Mahjong notch determining table

By using fixed-suit dice and magnetic components combined with a pivot support structure on the mahjong fixed-suit table, the problem of relying on memory in the mahjong fixed-suit gameplay is solved, and the fixed suit is displayed intuitively, ensuring the fairness of the game and the smoothness of the display.

CN224236047UActive Publication Date: 2026-05-15SICHUAN KOVY IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN KOVY IND
Filing Date
2025-04-11
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The existing Mahjong suit-fixing system relies on players' memory and cannot visually display the suits fixed by each player, which may lead to unfair situations.

Method used

A mahjong set with a fixed suit design was designed, which uses a structure combining a fixed suit die, a magnetic component, and a pivot pin support. The fixed suit die displays the player's chosen suit, and the magnetic positioning and pivot pin support ensure that the pattern is always facing upwards, avoiding frictional resistance and achieving a clear display.

Benefits of technology

It provides an intuitive display of the suits each player chooses, eliminating the need for memorization and avoiding unfair situations caused by insufficient memory. It is suitable for various mahjong tables and offers a clear and smooth display.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224236047U_ABST
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Abstract

The utility model discloses a mahjong vacancy determining table, and relates to the field of chess and card intelligence development auxiliary devices, the mahjong vacancy determining table comprises a body serving as a structural support, vacancy determining dices used for displaying mahjong vacancy determining patterns are rotatably installed on the periphery of the body, and any vacancy determining dice comprises at least three surfaces with different mahjong vacancy determining patterns. The mode of combining shaft pin supporting and magnetic positioning is adopted, the stability that the fixed-gap pattern of the fixed-gap dice is always upward can be achieved, and the rotating smoothness of the fixed-gap dice can also be considered.
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Description

Technical Field

[0001] This utility model relates to the field of entertainment device technology, and in particular to a card game auxiliary device, specifically a mahjong setter. Background Technology

[0002] Among card and board games, Mahjong is a popular pastime, especially in southwestern my country, particularly in the Yunnan, Guizhou, and Sichuan regions. Sichuan Mahjong is one of the most representative variations. In the Sichuan and Chongqing regions, it's called "fixed suit," meaning players must hold one suit in their hand and cannot keep all suits. However, existing fixed suit rules often rely on verbal agreements between players, with players memorizing the fixed suits to check for rule violations or changes during gameplay. If other players fail to remember or detect these changes, unfair situations arise due to individual players breaking the fixed suit rules. To address the problem of insufficient memorization for accurately displaying other players' fixed suits, a device that visually displays the fixed suits of each player is urgently needed. Therefore, this utility model has been developed. Utility Model Content

[0003] To address the problem that existing mahjong suit selection relies solely on player memory and lacks a visual display device, this application provides a mahjong suit selection platform that intuitively displays the mahjong suits selected by each player. This achieves the technical effect of displaying the suits selected by each participant in real time, eliminating the need for memorization, and providing intuitive observation.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] A mahjong setter includes a main body that serves as a structural support. Dice for displaying mahjong set patterns are rotatably mounted around the main body. Each set die includes at least three different mahjong set patterns on its surface.

[0006] Preferably, the cross-section of the die is an equilateral triangle, with either a flat chamfer or a rounded chamfer between adjacent sides. The flat or rounded chamfer reduces the overall radius of rotation of the die, saving installation space, and also facilitates the installation of magnetic attachments.

[0007] To better position the die relative to the main body and its rotation angle, and to prevent rotation after the die's position is determined, preferably, a second magnetic attractor is provided between adjacent sides of the die, and a first magnetic attractor is fixedly installed on the main body to attract the second magnetic attractor. It is worth noting that any combination of materials is permissible as long as the first and second magnetic attractors can attract each other to fix the die, and should be included within this solution. For example, the first magnetic attractor can be iron or a material containing iron but not itself magnetic, and the second magnetic attractor can be a magnetic material, such as a magnet or lodestone; alternatively, the first magnetic attractor can be a magnetic material, such as a magnet or lodestone, and the second magnetic attractor can be iron or a material containing iron but not itself magnetic; alternatively, both the first and second magnetic attractors can be made of materials that are themselves magnetic, but when the first and second magnetic attractors are close together, their adjacent ends have opposite polarities, generating an attractive force.

[0008] To facilitate the free movement of the die, preferably, the die is provided with a pivot pin to support its rotation. The two ends of the pivot pin are fixed or rotatably embedded in the main body. The pivot pin can be integrally inserted through the die, allowing it to rotate around the pivot pin under external force. Since the die is rotatably mounted on the main body via the pivot pin, this rotational arrangement can be achieved using any of the following combinations: the pivot pin is rotatably connected to both the main body and the die; or the pivot pin is rotatably connected to either the main body or the die.

[0009] For easier installation, the pin can be installed on the die using an integral or separate fixed or telescopic shaft. An integral pin extends through the entire die, with both ends installed within the body. A separate pin is located at each end of the die and installed within the body for rotation. Both integral and separate structures can use telescopic shafts. During installation, the telescopic shaft is simply compressed, then aligned with the second mounting hole on the body to accommodate the pin ends. The shaft extends under its own spring and enters the second mounting hole, engaging the pin ends. This method requires only the second mounting hole to be pre-drilled on the body, making both the machining of the body structure and the installation of the pin more convenient.

[0010] To make the present invention more integrated, preferably, the main body is provided with cavities around its perimeter for accommodating the fixed die, and the main body is a detachable and combinable structure or an integral fixed structure.

[0011] Furthermore, in order to make it easier to display the fixed pattern and to ensure that the pattern is always positioned at the top, preferably, the main body is provided with cavities around it to accommodate the fixed die, and the bottom surface of the cavity is embedded with the first magnetic suction member.

[0012] Furthermore, to facilitate the installation of this utility model, the bottom of the main body is provided with a connecting mechanism for fixing the main body to the mahjong table.

[0013] The connecting mechanism is one or a combination of adhesive, Velcro, or magnetic components.

[0014] For ease of manipulation, preferably, the gap between the second magnetic attractor and the first magnetic attractor is 0mm-2mm. The purpose of this gap setting is to reduce the frictional resistance of the die during manipulation, so that the entire die is in a magnetically levitated state, with only the frictional resistance generated by the pivot pin. This avoids contact between the second and first magnetic attractors, preventing friction or obstruction and making the rotation smoother. At the same time, under the mutual magnetic force between the second and first magnetic attractors, the die can achieve natural positioning, always keeping the pattern to be determined facing upwards.

[0015] Beneficial effects:

[0016] 1. This utility model adopts a method of using axle pin support combined with magnetic positioning, which can solve the stability of the fixed pattern of the die always facing upwards, and also take into account the smoothness of the fixed pattern of the die rotation.

[0017] 2. This utility model provides a variety of ways to connect with existing mahjong tables, and can be adapted to any existing machine mahjong table, with a wide range of applications.

[0018] 3. This utility model adopts a magnetic levitation fixed-slot pattern display design. Under the action of magnetic force, it will not change even if the user moves it. It will always display the fixed-slot pattern selected by all parties at the top, which is clear and intuitive and does not rely on human memory. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the isometric view of the structure of this utility model.

[0021] Figure 2 This is an isometric drawing of a fixed-size die structure.

[0022] Figure 3 yes Figure 2 Top view.

[0023] Figure 4 yes Figure 3 A sectional view with the section symbol AA along the center line.

[0024] Figure 5 yes Figure 1 Top view.

[0025] Figure 6 yes Figure 5 A sectional view of the section symbol BB.

[0026] Figure 7 yes Figure 5 A sectional view with the section symbol CC.

[0027] In the figure: 1-body; 2-cavity; 3-first magnetic chuck; 4-fixed die; 5-first mounting hole; 6-shaft pin; 7-second magnetic chuck; 8-second mounting hole; 9-connecting mechanism. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0033] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] Example 1:

[0035] This embodiment provides a mahjong setter; the structure is described in the attached instruction manual. Figure 1As shown, the system includes a main body 1 serving as structural support. Around the main body 1, dice 4 for displaying the suit of a mahjong tile are rotatably mounted. Each dice 4 includes at least three different mahjong suit patterns on its surface. By placing the mahjong suit-determining platform provided in this embodiment on a table, players can manually move the dice 4 aligned with their chosen suit so that their chosen suit faces upwards. This eliminates the need for players to memorize the suits of the other three players, as the platform always clearly and objectively displays the suits. It avoids the need for manual memorization and the possibility of having no tiles to choose from after a turn, as in existing technologies. Referring to the existing mahjong suit-determining device CN219001945U, which provides a device for fixing mahjong tiles, this device requires selecting actual mahjong tiles for fixing to display the suit. However, at the beginning of a turn, there may be tiles for which no suit has been selected for a suit, which the existing technology cannot solve. The technical solution provided in this embodiment is not limited by this limitation.

[0036] Example 2:

[0037] This embodiment optimizes the structure in several ways based on Embodiment 1. Specifically, the cross-section of the fixed-case die 4 is arranged in an equilateral triangle, with either a flat chamfer or a rounded chamfer between adjacent sides. The flat chamfer or rounded chamfer reduces the rotation radius of the entire fixed-case die 4, saving installation space and facilitating the installation of magnetic components. See the instruction manual for its structure. Figures 2-4 As shown.

[0038] To better position the relative position and rotation angle between the die 4 and the body 1, and to prevent rotation after the position of the die pattern is determined, in this embodiment, a second magnetic attractor 7 is provided between adjacent sides of the die 4, and a first magnetic attractor 3 is fixedly installed on the body 1 to attract the second magnetic attractor 7. It is worth noting that any combination of materials is permissible as long as the first magnetic attractor 3 and the second magnetic attractor 7 can attract each other to fix the die 4, and should be included within this solution. For example, the first magnetic attractor 3 can be iron or a material containing iron but not magnetic, and the second magnetic attractor 7 can be a magnetic material, such as a magnet or lodestone; alternatively, the first magnetic attractor 3 can be a magnetic material, such as a magnet or lodestone, and the second magnetic attractor 7 can be iron or a material containing iron but not magnetic; alternatively, both the first magnetic attractor 3 and the second magnetic attractor 7 can be made of materials that are magnetic, but when they approach each other, the polarities of their adjacent ends are opposite, generating an attractive force. The installation method of the second magnetic attractor 7 can be as follows: Figure 2 The threaded structure shown is detachably and fixedly connected to the fixed die 4. See [link / reference]. Figure 2As shown, a first mounting hole 5 is provided in the middle of the chamfered plane of the die 4 for matching the second magnetic 7. This allows for flexible adjustment of the gap between the second magnetic 7 and the first magnetic 3, thereby determining the magnitude of the magnetic force.

[0039] To facilitate the free movement of the fixed-piece die 4, in this embodiment, the fixed-piece die 4 is provided with a pivot pin 6 to support its rotation. The two ends of the pivot pin 6 are fixedly or rotatably embedded within the body 1. The pivot pin can be integrally inserted through the fixed-piece die 4, allowing the fixed-piece die 4 to rotate around the pivot pin 6 under external force. Since the fixed-piece die 4 is rotatably mounted on the body 1 via the pivot pin 6, this rotational mounting can be achieved using any of the following combinations: the pivot pin 6 is rotatably connected to both the body 1 and the fixed-piece die 4 simultaneously; or the pivot pin 6 is rotatably connected to either the body 1 or the fixed-piece die 4.

[0040] For easier installation, the pin 6 can be installed on the die 4 using either an integral or separate fixed or telescopic shaft. The integral pin 6 runs through the entire die 4, with both ends installed in the body 1. The separate pin 6 is located at both ends of the die 4 and installed in the body 1 for the die to rotate. Both integral and separate structures can use telescopic shafts. During installation, the telescopic shaft is simply compressed, then aligned with the second mounting hole 8 on the body 1 to accommodate the ends of the pin 6, and released. This allows the telescopic shaft to extend under its own spring and enter the second mounting hole 8, thus engaging the ends of the pin 6. This method only requires pre-drilling the second mounting hole 8 on the body 1, making both the machining of the body 1 and the installation of the pin 6 more convenient.

[0041] To make this utility model more integrated, in this embodiment, the main body 1 is provided with cavities 2 around it for accommodating the fixed die 4, and the main body 1 is a detachable and combinable structure or an integral fixed structure.

[0042] Furthermore, in order to make it easier to display the fixed pattern and to ensure that the pattern is always at the top, preferably, the main body 1 is provided with cavities 2 around its perimeter to accommodate the fixed die 4, and the bottom surface of the cavity 2 is embedded with the first magnetic suction member 3.

[0043] Furthermore, to facilitate the installation of this utility model, the bottom of the main body 1 is provided with a connecting mechanism 9 for fixing the main body 1 to the mahjong table.

[0044] The connecting mechanism 9 is one or a combination of adhesive, Velcro, or magnetic components.

[0045] For ease of manipulation, preferably, the gap between the second magnetic 7 and the first magnetic 3 is 0mm-2mm. The purpose of this gap setting is to reduce the frictional resistance of the die 4 during manipulation, so that the entire die 4 is in a magnetically levitated state, with only the frictional resistance generated by the pivot pin 6. This avoids contact between the second magnetic 7 and the first magnetic 3, preventing friction or obstruction and making the rotation smoother. At the same time, under the mutual magnetic force between the second magnetic 7 and the first magnetic 3, the die 4 can achieve natural positioning, always keeping the pattern to be fixed facing upwards.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A mahjong set with a fixed suit, characterized in that: Includes a body (1) as a structural support, and around the body (1) are fixed dice (4) for displaying mahjong fixed pattern. Each fixed dice (4) includes at least three different mahjong fixed patterns on its surface.

2. The mahjong set according to claim 1, characterized in that: The fixed die (4) has an equilateral triangle cross section, and the adjacent two sides are chamfered with a flat or rounded chamfer.

3. A mahjong set with a fixed suit according to claim 2, characterized in that: The fixed die (4) has a second magnetic attractor (7) between its two adjacent sides, and the main body (1) has a first magnetic attractor (3) fixedly installed on it for attracting the second magnetic attractor (7).

4. A mahjong set with a fixed suit according to claim 1, characterized in that: The fixed die (4) is provided with a pivot pin (6) to support the rotation of the fixed die (4), and the two ends of the pivot pin (6) are fixed or rotatably embedded in the body (1).

5. A mahjong set with a fixed suit according to claim 4, characterized in that: The pin (6) is installed on the die (4) in an integral or separate fixed or telescopic manner.

6. A mahjong set with a fixed suit according to any one of claims 1-5, characterized in that: The main body (1) has cavities (2) around it for accommodating the fixed die (4). The main body (1) is a detachable and combinable structure or an integral fixed structure.

7. A mahjong set with a fixed suit according to claim 3, characterized in that: The main body (1) has a cavity (2) around it for accommodating the fixed die (4), and the bottom surface of the cavity (2) is embedded with the first magnetic suction member (3).

8. A mahjong set with a fixed suit according to any one of claims 1-5 and 7, characterized in that: The bottom of the main body (1) is provided with a connecting mechanism (9) for fixing the main body (1) to the mahjong table.

9. A mahjong set with a fixed suit according to claim 8, characterized in that: The connecting mechanism (9) is one or a combination of adhesive, Velcro or magnetic components.

10. A mahjong set with a fixed suit according to claim 3, characterized in that: The gap between the second magnetic attractor (7) and the first magnetic attractor (3) is 0mm-2mm.