JPH10256739A - Apparatus for telescoping electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce amount of adjustment with a simple structure having high force transmitting efficiency by providing an engaging member which is provided at least at one end of a telescopic shaft for moving an electronic equipment in a housing by rotating the shaft in engagement with a cam. SOLUTION: One ends of driving links 32a, 32b are mounted at both ends of a circuit breaker 2 of a telescopic shaft 14 protruding from both flanges 31a, 31b of the breaker 2, telescopic pins 33a, 33b are projected outwards as engaging members at its ends, and engaged with cams 4a, 4b provided on the inner surfaces of both the sidewalls of a distribution board. Only two movable members of a driving link 30 and the shaft 14 are present on a force transmission route from the shaft 5 for giving a rotary force by a jig to the pins 33a, 33b for giving moving force with respect to the breaker 2. As a result, the breaker 2 can be moved easily with a small force. Accordingly, a force transmitting efficiency is high, and the amount of adjustment is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for inserting and removing an electric device such as a circuit breaker housed in a housing such as a switchboard in a predetermined direction by manual operation.

[0002]

2. Description of the Related Art For example, in a large circuit breaker housed in a power distribution panel, there is a type in which the circuit breaker is movable in the power distribution panel. For example, when starting the circuit breaker, by moving the circuit breaker to a predetermined operation position, the electrical contacts between the wiring of the switchboard and the circuit breaker are closed, and the circuit breaker shifts to the operation state. I do. Conversely, when stopping the operation of the circuit breaker, by retracting the circuit breaker from the operation position to the stop position, the electrical contacts between the wiring of the switchboard and the circuit breaker are opened, and the circuit breaker is stopped. Transition.

More specifically, as shown in FIG. 3, a large circuit breaker 2 is housed in a large switchboard 1. Wheels 3a and 3b are attached to the circuit breaker 2, and are supported movably in the direction of arrow A in the figure. The state shown in FIG. 3 indicates a state in which the circuit breaker 2 is located at the “stop position” retracted in the switchboard 1, and a state in which the circuit breaker 2 is moved from the “stop position” to the back of the switchboard 1 is “ It is referred to as a state of being located at the "operating position".

An access device for manually moving the position of the circuit breaker 2 to the "operation position" or the "stop position" is incorporated in the circuit breaker 2 and the switchboard 1. Next, a description will be given of a device for putting in and taking out the electric device (the circuit breaker 2).
Switchboard 1 facing each side 2a, 2b of circuit breaker 2
The inner surfaces 1a and 1b of both side walls of the
The cams 4a and 4b having a U-shape are attached.

FIG. 5A is a front view of the circuit breaker 2 as viewed from the back surface 2c side, and FIG.
It is the side view seen from b side. FIG. 6A is an enlarged front view showing a main part of the access device, and FIG.
(B) is a side view which expands and shows the principal part of the putting-in / out apparatus.

FIG. In FIG. 6, the operation shaft 5 is vertically attached to the back surface 2c of the circuit breaker 2. Specifically, the thrust bearing 7b, the support pin 8, and a pair of fixing plates 9a, 9b arranged in the vertical direction are fixed to the plate member of the back surface 2c of the circuit breaker 2 by double nuts 6a, 6b, and the free end side The operation shaft 5 is attached to the outside of the double nut 6a via another thrust bearing 7a.

Therefore, the operating shaft 5 is freely rotated around its own axis by the thrust bearings 7a and 7b. The operating shaft 5 is freely rotated by the support pin 8 in the vertical direction indicated by the arrow B in the figure.

[0008] At the tip of the operation shaft 5, a bolt head 5a for rotating the operation shaft 5 by an operator using a jig such as a hexagon wrench is formed. A male screw 10 is engraved on the outer periphery of the operation shaft 5. Drive plates 13a, 13 which rotate in a vertical plane on a nut 11 on which a female screw meshing with the male screw 10 is engraved.
b is rotatably supported via a pin 12.

In addition, an access shaft 14 that penetrates the circuit breaker 2 is provided in a direction orthogonal to the direction of movement of the circuit breaker 2 as indicated by the arrow A. The drive plate 13 is attached to a lever 15 attached to the shaft 14.
a and 13b are fixed with a pair of screws.

Therefore, when the operator rotates the operation shaft 5 clockwise using a jig such as a hexagon wrench, the position of the shaft 14 is fixed.
The nut 12 moves to the left in the drawing, and the drive plates 13a, 1
3b pivots clockwise, resulting in the access shaft 14 pivoting clockwise. In this case, the operation shaft 5 rotates slightly downward.

As shown in FIG. 5, drive links 16a and 16b are attached to both ends of the shaft 14 which penetrates the circuit breaker 2 and are exposed to the side of the circuit breaker 2. Nuts 18a and 18b for distance adjustment provided at one end of the drive levers 19a and 19b are engaged with pins 17a and 17b attached to tips of the drive links 16a and 16b.

A fixing pin 2 is provided on a plate material on the front surface 2d of the circuit breaker 2.
Triangular links 21a and 21b are pivotally supported via Oa and 20b, and the other ends of the drive levers 19a and 19b are locked to pins 22a and 22b of the triangular links 21a and 21b. In addition, one end of each of the triangular links 21a, 21b has an insertion / extraction pin 23a, 23b protruding outward. Then, the insertion / removal pin 2 protruding from the outside
3a and 23b are engaged with cams 4a and 4b having an inverted L-shape provided on the inner surfaces 1a and 1b of both side walls of the switchboard 1.

Therefore, when the drive levers 19a, 19b move downward, the triangular links 21a, 21b rotate around the fixing pins 20a, 20b, and the insertion / removal pins 23
a, 23b contact the cams 4a, 4b,
In FIG. 5B, a force is applied to move b to the left. However, since the switchboard 1 is fixed to the base, as a result, the circuit breaker 2 moves rightward (retreats).

Therefore, when the circuit breaker 2 is retracted from the "operating position" to the "stop position", the operator rotates the operating shaft 5 clockwise using a jig such as a hexagon wrench so that the operating shaft 5 can be removed. 6B rotates clockwise in FIG. 6B, the drive levers 19a and 19b move downward, and the triangular links 21a and 21b rotate clockwise,
The circuit breaker 2 moves back to the "stop position".

On the other hand, when the circuit breaker 2 is advanced from the "stop position" to the "operating position", the operator rotates the operating shaft 5 counterclockwise using a jig such as a hexagon wrench, and then moves the shaft in and out. 6 rotates counterclockwise in FIG. 6B, the drive levers 19a and 19b move upward, the triangular links 21a and 21b rotate in the opposite direction, and the circuit breaker 2 advances to the "operation position". I do.

[0016]

However, the electric equipment insertion / removal device having the above-mentioned structure still has the following problems to be solved. That is, the movement is transmitted until the circuit breaker 2 actually moves from the “stop position” to the “operation position” or from the “operation position” to the “stop position” after the operator rotationally drives the operation shaft 5. There are many members that Therefore, an excessive force is required to operate each member, and the transmission efficiency of the force is reduced due to the presence of a backlash or the like at the time of transmission, or the time required for the circuit breaker 2 to actually move after the operation is operated. There is a concern that delays will occur.

Also, in order to connect the movable members and operate them smoothly, a large number of adjusting parts are required, which not only complicates the entire apparatus but also requires a great deal of work time for manufacturing and assembling. .

The present invention has been made in view of such circumstances, and the force transmission efficiency is increased by reducing the number of movable members existing in the force transmission path from the operation shaft to the cam of the housing as much as possible. It is another object of the present invention to provide an inexpensive electric device insertion / removal device that has a simple configuration and can minimize adjustment.

[0019]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an electric device insertion / removal device for moving a position of an electric device housed in a housing between an operation position and a stop position. A support mechanism for movably supporting the electric device in the moving direction in the housing, a cam fixed in the housing,
An access shaft that penetrates the electric device in a direction perpendicular to the moving direction, an operation shaft attached to the electric device and parallel to the moving direction, and an operation of converting a rotation operation applied to the operation shaft into a rotation operation of the insertion / removal shaft. It has a direction changing mechanism and an engagement member provided at at least one end of the insertion / removal shaft and for moving the electric device within the housing by rotating the insertion / removal shaft while being engaged with the cam.

In the electric device insertion / removal device configured as described above, when the operator rotates the operation shaft, the operation direction conversion mechanism operates to rotate the input / output shaft. At least one end of the shaft is provided with an engaging member that engages with a cam fixed in the housing.

Therefore, when the shaft is rotated, a force acts between the engaging member and the cam. in this case,
Since the housing is fixed to the base and the electric device is movably supported by the support mechanism, the electric device moves without moving the housing. That is, the electric device moves in the housing between the “operating position” and the “stop position”.

In this case, since the engaging member that directly engages with the cam is provided on the insertion / removal shaft, the number of movable members existing on the force transmission path can be greatly reduced as compared with the conventional device.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1A is a front view of a circuit breaker as an electric device in which an electric device insertion / removal device according to an embodiment of the present invention is incorporated, and FIG. 1B is a side view of the circuit breaker. FIG. 2A is a front view of a main part of the electric equipment insertion / removal device, and FIG. 2A is a side view of the main part.

The same parts as those of the conventional electric equipment insertion / removal device shown in FIGS. 5 and 6 are denoted by the same reference numerals.
Therefore, the detailed description of the overlapping part is omitted. The housing in this embodiment is the same as the switchboard 1 shown in FIG. 3, and includes the switchboard 1 and a circuit breaker 2 as an electric device.
Is also as shown in FIG. Further, cams 4a, 4b having an inverted L-shape as shown in FIG. 4 are attached to the inner surfaces 1a, 1b of both side walls of the switchboard 1 facing the respective side surfaces 2a, 2b of the circuit breaker 2.

FIG. In FIG. 2, the thrust bearing 7b and the support pin 8 are connected to the circuit breaker 2 by double nuts 6a and 6b.
The operation shaft 5 is fixed to the plate member of the back surface 2c of the first embodiment, and is outside the double nut 6a on the free end side via another thrust bearing 7a.

Therefore, the operation shaft 5 is freely rotated around its own axis by the thrust bearings 7a and 7b. The operating shaft 5 is freely rotated by the support pin 8 in the vertical direction indicated by the arrow B in the figure.

At the tip of the operation shaft 5, a bolt head 5a for rotating the operation shaft 5 by an operator using a jig such as a hexagon wrench is formed. A male screw 10 is engraved on the outer periphery of the operation shaft 5. Arms 30a and 30b of a drive link 30 that rotates in a vertical plane are rotatably supported via pins 12 on a nut 11 provided with a female screw meshing with the male screw 10.

An access shaft 14 that penetrates the circuit breaker 2 is provided in a direction orthogonal to the direction of movement of the circuit breaker 2 in FIG. The access shaft 14 is supported by flanges 31a and 31b on side plate members on the side surfaces 2a and 2b of the circuit breaker 2. The shaft 14 is fixedly inserted into a through hole formed in the drive link 30.

Therefore, when the operator rotates the operation shaft 5 clockwise using a jig such as a hexagon wrench, the position of the insertion / removal shaft 14 is fixed, and the nut 12 moves to the left in the figure. And drive link 3
0 rotates clockwise, and the shaft 14 rotates clockwise. In this case, the operation shaft 5 rotates slightly downward.

As shown in FIGS. 1 (a) and 1 (b), both ends of the shaft 14 which penetrates the circuit breaker 2 and protrudes from the flanges 31a, 31b on both sides of the circuit breaker 2 are provided with drive links 32a, 32b. One end is attached, and insertion / removal pins 33a, 33b as engagement members are protruded outward from the distal ends of the drive links 32a, 32b. Then, the insertion / removal pin 33 protruding from the outside
a, 33b are engaged with cams 4a, 4b having an inverted L-shape provided on inner surfaces 1a, 1b of both side walls of the switchboard 1.

Therefore, the taking-in / out shaft 14 corresponds to FIG.
When rotated clockwise in (b), the drive link 3
The insertion / removal pins 33a, 33b at the tips of 2a, 32b abut against the cams 4a, 4b, and a force acts to move the cams 4a, 4b to the left. However, since the switchboard 1 is fixed to the base, the switchgear 2 moves rightward (retreats) without moving the switchboard 1 as a result.

Therefore, when the circuit breaker 2 is retracted from the "operation position" to the "stop position", the operator rotates the operation shaft 5 clockwise using a jig such as a hexagon wrench, and the drive link 30 is rotated. 2B moves leftward in FIG. 2B, the insertion / removal shaft 14 rotates clockwise in FIG. 2B, the drive links 32a and 32b rotate clockwise, and the insertion / removal pins 33a and 33b at the tips. Engages with the cams 4a and 4b of the switchboard 1, and the circuit breaker 2 retreats to the "stop position".

On the other hand, when the circuit breaker 2 is advanced from the "stop position" to the "operating position", the operator rotates the operating shaft 5 counterclockwise using a jig such as a hexagon wrench, and then moves the operating shaft 5 in and out. 2 rotates counterclockwise in FIG. 2 (b), the drive links 32a and 32b rotate counterclockwise, and the leading pins 33a and 33b engage with the cams 4a and 4b of the switchboard 1, The circuit breaker 2 advances to the “operation position”.

In the electric device insertion / removal device configured as described above, the operator uses a jig such as a hexagon wrench to rotate the operation shaft 5 from the operation shaft 5 to the insertion / removal pins 33a and 33b for providing the moving force to the circuit breaker 2. There are only two movable members, the drive link 30 and the access shaft 14, in the force transmission path between them.

Therefore, the driving plate 1 shown in FIGS.
3a, 13b, lever 15, access shaft 14, drive links 16a, 16b, drive levers 19a, 19b,
The configuration is greatly simplified as compared with the conventional device having the triangular links 21a and 21b.

As a result, since an excessive force is not required to operate each movable member, the circuit breaker 2 can be easily moved with a small force. In addition, since the presence of backlash or the like can be reduced as much as possible when transmitting force, the circuit breaker moves immediately after the operation, and high operation response performance can be secured.

Further, since there are almost no parts that need to be adjusted, not only the entire apparatus can be simplified, but also the manufacturing and assembling is simple, and the manufacturing cost of the entire apparatus can be greatly reduced.

The present invention is not limited to the above embodiment. In the embodiment, the housing is the switchboard 1 and the electric device is the circuit breaker 2, but the invention is not limited thereto. For example, the electric device may be a power supply device, a rectifier, a large transformer, or the like.

[0039]

As described above, in the electric device insertion / removal device according to the present invention, the transmission of the force between the operating shaft that is rotated by the operator and the engaging member for the cam that gives the moving force to the electric device. The number of movable members interposed in the path is reduced as much as possible. Therefore, the power transmission efficiency is high, the configuration is simple, the adjustment can be minimized, and the entire apparatus can be configured at low cost.

[Brief description of the drawings]

FIG. 1 is a view showing the front and side surfaces of an electric device in which an electric device insertion / removal device according to an embodiment of the present invention is incorporated.

FIG. 2 is a view showing the front and side surfaces of the main part of the electric device insertion / removal device according to the embodiment;

FIG. 3 is a diagram showing a positional relationship between a housing and an electric device.

FIG. 4 is a diagram showing a cam formed on an inner surface of a housing.

FIG. 5 is a diagram showing the front and side surfaces of an electric device in which a conventional electric device insertion / removal device is incorporated.

FIG. 6 is a diagram showing the front and side surfaces of the main part of the conventional electrical equipment access device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Distribution board 2 ... Circuit breaker 3a, 3b ... Wheel 4a, 4b ... Cam 5 ... Operating shaft 5a ... Bolt head 6a, 6b ... Double nut 7a, 7b ... Thrust bearing 8 ... Support pin 10 ... Male screw 11 ... Nut 12 ... Pin 14 ... In / out shaft 30, 32a, 32b ... Drive link 33a, 33b ... In / out pin

Claims (1)

[Claims] 1. An electric device insertion / removal device for moving a position of an electric device stored in a housing between an operation position and a stop position, wherein the electric device is movably supported in the moving direction in the housing. A support mechanism, a cam fixed in the housing, an access shaft that penetrates the electric device in a direction orthogonal to the movement direction, and an operation shaft attached to the electric device and parallel to the movement direction, An operation direction conversion mechanism for converting a rotation operation applied to the operation shaft into a rotation operation of the insertion / removal shaft; provided at at least one end of the insertion / removal shaft, wherein the input / output shaft rotates while being engaged with the cam; And an engaging member for moving the electric device within the housing.