Mahjong machine with rotatable tile scraper

Abstract

The application relates to the mahjong machine technical field, and particularly discloses a mahjong machine with a rotatable tile scraper, which at least comprises a tile scraper, a limiting mechanism and a central lifting mechanism, the tile scraper comprises a tile scraping seat, a scraping arm and a sleeve, the sleeve is provided with a first clamping groove extending radially outward from the inner wall of the sleeve; the limiting mechanism at least comprises a limiting block and an elastic piece, the elastic piece has elastic potential energy for driving the limiting block to enter the first clamping groove or separate from the first clamping groove; and the central lifting mechanism is provided with a driving part for driving the limiting block to separate from the first clamping groove. In the embodiment, when the limiting block is located in the first clamping groove, the state of the tile scraper is limited, and the tile scraper is in a static state; when the limiting block separates from the first clamping groove, the tile scraper can rotate in the same direction with the tile washing large disc. The embodiment controls the state of the tile scraper through the radial movement of the limiting block, and has the technical advantages of simple structure, low cost and reliable control.

Description

Technical Field

[0001] This invention relates to the field of mahjong machine technology, and more specifically to a mahjong machine with a rotatable tile scraper. Background Technology

[0002] In existing mahjong machines, the card scraper is usually fixed, while the shuffling tray rotates during shuffling. The scraper arm of the card scraper blocks and guides the mahjong tiles on the shuffling tray, thereby causing the mahjong tiles on the shuffling tray to move upwards towards the tile opening.

[0003] The drawback of the aforementioned fixed card scraper is that the accumulation of mahjong tiles at the tile-attaching opening results in low tile-attaching efficiency and generates significant noise. To address this, the applicant has designed a mahjong machine where the card scraper rotates in the same direction as the shuffling disc, thus slowing down the speed at which the mahjong machine moves towards the tile-attaching opening to overcome the technical shortcomings of the fixed card scraper. The key to this design lies in how to control the rotation and stopping of the card scraper through a simple and reliable limiting mechanism. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a mahjong machine with a rotatable card scraper, which achieves control of the card scraper through a simple and reliable limiting mechanism.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a mahjong machine with a rotatable card scraper, comprising at least:

[0006] A card scraper, comprising a card scraper base, a plurality of scraper arms disposed on the outer periphery of the card scraper base, and a sleeve disposed on the inner side of the card scraper base, wherein the sleeve is provided with a first slot extending radially outward from the inner wall of the sleeve.

[0007] A limiting mechanism, comprising at least a limiting block for adapting to the first card slot and an elastic element, the elastic element having elastic potential energy to drive the limiting block into or out of the first card slot; and

[0008] A central lifting mechanism is provided with a driving part for driving the limiting block to separate from the first slot.

[0009] In a preferred embodiment, the limiting mechanism includes at least a limiting seat and a slider slidably connected to the limiting seat, the limiting block is disposed on the slider, and a guide mechanism is provided between the slider and the limiting seat.

[0010] In a preferred embodiment, the guiding mechanism includes a guide rail and a guide groove that match each other, the guide rail and the guide groove being respectively disposed on the slider and the limiting seat.

[0011] In a preferred embodiment, the central lifting mechanism includes at least a fixedly mounted lifting seat, a vertical cam located within the lifting seat, and a drive motor for driving the vertical cam to rotate. The limiting seat is fixedly connected to the lifting seat. The vertical cam is provided with an annular platform for contacting and engaging with the side of the slider away from the limiting block. The elastic element is located on the side of the slider away from the annular platform and is configured to have elastic potential energy to drive the limiting block to separate from the first slot. The driving part is a recess provided on the annular platform.

[0012] In a preferred embodiment, the central lifting mechanism includes at least a fixed lifting seat, a lifting rod vertically movably connected to the lifting seat, and a support seat located at the lower end of the lifting rod. The elastic element is located between the slider and the lifting seat and is configured to have elastic potential energy to drive the limiting block into the first slot. The bottom of the slider, away from the limiting block, is provided with a downwardly extending guide portion. The support seat is provided with a traction portion for cooperating with the guide portion.

[0013] In a preferred embodiment, the limiting mechanism includes a connecting rod, the limiting block is located at one end of the connecting rod, the other end of the connecting rod is an elastic element connection end, one end of the elastic element is connected to the elastic element and configured to have elastic potential energy to drive the limiting block into the first slot, and a hinge portion is provided between the limiting block and the elastic element connection end.

[0014] In a preferred embodiment, the elastic element connection end is provided with a spring receiving groove, and a force guiding part is provided on the side of the elastic element connection end away from the spring receiving groove.

[0015] In a preferred embodiment, the central lifting mechanism includes at least a fixedly mounted lifting seat, the connecting rod is hinged to the lifting seat via the hinge portion, and the lifting seat is provided with a second slot for accommodating the limiting block.

[0016] In a preferred embodiment, the central lifting mechanism further includes a vertical cam located within the lifting seat and a drive motor for driving the vertical cam to rotate. The driving part is a pressing protrusion disposed on the outside of the vertical cam and used to cooperate with the force-receiving guide part.

[0017] In a preferred embodiment, the central lifting mechanism further includes a lifting rod vertically and movably connected to the lifting seat and a support seat disposed at the lower end of the lifting rod, wherein the driving part is a pressing part disposed on the support seat for cooperating with the force-guiding part.

[0018] This embodiment features a mahjong machine with a rotatable card scraper. The limiting mechanism includes a limiting block and an elastic element. The elastic element has elastic potential energy to drive the limiting block into or out of the first slot. The first slot extends radially. When the limiting block is located in the first slot, the card scraper is restricted and remains stationary, unable to rotate. When the limiting block separates from the first slot, the card scraper can rotate in the same direction as the shuffling plate. This embodiment controls the state of the card scraper through the radial movement of the limiting block, offering advantages such as simple structure, low cost, and reliable control. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection structure between the central lifting mechanism and the shuffling tray in the mahjong machine with a rotatable card scraper described in Embodiments 1 and 2.

[0020] Figure 2 for Figure 1 A schematic diagram of the structure shown from below.

[0021] Figure 3 This is a schematic diagram of the exploded state structure of the central lifting mechanism and the shuffling plate shown in Example 1.

[0022] Figure 4 This is a three-dimensional structural diagram of the central lifting mechanism in Embodiment 1;

[0023] Figure 5 This is a schematic diagram of the exploded state structure of the central lifting mechanism in Embodiment 1;

[0024] Figure 6 This is a front view of the central lifting mechanism in Embodiment 1, wherein the dice disk is located at the high position;

[0025] Figure 7 for Figure 6 A cross-sectional view of the central lifting mechanism shown.

[0026] Figure 8 This is a front view of the central lifting mechanism in Embodiment 1, wherein the dice disk is located at the lower position;

[0027] Figure 9 for Figure 8 A cross-sectional view of the central lifting mechanism shown.

[0028] Figure 10 This is a schematic diagram of the lifting seat in Embodiment 1;

[0029] Figure 11 This is a schematic diagram of the lifting rod structure in Example 1;

[0030] Figure 12 This is a schematic diagram of the vertical cam in Example 1;

[0031] Figure 13 This is a connection diagram of the second transmission mechanism in Embodiment 1;

[0032] Figure 14 This is a schematic diagram of the motion separation mechanism in Embodiment 1, wherein the limiting block is disengaged from the first slot;

[0033] Figure 15 This is a schematic diagram of the motion separation mechanism in Embodiment 1, wherein the limiting block and the first slot are in a mating state;

[0034] Figure 16 This is a schematic diagram showing the connection between the motion separation mechanism, the vertical cam, and the lifting seat in Embodiment 1;

[0035] Figure 17 This is a schematic diagram of the shuffling disk structure in Example 1;

[0036] Figure 18 This is a top-view three-dimensional structural diagram of the card scratcher in Embodiment 1;

[0037] Figure 19 This is a three-dimensional structural diagram of the card scratcher in the upward view of Embodiment 1;

[0038] Figure 20 This is a schematic diagram of the connecting rod and locking spring of the motion separation mechanism in Example 1;

[0039] Figure 21 This is a schematic diagram showing the connection between the first transmission mechanism and the second transmission mechanism in Embodiment 1;

[0040] Figure 22 for Figure 21 The diagram shows the structure in the explosion state.

[0041] Figure 23 for Figure 21 The diagram shows a cross-sectional view of the structure.

[0042] Figure 24 This is a schematic diagram of the lifting seat and limiting mechanism in the mahjong machine with a rotatable card scraper described in Embodiment 2;

[0043] Figure 25 This is a schematic diagram of the limiting mechanism and the vertical cam in Embodiment 2;

[0044] Figure 26 This is a schematic diagram of the limiting mechanism in Embodiment 2;

[0045] Figure 27 This is a schematic diagram of the explosive state structure of the limiting mechanism in Embodiment 2;

[0046] Figure 28 This is a schematic diagram of the connection structure between the central lifting mechanism and the shuffling tray in the mahjong machine with a rotatable card scraper described in Embodiment 3;

[0047] Figure 29 for Figure 28 The diagram shows the exploded state structure of the central lifting mechanism and the shuffling plate.

[0048] Figure 30 for Figure 28 The diagram shows the structure behind the hidden shuffling disk and the card scraper, wherein the limiting block is in a limiting state that is adapted to the first card slot;

[0049] Figure 31 for Figure 28 The diagram shows the structure behind the hidden shuffling disk and the card scraper, wherein the limiting block is in a non-limiting state, disengaged from the first slot;

[0050] Figure 32 This is a schematic diagram of the central lifting mechanism in Embodiment 3, in which the dice disk is in a high position;

[0051] Figure 33 This is a schematic diagram of the central lifting mechanism in Embodiment 3, in which the dice disk is in a low position;

[0052] Figure 34 This is a schematic diagram of the motor base and lifting base in Embodiment 3;

[0053] Figure 35 This is a schematic diagram of the card scratcher in Example 3;

[0054] Figure 36 This is a schematic diagram of the connecting rod in Example 3;

[0055] Figure 37 This is a partial cross-sectional view of the limiting mechanism and the central lifting mechanism in the mahjong machine with a rotatable card scraper shown in Embodiment 4.

[0056] Figure 38 for Figure 37 Top view of the structure shown;

[0057] Figure 39 This is a schematic diagram of the limiting mechanism and lifting seat in Embodiment 4;

[0058] Figure 40 This is a schematic diagram of the limiting mechanism in Example 4;

[0059] Figure 41 This is a cross-sectional structural diagram of the limiting mechanism in Embodiment 4;

[0060] Figure 42This is a schematic diagram of the explosion state structure of the limiting mechanism in Example 4. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0062] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", 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 invention 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 invention.

[0063] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0064] Example 1

[0065] like Figure 1-3 As shown, a mahjong machine with a rotatable card scraper according to this embodiment includes a central lifting mechanism, a shuffling tray 70, and a card scraper 80.

[0066] In this embodiment, the central lifting mechanism is as follows: Figures 4-10 As shown, the system includes a lifting base 10, a lifting rod 20, a dice disk 40, and a drive motor 30. The lifting base 10 is fixedly installed and connected to the frame of the mahjong machine and the motor base 37. The lifting rod 20 is located inside the lifting base 10 and is axially movable to the lifting base 10, allowing it to move vertically relative to the lifting base 10. The dice disk 40 is fixedly connected to the upper end of the lifting rod 20.

[0067] In this embodiment, a guide mechanism is provided between the lifting rod 20 and the lifting seat 10. A preferred embodiment is as follows... Figure 10 , Figure 11 As shown, the guiding mechanism includes a pair of opposing guide ribs 22 disposed on the outer wall of the lifting rod and a guide groove 11 disposed on the inner wall of the lifting seat 10 and adapted to the guide ribs 22. The guide mechanism ensures the lifting accuracy of the lifting rod.

[0068] As a preferred embodiment, in this case, Figure 11 As shown, the guide rib 22 has a through groove 23 inside. The purpose of the through groove 23 is to reduce weight, save raw materials, and reduce costs.

[0069] In this embodiment, the drive motor 30 is vertically arranged, and its output shaft 31 is coaxially arranged with the lifting rod 20 and located below the lifting rod 20. With this arrangement, the projections of the drive motor 30 and the lifting rod 20 coincide, and the space occupied by the central lifting mechanism is smaller in its projection direction, resulting in higher space utilization, a more compact structure, and a smaller size for the mahjong machine.

[0070] In this embodiment, a vertical cam 50 for transmitting driving force is provided between the drive motor 30 and the lifting rod 20, such as... Figure 12 As shown, the lower end of the vertical cam 50 is provided with a connecting part 52 for coaxially and fixedly connected to the output shaft 31 of the drive motor 30, and the upper end face of the vertical cam 50 is provided with a cam trajectory surface 51 with varying height along the circumferential direction. Correspondingly, as... Figure 11 As shown, the inner wall of the lifting rod 20 is provided with a support portion 21 for contacting and engaging with the cam trajectory surface 51.

[0071] In this embodiment, the vertical cam 50 and the support portion 21 constitute the first transmission mechanism between the drive motor 30 and the lifting rod 20. Its working principle is as follows: the drive motor 30 drives the vertical cam 50 to rotate. During the rotation of the vertical cam 50, the height of the contact point between the cam trajectory surface 51 and the support portion 21 changes, thereby achieving the lifting and lowering of the lifting rod. As a power transmission component, the vertical cam 50 results in a smaller overturning moment on the lifting rod and lower power consumption, allowing the drive motor to use a smaller motor. This not only reduces motor cost but also reduces the space occupied by the drive motor.

[0072] Preferably, in this embodiment, the orthographic projection of the cam trajectory surface 51 is annular. Compared with a solid structure, this arrangement makes the vertical cam lighter, uses less raw materials, and has a lower cost.

[0073] When the mahjong machine is in normal working condition, the central lifting mechanism is as follows: Figure 8 , Figure 9 As shown, the dice pan is in its lowest position, flush with the mahjong machine tabletop. At this time, the support 21 is in contact with the lowest position of the cam track surface 51. When a game ends and shuffling is needed, the drive motor starts, driving the vertical cam to rotate, changing the contact position between the support 21 and the cam track surface 51 from the lowest position to... Figure 6 , Figure 7At the highest position shown, the mahjong tiles on the table can be pushed into the mahjong machine for shuffling. After all the mahjong tiles on the table are pushed in, the drive motor is restarted. During the rotation of the vertical cam, the lifting rod and dice plate descend under the action of gravity, keeping the support part 21 in contact with the cam trajectory surface 51 until... Figure 8 , Figure 9 The state shown.

[0074] In this embodiment, to make the descent of the dice pan and the lifting rod more reliable, a spring 60 is provided between the lifting seat 10 and the lifting rod 20. This spring 60 is configured to be in an energy-storing state when the lifting rod 20 is in a high position. Thus, during the descent of the dice pan, gravity and the restoring potential energy of the spring work together to ensure the reliability of the descent.

[0075] Of course, spring 60 can be set to either a compressed state or a stretched state for energy storage.

[0076] Preferably, in this embodiment, the energy storage state of the spring 60 is a compressed state. The specific connection method is as follows: Figure 9 , Figure 10 As shown, the inner wall of the lifting seat 10 is provided with a spring receiving cavity 12. The upper end of the spring receiving cavity 12 is provided with a limiting cavity bottom 13. The lower end of the spring receiving cavity 12 is open, and an opening is provided on the side facing the lifting rod radially. The width of the opening is set such that the spring 60 can only enter and exit from the lower opening and cannot enter and exit from the opening side.

[0077] Correspondingly, such as Figure 9 , Figure 11 As shown, the lower end of the lifting rod 20 is provided with a lug 24 that is adapted to the spring receiving cavity. The spring 60 is located between the lug 24 and the bottom 13 of the limiting cavity. During the lifting rod's ascent, the spring is compressed to store energy. When the stored energy of the spring is released, the lifting rod can be driven to descend through the lug 24.

[0078] Preferably, in order to ensure balanced force distribution, the spring receiving cavity, the spring, and the lugs are all arranged in pairs.

[0079] In this embodiment, the shuffling disc 70 and the lifting mechanism share the same drive motor 30. For example... Figure 17 As shown, the bottom of the shuffling disk 70 in this embodiment is provided with an internal toothed ring 71.

[0080] In this embodiment, a second transmission mechanism is provided between the drive motor 30 and the shuffling disc 70. Preferably, this second transmission mechanism is as follows: Figure 13 , Figure 21 and Figure 22As shown, it includes a drive gear 32 connected to the output shaft 31 of the drive motor 30, driven gears 33 located on both sides of the drive gear 32 and meshing with the drive gear 32 respectively, and an internal gear ring 71, wherein the driven gear 33 meshes with the internal gear ring 71.

[0081] In this embodiment, two driven gears 33 are provided to make the shuffling disk more evenly stressed. Of course, one or more driven gears can also achieve the same function.

[0082] In this embodiment, in order to enable a single drive motor 30 to simultaneously serve as the power source for both the shuffling disc 70 and the lifting mechanism, such as... Figure 3 , Figure 22 and Figure 23 As shown, a first one-way transmission member 35 and a second one-way transmission member 36 are arranged side by side on the output shaft 31 of the drive motor 30, wherein the power transmission direction of the second one-way transmission member 36 is opposite to that of the first one-way transmission member 35.

[0083] It should be noted that the first one-way transmission member 35 and the second one-way transmission member 36 in this embodiment adopt one-way bearings or ratchet mechanisms in the prior art, which will not be described in detail here.

[0084] The first one-way transmission component 35 is located between the output shaft 31 and the vertical cam 50, and the second one-way transmission component 36 is located between the output shaft 31 and the drive gear 32, so that only one of the shuffling plate and the central lifting mechanism is working during the rotation of the drive motor 30 in one direction.

[0085] This embodiment also includes a scratcher 80, such as Figure 18 , Figure 19 As shown, the card scraper 80 includes a card scraper base 81 and a scraper arm 82 disposed on the outer periphery of the card scraper base 81. A sleeve 85 is provided on the inner side of the card scraper base 81 and sleeved on the outer side of the lifting seat. The card scraper 80 is rotatably connected to the lifting seat.

[0086] In this embodiment, the card scraper 80 is configured to be rotatable. Specifically, a third transmission mechanism is provided between the card scraper 80 and the shuffling disk 70. The third transmission mechanism includes a drive gear 34 coaxially connected to the drive gear 32 and a transmission gear / gear ring meshing with the drive gear 34. The transmission gear / gear ring is disposed on the card scraper holder 81.

[0087] Preferably, in this embodiment, the scratch card holder 81 is provided with a transmission gear ring 83 for engaging with the drive gear 34.

[0088] In this embodiment, since the rotation of the card scraper 80 is not continuous during the shuffling process, it usually stops rotating after one revolution. Therefore, a clearance position 84 is provided on the transmission gear ring 83 in this embodiment. When the drive gear 34 moves to the clearance position 84, it disengages from the transmission gear ring 83.

[0089] In this embodiment, in order to control the start and stop of the rotation of the card scratcher 80, a limiting mechanism is specially provided between the card scratcher 80 and the lifting seat 10.

[0090] As an improvement of this embodiment, the limiting mechanism includes a connecting rod 90 and an elastic element, wherein the elastic element is a locking spring 91.

[0091] The sleeve 85 is provided with a first slot 86, and the lifting seat 10 is provided with a second slot 14 whose position corresponds to the first slot. The height position of the second slot 14 is the same as that of the first slot 86.

[0092] In this embodiment, a hinge portion 92 is provided in the middle of the connecting rod 90. This hinge portion is preferably hinged to the lifting seat. Preferably, in this embodiment, the hinge portion is a hinge hole, and the corresponding lifting seat is provided with a hinge shaft corresponding to the hinge hole. One end of the connecting rod 90 is provided with a limiting block 93 for fitting with the first and second slots. The other end of the connecting rod 90 is provided with a spring receiving groove 94, in which a locking spring 91 is installed. The free end of the locking spring 91 is connected to the inner wall of the lifting seat.

[0093] In this configuration, the limiting block 93 is adapted to the first slot 86 and the second slot 14, and the drive gear 34 is located in the clearance position 84 of the transmission gear ring 83.

[0094] As a preferred option, such as Figure 20 As shown, a force-receiving guide portion 95 is provided on the side of the elastic element connection end away from the spring receiving groove 94, and a pressing protrusion 53 corresponding to the force-receiving guide portion 95 is provided on the outer wall of the vertical cam 50. The pressing protrusion 53 is the driving part used in this embodiment to drive the limiting block to separate from the first slot.

[0095] The limiting mechanism used to control the rotation of the card scratcher in this embodiment has the technical advantages of simple structure, low cost and reliable control.

[0096] This embodiment describes a method for shuffling mahjong tiles using a mahjong machine with a rotatable tile scraper, including the following steps:

[0097] S10: Start the drive motor 30. The drive motor drives the dice disk to rise from the low position to the high position through the first one-way transmission component and the first transmission mechanism. When the dice disk is in the high position, the pressing protrusion acts on the end of the connecting rod where the locking spring is provided, causing the limiting block to disengage from the first locking groove.

[0098] S20: The drive motor rotates in the opposite direction to S10. The drive motor drives the shuffling disc to rotate through the second one-way transmission and the second transmission mechanism. The shuffling disc drives the scraper to rotate in the same direction by a certain angle through the friction between it and the scraper arm. The positions of the first slot and the second slot are staggered. The transmission gear ring rotates to mesh with the drive gear. After that, the limiting block contacts the inner wall of the sleeve under the action of elastic force.

[0099] S30: The drive motor rotates in the opposite direction to S20, and the drive motor drives the dice disk to descend from the high position to the low position through the first one-way transmission component and the first transmission mechanism.

[0100] S40: The drive motor rotates in the opposite direction to S30. The drive motor drives the shuffling disk to rotate through the second one-way transmission and the second transmission mechanism. The shuffling disk drives the card scraper to rotate through the third transmission mechanism. The card scraper rotates in the same direction as the shuffling disk. The card scraper rotates at a speed less than that of the shuffling disk.

[0101] S50: When the card scraper rotates one revolution until the position of the limiting block corresponds to the position of the first slot, the limiting block is driven into the first sliding groove under the action of elastic force, the card scraper stops rotating, and the drive gear disengages from the transmission gear ring through the clearance position; the shuffling disc continues to rotate until the shuffling is completed.

[0102] In the initial stage of the shuffling process described above, the scraper arm of the scraper rotates in the same direction as the shuffling disc, but at a lower speed. This relative speed difference creates some resistance to the mahjong tiles, preventing and guiding them to slide to the bottom. However, the resistance is relatively small during this process, resulting in less deformation of the scraper arm and less torque on the drive motor of the shuffling disc. This saves costs and extends the service life. Since there is no accumulation at the tile loading point, the resistance to the free end of the scraper arm is small, and the deformation of the free end of the scraper arm is also small. Consequently, the noise generated during rotation is significantly reduced.

[0103] Example 2

[0104] This embodiment of a mahjong machine with a rotatable card scraper has the same structure as that of Embodiment 1, including the central lifting mechanism, the card scraper, and the shuffling tray. The key difference between this embodiment and Embodiment 1 lies in the limiting mechanism used to restrict the rotation of the card scraper.

[0105] As a special feature of this embodiment, such as Figures 24-27As shown, the limiting mechanism includes a limiting seat 17 and a slider 171 slidably connected to the limiting seat 17. The limiting seat 17 is fixedly connected to the lifting seat 10, and a receiving cavity 18 is provided inside the limiting seat 17. An elastic element 91, which is a compression spring, is installed in the receiving cavity 18 between the slider 171 and the bottom of the receiving cavity. The compression spring has elastic potential energy to drive the limiting block to separate from the first slot.

[0106] As a preferred option, such as Figure 27 As shown, the slider 171 is provided with a spring receiving cavity 173 for accommodating the elastic element.

[0107] In this embodiment, a guide mechanism is provided between the slider 171 and the limiting seat 17. Preferably, in this embodiment, the sliding guide mechanism includes a pair of guide rails 172 located on the outside of the slider 171 and a guide groove 181 located in the receiving cavity 18 and adapted to the guide rails 172.

[0108] In this embodiment, the limiting block 93 is located on the upper end of the slider 171 facing the sleeve 85. The vertical cam 50 is provided with an annular platform 54 that contacts and cooperates with the side of the slider away from the limiting block. The annular platform 54 is provided with a recess 55, which is the driving part used in this embodiment to drive the limiting block to separate from the first slot.

[0109] This embodiment describes a method for shuffling mahjong tiles using a mahjong machine with a rotatable tile scraper, including the following steps:

[0110] S10: Start the drive motor 30. The drive motor drives the dice disk to rise from the low position to the high position through the first one-way transmission component and the first transmission mechanism. When the dice disk is in the high position, the concave part 55 rotates to the position where the slider 171 is located. Under the action of the compression spring, the slider moves to contact the concave part 55, that is, the limiting block disengages from the first slot.

[0111] S20: The drive motor rotates in the opposite direction to S10. The drive motor drives the shuffling disc to rotate through the second one-way transmission and the second transmission mechanism. The shuffling disc drives the scraper to rotate in the same direction by a certain angle through the friction between it and the scraper arm. The positions of the first slot and the second slot are staggered. The transmission gear ring rotates to mesh with the drive gear.

[0112] S30: The drive motor rotates in the opposite direction to S20. The drive motor drives the dice disk to descend from the high position to the low position through the first one-way transmission component and the first transmission mechanism. During this process, under the action of the ring platform, the end of the limiting block contacts the inner wall of the sleeve.

[0113] S40: The drive motor rotates in the opposite direction to S30. The drive motor drives the shuffling disk to rotate through the second one-way transmission and the second transmission mechanism. The shuffling disk drives the card scraper to rotate through the third transmission mechanism. The card scraper rotates in the same direction as the shuffling disk. The card scraper rotates at a speed less than that of the shuffling disk.

[0114] S50: When the card scraper rotates one revolution until the position of the limiting block corresponds to the position of the first slot, the limiting block is driven into the first sliding groove under the action of the ring platform, the card scraper stops rotating, and the drive gear disengages from the transmission gear ring through the clearance position; the shuffling disc continues to rotate until the shuffling is completed.

[0115] Example 3

[0116] This embodiment describes a mahjong machine with a rotatable tile scraper, such as... Figures 28-29 As shown, it includes a central lifting mechanism, a shuffling plate 70, and a card scraper 80. The difference between this embodiment and Embodiment 1 is that the central lifting mechanism is different.

[0117] In this embodiment, the central lifting mechanism is as follows: Figures 32-34 As shown, the assembly includes a lifting base 10, a lifting rod 20, a dice disk 40, a swing arm 38, and a central lifting motor 301. The lifting base 10 is fixedly installed and is integrally formed with the motor base 37. The swing arm 38 has a motor connection end 381 for fixed connection to the output shaft of the central lifting motor 301. The other end of the swing arm 38 has a support end 382, ​​which can be a cylinder or a rolling element, such as a bearing.

[0118] In this embodiment, the lifting rod 20 is located inside the lifting seat 10 and is axially movably connected to the lifting seat 10, allowing it to rise and fall vertically relative to the lifting seat 10. The dice disk 40 is fixedly connected to the upper end of the lifting rod 20, and a support seat 25 is provided at the lower end of the lifting rod 20. The support end 382 of the swing rod 38 contacts and engages with the bottom end of the support seat 25. During the rotation of the central lifting motor, the swing rod is driven to swing, thereby driving the lifting rod and the dice disk to rise and fall.

[0119] In this embodiment, the shuffling disk 70 and the central lifting mechanism are driven independently. For example, Figure 28 , Figure 29 As shown, two shuffling motors 302 are provided. The output shafts of the shuffling motors 302 are respectively connected to drive gears 32. The two drive gears 32 mesh with the internal gear rings 71 of the shuffling disk to drive the shuffling disk to rotate.

[0120] In this embodiment, the structure of the scratch card device 80 is as follows: Figure 35As shown, it includes a card-scraping base 81 and a scraper arm 82 disposed on the outer periphery of the card-scraping base 81. A sleeve 85 is provided on the inner side of the card-scraping base 81 and sleeved on the outer side of the lifting base. The card-scraping device 80 is rotatably connected to the lifting base.

[0121] In this embodiment, the card scraper 80 is configured to be rotatable. Specifically, a third transmission mechanism is provided between the card scraper 80 and the shuffling disk 70. The third transmission mechanism includes a drive gear 34 coaxially connected to one of the drive gears 32 and a transmission gear / gear ring meshing with the drive gear 34. The transmission gear / gear ring is disposed on the card scraper holder 81.

[0122] Preferably, in this embodiment, the scratch card holder 81 is provided with a transmission gear ring 83 for engaging with the drive gear 34.

[0123] In this embodiment, since the rotation of the card scraper 80 is not continuous during the shuffling process, it usually stops rotating after one revolution. Therefore, a clearance position 84 is provided on the transmission gear ring 83 in this embodiment. When the drive gear 34 moves to the clearance position 84, it disengages from the transmission gear ring 83.

[0124] In this embodiment, to control the start and stop of the rotation of the card scraper 80, a limiting mechanism is specifically provided between the card scraper 80 and the lifting seat 10. This limiting mechanism includes a connecting rod 90 and an elastic element, wherein the elastic element is a locking spring 91. Figure 34 As shown, the lifting seat is provided with a connecting rod mounting cavity 15 for mounting the connecting rod 90. The connecting rod mounting cavity is provided with a hinge hole 16 inside, and a radially through second slot 14 is provided on one side of the connecting rod mounting cavity.

[0125] In this embodiment, the sleeve 85 is provided with a first slot 86. The difference between this embodiment and Embodiment 1 is that the first slot 86 has an outward protrusion and does not directly penetrate the sleeve wall. In this embodiment, the height of the second slot 14 is the same as that of the first slot 86.

[0126] In this embodiment, the connecting rod 90 is as follows: Figure 36 As shown, a hinge portion 92 is provided in the middle, which is preferably hinged to the lifting seat. Preferably, in this embodiment, the hinge portion is a hinge shaft, which is hinged to the hinge hole 16 on the lifting seat. One end of the connecting rod 90 is provided with a limiting block 93 for matching the first and second slots, and the other end of the connecting rod 90 is provided with a spring receiving groove 94. A locking spring 91 is installed in the spring receiving groove 94, and the free end of the locking spring 91 is connected to the inner wall of the lifting seat.

[0127] In this configuration, the limiting block 93 is adapted to the first slot 86 and the second slot 14, and the drive gear 34 is located in the clearance position 84 of the transmission gear ring 83.

[0128] As a preferred option, such as Figure 36 As shown, a force-guiding part 95 is provided on the side of the elastic element connection end away from the spring receiving groove 94, correspondingly, as... Figure 32 , Figure 33 As shown, the support base 25 is provided with a pressing part 26 for cooperating with the force-guiding part 95. The pressing part 26 is a driving part for driving the limiting block to separate from the first slot.

[0129] This embodiment describes a method for shuffling mahjong tiles using a mahjong machine with a rotatable tile scraper, including the following steps:

[0130] S10: Start the lifting motor 301 to drive the dice disk to rise from the low position to the high position. When the dice disk is in the high position, the pressing part 26 acts on the force guide part 95 of the connecting rod, causing the limiting block to disengage from the first slot, as shown in the state. Figure 27 As shown, the scratcher can rotate in this state;

[0131] S20: The large disc motor 302 starts, driving the large disc to rotate. The large disc, through friction with the scraper arm, causes the scraper to rotate in the same direction at a certain angle. The positions of the first and second slots then intersect, and the transmission gear ring rotates to mesh with the drive gear. After that, the limiting block contacts the inner wall of the sleeve under the action of elastic force. The large disc drives the scraper to rotate through the third transmission mechanism. The direction of rotation of the scraper is the same as that of the large disc, and the rotation speed of the scraper is less than that of the large disc.

[0132] S30: Lifting motor 301 drives the dice disc to descend from a high position to a low position;

[0133] S40: When the card scraper rotates one revolution until the position of the limiting block corresponds to the position of the first slot, the limiting block is driven into the first sliding groove under the action of elastic force, the card scraper stops rotating, and the drive gear disengages from the transmission gear ring through the clearance position; the shuffling disc continues to rotate until the shuffling is completed.

[0134] Example 4

[0135] The difference between this embodiment and Embodiment 3 is that the limiting mechanism is different in Embodiment 3.

[0136] Specifically, such as Figures 37-42As shown, the limiting mechanism includes a limiting seat 17 and a slider 171 slidably connected to the limiting seat 17. The limiting seat 17 is fixedly connected to the lifting seat 10, and a receiving cavity 18 is provided inside the limiting seat 17. An elastic element 91, which is a compression spring, is installed in the receiving cavity 18 between the slider 171 and the bottom of the receiving cavity. The compression spring has elastic potential energy to drive the limiting block into the first slot.

[0137] As a preferred option, such as Figure 42 As shown, the slider 171 is provided with a spring receiving cavity 173 for accommodating the elastic element.

[0138] In this embodiment, a guide mechanism is provided between the slider 171 and the limiting seat 17. Preferably, in this embodiment, the sliding guide mechanism includes a pair of guide rails 172 located on the outside of the slider 171 and a guide groove 181 located in the receiving cavity 18 and adapted to the guide rails 172.

[0139] In this embodiment, a guide portion 96 is provided at the bottom of the slider 171, and correspondingly, a traction portion 27 is provided at the upper part of the support base 25 for cooperating with the guide portion 96. The traction portion 27 is a driving portion used in this embodiment to drive the limiting block to separate from the first slot.

[0140] Preferably, the traction part 27 and the guide part 96 are respectively provided with mutually cooperating inclined surfaces.

[0141] In this embodiment, initially, the limiting block 93 is located in the first slot 86 of the scratcher, used to restrict the rotation of the scratcher. After the dice disk of the central lifting mechanism rises to the high position, the traction part 27 on the support seat at the bottom of the lifting rod acts on the guide part 27, driving the limiting block to move radially inward, and the elastic member 91 is compressed. At this time, the limiting block disengages from the second slot, releasing the restriction on the circumferential direction of the scratcher.

[0142] When the shuffling disc rotates, the friction between it and the scraper arm causes the scraper to rotate in the same direction at a certain angle. The transmission gear ring then rotates to mesh with the drive gear. The shuffling disc drives the scraper to rotate via a third transmission mechanism. The scraper rotates in the same direction as the shuffling disc, but its rotational speed is less than that of the shuffling disc. After the lifting motor 301 drives the dice disc to descend from a high position to a low position, the scraper rotates one revolution until the first slot reaches the position of the limit block. Under the action of the elastic element 91, the limit block enters the first slot, locking the scraper again. The drive gear disengages from the transmission gear ring through the clearance position. The shuffling disc continues to rotate until the shuffling is complete.

[0143] In summary, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mahjong machine with a rotatable tile scraper, characterized in that, At least including: A card scraper, comprising a card scraper base, a plurality of scraper arms disposed on the outer periphery of the card scraper base, and a sleeve disposed on the inner side of the card scraper base, wherein the sleeve is provided with a first slot extending radially outward from the inner wall of the sleeve. A limiting mechanism, comprising at least a limiting seat and a slider slidably connected to the limiting seat, a limiting block and an elastic element disposed on the slider, the limiting block being adapted to the first slot, and the elastic element having elastic potential energy to drive the limiting block into or out of the first slot. When the limiting block is located in the first slot, the scratcher is restricted to a stationary state and cannot rotate; when the limiting block is separated from the first slot, the scratcher can rotate in the same direction as the shuffling disc, and the state of the scratcher is controlled by the radial movement of the limiting block; and A central lifting mechanism is provided with a driving part for driving the limiting block to separate from the first slot.

2. The mahjong machine with a rotatable tile scraper according to claim 1, characterized in that, A guide mechanism is provided between the slider and the limiting seat.

3. The mahjong machine with a rotatable card scraper according to claim 2, characterized in that, The guiding mechanism includes a guide rail and a guide groove that match each other, and the guide rail and guide groove are respectively disposed on the slider and the limiting seat.

4. A mahjong machine with a rotatable tile scraper according to claim 2 or 3, characterized in that, The central lifting mechanism includes at least a fixed lifting seat, a vertical cam located within the lifting seat, and a drive motor for driving the vertical cam to rotate. The limiting seat is fixedly connected to the lifting seat. The vertical cam is provided with an annular platform for contacting and engaging with the side of the slider away from the limiting block. The elastic element is located on the side of the slider away from the annular platform and is configured to have elastic potential energy to drive the limiting block to separate from the first slot. The driving part is a recess provided on the annular platform.

5. A mahjong machine with a rotatable card scraper according to claim 2 or 3, characterized in that, The central lifting mechanism includes at least a fixed lifting seat, a lifting rod vertically movably connected to the lifting seat, and a support seat at the lower end of the lifting rod. The elastic element is located between the slider and the lifting seat and is configured to have elastic potential energy to drive the limiting block into the first slot. The bottom of the slider is provided with a downwardly extending guide portion at the end away from the limiting block. The support seat is provided with a traction portion for cooperating with the guide portion.

6. The mahjong machine with a rotatable card scraper according to claim 1, characterized in that, The limiting mechanism includes a connecting rod, the limiting block is located at one end of the connecting rod, the other end of the connecting rod is an elastic element connection end, one end of the elastic element is connected to the elastic element and configured to have elastic potential energy to drive the limiting block into the first slot, and a hinge portion is provided between the limiting block and the elastic element connection end.

7. The mahjong machine with a rotatable card scraper according to claim 6, characterized in that, The elastic element connection end is provided with a spring receiving groove, and a force guiding part is provided on the side of the elastic element connection end away from the spring receiving groove.

8. The mahjong machine with a rotatable card scraper according to claim 7, characterized in that, The central lifting mechanism includes at least a fixed lifting seat, the connecting rod is hinged to the lifting seat through the hinge part, and the lifting seat is provided with a second slot for accommodating the limiting block.

9. The mahjong machine with a rotatable card scraper according to claim 8, characterized in that, The central lifting mechanism also includes a vertical cam located within the lifting seat and a drive motor for driving the vertical cam to rotate. The driving part is a pressing protrusion located on the outside of the vertical cam and used to cooperate with the force-guiding part.

10. The mahjong machine with a rotatable card scraper according to claim 8, characterized in that, The central lifting mechanism also includes a lifting rod that is vertically and movably connected to the lifting seat and a support seat located at the lower end of the lifting rod. The driving part is a pressing part located on the support seat and used to cooperate with the force-guiding part.

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