Roller coaster type eight-opening mahjong machine and slope tile lifting assembly thereof

Through the card-up rocker arm and linkage rod structure of the sloped card-up assembly, the flexible layout of power transmission is achieved, and the problems of insufficient space utilization and high power costs under the compact structure of the card storage channel are solved, reducing the size of the mahjong machine and saving power cost.

CN222238748UActive Publication Date: 2024-12-27HANGZHOU TIANJI TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421103325.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-20
Publication Date
2024-12-27
Estimated Expiration
2034-05-20

AI Technical Summary

Technical Problem

The existing roller coaster eight-hole mahjong machine is difficult to effectively utilize space when the storage channel is compact, resulting in the power transmission structure occupying space, increasing the volume of the mahjong machine, and requires independent driving components, which has high power costs.

Method used

The sloped card lift assembly is adopted to realize power transmission through the card lift rocker arm and linkage rod. Only one driving module is needed to drive one card lift pallet. The linkage rod between the two pallets reduces the space occupation of the power transmission structure, and Set up a power transmission structure in appropriate locations to utilize the interior space of the mahjong machine.

Benefits of technology

It realizes a flexible layout of power transmission, reduces the size of the mahjong machine, saves power costs, and prevents the problem that the upgraded pallet cannot fall by itself due to the hinged position of the hinge.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a roller coaster type eight-opening mahjong machine and a slope tile-lifting assembly thereof, the slope tile-lifting assembly comprises a rack, a first tile-lifting supporting plate and a second tile-lifting supporting plate, the first tile-lifting supporting plate and the second tile-lifting supporting plate are hinged with the rack and driven by the same tile-lifting driving unit to lift synchronously, and the tile-lifting driving unit comprises a tile-lifting rocker arm, a linkage rod and a driving module. The fixed end of the tile lifting rocker arm is hinged to the rack, and the swing end of the tile lifting rocker arm interacts with the first tile lifting supporting plate or the second tile lifting supporting plate so as to drive the first tile lifting supporting plate or the second tile lifting supporting plate to ascend and descend. The driving module is used for driving the tile lifting rocker arm to swing around the hinge point of the tile lifting rocker arm, and the two ends of the linkage rod are connected with the first tile lifting supporting plate and the second tile lifting supporting plate respectively. The two power transmission structures (the power transmission between the driving module and one tile lifting supporting plate and the power transmission between the two tile lifting supporting plates) do not need to be arranged together and can be arranged at proper positions according to the internal space layout of the mahjong machine, and the internal space of the mahjong machine is fully utilized.
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Description

Technical Field

[0001] The utility model belongs to the technical field of mahjong machines, and in particular relates to a roller coaster-type eight-mouth mahjong machine and a slope card-raising component thereof. Background Art

[0002] Each side of the eight-mouth mahjong machine has two card outlets. Among them, the card outlet close to the player is the dealing sequence (mahjong tiles required for the start of the game), and the card outlet close to the center of the mahjong machine is the drawing sequence (used for drawing cards during the game). In this way, the cards can be played separately in the dealing sequence and the drawing sequence, making it easier for players to sort the cards as quickly as possible at the start of the game.

[0003] The most popular eight-mouth mahjong machine is the roller coaster type. A card-raising support plate is hinged at the card-out port of this mahjong machine. When the cards are out, one end of the card-raising support plate drops, and the mahjong tiles rise to the table in a roller coaster manner.

[0004] According to the direction of the cards, the current roller coaster-style eight-mouth mahjong machines can be divided into two categories:

[0005] The first type is that the cards at the two card outlets on the same side of the mahjong machine come from different stacking mechanisms, such as CN110215680B; at this time, the card incoming directions of the two card lifting plates are inconsistent, so that the descending ends of the two card lifting plates are opposite when the cards are lifted. Therefore, it is not conducive to using the same drive component to drive the two card lifting plates to work at the same time. An independent drive component needs to be set for each card lifting plate, which has high power cost.

[0006] The second type is that the cards at the two card outlets on the same side of the mahjong machine come from the same stacking mechanism, such as CN109248436B; at this time, the card incoming directions of the two card lifting plates are consistent, and the directions of the descending ends when lifting the cards are also consistent, so the same driving component can be used to drive the two card lifting plates to work at the same time.

[0007] For example, a Chinese utility model patent with publication number CN211328109U discloses a card loading system for a fully automatic mahjong machine, which includes a frame, each side of which is rotatably connected to two card-lifting and card-receiving plates, and a combined driving mechanism for driving the two card-lifting and card-receiving plates on the same side of the frame to flip over; each card-lifting and card-receiving plate has a card-lifting preparation position in which the free end is lowered to receive mahjong tiles, and a card-lifting and card-receiving position in which the free end is raised to lift the mahjong tiles; the combined driving mechanism includes a circumferential drive, and two rocker arms corresponding to the card-lifting and card-receiving plates are fixedly mounted at the power output end of the circumferential drive, and the circumferential drive is used to drive the rocker arms to reciprocate to drive the corresponding card-lifting and card-receiving plates to switch between the card-lifting preparation position and the card-lifting and card-receiving position.

[0008] The disadvantage of this combined card-lifting system is that the power output end of the circumferential drive needs to be provided with a rocker arm corresponding to the two card-lifting plates one by one. This linkage method is more suitable for the situation where the two card-lifting plates are long or the card-lifting plates are far away from the card storage channel (such as CN109248436B). When the card storage channel is in an arc-shaped curved state as disclosed in CN110215680B, the structure between at least one card-lifting plate and the card storage channel is relatively compact, and it is not convenient to set the motor between the two to use the rocker arm to drive the two card-lifting plates to rise and fall separately and simultaneously, which takes up too much space. Utility Model Content

[0009] The invention aims to provide a roller coaster-type eight-mouth mahjong machine and a slope card-raising component thereof, wherein the slope card-raising component can adapt to various internal structures of mahjong machines, can be organically combined with other internal structures of the mahjong machine, and can make full use of the internal space of the mahjong machine.

[0010] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:

[0011] A slope card-raising component of a roller coaster-type eight-mouth mahjong machine comprises a frame, a first card-raising support plate and a second card-raising support plate hinged to the frame, wherein the first card-raising support plate and the second card-raising support plate are driven by the same card-raising drive unit to rise and fall synchronously; the card-raising drive unit comprises:

[0012] A card-lifting rocker arm, the fixed end of which is hinged to the frame, and the swing end of which interacts with the first card-lifting support plate or the second card-lifting support plate to drive the first card-lifting support plate or the second card-lifting support plate to rise and fall;

[0013] A linkage rod, the two ends of which are respectively connected to the first card lifting support plate and the second card lifting support plate;

[0014] A driving module is used to drive the brand-rising rocker arm to swing around its hinge point.

[0015] In the utility model, only one of the first card-lifting support plate and the second card-lifting support plate is transmitted to the driving module, and the driving module first drives a card-lifting support plate through the card-lifting rocker arm, and then the two card-lifting support plates are linked by the linkage rod, so as to realize the power transmission. In this case, the two power transmission structures do not need to be arranged together, and can be arranged at appropriate positions according to the internal space layout of the mahjong machine, so that the internal space of the mahjong machine can be fully utilized without increasing the volume of the mahjong machine.

[0016] In the above-mentioned ramp card lifting assembly, the first card lifting support plate is closer to the card storage assembly in the mahjong machine than the second card lifting support plate, and the card lifting rocker arm is used to drive the second card lifting support plate to rise and fall. Compared with the linkage rod, the drive unit and the card lifting rocker arm need to occupy more space, and the first card lifting support plate is closer to the card storage assembly, so the space reserved for the drive unit is small, so the card lifting rocker arm in the utility model is used to drive the second card lifting support plate to rise and fall.

[0017] In the utility model, the lifting rocker arm drives the second lifting support plate to rise and fall in the following manner: a lifting protrusion is fixedly provided at the bottom of the second lifting support plate, and a lifting curved groove is formed on the side of the lifting protrusion; the swing end of the lifting rocker arm is provided with a lifting bearing which rolls or slides with the lifting curved groove.

[0018] Preferably, in the above-mentioned ramp card lifting assembly, the linkage rod is arranged on the side of the card lifting projection facing the free end of the second card lifting support plate. This is more labor-saving.

[0019] Preferably, in the above-mentioned ramp card-lifting assembly, one end of the linkage rod is fixedly arranged at the bottom of the second card-lifting supporting plate, and the other end extends to the bottom of the first card-lifting supporting plate.

[0020] The linkage rod can be simply placed on the bottom of the first card-raising support plate. In this case, the linkage rod is only used to drive the first card-raising support plate to rise, and the free end of the first card-raising support plate falls under its own gravity. However, in order to prevent the first card-raising support plate from being unable to fall by itself due to the jamming of the hinged position with the frame, as a further preferred embodiment, in the above-mentioned ramp card-raising assembly, the bottom of the first card-raising support plate is provided with a connecting piece for linking the first card-raising support plate and the linkage rod;

[0021] The connecting member is a hooking member, which includes a base connected to the first lifting plate, and the base is provided with an arc-shaped hooking portion; the end of the linkage rod is inserted into the hooking portion;

[0022] Alternatively, the connecting member is a clamping member, and the end of the linkage rod is clamped by the clamping member. In this way, the linkage rod can drive the first card lifting support plate to descend and ascend at the same time.

[0023] Preferably, in the above-mentioned ramp card-raising assembly, the card-raising rocker arms at the four sides of the mahjong machine are all driven by the same drive module, which can further reduce the number of drive units and save the power cost of card-raising.

[0024] As a further preference, in the above-mentioned ramp card-lifting assembly, an annular linkage is provided on the frame, a transmission module is provided between the annular linkage and each card-lifting rocker arm, and the driving unit is connected to the annular linkage or any card-lifting rocker arm.

[0025] As a further preferred embodiment, in the above-mentioned ramp card-lifting assembly, the transmission module includes a transmission gear fixedly connected to the card-lifting rocker arm, and the annular linkage member is formed with a first transmission rack meshing with the transmission gear;

[0026] The driving module comprises a brand-raising motor, a driving gear is fixedly arranged on the output shaft of the brand-raising motor, and a second transmission rack meshing with the driving gear is formed on the annular linkage member; or the transmission gear is fixedly connected to the output shaft of the brand-raising motor;

[0027] The transmission gear or driving gear is a complete gear or an incomplete gear.

[0028] When the card-lifting motor is working, the driving gear meshes with the second transmission rack to drive the annular linkage to rotate. Then, under the meshing transmission of the first transmission rack and the transmission gear, the card-lifting rocker arms on the four sides of the mahjong machine swing synchronously; or, the card-lifting motor drives one of the transmission gears to rotate. Then, under the meshing of the transmission gear and the first transmission rack, the annular linkage rotates, and then drives the other transmission gears to rotate, and the card-lifting rocker arms on the four sides also swing synchronously.

[0029] The utility model also provides a roller coaster type eight-mouth mahjong machine, wherein the eight-mouth mahjong machine comprises the above-mentioned slope card raising component.

[0030] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0031] (1) In the present invention, only one of the first card-lifting support plate and the second card-lifting support plate is in transmission with the driving module. The driving module first drives one card-lifting support plate through the card-lifting rocker arm, and then the two card-lifting support plates are linked by the linkage rod, so as to realize the transmission of power. In this case, the two power transmission structures do not need to be arranged together, and can be arranged at appropriate positions according to the internal space layout of the mahjong machine, so that the internal space of the mahjong machine can be fully utilized without increasing the volume of the mahjong machine.

[0032] (2) In the utility model, a connecting piece is provided at the bottom of the first card-lifting pallet for linking the first card-lifting pallet and the linkage rod; thus, the linkage rod can drive the first card-lifting pallet to descend and ascend at the same time, thereby preventing the first card-lifting pallet from being unable to descend by itself due to being stuck at the hinge position with the frame.

[0033] (3) In the present invention, an annular linkage member is provided on the frame, and a transmission module is provided between the annular linkage member and each card-raising rocker arm. The drive module is connected to the annular linkage member or any card-raising rocker arm. In this way, the card-raising rocker arms on all four sides of the mahjong machine are driven by the same drive module, which can further reduce the number of drive units and save the power cost for card-raising. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a slope card raising component of a roller coaster-type eight-mouth mahjong machine of the utility model;

[0035] Figure 2 It is a structural schematic diagram of the slope card raising component of a roller coaster-type eight-mouth mahjong machine of the utility model from another perspective;

[0036] Figure 3 for Figure 1 A schematic diagram of the structure of the monitoring module in another perspective;

[0037] Figure 4 Another structural schematic diagram of the slope card raising component of the roller coaster-type eight-mouth mahjong machine of the utility model;

[0038] Figure 5 for Figure 4 The schematic diagram of the structure of the ramp lifting assembly shown in another perspective;

[0039] Figure 6 The utility model is a structural schematic diagram of a roller coaster type eight-mouth mahjong machine. DETAILED DESCRIPTION

[0040] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] Example 1

[0042] like Figure 1 and Figure 2 As shown, the present embodiment is a slope card raising component of a roller coaster-type eight-mouth mahjong machine, comprising a first card raising support plate 2 and a second card raising support plate 3. Figure 6 It can be seen that in the mahjong machine, the first card lifting plate 2 and the second card lifting plate 3 are hinged to the frame 1, and the hinged ends are on the same side. Therefore, the same card lifting drive unit can be used to drive the first card lifting plate 2 and the second card lifting plate 3 to rise and fall synchronously.

[0043] In this embodiment, the card-lifting drive unit includes a card-lifting rocker arm 4, the fixed end of which is also hinged to the frame 1, and the driving module can drive the card-lifting rocker arm 4 to swing around its hinge point. The driving module can be a card-lifting motor (not shown in the figure) coaxially connected to the card-lifting rocker arm 4; the swinging end of the card-lifting rocker arm 4 interacts with the first card-lifting pallet 2 or the second card-lifting pallet 3 to drive the first card-lifting pallet 2 or the second card-lifting pallet 3 to rise and fall.

[0044] from Figure 6It can be seen that in the roller coaster-type eight-mouth mahjong machine, if the card storage component 90 is curved and the mahjong tiles in the card storage component are transported to the card raising plate on the same side of the mahjong machine, the first card raising plate 2 and the card storage component are basically "zero distance"; at the same time, the first card raising plate 2 is used to raise the card dealing sequence (i.e., the mahjong tiles required by the player when starting the game), and is relatively short, so that there is no space between the first card raising plate 2 and the card storage component to set the drive module.

[0045] Therefore, in this embodiment, the card-lifting rocker arm 4 interacts with the second card-lifting support plate 3 to reserve assembly space for the drive unit; and the first card-lifting support plate 2 is linked with the second card-lifting support plate 3 through the linkage rod 8.

[0046] Specifically, Figure 2 As shown, a lifting block 5 is fixedly provided at the bottom of the second lifting support plate 3, and a lifting curved groove 51 is formed on the side of the lifting block 5; and the swing end of the lifting rocker arm 4 is provided with a lifting bearing 41 that rolls with the lifting curved groove 51. When the lifting rocker arm 4 swings, the lifting bearing 41 rolls in the lifting curved groove 51 and drives the second lifting support plate 3 to rise and fall.

[0047] Depend on Figure 1 and Figure 2 It can be seen that the card-lifting rocker arm 4 is also equipped with a same-frequency rocker arm 7 coaxially arranged therewith. The same-frequency rocker arm 7 is shorter than the card-lifting rocker arm 4, and a magnet 71 is fixed on its swing end. A monitoring module 6 is arranged on the frame 1 to monitor the swing amplitudes of the same-frequency rocker arm 7 and the card-lifting rocker arm 4 to control the operation of the driving module.

[0048] like Figure 3 Shown, combined Figure 1 It can be seen that the monitoring module 6 includes a substrate 61, on which a first magnetic sensor 62 and a second magnetic sensor 63 are arranged. The first magnetic sensor 62 and the second magnetic sensor 63 are both on the movement trajectory of the magnet 71, and are used to detect whether the second card lifting plate 3 has dropped to the required height or whether it has risen to be flush with the desktop.

[0049] like Figure 2 As shown, on the side of the free end of the lifting block 5 facing the second lifting plate 3, a linkage rod 8 is arranged between the second lifting plate 3 and the first lifting plate 2; one end of the linkage rod 8 is fixed to the bottom of the second lifting plate 3, and the other end extends to the bottom of the first lifting plate 2.

[0050] The linkage rod 8 can be simply placed on the bottom of the first card lifting support plate 2. In this case, the linkage rod 8 is only used to drive the first card lifting support plate 2 to rise. When descending, the free end of the first card lifting support plate 2 descends under its own gravity and will not be pulled by the linkage rod 8. However, in order to prevent the first card lifting support plate 2 from being unable to descend by itself due to the jamming of the hinge position with the frame 1, a hooking member 9 is provided at the bottom of the first card lifting support plate 2 in this embodiment; Figure 2 As shown, the hooking member 9 includes a base 91 connected to the first brand-lifting support plate 2 , and the base 91 has an arc-shaped hooking portion 92 ; and the end of the linkage rod 8 is stuck in the hooking portion 92 .

[0051] The advantage of this structure is that the first card-lifting support plate 2 and the second card-lifting support plate 3 are independent and can be easily assembled on the frame 1 respectively; after they are assembled on the frame 1 respectively, it is only necessary to directly insert the end of the linkage rod 8 into the hooking portion 92, which is very quick and convenient.

[0052] The working principle of the ramp card raising component of a roller coaster-type eight-mouth mahjong machine in this embodiment is as follows:

[0053] When it is necessary to raise the card, the raising motor starts (forward rotation), drives the raising rocker arm 4 to swing, and the raising bearing 41 rolls along the raising curved groove 51, while the second raising support plate 3 is lowered; the linkage rod 8 transmits the downward trend of the second raising support plate 3 to the first raising support plate 2, so that the first raising support plate 2 is lowered synchronously;

[0054] When the first magnetic sensor 62 detects the magnet 71, it indicates that the first card lifting support plate 2 and the second card lifting support plate 3 have dropped to a predetermined height. At this time, the first magnetic sensor 62 sends a signal to the control module, and the control module pauses the card lifting motor after receiving the signal.

[0055] After all the mahjong tiles are placed on the first card-lifting support plate 2 and the second card-lifting support plate 3, the card-lifting motor starts again (reverses), driving the card-lifting rocker arm 4 to swing back. At this time, the first card-lifting support plate 2 and the second card-lifting support plate 3 rise synchronously; when the second magnetic sensor 63 detects the magnet 71, it indicates that the first card-lifting support plate 2 and the second card-lifting support plate 3 have risen to be flush with the table top. At this time, the second magnetic sensor 63 sends a signal to the control module, and the control module pauses the card-lifting motor after receiving the signal.

[0056] Example 2

[0057] like Figure 4 and Figure 5 As shown, the present embodiment is a slope card-lifting assembly of a roller coaster-type eight-mouth mahjong machine, and its structure is basically the same as that of embodiment 1, except that: all the card-lifting support plates on the four sides of the mahjong machine are driven to rise and fall by a driving module.

[0058] Therefore, an annular linkage 10 is added, which is also rotatably matched with the frame 1. A transmission module is provided between the annular linkage 10 and each lifting rocker arm 4, and the lifting motor is connected to the annular linkage 10 or any lifting rocker arm 4.

[0059] like Figure 4 and Figure 5 As shown, the transmission module includes a transmission gear 42 fixedly connected to or integrally formed with the brand-raising rocker arm 4 , and a first transmission rack 101 respectively meshing with each transmission gear 42 is formed on the annular linkage member 10 .

[0060] When the card-lifting motor is connected to one of the card-lifting rocker arms 4 as in Example 1, when the driving unit drives the card-lifting rocker arm 4 and the transmission gear 42 to rotate, under the engagement of the transmission gear 42 and the first transmission rack 101, the annular linkage 10 also rotates, thereby driving the other transmission gears 42 to rotate, and the four card-lifting rocker arms 4 also swing synchronously.

[0061] When the card-raising motor is connected to the annular linkage 10, a driving gear 11 is fixedly arranged on the output shaft of the card-raising motor, and a second transmission rack 102 meshing with the driving gear 11 is formed on the annular linkage 10. When the card-raising motor is working, the driving gear 11 meshes with the second transmission rack 102 to drive the annular linkage 10 to rotate, and under the meshing transmission of the first transmission rack 101 and the transmission gear 42, the card-raising rocker arms 4 at the four sides of the mahjong machine swing synchronously.

[0062] In this embodiment, the transmission gear 42 and the driving gear 11 can be either complete gears or incomplete gears.

[0063] Example 3

[0064] The present embodiment is a roller coaster-type eight-mouth mahjong machine, wherein the eight-mouth mahjong machine includes the same ramp card raising component as that in the first or second embodiment.

Claims

1. A slope card-raising assembly for a roller coaster-type eight-mouth mahjong machine, comprising a frame (1), a first card-raising support plate (2) and a second card-raising support plate (3) hinged to the frame (1), wherein the first card-raising support plate (2) and the second card-raising support plate (3) are driven by the same card-raising drive unit to rise and fall synchronously; characterized in that: The brand-raising drive unit comprises: A card-lifting rocker arm (4), wherein a fixed end of the card-lifting rocker arm (4) is hinged to the frame (1), and a swing end of the card-lifting rocker arm (4) interacts with the first card-lifting support plate (2) or the second card-lifting support plate (3) to drive the first card-lifting support plate (2) or the second card-lifting support plate (3) to rise or fall; A linkage rod (8), the two ends of which are respectively connected to the first card lifting support plate (2) and the second card lifting support plate (3); A drive module is used to drive the brand-raising rocker arm (4) to swing around its hinge point.

2. The ramp-up sign assembly according to claim 1, characterized in that: The first card raising support plate (2) is closer to the card storage assembly in the mahjong machine than the second card raising support plate (3), and the card raising rocker arm (4) is used to drive the second card raising support plate (3) to rise and fall.

3. The ramp-up sign assembly according to claim 2, characterized in that: A lifting block (5) is fixedly provided at the bottom of the second lifting support plate (3), and a lifting curve groove (51) is formed on the side of the lifting block (5); and a lifting bearing (41) is provided at the swing end of the lifting rocker arm (4) for rolling or sliding engagement with the lifting curve groove (51).

4. The ramp-up sign assembly according to claim 2, characterized in that: The linkage rod (8) is arranged on one side of the free end of the card-lifting protrusion (5) facing the second card-lifting supporting plate (3).

5. The ramp-lifting assembly according to any one of claims 1 to 4, characterized in that: One end of the linkage rod (8) is fixed to the bottom of the second card-raising support plate (3), and the other end extends to the bottom of the first card-raising support plate (2).

6. The ramp-up sign assembly according to claim 5, characterized in that: A connecting piece for linking the first card-raising support plate (2) and the linkage rod (8) is provided at the bottom of the first card-raising support plate (2); The connecting member is a hooking member (9), the hooking member (9) comprising a base (91) connected to the first brand-raising support plate (2), the base (91) having an arc-shaped hooking portion (92); the end of the linkage rod (8) is inserted into the hooking portion (92); Alternatively, the connecting member is a clamping member, and the end of the linkage rod (8) is clamped by the clamping member.

7. The ramp-up sign assembly according to claim 1, characterized in that: The card-raising rocker arms (4) at the four sides of the mahjong machine are all driven by the same driving module.

8. The ramp-up sign assembly according to claim 7, characterized in that: An annular linkage member (10) is provided on the frame (1), a transmission module is provided between the annular linkage member (10) and each card-raising rocker arm (4), and the drive unit is connected to the annular linkage member (10) or any card-raising rocker arm (4).

9. The ramp-lifting assembly according to claim 8, characterized in that: The transmission module comprises a transmission gear (42) fixedly connected to the brand-raising rocker arm (4), and a first transmission rack (101) meshing with the transmission gear (42) is formed on the annular linkage member (10); The driving module comprises a lifting motor, a driving gear (11) is fixedly arranged on the output shaft of the lifting motor, and a second transmission rack (102) meshing with the driving gear (11) is formed on the annular linkage member (10); or, the transmission gear (42) is fixedly connected to the output shaft of the lifting motor; The transmission gear (42) or the driving gear (11) is a complete gear or an incomplete gear.

10. A roller coaster-style eight-mouth mahjong machine, characterized in that: It comprises the ramp lifting assembly as described in any one of claims 1-9.

Citation Information

Patent Citations

  • Roller coaster style eight-player fully automatic mahjong machine

    CN109248436B

  • Mahjong machine and its card picking and transporting system, ramp card discharging device

    CN110215680B

  • Tile feeding system of full-automatic mahjong machine

    CN211328109U