JP2002058846A - Locking device for game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device for a game machine unlockable by various fraudulent operation tools utilizing a gap between the front frame of the game machine and a main body frame having a high crime preventing property. SOLUTION: A lock member 8 formed with an inclined edge 52a for abutting on a receiving metal fixture 13 fitted to a main body frame 46 and a lock pawl 38 coupled with the locking hole 39 of a locking rod is excited by a second tensile spring 23 and slidably arranged between the locking rod 5 slidably arranged against the exciting force of a first tensile spring 19 along the inside of a support plate 3 erected from a fitting plate 2 fitted to the front frame 14 of the game machine and the support plate 3. A lock releasing member 7 releasing the coupling between the lock pawl of the lock member and the locking hole of the locking rod is slidably arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for locking a front frame of a gaming machine to a main frame. More specifically, the present invention relates to a locking device suitable for locking or unlocking a front frame of a gaming machine exemplified by a pachinko machine, a pachislot machine, a slot machine, a smart ball, an arrangement ball, and the like with respect to a main body frame. It is about.

[0002]

2. Description of the Related Art One end of a front frame of a game machine is fixed to a main frame by a hinge, and the other end is a free end and is rotatable with respect to the main frame. A locking device that enables locking with the main body frame is provided. As such a locking device, for example, registered utility model No. 250845
In Patent Document 2, a locking rod is disposed inside a base frame in which a mounting plate and a support plate are formed in an L-shaped cross section so as to be vertically slidable along the support plate, and the locking rod is extended by a tension spring. The upper and lower ends of the locking rod are connected to a hook member which is urged upward and pivotally supported on the upper and lower portions of the support plate, and a cylinder lock is attached to an intermediate portion of the mounting plate. A structure in which a cam plate engaged with a locking rod is fixed is described.

In a gaming machine provided with such a locking device, when a hinge is used as a fulcrum to press the front frame to close it, the hook member comes into contact with a metal fitting provided on the main body frame, and the hook member is moved. When the locking rod is tilted upward and the locking rod slides downward and further presses the front frame to close, the locking rod returns to the locking position by the urging force of the tension spring, and the hook member engages with the receiving bracket, and the front frame is engaged. Is locked to the body frame. Then, insert the key into the cylinder lock, rotate the cam plate in the unlocking direction by operating the key, slide the locking rod, release the engagement between the receiving bracket and the hook member, and use the hinge as a fulcrum to support the front frame. Can be opened.

[0004] In a gaming machine employing such a locking device, some method that does not use a key for unlocking, for example, a slight gap between the front frame and the main frame,
Inserting a strip-shaped thin steel plate with a hook formed at the tip or an operating tool such as a piano wire with a bent tip and a hook formed, hooking the tip of the hook on the hook member and pulling it, the receiving bracket and the hook member Can be released, and the front frame can be opened with the hinge as a fulcrum. In this way, when the front frame is opened, it becomes possible to operate the devices and components disposed on the back of the front frame, and to modify these devices and components and to control the ROM controlling the winning rate of the gaming machine. Back R with high winning rate
Unauthorized operation such as exchange with OM becomes possible.

[0005]

SUMMARY OF THE INVENTION The present invention has been made as a result of earnest research in view of the above-described circumstances.
It is an object of the present invention to provide a locking device for a game machine with high security that cannot be unlocked by various types of unauthorized operation tools utilizing a gap between a front frame and a body frame of the game machine.

[0006]

In order to solve the above-mentioned problems, the present invention has a structure in which hooks are formed on the upper and lower portions inside a base frame in which a support plate stands upright on a side of a vertically long mounting plate. A locking rod is urged by a first tension spring to be slidable along the longitudinal direction of the support plate, and a cylinder lock is attached to an intermediate portion of the mounting plate and fixed to a lock shaft of the cylinder lock. The cam plate is engaged with an engaging portion of a locking rod, the mounting plate is attached to a front frame that can be opened and closed with respect to the main body frame, and the hook portion is engaged with a receiving bracket attached to the main body frame. In a locking device of a game machine locked by being engaged, a lock member having a locking claw formed between an inclined edge for contact with one receiving fitting and a locking rod is urged by a second tension spring. , Slidably disposed between the locking rod and the support plate, wherein the locking rod includes the locking claw. An unlocking member having an engaging portion to be engaged and an abutting portion to the lock member and an engaging portion to the cam plate is slidably disposed between the locking rod and the support plate. It is characterized by being done.

According to this structure, when the front frame is pressed against the main body frame, the hook of the locking rod comes into contact with the receiving metal, and the locking rod moves from the locked position to the support plate against the urging force of the first tension spring. When the door is slid along, and the front frame is further pressed to close, the locking rod is returned to the locking position by the urging force of the first tension spring, and the upper and lower hooks are engaged with the receiving fitting, and the locked state is established. Become.
At this time, the locking member has its inclined edge abutting on the receiving metal fitting, slides along the support plate against the urging force of the second tension spring, and the locking claw is engaged with the locking portion of the locking rod. Engagement and the locking rod are locked by the locking member. In this locked state, from a slight gap between the front frame and the body frame, an operating tool such as a strip-shaped thin steel plate having a hook formed at the tip or a piano wire having a hook formed by bending the tip is formed. Even if it is inserted and the tip of the hook is hooked on the hook and pulled, the locking rod remains locked and does not slide and cannot be unlocked. For this reason, the front frame cannot be opened, and illegal operations on the devices and components arranged on the back of the front frame, modification of these devices and components, and the ROM that controls the winning rate of the gaming machine have a high winning rate. It is impossible to perform an illegal operation such as exchange with a ROM, which has been performed by a conventional locking device, and the security is high. That is, in order to unlock the lock illegally, an operating tool for releasing the lock state of the lock rod in which the lock claw of the lock member is engaged with the lock portion of the lock rod, and the lock rod is slid along the support plate. Two types of operating tools, such as operating tools for releasing the engagement between the hook and the receiving bracket, are inserted from the gap between the front frame and the main body frame. The sliding operation of the locking rod must be performed almost simultaneously in parallel with the operating tool described above, and unlocking is extremely difficult.

On the other hand, when the key is inserted into the cylinder lock in the locked state, and the cam plate is rotated by the key operation in the unlocking direction to perform the unlocking operation of the cylinder lock, the cam plate is unlocked by the unlocking member. The lock release member slides against the biasing force of the second tension spring when engaged with the engagement portion, and the abutting portion of the lock release member allows the lock claw and the locking portion of the locking rod to engage with each other. The engagement is released, and the locking rod can slide. Next, the cam plate engages with the engaging portion of the locking rod, and the locking rod slides along the support plate against the urging force of the first tension spring, and the hook and the hook engage with the receiving fitting. The engagement is released. Thus, the front frame can be opened to the main body frame with the hinge as a fulcrum. When the front frame is opened with respect to the main body frame and the unlocking operation by the key is stopped, the locking member is biased by the second tension spring, and the locking rod is moved to the first position.
It returns to the initial position by the urging force of the tension spring.

It is preferable that an end surface of the lock claw on the locking rod side is flush with an inner surface of the locking rod. According to this, the end surface of the locking claw on the locking rod side is
Since the locking rod does not protrude from the inner side, for example, a strip-shaped operating tool such as a thin steel plate or a piano wire is inserted from a slight gap between the front frame and the main body frame to lock the locking rod. Even when the lock claw is disengaged from the portion, the engagement between the locking portion of the locking rod and the lock claw cannot be easily disengaged since there is no place to be abutted or caught.

It is preferable that the locking portion formed on the locking rod and engaging with the locking claw of the locking member is a locking claw step of a locking hole formed in the locking rod. According to this, the locking rod can be securely locked by a simple, compact, and firm structure.

[0011]

Embodiments of the present invention will be described below, and the present invention will be described in more detail. Of course, the present invention is not limited by the following embodiments. FIG. 1 is a partially exploded perspective view showing an embodiment of a game machine locking device according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a left side view thereof, and FIG.
5 is a right side view, FIG. 5 is a rear view, and FIG. 6 is a perspective view showing a use mode of the locking device. Here, the locking device is
It is shown as being used in a pachislot machine.

As shown in the figure, the locking device 1 comprises:
A locking rod 5 is slidable up and down between the locked position and the unlocked position along the support plate 3 inside the base frame 4 in which the support plate 3 stands upright on the side of the vertically long mounting plate 2. The reset operation rod 6, the lock release member 7, and the lock member 8 are disposed in the space between the locking rod 5 and the support plate 3 in order from the top, and are slidable vertically. ing.

The base frame 4 is formed by bending a metal plate. The mounting plate 2 has the same width at the upper part and the lower part and the width at the middle part 2a. A support plate 3 divided into an upper support plate 3a, an intermediate support plate 3b, and a lower support plate 3c along one longitudinal side edge (the right side edge in FIG. 1) stands vertically rearward. On the other side edge (left side edge in FIG. 1) of the mounting plate 2 in the longitudinal direction, a narrow reinforcing piece 9 extending vertically from the upper end to the lower end is formed so as to stand vertically rearward. .

A cylinder lock 1 is provided at an intermediate portion 2a of the mounting plate 2.
0 is screwed via the flange portion 10b, the lock shaft 10a of the cylinder lock 10 projects inside the base frame 4, and the lock shaft 10a has a first protrusion 11a and a second protrusion 11a. 1
The cam plate 11 provided with 1b is fixed. A plurality of setscrew insertion holes 12 are formed in the mounting plate 2, and the locking device 1 is mounted to the back of the free end of the front frame 14 of the pachislot machine with screws or the like.

Concave portions 15 are formed in the upper rear edge of the upper support plate 3a and the lower rear edge of the lower support plate 3c. Upper support plate 3a
, A vertically long escape window 16 is formed, and the locking rod 5
Spring retaining portion 17 and spring retaining portion 18 of reset operating rod 6
However, one end of the first tension spring 19 is located at the release window 16, one end of the first tension spring 19 is engaged with the spring engaging portion 17 of the locking rod 5, and the other end is engaged with the spring engaging portion 18 of the reset operating rod 6. The reset operating rod 6 is urged upward downward. Intermediate support plate 3b
Has a vertically long escape hole 20 which functions as an escape for the first protrusion 11a or the second protrusion 11b of the cam plate 11 and enables the cam plate 11 to rotate counterclockwise or clockwise. I do. In addition, a slit 22 is formed in the lower support plate 3c so that the protruding piece 21 of the lock member 8 protrudes outward.
A spring retaining portion 24 of the second tension spring 23 is provided.
Further, a plastic contact member 26 having a curved contact guide surface is attached to a position below the concave portion 15 formed on the rear edge of the lower support plate 3c.

The locking rod 5 is bent so that a metal plate can slide up and down along an upper support plate 3a, an intermediate support plate 3b, and a lower support plate 3c.
Are formed. At the upper and lower portions of the locking rod 5, receiving brackets 1 are provided.
Downward hooks 27, 27 that engage with 3, 13 protrude rearward, and the hooks 27 are formed with a contact surface 27a with the bent narrow metal fitting 13. .
The hook may be a member obtained by welding a separate hook member to the locking rod.

The locking rod 5 has slots 28a, 28b, 28
c, 28d are drilled and the pins 29a, 29b, 29c,
29d are long holes 28a, 28b, 28c, 28d, respectively.
Through which the locking rod 5 can be slid up and down. A female screw is formed on the pin 29c, and a mounting bracket 31 provided with the second switch 30 is fixed with a screw 32 from outside the lower support plate 3c. If the second switch 30 is not provided, the mounting bracket 3
1 is unnecessary, and the pin 29c may have the same structure as the other pins.

The intermediate step 5a of the locking rod 5 has an engagement hole 34 with which the first protrusion 11a of the cam plate 11 engages from below,
An escape hole 35 for the projection 11b is formed, and a projection 36 for guiding the reset operation rod 6 is formed. A lock claw 38 of the lock member 8 is provided below the locking rod 5.
A locking hole 39 formed with a step-like locking edge 39a with which the lower end is engaged.

The reset operating rod 6 is bent at an intermediate portion so that a metal plate can slide up and down along an upper support plate 3a and an intermediate support plate 3b.
And a lower plate portion 6b. Upper plate 6a
As described above, the spring retaining portion 18 is formed, and a support 40 that is bent at a right angle from the rear edge of the upper plate portion 6a and protrudes outward is formed. The operating body 41 of the first switch is attached. The lower plate portion 6b has a second protrusion 11 of the cam plate 11 provided thereon.
An engagement hole 42 for engaging with the locking rod 5 from above and a guide hole 43 for receiving the projection 36 of the locking rod 5 are formed. From the lower edge to the front edge of the lower plate 6b, approximately one-fourth is provided. It has a shape whose size is notched. A long hole 44 is formed in the upper plate portion 6a of the reset operation rod 6, and the reset operation rod 6 is opposed to the urging force of the first tension spring 19 by a pin 29b fixed to the upper support plate. It is slidable up and down.

The first switch is a first switch operating body 41.
And outputs a reset signal of the pachi-slot machine. Although not shown, the pachi-slot machine is installed in the main body frame 46.
As the first switch, for example, a non-contact switch such as a photoelectric switch can be adopted, but it is not limited to this.

As shown in FIGS. 1 and 7, the unlocking member 7 is bent at the intermediate portion so that the metal plate can slide up and down along the intermediate support plate 3b and the lower support plate 3c. Then, the upper plate 7a and the lower plate 7b are formed, and the upper plate 7a has a shape in which approximately half the size in the vertical direction is cut out from the upper edge to the rear edge. I have. The first projection 1 of the cam plate 11 is provided on the upper plate 7a.
An engagement hole 48 with which 1a engages from below is formed.
When assembled to the locking device 1, the engagement hole 34 of the locking rod 5 is positioned such that the upper edge of the engagement hole 48 of the unlocking member is located a predetermined distance below the upper edge of the engagement hole 34 of the locking rod 5. And an engagement hole 48 of the lock release member 7 are set.

A lock release portion 49 is formed in the lower plate portion 7b so that the front edge side extends downward, and the lock release portion 49 has an inclined contact edge 4 that contacts the lock claw 38.
9a and a sliding edge 49b that slides on the mounting plate 2 are provided. A long hole 50 is formed in the lower plate portion 7b, and the lock release member 7 can be slid up and down by a pin 29c fixed to the lower support plate 3c.

The lock member 8 is made of a metal plate.
As shown in FIGS. 1 and 8, in the upper part, the projecting piece 21 provided with the spring retaining hole 21 a is bent at a right angle so as to protrude outside the support plate 3, and the lock claw 38 of the support plate 3 It is bent at a right angle to protrude inward.
One end of the second tension spring 23 is locked in the spring locking hole 21a, and the other end is locked in the spring locking portion 24 of the lower support plate 3c. In the lower part of the lock member 8, a protruding portion 52 that protrudes rearward is formed, and the lower edge thereof is an inclined edge 52 a that comes into contact with the receiving bracket 13. A long hole 53 is formed in the lower part, and the lock member 8 can be slid up and down against the urging force of the second tension spring 23 by a pin 29d fixed to the lower support plate 3c. .

The width of the slit 22 of the lower support plate 3c is
In addition to the thickness of the protruding piece 21, a predetermined margin is set to occur on the front side, and when the lock claw 38 of the lock member 8 engages with the locking edge 39 a of the locking hole 39 of the locking rod 5. The locking member 8 is tilted counterclockwise in FIG. 1 around the pin 29 d, and the locking claw 38 is attached to the locking edge 39 a of the locking hole 39.
The lower edge is engaged so that the locking rod 5 is locked. The vertical length of the slit 22 of the lower support plate 3c is set so that the lock member 8 does not hinder sliding between the lock position and the release position of the locking hole 39 of the locking rod 5. .

The inner end surface of the lock claw 38 is set to be flush with the inner surface of the locking rod 5. Locking device 1
When assembled, the lock claw 38 does not protrude from the inner surface of the locking rod 5 and, for example, from a slight gap between the front frame 14 and the main body frame 46, such as a strip-shaped thin steel plate or a piano wire. Even if the lock claw 38 is disengaged from the locking hole 39 of the locking rod 5 by inserting the operating tool, there is no place where the locking claw 38 comes into contact with or is caught. Cannot be easily disengaged.

In this embodiment, the second switch 30 is fixed to the lower support plate 3c via the mounting bracket 31, and the projection 21 serves as a second switch operating portion. The second switch 30 outputs a signal for confirming the locked state of the locking rod 5 and the receiving bracket 13 when the protruding piece 21 of the lock member 8 is detected. For example, a non-contact switch such as a photoelectric switch can be adopted. However, it is not limited to this.

The receiving members 13, 13 are pin-shaped bodies and are fixed to the substrate 55 at positions corresponding to the hooks 27, 27 of the locking rod 5. A plurality of setscrew insertion holes 56 are formed in the substrate 55, and the body frame 4 of the pachislot machine is screwed or the like.
6 is attached. A receiving portion 57 of the plastic contact member 26 attached to the lower support plate 3c is provided at the lower end of the substrate 55. The front side of the receiving portion 57 is an inclined surface that follows the flat portion.

The receiving fitting is not limited to the structure shown in FIG. 6. For example, a plate-like piece is erected from a substrate, and the hook of the locking rod 5 is engaged with the plate-like piece. Structure and the like can be adopted.

This locking device 1 can be assembled as follows. Inside the support plate 3 of the base frame 4, the reset operating rod 6, the lock release member 7,
The lock members 8 are respectively arranged at predetermined positions. Here, first, the protruding piece 21 of the lock member 8 is made to protrude outward from the slit 22 of the lower support plate 3c. Next, the locking rod 5 is reset by aligning the projection 36 of the locking rod 5 with the guide hole 43 of the resetting rod 6 and positioning the lock claw 38 in the locking hole 39 of the locking rod 5. Rod 6,
The lock release member 7 and the lock member 8 are overlapped. Then, the locking rod 5, the reset operating rod 6, the unlocking member 7,
Pins 29a are inserted into the long holes formed in the lock member 8, respectively.
29b, 29c, and 29d are inserted, the pin is fixed to the support plate 3, the locking rod 5 is slidable in the vertical direction, and the reset operation rod 6 is released between the locking rod 5 and the support plate 3, and the lock is released. The member 7 and the lock member 8 are slidable vertically. At this time, the pin 29c is screwed together with the mounting bracket 31 provided on the lower support plate 3c side.
Fixed at 2.

The cylinder lock 10 having the cam plate 11 fixed to the lock shaft 10a is inserted into a cylinder lock insertion hole (not shown) formed in the intermediate portion 2a of the mounting plate 2, and the first of the cam plate 11 is formed.
The protrusion 11a is inserted into the engagement hole 34 of the locking rod 5 and the second protrusion 11b
Is fixed to the mounting plate 2 via the flange portion 10b so as to face the escape hole 35. Then, one end of the first tension spring 19 is hooked to the spring hook 17 of the locking rod 5, and the other end is hooked to the spring hook 18 of the reset operating rod 6. Then, one end of the second tension spring 23 is hooked to the spring hook hole 21a of the projecting piece 21 of the lock member 8, and the other end is hooked to the spring hook portion 24 of the lower support plate 3c.

The locking device 1 assembled in this manner
As shown in FIG. 6, is fixed to the back surface of the free end of the front frame 14 of the pachislot machine by using screws (not shown) using the set screw insertion holes 12 of the mounting plate 2. The metal fittings 13, 13 are positioned so as to correspond to the hooks 27, 27 of the locking device 1, and the substrate 55 is fixed to the main body frame 46 with screws (not shown).

When the front frame 14 is open,
As shown in FIG. 9A, the locking rod 5 is in the locking position where the pin 29d is in contact with the upper end of the elongated hole 29d by the urging force of the first tension spring 19.

The lock member 8 is located at a position where the pin 29d is in contact with the upper end of the elongated hole 53 by the urging force of the second tension spring 23. The inclined edge 52a of the projection 52 is 27, the overhanging portion 52 is provided with the concave portion 15 of the lower support plate 3 c and the hook portion 2 of the locking rod 5.
7 and is in a state of closing the recess 15. In this state, the lock claw 38 is not engaged with the locking edge 39 a of the locking hole 39 of the locking rod 5.

The unlocking member 7 is at a position lowered by gravity, and at that position, the upper end of the long hole 50 is in contact with the pin 29c. In this state,
The contact edge 49a of the lock release portion 49 does not contact the lock claw 38, and the upper edge of the engagement hole 48 of the lock release member 7 is located below the upper edge of the engagement hole 34 of the locking rod 5. are doing.

In order to close the front frame 14 with respect to the main frame 46, the front frame 14 is pressed with the hinge as a fulcrum. The front frame 14 has its free end slightly lowered due to the weight of the various devices attached thereto, but the contact member 26 provided on the lower support plate 3c is fixed to the main body frame 46. The front frame 14 is guided upward by the receiving portion 57 of the substrate 55 that has been lifted upward. When the contact surfaces 27a of the hooks 27 contact the receiving brackets 13, the locking rod 5 slides upward along the support plate 3 against the urging force of the first tension spring 19. (See FIG. 9B). At this time, as the locking rod 5 slides upward, the inclined edge 52 a of the protruding portion 52 abuts on the back side of the abutting surface 27 a of the hook 27, and the locking member 5 It slides upward along the support plate 3 against the urging force.

Further, when the front frame 14 is pressed until the front frame 14 is closed by the main frame 46, the concave portion 1 of the support plate 3 is pressed.
5 and 15 receive the receiving fittings 13 and 13, the locking rod 5 is slid and returned to the lower locking position by the urging force of the first tension spring 19, and the hook portions 27 and 27 engage with the receiving fittings 13 and 13. Lock state. At this time, the inclined edge 52a of the projecting portion 52 of the lock member 8 comes into contact with the receiving bracket 13, and the lock member 8 slides slightly upward against the urging force of the second tension spring 23. 8 tilts counterclockwise about the pin 29d, and the locking edge 39a of the locking hole 39 of the locking rod 5
, The lower edge of the lock claw 38 is engaged. As a result, the locking rod 5 is locked (see FIG. 9C). The biasing force of the second tension spring 23 is a force acting in an oblique direction from the locking hole 39 toward the spring hooking portion 24, and can be decomposed into vertical and horizontal component forces. Urges the lock member 8 downward. The horizontal component biases the lock member 8 counterclockwise about the pin 29d in the locked state in which the locking claw 38 is engaged with the locking edge 39a of the locking hole 39 of the locking rod 5. And a function of maintaining the locked state, and is not easily released by vibration or the like.

In this locked state, a strip-like thin steel plate having a hook formed at the tip or a piano wire having a hook formed by bending the tip is formed from a slight gap between the front frame and the main body frame. Even if the operating tool is inserted and the tip of the hook is hooked on the hook and pulled, the locking rod remains locked, does not slide, and cannot be unlocked. For this reason, the front frame cannot be opened, and illegal operations on the devices and components arranged on the back of the front frame, modification of these devices and components, and the ROM that controls the winning rate of the gaming machine have a high winning rate. R
Unauthorized operations such as exchange with an OM, which have been performed by a conventional locking device, cannot be performed, and the security is high. That is, in order to unlock the lock illegally, an operating tool for releasing the locked state of the locking rod in which the locking claw of the locking member is engaged with the locking portion of the locking rod,
Two types of operating tools, such as an operating tool that slides the locking rod along the support plate to release the engagement between the hook and the receiving bracket, are inserted from the gap between the front frame and the main body frame, and one of the operating tools is inserted. Therefore, the unlocking of the locking rod and the sliding of the locking rod by the other operating tool must be performed almost simultaneously and in parallel, and it is extremely difficult to unlock.

When the front frame 14 is closed by the body frame 46, the contact member 2 provided on the lower support plate 3c
6 is supported on a flat portion of the receiving portion 57 of the substrate 55 fixed to the main body frame 46, and the front frame is accurately maintained at a predetermined position. In the locked state in which the front frame 14 is closed by the body frame 46, the recesses 15, 15 of the support plate 3
3 and 13, the front frame 14 is forcibly lifted to release the engagement between the hook portion 27 of the locking rod 5 and the receiving bracket 13. 13, 13 to make it impossible to lift.

In the locked state, since the protruding piece 21 of the lock member 8 forms the second switch operating portion, the lock member 8 slides upward to cause the second switch 30 to slide.
Detects the presence of the projecting piece 21 which is the second switch operating part,
By outputting a lock confirmation signal, for example, the locked state of the pachislot machine can be confirmed on the centralized control panel.

In the locked state, a key (not shown)
Into the cylinder lock 10 and operate the cam plate 1 by key operation.
5 is rotated counterclockwise in FIG.
The first projection 11a is engaged with the upper edge of the engagement hole 48 of the unlocking member 7 from below, the unlocking member 7 slides upward, and the contact edge 49a of the unlocking portion 49 is 8 against the urging force of the second tension spring 23, and the lock member 8 pivots around the pin 29d in FIG.
(C), the locking claw 38 is disengaged from the locking edge 39a of the locking hole 39 of the locking rod 5 engaged with the locking rod 5, and the locking rod 5 can slide (FIG. 10 ( a)).

Subsequently, when the cam plate 11 is rotated by a key operation, the first protrusion 11a of the cam plate 11 also engages with the upper edge of the engagement hole 34 of the locking rod 5, and together with the lock release member 7, The locking rod 5 also slides upward along the support plate 3, and the hook 2
The engagement between the metal fittings 7, 27 and the receiving fittings 13, 13 is released and unlocked (see FIG. 10B). Then, when the front frame is rotated with the hinge as a fulcrum, the contact member 26 provided on the lower support plate 3c goes down the receiving portion 57 of the substrate 55, and the front frame 14 is moved with the hinge as a fulcrum. Can be opened against.

When this key operation is completed, the locking rod 5 is moved by the urging force of the first tension spring 19 so that the lock member 8 is moved to the second position.
By the urging force of the tension spring 23, the lock release member 7
Returns to the position shown in FIG. 9A by gravity.

In this embodiment, the vertical sliding distance of the locking rod 5, the unlocking member 7, and the locking member 8 is determined by the length of the pin inserted into the upper and lower ends of the elongated hole formed in these members. Are set in the range where they abut.

The front frame 14 is opened, and the lock member 8 is
By returning to the initial position by the urging force of the tension spring 23, the second switch 30 detects the retreat of the protruding piece 21, which is the second switch operating unit, and outputs an unlocking confirmation signal. Thus, the unlocked state of the pachislot machine can be confirmed.

When the key is inserted into the cylinder lock 10 and the cam plate 11 is rotated clockwise in FIG. 5 in the locked state, the second projection 11b of the cam plate 11 The lower switch 42 is engaged with the lower edge from above, and the reset operation rod 6 is slid downward against the urging force of the first tension spring 19, so that the first switch detects the operation body 41 and a reset signal is output. . The pachislot machine is reset by the reset signal. When the reset operation by the key is released, the reset operating rod 6 is returned to the initial position where the pin 29b is in contact with the lower end of the elongated hole 44 by the urging force of the first tension spring 19.

In the locking device 1 having such a configuration, the reset operation rod 6, the lock release member 7, and the lock member 8 having the above-described structures are guided by the pins 29 between the lock rod 5 and the support plate 3. The sliding device has a simple structure, a small number of parts, is inexpensive and compact, and the work of attaching the locking device 1 to the back of the free end of the front frame is easy. It does not hinder the work of mounting / adjusting / exchanging devices and parts.

The locking device is not limited to the above-described structure, but may be, for example, a modified structure as described below. That is, as shown in FIG. 11, the vertical width of the projecting portion 72 of the lock member 71 is reduced so that even when the lock member 71 slides upward, the lock member 71 is hidden by the hook 27 below the locking rod 5. It may not be necessary.

Further, instead of a structure in which the lock claw 38 of the lock member 8 is engaged with the locking hole 39 of the locking rod 5 to lock the sliding of the locking rod, a notch is formed in the locking rod, and the lock is formed in the notch. The locking claw 38 of the member 8 may be engaged.

In the locking device 1 described above, the hook portion of the locking rod is directed downward, but is not limited to this, and may be upward. In this case, the inclined edge of the projecting portion of the lock member is directed upward. , Etc., the shape and structure may be appropriately changed, and detailed description will be omitted.

The position at which the cylinder lock is mounted on the mounting plate is not limited to the intermediate portion of the mounting plate, but may be the upper portion or the lower portion of the mounting plate 2.

The support plate is not divided into an upper part, a middle part, and a lower part, but may be a linear one in which the support plate is integrated. For example, the reinforcing piece is omitted and the middle part of the mounting plate is removed. You may make it expand inside (left side) and attach a cylinder lock to the intermediate part.

The locking device has been described as being suitable for a pachislot machine, but is not limited to this. A locking device for a pachinko machine is adopted by adopting a glass frame unlocking operation rod for a pachinko machine instead of a reset operation rod. Needless to say,

[0053]

Since the locking device for a game machine according to the present invention is constructed as described above in detail, it is possible to use any unauthorized method without using a key for unlocking, for example, a method of connecting a front frame and a main body frame. From the slight gap between them, insert a strip-shaped thin steel plate with a hook formed at the tip or an operating tool such as a piano wire with a hook formed by bending the tip, and hook the tip of the hook on the hook member and pull it. Even if it is attempted to unlock, the locking rod is locked by the lock member, so it is not possible to unlock it, and the front frame is opened with the hinge as a fulcrum, and the equipment and the Unauthorized operations on parts, such as altering these devices or parts, or replacing the ROM that controls the winning rate of a gaming machine with a back ROM with a high winning rate, such as those that have been done with conventional locking devices. Performing various operations Will not be able to have, it becomes a high crime prevention. That is, for unlocking, an operating tool for releasing the locked state of the locking rod in which the locking claw of the locking member is engaged with the locking portion of the locking rod, and the locking rod is slid along the support plate to engage the hook. Two types of operating tools, such as an operating tool for releasing the engagement between the part and the receiving bracket, are inserted from the gap between the front frame and the main body frame, and one of the operating tools releases the locked state of the locking rod and the other operates. The sliding of the locking rod must be performed almost simultaneously and in parallel with a tool, and it is extremely difficult to unlock. Further, the locking device of the present invention has a simple structure, a small number of parts, is compact and inexpensive, and does not hinder the work of mounting / adjusting and replacing various machines and components for a game machine. As there is no security, the safety is high and the merit is great both economically and industrially.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view showing one embodiment of a game machine locking device of the present invention.

FIG. 2 is a front view of the locking device of FIG.

FIG. 3 is a left side view of the locking device of FIG. 1;

FIG. 4 is a right side view of the locking device of FIG. 1;

FIG. 5 is a rear view of the locking device of FIG. 1;

FIG. 6 is a perspective view showing a use state of the locking device of FIG. 1;

7A is a front view of the unlocking member, and FIG. 7B is a right side view thereof.

8A is a front view and FIG. 8B is a right side view of the lock member.

FIGS. 9A and 9B are partially enlarged enlarged views for explaining a locking operation of the locking device of FIG. 1, wherein FIG. 9A shows an unlocked state, FIG. 9B shows a state in the middle of locking, and FIG. 9C shows a locked state. .

10 is an enlarged view, partly broken away, for explaining the unlocking operation of the locking device of FIG. 1, wherein FIG. 10 (a) shows a state in which a locking claw is disengaged from a locking edge of a locking hole, and FIG. Indicates a state in which the locking rod has slid upward.

FIG. 11 is a partially cutaway enlarged view showing another embodiment of the present invention in which the shape of the lock member is changed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking device 2 Mounting plate 3 Support plate 4 Base frame 5 Locking rod 6 Reset operating rod 7 Lock release member 8 Lock member 11 Cam plate 13 Receiving bracket 14 Front frame 27 Hook part 38 Lock claw 39 Lock hole 46 Body frame

Claims (3)

[Claims] 1. A locking rod having hooks formed on the upper and lower portions inside a base frame in which a support plate stands upright on a side of a vertically long mounting plate. The cylinder lock is attached to the middle part of the mounting plate, and the cam plate fixed to the lock shaft of the cylinder lock is capable of engaging with the engaging portion of the locking rod. A locking device for a game machine, wherein the mounting plate is mounted on a front frame that is openable and closable with respect to the main body frame, and the hook portion is locked by engaging a receiving metal fitting mounted on the main body frame; A lock member having a locking claw formed between the locking edge of the locking rod and the inclined edge for contact with the receiving bracket is biased by a second tension spring, and is slidably disposed between the locking rod and the support plate. A locking portion for engaging with the lock claw is formed on the locking rod, and a contact portion with the lock member; A lock device for a game machine, wherein an unlocking member formed with an engagement portion between the lock plate and the cam plate is slidably disposed between the locking rod and the support plate. 2. The locking device for a game machine according to claim 1, wherein an end surface of the locking claw on the locking rod side is flush with an inner surface of the locking rod. 3. The locking portion formed on the locking rod and engaging with a locking claw of the locking member is a locking claw step of a locking hole formed in the locking rod. Claim 1
Or the locking device for a game machine according to 2.