Automatic tile changing device for mahjong table

Abstract

The utility model relates to an automatic tile changing device for a mahjong table, which is characterized in that a dice disc is arranged as a rotating structure, a dice disc shell is arranged at the edge of the dice disc, an automatic rotating device and a control circuit are arranged below the dice disc, and a numerical control rotating device is arranged on the dice disc shell. The numerical control rotating device sends data to the control circuit, the control circuit controls the automatic rotating device, the automatic rotating device controls the dice disc to rotate to a designated position, and the dice disc is further provided with limiting structures for containing mahjong tiles in four directions. The limiting structure is a groove matched with the mahjong tiles in shape or an electromagnet is arranged below the position where the mahjong tiles are placed, when the tile changing function is started, the electromagnet has magnetic force and can attract the mahjong tiles placed above the dice disc, and then the mahjong tiles rotate to the designated position along with the dice disc. The full-automatic mahjong table achieves full automation of the game function of the mahjong table.

Description

Technical Field

[0001] The utility model relates to the field of automatic rotation of a mahjong table, in particular to an automatic card changing device for a mahjong table. Background Art

[0002] Mahjong is played in different ways in different regions. For example, in some areas, there is a three-card exchange rule, which means that after the card-drawing phase is over, the four players on the field need to pick out three cards of the same suit from their hands to exchange. The card exchange is determined by the odd or even results of the dice thrown by the players in the previous game.

[0003] In current mahjong gameplay, when three mahjong tiles need to be exchanged, the four mahjong players must manually exchange their own mahjong tiles to the other three players. Existing mahjong tables, aside from automatic shuffling and other functions, do not have a function that can handle the three-tile exchange rule. Therefore, a mahjong table that can handle the three-tile exchange rule is needed to achieve fully automated mahjong gameplay. Utility Model Content

[0004] The utility model aims to provide an automatic card changing device for a mahjong table, so as to realize the full automation of the three-card changing rule in the mahjong game.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An automatic card changing device for a mahjong table comprises: a dice tray and a dice tray housing installed along the edge of the dice tray; the dice tiles are rotating structures, and an automatic rotating device and a control circuit are arranged below the dice tiles; a numerically controlled rotating device is respectively arranged at four positions on the dice tray housing, the numerically controlled rotating device being electrically connected to the control circuit, the control circuit controlling the automatic rotating device, and the automatic rotating device controlling the rotation of the dice tray to a specified position; and limit structures for placing mahjong tiles are arranged at four positions on the dice tray.

[0007] Furthermore, the limiting structure is a groove adapted to the shape of the mahjong tiles, or the limiting structure is an electromagnet arranged below the position where the mahjong tiles are placed, and the CNC rotation device is electrically connected to the electromagnet to control the power on and off of the electromagnet. When the dice tray starts to rotate, the electromagnet is energized, and the mahjong tiles placed on the dice tray are attracted by magnetic force and rotated with the dice tray. After the rotation and card replacement are completed, the magnetic force disappears.

[0008] Furthermore, the automatic rotation device includes a main control device equipped with a control chip, and also includes a CNC motor, a telescopic rotating rod connected to the CNC motor, and a bearing column connected to the telescopic rotating rod. After receiving the control instruction, the main control device controls the rotation of the CNC motor, the CNC motor drives the telescopic rotating rod, and the telescopic rotating rod drives the bearing column to rotate or extend, thereby driving the dice plate to rotate or lift.

[0009] Furthermore, the numerically controlled rotation device includes an input module for inputting data and a central control module for sending the data input by the input module to the control circuit, wherein the central control module is connected to the input module and the control circuit.

[0010] Furthermore, a telescopic rotating rod protective cover is installed on the outside of the telescopic rotating rod, and the outside of the telescopic rotating rod protective cover is a power cord protective cover. A power cord is installed between the telescopic rotating rod protective cover and the power cord protective cover, and the power cord is connected to the main control device.

[0011] Furthermore, a funnel shell is installed below the dice tray shell, and an upper clutch electromagnet is installed in the funnel shell. The upper clutch electromagnet is connected to the dice tray and fixedly connected to the bearing column and driven by the bearing column. A lower clutch electromagnet is correspondingly installed below the upper clutch electromagnet. The lower clutch electromagnet is installed on the bearing column through a bearing and can move up and down along the bearing column. When the mahjong table card changing function is started, the upper clutch electromagnet is separated from the lower clutch electromagnet. When other functions of the mahjong table are started, the upper clutch electromagnet and the lower clutch electromagnet are attracted to make the other function circuits conductive.

[0012] Furthermore, the input module is a rotation button.

[0013] Furthermore, when the card changing function is started, the automatic rotation device controls the dice tray to rotate in the dice card housing to change cards.

[0014] Beneficial effects of the utility model:

[0015] (1) The utility model provides a dice tray with a rotating structure and a dice tray housing provided at the edge of the dice tray. An automatic rotating device and a control circuit are provided below the dice tray, and a numerical control rotating device is provided on the dice tray housing. The numerical control rotating device sends data to the control circuit, and the control circuit controls the automatic rotating device. The automatic rotating device controls the rotation of the dice tray to a specified position. When the mahjong table card exchange function is started, there is no need to manually exchange cards to all sides. It is only necessary to place the mahjong tiles to be exchanged on the four sides of the dice tray and press the rotation button. The automatic rotating device receives the control rotation instruction issued by the numerical control rotating device, and the automatic rotating device controls the dice tray to rotate in the dice tray housing. At the same time, the mahjong tiles placed on the dice tray will be rotated to the specified position.

[0016] (2) The present invention is also provided with limiting structures for placing mahjong tiles in four directions. The limiting structures are designed to prevent the mahjong tiles to be exchanged placed on the dice plate from falling due to rotation. The limiting structures are grooves that are adapted to the shape of the mahjong tiles or electromagnets are provided below the position where the mahjong tiles are placed. When the card exchange function is activated, the electromagnet has a magnetic force that can absorb the mahjong tiles placed on the dice plate, ensuring that the mahjong tiles will not be displaced due to the rotation of the dice plate. Then, the mahjong tiles can be rotated to the designated position with the dice plate. After the rotation and card exchange are completed, the electromagnetic force disappears. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the dice tray of the utility model;

[0019] Figure 3 This is a schematic diagram of the appearance of a mahjong table of the present invention;

[0020] Figure 4 It is a module schematic diagram of the control mechanism of the utility model.

[0021] 1. Dice plate, 101. Rotate button, 102. Shuffle button, 103. Restore button, 104. Main control lift button, 105. Card outlet;

[0022] 2. Dice tray housing; 3. Motor; 4. Funnel housing; 5. Upper clutch electromagnet; 6. Upper light-controlled power point; 7. Lower clutch electromagnet; 8. Lower light-controlled power point; 9. Power cord plug; 10. Bearing; 11. Main control lifting rod; 12. Telescopic rotating rod; 13. Telescopic rotating rod protective cover; 14. Power cord protective cover; 15. Bearing column; 16. Shuffle turntable; 17. CNC motor; 18. Main control device.

[0023] 19. CNC rotation device, 191. Input module, 192. Central control module;

[0024] 20. Control circuit;

[0025] 21. Automatic rotation device;

[0026] 22. Electromagnet. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0028] This embodiment proposes a mahjong table automatic card changing device, such as Figure 1-Figure 4 As shown, in the current intelligent mahjong table functions, the existing dice tray includes function buttons such as a wash button 102, a main control lift button 104, and a restore button 103, each of which realizes different functional requirements in the game. While the original functions remain unchanged, the present invention configures the dice tray 1 as a rotatable structure, retaining the dice tray housing 2 installed along the edge of the dice tray 1. When the mahjong table card exchange function is activated, the mahjong tiles to be exchanged are placed on the four sides of the dice tray 1. The dice tray 1 rotates, while the dice tray housing 2 does not rotate. A funnel housing 4 is installed below the dice tray housing 2. Under the dice tray housing 2, an automatic rotation device 21 and a control circuit 20 are installed below the dice tray 1 to control the rotation of the mahjong machine dice tray 1.

[0029] In this embodiment, a numerically controlled rotating device 19 is mounted on the non-rotating housing 2 of the dice tray 2 in each of the four directions (east, south, west, and north). The device transmits data to the control circuit 20. When players need to exchange cards with each other during a mahjong game, they input a control instruction to one of the numerically controlled rotating devices 19, which is then transmitted to the control circuit 20 disposed below the dice tray 1. The control circuit 20 then controls the automatic rotating device 21 according to the control instruction to rotate the dice tray 1, thereby performing the card exchange.

[0030] like Figure 4 As shown, the numerical control rotating device 19 is electrically connected to the control circuit 20, and the control circuit 20 is electrically connected to the automatic rotating device 21. The numerical control rotating device 19 includes an input module 191 for inputting data and a central control module 192 connected to the control circuit 20. The input module 191 is a rotating button 101, and the rotating button 101 is electrically connected to the central control module 192. After the central control module 192 receives the input instruction of the rotating button 101, it sends the rotation data to the control circuit 20, and the control circuit 20 controls the automatic rotating device 21 to rotate the dice plate 1 to change cards.

[0031] like Figure 1As shown, an automatic rotation device 21 is installed below the dice tray 1. The automatic rotation device 21 includes a main control device 18 containing a control chip. The main control device 18 receives data input by the control circuit 20 to control the automatic rotation function of the dice tray 1; it also includes a numerical control motor 17 and a telescopic rotating rod 12 connected to the numerical control motor 17. The main control device 18 controls the rotation of the numerical control motor 17, and the numerical control motor 17 drives the telescopic rotating rod 12. The automatic rotation device 21 also includes a bearing column 15 arranged in the funnel housing 4, the bearing column 15 passes through the lower half of the funnel housing 4 and is connected to the telescopic rotating rod 12, a telescopic rotating rod protective sleeve 13 is provided on the outside of the telescopic rotating rod 12, the lower part of the telescopic rotating rod 12 passes through the shuffling turntable 16 and is connected to the numerical control motor 17, the telescopic rotating rod protective sleeve 13 on the outside of the telescopic rotating rod 12 is equipped with a power cord protective sleeve 14, and a power cord is installed in the space between the two sleeves. The power cord is connected to the main control device 18, and the power cord protective sleeve 14 and the telescopic rotating rod protective sleeve 12 do not rotate with the bottom of the funnel housing 4.

[0032] An upper clutch electromagnet 5 is also installed below the dice tray 1. The bearing column 15 is fixedly connected to the upper clutch electromagnet 5 and drives the upper clutch electromagnet 5 to drive the dice tray 1 to rotate. A lower clutch electromagnet 7 is provided below the upper clutch electromagnet 5. The lower clutch electromagnet 7 is installed on the bearing column 15 through a bearing 10. It does not rotate with the bearing column 15, but can move up and down along the bearing column 15. Six lower light-controlled power points 8 are provided on the left and right sides of the lower clutch electromagnet 7. The lower clutch electromagnet 7 is connected to 12 power lines, and the power lines of the lower clutch electromagnet 7 are connected to the main control device 18.

[0033] Four upper light-controlled power points 6 are provided on the left and right sides of the upper clutch electromagnet 5 below the dice tray 1. The power lines are connected to the eight upper light-controlled power points 6 of the upper clutch electromagnet 5. The eight power lines are arranged side by side on a power line plug 9. The power line plug 9 makes the circuits of the function buttons such as shuffling and lifting set on the dice tray 1 conductive. The connection between the upper clutch electromagnet 5 and the lower clutch electromagnet 7 realizes the conduction of the overall circuit of the upper and lower parts of the entire device.

[0034] When the rotation and card-changing function of the dice tray 1 needs to be activated, the main control device 18 in the automatic rotation device 21 controls the lower clutch electromagnet 7 to separate from the upper clutch electromagnet 5. At the same time, the CNC motor 17 controls the telescopic rotating rod 12 to rotate. The telescopic rotating rod 12 drives the rotation of the bearing column 15. The bearing column 15 drives the rotation of the upper clutch electromagnet 5, thereby driving the rotation of the dice tray 1.

[0035] When realizing other functions such as shuffling or dice plate 1 that do not require rotation, the upper clutch electromagnet 5 and the lower clutch electromagnet 7 are restarted and connected, and the lower light-controlled power point 8 on the lower clutch electromagnet 7 contacts the upper light-controlled power point 6 of the upper clutch electromagnet 5 to realize the conduction of the circuit.

[0036] To prevent the tiles to be exchanged from falling off the dice tray 1 during rotation, the dice tray 1 is provided with retaining structures at four locations for retaining the tiles. These retaining structures can be recessed grooves adapted to the shape of the tiles. In this embodiment, the retaining structures are electromagnets 22 located below the portion of the dice tray 1 where the tiles are placed. Electromagnets 22 are electrically connected to a numerically controlled rotating device 19, and the NC rotating device 19 controls the power supply to the electromagnets 22. When the dice tray 1 starts rotating, the NC rotating device 19 inputs a control command, which energizes the electromagnets 22. The electromagnets 22 exert a magnetic force to attract the tiles placed above the dice tray 1. The electromagnetic force dissipates when the rotation and card exchange are complete.

[0037] like Figure 3 As shown, when the game players need to change three mahjong tiles, the four players place their three mahjong tiles on the dice plate 1. One of the players presses the rotation button 101 of the numerical control rotation device 19, and then the numerical control rotation device 19 sends the rotation data to the control circuit 20. The control circuit 20 controls the automatic rotation device 21, and the automatic rotation device 21 controls the start of the entire device, causing the dice plate 1 to rotate. The electromagnet 22 attracts the three mahjong tiles placed above it. By controlling the rotation angle, the three tiles of each player will be exchanged for the positions of the other three game players and will not return to their own positions.

[0038] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art based on the present invention shall fall within the protection scope of the present invention.

Claims

1. An automatic card changing device for a mahjong table, comprising: A dice tray (1) and a dice tray housing (2) installed along the edge of the dice tray (1), characterized in that the dice tiles (1) are of a rotating structure, an automatic rotating device (21) and a control circuit (20) are arranged below the dice tray housing (2), a numerical control rotating device (19) is arranged at four positions on the dice tray housing (2), the numerical control rotating device (19) is electrically connected to the control circuit (20), the control circuit (20) controls the automatic rotating device (21), and the automatic rotating device (21) controls the rotation of the dice tray (1) to a specified position; and the dice tray (1) is provided with limiting structures for placing mahjong tiles at four positions.

2. The automatic card changing device for a mahjong table according to claim 1, characterized in that: The limiting structure is a groove adapted to the shape of the mahjong tiles, or the limiting structure is an electromagnet (22) provided below the portion where the mahjong tiles are placed, the numerical control rotating device (19) is electrically connected to the electromagnet (22) to control the on and off of the electromagnet (22), and when the dice plate (1) starts to rotate, the electromagnet (22) is energized, and the mahjong tiles placed on the dice plate (1) are attracted by magnetic force and rotated along with the dice plate (1), and the magnetic force disappears after the rotation and card replacement are completed.

3. The automatic card changing device for a mahjong table according to claim 1, characterized in that: The automatic rotation device (21) includes a main control device (18) provided with a control chip, and also includes a numerical control motor (17), a telescopic rotating rod (12) connected to the numerical control motor (17), and a bearing column (15) connected to the telescopic rotating rod (12). After receiving a control instruction, the main control device (18) controls the rotation of the numerical control motor (17), the numerical control motor (17) drives the telescopic rotating rod (12), and the telescopic rotating rod (12) drives the bearing column (15) to rotate or extend, thereby driving the dice plate (1) to rotate or lift.

4. The automatic card changing device for a mahjong table according to claim 1, characterized in that: The numerical control rotating device (19) comprises an input module (191) for inputting data and a central control module (192) for sending the data input by the input module (191) to the control circuit (20), wherein the central control module (192) is connected to the input module (191) and the control circuit (20).

5. The automatic card changing device for a mahjong table according to claim 3, characterized in that: The telescopic rotating rod (12) is fitted with a telescopic rotating rod protective cover (13) on the outside, and a power cord protective cover (14) is provided on the outside of the telescopic rotating rod protective cover (13). A power cord is installed between the telescopic rotating rod protective cover (13) and the power cord protective cover (14), and the power cord is connected to the main control device (18).

6. The automatic card changing device for a mahjong table according to claim 1, characterized in that: A funnel shell (4) is installed below the dice tray shell (2), and an upper clutch electromagnet (5) is installed in the funnel shell (4). The upper clutch electromagnet (5) is connected to the dice tray (1) and fixedly connected to the bearing column (15), and is driven by the bearing column (15). A lower clutch electromagnet (7) is correspondingly installed below the upper clutch electromagnet (5). The lower clutch electromagnet (7) is installed on the bearing column (15) through a bearing (10) and can move up and down along the bearing column (15). When the mahjong table card changing function is started, the upper clutch electromagnet (5) is separated from the lower clutch electromagnet (7). When other functions of the mahjong table are started, the upper clutch electromagnet (5) and the lower clutch electromagnet (7) are attracted to make other function circuits conductive.

7. The automatic card changing device for a mahjong table according to claim 3, characterized in that: The input module (191) is a rotation button (101).

8. The automatic card changing device for a mahjong table according to claim 1, characterized in that: When the card changing function is activated, the automatic rotation device (21) controls the dice tray (1) to rotate inside the dice card housing (2) to change the cards.

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