JP2014141869A - Push-button lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a push-button lock such that an unlock code can be easily retrieved.SOLUTION: A push-button lock includes: a housing which has a plurality of push buttons fitted on one surface to protrude and retract; an operation knob capable of changing the attitude of a stopper; rods for operation which are each displaced from a clear position to a push-in position when a push button is pushed; a plurality of retrieval pins which are fitted to rods for operation respectively and extend along axes of the rods for operation; and pin projection holes which are formed on the other surface of the housing such that the retrieval pins can project to the outside by inserting tip sides of the retrieval pins. According to whether a rod for operation displaced to a push-in position corresponds to an unlock code, it is determined whether when the rod for operation is displaced from the clear position to the push-in position by pressing the push button, the tip side of the corresponding retrieval pin projects out of the housing through the pin projection hole.

Description

  The present invention relates to a push button lock.

  2. Description of the Related Art Conventionally, in lock devices that lock objects to be locked such as doors and doors, unlocking code input type push button locks using a push button that do not require a key are widely known (for example, Patent Document 1). reference). In this type of push button lock, the push button can be operated in accordance with the unlocking code to unlock the internal mechanism, and the operation knob connected to the cannula (stopper) can be operated. Become.

  By the way, a push button lock provided with a cylinder lock for forcibly unlocking the push button lock when the user (user) forgets the unlock code is known. For example, by inserting an emergency unlocking key into a cylinder lock, it becomes possible to operate a cannula (stopper) by an operation knob.

JP 2005-282032 A JP 2010-203107 A JP 2006-241931 A

  However, when emergency unlocking is performed using the emergency unlocking key, if there is no way to search for and retrieve the unlocking code, the push button lock after the emergency unlocking can be used again for normal use. Can not.

  This invention is made | formed in view of the said situation, The objective is to provide the pushbutton lock which can search an unlocking code | symbol easily.

  In order to achieve the above object, the present invention employs the following means. That is, the push button lock according to the present invention includes a housing in which a plurality of push buttons are removably attached to one surface, and a stopper posture that is attached to the housing and can be engaged with and disengaged from a counterpart member of the lock target. An operation knob that can be changed, and is slidable in the direction in which the push button protrudes and is provided in the housing corresponding to each push button, and is pushed into the housing when the corresponding push button is pushed. The operation rod that is displaced from the clear position to the push-in position and the operation knob operation can be regulated, and the operation rod only when the operation rod corresponding to the unlocking code is in the push-in position. A restriction means for releasing the restriction of the operation of the knob, and a plurality of means attached to each of the operation rods and extending along the axial direction of the operation rod A search pin and a pin projection hole formed on the other surface of the housing and projecting to the outside by inserting the front end side of the search pin, and the operating rod is operated by pushing the push button. When the operation rod displaced to the push-in position corresponds to the unlocking code when displaced from the clear position to the push-in position, the distal end side of the corresponding search pin passes through the pin protrusion hole. It is determined whether or not to protrude outside the housing.

  In the push button lock according to the present invention, when the operation rod is displaced from the clear position to the push position, only the search pin attached to the operation rod not corresponding to the unlocking code protrudes from the pin. You may be comprised so that it may protrude outside through a hole.

  The push button lock according to the present invention is attached to each of the operation rods, and is closer to the push button than a predetermined first holding position and the first holding position which are different from each other in the axial direction of the operation rod. A replacement member that can be selectively replaced to the second holding position, wherein the restricting means is such that all of the operating rods on which the replacement member is mounted at the first holding position are in the clear position; And, when all of the operating rods with the replacement member mounted at the second holding position are in the push-in position, the restriction of the operation knob operation is released, and the search pin is interposed via the replacement member. When the operating rod attached to the operating rod and having the replacement member mounted at the first holding position is displaced to the push-in position, it corresponds. When the distal end side of the rope pin protrudes to the outside through the pin projecting hole, and the operation rod mounted on the second holding position is displaced to the pushing position, the distal end side of the corresponding search pin is the pin You may be comprised so that it may not protrude outside through a protrusion hole.

  Further, in the push button lock according to the present invention, each of the replacement members is formed with a fitted portion consisting of a concave portion or a convex portion, and the restricting means is fitted into the fitted portion of the replacement member, respectively. The operation knob is released from restriction when all of the fitting portions are fitted to the fitted portions, and the replacement member is the first holding member. When at least one operation rod attached to the position is in the pushing position, or at least one operation rod attached to the second holding position is in the clear position. Moreover, you may be comprised so that the operation | movement of the said operation knob may be controlled by releasing the fitting state of the said to-be-fitted part and the said fitting part.

  ADVANTAGE OF THE INVENTION According to this invention, the push button lock which can perform the setting change operation | work of an unlocking code easily compared with the past can be provided.

It is a front view of the button lock concerning Embodiment 1. It is a rear view of the button lock concerning Embodiment 1. 3 is an exploded perspective view of the button lock according to Embodiment 1. FIG. 3 is an exploded perspective view of the button lock according to Embodiment 1. FIG. It is a perspective view of the button lock concerning Embodiment 1. FIG. It is a front view of the button lock concerning Embodiment 1. It is a figure which shows the internal cross-section of the button lock which concerns on Embodiment 1. FIG. It is a figure which shows the connection mechanism of the cylinder and stopper which concern on Embodiment 1. FIG. 2 is a perspective view of a cylinder according to Embodiment 1. FIG. 3 is a perspective view of an operation knob according to Embodiment 1. FIG. It is a figure which shows the state which mounted | wore the cylinder with the operation knob which concerns on Embodiment 1. FIG. It is a figure which shows the connection part of the operation knob and cylinder which concern on Embodiment 1. FIG. It is a figure which shows the internal structure of the cylinder which concerns on Embodiment 1. FIG. 2 is a perspective view of an indicator according to Embodiment 1. FIG. It is a figure which shows the relationship between the cylinder which concerns on Embodiment 1, and an indicator. 3 is a perspective view of an outer cylinder according to Embodiment 1. FIG. It is a figure which shows the state which inserted the emergency unlocking key in the keyhole of the cylinder which concerns on Embodiment 1. FIG. It is a figure which shows the state which inserted the cylinder exchange key in the keyhole of the cylinder which concerns on Embodiment 1. FIG. It is a figure which shows the emergency unlocking key and cylinder exchange key which concern on Embodiment 1. FIG. It is a figure which shows the internal state of a cylinder at the time of inserting the emergency unlocking key in the keyhole of the cylinder which concerns on Embodiment 1. FIG. It is a figure which shows the internal state of a cylinder at the time of inserting the emergency unlocking key in the keyhole of the cylinder which concerns on Embodiment 1. FIG. It is a figure which shows the internal state of a cylinder when a cylinder exchange key is inserted in the keyhole of the cylinder which concerns on Embodiment 1. FIG. It is a figure which shows the internal state of a cylinder when a cylinder exchange key is inserted in the keyhole of the cylinder which concerns on Embodiment 1. FIG. It is a figure which shows the internal structure of the button lock which concerns on Embodiment 1. FIG. It is a figure which shows the installation state of the operation rod of the button lock which concerns on Embodiment 1. FIG. It is a figure which shows the relative relationship of the operation rod and push button of the button lock which concerns on Embodiment 1. FIG. It is a figure which shows the relationship between the operation rod which concerns on Embodiment 1, and a movable block. It is a figure which shows the relationship between the operation rod which concerns on Embodiment 1, and a movable block. It is a figure which shows the relationship between the middle plate which concerns on Embodiment 1, and the rod for operation. It is a figure which shows the slide plate and slide rod which concern on Embodiment 1. FIG. 2 is an enlarged view of a slide plate according to Embodiment 1. FIG. It is a figure which shows the slide rod and rod return plate which concern on Embodiment 1. FIG. It is explanatory drawing explaining the detailed structure of the rod return plate which concerns on Embodiment 1. FIG. It is a figure which shows the relationship between the arm with a hook which concerns on Embodiment 1, and the outer cylinder nail | claw part of an outer cylinder. It is a figure which shows the connection state of the hook base which concerns on Embodiment 1, and an arm with a hook. It is a figure which shows the rod for operation in a rod 1st holding state. It is a figure which shows the rod for operation in a rod 2nd holding state. It is a figure which shows the relative relationship of the recessed part of the movable block which concerns on Embodiment 1, and the projection part of a slide rod. It is a figure which shows the state from which the pushbutton of the button lock which concerns on Embodiment 1 is not aligned with an unlocking code. It is a figure which shows the state which the arm which concerns on Embodiment 1 and the outer cylinder nail | claw part of an outer cylinder are engaging. It is a figure which shows the state by which the fitting state of the nail | claw part and the operating rod was cancelled | released in response to the slide of the rod return plate which concerns on Embodiment 1. FIG. It is a figure which shows the state by which engagement with the arm with a hook which concerns on Embodiment 1 and the outer cylinder nail | claw part of an outer cylinder was cancelled | released. It is a figure which shows the relationship between the pin receiving part of the rod return plate which concerns on Embodiment 1, and the pin of a setting change switch. It is a figure which shows the relationship between the pin receiving part of the rod return plate which concerns on Embodiment 1, and the pin of a setting change switch. It is a figure which shows the state by which fitting of the movable block with respect to the rod for operation was cancelled | released at the time of unlocking code | symbol setting. It is a figure which shows the state by which fitting of the movable block with respect to the rod for operation was cancelled | released at the time of unlocking code | symbol setting. It is a figure which shows the relative relationship of the recessed part of the movable block which concerns on Embodiment 1, and the projection part of a slide rod. It is a figure explaining the 1st modification of the button lock concerning Embodiment 1. FIG. It is a figure explaining the 1st modification of the button lock concerning Embodiment 1. FIG. It is a figure explaining the 2nd modification of the button lock concerning Embodiment 1. FIG. It is a figure explaining the 3rd modification of the button lock concerning Embodiment 1. FIG. It is a figure explaining the 4th modification of the button lock concerning Embodiment 1. FIG. It is a figure explaining the 5th modification of the button lock concerning Embodiment 1. FIG. It is a figure explaining the 5th modification of the button lock concerning Embodiment 1. FIG. It is a figure explaining the 6th modification of the button lock concerning Embodiment 1. FIG. It is a front view of the button lock concerning Embodiment 2. It is a rear view of the button lock concerning Embodiment 2. 6 is a perspective view of a button lock according to Embodiment 2. FIG. It is sectional drawing of the principal part of the button lock which concerns on Embodiment 2. FIG. FIG. 6 is a diagram illustrating a slide plate according to a second embodiment. It is a figure which shows the slide rod which concerns on Embodiment 2. FIG. It is a figure which shows the rod return plate which concerns on Embodiment 2. FIG. It is a figure which shows the junction part of the slide rod which concerns on Embodiment 2, and an arm. It is a figure which shows the junction part of the slide rod which concerns on Embodiment 2, and an arm. It is a figure which shows the detail of the arm which concerns on Embodiment 2. FIG. It is a figure which shows the rod return plate which concerns on Embodiment 2, and an arm with a hook. It is a figure which shows the detailed structure of the arm with a hook concerning Embodiment 2. FIG. It is a figure explaining the operation | movement content of the arm which concerns on Embodiment 2. FIG. It is a figure explaining the operation | movement content of the arm with a hook which concerns on Embodiment 2. FIG. It is a front view of the button lock concerning the modification of Embodiment 2. It is a rear view of the button lock concerning a modification of Embodiment 2. It is the figure which showed partially the back of the button lock concerning the modification of Embodiment 2 in the state where the rear panel was removed. It is a fragmentary sectional view of the button lock concerning the modification of Embodiment 2. It is a figure which shows the rear panel of the button lock which concerns on the modification of Embodiment 2. (A) shows a plan view of the rear panel, and (b) shows a side view of the rear panel.

  DETAILED DESCRIPTION Exemplary embodiments for carrying out the present invention will be described in detail below with reference to the drawings. Note that the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are intended to limit the technical scope of the invention to those unless otherwise specified. is not.

<< Embodiment 1 >>
<Overall configuration>
FIG. 1 is a front view (front view) of a mechanical push button lock (hereinafter simply referred to as “button lock”) 100 according to the first embodiment. FIG. 2 is a rear view (rear view) of the button lock 100 according to the first embodiment. 3 and 4 are exploded perspective views of the button lock 100. FIG. FIG. 5 is an external perspective view of the button lock 100 as viewed from the back side. The button lock 100 includes an upper case 2, a lower case 3, and the like as housings that house and protect various components constituting the button lock 100. The upper case 2 and the lower case 3 constitute a housing by being fitted together with various components shown in FIGS. 3 and 4 arranged inside. Needless to say, various changes can be made to the structure and shape of the housing. As shown in FIGS. 1 and 2, a front panel 21 is mounted on the outer surface of the upper case 2, and a rear panel 30 is mounted on the outer surface of the lower case 3.

  The front panel 21 attached to the upper case 2 covers the front side of the upper case 2. In this embodiment, the vertical and horizontal directions of the button lock 100 are defined as shown in FIG. In addition, a direction perpendicular to the vertical direction and the horizontal direction is defined as the front-rear direction, and the front panel 21 side is the front and the lower case 3 side is the rear. However, the top, bottom, left, and right and front and rear directions of the button lock 100 do not specify the positional relationship with respect to an external reference standard, but merely specify the relative positional relationship between the parts of the button lock 100.

  The front panel 21 of the button lock 100 is provided with a plurality of push buttons 22, a clear button 23, an operation knob 4, a display window 24, and the like. Further, in the vicinity of each push button 22 on the front panel 21, a code (including numerals, symbols, characters, and the like) corresponding to the push button 22 is printed, stamped, and the like. In the example shown in FIG. 2, the button lock 100 has 11 push buttons 22, and 0 to 9 and * marks are printed next to the corresponding push buttons 22. However, the number of push buttons 22 included in the button lock 100 and the type of code printed on the front panel 21 can be changed according to the specifications of the button lock 100. The front panel 21 is provided with a button opening 211 having a shape and size suitable for allowing the push button 22 and the clear button 23 to appear and disappear. The buttons 22 and the like can appear and disappear.

  The push button 22 can freely advance and retreat (in and out) from the inside and outside of the housing through the button opening 211 formed in the front panel 21. As will be described later, the button lock 100 can be unlocked by performing a pressing operation of the push button 22 in accordance with an unlock code (so-called personal identification number). When the button lock 100 is in the unlocked state, the user (handler) can rotate the operation knob 4 to perform the opening / closing operation of the stopper 10 of the button lock 100. The stopper 10 is attached to the housing and can be engaged with and disengaged from the counterpart member of the lock target. The operation knob 4 is connected to the stopper 10, and the posture of the stopper 10 can be changed by rotating the operation knob 4. The user switches the locking / unlocking state of the stopper 10 with respect to the counterpart member of the object to be locked by setting the alignment mark 41 of the operation knob 4 to either the OPEN position 25 or the CLOSE position 26. It can be performed.

  For example, in the state shown in FIG. 1, since the alignment mark 41 of the operation dial 4 is aligned with the position of the OPEN position 25, the stopper 10 is detached from the counterpart member of the lock target in this state. On the other hand, as shown in FIG. 6, when the user rotates the operation knob 4 and aligns the alignment mark 41 with the CLOSE position 26, the posture of the stopper 10 is shown in FIG. 6 from the disengagement position shown in FIG. 1. The position is changed to the locking position, and the stopper 10 is locked to the counterpart member of the locking object. Further, when the button lock 100 is in the locked state, the turning operation of the operation knob 4 is restricted. The display window 24 displays whether the operation dial 4 is set to the OPEN position or the CLOSE position. In the present embodiment, the display mode of the display window 24 is switched so that the operation knob 4 is green when the operation knob 4 is at the OPEN position 25 and red when the operation knob 4 is at the CLOSE position 26. The present invention is not limited to this mode.

During normal use, the button lock 100 is locked and unlocked (hereinafter also referred to as “locking / unlocking operation”) by the user pressing the push button 22 in accordance with the unlocking code. Done. For example, when the unlocking code is “1246”, among the codes displayed on the front panel 21, the pressing corresponding to “1”, “2”, “4”, “6” corresponding to the unlocking code. When only the button 22 is pressed and the other push buttons 22 are not pressed, the button lock 100 is unlocked. In this case, as described above, the opening / closing operation can be performed by rotating the operation knob 4. As will be described in detail later, the button lock 100 can regulate the operation of the operation knob 4, and when only the operation rod corresponding to the unlocking code is in the pushing position in accordance with the pushing operation of the push button 22. There is a restricting means for canceling the restriction of the operation knob operation. The opening / closing operation of the operation knob 4 herein refers to an operation of switching the position of the operation knob 4 from the OPEN position 25 to the CLOSE position 26 or from the CLOSE position 26 to the OPEN position 25. Hereinafter, the former operation is referred to as a “closing operation”, and the latter operation is referred to as an “opening operation”.

  Further, as shown in FIG. 2, a setting change switch 11 is provided on the back side of the button lock 100. The setting change switch 11 is a switch used when changing the setting of the unlocking code of the button lock 100. The button lock 100 can arbitrarily set the unlock code of the button lock 100 using the setting change switch 11. When the button lock 100 is normally used, the setting change switch 11 is set to the fixed position. Details of the unlocking code setting method in the button lock 100 will be described later.

<Cylinder lock mechanism>
The button lock 100 includes a cylinder lock mechanism (hereinafter referred to as “cylinder”) 5 for forcibly unlocking the button lock 100 when the user forgets the unlock code (see FIG. 7). The cylinder 5 is interposed between the operation knob 4 and the stopper 10, and by using a predetermined unlocking key, it is possible to forcibly release the restriction of the operation knob 4 regulated by a regulating means described later. It is.

  FIG. 7 is a cross-sectional view of the button lock 100 passing through a vertical cross section along the axial direction of the cylinder 5. The cylinder 5 is a lock mechanism having a key hole 51 formed along the axial direction thereof, and is rotatably held inside the outer cylinder 6. The outer cylinder 6 is disposed inside a cylindrical sleeve portion 27 formed as a part of the upper case 2. As will be described in detail later, an indicator 13 is fitted into the front end portion of the cylindrical sleeve portion 27. As shown in FIG. 1, the front end sides of the cylinder 5 and the outer cylinder 6 are covered with an operation knob 4. The outer cylinder 6 is rotatably attached to the cylindrical sleeve portion 27 of the upper case 2. A cylinder 5 is rotatably and slidably mounted on the inner peripheral side of the outer cylinder 6. However, in a normal state, the cylinder 5 is locked with respect to the outer cylinder 6, and the outer cylinder 6 is excluded except when an emergency unlocking key or a cylinder replacement key described later is inserted into the key hole 51 of the cylinder 5. The relative rotation and sliding of the cylinder 5 with respect to the cylinder are restricted (prohibited).

  FIG. 8 is a diagram illustrating the relationship among the cylinder 5, the drive shaft 12, and the stopper 10. A shaft portion 121 is formed at the rear end portion of the drive shaft 12. The stopper 10 is formed with an attachment hole 101 into which the shaft 121 of the drive shaft 12 can be inserted, and the drive shaft 12 and the stopper 10 are fixed in a state where the shaft 121 is inserted into the attachment hole 101. A cylindrical connection pin 52 is formed at the rear end portion of the cylinder 5, and a cylindrical hollow portion 122 is opened at the front end surface of the drive shaft 12. The hollow portion 122 extends along the axial direction of the drive shaft 12, and the cylinder 5 and the drive shaft 12 are integrally connected by fitting the connection pin 52 of the cylinder 5.

  FIG. 9 is a perspective view of the cylinder 5 according to the first embodiment. FIG. 10 is a perspective view of the operation knob 4 according to the first embodiment. FIG. 11 is a perspective view illustrating a state where the operation knob 4 is mounted on the cylinder 5 according to the first embodiment. The cylinder 5 is formed with a slot penetrating the cylinder 5 in the radial direction.

As shown in FIG. 9, a plate-like engagement portion 53 is joined to the front end portion of the cylinder 5. A key insertion hole 531 is formed through the engagement portion 53. The key insertion hole 531 can be inserted with a cylinder exchange key or an emergency unlocking key. Further, the engaging portion 53 has a groove portion 532 provided in parallel with the long side direction of the key insertion hole 531. One end of the groove portion 532 is open on one side surface of the engaging portion 53. The engaging portion 53 has a protruding portion 533 that protrudes to the side of the cylinder 5.

  As shown in FIG. 10, the operation knob 4 is formed with a key insertion hole 41 that penetrates the operation knob 4 in the axial direction. The key insertion hole 41 is a through hole for guiding a cylinder exchange key or an emergency unlocking key to the key insertion hole 531 and the key hole 51 of the cylinder 5. A guide protrusion 42 and a pair of engaging claws 43 are provided on the rear end surface (back surface) of the operation knob 4. The engagement claw portion 43 is detachable by sliding with the engagement portion 53 of the cylinder 5. Thereby, the operation knob 4 can be detachably attached to the cylinder 5. However, the attachment / detachment of the operation knob 4 with respect to the cylinder 5 is permitted when the cylinder 5 is pulled out from the outer cylinder 6, and the operation knob 4 is attached when the cylinder 5 is attached to the outer cylinder 6 as shown in FIG. Detachment is restricted.

  The guide protrusion 42 of the operation knob 4 is formed along the long side (longitudinal) direction of the key insertion hole 41. The guide protrusion 42 has the same dimension or a slightly smaller width dimension of the groove part 532 of the engaging part 53 provided in the cylinder 5. When the operation knob 4 is mounted on the cylinder 5, the guide protrusion 42 of the operation knob 4 enters the groove portion 532 on the cylinder 5 side. At that time, the relative sliding movement of the engaging portion 53 and the engaging claw portion 43 is guided, so that the operation knob 4 can be smoothly attached to and detached from the cylinder 5.

  As shown in FIG. 13, a tumbler 54 and a slot spring 55 that urges the tumbler 54 are disposed inside each slot. Note that the tumbler disposed in the slot located on the most rear end side in the cylinder 5 is referred to as a “stopper tumbler”, and is distinguished from other tumblers (hereinafter referred to as “general tumbler”) 54G by being denoted by reference numeral 54S. The general tumbler 54G and the stopper tumbler 54S are collectively referred to as “tumbler 54”.

  The slot spring 55 urges the tumbler 54 to be pushed out of the slot through the opening of the slot. The tumbler 54 includes a key hole 51 through which a cylinder replacement key and an emergency unlocking key can be inserted, a first protrusion 56 and a second protrusion 57 that protrude laterally in the tumbler 54. The first protrusion 56 is engaged with the slot spring 55.

  FIG. 14 is a perspective view of the indicator 13 according to the first embodiment. The indicator 13 includes a stepped tube main body 131 having a cylindrical shape and having a different diameter in the axial direction, and a display unit 132 provided on the outer peripheral surface of the stepped tube main body 131. The display unit 132 is divided into a first display area 132A and a second display area 132B, and the display mode (appearance) is different for each.

The cylinder part main body 131 of the indicator 13 has a small diameter cylinder part 131A and a large diameter cylinder part 131B. A step portion 131C is formed between the small-diameter cylindrical portion 131A and the large-diameter cylindrical portion 131B on the inner peripheral surface of the cylindrical main body 131. Moreover, the display part 132 mentioned above has a fan shape, and is formed in the radial direction from the large diameter cylinder part 131B. Further, the small-diameter cylindrical portion 131A has a notch 131D formed in one circumferential section, and has a substantially C-shape in plan view. The indicator 13 is mounted so as to cover the front end surface of the cylindrical sleeve portion 27 shown in FIG. At that time, the indicator 13 is attached to the cylindrical sleeve portion 27 so that the front end portion of the cylindrical sleeve portion 27 is in a state of being abutted against the step portion 131C of the indicator 13. As shown in FIG. 15, the protruding portion 533 of the engaging portion 53 in the cylinder 5 is received in the notch portion 131 </ b> D of the small diameter cylindrical portion 131 </ b> A in the indicator 13. Thus, by engaging the protruding portion 533 on the cylinder 5 side and the edge of the notch portion 131D on the indicator 13 side, when the cylinder 5 is rotated, the indicator 13 is also rotated in conjunction with it. It has become.

  FIG. 16 is a perspective view of the outer cylinder 6 according to the first embodiment. On the inner peripheral surface of the outer cylinder 6, a pair of locking grooves 61 are formed at positions that are directly opposite (facing) across the accommodation space for accommodating the cylinder 5. Further, a cylinder replacement groove 62 is provided in the inner peripheral surface of the outer cylinder 6 at an intermediate point between the pair of locking grooves 61. Each locking groove 61 and cylinder replacement groove 62 are formed so as to extend along the axial direction of the outer cylinder 6. The cylinder replacement groove 62 is provided at a position shifted in the circumferential direction of 90 ° from the pair of locking grooves 61 in the circumferential direction of the outer cylinder 6. The width of each locking groove 61 is slightly larger than the width of the general tumbler 54G. On the other hand, the width of the cylinder replacement groove 62 is smaller than the width of the general tumbler 54G. In addition, the front end surface of the outer cylinder 6 is formed with a recess 63 that is partially cut out in a U-shape. When the indicator 13 is attached to the cylindrical sleeve portion 27 and the outer cylinder 6 is installed inside the cylindrical sleeve portion 27, the front end surface of the outer cylinder 6 is disposed at a position flush with the front end surface of the indicator 13. (See FIG. 7). Further, an enlarged diameter portion 65 having an inner diameter larger than that of the region where the locking groove 61 and the cylinder replacement groove 62 are formed is formed in the region on the bottom side of the outer cylinder 6. In FIG. 7, a stepped portion 64 is formed (see FIG. 7).

  By the way, the button lock 100 can be forcibly unlocked by using the emergency unlock key when the user forgets the unlock code. FIG. 17 shows a state where the emergency unlocking key 14 is inserted into the keyhole 51 of the cylinder 5. As described above, the button lock 100 can be replaced by pulling out the cylinder 5 from the outer cylinder 6 using a cylinder replacement key dedicated to cylinder replacement. FIG. 18 shows a state in which the cylinder replacement key 15 is inserted into the key hole 51 of the cylinder 5. In FIG. 17 and FIG. 18, the illustration of the operation knob 4 attached to the cylinder 5 is omitted.

  FIG. 19 is a diagram showing the emergency unlock key 14 and the cylinder exchange key 15. The emergency unlocking key 14 has a gripping portion 141 and an insertion portion 142, and key grooves 143 are carved on the upper and lower surfaces of the insertion portion 142. Similarly, the cylinder exchange key 15 has a gripping part 151 and an insertion part 152, and key grooves 153 are carved on the upper and lower surfaces of the insertion part 152. The insertion part 152 of the cylinder exchange key 15 is longer than the insertion part 142 of the emergency unlocking key 14. The insertion part 152 of the cylinder exchange key 15 is formed with a key groove (hereinafter referred to as “first key groove”) KC1 common to the emergency unlocking key 14 except for the tip part. The meaning that the keyway is common means that the shape, depth, and the like of the keyway match. Furthermore, the cylinder exchange key 15 has a second keyway KC 2 formed at the tip of the insertion part 152. On the other hand, the emergency unlocking key 14 does not have the second keyway KC2.

  By the way, each slot of the cylinder 5 is provided at a keyway reading position corresponding to the first keyway KC1 and the second keyway KC2. When neither the emergency unlocking key 14 nor the cylinder exchange key 15 is inserted into the keyhole 51, as shown in FIG. 13, the first protrusion 56 of the cylinder 5 is urged to the outside of the slot by the slot spring 55, The general tumbler 54G moves toward the opening of the slot, and the general tumbler 54G protruding from the slot is locked in the locking groove 61 of the outer cylinder 6. As a result, the relative rotation of the cylinder 5 with respect to the outer cylinder 6 is restricted (restricted).

On the other hand, when the emergency unlocking key 14 is inserted into the keyhole 51 of the cylinder 5, the general tumbler 54G is completely drawn into the slot by the first keyway KC1 (see FIG. 17). As a result, as shown in FIG. 20, the engagement between the general tumbler 54G and the locking groove 61 is released. In this way, all the general tumblers 54G are released from the locked state with the locking groove 61 of the outer cylinder 6, so that the cylinder 5 can be rotated relative to the outer cylinder 6. When the emergency unlocking key 14 is inserted into the keyhole 51 of the cylinder 5, the emergency unlocking key 14 does not have the second keyway KC2, so that one end X of the stopper tumbler 54S is removed from the slot of the cylinder 5. (See FIGS. 17 and 21). The width of the end portion X in the stopper tumbler 54S is the same as the width of the general tumbler 54G and is larger than the width of the cylinder replacement groove 62 in the outer cylinder 6. The cylinder 5 is configured such that when the cylinder replacement key 15 is not inserted into the key hole 51, the end X protrudes outward from the slot by the urging force of the slot spring 55.

  As described above, the cylinder exchange key 15 has the same first keyway KC1 as the emergency unlocking key 14. Therefore, even when the cylinder replacement key 15 is inserted into the keyhole 51 instead of the emergency unlocking key 14, all the general tumblers 54G are locked with the locking grooves 61 of the outer cylinder 6, as shown in FIG. Will be canceled. As described above, when the emergency unlocking key 14 or the cylinder replacement key 15 is inserted into the keyhole 51, the general tumbler 54G of the cylinder 5 is released from being locked, so that the relative rotation of the cylinder 5 with respect to the outer cylinder 6 is prevented. It becomes possible. Therefore, the user rotates the emergency unlocking key 14 or the cylinder replacement key 15 inserted in the keyhole 51 and changes the posture of the stopper 10 from the locking position to the releasing position, so that the object to be locked is changed. It can be forcibly unlocked.

  When the cylinder 5 is pulled out of the outer cylinder 6 and replaced, the cylinder replacement key 15 is inserted into the key hole 51 of the cylinder 5 as shown in FIG. When the cylinder exchange key 15 is inserted into the key hole 51 of the cylinder 5, the end X of the stopper tumbler 54S is slotted by the second key groove KC2 of the cylinder exchange key 15, as shown in FIGS. The end Y of the stopper tumbler 54S protrudes from the slot. The end portion Y of the stopper tumbler 54S is slightly narrower than the width of the cylinder replacement groove 62 in the outer cylinder 6. Therefore, the cylinder 5 can be extracted from the outer cylinder 6 by matching the planar positions of the end portion Y of the stopper tumbler 54S and the cylinder replacement groove 62. After the cylinder 5 is pulled out from the outer cylinder 6, the operation knob 4 and the cylinder 5 are slid to release the engagement between the engagement claw portion 43 of the operation knob 4 and the engagement portion 53 of the cylinder 5. Thereby, the operation knob 4 can be removed from the cylinder 5. Thereafter, a new cylinder 5 is attached to the operation knob 4, and the cylinder 5 to which the operation knob 4 is attached is attached to the outer cylinder 6. When the cylinder replacement key 15 is not inserted into the key hole 51 of the cylinder 5, the end X of the stopper tumbler 54 </ b> S is caught by the stepped portion 64 of the outer cylinder 6, so that the cylinder 5 cannot be removed from the outer cylinder 6. Be regulated.

  Here, when the operation knob 4 is attached to a new cylinder 5, the engaging portion 53 of the cylinder 5 is moved from the direction (lateral direction) perpendicular to the extending direction of the key insertion hole 41 with respect to the engaging claw portion 43. The engaging portion 53 is locked by the engaging claw portion 43 by sliding. At that time, since the guide protrusion 42 of the operation knob 4 enters the groove portion 532 on the cylinder 5 side, the relative sliding movement of the engaging portion 53 and the engaging claw portion 43 is guided, so that the operation on the cylinder 5 is performed. The knob 4 can be attached and detached smoothly.

  When the operation knob 4 is mounted on the cylinder 5, when the amount of the guide protrusion 42 entering the groove 532 reaches the length of the groove 532, the ends of the groove 532 and the guide protrusion 42 come into contact with each other (collision). To do. When the end portions of the groove portion 532 and the guide protrusion 42 collide with each other in this way, further entry of the guide protrusion 42 into the groove portion 532 is restricted (restricted) (see FIGS. 11 and 12, etc.). In the present embodiment, the relative relationship between the groove 532 and the guide protrusion 42 is defined so that the ends of the groove 532 and the guide protrusion 42 come into contact with each other when the key insertion holes 41 and 531 just overlap each other. According to this, when the operation knob 4 is mounted on the cylinder 5, the key insertion is performed simply by sliding the engagement portion 53 and the engagement claw portion 43 with each other until the ends of the groove portion 532 and the guide projection 42 come into contact with each other. The cylinder 5 and the operation knob 4 can be easily aligned to a position where the holes 41 and 531 just overlap.

  In a state where the operation knob 4 is mounted on the cylinder 5, the engagement claw portion 43 and the engagement portion 53 are overlapped in the axial direction of the operation knob 4 and the cylinder 5, that is, the engagement portion 53 of the cylinder 5 is engaged. It will be in the state where it got under the nail | claw part 43 (refer FIG. 11). Therefore, even if an external force is applied to pull the cylinder 5 and the operation knob 4 in the axial direction in this state, the movement of the cylinder 5 and the operation knob 4 to be separated is restricted. That is, for example, as shown in FIG. 7, when the cylinder 5 is held in the outer cylinder 6, even if a third party forcibly pulls the operation knob 4, the operation knob 4 may come off the cylinder 5. It is suppressed. Therefore, according to the button lock 100 according to the present embodiment, the front end surface of the cylinder 5 is not exposed to the outside unless the cylinder 5 is properly pulled out from the outer cylinder 6 using the cylinder replacement key 15. Thereby, it is possible to prevent a third party from visually recognizing the position and state of the keyhole 51 of the cylinder 5 from the front of the button lock 100, and mischief such as illegal unlocking by picking or insertion of a foreign object into the keyhole 51 ( It is possible to avoid being damaged by mischief).

  Further, when the button lock 100 is normally used, the operation knob 4 can be easily attached to and detached from the cylinder 5 when replacing the cylinder 5 while enjoying the advantage that it is difficult to suffer from picking or mischief. it can. That is, when the cylinder 5 is replaced, only the cylinder 5 is replaced, and the operation knob 4 can be used after the cylinder 5 is replaced. Therefore, the manufacturing cost of the button lock 100 can be suitably reduced.

<Button lock mechanism>
Next, the button lock mechanism in the button lock 100 will be described in detail. Inside the housing of the button lock 100, a slide plate 7, a middle plate 8, and a rod return plate 9 are arranged in this order from the upper case 2 side. The middle plate 8 is a plate member fixed to the lower case 3 and divides the interior of the housing into two spaces. Hereinafter, the housing space defined by the middle plate 8 and the upper case 2 in front of the middle plate 8 in the housing is referred to as a first housing portion. In addition, a housing space defined by the middle plate 8 and the lower case 3 behind the middle plate 8 in the housing is referred to as a second housing portion.

[Rod for operation]
FIG. 24 is an explanatory diagram for explaining the internal structure of the button lock 100, and specifically shows a state in which the inside of the housing is viewed from the inner surface (back surface) side of the upper case 2. FIG. As shown in FIG. 24, the upper case 2 is provided with a plurality of rod insertion holes 31 which are through holes. In the rod insertion hole 31, a part of the operation rod 32 is provided as shown in FIG. Can be inserted. FIG. 25 shows a cross section of the operation rod 32. FIG. 26 shows the relative relationship between the operation rod 32 and the push button 22. FIG. 27 shows a top view and a side view of the operation rod 32. A plurality of operation rods 32 are attached to the housing of the button lock 100 corresponding to each push button 22. The operation rod 32 is provided in the housing so as to be slidable in the direction in which the push button 22 protrudes and retracts from the housing. As shown in the figure, the operation rod 32 has a trunk body 321, a neck 322, and a head 323 from one end in the longitudinal direction.

The trunk body 321 of the operation rod 32 has a substantially quadrangular prism shape. On the other hand, the neck portion 322 and the head portion 323 have a substantially cylindrical shape, and these have a smaller cross section than the body portion main body 321. The operation rod 32 can be inserted through the neck portion 322 and the head portion 323 into the rod insertion hole 31, but the body portion 321 cannot be inserted therethrough. Further, a constricted portion having a constricted shape is formed at a boundary portion between the neck 322 and the head 323 in the operation rod 32. As shown in FIG. 25, the operation rod 32 has the head 323 and the neck 322 inserted through the rod insertion hole 31 from the inner surface side of the upper case 2, and the rod spring 324 for holding the rod is connected to the upper case 2. Between the outer surface and the constricted portion of the operating rod 32. Thereby, the operation rod 32 is held with respect to the upper case 2 in such a manner that it can be pushed in the front-rear direction of the button lock 100.

  Further, as shown in FIG. 26, the push button 22 has a smaller cross-sectional area than the button opening 211 formed on the front panel 21 and a larger cross-sectional area than the button opening 211. And a base portion 222. The base portion 222 of the push button 22 is disposed on the back side of the front panel 21 to prevent the push button 22 from falling off from the button opening 211 of the front panel 21. A button spring 223 is mounted on the back side of the base portion 222 of the push button 22. The button spring 223 is sandwiched between the base portion 222 of the push button 22 and the upper case 2 and presses the push button 22 forward. In FIG. 26, the rod spring 324 described above is not shown.

  As described above, the push button 22 is always pressed in the direction of being pushed out from the button opening 211 by the button spring 223. The operation rod 32 is always pressed by the rod spring 324 in the direction in which the operation rod 32 is pushed out from the rod insertion hole 31. When the user pushes the push button 22 against the urging force of the button spring 223, the base portion 222 of the push button 22 pushes the head 323 of the operation rod 32, so that the push button 22 is pushed. In conjunction with this, the operating rod 32 is also displaced in the axial direction. Thereafter, when the user's finger leaves the push button 22, the push button 22 is returned to the initial position shown in FIG. 26 by the urging force of the button spring 223. The initial position of the push button 22 refers to a position where the push button 22 is not buried in the button opening 211 as shown in the figure.

  As shown in FIGS. 25 and 27, a groove 325 is provided at the rear end of the trunk body 321 in the operation rod 32. The groove bottom of the groove portion 325 is formed as an inclined surface 325a inclined with respect to the axial direction of the operation rod 32, and can engage with an inclined protrusion 94 in the rod return plate 9 described later. Further, as shown in FIG. 27, the trunk portion main body 321 of the operation rod 32 is provided with a plurality of pairs of recesses. Reference numerals 321a and 321a are first recess pairs, and reference numerals 321b and 321b are second recess pairs. The first recess pair 321 a and 321 a and the second recess pair 321 b and 321 b can be engaged with the claw portion 91 of the rod return plate 9. The claw portion 91 of the rod return plate 9 can selectively engage with the first recess pair 321a, 321a and the second recess pair 321b, 321b. As shown in FIG. 27, the first recess pair 321a, 321a and the second recess pair 321b, 321b are formed at corners that form a boundary between the bottom surface and the side surface of the trunk body 321. Regarding the axial direction (longitudinal direction) of 321, the second recess pair 321 b and 321 b are formed on the inner side as compared with the first recess pair 321 a and 321 a. The shape and size of the first recess pair 321a, 321a and the second recess pair 321b, 321b are the same.

In FIG. 27, reference numerals 321c and 321c denote a third recess pair, and reference numerals 321d and 321d denote a fourth recess pair. Similarly to the first recess pair 321a, 321a and the second recess pair 321b, 321b, the third recess pair 321c, 321c and the fourth recess pair 321d, 321d also form an angle that forms a boundary between the bottom surface and the side surface of the trunk body 321. It is formed in the part. In the axial direction of the trunk body 321, the third recess pair 321 c, 321 c is arranged on the front end side of the second recess pair 321 b, 321 b, and the fourth recess pair 321 d, 321 d is further from the third recess pair 321 c, 321 c. It is arranged on the front end side. The third recess pair 321c, 321c and the fourth recess pair 321d, 321d have the same shape and size. Further, in FIG. 26, reference numerals 321e and 321e are first convex part pairs, reference numerals 321f and 321f are second convex part pairs, and reference numerals 321g and 321g are third convex part pairs. The first convex portion pair 321e, 321e, the second convex portion pair 321f, 321f, and the third convex portion pair 321g, 321g are formed at corners that form a boundary between the upper surface and the side surface of the trunk main body 321. The main body 321 is arranged in this order from the rear end side. The first convex portion pair 321e and 321e, the second convex portion pair 321f and 321f, and the third convex portion pair 321g and 321g have the same shape and size.

  The third concave pair 321c, 321c, the fourth concave pair 321d, 321d, the first convex pair 321e, 321e, the second convex pair 321f, 321f, the third convex pair 321g, 321g in the operation rod 32 are shown in FIG. It is used when the movable block 33 shown in 3 and 4 is mounted by fitting. FIG. 27 shows a state where the movable block 33 is attached to the operation rod 32, and one movable block 33 is attached to one operation rod. The movable block 33 is a member having a substantially U-shape, and includes a bottom wall portion 331 and a pair of side wall portions 332 standing from both ends of the bottom wall portion 331 (see FIGS. 3, 4 and the like). . The movable block 33 corresponds to a replacement member in the present invention.

  Inside the upper end of the side wall portion 332 of the movable block 33, a block-side first recess pair 333a, 333a and a block-side second recess pair 333b, 333b are provided at a predetermined interval. Further, the block side convex pair 333c, 333c is provided at a substantially intermediate position between the block side first concave pair 333a, 333a and the block side second concave pair 333b, 333b and inside the lower end of the bottom wall portion 331. ing. The block-side first concave pair 333a, 333a of the movable block 33 can selectively accept the first convex pair 321e, 321e or the second convex pair 321f, 321f in the operation rod 32, and the block-side second concave pair 331a, 333a The pair of recesses 333b and 333b can selectively receive the second pair of protrusions 321f and 321f or the third pair of protrusions 321g and 321g in the operation rod 32. Further, the block-side convex pair 333c, 333c of the movable block 33 can be selectively fitted to the third concave pair 321c, 321c or the fourth concave pair 321d, 321d in the operation rod 32.

  In the example shown in FIG. 27, the block-side first concave pair 333a, 333a, the block-side second concave pair 333b, 333b, and the block-side convex pair 333c, 333c in the movable block 33 are respectively the first convex in the operation rod 32. The movable block 33 is held at the first holding position of the operating rod 32 by engaging with the pair of parts 321e and 321e, the second pair of convex parts 321f and 321f, and the third pair of concave parts 321c and 321c. On the other hand, as shown in FIG. 28, the operating rod 32 can hold the movable block 33 at the second holding position on the front end side (head 323 side) as compared with the first holding position. Here, the second holding position of the operation rod 32 can be said to be a position relatively closer to the push button 22 than the first holding position. When the movable block 33 is held at the second holding position of the operation rod 32, the block-side first concave pair 333a, 333a and the block-side second concave pair 333b, 333b are the second convex pair of the operation rod 32, respectively. 321f and 321f and the third convex portion pair 321g and 321g are received, and the block-side convex portion pair 333c and 333c are fitted into the fourth concave portion pair 321d and 321d in the operation rod 32. As described above, the movable block 33 can selectively switch the position held with respect to the operation rod 32 between the first holding position and the second holding position. A concave portion 334 having a substantially quadrangular pyramid shape is provided on the outer surface of the bottom wall portion 331 of the movable block 33.

[Middle plate]
As described above, the middle plate 8 is a plate member having a substantially rectangular planar shape fixed to the lower case 3, and largely divides the interior of the housing into a first housing portion and a second housing portion. As shown in FIGS. 3 and 4, the middle plate 8 is provided with as many block accommodating recesses 81 as the operation rods 32 that can accommodate the movable block 33. The block housing recess 81 is open facing the first housing portion in the housing. The block housing recess 81 has a slightly larger cross section than the movable block 33. In addition, a bottom plate for supporting the movable block 33 is provided on the back surface of the block housing recess 81, and a rod insertion hole 81a through which the body main body 321 of each operation rod 32 can be inserted is provided on the bottom plate. It has been. Reference numeral 82 in the figure denotes a sleeve that guides a search pin 34 to be described later, and a region surrounded by the sleeve 82 in the middle plate 8 penetrates differently from the block receiving recess 81 and the rod insertion hole 81a described above. A hole 83 is formed. The through hole 83 is a hole used for inserting the search pin 34, and details thereof will be described later.

  FIG. 29 is a diagram illustrating a relationship between the middle plate 8 and the operation rod 32. The opening cross-sectional area of the rod insertion hole 81 a of the middle plate 8 is smaller than the cross section of the movable block 33 and slightly larger than the cross section of the trunk portion main body 321 of the operation rod 32. The operation rod 32 has a head 323 and a neck 322 inserted through the rod insertion hole 31 of the upper case 2, and the body main body 321 is inserted through the rod insertion hole 81 a of the middle plate 8. As a result, the operation rod 32 is held in a normal posture as shown in FIG. 29 without being inclined obliquely in the first housing portion of the housing.

[Slide plate / Slide rod / Rod return plate]
FIG. 30 is a view showing the rear surface of the slide plate 7, that is, the surface facing the middle plate 8. The slide plate 7 is disposed in a first housing portion in the housing, that is, between the upper case 2 and the middle plate 8. As is clear from FIGS. 3 and 4, the slide plate 7 is disposed to face the middle plate 8. The rear surface of the slide plate 7 is slidable within a predetermined range in the vertical direction within the housing while being in sliding contact with the front surface of the middle plate 8. The slide plate 7 is housed in the first housing portion of the housing so as to be slidable in the vertical direction. The slide plate 7 corresponds to the first plate member in the present invention.

  The slide plate 7 has a plurality of through holes 71 having a shape that connects a square and an ellipse. The through holes 71 in the slide plate 7 are provided at positions corresponding to the push buttons 22 by the number corresponding to the push buttons 22 of the button lock 100. Here, in the through hole 71, a portion having a substantially rectangular shape is referred to as a “block accommodation hole portion 71 a”, and a portion having a substantially oval shape is referred to as a “search pin insertion hole portion 71 b”. As described above, the slide plate 7 is slidable in the vertical direction in the housing (first housing portion), that is, in the direction orthogonal to the sliding direction of the operation rod 32, The position of the slide plate 7 is such that the position of each of the middle plate 8 and the block receiving recess 81 coincides with each other, that is, the corresponding block receiving hole 71a and the block receiving recess 81 overlap with each other. It is defined as “initial reference position (normal position)”.

  FIG. 31 is an enlarged view in which the slide plate 7 is partially enlarged. FIG. 31 shows a state in which the slide plate 7 is viewed from the back side. As shown in the figure, the block receiving hole 71 a of the slide plate 7 accommodates the movable block 33 held by the trunk body 321 of the operation rod 32. The movable block 33 is accommodated in the block accommodation hole 71 a so as to be slidable along the axial direction of the operation rod 32. Further, the search pin 34 also shown in FIG. 4 is inserted into the search pin insertion hole 71 b of the slide plate 7. The search pin 34 is a member used for searching for an unlock code (password) of the button lock 100. The search pin 34 includes a cylindrical pin main body portion 341, a locking piece 342 that is provided in the middle of the pin main body portion 341 and projects toward the side of the pin main body portion 341, and the pin main body portion 341. And a search pin spring 343 to be mounted.

As shown in FIG. 24, a positioning opening 35 into which the proximal end portion of the search pin 34 can be inserted is provided in the vicinity of the rod insertion hole 31 in the upper case 2. The base end portion of the search pin 34 is inserted. As shown in FIG. 31, the search pin 34 inserted through the search pin insertion hole 71 b of the slide plate 7 is positioned in a state where the locking piece 342 is in contact with the rear end surface of the movable block 33. That is, when the button lock 100 is assembled, the search pin 34 is pushed in until the locking piece 342 comes into contact with the rear end surface of the movable block 33. In this manner, the search pin 34 is attached to each of the operation rods 32 and is arranged in a posture that extends toward the rear of the push button 22 along the axial direction of the operation rod 32. When assembling the button lock 100, the search pin spring 343 of the search pin 34 is held between the back surface of the lower case 3 and the locking piece 342, and thus is held in a contracted state from the original shape. Therefore, the restoring force of the search pin spring 343 acts in a direction in which the locking piece 342 of the search pin 34 is pressed against the movable block 33 side.

  Further, on the lower short side of the slide plate 7, a pin-shaped spring holding portion 72 protrudes downward, and a guide spring 73 is attached to the spring holding portion 72. The guide spring 73 mounted on the spring holding portion 72 is sandwiched between the lower short side of the slide plate 7 and the inner wall surface of the upper case 2 and is held in a contracted state. As a result, a biasing force is applied to the slide plate 7 in a direction in which the guide spring 73 tends to extend. In addition, a square hole portion 74 which is a substantially rectangular through hole is provided at the lower corner portion of the slide plate 7. A fan-shaped portion 111 of the setting change switch 11 shown in FIGS. 2 and 4 is inserted into the square hole portion 74 (see FIG. 30).

  As shown in FIG. 4, the slide plate 7 is formed with an accommodation recess 75 that can accommodate the slide rod 40. The housing recess 75 houses the slide rod 40 so as to be slidable in the axial direction. More specifically, the relative sliding direction of the slide rod 40 with respect to the slide plate 7 coincides with the sliding direction of the slide plate 7 in the first housing portion of the housing. FIG. 30 shows the slide plate 7 in a state in which the slide rod 40 is housed in the housing recess 75. As shown in FIG. 32, the slide rod 40 has a shaft main body 41 and a plurality of arm portions 42 protruding from the side of the shaft main body 41. The arm portion 42 of the slide rod 40 is provided corresponding to the push button 22. Further, a protrusion 43 having a substantially triangular shape in side view is formed at the tip of each arm portion 42. The protrusion 43 of the arm portion 42 can be engaged with a recess 334 having a substantially pyramid shape formed on the movable block 33. Engagement between the protrusion 43 in the slide rod 40 and the recess 334 in the movable block 33 and release thereof will be described later.

  A rectangular rod through hole 44 is formed in the vicinity of the lower end of the shaft main body 41 in the slide rod 40. The opening width of the rod through hole 44 in the axial direction of the shaft main body portion 41 is larger than the width of the rising portion 92 of the rod return plate 9. Accordingly, the rising portion 92 can be slid within a predetermined range in a state where the rising portion 92 of the rod return plate 9 is inserted into the rod through hole 44. As shown in FIG. 3, a through hole 76 equivalent to the rod through hole 44 of the slide rod 40 is also formed on the slide plate 7 side. The through hole 76 provided in the slide plate 7 is disposed so that the planar position of the through hole 76 of the slide rod 40 matches with the rod through hole 44 of the slide rod 40 in a state where the slide rod 40 is housed in the housing recess 75. The details of the rising portion 92 in the rod return plate 9 will be described later.

Further, an arm control unit 45 having a rod shape projects downward from the lower end of the shaft main body 41 of the slide rod 40. A flange 451 is formed in the middle of the arm control unit 45, and the arm control unit 45 is divided into a first region portion 452 on the distal end side and a second region portion 453 on the proximal end side by the flange portion 451. It is divided. The arm control unit 45 of the slide rod 40 can control (change) the posture of the arm 36 shown in FIG. Here, the arm 36 will be described with reference to FIGS. 4 and 24. The arm 36 includes a bearing portion 361 having a cylindrical shape, a connecting portion 362 projecting from the bearing portion 361, and a rotation stopper 363.
And have.

  The bearing portion 361 is rotatably supported by a rotating shaft 37 protruding from the back surface of the upper case 2. Further, the connecting portion 362 and the rotation stopper 363 of the arm 36 protrude from the bearing portion 361 in opposite directions. A connection claw having a substantially U shape is formed at the end of the connection part 362. By connecting the collar part 451 of the arm control part 45 to the connection claw, the arm control part 45 and the arm 36 are connected. Connected. As a result, when the slide rod 40 held (accommodated) on the slide plate 7 slides up and down in the housing, the posture of the arm 36 can be changed in conjunction with this. Details regarding the operating status of the arm 36 will be described later.

  Also, as shown in FIG. 24, the first spring 454 and the second spring 455 are mounted in a contracted state on the first region 452 and the second region 453 of the arm controller 45, respectively. The first spring 454 is sandwiched between the connecting portion 362 of the arm 36 and the side wall of the upper case 2 and biases the connecting portion 362 upward. The second spring 455 is sandwiched between the connecting portion 362 of the arm 36 and the lower end portion of the shaft main body portion 41, and urges the slide rod 40 upward. The rotation stopper 363 of the arm 36 can be engaged with a fan-shaped outer peripheral projection piece 66 provided on the outer peripheral portion of the outer cylinder 6 depending on its posture. As will be described in detail later, in a state where the outer peripheral projection piece 66 of the outer cylinder 6 is locked by the rotation stopper 363, the rotation of the outer cylinder 6 in the direction corresponding to the opening operation of the operation knob 4 is restricted (restricted). ) On the other hand, in a state where the outer peripheral projection piece 66 of the outer cylinder 6 is not locked to the rotation stopper 363, the rotation operation of the outer cylinder 6 in the direction corresponding to the opening operation of the operation knob 4 is not restricted.

  Next, details of the rod return plate 9 will be described based on FIGS. 3, 32, 33 and the like. FIG. 33 is an explanatory view for explaining the detailed structure of the rod return plate 9 and shows a state in which the inner surface of the lower case 3 is viewed from the inside of the housing. The rod return plate 9 is housed in the second housing portion of the housing so as to be slidable in the vertical direction. The slide direction of the rod return plate 9 is a direction orthogonal to the slide direction of the operation rod 32 and coincides with the slide direction of the slide plate 7. The rod return plate 9 corresponds to the second plate member in the present invention.

  The rod return plate 9 has a plate body portion 93 having a substantially rectangular plate shape, and a rising portion 92 standing from the plate body portion 93. The rising portion 92 is provided in a central portion in the width direction and near the lower end of the plate main body portion 93, and extends along the long side direction of the plate main body portion 93. Further, as shown in FIG. 3, the tip of the rising portion 92 is formed with a tip step portion 921 that is one step narrower than the other portions. As shown in FIG. 32, the clear button 23 shown in FIG. 1 is also associated with a button gripping portion 231 for a user to grip and a tip step portion 921 of a rising portion 92 provided on the rod return plate 9. It has a substantially U-shaped engaging recess 232 to be joined. The button lock 100 is assembled in a state in which the tip step portion 921 of the rising portion 92 of the rod return plate 9 is engaged with the engagement recess 232 of the clear button 23. Thereby, when the clear button 23 is slid, the rod return plate 9 is also slid in conjunction.

Further, a plurality of claw portions 91 and a plurality of inclined protrusions 94 are provided on the surface of the plate main body portion 93 of the rod return plate 9. The claw portions 91 and the inclined protrusions 94 in the plate main body portion 93 are disposed close to each other so as to correspond to the push buttons 22. Here, the claw portion 91 of the rod return plate 9 is selectively fitted into any one of the first recess pair 321a and 321a and the second recess pair 321b and 321b in the trunk body 321 of the operation rod 32. It has become. A state in which the operating rod 32 is held by the rod return plate 9 by fitting the claw portion 91 of the rod return plate 9 to one of the first concave pair 321a and 321a and the second concave pair 321b and 321b. It becomes. And the holding | maintenance state of the rod 32 for operation by the rod return plate 9 is changed by switching the other party which the nail | claw part 91 fits between 1st recessed part pair 321a, 321a and 2nd recessed part pair 321b, 321b. The

  The rod return plate 9 is slidably held in the vertical direction in the housing. When the rod return plate 9 is at the “initial reference position”, the claw portions 91 are positioned behind the corresponding operation rods 32, It arrange | positions in the position which can be fitted in either the 1st recessed part pair 321a, 321a and the 2nd recessed part pair 321b, 321b (refer FIG. 29). The state shown in FIG. 29 shows a state in which both the slide plate 7 and the rod return plate 9 are at their initial reference positions. A holding pin 98 for holding the rod return plate spring 97 protrudes downward on the lower short side of the plate main body 93. The rod return plate spring 97 is interposed between the protruding piece 300 protruding from the inner surface of the lower case 3 and the plate main body 93. The rod return plate 9 is always pressed upward by the urging force of the rod return plate spring 97.

  Furthermore, the rod return plate 9 has a side arm 95 that protrudes laterally from the middle part of the long side of the plate body 93. As shown in FIG. 32, the side arm 95 is fitted in a substantially U-shaped engaging recess in the hook base 38. The hook base 38 is a member connected to an arm 39 with a hook shown in FIGS. As illustrated, the lower case 3 is provided with a substantially rectangular opening window 301. The opening window 301 is a vertically long opening in the vertical direction of the button lock 100.

  The hook base 38 is provided on the back surface side of the lower case 3, that is, on the inner side of the housing, a slide portion 382 that is provided on the base portion 381 and can be inserted into the opening window 301, and protrudes from the slide portion 382. And a shaft portion 383 exposed to the outside of the housing. The base portion 381 has a larger projected area than the opening window 301 and cannot pass through the opening window 301. On the other hand, the slide portion 382 is inserted into the opening window 301 and can slide within a predetermined range along the long side direction of the opening window 301, that is, the vertical direction of the button lock 100. As shown in the figure, the shaft portion 383 supports the connecting portion 391 of the arm 39 with a hook so as to be relatively rotatable, and is connected to the connecting portion 391 by a screw or the like.

  As shown in FIG. 34, a hook spring 392 is attached to the arm 39 with a hook. The hook spring 392 is interposed between the lower case 3 and the hooked arm 36 in a contracted state, and the hooked arm 39 is urged upward by the hook spring 392. A hook 393 is formed on the tip side of the arm 39 with hook. As shown in FIGS. 16 and 34, an outer cylinder claw portion 67 that engages with the hook 393 of the arm 39 with the hook is formed on the outer peripheral portion on the back side of the outer cylinder 6.

<Operation during unlocking / locking>
[Operation when unlocked]
Next, the details of the operation when the button lock 100 is unlocked and locked will be described in detail. First, the operation when unlocking the locked button lock 100 will be described. In a state where the button lock 100 is locked, the operation dial 4 is set to the CLOSE position 26 as shown in FIG. Further, as will be described later, when the button lock 100 is locked, all the operation rods 32 are automatically cleared and returned to the clear position in the state where they are not pushed. The operation rod 32 returned to the clear position is, as shown in FIG. 36, the first recess pair 321a, 321.
In this state, the claw portion 91 of the rod return plate 9 is fitted to a (hereinafter referred to as “rod first holding state”).

  From this state, when unlocking the button lock 100, the user performs a push operation of the push button 22 in accordance with the set unlock code. When the push button 22 of the button lock 100 is pushed, the operation rod 32 incorporated in the pushed push button 22 slides in the axial direction from the clear position and is pushed into the housing. Hereinafter, the position of the operating rod 32 at this time is referred to as a “push-in position”. As shown in FIG. 37, the operation rod 32 displaced from the clear position to the push-in position is in a state where the claw portion 91 of the rod return plate 9 is fitted in the second recess pair 321b, 321b (hereinafter referred to as “rod second Holding state). The claw portion 91 of the rod return plate 9 corresponds to a holding unit that holds the operating rod 32 in the pushed position when the operating rod 32 is displaced from the clear position to the pushed position. Further, the claw portion 91 of the rod return plate 9 engages with the second recess pair 321b, 321b as the engaged portion formed on the operation rod 32 when the operation rod 32 is displaced to the pushing position. It can also be said to be an engaging part.

  The operation rod 32 is displaced from the clear position to the push position by being pushed into the housing when the corresponding push button 22 is pushed. Thus, only the operation rod 32 corresponding to the pushed push button 22 is brought into the second holding state by the push operation of the push button 22 (see FIG. 37), and the operation rod corresponding to the push button 22 not pushed is used. The rod 32 is maintained in the first holding state (see FIG. 36). When the button lock 100 is unlocked, the push button 22 pushed in by the user is always pushed up by the button spring 223, so that the button opening 211 is buried when the user's finger is released. It shifts from the state which protruded to the state which protrudes outside.

  The button lock 100 has a structure in which an unlock code can be arbitrarily set. Although the unlocking code setting method will be described later, the button lock 100 is an operation rod attached to the push button 22 corresponding to the unlocking code (hereinafter, also simply referred to as “operation rod corresponding to the unlocking code”). ) 32 and a movable rod 33 with respect to the operation rod 32 in the operation rod (hereinafter simply referred to as “operation rod not corresponding to the unlocking code”) 32 attached to the push button 22 not corresponding to the unlocking code. The engagement positions (holding positions) are different. Specifically, the operation rod 32 that does not correspond to the unlocking code holds the movable block 33 in the first holding position, and the operation rod 32 that corresponds to the unlocking code holds the movable block 33 in the second holding position. The The changing operation of the holding position of the movable block 33 with respect to the operation rod 32 according to whether or not it corresponds to the unlocking code will be described later.

  As described above, the movable block 33 is provided with the recess 334, and the recess 334 has a shape complementary to the protrusion 43 of the slide rod 40. In the state shown in FIG. 29, all the operating rods 32 are in the rod first holding state, and the movable block 33 is mounted at the first holding position. Referring to the relationship between the mounting position of the movable block 33 in the operating rod 32 and the holding state of the operating rod 32 by the claw portion 91 of the rod return plate 9, first, the operating rod 32 in the rod first holding state is When the movable block 33 is mounted at the first holding position, the positions of the concave portion 334 of the movable block 33 and the projection 43 of the slide rod 40 match, and the projection 43 can be fitted into the concave portion 334. (See FIG. 29). The concave portion 334 of the movable block 33 corresponds to the fitted portion in the present invention. Further, the protrusion 43 of the slide rod 40 that can be fitted into the concave portion 334 of the movable block 33 corresponds to the fitting portion in the present invention.

Further, in this embodiment, the displacement displacement amount of the movable block with respect to the operation rod 32 when the first holding position is changed to the second holding position indicates that the operation rod 32 is moved from the rod first holding state to the rod second holding state. It is adjusted so as to coincide with the relative movement amount of the operating rod 32 when changed to. Accordingly, although not shown, when the operating rod 32 is in the rod second holding state, the concave portion 334 of the movable block 33 is mounted by mounting the movable block 33 at the second holding position instead of the first holding position. And the position of the projecting portion 43 of the slide rod 40 coincide with each other, and the projecting portion 43 can be fitted into the recess.

  In other words, when the operation rod 32 with the movable block 33 attached to the first holding position is in the second holding state, or the operation rod 32 with the movable block 33 attached to the second holding position holds the first. When in the state, the positions of the concave portion 334 of the movable block 33 and the protrusion 43 of the slide rod 40 do not match, and are shifted in the front-rear direction. FIG. 38 is a diagram illustrating the relative relationship between the recess 334 and the protrusion 43 when the operation rod 32 with the movable block 33 mounted at the second holding position is in the first holding state. Since the relative positions of the recess 334 of the movable block 33 and the protrusion 43 of the slide rod 40 are shifted, the protrusion 43 cannot be fitted (accommodated) in the recess 334. In this case, since the top of the projection 43 in the slide rod 40 interferes with the edge of the recess 334 in the movable block 33, the projection 43 can be pushed downward by the depth of the recess 334. Further, the protrusion 43 of the slide rod 40 is provided at the tip of each arm 42, and each arm 42 is integrated with the shaft main body 41. Therefore, when even one of the protrusions 43 on the slide rod 40 is displaced relative to the recess 334 of the movable block 33, the slide rod 40 slides downward from the initial reference position.

  In the example shown in FIG. 39, among the operation rods 32 indicated by reference signs A to E, B and D are held at the second holding position, and the movable block 33 is held at the second holding position, and A, C, and E are moved at the first holding position. Block 33 is held. In the example of this figure, among the operation rods 32 indicated by A to E, B and D in which the movable block 33 is held at the second holding position are the operation rods 32 corresponding to the unlocking codes. None of the operating rods 32 according to B and D are pushed. Accordingly, in the illustrated example, the push buttons 22 of the button lock 100 are not aligned with the unlocking code.

  As described above, when the push button 22 of the button lock 100 is not aligned with the unlocking code, the positions of the concave portion 334 of the movable block 33 and the protrusion 43 of the slide rod 40 match with respect to at least one of the operation rods 32. Instead, the slide rod 40 is pushed downward from the initial reference position. Then, as shown in FIG. 40, the arm controller 45 in the slide rod 40 pushes down the connecting portion 362 of the arm 36. Since the arm 36 is pivotally supported on the rotation shaft 37 of the upper case 2, the rotation stopper 363 is pushed up, contrary to the connecting portion 362 pushed down by the arm control unit 45. As a result, the rotation stopper 363 of the arm 36 is locked to the outer peripheral projection piece 66 of the outer cylinder 6 and the rotation of the outer cylinder 6 in the opening direction (clockwise in FIG. 40) is restricted. As long as the emergency unlocking key 14 and the cylinder replacement key 15 are not inserted into the keyhole 51, the relative rotation between the cylinder 5 and the outer cylinder 6 is restricted, and the cylinder 5 and the operation knob 4 attached to the cylinder 5 are controlled. And has a structure that cannot be rotated relative to each other. Therefore, when the push button 22 of the button lock 100 is not aligned with the unlocking code, that is, when the push button 22 is not pushed according to the unlocking code, the rotation stopper 363 of the arm 36 is provided with the outer cylinder 6. The opening operation of the operation knob 4 can be regulated by being locked to the outer peripheral projection piece 66.

It should be noted that when all the push buttons 22 corresponding to the unlocking code are pushed and none of the push buttons 22 corresponding to the unlocking code is pushed, the push button 22 of the button lock 100 is unlocked. It becomes a state aligned with the code. In this state, since the relative positions of the concave portion 334 of the movable block 33 and the protrusion 43 of the slide rod 40 are the same for all the operation rods 32, the slide rod 40 is not pushed down due to the interference with the movable block 33. Does not happen. In this case, as in the state shown in FIG. 24, the outer peripheral projection piece 66 of the outer cylinder 6 is not locked to the rotation stopper 363.

  As described above, the cylinder 5 and the stopper 10 are connected via the drive shaft 12 (see FIG. 8), and the operation knob 4 and the cylinder 5 are engaged with the engagement claw portion 43 and the engagement portion 53. (See FIG. 11). In addition, relative rotation of the cylinder 5 and the outer cylinder 6 is restricted by the engagement of the tumbler 54 and the locking groove 61 during normal use. On the other hand, in the state where the push buttons 22 of the button lock 100 are aligned with the unlocking code, the outer cylinder 6 is not locked by the rotation stopper 363, and therefore the operation knob 4 connected to the outer cylinder 6 and the cylinder 5. The button lock 100 is unlocked in an internal mechanism. As the operation knob 4 is opened, the cylinder 5 and the stopper 10 rotate together. Thereby, the posture of the stopper 10 can be changed from the locking position to the disengagement position, and the stopper 10 can be disengaged from the counterpart member of the object to be locked, and can be unlocked in an external mechanism.

  As described above, the button lock 100 is capable of restricting the operation of the operation knob 4, and is a restriction that releases the restriction of the operation knob operation when only the operation rod 32 corresponding to the unlocking code is in the pushing position. Means. This restricting means includes a concave portion 334 of the movable block 33, a projection 43 of the slide rod 40, a rotation stopper 363 of the arm 36, an outer peripheral projection piece 66 of the outer cylinder 6, and the like. Then, as shown in the above description of the unlocking operation, the restricting means is in a state where the push buttons 22 of the button lock 100 are aligned with the unlocking code, that is, the movable block 33 is mounted at the first holding position. When all of the operating rods 32 are in the clear position and all of the operating rods 32 in which the movable block 33 is mounted at the second holding position are in the pushed position, the restriction of the operation of the operation knob 4 is released. can do.

[Operation when locking]
Next, the operation | movement at the time of locking the button lock 100 is demonstrated. In the button lock 100 according to this embodiment, the operation knob 4 of the button lock 100 in the unlocked state, that is, the state in which the push button 22 is aligned with the unlock code, is adjusted from the OPEN position 25 to the CLOSE position 26. It is structured to be automatically locked by performing the closing operation.

  When the user performs the closing operation of the operation knob 4 on the button lock 100 in the unlocked state, the cylinder 5 and the outer cylinder 6 rotate in the closing direction together with the operation knob 4. Here, with reference to FIG. 34, the relative relationship between the outer cylinder 6 and the arm 39 with a hook is demonstrated. FIG. 34 shows the button lock 100 as viewed from the back side, so that the outer cylinder 6 rotates counterclockwise in the figure when the operation knob 4 is closed. The outer cylinder claw portion 67 of the outer cylinder 6 can lock the hook 393 of the arm 39 with the hook when the outer cylinder 6 rotates in the closing direction (counterclockwise direction in the drawing). ing. On the other hand, when the outer cylinder 6 rotates in the opening direction (clockwise direction in the figure), both hooks 393 of the arm 39 with the hook are not locked by the outer cylinder claw portion 67 of the outer cylinder 6. The relative relationship of the members is defined.

  When the outer cylinder 6 rotates in the closing direction in accordance with the operation knob closing operation as described above, the hook 393 of the arm 39 with the hook is locked by the outer cylinder claw portion 67 of the outer cylinder 6 as shown in the figure. Therefore, the arm 39 with the hook is pulled down against the hook spring 392. When the hooked arm 39 slides downward in this manner, the hook base 38 connected to the hooked arm 39 with the lower case 3 interposed therebetween also slides downward. At this time, as shown in FIG. 32, the hook base 38 is engaged with the side arm 95 of the rod return plate 9 at its engaging recess, so that the rod return plate 9 is also linked to the hook base 38. Slide down from the initial reference position. A clear button 23 is attached to the rising portion 92 of the rod return plate 9. Therefore, when the outer cylinder 6 rotates in the closing direction, the clear button 23 slides in conjunction with this.

  As described above, when the rod return plate 9 slides downward from the initial reference position in conjunction with the rotation of the outer cylinder 6 in the closing direction, as shown in FIG. The fitting state of the claw portion 91 of the rod return plate 9 fitted to 321a, 321a or the second recess pair 321b, 321b is released. Since the operating rod 32 is pulled forward by the urging force of the rod spring 324 shown in FIG. 25, the pushed operating rod 32 is returned to a predetermined clear position. Until the holding of the operating rod 32 by the claw portion 91 of the rod return plate 9 is released, only the operating rod 32 corresponding to the unlocking code is pushed in, so here the operating rod corresponding to the unlocking code is used. Only the rod 32 is returned to the clear position (the operation rod 32 that does not correspond to the unlocking code is originally in the clear position).

  As described above, the button lock 100 includes clearing means for displacing the operation rod 32 to the clear position. This clearing means slides the rod spring 324 as a biasing member that biases the operating rod 32 in the direction to return it from the push-in position to the clear position, and the rod return plate 9 to slide with the concave portion 334 of the movable block 33. Slide means for releasing the fitting with the protrusion 43 of the rod 40. The sliding means cooperates with the closing operation of the operation knob 4 in a state where the stopper 10 is in the disengagement posture, and slides the rod return plate 9 in the downward direction, the outer cylinder claw portion 67 of the outer cylinder 6; It includes the hook 393 of the arm 39 with hook, the hook base 38 and the like.

  The rod return plate 9 has an inclined projection 94 projecting from the plate body 93. Therefore, when the rod return plate 9 slides downward in accordance with the closing operation of the operation knob 4, the inclined surface of the inclined protrusion 94 is a groove 325 provided at the end of the operation rod 32 (see FIGS. 25 and 27). It collides with the inclined surface 325a. That is, the inclined protrusion 94 of the rod return plate 9 pushes up the operation rod 32 from the pushed-in position toward the clear position, so that the fitting state of the claw 91 with respect to the operation rod 32 can be reliably released. Therefore, the operation rod 32 corresponding to the unlocking code can be reliably cleared.

  As described above, when the operation rod 32 corresponding to the unlocking code is returned to the clear position, the push button 22 of the button lock 100 shifts to a state where the pushbutton 22 is not aligned with the unlocking code. That is, as described with reference to FIG. 38 and FIG. 39, all the operating rods 32 are in the first holding state, so The position and the position of the protrusion 43 of the slide rod 40 are shifted from each other, and the slide rod 40 slides downward from the initial reference position. As a result, as shown in FIG. 40, the posture of the arm 36 is changed by the arm control unit 45 in the slide rod 40, and the rotation stopper 363 is pushed up to be locked to the outer peripheral projection piece 66 of the outer cylinder 6. . As a result, the rotation of the outer cylinder 6 in the opening direction is restricted, and the opening operation of the operation knob 4 is restricted.

  Thereafter, in the process of rotating the operation knob 4 to the CLOSE position 26, as shown in FIG. 42, the hook 393 of the arm 39 with the hook is detached from the outer cylinder claw portion 67 of the outer cylinder 6, so that the both are locked. Is released. As a result, the arm 39 with the hook is pushed up by the biasing force of the hook spring 392, and the hook base 38, the rod return plate 9, and the clear button 23 are pushed up to the original normal position. Then, after the position of the operation knob 4 reaches the CLOSE position 26, the operation knob 4 cannot be rotated in the opening direction, and thus the internal mechanical locking of the button lock 100 is completed. Since the operation knob 4, the cylinder 5, and the stopper 10 are integrated, the stopper 10 is rotated to the locking position by rotating the operation knob 4 to the CLOSE position 26 by the closing operation. As a result, the stopper 10 is locked to the counterpart member of the object to be locked, whereby the locking of the button lock 100 is completed in terms of the external mechanism.

  By the way, in the conventional button lock, it is necessary not only to align the push button with the unlock code at the time of unlocking but also to push the push button again in accordance with the unlock code at the time of locking. On the other hand, according to the button lock 100 in this embodiment, it is possible to lock only by closing the operation knob 4 from the unlocked state as described above. Therefore, it can be said that the button lock 100 according to the present embodiment is more convenient than the conventional one.

[indicator]
The operating state of the indicator 13 when the button lock 100 is locked and unlocked will be described. As shown in FIG. 14, in the display unit 132 of the indicator 13, for example, the first display area 132A is painted in a color reminiscent of the locked state such as red, and the second display area 132B is blue or green. It is painted in a color that recalls the lock state. However, the color coding of the display unit 132 is not limited to the above example, and a region may be divided by attaching a sticker to the display unit 132 or by other appropriate methods. Further, the display unit 132 of the indicator 13 can be visually recognized from the outside through the display window 24 of the front panel 21.

  When the operation knob 4 is closed when the button lock 100 is locked, the indicator 13 is also rotated in conjunction with the cylinder 5 by the engagement between the protrusion 533 of the cylinder 5 and the edge of the notch 131D of the indicator 13. To do. Thereby, the display part 132 of the indicator 13 visually recognized through the display window 24 of the front panel 21 is switched to the first display area 132A (for example, red) instead of the second display area (for example, blue or green). On the other hand, if the operation knob 4 is opened when the button lock 100 is unlocked, the indicator 13 rotates in the direction opposite to that when the button 5 is locked in conjunction with the cylinder 5, so the indicator 13 is displayed through the display window 24 of the front panel 21. The second display area (for example, blue or green) becomes visible.

[Set unlock code]
Next, a method for setting the unlock code in the button lock 100 will be described. As described above, the button lock 100 can arbitrarily set the unlock code. The setting change of the unlock code is performed in a state where the button lock 100 is unlocked. More specifically, the setting change of the unlock code is performed by operating the setting change switch 11 as described later. Normally, the setting change switch 11 is positioned at a fixed position 302 printed on the rear panel 30. The setting change switch 11 can be switched to the reset position 303 and the setting position 304 in addition to the fixed position 302 by the user (see FIG. 2). The setting change switch 11 corresponds to an operation switch unit in the present invention.

  The setting change switch 11 can be switched from the fixed position 302 to the reset position 303 or the setting position 304 only when the button lock 100 is unlocked internally. That is, when the button lock 100 is locked by an internal mechanism, the setting change switch 11 has a structure in which switching operation from the fixed position 302 to the reset position 303 or the setting position 304 is restricted. That is, only when the button lock 100 is unlocked, the unlock code setting change operation is possible.

  When setting the unlock code, first, the setting change switch 11 on the back of the button lock 100 is rotated from the fixed position 302 printed on the rear panel 30 to the reset position 303. As shown in FIGS. 3 and 4, the setting change switch 11 includes a disk-shaped operation unit 112 and a shaft unit 113 connected to the operation unit 112. The operation unit 112 is exposed to the outside through the opening of the rear panel 30 as shown in FIG. An operation groove is formed on the surface of the operation unit 112. The user can switch the setting change switch 11 to any one of the fixed position 302, the reset position 303, and the setting position 304 shown in FIG. 2 by inserting a coin or the like in the groove of the operation unit 112 and rotating the coin. Yes.

  In addition, a disc portion 114 having a disc shape is provided in the vicinity of the base end portion connected to the operation portion 112 of the shaft portion 113 in the setting change switch 11, and the back surface of the disc portion 114. A rod-shaped pin 115 (see FIG. 43) protrudes. Further, a fan-shaped portion 111 having a fan-shaped (substantially a quarter circle) cross section is formed in a region below the disc portion 114 in the shaft portion 113. The distal end side of the shaft portion 113 is rotatably attached to the upper case 2. As shown in FIGS. 3 and 4, the plate main body 93 of the rod return plate 9 avoids interference between the shaft 113 (fan-shaped portion 111) and the plate main body 93 in the setting change switch 11. A notch recess 96 is formed.

  43 and 44 are diagrams showing the relative relationship between the rod return plate 9 and the shaft portion 113 of the setting change switch 11. In both figures, the back surface of the rod return plate 9, that is, the surface on which the above-mentioned claw portion 91 is not provided is shown. As shown in FIGS. 4, 43, 44, and the like, the plate body portion 93 has a lower corner portion from the disk portion 114 when the operation portion 112 of the setting change switch 11 is rotated counterclockwise. A pin receiving portion 97 for receiving and locking the protruding pin 115 is formed. In addition, as shown in FIG. 30, the sector part 111 of the setting change switch 11 is inserted into the square hole part 74 of the slide plate 7. FIG. 30 shows the relative relationship between the fan-shaped portion 111 and the square hole portion 74 in a state where the setting change switch 11 is set to the fixed position 302. FIG. 43 shows the relative relationship between the pin 115 and the pin receiving portion 97 in a state in which the setting change switch 11 is set to the fixed position 302.

  As described above, the position of the setting change switch 11 is changed from the fixed position 302 to the reset position 303 by the user. At that time, first, in the process of the position of the setting change switch 11 from the fixed position 302 to the setting position 304, the fan-shaped portion 111 of the setting change switch 11 presses the edge of the square hole portion 74 of the slide plate 7 on its side surface. . As a result, the slide plate 7 slides downward from the initial reference position. As described above, since the slide rod 40 is housed in the housing recess 75 of the slide plate 7, the slide rod 40 also slides downward from the initial reference position together with the slide plate 7. That is, in the process where the position of the setting change switch 11 reaches from the fixed position 302 to the setting position 304, the slide plate 7 and the slide rod 40 in the housing are integrally slid downward from the initial reference position. Even when the fixed position 302 is switched to the set position 304, the rod return plate 9 is held at the initial reference position.

  As described above, when the slide plate 7 slides downward from the initial reference position, the mounting state of the movable block 33 mounted on the operation rod 32 is released, and the movable block 33 is moved from the operation rod 32 to the movable block 33. break away. As described above, a position where the movable block 33 housed in the block housing hole 71a of the slide plate 7 sliding inside the housing is separated from the operation rod 32 is referred to as a “separation position”. Then, as shown in FIGS. 45 and 46, the fitting of the movable block 33 to the operation rod 32 is released, and the unlocking code in the button lock 100 can be set. In the present embodiment, the initial reference position at which the movable block 33 is maintained in the state of being attached to the operation rod 32 by the sector 111 of the setting change switch 11 sliding the slide plate 7 as the first plate member. It corresponds to switching means for switching the attachment / detachment state of the movable block 33 with respect to the operation rod 32 between the (initial position) and the separation position where the movable block 33 is maintained in the state of being detached from the operation rod 32. When the setting change switch 11 (operation switch unit) is operated to the fixed position 302 as the normal position, the slide plate 7 is held at the initial position, and the setting change switch 11 switches from the fixed position 302 to the setting position 304. When it is, the slide plate 7 is slid from the initial reference position to the disengagement position.

  Now, since the button lock 100 is in the unlocked state, the operation rod 32 corresponding to the unlocking code is in the second rod holding state, and the operating rod 32 not corresponding to the unlocking code is in the first holding state. is there. That is, when the unlock code is set, the button lock 100 is in the unlocked state, and therefore the operation rods 32 in the rod first holding state and the rod second holding state are mixed. Therefore, in the present embodiment, the position of the setting change switch 11 is further changed from the setting position 304 to the reset position 303. Then, as shown in FIG. 44, the pin 115 provided on the disc portion 114 of the setting change switch 11 is engaged with the pin receiving portion 97 of the rod return plate 9, and the rod return plate 9 is moved downward from the initial reference position. And slide. When the rod return plate 9 slides downward from the initial reference position, the claw portion 91 as the engaging portion becomes the first recess pair 321a, 321a or the second recess pair 321b, 321b of the operation rod 3 as the engaged portion. The two are disengaged from each other.

  Furthermore, since the rod return plate 9 is provided with the inclined protrusion 94, the inclined protrusion 94 of the rod return plate 9 collides with the inclined surface 325a of the operation rod 32 in the second holding state. The operating rod 32 in the second holding state is pushed up. As a result, all the operation rods 32 are reliably cleared to the clear position (the operation rods 32 in the first holding state are originally held at the clear position).

  Next, the setting change switch 11 is rotated in the reverse direction and returned from the reset position 303 to the setting position 304. By this operation, the relationship between the pin 115 in the setting change switch 11 and the pin receiving portion 97 of the rod return plate 9 returns from the relationship shown in FIG. 44 to the relationship shown in FIG. That is, the engagement state between the pin 115 in the setting change switch 11 and the pin receiving portion 97 in the rod return plate 9 is released. As a result, the rod return plate 9 is not pressed downward by the pin 115 of the setting change switch 11, so that the rod return plate 9 is pushed up by the urging force of the rod return plate spring 97. That is, in the housing, the rod return plate 9 slides upward to return to the original position.

  As a result, the rod first holding state in which the claw portion 91 of the rod return plate 9 is fitted to the first concave pair 321a and 321a of the operation rod 32 is achieved. At this time, the slide plate 7 and the slide rod 40 held by the slide plate 7 are still held in a state of sliding downward, and the movable block 33 is detached from the operation rod 32.

  From this state, the user performs an operation of pushing the push button 22 corresponding to the newly set unlock code. Then, only the operation rod 32 corresponding to the new unlocking code is shifted from the rod first holding state to the rod second holding state. That is, only the operation rod 32 corresponding to the new unlocking code is engaged with the claw portion 91 of the rod return plate 9 in the second recess pair 321b, 321b of the trunk body 321 as shown in FIG. Thus, the rod is changed to the second holding state. On the other hand, the other operation rods 32 are held in the rod first holding state.

Here, the movable block 33 is held in a detached state with respect to each operation rod 32. From this state, the user rotates the setting change switch 11 from the setting position 304 to the fixed position 302. If it does so, the press state by the sector part 111 of the setting change switch 11 which was pressing the edge part of the square hole part 74 until then will be cancelled | released. As a result, the slide plate 7 and the slide rod 40 are integrally pushed up by the urging force of the guide spring 73 and return to the initial reference position. Since the movable block 33 is accommodated in the block accommodating hole 71a of the slide plate 7, the movable block 33 is attached to the operation rod 32 by sliding the slide plate 7 back to the original initial reference position. Is done. When the setting change switch 11 is rotated from the setting position 304 to the fixed position 302, the slide rod 40 is also slid to the original initial reference position. Therefore, the protrusion 43 of the slide rod 40 is fitted into the concave portion 334 of the movable block 33 mounted at the first holding position or the second holding position of each operation rod 32.

  For example, when changing the setting of the unlock code, when the setting change switch 11 is set to the setting position 304, the user presses the push button 22 corresponding to “2”, “5”, “7”, “8”. When pushed, the operation rods 32 corresponding to these are in the second rod holding state in relation to the claw portion 91 of the rod return plate 9, and the other operation rods 32 are in the lock first holding state. When the setting change switch 11 is set to the fixed position 302 from this state, the operation rod 32 corresponding to “2”, “5”, “7”, “8” in the rod second holding state is set. The movable block 33 is mounted at the second holding position, and the movable block 33 is mounted at the first holding position for the other operating rods 32.

  As described above, the setting change of the unlocking code is completed by changing the mounting position of the movable block 33 with respect to the operation rod 32 based on the new unlocking code selected by the user. As described above, according to the button lock 100 according to the present embodiment, the unlock code can be set to an arbitrary code. Since the button lock 100 is in the unlocked state when the unlock code setting is completed, as described above, automatic operation is performed by closing the operation knob 4 from the OPEN position 25 to the CLOSE position 26. Thus, the button lock 100 can be locked.

  In the unlocking code setting method for the button lock 100 described above, the setting change switch 11 is temporarily rotated from the fixed position 302 to the reset position 303 when the button lock 100 changes the unlocking code setting. This is because at least one operation rod 32 is pushed when the button lock 100 is unlocked in the unlocked state. Thus, since at least one operation rod 32 is in the rod second holding state, in this embodiment, after all the operation rods 32 are once cleared to the clear position, the setting change switch 11 is set to the set position. At the same time, the push button 22 is pushed in. Thereby, when changing the setting of the unlocking code related to the button lock 100, the unlocking code can be reliably changed to a desired setting.

  In the button lock 100 according to the present embodiment, the user can arbitrarily set the unlock code as described above, but in particular, the push button 22 is pressed from the front side of the button lock 100. The point which can perform a setting change work by dynamic operation is excellent.

  That is, in the conventional button lock, an operation switch corresponding to each push button is provided on the back side where no push button is provided, and the unlocking code is set by switching the operation switch. The changing structure is adopted. In such a conventional unlocking code setting change mechanism, when the button lock is installed at a place where the back surface is difficult to see, such as when the button lock is applied to a drawer, etc., the unlocking code setting change is performed. There is a problem that it is difficult to work. As described above, in the conventional button lock, depending on the installation conditions of the button lock, the operation switch for changing the setting of the unlock code must be operated in a state in which it is difficult to visually recognize. There is a possibility of causing a setting error (error) in which a new unlocking code is not set.

On the other hand, according to the button lock 100 according to the present embodiment, since the unlock code can be set by the push operation of the push button 22 from the front side of the button lock 100, the unlock code setting change The workability of the work can be improved as compared with the prior art, and the new unlocking code can be changed to the code intended by the user more reliably. That is, it is possible to suitably suppress occurrence of an unlock code setting error. In the button lock 100 of the present embodiment, the setting change switch 11 itself is provided on the lower case 3 side. However, the setting change switch 11 is operated at the start and end of the unlocking code setting operation. Therefore, the workability of the unlocking code setting change operation is not lowered. Since the unlocking code setting operation itself is performed by pressing the push button 22 provided on the front side of the button lock 100, an unlocking code setting error does not occur.

  Here, a description will be given of a structure that allows an unlocking code setting change operation only when the button lock 100 is unlocked. As shown in FIGS. 3, 4, etc., the middle plate 8 is formed with a block accommodating recess 81 that can accommodate the movable block 33. As described above, the operation rod 32 that does not correspond to the unlocking code has the movable block 33 held in the first holding position, and the operation rod 32 that corresponds to the unlocking code has the movable block 33 in the second holding position. Is retained.

  Here, when the operation rod 32 that does not correspond to a certain unlocking code is pushed into the second rod holding state when the middle plate 8 is at the initial reference position, the movable block 33 attached to the operation rod 32 is placed. Is in a state of being disposed across both the block accommodation hole 71 a of the slide plate 7 and the block accommodation recess 81 of the middle plate 8. That is, the front side of the movable block 33 is housed in the block housing hole 71 a and the rear side is housed in the block housing recess 81. In this state, even if the setting change switch 11 is switched from the fixed position 302 to another position, since the movable block 33 is inserted into both the block accommodation hole 71a and the block accommodation recess 81, the slide plate 7 is moved to the initial position. Sliding downward from the reference position is restricted.

  On the other hand, when the operation rod 32 corresponding to the unlocking code is not pushed in, that is, in the rod first holding state, the movable block 33 is formed with a block receiving recess 28 ( 4) and the block accommodating hole 71a of the slide plate 7 are arranged across the block receiving hole 71a. That is, in this case, the front side of the movable block 33 is housed in the block housing recess 28 and the rear side is housed in the block housing hole 71a. The block housing recess 28 of the upper case 2 is disposed to face the block housing recess 81 of the middle plate 8 and is also positioned with the block housing hole 71a of the slide plate 7 when the slide plate 7 is in the initial reference position. Match. In this state, even if the setting change switch 11 is to be switched from the fixed position 302 to another position, the movable block 33 is inserted into both the block receiving recess 28 of the upper case 2 and the block receiving hole 71a of the slide plate 7. Therefore, sliding the slide plate 7 downward from the initial reference position is restricted.

  As described above, in a state in which the button lock 100 is locked in an internal mechanism, the slide plate 7 is restricted from sliding from the initial reference position, so the setting change switch 11 is switched from the fixed position 302 to another position. Is limited. When only the operation rod 32 corresponding to the unlocking code is pushed in and the rod is in the second holding state, the entire movable block 33 attached to all the operation rods 32 is accommodated in the block of the slide plate 7. It is accommodated in the hole 71a. In this state, since the slide of the slide plate 7 from the initial reference position is not hindered, the setting change switch 11 can be switched from the fixed position 302 to another position. In this way, when the button lock 100 is unlocked, the unlock code setting change operation can be performed.

<Search unlock code>
Next, a method for searching for an unlock code in the button lock 100 will be described. The button lock 100 is provided with a mechanism for searching for an unlock code. As described above, the button lock 100 according to the present embodiment can be forcibly unlocked by using the emergency unlock key 14 when the user forgets the unlock code. Although the emergency unlocking method using the emergency unlocking key 14 is as described above, the button lock 100 has an unlocking code retrieval mechanism, and retrieves the unlocking code at the time of emergency unlocking. can do. Hereinafter, the unlock code retrieval mechanism will be described in detail.

  Since the emergency unlocking of the button lock 100 using the emergency unlocking key 14 has already been described, the details are omitted here. The search for the unlocking code is performed after the emergency unlocking of the button lock 100 is completed, the stopper 10 is rotated from the locking position to the release position, and the locking object such as a locker door is opened, for example. This is realized by pressing all the push buttons 22 in the lock 100. More specifically, when the push button 22 is pushed as described above, the operation rod 32 is also pushed together. At that time, the movable block 33 attached to the operation rod 32 also moves relative to the middle plate 8 in the block accommodating hole 71 a of the slide plate 7.

  Here, as shown in FIG. 31, the search pin 34 is inserted into the search pin insertion hole 71 b of the slide plate 7, and the search pin 34 has its locking piece 342 on the rear end surface of the movable block 33. Positioned and held in contact. That is, the search pin 34 is attached to the operation rod 32 via the movable block 33. Then, when the movable block 33 mounted on the operation rod 32 slides toward the middle plate 8 in conjunction with the push-in operation of the push button 22 during the unlock code search, it is locked to the rear end surface of the movable block 33. The search pin 34 on which the piece 342 is hooked also slides in conjunction with the operation rod 32 and the movable block 33.

  As shown in FIG. 3, the middle plate 8 is provided with through holes 83 through which the search pins 34 are inserted. As shown in FIGS. 2, 4, 5, etc., the lower case 3 is formed with a pin insertion hole 305 through which the distal end side of each search pin 34 can be inserted. In the vicinity of each pin insertion hole 305 on the outer surface of the lower case 3, a mark 306 indicating which push button 22 corresponds to the pin insertion hole 305 is displayed. Here, numbers “0” to “9” are printed on the lower case 3. Further, the rear panel 30 is provided with an insertion hole 305 into which the search pin 34 corresponding to the push button 22 with the “*” mark can be inserted, and a “*” mark 306 is printed in the vicinity thereof. The pin insertion hole 305 corresponds to the pin protruding hole in the present invention.

  Here, paying attention to the relationship between the operation rod 32 and the movable block 33, the mounting position of the movable block 33 with respect to the operation rod 32 differs depending on whether or not it corresponds to the unlocking code. That is, the movable block 33 is mounted at the second holding position on the operating rod 32 corresponding to the unlocking code, and the movable block 33 is mounted on the other operating rod 32 at the first holding position. Since the second holding position of the operation rod 32 is located closer to the head 323 at the front end than the first holding position, the movable block 33 attached to the operation rod 32 that does not correspond to the unlocking code. This is positioned closer to the middle plate 8 side than the movable block 33 attached to the operation rod 32 corresponding to the unlocking code. Therefore, the search pin 34 engaged with the movable block 33 attached to the operation rod 32 not corresponding to the unlocking code is engaged with the movable block 33 attached to the operation rod 32 corresponding to the unlocking sign. It can be said that it is located on the back side of the button lock 100 with respect to the search pin 34 to be performed.

Here, the length of the search pin 34, more specifically, the length from the tip of the search pin 34 to the locking piece 342 is the search pin 34 that does not correspond to the unlocking code (the movable block 33 is attached to the first holding position). The distal end portion of the search pin 34 corresponding to the operation rod 32 is projected from the pin insertion hole 305 provided on the back surface of the button lock 100 to the outside of the housing. The length of the search pin 34) corresponding to the operation rod 32 mounted at the second holding position is adjusted to a length that does not protrude outside from the pin insertion hole 305 provided on the back surface of the button lock 100. Yes. That is, each search pin 34 is connected to the operation rod 32.
In the former case, the distal end side of the search pin 34 protrudes to the outside of the housing through the pin insertion hole 305 depending on whether or not the operation rod 32 corresponds to the unlocking code. As described above, in the latter case, the length of the search pin 34 is determined so as not to protrude to the outside.

  According to the search pin 34 according to the present embodiment, as described above, when all the push buttons 22 are pressed by the user, only the search pin 34 that does not correspond to the unlocking code is inserted into the back of the button lock 100. The tip protrudes from the hole 305. Therefore, it is possible to determine which push button 22 corresponds to the unlocking code based on the search pin 34 protruding from the pin insertion hole 305. That is, when the user presses all the push buttons 22, the user knows that the push button 22 corresponding to the search pin 34 protruding from the pin insertion hole 305 does not correspond to the unlocking code, and the search does not protrude. It can be recognized that the push button 22 corresponding to the pin 34 corresponds to the unlock code.

  For example, in the example shown in FIG. 5, since the search pins 34 corresponding to “0”, “2”, and “7” protrude from the back surface of the button lock 100, other than “0”, “2”, and “7” It can be seen that the push buttons 22 of “1”, “3” to “6”, “8”, “9”, “*” are set as the current unlocking codes. Therefore, for example, the user slides the clear button 23 to clear all the operating rods 32, and then presses the push button 22 corresponding to the retrieved unlock code to obtain the unlock code. Can be aligned. As a result, the button lock 100 can be unlocked.

During normal use of the button lock 100, when the user operates the push button 22 in accordance with the unlocking code, any search pin 34 is inserted into the pin provided on the back of the button lock 100. It does not protrude from the hole 305. Since the button lock 100 is unlocked for the first time in a state where all the push buttons 22 corresponding to the unlock code are pressed and no push button 22 corresponding to the unlock code is pressed, the push button When the button lock 100 is unlocked by the operation 22, none of the search pins 34 protrudes from the pin insertion hole 305. Therefore, even when the user unlocks the button lock 100 from a third party, there is no possibility that the third party will search for the unlock code based on the protruding state of the search pin 34. In addition, the front-end | tip part of the search pin 34 which concerns on this embodiment may have a color which is easy to visually recognize when protruding from the pin insertion hole 305. According to this, at the time of retrieval of the unlock code, the user can more easily determine the unlock code.

<Anti-picking>
The button lock 100 according to the present embodiment has a structure for preventing unauthorized unlocking due to picking. Referring to FIG. 40, the illustrated state is that the button lock 100 is locked in an internal mechanism, and the rotation stopper 363 of the arm 36 is locked to the outer peripheral projection piece 66 of the outer cylinder 6, thereby The rotation of the cylinder 6 in the opening direction is restricted. In this state, the distal end portion of the rotation stopper 363 is in contact with the side surface of the outer peripheral projection piece 66, not the base portion (base end portion) of the outer peripheral projection piece 66. That is, a slight gap is provided between the contact portion of the rotation stopper 363 with the outer peripheral protrusion piece 66 and the proximal end portion of the outer peripheral protrusion piece 66.

  By the way, even if the conventional push button lock is in a locked state, an unauthorized person can operate the push button with the operation knob being tensioned in the opening direction, so that there is a slight touch when the push button is pressed. There is a risk that the unlock code will be illegally searched for due to the difference.

On the other hand, according to the button lock 100 according to the present embodiment, even when the operation knob 4 is forcibly rotated in the opening direction when it is in the locked state, the outer peripheral protruding piece 66 of the outer cylinder 6 is not affected. It operates to scoop up the rotation stopper 363 of the arm 36 from below (see FIG. 40).

  As a result, the arm 36 rotates around the bearing portion 361 supported by the rotary shaft 37, and the connecting portion 362 is pushed down slightly in the housing. Then, in conjunction with the operation of the connecting portion of the arm 36, the slide rod 40 also slides slightly downward, so the relationship between the projection 43 of the slide rod 40 and the recess 334 of the movable block 33 is shown in FIG. 47 to the state shown in FIG. That is, the edge of the recess 334 in the movable block 33 and the protrusion 43 of the slide rod 40 shift from a contact state to a state in which both are slightly separated.

  Therefore, even if an unauthorized person applies a tension to forcefully rotate the operation knob 4 in the opening direction, the tension is not transmitted to the operation rod 32 through the slide rod 40 and the movable block 33, but rather the slide rod. It acts in a direction to move 40 away from the operating rod 32. Therefore, even if an unauthorized person performs an unauthorized operation such as pressing the push button 22 while the operation knob 4 is tensioned in the opening direction, the push button 22 corresponding to the unlocking code and the push button 22 not corresponding to the unlock code. There is no difference in the feel when pressing and. Therefore, it is possible to suppress an unauthorized person from searching for an unlock code illegally.

  In addition, the push button lock which concerns on this embodiment can add a various change within the range which does not deviate from the summary of this invention. For example, in the push button lock according to the present embodiment, the movable block 33 is illustrated as a recessed portion 334 as the fitted portion, and the claw portion 91 of the rod return plate 9 is used as the fitting portion that can be fitted into the recessed portion 334. Although illustrated, a concave portion may be provided on the rod return plate 9 side, and a convex portion that can be fitted into the concave portion may be provided on the movable block 33 side.

<< Modification >>
Next, each modification of the button lock 100 according to the present embodiment will be described. 48 and 49 are views for explaining a first modification of the button lock 100. FIG. In the first modification, the button lock 100 includes a search pin 34A instead of the search pin 34 described above. As with the search pin 34 shown in FIG. 31, the search pin 34 </ b> A is provided with a cylindrical pin body portion 341 and a latch that is provided in the middle of the pin body portion 341 and protrudes toward the side of the pin body portion 341. It has the piece 342 and the 2nd latching piece 344 which protrudes toward the side of the pin main-body part 341 so that it may space apart only the predetermined dimension from the latching piece 342. Further, the search pin spring 343 in the search pin 34 up to the above is not attached to the search pin 34A. The second locking piece 344 in the search pin 34A is provided at a position closer to the base end side of the search pin 34A than the locking piece 342.

  The locking piece 342 and the second locking piece 344 have opposing surfaces 342a and 344a facing each other, and the movable block 33 is sandwiched between the opposing surfaces 342a and 344a as shown in FIG. It is. Specifically, the locking piece 342 in the search pin 34 </ b> A is positioned in contact with the rear end surface 33 a of the movable block 33. The search pin 34A has a separation dimension between the opposing surface 342a on the locking piece 342 side and the opposing surface 344a on the second locking piece 344 side, and the width from the front end surface 33b to the rear end surface 33a of the movable block 33. The front end surface 33b and the rear end surface 33a of the movable block 33 are sandwiched between the second locking piece 344 and the locking piece 342 in the search pin 34A. The search pin 34 </ b> A is attached to the movable block 33. Since the movable block 33 is attached to the operation rod 32 as described above, when the operation rod 32 slides in conjunction with the pushing operation of the push button 22, the search pin 34A also slides in conjunction. It has become.

  The search pin 34A in the above configuration is the same as the search pin 34 according to the above embodiment except that the second locking piece 344 is added and the search pin spring 343 is not attached to the pin body 341. This is the specification. Therefore, the length of the search pin 34A is also determined from the same viewpoint as the search pin 34 described above. That is, when the corresponding operation rod 32 is displaced from the clear position to the pushed position when the corresponding operation rod 32 corresponds to the unlocking code, the search pin 34A has a pin insertion hole at the distal end side of the search pin 34A. The length is determined so that the distal end side of the search pin 34A protrudes outside when it does not correspond to the unlocking code so as not to protrude outside the housing through 305.

  Therefore, during normal use of the button lock 100, when the user operates the push button 22 in accordance with the unlocking code, any search pin 34A is provided with a pin insertion hole provided on the back surface of the button lock 100. It does not protrude from 305. On the other hand, when the user searches for the unlocking code in the button lock 100, the user performs forced unlocking using the emergency unlocking key 14 and then presses all the push buttons 22 in the button lock 100. In this way, when all the push buttons 22 are pushed, only the search pins 34A that do not correspond to the unlocking codes are projected from the pin insertion holes 305 on the back surface of the button lock 100. As a result, whether or not the push button 22 corresponding to the search pin 34A corresponds to the unlocking code can be easily determined based on whether or not the tip of the search pin 34A protrudes from the pin insertion hole 305.

  After the search operation for the unlocking code is completed, the user slides the clear button 23 of the button lock 100, so that the rod return plate 9 slides downward together with the clear button 23. As a result, the engagement between the second recess pair 321b, 321b of the operating rod 32 and the claw portion 91 of the rod return plate 9 is released, and the operating rod 32 is cleared by the rod spring 324 on the front side of the button lock 100. Returned to position. At this time, since the second locking piece 344 of the search pin 34A comes into contact with the front end surface 33b of the movable block 33, the search pin 34A is also returned to the clear position in conjunction with the slide of the operation rod 32. In addition, when the unlocking code is searched using the search pin 34 according to the above embodiment, when the clear button 23 is slid by the user after the search operation is completed, the operation is performed as in this modification. The rod 32 is returned to the clear position. At this time, a search pin spring 343 is mounted on the pin body 341 in the search pin 34. Therefore, the search pin 34 is also returned to the clear position by the biasing force of the search pin spring 343 in conjunction with the slide of the operation rod 32.

  Next, a second modification of the button lock 100 will be described with reference to FIG. As shown in FIG. 50, the upper case 2 of the button lock 100 is provided with a spring 201 for preventing rattling. The spring 201 is generally formed into a “<” shape, and the base end portion 201 </ b> A and the intermediate portion 201 </ b> B are fixed to a fixing portion 202 provided to protrude from the upper case 2. The distal end portion 201C of the spring 201 is a free end, and the distal end portion 201C is pressed against the outer peripheral surface of the tubular body 131 (cylindrical body 131) in the indicator 13. As described above, the tip portion 201C presses the outer peripheral surface of the indicator 13 by the restoring force of the spring 201, whereby unnecessary rotation of the indicator 13, that is, rattling, can be suppressed.

  Next, a third modification of the button lock 100 will be described with reference to FIG. As shown in FIG. 51, a spacer 84 having a T-shaped cross section projects from the surface of the middle plate 8 on which the sleeve 82 projects. By providing the spacer 84 on the middle plate 8, it is possible to prevent the two members from shaking each other when the rod return plate 9 and the middle plate 8 slide relative to each other. In the present modification, the number of spacers 84 provided on the middle plate 8 is not particularly limited. For example, the spacers 84 may be provided at the four corners of the middle plate 8.

  Next, a fourth modification of the button lock 100 will be described with reference to FIG. (B) has shown the AA arrow cross section of (a). As shown in FIGS. 52A and 52B, the lower case 3 is provided with a claw portion 301, and the rod return plate 9 is held by the claw portion 301. In this modification, the claw portion 301 provided in the lower case 3 holds the rod return plate 9 so as to be slidable. Therefore, the slide operation of the rod return plate 9 is not hindered. In addition, by assembling the rod return plate 9 to the claw portion 301 of the lower case 3, the assembly work of the button lock 100 can be facilitated. Moreover, the rod return plate 9 can be stably slid by holding the rod return plate 9 slidably on the lower case 3 via the claw portion 301. Therefore, the rod return plate 9 is not shaken in the out-of-plane direction when sliding, and a stable posture can be maintained.

  Next, a fifth modification of the button lock 100 will be described with reference to FIGS. 53 and 54. As shown in FIG. 53, the button lock 100 according to this modification is screwed using a fixing screw 203 from the upper case 2 side. Further, as shown in FIG. 54, in the present modification, the fixing screw 203 is not exposed on the outer surface side of the lower case 3, so that the appearance of the button lock 100 is favorable and the structure is less susceptible to tampering. Note that the fixing screw 203 is covered with the front panel, and thus is not exposed to the outside.

  Next, a sixth modification of the button lock 100 will be described with reference to FIG. As shown in FIG. 55, in this modification, the upper case 2 is provided with a wall-shaped positioning member 204 having a rectangular plane. The positioning member 204 is a member for positioning the hook base 38. When the hook base 38 slides when the button lock 100 is used, the base portion 381 of the hook base 38 slides with respect to the positioning member 204. Thereby, when the hook base 38 slides in the housing, it is possible to suppress the posture of the base portion 381 from becoming unstable.

  Further, as shown in FIG. 55, a convex portion 308 protruding from the surface of the lower case 3 is provided at the edge of the circular opening in which the outer cylinder 6 is arranged in the lower case 3. The convex portion 308 interferes with the arm 39 with the hook at the same time or immediately after the button lock 100 is locked when the user performs the closing operation of the operation knob 4 to lock the button lock 100, and the outer cylinder The hook 393 of the arm 39 with a hook is configured to be reliably removed from the outer cylinder claw portion 67 of the sixth. More specifically, when the operation knob 4 is closed along with the locking of the button lock 100, the hook 393 of the arm 39 with the hook is locked to the outer cylinder claw portion 67 of the outer cylinder 6. Accompanying the rotation, the arm 39 with hook slides (see FIG. 34). As a result, since the hook base 38 connected to the arm 39 with the hook also slides in conjunction with it, the rod return plate 9 engaged with the hook base 38 is also slid from the initial reference position. Thereby, the holding state of the operating rod 32 by the claw portion 91 of the rod return plate 9 is released, so that the operating rod 32 is reset to the clear position, and the button lock 100 is switched from the unlocked state to the locked state. . In this modification, adjustment is performed so that the hook 393 of the arm 39 with the hook collides with the convex portion 308 at the same time or immediately after the holding state of the operating rod 32 by the claw portion 91 of the rod return plate 9 is released. Has been. For this reason, after the button lock 100 is switched from the unlocked state to the locked state, it can be avoided that the state in which the hook 393 of the arm 39 with the hook is engaged with the outer cylinder claw portion 67 of the outer cylinder 6 continues. it can.

<< Embodiment 2 >>
Next, a mechanical push button lock (hereinafter simply referred to as “button lock”) 100A according to the second embodiment will be described. 56 to 58 are views showing the appearance of the button lock 100A according to the second embodiment. FIG. 56 is a front view (front view) of the button lock 100A according to the second embodiment. FIG. 57 is a rear view (rear view) of the button lock 100A according to the second embodiment. FIG. 58 is a perspective view of the button lock 100A according to the second embodiment. FIG. 59 is a cross-sectional view of a main part of the button lock 100A according to the second embodiment. As is clear from a comparison between FIG. 1 and FIG. 56, the button lock 100 </ b> A in this embodiment is more compact than the button lock 100 according to the first embodiment. The button lock 100A of the present embodiment realizes a function equivalent to that of the button lock 100 according to the first embodiment, and realizes a size reduction of about 20% compared to the button lock 100 in the product internal volume ratio. . In the following description, the difference between the button lock 100A in the first embodiment and the button lock 100 in the first embodiment will be mainly described, and detailed description of the equivalent configuration will be omitted.

  The button lock 100A includes an upper case 2A and a lower case 3A as housings. The upper case 2A and the lower case 3A constitute a housing by being fitted together with various components constituting the button lock 100A housed therein. A front panel 21A is mounted on the outer surface of the upper case 2A, and a rear panel 30A is mounted on the outer surface of the lower case 3A.

  Also in the button lock 100A, as in the first embodiment, a cylinder lock (see FIG. 7 and the like) having the cylinder 5 and the outer cylinder 6 as main structures is housed in the housing. A plurality of push buttons 22, a clear button 23, an operation knob 4 and the like are exposed through an opening formed in the front panel 21A of the button lock 100A, and a user can operate them. During normal use, the lock / unlock operation of the button lock 100A is performed by the user pushing the push button 22 in accordance with the unlock code. Further, similarly to the first embodiment, a setting change switch 11 used when changing the setting of the unlock code of the button lock 100A is provided on the back side of the button lock 100A. Further, as in the first embodiment, the lower case 3A is formed with a pin insertion hole 305 into which the distal end side of the search pin 34 can be inserted.

  The button lock 100A also realizes the unlocking code search function using the search pin 34 described in the first embodiment, the unlocking code setting function using the setting change switch 11, the automatic locking function during the closing operation, and the like. Therefore, the slide plate 7A, the middle plate 8, the rod return plate 9A, the slide rod 40A, etc. are accommodated in the housing. The slide plate 7A, the rod return plate 9A, and the slide rod 40A are members corresponding to the slide plate 7, the rod return plate 9, and the slide rod 40 according to the first embodiment, and have the same basic structure. 60 to 62 show a slide plate 7A, a slide rod 40A, and a rod return plate 9A according to the second embodiment.

  As in the first embodiment, the slide plate 7A and the rod return plate 9A are slidably accommodated in the housing. As shown in FIG. 56, the button lock 100A has a relatively slim (elongated) outer shape, and the slide plate 7A and the rod return plate 9A are reciprocally movable along the longitudinal direction of the button lock 100A in the housing. Is provided.

The slide plate 7A is formed with a housing recess 75 similar to that of the first embodiment, and the slide rod 40A is housed in the housing recess 75. The slide plate 7A is also provided with the above-described block accommodation hole 71a and search pin insertion hole 71b. Although not shown here, at the time of assembling the button lock 100A, the movable block 33 held by the operating rod 32 is accommodated in the block accommodation hole 71a as in the first embodiment (see FIG. 31). reference). The structures and functions of the operation rod 32 and the movable block 33 are as described in the first embodiment. Also in the button lock 100A, the search pin 34 is accommodated in the housing in a state where the search pin 34 is inserted into the search pin insertion hole 71b of the slide plate 7A (see FIG. 31). Similar to the first embodiment, the search pin 34 is positioned in a state where the locking piece 342 is pressed against the rear end surface of the movable block 33 by the search pin spring 343. However, the search pin 34A according to the above-described modification may be applied. In this case, the search pin spring 343 is not attached to the pin main body 341, and the second locking piece 344 is added.

  As shown in FIG. 60, on one short side of the slide plate 7A, as in the slide plate 7 in the first embodiment, a pin-shaped spring holding portion 72 is provided so as to protrude. As shown in FIG. 59, a guide spring 73 is attached to the spring holding portion 72 of the slide plate 7A. The guide spring 73 is assembled in a contracted state between the upper case 2A and the slide plate 7A, and viewed from the front of the button lock 100A toward the right, that is, away from the cylinder 5 and the outer cylinder 6. The slide plate 7A is urged toward it. In FIG. 60, the guide spring 73 is not shown.

  As shown in FIG. 61, the slide rod 40A includes a shaft main body 41, a plurality of arm portions 42 projecting from the shaft main body 41, and each arm portion, like the slide rod 40 according to the first embodiment. 42 has a protrusion 43, a rod through hole 44, and the like. Furthermore, an arm control unit 45A is provided on one end side of the slide rod 40A. The arm control unit 45A is a component for engaging with the arm 36A and controlling the posture of the arm 36A in conjunction with the sliding operation of the slide rod 40A. 63 to 65 show detailed structures of the arm control unit 45A and the arm 36A in the slide rod 40A. The arm control portion 45A of the slide rod 40A includes a hooking portion 46 and a spring receiving portion 47 that project from the shaft main body portion 41, and a spring 48 attached to the spring receiving portion 47, respectively.

  The arm 36A is a member corresponding to the arm 36 according to the first embodiment, and includes a bearing portion 361 having a cylindrical shape and a rotation stopper 363A protruding from the bearing portion 361. Similarly to the button lock 100 according to the first embodiment, the bearing portion 361 is rotatably supported by a rotation shaft (not shown) protruding from the back surface of the upper case. The rotation stopper 363 </ b> A is curved as a whole, and the distal end of the rotation stopper 363 </ b> A engages with the outer peripheral projection piece 66 (see FIG. 16) of the outer cylinder 6. The rotation operation of the cylinder 6 can be limited. Further, as shown in the figure, the rotation stopper 363A is engaged with a first wall portion 364 formed at a position where the rotation stopper 363A engages with the spring 48 of the arm control portion 45A and a hook portion 46 of the arm control portion 45A. Two wall portions 365 are provided. As shown in FIGS. 63 and 64, the first wall 364 of the rotation stopper 363A is urged in a direction away from the slide rod 40A (arm control unit 45A) by the spring 48 of the arm control unit 45A.

  A columnar protrusion 49 protrudes from the shaft main body 41 of the slide rod 40A, and a spring 50 is attached to the protrusion 49 (see FIG. 59). The spring 50 is incorporated in a contracted state between the upper case 2A and the protruding portion 49 of the slide rod 40A, and the slide rod 40A is moved away from the cylinder 5 and the outer cylinder 6 in the same manner as the slide plate 7A. Energize.

Next, the rod return plate 9A will be described with reference to FIGS. The rod return plate 9A also has a plurality of claw portions 91, a rising portion 92, a plate main body portion 93, an inclined projection portion 94, and the like, similarly to the rod return plate 9 in the first embodiment. The functions of the claw portion 91, the rising portion 92, and the inclined protrusion 94 are the same as those in the first embodiment. When assembling the button lock 100A, as in the first embodiment, the rising portion 92 is inserted into the rod through hole 44 in the slide rod 40A, and the tip step portion 921 formed on the tip side is engaged with the clear button 23. Engage with the recess 232 (see FIG. 32). As a result, when the clear button 23 of the button lock 100A is slid, the rod return plate 9A also slides in conjunction with it.

  As shown in FIG. 66, an arm 39A with a hook is rotatably connected to the rod return plate 9A. The arm with hook 39A is a member corresponding to the arm with hook 39 in the first embodiment. As shown in FIGS. 62 and 66, the rod return plate 9A is provided with a shaft portion 99A for rotatably supporting the arm 39A with a hook so as to protrude from the surface of the plate main body portion 93. Further, in the vicinity of the shaft portion 99 </ b> A, a spring receiving portion 99 </ b> B that is pressed by a spring incorporated between the arm 39 </ b> A with a hook to be described later is erected from the plate body portion 93.

  FIG. 67 is a diagram showing a detailed structure of the arm 39A with a hook. The hooked arm 39A includes a connecting portion 391 that is rotatably supported by the shaft portion 99A of the rod return plate 9A, a hook spring 392 provided on the arm portion 394 extending from the connecting portion 391, and the arm portion 394. Has a hook 393 provided on the distal end side of the second arm portion 395 extending from the connecting portion 391 in the opposite direction. In a state where the arm 39A with the hook is connected to the rod return plate 9A, the urging force of the hook spring 392 acts in a direction to move away the arm portion 394 of the arm 39A with the hook and the spring receiving portion 99B of the rod return plate 9A. Yes. The button lock 100A employs a configuration in which the arm 39A with a hook is directly connected to the rod return plate 9A, and thus the hook base 38 described in the first embodiment is not provided.

  As shown in FIG. 59, the plate main body 93 of the rod return plate 9A is provided with a spring receiving portion 99D for receiving the spring 99C so as to protrude from the plate main body 93. The spring 99C is incorporated in a state of being sandwiched between the inner surface of the lower case 3A and the spring receiving portion 99D, and the spring 99C biases the rod return plate 9A in a direction away from the cylinder 5 and the outer cylinder 6. ing. That is, the rod return plate 9A, the slide plate 7A, and the slide rod 40A held by the slide plate 7A in the button lock 100A are always urged toward the direction away from the cylinder 5 and the outer cylinder 6 by the spring.

  Next, the operation content of the button lock 100A will be described. However, description of the operation of the members common to the button lock 100 in the first embodiment will be omitted as appropriate.

<Operation during unlocking / locking>
[Operation when unlocked]
In the button lock 100A, the push button 22, the operation rod 32, the clear button 23, the operation knob 4, the cylinder 5 and the like have common specifications. In the button lock 100A, the operation content at the time of unlocking is as described in the first embodiment. That is, when the push button 22 is pushed according to the unlock code, only the operation rod 32 corresponding to the unlock code is pushed from the clear position to the pushed position. As a result, the position of the protrusion 43 of the slide rod 40A exactly matches the recess 334 (see FIG. 29) of the movable block 33 attached to each operation rod 32. Here, since the slide rod 40A is biased by the spring 50 (see FIG. 59), the projection 43 of the slide rod 40A is fitted into the recess 334 of the movable block 33 by the biasing force of the spring 50, and the slide The rod 40A slides in the direction away from the outer cylinder 6 (indicated by the symbol X in FIG. 59). At that time, as shown in FIG. 59, FIG. 63, and FIG. 68, the slide rod 40A slides in the X direction in a state in which the hook portion 46 of the slide rod 40A is engaged with the second wall portion 365 of the arm 36A. The rotation stopper 363A is pulled away from the outer cylinder 6 against the urging force of the spring 48. As a result, as shown in FIG. 68, the locked state of the outer peripheral projection piece 66 of the outer cylinder 6 by the rotation stopper 363A is released. As a result, the restriction on performing the opening operation of the operation knob 4 is released, so that the button lock 100A is unlocked in an internal mechanism. Then, when the user opens the operation knob 4, the stopper 10 changes the posture from the locking position to the disengagement position. As a result, the stopper 10 is detached from the counterpart member of the object to be locked, and the button lock 100A is unlocked also in an external mechanism.

[Operation when locking]
Next, regarding the locking of the button lock 100 </ b> A, as with the button lock 100 according to the first embodiment, the operation knob 4 is closed and automatically locked. When the operation knob 4 is closed with respect to the button lock 100A in the unlocked state, the cylinder 5 and the outer cylinder 6 rotate together with the operation knob 4 in the closing direction. At this time, as shown in FIG. 69, the hooked arm 39A is pulled according to the rotation of the outer cylinder 6 in a state where the hook 393 of the arm 39A with the hook is engaged with the outer cylinder claw portion 67 of the outer cylinder 6. It is done. For this reason, the rod return plate 9A connected to the arm 39A with the hook slides in the Y direction described above. As a result, as in the case of the button lock 100 according to the first embodiment, the operation rod 32 is unlocked by the claw portion 91 of the rod return plate 9 and the operation rod 32 is returned to the clear position. Then, all the operating rods 32 are in the clear position, and the position of the concave portion 334 of the movable block 33 and the position of the protrusion 43 of the slide rod 40A are shifted from each other with respect to the operating rod 32 corresponding to the unlocking code. (See FIG. 38), the slide rod 40A slides in the direction approaching the outer cylinder 6 from the initial reference position (Y direction in FIG. 59). When the slide rod 40A approaches the outer cylinder 6, the rotation stopper 363A of the arm 36 is further pressed via the spring 48. As a result, the arm 36 rotates and the rotation stopper 363 </ b> A is locked to the outer peripheral projection piece 66 of the outer cylinder 6. As a result, the opening operation of the operation knob 4 is restricted, and the button lock 100A is locked in an internal mechanism.

  As described above, when the button lock 100A is automatically locked by closing the operation knob 4 from the state where the button lock 100A is unlocked internally and externally, the operation rod 32 by the claw portion 91 of the rod return plate 9 is used. The hook 393 is detached from the outer cylinder claw portion 67 at the same time when the lock is released or at a slightly later timing. As a result, the rod return plate 9 is biased by the spring 99C to return to the initial reference position, and the holding state of each operation rod 32 by the claw portion 9 becomes the rod first holding state. Therefore, from this state, the user can unlock the button lock 100A as described above by pressing the push button 22 in accordance with the unlock code.

[Set unlock code]
Next, an unlocking code setting method in the button lock 100A will be described. The setting change switch 11 can be switched from the fixed position 302 to the reset position 303 or the setting position 304 only when the button lock 100A is unlocked internally. When setting the unlock code, the setting change switch 11 on the back of the button lock 100A is rotated from the fixed position 302 to the reset position 303. As a result, when the position of the setting change switch 11 reaches the setting position 304 from the fixed position 302, the fan-shaped portion 111 of the setting change switch 11 presses the edge of the square hole portion 74 of the slide plate 7A. 7A and the slide rod 40A held thereon slide in the Y direction shown in FIG. 59 from the initial reference position. As a result, the movable block 33 is detached from the operation rod 32.

Since the button lock 100A is currently in the unlocked state, the operating rod 32 corresponding to the unlocking code is in the second rod holding state, and the operating rod 32 not corresponding to the unlocking code is in the first rod holding state. This point is as described in the first embodiment. Next, when the setting change switch 11 of the button lock 100A is set to the reset position 303, the pin 115 of the setting change switch 11 is connected to the pin receiving portion 97 of the rod return plate 9A as in the first embodiment.
(See FIGS. 43 and 44), and the rod return plate 9A is slid in the Y direction shown in FIG. As a result, the claw portion 91 of the rod return plate 9A is detached from the concave portion of the operation rod 32 in the rod second holding state, and all the operation rods 32 are cleared.

  Next, the setting change switch 11 is returned from the reset position 303 to the setting position 304. By this operation, since the engagement state between the pin 115 in the setting change switch 11 and the pin receiving portion 97 in the rod return plate 9 is released, the rod return plate 9A moves away from the outer cylinder 6 by the biasing force of the spring 99C. Slide in (X direction in FIG. 59) and return to the initial reference position. As a result, all the operating rods 32 are engaged with the claw portions 91 of the rod return plate 9A in the first concave pair 321a and 321a, thereby entering the rod first holding state. From this state, when the push button 22 corresponding to the new unlocking code is pushed by the user, only the operation rod 32 corresponding to the new unlocking code is held in the first rod as in the first embodiment. The state is switched to the rod second holding state.

  Next, when the setting change switch 11 is switched from the setting position 304 to the fixed position 302, the pressing state of the slide plate 7A by the fan-shaped portion 111 of the setting change switch 11 is released. The plate 7A and the slide rod 40A are integrated and slide in a direction away from the outer cylinder 6 (X direction in FIG. 59), and these are returned to the initial reference position. As a result, as in the case of the first embodiment, the movable block 33 is mounted on the operation rod 32, and the protrusion 43 of the slide rod 40A is positioned at the first holding position of each operation rod 32 (the operation rod 32 is It is fitted into the recess 334 of the movable block 33 mounted at the second holding position (when the unlocking code does not correspond) or when the operation rod 32 corresponds to the unlocking code. Thereby, the setting change of the unlocking code related to the button lock 100A is completed.

<Search unlock code>
Next, a method for searching for an unlock code in the button lock 100A will be described. The button lock 100A includes a search pin 34 in the housing in the same manner as the button lock 100 according to the first embodiment. When all the push buttons 22 are pressed after the button lock 100A is emergency unlocked, the distal end side of the search pin 34 that does not correspond to the unlock code protrudes outside from the pin insertion hole 305 of the button lock 100A. The distal end of the search pin 34 corresponding to the reference numeral is maintained in a state of being immersed in the housing. In other words, whether the distal end side of the search pin 34 is exposed to the outside through the pin insertion hole 305 when the push button 22 is pushed depending on whether or not the search pin 34 corresponds to the unlocking code. The length of the search pin 34 has been adjusted so as to give different results.

  Therefore, when the user presses all the push buttons 22 after emergency unlocking, the push button 22 corresponding to the search pin 34 whose tip protrudes from the pin insertion hole 305 is set to the currently set unlock code. Can understand that it does not apply. Therefore, the push button 22 corresponding to the search pin 34 whose tip does not protrude from the pin insertion hole 305 corresponds to the unlock code, and the unlock code of the button lock 100A can be easily searched. Moreover, in the state where the button 100A is unlocked during normal operation and the door is opened, any search pin 34 is immersed in the housing. There is no possibility that the unlocking code is grasped.

Here, the stopper 10 of the button lock 100A shown in FIGS. 56 to 58 is a so-called cam type like the stopper 10 of the button lock 100 according to the first embodiment, and is released by rotating the posture of the stopper 10. It is a method of switching between the position and the locking position. Below, the button lock 100B which employ | adopts the stopper 10A of a slide system as a modification of the button lock which concerns on this embodiment is demonstrated. FIG. 70 is a front view (front view) of a button lock 100B according to a modification of the second embodiment. FIG. 71 is a rear view (rear view) of a button lock 100B according to a modification of the second embodiment. FIG. 72 is a view partially showing the back surface of the button lock 100B according to the modification of the second embodiment with the rear panel 30A removed. FIG. 73 is a partial cross-sectional view of a button lock 100B according to a modification of the second embodiment. FIG. 74 is a view showing the rear panel 30A of the button lock 100B according to a modification of the second embodiment. (A) shows a plan view of the rear panel 30A, and (b) shows a side view of the rear panel 30A.

  In the button lock 100B according to this modification, the drive shaft 12A connected to the rear end of the cylinder 5 has a second shaft portion 123 as a shaft portion in addition to the shaft portion 121 projecting at the center of the transverse section at the rear end portion. It protrudes from the rear end portion of the drive shaft 12A at a position eccentric to 121 (see FIG. 72). Further, the stopper 10 </ b> A in this modification has an elongated long hole 101 </ b> A formed instead of the attachment hole 101 and a U-shaped notch 102. The shaft portion 121 of the drive shaft 12A is inserted through the elongated hole 101A of the stopper 10A, and the second shaft portion 123 of the drive shaft 12A is inserted through the notch 102 of the stopper 10A (see FIG. 72). The tip of the shaft 121 in the drive shaft 12A is loosely fitted in a recess 307 (see FIG. 73) formed in the rear panel 30A.

  Next, the sliding operation of the stopper 10A when the operation knob 4 is rotated when the button lock 100B is in the unlocked state will be described. For example, when the operation knob 4 is opened while the button lock 100B is in the unlocked state, the drive shaft 12 rotates in the clockwise direction in FIG. At that time, the edge portion of the notch 102 in the stopper 10A is pushed by the side surface of the second shaft portion 123 in the drive shaft 12A, so that the shaft portion 121 of the drive shaft 12A moves along the long hole 101A of the stopper 10A. . Accordingly, the stopper 10A slides in a direction in which the stopper 10A is pulled into the housing of the button lock 100B. And the stopper 10A latched by the other party member of the locking target object can be removed by pulling the stopper 10A to the predetermined release position. On the other hand, when the operation knob 4 is closed, the stopper 10A slides from the housing of the button lock 100B in the direction opposite to the opening operation. Then, the stopper 10A protrudes to a predetermined locking position, whereby the stopper 10A that has been detached from the counterpart member of the locking object is locked to the counterpart member. Thus, according to this modification, the locking position and the disengagement position can be freely switched by sliding the stopper 10A.

  As mentioned above, although embodiment and modification of the button lock concerning the present invention were explained, it is obvious for those skilled in the art that various changes, improvement, combination, etc. are possible about these.

2 ... Upper case 3 ... Lower case 4 ... Operation knob 5 ... Cylinder 6 ... Outer cylinder 7 ... Slide plate 8 ... Middle plate 9 ... Rod return plate 10 ... Stopper 11 ... Setting change switch 22 ... Push button 32 ... Operation rod 33 ... Movable block 34 ... Search pin 40 ... Slide rod 100 ... Button lock

Claims (4)

A housing in which a plurality of push buttons are attached so as to be able to appear and disappear on one side;
An operation knob that is attached to the housing and can change the posture of a stopper that can be engaged and disengaged with the mating member of the locked object.
The push button is slidable in the protruding and retracting direction of the push button, and is provided in the housing corresponding to each of the push buttons. An operating rod that displaces
A restricting means capable of restricting the operation of the operation knob and releasing the restriction of the operation of the operation knob when only the operation rod corresponding to the unlocking code is in the pushed position;
A plurality of search pins attached to each of the operating rods and extending along the axial direction of the operating rod;
A pin projecting hole formed on the other surface of the housing and capable of projecting to the outside by inserting the distal end side of the search pin;
With
When the operation rod is displaced from the clear position to the push position by the push operation of the push button, depending on whether the operation rod displaced to the push position corresponds to the unlocking code or not. , It is determined whether or not the front end side of the corresponding search pin protrudes outside the housing through the pin protrusion hole.
Push button lock. When the operation rod is displaced from the clear position to the push-in position, only the search pin attached to the operation rod that does not correspond to the unlocking code protrudes to the outside through the pin protrusion hole. Yes,
The push button lock according to claim 1. Attached to each of the operation rods, it is possible to selectively replace a predetermined first holding position in the axial direction of the operation rod and a second holding position closer to the push button than the first holding position. A replacement member,
The regulating means includes an operation rod in which all of the operation rods in which the replacement member is mounted in the first holding position are in the clear position, and the replacement member is mounted in the second holding position. When all of the above are in the push-in position, the restriction of the operation knob operation is released,
The search pin is attached to the operation rod via the replacement member,
When the operating rod with the replacement member mounted at the first holding position is displaced to the push-in position, the distal end side of the corresponding search pin protrudes outside through the pin protruding hole, and the replacement member is the second When the operating rod attached to the holding position is displaced to the pushing position, the tip end side of the corresponding search pin is configured not to protrude outside through the pin protruding hole.
The push button lock according to claim 2. Each of the replacement members is formed with a fitted portion including a concave portion or a convex portion,
The restricting means has a fitting portion that can be fitted to the fitted portion of the replacement member, and
When all the fitting parts are fitted to the fitted parts, the restriction of the operation knob operation is released,
At least one of the operation rods with the replacement member mounted at the first holding position is at the push-in position, or at least one of the operation members with the replacement member mounted at the second holding position. When the rod is in the clear position, the operation of the operation knob is regulated by releasing the fitted state between the fitted portion and the fitted portion.
The push button lock according to claim 3.

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