JP3452898B2 - Locking device for doors of containers such as aircraft - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container door locking device used in aircrafts, lorries, ships and the like.

[0002]

2. Description of the Related Art In a conventional door lock device, a door is opened by pulling a handle to retract a lock bolt to an unlocked position and then pulling the handle toward you. When the hand is released from the handle, the lock handle immediately projects to the locked position due to the spring bias. When the door is closed with the tip of the lock bolt protruding to the locking position in advance, the tip of the lock bolt collides with the opening edge surface of the container and damages the opening edge surface and the lock bolt. There is a risk of

Further, since the handle that is erected and rotated to the passage space side when unlocking and opening the door is designed to be laid down manually, if the handle laying operation is neglected, the handle comes into contact with pedestrians and equipment. And dangerous. When many containers are placed in parallel, space is taken up by that much, and space efficiency becomes poor in an aircraft.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to automatically fall down when the hand is released from the handle, so that the handle does not obstruct passage and the lock bolt is retracted to the unlocked position when the door is open. It is an object of the present invention to provide a lock device for a door of a container of an aircraft or the like that can be accurately retained in a locked state.

[0005]

[Means for Solving the Problems] In the door lock device according to the invention of claim 1, a shallow recess 2 is formed in the case 1 from the front side to the back side, and the lock bolt 10 is provided in the recess 2 in the recess 2. Is provided so as to move forward and backward in the direction of the side wall 3, and the case 1 is provided with a bolt guide 5 into which the lock bolt 10 is inserted. The lock bolt 10 has a handle 13 fixed thereto. The guide 5 is rotatably provided around the guide hole 24 of the guide 5 between a position lying in the recess 2 and a position protruding from the recess 2. A case 1 is provided with a keeper 4 to be engaged.

A torsion coil spring 12 is fitted in the lock bolt 10, and the rear end portion 1 of the coil portion of the torsion coil spring 12 is fitted.
4 is in contact with the bolt guide 5, the linear portion 17 extending from the rear end 14 is in contact with the bolt guide 5 or the case 1, and the tip end portion 15 of the torsion coil spring 12 is the spring bearing of the lock bolt 10. the pin 16 abuts, the torsion coil spring 12 is compressed between the bolt guide 5 and the spring receiving pin 16, with the lock bolt 10 is slid biased in a protruding direction by a torsion coil spring 12, before
The handle 13 is rotationally biased in the fall direction by the torsion coil spring 12 .

In the door lock device of the second aspect of the present invention, in addition to the structure of the first aspect of the invention, an engaging pin 18 for engaging and disengaging the keeper 4 is provided at the tip of the handle 13.
An inclined cam surface 7 is formed on the front surface of the keeper 4 so as to be inclined downward toward the side wall 3 of the case 1. The side surface of the keeper 4 adjacent to the highest portion of the inclined cam surface 7 has an engaging pin 1
A hook portion 8 for engaging and disengaging 8 is formed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the illustrated embodiment, the depth of the recess 2 is formed to be 2 to 3 times the diameter of the lock bolt 10, and the lock bolt 10 is provided with a bottom wall of the recess 2. Two
6 is provided in parallel with this. Also handle 1
3 is an inverted L-shape when viewed from the front, and is welded to the side surface of the intermediate portion of the lock bolt 11 at the root portion 19 so as to project in the radial direction thereof. The handle 13 is wholly housed in the recess 2 in the lying state. The handle 13 is curved in an arc shape so as to be convex toward the front side in a side view so that the operator can easily hold the handle 13.
The intermediate portion of 3 is in a state of floating above the bottom wall 16 of the recess 2.

A pair of left and right bolt guides 5 and 6 bent in an L-shaped cross section are welded to a bottom wall 16 of the recess 2 of the case 1. The lock bolt 10 is inserted through a through hole 23 formed in the side wall of the case 1 and guide holes 24, 25 formed in the bolt guides 5, 6. The spring receiving pin 16 is radially driven and fixed to the side surface of the intermediate portion of the lock bolt 10, and faces the left side surface of the bolt guide 6 arranged on the right side. The tip portion 15 of the torsion coil spring 12 is curved in a hook shape, and is hooked on the spring receiving pin 16 at the curved portion. The straight portion 17 extending from the rear end portion 14 of the torsion coil spring 12 is in contact with the base portion of the bolt guide 5 arranged on the left side.

The right end of the root portion 19 of the handle 10 is brought into contact with the right side wall 3 of the case 1 to regulate the sliding stroke of the lock bolt 11 in the protruding direction.
This stroke restriction can also be performed by bringing the spring receiving pin 16 into contact with the left side surface of the right bolt guide 6. To control the sliding stroke of the lock bolt 11 in the backward direction, the handle 13 is provided on the right side surface of the right bolt guide 6.
This is done by abutting the left end of the root portion 19 of the.
When the engagement pin 18 gets over the inclined cam surface 7 of the keeper 4, the rotation angle of the handle 13 is small and about 3 to 15 degrees is sufficient.

[0011]

As shown in FIG. 2, when the door 22 is closed and locked, the tip portion 11 of the lock bolt 10 has the lock hole 21 at the edge surface of the opening of the container body 20.
Has been inserted into. To unlock and open the door 22, the lock bolt 10 is slid to the left in FIG. 1 while holding the handle 13 and pulling it toward you. Since the tip portion 11 of the lock bolt 10 is pulled out from the lock hole 21 by this sliding operation, the lock of the door 22 with respect to the container body 20 is released, and the door 22 is opened by further pulling the handle 13 toward you. .

After the door 22 is opened, when the handle 13 is pulled down to the left side, the handle 1 is laid down in the recess 2 of the case 1.
The tip portion of the handle 13 engages with the hook portion 8 of the keeper 4. As a result, the handle 13 is temporarily fixed at the fall position and the lock bolt 10 is temporarily fixed at the retracted position. After closing the door 22, the handle 13 is slightly held and rotated to disengage the engagement pin 18 from the hook portion 8 of the keeper 4. Then, when the hand is released from the handle 13, the biasing force of the torsion coil spring 12 causes the engagement pin 18 to move to the keeper 4.
While descending while slidingly contacting the inclined cam surface 7, the position reaches the position closest to the bottom wall 26 of the recess 2. In this process, the lock bolt 1 is advanced to the right by the bias of the torsion coil spring 12, and the tip portion 11 of the lock bolt 10 is reinserted into the lock hole 21 on the edge surface of the opening of the container body 20.

[0013]

According to the invention of claim 1, the shallow recess 2 is formed in the case 1 from the front side to the back side, and the lock bolt 10 moves forward and backward in the recess 2 in the direction of the side wall 3 of the recess 2. Since the case 1 is provided with the bolt guide 5 into which the lock bolt 10 is inserted, the space occupied by the device as a whole is reduced, and the inner volume of the container is maximized for accommodating luggage in a narrow space such as an aircraft. Can be used effectively. In the locked state, the handle 13 fixed to the lock bolt 10 is accurately held in the depressed position 2 of the case 1 by the biasing force of the torsion coil spring 12 fitted in the lock bolt 10, There is no protrusion on the aisle side in a small space such as an aircraft,
There is no risk that the handle 13 will be an obstacle to traffic or that the handle 13 will be damaged by an article hitting the handle 13.

In the torsion coil spring 12, the rear end 14 of the coil portion is in contact with the bolt guide 5, and the rear end 14
A straight line portion 17 extending from the case 1 is in contact with the case 1 side, and the tip end portion 15 of the torsion coil spring 12 is attached to the lock bolt 1.
0 is in contact with the spring receiving pin 16 and the torsion coil spring 12 is compressed between the bolt guide 5 and the spring receiving pin 16, so that the lock bolt 10 slides in the protruding direction by a single spring configuration. The urging and the rotational urging of the handle 13 in the fall direction are performed, the number of parts of the entire apparatus is reduced, and the configuration is simplified.

According to the second aspect of the invention, the handle 13 slightly stands up due to the engagement pin 18 slidingly contacting the inclined cam surface 7 of the keeper 4, and the handle 13 falls over at the moment when the handle 13 gets over the inclined cam surface 7. Then, since the engagement pin 18 engages with the hook portion 8 of the keeper 4, the lock bolt 10 is reliably temporarily fixed in the unlocked position. As a result, when the door 22 is closed, the tip of the lock bolt 10 may collide with the opening edge surface 21 of the container body 20, damaging the opening edge surface 21 or damaging the lock bolt 11 itself. Absent. Further, if the handle 13 is slightly lifted after the door 22 is completely closed and the engaging pin 18 is removed from the hook portion 8 of the keeper 4, the lock bolt 10 is immediately advanced to the locked position by the bias of the torsion coil spring 12. Therefore, the locking operation can be performed easily and accurately.

[Brief description of drawings]

FIG. 1 is a front view of a door lock device according to an embodiment of the present invention.

FIG. 2 is a plan view taken along line XX of FIG.

3 is a cross-sectional plan view taken along the line YY of FIG.

[Explanation of symbols]

1 case 2 dents Side wall of 3 cases 4 keeper 5 bolt guide 6 bolt guide 7 Inclined cam surface of stopper 8 Stopper hook 10 Rock bolt 11 Tip of lock bolt 12 torsion coil spring 13 handle 14 Rear end of coil part of torsion coil spring 15 Tip of torsion coil spring 16 Spring support pin 17 Straight part of torsion coil spring 18 Engagement pin 19 The root of the handle 20 container body 21 Lock hole 22 doors 23 Case side wall through hole 24 Bolt guide hole 25 Bolt guide hole 26 Bottom wall of recess

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05B 63/00-75/00 E05C 1/04 B65D 88 / 12,90 / 00

Claims (2)

(57) [Claims] 1. A case 1 having a shallow recess 2 from the front side to the back side.
The lock bolt 10 is formed in the recess 2 so as to advance and retreat in the direction of the side wall 3 of the recess 2, and the case 1 is provided with a bolt guide 5 into which the lock bolt 10 is inserted.
Is provided, and the handle 13 is fixed to the lock bolt 10, and the handle 13 is located between the position in which the handle 13 falls over the guide hole 24 of the bolt guide 5 and the position in which the handle 13 protrudes from the recess 2. The case 1 is provided with a keeper 4 that engages with a part of the handle 13 in the retracted position of the lock bolt 10, and the torsion coil spring 12 is fitted to the lock bolt 10. The rear end portion 14 of the coil portion of the coil abuts the bolt guide 5, and the linear portion 17 extending from the rear end portion 14
Is in contact with the case 1 side, the tip portion 15 of the torsion coil spring 12 is in contact with the spring receiving pin 16 of the lock bolt 10, and the torsion coil spring 12 is compressed between the bolt guide 5 and the spring receiving pin 16. Cage, torsion coil spring 1
A lock device for a door of a container such as an aircraft in which a lock bolt 10 is slidably biased in a protruding direction by 2 and a handle 13 is rotationally biased by a torsion coil spring 12 in a fall direction. 2. An engaging pin 18 that engages and disengages with the keeper 4 is provided at the tip of the handle 13, and an inclined cam surface 7 that descends toward the side wall 3 of the case 1 is formed on the front surface of the keeper 4. The door according to claim 1, wherein a hook portion 8 for engaging and disengaging the engagement pin 18 is formed on a side surface portion of the keeper 4 adjacent to the highest portion of the inclined cam surface 7. Lock device.