JP2009228227A - Cylinder lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder lock, giving a sense of a click even in the case of using only a tumbler for a key distinction structure. <P>SOLUTION: This cylinder lock includes a suitable number of tumblers, which moves a rotary boundary 3 between a plug 1 and a cylinder case 2 rotatably holding the plug 1 to a border to open and close the rotary boundary 3, and are energized to the rotary boundary 3 closed position by a compression spring 4, and driven to the rotary boundary 3 opened position by insertion of an authentic unlocking key 5. The suitable number of tumblers 6 are mounted with one end projecting into the rotary boundary 3 to be retreated to the rotary boundary 3 opened position by turning operation to the plug 1 in the insertion state of the authentic unlocking key 5, whereby resisting force is applied to the turning operation from the initial rotational position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cylinder lock.

  A cylinder lock described in Patent Document 1 is known as a cylinder lock that uses a tumbler attached to a plug to obtain a click feeling associated with the return operation of the cylinder lock to the initial rotation position. In this conventional example, a stopper tumbler is attached to the end of the plug of the cylinder lock while being urged in the protruding direction, and the stopper is prevented from being detached from the cylinder case by locking the stopper tumbler to the cylinder case. .

The stopper tumbler has a locking cam at the leading edge of the protruding side, and a fitting portion that locks the locking cam when the plug is in the initial rotation position is formed on the inner peripheral wall of the cylinder case. When the plug is returned from the non-initial rotation position to the initial rotation position, the locking cam is elastically fitted to the fitting portion on the cylinder case side, and a click feeling is provided.
JP 2006-257700 A

  However, in the conventional example described above, the click feeling is brought about by elastically fitting the locking cam on the protruding side edge of the stopper tumbler to the fitting portion of the cylinder case. It is on condition that it is press-contacting to the inner peripheral wall of this.

  As a result, in the conventional example, the occurrence of a click sensation is applied to a cylinder lock that uses only a normal tumbler whose projecting dimension changes from the plug when the unlock key is inserted, subject to the presence of a stopper tumbler. There is a disadvantage that it can not.

  The present invention has been made to eliminate the above drawbacks, and an object of the present invention is to provide a cylinder lock capable of obtaining a click feeling even when only a tumbler for constituting a key difference is used. .

  The plug 1 inserted into the cylinder case 2 is fitted with an appropriate number of tumblers 6 that move forward and backward to the rotational boundary 3 between the cylinder case 2 and the plug 1. Each tumbler 6 is biased toward the locking position where the rotation boundary 3 is closed by the compression spring 4, and all the tumblers 6 are in a state where the plug 1 is in the initial rotation position and the unlocking key 5 is not inserted. Closes the rotation boundary 3 to restrict the rotation of the plug 1.

  When the genuine unlocking key 5 is inserted from this state, the tumbler 6 moves to a position where the rotation boundary 3 is opened and allows the plug 1 to rotate relative to the cylinder case 2.

  In the present invention, a part or all of the tumbler 6 is formed to have a dimension that slightly protrudes to the rotation boundary 3 in a state where the genuine unlocking key 5 is inserted. In order to allow the plug 1 to be rotated by the genuine unlocking key 5 in a state where the rotation boundary 3 is closed by the tumbler 6, the shoulder portion of the tumbler 6, that is, when the plug 1 is rotated, A chamfered portion is formed at a contact portion or a contact portion of the shoulder portion of the tumbler 6 of the cylinder case 2.

  The protruding dimension of the tumbler 6 is the function of the tumbler 6, that is, the height at which the component force in the moving direction of the tumbler 6 is not generated in the chamfered portion when the unlocking key 5 having a different cutting depth is inserted, that is, The chamfered portion is set so as not to face the rotation boundary 3.

  Under the above configuration, when the plug 1 is forcibly rotated from the initial rotation position with the genuine unlocking key 5 inserted, the tumbler 6 is driven by the component force from the chamfer to open the rotation boundary 3 and the plug 1 Can be rotated. When the plug 1 is rotated, the tumbler 6 urged in the direction of closing the rotation boundary 3 is in sliding contact with the inner peripheral wall of the cylinder case 2 or the outer peripheral wall of the plug 1 while pressing the plug 1. After rotating to the initial rotation position and performing the unlocking operation, when returning to the initial rotation position again, the tumbler 6 whose movement is restricted by the inner peripheral wall or the like of the cylinder case 2 returns to the protruding position. , Click feeling occurs.

  Therefore, according to the present invention, since a click feeling is obtained by using the tumbler 6 forming a normal unlocking cord, a special tumbler 6 is not required and the structure is simplified.

  The tumbler 6 can be either pin-shaped or plate-shaped. The pin-shaped tumbler 6 includes a tumbler 6 in the plug 1 held in the plug 1 and a drive pin held in the cylinder case 2, and the boundary between the drive pin and the tumbler 6 in the plug 1 coincides with the rotation boundary 3. By doing so, the rotation of the plug 1 is allowed.

  The drive pin is given a biasing force toward the inside of the plug 1, and the drive pin slightly protrudes into the plug 1 in a state where the genuine unlocking key 5 is inserted. When the chamfered portion is formed on the drive pin side, when the unlocking key 5 is rotated from this state, the chamfered portion of the drive pin comes into contact with the cylinder case 2 and when the rotational operation force is applied, the drive pin is compressed. The tip 4 moves against the urging force of the spring 4 until it reaches the rotation boundary 3, and the rotation operation to the plug 1 is not hindered.

  Similarly, when the chamfered portion is formed on the cylinder case 2 side, the dry pin is driven to enable the rotation operation. When returning from the non-initial rotation position, the drive pin is pressed against the outer periphery of the plug 1 by the urging force. When the initial rotation position is reached, the plug 1 falls into the plug 1 to provide a click feeling.

When using a plate-shaped tumbler 6 for the tumbler 6,
A cylinder case 2 having a lock recess 7 on the inner peripheral wall;
One end is engaged with and disengaged from the lock recess 7 and is inserted into the cylinder case 2 with an appropriate number of plate-like tumblers 6 biased in the locking direction by the compression spring 4, and the genuine unlocking key 5 is inserted. A plug 1 that drives the tumbler 6 in the direction of releasing the lock with the lock recess 7 and enables the cylinder case 2 to idle,
An appropriate number of the tumblers 6 is mounted so that one end protrudes into the lock recess 7 when the genuine unlocking key 5 is inserted, and can be moved into the plug 1 by a rotation operation to the plug 1.
It is configured by applying a resistance force to the rotation operation from the initial rotation position.

  According to the present invention, it is possible to obtain a click feeling even when only the tumbler for configuring the key difference is used.

  As shown in FIGS. 1 and 2, the cylinder lock is formed by inserting a plug 1 into a cylinder case 2 in a rotatable manner. A groove-like lock recess 7 is formed in the inner wall of the cylinder case 2 in a longitudinal direction at an opposing position.

  The plug 1 is inserted into the cylinder case 2 by fitting the head portion 1a into the stopper recess 2a of the cylinder case 2 and inserted into the cylinder case 2, and is extracted forward by the operation lever 11 fixed to the rear end. Is prevented. The plug 1 is provided with a key insertion groove having a rectangular cross section opened downward from the front end toward the rear, and a key restricting protrusion 1c is provided at the front end of the key insertion groove.

  The key restricting protrusion 1c projects inward from the side wall of the key inserting groove 1b and restricts the insertion of tools other than the predetermined unlocking key 5 into the key inserting groove 1b. In this embodiment, in order to make it possible to use the unlocking key 5 in the inverted state, the key restricting protrusion 1c and the guide groove 8 on the unlocking key 5 side into which the key restricting protrusion 1c is fitted are: It is formed at a point-symmetrical position with respect to the cross-sectional center.

  Further, the plug 1 is provided with a plurality of tumbler insertion grooves 1d orthogonal to the key insertion groove 1b at a predetermined pitch, and one of the two types of disk tumblers 6 is the center of rotation of the plug 1 in each tumbler insertion groove 1d. Is mounted so as to be movable in the radial direction. Hereinafter, when it is necessary to distinguish between the types of the disc tumblers 6, one is referred to as a click-added tumbler 6A, and the other is referred to as a normal tumbler 6B.

  As shown in FIG. 2, the disc tumbler 6 is formed by punching a metal plate material, and a rectangular key insertion opening 9 is opened at the center. These disc tumblers 6, 6... Are urged in the protruding direction by the compression spring 4, and are fitted into the lock recess 7 of the cylinder case 2 without inserting the unlocking key 5, to the cylinder case 2 of the plug 1. Regulate idling.

  In this embodiment, one click-providing tumbler 6A is used at the rear end of the plug 1, and five normal tumblers 6B are mounted in front of the click-providing tumbler 6A. As shown in FIG. 2 (b), when the normal tumbler 6B matches the cord forming recess 5a formed in the unlocking key 5, the upper and lower ends are positioned at the rotational boundary 3 between the plug 1 and the cylinder case 2, and the plug 1 rotation is possible.

  On the other hand, as shown in FIG. 2 (c), the click-giving tumbler 6A has a rounded chamfer 6b that is not provided on the normal tumbler 6B on the shoulder 6a, and the genuine unlocking key 5 is inserted. Thus, one end is formed so as to protrude toward the minute lock recess 7 side. The dimension of the rounded chamfer 6b is set so as to contact the open end of the lock recess 7 when the plug 1 is rotated, as shown in FIG.

  Therefore, in this embodiment, when the plug 1 is rotated with the genuine unlocking key 5 inserted, the shoulder 6a of the click-applying tumbler 6A is brought into the plug 1 inward by pressure contact with the open end of the locking recess 7. A component force is generated. With this component force, the click imparting tumbler 6A is retracted into the plug 1 and the plug 1 can be rotated.

  When the rotational position is returned to the initial rotational position shown in FIG. 2 (c), the click-applying tumbler 6A that is in pressure contact with the inner peripheral wall of the cylinder case 2 by the compression spring 4 is fitted into the lock recess 7 and clicked at this time. A feeling is generated.

  FIG. 4 and subsequent figures show other embodiments of the present invention. In the following description of the embodiment, components that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted. In this embodiment, the normal tumbler 6B is the same as that of the above-described embodiment, and is attached to the tumbler insertion grooves 1d at the five front positions.

  Note that the unlocking end of the guide groove 8 in a plan view of the unlocking key 5 is unlocked in order to fit the guide groove 8 and the fitting protrusion 10 at a predetermined position where a plug described later can rotate. When the key 5 comes into contact with the key groove fitting protrusion 10, an inclination is formed so that the key 5 is fitted to the guide groove 8 and led to a predetermined position.

  As shown in FIG. 5A, the click-giving tumbler 6A attached to the last part includes a keyway fitting protrusion 10 protruding inward from the key insertion opening 9, and the unlocking key 5 inserted. The guide groove 8 is fitted. As shown in FIG. 5B, the position of the click-applying tumbler 6A in the plug 1 is determined by the key groove fitting protrusion 10 being locked to the guide groove 8, and the inserted unlocking key 5 is If the guide groove 8 is provided at a predetermined position, one end of the click applying tumbler 6A slightly protrudes into the lock recess 7.

  When the plug 1 is rotated in this state as shown in FIG. 5 (c), a component force directed inward is generated in the rounded chamfer 6b of the shoulder 6a, so that the inside of the plug 1 as shown in FIG. 5 (d). The plug 1 can be rotated.

In this embodiment, the tumbler 6 for giving a feeling of clicking determines only whether or not the inserted unlocking cord has the same guide groove 8 as the genuine unlocking cord, and the cross-sectional shape is different. If so, it functions to regulate the rotation of the plug 1.
(Appendix 1)
The plug 1 and the cylinder case 2 that rotatably holds the plug 1 move around the boundary 3 to open and close the rotational boundary 3, and are urged to the rotational boundary closed position by the compression spring 4 and are authentic. A cylinder lock provided with an appropriate number of tumblers 6 that are driven to the rotational boundary open position by insertion of an appropriate unlocking key 5;
An appropriate number of the tumblers 6 is attached so that one end of the tumbler 6 protrudes into the rotation boundary 3 so that it can be retracted to the rotation boundary opening position by the rotation operation to the plug 1 when the genuine unlocking key 5 is inserted.
Cylinder lock that provides resistance to rotation from the initial rotation position.
(Appendix 2)
A cylinder case 2 having a lock recess 7 on the inner peripheral wall;
One end is engaged with and disengaged from the lock recess 7 and is inserted into the cylinder case 2 with an appropriate number of plate-like tumblers 6 biased in the locking direction by the compression spring 4, and the genuine unlocking key 5 is inserted. A plug 1 that drives the tumbler 6 in the unlocking direction with the lock recess 7 to enable rotation relative to the cylinder case 2;
An appropriate number of the tumblers 6 is mounted so that one end of the tumbler 6 protrudes into the lock recess 7 so that one end can move to the unlocking position by the rotation operation to the plug 1 when the genuine unlocking key 5 is inserted.
Cylinder lock that provides resistance to rotation from the initial rotation position.
(Appendix 3)
A cylinder case 2 having a lock recess 7 on the inner peripheral wall;
A key insertion opening 9 through which the unlocking key 5 having a guide groove 8 recessed in the side wall is inserted in the center, and one end is engaged with and disengaged from the lock recess 7 and is urged in the locking direction by the compression spring 4. An appropriate number of plate-like tumblers 6 and a plug 1 inserted into the cylinder case 2;
An appropriate number of the tumblers 2 is formed so as to drive the tumbler 6 in the unlocking direction with the lock recess 7 by inserting the genuine unlocking key 5,
The remaining tumbler 6 has one end unlocked by rotating the plug 1 when the key groove fitting protrusion 10 protruding from the inner peripheral wall of the key insertion opening 9 is fitted in the guide groove 8 of the unlocking key 5. It is mounted so as to protrude into the lock recess 7 so as to be movable to the position,
Cylinder lock that provides resistance to rotation from the initial rotation position.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows this invention, (a) is the 1A-1A sectional view taken on the line of (b), (b) is a front view, (c) is 1C-1C sectional view taken on the line. It is a figure which shows the state which inserted the unlocking key, (a) is sectional drawing of a cylinder lock, (b) is a figure which shows a normal tumbler, (c) is a figure which shows a click provision tumbler. It is a figure which shows operation | movement of a click provision tumbler, (a) is a figure which shows the state contact | abutted to the open end of a lock | rock recessed part, (b) is a figure which shows the state retracted | saved in the plug. It is a figure which shows other embodiment. FIG. 4 is a diagram showing a click-giving tumbler, in which (a) shows a state in which the unlocking key is not inserted, (b) shows a state in which the unlocking key is inserted, and (c) shows that the plug is inserted until the shoulder contacts the lock recess The figure which shows the state rotated, (d) is a figure which shows the state which rotated the plug until it retracted in the plug.

Explanation of symbols

1 Plug 2 Cylinder case 3 Rotation boundary 4 Compression spring 5 Unlock key 6 Tumbler 7 Lock recess

Claims (2)

The rotary boundary between the plug and the cylinder case that holds the plug rotatably is opened and closed, the rotary boundary is opened and closed, and it is urged to the rotational boundary closed position by a compression spring, and a genuine unlocking key is inserted. A cylinder lock equipped with an appropriate number of tumblers driven to the rotational boundary open position by
An appropriate number of the tumblers are mounted so that one end protrudes into the rotation boundary so that it can be retracted to the rotation boundary opening position by the rotation operation to the plug when a genuine unlocking key is inserted,
Cylinder lock that provides resistance to rotation from the initial rotation position. A cylinder case having a lock recess on the inner peripheral wall;
One end is engaged with and disengaged from the lock recess, is inserted into the cylinder case with an appropriate number of plate-shaped tumblers biased in the locking direction by a compression spring, and the tumbler is locked with the lock recess by inserting a genuine unlocking key. And a plug that can be rotated in the cylinder case by driving in the unlocking direction of
An appropriate number of the tumblers are mounted so that one end protrudes into the lock recess so that the end can be moved to the unlocking position by rotating the plug when a genuine unlocking key is inserted,
Cylinder lock that provides resistance to rotation from the initial rotation position.

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