JP2008214972A - Button lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mechanical button lock device which has a button for setting a lock in an unlocking state, and prevents the button from being easily known to outsiders when set in a storage main body. <P>SOLUTION: The button lock device is comprised of a button locking mechanism 50 which has a plurality of depressible buttons 52, turns from a state where a movable member 40 is locked to an unopenable position to a state where the movable member becomes movable to an openable position when a predetermined one or a predetermined number of the buttons 52 are depressed, and returns the depressed buttons during a time period in which the movable member 40 moves from the unopenable position to the openable position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for locking and unlocking a cabinet or the like.

  As a technology for locking and unlocking the cabinet, the device main body mounted on the outer surface side of the door is covered with a shielding member that can be opened and closed so that the handle of the cabinet can be exposed and shielded outside, and the shielding member is locked in a shielding state. There is a lock device that incorporates a lock portion that releases the lock in accordance with the unlocking operation.

  There is also known a button lock that has a plurality of buttons and that is operated by pushing a predetermined combination of buttons to change from a locked state to an unlocked state.

  The former technique is disclosed in, for example, Patent Document 1, and the latter technique is disclosed in, for example, Patent Document 2.

JP 2006-257822 A Japanese Examined Patent Publication No. 62-54951

  By the way, in a mechanical button lock, it is normal that a predetermined combination of buttons is maintained in an unlocked state while being pushed. Then, when applying the button lock to the former locking device, the unlocking state can be achieved by observing the push state of the button by a person other than the authorized user with the shielding member opened. There is a problem that it is possible to know the combination of buttons to do.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to prevent others from easily knowing a button for unlocking when a mechanical button type locking device is installed in a storage main body.

  A first aspect is a button-type locking device that is attached to an opening / closing member that is openable and closable with respect to a storage main body, and the device main body that can be attached to the opening / closing member and the opening / closing member cannot be opened. A movable member that is movable between an unopenable position to be opened and an openable position that enables the opening operation of the opening and closing member, and a plurality of buttons that can be pushed in, and a predetermined one of the plurality of buttons When one or more buttons are pressed, the movable member is moved from the locked state to the unopenable position to the unlockable position, and the movable member is moved from the unopenable position. A button-type lock mechanism that returns the button that has been pushed in until it is moved to the openable position.

  In the second aspect, the button-type lock mechanism section includes a plurality of buttons disposed on the movable member so as to be able to be pushed from a projecting position to a pushing position, and each button is directed to the projecting position. A button urging member that urges, a button pressing plate that is movable between a button pressing state maintaining position that maintains each pressed button at the pressing position and a button releasing position that releases the maintaining state; and A button maintaining plate urging member that urges the button maintaining plate toward the button pressing state maintaining position, and the button maintaining plate as a button as the movable member is moved from the unopenable position to the openable position. A button maintaining plate moving member that moves toward a release position, and the movable member in response to a pressing operation of one or more predetermined buttons among the plurality of buttons. A lock that is movable between a movement prohibition position that is maintained at an unopenable position and a movement allowable position that allows the movable member to be moved to the openable position, and that holds the buttons in a pressed state at the movement allowable position. A plate, a locking posture that engages with the apparatus main body in a state where the lock plate is in the movement prohibition position and prohibits movement of the movable member, and the apparatus in a state where the lock plate is in the movement allowable position. It is possible to change the posture between a non-locking posture that releases the engagement with the main body and allows the movable member to move, and the lock plate is in a state after the posture is changed to the non-locking posture. And a lock member that allows movement from the movement allowable position toward the movement prohibition position.

  In a third aspect, the lock member is provided with a contact portion to the lock plate, the posture of the lock member is freely changeable between a first posture and a second posture, and the lock member is A lock member urging member that urges toward the first posture is provided, and when the lock member changes its posture from the locked posture to the non-locked posture, the posture is changed from the first posture to the second posture. The lock plate is in contact with the lock plate in the movement-inhibited position and in the movement-permitted position with respect to the contact portion of the lock member in the first posture. It is not in contact with the plate, and is not in contact with the lock plate in either the movement prohibition position or the movement allowable position with respect to the contact portion of the lock member in the second posture. That in which the attitude changing allowing hole portion is formed.

  In a fourth aspect, the posture change allowance hole is a hole formed at a position facing the contact portion of the lock member in the first posture in a state where the lock plate is in the movement allowance position. The lock plate is formed at a position facing the contact portion of the lock member in the second posture in a state where the lock plate is in the movement allowable position and the movement prohibition position, and is provided adjacent to the hole. This is a substantially L-shaped hole having a long hole extending along the moving direction.

  A fifth aspect includes a lock plate urging portion that urges the lock plate toward the movement prohibition position, and a lock release switch that moves the lock plate from the movement prohibition position toward the movement allowable position. In addition.

  A sixth aspect is a button-type locking device that is changed from a locked state to an unlocked state by pressing a predetermined one or a plurality of buttons out of a plurality of buttons. A plurality of buttons that have a hanging portion protruding from the back side, and are disposed so as to be able to be pushed and rotated freely from the protruding position to the pushing position, and to determine whether the lock state is to be released or not according to the rotation posture. And is disposed so as to be rotatable at a position facing the drooping portion and movable along the push-in operation direction of the button, and the distal end portion of the drooping portion is in a rotation state and movable along the push-down operation direction of the button. A plurality of button receiving portions each having a rotation recessed portion to be held, a base plate for supporting each button receiving portion from the opposite side of each button, and urging each button and each button receiving portion in a separating direction. Multiple A pressing portion protruding toward the opposite side of each button is formed at the center of each button receiving portion, and a receiving portion side rotation portion is formed around the pressing portion. The base plate has a plurality of holes into which the respective pushing portions can be inserted, and a plate side rotation portion that engages with each reception portion side rotation portion and stops the button reception portion. By forming and pushing the push-in part through the hole, the engagement between the receiving part side turning part and the plate side turning part is released, and the button receiving part can be rotated together with the button. Is.

  According to the button-type lock device according to the first aspect, the button-type locking device has a plurality of buttons that can be pushed in, and the movable member is opened by pressing one or more buttons out of the plurality of buttons. A button-type lock mechanism that returns from the locked state to the openable position and returns the pressed button until the movable member moves from the unopenable position to the openable position. Therefore, when the movable member is moved to the openable position, the pushed button returns. For this reason, when installing a mechanical button type locking device in the storage main body, it is possible to prevent others from easily knowing the button for setting the unlocked state.

  According to the second aspect, the movable member can move to the openable position by changing the posture of the locking member to the non-locking posture. Then, the lock plate is allowed to move toward the movement prohibition position after the lock member is changed to the non-lock posture. Therefore, each button can be returned to the projecting position by moving the lock plate to the movement prohibition position while the movable member is moved to the openable position. Accordingly, it is possible to prevent others from easily knowing the button for making the unlocked state when the movable member is moved to the openable position.

  According to the third aspect, when the lock member is in the first posture and the lock plate is in the movement prohibition position, the contact portion is brought into contact with the lock plate and the posture change of the lock member to the non-lock posture is prohibited. Is done. In addition, when the lock plate is moved to the movement allowable position in a state where the lock member is in the first posture, the posture of the lock member is changed to the unlocked posture, and the movable member can be moved. At this time, since the posture of the lock member is changed to the second posture, the lock plate can be returned to the movement prohibited position while avoiding contact with the contact portion. Then, when the lock plate returns to the movement prohibition position, the pressing state of each button by the lock plate is released, and each button can return to the protruding position.

  According to the 4th aspect, since the said attitude | position change permission hole is a substantially L-shaped hole, a structure is comparatively simple.

  According to the fifth aspect, the lock plate urging portion that urges the lock plate toward the movement prohibition position, and the lock release switch that moves the lock plate from the movement prohibition position toward the movement allowable position; Therefore, the movable member can be moved by pressing the lock release switch. If the lock release switch is released while the movable member is moved to the openable position, the lock plate moves to the movement prohibition position and the button returns.

  According to the button type lock device concerning the 6th mode, while pushing parts which protrude toward the opposite side to each button are formed in the central part of each button receiving part, a receiving part is formed around the pushing part. A side stop portion is formed, and a plurality of hole portions into which the respective pushing portions can be inserted are formed in the base plate, and the button receiving portion is prevented from rotating by engaging with each receiving portion side stop portion. A plate side rotation stop is formed. Then, by pushing the push-in part through the hole part, the engagement between the receiving part side rotation part and the plate side rotation part is released, and the button reception part can be rotated together with the button. In this state, for example, the button main body can be picked and rotated. For this reason, it is possible to easily rotate the button without using a special jig and change the regulation as to whether or not to release the locked state.

  Hereinafter, the button type lock device according to the embodiment will be described.

<1. Applicable objects of button type lock device>
First, the overall configuration of a lockable storage device to which the button type lock device is applied will be described. FIG. 1 is a perspective view showing the overall configuration of the lockable storage device.

  The lockable storage device 10 includes a cabinet 12 as a storage device and a button-type lock device 20.

  The cabinet 12 includes a storage main body 14, doors 16 a and 16 b serving as opening / closing members that can be opened and closed with respect to the storage main body 14, and a drawer 18. More specifically, a storage space 14 a is formed in the upper half of the storage main body 14, and three storage spaces 14 b, 14 c, 14 d are formed in the lower half of the storage main body 14. Double-open doors 16a and 16b are attached to the opening of the storage space 14a so as to be freely opened and closed. Further, in each of the storage spaces 14b, 14c, 14d, a drawer 18 is provided so as to be opened and closed, in other words, can be pulled out and pushed in.

  When the doors 16a and 16b are closed, the joints of the doors 16a and 16b are arranged so as to overlap each other, and when one door 16a (the right side in FIG. 1) is closed, the other The door 16b (left side in FIG. 1) cannot be opened. Further, a handle portion 17a as an operation portion and a latch mechanism 17b are attached to one door 16a. The latch mechanism 17b is a mechanism that is incorporated in the door 16a and locks to keep the door 16a closed. As such a mechanism, various configurations including a known mechanism in which the claw portion is detachably engaged with the storage main body portion 14 side can be adopted. The handle portion 17a is attached to the outer surface side of the door 16a so that the posture can be freely changed. In conjunction with the change in the posture of the handle portion 17a, the latch mechanism 17b locks the door 16a to be closed or releases the locked state.

  Then, by closing the doors 16a and 16b, the latch mechanism 17b is locked and the doors 16a and 16b are kept closed. Further, in this state, by performing a release operation so as to pull the handle portion 17a, the locked state of the latch mechanism 17b is released, and the door 16a can be opened. Further, the door 16b can be opened by opening the door 16a. That is, the handle part 17a functions as an operation part for releasing the locked state of the doors 16a and 16b.

  Moreover, the drawer | drawing-out part 18 is formed in the bowl shape opened upwards, and has the handle part 19a, the operation lever 19b, and the latch mechanism 19c.

  The latch mechanism 19c is incorporated in a portion on the front surface side of the drawer portion 18, and is a mechanism that locks the drawer portion 18 so as to keep it closed. As such a mechanism, various configurations including a well-known mechanism in which the claw portion is detachably engaged with the storage main body portion 14 can be adopted.

  The handle portion 19 a is a gripping member provided for facilitating the extraction of the extraction portion 18, and is provided on the front surface of the extraction portion 18. The operation lever 19b is attached to the inside of the handle portion 19a so that the posture can be changed. In conjunction with the change in the attitude of the operating lever 19b, the latch mechanism 19c locks the drawer 18 so as to be closed or releases the locked state. That is, the operation lever 19b functions as an operation unit for releasing the locked state of the drawer 18.

  Then, by closing the drawer portion 18, the latch mechanism 19c is locked, and the drawer portion 18 is kept closed. Further, in this state, by grasping and operating the operation lever 19b, the locked state of the latch mechanism 19c is released, and the drawer portion 18 can be pulled out by grasping the handle portion 19a.

  This button type lock device 20 is attached to the outer surface of the door 16a and the drawer part 18 in the cabinet 12 as described above. More specifically, as shown by a two-dot chain line in FIG. 1, the button-type locking device 20 includes a position that covers the handle portion 17 a in the door 16 a, and a position that covers the handle portion 19 a and the operation lever 19 b in each drawer portion 18. Mounted in position.

  The button-type lock device 20 may be configured to be retrofitted to the cabinet 12 or may be configured to be attached from the beginning. Further, the button-type lock device 20 may be configured so as to be inseparably integrated with the cabinet 12.

<2. Button-type locking device>
<2-1. Overall configuration of the button-type lock device>
The overall configuration of the button-type lock device 20 will be described. 2 is an exploded perspective view showing the button-type locking device, FIG. 3 is a schematic perspective view showing the button-type locking device in a state where the movable member has moved to the openable position, and FIG. 4 is a position where the movable member cannot be opened. It is a schematic perspective view which shows the button type locking device in the state which moved to (2).

  The button-type lock device 20 includes a device main body 22, a movable member 40, and a button-type lock mechanism 50.

  The apparatus main body 22 is a member attached to the front surface of the door 16a as the opening / closing member or the drawer 18 and has a window 25 that exposes the handle 17a or the operation lever 19b as the operation unit. The apparatus main body 22 supports the movable member 40 so as to be movable between an openable position and an unopenable position. When the movable member 40 is moved to the open position (see FIG. 3), the handle 17a or the operation lever 19b is exposed from the window 25, while the movable member 40 is moved to the unopenable position. (See FIG. 4) The movable member 40 covers the handle portion 17a or the operation lever 19b in an inoperable manner.

  More specifically, the apparatus main body 22 has a plate-like member 24 and a pair of guide rails 26.

  The plate-like member 24 is formed into a plate-like member having a larger extent than the handle portion 17a and the operation lever 19b, here, a substantially square plate-like member. Further, the plate-like member 24 has a window portion 25 large enough to expose the handle portion 17a or the operation lever 19b. In this case, a substantially rectangular window portion 25 is provided at one end side portion of the plate-like member 24. Is formed. The plate-like member 24 is attached and fixed to the front surface of the door 16a or the drawer portion 18 so that the handle portion 17a or the operation lever 19b is exposed through the window portion 25. This plate-like member 24 is attached and fixed to the front surface of the door 16a and the drawer portion 18 in such a manner that it cannot be easily removed, such as a strong adhesive, a strong adhesive tape, screwing, welding or the like.

  In addition, the edge of one end of the plate-like member 24 with respect to the window portion 25 is formed into a thick portion 24a having a larger thickness than the other portions. The thick portion 24 a has a role of preventing the movable member 40 from being pulled out from one end portion of the plate-like member 24.

  Further, the plate-like member 24 is formed with a first operation hole 24b and a second operation hole 24c. The first operation hole 24b and the second operation hole 24c are used as a configuration for operating the button type locking mechanism 50, as will be described in detail later.

  The pair of guide rails 26 have guide grooves 28 that support the movable member 40 so as to be movable between the unopenable position and the openable position on the plate-like member 24. More specifically, the guide rail 26 is formed in a rod-like member, and is fixed to both side portions of the plate-like member 24 by screwing or the like along the edge portion. Further, a guide groove 28 extending along the longitudinal direction is formed on the surfaces of the pair of guide rails 26 facing each other. Each guide groove 28 is closed at the end on the side where the movable member 40 moves to the unopenable position, and is open at the end on the side where the movable member 40 moves to the openable position. As a result, the movable member 40 can be attached to each guide groove 28 from the open end side, and prevention from coming off from the closed end side is achieved.

  Each guide groove 28 is formed with a position restricting recess 28 a and a retaining recess 29. The position restricting recess 28a is formed at a position where it can be engaged so that a retaining piece 44 described later fits in a state where the movable member 40 has moved to the unopenable position. The retaining recess 29 is formed at a position where it can be engaged so that a retaining piece 44 described later fits in a state where the movable member 40 has moved to the openable position.

  The movable member 40 is detachably attached to the apparatus main body 22 and, when attached to the apparatus main body 22, the handle 17a or the operating lever 19b cannot be opened (see FIG. 4). And a position where the handle 17a or the operation lever 19b can be opened (see FIGS. 3 and 5).

  More specifically, the movable member 40 is formed in a flat, generally bowl-like shape that can be disposed between the pair of guide rails 26. That is, in the direction connecting the pair of guide rails 26, the movable member 40 has a dimension slightly smaller than the dimension between the pair of guide rails 26. Further, in the extending direction of the pair of guide rails 26, the movable member 40 has a dimension capable of exposing and closing the window part 25, that is, in the extending direction of the guide rail 26, from the dimension of the window part 25 in the same direction. And is smaller than the dimension obtained by subtracting the dimension of the window portion 25 from the dimension of the plate-like member 24 in the same direction.

  In addition, guide protrusions 42 are provided at both ends of the outer surface on both sides of the movable member 40 along the extending direction of the both sides. Each guide protrusion 42 has a long shape that is movable along the guide groove 28. A groove 42g is formed on the outer surface of each guide projection 42 along the extending direction.

  Then, the guide protrusions 42 on the outer surfaces on both sides of the movable member 40 are inserted into the guide grooves 28 of the pair of guide rails 26 from the release end side thereof, so that the guide protrusions 42 are connected to the pair of guide rails 26. It is supported so as to be movable along the guide groove 28. As a result, the movable member 40 is on one main surface of the plate-like member 24 and the window portion 25 is closed between the pair of guide rails 26, whereby the handle portion 17a or the operation lever 19b through the window portion 25 is closed. It is movable between an unopenable position (see FIG. 4) that disables the operation and an open position (see FIG. 3) that allows the handle portion 17a or the operation lever 19b to be operated by opening the window portion 25. Supported by

  The movable member 40 is provided with a retaining piece 44 that protrudes while being urged toward the guide groove 28 of the pair of guide rails 26 (see FIG. 2). Here, a retaining piece 44 is provided in each of the central portions of the outer surfaces of the movable member 40 in the longitudinal direction.

  The retaining piece 44 is formed in an elongated shape with one end narrow and the other end wide. The narrow portion of the retaining piece 44 is pivotally supported on both side portions of the movable member 40 in a posture in which the wide portion 45 of the retaining piece 44 is directed toward the release end side of the guide groove 28. In a state where the narrow width portion of the retaining piece 44 is pivotally supported on both side portions of the movable member 40, the projecting posture in which the wide portion 45 of the retaining piece 44 projects from both outer surfaces of the movable member 40, and the wide portion 45. The posture of the movable member 40 can be changed between the retracted posture in which the movable member 40 is retracted to both outer surface sides. Further, a torsion coil spring (not shown) is attached to the shaft support portion of the retaining piece 44 as an urging means for urging the retaining piece 44 in the protruding direction.

  When the movable member 40 moves between the unopenable position and the openable position, the retaining pieces 44 move in the guide grooves 28 of the pair of guide rails 26, respectively. When the movable member 40 is moved to the unopenable position, each retaining piece 44 engages with the position restricting recess 28a by the urging force in the protruding direction. Thereby, the movable member 40 is stopped and held at the unopenable position. On the other hand, in the state where the movable member 40 has moved to the openable position, each retaining piece 44 engages with the retaining recess 29 by the urging force in the protruding direction. Thereby, the movable member 40 is stopped and held in the openable position in a positioning manner.

  Here, the position restricting recess 28a is formed in a substantially U-shaped concave shape whose depth dimension gradually increases from both ends toward the substantially central portion along the extending direction of the guide groove 28. . Further, a portion of the retaining recess 29 on the closed end side along the extending direction of the guide groove 28 is formed as an inclined guide surface that gradually becomes deeper toward the substantially central portion. On the other hand, a portion of the retaining recess 29 on the open end side along the extending direction of the guide groove 28 is formed on a retaining surface 29 b that drops substantially vertically along the extending direction of the guide groove 28. .

  The end of the wide portion 45 of the retaining piece 44 is formed on a contact surface 45a that is substantially vertical along the extending direction of the guide groove 28 with the retaining piece 44 protruding. .

  When the movable member 40 is moved in a state where the main retaining piece 44 is fitted in the position restricting recess 28a, the retaining piece 44 is retracted while being in contact with the inclined surface of the position restricting recess 28a. It is easily detached from the recess 28a. Further, when the movable member 40 is moved to the closed end side of the guide groove in a state where the permanent retaining piece 44 is fitted in the retaining recess 29, the retaining piece 44 is retracted while being in contact with the inclined guide surface. , Easily detached from the retaining recess 29.

  On the other hand, when the movable member 40 is moved to the open end side of the guide groove 28 in a state where the permanent retaining piece 44 is fitted in the retaining recess 29, the contact surface 45 a of the retaining piece 44 is prevented from being removed. 29 abuts against the retaining surface 29b, and their engagement state is maintained. Thereby, the movement of the movable member 40 from the openable position to the release end side of the guide groove 28 is restricted.

  The movable member 40 can be detached from the apparatus main body 22 by releasing the engagement between the retaining piece 44 and the retaining recess 29 with the following configuration.

  In other words, in the state where the main retaining piece 44 is fitted in the retaining recess 29, the projecting dimension of the retaining piece 44 on the closed end side of the guide groove 28 gradually decreases toward the closed end side. It is comprised so that it may become the separation inclined surface 45b. The retaining piece 44 is configured to be retractable by receiving a release operation force from the closed end side to the separation inclined surface along the guide rail 26.

  That is, a tool having a straight bar portion is prepared as a jig for removal. Then, the straight bar-shaped portion is inserted obliquely from the closed end side of the guide groove 28 of the guide rail 26 and inserted into the groove portion 42 g of the guide protrusion 42. Then, the straight bar-like portion is inserted deeper, the tip portion thereof is brought into contact with the separation inclined surface 45b of the retaining piece 44, and the release operation force is applied so as to be pushed in strongly. Then, in response to the release operation force, the retaining piece 44 retracts against the urging force of the torsion coil spring. As a result, the engagement between the retaining piece 44 and the retaining recess 29 is released, and the movable member 40 can move to the open end side of the guide groove 28. Therefore, the movable member 40 can be detached from the apparatus main body 22 by moving the movable member 40 to the open end side of the guide groove 28 in the above state.

  In the present embodiment, the movable member 40 covers the handle portion 17a and the operation lever 19b as the operation portion at the unopenable position so as not to be operable, and operates the handle portion 17a and the operation lever 19b as the operation portion at the openable position. Although it demonstrated in the aspect exposed as possible, it is not necessarily restricted to the said structure. For example, the movable member 40 may abut against the components of the latch mechanisms 17b and 19c at the unopenable position to restrict the latch to be unreleased, and release the restriction at the openable position. In short, it is only necessary that the doors 16a and 16b as the opening and closing members and the drawer portion 18 can be opened at the unopenable position and can be opened at the openable position.

  The button-type lock mechanism 50 has a plurality of (here, ten) buttons 52 that can be pushed in, and is incorporated in the movable member 40. The button-type lock mechanism 50 locks the movable member 40 at the unopenable position in a state where the push operation to the button 52 is not applied. Then, when one or more predetermined buttons 52 among the plurality of buttons 52 are pushed in, the movable member 40 is brought into an unlocked state where the movable member 40 can be moved to the unopenable position. In addition, each of the pushed buttons 52 is returned until the movable member 40 moves from the unopenable position to the openable position.

<2-2. Configuration of Button Type Locking Mechanism>
The button type lock mechanism 50 will be described in more detail. FIG. 5 is an explanatory view showing a button type locking mechanism, and FIG. 6 is a schematic sectional view taken along line IV-IV in FIG.

  The button-type lock mechanism 50 includes a plurality of buttons 52, a button maintenance plate 60, a button maintenance plate moving member 70, a lock plate 80, and a lock member 90. The lock plate 80 and the lock member 90 function as a button-type lock switching mechanism that switches from a locked state to an unlocked state in response to a pressing operation of a predetermined one or a plurality of combinations of buttons 52.

  Each button 52 is disposed so as to be able to be pushed in from the protruding position protruding from the front surface of the movable member 40 toward the pressing position. Each button 52 is assigned a certain identification code (for example, a number such as 0 to 9 or a letter such as an alphabet) for the convenience of the operator. The identification code is usually displayed on the surface of the button 52 or the like, but is omitted here. Then, when the operator presses one or more predetermined buttons 52 in advance, the lock state of the button type lock mechanism unit 50 is released.

  The button maintenance plate 60 is a member that temporarily maintains the pressed buttons 52 in the pressed state. Further, the button maintaining plate moving member 70 moves the button maintaining plate 60 when moving the movable member 40 from the unopenable position toward the opening allowable position, thereby maintaining each button 52 by the button maintaining plate 60. The state is to be released. In the actual operation state, each button 52 is maintained in the pushed state by both the button maintenance plate 60 and the lock plate 80, so that when both the maintenance states are released, each button 52 is in the original protruding position. Return to.

  The lock plate 80 is a member that can move from the movement prohibition position toward the movement allowable position only when the operator presses a predetermined one or more predetermined buttons 52. When the lock plate 80 moves toward the movement allowable position, the lock member 90 changes its posture to the unlocked position, and the movable member 40 can move from the unopenable position to the openable position.

<2-2a. Interrelationship between Button, Button Maintenance Plate and Lock Plate>
First, the mutual relationship among the plurality of buttons 52, the button maintenance plate 60, and the lock plate 80 will be mainly described.

  7, 8, and 11 to 13 are explanatory diagrams showing operations related to a button that is defined for release, and FIG. 7 shows an interrelationship between one button, a button maintenance plate, and a lock plate in an initial state. FIG. 8 shows the state of FIG. 7 from above, FIG. 11 shows the state of pushing the button, FIG. 12 shows the state of moving the lock plate to the movement allowable position, FIG. 13 shows a state where the button maintenance plate is moved to the button release position. 9 and 10 are explanatory diagrams showing how the buttons are rotated. 14 and 15 are explanatory diagrams showing operations related to buttons not defined for release, FIG. 14 shows an initial state, and FIG. 15 shows a state where the button is pushed.

  As shown in FIGS. 5 to 15, the movable member 40 has a casing 41 whose bottom surface is open, and button attachment holes 41 h corresponding to the buttons 52 are formed in the front surface of the casing 41. . Each button 52 is provided so as to be freely movable between the protruding position and the pushing position through the button mounting hole 41h.

  The button 52 includes a button body 53 having a substantially short cylindrical shape and a button hanging portion 54 that protrudes from the back side of the button body 53. The button 52 is supported by the casing 41 so that it can be pushed and rotated. A flange-like protruding portion 53 a that protrudes outward is formed on the peripheral edge of the button main body 53 on the proximal end side. The outer peripheral surface of the hook-shaped protruding portion 53 a is formed as a tapered guide surface 53 g that sequentially expands toward the distal end side of the button main body portion 53. The button suspending portion 54 has a configuration in which a lock plate restricting portion 55 and a button rotation restricting portion 56 are connected in a columnar shape. On the surface substantially orthogonal to the pushing direction of the button 52, the cross-sectional shape of the lock plate restricting portion 55 has a shape obtained by cutting a part of a circle along the string. Similarly, a part of the circle is cut along the string. The cut portion 55a of the lock plate restricting portion 55 and the cut portion 56a of the button rotation restricting portion 56 are in a positional relationship of being rotated half a turn (180 °) about the center axis of the button 52 (see FIG. 8). . The cut portions 55a and 56a include not only a portion cut after the formation but also a concave portion formed in a cut shape when the mold is formed. The position of the cut portion 55a of the lock plate restricting portion 55 defines one or a plurality of combinations of the buttons 52 for releasing the lock of the button type lock mechanism portion 50, as will be described later. Each button 52 defines whether or not the lock state is to be released according to each rotation posture.

  Further, a button receiving portion 57 is provided on the bottom surface side of the movable member 40 so as to be rotatable to a position facing the button 52 and movable along the pushing operation direction of the button 52. The button receiving portion 57 has a button rotation recessed portion 57 a corresponding to the outer peripheral shape of the button rotation restricting portion 56. The button rotation restricting portion 56 is movable in the button rotation recessed portion 57a along the pushing direction of the button 52 and is held in a non-rotating state. A spring fixing hole 57b is formed at the bottom of the button rotation recess 57a. A coil spring 58 as a button urging member that urges the button 52 and the button receiving portion 57 away from each other and urges the button 52 toward the protruding position is formed by the spring fixing hole 56h and the main spring fixing hole 57b. The compression interposition is arranged between the two.

  In addition, a push-in portion 57c that protrudes toward the opposite side of the button 52 is formed in the central portion of the button receiving portion 57 on the side opposite to the button 52. A stop pin 57d is formed as a receiving part side stop at a position away from the receiver. Here, the rotation pin 57d is formed in two places which pinch | interpose the said pushing part 57c.

  Further, a base plate 47 provided on the bottom surface of the movable member 40 is disposed at a position for supporting each button receiving portion 57 from the opposite side of the button 52, and the pushing portion 57c can be inserted into the base plate 47. A fitting hole 47c is formed, and a fitting hole 47c that engages with the rotation pin 57d and stops is formed. The button receiving portion 57 is supported in a non-rotating state on the inner surface side of the base plate 47 in a state where the respective pushing portions 57c and the rotation stop pins 57d are fitted into the fitting holes 47c and 47d.

  Further, in this state, when the pushing portion 57c is pushed from the back surface side of the movable member 40 by hand or using a predetermined jig (see FIG. 9), the rotation pin 57d and the fitting hole portion 47d are separated. These engagements are released and released. Thereby, the button receiving part 57 can be rotated around the central axis of the button 52 together with the button 52. For example, the protruding portion of the button 52 can be picked and rotated while the pressing portion 57c is pressed. As a result, the position of the cut portion 55a of the lock plate restricting portion 55 can be disposed at a position half-rotated around the central axis of the button 52 (see FIG. 14).

  The formation positions of the rotation pin 57d and the fitting hole portion 47d are not limited to the above example, and three positions are provided at rotationally symmetric positions around the center axis of the button receiving portion 57 (preferably 180 ° rotationally symmetric positions in this embodiment). It may be provided as described above, and a large number of convex portions may be formed in a gear shape. Moreover, a hole or a concave portion may be formed on the button receiving portion 57 side, and a convex portion may be formed on the base plate 47 side. In short, the button receiving portion 57 and the base plate 47 are engaged with each other to engage and the button receiving portion 57 is locked, and the button receiving portion 57 and the base plate 47 are separated from each other to release the engaged state. Any configuration may be used as long as the receiving portion 57 can rotate.

  Thus, by changing the position of the cut portion 55a of the lock plate restricting portion 55, it is possible to change one or a plurality of combination rules of the button 52 for releasing the lock of the button type lock mechanism portion 50. it can. Here, the button 52 (see FIGS. 7 to 13) in which the cut portion 55 a of the lock plate restricting portion 55 is oriented toward the movement prohibition position of the lock plate 80 is defined for release. Further, a button (see FIGS. 14 and 15) in which the cut portion 55a of the lock plate restricting portion 55 is oriented toward the movement allowable position side of the lock plate 80 is defined as non-release. Then, by pressing only the button 52 defined for release, a lock plate 80 described later can move toward the movement allowable position.

  The button maintenance plate 60 is formed in a plate shape that can be moved within a predetermined range within the casing 41 (see FIG. 5 and FIG. 6), the button pressed state maintenance position (position of FIG. 5), and the button release. It is disposed so as to be freely movable between the positions (the state moved to the right side of FIG. 5, see FIG. 13). The button maintaining plate 60 is urged toward the button pressing state maintaining position by a coil spring 61 as a button maintaining plate urging member that is compressed and interposed between one side of the button maintaining plate 60 and the inner surface of the casing 41. (See FIG. 5).

  The button maintaining plate 60 is configured to maintain each button 52 in the pressed position at the button pressed state maintaining position and to release the maintained state of each button 52 at the button release position. More specifically, loose insertion holes 62 are formed at positions corresponding to the buttons 52 in the button maintenance plate 60. Each button 52 is movable through each loose insertion hole 62 regardless of whether the button maintaining plate 60 is in the button pressed state maintaining position or the button releasing position (see FIGS. 11 to 13). ).

  A button maintaining spring piece 64 is provided corresponding to each loose insertion hole 62. The button maintenance spring piece 64 rises from the peripheral edge of each loose insertion hole 62 toward the protruding direction of the button 52 and is inclined from the tip thereof toward the center of the loose insertion hole 62 toward the pushing direction of the button 52. It is constituted by a leaf spring. When the button 52 is pushed while the button keeping plate 60 is in the button pushing state keeping position, the tapered guide surface 53g of the hook-like protrusion 53a of the button 52 comes into contact with the tip of the button keeping spring piece 64. The tip of the lever is elastically deformed to the outer peripheral side of the loose insertion hole 62. When the button 52 is further pushed, the button retaining spring piece 64 is elastically restored to its original shape so that the tip of the button retaining spring piece 64 gets over the hook-shaped protrusion 53a. Then, the tip of the button maintaining spring piece 64 comes into contact with the surface on the protruding direction side of the hook-shaped protruding portion 53a, and the button 52 is maintained in the pushed position (see FIG. 11). Further, in this state, when the button maintenance plate 60 is moved to the button release position, that is, when the button maintenance plate 60 is moved to the right from the state of FIG. The position of the button 52 is released and the maintenance of the button 52 is released (see FIG. 13).

  The lock plate 80 is formed in a plate shape that fits within the casing 41 and is movable within a predetermined range (see FIGS. 5 and 6), a movement prohibited position (position in FIG. 5) and a movement allowable position (FIG. 5). In a state of moving rightward from the position (see FIGS. 12 and 13). The lock plate 80 is urged toward the movement prohibition position by a coil spring 81 as a lock plate urging member that is compressed and interposed between the one side portion and the inner surface of the casing 41.

  The lock plate 80 maintains the movable member 40 at the unopenable position by restricting the posture change of the lock member 90 at the movement-inhibited position and allows the posture change of the lock member 90 at the movement-permitted position. The movable member 40 is movable from the unopenable position toward the openable position. The configuration in which the lock plate 80 restricts the posture change of the lock member 90 and permits the posture change will be described in detail later.

  The lock plate 80 can be moved from the movement prohibition position to the movement allowable position in accordance with the pressing operation of each button 52, and can be maintained in the pressed state at the movement allowable position. Yes. More specifically, a restriction hole 82 is formed at a position corresponding to each button 52 in the lock plate 80. Each regulation hole 82 is formed in a size and shape that satisfy the following conditions. That is, with respect to the button 52 defined for release, the peripheral portion of the restriction hole 82 abuts against the button rotation restricting portion 56 with the button 52 in the protruding position, and the lock plate 80 is allowed to move from the movement prohibited position. The movement to the position is restricted (see FIG. 7). Further, in a state where the button 52 is in the pushing position, the lock plate 80 moves from the movement prohibition position to the movement allowable position so that the peripheral edge portion of the restriction hole 82 enters the cut portion 55a of the lock plate restriction portion 55. Allowed (see FIGS. 11 to 13). On the other hand, with respect to the button 52 defined for non-release, the lock plate 80 is positioned so that the peripheral edge of the restricting hole 82 enters the cut portion 56a of the button rotation restricting portion 56 with the button 52 in the protruding position. It is allowed to move from the movement prohibited position to the movement allowable position (see FIG. 14). Further, when the button 52 is in the pushed position, the peripheral edge portion of the restriction hole 82 abuts against the lock plate restriction portion 55 to restrict the lock plate 80 from moving from the movement prohibited position to the movement allowable position (FIG. 15). reference). Therefore, the lock plate 80 can move from the movement prohibition position to the movement allowable position in a state where only the button 52 restricted for release is pushed.

  Further, the lock plate 80 has the button rotation restricting portion 56 at the periphery of the restricting hole 82 so that the peripheral portion of the restricting hole 82 enters the cut portion 55a of the lock plate restricting portion 55 at the movement allowable position. Abut. Thereby, each button 52 is maintained in the pushed-in state (see FIG. 12). Then, by moving to the movement prohibition position, the maintenance state due to the contact is released, and the button 52 can be returned to the protruding position.

  Note that a switch portion 49 is disposed so as to be able to be pushed at a side position of the movable member 40 opposite to the coil springs 61 and 81. The inside of one end (upper part in FIG. 5) of the switch part 49 is in contact with the extending piece 81P extending from the lock plate 80 toward the side, and the inside of the other end part (lower part in FIG. 5) of the switch part 49. Is in contact with an extending piece 61P extending from the button maintaining plate 60 toward the side. Then, by pushing one end of the switch part 49 (upper part in FIG. 5), the lock plate 80 can be moved from the movement prohibition position to the movement allowable position against the biasing force of the coil spring 81. By pushing the other end (lower part of FIG. 5), the button maintaining plate 60 can be moved from the button pressing state maintaining position to the button releasing position against the biasing force of the coil spring 61. . The button maintaining plate 60 and the lock plate 80 may be configured to move by separate buttons or other pushing mechanisms.

<2-2b. Button maintenance plate moving member>
The button maintenance plate moving member 70 will be described. FIG. 16 is a schematic plan view showing the button maintenance plate and the lock member, and FIG. 17 is an explanatory view showing the operation of the button maintenance plate.

  As shown in FIGS. 5, 6, 16, and 17, the button maintaining plate moving member 70 releases the button maintaining plate 60 as the movable member 40 is moved from the unopenable position toward the openable position. It is a member that is moved toward the position. More specifically, the button maintenance plate 60 is a long member attached to the inner surface side of the base plate 47. That is, a rod-shaped support shaft portion 78 is supported on the inner surface side of the base plate 47. One end of the button maintaining plate moving member 70 is swingably supported by one end of the support shaft 78. The button maintaining plate moving member 70 is formed with a slidable convex portion 72 that protrudes in a substantially triangular shape on the side of the elongated main body 71 on the side of the base plate 47, and the button maintaining plate of the main body 71. The plate operating piece 73 that protrudes toward the button maintaining plate 60 is provided on the side portion on the 60 side.

  The slidable contact projection 72 can be protruded and retracted to the back side of the movable member 40 through a hole 47 a formed in the base plate 47. Further, the hole 47a formed in the base plate 47 is disposed at a position overlapping the first operation hole 24b of the plate-like member 24 of the apparatus main body 22 in a state where the movable member 40 is moved to the unopenable position. . Further, when the movable member 40 is moved to the openable position, the hole 47a is disposed at a position facing the plate member 24 at a position away from the first operation hole 24b.

  The plate operating piece 73 is fitted into an operation receiving hole 60 h formed in the button maintaining plate 60 through a notch 80 h formed in the lock plate 80.

  In the state where the movable member 40 is in the unopenable position, the sliding contact convex portion 72 is in a state of protruding into the hole portion 47a formed in the base plate 47 and the first operation hole 24b of the plate-like member 24, and the plate The operating piece 73 is in a state of being fitted into the operation receiving hole 60h of the button maintaining plate 60 in the button pressing state maintaining position (see the solid line in FIG. 17).

  When the movable member 40 is moved to the openable position from this state, the sliding contact projection 72 is detached from the first operation hole 24b and slidably contacts the main surface of the plate member 24, and the button maintaining plate moving member 70 is moved to the support shaft portion. The posture is changed around 78 (see the two-dot chain line in FIG. 17). As a result, the plate operating piece 73 comes into contact with the peripheral edge portion of the operation receiving hole 60h to move the button maintaining plate 60 toward the button release position.

  When the movable member 40 is moved to the unopenable position, the button maintaining plate 60 is moved back to the button pressed state maintaining position by the urging force of the coil spring 61, and the button maintaining plate moving member 70 is also moved to the original posture accordingly. Return to.

<2-2c. Lock member>
The lock member 90 will be described. 18 to 21 are views showing the operation of the lock member. FIG. 18 shows the operation of changing the posture of the lock member from the locked posture to the non-locked posture, and FIG. 19 shows the operation seen from the front end side of the lock member. 20 and 21 show the relationship between the locking member whose posture is changed to the non-locking posture and the member that restricts its movement.

  As shown in FIGS. 5, 6, 16, and 18 to 21, the lock member 90 is freely changeable between a locked posture and an unlocked posture, and after the posture is changed to the unlocked posture. Thus, the lock plate 80 is allowed to move from the movement allowable position toward the movement prohibited position. Here, the locked posture is a posture in which the lock plate 80 is engaged with the apparatus main body 22 while the lock plate 80 is in the movement prohibition position and the movement of the movable member 40 is prohibited. In this state, the engagement with the apparatus main body 22 is released and the movable member 40 is allowed to move.

  More specifically, the lock member 90 is a long member attached to the inner surface side of the base plate 47. That is, the other end portion of the lock member 90 is locked to the other end portion of the support shaft portion 78 supported on the inner surface side of the base plate 47 (see the solid line in FIG. 18) and the unlocked posture (two points in FIG. 18). (Refer to the chain line). The other end portion of the support shaft portion 78 is inserted in a state where play is provided in the shaft insertion hole of the lock member 90. Therefore, the lock member 90 is slightly within a predetermined range with respect to the support shaft portion 78. It can be tilted. A coil spring 79 is attached to the support shaft portion 78 as a lock member urging member that urges the lock member 90 to be substantially orthogonal to the support shaft portion 78. Accordingly, in a normal state, the lock member 90 is in a posture that is substantially orthogonal to the support shaft portion 78 (first posture, see FIG. 16), and the lock member 90 is applied by applying a force against the coil spring 79. Is inclined with respect to the support shaft portion 78 (second posture, see FIGS. 19 and 20).

  The lock member 90 includes an elongated lock member main body portion 91, a lock member sliding contact protrusion 92 that protrudes from a side portion of the lock member main body portion 91 on the base plate 47 side, and the lock member main body portion 91. And a lock abutting portion 93 protruding from a side portion on the lock plate 80 side.

  The lock member sliding contact projection 92 is formed in a fan-shaped shape with a central angle of approximately 90 °, and can project and retract to the back side of the movable member 40 through a hole 47 b formed in the base plate 47. Further, the hole 47b formed in the base plate 47 is disposed at a position overlapping the second operation hole 24c of the plate-like member 24 of the apparatus main body 22 in a state where the movable member 40 is moved to the unopenable position. . Further, when the movable member 40 is moved to the openable position, the hole 47b is disposed at a position facing the plate member 24 at a position away from the second operation hole 24c.

  Further, the lock abutting portion 93 is formed to have a protruding dimension that can be opposed to the back surface of the lock plate 80 in a state where the lock member 90 is in the locked posture.

  The base plate 47 includes a guide unit that changes the posture from the substantially orthogonal posture (first posture) to the inclined posture (second posture) when the lock member 90 changes the posture from the locked posture to the non-locked posture. As shown, a spring-shaped guide plate portion 48 is provided. The spring-like guide plate portion 48 is a belt-like member having spring properties, and has an inclined piece 48 a that is inclined in a direction away from the base plate 47. The inclined piece 48a is disposed at a position intersecting with the distal end portion of the lock member 90 in the first posture in a posture substantially orthogonal to the longitudinal direction of the lock member 90. Further, the inclined piece 48a is inclined so as to gradually move away from the lock member 90 from the distal end portion of the lock member 90 in the first posture toward the distal end portion of the lock member 90 in the second posture (see FIG. 19). ). The distal end portion of the lock member 90 is disposed between the inclined piece 48 a and the base plate 47. When the lock member 90 changes its posture from the locked posture to the non-locked posture, the distal end portion of the lock member 90 is guided to the lower surface of the inclined piece 48a, and the lock member 90 is moved from the first posture to the second posture. It is supposed to change. Further, when the lock member 90 is changed from the locked position to the non-locked position, the lock member 90 is released from the guidance by the inclined piece 48 a and returns to the first position by the biasing force of the coil spring 79.

  The lock plate 80 is formed with a posture change allowance hole 86. The posture change allowance hole portion 86 is a hole portion in which a hole portion 86a and a long hole portion 86b are connected in a substantially L shape.

  The hole 86a is formed at a position facing the lock contact portion 93 of the lock member 90 in the first posture in a state where the lock plate 80 is in the movement allowable position.

  The long hole portion 86b is formed at a position facing the lock contact portion 93 of the lock member 90 in the second posture in a state where the lock plate 80 is in the movement allowable position and the movement prohibition position. A long hole is formed adjacent to 86a along the moving direction of the lock plate 80.

  When the lock member 90 is in the first posture and the lock plate 80 is in the movement-inhibited position, the lock contact portion 93 contacts the lock plate 80 at a side position of the hole 86a and enters the unlocked posture. Changing the posture is restricted (see the dashed line in FIG. 16 and the solid line in FIG. 18). Further, in the same first posture, when the lock plate 80 is in the movement allowable position, the lock contact portion 93 is not in contact with the lock plate 80 so as to enter the hole portion 86a (two points in FIG. 16). (See chain line). As a result, the lock member 90 can be changed to an unlocked posture (see the two-dot chain line in FIG. 18). When the lock member 90 changes its posture from the locked posture to the non-locked posture, the spring-shaped guide plate portion 48 changes the posture of the lock member 90 from the first posture to the second posture. The long hole portion 86b enters from the hole portion 86a (see FIG. 20). When the lock member 90 is in the second posture, the lock contact portion 93 enters the elongated hole portion 86b and is not in contact with the lock plate 80 at either the movement prohibition position or the movement allowable position. . Accordingly, the lock plate 80 can return from the movement allowable position to the movement prohibited position while keeping the lock member 90 in the unlocked posture. When the lock plate 80 returns to the movement prohibition position, the pressing state of each button 52 by the lock plate 80 is released, and each button 52 can return to the protruding position.

<2-2d. Operation of the button-type lock device>
A series of operations of the button type lock device 20 will be described.

  First, in the initial state, all the buttons 52 are in the protruding position, the button maintaining plate 60 is in the button pushing state maintaining position, and the lock plate 80 is in the movement prohibiting position (see FIGS. 5 to 8 and 14). Further, the button maintenance plate moving member 70 is in a position to keep the button maintenance plate 60 in the button pushing state maintenance position (see the solid line in FIG. 17). Further, the lock member 90 is in the locked posture in the first posture, and the posture change to the non-locked posture is restricted by the lock plate 80 in the movement prohibition position (see the dashed line in FIG. 16 and the solid line in FIG. 18).

  In this state, as shown in FIG. 11, only the button 52 defined for release is pushed. Then, only the button 52 that has been pushed in is maintained in the pressed state by the button maintaining plate 60.

  If the wrong button 52 has been pushed, the other end of the switch 49 is pushed and the button maintenance plate 60 is moved to the button release position, so that all the buttons 52 return to the protruding position. And reset to the initial state.

  When one end of the switch portion 49 is pushed in the state where only the button 52 defined for release is pushed, the lock plate 80 moves from the movement prohibited position to the movement allowable position (see FIG. 12). At this time, if the button 52 defined for release is not pressed, the button rotation restricting portion 56 of the button 52 abuts on the peripheral portion of the restricting hole 82 of the lock plate 80, so that the lock plate 80 Cannot be moved to the movement allowable position (see FIG. 9). In addition, if the button 52 defined for non-release is pressed, the lock plate restricting portion 55 of the button 52 comes into contact with the peripheral edge portion of the restricting hole 82 of the lock plate 80. It cannot be moved to the movement allowable position (see FIG. 15). Therefore, the lock plate 80 can be moved from the movement prohibition position to the movement allowable position in a state where only the button 52 defined for release is pressed.

  Thus, when the lock plate 80 moves to the movement allowable position, the posture change of the lock member 90 from the locked posture to the non-locked posture is permitted. Thereby, the movable member 40 can be moved from the unopenable position toward the openable position.

  Then, the button maintaining plate moving member 70 moves the button maintaining plate 60 to the button releasing position as the movable member 40 is moved from the unopenable position to the possible position with one end of the switch 49 pushed in. (Refer to the two-dot chain line in FIGS. 13 and 17). Thereby, the maintenance of the pushed state of the button 52 by the button maintenance plate 60 is released. In the state where the button maintenance plate 60 is just moved to the button release position, the button 52 is maintained in the pushed state by the lock plate 80, so the button 52 does not return to the protruding position.

  Further, when the movable member 40 is moved from the unopenable position toward the possible position in a state where the one end portion of the switch portion 49 is pushed, the posture of the lock member 90 is changed from the locked posture to the non-locked posture. The lock member 90 changes its posture from the first posture to the second posture, and the lock contact portion 93 enters the elongated hole portion 86b. As a result, the lock plate 80 can be returned to the movement prohibition position while the lock member 90 is kept in the unlocked posture.

  When the pushing of the one end of the switch portion 49 is released in a state where the movable member 40 has reached the openable position, the lock plate 80 returns to the movement prohibited position by the biasing force of the coil spring 61. Then, the maintenance of the pushed state of the button 52 by the lock plate 80 is released. As a result, each button 52 returns to the protruding position by the biasing force of the coil spring 58.

  Thereafter, when the movable member 40 is moved to the unopenable position, the force that causes the button maintenance plate moving member 70 to move the button maintenance plate 60 toward the button release position is released. Then, the button maintaining plate 60 moves back to the button pressed state maintaining position by the urging force of the coil spring 61 and returns to the initial state.

  According to the button-type lock device configured as described above, it has a plurality of buttons 52 that can be pushed in, and is movable when a predetermined one or a plurality of buttons 52 are pushed. A button-type lock in which the member 40 is moved from the locked state to the openable position to the openable position, and the pressed button is returned until the movable member 40 moves from the unopenable position to the openable position. Since the mechanism portion 50 is provided, the button returns to the protruding position when the movable member 40 is moved to the openable position. More specifically, the movable member 40 can be moved to the openable position by changing the posture of the lock member 90 to the unlocked posture. Since the lock plate 80 is allowed to return and move toward the movement prohibition position after the lock member 90 is changed to the unlocked position, each button 52 can be returned to the protruding position. Therefore, in the mechanical button-type lock device 20, it is possible to prevent the button 52 for entering the unlocked state from being easily known to others when the movable member 40 is in the openable position. Moreover, since each button 52 returns to a protrusion position by moving the movable member 40 to an openable position, it is possible to prevent forgetting to reset each button 52.

  Further, since the coil spring 81 that biases the lock plate 80 toward the movement prohibition position and the switch unit 49 that moves the lock plate 80 from the movement prohibition position toward the movement allowable position are provided, the switch unit 49 is pushed. Thus, when the movable member 40 can be moved, the lock plate 80 moves to the movement prohibition position when the switch portion 49 is released in a state where the movable member 40 is moved to the openable position, and the button 52 is moved. Can be restored.

  The button-type locking device 20 has a push portion 57c formed at the center of each button receiving portion 57, and a stop pin 57d as a receiving portion side stop portion around the push portion 57c. The base plate 47 is formed with a fitting hole 47c into which the pushing part 57c can be inserted, and a fitting hole 47c that engages with the rotation pin 57d and stops. Then, by pushing in the pushing portion 57c, the engagement between the rotation pin 57d and the fitting hole portion 47c is released, and the button receiving portion 57 can be rotated together with the button 52. In this state, for example, the button body 53 can be grasped and rotated. For this reason, it is possible to easily rotate the button 52 without using a special jig to change whether the lock state is to be released.

  However, the above-described merit can be achieved even if a configuration capable of rotating the button 52 using a special jig is added.

  Note that this configuration is not limited to the button-type lock device 20 according to the present embodiment, and a button-type lock that is changed from the locked state to the unlocked state by pressing one or more predetermined buttons out of the plurality of buttons 52. In the apparatus, the present invention can be applied to all types in which whether or not to release the lock state is determined according to the rotation posture of the button 52.

It is a perspective view which shows the whole structure of the storage apparatus with a lock | rock. It is a disassembled perspective view which shows the button type locking device which concerns on embodiment. It is a schematic perspective view which shows the button type locking device in the state which the movable member moved to the position which can be opened. It is a schematic perspective view which shows the button type locking device in the state which the movable member moved to the unopenable position. It is explanatory drawing which shows a button type locking mechanism part. It is the IV-IV line schematic sectional drawing of FIG. It is a schematic sectional drawing which shows the mutual relationship of one button, a button maintenance plate, and a lock plate in an initial state. It is the schematic plan view which looked at the state of FIG. 7 from upper direction. It is explanatory drawing which shows a mode that a button is rotated. It is explanatory drawing which shows a mode that a button is rotated. It is a schematic sectional drawing which shows the state which pushed in the button. It is a schematic sectional drawing which shows the state which moved the lock plate to the movement permissible position. It is a schematic sectional drawing which shows the state which moved the button maintenance plate to the button release position. It is a schematic sectional drawing which shows the operation | movement regarding the button which is not prescribed | regulated as a thing for cancellation | release. It is a schematic sectional drawing which shows the operation | movement regarding the button which is not prescribed | regulated as a thing for cancellation | release. It is a schematic plan view which shows a button maintenance plate and a locking member. It is explanatory drawing which shows operation | movement of a button maintenance plate. It is explanatory drawing which shows the operation | movement which a lock member changes the attitude | position from a locked attitude | position to a non-locking attitude | position. It is explanatory drawing which shows the state which looked at operation | movement same as the above from the front end side of the lock member. It is explanatory drawing which shows the relationship between the locking member which changed the attitude | position to the non-locking attitude | position, and the member which controls the movement. It is explanatory drawing which shows the relationship between the locking member which changed the attitude | position to the non-locking attitude | position, and the member which controls the movement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 Cabinet 14 Storage main-body part 16a, 16b Door 20 Button type locking device 22 Apparatus main-body part 40 Movable member 41 Casing 47 Base plate 47c, 47d Insertion hole part 48 Spring-shaped guide plate part 48a Inclined piece 49 Switch part 50 Button type lock mechanism Part 52 Button 53 Button body part 54 Button hanging part 55 Lock plate restricting part 55a Cutting part 56 Button turning restricting part 56a Cutting part 57 Button receiving part 57a Button turning recessed part 57c Pushing part 57d Stopping pin 58 Coil spring 60 Button maintenance plate 60h Motion receiving hole part 61 Coil spring 64 Button maintenance spring piece 70 Button maintenance plate moving member 72 Sliding contact convex part 73 Plate operating piece 78 Support shaft part 79 Coil spring 80 Lock plate 81 Coil spring 82 Restriction hole 86 Posture change allowance Part 86a hole 86b elongated hole 90 locking member 92 locking member sliding protrusion tangent 93 locking contact portion

Claims (6)

A button-type locking device attached to an opening / closing member that can be opened and closed with respect to the storage main body,
An apparatus body that can be attached to the opening and closing member;
A movable member movable between an unopenable position that disables the opening operation of the opening and closing member and an openable position that enables the opening operation of the opening and closing member;
A plurality of buttons that can be pushed in, and a predetermined one or more of the plurality of buttons are pushed to move the movable member from the locked state to the unopenable position to the openable position. A button-type lock mechanism that returns the button that has been pushed in until the movable member moves from the unopenable position to the openable position, and is in a possible unlocked state;
A button-type locking device. The button-type locking device according to claim 1,
The button type locking mechanism is
A plurality of the buttons disposed on the movable member so as to be capable of being pushed from a protruding position toward a pushed position;
A button urging member that urges each button toward the protruding position;
A button maintaining plate that is movable between a button pressing state maintaining position for maintaining each pressed button in the pressing position and a button releasing position for releasing the maintaining state;
A button maintenance plate urging member that urges the button maintenance plate toward the button pushing state maintenance position;
A button maintenance plate moving member that moves the button maintenance plate toward the button release position as the movable member is moved from the unopenable position to the openable position;
Movement allowance that allows the movable member to move to the openable position from a movement prohibition position that maintains the movable member at the unopenable position in response to a pressing operation of one or more predetermined buttons among the plurality of buttons. A lock plate that is movable between positions, and that keeps the buttons pressed in the movement-permitted position;
A locking posture in which the lock plate engages with the apparatus main body while the lock plate is in the movement prohibition position and prohibits movement of the movable member; and the apparatus main body with the lock plate in the movement allowable position The lock plate can be changed between a non-locking posture in which the engagement of the movable member is released and the movable member is allowed to move, and the lock plate is in the movement-allowed position in a state after the posture is changed to the non-locking posture. A locking member that allows movement toward the movement prohibition position from
A button-type locking device. A button-type locking device according to claim 2,
The lock member is provided with a contact portion to the lock plate,
A locking member biasing member that biases the locking member toward the first posture, the posture of which is freely changeable between the first posture and the second posture;
When the locking member changes its posture from the locked posture to the non-locking posture, a guide unit is provided for changing the posture from the first posture toward the second posture,
The abutment portion of the lock member in the first posture is brought into contact with the lock plate in the movement prohibition position and not in contact with the lock plate in the movement allowance position. And a posture change allowance hole portion that makes no contact with the lock plate at either the movement prohibition position or the movement allowance position with respect to the contact portion of the lock member in the second posture. A formed button-type locking device. A button-type locking device according to claim 3,
The posture change allowable hole is:
A hole formed in a position facing the contact portion of the lock member in the first posture in a state where the lock plate is in the movement-permitted position;
The lock plate is formed at a position facing the contact portion of the lock member in the second posture in a state where the lock plate is in the movement allowable position and the movement prohibition position, and is provided adjacent to the hole portion of the lock plate. A button-type locking device, which is a substantially L-shaped hole portion having a long hole extending along the moving direction. The button-type locking device according to any one of claims 1 to 4,
A lock plate urging portion that urges the lock plate toward the movement prohibition position;
A lock release switch for moving the lock plate from the movement prohibition position toward the movement allowable position;
A button-type locking device. A button-type locking device that enters an unlocked state from a locked state by pressing a predetermined one or more buttons out of a plurality of buttons,
It has a button body part and a hanging part that protrudes from the back side of the button body part, and is disposed so that it can be pushed and rotated from the projecting position to the pushing position, and the lock state is released according to the rotation posture. A plurality of buttons for specifying whether or not to use, and
It is arranged so as to be rotatable at a position facing the hanging portion and movable along the pushing operation direction of the button, and the distal end portion of the hanging portion is held in a locked state and movable along the pushing operation direction of the button. A plurality of button receiving portions having rotation recesses to be
A base plate for supporting each button receiving portion from the opposite side of each button;
A plurality of urging members for urging each button and each button receiving portion in a separating direction;
With
A push part protruding toward the opposite side of each button is formed at the center of each button receiving part, and a receiving part side stop is formed around the push part,
The base plate is formed with a plurality of holes into which the respective pushing portions can be inserted, and a plate side rotation portion that engages with each reception portion side rotation portion and stops the button reception portion. ,
By pushing the push-in part through the hole part, the engagement between the receiving part side stopping part and the plate side stopping part is released, and the button receiving part becomes rotatable with the button. Locking device.

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