JP2001070592A - Locking device for game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an illegal unlocking when a front surface frame is forcibly broken open by providing hook members with hook recessed parts locked on locking parts of receiving fittings and forming locking end parts at the inside of the recessed parts to be located at the inside of the hook members from a center line extending along the longitudinal direction of the hook members. SOLUTION: A locking device to be used for a game machine has a base frame body molding a mounting plate 2 and a supporting plate 3 into L-shapes in cross section. On upper and lower parts of the supporting plate 3, each hook member 5 is pivotally fixed so as to be tiltable by a pivot 7. In the upper and lower hook members 5, the intermediate part is interlocked and connected via a connecting rod 4. Each of the hook members 5 has a hook recessed part 5c locked on a locking part 16a of a receiving fitting 16. At this time, the hook recessed part 5c is formed into a shape in which a locking end part 5b at an end of the hook recessed part 5c is put at the inside by a distance A for a center line L passing a center O of the pivot 7 along the longitudinal direction. As a result, frictional resistance between the locking part 16a and the hook members 5 when a front surface frame is forcibly broken open is set to be a large degree.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device used in a game machine such as a pachinko machine or a slot machine for a pachinko hall.

[0002]

2. Description of the Related Art As a locking device for a game machine of this kind,
To lock the front frame (front door) that can be opened and closed via a hinge on the front of the body frame (cabinet) of the game machine, a receiver attached vertically to the inside of the front frame and attached to the body frame side 2. Description of the Related Art A locking device that locks a metal member by hooking a hook-shaped hook member has been generally used.

This locking device usually has a vertically long base frame formed by forming a mounting plate and a support plate into a substantially L-shaped cross section, and a hook member can be tilted on the upper and lower portions of the support plate. The upper and lower hook members are connected by a connecting rod that is pivotally supported and slidably disposed in the base frame body, and a cylinder lock is attached to an intermediate portion of a mounting plate of the base frame body and attached to a tip end of the lock shaft. The cam plate is connected to the connecting rod, the cam plate is rotated by a key operation of the cylinder lock, and the upper and lower hook members are tilted downward through the connecting rod,
Unlocking structure. A coil spring for urging the hook member to the locking side is hooked to the connecting rod, and when the front frame is closed with respect to the main body frame, the hook member hits the edge of the receiving bracket and tilts while locking. The hook member returns to the locked position by the urging force of the coil spring and operates so as to be in the locked state.

[0004]

FIG. 7 shows a locked state of a hook member 20 and a receiving member 21 of a conventional locking device. The hook member 20 is pivotally supported by a support plate 23 of the base frame so as to be rotatable within a certain angle range by a pivot 22, and a connecting rod 24 is connected to an intermediate portion of the hook member 20. The connecting rod 24 is urged upward (locking side) by a coil spring, and the hook member 20 has a center line L passing through the center O of the pivot 22 perpendicular to the longitudinal direction of the base frame (locking position). It is configured to stop at.

[0005] This conventional hook member 20 usually has a center line L extending from the center O of its pivot axis in the longitudinal direction of the hook member.
The locking end 20a of the hook portion is located, and the locking portion 21a of the receiving fitting 21 may be locked and locked at a distance W slightly before the locking end 20a.

In order to prevent unauthorized unlocking, various types of unlocking mechanisms have been recently adopted in this type of game machine locking device. For example, as shown in FIG.
0 is provided with a projection 23a on a part of the support plate 23 on the back side, and when the front frame to which the locking device is fixed is lifted upward with respect to the main body frame to which the receiving bracket 21 is fixed, the projection 23a is A stopper 21a of the receiving member 21 prevents the movement of the receiving member 21. Further, although not shown, a supporting roller is pivotally supported on a supporting plate of the base frame body. When placed on the receiver and the front frame is pushed down against the body frame, it blocks downward movement,
Devices for preventing unauthorized unlocking have been developed.

However, even if the front frame of the game machine is forcibly opened by using a tool, the hook member 20 is turned in the unlocking direction against the urging force of the coil spring. The rotating force F acts, and the locking device on the front frame may be forcibly opened.

The present invention has been made in view of the above points, and has as its object to provide a locking device that can prevent unauthorized unlocking when forcibly opening the front frame of a game machine. I do.

[0009]

In order to achieve the above object, the present invention provides a locking device for a locking device, wherein a hook-like hook member can be tilted via a pivot at an upper portion and a lower portion of a vertically long base frame. The upper and lower hook members are pivotally supported and connected by a connecting rod slidably disposed in the base frame, and a cam plate is fixed to a lock shaft of a cylinder lock provided at an intermediate portion of the base frame, and the cam plate is Are arranged so as to be able to engage with a part of the connecting rod, and the hook member is locked by a locking portion of a receiving bracket attached to the main body frame side of the game machine to lock the game machine. A hook-shaped hook recess is provided to be locked to the locking portion of the receiving member, and a locking end of an inner end of the hook recess extends through the center of the pivot axis of the hook member and extends in the longitudinal direction of the hook member. It is characterized in that it is formed so as to be located inside the hook member (back side) from the line.

Here, at the time of locking, it is best that the locking portion of the receiving fitting penetrates and locks until it comes into contact with the locking end of the hook concave portion of the hook member. If it has penetrated, a good locked state can be obtained.

[0011]

When the front frame (front door) on which the locking device is mounted is closed with respect to the main body frame (cabinet) on which the receiving metal fitting is mounted, the tip inclined portions of the upper and lower hook members of the locking device are locked. When the tip of the hook exceeds the locking portion, it returns to the horizontal position by the urging force of the coil spring, and the hook concave portion is locked by the locking portion. Becomes

At this time, the locking portion of the receiving fitting penetrates deep into the hook concave portion of the hook member, and its end abuts on the locking end.
The hook member penetrates to a position where the center line passing through the pivot axis intersects with the locking portion and is locked. Therefore, in this locked state,
When a force for forcibly opening the front frame is applied, a force for substantially prying is generated at an intersection between the center line of the hook member and the locking portion. The intersection is in the locking portion, and the locking end of the hook recess is located inside the hook recess (rear side) from the center line. It does not cause it.

Further, since the hook concave portion of the hook member is formed deep inside and the locking end portion is located inside the center line of the hook member, the locking portion of the receiving member is deeply formed in the hook concave portion of the hook member. The engaging portion is locked, and the frictional resistance of the contact portion between the locking portion and the hook member is sufficiently large, so that the locked state can be reliably maintained.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a left side view of a locking device used in a game machine such as a slot machine, and FIG. 2 is a rear view thereof. This locking device has a vertically long base frame 1 in which a mounting plate 2 and a support plate 3 are formed into an L-shaped cross section. Hook members 5 and 6 are provided at the upper and lower portions of the support plate 3 with their ends pivoted. Pivotally supported via both 7 and 8 and both hook members 5 and 6
Is connected to a connecting rod 4 slidably disposed in the base frame 1.
Is connected via the connecting pins 5a and 6a.

FIG. 4 is an enlarged view showing details of the hook member 5 and its locked state. Since the upper and lower hook members 5 and 6 have the same shape and are supported by the pivots 7 and 8 in the same state, only the hook member 5 will be described, and the structure and structure of the hook member 6 will be described.
The operation is the same as that of the hook member 5, so that the description thereof is omitted. As shown in FIG. 4, the hook member 5 has a hook recess 5 c formed deeper than before, and the hook member 5 has a hook recess 5 c of the hook member 5 with respect to a center line L passing through the center O of the pivot 7 along the longitudinal direction. The end locking end 5b is formed to enter inside (the back side of the hook member) by a distance A. The hook recess 5c of the hook member 5 extends from the center line L to the inside of the hook member 5.

The distance A is, for example, a distance B from the axis center O of the hook member 5 to the upper end of the hook concave portion, that is, the hook engaging portion, and a distance C from the tip of the hook concave portion 5c to the center line L of 7 mm. , Is set to 2 mm, the ratio B / A of the distance B and the distance A is 10, and the ratio C / A of the distance C and the distance A is 3.5.
It has become. The hook members 5 and 6 have the same shape,
Since they are pivotally supported in the same state, the hook member 6 is the same as the hook member 5 described above.

As shown in FIGS. 1 and 2, the connecting rod 4 is slidably supported by four cut and raised portions 3a formed by cutting and raising a part of the support plate 3 inward. The range of movement of the connecting rod 4, that is, the range of tilting (turning) of the hook members 5, 6 is set by the contact between the cut-and-raised portion 3a and the step provided on the connecting rod 4. A wide portion is provided in the lower part of the center of the mounting plate 2 of the base frame body 1, and the cylinder lock 10 is mounted thereon in a form protruding to the front.

The cylinder lock 10 is formed to be long and has a flange portion 10a at a distal end. The cylinder lock 10 is inserted from the inside into a hole formed in the mounting plate 2, and the flange portion 10a is screwed inside the mounting plate 2. It is fixed with and attached. The terminal end of the lock shaft of the cylinder lock 10 projects inward through the flange portion 10a,
A cam plate 9 is fixed to the tip. The cam plate 9 is provided with a first engaging portion and a second engaging portion. When the cam plate 9 rotates counterclockwise in FIG. When the cam plate 9 moves downward in the clockwise direction in FIG. 2, the second engaging portion can engage with a switch operating rod 11 to be described later.

A switch operating rod 11 is slidably disposed between the support plate 3 and the connecting rod 4 under the base frame 1. The switch operating rod 11 is provided with an operating piece 11a protruding to the left side. The operating piece 11a operates a non-contact switch (not shown) in accordance with the movement of the switch operating rod 11. The switch operating rod 11 has a long hole along the sliding direction, and a guide pin 14 attached to a part of the support plate 3 is engaged with the long hole to be slidably supported within a predetermined range. At the same time, it is also supported by the cut and raised portion 3a.

A coil spring 12 is stretched between the switch operating rod 11 and the connecting rod 4 to urge the connecting rod 4 in the locking direction of the hook members 5 and 6 and the switch operating rod 11 in the non-operating direction. are doing. Further, as shown in FIGS.
A projection 3b is provided on a part of the support plate 3 on the back side of the upper and lower hook members 5, 6, and the front frame to which the locking device is fixed is lifted upward with respect to the main body frame to which the receiving bracket 16 is fixed. In this case, the end of the projection 3b is
And prevents movement. A support roller 13 for supporting the front frame is rotatably supported at the lower end of the support plate 3, and when closed, rides on a roller receiver 16 c on the receiving bracket 16 side to support the front frame.

As shown in FIG. 3, the locking device having the above-described structure has a front frame (front door) which is attached to the front of a main frame (cabinet) 18 of a game machine via a hinge so as to be openable and closable.
Inside 19, it is fixed vertically via the mounting plate 2, and on the inner edge of the main body frame 18, a receiving bracket 16 is vertically fixed at a position facing the locking device.

As shown in FIG. 3, the receiving bracket 16 is provided on the upper and lower portions of a band body made of a vertically long band-shaped metal plate with the locking portions 1.
6a and 16b are formed to have an L-shaped cross section, and a lower end thereof has a plate-shaped roller receiver 1 having a front edge bent downward.
6c is provided in a form in which the end of the strip-shaped metal is bent substantially horizontally. At the time of closing and locking, the upper and lower hook members 5 and 6 are
In the form of engaging with the locking portions 16a, 16b from below,
The locking device is mounted.

When the front frame 19 on which the locking device is mounted is closed with respect to the main body frame 18 on which the receiving bracket 16 is mounted, the inclined portions of the upper and lower hook members 5 and 6 of the locking device are engaged with the locking portions 16a of the receiving bracket 16. , 16b, the hook recesses 5c, 6c operate so as to return to the horizontal position by the urging force of the coil spring 12 when the tips of the hook recesses 5c, 6c exceed the locking portions 16a, 16b. 5c and 6c are locked by the locking portions 16a and 16b to be in a locked state.

The state at this time will be described with reference to FIG. 4 for the case of the hook member 5. The locking portion 16a penetrates to the end (back) of the hook concave portion 5c, and the end portion is the locking end portion 5b.
, That is, the center line L of the hook member 5 penetrates and locks to a position where the center line L intersects with the locking portion 16a.

Therefore, in the locked state, when a force for forcibly opening the front frame 19 is applied in the left-right horizontal direction in FIG. 4, the hook member 5 is locked with the center line L passing through the center of the pivot 7. At the intersection P intersecting with the portion 16a, a force is substantially generated by prying. The intersection P is located in a part of the locking portion 16a, and the locking end 5b at the end of the hook recess 5c is located inside the hook recess from the center line L. No rotational force is generated for the rotation.

Since the hook recess 5c of the hook member 5 is formed deep inside and the locking end 5b is located inside the center line L, the locking portion 16a of the receiving member 16 is The hook portion 5c is deeply penetrated and locked, and the locking portion 1
The frictional resistance of the contact portion between the hook 6a and the hook member 5 is sufficiently large, and the locked state can be reliably maintained. The locking operation of the hook member 5 is the same as that of the hook member 6 having the same shape.

At the time of locking, the locking portion 16 of the
It is best for the a to enter and be locked until it abuts on the locking end 5b of the hook concave portion 5c of the hook member 5, but if it is inserted inside the center line L, a good locked state is obtained. Is obtained.

Further, when the front frame 19 is forcibly opened, a force may act in the direction of lifting the front frame 19 or in the direction of pushing it down, but the force acts in the direction of pushing the front frame 19 down. In this case, the support roller 13 is pressed against the roller receiver 16c to support the pressing force, and prevents the downward movement of the front frame 19. When a force acts in the direction of lifting the front frame 19, the ends of the protrusions 3 b provided on the support plate 3 on the back side of the upper and lower hook members 5, 6 abut against the locking portions 16 a of the receiving bracket 16. This prevents the front frame from moving upward, thereby also preventing unauthorized unlocking.

On the other hand, when unlocking, a predetermined key is inserted into the cylinder lock 10 and turned to the right.
Is rotated to engage with the connecting rod 4 and slide it downward against the urging force of the coil spring 12, so that the upper and lower hook members 5, 6 tilt downward as shown in FIG. Then, the locking of the receiving metal member 16 with the upper and lower locking portions 16a and 16b is released and unlocked. When the key is turned to the left, the cam plate 9 engages with the switch operating rod 11 and slides it upward to turn on and off a non-contact switch (not shown).

FIG. 6 shows another embodiment. In this embodiment, the hook recess 35c of the hook member 35 is formed deeper than the above embodiment. That is, the receiving member 16 is the same as that of the above embodiment, but the hook member 35 is
c is formed deeper, and with respect to a center line L passing through the center O of the pivot 37 along the longitudinal direction thereof, the locking end portion 35b at the end of the hook concave portion 35c of the hook member 35 is located at a depth A, that is, inside. (The back side of the hook member). The hook recess 35c of the hook member 35 enters inside (the depth of the hook recess 35c) from the center line L.

The distance B from the shaft center O of the hook member 35 to the upper end of the hook concave portion, that is, the hook engaging portion, is 20 mm, and the distance C from the tip of the hook concave portion 35c to the center line L is 7 mm, as in the above embodiment. However, the distance A is set to 4 mm, the ratio B / A between the distance B and the distance A is 5, and the ratio C / C between the distance C and the distance A.
A is 1.75. The hook member 35 of the embodiment shown in FIG.
Also, in the same manner as in the above embodiment, the locking portion of the receiving member penetrates deep into the hook concave portion of the hook member, the end of which contacts the locking end, and the center line passing through the pivot of the hook member is locked. It penetrates to the position where it intersects with the part and is locked.

Therefore, when a force is applied to forcefully open the front frame during locking of the hook member 35, the force at the intersection point where the center line L of the hook member 35 intersects with the locking portion 16a is substantially removed. Although a force is generated, the intersection is in the locking portion 16a, and the locking end of the hook recess 35c is located inside the hook recess 35c (back side) from the center line L. Is not generated, and the frictional resistance of the contact portion between the locking portion 16a and the hook member 35 is sufficiently large, so that the locked state can be reliably maintained.

As the length of the distance A becomes longer, when the hook member 35 is locked by the locking portion 16a of the receiving bracket 16,
Alternatively, when releasing the lock, the center line L in the hook concave portion 35c is used.
Since the frictional resistance at the time of rotation of the intersection point P increases, the size of the usable distance A is limited. However, according to the experiment, in the hook members 5 and 35 of the above embodiment, Can rotate between locking and unlocking satisfactorily, and distance C and distance A
When the ratio C / A becomes 1.00 or less, the frictional resistance increases.
Good locking and unlocking operations become difficult.

[0034]

As described above, according to the locking device of the present invention, the locking end of the hook concave portion of the hook member to be locked by the locking portion of the receiving member is located at the center of the pivot of the hook member. Since it is formed so as to be located inside the hook member from the center line extending along the longitudinal direction of the street hook member, in the locked state, when a force that forcibly opens the front frame is applied, A force due to prying is substantially generated at an intersection point intersecting the center line and the locking portion. However, since the crossing point is within the locking portion and the locking end of the hook concave portion is located inside the hook concave portion from the center line, the prying is performed. The force does not cause a rotating force to rotate the hook member to the unlocking side, and the frictional resistance between the locking portion and the hook member at the time of prying is sufficiently large,
It is possible to prevent urging and unlocking due to prying.

[Brief description of the drawings]

FIG. 1 is a left side view of a locking device according to an embodiment of the present invention.

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

FIG. 3 is a left side view of the receiving fitting and the locking device showing a use state.

FIG. 4 is an enlarged partial side view showing a locked state of a hook member.

FIG. 5 is a left side view of the receiving bracket and the locking device at the time of unlocking.

FIG. 6 is an enlarged partial side view showing a locked state of a hook member of another embodiment.

FIG. 7 is an enlarged partial side view showing a locked state of a hook member in a conventional locking device.

[Explanation of symbols]

 1-Base Frame 4-Connecting Rod 5, 6-Hook Member 5c, 6c-Hook Recess 5b, 6b-Locking End 7, 8-Pivot 9-Cam Plate 16-Receiver 16a, 16b-Locking Part 12 , 13-locking part

Claims (3)

[Claims] 1. A hook-shaped hook member is pivotally supported on an upper portion and a lower portion of a vertically long base frame body via a pivot so that the upper and lower hook members are slidably disposed in the base frame body. A cam plate is fixed to a lock shaft of a cylinder lock provided at an intermediate portion of the base frame body by a connecting rod, the cam plate is arranged to be able to engage with a part of the connecting rod, and the hook member is A locking device for a game machine, which is locked by being locked to a locking portion of a receiving fitting attached to a main body frame side of the game machine, wherein the hook member has a hook-shaped hook which is locked to the locking portion of the receiving fitting. A recess is provided, and the locking end of the inner end of the hook recess is located inside the hook member with respect to a center line extending through the center of the pivot axis of the hook member and extending along the longitudinal direction of the hook member. A locking device for a game machine, wherein the locking device is formed as follows. 2. The game machine according to claim 1, wherein at the time of locking, the locking portion of the receiving fitting is penetrated and locked until it comes into contact with a locking end of a hook recess of the hook member. Locking device. 3. The hook member is pivotally supported by a support plate so as to be able to turn up and down with the hook concave portion facing upward, and a projection is formed on the support plate on the back side of the hook member. In part,
At the time of locking, when a supporting roller mounted on a roller receiver provided on the receiving bracket is pivotally supported, and a front frame fixing the locking device receives an upward force on a main body frame fixing the receiving bracket,
When the end of the projection abuts on the locking portion of the receiving bracket to prevent the front frame from moving upward, and when the front frame receives a downward force with respect to the main body frame, the support roller is a roller. 2. The locking device for a game machine according to claim 1, wherein the locking device prevents the downward movement of the game machine.