JP3767929B2 - Lock mechanism and ball game machine for a ball game machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lock mechanism for a ball game machine and a ball game machine.
[0002]
[Prior art]
For example, a ball game machine such as a pachinko machine normally has a structure as shown in FIG. The bullet ball game machine 10 shown in FIG. 1 includes a main body frame 12 that is an outer shell of the ball ball game machine 10 and is also a member for attaching the ball ball game machine 10 to the game machine installation island. A pair of upper and lower hinges 16, 18 are attached to the longitudinal side 14 on the shaft side of the main body frame 12, and the front frame 20 is pivotally supported by these hinges 16, 18.
[0003]
The front frame 20 can be opened and closed with respect to the main body frame 12 with the hinges 16 and 18 as axes, and is normally in a closed state joined to the main body frame 12 as shown in the figure. A locking device 22 is provided for maintaining the joined state and enabling the front frame 20 to be opened, for example, for internal inspection.
[0004]
As the locking device 22, for example, a structure described in Japanese Utility Model Laid-Open No. 6-75574 has been adopted.
The locking device having the structure described in Japanese Utility Model Laid-Open No. 6-75574 has a structure in which the front frame is locked by the engagement between the flange member arranged on the front frame side and the fixing bracket arranged on the main body frame side. It was.
[0005]
For this reason, the eaves member and the fixing bracket are required to be able to withstand a strong external force, for example, trying to pry the front frame open for fraud, and are made of a steel plate having a plate thickness exceeding 2 mm. It was. In addition, a strong ridge for urging the hook member in the locking direction has been used.
[0006]
[Problems to be solved by the invention]
However, since the ridges are strong, the force generated between the fixture and the heel member during locking (force in the direction to push down the heel member) was also large. For this reason, the eaves member and the fixing bracket are engaged with each other, and there are cases where locking cannot be performed. In addition, although it is made to be strong, the hook member and the fixing bracket may be deformed due to long-term use, and may not be locked normally.
[0007]
The object of the present invention is to prevent such inability to lock.
[0008]
[Means for Solving the Problems]
As means for solving the above problems, the invention of claim 1 can be adopted. This lock mechanism for a ball game machine includes an oscillating body attached to a first member, an urging member, and a stopper fixed to the second member.
[0009]
The oscillating body includes a rotation center portion that is rotatably held by a shaft erected on the first member, a contact end portion that oscillates and displaces from the lock side to the release side about the axis, A contact edge provided from the contact end toward the rotation center on the lock side of the contact end, and when the contact end is displaced to the lock side, the rotation center The contact edge portion is located higher than the contact end portion, and the contact edge portion is inclined higher on the rotation center portion side and lower on the contact end portion side, and when the first member and the second member are in the detached state, the rotation center is the second. And the abutting end is on the side farther from the second member. The urging member urges the oscillating body toward the lock side, and when an external force other than this urging force is not exerted on the oscillating body, the oscillating body is positioned at the position displaced to the lock side. The stopper includes a push-up protrusion, a contact surface formed behind the push-up protrusion, and a recessed portion including a horizontal portion connected to the contact surface .
When the swinging body and the stopper are brought close to each other in order to bring the first member and the second member into a joined state, the swinging body starts from the rotation center portion side. Forwardly moving from the push-up protrusion side toward the recessed portion side, and after the shaft standing on the first member passes above the push-up protrusion, the contact edge comes into contact with the push-up protrusion, With the contact, the push-up projection swings and displaces the rocking body toward the release side against the biasing force of the biasing member, and the contact end portion causes the push-up protrusion to move by the forward movement of the rocking body. When the oscillating body is displaced to the lock side by the urging force of the urging member, the contact end is received in the recessed portion, but the oscillating body has not yet reached the displacement limit on the lock side. Without the recess When the rocking body is moved backward after the contact end is received, the contact surface is brought into contact with the contact end to prevent the backward movement and prevent the rocking body from moving backward. The reaction force generated between the abutting surface and the abutting end acts as a force for rotating the oscillating body toward the lock side. However, the abutting end of the oscillating body rotates in this direction. There is a relationship in which the contact surface or the horizontal portion is blocked by contact.
[0010]
In this lock mechanism, when the first member and the second member that are in the disengaged state are relatively approached so as to be in the joined state, the swinging body has the rotation center side as the head and the contact end as the tail. Relative movement (advance movement) from the push-up projection side toward the recessed portion side. With this forward movement, the contact edge comes into contact with the push-up projection, so that the rocking body is rocked and displaced to the release side against the biasing force by the biasing member. When the contact end moves over the push-up protrusion by continuing the forward movement, the oscillating body is displaced to the lock side by the urging force of the urging member, and the recessed portion receives the contact end and enters the locked state.
[0011]
Concave contact end portion is received by the rearward movement of the oscillator after the locked state to the unit when the cause (a first member leaving the second member) abutment surface against the abutment end portion In contact with it, the backward movement is prevented, the backward movement of the rocking body is prevented, and the locked state is maintained.
That is, the force acting to maintain the locked state is a force in a direction in which the contact surface and the contact end portion are pressed against each other. Therefore, the lock can be maintained even if the contact surface and the contact end are not in precise contact. For this reason, even if there is a slight deformation in long-term use, locking is not impossible.
[0012]
Further, the urging force by the urging member is necessary only for urging the oscillating body toward the lock side, and is not used for maintaining the locked state, so it does not need to be strong. Therefore, the force acting when the push-up protrusion swings and displaces the rocking body to the release side is also small, and there is no problem that either of them is deformed by the friction between the push-up protrusion and the rocking body.
[0013]
Therefore, there is no possibility that the lock mechanism cannot be locked.
According to a second aspect of the present invention, the main body frame is the second member according to the first aspect, and the stopper according to the first aspect is provided on the inner side of the vertical side on the open / close side opposite to the vertical side on the shaft side of the main body frame. The front frame is used as the first member according to claim 1, and the rocking body is attached at a position where the front frame is aligned with the stopper when the front frame is joined to the main body frame, and the lock mechanism according to claim 1 is provided. As a result, it is possible to avoid being locked when the front frame is joined to the main body frame.
[0014]
In the ball game machine according to claim 3, the swinging body is displaced to the release side against the biasing force of the biasing member, so that the contact end is separated from the contact surface, and the swinging body Since the unlocking means for enabling the backward movement is provided, the front frame can be opened by operating the unlocking means. Thus, for example, a store clerk at a game store can open and close the front frame when desired.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described by way of specific examples.
[0016]
【Concrete example】
This example is an example in which a lock mechanism is provided in the ball game machine shown in FIG. Since the external configuration of the ball game machine 10 is as described in the prior art, the description thereof is omitted here.
[0017]
As shown in FIG. 2, a shaft pin 34 is erected on the side surface 30 on the open / close side of the front frame 20 on the back surface 32 side, and an L-shaped rocking body 36 is attached via the shaft pin 34. Yes. Specifically, the shaft pin 34 passes through a rotation center portion 38 corresponding to a corner portion of the rocking body 36, and the rocking body 36 rotates clockwise (release side) and counterclockwise ( It can swing to the lock side.
[0018]
The plastic rocking body 36 extends from the rotation center 38 along a direction substantially perpendicular to the lock bar 42 and a plate-like lock bar 42 extending from the rotation center 38 toward the front surface 40 of the front frame 20. An operation bar 44 is included. The contact end 46 of the lock bar 42 has an arcuate shape, and an elongated hole 48 is provided inside the lock bar 42 so as to penetrate the lock bar 42. Further, the upper and lower edges of the lock bar 42 are linear, and the lower edge is a contact edge portion 49.
[0019]
An engagement pin 52 fixed to a steel plate elevating piece 50 passes through the long hole 48 of the lock bar 42, and the engagement pin 52 can move freely in the long hole 48. The lifting piece 50 is provided with a spring hooking protrusion 54, an unlocking protrusion 56, and a guide hole 57.
[0020]
One end of an extended coil spring 58 is connected to the protrusion 54, and the other end of the coil spring 58 is connected to a pin 60 erected on the side surface 30 of the front frame 20. Therefore, the coil spring 58 urges the elevating piece 50 toward the pin 60 and urges the rocking body 36 toward the lock side via the elevating piece 50.
[0021]
A guide pin 62 erected on the side surface 30 of the front frame 20 passes through the guide hole 57, and the elevating piece 50 guides from a lowered position (shown position) where the guide pin 62 becomes the upper end of the guide hole 57. The pin 62 can be displaced up and down between the raised position where it becomes the lower end of the guide hole 57. Therefore, the oscillating body 36 can also be oscillated and displaced within a range corresponding to the elevating range of the elevating piece 50.
[0022]
The protrusion 56 extends in a direction perpendicular to the paper surface in the drawing, and a lock (not shown) is inserted into the key hole 22a of the locking device 22 shown in FIG. It is possible to push up and push up the entire lifting piece 50 to the raised position side. At that time, the rocking body 36 is rocked and displaced to the release side.
[0023]
For example, the swinging body 36 can be swung by placing a finger on the operation bar 44 and applying a force.
The above is the structure of the lock mechanism on the front frame 20 side. Next, the structure of the lock mechanism on the main body frame 12 side will be described.
[0024]
As shown in FIG. 3, a push-up protrusion 74 is provided on the inner surface 72 of the vertical side 70 on the opening / closing side of the main body frame 12 at a portion slightly entering the back surface 70b side from the front surface 70a side. A contact surface 76 is formed behind the push-up protrusion 74 as an inclined surface that falls from the front surface 70a side to the back surface 70b side. A substantially horizontal horizontal portion 78 is connected to the contact surface 76, and the other end of the horizontal portion 78 is connected to an inclined portion 80 that rises toward the back surface 70b. A recessed portion 82 is formed by the contact surface 76, the horizontal portion 78, and the inclined portion 80. A stopper 84 is formed by the push-up protrusion 74, the contact surface 76, the horizontal portion 78, and the inclined portion 80.
[0025]
The vertical side 70 of the main body frame 12 is made of plastic, and the stopper 84 portion protrudes from the periphery along the direction perpendicular to the paper surface of FIG. 3, and a step is formed between the periphery.
Next, the operation of the locking mechanism will be described with reference to FIGS.
First, the case where the front frame 20 is joined to the main body frame 12 and the ball game machine 10 is in a closed state will be described.
[0026]
When the front frame 20 is brought close to the main body frame 12, the contact edge 49 of the rocking body 36 contacts the push-up protrusion 74 of the stopper 84 as shown in FIG. 4.
When the front frame 20 continues to advance, the lock bar 42 is pushed up against the urging force of the coil spring 58 by the push-up projection 74 as shown in FIGS. Oscillating displacement.
[0027]
When the front frame 20 is further advanced, the lock bar 42 eventually rises over the protrusion 74. Then, the lock bar 42 is pulled to the lock side by the urging force of the coil spring 58 and falls into the recessed portion 82 as shown in FIG.
At this time, the contact end 46 of the lock bar 42 is in contact with the contact surface 76 of the stopper 84. For this reason, the displacement in the direction in which the front frame 20 and the main body frame 12 are separated is prevented, and the ball game machine 10 is closed.
[0028]
In the state shown in FIG. 7, for example, when an external force is applied to the front frame 20 to retreat it, the lock bar 42 that is in contact with the contact surface 76 at the contact end 46 is locked. A force is applied in a direction to displace the bar 42 toward the lock side. Therefore, the lock mechanism is locked more and more firmly, and the front frame 20 cannot be opened.
[0029]
Next, two methods for opening the front frame 20 will be described.
The first method uses a key.
When a key (not shown) is inserted into the key hole 22a of the locking device 22 shown in FIG. 1 and rotated, the protrusion 56 is pushed up by an unlocking piece (not shown). Thereby, the elevating piece 50 is pushed up to the raised position side, and the rocking body 36 is rocked and displaced to the release side. Then, the lock bar 42 is set to the release side with respect to the push-up protrusion 74, and the contact end 46 is also separated from the contact surface 76. If the front frame 20 is pulled to the front side in this state, the lock bar 42 reaches above the push-up protrusion 74 (see FIG. 6), and the lock is released. In this state, the key rotation may be restored.
[0030]
When the front frame 20 is further retracted, the rocking body 36 is displaced as shown in FIGS.
The second method is a method using the operation bar 44.
If, for example, a finger is applied to the operation bar 44 and a force is applied to swing the swinging body 36 to the release side, the lock bar 42 is on the release side from the push-up protrusion 74 as described above. Therefore, the front frame 20 may be detached from the main body frame 12.
[0031]
In this way, there are two ways to release the lock, but at the amusement store, the first method is usually used. The second method is suitable for operation from the back side of the ball game machine 10, for example, when the front frame 20 is opened and closed in the assembly process of the ball game machine 10.
[0032]
As described above, in this locking mechanism, after the contact end 46 is received in the recessed portion 82 and is locked, the force acting to maintain the locked state is the contact surface 76 and the contact end 46. It is the force in the direction of pressing. Therefore, the lock can be maintained even if the contact surface 76 and the contact end 46 are not in precise contact. For this reason, even if there is a slight deformation in long-term use, locking is not impossible.
[0033]
Further, the urging force by the coil spring 58 is necessary only for urging the oscillating body 36 toward the lock side, and is not used for maintaining the locked state, so it does not need to be strong. Therefore, the force acting when the push-up protrusion 74 swings and displaces the oscillating body 36 to the release side may be a slight force, and there is no problem that either of them is deformed by the friction between the push-up protrusion 74 and the oscillating body 36.
[0034]
As mentioned above, although embodiment of this invention was described according to the specific example, this invention is not limited to such a specific example, and it cannot be overemphasized that it can implement variously in the range which does not deviate from the summary of this invention.
For example, in the specific example, the vertical side of the main body frame is made of plastic and the stopper is integrally provided. However, the stopper may be a separate component from the vertical side.
[0035]
Moreover, although the coil spring is employ | adopted as an urging member, you may use springs, such as a leaf | plate spring and a torsion coil spring.
[0036]
【The invention's effect】
As described above, according to the lock mechanism of the first aspect, it is possible to prevent the locking from being disabled.
In the bullet ball game machine according to the second aspect, it is possible to avoid being locked when the front frame is joined to the main body frame.
[0037]
According to the bullet ball game machine of the third aspect, for example, a store clerk or the like of a game store can open and close the front frame when desired.
[Brief description of the drawings]
FIG. 1 is a front view of a specific example and a conventional ball game machine.
FIG. 2 is an explanatory diagram of a structure of a rocking body of a lock mechanism of a specific example.
FIG. 3 is an explanatory diagram of a structure of a stopper of a lock mechanism of a specific example.
FIG. 4 is an explanatory diagram of an operation of a lock mechanism of a specific example.
FIG. 5 is an explanatory diagram of an operation of a lock mechanism of a specific example.
FIG. 6 is an explanatory diagram of an operation of a lock mechanism of a specific example.
FIG. 7 is an explanatory diagram of an operation of a lock mechanism of a specific example.
[Explanation of symbols]
10 ... ball game machine, 12 ... body frame, 14 ... vertical side,
16 ... Hinge, 20 ... Front frame, 22 ... Locking device,
22a ... keyhole, 30 ... side, 34 ... shaft pin,
36 ... oscillator, 38 ... rotation center, 42 ... lock bar,
44 ... operation bar, 46 ... contact end, 48 ... oblong hole,
49 ... contact edge, 50 ... lifting piece, 52 ... engagement pin,
54 ... projection, 56 ... projection, 57 ... guide hole,
58 ... Coil spring, 60 ... Pin, 62 ... Guide pin,
70 ... vertical side, 72 ... inner surface, 74 ... push-up protrusion,
76 ... contact surface, 78 ... horizontal part, 80 ... inclined part,
82: recessed portion, 84 ... stopper.

Claims (3)

A locking mechanism for maintaining the first member and the second member that can be joined and detached from each other in a joined state,
A pivot center that is rotatably supported by a shaft standing on the first member, a contact end that swings and displaces on the lock side and the release side about the shaft, and a corresponding contact end A contact edge portion provided from the corresponding contact end portion toward the rotation center portion on the lock side of the portion, and when the contact end portion is displaced to the lock side, the rotation center portion is The contact edge portion is positioned higher than the contact end portion, and the contact edge portion is inclined higher on the rotation center portion side and lower on the contact end portion side, and when the first member and the second member are in the detached state, An oscillating body whose center of rotation is on the second member side and whose abutting end is on the side far from the second member;
The oscillating body is attached to the first member and urges the oscillating body to the lock side, and when an external force other than the urging force is not exerted on the oscillating body, the oscillating body is displaced to the lock side. A biasing member as a position;
A push-up protrusion, and a stopper that is fixed to the second member with a contact surface formed behind the push-up protrusion and a recessed portion including a horizontal portion connected to the contact surface ;
The rocking body and the stopper are:
When bringing the first member and the second member into close contact with each other, the swinging body moves from the push-up projection side toward the recessed portion side with the rotation center portion side as a head. After the forward movement and the shaft erected on the first member passes above the push-up protrusion, the contact edge comes into contact with the push-up protrusion, and the push-up protrusion is in contact with the biasing member in accordance with the contact. It is swung displacing the oscillator to the release side against the urging force by,
When the rocking body continues to move forward, the abutting end portion gets over the push-up protrusion, and when the rocking body is displaced to the lock side by the urging force of the urging member, the abutting end portion is received in the recessed portion. However, the rocking body has not yet reached the displacement limit on the lock side,
When the rocking body is moved backward after the abutting end is received in the recess, the abutting surface comes into contact with the abutting end to prevent the backward movement, and the rocking body moves backward. The reaction force generated between the abutment surface and the abutment end acts as a force for rotating the oscillating body toward the lock side, but the rotation of the oscillating body in this direction is The contact end portion is in contact with the contact surface or the horizontal portion to be blocked.
Lock mechanism for ball game machines. A rectangular main body frame, a front frame that is pivotally supported by a hinge disposed along a longitudinal side of the main body frame on the shaft side, opens and closes, and is joined to and detached from the main body frame, and the main body frame and the front frame And a game board held inside the box-shaped body, and when a winning or the like is established by the behavior of the game ball in the game area formed on the surface of the game board, the game ball is discharged as a prize ball In a ball game machine that
The stopper according to claim 1 is fixed inside the vertical side of the opening and closing side opposite to the vertical side of the shaft side of the main body frame as the second member according to claim 1,
When the front frame is the first member according to claim 1, the swinging body is attached to a position where the front frame is aligned with the stopper when the front frame is joined to the main body frame,
A bullet ball game machine equipped with the lock mechanism according to claim 1. In the ball game machine according to claim 2,
A solution that allows the swinging body to move backward by disengaging the contact end from the contact surface by swinging and displacing the swinging body toward the release side against the biasing force of the biasing member. A bullet ball game machine provided with a locking means.

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