JPH0544451Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used for the door of a shipping container, etc., and when the door is closed, the door is automatically locked against a fixed frame such as the container body. To provide a one-touch operation type door lock device in which a door is unlocked when a rotor of a lock part is rotated with a key and the door is automatically spring-driven in the opening direction.

[Prior Art] In a conventional locking device for firmly and fully locking a door to a fixed frame, a lock body is fixed to the door, and a locking plate is fixed to the inner end of a rotor housed in the lock body. ,
The lock plate is engaged with a receiver provided on the fixed frame side.

[Problem to be solved by the invention] In this conventional door locking device, in order to open the door, a key is inserted into the keyhole of the rotor, and the rotor is unlocked from the lock body by a pin tumbler locking mechanism or the like. The key is used to turn the rotor in a predetermined direction to remove the locking plate from the receiver, thereby unlocking the door relative to the fixed frame. Then, put your hand on the handle and pull the door toward you to rotate it in the opening direction.

On the other hand, when closing and locking the door, push and rotate the door in the closing direction, hold the door in the closed position, insert the key into the rotor, rotate the rotor in the opposite direction, and place the locking plate in the receiver. engage.

In this way, conventional door locking devices require two operations to close and lock the door: pushing and rotating the door, and then rotating the rotor using the key. Opening the lock requires two operations: reverse rotation of the rotor using the key and pulling and rotation of the door.

Therefore, the purpose of the present invention is to automatically close and lock the door only by pushing and rotating the door, and
To provide a one-touch operation type door locking device in which the door is automatically unlocked and opened only by rotating a rotor using a key.

[Means for Solving the Problems] The one-touch operation type door locking device of the present invention will be described below using the reference numerals in the attached drawings. A fixed case 5 is provided with a split groove 4 opening toward the front side along the moving direction of the door 1; The short tongue piece 7 and the long tongue piece 8 are connected to the locking groove 9 on the front side.
and a lock lever 11 provided with a locking arm 10 on the rear side;
a spring 12 for rotationally biasing the lock lever 11 so as to protrude crosswise; a spring 12 that is housed in a bearing hole 14 in the longitudinal direction of the intermediate partition wall 13 of the fixed case 5, and a receiver on the front side of which the locking arm 10 engages and disengages; a locking shaft 17 having a groove 15 in the diametrical direction, a locking groove 16 formed by cutting out an end of one side 15a of the receiving groove 15 and providing a locking groove 16 on the back side of the receiving groove 15 in which the locking arm 10 is engaged and disengaged; a spring 18 that rotationally biases the locking shaft 17 so that the arm 10 comes into contact with the receiving groove side surface 15a; a lock 22 having an operating cam plate 21 fixed to its end; a passive plate 23 fixed to the rear end of the locking shaft 17 and rotationally driven by the operating cam plate 21; fixed to a fixed frame 24;
When the door 1 is closed, it enters the split groove 4 of the fixed case 5 and pushes the long tongue piece 8 of the lock lever 11,
and a receiver 25 that engages with the locking groove 9.

[Operation] When the door 1 is in the unlocked state as shown in FIGS. 1 to 9, the lock lever 11
is in contact with the inner surface of the front wall plate portion 27 of the fixed case 5, and the long tongue piece 8 is in a standby position intersecting the split groove 4 of the fixed case 5, and is held in this position by the rotational bias of the spring 12. has been done. At this time, the locking arm 10 of the lock lever 11 is in contact with one side 15a of the receiving groove 15, as shown in FIG. 8, and the rotation of the locking shaft 17 is inhibited. Further, as shown in FIG. 2, the operating cam plate 21 is in a standby position separated from the passive plate 23.

When the door 1 is pushed and rotated to close as shown in FIG. 9, in the final stage, the receiver 25 enters the split groove 4 from the front side and pushes the long tongue piece 8. Therefore, the lock lever 11 is rotated against the rotational bias of the spring 12, and when the door 1 is completely closed, the receiver 25 is deeply inserted into the locking groove 9 between the short tongue piece 7 and the long tongue piece 8. When engaged, the door 1 is automatically locked to the fixed frame 24. In the process of the lock lever 11 rotating to the locking position in this way, the locking shaft 17 is moved by the bias of the spring 18 at the moment the locking arm 10 moves along the receiving groove side surface 15a and escapes from the receiving groove 15. Due to the rotation, the locking arm 10 immediately engages with a locking groove 16 connected to the back side of the receiving groove 15.
The engagement between the locking arm 20 and the locking groove 16 is maintained precisely by the rotational bias of the springs 12 and 18.

To unlock the key 1 that has been closed and locked in this way, insert the key 26 into the keyhole 55 of the rotor 20 of the lock 22.
is inserted, the rotor 20 is unlocked from the lock main body, and the rotor 20 is rotated using the lock 26.

As the rotor 20 rotates, the operation cam plate 21
presses the side surface of the passive plate 23, so that the locking shaft 17 is reversely rotated in the direction of the arrow in FIG. 11 against the rotational bias of the spring 18. This reverse rotation of the locking shaft 17 releases the engagement between the locking groove 16 and the locking arm 10, allowing the locking arm 10 to enter the receiving groove 15, so that the lock lever 11 is biased to rotate by the spring 12. Then it quickly reverses. When the lock lever 11 is rotated, the long tongue piece 8 pushes the receiver 25, so that the door 1 is automatically driven in the opening direction by the spring force of the spring 12.

[Embodiment] In the illustrated embodiment, the pivot 6 is fixed to both side wall plates 2 and 3 of the fixed case 5, and the biasing spring 12 of the lock lever 11 is constituted by a coiled spring, and the It is fitted into the pivot 6. One straight end 12a of the spring 12 is hooked to the root of the short tongue piece 7, the other straight end 12b abuts the end wall plate 28 of the fixed case 5, and the lock lever 11 is connected to the seventh
It is urged to rotate in the direction of the arrow in the figure. Lock shaft 17
The biasing spring 18 is also composed of a wound spring, and the biasing spring 18 of the locking shaft 1
It is fitted into the rear end small diameter portion 29 of 7. The spring 1
One end 18a of 8 is inserted into the vertical hole 30 of the locking shaft 17, and the other end 18b is inserted into the vertical hole 3 of the intermediate partition wall 13.
1, and the locking shaft 17 is urged to rotate in the direction of the arrow in FIG. A connecting block 32 is driven and fixed to the rear end of the locking shaft 17, and the passive plate 23 fitted into the horizontal groove 34 of the connecting block 32 is
It is fixed to the locking shaft 17 by a screw 33 screwed into the connecting block 32.

A disk tumbler locking mechanism is used as the locking mechanism of the lock 22, and the rear end corner shaft portion 3 of the rotor 20
The operation cam plate 21 that is fitted into the rotor 20 is fixed to the rotor 20 by a nut 37 that is screwed onto a screw shaft 36 of the rotor 20. The fixed case 5 includes a portion 38 that accommodates the lock lever 11 and the lock shaft 17,
It is divided into a part 39 which accommodates the lock 22, and both parts 38 and 39 are fixed by a driving lock pin 40.

The fixed case 5 is housed on the back side of the door 1, and the front end of the lock 22 is exposed to the through hole 42 of the end plate 41 of the door 1. The fixed case 5 is fixed to the door 1 by screws 46 that pass through holes 45 in the auxiliary plate 44 and are screwed into the screw holes 43 in the portion 39. L
The receiver 25 made of a letter-shaped plate is fixed to the inner surface of the side plate 48 of the fixed frame 24, and has a window hole 47 at its tip, into which the short tongue piece 7 of the lock lever 11 enters while rotating. A packing material 50 is fixed to the outside of the auxiliary plate 49 for fixing the receiver 25.

In this embodiment, a regulating lever 51 is pivotally attached to the fixed case 5 by a pivot 6 so as to be overlapped with a lock lever 11 . A coiled spring 5 fitted to a pivot 6
One straight end 52a of the fixed case 5 contacts the inner surface of the end wall plate 28 of the fixed case 5, and the other straight end 52a of the
2b is in contact with a side protrusion 53 of the regulating lever 51, and the regulating lever 51 is urged to rotate in the direction of the arrow in FIG. 10 by the spring 52. As shown in FIG. 10, the tip of the regulating lever 51 engages with the lower side surface 15b of the receiving groove 15 when the locking arm 10 of the locking lever 11 is engaged with the locking groove 16 of the locking shaft 17. It matches. Due to the reverse rotation of the locking shaft 17, the engagement between the locking arm 10 and the locking groove 16 comes into contact, and in the process of the locking lever 11 rotating in the unlocking direction due to the bias of the spring 11, the side part of the regulating lever 51 Since it collides with the protrusion 54, the restriction lever 51 then rotates integrally with the lock lever 11, and the engagement between the restriction lever 51 and the locking shaft 17 is released.

[Effect of the invention] As described above, in the locking device of the present invention, when the door 1 is pushed and rotated to close, the receiver 25 collides with the long tongue piece 8 of the lock lever 11, the lock lever 11 rotates, and the lock lever 11 is engaged. Stop groove 9 and receiver 25
Since the door 1 is automatically engaged, closing and locking of the door 1 can be easily done with a one-touch operation. Furthermore, when the rotor 20 of the lock 22 is rotated by the key 26, the operating cam plate 21 rotates the passive plate 23 of the locking shaft 17, so that the engagement between the lock lever 11 and the locking groove 16 of the locking shaft 17 is prevented. At the same time, the spring 12 is released and the receiver 25 is released.
is pushed by the long tongue piece 8 of the lock lever 11,
The door 1 is automatically driven in the opening direction, and the door 1 can be easily unlocked and opened by one-touch operation.

[Brief explanation of the drawing]

Fig. 1 is a front view of a one-touch operation type door locking device according to an embodiment of the present invention, Fig. 2 is a rear view of the same locking device, Fig. 3 is a left side view of the same device, and Fig. 4 is the same. FIG. 5 is a right side view of the device, FIG. 5 is a plan view of the device, and FIG. 6 is a bottom view of the device. Figure 7 is A- in Figure 1.
8 is a sectional view taken along the line B--B in FIG. 1. FIG. 9 is a cross-sectional view of a door using the same device just before closing, and FIG. 10 is a cross-sectional view of the door in a closed state. FIG. 11 is a sectional view taken along the line CC in FIG. 10. 1...Door, 2, 3...Side wall plate part, 4...Divide groove,
5... Fixed case, 6... Pivot, 7... Short tongue piece,
8... Long tongue piece, 9... Locking groove, 10... Locking arm, 11... Lock lever, 12... Biasing spring, 13... Intermediate partition wall, 14... Bearing hole, 1
5... Receiving groove, 15a... High side surface of receiving groove, 15b
...Low side surface of receiving groove, 16...Lock groove, 17...
... Locking shaft, 18 ... Biasing spring, 19 ... End wall plate section, 20 ... Rotor, 21 ... Operation cam plate, 2
2...lock, 23...passive board, 24...fixed frame board, 25...receptacle, 26...key.

Claims (1)

[Scope of utility model registration request] A fixed case 5 is fixed to the door 1 and has a split groove 4 opening toward the front side in a pair of side wall plate parts 2 and 3 along the moving direction of the door 1; perpendicular to the side wall plate parts 2 and 3. A lock lever is pivotally connected to a fixed case 5 by a pivot shaft 6, and has a short tongue piece 7 and a long tongue piece 8 on the front side with respect to the pivot shaft 6 via a locking groove 9, and a locking arm 10 on the rear side. 11; the lock lever 1 is arranged so that the long tongue piece 8 protrudes across the split groove 4;
1; and a spring 12 that biases the locking arm 10 to rotate; and a receiving groove 15 that is accommodated in a front-rear bearing hole 14 of the intermediate partition wall 13 of the fixed case 5 in the front-rear direction, and a receiving groove 15 in which the locking arm 10 engages and disengages is provided in the diametrical direction on the front side. , one side 15 of the receiving groove 15
A locking shaft 17 with a locking groove 16 cut out at the end of a to provide a locking groove 16 on the back side of the lecturer 15 in which the locking arm 10 is engaged and released.
and; a spring 18 that rotationally biases the locking shaft 17 so that the locking arm 10 comes into contact with the receiving groove side surface 15a;
The key 2 is fixed to the end wall plate part 19 of the fixed case 5.
a lock 22 having an operating cam plate 21 fixed to the inner end of a rotor 20 which is rotationally operated by a rotor 6 ; The plate 23 is fixed to the fixed frame 24, and when the door 1 is closed, it enters the groove 4 of the fixed case 5 and locks the long tongue piece 8 of the lock lever 11.
A one-touch operation type door locking device comprising a receiver 25 which is pushed and engaged with the locking groove 9.