WO2014142286A1

WO2014142286A1 - Cylinder lock

Info

Publication number: WO2014142286A1
Application number: PCT/JP2014/056802
Authority: WO
Inventors: 博之峯村; 征一泰
Original assignee: 株式会社オプナス
Priority date: 2013-03-13
Filing date: 2014-03-13
Publication date: 2014-09-18
Also published as: JP2016104926A

Abstract

A cylinder lock (10) configured having: an outer tube (12); an inner tube capable of rotating relative to the outer tube (12); and a tumbler capable of turning between at least a locked position for preventing the inner tube from rotating relative to the outer tube (12), and an unlocked position for allowing the inner tube to rotate relative to the outer tube (12). After the tumbler has been turned in a predetermined direction by a key (42) of the cylinder lock (10), both turning in the predetermined direction and turning in the direction opposite the predetermined direction are restricted by the key (42). As a result, a cylinder lock is provided in which the tumbler does not turn more than anticipated when the key has been inserted, and the tumbler can be moved accurately and quickly to the unlocked position.

Description

Cylinder lock

The present invention relates to a cylinder lock that can move a tumbler to an unlocking position accurately and quickly.

Traditionally, locks used in rental apartments and apartments may have multiple copies of tenants, so for security reasons, each time a resident is replaced, a new lock with a different key code is used. It was necessary to replace it. However, if the lock is changed every time a resident changes, there is a problem that a complicated exchange work is required and a cost burden is large.

In order to solve such conventional problems, various cylinder locks that can change the key code have been proposed. For example, in Patent Document 1, a tumbler is configured by a combination of a first tumbler and a second tumbler, and one of the first tumbler and the second tumbler is rotated in the radial direction of the cylinder lock to A cylinder lock is disclosed in which the key code is changed by releasing the engagement and changing the engagement position between the two.

Japanese Patent No. 3219581

However, in the cylinder lock described in Patent Document 1, in order to change the key code, it is necessary to rotate the bow-shaped tumbler in the radial direction of the cylinder lock, so that a large space is provided in the radial direction of the cylinder. Therefore, there is a problem that it is difficult to reduce the outer diameter of the cylinder lock.

Also, because the tumbler is rotated by inserting the key, for example, when a key with a new key code is inserted vigorously when the key code is changed, the tumbler is rotated to an angle greater than expected, causing an error. The key code might be set.

The present invention has been made to solve such a conventional problem, and when a key is inserted, the tumbler does not rotate more than expected, and the tumbler can be accurately and quickly moved. An object is to provide a cylinder lock that can be moved to an unlocked position.

The cylinder lock according to the present invention includes an outer cylinder, an inner cylinder that can rotate relative to the outer cylinder, a locking position that prohibits relative rotation of the inner cylinder relative to the outer cylinder, and the inner cylinder relative to the outer cylinder. One or a plurality of tumblers that can rotate at least between unlocking positions that allow relative rotation of the cylinder, wherein at least one of the tumblers is After being rotated in a predetermined direction by a key of the cylinder lock, both the rotation in the predetermined direction and the rotation in the direction opposite to the predetermined direction are regulated by the key.

The cylinder lock according to the present invention includes an outer cylinder, an inner cylinder rotatable relative to the outer cylinder, a locking position that prohibits relative rotation of the inner cylinder with respect to the outer cylinder, and the outer cylinder. One or a plurality of tumblers that are slidable at least between unlocking positions that permit relative rotation of the inner cylinder, and at least one of the tumblers includes: After being slid in a predetermined direction by the key of the cylinder lock, both the slide in the predetermined direction and the slide in the direction opposite to the predetermined direction are regulated by the key.

According to the cylinder lock of the present invention, when the key is inserted, the tumbler does not rotate more than expected, and the tumbler can be accurately and quickly moved to the unlocked position.

1 is an exploded perspective view showing a part of a cylinder lock 10 in an exploded manner. It is the external appearance perspective view which looked at the cylinder lock 10 from the front upper side. It is the external appearance perspective view which looked at the outer cylinder 12 from the front lower side. FIG. 3 is an external perspective view of a part of the inner cylinder body 18 and the locking / unlocking mechanism 30 extracted from the cylinder lock 10 and viewed from the front upper side. 3 is an external perspective view of a part of the inner cylinder body 18 and the locking / unlocking mechanism 30 extracted from the cylinder lock 10 and viewed from the lower rear side. FIG. FIG. 6 is a rear view showing the positional relationship among the outer cylinder 12, the locking bar 38, the tumbler support shaft 36, the inner tumbler 32, and the outer tumbler 34. It is sectional drawing which looked at the cross section of the cylinder lock 10 of the locked state from the inner cylinder tail 20 side. It is sectional drawing which looked at the cross section of the cylinder lock 10 of the unlocked state from the inner cylinder tail 20 side. 4 is an external perspective view showing the positional relationship among a key 42, a lock plate 44, a slide plate 46, a tumbler support shaft 36, and an outer tumbler 34. FIG. 4 is a side view showing a positional relationship among a key 42, a lock plate 44, a slide plate 46, a tumbler support shaft 36, and an outer tumbler 34. FIG. It is sectional drawing which looked at the cross section of the cylinder lock 10 from the inner cylinder tail 20, and shows the mode of operation | movement of a key code change mechanism in time series. It is sectional drawing which looked at the cross section of the cylinder lock 50 which concerns on the modification 1 from the inner cylinder tail side. It is sectional drawing which looked at the cross section of the cylinder lock 70 which concerns on the modification 2 from the inner cylinder tail side. It is a figure explaining the cylinder lock 100 which concerns on the modification 3, (a) It is sectional drawing which looked at the cross section of the cylinder lock 100 from the inner cylinder tail side, (b) The cross section of the cylinder lock 100 from the inner cylinder tail side It is sectional drawing seen, (c) It is the upper surface schematic diagram of the key 142 and the inner tumbler 132. It is a figure explaining the cylinder lock 200 which concerns on the modification 4, (a) It is sectional drawing which looked at the cross section of the cylinder lock 200 from the inner cylinder tail side, (b) The cross section of the cylinder lock 200 from the inner cylinder tail side FIG. 4C is a cross-sectional view, and is a schematic top view of the key 242 and the inner tumbler 232. It is a figure explaining the cylinder lock 300 which concerns on the modification 5, (a) It is sectional drawing which looked at the cross section of the cylinder lock 300 from the inner cylinder tail side, (b) The cross section of the cylinder lock 300 from the inner cylinder tail side FIG. 4C is a cross-sectional view, and is a schematic top view of the key 342 and the inner tumbler 332. It is a figure explaining the cylinder lock 400 which concerns on the modification 6, (a) It is sectional drawing which looked at the cross section of the cylinder lock 400 from the inner cylinder tail side, (b) The cross section of the cylinder lock 400 from the inner cylinder tail side. FIG. 4C is a cross-sectional view, and is a schematic top view of the key 442 and the inner tumbler 432. It is a figure explaining the cylinder lock 500 which concerns on the modification 7, (a) It is sectional drawing which looked at the cross section of the cylinder lock 500 from the inner cylinder tail side, (b) The cross section of the cylinder lock 500 from the inner cylinder tail side It is sectional drawing seen, (c) It is an upper surface schematic diagram of the key 542 and the inner tumbler 532, (d) It is a side view of the key 542. It is a figure explaining the cylinder lock 700 which concerns on the modification 8, (a) It is sectional drawing which looked at the cross section of the cylinder lock 700 from the inner cylinder tail side, (b) The cross section of the cylinder lock 700 from the inner cylinder tail side FIG. 4C is a cross-sectional view, and is a schematic top view of the key 742 and the inner tumbler 732. It is a figure explaining the cylinder lock 800 which concerns on the modification 9, (a) It is sectional drawing which looked at the cross section of the cylinder lock 800 from the inner cylinder tail side, (b) The cross section of the cylinder lock 800 from the inner cylinder tail side FIG. 6C is a cross-sectional view, and is a schematic top view of (c) key 842 and inner tumbler 832. It is a figure explaining the cylinder lock 900 which concerns on the modification 10, (a) It is sectional drawing which looked at the cross section of the cylinder lock 900 from the inner cylinder tail side, (b) The cross section of the cylinder lock 900 from the inner cylinder tail side FIG. 6C is a cross-sectional view, and is a schematic top view of the key 942 and the inner tumbler 932.

Hereinafter, the cylinder lock 10 according to the present embodiment will be described in detail with reference to the drawings.

First, the overall configuration of the cylinder lock 10 will be described with reference to FIGS. 1 and 2. 1 is an exploded perspective view showing a part of the cylinder lock 10 in an exploded manner, and FIG. 2 is an external perspective view of the cylinder lock 10 as viewed from the front upper side.

The cylinder lock 10 according to this embodiment includes an outer cylinder 12, a cylindrical inner cylinder 14 (an inner cylinder cap 16, an inner cylinder body 18, and an inner cylinder tail 20) that is rotatably inserted into the outer cylinder 12. Locking / unlocking mechanism 30 (inner tumbler 32, outer tumbler 34, tumbler support shaft 36, locking bar 38, only a part of which is shown in FIG. 1) accommodated in the inner cylinder 14, and a key code change accommodated in the inner cylinder 14 And a mechanism 40 (a tumbler support shaft 36, a lock plate 44, a slide plate 46, only a part of which is shown in FIG. 1).

Note that the locking / unlocking mechanism 30 and the key code changing mechanism 40 are classified for convenience of explanation, and some of the members constituting the locking / unlocking mechanism 30 may also be used as members of the key code changing mechanism 40. Some members constituting the cord changing mechanism 40 may also serve as the members of the locking / unlocking mechanism 30 in some cases. Further, in each drawing shown below, the illustration of the inner tumbler 32, the outer tumbler 34, the divider plate 18b, etc. is partially omitted for convenience of explanation.

Next, the outer cylinder 12 of the cylinder lock 10 will be described with reference to FIG. FIG. 3 is an external perspective view of the outer cylinder 12 as viewed from the front lower side.

The outer cylinder 12 according to the present embodiment includes a hollow inner cylinder accommodating portion 12aa into which the inner cylinder 14 can be inserted, and a guide groove 12b for guiding a slide plate 46 described later to a predetermined position. Further, on the inner wall upper side of the inner cylinder housing portion 12aa, a first locking bar housing portion 12a1 capable of housing a part of the locking bar 38 (see FIGS. 1, 4 and the like) when the cylinder lock 10 is locked, and the cylinder lock A second locking bar accommodating portion 12a2 capable of accommodating a part of the locking bar 38 when the key code 10 is released is formed from one axial side to the other side of the outer cylinder 12.

Next, the inner cylinder 14 of the cylinder lock 10 will be described with reference to FIGS. 1 and 2 again. The inner cylinder 14 according to this embodiment includes an inner cylinder body 18, an inner cylinder cap 16 that can be attached to and removed from one axial side (front) of the inner cylinder body 18, and the other axial side (rear side) of the inner cylinder 14 body. And an inner cylinder tail 20 that is detachable.

The inner cylinder cap 16 has a key insertion slot 16a into which a key 42 for performing the locking / unlocking operation of the cylinder lock 10 can be inserted, and a change plate (elongated metal piece) for operating the key code changing mechanism 40. And a change plate insertion port 16b into which can be inserted.

Further, the inner cylinder body 18 is a disk-like shape that is fixedly disposed in each of two curved plate-shaped side plates 18a disposed on both sides in the radial direction and a plurality of slits formed in the two side plates 18a. The plurality of divider plates 18b (only part of which are shown in FIG. 1).

A pair of inner tumblers 32 and an outer tumbler 34 constituting a locking / unlocking mechanism 30 described later are accommodated in each space defined by two adjacent divider plates 18b. A locking bar 38 constituting a locking / unlocking mechanism 30 to be described later is slidable in the vertical direction above the plurality of divider plates 18b, and a tumbler forming a locking / unlocking mechanism 30 to be described below is provided below the locking bar 38. A support shaft 36 is slidably disposed in the axial direction.

Further, the inner cylinder tail 20 is a member that functions as an output shaft for moving other members (not shown) between the locked position and the unlocked position.

Next, the locking / unlocking mechanism 30 of the cylinder lock 10 will be described with reference to FIGS. 4 is an external perspective view of a part of the inner cylinder body 18 and the locking / unlocking mechanism 30 extracted from the cylinder lock 10 and viewed from the front upper side, and FIG. 5 is a perspective view of the inner cylinder body 18 and the unlocking mechanism from the cylinder lock 10. FIG. 6 is an external perspective view of a part of the locking mechanism 30 extracted from the rear lower side. FIG. 6 shows the positional relationship among the outer cylinder 12, the locking bar 38, the tumbler support shaft 36, the inner tumbler 32, and the outer tumbler 34. It is a rear view for showing.

The locking / unlocking mechanism 30 has a frame-like inner tumbler 32 rotatably supported by a support portion 18b1 formed at the lower end of the divider plate 18b, and can be engaged with the inner tumbler 32 above the inner tumbler 32. The disc-shaped outer tumbler 34 disposed, the rod-shaped tumbler support shaft 36 slidably disposed in the axial direction on the plurality of divider plates 18b in a state where the plurality of outer tumblers 34 are rotatably supported, and the plurality of dividers A rod-shaped locking bar 38 disposed above the plate 18b and urged upward (on the outer cylinder 12 side) by a spring (not shown) and an inner tumbler 32 are attached in the direction of the locking position (the direction of arrow A in FIG. 7). And a plate spring 41 (see FIGS. 7 and 8) for energizing.

The inner tumbler 32 of the locking / unlocking mechanism 30 includes a frame-shaped main body portion 32a, a plurality of external teeth 32b that are formed above the main body portion 32a and mesh with the outer teeth 34b of the outer tumbler 34, and a lower portion of the main body portion 32a. An engagement recess 32c that engages with the support 18b1 of the divider plate 18b, an engagement protrusion 32d that protrudes in the thickness direction of the main body 32a and engages with the opening 18b2 of the divider plate 18b, A key insertion hole 32e formed of an opening formed on the inside of the main body 32a, a first key sense part 32f and a second key sense part 32g formed to project inward from the key insertion hole 32e, It is comprised.

The inner tumbler 32 is supported below by the support portion 18b1 of the divider plate 18b, and the engaging projection 32d formed at the upper portion is engaged with the opening 18b2 of the divider plate 18b. For this reason, the inner tumbler 32 is configured to be rotatable in the left-right direction with the support portion 18b1 of the divider plate 18b as a fulcrum while being guided by the opening 18b2 of the divider plate 18b.

The outer tumbler 34 of the locking / unlocking device 30 includes a disk-shaped main body portion 34a, a plurality of external teeth 34b that are formed below the main body portion 34a and mesh with the outer teeth 32b of the inner tumbler 32, and an upper portion of the main body portion 34a. And an engaging concave portion 34c that can be engaged with an engaging convex portion 38a formed below the locking bar 38.

The outer tumbler 34 is rotatably supported by a tumbler support shaft 36, and the outer teeth 34b formed below are engaged with the outer teeth 32b of the inner tumbler 32. For this reason, the outer tumbler 34 can be rotated in synchronization with the rotation of the inner tumbler 32, and the position of the engaging recess 34c is changed in accordance with the rotation angle.

Next, the operation of the locking / unlocking mechanism 30 of the cylinder lock 10 will be described with reference to FIGS. 7 is a cross-sectional view of the cylinder lock 10 in a locked state as viewed from the inner cylinder tail 20 side, and FIG. 8 is a cross-sectional view of the cylinder lock 10 in an unlocked state as viewed from the inner cylinder tail 20 side. It is sectional drawing.

7 is a state in which the key 42 (see FIG. 8) is not inserted into the key insertion hole 32e of the inner tumbler 32, and only the urging force from the leaf spring 41 is applied to the inner tumbler 32. is there.

In this state, the inner tumbler 32 receiving the urging force from the leaf spring 41 is rotated in the direction of arrow A shown in FIG. 7, and the outer tumbler 34 engaged with the inner tumbler 32 is moved to the arrow shown in FIG. Rotated in the B direction. By the rotation of the outer tumbler 34, the engaging recess 34c of the outer tumbler 34 moves from the unlocked position (position shown in FIG. 8) to the locked position (position shown in FIG. 7).

In a state where the engagement recess 34 c of the outer tumbler 34 is moved to the locking position, the engagement protrusion 38 a of the locking bar 38 cannot be engaged with the engagement recess 34 c of the outer tumbler 34, and the locking bar 38 Cannot completely exit from the first locking bar accommodating portion 12b1 of the outer cylinder 12. For this reason, the locking bar 38 is in a state straddling the divide plate 18b and the outer cylinder 12, the inner cylinder 14 cannot rotate relative to the outer cylinder 12, and the cylinder lock 10 is locked.

In this example, the state in which the key 42 is not inserted has been described. However, when a key whose key code does not match is inserted, the engagement of the outer tumbler 34 is possible even if the inner tumbler 32 is rotatable. The situation is the same because the recess 34c cannot be moved to the release position.

On the other hand, in the unlocked state shown in FIG. 8, the key 42 whose key code matches is inserted into the key insertion hole 32 e of the inner tumbler 32, and the inner tumbler 32 rotates against the urging force from the leaf spring 41. State.

The key 42 has a keyway (keyway) 42b. The key groove 42b in the present specification refers to a portion where key code formation processing has been performed on a key material (blank key) prior to key code formation processing, and a portion used as a key code. Say. The portion used as the key code includes a portion other than the key groove 42b (a part of the key 42 in an unprocessed state where the key groove 42b is not formed). That is, a part of the key 42 other than the key groove 42b may be used as a key code, and the same applies to the following modifications.

Specifically, in FIG. 8, the key 42 has a key groove 42b formed on a side surface 42s1 which is one end surface in the thickness direction.

The key groove 42b in the present embodiment is a groove that can accommodate at least a part of the inner tumbler 32 (here, the first key sense portion 32f), and one of the keys 42 in the longitudinal direction corresponding to the key code. It is carved from the side to the other end side. Further, at least a part of the key groove 42b is formed between a plurality of inner tumblers 32 arranged in the axial direction of the cylinder lock 10 (the inner tumbler 32 on the inner cylinder cap 16 side and the inner tumbler 32 on the inner cylinder tail 20 side). Are formed to be different. That is, the positions of the key grooves 42b of the plurality of inner tumblers 32 in the short direction of the keys 42 are not substantially changed along the longitudinal direction, and the formation depth of the key grooves 42b is different along the longitudinal direction (randomly). To be deep). The width of the key groove 42b is substantially the same as the width of the first key sense portion 32f.

When the key 42 is inserted, the second key sense portion 32g of the inner tumbler 32 is pressed by the side surface 42s2 of the key 42, and the first key sense portion 32f of the inner tumbler 32 enters the key groove 42b of the key 42. .

At this time, the inner tumbler 32 is pressed by the key 42 and rotated in the direction of arrow C shown in FIG. 8, and the outer tumbler 34 engaged with the inner tumbler 32 is rotated in the direction of arrow D shown in FIG. However, when the key code of the inserted key 42 matches, the engaging recess 34c of the outer tumbler 34 is moved from the locking position (position shown in FIG. 7) to the unlocking position (position shown in FIG. 8). Moving.

In a state where the engagement recess 34c of the outer tumbler 34 is moved to the unlocked position, the engagement protrusion 38a of the locking bar 38 can be engaged with the engagement recess 34c of the outer tumbler 34. By rotating 42, the locking bar 38 descends against the urging force of the spring, moves out of the first locking bar accommodating portion 12a1 of the outer cylinder 12, and moves into the divider plate 18b. For this reason, the inner cylinder 14 can be rotated relative to the outer cylinder 12, and the cylinder lock 10 is unlocked.

Thus, in the cylinder lock 10, the inner tumbler 32 rotates in a predetermined direction (the direction of arrow C shown in FIG. 8) by inserting the key 42, but the key 42 is completely inserted into the cylinder lock 10. Then, since the inner wall of the inner tumbler 32 abuts on one side surface (the left side surface 42s1 in this example) of the key 42, the inner tumbler 32 is restricted from rotating in a predetermined direction by the key 42. Further, since the second key sense portion 32g of the inner tumbler 32 is also in contact with the other side surface of the key 42 (in this example, the right side surface 42s2), the inner tumbler 32 is rotated by the key 42 in the direction opposite to the predetermined direction. Are also regulated.

With such a configuration, in the cylinder lock 10, when the key 42 is inserted, the inner tumbler 32 does not rotate more than expected, and the inner tumbler 32 and the outer tumbler 34 are unlocked accurately and quickly. Can be moved to.

In this example, the case where the second key sense portion 32g of the inner tumbler 32 is pressed by the flat right side surface 42s2 of the key 42 is illustrated, but the right side surface 42s2 also has a shallow key groove (key A groove) may be formed, and the second key sense portion 32g may enter the key groove.

Next, the key code changing mechanism 40 of the cylinder lock 10 will be described with reference to FIGS. 9 is an external perspective view showing the positional relationship among the key 42, the lock plate 44, the slide plate 46, the tumbler support shaft 36, and the outer tumbler 34. FIG. 10 shows the key 42, the lock plate 44, and the slide. 4 is a side view showing a positional relationship among a plate 46, a tumbler support shaft 36, and an outer tumbler 34. FIG. FIG. 11 is a cross-sectional view of the cross section of the cylinder lock 10 as seen from the inner cylinder tail 20 side, and shows the operation of the key code changing mechanism 40 in time series.

When the change plate is inserted into the change plate insertion port 16b (see FIGS. 1 and 2) with the key 42 inserted into the cylinder lock 10, the slide plate 46 is slid upward through the change plate. A part of the plate 46 enters the guide groove 12b of the outer cylinder 12 (see FIG. 11B).

When the key 42 is turned clockwise in this state, the slide plate 46 slides upward while being guided by the guide groove 12b (see FIG. 11C), and the tumbler support shaft 36 pushed by the slide plate 46 is pivoted. It is slid to the back side in the direction and pushed behind the cylinder lock 10 (inner cylinder tail 20 side). The tumbler support shaft 36 pushed rearward is coupled to the two lock plates 44 arranged in front and rear of the inner cylinder body 18.

When the key 42 is further turned clockwise from the state shown in FIG. 11 (c), the locking bar 38 that has retreated from the first locking bar accommodating portion 12a1 enters the second locking bar accommodating portion 12a2 again. Further, when the slide plate 46 reaches the uppermost portion of the guide groove 12b, the tumbler support shaft 36 lifted upward by the slide plate 46 and the two front and rear lock plates 44 coupled to the tumbler support shaft 36 are provided. And slide outward in the radial direction of the inner cylinder 14 (see FIG. 11D).

Further, the sliding of the tumbler support shaft 36 and the lock plate 44 causes all of the outer tumbler 34 supported by the tumbler support shaft 36 to slide outward in the radial direction of the inner cylinder 14. The engagement of the outer teeth 32b of the inner tumbler 32 is released, and the key code is released (reset) (see FIG. 11E).

When the key 42 is pulled out at the key code release position shown in FIGS. 11D and 11E and a key with a new key code is inserted, the inner tumbler 32 rotates corresponding to the key code increment of the new key. . When the new key is turned counterclockwise to return to the state shown in FIG. 5A, the outer teeth 34b of the outer tumbler 34 and the outer teeth 32b of the inner tumbler 32 are engaged, and a new key code is determined. To do.

Thereafter, unless the change plate is inserted and the inner cylinder 14 is rotated to the key code release position, the key code changing mechanism 40 does not operate. Therefore, the outer teeth 34b of the outer tumbler 34 and the outer teeth of the inner tumbler 32 are not operated. The engagement of 32b is not released (the key code is not changed).

As described above, in the cylinder lock 10, when the key 42 is completely inserted into the cylinder lock 10, the inner tumbler 32 is restricted from rotating in both directions by the key 42. When the key is inserted vigorously, the situation where the inner tumbler 32 rotates to an angle larger than expected and an incorrect key code is set can be surely prevented.

As described above, the cylinder lock (for example, the cylinder lock 10) according to the above embodiment includes the outer cylinder (for example, the outer cylinder 12) and the inner cylinder (for example, the inner cylinder) that can rotate relative to the outer cylinder. 14), a locking position that prohibits relative rotation of the inner cylinder with respect to the outer cylinder (for example, the position shown in FIG. 7), and an unlocking position that allows relative rotation of the inner cylinder with respect to the outer cylinder (for example, One or a plurality of tumblers (for example, the inner tumbler 32) that can rotate at least between the positions shown in FIG. 8, and at least one of the tumblers. Is rotated in a predetermined direction (for example, the direction of arrow C shown in FIG. 8) by the key (for example, key 42) of the cylinder lock, and then rotated in the predetermined direction by the key and the direction opposite to the predetermined direction. (For example, figure Both rotation of the direction of the arrow A) shown in is restricted, a lock cylinder, characterized in that.

According to the cylinder lock according to the above embodiment, when the key is inserted, the tumbler does not rotate more than expected, and the tumbler can be accurately and quickly moved to the unlocked position.

The tumbler includes a combination of a plurality of tumbler members including at least a first tumbler member (for example, the inner tumbler 32) and a second tumbler member (for example, the outer tumbler 34). The unlocking position of the tumbler can be changed by changing the engagement position with the second tumbler member, and the tumbler member (for example, the inner tumbler 32) is moved in a predetermined direction by the key of the cylinder lock. After the rotation, both the rotation in the predetermined direction and the rotation in the direction opposite to the predetermined direction may be regulated by the key.

With this configuration, in addition to being able to change the key code without disassembling the cylinder lock, when a key with a new key code is vigorously inserted when the key code is changed Thus, it is possible to reliably prevent a situation where the tumbler (or tumbler member) rotates to an angle larger than expected and an erroneous key code is set.

Further, at least one of the tumblers (for example, the inner tumbler 32) is restricted from rotating in the predetermined direction by a part (for example, the side surface 42s1) of the key (for example, the key 42). The rotation or sliding in the direction opposite to the predetermined direction may be restricted by another part (for example, the side surface 42s2), and the key has a keyway (for example, a keyway 42b), The part of the key is the keyway or a part other than the keyway (for example, the side surface 42s1), and the other part of the key is the part other than the keyway or the keyway (for example, the side surface 42s2). ).

In addition, the tumbler or the tumbler member is controlled to rotate in the predetermined direction by one side surface of the key (for example, the left side surface of the key 42), and the other side surface (opposing the one side surface of the key) For example, rotation in the direction opposite to the predetermined direction may be restricted by the right side surface of the key 42, and rotation in the predetermined direction and rotation in the direction opposite to the predetermined direction may be performed by a key groove carved in the key. Both movements may be restricted.

With such a configuration, since the rotation of the tumbler can be restricted by the key used for the locking / unlocking operation, it is not necessary to add a new member to restrict the rotation of the tumbler, and the size and the size of the tumbler can be reduced. Cost reduction can be realized.

Note that the actions and effects described in the embodiments of the present invention only list the most preferable actions and effects resulting from the present invention, and the actions and effects according to the present invention are described in the embodiments of the present invention. It is not limited to what was done.

Therefore, for example, in the above-described embodiment, the tumbler is configured by the two tumbler members of the inner tumbler 32 and the outer tumbler 34. However, the tumbler may be configured by one tumbler member, or may be configured by three or more tumbler members. May be. Further, the shape of the tumbler member is not particularly limited.

Further, the cylinder lock according to the present invention is not limited to the cylinder lock capable of converting the key code, and may be a cylinder lock to which the key code is fixed. The key code conversion method is not limited to the example shown in the above embodiment.

FIG. 12 is a cross-sectional view of the cross section of the cylinder lock 50 according to Modification 1 as viewed from the inner cylinder tail side.

The cylinder lock 50 according to the modified example 1 can mesh with the first inner tumbler 52 that can rotate around the rotation shaft 52 a and the outer teeth 52 b of the first inner tumbler 52. A first outer tumbler 54 that can rotate around the rotation shaft 54a in synchronization with the rotation, a second inner tumbler 56 that can rotate around the rotation shaft 56a, and outer teeth 56b of the second inner tumbler 56, A second outer tumbler 58 that can be meshed and can rotate around the rotation shaft 58 a in synchronization with the rotation of the first inner tumbler 56, the outer teeth 54 b of the first outer tumbler 54, and the second outer tumbler 58. And a third outer tumbler 60 that can mesh with the teeth 58b and can be rotated clockwise or counterclockwise in synchronization with the rotation of the first outer tumbler 54 and the second outer tumbler 58. .

Further, the key 62 has

key grooves

64a and 66a formed on both end surfaces (side surfaces 64 and 66) in the thickness direction, respectively. The key groove 64a is formed by cutting a portion other than the end face (the upper surface and the lower surface in the drawing) of the key 62 into a line shape along the longitudinal direction of the key 62 with a cutting tool, for example, and first keys that face each other. A surface (upper surface 64a1 of the groove) and a second surface (lower surface 64a2 of the groove) are formed. In this case, the first surface (groove upper surface 64a1) and the second surface (groove lower surface 64a2) are both surfaces constituting one key groove 64a. The key groove 64a is engraved so that the formation depth in the longitudinal direction of the key does not substantially change, and the formation position of the groove in the lateral direction changes vertically along the longitudinal direction.

Further, the key groove 66a is formed by cutting portions other than the end face (the upper surface and the lower surface in the drawing) of the key 62 into a line shape along the longitudinal direction of the key 62 with a cutting tool, for example, and facing each other. The first surface (groove upper surface 66a1) and the second surface (groove lower surface 66a2) are formed. The first surface (groove upper surface 66a1) and the second surface (groove lower surface 66a2) in this case are both surfaces constituting one key groove 66a. The key groove 66a is engraved so that the formation depth of the key in the longitudinal direction does not substantially change, and the groove formation position in the lateral direction changes vertically along the longitudinal direction.

1st key sense part 52c is projected and formed in the end of the 1st inner tumbler 52. When the key 62 is inserted into the key insertion hole of the cylinder lock 50, the first key sense portion 52c enters the key groove 64a carved in the side surface 64 on one side in the short side direction (thickness direction) of the key 62. As the key 62 is inserted or withdrawn, the key 62 is swung in the vertical direction along the key groove 64a. Although not shown, the key groove 64a is engraved so as to meander from one side to the other side in the longitudinal direction of the key 62 corresponding to the key code, and the width thereof is the first key sense portion 52c. The width is substantially the same.

Also, a second key sense portion 56 c is formed to protrude from one end of the second inner tumbler 56. When the key 62 is inserted into the key insertion hole of the cylinder lock 50, the second key sense portion 56c enters the key groove 66a carved in the side surface 66 on the other side in the short side direction (thickness direction) of the key 62. As the key 62 is inserted or withdrawn, the key 62 is swung in the vertical direction along the key groove 66a. Although not shown, the key groove 66a is engraved so as to meander from one side to the other side in the longitudinal direction of the key 62 corresponding to the key code, and the width thereof is the second key sense portion 56c. The width is substantially the same.

When the first key sense portion 52c is guided by the key groove 64a and pushed downward along the shape of the key groove 64a (in the direction of arrow H in the figure), the first inner tumbler 52 is rotated clockwise, The first outer tumbler 54 is rotated counterclockwise (in the direction of arrow I in the figure) in synchronization with the rotation of the first inner tumbler 52, and the third outer tumbler is synchronized with the rotation of the first outer tumbler 54. 60 is rotated clockwise.

Further, when the second key sense portion 56c is guided by the key groove 66a and pushed upward along the shape of the key groove 66a (in the direction of the arrow J shown in the figure), the second inner tumbler 56 rotates clockwise. The second outer tumbler 58 is rotated counterclockwise (in the direction of arrow K in the figure) in synchronization with the rotation of the second inner tumbler 56, and the third outer tumbler 58 is synchronized with the rotation of the second outer tumbler 58. The outer tumbler 60 is rotated clockwise.

When one of the

key grooves

64a and 66a guides the first key sense portion 52c downward, the other key groove 66a moves the second key sense portion 56c upward (first The third outer tumbler 60 is rotated in the clockwise direction so as to be guided in the direction opposite to the moving direction of the key sense portion 52c.

On the other hand, when the key groove 64a of the key 62 guides the first key sense portion 52c upward, the other key groove 66a moves the second key sense portion 56c downward ( The third outer tumbler 60 is rotated in the counterclockwise direction, so as to be guided in the direction opposite to the moving direction of the first key sense portion 52c.

The third outer tumbler 60 is formed with an engagement recess 60c that can be engaged with an engagement protrusion 38a formed below the locking bar 38. In a state where the engagement recess 60a of the third outer tumbler 60 is moved to the locking position, the engagement protrusion 38a of the locking bar 38 cannot be engaged with the engagement recess 60a of the third outer tumbler 60. The locking bar 38 cannot be completely retracted from the locking bar accommodating portion 12a of the outer cylinder 12. For this reason, the locking bar 38 is in a state straddling the outer cylinder 12 and the inner cylinder 14, the inner cylinder 14 cannot rotate relative to the outer cylinder 12, and the cylinder lock 50 is locked.

On the other hand, in a state where the engagement concave portion 60a of the third outer tumbler 60 is moved to the unlocked position (the state shown in FIG. 12), the engagement convex portion 38a of the locking bar 38 is engaged with the third outer tumbler 60. Since it is possible to engage with the recess 60a, when the key 62 is turned, the locking bar 38 descends against the urging force of a spring (not shown), and then retracts from the locking bar accommodating portion 12a of the outer cylinder 12 to move to the inner cylinder. 14 to move inside. For this reason, the inner cylinder 14 can rotate relative to the outer cylinder 12, and the cylinder lock 50 is unlocked.

In the cylinder lock 50 of the first modification, the first inner tumbler 52 is rotated in a predetermined direction (the direction indicated by the arrow H in the figure) by inserting the key 62, but the key 62 is completely inserted into the cylinder lock 50. In this state, the lower surface of the first key sense portion 52c contacts the lower surface 64a2 of the key groove 64a of the key 62, so that the first inner tumbler 52 is restricted from rotating in a predetermined direction by the key groove 64a of the key 62. . In addition, since the upper surface of the first key sense portion 52c contacts the upper surface 64a1 of the key groove 64a of the key 62, the first inner tumbler 52 is also restricted from rotating in the direction opposite to the predetermined direction by the key groove 64a of the key 62. Is done.

Further, in the cylinder lock 50, the second inner tumbler 56 is rotated in a predetermined direction (in the direction of arrow J shown in the figure) by inserting the key 62, but in a state where the key 62 is completely inserted into the cylinder lock 50. Since the lower surface of the second key sense portion 56 c comes into contact with the lower surface 66 a 2 of the key groove 66 a of the key 62, the second inner tumbler 56 is restricted from rotating in a predetermined direction by the key groove 66 a of the key 62. In addition, since the upper surface of the second key sense portion 56c is in contact with the upper surface 66a1 of the key groove 66a of the key 62, the second inner tumbler 56 is also restricted from rotating in the direction opposite to the predetermined direction by the key groove 66a of the key 62. Is done.

With such a configuration, in the cylinder lock 50, when the key 62 is inserted, the first and second

inner tumblers

52 and 56 do not rotate more than expected, and the first and second

inner tumblers

52 , 56 and the first to third

outer tumblers

54, 58, 60 can be accurately and quickly moved to the unlocked position.

FIG. 13 is a cross-sectional view of the cylinder lock 70 according to Modification 2 as viewed from the inner cylinder tail side.

The cylinder lock 70 according to the second modified example is capable of meshing with an inner tumbler 72 slidable in the horizontal direction and an outer tooth 72a of the inner tumbler 72, and is centered on a rotation shaft 74a in synchronization with the sliding of the inner tumbler 72. A first outer tumbler 74 that can rotate as a second outer tooth 74b of the first outer tumbler 74, and a first outer tumbler 74 that is rotatable about a rotation shaft 76a in synchronization with the rotation of the first outer tumbler 74. Two outer tumblers 76, and a third outer tumbler 78 that can mesh with the outer teeth 76b of the second outer tumbler 76 and can slide and rotate in the horizontal direction in synchronization with the rotation of the second outer tumbler 76. Configured.

Key grooves

82a and 82b are formed on both end surfaces of the key 82 in the short direction. The key groove 82a is obtained by cutting one end face (side face) in the short side direction (width direction) of the key 82 in a blank key state into, for example, a concavo-convex shape in a top view, and a first face (side face 82s1). have. The key groove 82b is obtained by cutting the other end face (side face) in the short direction (width direction) of the key 82 in a blank key state into, for example, an uneven shape, and the key groove 82b is formed on the second face ( Side surface 82s2). That is, the first surface (side surface 82s1) is a surface constituting one key groove 82a, and the second surface (other side surface 82s2) is a surface constituting another key groove 82b. Further, it can be said that both the first surface and the second surface constitute an end surface in the width direction of the key 82. The

key grooves

82a and 82b are formed so that the positions of the

key grooves

82a and 82b change corresponding to the key code as indicated by a plurality of vertical lines. A plurality of concave and convex portions (or convex portions) are arranged along the longitudinal direction of the key 82 at predetermined intervals. Further, at least a part of the recesses and the protrusions are formed at different depths (a depression amount and a protrusion amount) along the longitudinal direction of the key 82.

A first key sense portion 72b is formed on one end side in the longitudinal direction of the inner tumbler 72 so as to protrude in the short direction. When the key 82 is inserted into the key insertion hole of the cylinder lock 70, the first key sense portion 72b is formed on the first surface constituting the key groove 82a of the key 82 (here, one side in the width direction shown in the figure). And is slid in the horizontal direction.

Further, a second key sense portion 72c is formed on the other end side in the longitudinal direction of the inner tumbler 72 so as to protrude in the short direction. When the key 82 is inserted into the key insertion hole of the cylinder lock 70, the second key sense portion 72c is a second surface that forms the key groove 82b of the key 82 (here, the side surface on the other side in the width direction). 82s2) and is slid in the horizontal direction.

The first key sense portion 72b is pressed to the right in the horizontal direction by the key groove 82a (side surface 82s1) of the key 82, and the second key sense portion 72c is pressed to the right in the horizontal direction by the key groove 82b (side surface 82s2) of the key 82. Then, the first outer tumbler 74 that meshes with the inner tumbler 72 is rotated counterclockwise (in the direction of arrow M shown in the figure), and the second outer tumbler 76 is rotated in synchronization with the rotation of the first outer tumbler 74. The third outer tumbler 78 is slid to the right in the horizontal direction (the direction of the arrow O shown in the drawing) in synchronization with the rotation of the second outer tumbler 76.

The third outer tumbler 78 is formed with an engaging recess 78a that can engage with the locking bar 38. In a state where the engagement recess 78a of the third outer tumbler 78 is moved to the locking position, the locking bar 38 cannot be engaged with the engagement recess 78a of the third outer tumbler 78, and the locking bar 38 is The outer cylinder 12 cannot be completely withdrawn from the locking bar accommodating portion 12a. For this reason, the locking bar 38 is in a state straddling the outer cylinder 12 and the inner cylinder 14, the inner cylinder 14 cannot rotate relative to the outer cylinder 12, and the cylinder lock 70 is locked.

On the other hand, in a state where the engagement recess 78a of the third outer tumbler 78 is moved to the unlocked position (the state shown in FIG. 13), the locking bar 38 engages with the engagement recess 78a of the third outer tumbler 78. Therefore, when the key 82 is turned, the locking bar 38 descends against the urging force of a spring (not shown), retreats from the locking bar accommodating portion 12a of the outer cylinder 12, and moves into the inner cylinder 14. For this reason, the inner cylinder 14 can be rotated relative to the outer cylinder 12, and the cylinder lock 70 is unlocked.

In the cylinder lock 70 of the second modification, the inner tumbler 72 slides in a predetermined direction (in the direction of arrow L shown in the figure) by inserting the key 82, but in a state where the key 82 is completely inserted into the cylinder lock 70. Since the first key sense portion 72b contacts the side surface (first surface) 82s1 of the key groove (first key groove) 82a, the inner tumbler 72 is moved by the side surface of the key 82 (side surface 82s1 of the key groove 82a). Slide in a predetermined direction is restricted. Further, since the second key sense portion 72c contacts the side surface (second surface) 82s2 of the key groove (second key groove) 82b, the inner tumbler 72 has the side surface of the key 82 (side surface 82s2 of the key groove 82b). Therefore, sliding in the direction opposite to the predetermined direction is also restricted.

With this configuration, in the cylinder lock 70, when the key 82 is inserted, the inner tumbler 72 does not slide more than expected, and the inner tumbler 72 and the first to third

outer tumblers

74, 76, 78 can be accurately and quickly moved to the unlocked position.

As described above, the cylinder lock (for example, the cylinder lock 70) according to the above embodiment includes the outer cylinder (for example, the outer cylinder 12) and the inner cylinder (for example, the inner cylinder) that can rotate relative to the outer cylinder. 14) and one or more slidable at least between a locking position for prohibiting relative rotation of the inner cylinder with respect to the outer cylinder and an unlocking position for allowing relative rotation of the inner cylinder with respect to the outer cylinder A tumbler (eg, inner tumbler 32), and at least one of the tumblers is slid in a predetermined direction by a key (eg, key 82) of the cylinder lock. After that, both the slide in the predetermined direction and the slide in the opposite direction to the predetermined direction are regulated by the key.

According to the cylinder lock according to the above-described embodiment, when the key is inserted, the tumbler does not slide more than expected, and the tumbler can be accurately and quickly moved to the unlock position.

FIGS. 14A and 14B are diagrams illustrating a cylinder lock 100 according to Modification 3. FIGS. 14A and 14B are cross-sectional views of the cross section of the cylinder lock 100 as seen from the inner cylinder tail side. (C) is a top schematic view of the key 142 and the inner tumbler 132, showing a state in which the key 142 with the matching key code is inserted into the cylinder lock 100. FIG.

As shown in FIG. 6A, the cylinder lock 100 according to the third modification includes a frame-shaped inner tumbler 132 that is rotatably supported by a support portion 118b1 projectingly formed at the lower end of a divider plate 118b. The disc-shaped outer tumbler 134 is disposed above the inner tumbler 132 so as to be able to mesh with the inner tumbler 132, and the plurality of outer tumblers 134 are rotatably supported and can be slid in the axial direction on the plurality of divider plates 118b. A bar-shaped tumbler support shaft 136 disposed above the bar, a bar-shaped locking bar 138 disposed above the plurality of divider plates 118b and biased upward (on the outer cylinder 112 side) by a spring (not shown), and the inner tumbler 132. And a leaf spring 141 that urges in the direction of the locking position (the direction of arrow O in FIG. 14).

The inner tumbler 132 is formed below the main body 132a, a frame-shaped main body 132a, a plurality of outer teeth 132b that are formed above the main body 132a, and mesh with the outer teeth 134b of the outer tumbler 134. An engagement recess 132c that engages with the support portion 118b1 of the divider plate 118b, a key insertion hole 132e that includes an opening formed inward of the main body portion 132a, and one side surface of the inner wall of the key insertion hole 132e (for example, A first key sense portion 132f that protrudes inward from the left side wall) and a second key that protrudes inward from the other side surface (for example, the right side wall) of the inner wall of the key insertion hole 132e. Sense portion 132g. The key insertion hole 132e is opened in a shape that at least partially coincides with the key insertion hole 118c of the divider plate 118b.

14A is a state where the key 142 is not inserted into the key insertion hole 132e of the inner tumbler 132 and only the urging force from the leaf spring 141 is applied to the inner tumbler 132.

In this state, the inner tumbler 132 receiving the urging force from the leaf spring 141 is rotated in the direction of arrow O shown in FIG. 14A, and the outer tumbler 134 meshing with the inner tumbler 132 is moved to FIG. It is rotated in the direction of arrow P shown in (a). By the rotation of the outer tumbler 134, the engaging recess 134c of the outer tumbler 134 moves from the unlocked position (position shown in FIG. 14B) to the locked position (position shown in FIG. 14A).

In a state where the engaging recess 134c of the outer tumbler 134 is moved to the locking position, the locking bar 138 cannot be engaged with the engaging recess 134c of the outer tumbler 134, and the locking bar housing portion 112a of the outer cylinder 112 is engaged. Cannot leave completely. For this reason, the locking bar 138 is in a state straddling the divider plate 118b and the outer cylinder 112, the inner cylinder 114 cannot rotate relative to the outer cylinder 112, and the cylinder lock 100 is in a locked state.

On the other hand, in the unlocked state shown in FIG. 14B, a key 142 (indicated here by hatching) whose key code matches is inserted into the key insertion hole 132e of the inner tumbler 132, and the inner tumbler 132 is moved from the leaf spring 141. It is in a state of rotating against the urging force.

As shown in FIG. 14C, the key 142 has key grooves 142b1 and 142b2. The key groove (first key groove) 142b1 of the present modification example has an uneven shape on one end surface (side surface 142s1) in the short direction (width direction) of the key 142 in a blank key state, for example, when viewed from above. And has a first surface (side surface 142bs1). The key groove (second key groove) 142b2 is obtained by cutting the other end surface (side surface 142s2) in the short side direction (width direction) of the key 142 in a blank key state into, for example, an uneven shape. The groove 142b2 has a second surface (side surface 142bs2). That is, the first surface (side surface 142bs1) is a surface constituting one key groove 142b1, and the second surface (other side surface 142bs2) is a surface constituting another key groove 142b2. In addition, it can be said that both the first surface and the second surface constitute an end surface of the key 142 in the width direction. The concavo-convex shape is formed corresponding to the key code, and the amount of depression of the concave portion 142a1 and the amount of protrusion of the convex portion 142a2 are in a plurality of stages (here, as shown by broken lines near the right end of FIG. Selection is possible from 4 levels). A plurality of concave portions 142 a 1 and convex portions 142 a 2 are arranged at predetermined intervals along the longitudinal direction of the key 142. Further, at least a part of the concave portion 142a1 and the convex portion 142a2 are formed at different depths (a depression amount and a protrusion amount) along the longitudinal direction of the key 142.

A portion other than the key groove 142b1 (or the key groove 142b2) (for example, an unprocessed side surface 142s1 constituting the key 142) is disposed between the side surfaces 142bs1 of the key groove 142b1 aligned in the longitudinal direction (or the side surface 142bs2 of the key groove 142b2). (Or part of the side surface 142s2) may be included, and part of the side surfaces 142s1, 142s2 of the key 142 other than the keyway 142b may also be used as a key code. The same applies to other examples and modifications of the present specification.

When the key 142 is inserted, the first key sense portion 132f of the inner tumbler 132 is pressed by the side surface 142bs1 (the concave portion 142a1 or the convex portion 142a2) of the key groove 142b1, or the side surface 142s1 of the key 142, and the inner tumbler 132 is inserted. The second key sense portion 132g is pressed by the side surface 142bs2 (the convex portion 142a2 or the concave portion 142a1) of the key groove 142b2 or the side surface 142s2 of the key 142.

At this time, the inner tumbler 132 is pressed by a part of the key 142 and rotated in the direction of the arrow Q shown in FIG. 14B, and the outer tumbler 134 engaged with the inner tumbler 132 is moved to the position shown in FIG. ) In the direction of arrow R. That is, the plurality of inner tumblers 132 are rotated by a predetermined amount in accordance with the shapes of the key grooves 142b1 and 142b2 or the both side surfaces 142s1 and 142s2 of the key 142, respectively. When the key code of the inserted key 142 matches, the engaging recess 134c of the outer tumbler 134 is moved from the locked position (position shown in FIG. 14A) to the unlocked position (FIG. 14B). Move to the position shown in.

In a state where the engaging recess 134c of the outer tumbler 134 is moved to the unlocked position, the locking bar 138 can engage with the engaging recess 134c of the outer tumbler 134. By slightly rotating 114, the locking bar 138 descends against the urging force of the spring, moves out of the locking bar accommodating portion 112a of the outer cylinder 112, and moves into the divider plate 118b. Therefore, the inner cylinder 114 can be rotated relative to the outer cylinder 112, and the cylinder lock 100 is unlocked.

As described above, in the cylinder lock 100, the inner tumbler 132 is rotated in a predetermined direction (the arrow Q direction shown in FIG. 14B) by inserting the key 142, but the key 142 is completely inserted into the cylinder lock 100. In this state, the first key sense portion 132f of the inner tumbler 132 abuts on the side surface 142bs1 of the key groove 142b1 (or the side surface 142s1 of the key 142), and the second key sense portion 132g is in contact with the side surface 142bs2 of the key groove 142b2 ( Alternatively, since the inner tumbler 132 is in contact with the side surface 142s2) of the key 142, the rotation of the inner tumbler 132 in a predetermined direction is restricted by the key 142, and the rotation in the direction opposite to the predetermined direction is also restricted.

In the unlocked state, when the inner tumbler 132 is in the position shown in FIG. 5A, the left and right inner walls (first key sense portions) of the inner tumbler 132 are shown in FIG. 132f and the second key sense portion 132g) abut against a part of the key 142 (for example, the side surface 142bs1 of the key groove 142b1 and the side surface 142bs2 of the key groove 142b2), and the inner tumbler 132 is in a predetermined direction by the key grooves 142b1 and 142b2. And the rotation in the direction opposite to the predetermined direction is also restricted.

With such a configuration, in the cylinder lock 100, when the key 142 is inserted, the inner tumbler 132 does not rotate more than expected, and the inner tumbler 132 and the outer tumbler 134 are unlocked accurately and quickly. Can be moved to.

FIG. 15 is a view for explaining a cylinder lock 200 according to Modification 4. FIGS. 15A and 15B are cross-sectional views of the cylinder lock 200 as viewed from the inner cylinder tail side. (C) is a schematic top view of the key 242 and the inner tumbler 232 showing a state in which the key 242 with the matching key code is inserted into the cylinder lock 200. FIG.

As shown in FIG. 6A, a cylinder lock 200 according to the fourth modification includes a frame-shaped inner tumbler 232 that is rotatably supported by a support portion 218b1 that protrudes from the lower end of a divider plate 218b. The disc-shaped outer tumbler 234 is disposed above the inner tumbler 232 so as to be able to mesh with the inner tumbler 232, and the plurality of outer tumblers 234 are rotatably supported and can be slid in the axial direction on the plurality of divider plates 218b. A bar-shaped tumbler support shaft 236 and a bar-shaped locking bar 238 disposed above the plurality of divider plates 218b and biased upward (on the outer cylinder 212 side) by a spring (not shown). Configured. The inner tumbler 232 is biased in the direction of the locking position (in the direction of arrow S in FIG. 15) by a biasing means such as a leaf spring (not shown), but this leaf spring may not be provided.

The inner tumbler 232 is formed below the main body 232a, a frame-shaped main body 232a, a plurality of external teeth 232b that are formed above the main body 232a, and mesh with the external teeth 234b of the outer tumbler 234. An engagement recess 232c that engages with the support portion 218b1 of the divider plate 218b, a key insertion hole 232e formed of an opening formed in a substantially rectangular shape inside the main body 232a, and an upper wall of the key insertion hole 232e The key sense part 232h is formed so as to protrude inward from the side surface (upper side wall). The key insertion hole 232e is opened in a shape that at least partially coincides with the key insertion hole 218c of the divider plate 218b.

The locked state shown in FIG. 15A is a state in which the key 242 is not inserted into the key insertion hole 232e of the inner tumbler 232, and only a biasing force such as a leaf spring is applied to the inner tumbler 232. is there.

In this state, the inner tumbler 232 is rotated in the direction of arrow S shown in FIG. 15A by the urging force, and the outer tumbler 234 engaged with the inner tumbler 232 moves to the arrow T shown in FIG. Rotated in the direction. By the rotation of the outer tumbler 234, the engaging recess 234c of the outer tumbler 234 moves from the unlocked position (position shown in FIG. 15 (b)) to the locked position (position shown in FIG. 15 (a)).

In a state where the engagement recess 234c of the outer tumbler 234 is moved to the locking position, the locking bar 238 cannot be engaged with the engagement recess 234c, and is completely retracted from the locking bar accommodating portion 212a of the outer cylinder 212. Can not do it. For this reason, the locking bar 238 is in a state straddling the divider plate 218b and the outer cylinder 212, the inner cylinder 214 cannot rotate relative to the outer cylinder 212, and the cylinder lock 200 is in a locked state.

On the other hand, in the unlocked state shown in FIG. 15B, a key 242 (indicated here by hatching) whose key code matches is inserted into the key insertion hole 232e of the inner tumbler 232, and the inner tumbler 232 is released from the urging means. It is in a state of rotating against the urging force.

As shown in FIG. 15C, a key groove 242b capable of accommodating the key sense portion 232h is carved on the upper surface 242a of the key 242 (the end surface in the thickness direction of the key 242). The key groove 242b is engraved so as to meander at random from one side to the other side in the longitudinal direction of the key 242 corresponding to the key code, and its width W1 is the width of the key sense portion 232h of the inner tumbler 232 Is almost the same. The key groove 242b is formed by cutting a portion other than the end face (side surfaces 242s1, 242s2) in the short direction of the key 242 in a line shape along the longitudinal direction of the key 242 with, for example, a cutting tool or the like. A surface (for example, the left side surface (side wall) 242b1) and a second surface (for example, the right side surface (side wall) 242b2) are formed. In this case, the first surface (side surface 242b1) and the second surface (side surface 242b2) are both surfaces constituting one key groove 242b. In addition, the key groove is engraved so that the formation depth of the key 142 in the longitudinal direction does not substantially change, and the groove formation position in the lateral direction changes from side to side along the longitudinal direction. The key groove 142b is provided on the upper surface 242a (the inner surface of the key 242) different from the side surfaces 242s1 and 242s2 (the outer surface of the key 242) of the key 242.

The key sense part 232h enters the key groove 242b when the key 242 is inserted into the key insertion hole 232e. That is, each of the plurality of inner tumblers 232 is moved in the left-right direction (in the direction of arrow S in FIG. 5A and in the direction of arrow U in FIG. 4B) along the key groove 242b with the insertion or withdrawal of the key 242. It is swung.

Further, the outer tumbler 234 engaged with the inner tumbler 232 is rotated in the direction of arrow T shown in FIG. 5A or the direction of arrow V shown in FIG. When the key code of the inserted key 242 matches, the engaging recess 234c of the outer tumbler 234 is moved from the locked position (position shown in FIG. 15A) to the unlocked position (FIG. 15B). Move to the position shown in.

In a state where the engagement recess 234c of the outer tumbler 234 is moved to the unlocked position, the locking bar 238 can engage with the engagement recess 234c of the outer tumbler 234. By slightly rotating 214, the locking bar 238 descends against the urging force of the spring, moves out of the locking bar accommodating portion 212a of the outer cylinder 212, and moves into the divider plate 218b. For this reason, the inner cylinder 214 can rotate relative to the outer cylinder 212, and the cylinder lock 200 is unlocked.

As described above, in the cylinder lock 200, the inner tumbler 232 rotates to the left and right by inserting the key 242. However, when the key 242 is completely inserted into the cylinder lock 200, the key sense portion 232h has the same degree. The key groove 242b having the width W1 is entered. One end portion (for example, the left end portion) of the key sense portion 232h abuts on a first surface (for example, the left side surface 242b1) constituting the key groove 242b, and the other end portion ( For example, the right end portion is in contact with the second surface (the right side surface 242b2) constituting the key groove 242b. As a result, the inner tumbler 232 is restricted from turning in a predetermined direction by the key groove 242b of the key 242 and is also restricted from turning in the direction opposite to the predetermined direction.

The same applies to the case where the inner tumbler 232 is in the position shown in FIG. That is, as shown by a broken line in FIG. 5A, the key sense portion 232h abuts on both side surfaces constituting the key groove 242b, and the inner tumbler 232 is restricted from rotating in a predetermined direction by the key groove 242b of the key 242. In addition, the rotation in the direction opposite to the predetermined direction is also restricted.

With such a configuration, in the cylinder lock 200, when the key 242 is inserted, the inner tumbler 232 does not rotate more than expected, and the inner tumbler 232 and the outer tumbler 234 are unlocked accurately and quickly. Can be moved to.

FIG. 16 is a view for explaining a cylinder lock 300 according to the modified example 5. FIGS. 16A and 16B are cross-sectional views of the cylinder lock 300 as viewed from the inner cylinder tail side. (C) is a schematic view of the lower surface of the key 342 and the inner tumbler 332 showing a state in which the key 342 whose key code matches is inserted into the cylinder lock 300.

Modified example 5 is the same as modified example 4 except that the formation position of the key sense part 232h in modified example 4 is different, and a part of the description of the configuration overlapping with modified example 4 will be omitted. The cylinder lock 300 includes a divider plate 318b having a support portion 318b1 and a key insertion hole 318c, an inner tumbler 332, an outer tumbler 334, a tumbler support shaft 336, and a locking bar 338. The inner tumbler 332 is urged in the direction of the locking position (in the direction of arrow W in FIG. 16) by an urging means such as a leaf spring (not shown), but this leaf spring may not be provided.

The inner tumbler 332 includes a main body 332a, a plurality of outer teeth 332b that mesh with the outer teeth 334b of the outer tumbler 334, an engagement recess 332c, a key insertion hole 332e, and a key sense portion 332h. It is configured.

As shown in FIG. 16 (a), the key sense portion 332h in the modified example 5 is formed to project inward from the side surface (lower side wall) below the inner wall of the key insertion hole 332e of the inner tumbler 332. Further, as shown in FIG. 3C, a key groove 342b is engraved on the lower surface 342a of the key 342 so as to meander randomly from one side in the longitudinal direction of the key 342 to the other end. The width W2 of the key groove 342b is substantially the same as the width of the key sense part 332h.

The locked state shown in FIG. 16A is a state where the key 342 is not inserted into the key insertion hole 332e of the inner tumbler 332, and only the urging force such as a leaf spring is applied to the inner tumbler 332. is there.

In this state, since the outer tumbler 334 meshing with the inner tumbler 332 is in the locking position, the locking bar 338 cannot be completely retracted from the locking bar accommodating portion 312a of the outer cylinder 312. For this reason, the locking bar 338 is in a state straddling the divider plate 318b and the outer cylinder 312, the inner cylinder 314 cannot rotate relative to the outer cylinder 312, and the cylinder lock 300 is in a locked state.

On the other hand, in the unlocked state shown in FIG. 16B, the key 342 whose key code matches with the key insertion hole 332e of the inner tumbler 332 is inserted, and the inner tumbler 332 resists the biasing force of the biasing means. It is in a state of rotating in the direction.

In the cylinder lock 300, when the key 342 is completely inserted into the cylinder lock 300, the key sense portion 332h enters the key groove 342b and the two surfaces constituting one key groove 342b, as in the fourth modification. Abut. As an example, in the state shown in FIG. 5B, the left side surface of the key sense portion 332h abuts on the left side surface 342b1 of the key groove 342b, and the right side surface of the key sense portion 332h is the right side surface 342b2 of the key groove 342b. Abut. Thereby, the inner tumbler 332 is restricted from rotating in a predetermined direction by the key groove 342b, and is also restricted from rotating in a direction opposite to the predetermined direction.

In the unlocked state, even when the inner tumbler 332 is located at the position shown in FIG. 10A, both side surfaces of the key sense portion 332h have one key groove 342b as shown by the broken line in FIG. Abut against the two side surfaces constituting the.

With such a configuration, in the cylinder lock 300, when the key 342 is inserted, the inner tumbler 332 and the outer tumbler 334 are accurately and quickly unlocked without causing the inner tumbler 332 to rotate more than expected. Can be moved to.

FIG. 17 is a view for explaining a cylinder lock 400 according to Modification 6. FIGS. 17A and 17B are cross-sectional views of the cylinder lock 400 viewed from the inner cylinder tail side. (C) is a schematic top view of the key 442 and the inner tumbler 432 showing a state in which the key 442 whose key code matches is inserted into the cylinder lock 400.

As shown in FIG. 6A, the cylinder lock 400 according to the modified example 6 is formed with a divider plate 418b in which a key insertion hole 418c is formed from the lower center and a lower part in the center of the divider plate 418b. An inner tumbler 432 rotatably supported by the support portion 418b1, a substantially disk-shaped outer tumbler 434 disposed so as to be able to mesh with the inner tumbler 432, and a plurality of outer tumblers 434 can be rotated. The rod-shaped tumbler support shaft 436 that is slidably arranged in the axial direction on the plurality of divider plates 418b and the plurality of divider plates 418b are arranged above the plurality of divider plates 418b and moved upward (on the outer cylinder 412 side) by a spring (not shown). ) And a bar-shaped locking bar 438 urged by (). The inner tumbler 432 is urged in the direction of the locking position (the direction of arrow a in FIG. 17) by an urging means such as a leaf spring (not shown), but this leaf spring may not be provided.

The inner tumbler 432 is formed in a substantially fan-shaped main body portion 432a, a plurality of outer teeth 432b that are formed on the arc-shaped portion of the main body portion 432a, and meshes with the outer teeth 434b of the outer tumbler 434, and the lower center of the main body portion 432a. An engagement portion 432c that is formed (near the central angle) and engages with the support portion 418b1 of the divider plate 418b, a first key sense portion 432f that is formed in a substantially triangular shape at both ends of the main body portion 432a, and a second And a key sense unit 432g.

The locked state shown in FIG. 17A is a state in which the key 442 is not inserted into the key insertion hole 418c of the divider plate 418b, and only a biasing force such as a leaf spring (not shown) is applied to the inner tumbler 432. It is in a state.

In this state, the inner tumbler 432 is rotated in the direction of arrow a shown in FIG. 17A by the urging force of the leaf spring, and the outer tumbler 434 engaged with the inner tumbler 432 is shown in FIG. It is rotated in the direction of the arrow b shown. By the rotation of the outer tumbler 434, the engaging recess 434c of the outer tumbler 434 moves from the unlocked position (position shown in FIG. 17B) to the locked position (position shown in FIG. 17A).

When the engaging recess 434c of the outer tumbler 434 is moved to the locking position, the locking bar 438 cannot be engaged with the engaging recess 434c and completely retracts from the locking bar receiving portion 412a of the outer cylinder 412. Can not do it. For this reason, the locking bar 438 is in a state straddling the divide plate 418b and the outer cylinder 412, the inner cylinder 414 cannot rotate relative to the outer cylinder 412, and the cylinder lock 400 is locked.

On the other hand, in the unlocked state shown in FIG. 17B, a key 442 (indicated here by hatching) whose key code matches is inserted into the key insertion hole 418c of the divider plate 418b, and the inner tumbler 432 is moved from the urging means. It is in a state of rotating in the direction of the arrow c against the urging force.

As shown in FIG. 17C, a key groove 442b is provided on one end face in the thickness direction of the key 442 (here, the upper surface 442a perpendicular to the thickness direction of the key 442). The key grooves 442b are a plurality of independent recesses arranged at predetermined intervals along the longitudinal direction of the key 442, and are engraved so as to be distributed on both sides of the longitudinal center line of the key 442 corresponding to the key code. ing. The key groove 442b has a mortar shape in which the opening 442b1 is large and the bottom 442b2 is small so that the first key sense part 432f or the second key sense part 432g can be accommodated, and the diameter W3 of the bottom part 442b2 is The width is approximately the same as the width of the tips of the first key sense part 432f and the second key sense part 432g.

Further, the diameter W4 of the opening 442b1 can be selected from a plurality of lengths (here, three stages of diameter sizes) as indicated by a solid line or a broken line in FIG. Due to the difference in the diameter W4 of the opening 442b1, the amount of entry (the depth of entry) of the first key sense portion 432f and the second key sense portion 432g into the key groove 442b changes. That is, the key groove 442b having a different diameter W4 of the opening 442b1 has a different depth at the bottom 442b2. In this modification, the key groove 442b is provided so that the depth of the groove changes along the longitudinal direction of the key 442. Therefore, when the inner tumbler 432 is rotated so as to contact the bottom portion 442b2, the amount of rotation differs.

Referring to FIG. 17B again, the second key sense unit 432g enters the key groove 442b when the key 442 is inserted into the key insertion hole 418c of the divider plate 418b. In other words, each of the plurality of inner tumblers 432 moves in the left-right direction (the direction of arrow a in FIG. 5A and the direction of arrow c in FIG. 5B) along the key groove 442b with the insertion or withdrawal of the key 442. It is swung.

Also, the outer tumbler 434 engaged with the inner tumbler 432 is rotated in the direction of the arrow b shown in FIG. 5A or the direction of the arrow d shown in FIG. When the key code of the inserted key 442 matches, the engaging recess 434c of the outer tumbler 434 is moved from the locked position (position shown in FIG. 17A) to the unlocked position (FIG. 17B). Move to the position shown in.

In a state where the engagement recess 434c of the outer tumbler 434 is moved to the unlocked position, the locking bar 438 can engage with the engagement recess 434c of the outer tumbler 434. Therefore, the key 442 is turned to turn the inner cylinder By slightly rotating 414, the locking bar 438 descends against the urging force of the spring, moves out of the locking bar accommodating portion 412a of the outer cylinder 412, and moves into the divider plate 418b. For this reason, the inner cylinder 414 can be rotated relative to the outer cylinder 412, and the cylinder lock 400 is unlocked.

Thus, in the cylinder lock 400, the inner tumbler 432 rotates to the left and right by inserting the key 442, but when the key 442 is completely inserted into the cylinder lock 400, one key of the inner tumbler 432 is inserted. The sense part enters the key groove 442b and comes into contact with a surface (bottom part 442b2) constituting the key groove 442b, and the other key sense part of the inner tumbler 432 is a part other than the key groove 442b (an upper surface constituting the key 442). 442a). As an example, in the state shown in FIG. 5B, the first key sense portion 432f contacts the bottom (bottom surface) 442b2 of the key groove 442b, and the second key sense portion 432g contacts the top surface 442a of the key 442. As a result, the inner tumbler 432 is restricted from rotating in a predetermined direction by the key groove 442b, and is also restricted from rotating in the direction opposite to the predetermined direction by the upper surface 442a of the key 442.

When the inner tumbler 432 is in the position shown in FIG. 5A in the unlocked state, the second key sense part 432g is connected to the bottom 442b2 of the key groove 442b as shown by the broken line in FIG. And the first key sense portion 432f contacts the upper surface 442a of the key 442.

With such a configuration, in the cylinder lock 400, when the key 442 is inserted, the inner tumbler 432 does not rotate more than expected, and the inner tumbler 432 and the outer tumbler 434 are accurately and quickly unlocked. Can be moved to.

In this modification, the case where the first key sense portion 432f or the second key sense portion 432g contacts the upper surface 442a of the key 442 that is a portion other than the key groove 442b has been described. However, the present invention is not limited to this, and other key grooves that are shallow at a line-symmetrical position of the key groove 442b (position where the first and second

key sense portions

432f and 432g abut) with the center line along the longitudinal direction of the key 442 as the center. May be formed. In this case, a plurality of key grooves are provided on the same upper surface 442a of the key 442, and the rotation of the inner tumbler 432 in a predetermined direction is restricted by one key groove, and the opposite direction to the predetermined direction is controlled by the other key groove. The rotation is also restricted.

FIG. 18 is a view for explaining a cylinder lock 500 according to Modification 7. FIGS. 18A and 18B are cross-sectional views of the cylinder lock 500 viewed from the inner cylinder tail side. (C) is a schematic view of the bottom surface of the key 542 and the inner tumbler 532, showing a state in which the key 542 with the matching key code is inserted into the cylinder lock 500, and (d) in FIG. It is an arrow view (side view) from a direction.

The cylinder lock 500 of the modification 7 has the same configuration as that of the modification 3 shown in FIG. 14 except that the outer shape of the key 542 is different, and a part of the description of the configuration overlapping the modification 3 is omitted. explain. The cylinder lock 500 includes a divider plate 518b having a support portion 518b1 and a key insertion hole 518c, an inner tumbler 532, an outer tumbler 534, a tumbler support shaft 536, a locking bar 538, and a leaf spring 541. Configured.

The inner tumbler 532 includes a main body 532a, a plurality of outer teeth 532b that mesh with the outer teeth 534a of the outer tumbler 534, an engaging recess 532c, a key insertion hole 532e, a first key sense portion 532f, 2 key sense part 532g.

18A is a state where the key 542 is not inserted into the key insertion hole 532e of the inner tumbler 532 and only the urging force from the leaf spring 541 is applied to the inner tumbler 532.

In this state, the inner tumbler 532 is rotated in the direction of arrow e shown in FIG. 18 (a), and the outer tumbler 534 is rotated in the direction of arrow f shown in FIG. 18 (a). As a result, the engaging recess 534c of the outer tumbler 534 moves from the unlocked position (position shown in FIG. 18 (b)) to the locked position (position shown in FIG. 18 (a)).

In a state where the engaging recess 534c is moved to the locking position, the locking bar 538 is in a state straddling the divider plate 518b and the outer cylinder 512, and the inner cylinder 514 can rotate relative to the outer cylinder 112. First, the cylinder lock 500 is locked.

On the other hand, in the unlocked state shown in FIG. 18B, a key 542 (indicated here by hatching) whose key code matches with the key insertion hole 532e of the inner tumbler 532 is inserted, and the inner tumbler 532 is moved from the leaf spring 541. It is in a state of rotating against the urging force.

As shown in FIGS. 18C and 18D, the key 542 has key grooves 542b1 and 542b2.

The key groove 542b1 is formed by cutting one end surface (side surface 542s1) in the short side direction (width direction) of the key 542 in a blank key state, and is inclined to protrude from the lower surface 542a1 toward the upper surface 542a2. 1 surface (side surface 542bs1). The key groove 542b2 is formed by cutting the other end surface (side surface 542s2) in the short side direction (width direction) of the key 542 in a blank key state, and is inclined so as to protrude from the lower surface 542a1 toward the upper surface 542a2. The second surface (side surface 542bs2) is provided. That is, the first surface (side surface 542bs1) is a surface constituting one key groove 542b1, and the second surface (other side surface 542bs2) is a surface constituting another key groove 542b2. In addition, it can be said that both the first surface and the second surface constitute an end surface of the key 542 in the width direction. The inclined side surfaces 542bs1 and 542bs2 are formed corresponding to the key code, and the formation positions thereof are a plurality of steps (here, four steps on one side and eight steps on both sides) as shown by the broken line in FIG. It is possible to select from. That is, at least a part of the key grooves 542b1 and 542b2 have different depths (formation positions) along the longitudinal direction of the key 542. Further, when a part of the unprocessed side surface 542s1 of the key 542 is included between the side surfaces 542bs1 of the key grooves 542b1 aligned in the longitudinal direction, or between the side surfaces bs2 of the key grooves 542b2 aligned in the longitudinal direction. A part of the raw side surface 542s2 to be configured may be included, and the raw side surfaces 542s1 and 542s2 (a part of the key 542) may be used as a key code.

When the key 542 is inserted, the first key sense portion 532f of the inner tumbler 532 is pressed by the side surface 542bs1 of the key groove 542b1 or the side surface 542s1 of the key 542, and the second key sense portion 532g is pressed by the side surface of the key groove 542b2. It is pressed by 542bs2 or the side surface 542s2 of the key 542.

At this time, the inner tumbler 132 is pressed by the key 142 and rotated in the direction of the arrow g shown in FIG. 18B, and the outer tumbler 534 engaged with the inner tumbler 532 is shown in FIG. 18B. It is rotated in the direction of arrow h. That is, the plurality of inner tumblers 532 rotate by a predetermined amount in accordance with the positions of the key grooves 542b1 and 542b2 or the both side surfaces 542s1 and 542s2 of the key 542, respectively. When the key code of the inserted key 542 matches, the engagement recess 534c of the outer tumbler 534 is moved from the locked position (position shown in FIG. 18A) to the unlocked position (FIG. 18B). Move to the position shown in.

With the engaging recess 534c of the outer tumbler 534 moved to the unlocked position, the key 542 is turned to slightly rotate the inner cylinder 514, whereby the locking bar 538 is lowered against the spring biasing force, Move into the divide plate 518b. For this reason, the inner cylinder 514 can rotate relative to the outer cylinder 512, and the cylinder lock 500 is unlocked.

As described above, in the cylinder lock 500, in a state where the key 542 is completely inserted into the cylinder lock 500, the first key sense portion 532f of the inner tumbler 532 has the side surface (first key groove) 542b1. 542bs1 or the side surface 542s1 of the key 542, and the second key sense portion 532g is placed on the side surface (second surface) 542bs2 of the key groove (second key groove) 542b2, or the side surface 542s2 of the key 542. Because of the contact, the inner tumbler 532 is restricted from rotating in a predetermined direction by the key 542 and is also restricted from rotating in a direction opposite to the predetermined direction.

In the unlocked state, when the inner tumbler 532 is in the position shown in FIG. 5A, the left and right inner walls (first key sense portions) of the inner tumbler 532 are shown as indicated by broken lines in FIG. 532f and the second key sense unit 532g) abut against a part of the key 542 (for example, the side surfaces 542bs1, 542bs2), and the inner tumbler 532 is restricted from rotating in a predetermined direction by the key 542, and is opposite to the predetermined direction. Directional rotation is also restricted.

With such a configuration, in the cylinder lock 500, when the key 542 is inserted, the inner tumbler 532 does not rotate more than expected, and the inner tumbler 532 and the outer tumbler 534 are accurately and quickly unlocked. Can be moved to.

FIG. 19 is a view for explaining a cylinder lock 700 according to Modification 8. FIGS. 19A and 19B are cross-sectional views of the cylinder lock 700 viewed from the inner cylinder tail side. FIG. 6C is a schematic top view of the key 742 and the inner tumbler 732 showing a state in which the key 742 whose key code matches is inserted into the cylinder lock 700.

A cylinder lock 700 according to this modified example 8 includes a divider plate 718b having a key insertion hole 718c near the lower side, and an inner tumbler 732 that is a belt-like body and is slidable in the longitudinal direction (horizontal direction in FIG. 8A). And a disc-shaped outer tumbler 734 disposed so as to be able to mesh with the outer teeth 732b of the inner tumbler 732, and a plurality of outer tumblers 734 rotatably supported by the plurality of divider plates 718b in the axial direction. A rod-shaped tumbler support shaft 736 disposed; and a rod-shaped locking bar 738 disposed above the plurality of divider plates 718b and biased upward (on the outer cylinder 712 side) by a spring (not shown). It is configured. The inner tumbler 732 is urged in the direction of the locking position (in the direction of arrow q in FIG. 19) by an urging means such as a leaf spring (not shown), but this leaf spring may not be provided.

The inner tumbler 732 is formed above the belt-shaped main body 732a, the main body 732a, a plurality of external teeth 732b meshing with the outer teeth 734a of the outer tumbler 734, and a part of the key 742 below the main body 732a. And a key sense portion 732h formed with a recess so as to be engageable.

The locked state shown in FIG. 19A is a state in which the key 742 is not inserted into the key insertion hole 718c of the divider plate 718b, and only an urging force such as a leaf spring (not shown) is applied to the inner tumbler 732. It is in a state.

In this state, the inner tumbler 732 is moved in the right direction (arrow q direction) shown in FIG. 19A by the urging force, and the outer tumbler 734 engaged with the inner tumbler 732 is moved to the arrow r shown in FIG. Rotated in the direction. By the rotation of the outer tumbler 734, the engaging recess 734c of the outer tumbler 734 moves from the unlocked position (position shown in FIG. 19B) to the locked position (position shown in FIG. 19A).

In a state where the engaging recess 734c is moved to the locking position, the locking bar 738 cannot be engaged with the engaging recess 734c and cannot be completely retracted from the locking bar accommodating portion 712a of the outer cylinder 712. . For this reason, the locking bar 738 is in a state straddling the divide plate 718b and the outer cylinder 712, the inner cylinder 714 cannot rotate relative to the outer cylinder 712, and the cylinder lock 700 is locked.

On the other hand, in the unlocked state shown in FIG. 19B, a key 742 (indicated by hatching here) whose key code matches is inserted into the key insertion hole 718c of the cylinder lock 700, and the inner tumbler 732 is attached to the biasing means. It is in a state where it slides in the left direction (the direction of the arrow s shown in FIG. 5B) against the force.

As shown in FIG. 19 (c), the key 742 has key grooves 742b1 and 742b2 made up of a plurality of recesses arranged at predetermined intervals along the longitudinal direction. The key grooves 742b1 and 742b2 are formed to be distributed on both end faces in the thickness direction of the key 742 corresponding to the key code. The key groove 742b1 is obtained by cutting one end surface (side surface 742s1) in the thickness direction of the key 742, and has a first surface (side surface 742bs1). The key groove 742b2 is obtained by cutting the other end surface (side surface 742s2) in the thickness direction of the key 742, and the key groove 742b2 has a second surface (side surface 742bs2). That is, the first surface (side surface 742bs1) is a surface constituting one key groove 742b1, and the second surface (other side surface 742bs2) is a surface constituting another key groove 742b2. It can also be said that both the first surface and the second surface constitute an end surface in the thickness direction of the key 742.

The key grooves 742b1 and 742b2 are engraved so that the groove formation position changes from side to side along the longitudinal direction. As shown in FIGS. 4A and 4B, the key grooves 742b1 and 742b2 have a trapezoidal cross section, and the portion where the key grooves 742b1 and 742b2 are provided is thicker than the other portions of the key 742. Is a small thin portion 742c. At least a part of the key grooves 742b1 and 742b2 have different depths along the longitudinal direction of the key 742. That is, at least some of the

thin portions

742c and 742c ′ have different thicknesses W7 and W7 ′. The thickness width W7 of the thin portion 742c and the thickness W7 ′) of the thin portion 742c ′ are substantially the same as the widths of the

key sense portions

732h and 732h ′ with which they abut.

When the key 742 is inserted into the key insertion hole 718c of the divider plate 718b, the thin portion 742c of the key 742 enters the concave key sense portion 732h. That is, the inner tumbler 732 is slid in the left-right direction along the key grooves 742b1 and 742b2 (thin portions 742c) as the key 742 is inserted or withdrawn.

When the inner tumbler 732 is moved to the right, the outer tumbler 734 engaged with the inner tumbler 732 is rotated in the direction of the arrow r shown in FIG. When the inner tumbler 732 is moved to the left, the outer tumbler 734 engaged with the inner tumbler 732 is rotated in the direction of the arrow t shown in FIG.

When the key code of the inserted key 742 matches, the engaging recess 734c of the outer tumbler 734 is moved from the locked position (position shown in FIG. 19A) to the unlocked position (FIG. 19B). Move to the position shown in.

Since the locking bar 738 can be engaged with the engagement recess 734c in a state where the engagement recess 734c is moved to the unlocked position, the key 742 is rotated to slightly rotate the inner cylinder 714. The locking bar 738 descends against the urging force of the spring, moves out of the locking bar accommodating portion 712a of the outer cylinder 712, and moves into the divider plate 718b. For this reason, the inner cylinder 714 can be rotated relative to the outer cylinder 712, and the cylinder lock 700 is unlocked.

Thus, in the cylinder lock 700, the inner tumbler 732 slides left and right (horizontal movement) by inserting the key 742. In the state where the key 742 is completely inserted into the cylinder lock 700, the thin portion 742c of the key 742 enters the key sense portion 732h and the end surface in the thickness direction of the thin portion 742c is shown in FIG. 742s1 ′ (or side surface 742s1) and the end surface 742s2 ′ in the thickness direction of the thin portion 742c abut against both side walls of the key sense portion 732h. Alternatively, the end surface 742s1 ′ (or side surface 742s1) in the thickness direction of the thin-walled portion 742c and the side surface 742bs2 constituting the key groove 742b2 are in contact with both side walls of the key sense portion 732h.

From another viewpoint, the side surface 742s1 of the key 742 between the key grooves 742b1 and the side surface 742s2 of the key 742 between the key grooves 742b2 can also be said to be part of the key groove. That is, the key 742 of this modification has a first key groove 742b1 having a concave and convex shape that is continuous in the longitudinal direction on the side surface 742s1, and a second key groove 742b2 that is continuous in the longitudinal direction on the side surface 742s2. . In this case, the first side surface 742bs1 of the first key groove 742b1 and the second side surface 742bs2 of the second key groove 742b2 are in contact with both side walls of the key sense portion 732h.

Thereby, the rotation of the inner tumbler 732 in a predetermined direction is restricted by the key 742 (key groove 742b), and the rotation in the direction opposite to the predetermined direction is also restricted.

Even when the inner tumbler 732 is in the position shown in FIG. 6A in the unlocked state, both side surfaces of the key sense portion 732h are on both sides of the thin portion 742c as shown by the broken lines in FIG. It abuts on the surface (or the side surface of the thin portion 742c and the side surface of the key groove).

With such a configuration, in the cylinder lock 700, when the key 742 is inserted, the inner tumbler 732 does not rotate more than expected, and the inner tumbler 732 and the outer tumbler 734 are accurately and quickly unlocked. Can be moved to.

FIG. 20 is a view for explaining a cylinder lock 800 according to Modification 9. FIGS. 20A and 20B are cross-sectional views of the cylinder lock 800 as viewed from the inner cylinder tail side. (C) is a schematic top view of the key 842 and the inner tumbler 832 showing a state in which the key 842 with the matching key code is inserted into the cylinder lock 800. FIG.

A cylinder lock 800 according to this modified example 9 includes a divider plate 818b having a key insertion hole 818c from the lower center and an inner tumbler that is a belt-like body and is slidable in the longitudinal direction (horizontal direction in FIG. 832, a disk-shaped outer tumbler 834 disposed so as to be able to mesh with the outer teeth 832b of the inner tumbler 832, and a plurality of outer tumblers 834 rotatably supported by the plurality of divider plates 818b in the axial direction. A bar-shaped tumbler support shaft 836 and a bar-shaped locking bar 838 disposed above the plurality of divider plates 818b and biased upward (on the outer cylinder 812 side) by a spring (not shown). Configured. The inner tumbler 832 is urged in the direction of the locking position (in the direction of arrow aa in FIG. 20) by an urging means such as a leaf spring (not shown), but this leaf spring may not be provided.

The inner tumbler 832 is formed in a band-shaped main body portion 832a, a plurality of outer teeth 832b that engage with the outer teeth 834a of the outer tumbler 834, and a key insertion of the divider plate 818b from below the main body portion 832a. And a key sense portion 832h that protrudes toward the hole 818c.

The locked state shown in FIG. 20A is a state in which the key 842 is not inserted into the key insertion hole 818c of the divider plate 818b, and only an urging force such as a leaf spring (not shown) is applied to the inner tumbler 832. It is in a state.

In this state, the inner tumbler 832 is moved in the right direction (arrow aa direction) shown in FIG. 20A by the urging force, and the outer tumbler 834 engaged with the inner tumbler 832 is moved to the arrow bb shown in FIG. Rotated in the direction. By the rotation of the outer tumbler 834, the engaging recess 834c of the outer tumbler 834 moves from the unlocked position (position shown in FIG. 20B) to the locked position (position shown in FIG. 20A).

In a state where the engaging recess 834c is moved to the locking position, the locking bar 838 cannot be engaged with the engaging recess 834c and cannot be completely retracted from the locking bar receiving portion 812a of the outer cylinder 812. . For this reason, the locking bar 838 is in a state straddling the divide plate 818b and the outer cylinder 812, the inner cylinder 814 cannot rotate relative to the outer cylinder 812, and the cylinder lock 800 is in a locked state.

On the other hand, in the unlocked state shown in FIG. 20B, a key 842 (indicated here by hatching) whose key code matches is inserted into the key insertion hole 818c of the cylinder lock 800, and the inner tumbler 832 is released from the urging means. It is in a state of sliding leftward (in the direction of the arrow cc shown in FIG. 5B) against the urging force.

As shown in FIG. 20 (c), a key groove 842b is carved on one end surface (upper surface 842a) of the key 842 in the thickness direction. The key groove 842b is engraved so as to meander at random from one side to the other side in the longitudinal direction of the key 842 corresponding to the key code, and its width W8 is substantially the same as the width of the key sense portion 832h. is there. The key groove 842b is formed by cutting a portion other than the end face (side surfaces 842s1, 842s2) in the short direction of the key 842 into a line shape along the longitudinal direction of the key 842 with, for example, a cutting tool or the like. A surface (side surface 842b1 of the groove) and a second surface (side surface 842b2 of the groove) are formed. In this case, the first surface (groove side surface 842b1) and the second surface (groove side surface 842b2) are both surfaces constituting one key groove 842b. The key groove 842b is engraved so that the formation depth of the key 842 in the longitudinal direction does not substantially change, and the groove formation position in the lateral direction changes from side to side along the longitudinal direction.

The key sense portion 832h enters the key groove 842b when the key 842 is inserted into the key insertion hole 818c of the cylinder lock 800. That is, the plurality of inner tumblers 832 are slid in the left-right direction along the key groove 842b as the key 842 is inserted or withdrawn.

When the inner tumbler 832 is moved to the right, the outer tumbler 834 meshing with the inner tumbler 832 is rotated in the direction of the arrow bb shown in FIG. 9A, and when the inner tumbler 832 is moved to the left, The outer tumbler 834 engaged with the tumbler 832 is rotated in the direction of the arrow dd shown in FIG.

When the key code of the inserted key 842 matches, the engaging recess 834c of the outer tumbler 834 is moved from the locked position (position shown in FIG. 20A) to the unlocked position (FIG. 20B). Move to the position shown in.

Since the locking bar 838 can be engaged with the engagement recess 834c in a state where the engagement recess 834c is moved to the unlocking position, the key 842 is rotated to slightly rotate the inner cylinder 814. The locking bar 838 descends against the urging force of the spring, moves out of the locking bar accommodating portion 812a of the outer cylinder 812, and moves into the divider plate 818b. Therefore, the inner cylinder 814 can rotate relative to the outer cylinder 812, and the cylinder lock 800 is unlocked.

In this way, in the cylinder lock 800, the inner tumbler 832 slides left and right (horizontal movement) by inserting the key 842. When the key 842 is completely inserted into the cylinder lock 800, the key sense portion 832h enters the key groove 842b, and the side surface (for example, the left side surface) of the key sense portion 832h constitutes the key groove 842b. A second surface (for example, the right side surface (side wall) 842b2) that contacts the surface (for example, the left side surface (side wall) 842b1) and the other side surface (for example, the right side surface) of the key sense portion 832h constitutes the key groove 842b. Abut.

Thereby, the inner tumbler 832 is restricted from rotating in the predetermined direction by the key groove 842b, and is also restricted from rotating in the direction opposite to the predetermined direction.

In the unlocked state, even when the inner tumbler 832 is in the position shown in FIG. 5A, the left side surface of the key sense portion 832h abuts on the left side surface 842b1 of the key groove 842b and the key sense portion 832h The right side surface abuts on the right side surface 842b2 of the key groove 842b. Thereby, the inner tumbler 832 is restricted from rotating in a predetermined direction and in a direction opposite to the predetermined direction.

With such a configuration, in the cylinder lock 800, when the key 842 is inserted, the inner tumbler 832 does not rotate more than expected, and the inner tumbler 832 and the outer tumbler 834 are accurately and quickly unlocked. Can be moved to.

FIG. 21 is a view for explaining a cylinder lock 900 according to the modified example 10, and FIGS. 21 (a) and (b) are cross-sectional views of the cylinder lock 900 as viewed from the inner cylinder tail side. (C) is a schematic view of the lower surface of the key 942 and the inner tumbler 932, showing a state in which the key 942 with the matching key code is inserted into the cylinder lock 900. FIG.

A cylinder lock 900 according to the tenth modification is a divider plate 918b having a key insertion hole from the lower center and a substantially semicircular frame-like body having a curved side surface, and is in the diametrical direction (horizontal direction in FIG. ) Slidable, a disk-shaped outer tumbler 934 arranged to mesh with the outer teeth 932b of the inner tumbler 932, and a plurality of divider plates in a state where a plurality of outer tumblers 934 are rotatably supported. A rod-shaped tumbler support shaft 936 that is slidably disposed in the axial direction on 918b, and a rod-shaped locking member that is disposed above the plurality of divider plates 918b and biased upward (on the outer cylinder 912 side) by a spring (not shown). And a bar 938. The inner tumbler 932 is biased in the direction of the locking position (in the direction of the arrow ee in FIG. 21) by a biasing means such as a leaf spring (not shown), but this leaf spring may not be provided.

The inner tumbler 932 is formed above the main body 932a, a plurality of outer teeth 932b that mesh with the outer teeth 934a of the outer tumbler 934, and a substantially half formed inside the main body 932a. A key insertion hole 932e formed of a circular opening, and a key sense portion 932h formed to project inward (upward) from the key insertion hole 932e below the main body portion 932a. Yes.

The locked state shown in FIG. 21A is a state in which the key 942 is not inserted into the key insertion hole 932e of the inner tumbler 932, and only the urging force such as a leaf spring is applied to the inner tumbler 932. is there.

In this state, the inner tumbler 932 is moved in the right direction (arrow ee direction) shown in FIG. 21A by the urging force, and the outer tumbler 934 engaged with the inner tumbler 932 is moved to the arrow ff shown in FIG. Rotated in the direction. As a result, the engaging recess 934c of the outer tumbler 934 moves from the unlocked position (position shown in FIG. 21 (b)) to the locked position (position shown in FIG. 21 (a)).

In a state where the engaging recess 934c is moved to the locking position, the locking bar 938 cannot be engaged with the engaging recess 934c and cannot be completely retracted from the locking bar accommodating portion 912a of the outer cylinder 912. . For this reason, the locking bar 938 is in a state straddling the divide plate 918b and the outer cylinder 912, the inner cylinder 914 cannot rotate relative to the outer cylinder 912, and the cylinder lock 900 is locked.

On the other hand, in the unlocked state shown in FIG. 21B, a key 942 (shown by hatching) whose key code matches with the key insertion hole 932e of the inner tumbler 932 is inserted, and the inner tumbler 932 is attached to the biasing means. It is a state where it slides in the left direction (arrow gg direction shown in FIG. 4B) against the force.

As shown in FIG. 21 (c), a key groove 942b is formed on one end surface (lower surface 942a) of the key 942 in the thickness direction. The key groove 942b is engraved so as to meander at random from one side to the other side in the longitudinal direction of the key 942 corresponding to the key code, and its width W9 is substantially the same as the width of the key sense portion 932h. is there. The key groove 942b is formed by cutting a portion other than the end face (side surfaces 942s1, 942s2) in the short direction of the key 942 into a line shape along the longitudinal direction of the key 942 with, for example, a cutting tool or the like. A surface (side surface 942b1 of the groove) and a second surface (side surface 942b2 of the groove) are formed. In this case, the first surface (groove side surface 942b1) and the second surface (groove side surface 942b1) are both surfaces constituting one key groove 942b. The key groove 942b is engraved so that the formation depth in the longitudinal direction of the key 942 does not substantially change, and the groove formation position in the lateral direction changes from side to side in the longitudinal direction.

The key sense portion 932h enters the key groove 942b when the key 942 is inserted into the key insertion hole 932e of the inner tumbler 932. That is, the plurality of inner tumblers 932 are slid in the left-right direction along the key groove 942b as the key 942 is inserted or withdrawn.

When the inner tumbler 932 is moved to the left, the outer tumbler 934 engaged with the inner tumbler 932 is rotated in the direction of the arrow hh shown in FIG. When the inner tumbler 932 is moved to the right, the outer tumbler 934 meshing with the inner tumbler 932 is rotated in the direction of the arrow ff shown in FIG.

When the key code of the inserted key 942 matches, the engaging recess 934c of the outer tumbler 934 is moved from the locked position (position shown in FIG. 21A) to the unlocked position (FIG. 21B). Move to the position shown in.

Since the locking bar 938 can be engaged with the engagement recess 934c in a state where the engagement recess 934c is moved to the unlocked position, the key 942 is turned to slightly rotate the inner cylinder 914. The locking bar 938 descends against the urging force of the spring, moves out of the locking bar accommodating portion 912a of the outer cylinder 912, and moves into the divider plate 918b. For this reason, the inner cylinder 914 can rotate relative to the outer cylinder 912, and the cylinder lock 900 is unlocked.

Thus, in the cylinder lock 900, the inner tumbler 932 slides left and right (horizontal movement) by inserting the key 942. When the key 942 is completely inserted into the cylinder lock 900, the key sense portion 932h enters the key groove 942b, and the side surface (for example, the left side surface) of the key sense portion 932h constitutes the first key groove 942b. A second surface (for example, the right side surface (side wall) 942b2) that contacts the surface (for example, the left side surface (side wall) 942b1) and the other side surface (for example, the right side surface) of the key sense portion 932h forms the key groove 942b. Abut. As a result, the inner tumbler 932 is restricted from rotating in a predetermined direction by the key groove 942b, and is also restricted from rotating in a direction opposite to the predetermined direction.

Even when the inner tumbler 932 is in the position shown in FIG. 6A in the unlocked state, both side surfaces of the key sense portion 932h are on both sides of the key groove 942b as shown by the broken line in FIG. It abuts on the surfaces 942b1 and 942b2.

With such a configuration, in the cylinder lock 900, when the key 942 is inserted, the inner tumbler 932 does not rotate more than expected, and the inner tumbler 932 and the outer tumbler 934 are accurately and quickly unlocked. Can be moved to.

In this modification, the key sense portion 942h is formed so as to protrude from the upper side of the main body portion 942a toward the inside of the key insertion hole 932e (downward), and engages with a key groove 942b provided on the upper surface of the key 942. A configuration may be adopted.

The cylinder locks of Modifications 3 to 7 described above can be configured with the same number of parts, and the cylinder locks of Modifications 8 to 10 can also be configured with the same number of parts.

As described above, the cylinder lock of the present invention (for example, the cylinder locks 100 and 200) has an outer cylinder (for example, the outer cylinders 122 and 212) and an inner cylinder (for example, an outer cylinder that can rotate relative to the outer cylinder). For example, the inner cylinders 114 and 214) and at least a rotation position between the locking position for prohibiting relative rotation of the inner cylinder with respect to the outer cylinder and the unlocking position for permitting relative rotation of the inner cylinder with respect to the outer cylinder. One or a plurality of tumblers (eg,

inner tumblers

132, 232, etc.) that are movable, wherein at least one of the tumblers is a key of the cylinder lock ( For example, after the key is rotated in a predetermined direction by the keys 142, 242), both the rotation in the predetermined direction and the rotation in the direction opposite to the predetermined direction are regulated by the key. A lock cylinder.

A cylinder lock (for example, cylinder lock 800) includes an outer cylinder (for example, outer cylinder 812), an inner cylinder (for example, inner cylinder 814) that can rotate relative to the outer cylinder, and the outer cylinder. One or more tumblers (for example, an inner tumbler 832) that can slide at least between a locking position that prohibits relative rotation of the inner cylinder and an unlocking position that allows relative rotation of the inner cylinder with respect to the outer cylinder. And at least one of the tumblers is slid in a predetermined direction by a key (for example, key 842) of the cylinder lock and then slid in the predetermined direction by the key. Further, both of the slide in the opposite direction to the predetermined direction may be restricted.

According to the cylinder lock having such a configuration, when the key is inserted, the tumbler does not rotate more than expected, and the tumbler can be accurately and quickly moved to the unlocked position.

The tumbler includes at least a first tumbler member (for example, the inner tumbler 132) and a second tumbler member (for example, the outer tumbler 134), and includes the first tumbler member and the second tumbler member. The unlocking position of the tumbler may be changeable by changing the engagement position.

Further, at least one of the tumblers (for example, the inner tumbler 132) is restricted from rotating or sliding in the predetermined direction by a part of the key (for example, the keys 142 and 842), and the other of the key. The rotation or sliding in the direction opposite to the predetermined direction is restricted by a part of the key, the key has a key groove (for example,

key grooves

142b, 842b, etc.), and a part of the key is The keyway or a part other than the keyway (for example, a side surface 142s1 of the key 142), and the other part of the key is a part other than the keyway or the keyway (for example, the side surface 142s2 of the key 142). It may be.

Further, the key groove (for example, key grooves 142b1, 142b2, 242 and the like) may be formed on one surface or both surfaces in the short direction or the thickness direction of the key.

Further, a part of the key is a first surface (for example, a side surface 142bs1 of the key groove 142b1, a side surface 242bs1 of the key groove 242b, etc.) constituting the key groove (for example, the key grooves 142b1, 242b, etc.) The other part of the key is a second surface (for example, the side surface 142bs2 of the key groove 142b2, the side surface 242bs2 of the key groove 242b, etc.) constituting the key groove (for example, the key grooves 142b2, 242b, etc.) Also good.

That is, the cylinder lock of the present embodiment has a tumbler (for example, inner tumblers 132, 832) that moves (rotates or slides) in the first direction and the second direction, and at least a part of the tumbler is , After being rotated or slid in a predetermined direction by a key (for example, keys 142 and 842), one end of the tumbler on one side in the moving direction and the other end of the tumbler on the other side are respectively The key groove (for example, key grooves 142b1, 142b2, 842b, etc.) provided in the first end and the other end are in contact with each other, and the rotation or sliding in the predetermined direction is restricted, and the rotation in the direction opposite to the predetermined direction or Both slides are regulated. One end and the other end of the keyway are respectively exposed to the outer surface of the key (provided at both ends in the short side or thickness direction of the key) of the first keyway (for example, the keyway 142b1). It may be the second surface (for example, the side surface 142bs2) of the surface (for example, the side surface 142bs1) and the second keyway (for example, the keyway 142b2), or one keyway ( For example, the first surface (for example, the side surface 842b1) and the second surface (for example, the side surface 842b2) constituting the key groove 842b) may be used.

With such a configuration, the rotation of the tumbler can be restricted only by the keyway of the key used for the locking / unlocking operation, so there is no need to add a new member to restrict the rotation of the tumbler, Miniaturization and cost reduction can be realized.

In the above description, the case where the outer shape of the key is a substantially rectangular parallelepiped shape (the cross-sectional view in the short side direction is a substantially rectangular shape) has been described as an example, but the present invention is not limited thereto, and the key shape may be a cylindrical shape. Moreover, although the case where the key groove is formed in at least a part of the key has been described as an example, the key groove may not be formed in the key.

The cylinder lock according to the present invention can be applied as a lock of a rental apartment or an apartment.

10, 50, 70

Cylinder lock

100, 200, 300, 400, 500

Cylinder lock

600, 700, 800, 900 Cylinder lock 12 Outer cylinder 12b Guide groove 14 Inner cylinder 16 Inner cylinder cap 18 Inner cylinder body

18a Side plate

18b Divide plate 20 Inner cylinder tail 30 Locking and unlocking mechanism 32 Inner tumbler 32a Main body portion 32b External teeth 32c Engaging recess 32d Engaging protrusion 32e Key insertion hole 32f First key sense portion 32g Second key sense portion 34 Outer tumbler 34a Main body portion

34b Outside Teeth

34c Engaging recess 36 Tumbler support shaft 38 Locking bar 40 Key code changing mechanism 41 Leaf spring 42 Key 44 Lock plate 46 Slide plate

Claims

An outer cylinder,
An inner cylinder rotatable relative to the outer cylinder;
One or more tumblers capable of rotating at least between a locking position that prohibits relative rotation of the inner cylinder relative to the outer cylinder, and an unlocking position that permits relative rotation of the inner cylinder relative to the outer cylinder; A cylinder lock comprising:
At least one of the tumblers is rotated in a predetermined direction by the key of the cylinder lock, and then both the rotation in the predetermined direction and the rotation in the direction opposite to the predetermined direction are regulated by the key. ,
A cylinder lock characterized by that.
An outer cylinder,
An inner cylinder rotatable relative to the outer cylinder;
One or a plurality of tumblers slidable at least between a locking position that prohibits relative rotation of the inner cylinder with respect to the outer cylinder, and an unlocking position that allows relative rotation of the inner cylinder with respect to the outer cylinder. A cylinder lock comprising and comprising:
After at least one of the tumblers is slid in a predetermined direction by the key of the cylinder lock, both the sliding in the predetermined direction and the sliding in the direction opposite to the predetermined direction are regulated by the key.
A cylinder lock characterized by that.
The tumbler includes at least a first tumbler member and a second tumbler member, and the unlocking position of the tumbler is changed by changing an engagement position of the first tumbler member and the second tumbler member. Can be changed,
The cylinder lock according to claim 1 or 2, wherein the cylinder lock is provided.
At least one of the tumblers is restricted from turning or sliding in the predetermined direction by a part of the key, and turning or sliding in the direction opposite to the predetermined direction is restricted by another part of the key. The
The cylinder lock according to any one of claims 1 to 3, wherein the cylinder lock is provided.
The key has a keyway;
A part of the key is the keyway or a part other than the keyway,
The other part of the key is the keyway or a part other than the keyway.
The cylinder lock according to claim 4, wherein the cylinder lock is provided.
The keyway is formed on one surface or both surfaces in the short direction or thickness direction of the key,
The cylinder lock according to claim 5, wherein:
A part of the key is a first surface constituting a part of the keyway;
The other part of the key is a second surface constituting a part of the keyway.
The cylinder lock according to claim 5, wherein:
The cylinder lock according to claim 7, wherein the keyway includes a plurality of recesses arranged at predetermined intervals along the longitudinal direction of the key.
The keyway is composed of a recess formed by meandering along the longitudinal direction of the key.
The cylinder lock according to claim 7, wherein:
The keyway is composed of recesses formed at different depths along the longitudinal direction of the key.
The cylinder lock according to claim 7, wherein: