fig. 3 is a perspective view showing a conventional example of a storage box for a movable lid unit, and Fig. 4 is a perspective view of this device, FIG. 5 is a front view with the same part omitted, FIG. 6 is a plan view of the same, FIG. 7 is a sectional view taken along line A-A in FIG. FIG. In the figure, 1, 1', 1'' are movable lids, 1b is an opening, 11 is a rigid substrate, 12, 12', 12'' are buffer members, 16 is a holding arm, 19 is an arm support fitting, and 19a is a length. The hole 24 is a spring.

Claims (1)

[Scope of utility model registration request] Two quadrilateral frame-shaped arm support fittings are provided at intervals on a rigid substrate, and the lower portions of the two approximately inverted U-shaped holding arms are inserted into elongated holes bored in the upper surface of these arm support fittings. A spring that biases the lower part of the holding arm toward the rigid board is wound around the outer periphery of the lower part of the holding arm between the washer fixed to the lower end of each of these lower parts and the upper plate of the arm support bracket around the above-mentioned elongated hole. A stopper pin is provided protruding from the outer periphery of the lower part of each upper holding arm, the holding arm is swingably supported by two arm support fittings, and a buffer member is fixed on the rigid substrate.
A sealing device for the movable lid of the switch.