Mahjong tile feeding device of automatic mahjong machine

Abstract

The utility model discloses a tile feeding device of an automatic mahjong machine. The tile feeding device solves the problems that in the prior art, a tensioning assembly in a tile feeding device is troublesome to install, poor in stability and limited in service life. The tile conveying device of the automatic mahjong machine comprises a tile sucking wheel, a tile conveying support, an outlet wheel, a belt and a tensioning assembly, the tile sucking wheel is used for sucking mahjong tiles, and the tile conveying support comprises a main support and an auxiliary support which are arranged at intervals in the axial direction of the tile sucking wheel and connected with each other. The outlet wheel is arranged between the main support and the auxiliary support, the belt surrounds the mahjong tile suction wheel and the outlet wheel, the tensioning assembly comprises a tensioning wheel and a tensioning shell for installing the tensioning wheel, the tensioning wheel tensions the belt, the main support is provided with a first connecting seat, the auxiliary support is provided with a second connecting seat, and the first connecting seat is connected with the second connecting seat. The tensioning shell is installed on the first connecting base and the second connecting base in an inserted mode. The tile conveying device is easy to install and good in stability and service life.

Description

Technical Field

[0001] This utility model relates to the field of automatic mahjong machine technology, and in particular to the card feeding device of an automatic mahjong machine. Background Technology

[0002] The automatic mahjong machine's tile feeding device includes a tile-absorbing wheel, an outlet wheel, and a belt wrapped around the tile-absorbing wheel and the outlet wheel. The belt is tensioned by a tensioning wheel to prevent it from slack.

[0003] Existing card-feeding devices, such as the Chinese utility model patent with publication number CN214597170U entitled "A Tensioning Wheel Assembly, Card-Picking and Conveying Device and Mahjong Machine Thereof", have a tensioning assembly connected to the back plate of the card-feeding device by screws. However, the screw installation increases the assembly process, leading to increased labor costs. Secondly, the tensioning assembly is mounted on the back plate, forming a cantilever structure with one end fixed. During the use of the tensioning assembly, the tensioning shell is easily subjected to force on one side, which can easily lead to poor stability and a reduced service life of the tensioning shell. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art by proposing a card feeding device for an automatic mahjong machine, so as to solve the problems of troublesome installation, poor stability and short service life of the tensioning components in the prior art card feeding device.

[0005] To achieve the above technical objectives, the automatic mahjong machine card-feeding device proposed in this utility model includes:

[0006] The tile-collecting wheel is used to collect mahjong tiles.

[0007] The card delivery bracket includes a main bracket and a secondary bracket that are spaced apart and connected along the axial direction of the card suction wheel;

[0008] An export wheel is located between the main support and the auxiliary support;

[0009] A belt, which wraps around the card-collecting wheel and the exit wheel; and,

[0010] The tensioning assembly includes a tensioning wheel and a tensioning housing for mounting the tensioning wheel. The tensioning wheel tensions the belt. A first connecting seat is provided on the main bracket, and a second connecting seat is provided on the secondary bracket. The tensioning housing is inserted into the first connecting seat and the second connecting seat.

[0011] The card-feeding device of this utility model has a tensioning shell installed on a card-feeding bracket through an insert-fitting mechanism with a first connecting seat and a second connecting seat. The left and right connections of the main bracket and the auxiliary bracket limit the tensioning assembly on the card-feeding bracket. No screws are needed to fix the tensioning shell to the main bracket or the auxiliary bracket, thus reducing the assembly difficulty and cost of the tensioning assembly. Furthermore, the first connecting seat and the second connecting seat support the two ends of the tensioning shell respectively, avoiding the problem of unilateral force on the tensioning shell during use, which helps to improve the stability of the tensioning assembly and increase the service life of the tensioning shell. Moreover, since the second connecting seat cooperates with the first connecting seat to support the tensioning shell, the structural strength of the support structure supporting the tensioning shell in the first and second connecting seats can be correspondingly reduced. Compared with the technical solution where the tensioning shell is fixed to the main bracket or the auxiliary bracket, this solution can reduce the amount of material used in the support structure, thereby saving costs.

[0012] Preferably, the first connecting seat is provided with a limiting baffle, and the tensioning shell is provided with a limiting rib. The limiting baffle stops the limiting rib to restrict the tensioning shell from disengaging from the first connecting seat in the direction away from the main support.

[0013] By adopting the aforementioned technical solution, by setting a limiting baffle on the first connecting seat and setting a limiting rib on the tensioning housing, the limiting baffle stops the limiting rib to prevent the tensioning component from detaching from the first connecting seat, making it difficult for the tensioning component pre-positioned on the main support to detach from the main support, thereby improving the reliability of the tensioning component pre-positioned on the main support.

[0014] Preferably, the limiting rib is provided with a limiting part, which stops at one end of the limiting baffle to limit the insertion depth of the tensioning shell.

[0015] By adopting the aforementioned technical solution, the limiting part can limit the insertion depth of the tensioning shell, ensuring the accurate installation of the tensioning shell. At the same time, the limiting part can cooperate with the limiting baffle to provide a certain support force to the tensioning shell to balance the reaction force between the belt and the tensioning assembly, thereby improving the stability of the tensioning assembly.

[0016] Preferably, the main support is provided with guide ribs, the guide ribs having guide surfaces toward the tensioning shell, the guide surfaces guiding the tensioning shell to be inserted into the first connecting seat.

[0017] By adopting the aforementioned technical solution and setting guide ribs, the installation difficulty of inserting the tensioning component into the first connecting seat is reduced, and the installation of the tensioning component into the first connecting seat is ensured to be correctly inserted, thus avoiding incorrect or incomplete installation of the tensioning component due to operator error.

[0018] Preferably, there are two guide ribs, which are located on opposite sides of the tensioning shell in the width direction.

[0019] By adopting the aforementioned technical solution, two guide ribs are set to limit the insertion direction of the tensioning shell during the insertion process, thereby preventing the tensioning shell from shaking or rotating during the insertion process and thus preventing it from being inserted into place.

[0020] Preferably, the first connecting seat has an opening on the side near the belt, and one end of the guide rib extends out of the first connecting seat through the opening.

[0021] By adopting the aforementioned technical solution, one end of the guide rib extends out of the first connecting seat, which enables the guide rib to be inserted and guided before the tensioning shell enters the first connecting seat, thereby improving the guiding effect of the guide rib and further reducing the insertion difficulty of the tensioning shell.

[0022] Preferably, the tensioning housing is inclined relative to the card delivery bracket, and the corner of the bottom of the tensioning housing is chamfered to form a roughly horizontal chamfered surface.

[0023] By adopting the aforementioned technical solution, the straight-line distance between the first connecting seat, the second connecting seat, the tensioning shell and the bottom end of the card feeding bracket and the bottom surface of the card feeding bracket is increased, thereby increasing the straight-line distance between the first connecting seat, the second connecting seat, the tensioning shell and the mahjong tiles on the shuffling tray of the automatic mahjong machine, reducing the probability of card jamming.

[0024] Preferably, the first connecting seat is tilted with the tensioning shell, and a first support and a second support are formed below the first connecting seat. The first support and the second support are respectively located at opposite ends in the width direction of the tensioning shell, and the bottom end of the tensioning shell extends from between the first support and the second support along the height direction of the card feeding bracket.

[0025] By adopting the aforementioned technical solution, since the bottom end of the tensioning shell extends between the first support and the second support, the first connecting seat is prevented from overlapping with the tensioning shell in the height direction of the card feeding bracket. This makes the lowest point of the tensioning shell and the first connecting seat in the height direction of the card feeding bracket the bottom end of the tensioning shell, further increasing the straight-line distance between the first connecting seat and the mahjong tiles on the shuffling tray of the automatic mahjong machine, and reducing the probability of card jamming.

[0026] Preferably, the second connecting seat is tilted with the tensioning housing, and a partial break is formed at the bottom of the second connecting seat, with the bottom end of the tensioning housing extending out from the break along the height direction of the card feeding bracket.

[0027] By adopting the aforementioned technical solution, since the bottom end of the tensioning shell extends from the disconnection, the second connecting seat is prevented from overlapping with the tensioning shell in the height direction of the card feeding bracket. This makes the lowest point of the tensioning shell and the second connecting seat in the height direction of the card feeding bracket the bottom end of the tensioning shell, further increasing the straight-line distance between the second connecting seat and the mahjong tiles on the shuffling tray of the automatic mahjong machine, and reducing the probability of card jamming.

[0028] Preferably, one end of the belt is inclined from top to bottom from the bottom of the outlet wheel to the bottom of the card suction wheel, the tensioning assembly and the first connecting seat are located below the belt, and the tensioning housing is inclined from one end of the first connecting seat to the card suction wheel.

[0029] By adopting the aforementioned technical solution, the belt is tilted and the tensioning housing is tilted from one end of the first connecting seat toward the card suction wheel, so that the tensioning component and the belt can form a more suitable tension angle, thereby improving the tensioning efficiency between the tensioning component and the belt and the service life of the tensioning component.

[0030] Preferably, the first connecting seat and the second connecting seat symmetrically support the tensioning shell.

[0031] By adopting the aforementioned technical solution, the first connecting seat and the second connecting seat can provide good support for the tensioning shell, thereby preventing the tensioning shell from twisting or turning under the reaction force of the tensioning force during use and improving the stability of the tensioning assembly. At the same time, since the first connecting seat and the second connecting seat symmetrically support the tensioning shell, the first connecting seat and the second connecting seat do not need to support the tensioning shell separately, thereby reducing the support strength required by the first connecting seat and the second connecting seat, reducing the amount of material used, and also preventing the first connecting seat or the second connecting seat from forming a cantilever structure that independently supports the tensioning shell.

[0032] Preferably, the sub-support is provided with a stop plate, and the tensioning housing is provided with a limiting plate protruding towards the sub-support. The stop plate stops the limiting plate to restrict the movement of the tensioning housing towards the belt.

[0033] Using the aforementioned technical solution, after the card delivery bracket is assembled, the secondary bracket can limit the tensioning component in the circumferential direction, thereby restricting the movement of the tensioning component relative to the card delivery bracket, reducing or avoiding the shaking of the tensioning component, and improving the stability of the tensioning component.

[0034] Preferably, the tensioning assembly further includes a tensioning seat and an elastic element. The tensioning wheel and the tensioning seat are rotatably connected via a rotating shaft. The tensioning housing is provided with a mounting groove. The elastic element is pre-pressed into the mounting groove. At least a portion of the tensioning seat is installed in the mounting groove and abuts against the elastic element. The tensioning housing is provided with a guide groove. The tensioning seat is provided with a limiting claw that cooperates with the guide groove. The limiting claw moves along the guide groove to limit the elastic floating range of the tensioning seat. The tensioning housing stops at both ends of the rotating shaft within the elastic floating range of the tensioning seat.

[0035] By adopting the aforementioned technical solution, the tensioning seat and the tensioning housing are coordinated by the guide groove and the limiting claw to prevent the tensioning seat from detaching from the tensioning housing when it floats upward. The tensioning housing stops at both ends of the rotating shaft within the elastic floating range of the tensioning seat, so that the rotating shaft will not be in a position of detachment from the limit during the movement of the tensioning wheel. This prevents the tensioning assembly from detaching from the tensioning seat and the tensioning wheel under long-term use, thus avoiding tensioning failure.

[0036] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the card-feeding device in an embodiment of this utility model;

[0038] Figure 2 This is an exploded view of the card-feeding device in an embodiment of this utility model;

[0039] Figure 3 This is a schematic diagram showing the pre-positioning of the card-collecting wheel, the outlet wheel, the belt, and the tensioning assembly on the main support in an embodiment of this utility model.

[0040] Figure 4 This is a partial schematic diagram of the tensioning component and the first connecting seat being inserted and fitted together in an embodiment of this utility model;

[0041] Figure 5 This is a schematic diagram of the main support in an embodiment of the present utility model;

[0042] Figure 6 This is a schematic diagram of the secondary support in an embodiment of the present utility model;

[0043] Figure 7 This is a schematic diagram of the main support, secondary support, and tensioning assembly in an embodiment of this utility model;

[0044] Figure 8 This is an exploded view of the tensioning assembly in an embodiment of this utility model;

[0045] Figure 9 This is a schematic diagram of the tensioning component in an embodiment of the present invention.

[0046] Figure label:

[0047] 100. Card-absorbing wheel;

[0048] 200, Card delivery bracket; 210, Main bracket; 211, Guide rib; 2111, Guide surface; 220, Secondary bracket; 221, Stop plate; 230, First connecting seat; 231, First support; 232, Second support; 233, Limiting baffle; 235, Opening; 240, Second connecting seat; 241, Disconnection opening;

[0049] 300. Export vessels;

[0050] 400. Belt;

[0051] 500. Tensioning assembly; 510. Tensioning housing; 511. Mounting groove; 512. Guide groove; 513. Limiting rib; 5131. Limiting part; 5132. Limiting surface; 514. Limiting plate; 515. Chamfered surface; 516. Mating surface; 520. Tensioning seat; 521. Limiting claw; 5211. Elastic arm; 5212. Claw part; 522. Separating groove; 530. Tensioning wheel; 540. Rotating shaft;

[0052] 600, Card Suction Motor. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] like Figures 1 to 7 As shown in the embodiment of this utility model, the automatic mahjong machine's tile-feeding device includes a tile-absorbing wheel 100, a tile-feeding bracket 200, an outlet wheel 300, a belt 400, and a tensioning assembly 500. The tile-absorbing wheel 100 is used to absorb mahjong tiles. The tile-feeding bracket 200 includes a main bracket 210 and a secondary bracket 220, which are spaced apart along the axial direction of the tile-absorbing wheel 100 and connected to form the tile-feeding bracket 200. The outlet wheel 300 is located between the main bracket 210 and the secondary bracket 220. The belt 400 wraps around the tile-absorbing wheel 100 and the outlet wheel 300.

[0058] The card-collecting wheel 100 of this utility model can be referenced to the Chinese utility model patent with publication number CN212941371U, entitled "Card-collecting wheel assembly, card-feeding device and automatic mahjong machine".

[0059] In this embodiment, the card-collecting wheel 100 is roughly triangular prism in shape, with two adjacent rectangular sides of the triangular prism connected by an arc surface, and the rectangular sides of the card-collecting wheel 100 are close to the mahjong tiles being collected.

[0060] In some other embodiments, the card-collecting wheel 100 may also be in other shapes, such as a generally polygonal prism, wherein two adjacent rectangular sides of the polygonal prism are typically connected by an arc surface.

[0061] In this embodiment, the card feeding device also includes a card suction motor 600. The card suction motor 600 is installed on the side of the main support 210 opposite to the secondary support 220. The motor shaft of the card suction motor 600 passes through the main support 210 and is connected to the card suction wheel 100. The operation of the card suction motor 600 drives the card suction wheel 100 to rotate. The card suction wheel 100 drives the belt 400 to rotate, and the rotation of the belt 400 drives the outlet wheel 300 to rotate in the same direction as the card suction wheel 100.

[0062] In some other embodiments, the rotation of the outlet wheel 300 can drive the belt 400 to rotate, thereby driving the card suction wheel 100 to rotate.

[0063] The main support 210 is used to preposition the card suction wheel 100, the outlet wheel 300, the belt 400, and the tensioning assembly 500. The auxiliary support 220 is connected to the main support 210 to form the card delivery support 200, thereby fixing or limiting the card suction wheel 100, the outlet wheel 300, the belt 400, and the tensioning assembly 500 in the card delivery support 200.

[0064] In this embodiment, the tensioning assembly 500 includes a tensioning pulley 530 for the tensioning belt 400 and a tensioning housing 510 for mounting the tensioning pulley 530. A first connecting seat 230 is provided on the main support 210, and a second connecting seat 240 is provided on the secondary support 220. The tensioning housing 510 is inserted into the first connecting seat 230 and the second connecting seat 240. The first connecting seat 230 and the second connecting seat 240 provide support and limit the tensioning housing 510.

[0065] The belt 400 is divided into a carrying section and a return section by the exit wheel 300 and the card suction wheel 100. The carrying section is always located above the return section. The carrying section is used to carry and transport mahjong tiles. The tension wheel 530 is tensioned on the return section of the belt 400.

[0066] In this invention, the tensioning housing 510 is installed on the card delivery bracket 200 via an insert-fitting mechanism with the first connecting seat 230 and the second connecting seat 240. The left and right connections of the main bracket 210 and the auxiliary bracket 220 limit the tensioning assembly 500 to be mounted on the card delivery bracket 200. No screws are required to fix the tensioning housing 510 to the main bracket 210 and the auxiliary bracket 220, thus reducing the assembly difficulty and cost of the tensioning assembly 500. Furthermore, the first connecting seat 230 and the second connecting seat 240 respectively support both ends of the tensioning housing 510, preventing… This solution addresses the issue of unilateral stress on the tensioning housing 510 during use, improving the stability of the tensioning assembly 500 and increasing the service life of the tensioning housing 510. Furthermore, since the second connecting seat 240 cooperates with the first connecting seat 230 to support the tensioning housing 510, the structural strength of the support structure in the first connecting seat 230 and the second connecting seat 240 can be reduced accordingly. Compared to the technical solution where the tensioning housing 510 is fixed to the main bracket 210 or the auxiliary bracket 220, this solution can reduce the amount of material used in the support structure, thereby saving costs.

[0067] In this embodiment, one of the main support 210 and the secondary support 220 is provided with a plurality of positioning pins, and the other is provided with a plurality of positioning grooves. The main support 210 and the secondary support 220 are positioned by the pin grooves and fixedly connected by fasteners.

[0068] In one embodiment, such as Figure 2 , Figure 3 , Figure 8 , Figure 9 As shown, the tensioning assembly 500 also includes a tensioning seat 520 and an elastic element (not shown). The tensioning wheel 530 and the tensioning seat 520 are rotatably connected via a rotating shaft 540. The tensioning housing 510 is provided with a mounting groove 511. The elastic element is pre-pressed in the mounting groove 511. At least part of the tensioning seat 520 is installed in the mounting groove 511 and abuts against the elastic element. The tensioning housing 510 is provided with a guide groove 512. The tensioning seat 520 is provided with a limiting claw 521 that cooperates with the guide groove 512. The limiting claw 521 moves along the guide groove 512 to limit the elastic floating range of the tensioning seat 520.

[0069] The tensioning assembly 500 can be pre-installed on the main support 210 before the belt 400. Since the tension of the belt 400 is achieved by the elastic element acting on the tensioning pulley 530, when installing the belt 400, force can be applied to press the tensioning pulley 530 into the tensioning housing 510, and then the belt 400 without tension can be wrapped around the card suction wheel 100 and the outlet wheel 300. After releasing the tensioning pulley 530, the tensioning pulley 530 is pressed against the belt 400 under the elastic force of the elastic element, thereby tensioning the belt 400.

[0070] The tensioning assembly 500 can also be pre-installed on the main bracket 210 after the belt 400. The belt 400, without tension, wraps around the card suction wheel 100 and the outlet wheel 300. By moving the belt 400 to make room for the installation of the tensioning assembly 500, and at the same time, force is applied to press the tensioning wheel 530 into the tensioning housing 510, so that the tensioning assembly 500 can be inserted into the first connecting seat 230. The tensioning wheel 530 and the belt 400 are released, and the tensioning wheel 530 is pressed onto the belt 400 under the elastic force of the elastic element, thereby tensioning the belt 400.

[0071] In this embodiment, the tensioning housing 510 is provided with guide grooves 512 on both sides, and the limiting claws 521 are correspondingly provided with the guide grooves 512.

[0072] In this embodiment, as Figure 8 As shown, the limiting claw 521 includes an elastic arm 5211 and a claw portion 5212. The elastic arm 5211 is integrally formed on the tensioning seat 520, and the claw portion 5212 is located at the free end of the elastic arm 5211. The fixed section of the elastic arm 5211 is connected to the tensioning seat 520, and a partition groove 522 is provided between the elastic arm 5211 and the tensioning seat 520. This creates a cantilever structure with the elastic arm 5211, and the claw portion 5212 is placed in the guide groove 512, allowing the tensioning seat 520 to move along the extension direction of the guide groove 512. The claw portion 5212 protrudes from the tensioning seat 520, and the elastic arm 5211 can elastically deform, thereby inserting the tensioning seat 520 into the tensioning housing 510. The cooperation of the guide groove 512 and the limiting claw 521 limits the elastic floating range of the tensioning seat 520, preventing the tensioning seat 520 from detaching from the tensioning housing 510 during elastic floating.

[0073] In this preferred embodiment, such as Figure 8 , Figure 9 As shown, the tension housing 510 is stopped at both ends of the rotating shaft 540 within the elastic floating range of the tension seat 520.

[0074] This design ensures that the shaft 540 does not come out of its restraint position during the movement of the tension wheel 530, thus preventing the shaft 540 from coming out of the tensioning seat 520 and the tension wheel 530 during long-term use and causing tension failure.

[0075] In one embodiment, such as Figure 2 , Figure 3 , Figures 7 to 9 As shown, the tensioning housing 510 is inclined relative to the card delivery bracket 200, and the corner of the bottom of the tensioning housing 510 is chamfered to form a roughly horizontal chamfered surface 515.

[0076] The card delivery bracket 200 is mounted on the shuffling tray. Since the card suction wheel 100 needs to pick up the mahjong tiles on the shuffling tray, the straight-line distance between the card suction wheel 100 and the shuffling tray is relatively short, generally slightly greater than the thickness of a mahjong tile. When the automatic mahjong machine shuffles, the stacking of mahjong tiles on the shuffling tray increases the height of the mahjong tiles. The taller mahjong tiles are prone to jamming with the tensioning component 500 on the card delivery bracket 200 and the first connecting seat 230.

[0077] The tensioning housing 510 is tilted relative to the card delivery bracket 200, and the corners of the bottom of the tensioning housing 510 are chamfered, thereby increasing the straight-line distance between the bottom of the tensioning housing 510 and the bottom surface of the card delivery bracket 200. Since the first connecting seat 230 and the second connecting seat 240 are used to insert and support the tensioning housing 510, the straight-line distance between the bottom of the first connecting seat 230 and the second connecting seat 240 and the bottom surface of the card delivery bracket 200 is also increased accordingly.

[0078] In this embodiment, the corner of the bottom of the tensioned housing 510 is a corner edge. The chamfered surface 515 being approximately horizontal means that the angle between the chamfered surface 515 and the horizontal plane is small, typically less than 10°.

[0079] The above settings increase the straight-line distance between the bottom of the first connecting seat 230, the second connecting seat 240, the tensioning housing 510 and the bottom surface of the card feeding bracket 200, thereby increasing the straight-line distance between the first connecting seat 230, the second connecting seat 240, the tensioning housing 510 and the mahjong tiles on the automatic mahjong machine's shuffling tray, and reducing the probability of card jamming.

[0080] In one embodiment, such as Figures 2 to 5 , Figure 7 As shown, the first connecting seat 230 is tilted with the tensioning housing 510. The first connecting seat 230 is disconnected below to form a first support 231 and a second support 232. The first support 231 and the second support 232 are respectively located at opposite ends in the width direction of the tensioning housing 510. The bottom end of the tensioning housing 510 along the height direction of the card feeding bracket 200 extends from between the first support 231 and the second support 232.

[0081] Since the bottom end of the tensioning housing 510 extends between the first support 231 and the second support 232, the first connecting seat 230 is prevented from overlapping with the tensioning housing 510 in the height direction of the card feeding bracket 200. This makes the lowest point of the tensioning housing 510 and the first connecting seat 230 in the height direction of the card feeding bracket 200 the bottom end of the tensioning housing 510, further increasing the straight-line distance between the first connecting seat 230 and the mahjong tiles on the automatic mahjong machine's shuffling tray, and reducing the probability of card jamming.

[0082] In one embodiment, such as Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, the second connecting seat 240 is tilted with the tensioning housing 510, and the lower part of the second connecting seat 240 is partially broken to form a break opening 241. The bottom end of the tensioning housing 510 along the height direction of the card feeding bracket 200 extends out from the break opening 241.

[0083] Since the bottom end of the tensioning housing 510 extends from the breakout 241, the second connecting seat 240 is prevented from overlapping with the tensioning housing 510 in the height direction of the card feeding bracket 200. This makes the lowest point of the tensioning housing 510 and the second connecting seat 240 in the height direction of the card feeding bracket 200 the bottom end of the tensioning housing 510, further increasing the straight-line distance between the second connecting seat 240 and the mahjong tiles on the automatic mahjong machine's shuffling tray, and reducing the probability of card jamming.

[0084] In one embodiment, such as Figure 3 As shown, one end of the belt 400 slopes from the bottom of the outlet wheel 300 toward the bottom of the card suction wheel 100 from top to bottom. The tensioning assembly 500 and the first connecting seat 230 are located below the belt 400, and the tensioning housing 510 slopes from one end of the first connecting seat 230 toward the card suction wheel 100.

[0085] In this embodiment, the diameter of the outlet wheel 300 is smaller than that of the card suction wheel 100, and the highest point of the outlet wheel 300 is at the same height as the highest point of the card suction wheel 100, so that the belt 400 below the outlet wheel 300 and the card suction wheel 100 tilts from the bottom of the outlet wheel 300 to the bottom of the card suction wheel 100 from top to bottom.

[0086] In some other embodiments, the highest point of the export wheel 300 may be parallel to the highest point of the card-absorbing wheel 100, or the highest point of the export wheel 300 may be slightly lower than the highest point of the card-absorbing wheel 100.

[0087] The inclination of the belt 400 and the inclination of the tension housing 510 from one end of the first connecting seat 230 toward the card suction wheel 100 enable the tensioning assembly 500 and the belt 400 to form a more suitable tension angle, thereby improving the tensioning efficiency between the tensioning assembly 500 and the belt 400 and the service life of the tensioning assembly 500.

[0088] To prevent the tensioning assembly 500, pre-positioned on the main support 210, from detaching from the main support 210, in one embodiment, such as Figures 2 to 5 , Figure 8 , Figure 9As shown, the first connecting seat 230 is provided with a limiting baffle 233, and the tensioning shell 510 is provided with a limiting rib 513. The limiting baffle 233 stops the limiting rib 513 to prevent the tensioning shell 510 from disengaging from the first connecting seat 230 in the direction away from the main support 210. The limiting baffle 233 stops at the end of the limiting rib 513 away from the main support 210.

[0089] In this embodiment, limiting ribs 513 are provided on both sides of the tensioning shell 510 in the width direction, and two limiting baffles 233 are provided corresponding to the limiting ribs 513. The two limiting baffles 233 are respectively provided on the first support 231 and the second support 232.

[0090] In some other embodiments, a limiting rib 513 may be provided on one side of the tensioning housing 510, and a corresponding limiting baffle 233 may be provided.

[0091] The limiting baffle 233 can be configured to stop the limiting rib 513 after the tensioning component 500 is inserted into place, or the limiting baffle 233 can be configured to stop the limiting rib 513 during the insertion process of the tensioning component 500 and after it is inserted into place.

[0092] By setting a limiting baffle 233 on the first connecting seat 230 and a limiting rib 513 on the tensioning housing 510, the limiting baffle 233 stops the limiting rib 513 to prevent the tensioning assembly 500 from detaching from the first connecting seat 230, making it less likely for the tensioning assembly 500 pre-positioned on the main support 210 to detach from the main support 210, thereby improving the reliability of the tensioning assembly 500 pre-positioned on the main support 210.

[0093] In this preferred embodiment, the limiting rib 513 is provided with a limiting part 5131, which stops at one end of the limiting baffle 233 to limit the insertion depth of the tensioning shell 510.

[0094] In this embodiment, the limiting rib 513 extends along the insertion direction of the tensioning shell 510. The end of the limiting rib 513 away from the first connecting seat 230 is provided with a limiting part 5131. The limiting part 5131 forms a limiting surface 5132 on the side facing the limiting baffle 233. After the tensioning shell 510 is inserted into place, the limiting surface 5132 stops at one end of the limiting baffle 233, thereby limiting the insertion depth of the tensioning shell 510.

[0095] With this configuration, the limiting part 5131 can limit the insertion depth of the tension housing 510, ensuring the accurate installation of the tension housing 510. At the same time, the limiting part 5131 can cooperate with the limiting baffle 233 to provide a certain support force to the tension housing 510 to balance the reaction force between the belt 400 and the tensioning assembly 500, thereby improving the stability of the tensioning assembly 500.

[0096] The tensioning housing 510 is generally larger at the top and smaller at the bottom, causing the first connecting seat 230 to be generally wider at the top and narrower at the bottom. In order to correctly insert the tensioning housing 510 into the first connecting seat 230, in one embodiment, such as... Figures 2 to 5 , Figure 8 , Figure 9 As shown, the main support 210 is provided with a guide rib 211, the guide rib 211 has a guide surface 2111 facing the tension housing 510, the tension housing 510 is provided with a mating surface 516, and the guide surface 2111 guides the mating surface 516 to insert the tension housing 510 into the first connecting seat 230.

[0097] By setting guide ribs 211, the installation difficulty of inserting the tensioning component 500 into the first connecting seat 230 is reduced, and the installation of the tensioning component 500 into the first connecting seat 230 is ensured. This also avoids the installation error or incomplete installation of the tensioning component 500 due to operator misoperation.

[0098] Furthermore, since the tensioning housing 510 is inclined relative to the card delivery bracket 200, it needs to be inserted into the first connecting seat 230 at an angle. Compared to the vertical insertion method, the inclined insertion increases the assembly difficulty. By setting the guide rib 211, the tensioning housing 510 can be guided to be inserted into the first connecting seat 230 at an angle, thus reducing the assembly difficulty.

[0099] In one embodiment, such as Figure 5 As shown, there are two guide ribs 211, which are located on opposite sides of the tensioning shell 510.

[0100] In this embodiment, the two guide ribs 211 are located on opposite sides of the tensioning shell 510 in the width direction.

[0101] By setting two guide ribs 211, the insertion direction of the tensioning shell 510 during the insertion process is limited, so as to avoid the tensioning shell 510 from shaking or rotating during the insertion process and thus failing to insert it into place.

[0102] In one embodiment, such as Figure 5 As shown, the first connecting seat 230 has an opening 235 on the side near the belt 400, and one end of the guide rib 211 extends out of the first connecting seat 230 through the opening 235.

[0103] The tensioning housing 510 is inserted into the first connecting seat 230 from the opening 235 in a direction away from the belt 400. One end of the guide rib 211 extends out of the first connecting seat 230 from the opening 235, so that the guide rib 211 can guide the tensioning housing 510 to be inserted before it enters the first connecting seat 230, thereby improving the guiding effect of the guide rib 211 and further reducing the difficulty of inserting the tensioning housing 510.

[0104] In one embodiment, such as Figure 6 , Figure 8 , Figure 9 As shown, the auxiliary support 220 is provided with a stop plate 221, and the tensioning housing 510 is provided with a limiting plate 513 protruding towards the auxiliary support 220. The stop plate 221 stops the limiting plate 513 to restrict the movement of the tensioning assembly 500 towards the belt 400. The limiting plate 513 protrudes from the second end plate, and the stop plate 221 stops the limiting plate 513 on the side near the belt 400.

[0105] The auxiliary bracket 220 is connected to the main bracket 210 along the axial direction of the card suction wheel 100, and the tensioning housing 510 is inserted into the auxiliary bracket 220 along the axial direction of the card suction wheel 100.

[0106] With this configuration, after the card delivery bracket 200 is assembled, the auxiliary bracket 220 can limit the tensioning component 500 in the circumferential direction, thereby restricting the movement of the tensioning component 500 relative to the card delivery bracket 200, reducing or avoiding the shaking of the tensioning component 500, and improving the stability of the tensioning component 500.

[0107] In one embodiment, such as Figure 2 , Figure 7 As shown, the first connecting seat 230 and the second connecting seat 240 symmetrically support the tensioning shell 510.

[0108] In this embodiment, the first connecting seat 230 is supported on opposite sides of the tensioning housing 510 near the main support 210, and the second connecting seat 240 is supported on opposite sides of the tensioning housing 510 near the auxiliary support 220. In this embodiment, the opposite sides refer to opposite sides of the tensioning housing 510 along its width direction.

[0109] In this way, the first connecting seat 230 and the second connecting seat 240 can provide good support for the tensioning shell 510, thereby preventing the tensioning shell 510 from twisting or turning under the reaction force of the tensioning force during use, and improving the stability of the tensioning assembly 500. At the same time, since the first connecting seat 230 and the second connecting seat 240 symmetrically support the tensioning shell 510, the first connecting seat 230 and the second connecting seat 240 do not need to support the tensioning shell 510 separately, thereby reducing the support strength required by the first connecting seat 230 and the second connecting seat 240, reducing the amount of material used, and also preventing the first connecting seat 230 or the second connecting seat 240 from forming a cantilever structure that independently supports the tensioning shell 510.

[0110] 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. The tile-feeding device for an automatic mahjong machine, comprising: The tile-collecting wheel is used to collect mahjong tiles. The card delivery bracket includes a main bracket and a secondary bracket that are spaced apart and connected along the axial direction of the card suction wheel; An export wheel is located between the main support and the auxiliary support; A belt, wrapped around the card-collecting wheel and the exit wheel; as well as, The tensioning assembly includes a tensioning pulley and a tensioning housing on which the tensioning pulley is mounted, the tensioning pulley tensioning the belt. The main support is characterized by having a first connecting seat, the secondary support is characterized by having a second connecting seat, and the tensioning housing is inserted into the first connecting seat and the second connecting seat.

2. The tile-feeding device of the automatic mahjong machine as described in claim 1, characterized in that, The first connecting seat is provided with a limiting baffle, and the tensioning shell is provided with a limiting rib. The limiting baffle stops the limiting rib to restrict the tensioning shell from disengaging from the first connecting seat in the direction away from the main support.

3. The tile-feeding device of the automatic mahjong machine as described in claim 2, characterized in that, The limiting rib is provided with a limiting part, which stops at one end of the limiting baffle to limit the insertion depth of the tensioning shell.

4. The tile-feeding device of the automatic mahjong machine as described in claim 1, characterized in that, The main support is provided with guide ribs, which have guide surfaces facing the tensioning housing. The tensioning housing is provided with mating surfaces accordingly. The guide surfaces guide the mating surfaces to insert the tensioning housing into the first connecting seat.

5. The tile-feeding device of the automatic mahjong machine as described in claim 4, characterized in that, Two guide ribs are provided, and the two guide ribs are located on opposite sides in the width direction of the tensioning shell.

6. The tile-feeding device of the automatic mahjong machine as described in claim 4, characterized in that, The first connecting seat has an opening on the side near the belt, and one end of the guide rib extends out of the first connecting seat through the opening.

7. The tile-feeding device of the automatic mahjong machine as described in claim 1, characterized in that, The tensioning shell is inclined relative to the card delivery bracket, and the corner of the bottom of the tensioning shell is chamfered to form a roughly horizontal chamfered surface.

8. The tile-feeding device of the automatic mahjong machine as described in claim 7, characterized in that, The first connecting seat is tilted with the tensioning shell, and the first support and the second support are formed below the first connecting seat. The first support and the second support are respectively located at opposite ends in the width direction of the tensioning shell, and the bottom end of the tensioning shell extends from between the first support and the second support along the height direction of the card feeding bracket.

9. The tile-feeding device of the automatic mahjong machine as described in claim 7, characterized in that, The second connecting seat is tilted along with the tensioning housing, and a partial break is formed at the bottom of the second connecting seat. The bottom end of the tensioning housing extends out from the break along the height direction of the card feeding bracket.

10. The tile-feeding device of the automatic mahjong machine as described in claim 7, characterized in that, One end of the belt slopes downwards from the bottom of the outlet wheel toward the bottom of the card suction wheel. The tensioning assembly and the first connecting seat are located below the belt. The tensioning housing slopes from one end of the first connecting seat toward the card suction wheel.

11. The tile-feeding device of the automatic mahjong machine as described in claim 1, characterized in that, The first connecting seat and the second connecting seat symmetrically support the tensioning shell.

12. The tile-feeding device of the automatic mahjong machine as described in claim 1, characterized in that, The auxiliary support is provided with a stop plate, and the tensioning housing is provided with a limiting plate protruding towards the auxiliary support. The stop plate stops the limiting plate to restrict the tensioning housing from moving towards the belt.

13. The tile-feeding device of the automatic mahjong machine as described in claim 1, characterized in that, The tensioning assembly further includes a tensioning seat and an elastic element. The tensioning wheel and the tensioning seat are rotatably connected via a rotating shaft. The tensioning housing is provided with a mounting groove. The elastic element is pre-pressed into the mounting groove. At least a portion of the tensioning seat is installed in the mounting groove and abuts against the elastic element. The tensioning housing is provided with a guide groove. The tensioning seat is provided with a limiting claw that cooperates with the guide groove. The limiting claw moves along the guide groove to limit the elastic floating range of the tensioning seat. The tensioning housing stops at both ends of the rotating shaft within the elastic floating range of the tensioning seat.

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