JPH0743396Y2 - Push-type locking device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push type lock device for pushing a lock shaft to lock a wing body such as a door of a switchboard storage box to a fixed frame body such as a box body.

[0002]

2. Description of the Related Art In a conventional push-type locking device disclosed in Japanese Utility Model Publication No. 58-28121, a shaft hole into which a tip shaft portion of a lock shaft is fitted is formed in a left side plate portion of a fixed case, and a fixed case of the fixed case is provided. The right side plate is provided with a shaft hole into which the base shaft of the lock shaft is inserted, and the front plate of the fixed case is provided with a receiving hole into which the operation protrusion of the front plate of the lock plate is inserted. The left leg plate is provided with a through hole into which the tip shaft of the lock shaft is inserted, the right leg of the lock plate is provided with a through hole into which the intermediate shaft of the lock shaft is inserted, and the intermediate shaft of the lock shaft is stopped. A protrusion and a lock receiving groove are provided, and the left end of the compression coil spring fitted to the tip shaft of the lock shaft is pressed against the left leg plate of the lock plate, while the right end of the compression coil spring is pressed against the stop protrusion. .

In this push-type locking device, the lock rod pushed to a position where it engages with the receiving member on the fixed frame side is inserted into the lock receiving groove of the lock shaft through the through hole of the right leg plate portion of the lock plate. It is held in the locked position by engaging the hole edge surface,
In order to hold the engagement state between the lock receiving groove and the hole edge surface, the front plate part of the lock plate is pressed against the front plate part of the fixed case, and the left side plate part of the lock plate is attached to the left side plate part of the fixed case. While the pressure plate is pressed, the compression coil spring maintains the position of the lock plate so that the hole wall surface of the through hole of the right leg plate portion of the lock plate presses the inner bottom surface of the lock receiving groove. Therefore, when a large vibration shock is received, the locking plate shifts from the locking position and the engagement between the locking receiving groove and the locking plate is accidentally released, and the lock bar is unlocked by the action of the compression coil spring. There is a risk of being pushed back to.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to prevent a lock plate and a lock bar from being accidentally released from engagement by a vibration shock, and to reliably obtain a stable and solid locked state. It is an object of the present invention to provide a push-type locking device that is used.

[0005]

The push-type locking device of the present invention will be described below with reference to the accompanying drawings. In the push-type locking device of the present invention, the left side plate portion 2 of the fixed case 1 is provided with the tip shaft portion 4 of the lock shaft 3. A shaft hole 5 into which the base end shaft portion 7 of the lock shaft 3 is inserted is provided in the right side plate portion 6 of the fixed case 1, and a front plate portion 9 of the fixed case 1 is formed from a spring plate. The lock plate 3 has a receiving hole 13 into which the operation projection 12 of the front plate 11 is inserted, and the left leg plate 14 of the lock plate 10 has a lock shaft 3
The through hole 15 into which the distal end shaft portion 4 of the
The right leg plate portion 16 is provided with a through hole 18 through which the intermediate shaft portion 17 of the lock shaft 3 can pass, and the intermediate shaft portion 17 of the lock shaft 3 comes into contact with the inner surface 6a of the right side surface plate portion 6 of the fixed case 1 by a stop projection 19 Is fixed, a small-diameter shaft portion 20 is provided on the intermediate shaft portion 16 on the left side of the stop protrusion 19, and a locking plate 21 made of a spring plate is provided in the through hole 23 of the base end plate portion 22 at the distal end shaft portion of the lock shaft 3. 4 and the pressing plate portion 25 is bent and formed on the lower portion of the locking plate 21 to the right.

The left end portion of the compression coil spring 24 fitted to the tip end shaft portion 4 of the lock shaft 3 is attached to the left leg plate portion 1 of the locking plate 10.
4 is pressed against the right side surface 14a of the compression coil spring 2
4 to the left side surface 22a of the base plate 22 of the locking plate 21
The front plate portion 9 of the fixed case 1 by pressing it against
The front plate portion 11 of the lock plate 10 is pressed against the inner surface 9a of the lock plate 10, the left leg plate portion 14 of the lock plate 10 is pressed against the inner surface 2a of the left side plate part 2 of the fixed case 1, and the small-diameter shaft portion 20 of the lock shaft 3 is pressed.
The hole wall surface 18a of the through hole 18 of the lock plate 10 is pressed against the lower peripheral surface of the lock plate 10, and the tip portion 2 of the pressing plate portion 25 of the locking plate 21 is pressed.
6 is pressed against the lower end of the right leg plate portion 16 of the lock plate 10,
The hole edge surface 18b of the through hole 18 is engaged with the enlarged diameter shoulder surface 27 on the left side of the small diameter shaft portion 20.

[0007]

In one example of use shown in the figure, the fixed case 1 is fixed to a wing body 30 such as a door of a distribution board storage box, and the receiving member 29 for engaging and disengaging the tip end shaft portion 4 of the lock rod 3 is a box body or the like. It is fixed to the fixed frame body 28. In the locked state shown in FIG. 2, the operation protrusion 12 of the lock plate 10 is fixed to the fixed case 1.
The front end portion of the locking plate 10 projects from the receiving hole 13 of the front plate portion 9 of the locking plate 10 by its elastic force and the elastic force of the compression coil spring 24. The left leg plate portion 14 is fixed to the fixed case 1 by being pressed against the inner surface 9a.
Is pressed against the inner surface 2a of the left side plate 2, and the hole wall surface 18a of the through hole 18 is pressed against the lower peripheral surface of the small diameter shaft portion 20 of the lock shaft 3.

The hole wall surface 18a of the through hole 18 has a pressing plate portion 25.
By the elastic force of the locking plate 21 that pushes up the lower end of the right leg plate portion 16 with the tip portion 26 of the right leg plate portion 16, the small diameter shaft portion 20 is pressed more strongly. Since the posture of the lock plate 10 is firmly held in this way, the enlarged diameter shoulder surface 27 of the intermediate shaft portion 17 of the lock shaft 3 and the hole edge surface 18b of the through hole 18 of the lock plate 10 are engaged. Is firmly maintained, and the lock bar 3 is held in the locked position in which the lock bar 3 is engaged.

When unlocking, the operating projection 1 of the lock plate 10
2 is pushed into the receiving hole 13 of the fixed case 1. By this pushing operation, the inner surface 2a of the left side plate portion 2 of the fixed case 1 is
Centering on the lower end of the left leg plate 14 that is pressed against
In FIG. 2, since the lock plate 10 rotates slightly clockwise, the position of the through hole 18 of the right leg plate portion 16 is lowered. When the through hole 18 comes to a position matching the intermediate shaft portion 17 of the lock shaft 3, the engagement between the enlarged diameter shoulder surface 27 and the hole edge surface 18b of the through hole 18 is released, so that the lock shaft 3 Immediately slides to the right due to the bias of the compression coil spring 24,
As shown in FIG. 3, the tip end shaft portion 4 escapes from the money receiver 29.

In the process of sliding to the right, the hole wall surface 18a of the through hole 18 of the lock plate 10 is brought into sliding contact with the outer peripheral surface of the intermediate shaft portion 17 of the lock shaft 3. When the lock shaft 3 slides to the unlocked position, the stop projection 19 comes into contact with the inner surface 6a of the right side plate portion 6 of the fixed case 1, and further right side sliding is prevented. At this stage, the lower end portion of the right leg plate portion 16 of the locking plate 10 is in contact with the root portion of the pressing plate portion 25 of the locking plate 21.

From this unlocked state, the lock rod 3 is pushed to the left side, the tip end shaft portion 4 of the lock shaft 3 engages with the receiving member 29, and the right leg plate portion 16 of the lock plate 10 has a small diameter of the lock shaft 3. Shaft part 2
When it reaches the position 0, the locking plate 10 rotates counterclockwise in FIG. 3 around the lower end of the left leg plate portion 14, and the hole wall surface 18a of the through hole 18 makes the lower circumference of the small diameter shaft portion 20. Press against the surface. At the same time, the operation protrusion 1 of the lock plate 10
The front end portion of 2 projects from the receiving hole 13 of the front plate portion 9 of the fixed case 1. At this stage, the right leg plate portion 16 of the locking plate 10
The lower end portion of the above is pushed upward by the tip end portion 26 of the pressing plate portion 25 of the locking plate 21.

[0012]

In the illustrated embodiment, the tip shaft portion 4 of the lock shaft 3 is shown.
Is formed to have a smaller diameter than the intermediate shaft portion 17, and a step shoulder surface 32 between the tip shaft portion 4 and the intermediate shaft portion 17 is used as a support surface for the base end plate portion 21 of the locking plate 21. A knob 31 is fixed to the base end shaft portion 7 of the lock shaft 3. The stop projection 19 is composed of a C-shaped stop ring, and is provided with the annular receiving groove 3 of the intermediate shaft portion 17.
It is fitted in 3 and fixed. The right leg plate portion 16 of the locking plate 10 is bent substantially at a right angle to the front plate portion 11, and the left leg plate portion 14 is bent and formed so as to be inclined outwardly with respect to the right leg plate portion 16. The operation protrusion 12 is deviated to the right leg plate portion 16 side and cut and raised in the front plate portion 11.

The pressing plate portion 25 of the locking plate 21 is the base end plate portion 21.
The two upper and lower pressing plate portions 25, which are bent at right angles to the positioning shoulder portion 3 at the lower end portion of the right leg plate portion 16, are formed.
4, 34 are engaged. A tip end portion 26 of each pressing plate portion 25 is bent and formed in a stepwise shape in the direction of the lock rod 3.

[0014]

According to the push lock device, the fixed frame member 2
The lock rod 3 pushed to a position where it engages with the receiving member 29 on the 8 side has the enlarged diameter shoulder surface 27 between the intermediate shaft portion 17 and the small diameter shaft portion 20 of the lock shaft 3 on the right side of the locking plate 10. The hole edge surface 18b of the through hole 18 of the leg plate portion 16 is held in the locked position by engagement, and the engagement state between the enlarged diameter shoulder surface 27 and the hole edge surface 18b is maintained by the front plate of the fixed case 1. The front plate portion 11 of the locking plate 10 is pressed against the inner surface 9a of the portion 9, and the left leg plate portion 14 of the locking plate 10 is pressed against the inner surface 2a of the left side plate portion 2 of the fixed case 1, while the right side of the locking plate is pressed. This is done by holding the posture of the locking plate 10 with the compression coil spring 24 so that the hole wall surface 18a of the through hole 18 of the leg plate portion 16 is pressed against the lower peripheral surface of the small diameter shaft portion 20 of the lock shaft 3. , In this invention,
In addition to forming the locking plate 10 itself with a spring plate,
The locking plate 21 fitted to the distal end shaft portion 4 of the lock shaft 3 and maintained in the posture by the compression coil spring 24 is formed of a spring plate, and the distal end portion 26 of the pressing plate portion 25 of the locking plate 21 is connected to the locking plate 10. Since the hole wall surface 18a of the through hole 18 is pressed against the small-diameter shaft portion 20 by pushing up the lower end portion of the right leg plate portion 16, the engagement between the diameter-expanded shoulder surface 27 and the hole edge surface 18b due to vibration impact. The lock is not released accidentally, and a stable and solid locked state can be reliably obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a push lock device according to an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the lock device in a locked state.

FIG. 3 is a horizontal sectional view of the lock device in an unlocked state.

[Explanation of symbols]

 1 Fixed Case 2 Left Side Plate of Fixed Case 3 Lock Shaft 4 Tip Shaft of Lock Shaft 5 Shaft Hole of Fixed Case 6 Right Side Plate of Fixed Case 7 Base Shaft of Lock Shaft 8 Shaft Hole of Fixed Case 9 Fixed Case Front plate part of 10 lock plate 11 front plate part of lock plate 12 operation protrusion of lock plate 13 receiving hole of fixed case 14 left leg plate part of lock plate 15 through hole of lock plate 16 right side of lock plate Leg plate 17 Intermediate shaft of lock shaft 18 Through hole of lock plate 18a Through hole wall surface of through hole 18b Hole edge surface of through hole 19 Lock shaft stop projection 20 Lock shaft small-diameter shaft portion 21 Locking plate 22 Locking plate Base plate 23 of the through hole of the locking plate 24 compression coil spring 25 pressing plate part of the locking plate 27 tip end of the pressing plate 28 fixed frame body 29 receiving 30 wing body 31 picking the lock shaft 32 lock shaft Step shoulder surface 33 Lock shaft annular receiving groove 3 Positioning the shoulder portion of the right leg plate section

Claims (1)

[Scope of utility model registration request] 1. A shaft hole 5 into which a tip shaft portion 4 of a lock shaft 3 is inserted is provided in a left side plate portion 2 of a fixed case 1, and a base end shaft portion 7 of the lock shaft 3 is provided in a right side plate portion 6 of the fixed case 1. Is provided in the front plate portion 9 of the fixed case 1, and a receiving hole 13 is formed in the front plate portion 9 of the fixed case 1 into which the operation protrusion 12 of the front plate portion 11 of the lock plate 10 made of a spring plate is inserted. A through hole 15 into which the tip end shaft portion 4 of the lock shaft 3 is fitted is provided in the left leg plate portion 14 of
The right leg plate portion 16 of the lock plate 10 is provided with the intermediate shaft portion 1 of the lock shaft 3.
7 is provided with a through hole 18 through which a stop projection 19 that abuts the inner surface 6a of the right side plate portion 6 of the fixed case 1 is fixed to the intermediate shaft portion 17 of the lock shaft 3. A small-diameter shaft portion 20 is provided in the portion 16, a locking plate 21 made of a spring plate is fitted into the distal end shaft portion 4 of the lock shaft 3 through the through hole 23 of the base end plate portion 22, and pushed to the lower portion of the locking plate 21. Plate part 25
Is bent to the right, and the left end of the compression coil spring 24 fitted to the tip shaft portion 4 of the lock shaft 3 is pressed against the right side surface 14a of the left leg plate portion 14 of the lock plate 10, while the right end portion of the compression coil spring 24 is pressed. By pressing the left side surface 22a of the base end plate portion 22 of the locking plate 21 into contact with the fixed case 1
The front plate portion 11 of the lock plate 10 is pressed against the inner surface 9a of the front plate portion 9 of the lock plate 3, and the left leg plate portion 14 of the lock plate 10 is pressed against the inner surface 2a of the left side plate portion 2 of the fixed case 1. The hole wall surface 18a of the through hole 18 of the locking plate 10 is pressed against the lower peripheral surface of the small-diameter shaft portion 20 and the pressing plate portion 2 of the locking plate 21.
5 is pressed against the lower end of the right leg plate portion 16 of the lock plate 10, and the hole edge surface 18b of the through hole 18 is engaged with the left expanded diameter shoulder surface 27 of the small diameter shaft portion 20. Mold locking device.