JP2005329221A - Mahjong table - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mahjong table allowing a player with a disability in fingers to stack pieces on the table and play mahjong. <P>SOLUTION: The mahjong table comprises a table body 1, movable mounting plates 8, and a driving mechanism 11 for driving the movable mounting plates upward/downward. The table body 1 has a board face 2 on which mahjong pieces are disposed and openings 6 formed in the shape corresponding to the disposition of the mahjong pieces, at positions on the board face where mahjong pieces are disposed. The movable mounting plates 8 are located at positions corresponding to the openings movably upward/downward, and mahjong pieces are disposed on the upper surfaces of the movable mounting plates. The driving mechanism is structured to position each movable mounting plate at a first height position for stacking a mahjong piece on a lower stage on the upper surface of the movable mounting plate with the inner surface of the opening as a guide, or at a second height position for stacking a mahjong piece on an upper stage on top of the mahjong piece on the lower stage with the inner surface of the opening as a guide, or at a third height position for adjusting the height of the upper surface of the movable mounting plate to the height of the board surface of the table body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mahjong table that makes it easier to stack mahjong tiles on the surface of the table.

  Mahjong is not only fun as a game, but especially elderly people are said to be effective in preventing brain aging. When playing mahjong, it is well known that the tiles must be stacked in a row on the surface of the Maja table and in two rows. Since the fingers are used when stacking the ridges in a row and in two steps, the exercise also helps prevent aging and rehabilitate the fingers.

  By the way, when old people perform mahjong to prevent aging, there are people who can not use their fingers reliably due to trembling of their fingers, etc., such people pile up the kites in a row and in two rows on the mahjong table May not be possible. For this reason, such a person cannot participate in the mahjong game, so that mahjong cannot prevent aging and rehabilitation of fingers.

  An object of the present invention is to provide a mahjong table that allows even a handicapped person to stack cocoons in one row and two steps relatively easily.

The present invention is a mahjong table in which mahjong tiles are arranged in a line at a predetermined position in two rows.
A table body having a board surface on which the mahjong tile is arranged, and an opening corresponding to the arrangement shape of the mahjong tile is formed at a position on the board where the mahjong tile is arranged;
A movable placing plate on which the mahjong tile is arranged on the upper surface, and is provided so as to be movable up and down at a position corresponding to the opening;
A drive mechanism for driving the movable mounting plate in the vertical direction;
The drive mechanism includes a first height position where the lower mahjong tile is stacked on the upper surface of the movable placing board, with the inner peripheral surface of the opening serving as a guide, A second height position where the upper mahjong tile is stacked with the inner peripheral surface of the opening as a guide, and a third height where the upper surface of the movable mounting plate is flush with the surface of the table body. The mahjong table is characterized in that it is configured to be positioned in the vertical position.

  The drive mechanism includes guide means for holding the movable mounting plate so as to be movable up and down, a cam body rotatably provided with a cam surface in contact with a lower surface of the movable mounting plate, and the movable mounting plate. A biasing member that biases the lower surface of the plate in a direction to contact the cam surface of the cam body, and the cam body is rotated to position the movable mounting plate at any one of the first to third positions. It is preferable that an operating member is provided.

  The cam body is provided with the cam surface in contact with the lower surface of both ends in the longitudinal direction of the movable mounting plate, and the operation member is rotatably provided between the pair of cam bodies. The member and the pair of cam bodies are preferably provided with pulleys, and belts that transmit the rotation of the operation member to the pair of cam bodies are preferably stretched on the pulleys.

The cam body is provided with a cam surface in contact with a lower surface of a middle portion in the longitudinal direction of the movable mounting plate, and the operation member is provided on a support shaft that rotatably supports the cam body,
The cam body is provided with a guide groove engaged with a positioning pin, and the positioning pin abuts against one end and the other end of the guide groove at the second position and the third position, respectively. It is preferable that the rotation is restricted.

  It is preferable that an engaging member is provided that elastically engages with an engaging portion formed on the cam body when the movable mounting plate is at the first height position.

  According to the present invention, the movable mounting plate on which the soot is stacked can be positioned at a height at which the lower soot can be easily stacked with the inner peripheral surface of the opening as a guide, and at a height at which the upper soot can be easily stacked. Even people who have trembling can easily stack firewood in a row and in two tiers.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 7 show a first embodiment of the present invention. The mahjong table shown in FIGS. 1A and 1B includes a table body 1. The table body 1 has a board surface 2 having a square planar shape, and a frame body 3 surrounding the periphery of the board surface 2 is provided on the periphery of the board surface 2. The table body 1 is supported at a predetermined height by a support column 4. A curtain plate 5 is provided on the lower surface of each side of the table body 1, and a point bar holder 5 a is provided at one end in the longitudinal direction of each curtain plate 5 so as to be freely inserted and removed.

  At positions corresponding to the respective side surfaces of the plate surface 2 of the table body 1, four elongated openings 6 are formed in parallel with the respective sides of the table body 1 as shown in FIG. 3. On the lower surface of the table body 1, a pair of mounting plates 7 having an L-shaped cross section and approximately the same length as the opening 6 fix one side on both sides in the width direction of each opening 6, and the other side has a predetermined side. It is provided to face each other at intervals.

  A movable mounting plate 8 formed in a rectangular band shape slightly smaller than the opening 6 is provided in the opening 6 so as to be movable up and down by a drive mechanism 11. As shown in FIGS. 6A to 6C, the drive mechanism 11 has guide means 12 that supports the movable mounting plate 8 so as to be movable up and down.

  The guide means 12 has a pair of guide shafts 13 suspended from the lower surfaces of both end portions in the longitudinal direction of the movable mounting plate 8. A guide member 14 having a guide hole 15 is provided between opposite sides of the pair of mounting plates 7. The guide shaft 13 is slidably supported in the guide hole 15. Accordingly, the movable mounting plate 8 is supported so as to be movable up and down, and can enter the opening 6 formed in the panel surface 2 of the table body 1 or can be retracted downward.

  As shown in FIG. 2 and FIGS. 7A to 7C, a spring as an urging member is provided between both end portions of the movable mounting plate 8 and the lower end portion of the other side of the one mounting plate 7. 16 is stretched. The movable mounting plate 8 is urged by the spring 16 in the downward direction, that is, the direction into the opening 6.

  At both ends between the other sides of the pair of mounting plates 7, cam bodies 17 having the same shape are rotatably supported in the same state at inner positions in the longitudinal direction from the end where the guide shaft 13 is provided. Has been. As shown in FIGS. 4A and 4B, the cam surface 18, which is the outer peripheral surface of the cam body 17, is elastically brought into contact with the lower surface of the movable mounting plate 8 by the biasing force of the spring 16. Yes. The cam surface 18 has a first abutting portion 18a for holding the movable mounting plate 8 at a first height position, a second height position, and a third height position, which will be described later. A contact portion 18b and a third contact portion 18c are formed.

  As shown in FIG. 7A, the first height position is a position where the movable mounting plate 8 is lower than the upper surface of the opening 6 and higher than the lower surface, and the second height position is 7 (b), the movable mounting plate 8 is below the lower surface of the opening 6, and the upper surface of the lower ridge P1 stacked on the movable mounting plate 8 is the height direction in the opening 6. It is a position which is located in the middle part, and the lower end part of the upper ridge P2 stacked on the lower ridge P1 is in the opening 6. The third height position is a position where the upper surface of the movable mounting plate 8 is substantially the same height as the upper surface of the opening 6 as shown in FIG.

  As shown in FIGS. 4A and 4B, a toothed first pulley 21 is integrally provided on one side surface of each cam body 17. A toothed second pulley 22 is rotatably supported at a position of an intermediate portion in the longitudinal direction of the mounting plate 7.

  As shown in FIG. 3, one end of the operation shaft 23 is fitted to the second pulley 22. The other end of the operation shaft 23 protrudes from the outer surface of the side plate 5 of the table body 1. An operation member 24 is attached to the protruding end of the operation shaft 23. Therefore, the second pulley 22 can be rotated by the operation member 24.

  The second pulley 22 is integrally provided with a stopper 25 whose front end protrudes radially outward from the outer peripheral surface of the pulley 22. When the second pulley 22 is rotated about 90 degrees clockwise or counterclockwise by the operation member 24 on the inner surface of one mounting plate 7, the stopper 25 comes into contact with the second pulley 22. A first pin 26 and a second pin 27 that prevent rotation are provided.

  The pair of first pulley 21 and second pulley 22 is stretched with a timing belt 28 having an uneven surface that engages with the teeth of these pulleys. Accordingly, if the second pulley 22 is rotated by the operation member 24, the rotation can be transmitted to the pair of first pulleys 21 via the timing belt 28.

  Next, FIG. 7 (a) to FIG. 7 (c) showing a procedure in which a mahjong table having the above-described structure is used by a person with a handicapped hand such as an elderly person (player) to arrange the tiles on the board surface 2 of the table body 1 in two upper and lower stages. Will be described with reference to FIG.

  First, the movable mounting plate 8 is first held at the first height position as shown in FIG. That is, the operation member 24 is erected almost vertically, and the first contact portion 18 a of the cam body 17 is brought into contact with the lower surface of the movable placement plate 8, so that the movable placement plate 8 is brought into the opening 6. Hold at the height you want.

  In this state, a lower ridge P1 is stacked on the upper surface of the movable mounting plate 8. At that time, since the periphery of the movable mounting plate 8 is surrounded by the inner peripheral surface of the opening 6, when the lower ridge P 1 is arranged on the upper surface of the movable mounting plate 8, the inner periphery of the opening 6 is arranged. Can be arranged with the surface as a guide. Therefore, even if the player's finger shakes, the kite P1 placed on the upper surface of the movable mounting plate 8 will not move out of position from the upper surface of the movable mounting plate 8. They can be arranged on the movable mounting plate 8.

  If the lower ridge P1 is stacked on the movable mounting plate 8, the operation member 24 is rotated 90 degrees counterclockwise as indicated by an arrow in FIG. 7B. That is, the operation member 24 is rotated until the stopper 25 provided integrally with the second pulley 22 hits the first pin 26.

  As a result, the second contact portions 18b of the pair of cam bodies 18 are in contact with both end portions of the lower surface of the movable mounting plate 8, so that the movable mounting plate 8 is lower than the first height position. 2 is held at the height position. That is, the second height position is a position where the lower ridge P1 stacked on the upper surface of the movable mounting plate 8 is lower than the upper surface of the opening 6 and higher than the lower surface. As a result, the periphery of the upper surface of the lower ridge P1 is surrounded by the inner peripheral surface of the opening 6.

  In this state, if the upper ridge P2 is stacked on the upper surface of the lower ridge P1, the upper ridge P2 can be stacked using the inner peripheral surface of the opening 6 as a guide. Therefore, even in that case, even if the player's fingers shake, the upper heel P2 stacked on the upper surface of the lower heel P1 does not move to the position where it falls from the lower heel P1, The basket P2 can be reliably stacked on the lower basket P1 of the movable mounting plate 8.

  When the upper and lower ridges P1 and P2 are stacked on the upper surface of the movable mounting plate 8 in this way, the operation member 24 in the state of FIG. 7B is indicated by an arrow in FIG. 7C. The stopper 25 is rotated 180 degrees clockwise until the position where the stopper 25 hits the second pin 27 to the third height position.

  In the third height position, the upper surface of the movable mounting plate 8 is substantially the same height as the upper surface of the opening 6, that is, the panel surface 2. Therefore, the player can play by taking the two upper and lower ridges P1 and P2 stacked on the movable mounting plate 8 in order.

  In this way, the upper and lower ridges P1 and P2 are stacked on the movable mounting plate 8 that is driven up and down, and when the lower ridge P1 and the upper ridge P2 are stacked, the height of the movable mounting plate 8 is increased. By changing the height, these ridges can be stacked as guides for the inner peripheral surface of the opening 6.

  Therefore, even if a person with trembling fingers enjoys mahjong also as rehabilitation, the heels P1 and P2 are prevented from being greatly displaced from the movable mounting plate 8 and falling due to trembling of the fingers. Therefore, the user can stack the bags P1 and P2 on the movable mounting plate 8 in two upper and lower stages while also serving as finger rehabilitation.

  The height of the movable mounting plate 8 can be changed by a pair of cam bodies 17 that are in contact with both ends of the movable mounting plate 8 in the longitudinal direction. That is, the movable mounting plate 8 is supported at both ends in the longitudinal direction by the cam body 17 and the height position is set. For this reason, the movable mounting plate 8 does not rattle with respect to the longitudinal direction. Therefore, when the movable mounting plate 8 is played at the third height position, the movable mounting plate 8 is loaded on the movable mounting plate 8. The scarlet P1 and P2 are not destroyed.

  A timing belt 28 is stretched between a first pulley 21 provided on the pair of cam bodies 17 and a second pulley 22 provided on the operation member 24, and the pair of cam bodies 17 is moved by operating the operation member 24. It was made to interlock. Therefore, since the pair of cam bodies 17 can be reliably rotated in synchronization, the height can be changed without tilting the movable mounting plate 8 with respect to the longitudinal direction. In addition, since the two cam bodies 17 can be rotated by one operation member 24, the operation can be easy.

FIGS. 8A to 8C and FIGS. 9A and 9B show a second embodiment of the present invention. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
This second embodiment is a modification of the drive mechanism 11 that drives the movable mounting plate 8 up and down. In the drive mechanism 11A of the second embodiment, one cam body 17A is provided at a position corresponding to the lower surface of the midway portion of the movable mounting plate 8 in the longitudinal direction. The cam body 17A is attached to the support shaft 31 as shown in FIG.

  The support shaft 31 is rotatably supported by a pair of bearings 32 that are fixedly attached to the inner surfaces of the pair of attachment plates 7 by screws 32a. The cam body 17A is fixedly attached to a portion of the support shaft 31 between the pair of bearings 32.

  One end of the support shaft 31 protrudes from the outer surface of the side plate 5 of the table body 1, and the operation member 24 is attached to the protruding end. Accordingly, when the support shaft 31 is rotated by the operation member 24, the cam body 17A is interlocked with the rotation.

  In the cam body 17A, the movable mounting plate 8 is provided with a first height position (middle stage), a second height position (lower stage), and a third height position (upper stage), as in the first embodiment. A first abutting portion 18a, a second abutting portion 18b, and a third abutting portion 18c are formed to hold the first and second abutting portions 18a and 18c, respectively.

  As shown in FIG. 9B, a pair of bearings 33 are provided at both ends in the width direction of the lower surface of the middle part in the longitudinal direction of the movable mounting plate 8, and a roller 34 is provided in the middle part of these bearings 33. Both end portions of the support shaft 35 are rotatably supported.

  The roller 34 is in contact with the outer peripheral surface of the cam body 17A. Therefore, if the cam body 17A is rotated by the operation member 24, the movable mounting plate 8 is moved up and down by the rotation. That is, the movable mounting plate 8 can be changed in height to the first position, the second position, and the third position, as in the first embodiment.

  An arc-shaped recess 35 is formed on the lower surface of the movable mounting plate 8 corresponding to the roller 34 so that the outer peripheral surface of the roller 34 does not hit the lower surface of the movable mounting plate 8. I have to.

  A guide groove 37 is formed along the circumferential direction in a radially intermediate portion of the cam body 17A. A pin 38 is inserted into the guide groove 37. One end and the other end of the pin 38 are attached and fixed to the pair of attachment plates 7 by screws 39, respectively.

  As shown in FIG. 8B, the pin 38 is configured such that when the second contact portion 18b of the cam body 17A is brought into contact with the roller 34 so that the movable mounting plate 8 is in the second position, The cam body 17A is prevented from further rotating in the direction of arrow A by hitting one end of the guide groove 37. Also, as shown in FIG. 8C, when the second contact portion 18c of the cam body 17A is brought into contact with the roller 34 so that the movable mounting plate 8 is in the third position, the guide groove The cam body 17 </ b> A is prevented from further rotating in the direction of arrow B by hitting the other end of 37.

  As shown in FIG. 8A, when the first contact portion 18a of the cam body 17A is brought into contact with the roller 34 so that the movable mounting plate 8 is in the first position, the cam body 17A is formed. The balls 42 as the engaging members are elastically engaged with the engaging holes 41 as the engaging portions.

  As shown in FIG. 9A, the engagement hole 41 is formed in the periphery of the cam body 17A so as to penetrate in the thickness direction. The ball 42 is provided on a disk-shaped holding body 44 fixed to the inner surface of one mounting plate 7 with a screw 43. That is, the cylindrical body 45 is provided at the center of the holding body 44. The end of the cylindrical body 45 is narrowed to a diameter smaller than that of the ball 42, and the ball 42 is accommodated therein. The ball 42 is urged by a spring 46 so that a part of the ball 42 protrudes from the front end opening of the cylindrical body 45.

  Then, as shown in FIG. 8A, when the cam body 17A is rotated and the movable mounting plate 8 is raised to the first position by the first contact portion 18a, the ball 42 is moved to the cam body 17A. The engagement hole 41 is elastically engaged. Therefore, the feeling that the ball 42 engages with the engagement hole 41 is transmitted to the operator's hand through the operation member 24 and the rotational resistance of the operation member 24 increases. Therefore, the movable mounting plate 8 is moved to the first position. It can be surely positioned at the position.

  According to such a configuration, the movable mounting plate 8 can be positioned at the first to third positions by one cam body 17A, so that the first embodiment using two cam bodies 17 is adopted. Compared to the configuration, the configuration can be simplified.

  In addition, since the ball 42 is elastically engaged with the engaging hole 41 of the cam body 17 when the movable mounting plate 8 is positioned at the first position in order to load the lower ridge P1, the movable mounting plate 8 8 can be reliably positioned at the first position.

The 1st Embodiment of this invention is shown, (a) is a top view of a mahjong table, (b) is a side view. An enlarged side view of the mahjong table, partially broken. The side view which expands and shows the attachment structure of an operation member. (A) is a front view of a cam body, (b) is a side view. (A)-(c) is a three-view figure of the 2nd pulley in which the stopper was provided integrally. (A) is a top view of a movable mounting member, (b) is a front view, (c) is a sectional view showing a state in which the movable mounting member is supported on the table body so as to be movable up and down. (A)-(c) is a figure for demonstrating the procedure when stacking | assembling a ridge on the upper surface of a movable mounting board. (A)-(c) is explanatory drawing which shows sequentially the state which positioned the movable mounting board which shows the 2nd Embodiment of this invention in the 1st thru | or 3rd position. (A) is a top view of the part to which the cam body of a pair of attachment board was attached, (b) is a side view of the movable mounting board which shows the attachment state of a roller.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Table body, 2 ... Board surface, 6 ... Opening part, 7 ... Mounting plate, 8 ... Movable mounting plate, 11, 11A ... Drive mechanism, 12 ... Guide means, 13 ... Guide shaft, 14 ... Guide member, 16 ... Spring (biasing member), 17, 17A ... cam body, 18 ... cam surface, 21 ... first pulley, 23 ... operating shaft, 24 ... operating member, 25 ... stopper.

Claims (5)

A mahjong table in which mahjong tiles are arranged in a row and in two rows at the top and bottom,
A table body having a board surface on which the mahjong tile is arranged, and an opening corresponding to the arrangement shape of the mahjong tile is formed at a position on the board where the mahjong tile is arranged;
A movable placing plate on which the mahjong tile is arranged on the upper surface, and is provided so as to be movable up and down at a position corresponding to the opening;
A drive mechanism for driving the movable mounting plate in the vertical direction;
The drive mechanism includes a first height position where the lower mahjong tile is stacked on the upper surface of the movable placing board, with the inner peripheral surface of the opening serving as a guide, A second height position where the upper mahjong tile is stacked with the inner peripheral surface of the opening as a guide, and a third height where the upper surface of the movable mounting plate is flush with the surface of the table body. A mahjong table, which is configured to be positioned in the vertical position.   The drive mechanism includes guide means for holding the movable mounting plate so as to be movable up and down, a cam body rotatably provided with a cam surface in contact with a lower surface of the movable mounting plate, and the movable mounting plate. A biasing member that biases the lower surface of the plate in a direction to contact the cam surface of the cam body, and the cam body is rotated to position the movable mounting plate at any one of the first to third positions. The mahjong table according to claim 1, further comprising an operation member that performs the operation.   The movable mounting plate has a pair of cam bodies provided with the cam surfaces in contact with the lower surfaces of both ends in the longitudinal direction, and the operation member is rotatably provided between the pair of cam bodies. The operation member and the pair of cam bodies are respectively provided with pulleys, and belts for transmitting the rotation of the operation member to the pair of cam bodies are stretched on the pulleys. Item 2. Mahjong table. The cam body is provided with a cam surface in contact with a lower surface of a middle portion in the longitudinal direction of the movable mounting plate, and the operation member is provided on a support shaft that rotatably supports the cam body,
The cam body is provided with a guide groove engaged with a positioning pin, and the positioning pin abuts against one end and the other end of the guide groove at the second position and the third position, respectively. The mahjong table according to claim 2, wherein the rotation of the mahjong table is limited.   An engagement member that elastically engages with an engagement portion formed on the cam body when the movable mounting plate is at the first height position is provided. Item 5. Mahjong table.

Images