JP2623228B2 - Laterally movable latch lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch lock device in which a hook plate portion and a receiving pin are engaged after a latch body is retreated in one direction by being pushed by a receiving pin.

[0002]

2. Description of the Related Art As shown in Japanese Utility Model Publication No. 57-27879, a conventional latch lock device has a structure in which when a latch member is pushed by a metal receiving portion, the latch body is retracted in the vertical and vertical directions, and then the hook is moved. The operation method in which the plate portion and the receiving pin are engaged, and, as exemplified in Japanese Utility Model Publication No. 4732/1972, when the latch member is pressed by the receiving pin, the latch body rotates and then moves to the hook plate portion. There is an operation method in which the receiving pin is engaged.

However, there has not yet been proposed an operating type latch lock device in which the latch plate is moved in the left-right and lateral directions when pressed by the receiving pin.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel actuation type latch device in which a latch plate moves in a horizontal direction.

[0005]

Means for Solving the Problems Hereinafter, a description will be given using reference numerals in the accompanying drawings. In the laterally movable latch device of the present invention, a shaft hole 1 for a rotary cam plate is formed in a central portion of a front side case 1.
a and spacer receiving holes 1b, 1
c, a rotary cam plate shaft hole 2a is provided at the center of the rear side case 2, and a spacer receiving hole 2 is provided at a corner as appropriate.
b and 2c are provided. A front shaft portion 3b fitted into the shaft hole 1a of the front case 1 and a rear shaft portion 3e fitted into the shaft hole 2a of the rear case 2 project from the disk main body 3a of the rotary cam disk 3 to be frontward. A key recess 3c is provided in the side shaft portion 3b,
A driving projection 3f is provided on the back side of the disk main body 3a so as to be eccentric from the back side shaft portion 3e.

A latch plate 4 is provided between the front case 1 and the rear case 2 so as to be movable in the right and left directions, and a hook plate protruding from above the cases 1 and 2 and engaging with and disengaging from the receiving pin 11. A portion 4a is provided, and an upper surface portion of the hook plate portion 4a is formed on the curved cam surface 4f. The latch plate 4 is provided with a horizontally long guide hole 4b through which the rear shaft 3e of the rotary cam plate 3 is inserted, and a vertically long guide hole 4c through which the driving projection 3f of the rotary cam plate 3 is inserted through the horizontally long guide hole 4b. Provide.

The front ends of the spacers 5 and 7 are fitted into the receiving holes 1b and 1c of the front case 1, and the rear ends of the spacers 5 and 7 are fitted into the receiving holes 2b and 2c of the rear case 2. And the spring 6 causes the latch plate 4 to return to the position where the hook plate portion 4a engages with the receiving pin 11. The key 8 is provided with a key shaft portion 8a to be fitted into the key recess 3c of the rotary cam disk 3.

[0008]

The latch lock device can be folded into a foldable container.
When the two frame members 12a, 12b facing each other are locked and locked in a folded state, the combined and integrated cases 1 and 2 are fixed to one frame member 12a and the other frame member 12a. The receiving pin 11 is fixed to the member 12b.

In the final stage of the folding operation as shown in FIG. 12, the receiving pin 11 comes into contact with the hook plate portion 4a of the latch plate 4 as shown in FIG. When the folding is further advanced, the receiving pin 11 pushes the hook plate 4a, so that the latch plate 4 is cooperated with the curved cam surface 4f of the hook plate 4a and the receiving pin 11 as shown in FIG. , And moves in the right lateral direction against the bias of the spring 6.

When the hook plate 4a moves to the rightmost position, the receiving pin 11 passes through the curved cam surface 4f. At this moment, the latch plate 4 immediately slides to the left by the bias of the spring 6, and As shown in FIG. 11, the receiving pin 11 is deeply engaged with the hook plate portion 4a. At this time, the container 12 is in the final folded state where the frame members 12a and 12b are in considerable contact, and the engagement between the receiving pin 11 and the latch plate 4 is held by the bias of the spring 6, so that the container 12 is The state is locked and locked.

In order to release the lock, the key shaft 8a of the key 8 is inserted into the key recess 3c of the rotary cam plate 3, and then the key 8 is turned in a predetermined direction. By this rotation operation, the driving projection 3f of the rotary cam plate 3 is moved to the vertically long guide hole 4c of the latch plate 4.
, The latch plate 4 moves rightward and leftward against the bias of the spring 6. Therefore, the engagement between the receiving pin 11 and the hook plate portion 4a is released, and the two frame members 12
a, 12b can be pulled apart to spread the container 12 into use.

[0012]

In the illustrated embodiment, spacer receiving holes 1b and 1c are provided in the upper left corner and the lower right corner of the front case 1, respectively.
Spacer receiving holes 2b and 2c are provided in the upper left corner and the lower right corner of the rear side case 2, and both cases are fixed by caulking the front end and the rear end of the two left and right spacers 5 and 7. They are interconnected and integrated. The hook plate portion 4a of the latch plate 4 is formed in the oblong hole 1 of the upper surface plate portion 1e of the front side case 1.
d. The spacers 5 and 7 are provided with screw holes 9 and 10, and the cases 1 and 2 are provided with screw holes 9 and 10 respectively.
It is attached to an object to be used, for example, one of the frame members 12a of the foldable container 12 by screws screwed into the container.

The receiving pin 11 is attached to the other frame member 12b of the foldable container 12. The frame member 12b has a two-plate structure spaced apart from each other, and a space is secured for the hook plate portion 4a of the latch plate 4 to enter and move laterally. As shown in FIG. 10, the right side plate 1f of the front case 1 is provided with a window hole 1g into which the right end 4d of the latch plate 4 enters when the latch plate 4 is retracted rightward and leftward.

A key recess 3c is provided concentrically on the front shaft portion 3b of the rotary cam disk 3, and a passive recess 3d is eccentrically provided on the bottom surface of the key recess 3c. The key 8 has a front surface of a key shaft portion 8a fitted into the key recess 3c of the rotary cam disk 3,
An operation projection 8b fitted into the passive recess 3d is eccentrically provided. The return biasing spring 6 of the latch plate 4 is constituted by a torsion coil spring, the coil portion 6a is fitted into the spacer 5, and the bent end of one linear end 6b is formed as a through hole at the right end of the latch plate 4. Is inserted into the spring receiving portion 4f of
The other straight end 6c is the right side plate 1f of the front case 1.
Is in contact with The straight end portion 6b is prevented from being removed from the through hole by the front side case 1.

[0015]

As described above, in the latch lock device of the present invention, the receiving pin 1 is provided on the curved cam surface 4f of the hook plate portion 4a.
1 , the latch plate 4 moves not in the vertical and vertical directions of the cases 1 and 2 but in the horizontal direction and the hook plate portion 4.
a and the receiving pin 7 are engaged with each other, and a novel laterally-operating type latch lock device different from the conventional vertical-moving type and rotary-moving type is provided. It is most suitable for locking and locking the facing frame members in a folded state.

Further, since the latch lock device of the present invention has a simple structure and a relatively small number of components, it can be easily and efficiently performed after the production and assembly.

[Brief description of the drawings]

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

FIG. 2 is a rear view of the latch lock device.

FIG. 3 is a plan view of the latch lock device.

FIG. 4 is a bottom view of the latch lock device.

FIG. 5 is a left side view of the latch lock device.

FIG. 6 is a right side view of the latch lock device.

FIG. 7 is a sectional view taken along line AA of FIG. 3;

FIG. 8 is a sectional view taken along the line BB of FIG. 1;

FIG. 9 when the receiving pin contacts the hook plate.
It is CC sectional view taken on the line of FIG.

10 is a cross-sectional view taken along the line CC of FIG. 3 at the time when the latch plate is pushed by the receiving pin and retreats in the right lateral direction.

11 is a cross-sectional view taken along the line CC of FIG. 3 at the time when the receiving pin and the latch plate are engaged.

FIG. 12 is a perspective view of a foldable container to which the latch lock device is applied.

[Explanation of symbols]

 Reference Signs List 1 front case 1a shaft hole 1b receiving hole 1c receiving hole 2 rear case 2a shaft hole 2b receiving hole 2c receiving hole 3 rotating cam plate 3a disk main body 3b front side shaft portion 3c key recess 3d passive recess 3e rear side Shaft 3f Driving projection 4 Latch plate 4a Hook 4b Horizontal guide groove 4c Vertical guide hole 4d Right end of latch plate 4e Spring receiving portion 4f Curved cam surface 5 Spacer 6 Torsion coil spring for biasing latch plate 7 Spacer 8 Key 8a Key Shaft 8b Operation protrusion 9 Screw hole 10 Screw hole 11 Receiving pin 12 Foldable container

Claims (1)

(57) [Claims] 1. A rotary cam plate shaft hole 1a is provided at a central portion,
A front case 1 provided with spacer receiving holes 1b and 1c at appropriate corners; a rear case provided with a rotary cam plate shaft hole 2a at a central portion and spacer receiving holes 2b and 2c at appropriate corners. 2, a front-side shaft portion 3b fitted into the shaft hole 1a of the front-side case 1 and a rear-side shaft portion 3e fitted into the shaft hole 2a of the rear-side case 2 project from the disk main body 3a to form a front-side shaft portion. A rotary cam plate 3 provided with a key recess 3c in the main body 3b and a driving projection 3f eccentric from the rear shaft portion 3e on the rear side of the disk main body 3a; and between the front case 1 and the rear case 2. The hook plate portion 4a, which is movably accommodated in the left and right lateral directions and engages with the receiving pin 11 , protrudes from the cases 1 and 2, and has a horizontally long guide hole 4b through which the rear shaft portion 3e of the rotary cam plate 3 is inserted. The driving projection 3 of the rotary cam plate 3 is provided in the horizontally long guide hole 4b.
The latch plate 4 is provided with a vertically long guide hole 4c through which the f is inserted, and the upper surface of the hook plate 4a is formed on the curved cam surface 4f.
The front end is fitted into the receiving holes 1b, 1c of the front case 1, and the rear end is received in the receiving holes 2b, 2 of the rear case 2.
c, spacers 5 and 7 interconnecting the two cases 1 and 2; a spring 6 for urging the latch plate 4 to return to a position where the latch plate 4 is engaged with the receiving pin 11; And a key 8 fitted in the recess 3c.
A laterally movable latch lock device formed such that when the curved cam surface 4f of a is pushed by the receiving pin 7, the latch plate 4 is retracted to the right and left.