JP5094521B2 - Variable code cylinder lock - Google Patents

Description

  The present invention relates to a variable code type cylinder lock, and in particular, is configured so that the inner cylinder does not always rotate to a code variable angle position where the unlocking code is converted, and when necessary, the inner cylinder is moved to a variable code angle. The present invention relates to a mechanism configured to be rotatable to a position.

  Generally, in the variable code cylinder lock, as described in Patent Documents 1 and 2 below, a plurality of tumbler holes are provided in the inner cylinder accommodated in the outer cylinder, and the tumblers are accommodated in these tumbler holes, respectively. When a key that matches a set state of a plurality of tumblers is inserted, the tumbler is aligned along the key so that the inner cylinder can be rotated, and a reset plate is provided on the inner side of the inner cylinder. The joint cam is connected via the inner cylinder, and locking and unlocking are normally performed by rotating the joint cam together with the inner cylinder. The rotation range of the joint cam is restricted by a stopper (fixing restriction member) fixed to the outer cylinder. Therefore, the rotation range of the inner cylinder is always restricted by the joint cam.

In the variable code cylinder lock, a reset lever for moving a reset plate that connects the inner cylinder and the joint cam is provided. When the reset plate is moved by operating this reset lever and the connection between the inner cylinder and the joint cam is released, the inner cylinder is separated from the joint cam and can be rotated. There is no restriction, and it is possible to rotate beyond the rotation range. Normally, the cord variable angle position is set so that the unlocking code can be changed to an angle exceeding the rotation range. When the inner cylinder is rotated to the code variable angle position, the key that has been inserted until then is pressed. It can be extracted. Then, by inserting a new key in place of the existing key, a plurality of tumblers are reconfigured within the rotation range, and then the inner cylinder is rotated in the opposite direction again to correspond to the new key. It is converted into a lock having an unlock code.
Japanese Patent Laid-Open No. 9-235922 JP 7-269189 A

  However, in the variable code cylinder lock that is configured so that the connection between the inner cylinder and the joint cam can be released by the reset mechanism, a reset plate that makes the inner cylinder and the joint cam non-rotatable with each other appears in the reset hole. There is a spring that can be freely accommodated and urges the reset plate in the protruding direction, and a reset lever is provided to push the reset plate into the reset hole and release the connection between the inner cylinder and the joint cam. The manufacturing cost increases because many parts need to be complicatedly incorporated in the reset mechanism, and the trouble caused by the reset mechanism (rotation failure, reset failure, There is a problem in that there is a high possibility that a lock code conversion failure will occur.

  Accordingly, the present invention solves the above-mentioned problems, and its object is to provide a variable code cylinder lock capable of reducing the manufacturing cost and preventing the mechanism failure by simplifying the reset mechanism. There is.

  In view of such circumstances, the variable code cylinder lock of the present invention includes an outer cylinder (1) and a key hole (2a) that is rotatably accommodated in the outer cylinder (1) and formed in the axial direction. And an inner cylinder (2) having a tumbler hole (2b, 2c) intersecting with the key hole, and a key shape accommodated in the tumbler hole (2b, 2c) and inserted into the key hole (2a). And a tumbler (3, 4) for restricting the rotation of the inner cylinder (2) relative to the outer cylinder (1) at the locking angle position (A) according to the position. In order to change the restricting mode of the rotation of the inner cylinder (2) relative to the outer cylinder (1) at the locking angle position (A), a predetermined code variable angular position (R) of the inner cylinder (2) The unlocking cord configuration defined by the tumbler (3, 4) is configured to be changeable. In the variable code type cylinder lock as described above, one of the outer cylinder (1) and the inner cylinder (2) is fixed directly or indirectly in the rotational direction and is configured to be movable in the radial direction, A movable restricting member (8) having a restricting portion (8s) for restricting a rotation angle range between the outer cylinder (1) and the inner cylinder (2), and the movable restricting member (8) in the radial direction. An urging member (10) for urging to one side, and fixed directly or indirectly to the other of the outer cylinder (1) and the inner cylinder (2) and abutting on the restricting portion (8s) And an engaging portion (1s) configured to restrict the rotation angle range, and when the movable restricting member (8) is located on the one side in the radial direction, the restricting portion ( 8s) abuts on the engaging portion (1s) and rotates the inner cylinder (2) at the restriction angle position (B). The rotation angle range is restricted within a range not including the cord variable angle position (R), and the movable restriction member (8) is opposed to the urging member (10) in the radial direction. The restriction portion (8s) is retracted when moved to the side, and the rotation angle range exceeds the restriction angle position (B) and includes the cord variable angle position (R). To do.

  According to this invention, the movable restricting member engaged with the outer cylinder or the inner cylinder in the rotational direction is provided so as to be movable in the radial direction, and the movable restricting member is biased to one side in the radial direction by the biasing member. When the member is arranged on the one side, the restricting portion comes into contact with the engaging portion so that the rotation angle range of the outer cylinder and the inner cylinder is restricted to the restriction angle position so that the inner cylinder does not reach the variable angle position. On the other hand, when the movable restricting member moves against the biasing member to the opposite side in the radial direction, the restricting portion retracts and the restriction of the movable angle range is released, so that the inner cylinder is at the restricting angular position. Configured to reach a variable angular position beyond. Therefore, unlike the conventional reset mechanism, the rotation angle range can be regulated very easily with only the movable regulating member and the urging member provided with the regulating portion that comes into contact with the engaging portion. In addition to being able to reduce, it is possible to avoid malfunction caused by the reset mechanism.

  In one aspect of the present invention, when the restriction portion (8s) is retracted, the rotation angle range comes into contact with the engagement portion (1s) at a restriction angle position before the restriction angle position (B). Is further provided with a fixing restricting member (9) provided with a stop portion (9s) that restricts the cord in a manner including the cord variable angular position (R). According to this, since the fixed restricting member is provided separately from the variable restricting member, and the stop portion of the fixed restricting member comes into contact with the engaging portion, the rotation angle range is restricted in a mode including the code variable angle position. Thus, the inner cylinder can be stopped to rotate at the limit angle position ahead of the regulation angle position while being configured to be rotatable up to the cord variable angle position. This fixing restricting member can be easily formed by a cam structure or the like for restricting the rotation angle range of the inner cylinder of the conventional cylinder lock.

  In this case, it is preferable that the limit angle position is the code variable angle position (R). According to this, when the stop portion (9 s) contacts the engagement portion (1 s) at the cord variable angle position (R), the inner cylinder is corded when the restriction portion of the movable restriction member is retracted. Since the operation stops at the variable angle position, the code variable angle position for converting the unlocking code is immediately determined, so that the code conversion operation is facilitated.

  In another aspect of the present invention, the tumbler is configured to be immovable at the restriction angle position (B). Since the tumbler is configured to be immovable at the restriction angle position, the key can be inserted / removed at the locking angle position and the cord variable angle position, but the key cannot be inserted / removed at the restriction angle position. By setting the unlocked angle position as in the embodiment, the key cannot be removed in the unlocked state to ensure safety, and the key is prevented from being removed in the unlocked state. Or a key inserted into the cylinder lock at the time of unlocking can be used as a handle. Normally, the tumbler is configured to be movable at the locking angle position (A) and the cord variable angle position (R), so that the key can be freely inserted and removed.

  In another aspect of the present invention, the movable restricting member (8) is provided with a guided edge (8g) formed continuously behind the restricting portion (8s) and the restricting angular position (B). ), The guide is formed continuously at the tip of the engaging portion (1s) for supporting the guided edge (8g) and maintaining the position of the movable restricting member (8) in the radial direction. An edge (1k) is provided. According to this, when the movable restricting member is moved in the radial direction against the biasing member at the time of resetting, the restricting portion is retracted and the inner cylinder is once rotated to a position beyond the restricting angular position. Even if the restricting member is released, the guided edge is supported by the guide edge, so that the retracted state of the restricting portion is maintained, and after the code conversion operation is performed at the code variable angle position, the rotation angle of the inner cylinder is maintained as it is. Since the guided edge does not come into contact with the guide edge when the control angle is returned and the control angle position is exceeded, the movable restricting member automatically returns to the original radial position (one side) by the biasing member. It will be. Therefore, the reset operation and the code conversion operation can be performed more easily.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the overall configuration of the variable code cylinder lock according to the present embodiment will be described with reference to FIGS. 1 to 3 and FIGS. 9 to 12. Here, FIG. 1 is a longitudinal sectional view (sectional view taken along the line II of FIG. 2) along the axial direction of the outer cylinder of the embodiment of the variable code cylinder lock according to the present invention, and FIG. 3 (a) is a side view of the inner cylinder of this embodiment, FIG. 3 (b) is a front view of the inner cylinder, FIG. 3 (c) is a rear view of the inner cylinder, and FIG. FIG. 10 is a cross-sectional view showing a state in which a key is inserted in this embodiment, and FIG. 11 is an assembly cross-section at a locking angle position orthogonal to the axial direction of this embodiment. FIG. 12 and FIG. 12 are assembly sectional views at the cord variable angle position.

  The variable code cylinder lock of the present embodiment is inserted into the outer cylinder 1 shown in FIGS. 1 and 2, and is placed inside the outer cylinder 1 so as to be accommodated so as to be rotatable around an axis. It has the inner cylinder 2 shown in FIG. As shown in FIGS. 1 and 2, the outer cylinder 1 is formed with a shaft hole 1 a that accommodates the inner cylinder 2 at the center, and linearly extends in the axial direction from the back side to the vicinity of the front surface on the outer peripheral part. The formed concave groove portions 1b, 1c, 1d, and 1e are formed. A plurality of pin holes 1ba, 1ca, 1da, 1ea (only 1ba) are provided in the concave grooves 1b, 1c, 1d, and 1e, respectively, through the outer cylinder 1 in the radial direction to communicate the outside with the shaft hole 1a. 1 is provided in a manner arranged in the axial direction.

  Further, on the outer peripheral portion on the back side of the outer cylinder 1, a seating surface 1 f is formed which is formed in an arc shape around the axis in the rear view and is a flat surface facing the back side. The seating surface 1f is a sliding surface on which a movable restricting member 8 described later slides. Further, a convex portion 1g is provided which is formed in an arc shape continuously around the axis with respect to the seating surface 1f, and further includes an arc-shaped guide edge 1k centering on the axis line and projecting toward the rear side in the axial direction. An engaging portion 1s made of a step extending in the radial direction is formed at one end of the convex portion 1g. The outer peripheral surface of the outer cylinder 1 other than the concave groove portion is formed in a cylindrical surface shape, and a male screw is engraved on the outer peripheral surface. In addition, an outer peripheral frame portion 1h that protrudes toward the rear side in the axial direction is formed on the outer peripheral side of the seating surface 1f.

  As shown in FIG. 3, the inner cylinder 2 is formed with a key hole 2a extending in the axial direction in the center portion (in the illustrated example, a slit-like hole opened to the side), and the outer cylinder is provided with an inner cylinder. 2 corresponding to the concave groove portions 1b, 1c or the concave groove portions 1d, 1e of the outer cylinder 1 according to the angular position of the axis 2, and corresponding to the pin holes 1ba, 1ca or the pin holes 1da, 1ea, respectively. In the directional position, a plurality of pin holes 2b and 2c are formed, which penetrate the inner cylinder 2 and communicate the outside with the key hole 2a.

  Further, the rear portion 2f of the inner cylinder 2 has flat engagement surfaces 2h, 2h ', 2h "facing the outer side in the radial direction around the axis, and the remaining surfaces are arcuate. A holding hole 2i is opened on the locking surface 2h ', and the holding hole 2i is formed in a direction intersecting the axis on a plane orthogonal to the axis. A spring (coil spring) 10 to be described later is inserted and disposed, and a small-diameter protruding portion 2g protrudes from the rear portion 2f of the inner cylinder 2 on the rear side in the axial direction. The engaging surfaces 2j and 2j 'are formed, and the remaining two opposing surfaces are formed in an arc shape.Threads are engraved on the outer peripheral surface other than the engaging surface of the protruding portion 2g. Is done.

  As shown in FIG. 9, the inner cylinder 2 is inserted and arranged in the shaft hole 1a of the outer cylinder 1, and the cord pin 3, the drive pin 5 and the spring (coil spring) are inserted into the pin hole 2b and the pin hole 1ba aligned with each other. 6 are sequentially accommodated, and a cover 7 for holding them is attached in the recessed groove portion 1 b of the outer cylinder 1. Here, the row | line | column of these code pins 3 each accommodated in the some pin hole 2b comprises the code pin row | line | column which determines an unlocking code | cord | chord. Similarly, in the pin hole 2c and the pin hole 1ca aligned with each other, the code pin 3, the variable pin 4, the drive pin 5, and the spring (coil spring) 6 are sequentially accommodated, and the cover 7 that holds these is the concave groove portion. Mounted in 1c. Here, the code pin 3 and the variable pin 4 respectively accommodated in the plurality of pin holes 2c determine the unlocking code in the same manner as described above, and for making the unlocking code variable as described later. A variable code pin array is configured. In addition, although not shown, the drive pin 5 and the spring 6 similar to the above are sequentially accommodated in the pin hole 1da and the pin hole 1ea, and the cover 7 for holding them is placed in the concave grooves 1d and 1e. It is attached. The pin holes 2b and 2c correspond to the tumbler holes, and the code pin 3 and the variable pin 4 correspond to the tumbler.

  As shown in FIG. 10, when the key 11 is inserted into the key hole 2a, the cord pin 3 is aligned at a radial position corresponding to the key groove (dimple) 11a of the key 11, and the key 11 is locked. Is the boundary position between the code pin 3 and the drive pin 5, or the boundary position between the variable pin 4 and the drive pin 5 is the boundary position between the pin holes 2b and 2c and the pin holes 1ba and 1ca ( Therefore, the inner cylinder 2 can be rotated together with the key 11. Although not particularly limited, in the illustrated example, it can be rotated clockwise from the locking angle position in the front view (counterclockwise in the rear view).

  11 is a cross-sectional view orthogonal to the axial direction when the inner cylinder 2 is at the locking angle position A, and FIG. 12 is a diagram when the inner cylinder 2 is rotated 90 degrees from the locking angle position A and is at the cord variable angle position R. FIG. As described above, at the locking angle position A, the code pin 3 and the variable pin 4 move in the radial direction by the pin holes 2b and 2c communicating with the pin holes 1ba and 1ca and pushing up the spring 6 via the drive pin 5. Since it is in a possible state, the key 11 can be inserted and removed.

  However, when the inner cylinder 2 is rotated clockwise from the locking angle position A shown in FIG. 11 toward the cord variable angle position R shown in FIG. 12, the cord pin 3 and the variable position are changed between the angular positions A and R. Since the pin 4 rotates while being disposed in the pin holes 2b and 2c, the outer peripheral side thereof is separated from the pin holes 1ba and 1ca and is closed by the inner peripheral surface of the outer cylinder 1, and thus moves in the radial direction. It becomes impossible. In this state, the key 11 cannot be removed from the key hole 2a.

  On the other hand, in the cord variable angle position R, the pin holes 2b and 2c communicate with the other pin holes 1da and 1ea, respectively. Therefore, the cord pin 3 and the variable pin 4 are arranged in the radial direction as in the locking angle position A. Therefore, the key 11 can be inserted and removed.

  The key 11 is removed at the above-mentioned code variable angle position R, a new key corresponding to another unlocking code is inserted, and the code pin 3 is moved and rearranged in accordance with this new key. The variable pin 4 arranged in the pin hole 2c enters the pin hole 1ea, and the boundary position between the cord pin 3 and the variable pin 4 is aligned with the boundary position between the pin hole 2c and the pin hole 1ea, or until then the pin When the variable pin 4 accommodated in the hole 1ea enters the pin hole 2c, and the boundary position between the variable pin 4 and the drive pin 5 matches the boundary position between the pin hole 2c and the pin hole 1ea, the unlocking code is changed. Is done.

  Since the inner cylinder 2 can be rotated in this state, when the inner cylinder 2 is rotated in the reverse (counterclockwise) direction, the code pin 3 and the variable pin 4 cannot be moved again, and the unlocking code is maintained. . Then, by returning the inner cylinder 2 to the locking angle position A, a new key can be extracted. In this locked state, the key can be unlocked only with a new key. As described above, in this embodiment, the unlocking code can be changed by exchanging the key at the code variable angular position R, and the once converted unlocking code can be returned to the original unlocking code. It is.

  Next, a more detailed configuration of the present embodiment will be described with reference to FIGS. 4 and 5. 4A is a plan view of the movable restricting member of the present embodiment, and FIG. 4B is a plan view of the fixed restricting member of the present embodiment. In the present embodiment, the movable restricting member 8 is fitted and fixed to the rear portion 2 f of the inner cylinder 2, and the fixed restricting member 9 is fitted and fixed to the base of the protruding portion 2 g of the inner cylinder 2.

  As shown in FIG. 4 (a), the movable restricting member 8 is formed with an opening 8a at the center of the thin plate, and the outer edge 8u in the upper part of the figure is the outer peripheral part of the seating surface 1f of the outer cylinder 1 or the outer peripheral frame part. It is formed in an arc shape centering on the axis line that matches the inner edge of 1h, and the upper opening inner edge 8au inside the arc-shaped outer edge 8u also matches the outer edge of the rear portion 2f of the inner cylinder 2 and is centered on the axis line It is formed in the arc shape. Here, when the movable restricting member 8 moves radially inward, the opening inner edge 8au comes into contact with the arcuate outer peripheral portion of the rear portion 2f, and when the movable restricting member 8 moves radially outward, the outer edge 8u It is configured so as to be in contact with the inner edge of the outer peripheral frame portion 1h outside the seating surface 1f. As a result, the posture of the movable restricting member 8 is restricted and stabilized.

  Further, the opening inner edges 8as and 8as' on the left and right sides of the opening 8a in the figure are linearly formed and formed in parallel to each other. These opening inner edges 8as and 8as' engage with the locking surfaces 2h "and 2h, respectively, whereby the movable restricting member 8 is guided linearly along the locking surface in the radial direction. An opening inner edge 8ad at the lower side of 8a is also formed in a straight line corresponding to the engaging surface 2h 'of the opposing rear portion 2f, but a concave portion 8b for receiving a spring (coil spring) 10 described later is formed at the center. The

  On the outer edge of the movable restricting member 8 in the lower part of the figure, a restricting portion 8s configured in a step shape shifted in the radial direction is formed in a portion corresponding to the outside of the recess 8b, and from the radially outer end of the restricting portion 8s. An arcuate guided edge 8g is formed toward the left side in the figure. Further, an arc-shaped guided edge 8h is formed from the inner end in the radial direction of the restricting portion 8s toward the right side in the drawing (that is, the rotation direction opposite to the guided edge 8g).

  As shown in FIG. 4B, the fixing restricting member 9 is formed with an opening 9a in the center of the thin plate, and the outer edge is formed in an arc shape as a whole. However, stepped stop portions 9s and 9t shifted in the radial direction are provided in a part of the outer edge, and the outer edge portion between these stop portions 9s and 9t is a concave shape located radially inward from the other outer edge portions. It has become a part. The angular range of the concave portion limits the rotation range of the inner cylinder 2. The opening 9a has a rounded rectangular opening shape, and linear opening inner edges 9au and 9ad facing each other are provided above and below in the drawing. Sharp small protrusions 9b and 9b are provided on the inner edge 9ad of the opening.

  The movable restricting member 8 is fitted to the inner cylinder 2 by fitting the rear part 2f to the opening 8a in such a posture that the opening inner edges 8as and 8as' face the engaging surfaces 2h "and 2h of the rear part 2f of the inner cylinder 2 respectively. The fixing restricting member 9 has opening inner edges 9au and 9ad on the locking surfaces 2j 'and 2j of the base part (the part adjacent to the rear part 2f) of the projecting part 2g of the inner cylinder 2. By fitting the base portion of the projecting portion 2g to the opening 9a in such a manner as to face each other, it is fixed in the rotational direction with respect to the inner cylinder 2. At this time, the small protrusions 9b, 9b are crushed and fixed fixing members 9 and the protruding portion 2g are prevented from being loosened and their fitted state is held and fixed, as shown in the state where the movable restricting member 8 and the fixed restricting member 9 are engaged with the inner cylinder 2. Is FIG.

  As shown in FIG. 5, the movable restricting member 8 is slidably contacted with the rear portion 2f of the inner cylinder 2 from the rear side in the axial direction, and moves on the seating surface 1f (see FIG. 1) in the illustrated radial direction Fr ( (Sliding) is possible. Further, the fixed restricting member 9 is fixed from the back side of the movable restricting member 8 in the axial direction while being fitted to the protruding portion 2g of the inner cylinder 2. Here, the restricting portion 8s of the movable restricting member 8 is disposed at a position rotated by a predetermined amount (about 10 degrees in the illustrated example) counterclockwise when viewed from the rear side in the axial direction with respect to the stop portion 9s of the fixed restricting member 9. .

  Here, the spring 10, which is an urging member, is disposed in a compressed state between the holding hole 2 i and the recess 8 b of the movable restricting member 8 in a state where a part of the spring 10 is accommodated in the holding hole 2 i. The spring 10 always biases the movable restricting member 8 toward one side in the radial direction Fr (referred to as “radially outward” in the illustrated example depending on the entire position of the movable restricting member 8). In the illustrated example, the movable restricting member 8 is disposed radially outward by the biasing force of the spring 10, but the opposite side of the radial direction Fr (illustrated example) by pushing the movable restricting member 8 to the center side from the outside. Then, it is configured to be movable in the “radially inner side” depending on the position of the entire movable restricting member 8. Although the spring 10 is a coil spring in the illustrated example, the present invention is not limited to this. When the external stress is not applied, the movable restricting member 8 is always arranged on the outer side in the illustrated radial direction. Any urging member such as a torsion spring, a leaf spring, rubber, or a magnet can be used as long as it does not prevent the movable restricting member 8 from moving inward in the radial direction.

  Here, the restricting portion 8 s provided in the movable restricting member 8 is configured by a step extending along the radial direction Fr that is the moving direction of the movable restricting member 8, and the relationship when contacting the restricting portion 8 s. Since the joining portion 1s is also composed of a step extending along the radial direction Fr, the movable restricting member 8 can be easily moved in the radial direction Fr in a contact state between the restricting portion 8s and the engaging portion 1s. The contact state can be smoothly released. Further, since the moving direction (radial direction Fr) is parallel to the urging direction of the spring 10 that is the urging member, and the step of the restricting portion 8s exists on the axis of the spring 10, the movement of the movable restricting member 8 is performed. Smoothness and efficiency at the time can be improved.

  In addition, as shown by a dotted line in FIG. 4, by forming a recess 8q in the illustrated lower edge of the movable restricting member 8, the movable restricting member 8 can be inserted by inserting a tool having a sharp tip inside the radial direction Fr. When the tool is pushed inward in the radial direction, the tip of the tool can be prevented from slipping, and the operation can be reliably performed. Further, by forming the concave portion 9q at a position corresponding to the concave portion 8q of the fixing restriction member 9 disposed adjacent to the axial direction, the outer edge of the fixing restriction member 9 does not become an obstacle when the tool is inserted. Thus, the above operation can be performed more easily.

  Next, with reference to FIG. 6 thru | or FIG. 8, the effect | action of the movable control member 8 and the fixed control member 9 which concern on this invention is demonstrated. Here, FIG. 6A is a front view showing the rotational posture of the inner cylinder 2, FIG. 6B is a side perspective view of the outer cylinder 1 and the inner cylinder 2, and FIG. 6 (d) is a rear view of the inner cylinder 2, and FIG. 6 (e) is a rear view showing the fixed regulating member 9 together with the convex portion 1g. 7 (a) and 8 (a) are front views showing the rotation posture of the inner cylinder 2, and FIGS. 7 (b) and 8 (b) are rear views of the movable restricting member 8 and the fixed restricting member 9. 7 (c) and 8 (c) are rear views of the rear portion of the inner cylinder 2, and FIGS. 7 (d) and 8 (d) are rear views showing the fixing regulating member 9 together with the convex portion 1g.

  In the present embodiment, as shown in FIG. 6, at the locking angle position A, the restricting portion 8 s of the movable restricting member 8 and the stop portion 9 s of the fixed restricting member 9 are both separated from the engaging portion 1 s of the outer cylinder 1. is there. In this state, as described above, the movable restricting member 8 is located on the radially outer side where the restricting portion 8 s is disposed on the outer peripheral side by the biasing force of the spring 10.

  When the key 11 is inserted from the locking angle position A and the inner cylinder 2 is rotated clockwise as seen from the front side in the axial direction, as shown in FIG. The restricting portion 8s comes into contact with the engaging portion 1s and cannot be rotated any further. At this angular position, a lock mechanism (or switch) (not shown) that is linked to the protruding portion 2g is already released. Here, as described above, the code pin 3 and the variable pin 4 cannot move in the radial direction, so the key 11 cannot be removed. Thus, the structure in which the key 11 cannot be removed at the unlocking angle position B is useful in applications where there is a fear of leaving the key 11 in an unlocked state, for example, a safe, a cash dispenser, a game machine rental supply machine, etc. When a function similar to that of a door handle is expected by pulling the key 11, it is useful in, for example, a drawer or a drawer type machine.

  In addition, since the variable restricting member 8 is urged radially outward by the spring 10 between the locking angle position A and the unlocking angle position B, the guided edge 8h is within the convex portion 1g. It is comprised so that it may slide smoothly on the guide edge 1k comprised with a surrounding surface. In particular, as shown in the illustrated example, both the guided edge 8h and the guide edge 1k of the convex portion 1g are formed in an arc shape centered on the axis, so that the position variation and posture in the radial direction of the variable restricting member 8 therebetween The fluctuation can be suppressed, and the occurrence of a mechanism failure due to the destabilization of the variable restricting member 8 can be prevented.

  Next, at this unlocking angle position B, a tool having a sharp tip such as tweezers is inserted into a gap (not shown) formed in the rear portion of the outer cylinder 1, and the restriction portion 8 s of the movable restriction member 8 is inserted. When the movable restricting member 8 is moved inward in the radial direction by pushing the vicinity (for example, the guided edge 8g in the lower portion of FIG. 4A) inward, the restricting portion 8s moves to the inside of the engaging portion 1s. As a result, the engagement portion 1s gets over the engagement portion 1s, the engagement of the restricting portion 8s with the engagement portion 1s is released, and the inner cylinder 2 can further rotate clockwise. When the inner cylinder 2 is rotated clockwise, the guided edge 8g slides on the guide edge 1k of the convex portion 1g as shown in FIG. When the stop portion 9s of the fixing restricting member 9 comes into contact with the engaging portion 1s, the inner cylinder 2 is brought into a non-rotatable state again. The limit angle position by the fixing restricting member 9 is the code variable angle position R. In the illustrated example, the cord variable angle position (restricted angle position) R is a position rotated 90 degrees clockwise from the locking angle position A and 10 degrees clockwise from the unlocking angle position (regulation angle position) B. As described above, since the limit angle position of the rotation range by the stop portion 9s of the fixing restricting member 9 is the code variable angle position R, the inner cylinder 2 can be reliably set to the code variable angle position R. Therefore, the code conversion operation can be easily performed.

  Between the unlocking angle position B and the cord variable angle position R, the guided edge 8g of the variable restricting member 8 moved inward in the radial direction slides on the guide edge 1k of the convex portion 1g. The position of the variable restricting member 8 is maintained as it is. Therefore, it is not necessary to perform a troublesome operation of continuously pushing the movable restricting member 8 from the outside, and the rotation restriction by the restricting portion 8s can be released only by a temporary operation while the restricting portion 8s gets over the engaging portion 1s. . In this case, although not particularly limited, the guided edge 8g and the guide edge 1k of the convex portion 1g are both formed in an arc shape with the axis as the center, thereby restricting the movement with the rotation of the inner cylinder 2. Since the position variation and the posture variation in the radial direction of the member 8 are suppressed and the movable restricting member 8 can be further stabilized, the occurrence of a mechanism failure can be prevented.

  The guided edge 8g only needs to be continuously formed within a range (10 degrees in the illustrated example) in contact with the engaging portion 1s until at least the cord variable angle position R is reached. Further, the guide edge 1k only needs to be continuously formed within a range in which the guide edge 1k comes into contact with the restricting portion 8s until reaching the cord variable angle position R. When the recessed portion 8q indicated by the dotted line in FIG. 4 is provided in the guided edge 8g, the guided edge 8g existing from the restricting portion 8s to the recessed portion 8q is continuously formed over the above range. There is no influence (such as catching of the movable restricting member 8 on the convex portion 1g) due to the provision of 8q. However, if there is no backlash between the movable restricting member 8 and the rear portion 2f of the inner cylinder 2 and there is no backlash between the outer cylinder 1 and the inner cylinder 2, the above effect is eliminated. The configuration as described above is not necessarily required.

  At the code variable angle position R, the code pin 3 and the variable pin 4 are in a state of being movable in the radial direction as described above, so that the key 11 can be inserted and removed. Therefore, the key 11 can be extracted and a new key can be inserted. When the new key has a shape that can correspond to each of the code pins 3 and the variable pins 4, or when the original key 11 remains inserted, the inner cylinder 2 is rotated counterclockwise. Will be possible. When the inner cylinder 2 is thus rotated in the reverse direction, the stop portion 9s is separated from the engaging portion 1s, and the guided edge 8g of the movable restricting member 8 slides on the guide edge 1k of the convex portion 1g, and the regulation is eventually performed. When the portion 8s returns to the position of the engaging portion 1s, the movable restricting member 8 loses the support in the radial direction by the convex portion 1g and automatically returns to the radial direction outside by the elastic force of the spring 10.

  As described above, in the present embodiment, the rotation range of the inner cylinder 2 is restricted and restricted by the variable restriction member 8 and the fixed restriction member 9, but a member corresponding to the fixed restriction member 9 has conventionally existed. As a result, the structure is extremely simple in that the variable restricting member 8 and the spring 10 are newly provided. In spite of such a simple structure, as in the conventional reset mechanism, the inner cylinder 2 is always prevented from reaching the code variable angle position R and can be easily operated when necessary to reach the code variable position. The inner cylinder 2 can be rotated. Therefore, the manufacturing cost can be reduced and the size of the lock can be reduced.

  In particular, in the present embodiment, the rotation restriction by the movable restriction member 8 can be easily released by only a temporary operation, and is automatically restricted simply by returning the inner cylinder 2 to the unlocking angle position B from the released state. Since the state is restored, the code conversion operation can be performed very easily. Further, since the limit angle position by the fixing restricting member 9 is the code variable angle position R, the setting operation of the inner cylinder 2 to the code variable angle position R is very easy. However, in the present invention, the limit angle position only needs to be set to a position that does not hinder reaching the code variable angle position R. For example, the limit angle position may be a position ahead of the code variable angle position. .

  In addition, the code | cord variable cylinder lock of this invention is not limited only to the above-mentioned illustration example, Of course, a various change can be added in the range which does not deviate from the summary of this invention. For example, in the above embodiment, a pin tumbler type cylinder lock that has a pin hole as a tumbler hole and uses a cord pin, a variable pin, etc. as a tumbler has been described. However, the same applies to a cylinder lock that uses a plate tumbler, for example. Is possible.

  In the above embodiment, the movable restricting member 8 is fixed in the rotational direction with respect to the inner cylinder 2, and the restricting portion 8 s is in contact with the engaging portion 1 s fixed to the outer cylinder 1. However, conversely, the movable restricting member 8 is fixed in the rotational direction with respect to the outer cylinder 1, and the restricting portion 8 is configured to abut on the engaging portion fixed to the inner cylinder 2. Good. Such a configuration is obvious and can be modified very easily by those skilled in the art.

  Furthermore, in the above embodiment, the movable restricting member 8 is always arranged radially outward and moved radially inward during operation. However, the movable restricting member 8 is always arranged radially inward. In the operation, it may be moved radially outward. Such a configuration is also obvious and can be easily modified by those skilled in the art.

  13 and 14 show one example of a configuration different from the above embodiment. 13A is a plan view of the movable restricting member 8 ′ of the configuration example, FIG. 13B is a plan view of the fixed restricting member 9 ′, and FIG. 14A is an external view at the locking angle position A of the configuration example. The rear view of the cylinder 1 ', the inner cylinder 2', the movable restricting member 8 'and the fixed restricting member 9', and the rear view of the inner cylinder 2 ', FIG. The rear view of the cylinder 2 ', the movable restricting member 8' and the fixed restricting member 9 'and the rear view of the inner cylinder 2', FIG. 14 (c) is the outer cylinder 1 ', inner cylinder 2', movable at the cord variable angle position R FIG. 6 is a rear view of the regulating member 8 ′ and the fixed regulating member 9 ′ and a rear view of the inner cylinder 2 ′.

  As shown in FIG. 13 (a), the movable restricting member 8 'of this configuration example is a thin plate provided with openings 8a', and linear outer edge portions 8ss 'and 8st' are formed in parallel on the left and right sides. A stepped portion 8b 'is provided on the protruding piece protruding from one outer edge portion 8ss'. Further, a convex inner edge portion 8c 'protruding inward is provided at the inner edge of the opening 8a', and one side edge of the convex inner edge portion 8c 'serves as a restricting portion 8s'.

  On the other hand, as shown in FIG. 13 (b), the fixing regulating member 9 'is also a thin plate provided with an opening 9a', and a convex inner edge 9b in which a part of the inner edge of the opening 9a 'protrudes inward. ', And one side edge of the convex inner edge portion 9b' is a stop portion 9s'.

  As shown in FIG. 14, the movable restricting member 8 'and the fixed restricting member 9' are both attached to the back surface of the outer cylinder 1 '. On the back surface of the outer cylinder 1 ', there are provided a pair of parallel linear inner edges (consisting of stepped portions provided on the back) 1f', 1f ", and one inner edge 1f ' The movable restricting member 8 'is opposed to and slides against the outer edge portion 8st' of the movable restricting member 8 'to guide the movable restricting member 8' so as to be movable in the radial direction Fr. The other inner edge portion 1f " The movable restricting member 8 'is guided so as to be movable in the radial direction Fr while facing and slidingly contacting a part. A step portion 1g 'is provided on the back surface of the outer cylinder 1' adjacent to the inner edge portion 1f ", and a spring 10 such as a coil spring is provided between the step portion 1g 'and the step portion 8b' of the movable restricting member 8 '. 'Is accommodated in a compressed state.

  The rear portion 2f ′ of the inner cylinder 2 ′ has a substantially circular cross section, and is disposed inside the opening 8a ′ of the movable restricting member 8 ′ and the opening 9a ′ of the fixed restricting member 9 ′. An arc-shaped concave groove 2g ′ is formed in the rear portion 2f ′, and one inner end portion of the concave groove 2g ′ is an engaging portion 2s ′. In this case, the outer peripheral edge of the rear portion 2f 'is configured to guide the movable restricting member 8' and the fixed restricting member 9 'from the inside by slidingly contacting the inner edges of the opening 8a' and the opening 9a '. This is preferable for stabilizing the regulating members 8 'and 9'.

  The movable restricting member 8 'is configured to be movable in the radial direction Fr by being guided by the inner edge portions 1f', 1f "(and the outer peripheral edge of the rear portion 2f ') of the outer cylinder 1'. It is urged toward one side in the radial direction (in the illustrated example, “radially inward” corresponding to the entire position of the movable restricting member 8 ′) and is normally disposed radially inward. At this time, the convex inner edge 8c 'of the movable restricting member 8a' and the convex inner edge 9b 'of the fixed restricting member 9' are accommodated in the concave groove 2g '. Further, the movable restricting member 8 'is moved to the opposite side in the radial direction against the elastic force of the spring 10' (referred to as "radially outward" in the illustrated example corresponding to the entire position of the movable restricting member 8 '). As a result, the convex inner edge portion 8c 'comes out of the concave groove 2g'.

  At the locking angle position A shown in FIG. 14 (a), with respect to the engaging portion 2s' in the concave groove 2g ', the restricting portion 8s' of the convex inner edge portion 8c' and the stop portion 9s of the convex inner edge portion 9b '. ′ Are arranged at angular positions apart from each other. When the inner cylinder 2 'is rotated clockwise as viewed from the front side in this state, the engaging portion 2s' is eventually moved to the movable restricting member 8' at the unlocking angle position (regulating angle position) B shown in FIG. 14 (b). The contact part 8s' is not in contact with it and cannot be rotated any further. In the illustrated example, the unlocking angular position B is an angular position of 80 degrees from the locking angular position A.

  Next, when the movable restricting member 8 'is moved radially outward with a tool or the like (not shown) at the unlocking angle position B, the restricting portion 8s' gets over the engaging portion 2s' and the engagement between the two is released. As shown in FIG. 14 (c), the inner cylinder 2 'can be further rotated, but this time, the engaging portion 2s' comes into contact with the stop portion 9s 'of the fixing restricting member 9' to stop the rotation. In this example, this limit angle position is the code variable angle position R. This code variable angular position R is 10 degrees from the unlocking angular position B in the illustrated example. At the cord variable angular position R, the tip edge of the convex inner edge portion 8c ′ of the movable restricting member 8 ′ is detached from the groove 2g ′ and rides on the outer peripheral edge of the rear portion 2f ′ of the inner cylinder 2 ′. The position of the movable restricting member 8 ′ in the radial direction Fr is maintained. Here, the front end edge of the convex inner edge portion 8c ′ corresponds to the guided edge, and the outer peripheral edge of the rear portion 2f ′ corresponds to the guide edge. The relationship between the guided edge and the guide edge is the same as in the above embodiment. Therefore, explanation is omitted.

  Also in this configuration example, the same operation and effect as the reset mechanism can be obtained with a simple configuration as in the above embodiment, so that the manufacturing cost can be reduced and the lock structure can be made compact. Moreover, it is the same as that of the said embodiment also in the point which can be set to a code | cord | chord variable angle position by simple operation, and the reset from a code | cord variable angle position is performed automatically.

The longitudinal cross-sectional view of the outer cylinder of embodiment. The rear view of the outer cylinder of embodiment. The side view (a) of the inner cylinder of embodiment, a front view (b), and a rear view (c). The top view (a) of the movable control member of embodiment and the top view (b) of a fixed control member. The rear view which shows the attachment state of a movable control member and a fixed control member. The figure (a) thru | or (e) which shows the structure of each part of a locking angle position. The figure (a) thru | or (d) which shows the structure of each part of an unlocking angle position. The figure (a) thru | or (d) which shows the structure of each part of a code | cord | chord variable angle position. The longitudinal cross-sectional view which shows the principal part of a lock | rock structure. The longitudinal cross-sectional view which shows the state which inserted the key in the lock | rock. Sectional drawing which shows the internal structure of the lock | rock in a locking angle position. Sectional drawing which shows the internal structure of the lock | rock in a cord variable angle position. The top view (a) of the movable control member of the structural example different from embodiment, and the top view (b) of a fixed control member. It is explanatory drawing (a) in the locking angle position of the structural example different from embodiment, explanatory drawing (b) in an unlocking angle position, and explanatory drawing (c) in a cord variable angle position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Outer cylinder, 1k ... Guide edge, 1s ... Engagement part, 2 ... Inner cylinder, 3 ... Code pin, 4 ... Variable pin, 5 ... Drive pin, 6 ... Spring, 7 ... Cover, 8 ... Movable control member, 8s ... regulating part, 8g ... guided edge, 9 ... fixing restricting member, 9s ... stop part, 10 ... spring, 11 ... key

Claims (5)

An outer cylinder (1), a key hole (2a) that is rotatably accommodated in the outer cylinder (1) and formed in the axial direction, and a tumbler hole (2b, 2c) that intersects the key hole are provided. The inner cylinder (2) and the tumbler holes (2b, 2c) are configured to be movable according to the shape of the key inserted into the key hole (2a). A tumbler (3, 4) for restricting rotation of the inner cylinder (2) relative to the outer cylinder (1) in (A), and the outer cylinder (1) in the locking angle position (A). An unlocking cord configuration defined by the tumblers (3, 4) at a predetermined cord variable angular position (R) of the inner cylinder (2) in order to change the restriction mode of the rotation of the inner cylinder (2). In the variable code type cylinder lock configured to be changeable,
The outer cylinder (1) and the inner cylinder (2) are fixed to one of the outer cylinder (1) and the inner cylinder (2) directly or indirectly in the rotational direction and are movable in the radial direction. (2) A movable restricting member (8) having a restricting portion (8s) for restricting the rotation angle range between the two, and a biasing member for biasing the movable restricting member (8) to one side in the radial direction. (10) and directly or indirectly fixed to the other of the outer cylinder (1) and the inner cylinder (2), and the rotation angle range is regulated by contacting the regulating part (8s). An engaging portion (1s) configured to be configured to be
When the movable restricting member (8) is positioned on the one side in the radial direction, the restricting portion (8s) abuts on the engaging portion (1s) and the inner cylinder (2) is rotated at the restricting angular position (B). Stop the movement, and restrict the rotation angle range within the range not including the cord variable angle position (R),
When the movable restricting member (8) moves to the opposite side in the radial direction against the biasing member (10), the restricting portion (8s) is retracted, and the rotation angle range is set to the restricting angle position (B). The variable code cylinder lock is configured to include the code variable angular position (R) beyond the   When the restricting portion (8s) is retracted, it comes into contact with the engaging portion (1s) at a restricting angular position before the restricting angular position (B), and the rotation angle range is changed to the cord variable angular position (R). The variable code cylinder lock according to claim 1, further comprising a fixing restricting member (9) provided with a stop portion (9s) that restricts in a manner that includes a stopper.   3. The variable code cylinder lock according to claim 2, wherein the limit angle position is the variable angle position (R).   The variable code cylinder lock according to any one of claims 1 to 3, wherein the tumbler is configured to be immovable at the restriction angle position (B).   The movable restricting member (8) is provided with a guided edge (8g) formed continuously behind the restricting portion (8s), and the guided member is moved when the restricting angular position (B) is exceeded. A guide edge (1k) formed continuously at the tip of the engaging portion (1s) for supporting the edge (8g) and maintaining the radial position of the movable restricting member (8) is provided. The variable code cylinder lock according to any one of claims 1 to 4, wherein the variable code cylinder lock is provided.

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