Mahjong machine

Abstract

The utility model discloses a mahjong machine which comprises a machine frame, a motor and a transmission gear, the motor and the transmission gear are arranged on the machine frame, a connecting portion is arranged on the transmission gear, the motor is in transmission connection with a transmission shaft, and the transmission shaft penetrates through the connecting portion and drives the transmission gear to rotate. The mahjong machine further comprises a sliding bearing arranged on the connecting part in a sleeving mode, and a breaking seam allowing the transmission shaft to penetrate is formed in the circumferential wall of the sliding bearing so that the sliding bearing can be in a broken ring shape. The mahjong machine has the advantage of solving the problem that the process of replacing a bearing on a transmission gear of an existing mahjong machine is complex. When the sliding bearing is installed, the transmission shaft penetrates through the breaking seam in the radial direction, the transmission shaft is arranged in the sliding bearing in a penetrating mode, then the sliding bearing is pushed to the connecting part and arranged on the connecting part in a sleeving mode, and installation of the sliding bearing is completed. The whole bearing replacement step is very simple, and the operation difficulty is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of entertainment equipment, concretely relates to a mahjong machine. BACKGROUND

[0002] The mahjong machine utilizes the motor to drive the gear set through the transmission shaft, rotates the ejection wheel set to push the cam mechanism, controls the mahjong tile pushing plate to push out the mahjong tiles. In order to ensure the stable rotation of the gear set, the gear is generally installed on the rack through the bearing, and the bearing needs to be replaced after long-term use, but the whole gear transmission assembly needs to be disassembled, which causes the disassembly process to be very inconvenient. Therefore, people think of replacing the traditional bearing with a partial bearing, which includes an upper bush and a lower bush, and the upper bush and the lower bush are spliced to form a ring-shaped bearing to make the gear run stably. However, in addition to the upper bush and the lower bush, the partial bearing also has a bearing cover and a bearing seat, and the bearing cover or the bearing seat needs to be removed before replacing the bush, and the whole replacement process is still relatively complicated. SUMMARY

[0003] The utility model aims at providing a mahjong machine which can effectively solve the problem of complex bearing replacement process on the transmission gear of the existing mahjong machine.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical scheme:

[0005] A mahjong machine comprises a rack, a motor and a transmission gear arranged on the rack, a connecting part is arranged on the transmission gear, the motor is connected with the transmission shaft in transmission, the transmission shaft penetrates through the connecting part and drives the transmission gear to rotate, and the mahjong machine further comprises a sliding bearing sleeved on the connecting part, a disconnection gap for the transmission shaft to penetrate is arranged on the peripheral wall of the sliding bearing, so that the sliding bearing is in the form of a disconnected ring.

[0006] In the above mahjong machine, the disconnection gap is arranged along the axial direction of the sliding bearing.

[0007] In the above mahjong machine, the peripheral wall of the sliding bearing is provided with a fixed part extending outward, and a fixed hole connected with the rack is arranged on the fixed part.

[0008] In the above mahjong machine, a fixed column with a threaded hole is arranged on the rack at a position corresponding to the fixed hole.

[0009] In the above mahjong machine, a positioning rib is arranged on the fixed part at the outer periphery of the fixed hole, and the positioning rib surrounds the outer periphery of the fixed column.

[0010] In the above mahjong machine, the fixed part has two and is respectively arranged at both ends of the diameter of the sliding bearing.

[0011] In the mahjong machine, the inner side of the circumferential wall of the sliding bearing is provided with a plurality of radially arranged bearing pads.

[0012] In the mahjong machine, the connecting part is provided with a radially outwardly protruding step near one end of the transmission gear, and the end face of the step abuts against the end face of the bearing pad.

[0013] In the mahjong machine, the end face of the sliding bearing is provided with a radially inwardly protruding stop edge, and the stop edge abuts against the end face of the connecting part.

[0014] Compared with the prior art, the mahjong machine has the following advantages:

[0015] The sliding bearing in the form of a broken ring solves the problem of complex bearing replacement process on the transmission gear of the mahjong machine. Since the circumferential wall of the sliding bearing is provided with a broken gap, the sliding bearing is in the form of a broken ring. Therefore, when the sliding bearing is installed, the transmission shaft can pass through the broken gap in the radial direction, so that the transmission shaft is arranged in the sliding bearing. Then, the sliding bearing is pushed towards the connecting part and is sleeved on the connecting part to complete the installation of the sliding bearing. The sliding bearing is provided with a broken gap, and the sliding bearing is a separate part, unlike a partial bearing which is composed of two bearing pads. Therefore, when installed in a narrow space, the sliding bearing does not need to be aligned and spliced with two bearing pads like a partial bearing. Moreover, since there is a broken gap, when the sliding bearing is sleeved on the transmission shaft, the transmission shaft does not need to be disassembled from the motor or the gear. The transmission shaft can pass through the broken gap to achieve the sleeving step of the sliding bearing. This makes the entire bearing replacement step very simple and greatly reduces the operation difficulty.

[0016] Further, the broken gap is formed in parallel to the axial direction of the sliding bearing. When installed, the axis of the sliding bearing is kept parallel to the axis of the transmission shaft to reduce the occupation of the radial space during the installation of the sliding bearing, which is more suitable for installation in a narrow space.

[0017] Further, the circumferential wall of the sliding bearing is provided with an outwardly extending fixing part, and the fixing part is provided with a fixing hole connected with the rack. The relative position of the sliding bearing is further fixed by the fixing hole, and the sliding bearing and the rack can be fixed together by a fixing member passing through the fixing hole.

[0018] Further, the rack is provided with a fixing column with a threaded hole at a position corresponding to the fixing hole. The fixing column with a threaded hole can conveniently realize the fixed connection of the sliding bearing and the rack by using a screw, and the separate fixing column does not affect the strength of the rack because of the threaded hole in the rack.

[0019] Further, the fixed part is provided with a positioning rib on the outer periphery of the fixed hole, which surrounds the outer periphery of the fixed column. Through the cooperation of the positioning rib and the positioning column, the sliding bearing can be preliminarily positioned, and subsequent fixation by screws is facilitated.

[0020] Further, the fixed part has two and is located at both ends of the diameter of the sliding bearing. Two fixed parts balance the stress of the sliding bearing and are not prone to deflection.

[0021] Further, the inner side of the peripheral wall of the sliding bearing is provided with a plurality of radially arranged radial tiles in the circumferential direction. The radial tiles can bear radial load and ensure the rotation accuracy of the transmission gear.

[0022] Further, the connecting part is provided with a radially outwardly protruding step near one end of the transmission gear, and the end face of the step abuts against the end face of the radial tile. The step limits the axial position of the radial tile along the transmission shaft, ensuring that the sliding bearing can be assembled in place when sleeved into the connecting part.

[0023] Further, the end face of the sliding bearing is provided with a radially inwardly protruding stop edge, and the stop edge abuts against the end face of the connecting part. The stop edge abuts against the end face of the connecting part to position the relative position of the sliding bearing and the connecting part, and the stop edge can also limit the other end of the radial tile. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure diagram of the connection of the motor and the transmission gear in the mahjong machine.

[0025] Figure 2 It is a sectional view of the mahjong machine.

[0026] Figure 3 It is Figure 2 It is a local enlarged view of A in the middle.

[0027] Figure 4 It is a perspective view of the sliding bearing in the mahjong machine.

[0028] Figure 5 It is a sectional view of the sliding bearing and the transmission gear after assembly in the mahjong machine.

[0029] The reference signs are:

[0030] The frame 100, the fixed column 110, the threaded hole 111, the motor 200, the transmission shaft 210, the transmission gear 300, the connecting part 310, the step 311, the sliding bearing 400, the disconnection seam 410, the fixed part 420, the fixed hole 421, the positioning rib 422, the radial tile 430, and the stop edge 440. DETAILED DESCRIPTION

[0031] A mahjong machine, comprising a frame 100, a motor 200 and a transmission gear 300 arranged on the frame 100, the transmission gear 300 is provided with a connecting part 310, the motor 200 is in transmission connection with a transmission shaft 210, the transmission shaft 210 penetrates the connecting part 310 and drives the transmission gear 300 to rotate, and the mahjong machine further comprises a sliding bearing 400 sleeved on the connecting part 310, a disconnection seam 410 for the transmission shaft 210 to penetrate is arranged on the peripheral wall of the sliding bearing 400, so that the sliding bearing 400 is in a disconnected annular shape.

[0032] By adopting the sliding bearing 400 in a disconnected annular shape, the problem that the bearing replacement process on the transmission gear 300 of the mahjong machine is complex is solved. Since the disconnection seam 410 is arranged on the peripheral wall of the sliding bearing 400, the sliding bearing 400 is in a disconnected annular shape, so that when the sliding bearing 400 is installed, the transmission shaft 210 can penetrate the disconnection seam 410 along the radial direction, that is, the transmission shaft 210 is arranged in the sliding bearing 400, then the sliding bearing 400 is pushed to the connecting part 310 and is sleeved on the connecting part 310, and the installation of the sliding bearing 400 is completed. The sliding bearing 400 is provided with the disconnection seam 410, and the sliding bearing 400 is also a separate part and is not composed of two bearing bushes like a partial bearing, so that when the sliding bearing 400 is installed in a narrow space, the two bearing bushes do not need to be aligned and spliced like the partial bearing, and since the disconnection seam 410 is arranged, when the sliding bearing 400 is sleeved on the transmission shaft 210, the transmission shaft 210 does not need to be disassembled from the motor 200 or the gear, and the sliding bearing 400 can be sleeved by penetrating the disconnection seam 410 by the transmission shaft 210, so that the bearing replacement steps are very simple and the operation difficulty is greatly reduced.

[0033] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0035] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0036] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] Referring to Figures 1 to 5 For an embodiment of the mahjong machine of the present application, a mahjong machine, comprising a tile pushing assembly, the tile pushing assembly is mounted on the frame 100, the tile pushing assembly comprises a motor 200 and a transmission gear 300 driven to rotate by the motor 200, the transmission gear 300 drives the crank mechanism or the cam mechanism to move the tile pushing plate. In this embodiment, the motor 200 is connected to the transmission shaft 210 through the shaft coupling, and the transmission shaft 210 transmits power to drive the motor 200 to rotate the transmission gear 300.

[0038] Specifically, a connecting portion 310 is provided on the transmission gear 300, which enlarges the contact area with the transmission shaft 210, so that the transmission gear 300 rotates more stably. Generally, the connecting portion 310 is coaxial with the transmission gear 300 and has a rotating hole opened along the axis, the transmission shaft 210 is inserted into the rotating hole to drive the transmission gear 300 to rotate, the connecting portion 310 can be fixedly connected with the transmission gear 300 by adhesion or other methods, or the connecting portion 310 and the transmission gear 300 can be integrally manufactured.

[0039] In order to ensure the stability of the transmission gear 300 during rotation, the transmission gear 300 is rotatably connected to the frame 100, so that the transmission gear 300 can remain stable during rotation even if the transmission shaft 210 is long. A sliding bearing 400 is arranged between the transmission gear 300 and the frame 100, and is lubricated to reduce wear between the transmission gear 300 and the frame 100 during rotation. The sliding bearing 400 has a broken gap 410 in the circumferential wall, so that the sliding bearing 400 is in the form of a broken ring, that is, the cross section of the sliding bearing 400 is C-shaped. In this way, when the sliding bearing 400 is installed, the transmission shaft 210 and the transmission gear 300 do not need to be disassembled, the transmission shaft 210 is passed through the broken gap 410 in the radial direction, the sliding bearing 400 is sleeved on the transmission shaft 210, and then the sliding bearing 400 is sleeved on the connecting portion 310 in the circumferential direction and fixed between the connecting portion 310 and the frame 100, thereby completing the installation of the sliding bearing 400. Since the sliding bearing 400 is a complete component, it does not need to be assembled from several parts during installation, and the installation steps are simplified.

[0040] The size of the broken gap 410 is slightly larger than the diameter of the transmission shaft 210 if the sliding bearing 400 cannot be elastically deformed, so that the transmission shaft 210 can be conveniently passed through the broken gap 410 in the radial direction, but the width of the broken gap 410 is smaller than the diameter of the connecting portion 310 to prevent the sliding bearing 400 from being separated from the connecting portion 310, and the smaller the width of the broken gap 410, the larger the area covered by the connecting portion 310, and the better the lubrication protection effect. Of course, even if the broken gap 410 exists, it will not affect the rotation of the transmission gear 300. If the sliding bearing 400 can be elastically deformed, the width of the broken gap 410 can be slightly smaller than the diameter of the transmission shaft 210, so that the transmission shaft 210 can be inserted into the sliding bearing 400 by causing the sliding bearing 400 to elastically deform and temporarily increasing the width of the broken gap 410 to be slightly larger than or equal to the diameter of the transmission shaft 210.

[0041] Further, the broken gap 410 is arranged in the axial direction parallel to the sliding bearing 400, so that the length of the broken gap 410 is the shortest and the strength of the sliding bearing 400 is the least affected, and the sliding bearing 400 and the transmission shaft 210 are installed in the axial direction during installation, which is more suitable for installation in a narrow space than in the case of inclination relative to the axis.

[0042] As Figure 2 , Figure 3As shown, for the fixing of the sliding bearing 400, the sliding bearing 400 can be directly extruded between the connecting part 310 and the frame 100, or a fixing part can be used for fixing. When a fixing part is needed to be used for fixing, a fixing part 420 extending outward can be arranged on the peripheral wall of the sliding bearing 400, and a fixing hole 421 connected with the frame 100 is opened on the fixing part 420, and the connecting part 310 passes through the fixing hole 421 and is fixed with the frame 100, so as to determine the relative position of the sliding bearing 400.

[0043] Further, a fixing column 110 with a threaded hole 111 is arranged at a position corresponding to the fixing hole 421 on the frame 100, and a screw or a bolt can be used to pass through the fixing hole 421 and the threaded hole 111 for connection, which is convenient for fixing the sliding bearing 400. In order to arrange the threaded hole 111 on the fixing column 110, the influence of the threaded hole 111 arranged on the frame 100 on the strength of the frame 100 or other components can be reduced.

[0044] Due to the small space in the frame 100, if a screw is used for connection, the screw needs to pass through the fixing hole 421 and be aligned with the threaded hole 111, and it is often difficult to align, which reduces the installation efficiency. Therefore, a positioning rib 422 is arranged on the outer periphery of the fixing hole 421, the positioning rib 422 is annular, the inner rib size of the positioning rib 422 is equal to the outer diameter of the fixing column 110, so that the positioning rib 422 can be wrapped around the outer periphery of the fixing column 110. During installation, the fixing column 110 can be inserted into the positioning rib 422 to preliminarily position the sliding bearing 400 and the frame 100, and then the screw is screwed into the threaded hole 111, so that the success rate of screwing is greatly improved, and the entire installation efficiency is improved. Two fixing parts 420 are arranged on the peripheral wall of the sliding bearing 400, and the two fixing parts 420 are respectively located at two ends in the radial direction of the sliding bearing 400. There are two fixing points, so that the sliding bearing 400 is fixed more stably and is not easy to overturn.

[0045] As shown in the above embodiment, Figure 4 , Figure 5 As shown, on the basis of the above embodiment, a plurality of radially arranged radial tiles 430 are arranged on the inner side of the peripheral wall of the sliding bearing 400, which bear radial load and ensure the rotation accuracy of the transmission gear 300. The radial tiles 430 can be integrally manufactured with the body of the sliding bearing 400, or the radial tiles 430 can be fixed on the inner side of the peripheral wall of the sliding bearing 400 by welding or other methods.

[0046] Further, the connecting part 310 is provided with a step 311 protruding outward in the radial direction near the side of the transmission gear 300, and the end face of the step 311 abuts against the end face of the radial bearing 430 facing the transmission gear 300, that is, the step 311 is used to position in the radial direction, and in this way, the end face of the sliding bearing 400 is prevented from directly contacting the end face of the transmission gear 300, and the friction force acting on the transmission gear 300 is reduced.

[0047] Still further, the end face of the sliding bearing 400 is provided with a stop edge 440 protruding inward in the radial direction, and the stop edge 440 abuts against the end face of the connecting part 310, that is, the other end of the radial bearing 430 is positioned in the axial direction, so that both ends of the radial bearing 430 are positioned in the axial direction, and the radial bearing 430 is prevented from moving in the axial direction during operation. Moreover, the stop edge 440 abuts against the end face of the connecting part 310 away from the transmission gear 300, and the position of the sliding bearing 400 and the connecting part 310 in the axial direction is positioned. The stop edge 440 can be provided on the end face of the sliding bearing 400 or can be formed by several segments, and both can play the role of the stop edge 440.

[0048] During installation, the transmission shaft 210 is inserted through the break joint 410 in the radial direction of the transmission shaft 210, so that the sliding bearing 400 is sleeved on the transmission shaft 210, and then the sliding bearing 400 is pushed toward the transmission gear 300 in the axial direction, and the sliding bearing 400 is sleeved on the connecting part 310, and at the same time, the fixed column 110 is inserted into the space surrounded by the positioning rib 422, and the preliminary positioning of the sliding bearing 400 and the rack 100 is completed. The height of the positioning rib 422 is not very high, and only slightly protrudes from the surface of the fixed part 420, so that the preliminary positioning of the positioning column and the positioning rib 422 can be achieved by slight deformation of the rack 100 or the sliding bearing 400. Then, the screw is screwed through the fixed hole 421 and the threaded hole 111 of the fixed column 110, and the sliding bearing 400 and the rack 100 are completely fixed together. When the sliding bearing 400 needs to be disassembled, the above steps are reversed. When the sliding bearing 400 is replaced, the transmission shaft 210 and the transmission gear 300 do not need to be disassembled, and the sliding bearing 400 is an integral whole, and it is more convenient to replace and install than two halves.

[0049] The above only describes specific embodiments of the present application, but the technical features of the present application are not limited thereto, and any person skilled in the art can make changes or modifications in the field of the present application, which are all covered by the patent scope of the present application.

Claims

1. A mahjong machine, comprising a frame, a motor and a transmission gear arranged on the frame, the transmission gear being provided with a connecting portion, the motor being in transmission connection with a transmission shaft, the transmission shaft penetrating through the connecting portion and driving the transmission gear to rotate, characterized in that, The mahjong machine further comprises a sliding bearing sleeved on the connecting portion, a disconnection gap is arranged on the peripheral wall of the sliding bearing to allow the transmission shaft to pass through, so that the sliding bearing is in the form of a disconnected ring.

2. The mahjong machine according to claim 1, wherein The disconnection gap is arranged along the axial direction of the sliding bearing.

3. The mahjong machine according to claim 1, wherein The peripheral wall of the sliding bearing is provided with an outwardly extending fixing portion, and a fixing hole connected with the frame is arranged on the fixing portion.

4. The mahjong machine according to claim 3, wherein A fixing column with a threaded hole is arranged on the frame at a position corresponding to the fixing hole.

5. The mahjong machine according to claim 4, wherein A positioning rib is arranged on the outer periphery of the fixing hole of the fixing portion, and the positioning rib surrounds the outer periphery of the fixing column.

6. A mahjong machine according to any one of claims 3 to 5, wherein, The fixing portion has two and is arranged at both ends of the diameter of the sliding bearing.

7. The mahjong machine according to claim 1, wherein, A plurality of radially arranged radial tiles are arranged on the inner side of the peripheral wall of the sliding bearing.

8. The mahjong machine according to claim 7, wherein, The connecting portion is provided with a radially outwardly protruding step near one end of the transmission gear, and the end face of the step abuts against the end face of the radial tile.

9. The mahjong machine according to claim 8, wherein, The end face of the sliding bearing is provided with a radially inwardly protruding stop edge, and the stop edge abuts against the end face of the connecting portion.

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