JPS5926980Y2 - switch switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch opening/closing device that opens and closes a switch by opening and closing a door, and particularly relates to a switch opening/closing device that is free from creep deformation of the door.

An example of a conventional door opening/closing switch opening/closing device will be described with reference to FIGS. 1 and 2.

In the switch opening/closing device, the following three points are necessary for the switch opening/closing operation by opening/closing the door.

The following three conditions are called necessary for opening and closing operations.

Condition (1): When the door is opened, the switch is turned off.

(In the conventional switch opening/closing device, the switch knob is not pressed.) 1st I condition: When the door is closed, the switch is always on.

(In the conventional switch opening/closing device, the switch knob is pressed.) Condition 1II: When the door is closed, the switch is selectively turned off.

(In a conventional switch opening/closing device, the switch knob is not pressed.) In Fig. 1, a non-locking button switch 4 that utilizes the elasticity of a spring 14 has a frame (hereinafter simply referred to as the frame) 1 of the switch opening/closing device. It is fixed by screws or other means.

The knob 3 is a columnar member, and one end is fitted into an operator (not shown) of a non-locking button switch 4.
It is engaged with the case of the non-locking bushing switch 4 via a spring 14 and is elastically coupled to the non-locking bushing switch.

The other end of the knob 3 passes through a hole 15 formed in the frame 1, projects outside the frame, and extends toward the door 2 (details will be described later).

Therefore, when no external force is applied to the knob 3, the knob 3 is guided into the hole 15 by the force of the spring 14 to a position away from the non-locking bushing switch 4, that is, the position indicated by the dashed line ( (hereinafter referred to as a position far from the switch).

The non-locking bush switch 4 is configured to be in an OFF state when the knob 3 is located far from the switch.

The door 2 is supported by a shaft 1a fixed to the frame 1 so as to be openable and closable.

The selector 10 is made up of a block with steps, and is connected to the door 2.
inside the direction indicated by arrow 12 in FIG.
That is, it is attached to the door 2 so as to be slidable vertically between a first position and a second position.

Moreover, the position of the selector 10 is as follows.

That is, when the selector 10 is located at the first position,
When the door 2 is closed, the high part 10a of the selector
is engaged with the free end of the knob 3, and when the selector 10 is in the second position, the lower portion 10b of the selector is in a position facing the free end of the knob 3.

Therefore, when the selector 10 is in the first position and the door 2 is closed, the high part 10a of the selector faces the free end of the knob and engages the free end of the knob 3, causing the knob to spring 14 The non-locking bushing switch is pushed against the force to a position (indicated by a solid line) approaching the switch (hereinafter referred to as the position approaching the switch), and in this state the non-locking bushing switch is in the on state.

Furthermore, even if the door 2 is closed when the selector is in the second position, the lower part 10b of the knob faces the free end of the knob, and the knob is not obstructed by the selector 10 and is released from the switch by the spring 14. It is pushed out to a far position, and the non-locking bushing switch 4 is turned off.

The operation of the conventional switch opening/closing device configured as described above will be explained for each of the three necessary conditions for the opening/closing operation. Under the first condition, the door 2 is open, so the knob 3 is in a free state, and the spring 14 The position is far from the switch, and the non-locking bushing switch 4 is turned off.

In the first condition, the selector 10 is located at the first position, and when the door 2 is closed, the high part 10a of the selector pushes the knob 3 toward the switch against the spring 14, and the non-locking button switch is activated. 4 is turned on.

Further, in the above-mentioned condition 1II, the selector 10 is located at the second position and the knob 3 is activated by the spring 14 even when the door 2 is closed.
The non-locking bushing switch is pushed out to a position far from the switch, and the non-locking bushing switch is turned off.

The conventional switch opening/closing device configured as described above satisfies the three necessary conditions for the switch opening/closing operation described above.
Under the 1st I condition, the force of the spring 14 is always applied to the door 2, and since the switch opening/closing device is under the 1st I condition during normal use and shipping, the door is not affected by environmental changes such as temperature changes. There are problems such as creep deformation, and in order to solve the above drawbacks, conventional technology reduces the spring force and uses expensive materials that are of good quality and are resistant to thermal deformation due to temperature, resulting in high production costs. There was a drawback.

The purpose of the present invention is to eliminate the drawbacks of the prior art described above, eliminate the factors that cause creep deformation of the door, and provide a mechanism that satisfies the three necessary conditions for the opening/closing operation of a non-locking bushing switch, while reducing costs. An object of the present invention is to provide a switch opening/closing device.

The switch opening/closing device of the present invention is constructed as follows in order to improve the above-mentioned conventional problems.

(1) At the time of shipment and under normal use (door open),
The door has a structure that does not apply spring force.

(2) When the door is opened, the door pushes the knob against the force of the spring.

Therefore, the non-locking bushing switch of the present invention is configured to turn off when the knob is pressed and approaches the switch.

(3) In the present invention, the selector, which was conventionally provided on the door, is attached to the frame, and the door is structured so that the force of the spring is not applied at any time (the force of the spring is received by the selector).

(4) By configuring the switch opening/closing device of the present invention as described above, it has a structure that can satisfy the three necessary conditions for the opening/closing operation.

An embodiment of the present invention will be described with reference to FIGS. 3 and 4.

The knob 3' is attached to the frame 1 so as to be movable in the axial direction of the knob 3' as shown by an arrow 8.

The knob 3' has a knob inclined portion 3'b on an inclined surface that is inclined with respect to the direction of movement of the knob, and a knob inclined portion 3'.
A knob columnar part 3'C located away from 'b and extending in the direction of movement of the knob, and a knob system part 3d that extends in the direction of movement of the knob 3' by combining the knob inclined part 3'b and the knob columnar part 3c'. ' is integrally constructed and is a substantially Y-shaped member.

The inclined surface of the knob inclined part 3'b is the knob inclined part 3b'.
The knob convex portion 3 is inclined so that the width of the free end becomes narrower, and the inclined surface extends beyond this free end at the free end of the knob inclined portion 3'b, forming a concave portion at the tip of the knob inclined portion. /a is formed.

A force is always applied to the knob 3' by a spring 14 such that the knob inclined portion 3'b and the knob columnar portion 3'c protrude toward the door 2 from their respective dedicated holes provided in the frame 1.

The other free end of the knob stem portion 3d' is coupled to an operator (not shown) of a non-locking bushing switch by fitting or the like.

The door 2 is attached to the frame 1 so as to be rotatable as shown by an arrow 7 about a rotation center 6, and the door is opened and closed.

Reference numeral 2a denotes a door protrusion, which extends substantially perpendicularly inward from the inner surface of the door 2, and has a protruding door protrusion 2b at its free end that engages with the knob protrusion 3'a, as will be described in detail later. has been done.

That is, the door protrusion 2a does not engage the knob inclined portion 3'b at all in the door open state shown by the dashed line in FIG. 3, but when the door 2 is centered around the rotation center 6 shown by the solid line When the door begins to rotate to the open state, the free end of the door protrusion 2a engages with the slope of the knob slope 3'b, causing the knob slope 3'b to move against the spring 14. When the door 2 is pushed into the frame and the door 2 is opened, the convex portion 2b is moved to the knob convex portion 3 using play 9 of the switch operation (position indicated by the two-dot chain line) provided in advance. '
a, engages with the knob protrusion 3'a, and locks the knob inclined part 3b' in the position shown by the solid line.

The selector 5 has a selector hole 5 in a part as shown in FIG.
It is a plate-like member with a hole a, and is attached to the frame 1 so as to be slidable in the vertical direction as shown by the arrow 13.

In FIG. 4, in the first position where the selector 5 is pushed upward, the flat plate part of the selector 5 is located in the passage of the knob inclined part 3'c, and the knob columnar part 3'c resists the force of the flap 14. It is held in the position pushed into the frame.

In this position, the selector protrusion 5b protruding from the selector 5
engages with a recess provided in the frame, and the selector 5 is locked in the first position.

When opening and closing the linon lock push switch 4 by opening and closing the door 2, the selector 5 is pushed down to the second position.

When the selector is in the second position, the selector hole 5a is located in the passage of the knob columnar part 3'c, and the knob columnar part 3'c freely moves through the selector hole 5a, and when the door is opened, The non-locking bushing switch 4 is turned on.

Knob inclined part 3'b indicated by a dashed line in Fig. 3
The position of the knob columnar portion 3'C indicates the position where the knob 3' protrudes from the frame body by the spring 14.

In the above embodiment of the present invention, when the knob 3' is pushed into the frame against the spring 14, the non-locking bushing switch 4 is turned off;
The non-locking bushing switch is configured to turn on when the bushing is pushed out of the frame, satisfying the three conditions necessary for the above-mentioned opening/closing operation.

Furthermore, as described above, in one embodiment of the present invention, when the door is closed, the force of the spring 14 is not applied to the door, so problems such as creep deformation do not occur.

According to the present invention, the following effects can be obtained.

(1) The spring force used to operate the switch is designed to prevent the door from becoming loose at any time, not only when the door is closed, so problems such as deformation and warping do not occur.

(2) There is no need to lower the spring force in consideration of door deformation, and there is no need to use high-quality materials that are less susceptible to thermal deformation due to temperature; it is possible to select from inexpensive materials and reduce costs. .

For example, there are examples where material costs were reduced by about 30%.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the structure of a conventional switch opening/closing device.
Fig. 2 is a front view showing the inside of the door of the switch opening/closing device shown in Fig. 1, Fig. 3 is a sectional view showing the structure of the switch opening/closing device according to the present invention, and Fig. 4 is the switch shown in Fig. 3. FIG. 3 is a plan view of the opening/closing device seen from direction A. FIG. Explanation of symbols 1...Frame body, 1a...Shaft, 2a...Door protrusion, 2b...Door protrusion, 3, 3'... ...Knob, 3a'...Knob convex part, 3'b...Knob sloped part, 3'c
...Knob columnar part, 3'd...Knob stem part, 4...Non-lock button switch, 5...Selector, 5a...・Selector hole, 9...Non-lock button switch hole, 10...Selector, 10a...
High part, 10 b...low part.

Claims (4)

[Scope of utility model registration request] (1) In a switch opening/closing device in which the opening/closing operation of the door of the switch opening/closing device operates a knob slidably attached to the frame of the switch opening/closing device to turn the switch on or off, the door provided on the door an engaging body; a knob inclined portion including an inclined surface that engages with the door engaging body to move the knob from one position to the other position and locks the knob in that position; and a selector that selectively engages with the knob to lock the knob in the other position. (2) Utility Model Registration Scope of Claims In the switch opening/closing device according to claim 1, the door holder includes a door protrusion that protrudes inward from the door and engages with the inclined surface of the knob, and the door protrusion. A switch opening/closing device comprising: a door protrusion protruding from the free end of the switch. (3) Utility Model Registration Scope of Claims 1. In the switch opening/closing device according to claim 1, the knob inclined portion is provided with an inclined surface that is inclined with respect to the moving direction of the knob, and the inclined surface is provided at the free end of the knob inclined portion. 1. A switch opening/closing device characterized in that a knob convex portion that extends beyond the free end of the knob slope portion and forms a concave portion is provided. (4) Utility Model Registration In the switch opening/closing device according to claim 1, the selector is attached to a frame of the switch opening/closing device so as to be slidable between a first position and a second position;
In the second position of the selector, the selector is located in a passage of a knob column fixed to the knob to prevent the knob from moving, and in the first position of the selector, the knob is configured to be able to move freely. Features a switch opening/closing device.