JP6868287B2 - Lower hinge for game consoles - Google Patents

Description

The present invention relates to a detachable hinge for a game machine that attaches a front frame of a game machine such as a slot machine or a pachinko machine to a main body frame so as to be openable and closable, and particularly to a lower hinge attached to the front frame and the lower part of the main body frame.

Conventionally, as a hinge for attaching the front frame of a game machine such as a pachinko machine to the main body frame so as to be openable and closable, a hinge having a structure consisting of an upper hinge attached to the upper part and a lower hinge attached to the lower part is usually used. Both the upper hinge and the lower hinge are formed by dividing the hinge into a fixed portion and a movable portion, and the movable portion side is rotatably supported with respect to the fixed portion side by fitting the shaft pin and the bearing portion. That is, the fixed part of the upper hinge is fixed to the upper corner of the main body frame, the movable part of the upper hinge is fixed to the upper corner of the front frame, the fixed part of the lower hinge is fixed to the lower corner of the main frame, and the lower part. The movable part of the hinge is fixed to the lower corner of the front frame and used.

As a hinge fixed to the front frame and the lower part of the main body frame in such a hinge for a game machine, a shaft pin is conventionally provided on the horizontal plate portion of the hinge fixing portion fixed to the main body frame and fixed to the front frame. A bearing hole in which the shaft pin is fitted is formed in the horizontal plate portion of the hinge movable portion to be formed, and the shaft pin is overlapped with the horizontal plate portion of the hinge movable portion on the horizontal plate portion of the hinge fixing portion. A hinge having a structure in which the hinge is fitted into a bearing hole and assembled is used (see, for example, Patent Document 1 below).

Japanese Unexamined Patent Publication No. 2003-245448

This type of lower hinge has the advantage that it has a relatively simple structure and can be manufactured using steel plate as the main material at a relatively low cost. The horizontal plate portion of the hinge movable portion and the horizontal plate portion of the hinge fixing portion are overlapped with each other in the used state in which the hinges are fitted. Therefore, when the front frame of the game machine is opened and closed, and when the front frame is rotated with respect to the main body frame, the contact surface between the horizontal plate portion of the hinge movable portion and the horizontal plate portion of the hinge fixing portion slides and slides. Almost the entire load of the front frame is applied to the moving surface.

Since various electronic devices are mounted on the front frame of recent game machines, the load is very large, and a large load is applied to the horizontal plate portion of the hinge movable part and the horizontal plate portion of the hinge fixing portion. Is applied, and the movable part rotates in that state. Therefore, with long-term use, the sliding surface of the horizontal plate is easily worn due to frictional resistance, and metal powder adheres to the sliding surface due to the occurrence of wear to promote wear, and the lower hinge slides. There was a problem that the frictional resistance of the part increased.

The present invention has been made in view of the above points, and an object of the present invention is to provide a lower hinge for a game machine capable of preventing wear of a sliding surface and reducing frictional resistance during opening and closing.

In order to achieve the above object, the lower hinge for a game machine of the present invention is
A fixed portion fixed to the lower portion of the main body frame of the game machine and a movable portion fixed to the lower portion of the front frame of the game machine are provided, and the horizontal plate portion of the movable portion is attached to the fixed portion via a spacer. A lower hinge for a game machine that is superposed on a horizontal support and the movable part is rotatably assembled.
A support shaft is projected on the horizontal support portion of the fixed portion, and a support inclined convex portion is formed on the horizontal support portion at a position away from the support shaft.
An axially inclined convex portion is provided around the support shaft on the horizontal support portion.
A bearing portion is projected on the horizontal plate portion of the spacer, and a bearing hole is provided inside the bearing portion with a bottom opening, and the spacer is a shaft provided on the horizontal plate portion of the movable portion. The bearing portion is inserted into the hole from below and attached to the lower surface of the horizontal plate portion of the movable portion.
The lower surface of the spacer is provided with a support inclined recess that is in sliding contact with the inclined surface of the support inclined convex portion when the movable portion is rotated, and the axially inclined convex portion is provided around the bearing hole of the spacer. An axially inclined recess that slides into the inclined surface is provided.
When the inclined surface of the support inclined convex portion and the support inclined concave portion and the inclined surface of the axial circumferential inclined convex portion and the axial circumferential inclined concave portion rotate to the open side of the movable portion, the movable portion is movable with respect to the fixed portion. It is characterized in that it is formed in a direction that slightly raises the portion.

According to the lower hinge for a game machine of the present invention, when the front frame of the game machine is rotated to the open side, a movable part with a spacer is formed around a support shaft projecting on the horizontal support part of the fixed part. The rotation is started, and at this time, the inclined surface of the support inclined recess of the spacer slides so as to ride on the inclined surface of the support inclined convex portion on the fixed portion, and the inclined surface of the axial circumferential inclined recess of the spacer is the fixed portion. It slides so as to ride on the inclined surface of the axially inclined convex portion around the support shaft. As a result, the movable portion rotates so as to be slightly lifted with respect to the fixed portion, and the frictional resistance between the horizontal support portion and the horizontal plate portion, which is the sliding contact portion between the fixed portion and the movable portion, is reduced due to friction. The generation of metal powder is also prevented, and the movable portion can be smoothly rotated.

Here, it is preferable that the spacer is integrally molded with a synthetic resin together with the horizontal plate portion and the bearing portion.

Further, here, it is preferable that the support inclined convex portion is formed on the horizontal support portion in a substantially fan shape centered on the support shaft. Further, it is preferable that the support inclined concave portion has a shape corresponding to the support inclined convex portion and is formed on the lower surface of the spacer.

Further, here, as the axially inclined convex portion, two axially inclined convex portions may be provided around a support shaft on the horizontal support portion of the fixed portion in a predetermined angle range. .. Further, it is preferable that the two axially inclined concave portions are formed around the bearing hole on the lower surface of the spacer in a shape corresponding to the axially inclined convex portion as the axially inclined concave portion.

According to the lower hinge for a game machine of the present invention, it is possible to prevent wear of the sliding surface and reduce frictional resistance during opening and closing.

It is a front view of the lower hinge for a game machine which shows one Embodiment of this invention. It is a left side view of the lower hinge. It is a right side view of the lower hinge. (A) is a perspective view of the lower hinge, and (b) is a perspective view seen from below. It is an exploded perspective view of the lower hinge. (A) is a front view of the fixed portion, (b) is a left side view of the fixed portion, and (c) is a right side view of the fixed portion. (A) is a perspective view of the fixed portion, and (b) is a perspective view seen from the lower side of the fixed portion. (A) is a perspective view seen from the lower side of the spacer, and (b) is a perspective view with different angles. (A) is a perspective view in a state where the movable portion and the spacer are overlapped, and (b) is a perspective view seen from below. It is a top view which shows the usage form when a movable part is closed. It is a top view which shows the usage form when a movable part is opened. It is a perspective view which shows the usage form when a movable part is opened. It is an exploded perspective view of the lower hinge of another embodiment. It is an exploded perspective view of the lower hinge of still another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the lower hinge is a detachable hinge attached to the lower part of the main body frame 30 and the front frame 31 of a game machine such as a pachinko machine. The lower hinge is attached to the fixed portion 1 fixed to the main body frame 30, the movable portion 10 fixed to the front frame 31, and the lower surface of the horizontal plate portion 11 of the movable portion 10, and the horizontal support portion 4 of the fixed portion 1 is attached. It is composed of a spacer 20 inserted between and.

As shown in FIGS. 5 to 7, the fixing portion 1 is formed by, for example, pressing a metal plate, and is bent so as to vertically raise the vertical mounting portion 2 on the left side of the horizontal mounting portion 3 to form a flat plate. A horizontal support portion 4 is formed at the front portion of the horizontal mounting portion 3 of the above. A support shaft 5 is vertically projected on the horizontal support portion 4, and two axially inclined convex portions 7 are provided around the base portion of the support shaft 5. The two axially inclined convex portions are provided around the support shaft 5 on the horizontal support portion 4 in an arc shape with an angle range of about 90 degrees and an interval of about 90 degrees. As shown in FIG. 7, the two axially inclined convex portions 7 are formed by having an inclined surface on the upper surface thereof in the circumferential direction. The inclined surface of each axially inclined convex portion 7 is formed as an arcuate slope in a plan view so as to gradually increase its thickness (height) in the clockwise direction.

Further, as shown in FIG. 7, a support inclined convex portion 6 is formed on the horizontal support portion 4 at a position away from the support shaft 5. The support inclined convex portion 6 is formed in a fan shape centered on the support shaft 5, and its height (thickness) is formed in a range of about 90 degrees so as to gradually increase in the clockwise direction in a plan view. To.

On the other hand, as shown in FIG. 5, the movable portion 10 is formed by, for example, pressing a metal plate, and is bent so as to vertically raise the vertical mounting portion 12 at the rear portion of the horizontal plate portion 11 to form a flat plate. A shaft hole 11a is formed in the front portion of the horizontal plate portion 11. A plurality of mounting holes are formed in the vertical mounting portion 12. The shaft hole 11a of the horizontal plate portion 11 is formed so that the bearing portion 22 of the spacer 20 can be inserted from below.

The spacer 20 is integrally molded into a plate shape using synthetic resin, and a bearing portion 22 is projected on the horizontal plate 21 portion of the spacer 20. In the bearing portion 22, a bearing hole 22a is formed inside with an opening on the bottom surface, and is formed in a downward cup shape. The spacer 20 has a bearing portion 22 inserted from below into a shaft hole 11a provided in the horizontal plate portion 11 of the movable portion 10, and is formed on the lower surface of the horizontal plate portion 11 of the movable portion 10 as shown in FIG. The mounting screw 19 is inserted into the mounting hole 25 for mounting. The spacer 20 is preferably molded using a synthetic resin material having high wear resistance, low frictional resistance during sliding, and low wear, and can also be made of metal.

As shown in FIG. 8, a support inclined recess 23 is provided on the lower surface of the spacer 20, and the support inclined recess 23 is formed in a shape corresponding to the support inclined convex portion 6 provided on the horizontal support portion 4 of the fixing portion 1. When the movable portion 10 to which the spacer 20 is attached is superposed on the horizontal support portion 4 of the fixed portion 1, the support inclined convex portion 6 is fitted with the support inclined concave portion 23. That is, the support inclined recess 23 is formed in a fan shape, and the depth thereof is formed in a range of about 90 degrees so as to gradually increase in the clockwise direction in a plan view.

Further, the inclined surface of the support inclined concave portion 23 of the spacer 20 is movable with respect to the fixed portion 1 by sliding contact with the inclined surface of the support inclined convex portion 6 of the fixed portion 1 when the movable portion 10 is rotated to the open side. It is formed so as to be inclined in a direction in which the portion 10 is slightly raised, that is, in a direction opposite to the inclined surface of the support inclined convex portion 6.

Further, two axially inclined recesses 24 are provided around the bearing hole 22a on the lower surface of the spacer 20. The two axially inclined recesses 24 are formed in a shape corresponding to the axially inclined convex portion 7 provided around the support shaft 5 of the fixing portion 1, and the movable portion 10 to which the spacer 20 is attached is fixed to the fixing portion 1. When the support shaft 5 is inserted into the bearing hole 22a of the bearing portion 22, the two axially inclined convex portions 7 are fitted to the axially inclined concave portion 24, respectively. It has become. That is, each axially inclined recess 24 is formed so that its depth gradually increases in the clockwise direction in a plan view, and an arc-shaped slope is formed on the bottom surface of the recess.

Further, the inclined surfaces of the two axially inclined concave portions 24 of the spacer 20 are in sliding contact with the inclined surfaces of the axially inclined convex portion 7 of the fixed portion 1 when the movable portion 10 is rotated to the open side. , The movable portion 10 is formed so as to be slightly raised with respect to the fixed portion 1, that is, inclined in a direction opposite to the inclined surface of the axially inclined convex portion 7.

In this way, when the movable portion 10 with the spacer 20 is rotated to the open side on the fixed portion 1 when the front frame is opened, the inclined surface of the support inclined convex portion 6 and the supported inclined concave portion 23 are in sliding contact with each other. Further, the movable portion 10 is slightly raised with respect to the fixed portion 1 by the sliding contact between the axially inclined convex portion 7 and the inclined surface of the axially inclined concave portion 24.

In this embodiment, the angle range between the support inclined convex portion 6 and the support inclined concave portion 23 is about so that the movable portion 10 slightly rises while the movable portion 10 opens about 90 degrees with respect to the fixed portion 1. The angle range of the two axially inclined convex portions 7 and the two axially inclined concave portions 24 was set to 90 degrees, but the angle range was set according to the angle of the movable portion 10 toward the open side. Can be changed. Further, the two axially inclined convex portions 7 and the two axially inclined concave portions 24 may be provided around the support shaft 5 or around the bearing hole 22a as three or four.

As shown in FIG. 10, the fixing portion 1 configured as described above has its vertical mounting portion 2 and horizontal mounting portion 3 applied to the mounting surface on the lower left side inside the main body frame 30 of the game machine, and is horizontal thereof. With the support portion 4 protruding forward, it is fixed to the main body frame 30 side of the game machine by using the mounting holes and the fixing screws.

On the other hand, as shown in FIG. 9, a spacer 20 is attached to the lower surface of the movable portion 10. The spacer 20 has its bearing portion 22 inserted into the shaft hole 11a of the horizontal plate portion 11 of the movable portion 10, overlapped with the lower surface thereof, and the mounting screw 19 is inserted into the mounting hole 25 to insert the mounting screw 19 into the horizontal plate portion. It is attached to the lower surface of 11.

The movable portion 10 with a spacer abuts its horizontal plate portion 11 against the bottom surface of the lower left side of the front frame 31 of the game machine, and the vertical attachment portion 12 against the inside of the lower left side of the front frame 31. Using the mounting holes and fixing screws drilled in 12, the bearing portion 22 is fixed in a state of being projected forward.

Then, another separate type hinge is attached to the upper part of the main body frame 30 and the upper part of the front frame 31, and when the front frame 31 is attached to the main body frame 30, for example, the front frame 31 is held and predetermined with respect to the main body frame 30. With the angle open, first, the bearing hole 22a of the bearing portion 22 of the movable portion 10 (spacer 20) is fitted into the support shaft 5 of the fixing portion 1, and then the movable portion of the upper separated hinge (not shown) is fixed. Fit into.

In this state, the front frame 31 is attached to the main body frame 30 so as to be openable and closable via a hinge, and when the front frame 31 is closed, the closed state is as shown in FIG. In this state, the support inclined recess 23 on the lower surface of the spacer 20 is properly fitted into the support inclined convex portion 6 provided on the horizontal support portion 4 of the fixed portion 1, and the shaft of the spacer 20 is fitted into the axially inclined convex portion 7. The circumferentially inclined recess 24 fits properly. In the proper fitting state, the lower surface of the spacer 20 is in close contact with the horizontal support portion 4, and the reference position is reached.

When the front frame 31 is opened with respect to the main body frame 30, as shown in FIGS. 11 and 12, the movable portion 10 rotates clockwise with respect to the fixed portion 1 about the support shaft 5, and the spacer 20 of the movable portion 10 Slides on the fixed portion 1. At this time, the inclined surface of the support inclined recess 23 of the spacer 20 is in sliding contact with the inclined surface of the support inclined convex portion 6 of the fixing portion 1, and the inclined surface of the axial circumferential inclined recess 24 of the spacer 20 is around the support shaft 5. It slides on the inclined surface of the axially inclined convex portion 7.

At this time, the downwardly inclined surface of the support inclined recess 23 slides on the upwardly inclined surface of the support inclined convex portion 6, and the downwardly inclined surface of the axially circumferentially inclined concave portion 24 is the axially inclined convex portion 7. It slides so as to ride on an upwardly inclined surface, whereby the movable portion 10, that is, the front frame 31, is slightly lifted and raised from the reference position by a height of, for example, 1 mm to several mm.

Therefore, even if the lower surface of the horizontal plate portion 21 of the spacer 20 of the movable portion 10 is in contact with the horizontal support portion 4 of the fixed portion 1, the frictional resistance thereof becomes very small and the front frame 31 can be opened and closed smoothly. can do. Further, as compared with a hinge in which metal portions slide with each other as in a conventional hinge, wear of the sliding portion is reduced, and generation of metal powder due to friction can be prevented. Further, the frictional resistance can be reduced and the wear of the spacer can be reduced as compared with the conventional hinge in which a simple sheet-shaped spacer is inserted between the metal portions sliding on each other.

Contrary to the above embodiment, as shown in FIG. 13, a support inclined recess 6A is provided on the horizontal support portion at a position away from the support shaft 5 of the fixed portion 1A, and the support shaft 5 on the horizontal support portion 5 Axle tilted recess 7A is provided around the wheel, and around the bearing hole 22a on the lower surface of the spacer 20A, a shaft circumference tilted convex portion 24A that is in sliding contact with the tilted surface of the shaft circumference tilted recess 7A is provided, and a horizontal plate portion of the spacer 20A. It is also possible to provide a support inclined convex portion 23A that is in sliding contact with the inclined surface of the support inclined concave portion 6A on the lower surface of the support inclined concave portion 6A.

Even with such a configuration, when the movable portion 11 is rotated to the open side, the support inclined convex portion 23A is in sliding contact with the inclined surface of the support inclined concave portion 6A, and the axial circumferential inclined convex portion 24A is inclined by the axial circumferential inclined concave portion 7A. The movable portion 11 can be slightly raised with respect to the fixed portion 1A by sliding contact with the surface, and the frictional resistance can be reduced.

FIG. 14 shows yet another embodiment. In this example, the support shaft 5B is projected downward on the lower surface of the horizontal plate portion 11B of the movable portion 10B, and the spacer 20B is mounted on the fixed portion 1B. A bearing portion 22B is projected from the lower surface of the spacer 20B, and a bearing hole 22b is provided inside the bearing portion 22B by opening on the bearing portion 22B.

A support inclined convex portion 16B is provided on the horizontal plate portion 11B at a position away from the support shaft 5B of the movable portion 10B, and an axially inclined convex portion 17B is provided around the support shaft 5B. Further, around the bearing hole 22b on the spacer 20B, an axial circumferential inclined concave portion 24B that is in sliding contact with the inclined surface of the axial circumferential inclined convex portion 17B is provided, and a support inclined convex portion 16B is provided on the upper surface of the horizontal plate portion 21 of the spacer 20B. A support inclined recess 23B that is in sliding contact with the inclined surface of the above is provided.

Even with such a configuration, when the movable portion 11B is rotated to the open side, the inclined surface of the support inclined convex portion 16B and the supported inclined concave portion 23B are in sliding contact with each other, and the axial circumferential inclined convex portion 17B and the axial circumferential inclined concave portion 24B are inclined. The surfaces are in sliding contact with each other, and the movable portion 11B can be slightly raised with respect to the fixed portion 1B and the spacer 20B to reduce the frictional resistance.

Further, the relationship between the support inclined convex portion 16B and the support inclined concave portion 23B provided at the contact portion between the movable portion 10B and the spacer 20B and the axial circumferential inclined convex portion 17B and the axial circumferential inclined concave portion 24B shown in FIG. 14 is different from each other. The concave portion and the convex portion are reversed, a support inclined concave portion is provided on the lower surface of the movable portion 10B, an axially inclined concave portion is provided around the support shaft 5B, a support inclined convex portion is provided on the spacer 20B, and the bearing hole 22b is provided. It is also possible to provide an axially inclined convex portion around the periphery.

1 Fixed part 2 Vertical mounting part 3 Horizontal mounting part 4 Horizontal support part 5 Support shaft 6 Support inclined convex part 7 Axis circumferentially inclined convex part 10 Movable part 11 Water plate part 11a Shaft hole 12 Vertical mounting part 19 Mounting screw 20 Spacer 21 Horizontal Plate part 22 Bearing part 22a Bearing hole 23 Support inclined recess 24 Axle peripheral inclined recess 25 Mounting hole 30 Main body frame 31 Front frame

Claims (8)

A fixed portion fixed to the lower portion of the main body frame of the game machine and a movable portion fixed to the lower portion of the front door of the game machine are provided, and the horizontal plate portion of the movable portion is attached to the fixed portion via a spacer. A lower hinge for a game machine that is superposed on a horizontal support and the movable part is rotatably assembled.
A support shaft is projected on the horizontal support portion of the fixed portion, and a support inclined convex portion is formed on the horizontal support portion at a position away from the support shaft.
An axially inclined convex portion is provided around the support shaft on the horizontal support portion.
A bearing portion is projected on the horizontal plate portion of the spacer, and a bearing hole is provided inside the bearing portion with a bottom opening, and the spacer is a shaft provided on the horizontal plate portion of the movable portion. The bearing portion is inserted into the hole from below and attached to the lower surface of the horizontal plate portion of the movable portion.
The lower surface of the spacer is provided with a support inclined recess that is in sliding contact with the inclined surface of the support inclined convex portion when the movable portion is rotated, and the axially inclined convex portion is provided around the bearing hole of the spacer. An axially inclined recess that slides into the inclined surface is provided.
When the inclined surface of the support inclined convex portion and the support inclined concave portion and the inclined surface of the axial circumferential inclined convex portion and the axial circumferential inclined concave portion rotate to the open side of the movable portion, the movable portion is movable with respect to the fixed portion. A lower hinge for game consoles, which is characterized by being formed in a direction that slightly raises the part. The lower hinge for a game machine according to claim 1, wherein the spacer is integrally molded with a synthetic resin together with the horizontal plate portion and the bearing portion. The lower hinge for a game machine according to claim 1, wherein the support inclined convex portion is formed on the horizontal support portion in a substantially fan shape centered on the support shaft. The lower hinge for a game machine according to claim 3, wherein the support inclined recess has a shape corresponding to the supported inclined convex portion and is formed on the lower surface of the spacer. The first aspect of the present invention, wherein as the axially inclined convex portion, two axially inclined convex portions are provided around a support shaft on the horizontal support portion of the fixed portion within a predetermined angle range. Lower hinge for game consoles. The fifth aspect of the present invention, wherein, as the axially inclined concave portion, two axially inclined concave portions are formed around a bearing hole on the lower surface of the spacer in a shape corresponding to the axially inclined convex portion. Lower hinge for game consoles. A fixed portion fixed to the lower portion of the main body frame of the game machine and a movable portion fixed to the lower portion of the front door of the game machine are provided, and the horizontal plate portion of the movable portion is attached to the fixed portion via a spacer. A lower hinge for a game machine that is superposed on a horizontal support and the movable part is rotatably assembled.
A support shaft is projected on the horizontal support portion of the fixed portion, and a support inclined recess is formed on the horizontal support portion at a position away from the support shaft.
An axially inclined recess is provided around the support shaft on the horizontal support portion.
A bearing portion is projected on the horizontal plate portion of the spacer, and a bearing hole is provided inside the bearing portion with a bottom opening, and the spacer is a shaft provided on the horizontal plate portion of the movable portion. The bearing portion is inserted into the hole from below and attached to the lower surface of the horizontal plate portion of the movable portion.
On the lower surface of the spacer, a support inclined convex portion that is in sliding contact with the inclined surface of the support inclined concave portion when the movable portion is rotated is provided, and the axial circumferential inclined concave portion is inclined around the bearing hole of the spacer. An axially inclined convex portion that slides into contact with the surface is provided.
When the support inclined concave portion, the inclined surface of the support inclined convex portion, and the inclined surface of the axial circumferential inclined concave portion and the axial circumferential inclined convex portion rotate to the open side of the movable portion, the movable portion is movable with respect to the fixed portion. A lower hinge for game consoles, which is characterized by being formed in a direction that slightly raises the part. A fixed portion fixed to the lower portion of the main body frame of the game machine and a movable portion fixed to the lower portion of the front door of the game machine are provided, and the horizontal plate portion of the movable portion is attached to the fixed portion via a spacer. A lower hinge for a game machine that is superposed on a horizontal support and the movable part is rotatably assembled.
A support shaft is projected from the lower surface of the horizontal plate portion of the movable portion, and a support inclined convex portion is formed on the lower surface of the horizontal plate portion at a position away from the support shaft.
An axially inclined convex portion is provided around the support shaft on the lower surface of the horizontal plate portion.
A bearing portion is projected from the lower surface of the horizontal plate portion of the spacer, and the bearing portion is provided with a bearing hole into which the support shaft can be inserted, and the spacer is provided with a shaft hole provided in the fixing portion. Inserted from above and mounted on the horizontal support of the fixation
A support inclined recess that is in sliding contact with the inclined surface of the support inclined convex portion when the movable portion is rotated is provided on the spacer, and the axially inclined convex portion is inclined around the bearing hole of the spacer. An axially inclined recess that slides into contact with the surface is provided.
When the support inclined convex portion and the inclined surface of the support inclined concave portion and the axial peripheral inclined convex portion and the inclined surface of the axial peripheral inclined concave portion rotate to the open side of the movable portion, the fixed portion and the spacer On the other hand, a lower hinge for a game machine, which is formed in a direction in which the movable part is slightly raised.

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