JP4682000B2 - Cylinder lock - Google Patents

Description

  The present invention relates to a cylinder lock in which, for example, replacement of a decorative cap on the front surface of a cylinder can be easily performed by easily replacing the cylinder.

Conventionally, in the cylinder lock, the structure of the cylinder that can be exchanged is, for example, a cylinder lock body is detachably configured in a housing fixed to a door or the like, and the cylinder is positioned on the back side of the door or the like. There is known one provided with a detaching operation part for detaching the lock body (see Patent Document 1). In addition, in a temporary or existing lock device fixed to the door, the current cylinder lock and other cylinder locks can be replaced with other cylinder locks by leaving the lock box and linkage mechanism as they are by using the mounting means to operate from the front side. Is known (see Patent Document 2).
Japanese Patent Laid-Open No. 05-044364 Japanese Patent Laid-Open No. 10-311170

  However, in a conventional cylinder lock, for example, a cylinder lock release operation portion is provided inside a door to which the cylinder lock is fixed. Therefore, in order to replace the cylinder lock, it is necessary to open the door once and operate the detachment operation portion, and it is not possible to perform cylinder replacement work from the front side of the door. In addition, when replacing with a cylinder lock of another company, the entire lock device needs to be replaced because it is a cylinder lock that is detachably attached to the lock box fixed in the door by means of an attachment operated from the front side. However, there is a need for an adapter to drive a linkage mechanism such as a dead bolt that protrudes by changing the cylinder. Furthermore, it takes time and effort to remove the thumb turn of the door and operate the mounting means. The cylinder lock according to the present invention has been proposed in order to solve such problems.

  The gist for solving the above-described problems of the cylinder lock according to the present invention is to achieve a purpose, a housing fixed to a door lock, an outer cylinder detachably mounted in the housing, and a rotation to the outer cylinder. An inner cylinder that is freely included, a decorative cap whose rear end is fixed to the outer cylinder and covers a part of the front side of the outer cylinder, and an outer peripheral surface of the housing that is fitted outside the door At the same time, the front end of the ring covers the outer peripheral surface of the decorative cap so that the fixing means for fixing the decorative cap and the outer cylinder cannot be operated from the outside, and the key ring of the inner cylinder is inserted into the key groove When the key is rotated in the unlocking direction and the tip of the key is pressed, the key is separated from the locking groove formed in the circumferential direction on the inner peripheral wall surface of the housing, and enters the outer cylinder radius to enter the outer cylinder and the outer cylinder. Tube and makeup cap As desorbed from, is that which is composed of a stopper means provided swingably in a radial direction to the outer cylinder.

The stopper means has a flat stopper on the rear side of the outer cylinder and is supported by the outer cylinder by a support pin so that the stopper can swing in the radial direction of the outer cylinder, and one end of the stopper approaches the inner cylinder. The end is protruded from the outer peripheral surface of the outer cylinder and is always urged by an elastic member so as to be locked in the locking groove of the housing, and one end of the stopper is in the unlocking direction of the key for removing the cylinder. Being positioned to abut against the key tip during rotation;
The decorative ring is fixed by being pressed to the door side by a part of a housing nut that is loosely fitted to the outside of the outer cylinder and fixed to the front end of the housing by a fixing means;
Is included.

  According to the cylinder lock of the present invention, when the detachable key is inserted into the inner cylinder and rotated in the unlocking direction, the stopper means is immersed in the outer cylinder radial direction, and the locking relationship with the locking groove of the housing is established. Canceled. Therefore, the inner cylinder, the outer cylinder, and the decorative cap attached to the outer cylinder are detached from the housing. Thereby, the cosmetic cap with scratches or the like can be replaced with a new cosmetic cap to obtain a cylinder lock similar to a new one. In addition, the inner cylinder and the outer cylinder can be diverted by rotating from other places of use in order. In this way, when the inner cylinder and the outer cylinder are used by being diverted multiple times at different locations, the product value can be prevented from being lowered by replacing with a new cosmetic cap.

By supporting the flat stopper so that it can swing in the radial direction of the outer cylinder, it can be easily detached from the housing, and there is no time-consuming work to disassemble the lock box. Can be desorbed.
Since the decorative ring is pressed against the door by the housing nut and fixed, it is impossible to remove it from the outside, and it can be removed after the outer cylinder or the like is detached from the housing with the key.

  As shown in FIG. 1, a cylinder lock 1 according to the present invention includes a housing 3 that is fixed to a lock of a door 2, an outer cylinder 4 that is detachably mounted in the housing 3, and a rotating mechanism that is freely rotatable on the outer cylinder 4. The inner cylinder 5 included therein, the cosmetic cap 6 in which the rear end portion 6a is fixed to the outer cylinder 4 and covers a part of the front side of the outer cylinder 4, and the housing 3 outside the door 2 And the ring front end 8a covers the outer peripheral surface of the decorative cap 6 so that the fixing means 7 for fixing the decorative cap 6 and the outer cylinder 4 cannot be operated from the outside. A locking groove formed in the circumferential direction on the inner peripheral wall surface of the housing 3 by rotating the ring 8 and the key 9 inserted into the key groove 5a of the inner cylinder 5 in the unlocking direction and pressing the key tip 9a. 3a, the inner cylinder 5, The outer cylinder 4 and the decorative cap 6 are constituted by stopper means 10 provided on the outer cylinder 4 so as to be swingable in the radial direction so that the outer cylinder 4 and the decorative cap 6 are detached from the housing 3.

  As shown in FIG. 2, the stopper means 10 is disposed on the rear side of the outer cylinder 4. This is to prevent the tip of the normal key from acting on the stopper means 10 even when a normal key is inserted. The key acting on the stopper means 10 is a detachable key and is usually longer than the length of the key.

  As an example, as shown in FIG. 2, the stopper means 10 is configured such that a flat stopper 10a is swingable in the outer cylinder radial direction and supported by the outer cylinder 4 by a support pin 11. is there. Details of the shape of the stopper 10a are shown in FIG.

  As shown in FIG. 3, the stopper 10 a has one end 10 c approaching the inner cylinder 5 and the other end 10 b protruding from the outer peripheral surface of the outer cylinder 4 so as to be locked in the locking groove 3 a of the housing 3. In addition, the elastic member 12 and the push pin 13 are always urged. One end portion 10c of the stopper 10a is positioned so as to contact the key tip portion 9a when the key 9 for removing the cylinder is rotated in the unlocking direction.

  As shown in FIGS. 4 (A) and 4 (B), the outer cylinder 4 has an overall cylindrical shape, and has a space 4a for storing the inner cylinder 5 at the center, and a half moon in which the stopper 10a is inserted at the rear. A slit 4b is provided, and a support hole 4c for press-fitting the support pin 11 is provided.

  Further, a storage hole 4d for inserting the elastic member 12 and the push pin 13 is provided. A concave portion 4e is provided in the upper portion of the outer cylinder 4 along the front-rear direction, and a hole 4f for inserting a click ball 18 (see FIG. 1B) and a leaf spring 19 for holding the ball 18 (the same figure). 1 (see FIG. 1 (B)) is provided.

  A cosmetic cap 6 is inserted and crowned at the front end of the outer cylinder 4. As shown in FIG. 5, the makeup cap 6 has a ring shape with a required width as a whole, and is provided with a through hole 6 b for an inner cylinder in the front and a through hole 6 c in communication with the rear. The outer portion of the outer cylinder 4 is inserted into the through hole 6c. Furthermore, a screw hole 6d for fixing the attachment and a rotation stop hole 6e are provided in the radial direction.

  As shown in FIG. 1, the decorative ring 8 is loosely fitted on the outer side of the outer cylinder 4 and is fixed to a front end portion of the housing 3 by a fixing means, for example, a part of a housing nut 14 fixed by a naked attachment method. It is pressed against the door 2 side and fixed. The decorative ring 8 is a trapezoidal ring with a large through hole in the center, and is attached to the outer surface of the door 2 with a door thickness adjusting ring 15 interposed.

  The housing nut 14 is to be barely attached to the front end of the housing 3 which is inserted into the mounting hole 2a of the door 2 from the inside to the outside and protrudes to the outside, with the decorative ring 8 interposed therebetween. . Thereby, the decorative ring 8 is fixed to the door 2.

  The shape of the housing nut 14 is as shown in FIG. The screw portion 14 a is to be engaged with the screw portion of the inner peripheral wall surface of the front end portion of the housing 3. The outer through-hole 4 is inserted through the central through-hole 14b. The flange portion 14c presses the decorative ring 8 against the door 2 side. In order for the housing nut 14 to press the inner step portion of the decorative ring 8 against the door 2 side, a door thickness adjusting collar 16 and a turn washer 17 are interposed.

  As shown in FIGS. 1 (B) and 7 (A) to (D), the housing 3 is a cylindrical body as a whole, and a locking portion 3b protruding vertically is provided behind the housing 3, and the front end A screw portion 3c to which the housing nut 14 is barely attached is provided on the inner wall surface of the portion. In addition, a groove portion 3d is provided in the upper portion for locking and positioning the inner protrusion of the non-turn washer 17.

  Thus, the cylinder lock 1 according to the present invention is formed, and in order to attach this to the door 2, the housing 3 is inserted into the attachment hole 2a, and the door thickness is projected from the front end of the housing 3 protruding outward. The adjustment ring 15 and the makeup ring 8 are inserted.

  A rotation washer 17 and a door thickness adjusting collar 16 are sequentially inserted into the outer periphery of the housing 3 inside the decorative ring 8, and a housing nut 14 is barely attached to the front end of the housing 3 and tightened. Thereby, the decorative ring 8 is pressed and fixed toward the door 2.

  Next, a decorative cap 6 is put on the assembly of the inner cylinder 5 and the outer cylinder 4 and fixed with a screw screw 7 as a fixing means. At this time, a part of the end portion 10 b of the stopper 10 a in the stopper means 10 is urged outward by the elastic member 12 and the push pin 13 and protrudes outward from the outer peripheral surface of the outer cylinder 4.

  A cylinder detaching key 9 is inserted into the key groove 5a of the inner cylinder 5 and rotated in the unlocking direction. Then, the tip end portion 9a of the key 9 abuts against one end portion 10c of the stopper 10a, and pushes in such a manner as to rotate clockwise around the support pin 11 against the urging force of the elastic member 12. The other end portion 10 b is immersed inside the outer cylinder 4 in the radial direction. In this state, the inner cylinder 5, the outer cylinder 4, and the decorative cap 6 are inserted into the housing 3.

  When the outer cylinder 4 is fully inserted, the key 9 is returned to the locking direction. A part of the other end portion 10 b of the stopper 10 a protrudes outward from the outer peripheral surface of the outer cylinder 4 again by the urging force of the elastic member 12 and the push pin 13, enters the locking groove 3 a of the housing 3 and is locked. . In this way, the movement of the outer cylinder 4 in the front-rear direction is prevented and the outer cylinder 4 is retained.

  Further, the front end 8a of the decorative ring 8 covers and conceals the side wall surface of the inheritance cap 6, and the fixing screw screw 7 is concealed. Thus, when the key 9 is removed from the keyway 5a, the outer cylinder 4 and the inner cylinder 5 cannot be pulled out, and the decorative cap 6 cannot be removed.

  Next, when the outer cylinder 4 and the inner cylinder 5 need to be exchanged, for example, the outer cylinder used in another area is used by exchanging the key for the required number of times. In this case, or when the cosmetic cap 6 is markedly damaged and needs to be replaced, the cylinder detaching key 9 is inserted into the inner cylinder 5 and rotated in the unlocking direction. Then, the stopper 10a is rotated to release the locking action on the locking groove 3a. The inner cylinder 5, the outer cylinder 4, and the cosmetic cap 6 are pulled out as they are.

  The detached outer cylinder 4 and inner cylinder 5 are replaced with new ones, the outer cylinder 4 and the inner cylinder 5 used in other areas are recycled, or the decorative cap 6 is replaced with a new one. Then, the outer cylinder 4, the inner cylinder 5, and the decorative cap 6 with the key 9 inserted therein are inserted into the cylinder 3 and the key 9 is removed. This completes the replacement work easily. Even when the outer cylinder and the inner cylinder are recycled, the cylinder lock 1 becomes the same as a new one by replacing the decorative cap 6 with a new one.

It is the front view (A), side sectional view (B), and rear view (C) of the cylinder lock 1 according to the present invention. It is a longitudinal cross-sectional view which shows the stopper means 10 in the cylinder lock 1. It is the front view (A) and side view (B) of the stopper 10a in the stopper means 10. FIG. It is the longitudinal cross-sectional view (A) of the outer cylinder 4, and sectional drawing (B) along the AA line. It is the front view (A), longitudinal cross-sectional view (B), and back view (C) of the cosmetic cap 6 in the cylinder lock 1. FIG. 3 is a front view (A), a longitudinal sectional view (B), a side view (C), and a rear view (D) of the housing nut 14 in the cylinder lock 1. FIG. 4 is a plan view (A), a longitudinal sectional view (B), a front view (C), and a side view (D) of the housing 3 in the cylinder lock 1.

Explanation of symbols

1 cylinder lock,
2 doors,
3 Housing, 3a Locking groove,
3b locking part, 3c screw part,
3d groove,
4 outer cylinder, 4a space,
4b slit, 4c support hole,
4d storage hole, 4e recess,
4f hole, 4g hole,
5 inner cylinder,
6 makeup cap, 6a rear end,
6b through-hole, 6c through-hole,
6d screw hole, 6e rotation stop hole,
7 Skew screw,
8 Cosmetic ring, 8a Front end,
9 Cylinder removal key, 9a Tip,
10 stopper means, 10a stopper,
10b the other end, 10c one end,
11 Support pin,
12 elastic members,
13 Push pin,
14 Housing nut, 14a Screw part,
14b through hole, 14c flange part,
15 Door thickness adjustment ring,
16 Door thickness adjustment collar,
17 stop washer,
18 balls,
19 Leaf spring.

Claims (3)

A housing fixed to the door lock;
An outer cylinder detachably mounted in the housing;
An inner cylinder that is rotatably included in the outer cylinder;
A makeup cap whose rear end is fixed to the outer cylinder and covers a part of the front side of the outer cylinder;
The front end of the ring covers the outer peripheral surface of the decorative cap so that the fixing means for mounting and fixing the decorative cap and the outer cylinder cannot be operated from the outside while being fitted to the outer peripheral surface of the housing outside the door. And a makeup ring to
When the key inserted into the key groove of the inner cylinder is rotated in the unlocking direction and the key tip is pressed, the key is separated from the locking groove carved in the circumferential direction on the inner peripheral wall surface of the housing and within the outer cylinder radius. Stopper means provided on the outer cylinder so as to be swingable in the radial direction so that the inner cylinder, the outer cylinder and the decorative cap are removed from the housing by being immersed.
Cylinder lock characterized by. The stopper means is configured such that, on the rear side of the outer cylinder, a flat stopper is swingable in the outer cylinder radial direction and supported by the outer cylinder by a support pin, and one end of the stopper approaches the inner cylinder and the other end It is always urged by an elastic member so that the part protrudes from the outer peripheral surface of the outer cylinder and is locked in the locking groove of the housing, and one end of the stopper rotates in the unlocking direction of the key for removing the cylinder Is positioned so as to contact the tip of the key at the time of
The cylinder lock according to claim 1. The decorative ring is loosely fitted to the outside of the outer cylinder and fixed to the front end portion of the housing by a fixing means and pressed against the door side by a housing nut that partially contacts the inner wall step portion of the decorative ring. That
The cylinder lock according to claim 1 or 2, wherein

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