JP2911982B2 - Unlocking device for front frame and glass frame in pachinko machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unlocking device for a front frame and a glass frame in a pachinko machine, and more particularly to a pachinko machine for electrically unlocking a front frame and a glass frame. The present invention relates to an unlocking device for a front frame and a glass frame in a machine.

[Conventional technology]

As is well known, in a pachinko machine, a front frame is openably and closably mounted on a front surface of a machine frame, and a glass frame is mounted on a front surface of the front frame so as to be openable and closable. Conventionally, the front frame or the glass frame is opened by inserting a key into a keyhole provided in the front frame and rotating the key. For this reason,
Unauthorized games, such as opening a front frame or a glass frame using a duplicate key and paying out a prize ball or adjusting a nail so that a hit ball can easily win a prize, without depending on a prize ball, have frequently occurred.

Therefore, recently, in order to prevent such illegal play, it has been proposed to unlock the front frame and the glass frame electrically without using a key. (For example,
63-177887).

[Problems to be solved by the invention]

By the way, in the conventional pachinko machine, since the front frame and the glass frame are unlocked by using different electric drive sources, the space is unreasonable and expensive. There is also a problem that the opening operation of the front frame after unlocking is very difficult.

Therefore, as a locking device for a ball game machine which solves such a problem, there is known a locking device described in Japanese Patent Application Laid-Open No. 62-86279. However, in this prior art, although both the front frame and the glass frame can be unlocked by one deceleration motor, the deceleration motor and the unlocking operation member are directly connected by the connection link and the crank. In addition, the assembling work is troublesome or troublesome repair and replacement of parts when trouble occurs. Further, the unlocking operation member is moved from the normal state to the open state by driving the speed reduction motor, and is forcibly returned to the normal state, so that there is a problem that a heavy load is applied to the speed reduction motor. Furthermore, since the unlocking member is moved by changing the rotational motion of the connecting link and the crank into a linear motion, there is a problem that smooth movement is hindered by rattling of the connecting portion.

Therefore, an object of the present invention is to solve the above-described problems, to simplify the structure and facilitate the assembling work, and to minimize the load applied to the motor, and to push the unlocked front frame forward. An object of the present invention is to provide an unlocking device for a front frame and a glass frame in a pachinko machine capable of easily opening the front frame.

[Means for solving the problem]

The present invention mounts a front frame on the front of the machine frame so that it can be freely opened and closed,
A pachinko machine having a glass frame mounted on the front frame so as to be openable and closable, and a locking mechanism for opening the glass frame by pushing down an opening / closing lever, wherein a hook and a glass for locking the front frame are provided inside the machine frame. An operation piece for unlocking the frame is pivotally mounted, and a first interlocking rod linked to the hook piece and a second interlocking rod linked to the operation piece are provided to be vertically movable, and both interlocking rods are moved downward. The lower part of the inside of the machine frame is engaged with a reversible rotary motor and a gear fixed to the output shaft of the reversible rotary motor to perform linear motion in the front and rear direction of the machine frame. A movable rack that pushes the front frame forward is provided. On the upper surfaces of the front and rear portions of the movable rack, a slope is provided, and the lower end of the first interlocking rod is brought into contact with one of the slopes, and the other slope is provided. Contact the lower ends of the second interlocking rods Wherein the front frame, in which to face the operating piece above the opening lever provided with a hook piece and engaging disengaging the engaging member.

[Action]

The rotation of the reversible motor in one direction causes the movable rack to move forward via a gear, and the first interlocking rod slides upward by one slope of the movable rack, thereby engaging with the hook piece. The state of engagement with the member is released. As a result, the front frame can be opened, and the front frame is pushed and opened at the front end of the movable rack.

In addition, the movable rack moves backward through the gear by the reverse rotation of the reversible rotating motor, and the second interlocking rod is slid upward by the other slope of the movable rack, whereby the operation piece is directed downward. To push the open / close lever. Thereby, the locking mechanism is unlocked and the glass frame is opened.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a pachinko machine, and FIG. 2 is a perspective view of the pachinko machine with a front frame opened. The pachinko machine 1 has a front frame 3 mounted on the front of a machine frame 2 so as to be freely opened and closed. A metal frame 4 is attached to the periphery of the window hole of the front frame 3, and a glass frame 5 is mounted on one side of the metal frame 4 so as to be freely opened and closed. A game board mounting frame 6 is fixed to the back surface of the front frame 3, and a game board 7 is positioned on the game board mounting frame 6 and is detachably mounted. A mechanism plate 8 is rotatably mounted on the back of the game board 7.

Rollers 9 and 10 are provided as engaging members on the inner side located on the open side of the front frame 3 and on the upper and lower positions outside the game board mounting frame 6 (see FIG. 2). As shown in FIG. 3, strip-shaped first and second interlocking rods 1 are provided on the inner surface of the machine casing 2.
Reference numerals 1 and 12 are provided to be vertically movable. A metal fitting 13 is fixed to the center and the upper and lower portions of the inner surface of the machine frame 2. Supporting shafts 14 and 15 are formed on the upper and lower metal fittings 13, and the rear ends of the front frame locking hooks 16 and 17 which are engaged with and disengaged from the rollers 9 and 10 are respectively pivoted on the supporting shafts 14 and 15. The intermediate portions of the hook pieces 16 and 17 are pivotally connected to the first interlocking rod 11 via pins 18 and 19, respectively. Guide pins 20 are formed on the center, upper and lower brackets 13 respectively,
The guide pin 20 is fitted into the guide groove 21 of the first interlocking rod 11 and slidably supports the first interlocking rod 11. The first interlocking rod 11 is constantly urged downward by a spring 22.

On the other hand, a rear end of an operation piece 23 for unlocking the glass frame is pivotally connected to an upper position of the second interlocking rod 12 via a pin 24. Is rotatably connected to the bracket 13 via a support shaft 25. Also, the guide pin 26 formed on the center metal fitting 13 and the support shaft 15
The second interlocking rod 12 is inserted into the guide groove 27 of the interlocking rod 12
Is slidably supported.

As shown in FIGS. 3 and 4, a reversible rotating motor 28 for electrically unlocking the front frame 3 or the glass frame 5 is fixed to an inner lower portion of the machine frame 2 via a mounting plate 29, A gear 31 is fixed to the output shaft 30. The gear 31 is meshed with a movable rack 32 slidably supported in the front-rear direction of the machine frame 2 via a mounting plate 29, and transmits the rotation of the reversible motor 28 to the movable rack 32. ing. First and second slopes 33 and 34 are formed on the front and rear of the upper surface of the movable rack 32, and the first interlocking rod 11 is formed on the first slope 33.
The lower end of the second slope 34
The lower end of the second interlocking rod 12 is contacted via a roller 36.

Three through holes 37a, 37b, 37c are formed in the side surface of the gear 31. A U-shaped photo sensor 38 having a built-in light emitting element and a light receiving element is fixed to the mounting plate 29 in association with each of the through holes 37a to 37c. The position of the photo sensor 38 is selected such that the light from the light projecting element passes through the respective through holes 37a to 37c and enters the light receiving element. The through-hole 37a is used to instruct the reversing motor 28 to stop, and the through-hole 27b
And 27c are used to command the rotation of the reversible rotary motor 28 to rotate in the reverse direction.

A lock mechanism 39 is provided on the inner side of the front frame 3 on the open side, in association with the protruding piece 11a formed substantially at the intermediate portion of the first interlocking rod 11 and the operation piece 23 of the second interlocking rod 12. Can be The locking mechanism 39 includes a support plate 40 fixed to the back surface of the front frame 3 as shown in FIGS.
A vertical piece 40 formed on one side edge of the support plate 40
The front frame unlocking rod 41 and the glass frame unlocking rod 42 are provided in a in a state where they are superimposed one on the other, and the respective guide grooves 41a,
A guide pin 43 is inserted into 42a and is held slidably up and down. Then, the front frame unlocking rod 41 and the glass frame unlocking rod
The springs 44 urge the front frame unlocking rod 41 downward and the glass frame unlocking rod 42 upward. An engaging piece 45 and a receiving piece 46 are formed at the rear side edge and lower end of the front frame unlocking rod 41 by bending, respectively, and a projecting piece of the first interlocking rod 11 is provided above the receiving piece 46 at the lower end. 11a is positioned to be abutable. Glass frame unlocking rod 42
Engaging pieces 47 and 48 are formed by bending at the front edge portions, and a receiving piece 49 is formed at the lower end by bending. One engaging piece 48 is positioned above the opening and closing lever 50 of the glass frame 5 so that the opening / closing lever 50 can be pressed down. The operating piece 23 of the second interlocking rod 12 is in contact with the upper surface of the receiving piece 49. It is located in. Thereby, the second interlocking rod 12
Is always urged downward by the spring 44 via the receiving piece 49. The opening / closing lever 50 releases the glass frame 5 by being disengaged from a fixing claw (not shown) projecting from the glass frame 5 and a locking piece for locking the glass frame 5 by being pushed downward. is there.

On the other hand, a cylinder lock 51 exposed on the front surface of the front frame 3 is fixed to the support plate 40 of the locking mechanism 39. This cylinder lock 51 is, for example, when the pachinko machine 1 is installed or when a power failure occurs,
Further, it is used for unlocking the front frame 3 or the glass frame 5 using a key when the power supply to the pachinko machine 1 is stopped, such as after closing the store. The cylinder lock 51 has a pin 52
Are rotatably supported. The lock shaft 52 protrudes rearward of the support plate 40, and a cam plate 53 is fixed to a protruding end thereof. The cam plate 53 is provided with engaging projections 54 and 55 on the front and rear surfaces thereof, which are shifted from each other, and one of the engaging projections 54 can engage with the lower surface of the engaging piece 45 of the front frame unlocking rod 41. And the other engagement projection 55 is positioned so as to be able to engage with the upper surface of the engagement piece 47 of the glass frame unlocking rod 42.

Next, a case where the front frame 3 or the glass frame 5 is electrically unlocked in the above configuration will be described. When the front frame 3 or the glass frame 5 is electrically unlocked, for example, it is performed based on an unlock command signal from a command room of a game arcade. That is,
When the unlocking command signal for the front frame 3 is sent, the reversible rotary motor 28 rotates in one direction and the gear 31 via the output shaft 30.
Rotates in the direction of the arrow in FIG. 5, and the rotation of the gear 31 causes the movable rack 32 meshing with the gear 31 to slide rightward as shown by the chain line in FIG. As the movable rack 32 slides, the first interlocking rod 11 which comes into contact with the first slope portion 33 is moved upward as shown by a chain line in the figure, and accordingly, the hook pieces 16 and 17 and the rollers 9 and 10 are moved. Release the engaged state. As a result, the front frame 3 is unlocked and, at the same time, the front frame 3 is pushed by the front end of the movable rack 32, and the front frame 3 is opened as shown by the chain line in FIG.

When the movable rack 32 almost reaches the end, light from the light emitting element of the photo sensor 38 enters the light receiving element via the through hole 37b of the gear 31, and sends a signal for rotating the reversible rotary motor 28 in the reverse direction. Accordingly, the reversible motor 28 rotates in the reverse direction, and the movable rack 32 slides to the left to reach the original position shown by the solid line in FIG. The light enters the light receiving element via 37a, and the reversible rotating motor 28 is stopped. At the same time, the first interlocking rod 11 is lowered to the original position by the bias of the spring 22, and the hook pieces 16, 17
And the rollers 9 and 10 can be engaged.

On the other hand, when the unlock command signal of the glass frame 5 is sent in the state of the solid line in FIG. 6, the reversible rotating motor 28 rotates in the direction opposite to that at the time of unlocking the front frame and outputs via the output shaft 30 thereof. The gear 31 rotates in the direction of the arrow in FIG. 6, and the movable rack 32 slides to the left as shown by the chain line in FIG. This movable rack
The second interlocking rod 12 which comes into contact with the second slope portion 34 by the leftward sliding of the 32 moves upward as indicated by a chain line in FIG.
The pivot 23 pivots downward with the pin 24 as a fulcrum, and pushes down the receiving piece 49 of the glass frame unlocking rod 42 of the locking mechanism 39 (see the chain line in FIG. 9). Thus, the engagement piece 48 of the glass frame unlocking rod 42 pushes the opening / closing lever 50 downward, and the glass frame 5 is unlocked. Then, when light from the light emitting element of the photo sensor 38 enters the light receiving element through the through hole 37c of the gear 31, a signal for rotating the reversible rotating motor 28 in the reverse direction is sent, and the signal causes the reversible rotating motor 28 to rotate in the reverse direction. The movable rack 32 is the sixth
When the original position shown by the solid line is reached, the reversible rotary motor 28 is stopped. At the same time, the second interlocking rod 12 is lowered to the original position by the bias of the spring 44, and the pressing down of the glass frame unlocking rod 42 is released.

When the front frame 3 is unlocked using a key, the key is inserted into the cylinder lock 51 and turned in the direction of the arrow in FIG.
The rotation of the cam plate 53 rotates. Then, by the rotation of the cam plate 53, one engagement protrusion 54 engages with the engagement piece 45 of the front frame unlocking rod 41, and pushes up the front frame unlocking rod 41 upward as shown by a chain line in the figure, At the same time, the projecting piece 11a of the first interlocking rod 11 is pushed upward by the receiving piece 46 so that the first interlocking rod 1
1 is moved up. As a result, the engagement between the hook pieces 16, 17 and the rollers 9, 10 is released, and the front frame 3 can be opened.

When the key is turned in the direction of the arrow in FIG. 9, the other engagement projection 55 of the cam plate 53 engages with the engagement piece 47 of the glass frame unlocking rod 42, and the glass frame unlocking rod 42 is The opening / closing lever 50 is pushed down by the engagement piece 48 at the same time. Thereby, the glass frame 5 is opened.

In addition, a shutter mechanism 56 is provided on the front surface of the front frame 3 in relation to the cylinder lock 51. The shutter mechanism 56 is for preventing the use of a key for an unauthorized purpose. Specifically, as shown in FIGS. 10 and 11, a support plate 57 which is screwed to the front surface of the front frame 3 is provided. Support plate 57
Has a plurality of mounting holes 58 and a circular hole facing the front of the cylinder lock 51.
59 and an opening 60 are drilled. Supporting pieces 61 are formed on both upper sides of the support plate 57. A vertically long hole 62 is formed in the support piece 61. A microswitch 63 is mounted on the front surface of the support plate 57 and above the opening 60. Also the support plate
A cover member 64 is attached to the front surface of 57. The lid member 64 is formed in a box shape with an open rear surface, and protrusions 65
Is formed. The projection 65 is fitted to the vertically long hole 62 and is supported on the front surface of the support plate 57 so as to be openable and closable. The lower side of the lid member 64 is formed to be long so as to face a concave portion 66 formed on the front surface of the front frame 3, and an engagement hole 67 is formed in a portion located in the concave portion 66. A projecting piece 68 is formed on the lower side of the lid member 64 and protrudes downward and is engaged with the inner surface of the lower edge of the opening 60. A solenoid 69 is mounted in the recess 66.

The engagement hole 67 of the lid member 64 is a plunger of the solenoid 69 when the lid member 64 is closed as shown by the solid line in FIG.
The position is chosen to correspond above 70. The length of the projecting piece 68 of the lid member 64 is selected to be slightly shorter than the length of the opening 60 in the vertical direction. Therefore, to open the lid member 64,
68 is reached by lifting it to a position off the lower edge of opening 60. A cam step 72 is formed on the inner surface of the lid member 64 so that when the lid member 64 is lifted, the actuator 71 of the microswitch 63 is pressed and turned on. The microswitch 63 is turned on only when the front frame 3 can be unlocked by driving the reversible motor 28 to excite the solenoid 69.

When the power to the reversible rotary motor 28 is turned on, when the lid member 64 is lifted upward, the cam mechanism 72 causes the actuator 71 of the microswitch 63 to operate.
Is pressed and turned on, the solenoid 69 is excited at the same time, and the plunger 70 projects upward as shown by the chain line in FIG. This locks the cover member 64 so that the cover member 64 cannot be opened, and can completely prevent the use of a key for an unauthorized purpose.

〔The invention's effect〕

As described above, according to the present invention, the first and second interlocking rods for unlocking the front frame and the glass frame, the reversible rotary motor and the movable rack for vertically moving the first and second interlocking rods are provided. Are separated from each other and provided inside the machine frame, and the linear frame of the movable rack moves the first and second interlocking rods up and down on the slope to open the front frame or the glass frame. ,
The assembling work can be easily performed, and the front frame or the glass frame can be unlocked smoothly without difficulty.

Also, an engaging member is provided on the front frame, and upper and lower hook pieces for engaging the engaging member and locking the front frame are provided on the machine frame side, and the engaging member and the hook piece are connected to the first interlocking rod. Since the front frame is locked or unlocked by vertical movement, the structure is simpler than the conventional front frame locking device, the number of parts can be reduced, and the cost is drastically reduced. Can be lowered.

Further, the first interlocking rod is moved upward by sliding the movable rack in the front-rear direction to unlock the front frame, and the front frame is pushed forward at the front end of the movable rack to be automatically opened. As a result, the front frame can be easily and largely opened, and the opening operation of the front frame becomes easy.

[Brief description of the drawings]

1 is a front view of a pachinko machine, FIG. 2 is a perspective view of the pachinko machine with a front frame opened, and FIG. 3 is an inside view of the pachinko machine. FIG. 4 is a perspective view of a reversible rotary motor portion, FIGS. 5 and 6 are operation explanatory views, FIG. 7 is an exploded perspective view of a locking mechanism, and FIGS. 8 and 9 are locking views. FIG. 10 is a perspective view of the mechanism, FIG. 10 is an exploded perspective view of the shutter mechanism part, and FIG. 11 is a sectional view of the shutter mechanism part. 1 ... Pachinko machine, 2 ... Machine frame, 3 ... Front frame, 5 ...
Glass frame, 9,10 ... Roller (engaging member), 11 ... First
, The second interlocking rod, 16, 17 ... the hook piece, 2
2 ... Spring, 23 ... Operation piece, 28 ... Reversible rotating motor, 3
0 ... output shaft, 31 ... gear, 32 ... movable rack, 33 ...
First slope portion, 34... Second slope portion, 39... Locking mechanism,
44 ... Spring, 50 ... Open / close lever.

Claims (1)

(57) [Claims] 1. A front frame is attached to the front of a machine frame so as to be freely opened and closed.
A pachinko machine having a glass frame mounted on the front frame so as to be openable and closable, and a locking mechanism for opening the glass frame by pushing down an opening / closing lever, wherein a hook and a glass for locking the front frame are provided inside the machine frame. An operation piece for unlocking the frame is pivotally mounted, and a first interlocking rod linked to the hook piece and a second interlocking rod linked to the operation piece are provided to be vertically movable, and both interlocking rods are moved downward. The lower part of the inside of the machine frame is engaged with a reversible rotary motor and a gear fixed to the output shaft of the reversible rotary motor to perform linear motion in the front and rear direction of the machine frame. A movable rack that pushes the front frame forward is provided. On the upper surfaces of the front and rear portions of the movable rack, a slope is provided, and the lower end of the first interlocking rod is brought into contact with one of the slopes, and the other slope is provided. Contact the lower ends of the second interlocking rods An unlocking device for a front frame and a glass frame in a pachinko machine, wherein an engagement member for engaging and disengaging a hook piece is provided on the front frame, and an operation piece is exposed above an opening / closing lever.