Mahjong tile pushing and lifting mechanism of automatic mahjong machine

Abstract

The utility model discloses a tile pushing and lifting mechanism of an automatic mahjong machine, and solves various problems caused by the fact that two sets of tile lifting mechanisms and two sets of tile pushing mechanisms are in meshing transmission through a plurality of gears in the prior art. The tile pushing and lifting mechanism of the automatic mahjong machine comprises a pushing and lifting motor, a tile lifting plate, a tile pushing plate and a transmission mechanism, the pushing and lifting motor alternately drives the tile lifting plate and the tile pushing plate through the transmission mechanism, and the transmission mechanism comprises two gear sets and a transmission shaft which synchronously drives the two gear sets. The gear set comprises a driving gear in transmission with the transmission shaft, a tile lifting gear in transmission with the tile lifting plate and a tile pushing gear in transmission with the tile pushing plate, and the rotating axes of the driving gear, the tile lifting gear and the tile pushing gear in the same set are perpendicular to one another. In the same gear set, one of the driving gear and the tile lifting gear, the driving gear and the tile pushing gear and the tile lifting gear and the tile pushing gear is not meshed, and the other two pairs are meshed with each other.

Description

Technical Field

[0001] This utility model relates to the field of mahjong machines, and in particular to the tile pushing and lifting mechanism of an automatic mahjong machine. Background Technology

[0002] The tile-pushing and lifting mechanism of a mahjong machine is used to push the stacked mahjong tiles from the tile-receiving plate onto the lifting plate, which then lifts the tiles onto the table surface of the mahjong machine. The lifting mechanism includes a tile-lifting mechanism for pushing the lifting plate and a tile-pushing mechanism for pushing the tile-pushing plate. To ensure smooth operation of the lifting and pushing plates, two sets of mechanisms are typically provided. These two sets are connected by several meshing gears, allowing them to move together. For details, please refer to Chinese invention patent application CN109966732A, entitled "A Tiles-Receiving Device for a Mahjong Machine".

[0003] However, the transmission structure is complex and costly due to the meshing of several gears, and the transmission accuracy of this structure is also low. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art by proposing a card pushing and lifting mechanism for an automatic mahjong machine, so as to solve the various problems caused by the meshing transmission of several gears between the two sets of lifting mechanisms and the two sets of pushing mechanisms in the prior art.

[0005] To achieve the above technical objectives, this utility model proposes a tile-pushing and lifting mechanism for an automatic mahjong machine, including a pushing motor, a lifting plate, a pushing plate, and a transmission mechanism. The pushing motor alternately drives the lifting plate and the pushing plate through the transmission mechanism. The transmission mechanism includes two sets of gears and a transmission shaft that synchronously drives the two sets of gears. Each gear set includes a drive gear driven by the transmission shaft, a lifting gear driven by the lifting plate, and a pushing gear driven by the pushing plate. The rotation axes of the drive gear, lifting gear, and pushing gear in the same set are perpendicular to each other. In the same set of gears, one pair of the drive gear and lifting gear, the drive gear and pushing gear, and the lifting gear and pushing gear are not meshed, while the other two pairs are meshed. The number of teeth of the lifting gear is A, the number of teeth of the pushing gear is B, and the number of teeth of the drive gear is C, where A = B ≠ C.

[0006] The card-pushing and card-lifting mechanism of the present utility model realizes the movement of two card-lifting gears and two card-pushing gears driven by one card-pushing and lifting motor through two sets of gear sets driven by a transmission shaft, avoiding the transmission through several meshing gears between the two card-lifting gears and the two card-pushing gears, and simplifying the transmission mechanism. At the same time, by setting the number of teeth of the card-lifting gear as A, the number of teeth of the card-pushing gear as B, and the number of teeth of the driving gear as C, where A = B ≠ C, one pair among the driving gear and the card-lifting gear, the driving gear and the card-pushing gear, and the card-lifting gear and the card-pushing gear in the same set of gear sets does not mesh, and the other two pairs mesh with each other, avoiding the meshing interference among the driving gear, the card-lifting gear and the card-pushing gear, and ensuring the reliable operation of the card-pushing and lifting mechanism.

[0007] Preferably, the card-lifting gear, the card-pushing gear and the driving gear are all bevel gears.

[0008] Adopting the foregoing technical solution, by setting the number of teeth of the driving gear to be different from those of the card-lifting gear and the card-pushing gear, the meshing jamming of the three is avoided. At the same time, the number of teeth of the card-lifting gear and the card-pushing gear is the same, ensuring the consistency of the rotation period when the card-lifting gear and the card-pushing gear rotate synchronously, and making the period of the alternating movement of the card-lifting plate and the card-pushing plate also consistent. Thus, the card-pushing and card-lifting mechanism completes the card-pushing and card-lifting of the mahjong tiles in one operation cycle, simplifying the control.

[0009] Preferably, C > A, the driving gear meshes with the card-lifting gear and the card-pushing gear respectively, and the card-lifting gear and the card-pushing gear do not mesh with each other.

[0010] Adopting the foregoing technical solution, through a reasonable method, the meshing transmission of the driving gear, the card-lifting gear and the card-pushing gear is realized without meshing jamming, ensuring the reliable operation of the card-pushing and lifting mechanism.

[0011] Preferably, C < A, the card-lifting gear meshes with the card-pushing gear, and the driving gear only meshes with one of the card-lifting gear and the card-pushing gear.

[0012] Adopting the foregoing technical solution, through another reasonable method, the meshing transmission of the driving gear, the card-lifting gear and the card-pushing gear is realized without meshing jamming, ensuring the reliable operation of the card-pushing and lifting mechanism.

[0013] Preferably, the driving gear is a crown gear, the card-lifting gear and the card-pushing gear are spur gears, the card-lifting gear and the card-pushing gear do not mesh with each other, and C > A.

[0014] Adopting the foregoing technical solution, through another reasonable method, the meshing transmission and synchronous rotation of the driving gear, the card-lifting gear and the card-pushing gear when their axes of rotation are perpendicular to each other are realized, ensuring the reliable operation of the card-pushing and lifting mechanism.

[0015] Preferably, the rotation axes of the drive gear, the card-lifting gear, and the card-pushing gear intersect at a single point.

[0016] By adopting the aforementioned technical solution, any two meshing gears among the drive gear, lifting gear, and pushing gear are orthogonally meshed, which improves the meshing reliability and meshing efficiency of the meshing gears.

[0017] Preferably, the drive gear includes a base, the transmission shaft passes through the base to drive the drive gear to rotate, and a sliding bearing is provided on the base.

[0018] By adopting the aforementioned technical solution, wear on the drive gear during rotation is reduced, and the service life of the drive gear is improved.

[0019] Preferably, the system also includes a lifting bracket and a slider. The slider slides relative to the lifting bracket. The card-pushing plate is fixed to the slider. The slider has a card-pushing groove. The card-pushing gear has a transmission pin that slides into the card-pushing groove. The rotation of the card-pushing gear drives the transmission pin to move. The transmission pin acts on the groove wall of the card-pushing groove, causing the slider to move so that the card-pushing plate moves in translation. The transmission pin slides along the groove wall of the card-pushing groove without force so that the card-pushing plate remains stationary, thus the movement of the card-pushing plate is staggered from the lifting movement of the card-raising plate.

[0020] With the aforementioned technical solution, since the lifting plate is flush with the mahjong table when the user plays mahjong, the pushing mechanism needs to wait for the lifting plate to descend before pushing the mahjong tile stacks stacked on the receiving plate onto the lifting plate. The pushing plate is kept stationary for a period of time through the cooperation of the pushing bevel gear and the slider, so that the pushing mechanism and the lifting mechanism can cooperate to complete the pushing of the mahjong tile stacks.

[0021] Preferably, one of the lifting bracket and the slider is provided with a guide groove extending along the translational direction of the push plate, and the other is provided with a sliding foot, the sliding foot being limited to the guide groove.

[0022] By adopting the aforementioned technical solution, the design difficulty of the sliding structure of the lifting bracket and the slider is simplified, thereby reducing the production cost of the lifting bracket and the slider.

[0023] Preferably, the lifting plate is provided with a lifting groove, the lifting groove includes a groove wall and an opening, the lifting gear is provided with a swing arm, one end of the swing arm is placed in the lifting groove, the rotation of the lifting gear drives the swing arm to move, the swing arm acts on the groove wall of the lifting groove to drive the lifting plate to move up and down, the swing arm rotates outside the opening to keep the lifting plate stationary, so that the movement of the lifting plate is staggered from the translational movement of the pushing plate.

[0024] By adopting the aforementioned technical solution, when the pushing mechanism pushes the tiles, the lifting plate needs to be kept at the same height as the receiving plate, waiting for the pushing mechanism to push the stacked mahjong tiles onto the lifting plate. Through the cooperation between the lifting bevel gear and the lifting plate, the lifting plate's lifting and lowering motion is kept stationary for a period of time, so that the pushing mechanism and the lifting mechanism can cooperate to complete the pushing of the mahjong tiles.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the tile pushing and lifting mechanism of the automatic mahjong machine in an embodiment of this utility model;

[0027] Figure 2 This is a schematic diagram of the motor, transmission shaft, card lifting mechanism, and card pushing mechanism in an embodiment of this utility model;

[0028] Figure 3 This is a schematic diagram illustrating a meshing transmission relationship between the drive gear, the lifting gear, and the pushing gear in an embodiment of this utility model.

[0029] Figure 4 This is a schematic diagram of the card-lifting mechanism in an embodiment of this utility model;

[0030] Figure 5 This is an exploded view of the card-pushing mechanism in an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of the slider in an embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram of another drive gear, a card-lifting gear, and a card-pushing gear in an embodiment of this utility model.

[0033] Figure label:

[0034] 100. Lifting bracket; 101. Guide groove; 110. Plate support;

[0035] 200, Lifting mechanism; 210, Lifting plate; 211, Lifting slide; 2111, Lifting side wall; 2112, Lowering side wall; 2113, Opening; 220, Guide assembly; 221, Guide post; 222, Guide sleeve.

[0036] 300, card pushing mechanism; 310, card pushing plate; 320, slider; 321, card pushing groove; 3211, card pushing wall; 3212, reset wall; 322, sliding support.

[0037] 400. Transmission mechanism; 410. Drive shaft; 420. Drive gear; 421. Base; 430. Lifting gear; 431. Swing arm; 440. Pushing gear; 441. Transmission pin; 450. Sliding bearing.

[0038] 500. Push motor. Detailed Implementation

[0039] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" or "several" means two or more, unless otherwise expressly defined.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 utility model according to the specific circumstances.

[0043] like Figures 1 to 6As shown in the embodiment of this utility model, an automatic mahjong machine with a tile-pushing and lifting mechanism is proposed, including a lifting bracket 100, a tile-lifting mechanism 200, a tile-pushing mechanism 300, a lifting motor 500, and a transmission mechanism 400. The tile-lifting mechanism 200 and the tile-pushing mechanism 300 are mounted on the lifting bracket 100. The tile-lifting mechanism 200 includes a tile-lifting plate 210, and the tile-pushing mechanism 300 includes a tile-pushing plate 310. The lifting motor 500 alternately drives the tile-lifting plate 210 and the tile-pushing plate 310 through the transmission mechanism 400. The transmission mechanism 400 includes two sets of gears and a transmission shaft 410 synchronously driving between the two sets of gears. The gear sets include a drive gear 420, a tile-lifting gear 430, and a tile-pushing gear 440. The drive gear 420 drives the transmission shaft 410, the tile-lifting gear 430 drives the tile-lifting plate 210, and the tile-pushing gear 440 drives the tile-pushing plate 310. The push motor 500 is connected to the drive shaft 410 via a coupling. The operation of the push motor 500 drives the drive shaft 410 to rotate, and the rotation of the drive shaft 410 drives the two drive gears 420 to rotate synchronously. The drive gear 420, the lifting gear 430, and the pushing gear 440 rotate synchronously.

[0044] The rotation of the lifting gear 430 generates a driving force that drives the lifting plate 210 to move up and down. The rotation of the pushing gear 440 generates a driving force that drives the pushing plate 310 to move in translation. There is only one lifting plate 210 and one pushing plate 310. The two lifting gears 430 drive the lifting plate 210, so that the two sides of the lifting plate 210 are stably stressed and move smoothly. The two pushing gears 440 drive the pushing plate 310, so that the two sides of the pushing plate 310 are stably stressed and run smoothly.

[0045] refer to Figure 2 As shown in the figure, the lifting plate 210 moves along the height direction of the pushing and lifting mechanism, and the lifting gear 430 rotates along the Z-axis shown in the figure; the pushing plate 310 moves along the width direction of the pushing and lifting mechanism, and the pushing gear 440 rotates along the Y-axis shown in the figure; the transmission shaft 410 is set along the length direction of the pushing and lifting mechanism, and the drive gear 420 rotates along the X-axis shown in the figure, so that the rotation axes of the drive gear 420, the lifting gear 430 and the pushing gear 440 in the same group are perpendicular to each other. To avoid meshing interference in the drive gear 420, the lifting gear 430, and the pushing gear 440, one pair of the drive gear 420 and lifting gear 430, the drive gear 420 and pushing gear 440, and the lifting gear 430 and pushing gear 440 in the same gear set are not meshed, while the other two pairs mesh with each other. The number of teeth of the lifting gear 430 is A, the number of teeth of the pushing gear 440 is B, and the number of teeth of the drive gear 420 is C, where A = B ≠ C.

[0046] By having a different number of teeth than the lifting gear 430 and the pushing gear 440, the rotation axes of the three gears are made perpendicular to each other. During meshing transmission, a gap is generated between two of the gears, causing them to disengage and preventing the three gears from seizing together.

[0047] The card-pushing and lifting mechanism of this utility model achieves the movement of two card-lifting gears 430 and two card-pushing gears 440 driven by one lifting motor 500 through two sets of gears driven by the transmission shaft 410. This avoids the transmission between the two card-lifting gears 430 and the two card-pushing gears 440 through several meshing gears, simplifying the transmission mechanism 400. At the same time, by having A as the number of teeth of the card-lifting gear 430, B as the number of teeth of the card-pushing gear 440, and C as the number of teeth of the driving gear 420, where A=B≠C, one pair of driving gear 420 and card-lifting gear 430, driving gear 420 and card-pushing gear 440, and card-lifting gear 430 and card-pushing gear 440 in the same gear set is not meshed, while the other two pairs mesh with each other. This avoids meshing interference among the driving gear 420, card-lifting gear 430, and card-pushing gear 440, ensuring the reliable operation of the lifting mechanism.

[0048] In one embodiment, such as Figure 2 As shown, the lifting gear 430, the pushing gear 440, and the driving gear 420 are all bevel gears.

[0049] Because of the meshing method between bevel gears, three bevel gears with the same number of teeth will mesh and interfere when their rotation axes are perpendicular to each other. This can cause the three bevel gears to seize up and become unable to transmit power.

[0050] In this embodiment, the number of teeth of the drive gear 420 is different from the number of teeth of the lifting gear 430 and the pushing gear 440, so that the rotation axes of the three bevel gears are perpendicular to each other. During meshing transmission, a gap is generated between two of the bevel gears and they disengage, thus avoiding the three bevel gears from seizing together.

[0051] By setting the number of teeth of the drive gear 420 to be different from that of the tile-lifting gear 430 and the tile-pushing gear 440, the meshing and seizing of the three are avoided. At the same time, the number of teeth of the tile-lifting gear 430 and the tile-pushing gear 440 is the same, which ensures that the rotation cycle of the tile-lifting gear 430 and the tile-pushing gear 440 is consistent when they rotate synchronously. This makes the cycle of the alternating movement of the tile-lifting plate 210 and the tile-pushing plate 310 consistent as well. Thus, the tile-pushing and tile-lifting mechanism completes the pushing and lifting of mahjong tiles in one operating cycle, simplifying the control.

[0052] In one embodiment, such as Figure 2As shown in the figure, for the pushing and lifting mechanism of the automatic mahjong machine based on the foregoing embodiment, a tooth number relationship of the three bevel gears of the driving gear 420, the lifting gear 430, and the pushing gear 440 is described. C > A. The driving gear 420 meshes with the lifting gear 430 and the pushing gear 440 respectively, and the lifting gear 430 and the pushing gear 440 do not mesh with each other.

[0053] In this embodiment, the lifting gear 430 and the pushing gear 440 are arranged on the same side of the driving gear 420. The driving gear 420 has a bevel gear portion. The lifting gear 430 and the pushing gear 440 are respectively meshed with the side surface and the upper end of the driving gear 420. Since the number of teeth of the driving gear 420 is relatively large, the diameter of the driving gear 420 is correspondingly large, and the lifting gear 430 and the pushing gear 440 are respectively meshed with both ends of the driving gear 420, so that a spacing is generated between the lifting gear 430 and the pushing gear 440, and the lifting gear 430 and the pushing gear 440 do not mesh with each other, avoiding the jamming and non-meshing transmission of the driving gear 420, the lifting gear 430, and the pushing gear 440.

[0054] With such a setting, through a reasonable method, the meshing transmission of the driving gear 420, the lifting gear 430, and the pushing gear 440 is realized without the occurrence of meshing jamming, ensuring the reliable operation of the pushing and lifting mechanism.

[0055] Preferably in this embodiment, the driving gear 420 is orthogonally meshed with the lifting gear 430 and the pushing gear 440, and the rotation axes of the driving gear 420, the lifting gear 430, and the pushing gear 440 intersect at one point. That is, the X-axis, the Y-axis, and the Z-axis intersect at one point.

[0056] With such a setting, any two meshed gears among the driving gear 420, the lifting gear 430, and the pushing gear 440 are orthogonally meshed, improving the meshing reliability of the two meshed gears and the meshing efficiency.

[0057] In another embodiment, for the pushing and lifting mechanism of the automatic mahjong machine based on the foregoing embodiment, another tooth number relationship of the three bevel gears of the driving gear 420, the lifting gear 430, and the pushing gear 440 is described. C < A. The driving gear 420 meshes with the lifting gear 430, and the driving gear 420 does not mesh with the pushing gear 440.

[0058] In this embodiment, the lifting gear 430 and the pushing gear 440 are located on the same side of the drive gear 420. The drive gear 420 has a beveled tooth portion. The lifting gear 430 meshes with the side of the drive gear 420, and the pushing gear 440 meshes with the upper end of the lifting gear 430. Because the drive gear 420 has a smaller number of teeth, its diameter is also smaller, resulting in a gap between the drive gear 420 and the pushing gear 440. This prevents the drive gear 420 and the pushing gear 440 from meshing, thus avoiding the drive gear 420, the lifting gear 430, and the pushing gear 440 from seizing up and failing to engage for transmission.

[0059] Among them, you can refer to Figure 2 To understand this, the drive gear 420 orthogonally meshes with the lifting gear 430, and the X-axis and Z-axis intersect at one point. The lifting gear 430 orthogonally meshes with the pushing gear 440, and the Z-axis and Y-axis intersect at one point. The two intersection points do not coincide.

[0060] It is understandable that the drive gear 420 engages with the push gear 440, the push gear 440 engages with the lift gear 430, and the drive gear 420 and the lift gear 430 do not engage.

[0061] This configuration, through another reasonable method, enables the meshing transmission of the drive gear 420, the lifting gear 430, and the pushing gear 440 without causing meshing jamming, thus ensuring the reliable operation of the lifting mechanism.

[0062] In one embodiment, such as Figure 7 As shown, the drive gear 420 is a crown gear, the card-lifting gear 430 and the card-pushing gear 440 are spur gears, the card-lifting gear 430 and the card-pushing gear 440 do not mesh, and C>A.

[0063] The drive gear 420 has a roughly triangular tooth profile, with several teeth arranged radially from the center to the edge on its end face. The drive gear 420 is configured as a crown gear to achieve right-angle transmission with the spur gear 430 and the push gear 440, which are configured as spur gears.

[0064] In this embodiment, the lifting gear 430 and the pushing gear 440 are located on the same side of the drive gear 420, and the lifting gear 430 and the pushing gear 440 mesh with the side and upper end of the drive gear 420, respectively. Because the drive gear 420 has a large number of teeth, its diameter is also correspondingly large, resulting in a gap between the lifting gear 430 and the pushing gear 440. There is no interference between the lifting gear 430 and the pushing gear 440, and they can rotate synchronously when their rotation axes are perpendicular to each other.

[0065] This configuration, through another reasonable method, enables the meshing transmission and synchronous rotation of the drive gear 420, the lifting gear 430, and the pushing gear 440 when their rotation axes are perpendicular to each other, ensuring the reliable operation of the lifting mechanism.

[0066] Among them, the drive gear 420 orthogonally meshes with the lifting gear 430 and the pushing gear 440, and the rotation axes of the drive gear 420, the lifting gear 430 and the pushing gear 440 intersect at a point. That is, the X-axis, Y-axis and Z-axis intersect at a point.

[0067] This configuration ensures that any two meshing gears among the drive gear 420, lifting gear 430, and pushing gear 440 are orthogonally meshed, improving the meshing reliability and efficiency of the meshing gears.

[0068] In one embodiment, such as Figure 3 As shown, the drive gear 420 includes a base 421, and a transmission shaft 410 passes through the base 421 to drive the drive gear 420 to rotate. A sliding bearing 450 is provided on the base 421.

[0069] The base 421 rotates relative to the lifting bracket 100 via the sliding bearing 450, thus avoiding friction between the drive gear 420 and the lifting bracket 100. The sliding bearing 450 may be partially wrapped around the base 421 or wrapped around the lower part of the base 421; the sliding bearing 450 may also have a break in the gap to facilitate the passage of the drive shaft 410, and the sliding bearing 450 may be sleeved on the drive shaft 410 and laterally sleeved on the base 421; the sliding bearing 450 may also be assembled by splicing two bearing bushes.

[0070] This design reduces wear on the drive gear 420 during rotation and extends its service life.

[0071] In one embodiment, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, the automatic mahjong machine's tile-pushing and lifting mechanism based on the aforementioned embodiment further includes a sliding block 320 that can slide relative to the lifting bracket 100. A tile-pushing plate 310 is fixed to the sliding block 320, and the sliding block 320 is provided with a tile-pushing groove 321. A drive pin 441 is provided on the tile-pushing gear 440, and the drive pin 441 is slidably engaged in the tile-pushing groove 321. The two ends of the tile-pushing groove 321 are respectively located on the left and right sides of the sliding block 320, and the straight-line distance between the two ends is not less than the outer diameter of the movement trajectory of the drive pin 441. Two sliding blocks 320 are provided, and the two tile-pushing gears 440 respectively drive the two sliding blocks 320 to move.

[0072] The groove wall of the pusher slide 321 includes a pusher wall 3211 and a reset wall 3212. The rotation of the pusher gear 440 drives the transmission pin 441 to slide from the first end of the pusher slide 321 to the center of the pusher slide 321. The transmission pin 441 acts on the pusher wall 3211 to push the slider 320 to move forward.

[0073] As the pusher gear 440 continues to rotate, it drives the transmission pin 441 to slide from the center of the pusher groove 321 to the second end. The transmission pin 441 acts on the reset wall 3212 to push the slider 320 to move backward and reset.

[0074] As the pusher gear 440 continues to rotate, it drives the transmission pin 441 to slide from the second end to the first end. A channel is formed between the pusher wall 3211 and the reset wall 3212, allowing the transmission pin 441 to slide freely. The transmission pin 441 slides in the channel relative to the slider 320 without any force, so that the pusher plate remains stationary 310. Thus, the movement of the pusher plate is staggered from the lifting movement of the lifting plate 210.

[0075] The reset wall 3212 is arc-shaped and conforms to the movement trajectory of the outer edge of the transmission pin 441. A gap at least larger than the diameter of the transmission pin 441 is reserved between the push wall 3211 and the reset wall 3212 in the front-back direction, allowing the transmission pin 441 to slide freely relative to the slider 320 without force during the second idle stroke. The gap between the push wall 3211 and the reset wall 3212 determines the pushing process and stroke of the push mechanism 300 in advancing the mahjong tile stack. Therefore, push grooves 321 of different sizes allow the push mechanism 300 to have different pushing strokes, thus adapting to mahjong tiles of different sizes.

[0076] When a user plays mahjong, the tile-lifting plate 210 is flush with the mahjong table. The tile-pushing mechanism needs to wait for the tile-lifting plate 210 to descend before pushing the mahjong tile stacks arranged on the tile-bearing plate 110 onto the tile-lifting plate 210. The tile-pushing gear 440 and the slider 320 work together to keep the tile-pushing plate 310 stationary for a period of time, so that the tile-pushing mechanism and the tile-lifting mechanism 200 can work together to complete the pushing of the mahjong tile stacks.

[0077] In one embodiment, such as Figure 5 As shown, the lifting bracket 100 is provided with a guide groove 101 extending along the translation direction of the push plate 310, and the slider 320 is provided with a sliding foot 322, which is slidably limited in the guide groove 101.

[0078] In some other embodiments, a guide groove 101 may be provided on the slider 320, and a corresponding sliding support foot 322 may be provided on the lifting bracket 100.

[0079] This design simplifies the design of the sliding structure of the lifting bracket 100 and the slider 320, thereby reducing the production cost of the lifting bracket 100 and the slider.

[0080] Preferably, the guide groove 101 has an "L"-shaped cross-section, and the sliding foot 322 is adapted to the shape of the guide groove 101, so that the sliding foot 322 is limited to sliding within the guide groove 101. In this way, the sliding foot 322 can be prevented from disengaging from the guide groove 101, thereby improving the sliding stability of the slider 320.

[0081] In one embodiment, the tile-pushing and tile-raising mechanism of the automatic mahjong machine based on the foregoing embodiments, such as Figure 4 , Figure 5 As shown, the lifting plate 210 is provided with a lifting groove 211, which includes a groove wall and an opening 2113. The lifting gear 430 is provided with a swing arm 431, one end of which is placed in the lifting groove 211. The rotation of the lifting gear 430 drives the swing arm 431 to move. The swing arm 431 acts on the groove wall of the lifting groove 211 and drives the lifting plate 210 to move up and down. The swing arm 431 rotates outside the opening 2113 to keep the lifting plate 210 stationary, so that the movement of the lifting plate 210 is staggered from the translational movement of the pushing plate.

[0082] The end of the swing arm 431 is provided with a support rod (not shown), and the swing arm 431 acts on the lifting slide 211 through the support rod.

[0083] In this embodiment, the walls of the lifting chute 211 include a lifting side wall 2111 and a lowering side wall 2112. The rotation of the lifting gear 430 causes the swing arm 431 to act on the lifting side wall 2111, thereby raising the lifting plate 210. The continued rotation of the lifting gear 430 causes the swing arm 431 to act on the lowering side wall 2112, causing the lifting plate 210 to descend. The continued rotation of the lifting gear 430 causes the swing arm 431 to rotate outside the opening 2113, keeping the lifting plate 210 stationary. Two lifting chute 211s are provided, and the two lifting gears 430 respectively cooperate with the two lifting chute 211s to raise or lower the lifting plate.

[0084] When the pushing mechanism pushes the tiles, the lifting plate 210 needs to be kept at the same height as the receiving plate 110 to wait for the pushing mechanism to push the stacked mahjong tiles onto the lifting plate 210. Through the cooperation between the lifting gear 430 and the lifting plate 210, the lifting plate 210 can remain stationary for a period of time, so that the pushing mechanism and the lifting mechanism 200 can cooperate to complete the pushing of the mahjong tiles.

[0085] In this embodiment, the card lifting mechanism 200 further includes a guide assembly 220, which includes two guide posts 221 and two guide sleeves 222 that slide together. One of the guide posts 221 and the guide sleeves 222 is fixed to the lifting bracket 100, and the other is fixed to the card lifting plate 210. The card lifting plate 210 moves up and down relative to the lifting bracket 100 through the guide posts 221 and the guide sleeves 222.

[0086] The movement of the tile pushing and lifting mechanism of the automatic mahjong machine is described below.

[0087] The plate lifting mechanism 200 has a lifting stroke, a lowering stroke, and a first empty stroke. During the lifting stroke, the plate lifting plate 210 rises. During the lowering stroke, the plate lifting plate 210 descends and resets. During the first empty stroke, the plate lifting plate 210 remains stationary.

[0088] The card-pushing mechanism 300 has a card-pushing stroke, a reset stroke, and a second idle stroke. During the card-pushing stroke, the card-pushing plate 310 moves forward to push the card. During the reset stroke, the card-pushing plate 310 moves backward to reset. During the second idle stroke, the card-pushing plate 310 remains stationary.

[0089] The card-raising stroke, the card-lowering stroke, and the first empty stroke are executed in a cyclical manner. In addition, the card-pushing stroke, the card-resetting stroke, and the second empty stroke are executed in a cyclical manner. At the same time, the first empty stroke covers the card-pushing stroke and the second empty stroke covers the card-lowering stroke.

[0090] When the pushing mechanism 300 performs the pushing stroke, it pushes the mahjong tile stacks arranged on the receiving plate 110 onto the lifting plate 210. At this time, the lifting plate 210 and the receiving plate 110 are at the same height. The lifting mechanism 200 performs the first empty stroke, which covers the pushing stroke, thereby ensuring that the lifting mechanism 200 remains stationary during the pushing process and that the pushing mechanism 300 can accurately push the mahjong tile stacks onto the lifting plate 210.

[0091] When the pusher mechanism 300 performs its reset stroke, the lifter mechanism 200 performs its lift stroke to send the mahjong tile stacks onto the mahjong machine's tabletop. The lifter plate 210 is kept at the same height as the tabletop for easy access by the user. The reset of the pusher plate 310 leaves space on the receiving plate 110 for placing the mahjong tile stacks, making it easier for the mahjong machine's tile sorting mechanism to arrange and stack the sorted mahjong tile stacks onto the receiving plate 110 in sequence.

[0092] When the pusher plate 310 performs its second empty stroke, the lifting mechanism 200 performs its lowering stroke, and the lifting plate 210 descends to the same height as the receiving plate 110. The second empty stroke covers the lowering stroke. Firstly, this ensures that the pusher plate 310 has completed its reset stroke before the lifting mechanism 200 descends, so the pusher plate 310 will not interfere with the mahjong tile stacks pushed onto the receiving plate 110, ensuring that the mahjong tile stacks can be stacked on the receiving plate 110 in sequence. Secondly, it ensures that the lifting plate 210 has descended to its position before the pushing mechanism 300 performs its subsequent pushing stroke, so the lifting plate 210 will not affect the pushing of tiles by the pushing mechanism 300.

[0093] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A tile-pushing and lifting mechanism for an automatic mahjong machine, comprising a pushing motor, a lifting plate, a pushing plate, and a transmission mechanism, wherein the pushing motor alternately drives the lifting plate and the pushing plate through the transmission mechanism, characterized in that, The transmission mechanism includes two sets of gear sets and a transmission shaft for synchronously driving the two sets of gear sets. Each gear set includes a driving gear driving on the transmission shaft, a card-lifting gear driving on the card-lifting plate, and a card-pushing gear driving on the card-pushing plate. The rotation axes of the driving gear, the card-lifting gear, and the card-pushing gear in the same set are perpendicular to each other. In the same set of gear sets, one pair among the driving gear and the card-lifting gear, the driving gear and the card-pushing gear, and the card-lifting gear and the card-pushing gear does not mesh, and the other two pairs mesh with each other. The number of teeth of the card-lifting gear is A, the number of teeth of the card-pushing gear is B, and the number of teeth of the driving gear is C, and A = B ≠ C.

2. The card-pushing and card-raising mechanism as described in claim 1, characterized in that, The card-lifting gear, the card-pushing gear, and the driving gear are all bevel gears.

3. The card-pushing and card-raising mechanism as described in claim 2, characterized in that, C > A, the driving gear meshes with the card-lifting gear and the card-pushing gear respectively, and the card-lifting gear and the card-pushing gear do not mesh with each other.

4. The card-pushing and card-raising mechanism as described in claim 2, characterized in that, C < A, the card-lifting gear meshes with the card-pushing gear, and the driving gear only meshes with one of the card-lifting gear and the card-pushing gear.

5. The card-pushing and card-raising mechanism as described in claim 1, characterized in that, The driving gear is a crown gear, the card-lifting gear and the card-pushing gear are spur gears, the card-lifting gear and the card-pushing gear do not mesh, and C > A.

6. The card-pushing and card-raising mechanism as described in claim 3 or 5, characterized in that, The rotation axes of the driving gear, the card-lifting gear, and the card-pushing gear intersect at one point.

7. The tile-pushing and tile-raising mechanism of the automatic mahjong machine as described in any one of claims 1 to 5, characterized in that, The driving gear includes a base, the transmission shaft passes through the base to drive the driving gear to rotate, and a sliding bearing is provided on the base.

8. The tile-pushing and tile-raising mechanism of the automatic mahjong machine as described in claim 1, characterized in that, It further includes a card-pushing and lifting bracket and a slider. The slider slides translationally relative to the card-pushing and lifting bracket. The card-pushing plate is fixed on the slider. A card-pushing chute is provided on the slider. A transmission pin is provided on the card-pushing gear and is slidably fitted in the card-pushing chute. The rotation of the card-pushing gear drives the transmission pin to move. The transmission pin acts on the wall of the card-pushing chute to drive the slider to move so that the card-pushing plate moves translationally. The transmission pin slides on the wall of the card-pushing chute without acting force to make the card-pushing plate immobile, so that the movement of the card-pushing plate is staggered from the lifting movement of the card-lifting plate.

9. The tile-pushing and tile-raising mechanism of the automatic mahjong machine as described in claim 8, characterized in that, One of the card-pushing and lifting bracket and the slider is provided with a guiding groove extending along the translational direction of the card-pushing plate, and the other is provided with a sliding support foot, and the sliding support foot is slidably limited in the guiding groove.

10. The tile-pushing and tile-raising mechanism of the automatic mahjong machine as described in claim 8, characterized in that, A lifting chute is provided on the card-lifting plate. The lifting chute includes a chute wall and an opening. An oscillating arm is provided on the card-lifting gear. One end of the oscillating arm is placed in the lifting chute. The rotation of the card-lifting gear drives the oscillating arm to move. The oscillating arm acts on the chute wall of the lifting chute to drive the card-lifting plate to move up and down. The oscillating arm rotates outside the opening to make the card-lifting plate immobile, so that the movement of the card-lifting plate is staggered from the translational movement of the card-pushing plate.

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