JPH0243971Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a temporary locking device with a simple structure.

[Prior Art] In conventional full-scale lock devices such as pin tumbler type cylinder locks, when a key is inserted into the keyhole of a rotor, the tumbler pin and driver pin pressed by the key lock move in the radial direction of the rotor and the lock body. By moving a predetermined distance within each pin hole, the contact point of the driver pin and tumbler pin comes to be on the shear line between the lock body and the rotor, thereby releasing the lock of the rotor from the lock body. Thereafter, when the rotor is rotated in a predetermined direction with the key, the stopper plate fixed to the rear end of the rotor separates from the receiver and comes to the unlocked position.

Although these full-scale locking devices have relatively high safety and reliability against unauthorized unlocking, the locking mechanism is complex, so manufacturing costs tend to be high, and the locking function is not as strong. It was not suitable for use as a temporary fixing means that does not require.

[Problem to be solved by the invention] Therefore, the purpose of the invention is to create a temporary locking device that has a simplified structure, can reduce manufacturing costs, and is optimal for use as a temporary locking means. It is to provide.

[Means for Solving the Problems] Hereinafter, it will be explained using reference numerals in the attached drawings. In the temporary locking device of the present invention, a rotor 2 is attached to a lock body 1.
A stopper plate 13 is fixed to the rear end of the rotor 2, a slot 7 is provided across the rotor 2 in the diametrical direction, and a pair of locks are inserted into the slot 7 so as to be movable in the radial direction. The stop plates 5 and 6 are accommodated, and the lock stop plates 5 and 6 are urged to protrude by a compression coil spring 8 inserted between them.

V-shaped square grooves 9 and 10 are provided on the inner circumferential surface 1a of the lock body 1, with which the tip ends of the chevron-shaped cross sections of the lock plates 5 and 6 engage when the stop plate 13 is in the locked position. A small diameter circular concave portion is eccentrically arranged on the bottom surface of the concave portion to form a plurality of circular concave portions 4a, 4 having different diameters.
b and 4c are provided at the front end of the rotor 2.

A plurality of circular convex portions 13a, 13b, 1 having different diameters correspond to the circular concave portions 4a, 4b, 4c.
3c is provided at the tip of the key 14, and each circular recess 4a,
Inner peripheral surfaces of 4b and 4c and each circular convex portion 13a and 13
The outer peripheral surfaces of b and 13c are formed into tapered surfaces.

[Function] The lock body 1 is fixed to the door 20, and the receiver 19 is fixed to a fixed frame (not shown) such as a box body. In the locked position where the stop plate 17 is engaged with the receiver 19, the tips of the lock plates 5 and 6 are engaged with the square grooves 9 and 10 of the lock body 1, as shown in FIG. , this engagement is maintained by the bias of the compression coil spring 8.

To unlock the door 16 from the fixed frame, press the circular protrusion 13 of the key 14 as shown in FIG.
a, 13b, 13c are circular recesses 4a, 4 of the rotor.
b, 4c, and rotate while pressing the key 14. A plurality of circular convex portions 13a, 13b,
13c and the circular recesses 4a, 4b, 4c are both eccentrically arranged, the rotational force applied to the key 14 is reliably transmitted to the rotor 2, and the rotor 2 is rotated together with the key 14.

When the key 14 is turned with sufficient force to overcome the bias of the compression coil spring 8, at the beginning of rotation of the rotor 2,
Slanted outer surfaces and square grooves 9, 10 at the tips of locking plates 5, 6
Since the inclined inner surfaces of the locking plates 5 and 6 function as cam slopes, the tips of the locking plates 5 and 6 escape from the square grooves 9 and 10.

The locking plates 5 and 6 pushed back into the slots 7 have their tips held at their ends as shown in FIG. It comes into sliding contact with the inner circumferential surface 1a of the lock body 1.

[Embodiment] In the embodiment shown in FIGS. 1 to 10, the stop plate 17 is fitted onto the screw shaft 3 of the rotor 2 and fixed to the rotor 2 by a nut 18. The lock body 1 is fitted into the receiving hole 21 of the door 20 from the front side, and is fixed to the door 20 by a nut 22 screwed into the outer circumferential thread. There are three circular recesses on the rotor 2 and three circular protrusions on the key 14.

In this embodiment, other V-shaped square grooves 11 and 12, which are engaged with the tips of the chevron-shaped cross sections of the locking plates 5 and 6, are placed in the lock body 1 at an interval of 90 degrees from the square grooves 9 and 10. It is provided on the inner peripheral surface 1a.

Therefore, when the rotor 2 rotates 90 degrees from the locked position as shown in FIG. engages with these square grooves 11 and 12, and this engagement is maintained by the bias of the compression coil spring 8, so that the rotor 2 is accurately held in the unlocked position. At this time, the raised portion 15 of the rotor 2 comes into contact with the end surface of the stepped groove 16 of the lock body 1, thereby preventing further rotation of the rotor 2.

As illustrated in FIGS. 11 to 13, the number and arrangement of the circular recesses 4a, 4b... of the rotor 2 can be changed in various ways, and the circular protrusions 13a, 13b... of the key 14 can also be changed. Changes will be made accordingly.

[Effect of the invention] As described above, in this invention, the rotor 2 is attached to the lock body 1.
The locking plates 5 and 6 accommodated in the slots 7 of the rotor 2 are urged to protrude by the compression coil spring 8, and the V-shaped square grooves 9 and 10, in which the tips of the locking plates 5 and 6 engage, are inserted. A plurality of circular recesses 4a, 4b, 4c are provided on the inner circumferential surface 1a of the lock body 1, and a plurality of circular recesses 4a, 4b, 4c are provided at the front end of the rotor 2. 13a, 13b, 13c are fitted,
The key 14 is pushed and turned to rotate the rotor 2, thereby allowing the tips of the locking plates 5 and 6 to escape from the square grooves 9 and 10, simplifying the overall structure and reducing the number of components. Since the number is small, the cost of manufacturing and assembling the temporary locking device can be significantly reduced.

Furthermore, if one circular recess is provided on the rotor and one circular protrusion is provided on the key, it is not possible to transmit the rotational force from the key to the rotor, but in the present invention, a small diameter A plurality of circular recesses 4a, 4b, and 4c are arranged eccentrically in the rotor 2.
The regular key 1 is provided with a plurality of circular protrusions 13a, 13b, 13c correspondingly.
4, the rotor 2 can be removed from the key 14 by using
The rotational force is reliably transmitted to the rotor 2, and the rotor 2 can be rotated smoothly against the bias of the compression coil spring 8.

Furthermore, in the present invention, the tips of the locking plates 5 and 6 are strongly engaged with the square grooves 9 and 10 by the biasing force of the compression coil spring 8, so that the rotor 2 is accurately held in the locked position and Since the inner circumferential surfaces of the circular recesses 4a, 4b, and 4c are formed into tapered surfaces, for example, even if two rods are inserted into the two circular recesses to rotate the rotor 2, the tapered surfaces Because the tip of the bar escapes outside the circular recess when guided, it is extremely difficult to illegally unlock the lock with any tool other than the official key 14. A locking device can be provided.

[Brief explanation of the drawing]

1 to 10 show a temporary locking device according to an embodiment of the present invention, FIG. 1 is a front view of the temporary locking device, and FIG. 2 is a right side view of the temporary locking device. , FIG. 3 is a plan view of the temporary locking device. FIG. 4 is a left side view of the key used in the temporary locking device, and FIG. 5 is a front view of the key. Figure 6 is A- in Figure 1.
7 is a sectional view taken along the line B-B' in FIG. 2, and FIG. 8 is a partial sectional view when a key is inserted into the temporary locking device. FIG. 9 is a sectional view corresponding to FIG. 7 while the key is being rotated, and FIG. 10 is a sectional view corresponding to FIG. 7 when the key is unlocked. 1st
1 is a front view of a temporary locking device according to another embodiment of the present invention, FIG. 12 is a front view of a temporary locking device according to yet another embodiment of the present invention, and FIG. 13 is a front view of a temporary locking device according to another embodiment of the present invention. FIG. 3 is a front view of a temporary locking device according to another embodiment of the present invention. 1...Lock body, 2...Rotor, 3...Screw shaft portion, 4a, 4b, 4c...Circular recess, 5, 6...
Locking plate, 7...Slot hole, 8...Compression coil spring,
9, 10... Square groove, 11, 12... Square groove, 13
a, 13b, 13c...Circular convex portion, 14...Key,
15... Raised portion, 16... Step groove, 17... Stop plate, 18... Nut, 19... Receiver, 20...
Door, 21...hole, 22...Natsuto.

Claims (1)

[Scope of utility model registration request] The rotor 2 is rotatably fitted into the lock body 1, and the retaining plate 13 is fixed to the rear end of the rotor 2.
A compression coil spring 8 is provided with a slot 7 that crosses in the diametrical direction, a pair of locking plates 5 and 6 are accommodated in the slot 7 so as to be movable in the radial direction, and the locking plates 5 and 6 are inserted between the two. The V-shaped square grooves 9 and 10, which are engaged by the tips of the chevron-shaped cross sections of the lock plates 5 and 6 when the stop plate 13 is in the locked position, are formed in the inner circumferential surface of the lock body 1. A plurality of circular recesses 4a, 4b, 4c having different diameters are provided at the front end of the rotor 2, with a small diameter circular recess eccentrically arranged on the bottom surface of a large diameter circular recess. 4b, 4c, a plurality of circular convex portions 13a, 1 with different diameters
3b and 13c are provided at the tip of the key 14, and the inner peripheral surface of each circular concave portion 4a, 4b, 4c and each circular convex portion 13
A temporary locking device in which the outer peripheral surfaces of a, 13b, and 13c are tapered.