JP2689103B2 - Lock device for shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device used for a shutter of a container of a cargo truck.

[0002]

2. Description of the Related Art A shutter unit at a doorway of a cargo truck container is equipped with a lock unit to prevent an outsider from approaching or stealing luggage. The lock unit may be operated from the side and the shutter may be locked to the fixed frame of the container.

The trapped person must loudly seek outside help, but when the locker leaves the front of the shutter and closes, no voice can be heard, so that the next work of the cargo truck is started. Will be left in the container until.

Further, in the conventional shutter lock device, the claw portion of the lock plate of the receiving rod projects below the case, which is dangerous during work and damages the lower gasket.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a shutter lock device that can be unlocked and released immediately from the inside even when the lock unit is fully locked from the front side of the shutter. Is.

A further object of the present invention is that the lever handle and the escape lever handle have good operability and can be unlocked with a light force, the unlocking and releasing work is easy, and the safety during the work is ensured. It is an object of the present invention to provide a locking device for a shutter that does not damage the gasket of the.

[0007]

Means for Solving the Problems Hereinafter, referring to the attached drawings, the shutter locking device of the present invention penetrates in the front-rear direction at the center of the lower end of the case 1 fixed to the shutter 38. The receiving groove 2 is opened downward, and the lock plate 3 is provided on the right side of the receiving groove 2 with the horizontal pivot 4
A lock groove 7 which is pivotally attached to the case 1 by a passive protrusion 5 and a stop protrusion 6 and intersects the receiving groove 2 is provided at the tip of the lock plate 3, and the lock plate 3 is rotated counterclockwise by a spring 8. A block plate 9 that is urged to rotate in the direction and closes the locking groove 7 that engages with and disengages from the receiving rod 40 on the fixed frame 39 side is pivotally attached to the case 1 by the horizontal pivot 10 on the left side of the receiving groove 2. 9 is urged to rotate clockwise by a spring 11, a keeper lever 12 is pivotally attached to the case 1 by a horizontal pivot 13 above the lock plate 3, and the keeper lever 12 is urged to rotate clockwise by a spring 8. .

A locking claw portion 15 that engages with a notch 14 on the upper surface of the base end portion of the lock plate 3 is provided on the lower surface of the base end portion of the keeper lever 12, and the operating lever 1 is located above the keeper lever 12.
6 is pivotally attached to the case 1 by a horizontal pivot 17,
The front side plate 18 has a horizontal pivot shaft 17 protruding from the shaft hole 19 and a V-shaped lever handle 20 that is bent at the center and has a push upper surface 50 at the front end positioned horizontally. The release lever 21 is pivotally attached to the case 1 by the horizontal pivot 22, and the escape lever handle 25 having a long handle is fixed to the horizontal pivot 22 projecting from the axial hole 24 on the rear plate 23 side of the case 1. Is urged to rotate counterclockwise by a spring 26.

A drive projection 29 for engaging and disengaging the passive pawl portion 28 on the top surface of the tip of the keeper lever 12 is provided at the tip of the diagonally downward release arm portion 27 of the release lever 21 so that the release lever 21 moves in the counterclockwise direction. Stop pin 30 that regulates rotation
Is provided in the case 1, and the operation protrusion 32 that abuts the diagonally downwardly directed passive arm portion 31 of the release lever 21 is provided with the operation lever 16.
It is provided on the rear surface of the tip of the operation arm portion 33 that is directed diagonally downward,
A positioning protrusion 34 that abuts against the stop pin 30 is provided at the base end portion of the operation lever 16, and a tip end portion of a stopper plate 37 fixed to a rotor 36 of a lock unit 35 fixed to the case 1 is attached to an operation arm portion of the operation lever 16. The lower end portion of the case 1 is formed to be long by abutting on the side surface of the distal end portion of 33, and the lock plate 3 and the block plate 9 are housed inside the case 1, and the gasket 51 at the lower end portion of the case 1 is formed. The contact surface 52 with is formed into a curved surface.

[0010]

[Operation] The shutter 38 is the fixed frame body 39 of the container.
Receiving rod 4 on the side of fixed frame 39 when locked against
0 enters the receiving groove 2 of the case 1, and the receiving rod 40 is engaged with the locking groove 7 of the lock plate 3. The opening of the locking groove 7 is closed by a block plate 9. At this time, since the release arm portion 27 is in contact with the stop pin 30, the release lever 21 is held in the rotation stopped state in spite of the biasing of the rotation of the spring 26. In addition, the release arm portion 27
Since the drive protrusion 29 of the above is engaged with the passive pawl portion 28, the keeper lever 12 is
The rotation is stopped. Then, since the hooking portion 15 of the keeper lever 12 is engaged with the notch 14,
The lock plate 3 is restrained and held in a rotation stopped state despite the rotation bias of the spring 8. Receiving rod 40 from receiving groove 2
The drawer is blocked by a stop protrusion 6 of the lock plate 3.

To release the locked state, the shutter 38
The lever handle 20 is rotated clockwise from the front side of, and the passive arm 31 of the release lever 21 is moved to the spring 2 by the operation protrusion 32 of the operation arm portion 33 of the operation lever 16.
Rotate clockwise against the bias of 6. By this rotation operation, the keeper lever 12 is rotated counterclockwise against the bias of the spring 8, so that the latching claw portion 15 of the keeper lever 12 is separated from the notch 14 of the lock plate 3. The lock plate 3 thus released from the restraint has the spring 8
The anti-clockwise rotation is caused by the urging force of, and the passive rod 5 causes the receiving rod 40 to escape from the receiving groove of the case 1 and the locking groove 7 of the lock plate 3. Following the rotation of the lock plate 3, the block plate 9 is also rotated clockwise by the urging force of the spring 11 to push down the receiving rod 40. By thus releasing the engagement between the lock plate 3 and the receiving rod 40, the shutter 38 is unlocked from the fixed frame body 39, and the shutter 38 is pulled up and opened.

When the shutter 38 is pulled down and closed after the work of unloading the container is completed, the passive rod 5 of the lock plate 3 waiting diagonally in the receiving groove 2 hits the receiving rod 40, so that the lock plate 3 Rotates in the clockwise direction against the bias of the spring 8, and in the middle of this rotation, the passive projection 5 pushes up the block plate 9 in the counterclockwise direction against the bias of the spring 11, and rotates. The original locking position of the locking groove 7 is restored. The rotation of the lock plate 3 is caused by the hook 15 of the keeper lever 12.
Is stopped by engaging the notch 14 of the lock plate 3, and the lock mechanism returns to the locked state.

Thus, the shutter 38 is fixed to the fixed frame body 39.
After locking to the lock unit 35, the predetermined key 41 is inserted into the lock unit 35, the rotor 36 is rotated to the locking position, and the tip of the stopper plate 37 is brought into contact with the side face of the tip of the operation arm portion 33 of the operation lever 16. Then, rotation of the operation lever 16 in the unlocking direction, that is, clockwise rotation is blocked, and the shutter 38 is locked by the lock unit 35 in earnest.

Full-scale locking by the lock unit 35
It should be done after confirming that there are no people inside the container, but if the person is locked in the container accidentally or intentionally or by mischief, but the person is locked in the container when it is locked. Is
The escape lever handle 25 attached to the inner surface of the shutter 38 is rotated counterclockwise. By this rotation operation, the keeper lever 12 rotates counterclockwise and the latch claw portion 15 separates from the notch 14 of the lock plate 3, so that the lock plate 3 rotates counterclockwise and the passive protrusion 5 moves. The receiving rod 40 is made to escape from the locking groove 7 of the lock plate 3. In this way, since the shutter 38 can be unlocked from the inside of the shutter 38 with respect to the fixed frame body 39, the trapped person can immediately escape.

[0015]

In the illustrated embodiment, the spring 8 is a torsion coil spring, one coil portion of which is fitted on the horizontal pivot 4 of the lock plate 3 and the other coil portion of the keeper lever 12. It is fitted on a horizontal pivot 13. One linear end of the spring is hooked on the spring mounting portion 42 at the base end of the lock plate 3, and the other linear end is hooked on the upper surface side of the hook 15 of the keeper lever 12.
The spring 11 is composed of a torsion coil spring, and the coil portion of the spring is fitted on the horizontal pivot 10 of the block plate 9. One linear end of the spring abuts the inner side surface of the case 1, and the other linear end of the spring 11 is It is hooked on the upper surface side of the block plate 9.
The spring 26 is composed of a tension coil spring, the upper end of which is connected to a spring mounting portion 43 protruding from the left end of the release lever 21, and the other end of which is fitted to the spacer pin 44 of the case 1.

The tip of the stopper plate 37 of the lock unit 35 is formed in a stepped shape so that the passive arm 31 of the release lever 21 does not hit. Back plate 2 of case 1
No. 3 oval receiving hole 45 has oval boss 4 of bearing disc 46.
A shaft hole 24 in which the horizontal pivot shaft 22 fixed to the release lever 21 is rotatably inserted is provided at the center of the bearing disk 46. Between the front plate 18 and the rear plate 23 of the case 1, four spacers 48 each having an elliptical mounting hole 49 are provided.

The lower end of the case 1 is formed to be long, and the lock plate 3 and the block plate 9 are housed inside the case 1 to prevent an injury caused by these protrusions. A contact surface 52 of the lower end portion of the case 1 with the gasket 51 is formed into a curved surface so as not to damage the gasket 52.

[0018]

As described above, in the shutter locking device of the present invention, the release lever 21 for releasing the restraint of the lock plate 3 by the keeper lever 12 is provided with the passive arm portion 31, and the operation arm portion 33 of the operation lever 16 is provided. The operation protrusion 32 that comes into contact with the passive arm 31 is provided on the back side of the case 1
Since a long escape lever handle 25 having a long handle is fixed to the horizontal pivot shaft 22 of the release lever 21 which is projected to the back side of the lock lever unit 35, the lock plate 37 of the lock unit 35 is brought into contact with the operation arm portion 33 in a fully locked state. Also, the lock plate 3 and the receiving rod 40 can be easily disengaged from the inside of the shutter 38, and the shutter 38 can be immediately pulled up and opened.

Further, since the lever handle 20 is bent at the central portion and the pushing surface 50 at the tip end is formed in a V-shape with the horizontal position, and the escape lever handle 25 is formed with a long handle, operability is improved. Can be unlocked easily and lightly. Since the lower end portion of the case 1 is formed to be long and the lock plate 3 and the block plate 9 are housed inside the case 1, the unlocking operation can be performed safely and the case 1 Since the contact surface 52 of the lower end portion with the gasket 51 is formed into a curved surface, the gasket 51 is not damaged.

[Brief description of the drawings]

FIG. 1 is a front view of a shutter lock device according to an embodiment of the present invention in a locked state.

FIG. 2 is a rear view of the lock device for the shutter in a locked state.

FIG. 3 is a right side sectional view of a shutter using the shutter lock device.

FIG. 4 is a vertical cross-sectional view of the lock device for the shutter in a locked state.

[Explanation of symbols]

 1 Case 2 Case receiving groove 3 Lock plate 4 Horizontal axis of lock plate 5 Passive protrusion of lock plate 6 Locking protrusion of lock plate 7 Locking groove of lock plate 8 Energizing spring of lock plate and keeper lever 9 Block Plate 10 Horizontal pivot of block plate 11 Spring for biasing block plate 12 Keeper lever 13 Horizontal pivot of keeper lever 14 Notch of lock plate 15 Locking protrusion of keeper lever 16 Operating lever 17 Horizontal pivot of operating lever 18 Case front plate 19 Front Plate Shaft 20 Lever Handle 21 Release Lever 22 Release Lever Pivot 23 Case Back Plate 24 Back Plate Side Shaft Hole 25 Escape Lever Handle 26 Release Lever Energizing Spring 27 Release Lever Release Arm 28 Passive claw of keeper lever 29 Drive protrusion of release lever 30 Stop pin of case 31 Release lever Passive arm 32 Operating protrusion of operating lever 33 Operating arm of operating lever 34 Positioning protrusion of operating lever 35 Locking unit 36 Rotor of locking unit 37 Lock plate of locking unit 38 Shutter 39 Fixing frame 40 Receiving rod 41 Key of locking unit 42 Spring mounting part of lock plate 43 Spring mounting part of release lever 44 Spacer pin of case 45 Receiving hole of case back plate 46 Bearing disk 47 Bearing boss of bearing disk 48 Case sparser 49 Mounting hole 50 Pushing surface 51 Gasket 52 Contact surface

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area E05C 3/24 E05C 3/24

Claims (1)

(57) [Claims] 1. A receiving groove 2 penetrating in the front-rear direction is provided at a central portion of a lower end of a case 1 fixed to a shutter 38 so as to open downward, and a lock plate 3 is provided on the right side of the receiving groove 2 by a horizontal pivot 4 for the case 1. Pivotally attached to the passive stud 5 and the stop stud 6
The lock groove 7 is formed at the tip of the lock plate 3 and intersects with the receiving groove 2. The lock plate 3 is urged to rotate counterclockwise by the spring 8 and is connected to the receiving bar 40 on the fixed frame 39 side. A block plate 9 that closes the locking groove 7 that engages and disengages is pivotally attached to the case 1 by a horizontal pivot 10 on the left side of the receiving groove 2, and the block plate 9 is rotationally biased in a clockwise direction by a spring 11.
Above the lock plate 3, the keeper lever 12 is pivotally attached to the case 1 by a horizontal pivot shaft 13,
Is urged to rotate in the clockwise direction by a spring 8, and a latching claw portion 15 that engages and disengages with the notch 14 on the upper surface of the base end portion of the lock plate 3 is provided on the lower surface of the base end portion of the keeper lever 12. In the above, the operation lever 16 is pivotally attached to the case 1 by the horizontal pivot shaft 17, and the shaft hole 1 of the front plate 18 of the case 1 is
A lever-shaped lever handle 20 which is bent at the central portion and has a push-up surface 50 at the tip thereof is located horizontally is fixed to a horizontal pivot shaft 17 which is protruded from 9, and a release lever 21 is horizontally pivoted on the rear side of the operation lever 16. An escape lever handle 25 having a long handle is pivotally attached to the case 1 by means of 22, and a horizontal handle shaft 22 projecting from an axial hole 24 on the side of the rear plate 23 of the case 1 is secured with an escape lever handle 25 having a long handle, and a release lever 21 is rotated counterclockwise by a spring 26. Is provided with a driving projection 29 for engaging and disengaging the passive pawl portion 28 on the upper surface of the tip portion of the keeper lever 12 at the tip portion of the release arm portion 27 of the release lever 21 which is obliquely downward. Stop pin 3 that regulates rotation in the rotating direction
0 is provided in the case 1, and the operation protrusion 32 that abuts the obliquely downward passive arm portion 31 of the release lever 21 is provided with the operation lever 1.
6 is provided on the rear surface of the distal end portion of the operation arm portion 33 that faces downward, and a positioning protrusion 34 that abuts the stop pin 30 is provided at the base end portion of the operation lever 16 and is fixed to the rotor 36 of the lock unit 35 fixed to the case 1. The front end of the stopper plate 37 is brought into contact with the side surface of the front end of the operation arm portion 33 of the operation lever 16, and the lower end of the case 1 is formed to have a long length.
The lock plate 3 and the block plate 9 are housed inside the case, and the case 1
A shutter lock device in which a contact surface 52 of the lower end portion of the shutter with the gasket 51 is formed into a curved surface.