JPS6033956B2 - cylinder lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a silisodar lock that is small and robust, safe even if the key is lost, and whose unlocking mechanism can be easily changed.

(Prior art) Recently, cylinder locks have become widely used in game machines, etc. due to their small size and robustness, but the conventional locks have various drawbacks because the unlocking mechanism of the mirror body is fixed. was there.

For example, if locks that can be locked with a single key are installed in many machines, all the locks will become unprotected if that key is lost, and if each lock can only be locked with a different key, it will be safer, but it will cost more to manufacture. There are disadvantages in that the cost is high, and in places where a large number of locks are installed, the management and handling of keys becomes very complicated. It has also been proposed to disassemble the lock so that the locking mechanism can be changed, but it is actually not easy to disassemble a lock that is fixedly installed on a machine or the like. (Objective of the Invention) This invention was made against the above technical background, and it provides a lock and a key with the same structure, which allows the unlocking mechanism to be changed in many ways, and which also allows the lock to be disassembled. To provide a cylinder lock in which the unlocking mechanism of the coin itself can be changed by adjusting or replacing only the key without any trouble.

(Structure of the Invention) The present invention includes an outer cylinder attached to a door to be locked,
It is rotatably inserted into this outer cylinder, and its tip constitutes a key guide part, and it is compressed so that it can move in the wisterial direction with respect to the central shaft with a key claw attached to its rear end. The locking pin has a locking pin supported by a spring and held on a central shaft so as not to move in the circumferential direction, and a plurality of operating pieces arranged on the outer periphery of the locking pin in the circumferential direction and in all axial directions. A plurality of actuating pieces are arranged in all directions around the circumference and each has a protrusion protruding outward from the outer circumferential surface of the central shaft, and the actuating piece rotates around a shaft arranged in the outer cylinder at the center of each actuating piece. The inner periphery has a larger curvature than the locus of movement of the protrusion of the locking pin so that only one end thereof protrudes into the locus of movement of the protrusion of the locking pin. A surface is formed, and when the protrusion of the locking pin rotates from the center side of the actuating piece to the end side, the protruding end of the actuating piece is pushed outward, and the actuating piece rotates. At the same time, the other end protrudes into the locus of movement of the protrusion of the locking pin, and when the protrusion of the locking pin rotates from the end side of the actuating piece to the center side, the protruding end touches and prevents movement. It is configured to do so.

(Example) In Figures 1 and 2, 1 is an outer cylinder fixed to the door 1, 2 is a rear shaft, and 3 is an intermediate shaft.
3 constitutes the central axis.

The notch 13 at the front end of the outer cylinder 1 determines the rotational position of the key when the key is inserted into the lock, as will be described later. A key pawl (not shown) is attached to the rear threaded portion 21 of the rear shaft 2, and a recess 22 is formed at the front end, into which the protrusion 31 of the intermediate shaft 3 is fitted with iron so that rotational force can be transmitted. I have to. As shown in FIG. 6, this intermediate shaft 3 has a cylindrical portion 33 with grooves 34 formed at four locations in the circumferential direction into which locking pins are inserted, a recess 32 on the inside of the rear part, and a protrusion 3 on the rear end.
1 is provided. A front shaft 36 serving as a key guide is inserted into the cylindrical portion 33 with its tip inserted into the recess 32, and is configured to rotate together with the intermediate shaft 3. 37 is a notch, which allows the front shaft 36
The position in the rotational direction can be known from the outside in relation to the notch 13.

The locking pins 5 are supported by compression springs 5 and are inserted into the grooves 34 so as to be movable only in the axial direction, and have protrusions 51, 52, 53, 54 (third
(see Figs. 5 to 5) are exposed to the actuating piece arranged around the locking pin 5.

An intermediate cylinder 11 is provided on the outer periphery of the rear shaft 2, which is attached to the inside of the outer cylinder 1 by an appropriate means, thereby rotatably holding the rear shaft 2, and a shaft 60 is mounted on the front end thereof in the circumferential direction. Attach 4 pieces, to which donut-shaped support plate 4 and actuating pieces 61, 6.
2, 63, 64, and 65 are passed through alternately, and a presser plate 66 is attached to the end. Therefore, the shaft 60 is attached to the outer cylinder 1 via the intermediate cylinder 11. Actuation piece 6
1, 62, 63, 64, and 65 are each divided into four parts in the circumferential direction, all of which are rotatably mounted around the shaft 60, and are latched to a stopper 41 provided on the support plate 4. ing. As the actuating pieces rotate, one of the inner surfaces protrudes from the inner surface of the support plate 4 and comes into contact with the protrusions 51, 52, 53, and 54 of the locking pin 5. Four actuating pieces are arranged in the circumferential direction and are stacked in five stages in the direction of the lock, and each protrusion of the locking pin engages with the actuating piece of one of the stages depending on the amount of push of the locking pin. Become. As shown in FIGS. 7 to 9, the key body consists of an operating pin 7, a grip part 70, a shaft part 8, and an outer cylinder 9. The operating pins 7 are held between them, and the grips 70 are attached to these, so that they are connected to each other.

The shaft portion 8 has a step portion 83 formed between a cylindrical base portion 82 and a cylindrical portion 81 at the tip, a groove 84 for the actuating pin 7 on the outer periphery of the cylindrical portion 81, and a notch portion 85 in a portion. The base 82 is provided with a head 86 and a slit 8 is formed therein.
7 and a hole 88 perpendicular thereto. Outer cylinder 9
A through hole 91 in the axial direction is formed so that the diameter becomes larger at the rear, and a notch 92 is formed at the front end. In addition, the slit 8 is formed in a part of the base 72 of the grip part 7.
Hole 7 corresponding to protrusion 73 and hole 88 inserted into hole 7
4, and one side is extended to form an extension part 75 and a copper part 76. The operating pin 7 has a protrusion 71 at the rear end of the rod-shaped body that matches the step 83, and by engaging the protrusion 71 with any position of the step 83 and ironing it into the groove 84. Set the position of the tip in the direction of the hoe.

In this embodiment, since the actuating pieces 61, 62, 63, 64, 65 are provided in five stages, the stepped portion 83 is also provided in five stages correspondingly, and the amount of protrusion of the tip of the actuating pin 7 can be changed in five stages. We are making it possible to do so. The amount of protrusion of the tip of the actuating pin 7 can also be adjusted by changing the length of the actuating pin 7. To assemble the key, the operating piston 7 is inserted into each groove 84 of the shaft portion 8, and then inserted into the outer cylinder 9 with iron, the spring 93 is attached, and the grip portion 70 is inserted.
This is accomplished by inserting the protruding portion 73 into the slit 87 with iron, the extension portion 75 into the notches 85 and 92, and fixing it with the fixing pin 94.

The amount of depression of the actuating pin 7 from the distal end surface of the cylindrical portion 81 is set according to the set pushing amount of each locking pin 5 so as to provide a predetermined locking mechanism. Next, the operation of this device will be explained.

The key body is pushed into the lock body so that its cylindrical part 81 is flush with the front shaft 36 and the fishing part 76 is passed through the notch 13. Since the key is pushed in only when the hook portion 76 passes through the notch 13, the relative positions of the key and the lock in the rotational direction are determined by the copper portion 76 and the notch 13. Each of the key grooves 84 faces the locking pin 5, so that when the key is pushed in, the locking pin 5 moves to the operating pin 7.
The actuating pieces 61, 62, 63,
The protrusions 51, 52, 53, and 54 correspond to either of the protrusions 64 and 65, respectively. The locking pin 5 can be made to correspond to any one of the actuating pieces 61 to 65 depending on the axially set positions of the actuating pin 7. In addition, in this embodiment, four actuation pins 7 of the key body are used, and these correspond to four locking pins, so the corresponding actuation pieces are also four.
(4 stages), and in this embodiment, the actuating pieces 61 and 62
, 63, and 64 are made to correspond.

That is, although the actuating piece 65 is not used in this embodiment, it is also possible to make any of the locking pins 5 correspond to the actuating piece 65 by adjusting the actuating pin 7, and the effect is the same in that case as well. be. In the above state, as shown in FIG. 3, each protrusion is located between each actuating piece in the circumferential direction.

Each operating piece is rotated clockwise around the shaft 60, and is prevented from further clockwise rotation by a stopper 41, and can only rotate in the opposite direction. That is, each operating piece 61a, 61b, 61c, 61d
is in a state rotated clockwise from the state shown by phantom lines (62a, 64c) in FIG. Further, FIG. 3 shows the unlocked state, and the protrusions of the locking pin 5 are, for example, protrusions 51 and 53.
correspond to the actuating pieces 61b and 61d, the protrusion 52 corresponds to the second actuating piece 62a, and the protrusion 54 corresponds to the fourth protrusion 64c.

In FIG. 3, the first stage actuating pieces 61a, 61b, 61c, 6
Although only 1d is shown, the second to fourth actuating pieces 62a,
62b, 62c, 62d, 63a-63d, 64a-6
4d are arranged in the same way as the actuating pieces 61a to 61d, in other words, the actuating pieces 62a, 63a, 64a are below the actuating piece 61a in FIG. 3, and the actuating piece 64a is below the actuating piece 61b. 62b to 64b are located below the operating piece 61c, operating pieces 62c to 64c are located below the operating piece 61c, and operating pieces 62d to 62d are located below the operating piece 61d. overlaps with

Therefore, the protrusions 51 to 54 can be rotated in the clockwise direction at positions corresponding to any of the actuating pieces 61 to 64, but the protrusions 51 to 54 can be rotated in the counterclockwise direction at positions corresponding to any of the actuating pieces 61 to 64.
It is blocked by any one of the ends of 62d, 63a to 63d, and 64a to 64d and cannot rotate.
When the key is pushed into the lock, each locking pin 5 enters the key groove 84, and therefore the rotational force of the key body is transmitted to the central shaft (intermediate shaft 3 and rear shaft 2) by each locking pin 5. It has become so.

Therefore, when the key body is rotated clockwise from the state shown in FIG.
The actuating pieces 61b and 61d are rotated counterclockwise around the shaft 60 by pressing their inner peripheral surfaces, and the protrusions 52 and 54 are respectively rotating the actuating pieces 62a and 64c counterclockwise. make it move. Further, when the key is rotated, the intermediate shaft 3 and the rear shaft 2 are also rotated together with the locking pin, and a key pawl (not shown) attached to the rear end portion 21 is rotated, thereby locking the door 10. The locked state is as shown in FIGS. 4 and 5, and in this state, the operating pieces 61b, 61d, 62a, 64
Only the actuating pieces c are rotated counterclockwise and locked by the stoppers 41, and all the other actuating pieces are rotated clockwise.

Therefore, when the key is removed from the lock in this state, each locking pin returns to its original position by the force of the compression spring 50, and the protrusions 51, 52, 53,
54 are operating pieces 61a, 61b, 61 as shown in FIG.
c, 61d. In this state, even if you try to rotate the center shaft from the outside (for example, insert a screwdriver etc. from the front opening of the outer cylinder 1, hook the locking pin 5, and rotate it) ), if you try to turn it clockwise, the protrusions 52 and 54
hits the ends of the actuating pieces 61b, 61d, and if an attempt is made to rotate it counterclockwise, it hits the actuating pieces 61a, 61c, preventing rotation, and therefore the lock cannot be unlocked. Furthermore, even if the locking pin 5 is pushed in appropriately using a key whose protrusion amount of the actuation pin 7 is adjusted arbitrarily, one of the protrusions will hit the actuation piece and prevent the rotation. The mirror can only be opened with the key to the arrangement of the operating pins used.

That is, when the above-mentioned key is inserted into the lock in the state shown in FIG. 4, the protrusions 51 and 53 of the locking pin 5 are located at the top level, the protrusion 52 is located at the second level, and the protrusion 54 is located at the fourth level. Then, when the key is turned counterclockwise, the protrusions 51 and 53
By pressing the inner peripheral surfaces of the actuating pieces 61b and 61d, they are rotated clockwise, and the protrusions 52 and 54 are rotated clockwise.
By pressing the inner peripheral surfaces of the operating pieces 62a and 64c, they are rotated clockwise, and at the same time, the central shaft is also rotated simultaneously with the key to remove the key pawl and lock the door 10. Also, if a key other than the one used for locking the lock is used, the protrusions 51 to 5
4 hits the protruding end of one of the actuating pieces, and counterclockwise rotation is prevented.

To open the mirror, it is necessary to rotate the center axis counterclockwise, but all of the operating pieces 61a to 61d except for the operating pieces 61b, 61d, 62a, and 62c that were moved when locking are in the third position. As shown in the figure, the protrusions 51~
54 is arranged to prevent rotational movement in the counterclockwise direction. Therefore, in order to rotate the central shaft counterclockwise for unlocking, the protrusion 51 is connected to the actuating piece 61b, and the protrusion 5
2 must correspond to the actuating piece 62a, the protrusion 53 to the actuating piece 61d, and the protrusion 54 to the actuating piece 64c (see FIG. 4). For example, when the locking pin 5 is pushed in so that all the protrusions are located at the second stage, when the key is rotated counterclockwise to lock the protrusion, the protrusion 52 is rotated by the actuating piece 62a. However, the protrusions 51, 53, 54 are not blocked by the actuating piece 62b in the arrangement shown in FIG.
, 62c, 62d prevent rotational movement;
The key as a whole cannot be rotated. Note that the key custodian must record the location of the key's operating pin.

This is because if the key is lost or stolen, the lock becomes defenseless, so it is necessary to change the unlocking mechanism of the lock. In this case, with the lock having the above structure, this can be easily done by adjusting the key without disassembling the lock.
That is, by first unlocking the lock using the key in the arrangement of the actuating pins, the arrangement of the actuating pieces is returned to the state shown in FIG. 3;
Next, rearrange the key's operating pin. This operating pin 7
To rearrange the position, as shown in FIG. 7, the outer cylinder 9 is moved to the left against the force of the spring 93 so that its distal end surface is positioned to the left of the shoulder 77 of the grip part 70. As a result, the outer cylinder 9 becomes rotatable, so the notch portion 92 is sequentially rotated so that it is positioned above each actuating pin 7, and the portion of the actuating pin 7 facing the notch portion 92 is engaged with the stepped portion 83. is removed to sequentially change the engagement position with respect to the stepped portion 83. In this way, for example, the protrusions 52 and 54 correspond to the actuating pieces 61a and 61c on the uppermost stage, and the protrusions 51 and 53 correspond to the actuating pieces 62b and 64d on the second and fourth stages. Place it. Then, using that key, insert it into the unlocked lock shown in FIG.
1c and 61d are rotated in the opposite direction to the arrangement shown in FIG. 4, and 62a and 64c are replaced by 62.
b and 64d are rotated counterclockwise from the state shown in FIG. 3. Therefore, the iron locked in this state is
It can only be locked with this key, and cannot be unlocked with the lost or stolen key. In the above embodiment, the number of actuating pieces is 4 in the circumferential direction and 5 stages in the axial direction, so 20 actuating pieces are used, but there is no particular limit to this number, and the number of actuating pieces is not particularly limited. The direction can be changed freely.

(Effects of the Invention) As explained above, the present invention allows various locking mechanisms to be selected using a single coin body and key body, and changing the unlocking mechanism requires disassembling the lock body. Since the adjustment can be made by simply adjusting the key without having to worry about it, it is very convenient even when the key is lost, and can be suitably applied to various things such as game machines, safes, archives, and lockers.

[Brief explanation of the drawing]

Fig. 1 is a central vertical sectional view of a mirror body showing an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a front view of the actuating piece in the locked state, and Fig. 4 is a front view of the actuating piece in the locked state. , FIG. 5 is a partial perspective view of the actuating piece, FIG. 6 is a perspective view of the intermediate shaft, FIG. 7 is a vertical sectional view of the key body, FIG.
The figure is an exploded perspective view. 1... Outer cylinder, 2... Rear shaft, 3... Intermediate shaft, 4...
... Support plate, 5... Locking pin, 7... Operating pin, 5
1-54...Protrusion, 61a-61d, 62a-62d
, 63a to 63d, 64a to 64d... actuation pieces. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1 An outer cylinder to be attached to a door etc. to be locked, a central shaft that is rotatably inserted into this outer cylinder and whose tip constitutes a key guide, and a central shaft with a key pawl attached to its rear end; A locking pin supported by a compression spring so as to be movable in the axial direction with respect to the central shaft and held on the central shaft so as not to move in the circumferential direction, and a plurality of locking pins arranged circumferentially and axially around the outer circumference of this locking pin. A plurality of the locking pins are arranged circumferentially and each has a protrusion protruding outward from the outer peripheral surface of the central shaft, and each of the locking pins has a projection that extends outward from the outer circumferential surface of the central shaft, and each of the locking pins is arranged at the center of the outer cylinder. The locking pin is supported so as to be rotatable around a shaft disposed inside the locking pin, and its rotation is restricted by a stopper, and the locking pin is configured such that only one end thereof protrudes within the locus of movement of the protrusion of the locking pin. An inner circumferential surface with a larger curvature than the locus of movement of the protrusion is formed, and the protrusion of the locking pin rotates from the center side to the end side of the actuating piece, so that the protruding end of the actuating piece is exposed. When the locking pin protrusion rotates from the end side of the actuation piece to the center side, the other end protrudes into the locus of movement of the locking pin protrusion as the actuating piece rotates as it is pushed in the opposite direction. A cylinder lock characterized in that a protruding end portion abuts against the cylinder lock to prevent movement.