Mahjong machine and mahjong tile pushing and lifting device thereof

Abstract

The utility model discloses a mahjong machine's push card and lift card device and mahjong machine. A mahjong machine's push card and lift card device, including frame, annular storage card groove, push card rod and lift card board, the direction of going into card mouth on storage card groove and the direction of going out of card mouth are 45 to 90 degrees angle of angle, push card and lift card device still include first cam assembly, second cam assembly and set up on frame's rotary drive part, and rotary drive part drives first cam assembly and second cam assembly operation simultaneously, first cam assembly drives push card rod movement, and push card rod promotes the mahjong card in storage card groove and does push card movement, and second cam assembly drives lift card board and does lift movement, and push card movement and lift movement periodically alternate. Still disclose a kind of mahjong machine, including card feeder, and each group card feeder corresponds a group push card and lift card device. Advantage is: the cam transmission structure of this scheme is more stable, and controllability is stronger in trajectory, and significantly reduce the friction and collision risk between mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of mahjong machines, and in particular to a tile-pushing and tile-raising device for a mahjong machine and a mahjong machine. Background Technology

[0002] The process of a rotating tile-lifting mahjong machine raising the mahjong tiles to the table involves first stacking the tiles vertically in pairs within the tile slots, then pushing them onto the table via a pusher rod. While the pusher rod is pushing the tiles, the lifting plate is tilted to facilitate the tiles' entry onto the table. After the tiles reach the table, the lifting plate rotates to maintain alignment with the table surface. However, currently, the lifting plate and the pusher rod are controlled by separate motors, and having too many motors increases the complexity of control. Chinese utility model patent CN111450519A, published on April 28, 2020, discloses an integrated linkage tile-lifting mechanism for a mahjong machine. The mechanism includes a tile-pushing component, a tile-lifting component, and a driving component. The tile-pushing component includes a tile-pushing groove and a tile-pushing assembly. The tile-lifting component includes a tile-lifting plate and a tile-lifting assembly. The annular tile-pushing groove includes a tile inlet and a tile outlet. The tile-lifting plate, with one end connected to the tile outlet, extends to the tabletop. The driving component includes a gear system and a driving element. The gear system includes a driving gear, a driven gear system, and an incomplete gear with a notch. Both the driven gear system and the incomplete gear mesh with the driving gear. When the notch of the incomplete gear, which drives the tile-pushing assembly, meshes with the driving gear, the tile-lifting assembly, driven by the driven gear system, pushes the tile-lifting plate to move until it is flush with the tabletop. This patent achieves the switching between different states of the tile-pushing and tile-lifting rods through the incomplete gear. However, over time, the gears may not mesh properly, leading to interference, abnormal noise, or even jamming. Therefore, it is necessary to propose a method that does not use incomplete gears to switch between the different states of the push lever and the lift lever. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a tile pushing and lifting device for a mahjong machine and a mahjong machine. It aims to solve the technical problem that the prior art uses an incomplete gear method to switch between the different states of the tile pushing rod and the tile lifting rod, which is prone to poor meshing over time, resulting in interference, abnormal noise, or even jamming.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: A mahjong machine pusher and lifter device includes a base, an annular storage slot on the base for holding mahjong tiles, a pusher for pushing the mahjong tiles in the storage slot, and a lifter for lifting the mahjong tiles in the storage slot onto the table. The direction of the tile inlet on the storage slot is at an angle of 45° to 90° to the direction of the tile outlet. The card pushing and lifting device also includes a first cam assembly, a second cam assembly, and a rotary drive unit mounted on the base. The rotary drive unit simultaneously drives the first cam assembly and the second cam assembly. The first cam assembly drives the pusher lever to move, and the pusher lever pushes the mahjong tiles in the storage slot to move; the second cam assembly drives the lifting plate to move up and down, and the pushing and lifting movements are periodically alternated.

[0005] In the aforementioned tile-pushing and lifting device for a mahjong machine, the first cam assembly includes a first annular groove and a first driven member running along the first annular groove. The first annular groove is mounted on the machine base. The rotary drive member drives the first driven member to move. The tile-pushing rod has a drive groove that cooperates with the first driven member. The trajectory design of the first annular groove directly constrains the movement path of the first driven member, thereby driving the tile-pushing rod to move. The cam drive has higher trajectory accuracy. By optimizing the annular groove curve (such as a combination of arc and straight line segments), the tile-pushing rod can achieve uniform, variable, or intermittent movement, reducing motion jamming or impact, lowering the risk of tile scattering and jamming during the mahjong tile pushing process, and improving overall operational stability. The first driven member directly cooperates with the drive groove of the tile-pushing rod, eliminating the need for additional gear meshing or complex linkage mechanisms, reducing the number of parts and assembly accuracy requirements. Simultaneously, the first annular groove can be integrated into the machine base, the first driven member has a simple structure, facilitates mass production, and wear parts are easy to replace, reducing the manufacturing and subsequent maintenance costs of the equipment.

[0006] In the aforementioned tile-pushing and lifting device for a mahjong machine, the first driven member includes a first swing arm, a first rotating shaft moving along a first annular groove, and a second rotating shaft moving along a drive groove. Both the first and second rotating shafts are mounted on the first swing arm and are offset from the swing axis of the first swing arm. The first swing arm is oscillating on a rotary drive member, and the swing axis of the first swing arm is offset from the rotation axis of the rotary drive member. The distances of the first and second rotating shafts from the swing axis of the first swing arm can be freely adjusted. By adjusting the ratio of the distances between the two rotating shafts and the swing axis, the output force of the rotary drive member can be amplified, reducing the load on the drive motor. Furthermore, the above-mentioned structural design of the first driven member allows for more flexible adjustment of the shapes of the drive groove and the first annular groove to adapt to the 45° to 90° angle layout of the tile storage slot.

[0007] In the aforementioned tile-pushing and tile-lifting device for a mahjong machine, the drive groove includes a first stationary section. When the first driven member moves along the first stationary section of the drive groove, no force is generated between the first driven member and the drive groove to push the tile-pushing rod, and the tile-pushing rod remains stationary. Meanwhile, the second cam assembly drives the tile-lifting plate upwards. The design of the first stationary section keeps the tile-pushing rod stationary during the upward movement of the tile-lifting plate. By adapting the shape of the drive groove wall to the movement trajectory of the second rotating shaft, the overlapping areas of the tile-pushing and tile-lifting actions are physically separated mechanically.

[0008] In the aforementioned tile-pushing and lifting device for a mahjong machine, the first annular groove includes a second stationary section. When the first rotating shaft runs along the second stationary section, the shape of the drive groove wall of the first stationary section matches the movement trajectory of the second rotating shaft, ensuring that no force is generated between the second rotating shaft and the drive groove wall to push the tile-pushing rod, thus keeping the tile-pushing rod stationary. This design ensures that the first driven component does not drive the tile-pushing rod without stopping the rotating drive component, pausing the tile-pushing rod movement and providing time for the lifting and lowering motion. This avoids interference between the tile-removing and lifting motions, achieving the alternation of tile-pushing and lifting motions using a purely mechanical structure, reducing the requirements for electrical control equipment.

[0009] In the aforementioned tile-pushing and tile-lifting device for a mahjong machine, the drive groove includes a proximal end near the rotation center of the tile-pushing rod and a distal end far from the rotation center of the tile-pushing rod. Along the rotation direction of the tile-pushing rod, the proximal end is located upstream of the distal end. When the tile-pushing motion stops, the first driven member moves from the distal end to the proximal end. The mechanical mechanism formed by the positional difference between the proximal and distal ends relative to the rotation center of the tile-pushing rod enables action switching without the need for electronic sensors or complex control programs. This avoids action misalignment caused by signal delays or mechanical backlashes, ensuring that the tile-lifting action starts immediately after the tile-pushing is completed.

[0010] In the aforementioned tile-pushing and lifting device for a mahjong machine, the first annular groove further includes a driving section. When the first driven member moves along the driving section, it is located at the distal end and abuts against the groove wall of the driving groove, thereby pushing the tile-pushing rod to perform a tile-pushing motion. During the tile-pushing motion, the first driven member, located at the distal end, pushes the tile-pushing rod. This scheme, through the active force formed by the trajectory difference, is more stable, ensuring that the mahjong tiles are smoothly pushed to the lifting plate, avoiding problems such as tile jamming or incomplete pushing due to insufficient pushing force. Furthermore, since the first driven member remains at the distal end throughout the tile-pushing motion, the design difficulty of the driving groove shape can also be reduced.

[0011] In the aforementioned tile-pushing and lifting device of a mahjong machine, the drive section is arc-shaped, with its center located on the rotation axis of the tile-pushing rod. The coincidence of the arc's center with the rotation axis of the tile-pushing rod means that when the first driven member moves along the drive section, the force exerted on the tile-pushing rod is always along the tangent direction of the tile-pushing rod (i.e., the rotation direction of the tile-pushing rod). This design ensures that the pushing force is fully utilized to drive the rotation of the tile-pushing rod, avoiding energy loss due to radial force or increased friction between the mahjong tiles and the storage slot wall. Furthermore, the concentric arc-shaped drive section design makes the trajectory of the first driven member more regular as it moves along the drive section, facilitating the design of the drive slot's shape.

[0012] In the aforementioned tile-pushing and lifting device for a mahjong machine, the second cam assembly includes a second annular groove and a second driven member running along the second annular groove. The second annular groove is disposed on a rotary drive member, and the second driven member drives a rocker arm mechanism to move, thereby raising and lowering the tile-lifting plate. The second annular groove is directly disposed on the rotary drive member, sharing the same rotary drive source with the first cam assembly, eliminating the need for an additional motor to drive the tile-lifting action. The arcuate trajectory of the second annular groove can be precisely designed according to the lifting and lowering requirements of the tile-lifting plate. When the second driven member moves along the annular groove, the rocker arm mechanism converts the annular groove trajectory into a stable lifting and lowering action of the tile-lifting plate.

[0013] In the aforementioned tile-pushing and lifting device for a mahjong machine, the second driven component includes a second swing arm mounted on the base and a third rotating shaft mounted on the second swing arm. The second swing arm is linked to a rocker arm mechanism, and the third rotating shaft moves along a second annular groove to drive the second swing arm to move the rocker arm mechanism. The second swing arm rotates around the base as a fulcrum. When the third rotating shaft moves along the second annular groove, the lever effect of the swing arm converts small changes in the annular groove's trajectory into larger movements of the rocker arm mechanism, thereby driving the tile-lifting plate to complete its lifting stroke from a low position to the tabletop. The third rotating shaft moves along the trajectory of the second annular groove, and its path can be precisely designed through the annular groove curve. Furthermore, the linkage with the second swing arm makes the movement trajectory of the rocker arm mechanism driving the tile-lifting plate controllable.

[0014] In the aforementioned tile-pushing and lifting device for a mahjong machine, the second annular groove includes an ascending arc, a descending arc, and a first delay arc. The two ends of the first delay arc are connected to the ascending arc and the descending arc, respectively. The ascending arc corresponds to the process of the tile-lifting plate rising from a low position to the tabletop, and the descending arc corresponds to the process of the tile-lifting plate returning to its low position from the tabletop. The first delay arc enables the tile-lifting plate to remain stationary during the tile-pushing phase, allowing for precise control of the tile-lifting plate's movement to achieve periodic alternation with the tile-pushing movement.

[0015] In the aforementioned tile-pushing and tile-lifting device of a mahjong machine, when the second driven member moves along the first delayed arc, the tile-lifting plate remains stationary, and the first cam assembly drives the tile-pushing rod to perform a tile-pushing motion. The first delayed arc, through trajectory design, ensures that the tile-lifting plate remains stationary when the second driven member moves, while the first cam assembly synchronously drives the tile-pushing rod to push the tiles, forming a strict staggered mechanism where "the tile-lifting plate remains stationary when pushing tiles, and the tile-pushing rod remains stationary when lifting tiles."

[0016] In the aforementioned tile-pushing and tile-lifting device of a mahjong machine, when the second driven member moves to the intersection of the first delay arc and the rising arc, the first cam assembly stops driving the tile-pushing rod to push the tiles, and the tile-lifting plate prepares to begin its upward movement. The switching design at the intersection ensures that the tile-pushing rod is fully reset or stationary before the tile-lifting plate begins to rise, completely eliminating the risk of collision caused by the intersection of their movement trajectories.

[0017] In the aforementioned tile-pushing and lifting device of a mahjong machine, the rotary drive component is a geared disc, and a motor-driven drive gear is mounted on the base. The drive gear meshes with the geared disc to drive its rotation. The meshing transmission between the drive gear and the geared disc features high rigidity and a fixed transmission ratio, enabling precise transmission of the motor's power to the geared disc, ensuring that the geared disc's rotational speed and angle are strictly synchronized with the motor's output. Through the precise transmission of the gear meshing, the trajectory movements of the first cam assembly and the second cam assembly can be perfectly matched with the preset timing sequence, avoiding misalignment caused by transmission backlash.

[0018] In the aforementioned tile-pushing and lifting device of a mahjong machine, the tile-dispensing direction of the storage slot forms an angle of 0° to 5° with the tile-feeding direction of the lifting plate. This 0° to 5° angle ensures that the tangent of the tile-feeding direction of the lifting plate aligns with the tile-dispensing direction of the storage slot, resulting in even force distribution on the mahjong tiles as they enter the lifting plate, preventing them from tipping over or becoming misaligned. Compared to the scattered tile pile caused by large-angle deviations, this design ensures the neatness of the mahjong tile pile before the lifting plate rises, laying a stable foundation for the subsequent tile-lifting action.

[0019] A mahjong machine was also disclosed, including a shuffling plate and four sets of card-feeding devices arranged around the outer periphery of the shuffling plate. Each set of card-feeding devices corresponds to a set of card-pushing and card-raising devices described in any of the above-mentioned schemes. After the mahjong tiles are fed out from the shuffling plate by the card-feeding devices, they can be quickly and accurately pushed onto the table by the card-pushing and card-raising devices, avoiding jamming and misalignment of the mahjong tiles during transmission, greatly shortening the time for playing tiles, improving the player's gaming experience, and ensuring the continuity of the game.

[0020] In the aforementioned mahjong machine, the card-dispensing direction of the card-feeding device forms an angle of 135° to 180° with the card-infeeding direction of the corresponding card-pushing and card-raising device. If the angle is less than 135°, the angle between the card-dispensing direction of the card-feeding device and the card-infeeding direction of the card-raising plate is too small, which will cause the card-feeding device to be too close to or even overlap with components such as the card-raising plate and the card storage slot in space. If the angle is greater than 180°, it means that the card-dispensing direction of the card-feeding device and the card-infeeding direction of the card-raising plate form a "reverse" layout, which will result in an excessively long card-feeding path or excessive detour. An angle of 135° to 180° allows the card-dispensing direction of the card-feeding device to be reasonably connected with the card-infeeding direction of the card storage slot. The card-feeding device is set around the outer periphery of the shuffling tray, and the card-raising plate is located on the inner side. The two are staggered by a large angle, avoiding interference between components in adjacent groups.

[0021] In the aforementioned mahjong machine, the card-dispensing port of the card-feeding device is equipped with a card-pushing rod, the pushing direction of the pushing rod forming an angle of 80° to 100° with the card-dispensing direction of the card-feeding device. If the angle is less than 80°, the turning angle of the pushing rod is insufficient, which will cause the pushing direction of the mahjong tiles to deviate too much from the card-entry direction of the storage slot. The mahjong tiles are prone to colliding with the side wall of the storage slot, causing problems such as card jamming and scattered tile piles. If the angle is greater than 100°, the pushing rod needs to overcome greater lateral resistance to change the movement trajectory of the mahjong tiles, which will not only increase the load on the drive motor, but may also cause the mahjong tiles to tilt or become misaligned due to uneven force, preventing them from neatly entering the storage slot. With an angle design of 80° to 100°, the card feeding device feeds the cards along a straight line or a small-angle arc. The pusher rod rotates and pushes the mahjong cards into the storage slot at a near right angle. This avoids direct conflict between the card feeding direction and the card entering direction of the storage slot, and ensures that the mahjong cards can smoothly enter along the tangent direction of the storage slot, reducing the scattering of cards or card piles caused by excessive rotation.

[0022] Compared with the prior art, the advantages of this utility model are: The card-pushing and lifting movements are periodically alternated via a cam assembly, ensuring that the lifting plate is at the appropriate angle when the card pusher pushes the card, and that there is no interference between the lifting plate and the card pusher during lifting and lowering, with no overlap or conflict between the two movements. Compared to existing technologies that use incomplete gear switching, which can easily lead to interference and abnormal noise, this solution's cam transmission structure is more stable, has stronger controllability of the motion trajectory, and significantly reduces the risk of friction and collision between mechanisms.

[0023] By simultaneously driving the first and second cam assemblies with a rotary drive, the periodic alternation of the card-pushing motion of the pusher and the lifting motion of the card-raising plate is achieved. Compared to existing technologies where the card-pushing and lifting mechanisms require independent motor drives, this solution only requires a single rotary drive to complete the linkage of the two sets of actions, reducing the number of motors, simplifying the overall structure, and lowering the complexity of circuit control and equipment failure rate.

[0024] Because the card storage slot is ring-shaped, the card-in direction of the card-in port and the card-out direction of the card-out port form an angle of 45° to 90°. This increases the effective storage length of the card storage slot, allowing it to hold more mahjong tiles, improving the efficiency of card loading per transaction, and reducing the frictional resistance of the mahjong tiles in the storage slot. This avoids card jamming and card scrambling, making the card-pushing process smoother. It also adapts to the internal space layout of the mahjong machine, avoids interference between adjacent mechanisms, reduces the overall height of the machine, and improves the compactness of the equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a mahjong machine according to the present invention; Figure 2 This is a perspective view of a tile pushing and lifting device for a mahjong machine according to the present invention; Figure 3 The explosion of a tile-pushing and tile-raising device for a mahjong machine according to this utility model. Figure 1 ; Figure 4 The explosion of a tile-pushing and tile-raising device for a mahjong machine according to this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the connection structure between the tile-lifting plate and the rotary drive component in a tile-pushing and tile-lifting device for a mahjong machine according to this utility model; Figure 6 This is a schematic diagram of the connection structure between the tile-lifting plate and the tile-raising mechanism in a tile-pushing and tile-raising device for a mahjong machine according to this utility model; Figure 7 This is a schematic diagram of the connection structure between the push rod and the rotary drive component in the push and lift device of a mahjong machine according to the present invention. Figure 8 This is a schematic diagram of the structure of the first annular groove in the tile pushing and lifting device of a mahjong machine according to the present invention; Figure 9 This is a bottom view of the rotary drive component in the tile pushing and lifting device of a mahjong machine according to the present invention. Figure 10 This is a top view of a tile-pushing and tile-raising device for a mahjong machine according to this utility model.

[0026] The attached figures are labeled as follows: The components include: base 100, card storage slot 110, drive gear 120, card pusher 200, drive groove 210, first stationary section 211, card lifting plate 300, first cam assembly 400, first annular groove 410, second stationary section 411, drive section 412, first driven component 420, first swing rod 421, first swing shaft 4211, first rotating shaft 422, second rotating shaft 423, second cam assembly 500, second annular groove 510, rising arc 511, falling arc 512, first delay arc 513, second driven component 520, second swing rod 521, third rotating shaft 522, rotary drive component 600, swing hole 610, through groove 620, rocker arm mechanism 700, rack 710, driven gear 720, rocker arm 730, track groove 740, shuffling plate 800, and card feeding device 900. Detailed Implementation

[0027] A mahjong machine pusher and lifter device includes a base 100, an annular storage slot 110 disposed on the base 100 for accommodating mahjong tiles, a pusher 200 for pushing the mahjong tiles in the storage slot 110, and a lifter plate 300 for lifting the mahjong tiles in the storage slot 110 to the tabletop. The direction of the tile inlet on the storage slot 110 is at an angle of 45° to 90° to the direction of the tile outlet. The card pushing and lifting device also includes a first cam assembly 400, a second cam assembly 500, and a rotary drive 600 disposed on the base 100. The rotary drive 600 simultaneously drives the first cam assembly 400 and the second cam assembly 500. The first cam assembly 400 drives the pusher rod 200 to move, and the pusher rod 200 pushes the mahjong tiles in the storage slot 110 to make a pushing motion; the second cam assembly 500 drives the lifting plate 300 to make a lifting motion, and the pushing motion and lifting motion are periodically alternated.

[0028] The card-pushing and lifting movements are periodically alternated through a cam assembly, ensuring that the lifting plate 300 is at the appropriate angle when the card pusher 200 pushes the card, and that the lifting plate 300 does not interfere with the card pusher 200 during lifting and lowering, with no overlap or conflict between the two movements. Compared to the interference and abnormal noise problems that can easily occur when switching states through incomplete gears in existing technologies, the cam transmission structure of this solution is more stable, has stronger controllability of motion trajectory, and significantly reduces the risk of friction and collision between mechanisms.

[0029] By simultaneously driving the first cam assembly 400 and the second cam assembly 500 with the rotary drive component 600, the periodic alternation of the pushing motion of the pusher 200 and the lifting motion of the lifting plate 300 is achieved. Compared with the existing technology where the pushing and lifting mechanisms require independent motor drives, this solution only requires one rotary drive component 600 to complete the linkage of the two sets of actions, reducing the number of motors, simplifying the overall structure, and lowering the complexity of circuit control and equipment failure rate.

[0030] Because the card storage slot 110 is ring-shaped, the card-in direction of the card-in port and the card-out direction of the card-out port of the card storage slot 110 form an angle of 45° to 90°, which can increase the effective storage length of the card storage slot 110, accommodate more mahjong tiles, improve the efficiency of single card loading, and reduce the frictional resistance of mahjong tiles in the card storage slot 110, avoid card jamming and disorder, make the card pushing process smoother, adapt to the internal space layout of the mahjong machine, avoid interference between adjacent mechanisms, reduce the overall height of the machine, and improve the compactness of the equipment.

[0031] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] See Figures 2 to 10 This invention relates to an embodiment of a mahjong machine pusher and lifter device. The mahjong machine pusher and lifter device includes a base 100, a storage channel for holding mahjong tiles disposed on the base 100, a pusher rod 200 for pushing the mahjong tiles in the storage channel, and a lifter plate 300 for lifting the mahjong tiles in the storage channel to the tabletop.

[0033] The main improvement of this invention lies in the driving mechanism for the rotation of the pusher rod 200 and the lifting motion of the lifting plate 300. The pusher and lifting device also includes a first cam assembly 400, a second cam assembly 500, and a rotary drive 600 mounted on a base. The rotary drive 600 simultaneously drives the first cam assembly 400 and the second cam assembly 500. The first cam assembly 400 primarily drives the pusher rod 200, which pushes the mahjong tiles in the storage slot 110. The second cam assembly 500 primarily drives the lifting plate 300 to move up and down. Because the cam assemblies can have intermittent driving characteristics, the pusher and lifting motions can be periodically alternated. Since the rotary drive 600 simultaneously drives both cam assemblies, compared to existing designs where the pusher and lifting mechanisms require independent motors, this solution only requires one rotary drive 600 to complete the linkage of the two actions, reducing the number of motors, simplifying the overall structure, and lowering the complexity of circuit control and equipment failure rate. Furthermore, since this solution does not use power components that drive the pushing and lifting motions with incomplete gears, there is no problem of interference or abnormal noise when switching between incomplete gear states. The cam transmission structure is more stable, the motion trajectory is more controllable, and the risk of friction and collision between mechanisms is significantly reduced.

[0034] In addition, in this utility model, the direction of the card inlet of the card storage slot 110 is at an angle of 45° to 90° with the direction of the card outlet, that is, the card storage slot 110 corresponds to a larger circumferential angle. This can increase the effective storage length of the card storage slot 110, which can hold more mahjong tiles, improve the efficiency of single card feeding, reduce the frictional resistance of mahjong tiles in the card storage slot 110, avoid card jamming and disorder, and make the card feeding process smoother.

[0035] The specific structure and arrangement of the first cam assembly 400 and the second cam assembly 500 will be described below: like Figure 3 , Figure 4 , Figure 7 , Figure 8As shown, the first cam assembly 400 includes a first annular groove 410 and a first follower 420 that runs along the first annular groove 410. The first annular groove 410 is disposed on the base 100. In this embodiment, for ease of manufacturing and replacement of the first annular groove 410 after damage, the first annular groove 410 can be separately machined on a substrate, and then the substrate is fixed on the base 100. The rotary drive 600 drives the first follower 420 to move. The push rod 200 is provided with a drive groove 210 that cooperates with the first follower 420. That is, the rotary drive 600 drives the first follower 420 to move along the first annular groove 410, thereby obtaining the movement trajectory of the first follower 420. At the same time, the first follower 420 also moves within the drive groove 210. By designing whether the movement trajectory of the drive groove 210 and the first follower 420 coincide, the first follower 420 can be controlled. Whether the actuator 420 can push the pusher lever 200 to move depends on whether the movement trajectory of the first follower 420 is different from the groove shape of the drive groove 210. In this case, the first follower 420 interacts with the groove wall of the drive groove 210, pushing the pusher lever 200 to move. If the movement trajectory of the first follower 420 matches the groove shape of the drive groove 210, the first follower 420 will move along the drive groove 210 without exerting a thrust on the drive groove 210, at which point the pusher lever 200 will stop moving. The first cam assembly 400 adopts a structure of "first annular groove 410 + first follower 420". The trajectory design of the first annular groove 410 directly constrains the movement path of the first follower 420, thereby driving the pusher lever 200 to move. Compared to existing linkage technologies, cam transmission offers higher trajectory accuracy. By optimizing the annular groove curve (such as a combination of arc and straight segments), the pusher lever 200 can achieve uniform, variable, or intermittent motion, reducing stuttering or impact, minimizing the risk of tile scattering and jamming during the pushing process, and improving overall operational stability. The first driven component 420 directly engages with the drive groove 210 of the pusher lever 200, eliminating the need for additional gear meshing or complex linkage mechanisms, thus reducing the number of parts and assembly precision requirements.

[0036] Furthermore, the first driven member 420 includes a first rocker arm 421, a first rotating shaft 422 that moves along the first annular groove 410, and a second rotating shaft 423 that moves along the drive groove 210. The first rocker arm 421 is oscillatingly mounted on the rotary drive member 600, and the oscillation axis of the first rocker arm 421 is offset from the rotation axis of the rotary drive member 600. Specifically, a first rocker shaft 4211 is provided at one end of the first rocker arm 421, and a rocker hole 610 adapted to the first rocker shaft 4211 is provided on the rotary drive member 600. The rocker hole 610 is not located at the rotation center of the rotary drive member 600. Furthermore, in this embodiment, the pusher bar 200 is located above the rotary drive member 600, the corresponding first swing arm 421 is disposed between the rotary drive member 600 and the pusher bar 200, and the first annular groove 410 is disposed on the base 100 below the rotary drive member 600. Therefore, the rotary drive member 600 is also provided with a through groove 620 through which the first rotating shaft 422 passes.

[0037] The first rotating shaft 422 and the second rotating shaft 423 are both mounted on the first rocker arm 421 and are offset from the swing axis of the first rocker arm 421. The first rotating shaft 422 and the second rotating shaft 423 can be coaxial or non-coaxial. When non-coaxial, by adjusting the distance ratio between the two rotating shafts and the swing axis, the output force of the rotary drive component 600 can be amplified, and the load on the drive motor can be reduced. Of course, in order to simplify the motion trajectory of the second rotating shaft 423 and design a suitable drive groove 210, in this embodiment, the first rotating shaft 422 and the second rotating shaft 423 are coaxial.

[0038] The first pivot 422 and the second pivot 423 of the first follower 420 are both offset from the swing axis of the first swing rod 421, and the swing axis of the first swing rod 421 is offset from the rotation axis of the rotary drive 600. This double eccentric structure allows the movement trajectory of the pusher rod 200 to be flexibly adjusted through the curve design of the first annular groove 410, conforming to the 45° to 90° angle layout of the storage groove, ensuring that the mahjong tiles are smoothly pushed along the storage groove 110, and reducing the problems of stuck or disordered tiles caused by the deviation of the pusher angle.

[0039] Furthermore, the drive groove 210 includes a first stationary section 211. When the second rotating shaft 423 moves along the first stationary section 211 of the drive groove 210, no force is generated between the second rotating shaft 423 and the groove wall of the drive groove 210 to push the pusher rod 200. The pusher rod 200 remains stationary. At this time, the pusher rod 200 has pushed all the mahjong tiles in the storage slot 110 onto the lifting plate 300. After the pusher rod 200 stops running, the second cam assembly 500 drives the lifting plate 300 to rise. The design of the first stationary section 211 keeps the pusher rod 200 stationary during the rising of the lifting plate 300. By adapting the shape of the groove wall of the drive groove 210 to the movement trajectory of the second rotating shaft 423, the overlapping area of ​​the pushing and lifting actions is physically separated from the mechanical structure. This structure, which is directly constrained by the groove contour, is more stable and can completely avoid the risk of collision or tile jamming between the pusher rod 200 and the lifting plate 300 during the movement.

[0040] like Figure 8 As shown, the first annular groove 410 includes a second stationary section 411. When the first rotating shaft 422 runs along the second stationary section 411, the shape of the drive groove 210 of the first stationary section 411 matches the movement trajectory of the second rotating shaft 423, so that no force is generated between the second rotating shaft 423 and the groove wall of the drive groove 210 to push the pusher rod 200, and the pusher rod 200 remains stationary. The second stationary section 411 of the first annular groove 410 and the first stationary section 211 of the drive groove 210 form a "double stationary section" cooperation mechanism: when the first rotating shaft 422 moves along the second stationary section 411, its trajectory is transmitted through the first swing rod 421, so that the second rotating shaft 423 moves synchronously within the first stationary section 211 of the drive groove 210, and the shape of the groove wall precisely matches the movement trajectory of the second rotating shaft 423, thus providing double mechanical protection for the pusher rod 200 to remain stationary.

[0041] like Figure 7 As shown, the drive groove 210 includes a proximal end D1 near the rotation center of the pusher rod 200 and a distal end D2 away from the rotation center of the pusher rod 200. Along the rotation direction of the pusher rod 200, the proximal end D1 is located upstream of the distal end D2. When the pusher motion stops, the first follower 420 is located at the distal end D2, and the second cam assembly 500 drives the lifting plate 300 to move upwards. The first follower 420 moves from the distal end D2 to the proximal end D1. The first annular groove 410 also includes a drive section 412. When the first follower moves along the drive section 412, the first follower 420 is located at the distal end D2 and abuts against the groove wall of the drive groove 210, thereby pushing the pusher rod 200 to perform a pusher motion. This action switching achieved through a mechanical structure eliminates the need for electronic sensors or complex control programs, avoiding action misalignment caused by signal delay or mechanical backlash, and ensuring that the lifting action starts immediately after the pusher motion is completed.

[0042] Furthermore, the drive section 412 is arc-shaped, and the center of the drive section 412 is located on the rotation axis of the pusher rod 200. When the first follower 420 moves along the drive section 412, the direction of the force exerted on the pusher rod 200 is always along the tangent direction of the pusher rod 200 (i.e. the rotation direction of the pusher rod 200), so that the pusher force is used to drive the pusher rod 200 to rotate, avoiding energy loss caused by radial component force or increased friction between the mahjong tiles and the wall of the storage slot 110.

[0043] like Figures 3 to 5 , Figure 9 As shown, the second cam assembly 500 includes a second annular groove 510 and a second follower 520 running along the second annular groove 510. The second annular groove 510 is disposed on the rotary drive member 600. Since the first follower 420 is located on the top surface of the rotary drive member 600, the second annular groove 510 is disposed on the bottom surface of the rotary drive member 600, thus avoiding conflict during operation. The second follower 520 drives the rocker arm mechanism 700 to move, thereby raising and lowering the card lifting plate 300. The second annular groove 510 is directly disposed on the rotary drive member 600, sharing the same rotary drive source with the first cam assembly 400, eliminating the need for an additional motor to drive the card lifting action. This design reduces the number of power components, lowers the complexity of multi-motor coordinated control, and ensures the timing synchronization of the card pushing and lifting actions through mechanical hard connection, avoiding action conflicts caused by electronic signal delays. The arc-shaped trajectory of the second annular groove 510 can be precisely designed according to the lifting requirements of the lifting plate 300. When the second follower 520 moves along the annular groove, the annular groove trajectory is converted into a stable lifting action of the lifting plate 300 through the rocker arm mechanism 700.

[0044] Furthermore, the second driven member 520 includes a second rocker arm 521 disposed on the base 100 and a third rotating shaft 522 disposed on the second rocker arm 521. The second rocker arm 521 is linked with the rocker arm mechanism 700, and the third rotating shaft 522 moves along the second annular groove 510 to drive the second rocker arm 521 to move the rocker arm mechanism 700. In this embodiment, a second rocker shaft is provided in the middle of the second rocker arm 521, through which the second rocker arm 521 is rotatably connected to the base 100. The third rotating shaft 522 is located at one end of the second rocker arm 521, and the other end of the second rocker arm 521 is linked with the rocker arm mechanism 700. When the second rocker arm 521 rotates with the base 100 as the fulcrum, and the third rotating shaft 522 moves along the second annular groove 510, the lever effect of the rocker arm can convert the small trajectory change of the annular groove into a larger movement amplitude of the rocker arm mechanism 700, thereby driving the lifting plate 300 to complete the lifting stroke from the low position to the tabletop. This design does not require increasing the size of the second ring groove 510 to meet the tile lifting height requirement, making the structure more compact and suitable for the limited space inside the mahjong machine.

[0045] The structure of the second annular groove 510 includes an ascending arc 511, a descending arc 512, and a first delay arc 513. The two ends of the first delay arc 513 are connected to the ascending arc 511 and the descending arc 512, respectively. The ascending arc 511 corresponds to the process of the tile-raising plate 300 rising from a low position to the tabletop, and the descending arc 512 corresponds to the process of the tile-raising plate 300 resetting from the tabletop to a low position. The first delay arc 513 enables the tile-raising plate 300 to remain stationary during the tile-pushing phase. This segmented design ensures that the tile-raising plate 300 remains stationary to receive the mahjong tiles during tile pushing via the first delay arc 513, and smoothly raises the tiles via the ascending arc 511 after tile pushing is completed.

[0046] When the second follower 520 moves along the first delay arc 513, the card lifting plate 300 remains stationary, and the first cam assembly 400 drives the card pusher 200 to perform a card pushing motion. When the second follower 520 moves to the intersection of the first delay arc 513 and the rising arc 511, the first cam assembly 400 stops driving the card pusher to perform a card pushing motion, and the card lifting plate 300 is ready to start its upward movement.

[0047] The ascending arc 511 and descending arc 512 can be directly connected, or a second delay arc can be set. When the third rotating shaft 522 moves to the second delay arc, the card-lifting plate 300 remains in a high position. At this time, the pusher rod 200 has enough time to pass under the card-lifting plate 300, avoiding interference between the pusher rod 200 and the card-lifting plate 300. If the ascending arc 511 and descending arc 512 are directly connected, the pusher rod 200 can be controlled to start moving and passing under the card-lifting plate 300 when the card-lifting plate 300 rises to a sufficient height to allow the pusher rod 200 to pass underneath. As long as the pusher rod 200 completely passes before the height of the descending screen of the card-lifting plate 300 is lower than the height that allows the pusher rod 200 to pass, the pusher rod 200 can pass completely.

[0048] like Figure 6 As shown, the rocker arm mechanism 700 includes a rack 710, a driven gear 720, a rocker arm 730, and a track groove 740. The rack 710 is slidably mounted on the base 100. A second cam mechanism drives the rack 710 to move linearly. The movement of the rack 710 drives the driven gear 720 to rotate, and the rotation of the driven gear 720 drives the rocker arm 730 to swing. The swinging end of the rocker arm 730 engages with the track groove 740, which is fixedly connected to the card-lifting plate 300, thereby controlling the lifting plate 300 to move up and down. Depending on the motion, the lifting plate can move vertically, or one end can be rotatably connected to the base 100 while the other end swings to achieve lifting. In this embodiment, the end of the card-lifting plate 300 away from the outlet of the card storage slot 110 is rotatably connected to the base 100, and the end of the card-lifting plate 300 near the outlet of the card storage slot 110 swings up and down.

[0049] Based on the above embodiments, the rotary drive component 600 is a geared disc, and the base 100 is equipped with a motor-driven drive gear 120. The drive gear 120 meshes with the geared disc to drive its rotation. Of course, the rotary drive component 600 can also be a synchronous pulley. The meshing transmission between the drive gear 120 and the geared disc has the characteristics of high rigidity and fixed transmission ratio, which can accurately transmit the power of the motor to the geared disc, ensuring that the rotational speed and angle of the geared disc are strictly synchronized with the motor output. Through the precise transmission of gear meshing, the trajectory movements of the first cam assembly 400 and the second cam assembly 500 can be perfectly matched with the preset timing sequence, avoiding misalignment of movements caused by transmission backlash.

[0050] Based on the above embodiments, the card-feeding direction of the card storage slot 110 and the card-pushing direction of the card-pushing rod 200 form an angle of 0° to 100°. The angle between the card-pushing direction of the card-pushing rod 200 and the card-feeding direction of the card storage slot 110 can be adjusted according to the card-pushing stroke: when the card storage slot 110 is short, a small angle can ensure that the card-pushing rod 200 completes the pushing within a short stroke; when the card storage slot 110 is long or extends in an arc, a large angle can make the movement trajectory of the card-pushing rod 200 match the curvature path of the card storage slot 110, ensuring that multiple mahjong tiles are continuously and smoothly pushed. When the included angle is close to 0°, the direction of pushing the tiles is basically consistent with the direction of entering the tile storage slot 110, which is suitable for scenarios where the tile entry port of the tile storage slot 110 and the tile pushing position are connected in a straight line. When the included angle increases to 100°, it can match the layout of the tile storage slot 110 with a large angle of curvature, so that the tile pushing rod 200 pushes the mahjong tiles along the tangent direction of the tile storage slot 110, reducing the frictional resistance between the mahjong tiles and the slot wall, and avoiding the tiles from getting stuck or the tile pile being scattered.

[0051] Based on the above embodiment, the card-dispensing direction of the card storage slot 110 and the card-infeeding direction of the card-lifting plate 300 form an angle of 0° to 5°. This 0° to 5° angle ensures that the tangent of the card-infeeding direction of the card-lifting plate 300 and the card-dispensing direction of the card storage slot 110 are aligned, resulting in even force distribution when the mahjong tiles enter the card-lifting plate 300, preventing them from tipping over or becoming misaligned. Compared to the scattered tile pile caused by a large angle deviation, this design ensures the neatness of the mahjong tile pile before the card-lifting plate 300 rises, laying a stable foundation for the subsequent card-lifting action.

[0052] The movement process of the card pushing and raising device is as follows: Initially, the tile-lifting plate 300 is at its highest position, meaning it is initially flush with the tabletop, while the tile-pushing rod 200 is at the outlet of the tile storage slot 110, which is position B. Once a set number of mahjong tiles have accumulated in the tile storage slot 110, the rotary drive 600 begins operation, driving the tile-pushing rod 200 counter-clockwise from position B to position A (position A is the entrance to the tile storage slot 110) via the first cam assembly 400. At this point, the tile-pushing rod 200 is in its idle stroke. Simultaneously, the rotary drive 600 also drives the tile-lifting plate 300 to descend via the second cam assembly 500, aligning it with the outlet of the tile storage slot 110 to receive the mahjong tiles pushed in from the slot. During the above process, it is necessary to ensure that the pusher 200 and the lifting plate 300 do not interfere with each other. For example, by setting the annular groove shape of the first cam assembly 400 and the second cam assembly 500, the pusher 200 and the lifting plate 300 can be started sequentially, that is, the pusher 200 moves through the underside of the lifting plate 300 first, and then the lifting plate 300 descends. Alternatively, the pusher 200 can move faster during its stroke through the underside of the lifting plate 300, and the lifting plate 300 can descend more slowly first, thus achieving a staggered height.

[0053] When the pusher lever 200 moves to the entrance of the storage slot 110 (i.e., position A), the lifting plate simultaneously lowers to align with the outlet of the storage slot 110. As the rotary drive 600 continues to rotate, it drives the pusher lever 200 counterclockwise from position A to position B via the first cam assembly 400, and the pusher lever 200 begins its pusher movement. Simultaneously, the lifting plate 300 remains stationary, awaiting the pusher lever 200 to push the mahjong tiles onto the lifting plate 300. This process is specifically as follows: The first rotating shaft 422 of the first cam assembly 400 moves within the drive section 412 of the first annular groove 410, and the second rotating shaft 423 moves along the drive groove 210. However, the movement path of the second rotating shaft 423 does not include the path from D2 to D3 (D3 is the end point of the first stationary section 211 of the drive groove 210, and the path from D2 to D3 is the first stationary section 211. According to actual design needs, the end point D3 of the first stationary section 211 can be any point between the distal point D2 and the proximal point D1). For example, the endpoint D3 of the first stationary segment 211 may be the midpoint between the distal point D2 and the proximal point D1 (and initially, the endpoint D3 of the first stationary segment 211 coincides with the proximal point D1). Alternatively, the second rotating shaft 423 may be located at the distal point D2 at this time, and it remains at the distal point D2 throughout the card pushing process. Simultaneously, the third rotating shaft 522 moves within the first delay arc 513 of the second annular groove 510, while the second driven member 520 remains stationary. When the first rotating shaft 422 moves to the starting point of the second stationary segment 411, the second rotating shaft 423 is located at the distal end D2 of the drive groove 210, and the card pushing rod 200 is also located at the outlet B of the card storage groove 110. At the same time, the third rotating shaft 522 moves to the intersection of the first delay arc 513 and the rising arc 511 of the second annular groove 510. The card pushing motion stops, and the lifting motion is ready to begin.

[0054] As the rotary drive 600 continues to rotate, the third shaft 522 enters the rising arc 511, causing the second swing arm 521 to begin swinging. The second swing arm 521 drives the lifting plate to rise via the rocker arm 730 mechanism 700. Simultaneously, the first shaft 422 enters the second stationary section 411, and the second shaft 423 runs in the first stationary section 211 within the drive groove 210 (from position D2 to position D3). At this time, because the shape of the groove wall of the first stationary section 211 of the drive groove 210 matches the movement trajectory of the second shaft 423, no force is generated between the second shaft 423 and the groove wall of the drive groove 210 to push the pusher 200, and the pusher 200 remains stationary. This continues until the lifting plate 300 rises to its highest point and is flush with the tabletop. After a player finishes a game, the shuffling plate shuffles the mahjong tiles, and the tile feeding device begins to push the stacked mahjong tiles into the storage slot 110. Once a certain number of tiles have been pushed in, the drive gear 120 activates, driving the rotary drive component 600. The first rotating shaft moves along the transition section between the second stationary section 411 and the drive section 412 in the first ring groove 410, while the second rotating shaft 423 moves towards the distal end D2 of the drive groove 210. During this process, the second rotating shaft 423 drives the pusher rod 200 from the outlet of the storage slot 110 to the inlet (i.e., from position B to position A). Simultaneously, the third rotating shaft 522 enters the descending arc 512. When the pusher rod 200 reaches the inlet of the storage slot 110, the lifting plate 300 also descends to its position where it aligns with the outlet of the storage slot 110, completing a lifting motion. Then, the pusher rod 200 begins pushing the tiles. Repeat the above process, and achieve the periodic alternation of pushing and lifting movements by rotating the drive component 600 in one direction.

[0055] Of course, during the process of the lifting plate descending and the pusher 200 moving counterclockwise from the outlet of the card storage slot 110 to the inlet of the card storage slot 110, a second delay arc can be added between the rising arc 511 and the falling arc 512 of the second ring groove 510. That is, when the third rotating shaft 522 runs in the second delay arc, the second swing rod 521 remains stationary, thereby achieving the purpose of the lifting plate 300 remaining stationary while the pusher 200 continues to rotate. When the pusher 200 reaches position C, the pusher 200 moves out of the area directly below the lifting plate 300, and the third rotating shaft 522 enters the falling arc 512 again. The lifting plate 300 begins to descend, and the pusher 200 continues to rotate toward the inlet of the card storage slot 110.

[0056] The entire process only requires a single motor to drive the rotary drive component 600 to rotate in one direction to control the alternating periodic movement of the retraction and lifting motions. Compared with the existing technology that uses incomplete gear switching to switch states, which is prone to interference and abnormal noise, the cam transmission structure of this solution is more stable, the motion trajectory is more controllable, and the risk of friction and collision between mechanisms is significantly reduced.

[0057] like Figure 1 As shown, this utility model also discloses a mahjong machine, including a shuffling tray 800 and four sets of card-feeding devices 900 arranged around the outer periphery of the shuffling tray 800. Each set of card-feeding devices 900 corresponds to a card-pushing and card-raising device of any structure in Embodiment 1. After the shuffling tray 800 shuffles the mahjong tiles, ensuring all tiles face the same direction, the card-feeding devices 900 pick up and stack the mahjong tiles from the shuffling tray 800, and then send them into the card storage slot 110 of the card-pushing and card-raising device. After the mahjong tiles are sent from the shuffling tray 800 by the card-feeding devices 900, they can be quickly and accurately pushed onto the table by the card-pushing and card-raising device, avoiding jamming and misalignment of the mahjong tiles during transmission, greatly shortening the time for playing tiles, improving the player's gaming experience, and ensuring the continuity of the game.

[0058] Furthermore, the card-dispensing direction of the card-feeding device 900 forms an angle of 135° to 180° with the card-infeeding direction of the corresponding card-pushing and card-raising device, the card-raising plate 300. If the angle is less than 135°, the deflection angle between the card-dispensing direction of the card-feeding device 900 and the card-infeeding direction of the card-raising plate 300 is too small, which will cause the card-feeding device 900 to be too close to or even overlap with components such as the card-raising plate 300 and the card storage slot 110 in space; if the angle is greater than 180°, it means that the card-dispensing direction of the card-feeding device 900 and the card-infeeding direction of the card-raising plate 300 form a "reverse" layout, which will result in an excessively long card-feeding path or excessive detour. An angle of 135° to 180° allows the card-dispensing direction of the card-feeding device 900 to form a reasonable connection with the card-infeeding direction of the card storage slot 110. The card-feeding device 900 is set around the outer periphery of the shuffling plate 800, and the card-raising plate 300 is located on the inner side. The two are staggered by a large angle, avoiding interference between components in adjacent groups.

[0059] In addition, the card dispensing port of the card feeding device 900 is equipped with the card pushing rod 200, and the card pushing direction of the card pushing rod 200 forms an angle of 80° to 100° with the card dispensing direction of the card feeding device 900. If the included angle is less than 80°, the turning angle of the pusher rod 200 is insufficient, which will cause the pushing direction of the mahjong tiles to deviate too much from the entering direction of the storage slot 110. The mahjong tiles are prone to colliding with the side wall of the storage slot 110, causing problems such as stuck tiles and scattered tiles. If the included angle is greater than 100°, the pusher rod 200 needs to overcome greater lateral resistance to change the movement trajectory of the mahjong tiles. This will not only increase the load on the drive motor, but may also cause the mahjong tiles to tilt or become misaligned due to uneven force, making it impossible for them to enter the storage slot 110 neatly. With an included angle design of 80° to 100°, the tile feeding device 900 feeds the tiles along a straight line or a small-angle arc, and the pusher rod 200 turns and pushes the mahjong tiles to the storage slot 110 at a near right angle. This avoids direct conflict between the tile feeding direction and the entering direction of the storage slot 110, and ensures that the mahjong tiles can enter smoothly along the tangent direction of the storage slot 110, reducing the problem of stuck tiles or scattered tiles caused by excessive turning.

[0060] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A tile-pushing and tile-lifting device for a mahjong machine, comprising a base, an annular tile storage slot disposed on the base for accommodating mahjong tiles, a pusher for pushing the mahjong tiles in the storage slot, and a tile-lifting plate for raising the mahjong tiles in the storage slot to a tabletop, characterized in that: The direction of card entry at the card storage slot is at an angle of 45° to 90° to the direction of card exit at the card exit slot; The card pushing and lifting device also includes a first cam assembly, a second cam assembly, and a rotary drive unit mounted on the base. The rotary drive unit simultaneously drives the first cam assembly and the second cam assembly. The first cam assembly drives the pusher lever to move, and the pusher lever pushes the mahjong tiles in the storage slot to move; the second cam assembly drives the lifting plate to move up and down, and the pushing and lifting movements are periodically alternated.

2. The tile-pushing and tile-raising device for a mahjong machine as described in claim 1, characterized in that, The first cam assembly includes a first annular groove and a first follower that runs along the first annular groove. The first annular groove is disposed on the base. The rotary drive drives the first follower to move. The push rod is provided with a drive groove that cooperates with the first follower.

3. The tile-pushing and tile-raising device for a mahjong machine as described in claim 2, characterized in that, The first driven member includes a first rocker arm, a first rotating shaft that moves along a first annular groove, and a second rotating shaft that moves along a drive groove. Both the first rotating shaft and the second rotating shaft are disposed on the first rocker arm and are offset from the swing axis of the first rocker arm. The first pendulum is oscillating on the rotary drive, and the oscillation axis of the first pendulum is offset from the rotation axis of the rotary drive.

4. The tile-pushing and tile-raising device for a mahjong machine as described in claim 3, characterized in that, The drive groove includes a first stationary section. When the first driven member moves along the first stationary section of the drive groove, no force is generated between the first driven member and the drive groove to push the pusher rod. The pusher rod remains stationary, and the second cam assembly drives the lifting plate to rise.

5. The tile-pushing and tile-raising device for a mahjong machine as described in claim 4, characterized in that, The first annular groove includes a second stationary section. When the first rotating shaft runs along the second stationary section, the shape of the drive groove wall of the first stationary section is adapted to the movement trajectory of the second rotating shaft, so that no force is generated between the second rotating shaft and the groove wall of the drive groove to push the push rod, and the push rod remains stationary.

6. The tile-pushing and tile-raising device for a mahjong machine as described in claim 2, characterized in that, The drive groove includes a proximal end near the center of rotation of the pusher rod and a distal end away from the center of rotation of the pusher rod. Along the rotation direction of the pusher rod, the proximal end is located upstream of the distal end. When the pusher rod stops, the first follower moves from the distal end to the proximal end.

7. The tile-pushing and tile-raising device for a mahjong machine as described in claim 6, characterized in that, The first annular groove also includes a driving section. When the first driven member moves along the driving section, the first driven member is located at the distal end and abuts against the groove wall of the driving groove to push the pusher rod to perform a pusher motion.

8. The tile-pushing and tile-raising device for a mahjong machine as described in claim 7, characterized in that, The drive section is arc-shaped, and the center of the drive section is located on the rotation axis of the pusher lever.

9. The tile-pushing and tile-raising device for a mahjong machine as described in claim 1, characterized in that, The second cam assembly includes a second annular groove and a second follower running along the second annular groove. The second annular groove is disposed on the rotary drive member, and the second follower drives the rocker arm mechanism to move, thereby causing the lifting plate to rise and fall.

10. The tile-pushing and tile-raising device for a mahjong machine as described in claim 9, characterized in that, The second driven member includes a second rocker arm disposed on the base and a third rotating shaft disposed on the second rocker arm. The second rocker arm is linked with the rocker arm mechanism, and the third rotating shaft moves along the second annular groove to drive the second rocker arm to move the rocker arm mechanism.

11. A tile-pushing and tile-raising device for a mahjong machine as described in claim 9 or 10, characterized in that, The second annular groove includes an ascending arc, a descending arc, and a first delay arc, with the two ends of the first delay arc connected to the ascending arc and the descending arc, respectively.

12. The tile-pushing and tile-raising device for a mahjong machine as described in claim 11, characterized in that, When the second follower moves along the first delayed arc, the card lifting plate remains stationary, and the first cam assembly drives the card pushing rod to perform a card pushing motion.

13. The tile-pushing and tile-raising device for a mahjong machine as described in claim 11, characterized in that, When the second follower moves to the intersection of the first delay arc and the rising arc, the first cam assembly stops driving the pusher lever to push the card, and the lifting plate is ready to start the rising motion.

14. The tile-pushing and tile-raising device for a mahjong machine as described in claim 1, characterized in that, The rotary drive component is a geared disc, and the base is equipped with a motor-driven drive gear. The drive gear meshes with the geared disc to drive the geared disc to rotate.

15. The tile-pushing and tile-raising device for a mahjong machine as described in claim 1, characterized in that, The card dispensing direction of the card storage slot forms an angle of 0° to 5° with the card receiving direction of the card lifting plate.

16. A mahjong machine, comprising a shuffling tray and four sets of card feeding devices arranged around the outer periphery of the shuffling tray, characterized in that: Each set of the card-feeding devices corresponds to a set of card-pushing and card-raising devices as described in any one of claims 1 to 15.

17. A mahjong machine as described in claim 16, characterized in that: The card-dispensing direction of the card-dispensing device forms an angle of 135° to 180° with the card-infeeding direction of the card-lifting plate in the corresponding card-pushing and card-raising device.

18. A mahjong machine as described in claim 16, characterized in that: The card-dispensing port of the card-dispensing device is equipped with the card-pushing rod, and the card-pushing direction of the card-pushing rod is at an angle of 80° to 100° with the card-dispensing direction of the card-dispensing device.

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