JPH0331346Y2 - - 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 a vibrator-type automatic dice dispenser that uses a permanent magnet, an electromagnetic coil, and a spring plate among automatic dice dispensers for a mahjong table that is installed on the table.

More specifically, as shown in FIG.
A cylindrical frame 2 whose axial direction is the vertical direction is provided on the lower surface side of the window hole 10 covered by the window hole 0a, and a support plate 3 made of a resilient plate such as spring steel is attached to the bottom of the frame 2. It is installed so that it can freely vibrate with respect to the frame 2, and on the upper surface of the support plate 3,
The permanent magnet 4 with the magnetic poles S and N facing in the horizontal direction is attached to the frame 2 together with the support plate 3.
Mounted and supported so that it can freely vibrate against
A support plate 6 for supporting the dice 5 is attached to the upper surface of the permanent magnet 4 and is formed to have a diameter slightly smaller than the inner diameter of the bottom of the frame 2, and the magnetic poles S and N of the permanent magnet 4 are attached to the outer circumferential side of the bottom of the frame 2. An electromagnetic coil 7 connected to an AC power source via an operation switch is connected to a part facing the
The present invention relates to an improvement in an automatic dice dispensing device in a vibrator-type automatic mahjong table, which is constructed by disposing the dice 5 and rotatably supporting the dice 5 on the upper surface of the support plate 6 in the frame 2.

Although the vibrator-type automatic dice dispensing device of the above-mentioned form has the advantage of simplifying the mechanism,
Since it is difficult to increase the amplitude of vibration of the support plate 3 made of a spring plate, the amplitude of the vibration of the support plate 6 that supports the dice 5 becomes narrower, causing a problem in which it is difficult for the dice 5 to roll.

For this reason, in the past, the cylindrical frame 2
A support plate 3 made of a spring plate provided at the bottom of the second
As shown in the figure, it is formed into a tomoe-shaped strip plate, fixed to the bottom of the cylindrical frame 2 by screws inserted into screw holes 30, 30 formed at both ends thereof, and fixed to the bottom of the cylindrical frame 2 at the center in the longitudinal direction. Either the central part of the permanent magnet 4 is assembled and supported by a screw into a set hole 31 provided in the part, or a large number of arcuate long holes 32 are concentrically arranged in parallel as shown in Fig. 3. A screw hole 3 formed in a disc shape and provided at both ends thereof.
The cylindrical frame 2 is attached by screws inserted into the holes 0 and 30.
The permanent magnet 4 is attached to the bottom of the electromagnetic coil 7, which is arranged around the permanent magnet 4, by screwing it into the set hole 31 provided in the center of the magnet. A method has been proposed to increase the amplitude when vibrating with the excitation of 7, but there is a problem in that stress is applied to the support plate 3 due to the expansion and contraction of the frame 2 due to temperature changes, causing the vibration to not work properly. be.

The present invention solves these problems and provides a new means for reliably amplifying the vibration of the permanent magnet 4 due to the excitation of the electromagnetic coils 7, 7, thereby ensuring the roll of the dice 5. The purpose is to

For this purpose, the present invention has been developed so that in the automatic dice dispensing device for the vibrator-type automatic mahjong table described above, the support plate 3 made of a spring plate provided at the bottom of the cylindrical frame 2 is as shown in FIG. , one end is connected and fixed to the bottom of the frame 2 and supported in a cantilevered manner, the permanent magnet 4 is assembled and supported on the free end of the frame 2, and a support plate 3a made of a separately formed spring plate is cantilevered. The permanent magnet 4 is supported at the bottom of the frame 2 in a manner similar to the above, and the lower surface side of the permanent magnet 4 is supported by the free end of another support plate 3a so as to be able to move toward and away from the permanent magnet.

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

In Fig. 5, 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 drop opening 1 for dropping tiles into a tile washing hopper is provided, and is closed by a lid 1a that can be opened and closed.

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 notch hole made in the center of the lid 1a. For installation, an 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 inner box 12 are assembled into the inner cavity of the mounting machine frame. (Figure 6).

That is, a window hole 10 is formed in the top plate 12a of the inner box 12, and a cylindrical frame 2 with the axial direction as the vertical direction is provided on the lower surface side of the window hole 10, and a cylindrical frame 2 with an axial direction as the vertical direction is provided with an upper part facing downward and gradually reducing the inner diameter. It is formed into a cone shape that is open downward, and is suspended from the top plate 12a of the inner box 12. The opening 20 on the bottom side of the cylindrical frame 2 is provided with a spring plate having spring properties such as spring steel, and is attached to the bottom of the cylindrical frame 2 on the proximal side as shown in FIG. A support plate 3 formed into a long strip shape with a screw hole 30 for attaching the permanent magnet 4 and a set hole 31 for assembling the permanent magnet 4 at its tip end is inserted into the screw hole 30 on the proximal end side of the support plate 3. By screwing the fitted set screw 33 into a mounting seat provided on the lower surface of the rim of the opening 20 at the bottom of the frame 2, the frame 2 is mounted and supported in a cantilevered manner as shown in FIG. In addition, when the support plate 3 made of a spring plate is attached in a cantilevered manner to the bottom of the frame 2 as described above, the tip portion provided with the set hole 31 is located approximately at the center of the inner cavity of the cylindrical frame 2. It is formed to a length that is located as a free end in the part (6th
figure).

Then, at the free end of this support plate 3,
With the permanent magnet 4 in a state in which the opposing directions of the magnetic poles S and N are along the horizontal direction, the center portion of the opposing direction is secured to the spacer by the set screw 34 inserted into the set hole 31 at the tip of the support plate 3. It is assembled and supported through 35.

Reference numeral 3a denotes a support plate made of a spring plate formed separately from the support plate 3, and is formed in the shape of a strip shorter than the support plate 3 (Fig. 7). A screw hole 30a for fixing with a set screw 33a is formed in a mounting seat provided on the lower surface of the mouth edge of the opening 20, and a protrusion 3 is provided on the upper surface of the tip.
b is formed. And this other support plate 3a
is supported in a cantilevered manner on the bottom of the frame 2 by fixing its base end to the mounting seat with the set screw 33a, and in this state, its free end is attached to the support plate 3. Assembled permanent magnet 4
The upper surface of the protrusion 3b, which is formed in such a length as to face the lower surface side and is installed at the tip thereof, is normally in abutment with the lower surface of the permanent magnet 4. Note that the projection 3b provided at the tip of the separately formed support plate 3a may be provided on the lower surface of the permanent magnet 4, or may be omitted.

Reference numeral 6 denotes a support plate that serves as the bottom plate of the cylindrical frame 2 and supports the dice 5, 5, 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 6 and the transparent plate 10a that covers the upper opening with the two dice 5, 5 inserted therein.

Reference numeral 7 denotes an electromagnetic coil provided on the outer periphery 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 to the top plate 12a of the inner box 12. It is connected to an AC power source through a switch SW which is exposed on the upper surface side and assembled to the top plate 12a of the inner box 12. In addition, switch SW
are provided at four locations so that the four players can operate them individually. In addition, 13 is the switch
This is a mounting plate that supports the lower part of the SW.

The embodiment device configured as described above operates as follows.

Turn on the switch SW to operate the electromagnetic coil 7 so that attractive force and repulsive force are alternately generated between the magnetic poles generated by the electromagnetic coil 7 and the magnetic poles S and N of the permanent magnet 4, As a result, when each end of the permanent magnets S and N repeatedly swings up and down about the center of the permanent magnet 4, the swing causes the permanent magnet 4 to The support plate 3 that supports the permanent magnet 4 at its free end swings up and down significantly using the base end as a fulcrum, thereby increasing the swinging motion of the permanent magnet 4. At this time, the free end side of the separately formed support plate 3a collides with the peripheral edge of the lower surface of the permanent magnet 4, which swings up and down greatly due to the up and down swing of the support plate 3. This elastically supports the permanent magnet 4 and restricts excessive movement of the permanent magnet 4.

Since the support plate 3 and the other support plate 3a that act in this manner are each supported in a cantilever manner on the bottom of the frame 2, they function unchanged even if they expand or contract due to temperature changes.

As explained above, in the invented means,
The swing of the permanent magnet 4 is increased by supporting the support plate 3 made of a spring plate supporting the permanent magnet 4 in a cantilevered manner on the bottom of the frame 2, and supporting the permanent magnet 4 on the free end side of the support plate 3. The lower surface of the permanent magnet 4 is supported on the free end side of the support plate 3a, which is a spring plate separately provided in a cantilevered manner, so as to be able to move toward and away from the lower surface of the permanent magnet 4, thereby preventing excessive swinging by the support plate 3. Therefore, the support plate 6 provided on the top surface of the permanent magnet 4
An automatic system in which the dice 5 are reliably rolled by swinging with a large amplitude in a stable manner, and the dice 5 are reliably rolled even if the support plate 3 expands or contracts due to temperature changes. A dice issuing device is obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of the conventional means, FIG. 2 is a plan view of the same supporting plate, FIG. 3 is a plan view of another supporting plate same as the above, and FIG. 4 is a schematic explanatory diagram of the invented means. 5
Figure 6 is a plan view of an automatic mahjong table that can implement the present invention.
The figure is a longitudinal sectional view of the main parts of the same as above, and FIG. 7 is a plan view of the support plate of the same. Explanation of drawing symbols, A... Automatic mahjong table, a... Mahjong table, b... Automatic dice issuing device, 1... Drop opening, 1
a... Lid body, 10... Window hole, 10a... Transparent plate, 11...
Outer box, 12...Inner box, 12a...Top plate, 13...Mounting plate, 2...Frame, 20...Opening, 3, 3a...Support plate, 3b...Protrusion, 30...Screw hole, 31...Set hole, 32 ...Elongated hole, 33, 33a, 34...Set screw, 35...Spacer, S, N...Magnetic pole, 4...Permanent magnet, SW...Operation switch, 5...Dice, 6
...Support plate, 7...Electromagnetic coil.

Claims (1)

[Scope of utility model registration request] Transparent plates 10a are provided at appropriate locations on the mahjong table a.
A cylindrical frame 2 whose axial direction is the vertical direction is provided on the lower surface side of the window hole 10 covered by the window hole 10, and a support plate 3 made of a resilient plate such as spring steel is attached to the bottom of the frame 2. A permanent magnet 4 is attached to the upper surface of the support plate 3 so that it can freely vibrate relative to the support plate 2, and the permanent magnet 4 is attached to the frame 2 together with the support plate 3, with magnetic poles S and N facing in the horizontal direction. A supporting plate 6 for supporting the dice 5 is attached to the upper surface side of the permanent magnet 4 so that it can freely vibrate, and is formed to have a diameter somewhat smaller than the inner diameter of the bottom of the frame 2. An electromagnetic coil 7 connected to an alternating current power source via an operation switch is disposed at a portion facing the magnetic poles S and N of the permanent magnet 4, and a die is rotatably supported on the upper surface of the support plate 6 in the frame 2. In the automatic dice dispensing device for a mahjong table, the support plate 3 made of the spring plate is supported in a cantilevered manner on the bottom of the cylindrical frame 2, and the permanent magnet 4 is attached to the free end thereof. A supporting plate 3a made of a separately formed spring plate is supported in a cantilevered manner on the bottom of the cylindrical frame 2, and its free end supports the lower surface of the permanent magnet 4 so as to be able to move toward and away from it. Automatic dice issuing device for automatic mahjong tables.