JPH08282277A - Snatch lock device - Google Patents

Abstract

PURPOSE: To provide a snatch lock device, which can be canceled by the operating force in the lateral direction and which can be applied to the usage different from the conventional way. CONSTITUTION: A lock plate 12 is fitted to a left intermediate part of a front and a rear side wall plates of a case 5 by a first horizontal shaft 6 freely to be turned, and energized for rotation clockwise by an energizing spring 7, and a locking lever 15 is fitted between the lower ends of the front and the rear side wall plates by a second horizontal shaft 13, and energized for rotation counterclockwise by the energizing spring 7, and a locking projection 14 to be engaged with a recessed part of the lock plate 12 is provided in the left surface side of the intermediate part of the locking lever 15. A canceling lever 17 is fitted to a lower side wall plate 16 of the case 5 by a vertical shaft 2, and an operating cam surface 21 for pushing the driven end 20 of the locking lever 15 is provided in the canceling lever 17, and the canceling lever 17 is operated for rotation by the operating force in the lateral direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snatch lock device used for side doors of buses and the like.

[0002]

2. Description of the Related Art In a conventional snatch lock device, an elongated receiving groove for receiving and receiving a receiving rod is provided in front and rear side wall plates of a case,
The front and rear side wall plates are pivotally attached by a horizontal axis, and are urged in the rotational direction by springs to provide a locking recess for engaging and disengaging the receiving rod, and a locking protrusion that engages with the locking projection of the latch lever during locking. The lock plate is provided, a latch lever that is biased in the rotational direction by a spring, and a receiving rod fixed to the side surface of the fixed frame body. The receiving rod is fitted into the receiving groove for locking.

However, in this conventional device, the latch lever is operated by pulling an interlocking member such as a wire arranged in the same plane as the latch lever by pulling out the door handle. Since the latch lever cannot be operated by the interlocking member that is arranged in the plane orthogonal to the plane where the latch lever is arranged and that is applied with the operation force in the lateral direction, the usage form of the snatch lock device is limited.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a snatch lock device which can be unlocked by a lateral operation force and which can be applied to a usage pattern different from the conventional one.

[0005]

The snatch lock device according to the present invention has a casing 5 fixed to a door 1 and a vertically long portion opened in the middle of an upper end surface thereof. Is formed in the middle of the upper ends of the front and rear side wall plates 4, 4.

The lock plate 12 is pivotally attached to the left middle portion of the front and rear side wall plates 4 and 4 by a first horizontal pivot shaft 6, and an urging spring 7 is provided.
Is provided with a recess 8 that is urged to rotate clockwise by the direction toward the first horizontal pivot 6 at the right end, and a passive protrusion 9 is continuously formed on the upper side of the recess 8. A locking recess 11 is provided at the edge portion, and a stop protrusion 10 projecting into the receiving groove 3 is continuously formed on the upper side of the locking recess 11.

The latch lever 15 is pivotally mounted between the lower end portions of the front and rear side wall plates 4 and 4 by a second horizontal pivot shaft 13 and is urged to rotate counterclockwise by an urging spring 7 to lock the lock plate 1.
2 is provided on the left side of the intermediate portion, and the release lever 17 is pivotally attached to the lower side wall plate 16 of the lower end portions of the front and rear side wall plates 4 and 4 by the pivot shaft 2 and the operation cam. Face 21
The passive end 20 of the latch lever 15 is pushed by. The receiving rod 19 is fixed to the side surface of the fixed frame body 18, enters the receiving groove 3 of the case 5, and enters the locking recess 1 of the lock plate 12.
1 is engaged.

[0008]

As shown in FIG. 1, when the door 1 is in the open state, the lock plate 12 has the passive projection 9 in the receiving groove 3 approximately 4 times.
At the stand-by position projecting at an angle of 5 degrees, the stop protrusion 10 is in contact with the case 5, and the stop protrusion 14 of the latch lever 15 is in contact with the lower surface of the right end portion of the lock plate 12.

When the door 1 moves in the closing direction, the receiving rod 19
Enters the receiving groove 3 of the case 5 from the upper end opening, and the passive protrusion 9
When the receiving rod 19 abutting on the upper surface of the lock plate 12 presses the passive protrusion 9 downward, the lock plate 12 rotates in the clockwise direction against the bias of the bias spring 7. The stop projection 14 of the latch lever 15 is in contact with the lower surface of the right end portion of the lock plate 12.

As shown in FIG. 2, when the door 1 is in the fully closed state, the stop projection 14 of the latch lever 15 engages with the recess 8 of the lock plate 12. The receiving rod 19 is deeply engaged with the locking recess 11 via the inner surface of the passive protrusion 9.

The lock plate 12 must rotate counterclockwise in order for the receiving bar 19 to escape from the locking recess 11. However, rotation of the lock plate 12 in the counterclockwise direction causes the latch lever to rotate. It is blocked by the engagement of the stop projection 14 of 15 with the recess 8 of the lock plate 12.

In order to open the door 1 by releasing the locking and locking, a lateral operating force is applied from the interlocking member 26 arranged on the plane orthogonal to the plane on which the latch lever 15 is arranged,
The release lever 17 is rotationally biased counterclockwise, and the passive cam 20 of the latch lever 15 is pressed by the operation cam surface 21 of the release lever 17. By this operation, the latch lever 15 is rotated in the clockwise direction against the bias of the bias spring 7, and the engagement between the blocking projection 14 of the latch lever 15 and the recess 8 of the lock plate 12 is released. It At the moment when this releasing operation is performed, the lock plate 12 is rotated counterclockwise by the biasing spring 7.

[0013]

In the illustrated embodiment, the first horizontal pivot 6 penetrating the front and rear side wall plates 4 and 4 of the case 5 is prevented from being pulled out by retaining rings fitted in annular grooves at the front and rear ends. Similarly, the second horizontal pivot 13 parallel to the horizontal pivot 6 is also prevented from being pulled out by the retaining ring.

Further, a tapered surface portion 27 is provided on the left and right inner surfaces of the upper end portion of the receiving groove 3 provided in the case 5, and serves as a guiding means when the receiving rod 19 is inserted. Receiving rod 19 is U
It is composed of a metal rod bent in a letter shape, and the receiving rod 19
Each of the front and rear ends is fixed to a mounting board 22 by welding or the like, and the mounting board 22 is fixed to a fixed frame body 18 such as a cargo container container body by a screw passing through a mounting hole 23. The mounting position of the receiving rod 19 is not limited to the middle portion of the fixed frame body 18.

A biasing spring 7 for biasing the rotation of the lock plate 12
Is a compression coil spring whose left end is engaged with a first spring receiving portion 24 provided on the lower portion of the lock plate 12 and whose right end is engaged with a second spring receiving portion 25 provided on the lower portion of the latch lever 15. The right side surface of the release lever 17 is formed in an arc shape.

Since the case 5 is approximately half the height of the front and rear side wall plates 4 and 4, the connecting portion is below the mounting surface, so that the interlocking member 26 such as a wire can be retracted inside the door panel. , Is made thin.

[0017]

As described above, in the snatch lock device of the present invention, the first left and right side portions of the front and rear side wall plates 4 and 4 of the case 5 have the first structure.
The lock plate 12 is pivotally attached by the horizontal pivot shaft 6, and is rotated and biased clockwise by the biasing spring 7, and the latch lever 15 is held between the lower end portions of the front and rear side wall plates 4, 4 of the case 5 by the second horizontal pivot shaft 13. Is pivoted, and is urged to rotate counterclockwise by an urging spring 7, and a stop projection 14 that engages with the recess 8 of the lock plate 12 is provided on the left side of the middle portion of the latch lever 15, Since the release lever 17 is pivotally attached to the lower side wall plate 16 by the vertical pivot 2 and the operation cam surface 21 for pushing the passive end portion 20 of the latch lever 15 is provided on the release lever 17, the release lever 1 is provided.
By rotating 7 by operating force from the lateral direction,
The engagement between the locking recess 10 of the lock plate 12 and the receiving rod 19 can be immediately released, and the snatch lock device can be applied to a usage pattern different from the conventional one.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a snatch lock device according to an embodiment of the present invention, showing an unlocked state.

FIG. 2 is a vertical cross-sectional view of the snatch lock device in a locked state.

FIG. 3 is a bottom view of the snatch lock device in a locked state.

[Explanation of symbols]

 1 Door 2 Axis 3 Receiving Groove 4 Front and Back Side Wall Plates 5 Case 6 First Horizontal Axis 7 Energizing Spring 8 Depression 9 Passive Protrusion 10 Stop Protrusion 11 Locking Recess 12 Lock Plate 13 Second Horizontal Axis 14 Blocking Protrusion 15 Latch Lever 16 Lower Side Wall Plate 17 Release Lever 18 Fixed Frame Body 19 Receiving Bar 20 Passive End of Latch Lever 21 Operation Cam Surface of Release Lever 22 Mounting Board 23 Mounting Hole 24 First Spring Receptor 25 Second Spring Receptor 26 Interlocking member to handle for door, etc. 27 Tapered surface for guide of receiving rod

Claims (1)

[Claims] 1. A case 5 provided with a vertically long receiving groove 3 fixed to a door 1 and opened in the middle of the upper end faces in the middle of the upper end portions of the front and rear side wall plates 4, 4. First in the middle left
A recess 8 that is pivotally attached by a horizontal pivot 6 and is rotated and biased clockwise by a biasing spring 7 and that is drawn toward the first horizontal pivot 6 is provided at the right end portion, and a passive protrusion 9 is provided in the recess 8. A lock which is continuously formed on the upper side, is provided with a locking recess 11 on the upper edge of the passive protrusion 9, and a stop protrusion 10 protruding into the receiving groove 3 is continuously formed on the upper side of the locking recess 11. Board 12;
A stop projection that is pivotally mounted between the lower ends of the front and rear side wall plates 4 and 4 by a second horizontal pivot shaft 13 and is urged counterclockwise by an urging spring 7 to engage with the recess 8 of the lock plate 12. 14 and a latch lever 15 provided on the left side of the middle portion;
A release lever 17 pivotally attached to a lower side wall plate 16 at the lower ends of the front and rear side wall plates 4 and 4 by a pivot 2, and an operation cam surface 21 for pushing a passive end portion 20 of a latch lever 15; A snatch lock device, which is fixed to a portion, and which receives the receiving groove 3 of the case 5 and engages with the locking recess 11 of the lock plate 12 with a receiving rod 19.