JPH0752301Y2 - Cylinder lock - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder lock in which a rotating body and an inner cylinder can be exchanged. More specifically, when a key is lost, the cylinder lock is reproduced as a lock with another key code. The present invention relates to a cylinder lock in which only a rotating body and an inner cylinder are taken out by a key for exclusive use of replacement, instead of exchanging the whole, and can be replaced with a new one.

[0002]

2. Description of the Related Art Lockers for storing clothes and personal belongings at golf courses, pools, other sports clubs, PO boxes,
For cylinder locks used in safe deposit boxes, housing complexes, etc.
As a measure against the loss of a key, a spare key is often prepared to prepare for this. However, from the viewpoint of crime prevention, of course, the use of the spare key is not preferable, and therefore, there is a strong demand for replacing the lock when the key is lost.

Therefore, in order to replace the lock in response to such a demand, (a) the entire lock is replaced, (b) the inner cylinder is removed by the management key, and (c) the inner and outer cylinders are integrated. There are means such as removing the lock from the housing using a replacement master key.

[0004]

However, in the case of the above (a), it is difficult for an amateur to do the construction, and it is necessary to ask a specialist to ask, and it is uneconomical to replace the entire locking device. In addition, the replacement work is troublesome and time-consuming, so there is a problem that a quick response cannot be made. Further, the conventional locking device adopting the above methods (a) and (b) has a complicated structure and the price of the entire lock is high, and it is not possible to obtain a great advantage as compared with the means (a).

The present invention has been made in view of the above problems of the above-mentioned prior art, and makes it possible to easily remove and replace only the rotating body and the inner cylinder by using the replacement exclusive key. The purpose is to be structurally simple and inexpensive to manufacture.

[0006]

In order to achieve the above-mentioned object, the present invention comprises a rotating body, and an inner cylinder and an outer cylinder which are sequentially mounted on the rotating body so as to be rotatable and slidable in order. In a cylinder lock made by cutting a key slot in the axial direction of
At the rear end of the inner cylinder, a locking recess that is axially engageable with and disengages from a stopper provided on the inner surface of the peripheral wall of the outer cylinder and that locks in the circumferential direction is formed, and a locking plate is provided at the rear end. The cylindrical body provided with is inserted so as to be rotatable between the inner cylinder and the rear end portion of the rotating body, and the locking plate holds the stopper in the state of locking the stopper in the locking recess. A notch is formed on one side so that it can be locked and retained, and that locking can be released.The rotary body, the inner cylinder, and the outer cylinder are formed in a shape orthogonal to the inner part of the key slot. Each of the communication holes is made to communicate with each other, and the communication hole of the rotary body is urged by the spring to project into the key slot and pushed up by the tip of the lock exchange key to communicate with the cylindrical body. A sliding pin that can be inserted into the hole and that connects the cylindrical body so that it can rotate integrally with the rotating body during the insertion. It is intended to provide an inserted cylinder lock comprising.

[0007]

The stopper protruding from the inner surface of the inner wall of the outer cylinder is locked by the locking plate of the cylindrical body, and the stopper is locked in the locking recess of the inner cylinder. It is located inside and fixed in the circumferential and axial directions. At this time, if a key having a predetermined key code is inserted into the key slot of the rotating body and is rotated in a predetermined direction, unlocking and locking can be performed. At this time, the sliding pin inserted into the communication hole of the rotating body is pushed and urged into the key slot by the spring, so that the key is not inserted into the communication hole of the cylindrical body, Since the contact point between the end and the spring is located exactly on the boundary line between the communication holes of the rotating body and the cylindrical body, only the rotating body is rotated without rotating the cylindrical body by the key operation. .

When the lock user loses the key or when the key is stolen and the lock needs to be replaced, the key code is the same as the unlocking / locking key and longer than the key by a predetermined dimension. Insert the formed lock replacement key into the key slot of the rotating body. As a result, the pair of sliding pins projecting into the rear end of the key slot of the rotating body are pushed up against the biasing force of the spring by the replacement key, and the rear end of the sliding pin is cylindrical. It is inserted into the communication hole of, and the rotating body and the cylindrical body are connected to each other. Therefore, when the lock exchange key is rotated from the locked state by approximately 90 ° in the unlocking direction, the rotary body and the cylindrical body are rotated by the same angle in the same direction, and the lock plate is cut to one side of the locking plate of the cylindrical body. The notch that is provided corresponds to the stopper position of the outer cylinder, the stopper is disengaged from the locking plate, and the inner cylinder is completely free from the outer cylinder. By pulling the key toward you, the rotating body, the cylindrical body, and the inner cylinder can be integrally pulled out from the outer cylinder.

Then, a lock having another key code is attached. In this case, the replacement key of the other key code is inserted into the key slot of the rotating body and the inner cylinder is inserted into the outer cylinder. Then, if it is confirmed that the locking recess and the stopper are locked, the replacement key is reversed from the unlocked state to the locked position, whereby the rotating body and the cylindrical body are reversed in the same direction. The locking plate is locked by the stopper, and the stopper of the outer cylinder is locked and held in the locking recess of the inner cylinder. Therefore, when the lock exchange key is pulled out from the key slot in this state, the sliding pin is pushed into the key slot by the spring, and the rear end of the lock pin comes out of the communication hole of the cylindrical body, and the cylindrical body is completely removed from the rotating body. In the free state, the cylinder is fixed in the outer cylinder, whereby the lock exchange operation is completed.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, the door 1 is inserted into the mounting hole 1a penetrating the door 1 from the back side thereof, and the flange 2a at the rear end is fixed to the back surface of the door 1 with screws 3 or the like. An outer cylinder 2 fixed to the inner cylinder 4, an inner cylinder 4 inserted into the outer cylinder 2 so as to be freely inserted and removed from the front, and inserted in the inner cylinder 4 so as to be slidable in the front-rear direction and rotatable. The rotary body 6 has a rear end to which a cylinder cam 5 is fitted, and the rear end of the inner cylinder 4 is rotatably fitted to a cylindrical body 7.

The outer cylinder 2 is located near the rear end thereof,
A pin-shaped stopper 8 that penetrates the peripheral wall 2b and projects inward is fixedly provided. On the other hand, the inner cylinder 4 has a locking recess 9 for the stopper 8 on the outer periphery of the rear end thereof.
The rear end is opened so as to have a U-shape that is substantially horizontal in a plane, and the inner cylinder 4 is inserted into the outer cylinder 2 from the front so as to be locked with the stopper 8 and the inner cylinder 4 concerned. Is fixed in the circumferential direction. Further, in the inner cylinder 4, an annular recess 11 is formed concentrically on the front end side of an insertion hole 10 penetrating the axis of the inner cylinder 4, and a large diameter hole 12 is also formed concentrically on the rear end. I am doing it.

The rotating body 6 is formed in a horizontally long cylindrical shape and is rotatably inserted into the insertion hole 10 of the inner cylinder 4, and the outward flange 6'at the front end thereof is rotatably fitted in the annular recess 11. As a result, the backward escape is prevented. The rear end portion of the rotating body 6 is formed in a substantially oval cross section, a square shape, etc., and extends outward from the rear end of the insertion hole 10 so that the cylinder cam 5 can be detachably attached to this extension portion. Exterior. The cylinder cam 5 is inserted into a stepped hole 2c penetrating the center of the flange 2a of the outer cylinder 2, and the stepped hole 2c has an outward facing step portion 2d and the cylinder cam 5 has an inward facing step portion. The cylinder cam 5 is held at a predetermined position by being axially engaged with 5a.

The cylindrical body 7 is integrally formed at its rear end with an outwardly flanged locking plate 7a. The locking plate 7a is set to a size such that it can be rotated while being housed in the outer cylinder 2, and a stopper 8 of the outer cylinder 2 is attached to the locking plate 7a on one side around the locking plate 7a. A notch portion 7b for removing is cut. The cylindrical body 7 is rotatably inserted into the enlarged hole 12 of the inner cylinder 4 and is rotatably mounted on the rotary body 6, and its locking plate 7a is brought into contact with the rear end surface of the inner cylinder 4. The inner cylinder 4 with the locking plate 7a.
By closing the rear end opening of the locking recess 9 in FIG. 1, the stopper 8 is locked in the axial direction as shown in FIG. 1 (A), and the inner cylinder 4 is fixed in the outer cylinder 2. .

Further, the rotary body 6 has a key slot 6a bored in the upper axial direction, like a normal cylinder lock, and a plurality of pin holes 6b communicating with the key slot 6a in an orthogonal state. .. are perforated in a zigzag arrangement in two rows at predetermined intervals in the left and right sides in the axial direction.
A code pin 13 having a code groove (not shown) is inserted in each pin hole 6b while being constantly urged in the direction of the key slot 6a by a cover plate and a spring (not shown). Further, bar slots (not shown) which communicate with the pin holes 6b in a state orthogonal to the pin holes 6b are cut and formed in the upper and lower portions on the left and right sides of the rotating body 6, and side bars (not shown) move in the bar slots. It is freely interpolated.

When the side bar is locked, it protrudes from the rotary body 6 and engages with a recess (not shown) in the inner wall of the inner cylinder 4, but a key (not shown) is inserted into the key slot 6a and each cord has a recessed hole (not shown). When the pin 13 is pushed out to a predetermined position, the cord grooves (not shown) are aligned in a straight line, and the side bar (not shown) has its base end inserted into each cord groove and at the same time, its front end is pulled into the bar slot.
The engagement with the inner cylinder 4 is released, and as a result, the rotating body 6 becomes rotatable, and the key (not shown) can be unlocked by rotating it by 90 °.

Further, the two right and left side portions near the rear end of the rotating body 6, the cylindrical body 7, and the inner cylinder 4 are connected to each other through two communicating holes 1 which are orthogonal to the key slot 6a.
4, 14, 15, 15, 16, and 16 are provided so as to face each other on the same axis. Then, both communication holes 1 of the rotating body 6
Sliding pins 17 and 17 are slidably inserted into 4 and 14, and are supported by cover plates 18 and 18 fixed to the seats 4a and 4a of the inner cylinder body 7 and the inner cylinder 4. However, the sliding pins 1 are constantly operated by the springs 19 and 19.
7 and 17 are urged to project into the key slot 6a.

The two sliding pins 17, 17 are substantially tapered at their tips so that they can be pushed outward at the tips of a lock exchange key described later against the urging force of the springs 19, 19. The springs 19 and 19 are formed in a conical shape.
In the state in which each tip is abutted with each other and is abutted with each other, its length is set in advance so that its rear end surface is located on the same plane as the outer peripheral surface of the rotating body 6, as clearly shown in FIG. As a result, the rotating body 6 and the cylindrical body 7 are held in a "disconnected" state in which power is not transmitted to each other, and when a key for locking and unlocking (not shown) is used, only the rotating body 6 can rotate. There is no rotation of the body 7, and the sliding pin 1
When the sliding pins 17 and 17 are moved outward by pressing and moving the sliding pins 17 and 17, the rear ends of the sliding pins 17 and 17 are communicated with each other.
The rotary body 6 and the cylindrical body 7 are switched to the "continuous" state in which the rotary body 6 and the cylindrical body 7 move integrally. That is, the sliding pins 17, 17 and the communication hole 1
A clutch mechanism is constituted by 5 and 15.

When the lock exchange key 20 is inserted into the key slot 6a,
The length of the key slot 6a is set longer than that of a locking / unlocking key (not shown) so as to reach the inner part of the key slot 6a. Symmetrical slopes are provided so that they can be pushed and moved. Further, the lock exchange key 20 is formed in a flat plate shape and has the same recessed holes as those of a key (not shown) on both the front and back surfaces thereof, and the sliding pin 17 is provided on both the front and back surfaces of the tip end portion. Recessed holes are provided at positions corresponding to 17, respectively.

The cylindrical body 7 has a cutout 7b.
Is assembled with the stopper 8 at a position displaced by 90 ° in the circumferential direction, and the communication holes 15 and 15 and the communication hole 1 of the inner cylinder 4 when locking or unlocking with a key (not shown).
6 and 16 are held in a non-rotating state by being connected in the circumferential direction by springs 19 and 19 which are inserted.

In the cylinder lock configured as described above, when it becomes necessary to replace the lock due to the loss of a key (not shown), the lock for lock can be replaced as shown in FIGS. When the key 20 is inserted into the key slot 6a, the key 20
The sliding pins 17, 17 are pressed outward by the spring 19,
It moves against the urging force of 19, and the rear end portion is inserted as shown in FIG. 3, so that the rotating body 6 and the cylindrical body 7 are connected. As a result, when the lock exchange key 20 is rotated by approximately 90 ° in the direction of arrow a shown in FIG. 1B, the rotating body 6 and the cylindrical body 7 are rotated in the same direction by the same angle, and the cutout portion 7b is formed by the stopper 8a. Corresponding to the above, since the stopper 8 and the locking plate 7a are released from each other, if the lock exchange key 20 is pulled forward in this state, the inner cylinder 4, the rotating body 6, and the cylindrical body are locked by the key 20. 7 is pulled out from the outer cylinder 2 as shown in FIG.

[0021]

Since the present invention is constructed as described above, when the lock needs to be replaced due to loss of the key or the like, a lock exchange key longer than the lock and unlock keys can be used. After inserting it into the key slot and rotating it to the unlocked position, you can pull out the inner cylinder, rotating body, etc. just by pulling it out forward.For a new lock, insert the lock replacement key into the key slot and unlock it. Rotate to the position, align the notch of the cylinder with the locking recess of the inner cylinder, insert the outer cylinder in this state, lock the stopper in the locking recess, and then press the lock replacement key to the locked position. Since it can be attached simply by reversing and pulling out the key, even an amateur can deal with it easily and quickly. Further, since the sliding pin is always inserted and held in the communication hole of the rotating body by the biasing force of the spring, the cylindrical body and the rotating body are maintained in a completely free state, and as a result, at the time of locking and unlocking. The cylinder is never rotated, so
The inner cylinder will not come out. In addition, sliding pins and springs are code pins for pin tumbler type cylinder locks,
Since the spring can be diverted and each communication hole can be easily formed by the same means as the pin hole, the manufacturing cost is low,
Moreover, there are few failure factors.

[Brief description of drawings]

FIG. 1 shows an embodiment of a cylinder lock according to the present invention,
(A) is a longitudinal sectional view in a locked state, (B) is BB of (A)
FIG.

FIG. 2 is a cross-sectional view taken along the line CC of FIG.

FIG. 3 is a cross-sectional view in which a part of a state in which an inner cylinder, a rotating body, and a cylindrical body are pulled out to a midpoint of an outer cylinder is cut away in the embodiment.

[Explanation of symbols]

 2 Outer cylinder 2b Outer cylinder peripheral wall 4 Inner cylinder 6 Rotating body 6a Key slot 7 Cylindrical body 7a Locking plate 7b Cutout 8 Stopper 9 Locking recess 14 Communication hole 15 Communication hole 16 Communication hole 17 Sliding pin 20 For lock replacement Key

Claims (1)

[Scope of utility model registration request] 1. A cylinder lock comprising a rotating body, an inner cylinder and an outer cylinder which are sequentially mounted on the rotating body so as to be rotatable and slidable in order, and a key slot is cut in the axial direction of the rotating body.
At the rear end of the inner cylinder, a locking recess that is axially engageable with and disengages from a stopper provided on the inner surface of the peripheral wall of the outer cylinder and that locks in the circumferential direction is formed, and a locking plate is provided at the rear end. The cylindrical body provided with is inserted so as to be rotatable between the inner cylinder and the rear end portion of the rotating body, and the locking plate holds the stopper in the state of locking the stopper in the locking recess. A notch is formed on one side so that it can be locked and retained, and that locking can be released.The rotary body, the inner cylinder, and the outer cylinder are formed in a shape orthogonal to the inner part of the key slot. Each of the communication holes is made to communicate with each other, and the communication hole of the rotary body is urged by the spring to project into the key slot and pushed up by the tip of the lock exchange key to communicate with the cylindrical body. A sliding pin that can be inserted into the hole and that connects the cylindrical body so that it can rotate integrally with the rotating body during the insertion. Inserted into the cylinder lock comprising.