JPH0515007Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is useful for locking movable objects such as building doors and equipment storage box lids to fixed frames such as building side pillars and box bodies. The present invention relates to a lock device used in which a key inserted into a rotor is pushed in the axial direction of the main body and then rotated.

(Prior art) Conventional general locking devices that lock the rotor to the main body cylinder using a pin tumbler locking mechanism or a disc tumbler locking mechanism, etc., use a stopper to lock the door to the fixed frame. The gold is integral with the rotor and fixed to the shaft.

(Problems to be Solved by the Invention) However, in such a structure, when the tumbler lock mechanism is operated with a picking tool or the like to unlock the rotor from the main body cylinder, the shaft can be rotated immediately. Therefore, in the current situation where various picking tools exist and unlocking methods using them are known, locking devices incorporating only the conventional tumbler locking mechanism are vulnerable to unauthorized unlocking by malicious people. .

Therefore, the purpose of the present invention is to prevent unauthorized unlocking by simply unlocking the tumbler lock mechanism built into the front half of the main body with a picking tool, etc., since the rotational force cannot be transmitted from the rotor to the shaft. It is an object of the present invention to provide a locking device with extremely high safety against.

(Means for Solving the Problems) The push-and-turn type lock device of the present invention will be explained below using the reference numerals in the attached drawings. A main body 1 having a spherical receiving part 3 on its surface; a radial receiving groove 6 that is rotatably but immovably fitted in the main body 1 and opened in the shaft hole 5 faces the disk receiving part 2; A cylinder 4 is provided with a connecting receiving portion 7 provided in the rear end in the axial direction; the cylinder 4 is fitted into the shaft hole 5 so as to be rotatable and movable in the axial direction, and is connected to the cylinder 4 by a tumbler locking mechanism 9. A connecting ball 11 is provided on the front surface of the rear end flange 10 which is locked and is removable from the connection receiving section 7, and a recess 12 is provided on the outer peripheral surface of the rear end flange 10. A rotor 8 has a drive portion 13 provided in the axial direction on the rear surface; the rotor 8 is fitted to the rear end of the main body 1 so as to be rotatable but not movable in the axial direction; a shaft 14 provided with a radial through hole 16 facing the front end flange 15 and a passive part 17 that can be engaged and detached from the drive part 13 of the rotor 8 on the front surface of the front end flange part 15; cylinder 4
a locking disk 18 that is removably fitted into the receiving groove 6 and whose inner end is removably engaged with the recess 20 on the outer peripheral surface of the rotor 8; Spring 21 that slides and pushes outward
and; A sphere 22 that is fitted into the sphere receiving portion 3 of the main body 1 and the through hole 16 of the shaft 14 and is removable from the recess 12 of the rotor 8; A locking of the rotor 8 to the cylinder 4 by the tumbler locking mechanism 9; It is inserted into the keyhole 24 of the rotor 8 to release the lock, and by pushing the rotor 8 in the axial direction after the lock is released,
The receiving groove 6 of the cylinder 4 and the recess 2 of the rotor 8
0 in a non-facing position, while the key 2 places the through hole 16 of the shaft 14 and the recess 12 of the rotor 8 in a facing position.
It consists of 3.

(Embodiment) In the illustrated embodiment, a guard ring 30 is provided at the front end of the cylindrical body 1 and is rotatable with respect to the body 1.
are fitted, and the main body 1 is fixed to the door 34 by a mounting nut 33 screwed into the outer circumferential thread. A hardened steel guard plate 31 for preventing drill breakage is rotatably fitted between the front wall 1a of the main body 1 and the front end face of the cylindrical cylinder 4, and is prevented from coming off with an O-ring 41.

The front end flange 26 of the cylinder 4 contacts the front end cross section 27 of the main body 1, while the front end flange 15 of the shaft 14 contacts the rear end surface of the cylinder 4 and is fitted into the rear end corner shaft of the cylinder 4. Rotation angle regulating disk 3
5 is in contact with the rear end surface 28 of the main body 1, and the rotation angle regulating disk 35 is prevented from coming off by the fixing bolt 32 via the spacer and the stopper plate 25, so that the cylinder 4 and the shaft 14 are prevented from moving in the axial direction. movement is prevented.

The disk receiving portion 2 is formed on the inner circumferential surface of the front end of the main body 1 to have an arcuate cross section. The receiving groove 6 is provided in the front surface of the front end flange 26 of the cylinder 4 in the radial direction thereof,
A horizontally elongated spring accommodating portion 19 is recessed in the inner bottom surface so as to intersect with the receiving groove 6. The spring 21 is composed of a curved spring whose left and right ends are bent into circular shapes, and its central convex surface pushes against the rear protrusion 18c of the locking disc 18. The spherical receiving portion 3 is constituted by an axial groove having an arcuate cross section provided on the inner circumferential surface of the main body 1.
The sphere 22 is made of steel.

The connection receiving portion 7 on the cylinder 4 side is provided in the axial direction on the inner circumferential surface of the central shaft hole 5, and a shallow chamfered portion 29 is provided at the rear end edge of the shaft hole 5 continuous with the connection receiving portion 7. It is formed. The steel connecting ball 11 is accommodated and held in a recess 36 provided on the circumferential surface of the rotor 8 immediately in front of the rear end flange 10 . The driving part 13 on the rotor 8 side is composed of a protruding part with an oval-shaped cross section, and correspondingly, the passive part 17 on the shaft 14 side is composed of an oval-shaped recessed part.

A circular receiving hole 37 is provided in the center of the rear end surface of the rotor 8, almost penetrating through the drive portion 13 and the rear end flange 10, and the pressing cylinder 38 fitted into the receiving hole 37 is moved by a coil spring 39. The inner surface of the passive part 17 is pressed. Therefore, the rotor 8 is urged to slide toward the front side.

A pin tumbler locking mechanism is used as the tumbler locking mechanism 9, and a driving pin 9a accommodated in a pin receiving hole 9d in the radial direction of the cylinder 4 is slidably biased by a spring 9c and is inserted into a pin hole 9e on the rotor 8 side. The inserted driven pin 9b is pushed. When the key 23 is removed, the tip of the stepped driven pin 9b is in the keyhole 2.
It protrudes from the inner surface of 4.

A rotation angle regulating disc 35 and a stop plate 25 that engage and disengage with a stop protrusion 40 at the rear end of the main body 1 are non-rotatably fitted into the square shaft portion of the shaft 14 and fixed with a mounting nut 32.

Note that when a plurality of spheres 22 are provided, the locking force of the cylinder 4 to the main body 1 and the locking force of the shaft 14 to the main body 1 are further strengthened. Furthermore, any tumbler lock mechanism can be selected and used.

(Operation) When the regular key 23 is inserted into the keyhole 24 of the rotor 8 as shown in FIGS. 8 and 9, the rotor 8 is unlocked from the cylinder 4 by the pin tumbler locking mechanism 9. When the rotor 8 is pushed in by pressing the key 23 sufficiently deep until the rear end flange 10 of the rotor 8 comes into contact with the inner bottom surface of the front end flange 15 of the shaft 14, the connecting ball 11 moves into the cylinder as shown in FIG. By escaping from the connection receiving part 7 on the 4 side and reaching the chamfered part 29 on the rear end edge of the shaft hole 5, the connection between the cylinder 4 and the rotor 8 is released, while the connection between the cylinder 4 and the rotor 8 is released. The drive portion 13 engages with the passive portion 17 on the shaft 14 side, and the rotor 8 and the shaft 14 are connected.

At this time, the recess 20 of the rotor 8 is at a position where it does not face the receiving groove 6 on the cylinder 4 side, and the opening of the receiving groove 6 is closed by the outer peripheral surface of the rotor 8, as shown in FIG. On the other hand, as shown in FIG. 8, the recess 12 of the rear end flange 10 of the rotor 8
It has reached a position facing the through hole 16 of the front end flange 15 of.

Therefore, when a rotational force is applied to the key 23 while it is pushed in, the sphere 22 is pushed by the inner surface of the sphere receiver 3 and escapes from the sphere receiver 3, opening the through hole on the shaft 14 side as shown in FIG. 16, the shaft 14 is unlocked from the main body 1. On the other hand, as shown in FIG. 10, since the inner end of the locking disk 18 is in contact with the outer peripheral surface of the rotor 8,
The locking disk 18 is prevented from escaping from the disk receiving portion 2 and moving entirely into the receiving groove 6 on the cylinder 4 side, and the cylinder 4 is locked with respect to the main body 1. In addition, as described above, the sphere 22 is connected to the shaft 1.
Since the rotor 8 and the shaft 14 are engaged with both the through hole 16 on the 4 side and the recess 12 on the rotor 8 side, the rotor 8 and the shaft 14 are maintained in a connected state.

Thus, when the key 23 is turned 90 degrees in a predetermined direction, the rotor 8 and shaft 14 rotate integrally with respect to the main body 1 and cylinder 4 as shown in FIG. The door 34 is unlocked by separating from the money receiving part. At this time, as shown in FIG. 15, the connecting ball 11 held by the rotor 8 moves along the rear end chamfer 29 of the shaft hole 5 of the cylinder 4. Further, as shown in FIG. 16, the sphere 22 is connected to the through hole 16 on the shaft 14 side and the rotor 8.
When the shaft 1 is engaged with both of the side recesses 12,
It rotates with 4.

To close and lock the door 34 again, turn the key 23 held in the pushed-in state in the opposite direction, and then use the key 23 locked to the rotor 8 via the tumbler lock mechanism 9 to lock the rotor 34. 8 and slide it forward. The coil spring 39 biases this forward sliding motion.

During this pull-out operation, the sphere 22 is pushed by the inner surface of the receiving part 12 on the rotor 8 side.
engages with both the spherical receiving portion 3 and the through hole 16 of the main body 1, and locks the shaft 14 non-rotatably. Sphere 2
2 is in contact with the outer peripheral surface of the rear end flange 10 of the rotor 8, so that the sphere 22 is held at the shaft locking position. At the end of the drawing operation, the connecting ball 11 on the rotor 8 side and the connecting receiving part 7 on the cylinder 4 side engage again, so the rotor 8 is connected to the cylinder 4.

(Effect of the invention) In the push-and-turn type locking device of the invention, when the rotor 8 is locked to the cylinder 4 by the tumbler lock mechanism 9, the rotor 8 is locked by some means.
When the locking disc 18 is rotated, the outer end 18a of the locking disc 18 is pushed against the inner surface of the disc receiving part 2 of the main body 1, as shown in FIG.
As a result, the inner end 18b of the locking disk 18 enters the recess 20 on the rotor 8 side, so that the rotor 8 is connected to the cylinder 4 by the locking disk 18.

Here, since the cylinder 4 is immovable in the axial direction of the main body 1, no matter how the rotor 8 is operated, the recess 12 of the rotor 8 will not move into the through hole 1 of the shaft 14.
The rotor 8 moves backward so as to face the rotor 6 , and the driving part 13 on the rotor 8 side is connected to the passive part 17 of the shaft 14 .
The rotor 8 and the cylinder 4 simply rotate idly as one unit.

In addition, the tumbler locking mechanism 9 can be used with the picking tool 50.
Even if the locking of the rotor 8 to the cylinder 4 by the tumbler locking mechanism 9 can be released by operating the tumbler locking mechanism 9, the connecting ball 11 at the rear end of the rotor 8 will not engage with the connecting receiver 7 on the rear end surface of the cylinder 4. Because of this,
When a rotational force is applied to the rotor 8, the rotor 8 and the cylinder 4 rotate together, and the locking disk 18 pushed inward is pushed into the recess 20 of the rotor 8, as shown in FIG. The rotor 8 and the cylinder 4 will be connected by the locking disc 18.

That is, even if the rotor 8 is rotated without using the regular key 23, the rotor 8 will simply idle in the main body 1 together with the cylinder 4, and the rotor 8 will be moved in the axial direction, and the rotor 8 and the cylinder 4 will be separated. Since the rotor 8 cannot be connected to the shaft 14, the push-and-turn type lock device of the present invention has extremely high safety against unauthorized unlocking using a picking tool or the like.

Furthermore, since the present invention adopts the above-mentioned simplified shape and structure, each component can be manufactured and processed easily and easily, and the manufacturing and assembly cost of the entire lock device can be reduced.

Furthermore, in the present invention, the locking disk 18 that locks the rotor 8 against the cylinder 4 in a non-rotatable manner in the event of an unauthorized unlocking operation is formed in a flat plate shape, so that the rotational force for unauthorized unlocking is reduced. Disk receiving part 2 of main body 1
When a pressing force is applied to the locking disc 18 through the plate, the pressing force acts not in the thickness direction but in the width direction of the plate, and the locking disc 18 does not distort even with a considerably large pressing force. The push-and-turn type lock device of the present invention does not deform and has high resistance to forcible unauthorized unlocking due to forced rotation of the rotor 8.

[Brief explanation of the drawing]

FIG. 1 is a front view of a push-and-turn type lock device according to an embodiment of the present invention when the key is removed, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. B- in the diagram
4 is a sectional view taken along line C-C in FIG. 2, FIG. 5 is a sectional view taken along line D-D in FIG. 2, and FIG. 6 is a sectional view taken along line E in FIG. -E line sectional view,
FIG. 7 is a sectional view taken along the line FF in FIG. 2. FIG. 8 is a longitudinal cross-sectional view of the locking device when the key is inserted and the rotor is fully pushed in, FIG. 9 is a cross-sectional view taken along the line G--G in FIG. 8, and FIG. 11 is a sectional view taken along line I-I in FIG. 8, FIG. 12 is a sectional view taken along line J-J in FIG. 8, and FIG. 13 is a sectional view taken along line J-J in FIG. FIG. 8 is a sectional view taken along line K-K in FIG. 8;
Figure 14 is a sectional view at a position corresponding to Figure 10 when the key is rotated 90 degrees, and Figure 15 is a sectional view of the key rotated 90 degrees.
FIG. 16 is a cross-sectional view at a position corresponding to FIG. 11 when the key is rotated 90 degrees, and FIG. 16 is a cross-sectional view at a position corresponding to FIG. 12 when the pressed key is rotated 90 degrees. FIG. 17 is a sectional view at a position corresponding to FIG. 10 when the rotor is rotated with a picking tool or the like. DESCRIPTION OF SYMBOLS 1... Main body, 2... Disk receiving part, 3... Ball receiving part, 4... Cylinder, 5... Shaft hole, 6... Receiving groove, 7... Connection receiving part, 8... Rotor, 9... ... Tumbler lock mechanism, 9a... Drive pin, 9b... Driven pin, 9c... Pin biasing spring, 9d... Pin receiving hole, 9e... Pin hole, 10... Rear end flange, 11...
...Connection ball, 12... Recessed portion, 13... Drive section, 14
... Shaft, 15 ... Front end flange, 16 ... Through hole, 17 ... Passive part, 18 ... Locking disk, 2
0... hollow, 21... spring, 22... sphere, 23
...Key, 24 ...Keyhole, 25 ... Clasp plate, 29
... Chamfered portion, 30 ... Guard ring, 31 ... Guard plate, 34 ... Door.

Claims (1)

[Scope of utility model registration request] A main body 1 having a disk receiving portion 2 on the inner circumferential surface of the front end and a spherical receiving portion 3 on the inner circumferential surface of the rear end;
A radial receiving groove 6 opening into the shaft hole 5 is provided facing the disk receiving part 2, and a connecting receiving part 7 is provided in the rear end surface in the axial direction. The cylinder 4 is fitted into the shaft hole 5 rotatably and movably in the axial direction, is locked to the cylinder 4 by a tumbler locking mechanism 9, and the coupling receiving portion 7 is provided on the front surface of the rear end flange 10. Connecting ball 1 that can be connected and detached from
1, a recess 12 is provided on the outer peripheral surface of the rear end flange 10, and a rotor 8 is provided with a drive section 13 in the axial direction on the rear surface of the rear end flange 10; rotatable at the rear end of the main body 1; and is fitted so as not to be movable in the axial direction, and the front end flange 1
A radial through hole 16 facing the spherical receiving part 3 of the main body 1 is provided on the outer peripheral surface of the main body 1, and a passive part 1 that can be engaged and detached from the driving part 13 of the rotor 8 is provided on the front surface of the front end flange part 15.
a shaft 14 having a shaft 14 provided with a shaft 14; a spring 21 that is accommodated in the receiving groove 6 and urges the locking disk 18 to slide outward; and a spring 21 that is fitted into the spherical receiving portion 3 of the main body 1 and the through hole 16 of the shaft 14; and a sphere 22 that can be engaged and detached from the recess 12 of the rotor 8; inserted into the keyhole 24 of the rotor 8 to unlock the rotor 8 from the cylinder 4 by the tumbler lock mechanism 9, and release the lock. By later pushing the rotor 8 in the axial direction, the receiving groove 6 of the cylinder 4 and the recess 20 of the rotor 8 are placed in a non-facing position, while the through hole 16 of the shaft 14 and the recess 12 of the rotor 8 are placed in a facing position. A push-and-turn type lock device consisting of a key 23 placed in a position.