JP2011080318A - Locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device capable of further reducing thickness of a mechanical key. <P>SOLUTION: In this locking device, an engaging member 13 is stored in an engaging member storage part 12 of an operation body 10 to displace between an engaging position arranged across the operation body 10 and a case 7 and a non-engaging position arranged on an inner side of the operation body 10. Tumblers 21, 22 are supported to rotate centered on a rotary shaft 16 in a tumbler storage part 14 of the operation body 10 and rotate by engaging their check parts 21b, 22b with a key plate inserted into a key hole 11. Each of the tumblers 21, 22 restrains or permits displacement of the engaging member 13 to the non-engaging position in accordance with an angle of rotation centered on the rotary shaft 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a locking device.

  Conventionally, for example, as disclosed in Patent Document 1, there is a lock device that performs locking and unlocking in cooperation with a mechanical key in which a plurality of code holes are formed as key codes on a card-like key plate.

  As shown in FIG. 12, the lock device includes a case 51 that is attached to a door such as a vehicle or an entrance, and an operating body 52 that is slidably inserted into the case 51. The operating body 52 is provided with a groove 53 for inserting the key plate 5. When the key plate 5 is inserted into the groove 53 in the case 51 and the actuating body 52, holes 54a and 54b extending in a direction perpendicular to the key plate 5 are formed in portions corresponding to the code holes 5a of the key plate 5, respectively. Has been. The holes 54a and 54b are aligned with each other to form a single long hole 54. The long hole 54 includes, in order from the side close to the key plate 5, a ball 55 that engages with the code hole 5 a of the key plate 5, and two types of locking pins 56 a for preventing and releasing the movement of the operating body 52. 56b and a spring 57 for urging the locking pins 56a and 56b toward the ball 55 are accommodated. The locking pins 56a and 56b are divided in the longitudinal direction, and the divided positions are set so as to coincide with the boundary between the case 51 and the operating body 52 when the regular key plate 5 is inserted. Yes. Specifically, the locking pin 56a corresponding to the cord hole 5a is set so that the divided position coincides with the boundary between the operating body 52 and the case 51 when the key plate 5 is not inserted. . Further, the locking pin 56b not corresponding to the cord hole 5a is separated from the boundary between the operating body 52 and the case 51 by the thickness d of the key plate 5 when the key plate 5 is not inserted. It is set to be arranged on the ball 55 side.

  Accordingly, as shown in FIG. 13A, when the regular key plate 5 is inserted into the groove 53, the boundary between the locking pins 56a and 56b coincides with the boundary between the case 51 and the operating body 52. The relative displacement between the body 52 and the case 51 becomes possible, and the locking / unlocking operation of the locking device becomes possible. On the other hand, as shown in FIG. 13B, when an unauthorized key plate 5 is inserted, the boundary between the locking pins 56a and 56b is equal to the thickness d of the key plate 5 by the operating body 52 and the case 51. Since the operating body 52 and the case 51 are engaged with each other via the locking pins 56a and 56b, the relative displacement between the operating body 52 and the case 51 becomes impossible and the lock is released. The device cannot be locked or unlocked.

  In addition, conventionally, the lock device can be locked and unlocked by transmitting and receiving an identification code through predetermined wireless communication between a portable device possessed by the user and a lock device mounted in a vehicle or a house. Electronic key systems are known. This electronic key system can secure higher safety by performing user authentication based on the identification code, and is highly convenient because it does not require the key to be inserted into the keyhole. It is rapidly spreading in applications. In such an electronic key system, the mechanical key for manually locking / unlocking the above-described locking device can be used when the electronic key system fails to operate properly due to, for example, a failure in the electric system / communication system of the portable device. Usually, it is accommodated in the accommodating part provided in the portable machine. In such portable devices, further miniaturization is desired in order to improve portability. When the mechanical key is accommodated in the portable device, the mechanical key accommodating space is important among the factors that determine the size of the portable device, and accordingly, the thinning of the mechanical key is desired. Further, thinning of mechanical keys that are not accommodated in portable devices is also desired from the viewpoint of portability.

Japanese Patent Laid-Open No. 2003-307058

  However, in the above-described conventional locking device, since the key plate 5 pushes the ball 55 in the direction of the thickness d of the key plate 5, the locking pins 56 a and 56 b are displaced. The key plate 5 is disposed at a position shifted from the boundary between the operating body 52 and the operating body 52 by the thickness d. Accordingly, when the key plate 5 is thinned, the distance from the boundary between the locking pins 56a and 56b to the boundary between the case 51 and the operating body 52 is shortened, and the locking pins 56a and 56b are not easily caught by the case 51 and the operating body 52. End up. For this reason, there is a concern that the engagement between the case 51 and the operating body 52 becomes insufficient, and the relative displacement between the case 51 and the operating body 52 cannot be reliably controlled.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a lock device that can further reduce the thickness of a mechanical key.

  The invention according to claim 1 is provided with a case fixed to the installation target and a key hole into which a key plate having a plurality of code holes formed as a key code is inserted, and provided relative to the case. The actuating body is engaged with the actuating body in a state where a regular key plate is not inserted into the keyhole provided in the actuating body, and the relative displacement of the actuating body with respect to the case is restricted. A plurality of tumblers, and the engagement between the actuating body and the case by the tumbler is released according to an engagement state between a cord hole of a regular key plate inserted into the key hole and the tumbler. A locking device that allows relative displacement of the operating body with respect to the case, wherein the operating body is disposed on the case side in a thickness direction of the key plate inserted into the key hole. An engaging member accommodating portion to be opened, and an engaging position for restricting relative displacement of the operating body relative to the case by projecting to the outside of the operating body along the engaging member accommodating portion. And an engagement provided so as to be displaceable between a non-engagement position that is disposed inside the actuating body and allows the relative displacement of the actuating body with respect to the case by releasing the engagement with the case. A member and a tumbler housing portion that communicates the engagement member housing portion and the key hole in the thickness direction of the key plate inserted into the key hole, and the tumbler is disposed on the tumbler housing portion. The key plate is inserted into the hole so as to be rotatable about a rotation axis extending in the width direction, and the outer peripheral surface thereof corresponds to the recess into which the engagement member can enter and the cord hole. Possible In the non-inserted state of the key plate with respect to the key hole, the tumbler is adapted to engage with the inserted key plate, while the tumbler is centered on the rotating shaft through the engagement with the inserted key plate. A collation part that rotates and displaces integrally is provided, and the outer surface of the tumbler corresponds to the engagement member accommodating part according to whether or not the code hole of the inserted key plate corresponds to the collation part. A state in which the displacement of the engagement member from the engagement position to the non-engagement position is regulated, and the recess corresponds to the engagement member housing portion from the engagement position of the engagement member to the non-engagement. The gist is to adopt a state in which displacement to the alignment position is allowed.

  According to the present invention, the tumbler is rotatably supported in the insertion / extraction direction of the key plate around the rotation axis extending in the width direction of the key plate inserted into the key hole. Through the engagement with the inserted key plate, it is rotationally displaced integrally with the tumbler around the rotation axis. The tumbler has an outer peripheral surface corresponding to the engagement member housing portion from the engagement position of the engagement member to the non-engagement position depending on whether or not the code hole of the inserted key plate corresponds to the collation portion. Regulate the displacement to. As a result, the engaging member protrudes outside the operating body and is held in a state engaged with the case, and the case and the operating body cannot be displaced relative to each other. Further, in the tumbler, the concave portion corresponds to the engagement member housing portion from the engagement position of the engagement member to the non-engagement position depending on whether or not the code hole of the inserted key plate corresponds to the collation portion. Allow displacement. As a result, the engaging member is disposed inside the operating body, the engagement with the case is released, and the operating body can be displaced relative to the case. That is, the thickness of the key plate does not affect the amount of protrusion of the engaging member toward the case, in other words, the engaging force between the case and the operating body. Therefore, even when the thickness of the key plate is further reduced, the case and the operating body can be reliably engaged, and the mechanical key can be further reduced in thickness.

  The invention according to claim 2 is characterized in that a plurality of the tumblers are arranged at a position corresponding to the code hole of a regular key plate inserted into the key hole, and the regular key plate includes the first tumbler. A second tumbler disposed at a position not corresponding to the code hole, and the first tumbler is in a state in which the key plate is not inserted, or in a state in which the verification unit corresponds to the code hole of the inserted key plate In the neutral state, the collating portion of the first tumbler corresponds to be engageable with the inserted key plate, and the concave portion of the first tumbler is disposed at a position corresponding to the engaging member accommodating portion. In the state in which the collation unit corresponds to a portion that does not correspond to the code hole of the inserted key plate, the collation unit takes a rotational displacement state and the concave portion The second tumbler is arranged at a position displaced from the engaging member accommodating portion, and the second tumbler is in a state where the key plate is not inserted, or in a state where the collating portion corresponds to a code hole of the inserted key plate. The collating portion of the second tumbler corresponds to be engageable with the inserted key plate, and the concave portion of the second tumbler is held in a neutral state arranged at a position shifted from the engaging member accommodating portion. In the state in which the collation portion corresponds to a portion that does not correspond to the code hole of the inserted key plate, the collation portion assumes a rotational displacement state, and the concave portion corresponds to the engagement member accommodating portion. The gist is that it is arranged at a position.

  According to the present invention, the locking device is disposed at a position not corresponding to the code hole of the regular key plate and the first tumbler disposed at a position corresponding to the code hole of the regular key plate inserted into the key hole. And a second tumbler. For this reason, by changing the combination and arrangement of the first tumbler and the second tumbler, a plurality of types of key codes can be set as key codes corresponding to the lock device.

  According to a third aspect of the present invention, the side surface of the collating portion in the rotational direction of the tumbler is inclined inward in the width direction as it approaches the tip end side of the collating portion as seen from the axial direction of the rotating shaft. The gist.

  According to the present invention, the side surface of the collation unit in the rotation direction of the tumbler is inclined inward in the width direction toward the front end side of the collation unit as viewed from the axial direction of the rotation shaft. The plate can be smoothly engaged, and the operational feeling when the key plate is inserted and removed can be improved.

The gist of the invention described in claim 4 is that it is formed so that the shapes of the collating portions coincide with each other when viewed from the insertion direction of the key plate with respect to the key hole.
According to the present invention, since the tumbler is formed so that the shape of the collation portion matches when viewed from the insertion direction of the key plate with respect to the keyhole, the collation portion cannot be determined even when looking through the keyhole. For this reason, the engagement state between the case and the operating body by the tumbler corresponding to these cannot be determined from the state of the collation unit. For this reason, the security of the lock device is improved.

The gist of the invention described in claim 5 is that the key plate is a card type key formed in a card shape as a whole.
According to the present invention, since the key plate is formed in a card shape as a whole, the portability of the key plate is improved.

  ADVANTAGE OF THE INVENTION According to this invention, the locking device which can aim at the further thickness reduction of a mechanical key can be provided.

1 is a schematic configuration diagram of an electronic key system. (A) Perspective view of portable device, (b) Plan view of mechanical key. The perspective view which shows schematic structure of a locking device. Sectional drawing which shows schematic structure of a locking device. AA sectional drawing of FIG. BB sectional drawing of FIG. (A)-(d) Sectional drawing for demonstrating the effect | action of a 1st tumbler. (A)-(d) Sectional drawing for demonstrating the effect | action of a 2nd tumbler. Sectional drawing for demonstrating the effect | action of a locking device. (A) And (b) Sectional drawing for demonstrating the effect | action of a locking device. (A) And (b) Sectional drawing for demonstrating the effect | action of a locking device. Sectional drawing which shows schematic structure of the conventional locking device. (A) And (b) The partially expanded sectional view for demonstrating the effect | action of the conventional locking device.

Hereinafter, an embodiment in which the present invention is embodied in an electronic key system that electronically locks and unlocks a door lock as a lock device through wireless communication with a vehicle will be described with reference to the drawings.
As shown in FIG. 1, an electronic key system 1 includes a portable device 2 possessed by a user and a control device 4 that is mounted on a vehicle 3 and that locks and unlocks a door lock 4 a through wireless communication with the portable device 2. And.

  When the user carries the portable device 2 and approaches a predetermined area of the vehicle, the portable device 2 receives a request signal transmitted from the control device 4. This request signal is a signal for requesting the portable device 2 to transmit the ID code. When the portable device 2 receives the request signal, the portable device 2 transmits an ID signal including its own ID code recorded in advance. When receiving the ID signal transmitted from the portable device 2, the control device 4 collates the ID code on the portable device 2 side included in the ID signal with the ID code on the vehicle 3 side stored in advance, and both IDs The door lock 4a is unlocked on condition that the codes match. On the other hand, when the user who has the portable device 2 moves away from the predetermined area away from the vehicle 3, the control device 4 cannot receive the ID signal transmitted from the portable device 2. The control device 4 locks the door lock 4a of the vehicle on the condition that the portable device 2 cannot receive the ID signal. Therefore, the door lock 4a is locked / unlocked without the user touching the vehicle.

  As shown in FIG. 2A, the portable device 2 is formed in a rectangular parallelepiped shape as a whole. Inside the portable device 2 is housed a circuit board 2a on which an antenna and various electronic components constituting a communication circuit for performing wireless communication with the control device 4 are mounted. A key plate 5 serving as a mechanical key is accommodated in a key accommodating portion 2b provided open at one side of the portable device 2. The circuit board 2 a and the key housing portion 2 b are arranged so as to overlap in the thickness direction of the portable device 2. The key plate 5 corresponds to the lock device 6 (see FIG. 3) provided on the vehicle door 3a, and the electronic key system 1 does not operate properly due to a failure of the electric system / communication system of the portable device 2. In this case, the door lock 4a can be manually locked / unlocked by the key plate 5.

  As shown in FIG. 2B, the key plate 5 is made of a resin material and is formed in a rectangular plate shape as a whole. As shown by a solid line in FIG. 2 (b), the key plate 5 is placed in the thickness direction (in FIG. 2 (b), the depth direction in the drawing) as a key code corresponding to the lock device 6. Ten code holes 5a that pass through are formed, and a portion of the key plate 5 where the code hole 5a is not formed at one end (the left end in FIG. 2B) is for holding the key plate 5. It is a grip part. Each cord hole 5 a is formed in a rectangular shape extending in the longitudinal direction of the key plate 5 when viewed from the thickness direction of the key plate 5.

  As shown in FIG. 3, the case 7 of the locking device 6 has a rectangular parallelepiped outer shape as a whole, and is fixed to the vehicle door 3a so that one side surface 7a thereof is flush with the outer side surface of the vehicle door 3a. Has been. A slit 7 b extending in the longitudinal direction (substantially left-right direction in FIG. 3) is formed on one side surface 7 a of the case 7, and the slit 7 b is connected to an operating body accommodating portion 7 c provided inside the case 7. ing. The working body accommodating portion 7 c is formed in a rectangular parallelepiped shape corresponding to the outer shape of the case 7. As shown by a two-dot chain line in FIG. 4, five linear engaging recesses 7d extending in the direction along the slit 7b (the left-right direction in FIG. 4) are formed on the inner top surface of the working body accommodating portion 7c. They are arranged side by side in a direction (vertical direction in FIG. 4) perpendicular to the slit 7b.

  As shown in FIG. 4, in the working body housing portion 7c, the working body 10 formed in a rectangular parallelepiped shape extends in the direction (vertical direction in FIG. 4) perpendicular to the slit 7b along the inner surface of the case 7. It is slidably accommodated. The operating body 10 is held in a state in which the side surface on the slit 7b side (lower side in FIG. 4) of the operating body 10 is in contact with the inner side surface of the case 7 by a return mechanism (not shown) provided in the operating body accommodating portion 7c. Has been. When the operating body 10 is slid in an operation direction (upward in FIG. 4) which is a direction away from the slit 7b and the operating force is released, the operating body 10 is moved to the slit 7b side by the return mechanism. The side surface returns to a state where it contacts the inner side surface of the case 7. A lock mechanism (not shown) that locks and unlocks the door lock 4a is operatively connected to the operating body 10. When the operating body 10 is slid in the operation direction, the door lock 4a is locked and unlocked through the lock mechanism. It is designed to be locked. Specifically, when the operating body 10 is pressed upward in FIG. 4 when the door lock 4a is unlocked, the lock mechanism locks the door lock 4a, and when the door lock 4a is in the locked state, the operating body is operated. When 10 is pressed upward in FIG. 4, the lock mechanism unlocks the door lock 4a.

  In the actuating body 10, a key hole 11 having a rectangular cross section that is open to the slit 7 b side (lower side in FIG. 4) and into which the key plate 5 is inserted is formed in a portion corresponding to the slit 7 b. The key plate 5 is inserted into the key hole 11 from the direction along the sliding direction of the operating body 10 (downward in FIG. 4) via the slit 7b. When the key plate 5 inserted into the key hole 11 is further pushed in the insertion direction and the wall surface 11a at the back of the key hole 11 is pressed by the key plate 5, the operating body 10 can insert the key plate 5 in the insertion direction (insertion / removal). Direction). In the operating body 10, five engagement members opened to the case 7 side are accommodated on the outer side surface 10 a on one side in the thickness direction of the key plate 5 inserted in the key hole 11 (front side in FIG. 4). The portion 12 is recessed in a straight line extending in the width direction (left-right direction in FIG. 4) of the key plate 5 with respect to the key hole 11. The engaging member accommodating portion 12 corresponds to an engaging concave portion 7d provided on the inner top surface of the case 7 in a state where the actuating body 10 is disposed on the slit 7b side of the actuating member accommodating portion 7c by the return mechanism. In the position. The width in the insertion / extraction direction (the vertical direction in FIG. 4) of the key plate 5 of each engagement member accommodating portion 12 is substantially equal to the width of the corresponding engagement recess 7d in the insertion / extraction direction of the key plate 5 as well.

  Each engaging member accommodating portion 12 accommodates an engaging member 13. The engaging member 13 is formed in a columnar shape extending along the longitudinal direction (left and right direction in FIG. 4) of the engaging member accommodating portion 12, and the diameter thereof is the same as that of the engaging member accommodating portion 12 and the case 7. It is substantially equal to the width of the engaging recess 7d. The engagement member 13 projects along the engagement member housing portion 12 to the outside of the operating body 10 and engages with the case 7 (see FIGS. 7A and 8A) and the operation. It is disposed inside the body 10 so as to be displaceable between a non-engagement position (see FIGS. 10B and 11B) where the engagement with the case 7 is released. As shown in FIGS. 5 and 6, the radius of the engagement member 13 is set to be larger than the depth of the engagement recess 7d.

  As shown in FIG. 4, 20 tumbler accommodating portions 14 communicating with the key holes 11 are provided on the outer surface 10 a of the operating body 10. The tumbler accommodating portion 14 includes five rows arranged at predetermined intervals in the insertion direction of the key plate 5 with respect to the key hole 11 at predetermined intervals in the longitudinal direction of the engaging member accommodating portion 12. Has been placed. The tumbler accommodating portion 14 is formed in a rectangular cross section extending in the insertion direction of the key plate 5 into the key hole 11, and is orthogonal to the engaging member accommodating portion 12 at the center in the longitudinal direction of the tumbler accommodating portion 14. Is arranged. The engaging member accommodating portion 12 communicates with the key hole 11 via the tumbler accommodating portion 14. Further, in the outer surface 10 a of the operating body 10, between the tumbler accommodating portion 14 at one end in the longitudinal direction of the engaging member accommodating portion 12 and another tumbler accommodating portion 14 adjacent thereto, and in the longitudinal direction of the engaging member accommodating portion 12. Between the tumbler housing part 14 at the other end and the other tumbler housing parts 14 adjacent thereto, a spring housing recess 15 that communicates the adjacent tumbler housing parts 14 is formed.

  As shown in FIG. 5, in the operating body 10, a rotating shaft 16 can rotate with respect to the operating body 10 in a hollow portion including each spring housing recess 15 and a tumbler housing portion 14 communicating with the spring housing recess 15. Is arranged. The rotating shaft 16 extends in the width direction (left and right direction in FIG. 5) of the key plate 5 inserted into the key hole 11, and the corresponding spring accommodating recess 15 and tumbler accommodating portion 14 are substantially in the center in the insertion / extraction direction of the key plate 5. (See FIG. 4). A first tumbler 21 or a second tumbler 22 is supported at a portion of the rotating shaft 16 corresponding to each tumbler housing portion 14 so as to be rotatable about the rotating shaft 16. The first tumbler 21 and the second tumbler 22 have the same width in the width direction of the key plate 5 inserted into the key hole 11, as opposed to the tumbler housing portion 14 facing in the width direction of the key plate 5 inserted into the key hole 11. It is set to be approximately equal to the distance between the two inner surfaces. The first tumbler 21 is in a state in which the regular key plate 5 is completely inserted into the key hole 11, specifically, to a position where the tip of the key plate 5 contacts the wall surface 11 a at the back of the key hole 11. In the inserted state, the key plate 5 is disposed at a position corresponding to the code hole 5a. On the other hand, the second tumbler 22 is indicated by a two-dot chain line in the position not corresponding to the code hole 5a of the key plate 5 in a state in which the regular key plate 5 is completely inserted into the key hole 11 (FIG. 2B). ). As shown in FIG. 6, a permission portion 11 b is recessed in a portion of the key hole 11 that faces each tumbler housing portion 14. The allowing portion 11 b is formed in a rectangular shape corresponding to the tumbler housing portion 14 when viewed from the opening side of each tumbler housing portion 14. Further, the bottom surface of the allowing portion 11 b is formed in an arc shape centering on the rotation shaft 16 when viewed from the axial direction of the rotation shaft 16.

  Further, as shown in FIG. 5, torsion coil springs 23 as urging means are provided on the outer periphery of the portion corresponding to each spring accommodating recess 15 in the rotating shaft 16. A part of the central portion of the torsion coil spring 23 protrudes outward, and the protruding portion is fixed to a spring locking portion 15 a provided at the bottom of the spring accommodating recess 15. Further, both end portions 23 a and 23 a of the torsion coil spring 23 are formed so as to extend on both sides in the axial direction of the rotary shaft 16. Both end portions 23 a and 23 a of the torsion coil spring 23 are fixed to the first tumbler 21 or the second tumbler 22 respectively accommodated in the tumbler accommodating portions 14 on both sides of the corresponding spring accommodating recess 15. That is, two tumblers (first tumbler 21 or second tumbler 22) are fixed to one torsion coil spring 23.

Next, the structure of the first tumbler 21 and the second tumbler 22 will be described in detail.
As shown in FIG. 7A, the first tumbler 21 is formed in a substantially circular shape when viewed from the axial direction of the rotating shaft 16 (the width direction of the key plate 5). The first tumbler 21 is such that the sum of the radius r1 of the first tumbler 21 and the diameter D1 of the engaging member 13 is the bottom surface of the engaging recess 7d provided on the case 7 side from the rotation center O of the first tumbler 21. It is provided to be equal to the distance L1 up to 7e. The outer peripheral surface 21a of the first tumbler 21 is provided with one collating portion 21b extending outward in the radial direction. The collating part 21b is formed in a substantially triangular shape when viewed from the axial direction of the rotary shaft 16, and its outer surface is inclined inward in the width direction toward the tip side of the collating part 21b. Further, the amount of protrusion of the collating portion 21b from the outer peripheral surface 21a of the first tumbler 21 is arranged in the allowance portion 11b provided at the tip portion of the key hole 11 facing the tumbler housing portion 14. Is set to That is, the protrusion amount of the collating portion 21 b from the tumbler housing portion 14 is larger than the thickness d of the key plate 5. The collating unit 21 b is arranged in the tumbler housing part 14 according to the rotation angle around the rotation axis 16 of the first tumbler 21, or protrudes from the tumbler housing part 14 and arranged in the key hole 11. The collating unit 21 b is smoothly continuous with the outer peripheral surface 21 a of the first tumbler 21.

  Further, the outer peripheral surface 21a of the first tumbler 21 is provided with a recess 21c that opens outward in the radial direction. The collation part 21b and the recessed part 21c are provided at intervals of about 180 ° in the circumferential direction. The recess 21 c is formed in an arc shape that is convex toward the rotation center O of the first tumbler 21 when viewed from the axial direction of the rotary shaft 16. The recess 21c is indicated by a two-dot chain line in the disengagement position of the engagement member 13 (in FIG. 7A) when the recess 21c is disposed at a position corresponding to the engagement member housing portion 12. ) Is allowed to be displaced. The difference d1 between the distance (radius r1) from the outer peripheral surface 21a of the first tumbler 21 to the rotation center O of the first tumbler 21 and the distance from the bottom surface of the recess 21c to the rotation center O of the first tumbler 21 It is set substantially equal to the thickness d of the plate 5 (see FIG. 7B).

  The first tumbler 21 is held by a torsion coil spring 23 so as to be engageable with the key plate 5 inserted into the key hole 11. Specifically, in a state in which the key plate 5 is not inserted into the key hole 11, the first tumbler 21 has its collation part 21b entering the permission part 11b through the key hole 11, and its concave part 21c. Is held in a neutral state corresponding to the engaging member accommodating portion 12. The torsion coil spring 23 is fixed to the first tumbler 21 in a state where the torsion coil spring 23 is not wound around the rotating shaft 16, that is, in a state where no initial load is provided. The collating portion 21b of the first tumbler 21 engages with the key plate 5 inserted into the key hole 11, and is rotationally displaced in the insertion direction. As a result, the first tumbler 21 rotates about the rotation shaft 16.

  The first tumbler 21 has an outer peripheral surface 21a corresponding to the engaging member accommodating portion 12 and the engagement member 13 depending on whether or not the cord hole 5a of the inserted key plate 5 and the collating portion 21b are associated. A state in which the displacement from the mating position to the non-engaging position is regulated, and a state in which the recess 21c allows the displacement of the engaging member 13 from the engaging position to the non-engaging position corresponding to the engaging member housing portion 12. Take. Specifically, as shown in FIG. 7A, in the state where the key plate 5 is not inserted into the key hole 11, the first tumbler 21 is held in the neutral state described above. The concave portion 21c of the tumbler 21 is held at a position corresponding to the engaging member accommodating portion 12. In this state, the first tumbler 21 is in a state of allowing the displacement of the engagement member 13 from the engagement position to the non-engagement position. 7A, the engaging member 13 is moved by other tumblers 21 and 22 (see FIGS. 4 and 6) arranged in the depth direction of the first tumbler 21 in FIG. 7A. It is held in the engaged position.

  When the key plate 5 is inserted into the key hole 11 in a state where the first tumbler 21 is held in the neutral state, as shown in FIG. 7B, the collating portion 21b of the first tumbler 21 is inserted. It is engaged with the key plate 5 and is pressed by the key plate 5 to be displaced in the insertion direction. As a result, the first tumbler 21 rotates counterclockwise in FIG. 7B against the elastic force of the torsion coil spring 23. At this time, the torsion coil spring 23 (see FIG. 5) is wound by the first tumbler 21 rotating about the rotation shaft 16, and elastic force is accumulated in the torsion coil spring 23.

  As shown in FIG. 7C, when the key plate 5 is inserted at a position corresponding to the collating portion 21b of the first tumbler 21 and the code hole 5a of the key plate 5 is not provided. The recessed portion 21 c of the 1 tumbler 21 is disposed at a position shifted from the engaging member accommodating portion 12. In addition, the collating part 21 b moves from the tip of the key plate 5 to the upper surface of the key plate 5 and then slides on the upper surface of the key plate 5 as the key plate 5 is inserted. That is, the first tumbler 21 is in a rotationally displaced state in which the first tumbler 21 is rotated by a predetermined angle while a portion where the cord hole 5a of the key plate 5 is not provided at a position corresponding to the collating portion 21b of the first tumbler 21 To be kept. In this state, the first tumbler 21 is in a state of restricting the displacement of the engagement member 13 from the engagement position to the non-engagement position. At this time, the torsion coil spring 23 corresponding to the first tumbler 21 is held in a state where a certain elastic force is accumulated. In addition, since the protrusion amount from the outer peripheral surface 21a of the 1st tumbler 21 of the collation part 21b is larger than the thickness d of the key plate 5, the protrusion amount of a collation part is the thickness d of the key plate 5, for example. Compared with an equal or smaller tumbler, the amount of rotational displacement of the collating portion 21b due to the collating portion 21b engaging with the key plate 5 increases. This is because while the front end of the key plate 5 is engaged with the collating portion 21b, the collating portion 21b is pushed in the insertion direction of the key plate 5 and the first tumbler 21 rotates. Accordingly, the rotation angle of the first tumbler 21 from the neutral state shown in FIG. 7A to the rotational displacement state shown in FIG. 7C increases. As the rotation angle increases, the amount of displacement along the recess 21c of the engagement member 13 with respect to the unit rotation angle of the first tumbler 21 can be reduced. Therefore, the engagement member 13 is moved into the recess 21c of the first tumbler 21. It can be displaced gently along. For this reason, the operational feeling at the time of insertion / extraction of the key plate 5 improves.

  On the other hand, as shown in FIG. 7 (d), when the code hole 5a of the key plate 5 is disposed at a position corresponding to the collating portion 21b as the key plate 5 is inserted, the key plate 5 and the collating portion 21b The first tumbler 21 can be rotated about the rotation shaft 16. For this reason, the first tumbler 21 is rotated neutrally by the elastic force accumulated in the torsion coil spring 23 so that the collating portion 21b is disposed at a position where it can be engaged with the key plate 5. The concave portion 21c is arranged at a position corresponding to the engaging member accommodating portion 12. In this state, the first tumbler 21 is in a state of allowing the displacement of the engagement member 13 from the engagement position to the non-engagement position. 7D, the engaging member 13 is moved by other tumblers 21 and 22 (see FIGS. 4 and 6) arranged in the depth direction of the first tumbler 21 in FIG. 7D. It is held in the engaged position.

  Further, when the key plate 5 that has been inserted into the key hole 11 is pulled out, similarly to the case where the code hole 5a of the key plate 5 is disposed at a position corresponding to the collating portion 21b when the key plate 5 is inserted. The first tumbler 21 rotates clockwise through the engagement with the key plate 5. When the key plate 5 is completely pulled out and the engagement between the key plate 5 and the collating portion 21 b is released, the first tumbler 21 is collated by the elastic force accumulated in the torsion coil spring 23. The portion 21b rotates counterclockwise so as to be disposed at a position engageable with the key plate 5 to take the neutral state shown in FIG. 7A, and the concave portion 21c corresponds to the engaging member accommodating portion 12. It is arranged at the position to do. In this state, the first tumbler 21 is in a state of allowing the displacement of the engagement member 13 from the engagement position to the non-engagement position.

  That is, in a state where the key plate 5 is not inserted, or in a state where the collating portion 21 b corresponds to the code hole 5 a of the inserted key plate 5, the first tumbler 21 moves to the disengaged position of the engaging member 13. Displacement of is allowed. On the other hand, the first tumbler 21 regulates the displacement of the engagement member 13 to the non-engagement position in a state where the collation portion 21b corresponds to a portion not corresponding to the code hole 5a of the inserted key plate 5.

  Further, as shown in FIG. 7A, the first tumbler 21 is allowed to move from the engagement position of the engagement member 13 to the non-engagement position, and the engagement member 13 is in the state shown in FIG. ), When the first tumbler 21 rotates in the non-engagement position indicated by the two-dot chain line, the engagement member 13 passes through the engagement with the recess 21c as indicated by the two-dot chain line in FIG. Gradually displace to the engagement position side. The engaging member 13 slides on the outer peripheral surface 21 a of the first tumbler 21 over the boundary between the recess 21 c and the outer peripheral surface 21 a of the first tumbler 21. That is, the engaging member 13 arranged at the non-engaging position is moved to the engaging position when the first tumbler 21 rotates in a direction in which the concave portion 21c is displaced from the engaging member accommodating portion 12 as shown in FIG. Return to.

  As shown in FIG. 8A, the second tumbler 22 is formed in a substantially circular shape when viewed from the axial direction of the rotating shaft 16 (the width direction of the key plate 5), like the first tumbler 21. Yes. The second tumbler 22 has a bottom surface of the engagement recess 7d provided on the case 7 side from the rotation center O of the second tumbler 22 such that the sum of the radius r1 of the second tumbler 22 and the diameter D1 of the engagement member 13 is the same. It is provided so as to be equal to the distance L1 up to 7e. The outer peripheral surface 22a of the second tumbler 22 is provided with one collating portion 22b extending outward in the radial direction. The collation part 22b is formed in a substantially triangular shape when viewed from the axial direction of the rotary shaft 16, and its outer surface is inclined inward in the width direction toward the tip side of the collation part 22b. Further, the amount of protrusion of the collating portion 22b from the outer peripheral surface 22a of the second tumbler 22 is arranged in the allowance portion 11b provided at the tip portion of the key hole 11 facing the tumbler housing portion 14. Is set to That is, the protruding amount of the collating unit 22 b from the tumbler housing unit 14 is larger than the thickness d of the key plate 5. The collating unit 22 b is arranged in the tumbler housing 14 according to the rotation angle around the rotation axis 16 of the second tumbler 22, or protrudes from the tumbler housing 14 and is arranged in the key hole 11. Further, the collation unit 22 b is smoothly continuous with the outer peripheral surface 22 a of the second tumbler 22. The collating portion 22 b of the second tumbler 22 is formed to have the same shape as the collating portion 21 b of the first tumbler 21 when viewed from the direction in which the key plate 5 is inserted into the key hole 11. For this reason, the first tumbler 21 and the second tumbler 22 cannot be distinguished from each other when viewed from the direction in which the key plate 5 is inserted into the key hole 11.

  Further, the outer peripheral surface 22a of the second tumbler 22 is provided with a recess 22c that opens outward in the radial direction. The collation part 22b and the recessed part 22c are provided in the counterclockwise direction side in FIG. The recess 22 c is formed in an arc shape that protrudes toward the rotation center O of the second tumbler 22 when viewed from the axial direction of the rotary shaft 16. When the concave portion 22c is disposed at a position corresponding to the engaging member accommodating portion 12, the non-engaging position of the engaging member 13 (indicated by a two-dot chain line in FIG. 8B). It is formed so as to allow displacement. The difference d1 between the distance from the outer peripheral surface 22a of the second tumbler 22 to the rotation center O of the second tumbler 22 and the distance from the bottom surface of the recess 22c to the rotation center O of the second tumbler 22 is the thickness of the key plate 5. Is set substantially equal to d (see FIG. 8B).

  The second tumbler 22 is held by a torsion coil spring 23 so as to be engageable with the key plate 5 inserted into the key hole 11. Specifically, in a state in which the key plate 5 is not inserted into the key hole 11, the second tumbler 22 has its collation part 22b entering the permission part 11b through the key hole 11, and its concave part 22c. Is held in a neutral state corresponding to the engaging member accommodating portion 12. The torsion coil spring 23 is fixed to the second tumbler 22 in a state where the torsion coil spring 23 is not wound around the rotating shaft 16, that is, in a state where no initial load is provided. The collating portion 22b of the second tumbler 22 engages with the key plate 5 inserted into the key hole 11, and is rotationally displaced in the insertion direction. As a result, the second tumbler 22 rotates about the rotation shaft 16.

  The second tumbler 22 has an outer peripheral surface 22a corresponding to the engagement member accommodating portion 12 and the engagement member 13 depending on whether or not the code hole 5a of the inserted key plate 5 corresponds to the collating portion 22b. A state in which the displacement from the mating position to the non-engaging position is regulated, and a state in which the recess 22c allows the displacement of the engaging member 13 from the engaging position to the non-engaging position corresponding to the engaging member housing portion 12. Take. Specifically, as shown in FIG. 8A, in the state where the key plate 5 is not inserted into the key hole 11, the second tumbler 22 is held in the neutral state described above. The concave portion 22c of the two tumblers 22 is held at a position shifted from the engaging member accommodating portion 12. In this state, the second tumbler 22 is in a state of restricting the displacement of the engagement member 13 from the engagement position to the non-engagement position.

  When the key plate 5 is inserted into the key hole 11 in a state where the second tumbler 22 is held in the neutral state, as shown in FIG. 8B, the collating portion 22b of the second tumbler 22 is inserted. It is engaged with the key plate 5 and is pressed by the key plate 5 to be displaced in the insertion direction. Accordingly, the second tumbler 22 rotates counterclockwise in FIG. 8B against the elastic force of the torsion coil spring 23. At this time, the torsion coil spring 23 (see FIG. 5) is wound by the second tumbler 22 rotating about the rotation shaft 16, and elastic force is accumulated in the torsion coil spring 23.

  As shown in FIG. 8 (c), when the portion where the code hole 5a of the key plate 5 is not provided is arranged at the position corresponding to the collating portion 22b of the second tumbler 22 as the key plate 5 is inserted, The concave portion 22 c of the two tumblers 22 is disposed at a position corresponding to the engaging member accommodating portion 12. The collating unit 22b moves from the tip of the key plate 5 to the upper surface of the key plate 5, and then slides on the upper surface of the key plate 5 as the key plate 5 is inserted. That is, the first tumbler 21 is in a rotational displacement state in which the first tumbler 21 is rotated by a predetermined angle while a portion where the cord hole 5a of the key plate 5 is not provided at a position corresponding to the collating portion 22b of the second tumbler 22. To be kept. In this state, the second tumbler 22 is in a state of allowing the displacement of the engagement member 13 from the engagement position to the non-engagement position. 8C, the engaging member 13 is moved by other tumblers 21 and 22 (see FIGS. 4 and 6) arranged in the depth direction of the second tumbler 22 in FIG. 8C. It is held in the engaged position. At this time, the torsion coil spring 23 corresponding to the second tumbler 22 is held in a state where a certain elastic force is accumulated. In addition, since the protrusion amount from the outer peripheral surface 22a of the 2nd tumbler 22 of the collation part 22b is larger than the thickness d of the key plate 5, the protrusion amount of a collation part is the thickness d of the key plate 5, for example. Compared with an equal or smaller tumbler, the amount of rotational displacement of the collating unit 22b due to the collating unit 22b engaging with the key plate 5 is increased. This is because, while the tip of the key plate 5 is engaged with the verification unit 22b, the verification unit 22b is pushed in the insertion direction of the key plate 5 and the second tumbler 22 rotates. Therefore, the rotation angle of the second tumbler 22 from the neutral state shown in FIG. 8A to the rotational displacement state shown in FIG. 8C increases. As the rotation angle increases, the amount of displacement along the recess 22c of the engagement member 13 with respect to the unit rotation angle of the second tumbler 22 can be reduced. Therefore, the engagement member 13 is moved into the recess 22c of the second tumbler 22. It can be displaced gently along. For this reason, the operational feeling at the time of insertion / extraction of the key plate 5 improves.

  On the other hand, as shown in FIG. 8 (d), when the code hole 5a of the key plate 5 is disposed at a position corresponding to the collating portion 22b as the key plate 5 is inserted, the key plate 5 and the collating portion 22b are disposed. Is released, and the second tumbler 22 can rotate about the rotation shaft 16. Therefore, the second tumbler 22 is rotated neutrally by the elastic force accumulated in the torsion coil spring 23 so that the collating portion 22b is disposed at a position where the second tumbler 22 can be engaged with the key plate 5. And the concave portion 22c is disposed at a position shifted from the engaging member accommodating portion 12. In this state, the second tumbler 22 is in a state of restricting the displacement of the engagement member 13 from the engagement position to the non-engagement position.

  Further, when the key plate 5 inserted in the key hole 11 is extracted, the same as in the case where the code hole 5a of the key plate 5 is arranged at a position corresponding to the collating portion 22b when the key plate 5 is inserted. The second tumbler 22 rotates clockwise through the engagement with the key plate 5. When the key plate 5 is completely pulled out and the engagement between the key plate 5 and the collating portion 22 b is released, the second tumbler 22 is collated by the elastic force accumulated in the torsion coil spring 23. The portion 22b rotates counterclockwise so as to be disposed at a position where it can be engaged with the key plate 5 to take the neutral state shown in FIG. 8A, and the concave portion 22c is displaced from the engaging member accommodating portion 12. Placed in a different position. In this state, the second tumbler 22 is in a state of restricting the displacement of the engagement member 13 from the engagement position to the non-engagement position.

  That is, in a state where the key plate 5 is not inserted, or in a state where the collating portion 22 b corresponds to the code hole 5 a of the inserted key plate 5, the second tumbler 22 moves to the disengaged position of the engaging member 13. Regulate the displacement of. On the other hand, the second tumbler 22 allows the engagement member 13 to be displaced to the non-engagement position in a state where the collation portion 22b corresponds to a portion not corresponding to the code hole 5a of the inserted key plate 5.

  Further, as shown in FIG. 8C, the second tumbler 22 is allowed to move from the engagement position of the engagement member 13 to the non-engagement position, and the engagement member 13 is moved to the position shown in FIG. ), When the second tumbler 22 rotates in the non-engagement position indicated by the two-dot chain line, the engagement member 13 is engaged with the recess 22c as shown by the two-dot chain line in FIG. Gradually displace to the engagement position side. Then, the engaging member 13 slides on the outer peripheral surface 22 a of the second tumbler 22 over the boundary between the recess 22 c and the outer peripheral surface 22 a of the second tumbler 22. In other words, the engagement member 13 disposed at the non-engagement position is engaged with the engagement position when the second tumbler 22 rotates in a direction in which the recess 21c is displaced from the engagement member accommodating portion 12 as shown in FIG. Return to.

  Here, as described above, the engaging member 13 is formed in a substantially cylindrical shape, and the radius of the engaging member 13 is set to be larger than the depth of the engaging recess 7d (see FIGS. 5 and 5). (See FIG. 6). For this reason, when the operating body 10 is pressed in the operation direction via the key plate 5 in a state where the engaging member 13 is in the engaging position, the engaging member 13 is positioned on the outer peripheral surface on the case 7 side from the center. When the case 7 is engaged, it is pressed toward the non-engagement position. That is, when the operating body 10 is pressed in the operation direction via the key plate 5, the engaging member 13 is urged toward the non-engaging position.

  For this reason, when the operating body 10 is operated in a state where the displacement of the engaging member 13 from the engaging position to the non-engaging position is allowed by all the tumblers 21 and 22 as shown in FIG. As shown in FIGS. 11 (a) and 11 (a), the engaging member 13 arranged at the engaging position is pressed by the case 7 and shown in FIGS. 10 (b) and 11 (b), respectively. Displace to Thereby, the relative displacement with respect to the case 7 of the action body 10 is permitted. On the other hand, the operating body 10 is pressed through the key plate 5 in the operation direction in a state where the displacement of the engagement member 13 from the engagement position to the non-engagement position is not permitted by any of the tumblers 21 and 22. Since the engaging member 13 is not displaced from the engaging position to the non-engaging position, the engaging member 13 is engaged with the operating body 10 and the case 7. Thereby, the relative displacement with respect to the case 7 of the action body 10 is controlled. The difference d1 between the distance from the outer peripheral surface 21a, 22a of each tumbler 21, 22 to the rotation center O and the distance from the bottom surface of the recess 21c, 22c to the rotation center O corresponds to the amount of displacement of the engagement member 13. .

Next, an operation in the case where locking / unlocking is performed by cooperating the locking device configured as described above and a mechanical key will be described.
As shown in FIG. 6, when the key plate 5 is not inserted into the key hole 11 of the locking device 6, the first tumbler 21 has a recess 21 c corresponding to the engaging member accommodating portion 12 by a torsion coil spring 23. It is held in a neutral state arranged at the position. Further, the second tumbler 22 is held by the torsion coil spring 23 in a state where the concave portion 22 c is disposed at a position shifted from the engaging member accommodating portion 12. Thereby, the displacement to the non-engagement position of the engagement member 13 accommodated in the engagement member accommodating part 12 is controlled, and it is hold | maintained at an engagement position. For this reason, the operating body 10 and the case 7 are engaged via the engaging member 13, and the relative displacement between the operating body 10 and the case 7 is restricted. Therefore, the locking / unlocking operation of the locking device 6 is restricted.

  When the regular key plate 5 corresponding to the lock device 6 is inserted into the key hole 11 of the lock device 6, the collating portions 21 b and 22 b of the tumblers 21 and 22 are pressed against the tip portions of the key plates 5 to insert them. It is rotationally displaced in the direction. As a result, the tumblers 21 and 22 rotate around the rotation shaft 16. Then, as shown in FIG. 9, when the regular key plate 5 comes into contact with the wall surface 11 a behind the key hole 11 and is completely inserted, the cord hole 5 a of the key plate 5 is formed in the first tumbler 21. It is arranged at the corresponding position. For this reason, the collating part 21 b of the first tumbler 21 is not engaged with the key plate 5. Accordingly, the first tumbler 21 is in a neutral state, and the concave portion 21 c is disposed at a position corresponding to the engaging member accommodating portion 12. On the other hand, when the regular key plate 5 is completely inserted into the key hole 11, a portion not corresponding to the code hole 5 a of the key plate 5 is arranged at a position corresponding to the second tumbler 22. For this reason, the collation part 22b of the 2nd tumbler 22 will be in the state engaged with the key plate 5. FIG. Therefore, the second tumbler 22 is in a rotationally displaced state, and the concave portion 22 c is disposed at a position corresponding to the engaging member accommodating portion 12. That is, when the regular key plate 5 is inserted into the keyhole 11, the recesses 21c and 22c of all the tumblers 21 and 22 are disposed at positions corresponding to the engagement member accommodating portions 12, and the engagement members 13 are not engaged. Displacement to the engagement position is allowed. Therefore, when the operating body 10 is operated via the key plate 5 in this state, the outer peripheral surface on the case 7 side of the center of the engaging member 13 as shown in FIGS. 10 (a) and 11 (a), respectively. Is pressed by the case 7 and displaced from the engagement positions shown in FIGS. 7A and 8A to the non-engagement positions shown in FIGS. 10B and 11B, respectively. That is, the engagement between the case 7 and the operating body 10 by the engaging member 13 is released, the relative displacement of the operating body 10 with respect to the case 7 is allowed, and the locking / unlocking operation of the locking device 6 becomes possible.

  When the key plate 5 is extracted from the key hole 11 of the locking device 6, each tumbler 21, 22 is rotated to be in the original neutral state by the elastic force accumulated in the torsion coil spring 23 when the key plate 5 is inserted. To do. In the state where each tumbler 21, 22 has returned to the original state shown in FIG. 6, the concave portion 22 c of the second tumbler 22 is disposed at a position displaced from the engaging member accommodating portion 12. Thereby, the displacement to the non-engagement position of the engagement member 13 corresponding to the 2nd tumbler 22 is controlled, and the engagement member 13 is held in the state arranged at the engagement position. For this reason, the operating body 10 and the case 7 are engaged via the engaging member 13, and the relative displacement between the operating body 10 and the case 7 is restricted. Therefore, the locking / unlocking operation of the locking device 6 is restricted.

  When an unauthorized key plate is inserted into the key hole 11 of the lock device 6, the code hole of the key plate and the part where the code hole is not provided correspond to the first tumbler 21 and the second tumbler 22. Therefore, the recesses 21c and 22c of the tumblers 21 and 22 do not correspond to the engaging member accommodating portion 12 at all. For example, when a plate-like member is inserted as an unauthorized key plate, the concave portion 21 c of the first tumbler 21 is disposed at a position shifted from the engaging member accommodating portion 12. Thereby, the displacement to the non-engagement position of the engagement member 13 corresponding to the 1st tumbler 21 is controlled, and the engagement member 13 is held in the state arranged at the engagement position. For this reason, the operating body 10 and the case 7 are engaged via the engaging member 13, and the relative displacement between the operating body 10 and the case 7 is restricted. Therefore, the locking / unlocking operation of the locking device 6 is restricted.

Next, the operational effects of the above embodiment will be described below.
(1) The tumblers 21 and 22 of the lock device 6 are pivotally supported around a rotation shaft 16 extending in the width direction of the key plate 5 inserted in the key hole 11 so as to be rotatable in the insertion / removal direction of the key plate 5. Therefore, the collating portions 21 b and 22 b of the tumblers 21 and 22 are rotationally displaced integrally with the tumblers 21 and 22 around the rotation shaft 16 through the engagement with the inserted key plate 5. The tumblers 21 and 22 have outer peripheral surfaces 21a and 22a corresponding to the engaging member accommodating portions 12 depending on whether or not the cord holes 5a of the inserted key plate 5 and the collating portions 21b and 22b are associated. The displacement of the engaging member 13 from the engaging position to the non-engaging position is restricted. Thereby, the engaging member 13 protrudes outside the operating body 10 and is held in a state engaged with the case 7, and the relative displacement between the case 7 and the operating body 10 becomes impossible. Further, the tumblers 21 and 22 are engaged with the recesses 21c and 22c corresponding to the engaging member accommodating portions 12 according to the presence / absence of correspondence between the code holes 5a of the inserted key plate 5 and the collating portions 21b and 22b. The displacement of the member 13 from the engaged position to the non-engaged position is allowed. As a result, the engaging member 13 is disposed inside the operating body 10 and the engagement with the case 7 is released, and the relative displacement of the operating body 10 with respect to the case 7 becomes possible. That is, the thickness of the key plate 5 does not affect the amount of protrusion of the engagement member 13 toward the case 7, in other words, the engagement force between the case 7 and the operating body 10. Therefore, even when the thickness d of the key plate 5 is further reduced, the case 7 and the operating body 10 can be reliably engaged, and the mechanical key (key plate 5) can be further reduced in thickness. Can do.

  (2) Further, in this lock device 6, the torsion coil springs 23 that rotate the tumblers 21 and 22 are arranged so that the collating portions 21 b and 22 b can be engaged with the key plate 5. Arranged in the direction. For this reason, the locking device is more stable than the conventional locking device (see FIG. 12) in which the locking pins 56a and 56b and the spring 57 for biasing the locking pins 56a and 56b are arranged side by side in the thickness direction of the key plate 5. 6 can be reduced in thickness.

  (3) Further, the lock device 6 is configured such that when the operating body 10 is operated, the engagement member 13 disposed at the engagement position is pressed by the case 7 and displaced toward the non-engagement position. Has been. Here, for example, when the engagement member 13 is configured to be displaced to the non-engagement position only by its own weight, the engagement member 13 is always vertically above the tumblers 21 and 22. Since the locking device 6 has to be installed so as to be arranged, the posture of the locking device at the time of installation is limited. In this regard, according to the present embodiment, the operating member 10 is operated so that the engaging member 13 arranged at the engaging position is pressed by the case 7 and displaced toward the non-engaging position, so that it is installed. The posture of the locking device 6 is not limited.

  (4) The locking device 6 corresponds to the first tumbler 21 disposed at a position corresponding to the cord hole 5 a of the regular key plate 5 inserted into the key hole 11 and the cord hole 5 a of the regular key plate 5. And a second tumbler 22 arranged at a position not to be used. Therefore, by changing the combination and arrangement of the first tumbler 21 and the second tumbler 22, a plurality of types of key codes can be set as key codes corresponding to the lock device 6.

  Further, since the second tumbler 22 engages the case 7 and the operating body 10 in the neutral state, the case of the operating body 10 in a state where the key plate 5 is not inserted into the key hole 11 by the second tumbler 22. The relative displacement with respect to 7 is regulated. Therefore, relative displacement of the operating body 10 with respect to the case 7 is not allowed in a state where the regular key plate 5 is not inserted into the key hole 11. In addition, when an unauthorized key plate is inserted, the code hole of the key plate and the part where the code hole is not provided do not correspond to the first tumbler 21 and the second tumbler 22, The relative displacement of the body 10 with respect to the case 7 is restricted. From the above, the security of the lock device 6 is improved.

  (5) Since the side surfaces of the collating portions 21b and 22b in the rotational direction of the tumblers 21 and 22 are inclined toward the inner side in the width direction toward the distal end side of the collating portions 21b and 22b when viewed from the axial direction of the rotating shaft 16. The collating portions 21b and 22b of the tumblers 21 and 22 and the key plate 5 can be smoothly engaged, and the operational feeling when the key plate 5 is inserted and removed can be improved.

  (6) Since each of the tumblers 21 and 22 is formed so that the shapes of the collating portions 21b and 22b coincide with each other when viewed from the direction in which the key plate 5 is inserted into the key hole 11, the collating portions 21b and 22b can be seen through the key hole 11. Cannot be determined. Further, when the tumblers 21 and 22 are in the neutral state, any of the collating portions 21b and 22b is kept in the state of entering the permitting portion 11b through the key hole 11. For this reason, the engagement state between the case 7 and the operating body 10 by the tumblers 21 and 22 corresponding thereto cannot be determined from the states of the collating portions 21b and 22b. For this reason, the security of the lock device 6 is improved.

(7) Since the key plate 5 is formed in a card shape as a whole, the portability of the key plate 5 is improved.
(8) Since the allowance part 11b which permits the rotational displacement of the collation parts 21b and 22b is provided in the part corresponding to the collation parts 21b and 22b in the keyhole 11, the outer peripheral surfaces 21a and 22a of the tumblers 21 and 22 of the collation parts 21b and 22b The amount of protrusion from 22a can be set larger than the thickness d of the key plate 5. When the protruding amount of the collating portions 21b and 22b of each tumbler 21 and 22 increases, the amount of rotational displacement of the collating portions 21b and 22b due to the collating portions 21b and 22b engaging with the key plate 5 increases. The rotation angle of each of the tumblers 21 and 22 until the collating portions 21b and 22b of the 21 and 22 change from the neutral state to the rotational displacement state can be increased. As the rotation angle increases, the amount of displacement along the recesses 21c and 22c of the engagement member 13 with respect to the unit rotation angle of each tumbler 21 and 22 can be reduced. It can be gently displaced along the recesses 21c and 22c. Therefore, the operational feeling when the key plate 5 is inserted and removed can be improved.

  (8) Since the plurality of tumblers 21 and 22 correspond to one engaging member 13, the disengaged position of the engaging member 13 by any one of the tumblers 21 and 22 corresponding to the engaging member 13. If the displacement to is restricted, the operating member 10 and the case 7 are engaged by the engaging member 13. For this reason, since it becomes difficult to distinguish the engagement state of the operating body 10 and the case 7 from the state of each tumbler 21, 22, the lock device 6 is not easily unlocked by, for example, picking, and the security is improved.

  (9) By adopting the lock device 6 described above, the mechanical key housed in the key housing portion of the portable device 2 can be made thinner. For this reason, the portable device 2 can be reduced in size, and the portability of the portable device 2 can be improved.

  (10) Since the key plate 5 is made of a resin material, the communication characteristics of the portable device 2 can be ensured even when the key plate 5 is arranged on the portable device 2 so as to overlap the circuit board 2a on which a transmission antenna or the like is mounted. . For this reason, the freedom degree of design improves. In this case, since the key plate 5 is thinned as described above, the portable device 2 will not be significantly thick even if the key plate 5 is placed on the circuit board 2a.

  (11) The two tumblers (the first tumbler 21 or the second tumbler 22) are held in a state that can be engaged with the key plate 5 inserted into the key hole 11 by one torsion coil spring 23. The score can be reduced.

In addition, you may change this Embodiment as follows.
In the above embodiment, the engagement recesses 7d of the case 7 are formed in a straight line. However, for example, the engagement recesses 7d are scattered at positions corresponding to the tumbler accommodating portions 14 provided in the operating body 10. May be. In this case, the engaging member 13 may be formed in a spherical shape.

  In the above embodiment, ten cord holes 5a are provided in the key plate 5 and twenty tumbler accommodating portions 14 are provided in the operating body 10, but the first tumbler 21 is disposed at a position corresponding to the cord hole 5a. And if the 2nd tumbler 22 is arrange | positioned in the position which does not correspond to the cord hole 5a, the number of the cord hole 5a and the tumbler accommodating part 14 can be suitably changed according to a product specification etc. Moreover, you may arrange | position the cord hole 5a and the tumbler accommodating part 14 of the keyplate 5 in a staggered pattern. If arranged in this way, the cord holes 5a can be arranged more densely, which can contribute to the downsizing of the key plate 5 and the downsizing of the portable device 2.

  In the above embodiment, the two tumblers (the first tumbler 21 or the second tumbler 22) are held in a state that can be engaged with the key plate 5 inserted into the key hole 11 by one torsion coil spring 23. The two tumblers may be held in an engageable state with the key plate 5 inserted into the key hole 11 by the two torsion coil springs 23.

  In the above embodiment, two types of tumblers (the first tumbler 21 and the second tumbler 22) are provided. For example, there are three or more types of tumblers in which the engaging portions protrude from the tumbler housing portion, respectively. A tumbler may be provided. Further, only the second tumbler 22 that engages the operating body 10 and the case 7 in a state where the key plate 5 is not inserted may be provided.

  In the above embodiment, the collating portion 21b of the first tumbler 21 and the collating portion 22b of the second tumbler 22 are formed to have the same shape when viewed from the direction in which the key plate 5 is inserted into the keyhole 11. However, they may be formed differently.

-In above-mentioned embodiment, although the side surface of the collation parts 21b and 22b of the 1st tumbler 21 and the 2nd tumbler 22 was inclined, you may form in a curved surface form.
In the above embodiment, the rotary shaft 16 is provided to be rotatable with respect to the operating body 10, but the rotary shaft 16 may be fixed to the operating body 10.

In the above-described embodiment, the plurality of tumblers 21 and 22 are supported by one rotating shaft 16, but one tumbler 21 and 22 may be individually supported by one rotating shaft.
In the above embodiment, the tumblers 21 and 22 are rotatably supported by the rotating shaft 16, but the present invention is not limited to such a mode. For example, the inner side surface of the tumbler housing part 14 may be formed in an arc shape corresponding to the outer peripheral surfaces 21 a and 22 a of the tumblers 21 and 22, and the tumbler housing parts 14 may rotatably support the tumblers 21 and 22. .

  In the above embodiment, each tumbler 21, 22 is provided with the sum of the radius r 1 of the tumbler 21, 22 and the diameter D 1 of the engaging member 13 on the case 7 side from the rotation center O of the tumbler 21, 22. The engagement recess 7d is formed to be equal to the distance L1 to the bottom surface 7e, but is not limited to such a mode. The shape of each of the tumblers 21 and 22 and the shape of the engaging recess 7d are such that the engaging member 13 is pressed by the case 7 with the relative displacement of the operating body 10 with respect to the case 7 and displaced from the engaging position to the non-engaging position. Any shape can be appropriately changed.

  In the above embodiment, the engaging member 13 is orthogonal to the insertion direction of the key plate 5 so that the engaging member 13 is biased to the non-engaging position side by the case 7 when the operating body 10 is operated. Although it is formed in a substantially cylindrical shape extending in the direction and the radius of the engaging member 13 is set to be larger than the depth of the engaging recess 7d, the present invention is not limited to such a mode. For example, the engagement member 13 may be formed in a rectangular parallelepiped shape when the bottom surface of the engagement recess 7d is formed in an arc shape when viewed from a direction orthogonal to the insertion direction of the key plate 5. Moreover, in the said embodiment, although the engaging member 13 was urged | biased by the case 7 at the non-engagement position side, the said engagement member 13 was displaced to the non-engagement position, Such an aspect It is not limited to. For example, the engagement member 13 may be displaced to the non-engagement position by its own weight. In this case, the locking device is installed so that the engaging member 13 is always arranged above the tumblers 21 and 22 in the vertical direction.

  In the above embodiment, the concave portions 21c and 22c of the tumblers 21 and 22 are formed in a curved shape when viewed from the axial direction of the rotary shaft 16, but the engaging member 13 is formed according to the rotation angle of the tumblers 21 and 22. As long as the shape can be displaced between the engagement position and the non-engagement position, the bottom surfaces of the recesses 21c and 22c may be formed in a planar shape, and can be changed as appropriate.

In the above embodiment, the cord hole 5a that penetrates the key plate 5 in the thickness direction is provided as a key cord. However, the cord hole 5a may not penetrate.
In the above embodiment, the key plate 5 is formed in a rectangular plate shape as a whole, but for example, a grip member may be provided at one end of the key plate 5. In this case, for example, the gripping member of the key plate 5 can be fitted into the opening of the key hole 11 of the operating body 10 and the operating body 10 can be operated via the gripping section. In this way, the transmission of the operating force is performed between the gripping member and the operating body 10, and the key plate 5 itself is hardly involved. Therefore, the key plate 5 can be further reduced in thickness.

  In the above embodiment, the code hole 5a of the key plate 5 is formed in a rectangular shape extending in the longitudinal direction of the key plate 5 when viewed from the thickness direction of the key plate 5, but the portion corresponding to the code hole 5a As long as the collating portions 21b and 22b of the tumblers 21 and 22 do not engage with the key plate 5, they may be formed in an elliptical shape or a circular shape.

  In the above embodiment, the key plate 5 is formed from a resin material, but may be formed from a metal or the like. In this case, in the portable device 2, the relative positional relationship between the key plate 5 and the circuit board 2a can be appropriately adjusted.

  In the embodiment described above, the mechanical key (key plate 5) that can be accommodated in the key accommodating portion 2b of the portable device 2 is embodied, but may be embodied as a mechanical key that is not accommodated in the portable device 2. Moreover, in the said embodiment, although the key plate 5 was accommodated in the portable device 2 formed in the rectangular parallelepiped shape, you may materialize to the mechanical key accommodated in the portable device formed in the card shape. . In addition, an IC chip and an antenna for performing wireless communication with the control device 4 are mounted on a mechanical key formed in a card shape from a resin material, and the mechanical key itself functions as the portable device 2 in the above embodiment. May be. In this case, the user can lock and unlock the door lock 4a without touching the vehicle by carrying only the card-like mechanical key. Therefore, convenience is improved.

  In the above-described embodiment, the door lock 4 a is locked and unlocked when the operating body 10 is pressed in the operation direction along the insertion direction of the key plate 5 with respect to the key hole 11. The door lock 4a may be embodied as a lock device that is locked and unlocked when the operating body 10 is slid in the operation direction along the longitudinal direction of the slit 7b.

  In the above embodiment, the operating body 10 is embodied in the locking device 6 in which the door lock 4a is locked and unlocked by linearly sliding the operating body 10 with respect to the case 7, but the operating body is attached to the case. The door lock 4a may be embodied as a locking device that is locked and unlocked by performing a sliding operation in a substantially arc shape around the central axis extending in the thickness direction. Moreover, you may actualize to the cylinder lock in which the door lock 4a is locked and unlocked by rotating the inner cylinder (rotor) as the operating body with respect to the outer cylinder (cylinder) as the case.

-In above-mentioned embodiment, although the operating body 10 was accommodated in the operating body accommodating part 7c of the case 7, you may provide the operating body 10 with respect to the outer surface of a case so that relative displacement is possible, for example.
In the above embodiment, the electronic key system that locks and unlocks the door through wireless communication with the vehicle is embodied. However, the electronic key system may be embodied in a residential electronic key system.

Next, the technical idea that can be grasped from the embodiment will be described below.
(A) The tumbler is arranged on the axial direction side of the rotary shaft of the tumbler so that the tumbler is arranged at a position engageable with a key plate into which the collation unit is inserted when the collation unit is rotationally displaced. The locking device according to claim 1, further comprising an urging means for urging. According to this idea, the locking device 6 can be made thinner as compared with the conventional locking device.

  (B) The difference between the distance from the outer peripheral surface of the tumbler to the rotating shaft and the distance from the bottom surface of the recess to the rotating shaft is set to be larger than the protruding amount of the collating portion toward the keyhole. The lock device according to any one of claims 1 to 5 and (a) above. According to this philosophy, the difference between the distance from the outer peripheral surface of the tumbler to the rotating shaft and the distance from the bottom surface of the recess to the rotating shaft is set larger than the amount of protrusion to the keyhole side of the collating portion. The amount of displacement of the engaging member can be increased. For this reason, it becomes possible to enlarge the protrusion amount to the case side of an engaging member, and a case and an action body can be engaged more reliably.

  (C) The tip of the verification unit is arranged at a position corresponding to the verification unit in the key hole in a state where the key plate is not inserted in the key hole, and rotational displacement of the verification unit is allowed. 6. The locking device according to any one of claims 1 to 5 and any one of (A) and (B) above, wherein an allowance portion is provided. According to this idea, the protrusion amount of the collating portion of the tumbler can be set larger than the thickness of the key plate. When the protruding amount of the collating portion of the tumbler increases, the amount of rotational displacement of the collating portion due to the collating portion engaging with the key plate increases, so that the tumbler until the collating portion of the tumbler changes from the neutral state to the rotational displacement state. The rotation angle can be increased. As the rotation angle of the tumbler until the collating portion of the tumbler changes from the neutral state to the rotational displacement state, the displacement amount along the recess of the engagement member with respect to the unit rotation angle of the tumbler can be reduced. Can be gently displaced along the concave portion of the tumbler. Therefore, the operational feeling when the key plate 5 is inserted and removed can be improved.

  (D) In a portable device capable of locking / unlocking the lock device through wireless communication, the portable device cooperates with the lock device according to any one of claims 1 to 5 and (a) to (c) above. A portable device comprising a key accommodating portion for accommodating a key plate for locking and unlocking the locking device. According to the present invention, the mechanical key accommodated in the key accommodating portion of the portable device can be thinned by employing the above-described locking device. For this reason, it becomes possible to reduce the size of the portable device and improve the portability of the portable device.

  DESCRIPTION OF SYMBOLS 5 ... Key plate, 5a ... Code hole, 6 ... Locking device, 7 ... Case, 10 ... Actuator, 11 ... Key hole, 12 ... Engagement member accommodating part, 13 ... Engaging member, 14 ... Tumbler accommodating part, 16 DESCRIPTION OF SYMBOLS: Rotating shaft, 21 ... 1st tumbler as tumbler, 21a ... Outer peripheral surface, 21b ... Collation part, 21c ... Recessed part, 22 ... 2nd tumbler as tumbler, 22a ... Outer surface, 22b ... Collation part, 22c ... Recessed part.

Claims (5)

An operating body provided with a case fixed to the installation target, a key hole into which a key plate having a plurality of code holes formed as a key code is inserted, and provided relative to the case; and the operating body A plurality of tumblers for restricting relative displacement of the operating body with respect to the case by engaging the case and the operating body in a state where a regular key plate is not inserted into the key hole, According to the engagement state between the cord hole of the regular key plate inserted into the key hole and the tumbler, the engagement between the operating body and the case by the tumbler is released, and the relative of the operating body to the case A locking device that allows displacement,
The actuating body projects to the outside of the actuating body along the engaging member accommodating portion that opens to the case side in the thickness direction of the key plate inserted into the key hole. The engagement body is configured to engage with the case to restrict the relative displacement of the operation body with respect to the case, and the engagement body is disposed inside the operation body to release the engagement with the case. An engagement member that is displaceable between a non-engagement position that allows relative displacement of the case with respect to the case, and the engagement member housing portion and the key in the thickness direction of the key plate inserted into the key hole A tumbler accommodating portion communicating with the hole,
The tumbler is provided in the tumbler housing portion so as to be rotatable about a rotation axis extending in the width direction of the key plate inserted into the key hole, and the engaging member can enter the outer peripheral surface thereof. The key plate inserted while corresponding to the recessed portion and the code hole which can be engaged with the key plate to be inserted when the key plate is not inserted into the key hole. A collating part that rotates and displaces integrally with the tumbler around the rotation axis through engagement with
The tumbler has an outer peripheral surface corresponding to the engagement member housing portion from the engagement position of the engagement member according to whether or not the code hole of the inserted key plate corresponds to the collating portion. A state in which the displacement to the non-engagement position is regulated, and a state in which the recess allows the displacement of the engagement member from the engagement position to the non-engagement position corresponding to the engagement member housing portion. A locking device characterized by taking. The plurality of tumblers are arranged at a position corresponding to the code hole of the regular key plate and a first tumbler arranged at a position corresponding to the code hole of the regular key plate inserted into the key hole. A second tumbler,
In the state where the key plate is not inserted, or in the state where the collation unit corresponds to the code hole of the inserted key plate, the first tumbler includes the key plate into which the collation unit of the first tumbler is inserted. And the concave portion of the first tumbler is held in a neutral state arranged at a position corresponding to the engaging member accommodating portion, and is not located in a portion corresponding to the cord hole of the inserted key plate. In the state corresponding to the collation unit, the collation unit takes a rotational displacement state, and the concave portion is disposed at a position shifted from the engagement member housing unit,
In the state where the key plate is not inserted or in the state where the collation portion corresponds to the code hole of the inserted key plate, the second tumbler is inserted into the key plate into which the collation portion of the second tumbler is inserted. And the concave portion of the second tumbler is held in a neutral state arranged at a position displaced from the engaging member accommodating portion and does not correspond to the code hole of the inserted key plate. 2. The state according to claim 1, wherein in the state corresponding to the collating portion, the collating portion assumes a rotational displacement state, and the concave portion is disposed at a position corresponding to the engaging member accommodating portion. Locking device.   The side surface in the rotation direction of the tumbler of the collation part is inclined inward in the width direction as it goes to the front end side of the collation part as seen from the axial direction of the rotation shaft. The locking device as described.   The lock device according to any one of claims 1 to 3, wherein the shape of the collating portion is formed so as to match when viewed from the insertion direction of the key plate with respect to the key hole.   The lock device according to claim 1, wherein the key plate is a card-type key formed in a card shape as a whole.

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