JP2000033164A - Pachinko game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pachinko game machine that detects any opening of its front frame through reliable actuation of an opening detector, is efficient in assembly owing to easy installation of the opening detector and dispenses with secular-change-based readjustments in installation position to the opening detector. SOLUTION: A push-button switch is arranged in a middle plate 33 and near a locking hook 31. The locking hook 31 is made of rigid or hard-to-deform material, so that the engagement of the locking hook 31 with a stop 23 continuously holds unchanged the engagement interval between the place where the locking hook 31 and stop 23 engage and the place on a front frame 3 which faces the stop 23. The opening detection of the front frame 3 based on the engagement interval permits reliable opening detection thereof even upon such distortions of the front frame 3 and the like as results from long-term use of a pachinko machine 1, and also allows the initial installation of the push- button switch in the position where it works reliably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball game machine provided with an open detector for detecting the open / closed state of the front frame mounted on the outer frame so that the front frame can be opened and closed.

[0002]

2. Description of the Related Art Conventionally, a pachinko machine has a front frame to which a game board, a handle, an upper plate and the like are attached, and which is rotatable with respect to an outer frame. The reason for this configuration is that the pachinko ball supplied from the supply path to the pachinko machine can be opened and closed as necessary for clogging of the pachinko balls and other maintenance and inspection. Therefore, usually, the front frame abuts on the outer frame and is fixed by the locking device.

[0003] However, in order to illegally pay out prize balls from the pachinko machine, some players take illegal actions such as opening the front frame and modifying the control circuit or signal lines of the pachinko machine. Someone did. Therefore, as shown in FIG. 11, an opening detector P3 is provided in the pachinko machine for the purpose of monitoring that the front frame P2 is illegally opened.

The open detector P3 is composed of a well-known push button switch. When the button is operated and pushed into the switch body, the built-in contact is opened and the power is cut off. When it returns to the protruding state, the contact is closed and it is configured to energize,
It is installed inside the outer frame P1 so that the button is pushed in when the front frame P2 contacts the outer frame P1.

In a pachinko machine equipped with such an open detector P3, when the front frame P2 is opened, the open detector P3 is opened.
Since the button No. 3 protrudes from the switch body and the contact is closed to energize, it is possible to detect whether or not the front frame P2 has been illegally opened by detecting the energization.

That is, in this pachinko machine, the opening / closing of the front frame P2 is detected based on whether or not the button of the open detector P3 attached to the outer frame P1 comes into contact with the front frame P2 and is pushed into the switch body. It is doing.

[0007]

However, in a conventional pachinko machine provided with such an open detector P3 on the outer frame P1, the open detector P3 is located at a predetermined place during the assembling operation of the pachinko machine. Even if it is mounted, the open detector P3 is reliably operated, for example, the button may not contact the front frame P2 depending on the mounting condition of the front frame P2 and the outer frame P1 of the actually manufactured pachinko machine. I couldn't do that. For this reason, in order to reliably operate the open detector P3, it is necessary to adjust the mounting position of the open detector P3 for each pachinko machine, and there has been a problem that the working efficiency of the assembly is significantly deteriorated.

Further, even if the front frame P2 is repeatedly opened and closed, the front frame P2 or the outer frame P1 itself is distorted, and the front frame P2 is closed with respect to the outer frame P1. In some cases, the button cannot contact the front frame P2, and the opening detector P3 may not operate. In this case, there is a problem that the maintenance work is troublesome, for example, it is necessary to check whether the open detector P3 is operating or to change the mounting position if it is not operating.

Therefore, according to the present invention, the opening detector can be reliably operated to detect the opening of the front frame, and since the installation of the opening detector is simple, the assembling work efficiency is high, and the use of the detector over time can be improved. Another object of the present invention is to provide a ball game machine which does not need to change its mounting position.

[0010]

According to the first aspect of the present invention, there is provided a locking device for locking a front frame which is openably and closably attached to an outer frame of a ball game machine. In a ball game machine including a device and an open detector that detects an open / closed state of the front frame, the locking device is axially fixed to the front frame, and a locking hook whose tip is formed in a hook shape, When engaged with the hook-shaped portion of the locking hook, a high rigidity formed in an L-shape to attach an engaging surface capable of fixing the front frame to the outer frame perpendicular to the outer frame. A stopper piece, and the release detector includes an engagement point at which an engagement surface of the stopper piece and a hook-shaped portion of the locking hook engage, and the front frame is attached to the outer frame. Opposed to the engagement point when locked by locking with a locking device In order to detect at least whether or not the engagement surface exists within an engagement interval that is an interval with the opposing point on the front frame, on or near a straight line connecting the engagement point and the opposing point It is characterized by being provided in.

According to the first aspect of the present invention, the engagement interval is an interval formed by the engagement between the locking hook and the stopper piece. Even if the frame itself or the outer frame itself is distorted, as long as the locking hook and the stopper piece are engaged,
This is an interval that is not easily affected. Therefore, the open detector is
Attachment on or near a straight line connecting the engagement point and the opposing point, and detecting whether or not the engagement surface exists at least within the above-described engagement interval, causes a backlash between the front frame and the outer frame. Even if the front frame or the outer frame itself is distorted, the opening and closing of the front frame can be effectively detected.
That is, the reliability of detecting the opening of the front frame can be significantly improved. Furthermore, the work of adjusting the mounting position of the open detector can be simplified, and the labor for maintenance and inspection can be reduced.

The open detector may be any type such as a magnetic sensor, an optical sensor or a push button switch.
Further, the "near" according to claim 1 is a parallel line parallel to the opening / closing direction of the front frame, a parallel line passing through a point for locking the locking hook, and a point fixing the stopper piece. The range between the point at which the hook is fixed and the parallel line passing through the farthest point. Therefore, for example, the open detector X1 is as shown in FIG.
Open detector X1, locking hook Y1 and stopper piece Z1
When the stopper piece Z1 is fixed with two screws Z9 as shown in the schematic diagram for explaining the positional relationship with the screw, the screw Z9 farthest from the point Y2 of the screw Z9 at which the locking hook Y1 is axially fixed is fixed. It is arranged so as to extend over a portion having a width X formed between a parallel line Z3 passing through the point Z2 and a parallel line Y3 passing through the point Y2 that fixes the locking hook Y1, and detects opening of the front frame. That is, even if the front frame and the outer frame are loosely attached or the front frame itself or the outer frame itself is distorted, the point Y2 supporting the locking hook Y1 is fixed to the front frame, and the stopper The fixing point Z2 for fixing the piece Z1 is fixed to the outer frame. If the locking hook Y1 and the stopper piece Z1 are engaged, Y
The positional relationship between 3 and Z3 does not shift so much, and if the open detector X1 is arranged so as to cover the width X, the opening and closing of the front frame can be effectively detected.

Next, a second aspect of the present invention is the ball game machine according to the first aspect, wherein the open detector is mounted on the front frame. According to the ball game machine of the second aspect, when the open detector is a switch using electricity, the switch can be wired together with the electrical wiring of a plurality of devices installed on the front frame side. Work efficiency is improved as compared with the case where an open detector is attached to the frame side.

According to a third aspect of the present invention, in the ball game machine according to the second aspect, the front frame includes a fitting portion into which the open detector can be fitted.
According to the third aspect of the present invention, there is no need to adjust the mounting position of the open detector even when the ball is used over time or the backlash occurs, so that the fitting portion into which the open detector can be fitted in advance. By installing, when opening a ball game machine, the release detector can be installed on the ball game machine with a simple work just to fit into the fitting part, improving the efficiency of ball game machine assembly I do.

Next, a fourth aspect of the present invention is the second aspect.
3. The ball game machine according to claim 3, wherein the release detector includes a detection unit that detects the release of the front frame by being acted on by the engagement surface. In the opening detector according to the fourth aspect, the opening of the front frame is detected by the opening detector using the engagement surface of the stopper piece which has been conventionally used as a locking device. Since it is not necessary to prepare special parts for performing the operation, the production cost of the ball-and-ball game machine can be suppressed.

According to a fifth aspect of the present invention, in the ball game machine according to the fourth aspect, the opening detector includes, as the detection unit, a button part pressed by the stopper piece. It may be a push button switch. In the ball-ball game machine according to the fifth aspect, by using a known push-button switch as an open detector, the open detection of the front frame can be performed at low cost.

If the open detector is a push button switch, for example, while a pachinko clerk opens the front frame for maintenance of the pachinko machine, a tape is applied to the button in order for a player to perform wrongdoing. If the button portion is fixed in a depressed state by sticking or the like, the push button switch cannot detect that the front frame has been opened thereafter.

In the push button switch, since the button portion contacts the stopper piece to detect the opening and closing of the front frame, the stopper piece strongly hits the push button switch with the force to close the front frame, and the push button switch is pressed. There is a possibility that the opening of the front frame cannot be detected correctly due to damage.

Therefore, the invention described in claim 6 is directed to claim 5
In the above-described ball game machine, the stopper piece includes a protrusion projecting in a direction in which the button is pressed, and the fitting unit includes a cover having an opening through which the protrusion can be inserted, The opening detector is housed so that the button portion can be operated by the projection inserted from the opening.

According to the sixth aspect of the present invention, in the ball-and-ball game machine, the open detector is housed in the cover having the opening, and the button can be operated through the opening only by the protrusion provided on the stopper piece. Thus, the button section cannot be operated from outside.

In the ball game machine having the push button switch housed in the cover portion, the button portion is fixed in a state where the button portion is pressed down, for example, by applying tape to the button portion of the open detector.
Unauthorized acts by the player, such as making it impossible to detect opening of the front frame, can be reliably prevented.

Further, by providing the cover, even if the front frame is closed vigorously, the stopper piece abuts on the cover, and the protrusion inserted from the opening does not depress the button more than necessary. The vessel does not break.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, a pachinko machine will be described as a representative example of a ball game machine. In addition, the present invention is not limited to pachinko machines, but other types of ball game machines such as coin game machines, arranged ball-type pachinko game machines, smart ball game machines, etc., which require the same locking device as the pachinko machine. Also applicable to

First, in the pachinko machine 1 of this embodiment,
A locking device 5 for fixing the front frame 3 to the outer frame 2 and peripheral devices will be described with reference to FIGS. Figure 1 shows a pachinko machine 1
2 is a perspective view showing a state where the locking device 5 is unlocked and the front frame 3 is opened, and FIG. 3 shows a state where the locking hook 31 is engaged with the engagement surface 231 of the stopper piece 23. FIG.

As shown in FIG. 1, the pachinko machine 1 abuts on a front frame 3 formed in a rectangular shape and one surface perpendicular to the thickness direction of the front frame 3, and stands on the edge of the front frame 3. And an outer frame 2 formed in a strip shape. One side of the front frame 3 is rotatably mounted on the outer frame 2 by a pair of hinges 21 and 22, and its free end is fixed to the outer frame 2 by a normal locking device 5 so as to be openable and closable. You.

The locking device 5 has a hook-shaped tip, and is formed with a locking hook 31 and 32 made of a rigid and hard to deform material, and an L-shaped cross section. And stopper pieces 23 and 24 made of a material having high rigidity. Two screw holes are provided on one surface of the stopper pieces 23 and 24 formed in an L-shaped cross section.

The stopper pieces 23 and 24 are provided at a predetermined distance inside the outer frame 2 formed in a belt shape at a predetermined distance without a screw hole (hereinafter referred to as "engagement surfaces 231 and 24").
1 ". ) Is attached to the outer frame 2 with screws through the screw holes so as to stand upright with respect to the outer frame 2.

On the other hand, the locking hooks 31 and 32 are
The front end of the front frame 3 is fixed to the outer frame 2
When it is closed, the hook-shaped tip is attached to a position where it engages with the engaging surfaces 231 and 241 of the stopper pieces 23 and 24. In addition, the outer frame 2 and the front frame 3
Locking hook 31, made of wooden or plastic
The outer frame 2 and the front frame 3
A material having higher rigidity, for example, metal or the like.

Next, the front frame 3 of the pachinko machine 1 is
As shown in FIG. 2, the middle plate 33, which is formed in a rectangular outline and has a substantially rectangular cross section, is attached to the front frame 3 to which the locking hooks 31, 32 are attached. The outer side surface of the middle plate 33 on the free end side is the locking hook 3.
1 and 32.

In the middle plate 33, a hollow portion 35 for accommodating a push button switch 4, which will be described later, is formed near the portion where the locking hook 31 is provided, and the hollow portion 35 communicates with the outside. The communication hole 34 is provided on the upper surface 330 of the middle plate 33.

Further, as shown in FIG. 2, when the locking hook 31 is engaged with the engaging surface 231 at the tip of the engaging surface 231, the stopper piece 23 is inserted into the communication hole 34 to form the hollow portion. A protrusion 25 having a length that can be reached within 35 is provided. The length of the projection 25 is such that the engagement surface 231 is the upper surface 330.
When it comes into contact with the button 4, the tip of the projection 25
1 is set to a length that will not be pressed more than necessary.

As shown in FIG. 3, when the locking hook 31 is engaged with the engaging surface 231, the middle plate 33 and the stopper piece 23
30 and the opposing side surface 232 of the engagement surface 231
Are left open. Next, the configuration inside the hollow portion 35 will be described with reference to FIG.

FIG. 4A is a sectional perspective view of the middle plate 33 where the hollow portion 35 is formed. FIGS. 4B and 4C are the middle plate 33 where the hollow portion 35 is formed. FIG. However, FIG. 4B is a diagram when the push button switch 4 is inserted.

The hollow portion 35 is a hollow space formed in the middle plate 33 as shown in FIG. An elastically deformable engaging piece 36 is formed in the hollow portion 35 in parallel with the inner side surface 332 of the middle plate 33 and integrally with the middle plate 33.
Between them, a fitting portion 350 for holding the push button switch 4 is formed. Further, a hook-shaped portion 361 protruding toward the fitting portion 350 is provided at the tip of the engagement piece 36. The upper surface 330 of the middle plate 33 forming the fitting portion 350 is provided with a communication hole 34 communicating with the outside, and the inner side surface 332 forming the fitting portion 350 is provided.
At the upper part, an engagement block 37 for determining a holding position of the push button switch 4 held in the fitting portion 350 is provided.

In order to install the push button switch 4 in the fitting portion 350 formed in the hollow portion 35, the engaging piece 36 is elastically deformed and the push button switch 4 is pushed into the fitting portion 350. Good. By doing so, the push button switch 4 is fixed between the engagement piece 36 and the inner side surface 332 of the middle plate 33 and between the hook-shaped portion 361 at the tip of the engagement piece 36 and the engagement block 37. The button 41 of the push button switch 4 can be externally operated by the projection 25 through the communication hole 34.

Next, the overall structure of the push button switch 4 will be described with reference to FIG. FIG. 5 is an overall configuration diagram of the push button switch 4. As shown in FIG. 5, the push button switch 4 includes a main body 42 having a convex cross section and a main body 42.
And a button 41 for closing a contact of an electric switch provided inside the main body 42 when pressed in the main body 42, and a direction for pushing the button 41 out of the main body 42, that is, a contact of the switch. And a biasing means (not shown) for biasing the button 41 in a direction to open the switch.

Then, a control unit (not shown) provided on the front frame 3 supplies power to the main body 42 and determines that the front frame 3 is open when the contacts are closed and energized. An electric wire 44 for receiving power supply from the control unit is attached to the side of the projecting portion of the main body 42, and a connector 43 is provided at the other end of the electric wire. Connector 4
Reference numeral 3 is connected to a connector receiver (not shown) provided on the front frame 3 for receiving power supply from the control unit.

Since the control unit is well known, a description of the control method and the like will be omitted. In this embodiment,
When the button 41 is pressed, the push button switch 4 that closes the contact of the electric switch provided on the main body 42 has been described. However, when the button 41 is pressed, the contact of the electric switch provided on the main body 42 is changed. A push button switch that opens may be used. In this case, the control unit supplies power to the main body 42, and determines that the front frame 3 is open when the contacts are opened and no current is supplied.

In the pachinko machine 1 configured as described above, the opening of the front frame 3 is detected by the push button switch 4 as described below with reference to FIGS. FIG.
FIG. 7A is a schematic diagram illustrating an engagement interval, and FIG.
FIG. 7 is a schematic view showing a state immediately before is pressed by the projection 25. FIG.
FIG. 4B is a schematic diagram illustrating a state where the button 41 is pressed by the protrusion 25.

In the present embodiment, as shown in FIG. 6, since the opening of the front frame 3 is detected by the push button switch 4,
The engagement interval α, which is the interval between the engagement surface 231 and the front frame 3 when the locking hook 31 and the engagement surface 231 of the stopper piece 23 are engaged, is used. In the conventional pachinko machine 1, the opening of the front frame 3 may not be effectively detected due to mounting play or the like even if the push button switch 4 is attached as shown in the assembly drawing during the assembly. Work such as adjusting the mounting position was required.

However, in the pachinko machine 1 of this embodiment,
Since the locking hook 31 and the stopper piece 23 are made of a highly rigid and hardly deformable material, the engagement interval α is limited to the play at the time of assembling, the front frame 3 or the outside due to the use of the pachinko machine 1 over time. Even if the frame 2 is distorted, there is no significant change.

Accordingly, as in the pachinko machine 1 of the present embodiment, the push button switch 4 is set on the straight line connecting the engagement point β and the opposite point γ or in the vicinity thereof (“near” means that the front frame 3 is the outer frame 2 Is designed to be attached to the button 41 of the push-button switch 4 when it is closed.) And is assembled, and is the engagement surface 231 within the engagement interval α? If it is determined that the front frame 3 is open even if the mounting play occurs, it is not necessary to adjust the mounting position of the push button switch 4, and the assembly efficiency can be significantly improved.

On the other hand, in the conventional pachinko machine 1, if the front frame 3 or the like is distorted due to aging, the push button switch 4 may not be able to detect the opening of the front frame 3 in some cases. However, in the pachinko machine 1 of this embodiment, the push button switch 4 is mounted on or near a straight line connecting the engagement point β and the opposite point γ, and whether the engagement surface 231 exists within the engagement interval α. By detecting whether or not
Is detected, there is no need to adjust the mounting position of the push button switch 4, and the maintenance work can be reduced.

Therefore, the pachinko machine 1 of this embodiment can greatly improve the reliability of detecting the opening of the front frame 3. Further, since the push button switch 4 is provided on the front frame 3 side, the push button switch 4 can be wired together with the electric wiring of a plurality of devices provided on the front frame 3 side. Therefore, the work efficiency of assembling the pachinko machine 1 is improved.

Further, the push button switch 4 can be installed on the pachinko machine 1 by a simple operation of merely fitting the push button switch 4 into the fitting portion 350 of the hollow portion 35 provided in the middle plate 33. Efficiency is improved.
In this embodiment, the fitting portion 350 of the middle plate 33 is used.
The push button switch 4 is housed in the inside, and the protrusion 25 of the stopper piece 23 is operated through the communication hole 34 so that the push button switch 4 is operated. Unauthorized acts such as making it impossible to detect the opening of 3 can be prevented.

In this embodiment, the middle plate 33
Since the push button switch 4 is housed therein, even if the front frame 3 is closed vigorously, the stopper piece 23 only hits the middle plate 33 and does not directly hit the push button switch 4, and the projection 25 When the stopper piece 23 contacts the upper surface 330 of the middle plate 33, the button 4
Since the button 1 cannot be pushed further into the body 42, the button 41 is not pushed more than necessary. Therefore, damage of the push button switch 4 can be prevented.

The upper surface 330 of the middle plate 33 of this embodiment corresponds to the cover of the present invention. Further, the communication hole 34 of the present embodiment corresponds to the opening of the present invention. Further, the projection 25 of the present embodiment corresponds to the projection of the present invention.
The engagement point β between the locking hook 31 and the engagement surface 231 shown in FIG. 6 of the present embodiment is the “engaging point” of the present invention, and the locking hook 31 on the front frame of the present embodiment is Opposing point γ facing the engaging surface 231 near the installed root portion
Is the “opposing point” of the present invention, and a straight line that is perpendicular to the engaging surface 231 of the present embodiment and that connects the engaging point β and the opposing point γ is the “the engaging point” of the present invention. And a straight line connecting the opposite point.

The communication hole 92 corresponds to the opening of the present invention. Here, in the above embodiment, the middle plate 33
Push button switch 4 in hollow portion 35 formed inside
However, as shown in FIGS. 8 and 9, for example, the middle plate 33 may be formed in a step shape, and the fitting portion 99 may be provided outside. In this case, the fitting portion 99 includes a concave portion 94 formed on the inner side surface 93 of the middle plate 33 and a concave portion 94 formed on the lower step 95 of the middle plate 33 formed in a step-like shape.
Elastically deformable, provided at a position facing
And an engaging piece 80 having a hook-like portion 801 protruding in the direction. The hinge 9 is provided above the recess 94.
Cover portion 90 that is continuous with middle plate 33 through
And a communication hole 92 is provided in the cover 90.

The thus constituted middle plate 33
In order to store the push button switch 4, the engagement piece 80
Is elastically deformed, the push button switch 4 is inserted into the fitting portion 99, and is sandwiched between the concave portion 94 and the engaging piece 80. Then, the cover unit 90 is rotated about the hinge unit 91 as a fulcrum to cover the surface of the push button switch 4 on which the button 41 is provided.

As described above, if the fitting portion 99 is provided outside the middle plate 33, the push button switch 4 can be attached from outside the front frame 3,
The work of attaching the push button switch 4 to the front frame 3 is simplified. Next, as shown in FIG. 10, the engaging surface 231 is disposed behind the inner peripheral surface 29 of the outer frame 2 in the width direction, and the like.
If the engagement interval is long, the holder 3
9, the push button switch 4 may be stored therein.

In this way, when assembling the pachinko machine 1, the push button switch 4 can be installed so that the opening of the front frame 3 can be reliably detected only by pushing the push button switch 4 into the holder 39. As a result, assembly efficiency is improved. Note that the holder 39 may be formed integrally with the middle plate 33.

In the above embodiment, the push button switch 4 is used as the open detector of the present invention.
Any device that can reliably detect the engagement interval, such as an optical sensor, may be used.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of a pachinko machine of the present embodiment.

FIG. 2 is a perspective view showing a positional relationship between an outer frame and a front frame when the locking device of the present embodiment is released.

FIG. 3 is a schematic view showing a state in which a locking hook is engaged with an engagement piece of a stopper piece in the present embodiment.

FIG. 4 is a cross-sectional view for explaining a configuration of a hollow portion according to the present embodiment.

FIG. 5 is a schematic configuration diagram of an open detector according to the present embodiment.

FIG. 6 is a schematic diagram illustrating an engagement interval according to the present embodiment.

FIG. 7 is a schematic configuration diagram illustrating a positional relationship between an open detector and a locking hook according to the present embodiment.

FIG. 8 is a perspective view illustrating a modification of the present embodiment.

FIG. 9 is a cross-sectional view illustrating a modification of the present embodiment.

FIG. 10 is a perspective view illustrating a modification of the present embodiment.

FIG. 11 is a perspective view of a conventional pachinko machine.

FIG. 12 is a schematic diagram illustrating a mounting position of an open detector according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pachinko machine, 2 ... Outer frame, 3 ... Front frame, 4 ... Push button switch, 5 ... Locking device, 21, 22 ... Hinge, 23,
24: stopper piece, 25: protrusion, 29: inner peripheral surface, 31,
32: locking hook, 33: middle plate, 34: communication hole, 35: hollow part, 36: engagement piece, 37: engagement block, 39: holder, 41: button, 42: body, 43 ...
Connector, 44: electric wire, 80: engaging piece, 90: cover portion, 91: hinge portion, 92: communication hole, 93: inner side surface,
94: concave portion, 95: lower stage, 99: fitting portion, 231, 24
DESCRIPTION OF SYMBOLS 1 ... Engaging surface, 232 ... Opposite side surface, 330 ... Top surface, 332
... inner side surface, 350 ... fitting part, 361 ... hook-shaped part, 801
… Hook

Continued on the front page (72) Inventor Makoto Tayu 4-4-2, Arai, Nakano-ku, Tokyo (72) Inventor Hidekatsu Takeuchi 2--14, Nishino-cho, Higashino-cho, Kasugai-shi, Aichi Prefecture (72) Inventor Sojiro Nagai 13-13 Higashi-Osone-cho, Higashi-ku, Nagoya-shi, Aichi, Japan. (72) Inventor Shinji Mukai 13-13, Higashi-Osone-cho, Higashi-ku, Nagoya-shi, Aichi F-term (reference) 2C088 BC45 EA16

Claims (6)

[Claims] 1. A ball game machine comprising: a locking device for locking a front frame openably and closably attached to an outer frame of the ball game machine; and an open detector for detecting an open / closed state of the front frame. The locking device is fixed to the front frame by a shaft, and a tip of the locking device is engaged with a hook formed in a hook shape.
The stopper comprises a high-rigidity stopper piece formed in an L-shape to attach an engaging surface capable of fixing the front frame to the outer frame perpendicularly to the outer frame. The engagement point where the engagement surface and the hook-shaped portion of the locking hook engage, and the engagement point when the front frame is fixed to the outer frame by the locking device and locked. Within the engagement interval, which is the interval between the opposing front frames on the front frame, to detect at least whether or not the engaging surface exists, on a straight line connecting the engagement point and the opposing point or A ball game machine, which is provided in the vicinity thereof. 2. The ball game machine according to claim 1, wherein the open detector is mounted on the front frame. 3. The ball game machine according to claim 2, wherein the front frame includes a fitting portion into which the open detector can be fitted. 4. The ball game machine according to claim 2, wherein the release detector includes a detection unit that detects the release of the front frame by being acted on by the engagement surface. A ball game machine characterized by the following. 5. The bullet game machine according to claim 4, wherein the release detector is a push button switch having a button portion pressed by the stopper piece as the detection unit. Ball game machine. 6. The ball-and-ball game machine according to claim 5, wherein the stopper piece has a convex portion protruding in a direction in which the button portion is pressed, and the fitting portion has an opening into which the convex portion can be inserted. A ball game machine, comprising: a cover portion having a portion, wherein the opening detector is housed so that the button portion can be operated by the projection inserted from the opening.