JP4516877B2 - Key conversion type lock - Google Patents

Description

  The present invention relates to a key conversion type lock that is used in a locking device for a game machine such as a slot machine or a pachinko machine and can change an unlock key by changing a key code.

  Conventionally, as a locking device of a pachinko machine, a connecting rod is slidably arranged inside the base frame body, and a hook member is connected to the connecting rod and can be tilted at the upper and lower portions of the support plate of the base frame body. A cam plate that is pivotally supported and fixed to an intermediate portion of the mounting plate of the base frame body so that the cylinder lock is inserted inward from a hole provided in the mounting plate, and engages with a connecting rod at the tip of the locking shaft. A locking device having a configuration to which is attached is known from Patent Document 1 below.

  This type of locking device is attached to the inside of the front frame, and a receiving metal fitting to which the hook member is locked is attached at a corresponding position in the main body frame. In the locked state, when the unlocking key is inserted into the cylinder lock and turned, the cam plate attached to the lock shaft is moved, and the cam plate engages with the connecting rod during the rotation to move it upward or downward. The upper and lower eaves members are tilted by the movement of the connecting eaves and disengaged from the metal fittings provided on the main body frame side, and unlocked.

  By the way, this type of locking device for a pachinko machine is often equipped with a key-converting lock that can convert an unlocking key as a cylinder lock. It is formed in the same shape as a normal cylinder lock having a size, and an operation knob for a reset pin for operation at the time of key conversion operation is provided on the back side of the key conversion type lock.

  The key conversion type lock generally includes a cylindrical outer cylinder having the same size as that of a normal cylinder lock, an inner cylinder rotatably fitted inside the outer cylinder, and an inner cylinder of the inner cylinder. An output shaft attached to the tip so as to be engageable, and the inner cylinder and the outer cylinder each have a plurality of through holes perpendicular to the axial direction, and the inner cylinder through hole and the outer cylinder through hole are Each is drilled at a communicable position. A reset through hole is formed between the inner cylinder and the output shaft, and a reset pin is inserted into the reset through hole so as to be movable by an operation knob to engage the output shaft and the inner cylinder. In addition, a drive pin, a cord setting spacer, and a base pin are urged inward by a coil spring and inserted into the plurality of through holes of the inner cylinder and the outer cylinder, respectively.

When converting the key, the current unlocking key is inserted into the keyhole, and the key is turned 180 degrees while the reset operation knob is pressed, and the key is removed from the keyhole. Next, a new key is inserted into the keyhole, and the key is rotated 180 degrees so as to return to the original position. By this operation, the number of code setting spacers located in the through holes of the inner cylinder and the outer cylinder is changed from the previous code, and the key code for unlocking the lock is changed to a code for a new key. The unlock key of the lock is converted to a new key. Such a key conversion type lock is described in Patent Document 2 below.
Japanese Utility Model Publication No. 60-2585 JP 2001-32583 A

  By the way, the above-mentioned key conversion type lock is mass-produced with the same size and shape as a general cylinder lock. In recent pachinko machines and slot machines, the thickness of the front frame or the front door to which the locking device is attached. However, it tends to be formed thicker than the conventional one so as to have a high decorative function.

  For this reason, in the case of a key conversion type lock having the same size as a conventional general-purpose cylinder lock, the length of the key conversion type lock is the length of the door when attached directly to the front side of the mounting plate of the base frame of the locking device. Since it is shorter than the thickness, when the locking device is mounted inside the front frame or the front door, the position of the keyhole does not appear on the surface of the front frame (front door). Therefore, a structure in which the cover and the connecting shaft are assembled to the lock so as to increase the length from the keyhole surface of the key conversion type lock to the tip of the lock shaft has been studied.

  However, as described above, the key conversion type lock has an operation knob for a reset pin that is operated when performing the key conversion operation on the back surface of the lock, so that it has substantially the same shape as a general-purpose cylinder lock. If the cover and connecting shaft are simply assembled on the back side of the key conversion type lock, the operation knob is hidden by the cover, and it is difficult to operate the operation knob for the reset pin during the key conversion operation. It was.

  The present invention has been made in view of the above points, and can be used by increasing the length from the keyhole surface to the lock shaft of an existing conversion-type lock, and can easily perform a key conversion operation. The object is to provide a convertible lock.

In order to achieve the above object, a key conversion type lock according to claim 1 of the present invention includes an outer cylinder having a flange portion at the end thereof, an inner cylinder rotatably fitted inside the outer cylinder, A key conversion in which a conversion lock body comprising a lock shaft disposed inside the outer cylinder so as to be engageable with the inner cylinder in the vicinity of the end of the inner cylinder is attached to the tip of the extension block. A lock,
A plurality of through holes are formed in the inner cylinder and the outer cylinder of the conversion type lock main body at right angles to the axial direction, and the through holes of the inner cylinder and the outer cylinder are respectively drilled at corresponding positions where they can communicate with each other, A reset through hole is formed between the inner cylinder and the lock shaft, and a reset pin is inserted into the reset through hole to engage the lock shaft and the inner cylinder, and the reset pin is released from engagement. An operation knob is movably provided on the rear surface of the flange portion of the convertible lock body, and a drive pin, a cord setting spacer, and a base pin are urged by a coil spring in the plurality of through holes of the inner cylinder and the outer cylinder, respectively. Inserted,
The extended block is fixed to the rear surface of the flange portion of the conversion equation lock body,
A mounting flange having a mounting hole is provided at the end of the extended block,
A shaft recess is formed in the extended block, and an operation shaft recess is formed adjacent to the shaft recess,
The connecting shaft is rotatably held by inserting the connecting shaft into the shaft recess, and fitting the fitting holding member into the shaft recess from above the connecting shaft.
The operation shaft is rotatably held by inserting the operation shaft into the operation shaft recess, and fitting the fitting holding member into the operation shaft recess from above the operation shaft.
A small diameter portion is provided at the end of the connecting shaft and the operating shaft,
Inner flange portions corresponding to the small diameter portions are provided at the end portions of the shaft recesses and the operation shaft recesses of the extended block,
When the connecting shaft is inserted into the shaft recess and the operation shaft is inserted into the operation shaft recess, the small diameter portions of the connection shaft and the operation shaft are fitted into the inner flange portion, The connecting shaft and the operation shaft are held in the shaft recess or the operation shaft recess in a state in which the connection shaft and the operation shaft are rotatable and restrained in the axial direction.
The end of the connecting shaft is connected to the end of the lock shaft of the convertible lock body,
The tip of the operating shaft provided with a knob at the end is adapted to be able to move the operating knob by engaging the operating knob when the operating shaft is rotated.
The operation knob is moved by the rotation operation of the operation shaft, and reset for key conversion is performed.

Here, as in claim 2, an engagement knob that can engage the tip of the driver is formed at the end of the operation shaft, and the engagement knob is exposed or protruded from the end surface of the extended block. it can.

The key-converting lock having the above configuration is used by being attached to the base frame of a locking device that locks the front frame of the pachinko machine or the front door of the slot machine via the mounting flange at the end of the extension block. For example, if the mounting flange at the end of the extended block is fixed in the opening provided in the mounting plate of the base frame body, the knob portion at the end of the operating shaft is arranged in a state of protruding to the inside of the base frame body. Can be set. A cam plate is fixed to the end of the connecting shaft protruding from the end of the extended block of the key conversion type lock, and the cam plate can be engaged with a connecting rod in the base frame when the lock shaft and the connecting shaft are rotated. is there.

  The key-converting lock is fixed to the base frame of the locking device via an extending block attached to the end of the convertible lock body, and the keyhole at the tip of the convertible lock body is projected forward. For this reason, even if the thickness of the front frame or front door of the pachinko machine or slot machine to which the base frame of the locking device is attached is thick, the keyhole surface at the tip of the convertible lock body is the front frame or front door. The key can be exposed to the front and exposed, and an unlocking key can be inserted into the keyhole for a good unlocking operation. In addition, a mass-produced general-purpose key conversion type lock can be used for the conversion type lock that is the main part of the lock, so the long length from the keyhole to the tip of the lock shaft (connection shaft) is long. A key-converting lock having a shape can be manufactured at low cost.

When converting unlocking key of the key conversion equation tablet, insert the unlocking key of the current into the keyhole and holds the hysterectomy viewed portion of the end of the operating shaft projecting from the end of the extended block turning the operating shaft, The reset operation knob that engages the tip of the operation shaft moves to the reset position, and in that state, the key is rotated by a predetermined angle, a new key is inserted in place of the key, and the control knob is rotated to return the predetermined angle. By moving, it is converted to a new key. Therefore, the unlocking key can be easily converted by moving the operation knob to the reset position by holding the knob of the operation shaft of the extended block and rotating it.

In addition, a small-diameter portion is provided at the end of the connecting shaft and the operating shaft, and an inner flange portion corresponding to the small-diameter portion is provided at the end of the extending block shaft recess and the operating shaft recessed portion. When inserted into the recess and the operating shaft is inserted into the operating shaft recess, the small diameter portions of the connecting shaft and the operating shaft are fitted into the inner flange portion, so that the connecting shaft and the operating shaft can be rotated in the axial direction. Since it is held in a constrained state in the shaft recess or the operation shaft recess, during assembly during manufacture, the connecting shaft and the operation shaft are inserted into the shaft recess and the operation shaft recess of the extension block, From above, the connecting shaft and the operating shaft can be pivoted to an appropriate position in the extended block with a simple operation by simply fitting the fitting holding member into the shaft concave portion and the operating shaft concave portion. The number of parts can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a perspective view of a key conversion type lock, and FIG. 2 shows a left side view thereof. 3 is a front view thereof, FIG. 4 is a rear view thereof, and FIGS. 5 and 6 are exploded perspective views thereof. This key-converting lock 1 is basically a key-converting lock with a conversion-lock body 2 that can change the unlocking key by changing the key code attached to the tip, and the flange of the conversion-lock body 2 The extended block 10 is fixed to the lower part of the portion 7, and the connecting shaft 15 is connected to the end of the lock shaft 5 of the convertible lock body 2 in the extended block 10 so as to be rotatable. The operation shaft 18 is fitted into the operation knob 6 of the convertible lock body 2 so as to be engageable and rotatable, and the operation knob 6 is moved by the rotation of the operation shaft 18.

  The conversion-type lock body 2 includes a cylindrical outer cylinder 3 having the same size as a general-purpose cylinder lock, an inner cylinder 4 that is rotatably fitted inside the outer cylinder 3, and an inner cylinder 4. A lock shaft 5 disposed in the outer cylinder so as to be engageable with the tip is configured. The inner cylinder 4 and the outer cylinder 3 are not shown in the figure, but a plurality of through holes each have a shaft. At right angles to the direction, the through hole of the inner cylinder 4 and the through hole of the outer cylinder 3 are formed at positions where they can communicate with each other.

  Further, the outer cylinder 3 is provided with a spacer supply through hole for supplying a code setting spacer. The spacer supply through hole is provided at an angular position of 180 degrees with respect to the through hole. A drive pin, a cord setting spacer, and a base pin are urged inward by a coil spring into the through holes of the inner cylinder 4 and the outer cylinder 3, respectively, and the drive pins and cords are inserted into the spacer supply through holes. A setting spacer is inserted together with the coil spring.

  Further, a reset hole is formed between the inner cylinder 4 and the lock shaft 5, and a reset pin is moved by the operation knob 6 (FIG. 7) to engage the lock shaft 5 and the inner cylinder 4 in the reset hole. Inserted as possible. As shown in FIG. 7, the operation knob 6 protrudes from a cover plate 8 attached so as to cover the back surface of the flange portion 7 of the convertible lock body 2, and is disposed so as to be movable inward (the lock shaft 5 side). ing. Holes for insertion of fixing screws 9 are formed in both end portions of the flange portion 7.

  That is, when the reset pin is inserted into the reset hole formed between the inner cylinder 4 and the lock shaft 5 together with the coil spring, and the reset pin is pushed against the biasing force of the coil spring by the operation knob 6. The end face of the reset pin is coincident with the boundary line between the inner cylinder 4 and the lock shaft 5, and in this state, only the inner cylinder 4 is separated (by separating the lock shaft 5) by turning the unlocking key inserted into the inner cylinder 4. It can be rotated. When the operation knob 6 is not operated, the reset pin is positioned across the boundary line between the inner cylinder 4 and the lock shaft 5, and the inner cylinder 4 and the lock shaft 5 are connected by the reset pin and rotate together.

  When converting the unlocking key, the current unlocking key is inserted into the keyhole of the convertible lock body 2, and the reset operation knob 6 is pushed to the reset position, that is, inward and moved, and then the key 180 is moved. Rotate it. At this time, only the inner cylinder 4 is rotated 180 degrees, the through hole in the inner cylinder 4 is in communication with the spacer supply through hole in the outer cylinder 3, and the code setting spacer of each through hole is in the inner cylinder. Collect in the through hole and the spacer supply through hole. Then, when the current unlocking key is pulled out and a new key is inserted into the key hole, the cord setting spacer changes from the spacer supply through hole to the through hole of the inner cylinder 4 according to the depth of the groove of the new key. The key code is changed to a code corresponding to the new key. In this state, if the key is rotated 180 degrees so as to return to the original position, the reset pin returns to the position where the inner cylinder 4 and the lock shaft 5 are connected, and the inner cylinder 4 and the lock shaft 5 rotate integrally. The unlock key is converted into a new key.

  The extension block 10 is fixed to the back surface (bottom surface) of the flange portion 7 in the conversion type lock body 2 having the above configuration by the fixing screw 9. As shown in FIGS. 5 and 6, the extended block 10 has mounting surfaces having the same shape as the planar shape of the flange portion 7, and holes on the flange portion 7 are formed at both ends of the front mounting surface. A fixing screw hole 13 is formed at a position corresponding to 7a. The extension block 10 has a mounting surface at the tip thereof in close contact with the back surface of the flange portion 7 and is fixed by tightening a fixing screw 9 into a screw hole. An attachment flange 14 having an attachment hole is provided at the end portion of the extension block 10 in order to fix the extension block 10 to a base frame 31 of a locking device described later.

  A shaft recess 11 is formed in the approximate center of the extension block 10 along the longitudinal direction, and the shaft recess 11 is connected to the inside of the extension block 10 to be connected to the end of the lock shaft 5 of the conversion lock body 2. It is formed in order to insert the shaft 15 so as to be rotatable. Further, the extension block 10 is formed with an operation shaft recess 12 adjacent to the shaft recess 11 so that the operation shaft 18 engaged with the operation knob 6 is rotatably fitted. In other words, the operation shaft recess 12 is formed such that the tip of the operation shaft 18 inserted therein is positioned at a corresponding position that engages with the operation knob 6 on the rear surface of the flange portion of the convertible lock body 2.

  When the connecting shaft 15 and the operating shaft 18 are inserted into the concave portion 11 and the operating shaft concave portion 12, an opening is formed in the upper portion thereof, and the fitting holding members 20 and 21 are closed. Is inserted. The fitting holding members 20 and 21 are fitted and fixed in the openings so as to rotatably hold the connecting shaft 15 in the shaft recess 11 and the operation shaft 18 in the operation shaft recess 12. The extending block 10 and the fitting holding members 20 and 21 are formed of synthetic resin or metal, and the fitting holding members 20 and 21 are fitted to the concave portions of the extending block 10 by fitting the concave portions and the convex portions, or Is fixed by fitting the check piece and the locking portion, but can also be fixed by adhesive or welding or by screwing.

  As shown in FIG. 5, the connecting shaft 15 has a fitting recess 15a for fitting the tip of the lock shaft 5 at its tip, and a shaft end 15b protruding from the end. The connecting shaft 15 is connected to the lock shaft 5 through the fitting recess 15a, and the rotation of the lock shaft 5 is transmitted to the connecting shaft 15 as it is.

  As shown in FIGS. 5 and 8, the operation shaft 18 is formed with an engagement recess 18a for accommodating the operation knob 6 at the tip thereof, cut out in a fan shape of about 90 degrees, and a knob at the end thereof. 18b is formed. In a state where the extended block 10 is fixed to the back surface of the flange portion 7 of the convertible lock body 2, the operation knob 6 enters the engagement recess 18 a at the tip of the operation shaft 18. As shown in FIG. 8, when the operating shaft 18 is rotated counterclockwise, the operating knob 6 is pushed by the wall surface of the engaging recess 18a and moves inward. A spring member 19 is mounted between the operation shaft 18 and the extended block 10 and urges the operation shaft 18 to rotate clockwise in FIG.

  The connecting shaft 15 and the operating shaft 18 are provided with small diameter portions at the tips and ends of the connecting shaft 15 via a step, and the inner ends corresponding to the tips and the ends of the shaft recess 11 and the operating shaft recess 12 of the extension block 10 are provided. A flange portion is provided, and the small diameter portions of the connecting shaft 15 and the operating shaft 18 are fitted into the inner flange portions of the shaft recessed portion 11 and the operating shaft recessed portion 12, whereby the connecting shaft 15 and the operating shaft 18 are rotatable. And it is held in a state constrained in the axial direction.

  The key conversion type lock 1 configured as described above is attached to a mounting plate 32 in a base frame 31 of a locking device of a slot machine, for example, as shown in FIGS.

  As shown in FIGS. 9 to 12, the locking device has a vertically long base frame body 31 formed by pressing a metal plate, and the base frame body 31 includes a mounting plate 32 bent into a substantially L-shaped cross section. The support plate 33 is provided, and the end of the mounting plate 32 on the side opposite to the support plate is bent outward along the longitudinal direction with a short width, and the mounting plate 32 has a plurality of holes for mounting the key conversion lock 1 and a plurality of holes. The fixing hole is drilled.

  Wide portions are formed in the vicinity of the upper and lower portions of the support plate 33 bent at a substantially right angle with respect to the mounting plate 32, and the flange members 35, 36 are pivotally supported by the pivots 37, 38 at the portions. . The eaves members 35 and 36 are formed in a hook shape having tip portions thereof having inclined surfaces.

  As shown in FIG. 12, the upper and lower flange members 35 and 36 are stationary in a state of projecting in a substantially horizontal lateral direction with respect to the support plate 33 in a vertical posture. The support plate 33 is provided in a state where a part of the support plate 33 is cut and raised inward at a position where it can contact the lower side of the base portion of the upper flange member 35. Accordingly, the base portions of the flange members 35 and 36 are urged downward via the connecting rod 34 so that the base portions thereof are in contact with the contact support portion 33a in a state of projecting substantially horizontally. Quiesce.

  And the eaves members 35 and 36 are pivotally supported by the pivots 36 and 37 so that they can tilt downward from such a horizontal posture. A band-shaped connecting rod 34 is slidably disposed along the inner side of the support plate 33 of the base frame 31, and the connecting rod 34 is connected to the end portions of the upper and lower flange members 35, 36 via connecting shafts 39, 40. The upper and lower ends are connected. Therefore, when the connecting rod 34 slides upward, the flange members 35 and 36 tilt to the lower unlocking position. A coil spring 47 for urging the connecting rod 34 downward (locking direction) is mounted between the connecting rod 34 and a switch operating rod 45 described later.

  As shown in FIG. 11, a contact portion 33 b is provided in the wide portion of the support plate 33 that pivotally supports the flange members 35, 36 at a rear position corresponding to the locking recess of the hook-shaped flange members 35, 36. It has been. When the front frame 51 is closed with respect to the main body frame 50 and the flange members 35 and 36 are locked to the plate-shaped locking portions 54 and 55 of the receiving bracket 53 on the main body frame side, When the plate-like locking portions 54 and 55 can be brought into contact with the portion 33b, and when the front frame 51 is lifted upward by an unauthorized act, the flange members 35 and 36 are tilted downward to be illegally unlocked. Is preventing.

  A part of the mounting plate 32 is cut and raised inward so that a chevron-shaped guide support portion 32 a guides the connecting rod 34 near the upper portion, the middle portion, and the lower portion of the mounting plate 32. The connecting rod 34 is disposed between the guide support portion 32a and the support plate 33, and is guided by the guide support portion 32a and the support plate 33 so as to be slidable up and down. Further, as shown in FIG. 12, a long hole 34 b is formed in a part of the connecting rod 34, a guide pin 42 is inserted into the long hole 34 b and fixed to the support plate 33, and the connecting rod 34 is fixed by the guide pin 42. Guided slidably in the longitudinal direction. Further, an engaging portion 34 c that can be engaged with the engaging convex portion of the cam plate 16 is formed at the intermediate portion of the connecting rod 34.

  Furthermore, a wide part for attaching the key conversion type lock 1 is formed in the intermediate part of the mounting plate 32, and a deformed hole is formed in the wide part, and the key conversion type lock 1 is inserted into the hole from the back side. The flange portion 7 is screwed to the inside of the mounting plate 32, and the key conversion type lock 1 is mounted on the mounting plate 32 so as to protrude. Furthermore, as shown in FIGS. 11 and 12, a switch operating rod 45 is slidably disposed between the support plate 33 and the connecting rod 34. The switch operating rod 45 is configured to engage the cam plate 16 and slide downward when the cam plate 16 is turned counterclockwise by the key conversion type lock 1, and to turn the operation switch 49 on and off. The A coil spring 47 is hung between the connecting rod 34 and the switch operating rod 45. The spring force of the coil spring 47 biases the connecting rod 34 downward, and the switch operating rod 45 is biased upward.

  A cam plate 16 is fixed to the tip of the shaft end portion 15 b of the connecting shaft 15 of the key conversion type lock 1. As shown in FIG. 11, the cam plate 16 is provided with two engaging convex portions, and the corresponding portion of the connecting rod 34 is provided with an engaging portion 34 c that can be engaged with one engaging convex portion. The switch operating rod 45 is provided with an engagement recess that can be engaged with the other engagement projection. The cam plate 16 engages with the connecting rod 34 when the key of the key conversion type lock 1 is turned to the right and moves the connecting rod 34 upward, and the cam plate 16 switches the switch operating rod when the key is turned counterclockwise. 45 is engaged and slid downward.

  As shown in FIG. 11, a non-contact type operation switch 49 such as a transmission type photoelectric switch or a proximity switch is mounted on the mounting plate 32 at a position facing the lower end of the switch operating rod 45, and a key conversion type lock is provided. When 1 is turned to the left and the switch operating rod 45 moves downward, its end is detected and a signal such as a reset signal is output.

  A synthetic resin roller 48 is rotatably supported on the wide portion below the support plate 33. The roller 48 supports the front frame 51 by rolling on a roller receiver 57 provided on the receiving metal 53 when the front frame 51 is closed. Further, as shown in FIG. 12, the side edge portion of the mounting plate 32 opposite to the support plate 33 is bent at a right angle to form a side wall 32b, thereby reinforcing the base frame body 31, A wire or the like is prevented from entering the cam plate 16 or its engaging portion.

  As shown in FIG. 13, the locking device configured in this way is mounted with a mounting plate 32 of the base frame 31 fixed vertically inside a front frame (front door) 51 of a game machine such as a slot machine, A receiving bracket 53 is attached to a corresponding position on the main body frame 50 side of the game machine.

  As shown in FIG. 13, the receiving metal 53 is formed by projecting plate-like locking portions 54 and 55 on the upper and lower portions of the vertically long board, and the plate-like locking portions 54 and 55 are formed on the locking device side. It arrange | positions in the opposing position of the members 35 and 36. FIG. Further, a roller receiver 57 is provided below the plate-like locking portion 55 of the receiving metal 53. In addition, a gap cover portion is provided on the side portion of the metal fitting 53 as a side edge portion along the side edge of the long substrate.

  When the front frame 51 is closed with respect to the main body frame 50 for locking, first, the inclined surfaces of the flange members 35 and 36 come into contact with the end portions of the plate-like locking portions 54 and 55 of the receiving metal 53 and the flange member 35. , 36 tilts downward, and when the locking recesses of the flange members 35, 36 are engaged with the plate-shaped locking portions 54, 55, the flange members 35, 36 are tilted and returned upward as shown in FIG. To be locked (FIG. 9).

  On the other hand, when the unlocking key is inserted into the key conversion type lock 1 and turned to the right in order to open the front frame 51, the lock shaft 5 and the cam plate 16 of the conversion type lock body 2 rotate in the same direction. Due to the engagement with the cam plate 16, the connecting rod 34 moves upward against the urging force of the coil spring 47, whereby the upper and lower flange members 35, 36 tilt downward, and the main body frame 50 side. The engagement with the locking portions 54 and 55 of the receiving metal 53 is released, and the unlocked state is obtained.

  On the other hand, when resetting the game machine, when the unlocking key is inserted into the key conversion type lock 1 and turned to the left, the lock shaft 5 and the cam plate 16 are rotated in the same direction, and the engagement with the cam plate 16 is performed. Accordingly, the switch operating rod 45 moves downward against the urging force of the coil spring 47. At this time, the operation switch 49 detects the lower end of the switch operating rod 45 and outputs a signal, and this signal is sent as a reset signal.

  On the other hand, when converting the unlocking key of the locking device into a new key, the front frame 51 is opened using the current unlocking key, and in that state, a finger is inserted inside the front frame 51, The knob 18b of the operation shaft 18 linked to the operation knob 6 for reset located on the back surface of the extended block 10 inside the base frame 31 is gripped and turned.

  At this time, as shown in FIG. 8, the operation knob 6 of the convertible lock body 2 is moved inward, that is, to the reset side by the rotation of the operation shaft 18, and in this state, the unlock key is rotated 180 degrees. By the operation of the operation shaft 18 and the operation knob 6, the lock reset pin is pushed, the engagement between the inner cylinder 4 and the lock shaft 5 is released, and only the inner cylinder 4 is rotated 180 degrees. At this time, the through holes in the inner cylinder 4 are in communication with the spacer supply through holes in the outer cylinder 3, and the code setting spacers of the respective through holes gather in the inner cylinder through holes and the spacer supply through holes.

  Next, when the current unlocking key is pulled out and a new key is inserted into the key hole, the cord setting spacer moves from the spacer supply through hole to the through hole of the inner cylinder 4 according to the depth of the groove of the new key. The key code is changed to a code corresponding to the new key. In this state, if the key is rotated 180 degrees so as to return to the original position, the reset pin returns to the position where the inner cylinder 4 and the lock shaft 5 are connected, and the inner cylinder 4 and the lock shaft 5 rotate integrally. The unlock key is converted into a new key.

  As described above, even if the key conversion type lock 1 has a long shape by using a general-purpose conversion lock and attaching the extension block 10 to the back surface of the flange portion, the operation shaft 18 is provided on the back surface of the extension block 10. Since the knob 18b is projected, the unlocking key can be converted by a simple operation by holding the knob 18b and turning the operation shaft 18. Therefore, even with a game machine having a thick front frame (front door) such as a slot machine, a locking device can be manufactured at low cost using a general-purpose conversion lock.

  Also, not only the locking device that locks the thick front door of the slot machine, but also the thick front frame in recent pachinko machines, the locking device having the above-mentioned key conversion type lock can be used to easily convert the unlocking key. Can do.

  In the above-described embodiment, the operating knob is moved around the axis to move the operating knob. However, the operating shaft is pivoted about the center of the operating axis, and the operating shaft is swung (rotated) around the axis. ) To move the control knob.

  Further, in the above embodiment, the knob 18b protrudes from the end of the operation shaft 18, but an engagement portion that can be engaged with the tip of the driver is provided at the tip of the knob as an engagement knob. The operating shaft 18 can be rotated by a driver. In that case, the engaging knob can be exposed without protruding.

It is a front view of the key conversion type lock which shows one Embodiment of this invention. It is a left view of the lock. It is a front view of the lock. It is a rear view of the lock. It is a disassembled perspective view of the lock. It is an exploded perspective view in the state where a part of the lock was assembled. It is a perspective view of the conversion type lock body 2. FIG. (A) And (b) is explanatory drawing which shows the relationship between the engagement recessed part 18a of the operating shaft 18, and the operating knob 6. FIG. It is a left view of the locking device which attached the key conversion type lock. It is a front view of the locking device which attached the key conversion type lock. It is a rear view of the locking device which attached the key conversion type lock. It is a right view of the locking device. It is a left view with a section which shows the use state of the locking device.

Explanation of symbols

1-key conversion type lock 2-conversion type lock main body 3-outer cylinder 4-inner cylinder 5-lock shaft 6-operation knob 7-flange 10-extending block 11-recess for shaft 12-recess for operation shaft 15- Connecting shaft 18-Operation shaft 18b-Knob

Claims (2)

An outer cylinder provided with a flange at the end, an inner cylinder that is rotatably fitted inside the outer cylinder, and an inner side of the outer cylinder that can be engaged with the inner cylinder in the vicinity of the end of the inner cylinder A key-converting lock in which a conversion-type lock main body provided with a lock shaft , attached to the tip of the extension block ,
A plurality of through holes are formed in the inner cylinder and the outer cylinder of the conversion type lock main body at right angles to the axial direction, and the through holes of the inner cylinder and the outer cylinder are respectively drilled at corresponding positions where they can communicate with each other, A reset through hole is formed between the inner cylinder and the lock shaft, and a reset pin is inserted into the reset through hole to engage the lock shaft and the inner cylinder, and the reset pin is released from engagement. An operation knob is movably provided on the rear surface of the flange portion of the convertible lock body, and a drive pin, a cord setting spacer, and a base pin are urged by a coil spring in the plurality of through holes of the inner cylinder and the outer cylinder, respectively. Inserted,
The extended block is fixed to the rear surface of the flange portion of the conversion equation lock body,
A mounting flange having a mounting hole is provided at the end of the extended block,
A shaft recess is formed in the extended block, and an operation shaft recess is formed adjacent to the shaft recess,
The connecting shaft is rotatably held by inserting the connecting shaft into the shaft recess, and fitting the fitting holding member into the shaft recess from above the connecting shaft.
The operation shaft is rotatably held by inserting the operation shaft into the operation shaft recess, and fitting the fitting holding member into the operation shaft recess from above the operation shaft.
A small diameter portion is provided at the end of the connecting shaft and the operating shaft,
Inner flange portions corresponding to the small diameter portions are provided at the end portions of the shaft recesses and the operation shaft recesses of the extended block,
When the connecting shaft is inserted into the shaft recess and the operation shaft is inserted into the operation shaft recess, the small diameter portions of the connection shaft and the operation shaft are fitted into the inner flange portion, The connecting shaft and the operation shaft are held in the shaft recess or the operation shaft recess in a state in which the connection shaft and the operation shaft are rotatable and restrained in the axial direction.
The end of the connecting shaft is connected to the end of the lock shaft of the convertible lock body,
The tip of the operating shaft provided with a knob at the end is adapted to be able to move the operating knob by engaging the operating knob when the operating shaft is rotated.
A key conversion type lock, wherein the operation knob is moved by the rotation operation of the operation shaft and reset for key conversion is performed. The engagement knob part which can engage the front-end | tip of a driver at the terminal of the said operating shaft is formed, and this engagement knob part is exposed or protruded in the end surface of the said extension block. Key conversion type lock.

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