JPH0640298Y2 - Restraint type door switch operation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a restraint type door switch operating device in which a push rod for a switch operation is held in a non-sliding manner until the door is closed for a certain amount or more. Is.

[Prior Art] In order to detect that the door is closed and operate the locking device and other devices, a switch is provided on the fixed frame side of the electric device storage box body, etc., and the operation member provided on the door side The switch is turned on when the door is closed.

[Problems to be solved by the invention] However, in the conventional device, since the push rod of the switch is exposed inside the fixed frame, the switch can be turned on even if the push rod is pushed with the fingertip in the door open state. As a result, there is a risk of giving an erroneous signal to the locking device and the management device.

Therefore, an object of the present invention is to provide a restraint type door switch operating device in which a push rod is held in an inoperable position when the door is open, so that an erroneous signal does not occur due to mischief or the like.

[Means for Solving the Problem] Hereinafter, the reference numeral in the accompanying drawings will be used to explain. The restraint type door switch operating device of the present invention includes a main body case 2 fixed to a fixed frame body 1; 2 axial cavities 3
A cylinder 4 slidably fitted to the cylinder;
A slide pin 6 slidably fitted in an axial cavity 5 of the main body case 2; a slide pin 6 fitted in a radial through hole 7 of the cylinder 4; Groove 9
A lock ball 10 that selectively engages with; a push rod 12 that protrudes from the tip of the cylinder 4 and that protrudes from the body case 2 to turn on the switch 11; and is housed in the cavity 3 of the body case 2, A spring 13 for biasing the cylinder 4 backward;
A spring 14 which is housed in the cavity 5 of the cylinder 4 and biases the slide pin 6 backward;
When the door 15 is closed, it enters the cavity 3 of the main body case 2 and comprises a base end surface 6a for the slide pin 6 and a key bolt 16 for pressing the base end surface 4a of the cylinder 4, and a lock ball is provided on the front side wall of the inner peripheral receiving groove 8. An inclined cam surface 17 for pushing 10 is provided.

[Operation] When the door 15 is opened, as shown in FIG.
Engages over both the inner peripheral receiving groove 8 of the main body case 2 and the through hole 7 of the cylinder 4, whereby the cylinder 4
Is locked so that it cannot slide on the body case 2.

No matter how much the base end surface 6a of the slide pin 6 is pressed with a fingertip or the like, the lock ball 10 is merely pressed against the outer peripheral surface 6b of the slide pin 6 by the inclined cam surface 17 of the inner peripheral receiving groove 8, so that the cylinder 4 is locked. State is retained, cylinder 4
The push rod 12 projecting from is fixed to a position where the switch 11 cannot be operated.

When the door 15 is closed, the key bolts 16 are attached to the body case 2.
In order to push the base end surface 6a of the slide pin 6 into the cavity 3, the slide pin 6 slides forward in the cavity 5 of the cylinder 4 against the bias of the spring 14. When the slide pin 6 slides to a position where the outer peripheral receiving groove 8 of the slide pin 6 is aligned with the inner peripheral receiving groove 8 of the cylinder 4, as shown in FIG. It contacts the end surface 4a.

When the closing of the door 15 is further continued and the cylinder 4 is pushed forward by the key bolt 16, the inclined cam surface 17 of the inner peripheral receiving groove 8 pushes the lock ball 10 by this reaction, so that the lock ball 10 moves to the cylinder 4 It moves in the through hole 7 and partly engages with the outer peripheral receiving groove 9 of the slide pin 6. As a result, the lock of the cylinder 4 with respect to the main body case 2 is released, and the cylinder 4 moves forward in the axial direction of the main body case 2 against the bias of the spring 13 in response to the closing operation of the door 15.

As shown in FIG. 3, when the door 15 is completely closed, the push rod moves forward together with the cylinder 4.
The reference numeral 12 projects from the main body case 2 by a necessary and sufficient stroke, and the switch 11 is turned on.

Next, when the door 15 is opened, the cylinder 4 moves backward by the bias of the spring 13, and the slide pin 6 moves backward by the bias of the spring 14 to return to the positions shown in FIG. .

[Embodiment] In the illustrated embodiment, the fixed frame body 1 is a box body for storing electrical equipment, a side wall plate 18 is welded with a mounting block 19, and a screw hole 20 of the block 19 has a cylindrical shape. Body case 2
The male screw portion 21 is screwed. Cavity 3 of body case 2
A tapered surface 3a is formed in the base end opening of the. The inner peripheral receiving groove 8 is formed in an annular shape on the inner peripheral surface of the cavity 3.

A disk-shaped lid plate 22 is fitted into the tip end opening of the cavity 3, and the lid plate 22 is fixed to the cylinder 4 by a lock pin 23. The push rod 12 is slidably fitted in the central hole 24 of the cover plate 22. As shown in FIG. 3, the front end surface 4b of the cylinder 4 comes into contact with the cover plate 22, whereby the cylinder 4 stops forward sliding. Also, the cylinder 4
The backward sliding that abuts on the step portion 40 on the inner peripheral surface of the cavity 3 is stopped.

The cylinder 4 having a circular cross section has two through holes 7 formed on its diameter. A small hole 26 is formed in the central portion of the base end wall portion 25 of the cavity 5 of the cylinder 4, and the base end small diameter shaft portion 6c of the slide pin 6 is slidably fitted in the small hole 26. When the large-diameter shaft portion 6d of the slide pin 6 comes into contact with the base end wall portion 25, the backward sliding of the slide pin 6 is stopped. The outer peripheral receiving groove 9 is formed in an annular shape on the outer peripheral surface of the large-diameter shaft portion 6d of the slide pin 6.

The proximal large-diameter portion 12a of the push rod 12 is fitted in the distal end of the cavity 5, and the push rod 12 is fixed to the cylinder 4 by a lock pin 27. The return spring 13 of the push rod 12 is composed of a compression coil spring, one end of the spring 13 abuts the bottom surface of the recess 28 of the cover plate 22, and the other end of the spring 13 abuts the large-diameter base portion 12a. Touching. The spring 14 for returning the slide pin 6 is also composed of a compression coil spring.
One end of 14 is the recess 2 of the large-diameter portion 12a of the base end of the push rod 12.
9 is in contact with the bottom surface, and the other end of the spring 14 is the piston rod 6
Is in contact with the bottom surface of the concave portion 30 of the large diameter shaft portion 6d. The elastic force of the spring 13 is set to be larger than the elastic force of the spring 14.

The key bolt 16 is caulked and fixed to the central receiving hole 32 of the substrate 31,
The board 31 is a door with a fastener 35 passing through the mounting hole 33 and the through hole 34.
The key bolt 16 is fixed to the door 15 and protrudes at a right angle from the back surface of the door 15. A recess 36 into which the base end of the slide pin 6 is inserted is provided at the tip of the key bolt 16,
The base end surface 6a of is pressed by the bottom surface of the recess 36.

The micro switch type switch 11 is a side wall plate of the fixed frame body 1.
The guard plate 37 fixed to 18 is fixed by screws 38, and the actuator lever 39 is pushed by the tip surface 12b of the push rod 12. The guard plate 37 may be a device case. The switch 11 can be installed in an exposed state, but it is desirable to install it immediately after the main body case 2 so that it cannot be easily approached from the front opening of the fixed frame 1.

Incidentally, the cylinder 4 and the push rod 12 may be integrally formed.

[Effects of the Invention] As described above, in the restraint type door switch operating device of the present invention, when the door 15 is open, the lock ball 10 has both the inner peripheral receiving groove 8 of the main body case 2 and the through hole 7 of the cylinder 4. Since the inner spherical surface of the lock ball 10 is in contact with the outer peripheral surface of the slide pin 6, the cylinder 4 and the push rod 12 projecting from the tip of the cylinder slide with respect to the main body case 2. The cylinder 4 cannot be unlocked no matter how much the base end surface 6a of the slide pin 6 exposed at the front opening of the fixed frame 1 is pushed with a fingertip or the like.

In this way, the push rod that is the operation means of the switch 11
Switch 11 because 12 is properly restrained to be immovable
Cannot be turned on while the door is open, and an erroneous signal indicating that the door is closed does not appear even though the door is in the open state as in the conventional device.

[Brief description of drawings]

FIG. 1 is a horizontal cross-sectional view of a switch operating device for a constrained door according to an embodiment of the present invention in a door open state, and FIG. 2 is a horizontal cross-sectional view of the switch operating device at the initial stage of opening the door. FIG. 3 is a horizontal sectional view when the door is completely closed, and FIG. 4 is a sectional view taken along the line AA of FIG. 1 ... Fixed frame, 2 ... Main body case, 3 ... Cavity, 3a ...
… Tapered surface, 4 …… Cylinder, 4a …… Base end surface, 4b…
... Tip surface, 5 ... Cavity, 6 ... Slide pin, 6a ... Base end surface, 6b ... Outer peripheral surface, 6c ... Base end small diameter shaft portion, 6d ... Large diameter shaft portion, 7 ... Through hole, 8: inner peripheral receiving groove, 9: outer peripheral receiving groove,
10 …… Lock ball, 11 …… Switch, 12 …… Push rod, 12a …… Base end large diameter part, 12b …… Tip part, 13 …… Cylinder biasing spring, 14 …… Slide pin biasing spring , 15 ...
… Door, 16… Key bolt, 17… Inclined cam surface, 18… Side wall plate, 19… Mounting block, 20… Screw hole, 21… Male screw part, 22… Lid plate, 23… Lock pin. 24 ...... Central hole, 25 ...... Base wall, 26 ...... Guide small hole, 27 ...... Lock pin, 28 ...... Spring receiving recess, 29 ...... Spring receiving recess, 30 ...
… Spring receiving recess, 31 …… Base plate, 32 …… Central receiving hole, 32 ……
Mounting hole, 34 ... Through hole, 35 ... Fastener, 36 ... Recess, 37
...... Guard plate, 38 ...... screw, 39 …… Actuator lever, 40 …… Stop step

Claims (1)

[Scope of utility model registration request] 1. A main body case 2 fixed to a fixed frame body 1.
A cylinder 4 slidably fitted in the axial cavity 3 of the body case 2; a slide pin 6 slidably fitted in the axial cavity 5 of the cylinder 4; The inner peripheral receiving groove 8 of the body case 2 is fitted into the through hole 7.
And a lock ball 10 that selectively engages with the outer peripheral receiving groove 9 of the slide pin 6; a push rod 12 that projects from the tip of the cylinder 4 and projects from the body case 2 to turn on the switch 11; A spring 13 housed in the cavity 3 of the case 2 for biasing the cylinder 4 backward; a spring 14 housed in the cavity 5 of the cylinder 4 for biasing the slide pin 6 backward;
The key bolt 16 is projected and fixed to the back surface of 15 and enters the cavity 3 of the main body case 2 when the door 15 is closed, and the key bolt 16 presses the base end surface 6a of the slide pin 6 and the base end surface 4a of the cylinder 4.
A restraint type door switch operating device having an inclined cam surface 17 for pushing the lock ball 10 on the front side wall portion of the inner peripheral receiving groove 8.