JPH0648306U - Door switch for closed switchboard - Google Patents

Abstract

(57) [Summary] [Purpose] No key is required without a handle on the door. [Structure] A lock pin 3 which is provided in a frame body 1 of a closed switchboard so as to be retractable and has an inclined surface 4 formed at a tip end thereof, a pin spring 5 which biases the lock pin 3 in an outgoing direction, and a lock by an open signal. An electromagnet for setting the pin 3 in the retracted state, and a lock fitting 9 provided on the door 8 for contacting the inclined surface 4 of the lock pin 3 to move the lock pin 3 in the retracted direction and to lock the lock pin 3 on the back of the inclined surface 4.
A door spring 6 for urging the door 8 in the opening direction, and a plurality of push button switches 13 provided on the front surface of the door 8 for outputting the open signal by a combination of on and off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door opening / closing device for a closed switchboard in which the door of the switchboard is opened by a push button switch.

[0002]

[Prior art]

 A conventional door opening / closing device for a switchboard is opened and closed by rotating the handle attached to the door forward and backward, and a locking device with a key is provided on the handle so that it cannot be opened by anyone other than those concerned. Stakeholders carry the key.

[0003]

[Problems to be solved by the device]

 In the case of the conventional door opening / closing device for the closed switchboard, since the lock device by the key is provided, the person concerned has to carry the key, which is complicated, and there is a problem that the key is forgotten or lost. is there. The present invention has been made in view of the above points, and an object thereof is to provide a door opening / closing device for a closed switchboard which does not require a handle on the door and does not require a key.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a lock pin which is provided in a frame body of a closed switchboard so as to be retractable and has an inclined surface at a tip end thereof, and a pin spring which biases the lock pin in an outward direction. And an electromagnet that makes the lock pin in a retracted state by an open signal, and an abutment on the inclined surface of the lock pin that is installed on the door to move the lock pin in the retracted direction and engage the back of the inclined surface. A lock fitting for stopping, a door spring for urging the door in the opening direction, and a plurality of push button switches provided on the front surface of the door for outputting the open signal by a combination of on and off.

[0005]

[Action]

 The door opening / closing device for the closed switchboard according to the present invention configured as described above only pushes the door when the door is closed, and the lock fitting of the door abuts against the inclined surface of the lock pin to press the lock pin. When the door is closed against the spring and the door is closed, the lock fitting is located behind the lock pin, the lock pin is pulled out by the pin spring, and the lock fitting is engaged with the lock pin. The door is closed and the closed state of the door is maintained.

Next, when the door is opened, a plurality of push button switches on the front surface of the door are turned on and off, and an open signal is output according to the combination of the on and off, and the electromagnet is activated by the open signal to activate the lock pin. And the door is automatically opened by the door spring.

[0007]

【Example】

 One embodiment will be described with reference to FIGS. 1 to 3. In these drawings, 1 is a frame body of a closed switchboard, 2 is a lock box fixed to the back surface of the frame body, 3 is a lock pin provided in the lock box 2 so as to be retractable in the left and right directions, and 4 is a lock pin 3 An inclined surface 5 formed at the tip of the lock pin 3 is a pin spring that biases the lock pin 3 in the outgoing direction, and the lock pin 3 is moved to the retracted state by an electromagnet (not shown) that is activated by an open signal. It Reference numeral 6 is a door spring having one end fixed to the front surface of the frame 1, and 7 is an open plate fixed to the other end of the door spring 6.

Reference numeral 8 is a door of the closed switchboard, 9 is a lock fitting fixed to the back surface of the door 8, 10 is an inclined surface formed at the tip of the lock fitting 9, and is in contact with the inclined surface 4 of the lock pin 3, and 11 is an inclined surface. Insertion holes formed in the slope 10 in the left-right direction, and 12 are spring fittings provided on the back surface of the door 8. Reference numeral 13 is a plurality of push button switches provided on the front surface of the door 8, and 14 is a reset push button switch, which outputs an open signal for activating the electromagnet depending on the combination of ON and OFF of each switch 13.

Then, when the door 8 is pushed when the door 8 is closed and the door 8 is open as shown in FIG. 2, the spring receiving metal fitting 12 abuts against the open plate 7 and presses the door spring 6, and at the same time, the locking metal fitting. When the inclined surface 10 of 9 contacts the inclined surface 4 of the lock pin 3 and presses the lock pin 3, the lock pin 3 is moved against the pin spring 5 in the retracted direction, and the door 8 is closed. The lock pin 3 is inserted into the insertion hole 11 of the lock fitting 9, the lock pin 3 is brought out by the pin spring 5, the lock fitting 9 is locked to the lock pin 3, and the closed state of the door 8 is maintained. It

Next, when the door 8 is opened, a plurality of push button switches 13 and 14 on the front surface of the door 8 are turned on / off to output an open signal according to the combination of the on / off, and the electromagnet is output by the open signal. Is activated, the lock pin 3 is retracted, and the door spring 6 automatically opens the door 8. The formation of the open signal by the plurality of push button switches 13 and 14 is performed by, for example, pressing the reset push button switch 14 and then pressing the plurality of switches 13 once when the switch 13 is turned on and when the switch 13 is turned off. It is performed by pressing as two pressings.

[0011]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. The door opening / closing device of the closed switchboard according to the present invention only pushes the door 8 when the door 8 is closed, and the lock fitting 9 of the door 8 abuts the inclined surface 4 of the lock pin 3 to press the lock pin 3, The lock pin 9 is located on the back of the lock pin 3 when the door 8 is closed by moving the pin 3 against the pin spring 5 in the retracted direction, and the lock pin 3 is released by the pin spring 5. When the door 8 is opened, the plurality of push button switches 13 on the front surface of the door 8 can be maintained when the door 8 is opened. By turning on and off, the open signal is output by the combination of the on and off, the electromagnet is activated by the open signal to put the lock pin 3 in the retracted state, and the door spring 6 can automatically open the door 8. The opening / closing operation of the door 8 can be made extremely simple. Moreover, since there is no handle and no key is needed, there is no risk of forgetting or losing a conventional key.

[Brief description of drawings]

FIG. 1 is a cutaway plan view of an embodiment of the present invention.

FIG. 2 is a cutaway plan view of another state of FIG.

FIG. 3 is a front view of the door of FIG.

[Explanation of symbols]

 1 Frame 3 Lock Pin 4 Slope 5 Pin Spring 6 Door Spring 8 Door 9 Lock Metal Fitting 13 Push Button Switch

Claims (1)

[Scope of utility model registration request] 1. A lock pin which is provided in a frame body of a closed switchboard so as to be retractable and has an inclined surface formed at a front end thereof, a pin spring which biases the lock pin in an outgoing direction, and the lock pin which is opened by an open signal. An electromagnet to be set in a retracted state, a lock fitting provided on the door that abuts the inclined surface of the lock pin to move the lock pin in the retracted direction and locks the back of the inclined surface, and a door opening direction. A door opening / closing device for a closed switchboard, which includes a door spring biased to the door and a plurality of push button switches provided on the front surface of the door to output the open signal by a combination of ON and OFF.