JPH0314678Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a random number generator that can be used in place of dice during games or as a calculation practice device.

《Prior art》 Conventionally, a number string is displayed on multiple rotating bodies, one number in the number string is randomly shown through a window hole in a casing, and the number displayed in the window hole is used to display a number string. An example of a random number generator that allows calculation practice, etc. is disclosed in Japanese Utility Model Application Publication No. 57-22771.

In this conventional type, a rotating ring with numbers displayed on its circumference is rotated by the elastic restoring force of a spring body, two ratchets are arranged coaxially with the rotating ring, and an engagement mechanism that engages each ratchet is arranged. The rotating body is configured to be rotated intermittently by releasing the claw with a release member.

[Problem to be solved] However, in the conventional system, the rotational force of the rotary wheel is obtained from the spring force of the spring that has accumulated pressure, and the engagement between the ratchet and the engaging pawl that is engaged with it is released by a release member. Since the rotation control mechanism is released by the operation of , the number of parts that make up the rotation control mechanism is large and it becomes complicated. Furthermore, since the circumferential surface of the rotary ring is used as a numeric display surface, there is also the problem that the depth and height dimensions become large.

《Means for solving the problems》 The present invention has a simple structure, can display numbers randomly, and has a small size.
To this end, a rotating wheel is formed of synthetic resin, and includes a numeric display plate section with a numeric string displayed on its upper surface, a rotating shaft section, a driving gear section, and a locking gear section. is positioned so as to surround the axis of rotation, and a pair of rotating wheels are supported horizontally rotatably on diagonal lines within the casing, and the number displayed on the top of the number display plate is displayed on one of the rotating wheels. The upper part of the number on the other rotating wheel is located on the periphery side, and the upper part of the number on the other rotating wheel is located on the rotation axis side, and the rack that meshes with the drive gear part, the lock tool that meshes with the lock gear part, and the rack are returned to the starting position. An operating tool having a return spring for the lock is integrally formed of synthetic resin, the rack and the locking tool are positioned in a positional relationship that prevents simultaneous engagement, a rack guide is provided in the casing, and the rack is connected to the drive gear of the rotating wheel. The invention is characterized in that it is configured to move forward in an engaged state and to return in a non-meshing state.

<Operation> In the present invention, the operating tool for controlling the rotation of the rotary wheel is integrally formed of synthetic resin, and the rack member is configured to take different movement paths when going forward and when going back. Because of this, the rack rotates the rotary wheel when it moves outbound, but when it goes back, it returns to the starting position by the spring force of the return spring without affecting the rotation of the rotary wheel. This allows the rotating wheels to rotate freely, so a difference in rotational speed occurs between the pair of rotating wheels due to the speed at which the rack leaves the drive gear and the difference in friction between the shaft of the rotating wheel and the bearing. It turns out. Then, when the operating tool (rack) returns to the starting position, the locking tool meshes with the locking gear, and the numbers displayed on the display plate of the rotary wheel are displayed on the display window of the casing.

Also, among a pair of rotating wheels, the direction of the numbers displayed on the display board of one rotating wheel is opposite to the direction of the numbers displayed on the display board of the other rotating wheel. Coupled with the arrangement of the rotating wheels on the diagonal of the casing, the images are displayed side by side in the same direction within the display window holes opened side by side in the casing.

《Example》 Fig. 1 shows an exploded perspective view of the random number generator, and Fig. 2 shows a perspective view of the assembled state. It consists of a casing 3 consisting of a box 2 having a recessed portion, a pair of rotary wheels 4 housed within the casing 3, and an operating tool 5 for controlling the rotation of the rotary wheels 4.

As shown in FIG. 3, each rotating wheel 4 consists of a number display plate section 6 having a number string embossed on its upper surface, a drive gear section 7, a lock gear section 8, and a rotating shaft section 9. drive gear section 7, lock gear section 8,
The rotating shaft portion 9 is integrally formed of synthetic resin. The numeral display plate section 6 is made of synthetic resin and is assembled using the tooth grooves of the lock gear section 8 so as to be non-rotatable relative to each other.

Numbers 0 to 9 are concentrically formed on the upper surface of the numeric display board 6 in a embossed manner. Each number string is arranged so that the head of the number is located on the outer peripheral edge side of one rotating wheel 4R, and the head of the number is located on the rotation axis side of the other rotating wheel 4L. The direction of the number is determined.

The operating tool 5 is integrally formed of synthetic resin,
A push operation block 10 supported outside the casing 3 so as to be retractable, two racks 11 formed so as to be able to mesh with the drive gear portions 7 of each rotating wheel 4, a return spring 12 that pushes the operating tool 5 back to the starting position, and an operating block 10. It consists of an egress/egress guide 13 for linearly moving the tool 5 in and out, and two lock parts 14 formed on the egress/egress guide 13. One of the two racks 11
a is extended from the pressing operation block 10, and the other rack 11b is extended from the egress/exit guide 13, and each rack 11a, 11b is formed to be movable in the vertical direction, and is connected to the egress of the operating tool 5. It is formed so that it can be displaced in a direction perpendicular to the retraction direction on a plane. Also, at the tip of this rack 11,
A guide pin 16 is provided in a protruding manner to be inserted into a guide groove 15 from above, which will be described later. The lock part 14 is the operating tool 5
It is formed in such a positional relationship that it can fit into the lock gear portion 8 of the rotary wheel 4 only when it is in the start position.

On the base plate 1 of the casing 3, pivot bosses 17 for the rotary ring 4 are formed diagonally between the corners that are not notches in a left and right divided manner, and the guide grooves 15 are formed in the vicinity of the pivot hubs 17. is formed, and a numerical display window 1 is formed on the top surface of the box 2 of the casing 3.
8 are opened at the center in the front-rear direction at appropriate intervals on the left and right. The guide grooves 15 provided on the substrate 11 are each formed into a parallelogram-shaped closed loop, and the bottom wall of each guide groove 15 has a gently sloped surface 19 and a steeply sloped surface 20 that are point symmetrical, as shown in FIG. It is formed in the shape of Therefore, the guide pin 16 of the rack 11 guided by the guide groove 15 is guided by the guide groove 1.
You will have to move in one direction within 5, making it easy 11
The motor moves in a state in which it meshes with the drive gear part 7 of the rotary wheel 4 during the forward movement, and moves away from the drive gear part 7 during the return movement.

As a result, when the operating tool 5 is pressed, both rotating wheels 4 are driven by the rack 11, and after the operating tool is pushed all the way, when the pushing force of the operating tool 5 is removed, the operating tool is moved by the accumulated force of the return spring 12. You will return to your starting position. When the operating tool returns, the rack 11 and the drive gear 7 do not mesh with each other, so the rotary wheel 4 continues to rotate freely. Then, when the operating tool 5 reaches the start position, the lock part 14 engages with the lock gear part 8, so the rotating wheel 4 stops rotating, and the numbers on the rotating wheel 4 are displayed in the window hole 18 of the casing 3. It will be displayed.

In addition, in order to display the numbers on the display window 18 without shifting, it is necessary to make the number of numbers displayed on the number display plate part 6 and the number of teeth of the lock gear part 8 equal to each other. . Furthermore, a transparent synthetic resin plate is fitted into the display window 18 to prevent dust and the like from entering the casing 3.

In the above embodiment, each number from 0 to 6 is displayed on the number display board 6.
We have displayed the number 9 to represent two-digit numbers from 00 to 99, but we have decided to use it as two single-digit numbers as a problem generator for practicing calculations of addition, subtraction, multiplication, and division. It is possible. Further, the numbers 1 to 6 can be displayed on each display board section 6 to serve as a substitute for two cyclos.

<<Effects>> In the present invention, since the operating tool and the rotating ring are made of synthetic resin, the number of component parts can be reduced. Moreover, since the rotation of the rotary ring is controlled only by the reciprocating motion of the operating tool, the rotation control mechanism is also simple, and the overall structure can be simplified.

In addition, numbers are displayed on the top surface of the rotating ring, which allows the rotating ring to rotate horizontally, reducing the thickness of the device.In addition, since the rotating ring is placed on the diagonal line of the casing in plan view, the external dimensions can be reduced. Can be made smaller.

Furthermore, the numbers on the rotating wheels are oriented so that the head of the number is on the shaft side for one rotating wheel, and the head of the number is on the periphery side for the other rotating wheel.
Coupled with the fact that the rotating wheels are arranged diagonally, numbers are displayed in the same direction through the window holes opening side by side in the casing, making it possible to use the machine without feeling out of place.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view of the assembled state, FIG. 3 is a partially cutaway perspective view of the rotating wheel, and FIG. FIG. 5 is a plan view showing the relationship between the rotary ring and the operating tool, and FIG. 6 is a vertical sectional view of the main part corresponding to the line in FIG. 5. 3... Casing, 4, 4L, 4R... Rotating wheel, 5... Operation tool, 6... Number display board, 7...
Drive gear part, 8... Lock gear part, 9... Rotating shaft part, 11... Rack part, 12... Return spring part, 1
4...Lock tool, 15...Rack guide section, 18...
...Number display window.

Claims (1)

[Claims for Utility Model Registration] 1. A rectangular parallelepiped-shaped casing 3 with two numerical display windows 18 opened on the top surface, and a pair of synthetic resin rotating wheels 4 supported by the casing 3 so as to be horizontally rotatable.
and a synthetic resin operating tool 5 for controlling the rotation of the rotating wheels 4, and each rotating wheel 4 has a rotating shaft portion 9, a drive gear portion 7, a number display plate portion 6, and a lock gear portion 8. At the same time, the number display plate section 6 is positioned so as to surround the rotation axis, and the rotating wheel 4 is arranged on a diagonal line in the casing 3 in a plan view, so that the number display plate section 6 is positioned so as to surround the rotation axis. One of the numbers in the casing 3 number display window 1
8, and the upper part of the number displayed on one rotating wheel 4R is located on the periphery side, while the other rotating wheel 4L
The upper part of the number indicated in is located on the rotation axis side, and a rack part 11 that can be fitted to and removed from the drive gear part 7 of each rotating wheel 4, and a rotating lock that can be fitted to and removed from the lock gear part 8 of each rotating ring 4. The tool 14 and the return spring part 12 are integrally formed in the operating tool 5, and each rack part 11 and each locking tool 14 are formed in a position to selectively engage with the rotating ring 4, and the operating tool 5 is The rack part 11 is configured to be able to swing toward and away from the rotating wheel 4 in the radial direction, and the rack part 11 is guided to the meshing position during forward movement.
A rack guide part 15 is formed in the casing 3 to guide the gear to the disengaged position during the go-around, and when the operation tool 5 is operated to go back and forth, the locking tool 14 is separated from the lock gear part 8, and the rack part 11 is connected to the drive gear part 7. When the operating tool 5 engages with the rotating wheel 4 and rotates, the lock portion 11 moves back in a state separated from the driving gear portion 7, and the operating tool 5 returns to its initial position, thereby locking the locking tool 14. A random number generator characterized in that it is configured to engage with a lock gear part 8. 2. The random number generator according to claim 1 of the utility model registration claim, in which the number display plate part 6 is externally fitted and fixed to the lock gear part 8.