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, which solves various problems caused by meshing transmission between two sets of tile lifting mechanisms and two sets of tile pushing mechanisms in the automatic mahjong machine through a plurality of gears. 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 tile lifting mechanism is provided with the tile lifting plate moving in the first direction, the tile pushing mechanism is provided with the tile pushing plate moving in the second direction, and the transmission mechanism is arranged among the pushing and lifting motor, the tile lifting mechanism and the tile pushing mechanism in a transmission mode. The transmission mechanism comprises two gear sets and a transmission shaft, each gear set comprises a driving gear, a tile lifting gear and a tile pushing gear, the driving gear, the tile lifting gear and the tile pushing gear in the same set rotate synchronously, and the pushing and lifting motor drives one of the driving gear, the tile lifting gear and the tile pushing gear in the same set to rotate. The transmission shaft is connected with the two driving gears so that the two gear sets can rotate synchronously.

Description

Technical Field

[0001] This utility model relates to the field of automatic mahjong machine technology, and in particular to a tile pushing and lifting mechanism for 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 and propose an automatic mahjong machine push and lift mechanism to solve the various problems caused by the meshing transmission of several gears between the two sets of lift mechanisms and the two sets of push mechanisms in the automatic mahjong machine.

[0005] To achieve the above technical objectives, this utility model proposes a tile-pushing and lifting mechanism for an automatic mahjong machine, comprising a pushing motor, a tile-lifting plate that performs lifting and lowering motion, and a tile-pushing plate that performs reciprocating translational motion. The tile-pushing and lifting mechanism also includes a transmission assembly, which comprises two gear sets and a transmission shaft. Each gear set includes a drive gear, a tile-lifting gear, and a tile-pushing gear. The tile-lifting gear drives the tile-lifting plate to move, and the tile-pushing gear drives the tile-pushing plate to move. The drive gears in the same gear set mesh with the tile-lifting gear and the tile-pushing gear in the same gear set, respectively. The pushing motor is driven by the transmission shaft or any gear in one of the gear sets. The transmission shaft connects two drive gears to make the two gear sets rotate synchronously.

[0006] The card-pushing and card-lifting mechanism of this utility model is driven between the drive gears of two sets of gears through a transmission shaft, which reduces the number of components for synchronous transmission between the two sets of gears, thereby simplifying the transmission structure between the two sets of gears and reducing costs.

[0007] Preferably, the drive gear, the card-lifting gear, and the card-pushing gear have the same number of teeth. The rotation axis of the card-lifting gear is the X-axis, the rotation axis of the card-pushing gear is the Y-axis, and the rotation axis of the drive gear is the Z-axis. The X-axis, Y-axis, and Z-axis are perpendicular to each other. The drive gear is a crown gear, and the card-lifting gear and the card-pushing gear are spur gears. The X-axis intersects the Y-axis.

[0008] By adopting the aforementioned technical solution, through the cooperation of a crown gear and two spur gears, the crown gear meshes with the two spur gears at right angles, so that the drive gear, the lifting gear and the pushing gear can mesh and transmit power when they have the same number of teeth and their rotation axes are perpendicular to each other, thereby simplifying the design difficulty of the gear set.

[0009] Preferably, the X-axis, Y-axis, and Z-axis intersect at a single point.

[0010] Using the aforementioned technical solution, the drive gear and the lifting gear, as well as the drive gear and the pushing gear, are all orthogonally meshed.

[0011] Preferably, the lifting gear and the Y-axis are located on opposite sides of the Z-axis, the vertical distance between the end face of the lifting gear and the Y-axis is L1, and the addendum circle radius of the pushing gear is R1, where L1>R1.

[0012] By adopting the aforementioned technical solution and through the above-mentioned settings, interference between the push gear and the lift gear is avoided, while the meshing area between the drive gear and the push gear and lift gear is increased, thereby improving the meshing degree between the drive gear and the push gear and lift gear.

[0013] Preferably, the tip circle radius of the lifting gear is R2, and the vertical distance between the end face of the pushing gear and the X-axis is H1, where R2>H1.

[0014] By adopting the aforementioned technical solution, the overlap in this part reduces the size of the gear set in the height direction, thereby reducing the overall height of the gear set and making the gear set more compact.

[0015] Preferably, the pusher gear and the X-axis are located on opposite sides of the Z-axis, the vertical distance between the end face of the pusher gear and the X-axis is L2, and the addendum circle radius of the pusher gear is R2, where L2>R2.

[0016] By adopting the aforementioned technical solution and through the above-mentioned settings, interference between the push gear and the lift gear is avoided, while the meshing area between the drive gear and the push gear and lift gear is increased, thereby improving the meshing degree between the drive gear and the push gear and lift gear.

[0017] Preferably, the tip circle radius of the pusher gear is R1, and the vertical distance between the end face of the lifter gear and the Y-axis is H2, where R1>H2.

[0018] By adopting the aforementioned technical solution, this overlap reduces the size of the gear set in the width direction, thereby reducing the overall width of the gear set and making the gear set more compact.

[0019] Preferably, the card-lifting gear and the Y-axis are located on opposite sides of the Z-axis, the vertical distance between the end face of the card-lifting gear and the Y-axis is L1, the addendum circle radius of the card-pushing gear is R1, L1>R1, and the card-pushing gear and the X-axis are located on opposite sides of the Z-axis, the vertical distance between the end face of the card-pushing gear and the X-axis is L2, the addendum circle radius of the card-lifting gear is R2, L2>R2.

[0020] By adopting the aforementioned technical solution and through the above-mentioned settings, interference between the push gear and the lift gear is avoided, while the meshing area between the drive gear and the push gear and lift gear is increased, thereby improving the meshing degree between the drive gear and the push gear and lift gear.

[0021] Preferably, the drive gear, the card-lifting gear, and the card-pushing gear have the same number of teeth. The rotation axis of the card-lifting gear is the X-axis, the rotation axis of the card-pushing gear is the Y-axis, and the rotation axis of the drive gear is the Z-axis. The X-axis, Y-axis, and Z-axis are perpendicular to each other. The drive gear is a spur gear, and the card-lifting gear and the card-pushing gear are crown gears. The X-axis intersects the Y-axis.

[0022] By adopting the aforementioned technical solution, through the cooperation of a spur gear and two crown gears, the spur gear meshes with the two crown gears at right angles, so that the drive gear, the lifting gear and the pushing gear can mesh and transmit power when they have the same number of teeth and their rotation axes are perpendicular to each other, thereby simplifying the design difficulty of the gear set.

[0023] Preferably, the system also includes a lifting bracket, which is provided with a mounting base. The mounting base has a first end face, a second end face, and a third end face that are perpendicular to each other. A first connecting seat is protruding from the first end face, and a second connecting seat is protruding from the second end face. The drive gear rotates parallel to the third end face. The card-lifting gear is rotatably connected to the first connecting seat, and one end of the card-lifting gear abuts against the first end face. The card-pushing gear is rotatably connected to the second connecting seat, and one end of the card-pushing gear abuts against the second end face.

[0024] By adopting the aforementioned technical solution and through the above-mentioned settings, the lifting gear and the pushing gear are respectively limited to the mounting base, thereby limiting the installation position of the lifting gear and the pushing gear. The lifting gear and the pushing gear do not need to be aligned with the drive gear, which reduces the installation difficulty of the lifting gear and the pushing gear.

[0025] Preferably, the lifting bracket includes a plate, which is partially recessed to form a receiving groove for receiving the pushing gear, and the groove wall is connected to the mounting base.

[0026] By adopting the aforementioned technical solution, the strength of the lifting bracket in the receiving groove area can be increased by connecting the groove wall of the receiving groove to the mounting base.

[0027] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the card pushing and lifting mechanism in an embodiment of this utility model;

[0029] Figure 2 This is another schematic diagram of the card pushing and lifting mechanism in this embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the push motor, two gear sets and drive shaft in an embodiment of this utility model;

[0031] Figure 4 This is a schematic diagram of the meshing of three gears in the gear set in an embodiment of this utility model;

[0032] Figure 5 This is another schematic diagram showing the engagement of three gears in the gear set in an embodiment of this utility model;

[0033] Figure 6 This is another schematic diagram showing the engagement of three gears in the gear set in an embodiment of this utility model;

[0034] Figure 7 This is another schematic diagram showing the engagement of three gears in the gear set in an embodiment of this utility model;

[0035] Figure 8 This is another schematic diagram of the three gears in the gear set in this embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the lifting bracket in an embodiment of the present utility model;

[0037] Figure 10 for Figure 9 Enlarged view of point A in the middle;

[0038] Figure 11 This is an exploded view of the card-lifting gear, card-pushing gear, and lifting bracket in an embodiment of this utility model;

[0039] Figure 12 This is a schematic diagram of the card-pushing gear in an embodiment of the present utility model;

[0040] Figure 13 This is a schematic diagram of the lifting gear in an embodiment of this utility model;

[0041] Figure 14 This is an exploded view of the card-pushing mechanism and card-pushing gear in an embodiment of this utility model.

[0042] Figure label:

[0043] 100. Lifting bracket; 110. Mounting base; 111. First end face; 112. Second end face; 113. Third end face; 114. First connecting base; 115. Second connecting base; 120. Plate support; 130. Receiving groove; 131. Groove wall; 132. Notch.

[0044] 200. Lifting plate; 210. Lifting slide;

[0045] 300. Card pusher plate; 310. Slider; 311. Card pusher chute;

[0046] 400. Transmission assembly; 410. Drive shaft; 420. Drive gear; 430. Lifting gear; 431. Lifting gear body; 4311. First tooth; 4312. First annular boss; 432. First end cover; 4321. First bushing; 4322. First cover; 433. Swing arm; 440. Pushing gear; 441. Pushing gear body; 4411. Second tooth; 4412. Second annular boss; 442. Second end cover; 4421. Second bushing; 4422. Second cover; 443. Transmission pin; 450. Sliding bearing;

[0047] 500. Thrust motor; 510. Coupling. Detailed Implementation

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] like Figures 1 to 7 , Figure 14 As shown in the embodiment of this utility model, an automatic mahjong machine's tile-pushing and lifting mechanism includes a pushing bracket 100, a tile-lifting plate 200, a tile-pushing plate 300, a transmission assembly 400, and a pushing motor 500. The tile-lifting plate 200 and the tile-pushing plate 300 are mounted on the pushing bracket 100. The tile-lifting plate 200 performs lifting and lowering movements, while the tile-pushing plate 300 performs reciprocating translational movements.

[0053] The transmission assembly 400 includes two gear sets and a transmission shaft 410. Each gear set includes a drive gear 420, a card-lifting gear 430, and a card-pushing gear 440. The card-lifting gear 430 drives the card-lifting plate 200 to move, and the card-pushing gear 440 drives the card-pushing plate 300 to move. The drive gear 420 in the same gear set meshes with the card-lifting gear 430 and the card-pushing gear 440 in the same gear set.

[0054] In this embodiment, two drive gears 420 are fixed at both ends of the transmission shaft 410. A coupling 510 is installed on the motor shaft of the lifting motor 500. The end of the coupling 510 away from the lifting motor 500 is connected to the drive gear 420 through a keyway, so that the operation of the lifting motor 500 drives the two drive gears 420 to rotate synchronously.

[0055] In some other embodiments, the push motor 500 drives one of the lifting gears 430 or the pushing gear 440 to rotate, causing the drive gear 420 in the same group to rotate accordingly. The drive gear 420 causes the other drive gear 420 to rotate via a transmission shaft, thereby making the two gear sets rotate synchronously.

[0056] In some other embodiments, the push motor 500 can also directly drive the drive shaft 420 to rotate, with two drive gears 420 fixed on the drive shaft 410, so that the two sets of gears rotate synchronously.

[0057] The card pushing and lifting mechanism of this utility model is driven between two sets of gears through a transmission shaft 410, which reduces the number of components for synchronous transmission between the two sets of gears, thereby simplifying the transmission structure between the two sets of gears and reducing costs.

[0058] refer to Figure 3 The lifting plate 200 moves along the height direction of the lifting bracket 100, and the lifting gear 430 rotates along the X-axis shown in the figure; the pushing plate 300 moves along the width direction of the lifting bracket 100, 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 lifting bracket 100, and the drive gear 420 rotates along the Z-axis shown in the figure, so that the rotation axes of the drive gear 420, the lifting gear 430 and the pushing gear 440 are perpendicular to each other.

[0059] In this embodiment, reference Figure 2 The lifting plate 200 reciprocates up and down along the height direction of the lifting bracket 100. The lifting plate 200 is provided with a lifting slide 210, and the lifting gear 430 is provided with a swing arm 433. The lifting slide 210 includes a groove wall and an opening. One end of the swing arm 433 is placed in the lifting slide 210. The rotation of the lifting gear 430 drives the swing arm 433 to move. The swing arm 433 acts on the groove wall of the lifting slide 210 and drives the lifting plate 200 to move up and down. The swing arm 433 rotates outside the opening so that the lifting plate 200 remains stationary under the action of gravity.

[0060] In this embodiment, reference Figure 14The push plate 300 reciprocates along the width of the lifting bracket 100, and the lifting bracket 100 is equipped with a slider 310 that performs translational sliding motion. The slider 310 and the lifting bracket 100 are slidably connected by sliding feet and a sliding groove. The push plate 300 is fixed on the slider 310, and the slider 310 is equipped with a push plate groove 311. The push plate gear 440 is equipped with a transmission pin, which is slidably engaged in the push plate groove 311. The two ends of the push plate groove 311 are located on the left and right sides of the slider 310, and the vertical distance between the two ends is not less than the outer diameter of the movement trajectory of the transmission pin 441. The pusher slide 311 is arc-shaped and fits into the movement trajectory of the outer edge of the transmission pin. This allows the pusher gear 440 to rotate, and through the cooperation between the transmission pin and the pusher slide 311, the pusher plate 300 to perform a reciprocating translational motion. Because the arc shape of the pusher slide 311 fits into the movement trajectory of the outer edge of the transmission pin, there is a period during which the transmission pin has no force against the pusher slide 311 as it rotates with the pusher gear 440. During this period, the pusher plate 300 remains stationary and cannot move.

[0061] The upper end of the lifting bracket 100 is provided with a tile-bearing plate 110. The stacking and pushing mechanism of the automatic mahjong machine pushes the mahjong tiles onto the tile-bearing plate 110. The translational movement of the push plate 300 pushes the mahjong tiles on the tile-bearing plate 110 onto the lifting plate 200. The rising of the lifting plate 200 delivers the mahjong tiles to the table surface of the automatic mahjong machine.

[0062] The tile-raising plate 200 has a tile-raising stroke, a descent stroke, and a first empty stroke. During the tile-raising stroke, the tile-raising plate 200 rises. During the descent stroke, the tile-raising plate 200 descends to its reset position. During the first empty stroke, the tile-raising plate 200 remains stationary. The tile-pushing plate 300 has a tile-pushing stroke, a reset stroke, and a second empty stroke. During the tile-pushing stroke, the tile-pushing plate 300 moves forward to push tiles. During the reset stroke, the tile-pushing plate 300 moves backward to its reset position, making room for the tile-receiving plate 110 to arrange the mahjong tiles. During the second empty stroke, the tile-pushing plate 300 remains stationary. The tile-raising stroke, descent stroke, and first empty stroke are executed sequentially and cyclically, as are the tile-pushing stroke, reset stroke, and second empty stroke. Simultaneously, the first empty stroke overlaps the tile-pushing stroke, and the second empty stroke overlaps the descent stroke.

[0063] When the pusher plate 300 performs its push stroke, it pushes the stacked mahjong tiles on the receiving plate 110 onto the lifting plate 200. At this time, the lifting plate 200 and the receiving plate 110 are at the same height. The lifting plate 200 performs its first empty stroke, which covers the push stroke, thus ensuring that the lifting plate 200 remains stationary during the push stroke and that the pusher mechanism 200 can accurately push the mahjong tiles onto the lifting plate 200. When the pusher plate 300 performs its reset stroke, the lifting plate 200 performs its lifting stroke, sending the mahjong tiles onto the mahjong machine's tabletop. The lifting plate 200 remains at the same height as the tabletop for easy user access. The reset of the pusher plate 300 leaves space on the receiving plate 110 for placing the mahjong tiles, allowing the mahjong machine's tile arrangement mechanism to arrange and stack the mahjong tiles sequentially onto the receiving plate 110. When the pusher plate 300 performs its second empty stroke, the lifter plate 200 performs its lowering stroke, descending to the same height as the support plate 110. The second empty stroke covers the lowering stroke. Firstly, this ensures that the pusher plate 300's reset stroke is completed before the lifter plate 200 descends, preventing the pusher plate 300 from interfering with the mahjong tile stacks being pushed onto the support plate 110 and ensuring that the mahjong tile stacks can be stacked sequentially on the support plate 110. Secondly, it ensures that the lifter plate 200 has descended to its position before the pusher plate 300 performs its subsequent push stroke, preventing the lifter plate 200 from affecting the pusher plate 300's push stroke.

[0064] There is one lifting plate 200 and one pushing plate 300. Two lifting gears 430 drive the lifting plate 200, so that the two sides of the lifting plate 200 are stably stressed and move smoothly. Two pushing gears 440 drive the pushing plate 300, so that the two sides of the pushing plate 300 are stably stressed and run smoothly.

[0065] The number of teeth on the lifting gear 430 is the same as that on the pushing gear 440, ensuring that the rotation cycles of the lifting gear 430 and the pushing gear 440 are consistent when they rotate synchronously (i.e., the lifting gear 430 rotates once, and the pushing gear 440 rotates once as well). As a result, the alternating motion cycles of the lifting plate 200 and the pushing plate 300 are also consistent (i.e., the lifting plate 200 rises and falls once, and the pushing plate 300 moves back and forth once). Thus, the pushing and lifting mechanism can complete the pushing and lifting of mahjong tiles in one operating cycle, reducing the control difficulty of the pushing and lifting mechanism.

[0066] The number of teeth on the drive gear 420 is the same as the number of teeth on the lifting gear 430. In this way, when the motor shaft of the push motor 500 rotates once, it drives the lifting gear 430 and the push gear 440 to rotate once as well. Thus, the operating cycle of the push motor 500 is consistent with the operating cycle of the lifting plate 200 and the push plate 300, thereby reducing the control difficulty of the push motor 500.

[0067] In one embodiment, such as Figures 3 to 7As shown, the drive gear 420, the card-lifting gear 430, and the card-pushing gear 440 have the same number of teeth. The rotation axis of the card-lifting gear 430 is the X-axis, the rotation axis of the card-pushing gear 440 is the Y-axis, and the rotation axis of the drive gear 420 is the Z-axis. The X-axis, Y-axis, and Z-axis are perpendicular to each other. The drive gear 420 is a crown gear, while the card-lifting gear 440 and the card-pushing gear 430 are spur gears. The X-axis intersects the Y-axis.

[0068] The teeth of the crown gear are roughly triangular in shape, and several teeth are arranged radially from the center of the gear to the edge on the end face of the crown gear.

[0069] In this embodiment, the card-lifting gear 430 and the card-pushing gear 440 are located on the same side of the drive gear 420, and the card-lifting gear 430 and the card-pushing gear 440 are respectively meshed with the side and the top of the drive gear 420. Since the card-lifting gear 430 and the card-pushing gear 440 are not meshed, the rotation of the drive gear 420 drives the card-lifting gear 430 and the card-pushing gear 440 to rotate synchronously.

[0070] By using a crown gear and two spur gears, the crown gear meshes with the two spur gears at right angles, enabling the drive gear 420, the lifting gear 430, and the pushing gear 440 to mesh and transmit power when they have the same number of teeth and their rotation axes are perpendicular to each other, thus simplifying the design of the gear set.

[0071] In one embodiment, such as Figure 4 As shown, the X-axis, Y-axis, and Z-axis intersect at a single point.

[0072] With this configuration, the drive gear 420 and the card-lifting gear 430, as well as the drive gear 420 and the card-pushing gear 440, are all orthogonally meshed.

[0073] However, when the three gears mesh, it is necessary to avoid interference between the end face of one of the lifting gear 430 and the tip circle of the other gear. Therefore, a gap must be provided between them. However, due to the existence of assembly tolerance, the gap between them needs to be appropriately enlarged. As a result, the meshing degree between the drive gear 420 and the lifting gear 430, and between the drive gear 420 and the pushing gear 440 may be low, resulting in poor meshing effect.

[0074] To improve the meshing degree between the drive gear 420 and the lifting gear 430, and between the drive gear 420 and the pushing gear 440, in one embodiment, such as Figure 5As shown, the lifting gear 430 and the Y-axis are located on opposite sides of the Z-axis, meaning the vertical distance between the lifting gear 430 and the Y-axis is greater than the vertical distance between the lifting gear 430 and the Z-axis. The vertical distance between the end face of the lifting gear 430 and the Z-axis is L1, and the addendum circle radius of the pushing gear 440 is R1, where L1 > R1. In this embodiment, the end face of the lifting gear 430 refers to the end face on the side closer to the pushing gear 440 and the driving gear 420 in the thickness direction of the lifting gear 430.

[0075] Because the push gear 440 is offset away from the lifting gear 430, the lifting gear 430 and the Y-axis are located on opposite sides of the Z-axis. A certain gap is created between the side of the push gear 440 closest to the lifting gear 430 and the end face of the lifting gear 430. This gap allows the lifting gear 430 to offset a certain distance towards the drive gear 420 along the X-axis without interfering with the push gear 440. The offset of the lifting gear 430 towards the drive gear 420 increases the meshing area between the lifting gear 430 and the drive gear 420, improving their meshing degree. Simultaneously, the gap between the push gear 440 and the lifting gear 430 ensures that the push gear 440 will not interfere with the lifting gear 430 when offset towards the drive gear 420 along the Y-axis. The offset of the push gear 440 towards the drive gear 420 increases the meshing area between the push gear 440 and the drive gear 420, improving their meshing degree.

[0076] The above settings prevent interference between the push gear 440 and the lift gear 430, while increasing the meshing area between the drive gear 420 and the push gear 440 and lift gear 430, thereby improving the meshing degree between the drive gear 420 and the push gear 440 and lift gear 430.

[0077] In this preferred embodiment, such as Figure 5 As shown, the addendum circle radius of the lifting gear is R2, and the vertical distance between the end face of the pushing gear and the X-axis is H1, where R2>H1.

[0078] This configuration allows the lifting gear and the pushing gear to partially overlap in the axial direction of the pushing gear. This overlap reduces the size of the gear set in the height direction, thereby reducing the overall height of the gear set and making it more compact.

[0079] To improve the meshing degree between the drive gear 420 and the lifting gear 430, and between the drive gear 420 and the pushing gear 440, in one embodiment, such as Figure 6As shown, the push gear 440 and the X-axis are located on opposite sides of the Z-axis, meaning the vertical distance between the push gear 440 and the X-axis is greater than the vertical distance between the push gear 440 and the Z-axis. The vertical distance between the end face of the push gear 440 and the Z-axis is L2, and the addendum circle radius of the lifting gear 430 is R2, where L2 > R2. In this embodiment, the end face of the push gear 440 refers to the end face on the side closer to the lifting gear 430 and the drive gear 420 in the thickness direction of the push gear 440.

[0080] Because the lifting gear 430 is offset away from the pushing gear 440, the pushing gear 440 and the X-axis are located on opposite sides of the Z-axis. A certain gap is created between the side of the lifting gear 430 closest to the pushing gear 440 and the end face of the pushing gear 440. This gap allows the pushing gear 440 to offset a certain distance towards the drive gear 420 along the X-axis without interfering with the lifting gear 430. The offset of the pushing gear 440 towards the drive gear 420 increases the meshing area between the pushing gear 440 and the drive gear 420, improving their meshing degree. Simultaneously, the gap between the lifting gear 430 and the pushing gear 440 ensures that the lifting gear 430 can offset towards the drive gear 420 along the Y-axis without interfering with the pushing gear 440. The offset of the lifting gear 430 towards the drive gear 420 increases the meshing area between the lifting gear 430 and the drive gear 420, improving their meshing degree.

[0081] The above settings prevent interference between the push gear 440 and the lift gear 430, while increasing the meshing area between the drive gear 420 and the push gear 440 and lift gear 430, thereby improving the meshing degree between the drive gear 420 and the push gear 440 and lift gear 430.

[0082] In this preferred embodiment, such as Figure 6 As shown, the tip circle radius of the push gear is R1, and the vertical distance between the end face of the lift gear and the Y-axis is H2, where R1>H2.

[0083] This configuration allows the lifting gear and the pushing gear to partially overlap in the axial direction of the lifting gear. This overlap reduces the width of the gear set, thereby reducing the overall width of the gear set and making it more compact.

[0084] To improve the meshing degree between the drive gear 420 and the lifting gear 430, and between the drive gear 420 and the pushing gear 440, in one embodiment, such as Figure 7As shown, the lifting gear 430 and the Y-axis are located on opposite sides of the Z-axis. The vertical distance between the end face of the lifting gear 430 and the Z-axis is L1. The addendum circle radius of the pushing gear 440 is R1, and L1>R1. The pushing gear 440 and the X-axis are located on opposite sides of the Z-axis. The vertical distance between the end face of the pushing gear 440 and the Z-axis is L2. The addendum circle radius of the lifting gear 430 is R2, and L2>R2.

[0085] Because either the push gear 440 or the lift gear 430 is offset in a direction away from the other, there is sufficient clearance between them. This clearance prevents interference when the push gear 440 and the lift gear 430 move a certain distance toward the drive gear 420. Furthermore, the movement of the push gear 440 and the lift gear 430 toward the drive gear 420 increases the meshing area between the push gear 440 and the drive gear 420, and between the lift gear 430 and the drive gear 420, thereby improving the degree of meshing.

[0086] The above settings prevent interference between the push gear 440 and the lift gear 430, while increasing the meshing area between the drive gear 420 and the push gear 440 and lift gear 430, thereby improving the meshing degree between the drive gear 420 and the push gear 440 and lift gear 430.

[0087] In some other embodiments, the drive gear 420 is a spur gear, and one of the lifting gear 430 and the pushing gear 440 is a crown gear and the other is a spur gear. The crown gear meshes with the two spur gears respectively, and the two spur gears do not mesh. This technical solution is a simple variation of the foregoing embodiments and does not depart from the functional and structural principles of this utility model. This technical solution is also within the protection scope of this utility model.

[0088] In one embodiment, such as Figure 8 As shown, the drive gear 420, the lifting gear 430, and the pushing gear 440 have the same number of teeth. The drive gear 420 is a spur gear, while the lifting gear 430 and the pushing gear 440 are crown gears. The rotation axis of the crown gear is the Z-axis, and the rotation axes of the two spur gears are the X-axis and Y-axis, respectively. The X-axis, Y-axis, and Z-axis are perpendicular to each other, and the X-axis intersects the Y-axis.

[0089] 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 top of the drive gear 420, respectively. During gear transmission, since the lifting gear 430 and the pushing gear 440 do not mesh, and the spur gear meshes with the two crown gears, the rotation of the drive gear 420 drives the lifting gear 430 and the pushing gear 440 to rotate synchronously.

[0090] By using a crown gear and two spur gears, the crown gear meshes with the two spur gears at right angles, enabling the drive gear 420, the lifting gear 430, and the pushing gear 440 to mesh and transmit power when they have the same number of teeth and their rotation axes are perpendicular to each other, thus simplifying the design of the gear set.

[0091] In this embodiment, the positional relationship and adjustment method between one spur gear and two crown gears can be obtained by simple transformation with reference to the aforementioned embodiment, and will not be repeated here.

[0092] In some other embodiments, the drive gear 420 is a crown gear, and one of the lifting gear 430 and the pushing gear 440 is a spur gear and the other is a crown gear. The spur gear meshes with the two crown gears respectively, and the two crown gears do not mesh. This technical solution is a simple variation of the foregoing embodiments and does not depart from the functional and structural principles of this utility model. This technical solution is also within the protection scope of this utility model.

[0093] In one embodiment, such as Figure 3 , Figures 9 to 13 As shown, the lifting bracket 100 is provided with a mounting base 110, which has a first end face 111, a second end face 112, and a third end face 113 that are perpendicular to each other. A first connecting seat 114 protrudes from the first end face 111, and a second connecting seat 115 protrudes from the second end face 112. A drive gear 420 rotates parallel to the third end face 113. A lifting gear 430 is rotatably connected to the first connecting seat 114, with one end of the lifting gear 430 abutting against the first end face 111. A pushing gear 440 is rotatably connected to the second connecting seat 115, with one end of the pushing gear 440 abutting against the second end face 112. The edges of the first end face 111, the second end face 112, and the third end face 113 are connected to form a whole.

[0094] In this embodiment, two mounting bases 110 are provided, and the lifting gear 430 and the pushing gear 440 of the two gear sets are respectively mounted on the two mounting bases 110. One of the mounting bases 110 is provided with a pushing motor 500 mounting base 110, and the motor shaft and coupling 510 of the pushing motor 500 extend out of the mounting base 110 to connect to the drive gear 420 or the transmission shaft 410.

[0095] The gear 430 includes a gear body 431 and a first end cover 432. The first end cover 432 includes a first bushing 4321 and a first cover 4322. The first connecting seat 114 is a shaft. The first bushing 4321 is sleeved on the first connecting seat 114. The first cover 4322 is fixedly connected to the first connecting seat 114 by screws. The gear body 431 is sleeved on the first bushing 4321 and is limited by the first cover 4322 to disengage in the direction away from the mounting seat 110. The other end of the gear 430 abuts against the first end face 111, thereby limiting the rotation of the gear 430 on the mounting seat 110.

[0096] The pusher gear 440 includes a pusher gear body 441 and a second end cover 442. The second end cover 442 includes a second bushing 4421 and a second cover body 4422. The second connecting seat 115 is a shaft. The second bushing 4421 is sleeved on the second connecting seat 115. The second cover body 4422 is fixedly connected to the second connecting seat 115 by screws. The pusher gear body 441 is sleeved on the second bushing 4421 and is limited by the second cover body 4422 to prevent it from disengaging in the direction away from the mounting seat 110. The other end of the pusher gear 440 abuts against the second end face 112, thereby limiting the rotation of the pusher gear 440 on the mounting seat 110.

[0097] In some other embodiments, shaft holes may be provided on the lifting gear 430 and the pushing gear 440, and the lifting gear 430 and the pushing gear 440 may be rotatably limited on the first connecting seat 114 and the second connecting seat 115 through the shaft holes.

[0098] With the above settings, the lifting gear 430 and the pushing gear 440 are respectively limited to the mounting base 110, thereby limiting the installation position of the lifting gear 430 and the pushing gear 440. The lifting gear 430 and the pushing gear 440 do not need to be aligned with the drive gear 420 for installation, which reduces the installation difficulty of the lifting gear 430 and the pushing gear 440.

[0099] In this embodiment, the transmission assembly 400 further includes a sliding bearing 450. The drive gear 420 includes a base, and the sliding bearing 450 is mounted on the mounting base 110. The rotation of the base is limited within the sliding bearing 450. By using the sliding bearing 450 mounted on the mounting base 110, the installation position of the drive gear 420 is limited, further simplifying the installation of the transmission assembly 400.

[0100] In one embodiment, such as Figures 9 to 13As shown, the card-raising gear body 431 includes a first tooth portion 4311 and a first annular boss 4312 protruding from one end of the first tooth portion 4311 toward a first end face 111, the first annular boss 4312 abutting against the first end face 111. The card-pushing gear body 441 includes a second tooth portion 4411 and a second annular boss 4412 protruding from one end of the second tooth portion 4411 toward a second end face 112, the second annular boss 4412 abutting against the second end face 112.

[0101] The lifting gear 430 abuts against the first end face 111 via the first annular boss 4312, and the pushing gear 440 abuts against the second end face 112 via the second annular boss 4412, thereby reducing the contact area between the lifting gear 430, the pushing gear 440 and the mounting base 110, and thus reducing the friction between the lifting gear 430, the pushing gear 440 and the mounting base 110.

[0102] In one embodiment, such as Figure 9 , Figure 10 As shown, the pusher bracket 100 includes a plate 120, which is partially recessed to form a receiving groove 130 for receiving the pusher gear 440. The groove wall 131 of the receiving groove 130 is connected to the mounting base 110.

[0103] The automatic mahjong machine's tile feeding mechanism pushes the stacked mahjong tiles onto the tile support plate 120, the tile pushing plate 300 pushes the mahjong tiles on the tile support plate 120 onto the tile lifting plate 200, and the tile lifting plate 200 delivers the mahjong tiles to the table surface of the automatic mahjong machine.

[0104] Before the tile pushing and lifting mechanism performs the tile pushing and delivering procedure, the tile receiving plate 120 needs to support the mahjong tiles. By connecting the groove wall 131 of the receiving groove 130 to the mounting base 110, the strength of the lifting bracket 100 in the receiving groove 130 area can be increased.

[0105] The receiving groove 130 has a notch 132 on its groove wall 131. A portion of the second tooth 4411 of the pusher gear 440 extends out of the notch 132 and meshes with the drive gear 420 or the lifter gear 430. This design minimizes the impact on the strength of the receiving groove 130 by avoiding the meshing position of the pusher gear 440 with the drive gear 420 or the lifter gear 430, ensuring that the card-bearing plate 120 has sufficient supporting strength.

[0106] 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 tile-lifting plate that performs lifting and lowering motion, and a tile-pushing plate that performs reciprocating translational motion, characterized in that, The card-pushing and lifting mechanism also includes a transmission assembly, which comprises two gear sets and a transmission shaft. Each gear set includes a drive gear, a card-lifting gear, and a card-pushing gear. The card-lifting gear drives the card-lifting plate to move, and the card-pushing gear drives the card-pushing plate to move. The drive gears in the same gear set mesh with the card-lifting gear and the card-pushing gear in the same gear set, respectively. The lifting motor is driven by the transmission shaft or any gear in one of the gear sets. The transmission shaft connects two drive gears to make the two gear sets rotate synchronously.

2. The card-pushing and card-raising mechanism as described in claim 1, characterized in that, The drive gear, the card-lifting gear, and the card-pushing gear have the same number of teeth. The rotation axis of the card-lifting gear is the X-axis, the rotation axis of the card-pushing gear is the Y-axis, and the rotation axis of the drive gear is the Z-axis. The X-axis, Y-axis, and Z-axis are perpendicular to each other. The drive gear is a crown gear, and the card-lifting gear and the card-pushing gear are spur gears. The X-axis intersects the Y-axis.

3. The card-pushing and card-raising mechanism as described in claim 2, characterized in that, The X-axis, Y-axis, and Z-axis intersect at a single point.

4. The card-pushing and card-raising mechanism as described in claim 2, characterized in that, The lifting gear and the Y-axis are located on opposite sides of the Z-axis. The vertical distance between the end face of the lifting gear and the Y-axis is L1, and the addendum circle radius of the pushing gear is R1, where L1>R1.

5. The card-pushing and card-raising mechanism as described in claim 4, characterized in that, The tooth tip circle radius of the lifting gear is R2, and the vertical distance between the end face of the pushing gear and the X-axis is H1, where R2>H1.

6. The card-pushing and card-raising mechanism as described in claim 2, characterized in that, The pusher gear and the X-axis are located on opposite sides of the Z-axis. The vertical distance between the end face of the pusher gear and the X-axis is L2, and the addendum circle radius of the pusher gear is R2, where L2>R2.

7. The card-pushing and card-raising mechanism as described in claim 6, characterized in that, The tooth tip circle radius of the pusher gear is R1, and the vertical distance between the end face of the lifter gear and the Y-axis is H2, where R1>H2.

8. The card-pushing and card-raising mechanism as described in claim 2, characterized in that, The card-lifting gear and the Y-axis are located on opposite sides of the Z-axis. The vertical distance between the end face of the card-lifting gear and the Y-axis is L1. The tooth tip circle radius of the card-pushing gear is R1, and L1>R1. The card-pushing gear and the X-axis are located on opposite sides of the Z-axis. The vertical distance between the end face of the card-pushing gear and the X-axis is L2. The tooth tip circle radius of the card-lifting gear is R2, and L2>R2.

9. The card-pushing and card-raising mechanism as described in claim 1, characterized in that, The drive gear, the card-lifting gear, and the card-pushing gear have the same number of teeth. The rotation axis of the card-lifting gear is the X-axis, the rotation axis of the card-pushing gear is the Y-axis, and the rotation axis of the drive gear is the Z-axis. The X-axis, Y-axis, and Z-axis are perpendicular to each other. The drive gear is a spur gear, and the card-lifting gear and the card-pushing gear are crown gears. The X-axis intersects the Y-axis.

10. The card-pushing and card-raising mechanism as described in claim 1, characterized in that, It also includes a lifting bracket, which is provided with a mounting base. The mounting base has a first end face, a second end face, and a third end face that are perpendicular to each other. A first connecting seat is protruding on the first end face, and a second connecting seat is protruding on the second end face. The lifting gear is limited to rotation at the first connecting seat, and one end of the lifting gear abuts against the first end face. The pushing gear is limited to rotation at the second connecting seat, and one end of the pushing gear abuts against the second end face. The driving gear rotates parallel to the third end face.

11. The card-pushing and card-raising mechanism as described in claim 10, characterized in that, The lifting bracket includes a plate, which is partially recessed to form a receiving groove for receiving the pushing gear, and the groove wall is connected to the mounting base.

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