JPH0643402Y2 - Locking device for pressure actuated doors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a lock device for locking a door in a closed position with respect to a fixed frame body such as an electrical equipment storage box.

[Prior Art] A locking device for locking a closed door to a fixed frame is
Although various structures have already been proposed and put into practical use, simplification of the mechanism and reduction of the number of parts are always required in order to reduce the manufacturing cost.

[Problems to be Solved by the Invention] Therefore, an object of the present invention is to have a simplified structure with a relatively small number of parts, so that the manufacturing cost can be reduced and the pressing operation for easy unlocking operation can be performed. An object is to provide a lock device for an actuating door.

[Means for Solving the Problem] Hereinafter, a description will be given using the reference numerals in the accompanying drawings. The lock device for a pressure actuating door of the present invention is a door 1 or a fixed frame body 2.
A lock plate 3 having a through hole 4 fixed thereto, a rod-shaped main body 5 fixed to the fixed frame body 2 or the door 1 and fitted into the through hole 4, and fitted into the rod-shaped main body 5 by a spring 6. The operating cylinder 7 slidably biased toward the lock plate 3 side and the lock cam 10 that is rotatably fitted into the longitudinal groove 8 of the rod-shaped body 5 and pivotally attached to the rod-shaped body 5 by the pivot 9. Constitute.

A first projection 11 and a second projection 12 are provided in parallel at one end of the lock cam 10, and a third projection 13 is provided at the other end of the lock cam 10 in symmetry with the first projection 11 with respect to the pivot 9, while With respect to 9, the fourth protrusion 14 is provided symmetrically with the second protrusion 12.

The distal end portion of the operating cylinder 7 relatively moves in the split groove 8 and comes into contact with the first protrusion 11 or the third protrusion 13 of the lock cam 3,
A claw portion 15 for turning the lock cam 10 to project the third protrusion 13 or the first protrusion 11 from the split groove 8 is provided, and a flange portion 16 with which the lock plate 3 abuts is provided at the base end portion of the operation cylinder 7.

While engaging the first protrusion 11 or the third protrusion 13 of the lock cam 10 with the hole edge portion of the through hole 4 on the rear surface 3a side of the lock plate 3,
The second protrusion 12 or the fourth protrusion 14 is formed on the inner surface of the collar portion 16 of the operating cylinder 7.
16a is engaged.

[Operation] When the door 1 is unlocked as shown in FIG. 10, the collar portion 16 of the operating cylinder 7 is fitted in the middle portion of the rod-shaped main body 5, and the lock cam 10 is held in the rod-shaped main body 5. The first projection 11, the second projection 12, the third projection 13 and the fourth projection 14 are all inserted in the split groove 8 while lying down parallel to the axis line of. Inner surface 16a of the collar 16
The first projection 11 abuts on the third projection 13 and the third projection 13 is located at a position that is closer to the root side than the movement locus of the tip end surface of the claw portion 15.

When the door 1 is pushed toward the fixed frame body 2 from the state shown in FIG. 10, the rod-shaped main body 5 is fitted into the through hole 4 of the lock plate 3, and apparently the lock plate 3 is the collar portion 16 of the operation tube 7. Move towards. By this relative movement of the lock plate 3, the lock plate 3 resists the urging force of the spring 6 and the collar portion 16 is pressed.
In order to push, the operating cylinder 7 slides toward the base end side of the rod-shaped main body 5.

In the sliding process of the operation tube 7, the claw portion 15 becomes the lock cam.
Since it abuts against the third projection 13 of 10, the operating cylinder 7 is further slid to rotate the lock cam 10 in the counterclockwise direction in FIG. 10 about the pivot 9.

As shown in FIG. 11, rotation of the lock cam 10 causes the fourth protrusion 14 to rotate.
Is stopped by contacting the tip end surface of the claw portion 15, and the lock cam 10 is held in a state in which the first protrusion 11 projects from the split groove 8. Here, when the pushing operation of the door 1 is stopped and the hand is released from the door 1, the door 1 slightly moves toward the front of the fixed frame body 2 due to the elastic action of the spring 6. Since the rod-shaped main body 5 is fixed to the door 1 and the lock cam 10 is pivotally attached to the rod-shaped main body 5,
The rod-shaped main body 5 and the lock cam 10 move forward like the door 1.

In the process of this movement, the first projecting from the outer surface of the rod-shaped body 5
The protrusion 11 abuts on the hole edge portion of the through hole 4 on the rear surface 3a side of the lock plate 3. When the rod-shaped main body 5 moves further forward, the lock plate 10 rotates counterclockwise around the pivot 9, and this rotation is stopped by the second projection 12 coming into contact with the inner surface 16a of the flange 16.

As shown in FIG. 12, when the first protrusion 11 abuts the hole edge portion of the through hole 4 and at the same time the second protrusion 12 abuts the inner surface 16a of the collar portion 16, the lock cam 10 causes the rod-shaped main body 5 to move. Since the forward movement of the door 1 is blocked, the door 1 is locked with respect to the fixed main body 2, and the door 1 is held in a predetermined closed position.

In the locked state of FIG. 12, the third protrusion of the lock cam 10
The 13 and the fourth protrusion 14 enter the root side of the movement locus of the tip surface of the claw portion 15. Here, when the door 1 is pressed toward the fixed frame body 2, the second protrusion 12 of the lock cam 10 causes the inner surface of the collar portion 16 to be
At the stage of separating from 16a and passing through the through hole 4 of the lock plate 3, the fourth projection 14 is pushed by the claw portion 15, so that the lock cam 10 rotates counterclockwise, and as shown in FIG. The second protrusion 12 partially projects from the split groove 8.

When the pressing of the door 1 is stopped at this stage, the door 1 moves toward the front of the fixed frame body 2 by the action of the spring 6, and in the process of this movement, the hole edge portion of the through hole 4 on the lock plate rear surface 3a side. Pushes the second protrusion 12, the lock cam 10 rotates counterclockwise around the pivot 9, and passes through the through hole 4 of the lock plate 3 in the opposite direction.

This unlocks the door 1 from the fixed frame body 2, and in this unlocked state, the lock cam 10 has rotated 180 degrees from the position in the previous unlocked state, and as shown in FIG. The three protrusions 13 contact the inner surface 16a of the collar portion 16. Thereafter, the lock cam 10 is 180
Turn around each time.

[Embodiment] In the illustrated embodiment, a rod-shaped rod-shaped main body 5 having a rounded tip portion 5a is provided with a split groove 8 over the entire length thereof, and a lock cam 10 penetrates the split groove 8 at a central portion in a diametrical direction. It is fitted in the portion 8a. The operating cylinder 7 has a rod-shaped connecting portion between the claw portion 15 and the collar portion 16, and the connecting portion is recessed in the split groove 8. The proximal half of the rod-shaped body 5 is formed in an oval shape in cross section, and the inner peripheral cross section of the collar 16 is also formed in the same shape. The stepped shoulder surface 5b between the proximal half and the distal half of the rod-shaped body 5 is
It is a sliding stopper surface of the operating cylinder 7.

The mounting board 17 for mounting the rod-shaped body 5 on the back surface of the door 1 is fixed to the base end surface of the rod-shaped body 5 with a screw 20 screwed into the screw hole 19 from the through hole 18. The lock plate 3 is fixed to the opening edge plate portion 2a of the fixed frame body 2, and the opening edge plate portion 2a has the first protrusion 11, the second protrusion 12, and the third protrusion 12 of the lock cam 10.
A notch 2b for escape of the protrusion 13 and the fourth protrusion 14 is provided. An elastic gasket 21 is attached to the opening edge plate portion 2a.

[Advantage of the Invention] As described above, the locking device of the present invention is composed of the rod-shaped main body 5, the spring 6, the operation tube 7, the pivot 9, and the lock cam 10, which are the minimum parts, and the structure is simplified.
It is possible to reduce the production cost.

Further, the claw portion 15 and the collar portion of the operation tube 7 fitted to the rod-shaped body 5
16 and the first protrusion 11, the second protrusion 12, the third protrusion 13 and the fourth protrusion 11 at both ends of the lock cam 10 that rotates in the split groove 8 of the rod-shaped body 5.
By the cooperation of the projection 14 and the spring 6 that biases the operating cylinder 7 toward the lock plate 3, the lock plate 3 and the lock cam 10 are automatically disengaged by an extremely simple operation such as pressing the door 1. Therefore, it is also easy to operate.

[Brief description of drawings]

1 is a front view of a lock device for a pressure actuating door according to an embodiment of the present invention, and FIG.
The drawing is a rear view of the locking device, FIG. 3 is a plan view of the locking device, FIG. 4 is a bottom view of the locking device, and FIG. 5 is a left side view of the locking device. , FIG. 6 is a left side view of the locking device. 7 is a sectional view taken along the line AA of FIG. 3, FIG. 8 is a sectional view taken along the line BB of FIG. 1, and FIG. 9 is a sectional view taken along the line CC of FIG. 10 is a vertical sectional view showing the unlocked state of the lock device, FIG. 11 is a vertical sectional view when the door is pressed for the locking operation, and FIG. 12 shows the locked state of the lock device. FIG. 13 is a vertical cross-sectional view showing a state in which the door is pressed for unlocking operation, and FIG. 14 is a vertical cross-sectional view showing another unlocked state in which the lock cam is turned 180 degrees. . 1 ... Door, 2 ... Fixed frame, 2a ... Opening edge plate, 2b ...
Notch, 3 ... Lock plate, 3a ... Rear surface, 4 ... Through hole, 5 ... Rod main body, 5a ... Tip part, 5b ... Step shoulder surface,
6 ... biasing spring, 7 ... operating tube, 8 ... split groove, 8a ...
Penetration part, 9 ... Axis, 10 ... Lock cam, 11 ... First
Protrusion, 12 ... Second protrusion, 13 ... Third protrusion, 14 ... Fourth protrusion, 15 ... Claw part, 16 ... Brim part, 16a ... Inner surface, 17 ... Mounting board, 18 ... Penetration Hole, 19 ... Screw hole, 20 ... Fixing screw, 21 ... Gasket

Claims (1)

[Scope of utility model registration request] 1. A lock plate 3 fixed to a door 1 or a fixed frame 2 and provided with a through hole 4, and a rod-shaped main body 5 fixed to the fixed frame 2 or the door 1 and fitted into the through hole 4. , Rod-shaped body 5
And the operation tube 7 which is fitted to the lock plate 3 by the spring 6 and is urged to slide toward the lock plate 3 and the split groove 8 in the longitudinal direction of the rod-shaped body 5.
And a lock cam 10 pivotally attached to the rod-shaped main body 5 by a pivot 9 and provided with a first protrusion 11 and a second protrusion 12 in parallel at one end of the lock cam 10. At the other end, a third protrusion 13 is provided symmetrically to the first protrusion 11 with respect to the pivot 9, while a fourth protrusion 14 is provided symmetrically to the second protrusion 12 with respect to the pivot 9, so that the inside of the split groove 8 is relatively The lock cam 10 is moved to come into contact with the first protrusion 11 or the third protrusion 13 of the lock cam 3, and the lock cam 10 is turned to rotate the third protrusion 13 or the first protrusion 13.
A claw portion 15 for projecting 11 from the split groove 8 is provided at the distal end portion of the operating cylinder 7, and a flange portion 16 with which the lock plate 3 abuts is provided at the proximal end portion of the operating cylinder 7, and the first protrusion 11 of the lock cam 10 or 3 protrusions
A pressing operation in which 13 is engaged with the hole edge portion on the rear surface 3a side of the lock plate 3 of the through hole 4, while the second protrusion 12 or the fourth protrusion 14 is engaged with the inner surface 16a of the flange portion 16 of the operation tube 7. Lock device for mold door.