JPH09122336A - Locking mechanism and pachinko game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent locking mechanism from failing to work in a pachinko game machine. SOLUTION: If a fluctuating member 36 is moved forward, a contact edge part 49 comes into contact with a protrusion 74 for pushing up a stopper 84, and consequently, a locking bar 42 is pushed up, resisting the energizing force of a coil spring. In addition, if the fluctuating member 36 is further moved forward, the locking bar 42 rides over a force protrusion 74 and then is made to fall into a caved part 82 by the energizing force of the coil spring to pull the looking bar 42 to the lock side. The contact end 46 of the locking bar 42 is brought into contact with the contact face 76 of the stopper 84. if an external force is brought to bear upon a front face frame to make it recede, for example, a force to displace the locking bar 42 to the lock side is applied to the locking bar 42 maintained to be in contact with the contact face 76 at the contact end 46. Thus a locking mechanism becomes locked more tightly, so that the front face frame cannot be opened.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lock mechanism and a ball game machine.

[0002]

2. Description of the Related Art A ball game machine such as a pachinko machine normally has a structure as shown in FIG. The ball game machine 10 shown in FIG. 1 includes a main body frame 12 that is an outer shell of the ball game machine 10 and is also a member for attaching the ball game machine 10 to a game machine installation island. A pair of upper and lower hinges 16 and 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 the hinges 16 and 18.

The front frame 20 can be opened and closed with respect to the main body frame 12 about hinges 16 and 18, and is normally in a closed state joined to the main body frame 12 as shown in the drawing. A locking device 22 is provided for holding the joined state and allowing the front frame 20 to be opened for inspection of the inside, for example.

As the locking device 22, for example, one having a structure described in Japanese Utility Model Laid-Open No. 6-75574 is adopted. In the locking device having the structure described in Japanese Utility Model Laid-Open No. 6-75574, the front frame is locked by the engagement of the hook member arranged on the front frame side and the fixing metal fitting arranged on the main body frame side. It was

For this reason, the hook member and the fixing metal member must be able to withstand a strong external force, for example, trying to pry up the front frame due to fraudulent acts. It was made. In addition, a strong spring was used to bias the hook member in the locking direction.

[0006]

However, since the spring is strong, the force generated between the fixing member and the hook member (the force in the direction of pushing down the hook member) at the time of locking is also large. For this reason, the hook member and the fixing member may be engaged with each other, which may prevent locking. In addition, even though it is made sturdy, the hook member and the fixing metal may be deformed due to long-term use, and it may not be possible to lock normally.

The object of the present invention is to prevent such locking failure.

[0008]

As a means for solving the above problems, the invention according to claim 1 can be adopted. The lock mechanism includes an oscillating body and an urging member attached to the first member, and a stopper fixed to the second member.

The oscillating body includes a rotation center portion rotatably held by a shaft erected on the first member, and an abutting end oscillating and displaceable around the shaft to a lock side and a release side. And a contact edge portion provided from the contact end portion toward the center of rotation on the lock side of the contact end portion, the biasing member biases the rocking body toward the lock side, When an external force other than this biasing force is not applied to the rocking body, the rocking body is set to 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 that is connected to the contact surface.

In this lock mechanism, when the rocking body is moved forward from the push-up protrusion side toward the recessed portion side with the center of rotation as the leading end, the contact edge contacts the push-up protrusion. The oscillating body is oscillated and displaced toward the release side against the urging force of the urging member, and the abutting end portion pushes up the protrusion by continuing this forward movement, and the oscillating body is moved to the lock side by the urging force of the urging member. When displaced, the recess receives the abutting end and locks it.

When the oscillating body is moved backward after the abutting end is received in the concave portion and is in the locked state, the abutment surface prevents the abutting end from moving backward and prevents the oscillating body from moving backward. Then
Maintain the locked state. That is, the force that acts to maintain the locked state is the force in the direction in which the contact surface and the contact end portion press each other. Therefore, the lock can be maintained even if the contact surface and the contact end are not in precise contact with each other. For this reason,
Even if it is slightly deformed after long-term use, it will not be locked.

Further, the urging force of 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 exerted when the push-up protrusion swings and displaces the swinging body to the release side is small, and there is no problem that either one is deformed by the friction between the push-up protrusion and the swinging body.

Therefore, in this lock mechanism, there is no possibility that the lock cannot be made. In the ball-ball game machine according to claim 2, the main body frame is used as the second member according to claim 1, and inside the vertical side on the opening / closing side that faces the vertical side on the axial side of the main body frame.
The first stopper according to claim 1, wherein the stopper is fixed and the front frame is formed.
As the member of (1), the rocking member is attached to a position that aligns with the stopper when the front frame is joined to the main body frame, and the lock mechanism according to claim 1 is equipped, so that when the front frame is joined to the main body frame. It is possible to avoid becoming impossible to lock.

According to another aspect of the ball game machine of the present invention, the abutting end is disengaged from the abutting surface by oscillating the oscillating body toward the releasing side against the urging force of the urging member. Since the unlocking means that allows the rocking body to move backward is provided, the front frame can be opened by operating this unlocking means. Therefore, for example, a clerk of a game shop can open and close the front frame when desired.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described by way of specific examples.

[0016]

[Specific Example] This specific example is an example in which the ball game machine shown in FIG. 1 is equipped with a lock mechanism. Since the external configuration of the ball game machine 10 is as described in the related art,
Here, the description is omitted.

As shown in FIG. 2, a shaft pin 34 is erected on the rear surface 32 side of the side surface 30 on the opening / closing side of the front frame 20, and an L-shaped swinging body 36 is provided via the shaft pin 34. It is installed. Specifically, the shaft pin 34 is the rocking member 3.
6 penetrates a rotation center 38 corresponding to a corner of the shaft 6, and the rocking body 36 can rock around the shaft pin 34 in the clockwise direction (release side) and the counterclockwise direction (lock side) in the drawing. There is.

The plastic rocker 36 has a plate-shaped lock bar 42 extending from the rotation center 38 toward the front surface 40 of the front frame 20 and a rotation center along a direction substantially orthogonal to the lock bar 42. And an operation bar 44 extending from 38. The abutment end 46 of the lock bar 42 has an arc shape, and an elongated hole 48 is provided inside the abutment end 46 so as to penetrate the lock bar 42. The upper and lower edges of the lock bar 42 are linear, and the lower edge is the contact edge portion 49.

An engaging pin 52 fixed to an elevating piece 50 made of a steel plate passes through the elongated hole 48 of the lock bar 42.
The engagement pin 52 can move freely within the elongated hole 48. Lifting piece 5
At 0, a spring engaging projection 54, an unlocking projection 56, and a guide hole 57 are provided.

The projection 54 has a coil spring 5 in an extended state.
8 is connected to one end, and the other end of the coil spring 58 is connected to a pin 60 standing on the side surface 30 of the front frame 20. Therefore, the coil spring 58 attaches the lifting piece 50 to the pin 6
The oscillating body 36 is urged toward the lock side via the lifting piece 50.

The guide hole 57 has a side surface 30 of the front frame 20.
The guide pin 62 erected on the
0 can be displaced up and down between the lowered position (the position shown in the figure) where the guide pin 62 is the upper end of the guide hole 57 and the raised position where the guide pin 62 is the lower end of the guide hole 57. Therefore, the rocking body 36 can also be rocked and displaced within a range corresponding to the lifting range of the lifting piece 50.

The projection 56 extends in the direction perpendicular to the plane of the drawing in the figure, and the keyhole 22a of the locking device 22 shown in FIG.
By inserting a key (not shown) into and rotating the unlocking piece, the unlocking piece (not shown) pushes up the projection 56, and the entire lifting piece 50 can be pushed up to the raised position. Further, at that time, the swinging body 36 is swingably displaced to the release side.

The rocking body 36 can be rocked by, for example, applying a force to the operation bar 44 by applying a finger. The above is the structure of the lock mechanism on the front frame 20 side. Next, the structure of the lock mechanism on the body frame 12 side will be described.

As shown in FIG. 3, an inner surface 72 of the vertical side 70 on the opening / closing side of the main body frame 12 is provided with a push-up protrusion 74 at a portion slightly entering from the front surface 70a side to the back surface 70b side. Behind the push-up protrusion 74, an abutting surface 76 is formed 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 rear surface 70b. The contact surface 76, the horizontal portion 78, and the inclined portion 80 form a recess 82. A stopper 84 is formed by the push-up protrusion 74, the contact surface 76, the horizontal portion 78, and the inclined portion 80.

The vertical side 70 of the main body frame 12 is made of plastic, and the stopper 84 portion projects from the periphery thereof along the direction perpendicular to the paper surface of FIG. 3, and a step is formed between the periphery and the periphery. There is. Next, the operation of the lock mechanism will be described with reference to FIGS. First, the case where the front frame 20 is joined to the main body frame 12 to bring the ball game machine 10 into the closed state will be described.

When the front frame 20 is brought close to the main body frame 12, the contact edge portion 49 of the rocking member 36 comes into contact with the push-up protrusion 74 of the stopper 84, as shown in FIG. When the forward movement of the front frame 20 is continued, as shown in FIGS. 5 and 6, the push-up protrusion 74 pushes up the lock bar 42 against the biasing force of the coil spring 58, and the rocking body 36 is released. Swing displacement.

When the front frame 20 is further advanced, the lock bar 42 eventually pushes up and gets over the projection 74. Then, the lock bar 42 is pulled toward the lock side by the biasing force of the coil spring 58, and the recessed portion 8 as shown in FIG.
Fall to 2. At this time, the contact end 46 of the lock bar 42 contacts the contact surface 76 of the stopper 84. For this reason,
Displacement in the direction in which the front frame 20 and the main body frame 12 are separated from each other is prevented, and the ball game machine 10 is closed.

From the state shown in FIG. 7, for example, when an external force is applied to the front frame 20 to try to retract it, the lock bar 42 contacting the contact surface 76 at the contact end 46 is contacted. Is applied with a force in the direction of displacing the lock bar 42 to the lock side. Therefore, the lock mechanism is locked more firmly, and the front frame 20 cannot be opened.

Next, two methods for opening the front frame 20 will be described. The first method is to use a key. When a key (not shown) is inserted into the keyhole 22a of the locking device 22 shown in FIG. 1 and rotated, the protrusion 56 is pushed up by an unlocking piece (not shown). As a result, the lifting 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 of the push-up protrusion 74, and the contact end 46 also contacts the contact surface 76.
Move away from 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).
(See), the lock is released. In this state, the rotation of the key may be returned.

When the front frame 20 is further retracted, the oscillating body 36 is displaced as shown in FIGS. The second method is to use the operation bar 44. When a force is applied to the operation bar 44 by applying a finger to swing the rocking body 36 to the release side, the lock bar 42 comes to the release side with respect to the push-up protrusion 74 as described above. Therefore, the front frame 20 may be detached from the main body frame 12.

As described above, there are two methods for releasing the lock, but it is usual for the game shop to use the first method. And the 2nd method is suitable for operation from the back side of the ball game machine 10, for example, when opening and closing the front frame 20 in the assembly process of the ball game machine 10.

As described above, in this lock mechanism, the force acting to maintain the locked state after the contact end 46 is received by the recessed portion 82 and the locked state is brought into contact with the contact surface 76. It is a force in the direction in which the contact end 46 pushes. Therefore, the lock can be maintained even if the contact surface 76 and the contact end 46 are not in precise contact with each other. Therefore, even if there is a slight deformation during long-term use, the lock cannot be made impossible.

The urging force of 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 exerted when the push-up protrusion 74 swings and displaces the swinging body 36 to the release side is small, and there is no problem that either one is deformed by the friction between the push-up protrusion 74 and the swinging body 36.

The embodiments of the present invention have been described with reference to the specific examples. However, the present invention is not limited to such specific examples, and may be variously implemented without departing from the gist of the present invention. Needless to say. For example, in the specific example, the vertical side of the main body frame is made of plastic and the stopper is integrally provided, but the stopper can be a separate component from the vertical side.

Although the coil spring is used as the biasing member, springs such as a leaf spring and a torsion coil spring may be used.

[0036]

As described above, the lock mechanism according to the first aspect can prevent the lock from being disabled. In the ball-ball game machine according to the second aspect, it is possible to avoid that the front frame is locked when the front frame is joined to the main frame.

According to the ball-ball game machine according to the third aspect, for example, a clerk of a game shop can open and close the front frame at a desired time.

[Brief description of the drawings]

FIG. 1 is a front view of a ball game machine of a specific example and a conventional example.

FIG. 2 is an explanatory diagram of a structure of an oscillating body of a lock mechanism of a specific example.

FIG. 3 is an explanatory diagram of the structure of the stopper of the lock mechanism of the specific example.

FIG. 4 is an explanatory diagram of the operation of the lock mechanism of the specific example.

FIG. 5 is an explanatory diagram of the operation of the lock mechanism of the specific example.

FIG. 6 is an explanatory diagram of the operation of the lock mechanism of the specific example.

FIG. 7 is an explanatory diagram of the operation of the lock mechanism of the specific example.

[Explanation of symbols]

10 ... ball game machine, 12 ... main body frame, 14 ...
Vertical side, 16 ... Hinge, 20 ... Front frame, 22 ...
・ Locking device, 22a ... Key hole, 30 ... Side surface, 34
... Axial pin, 36 ... Oscillating body, 38 ... Rotation center part, 42 ... Lock bar, 44 ... Operation bar, 46
... Abutting end, 48 ... Oval hole, 49 ... Contact edge,
50 ... Lifting piece, 52 ... Engaging 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 ... Abutment surface, 78 ... Horizontal part, 80 ...
-Inclined part, 82 ... Recessed part, 84 ... Stopper.

Claims (3)

[Claims] 1. A locking mechanism for maintaining a joined state of a first member and a second member which can be joined and separated from each other, and which can be rotated by a shaft erected on the first member. A rotation center portion, a contact end portion swingingly displaced to a lock side and a release side about the shaft, and a rotation center from the corresponding contact end portion on the lock side of the corresponding contact end portion. An oscillating body having a contact edge portion provided toward the portion, and urging the oscillating body attached to the first member to the lock side, and an external force other than the urging force exerts on the oscillating body. If not, the urging member located at the position where the rocking body is displaced to the lock side, the push-up protrusion, the contact surface formed behind the push-up protrusion, and the recessed portion connected to the contact surface. And a second portion
By providing a stopper that is fixed to the member, when the swinging body is moved forward from the push-up protrusion side toward the recessed portion side with the rotation center portion side as the leading end, the contact edge When the portion contacts the push-up protrusion, the swinging body is swing-displaced to the release side against the biasing force of the biasing member, and the abutting end portion pushes up the push-up protrusion by continuing the forward movement. When the rocking body is overridden and the oscillating body is displaced toward the lock side by the urging force of the urging member, the concave portion receives the abutting end portion, and the oscillating body is received after the abutting end portion is received in the concave portion. A lock mechanism for preventing the reciprocating movement of the oscillating body by the contact surface blocking the retreating movement of the contact end portion when the reciprocating movement is performed. 2. A rectangular main body frame, a front frame which is pivotally supported by a hinge arranged along a longitudinal side of the main body frame and which swings to open and close to join and disengage from the main body frame, and the main body. A game board is provided which is held inside a box-shaped body formed of a frame and the front frame, and when a prize or the like is established by the behavior of the game ball in the game area formed on the surface of the game board, a prize ball is established. In a ball-ball game machine that discharges game balls, the main body frame as the second member according to claim 1, inside the vertical side of the opening and closing side that opposes the vertical side of the shaft side of the main body frame. The stopper according to claim 1 is fixed, the front frame is used as a first member according to claim 1, and the rocking body is attached at a position aligned with the stopper when the front frame is joined to the main body frame. A ball game machine equipped with the lock mechanism according to Item 1. 3. The ball game machine according to claim 2, wherein the oscillating body is oscillated and displaced toward the release side against the urging force of the urging member, whereby the abutting end portion is abutted against the abutting end portion. A ball-and-ball game machine provided with an unlocking means for separating the rocking body from the contact surface so as to be able to move backward.