JPH0332391Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a mahjong game in which the dice are rolled out on the mahjong table at the beginning of the game without touching the dice directly. This invention relates to improvements to an automatic dice rollout device for a mahjong table.

The above-mentioned dice rolling device that is installed on a mahjong table is intended to roll the dice and roll the dice fairly, without touching the dice, and allows the dice to be rolled freely. Since it is sufficient for the device to be in a rolling state, it can be configured as a vibrator type device that is mechanically simple and uses a permanent magnet, an electromagnetic coil, and a spring plate. Because the vibrations are so small, the dice do not roll but instead vibrate finely, creating a situation that lacks fairness, so mechanically troublesome means such as flipping spring plates are used. .

This invention is a vibrator type that combines a permanent magnet, an electromagnetic coil, and a spring plate, and the purpose of this is to increase the rolling of the dice. It has been specially devised.

The automatic dice dispensing device for a mahjong table according to the present invention to achieve the above-mentioned object has a window hole provided at an appropriate location on the top surface of the mahjong table on the bottom side.
A cylindrical frame that is open from top to bottom is provided, and a support plate made of a spring board such as spring rope is attached to the opening on the bottom side of the frame. A permanent magnet, which is oriented horizontally, is attached and supported to the frame so that it can freely swing together with the support plate, and a support plate for supporting the dice is attached to the bottom of the frame on the upper surface side of the permanent magnet. It is formed to have a diameter somewhat smaller than the inner diameter and is installed, and connected to an AC power source through an operation switch provided at an appropriate location on the top surface of the mahjong table at a portion facing the magnetic poles S and N of the permanent magnet on the outer peripheral side of the bottom of the frame. It is characterized in that an electromagnetic coil is disposed, two dice are thrown into the frame, and the upper opening of the frame is covered with a transparent plate.

Next, an example of implementation will be described in detail with reference to the drawings.

In Fig. 1, a is a mahjong table installed on the top of the machine of automatic mahjong table A, and the mahjong tiles that have finished playing are placed in the center part of the automatic mahjong tile arrangement machine (not shown) installed below the mahjong table a. A lid body 1a is provided with a droplet 1 for dropping tiles into the hopper of the tile supply device, and is openable and closable.
It is blocked by.

b is an automatic dice dispenser according to the present invention that is installed using the lid 1a that opens and closes the droplet 1, and a dish-shaped outer box 11 is placed on the lower side of the cutout window in the center of the lid 1a. For installation, the inner box 12 formed in the shape of a lid box is inserted into the upper surface of the outer box 11 and assembled, and the outer box 11 and the inner box 12 are used as a mounting machine frame to be assembled into the inner cavity thereof. be.

That is, a window hole 10 is formed in the top plate 12a of the inner box 12, and a cylindrical frame 2 that is open upward and downward is formed on the lower surface side of the window hole 10 in the shape of a cone that faces downward and gradually reduces its inner diameter. It is suspended from the top plate 12a of the inner box 12. A support plate 3 made of a resilient plate such as spring steel is attached to the opening 20 on the bottom side of the frame 2 so as to cross the opening 20. In order to increase the swing width in the vertical direction, the support plate 3 is formed into an S-shaped ribbon in plan view, and is provided at both free ends of the support plate 3, as shown in FIG. Set screw 3 inserted into set holes 30, 30
1 and 31 open the opening 20 on the bottom side of the frame 2.
or assemble it by fixing it to the outer end surface of the mouth rim.
As shown in FIG. 5, a large number of semicircular long holes 32 are formed into a disk shape and have different curvatures.
are formed in an open shape arranged concentrically in a state where they are shifted in phase and bite each other alternately, and by means of set screws 31, 31 inserted into set holes 30, 30 provided at both left and right end portions. It is desirable to fix it to the outer end surface of the bottom side of the frame 2.

The permanent magnet 4 is attached to the upper surface of the support plate 3 to support it, but at that time, the central part of the permanent magnet 4 is placed in the center part of the support plate 3, with the direction of the magnetic poles S and N being along the horizontal direction. Set hole 3 provided in
Spacer 3 by the set screw 34 inserted into 3.
5, so that the permanent magnet 4 and the support plate 3 are supported so as to freely swing relative to the frame 2.

Reference numeral 7 denotes a support plate that serves as the bottom plate of the cylindrical frame 2 and supports the dice 6, 6, and is formed to have a diameter somewhat smaller than the inner diameter of the bottom side of the frame 2 so that the permanent magnet 4
It is attached and supported on the upper surface side, so that when the permanent magnet 4 swings relative to the frame 2 together with the support plate 3, it swings freely relative to the frame 2 together with it. The inner cavity of the frame 2 is closed by the support plate 7 and the transparent plate 22 that covers the upper opening with the two dice 6, 6 inserted therein.

Reference numeral 8 denotes an electromagnetic coil provided on the outer periphery side of the bottom of the frame 2 at a portion facing the magnetic poles S and N of the permanent magnet 4, and its circuit connects the operating section at the upper end to the top plate of the inner box 12 described above. The switch SW is exposed on the top side of 12a and assembled to the top plate 12a of the inner box 12.
It is connected to an AC power source via. Note that the switch SWs are provided at four locations so that the four players playing the game can operate them individually. Further, 13 is a mounting plate that supports the lower part of the switch SW.

Next, to explain the function and effect, the automatic dice issuing device for a mahjong table according to the present invention configured as described above turns on the switch SW to operate the electromagnetic coil 8, and the magnetic pole generated by the electromagnetic coil 8 is activated. When an attractive force and a repulsive force are generated alternately between the magnetic poles S and N of the permanent magnet 4,
As shown by arrows A and B in FIG. 6, the ends of the permanent magnet 4, which serve as magnetic poles S and N, repeatedly swing up and down with the center of the permanent magnet 4 as the center of rotation. As a result, the support plate 7 that supports the dice 6, 6 supported on the upper surface of the permanent magnet 4 will be able to swing up and down at its periphery largely around the center of the support plate 7. The supporting dice 6, 6 are strongly jumped up, and the rolling of the dice 6, 6 is ensured.

Therefore, according to the present invention, the dice can be reliably rolled using a simple mechanism that combines a permanent magnet, an electromagnetic coil, and a spring.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a mahjong table in which the present invention can be implemented, Fig. 2 is an enlarged plan view of the main parts of the above, Fig. 3 is a longitudinal sectional side view of the main parts of the above, Fig. 4 is a plan view of the support plate, Fifth
The figure is a plan view of a supporting plate of another embodiment, and FIG. 6 is an explanatory diagram of the operation of the present invention. Explanation of symbols in the drawings, A... Automatic mahjong table, a... Mahjong table, b... Automatic dice issuing device, 1... Drop opening, 1
a... Lid body, 10... Window hole, 11... Outer box, 12... Inner box, 12a... Top plate, 13... Mounting plate, 2... Frame, 20... Opening, 22... Transparent plate, 3... Support plate,
30... Set hole, 31... Set screw, 32... Long hole, 33... Set hole, 34... Set screw, 35...
Spacer, S/N...magnetic pole, 4...permanent magnet, SW
...Operation switch, 6...Dice, 7...Base plate, 8
...Electromagnetic coil.

Claims (1)

[Scope of utility model registration request] A cylindrical frame 2 that opens up and down is provided on the bottom side of a window hole 10 provided at an appropriate location on the top surface of the mahjong table a, and the opening 20 on the bottom side of the frame 2 is made of a spring material such as spring steel. A support plate 3 made of a plate is attached, and a permanent magnet 4 with magnetic poles S and N facing in the horizontal direction is attached to the upper surface of the support plate 3 and is freely moved together with the support plate 3 to the frame 2. A supporting plate 7 for supporting the dice 6, 6 is attached to the upper surface side of the permanent magnet 4 and is formed to have a diameter somewhat smaller than the inner diameter of the bottom of the frame 2. The permanent magnet 4 on the side
An electromagnetic coil 8 connected to an AC power supply via an operation switch SW provided at an appropriate location on the top surface of the mahjong table a is arranged at a portion facing the magnetic poles S and N of the mahjong table a, and two dice 6 and 6 are placed inside the frame 2. This automatic dice issuing device for a mahjong table is characterized in that the upper opening of the frame 2 is covered with a transparent plate 22.