Mahjong table fast mounting foot

Abstract

A mahjong table fast mounting foot belongs to the mahjong machine field, and it includes a table leg and a main frame. The main frame includes an iron plate, a frame and a small stand column. It also includes a table leg connector fixed on the main frame and a leg inner bowl embedded and fixed in the top cavity of the table leg. A first threaded structure is arranged through the center of the leg inner bowl. The first threaded structure includes a table leg screw and a first threaded hole. The bottom of the table leg connector is provided with a connector bottom with a second threaded hole. The table leg passes through the second threaded hole in the connector bottom and the first threaded hole in the center of the leg inner bowl from top to bottom through the table leg screw, so as to fix the table leg on the main frame. The application is designed in a split type by pre-burying the leg inner bowl in the table leg and fixing the table leg connector on the main frame. The core structure is matched with a single screw vertical fastening. The fastening installation can be completed by rotating a single table leg.

Description

Technical Field

[0001] This utility model relates to a quick-release leg for a mahjong table, belonging to the field of mahjong machines. Background Technology

[0002] Mahjong machines, as a common entertainment device, have been widely adopted in homes and entertainment venues. Their structure typically includes a main frame and table legs supporting it. The stability and ease of connection between the table legs and the main frame directly affect the user experience, transportation costs, and the convenience of after-sales maintenance.

[0003] Traditional table legs and main unit frames are usually connected and fixed from multiple directions using bolts, nuts and other components. During installation, users need to align multiple holes at the same time and tighten several screws in a narrow space. The process is tedious and time-consuming, requiring a high level of hands-on ability from the user, which affects the installation experience. Moreover, most traditional connection methods are designed for one-time installation. Once the connectors or table legs are damaged, disassembly and replacement are extremely difficult, often requiring professional technicians and special tools. This may even lead to damage to the main unit frame, increasing the cost and time of after-sales maintenance.

[0004] In addition, the complex connection structure makes it impossible to quickly disassemble the table legs, resulting in a large product packaging volume and increasing warehousing and logistics costs. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a quick-release leg for mahjong tables to solve the technical problem of difficult installation of existing quick-release legs for mahjong tables.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a mahjong table quick-release leg, including a table leg and a main frame, the main frame including an iron plate, a frame and a small column, and also including a table leg connector fixed to the main frame and a leg inner bowl embedded and fixed in the top cavity of the table leg, the inner bowl of the leg having a first threaded structure through its center, the first threaded structure including a table leg screw and a first threaded hole, and the bottom of the table leg connector having a connector bottom with a second threaded hole; The table legs are fixed to the main frame by table leg screws passing from top to bottom through the second threaded hole in the bottom of the connector and the first threaded hole in the center of the inner bowl of the leg.

[0007] Furthermore, the main unit frame includes an iron plate and a frame surrounding the outer perimeter of the iron plate. The bottom of the iron plate is provided with a main unit box for accommodating the main unit, and small uprights extending upward are fixedly welded to the four corners of the iron plate.

[0008] Furthermore, the table leg connector includes a hollow cylinder and a corner connector. The bottom of the cylinder is provided with a connector base, and at least a portion of the side of the corner connector is connected to the cylinder, with a fixing plate extending horizontally from its bottom.

[0009] Furthermore, the corner connector is integrally formed or fixedly connected to the outer wall of the cylinder, so that the top surface of the corner connector is flush with the top surface of the cylinder.

[0010] Furthermore, the number of borders is 4, and they are interlocked to form a square frame. The inner side of the borders has inwardly extending border connection points, and the bottom of the square frame interlocking point has a space to accommodate the cylinder.

[0011] Furthermore, a plastic insert is provided between the small column and the corner connector, and the frame connection point is connected to the top of the plastic insert through the frame fixing screw, thereby fixing the frame.

[0012] Furthermore, the fixing plate is fixedly connected to the iron plate from below by bottom fixing screws.

[0013] Furthermore, the outer diameter of the top opening of the table leg is adapted to the inner diameter of the cylinder of the table leg connector, and the top of the table leg is nested on the outside of the cylinder.

[0014] Furthermore, the first threaded structure also includes a bowl-bottom nut screwed onto the end screw of the table leg screw, the bowl-bottom nut abutting against the bottom of the inner bowl of the leg and locking the table leg screw in place.

[0015] Furthermore, the first threaded structure also includes a welded tube pre-embedded and fixed in the center of the inner bowl of the leg, with the table leg screws screwed into the welded tube and fixedly connected to the welded tube by welding.

[0016] A packaging assembly method for quick-assembly legs of a mahjong table, the method comprising the following steps: S1. Unpacking and Installation Steps: Open the packaging box containing the table legs and main unit frame, take out the table legs, and screw the table leg screws at the top of each table leg directly into the bottom of the table leg connectors pre-installed at the four corners of the bottom of the main unit frame to complete the installation of the table legs. S2. Overall removal steps: Turn the mahjong machine with the table legs installed upside down and stand it up to complete the installation of the whole machine.

[0017] The beneficial effects of this utility model are: This application utilizes a split design where the table legs are pre-embedded in the inner bowls and the table leg connectors are fixed to the main unit frame. Combined with a core structure that uses a single screw for vertical fastening, this completely changes the traditional complex installation mode involving multiple screws and angles. During installation, simply align the table leg screws inside the top of the table leg with the screw holes at the bottom of the connectors and rotate a single table leg to complete the fastening. This reduces installation time from tens of minutes to tens of seconds, greatly improving the user experience and lowering the installation threshold. Furthermore, the quick-installation structure means that the table legs and the main unit can be packaged as a single unit, significantly reducing the packaging volume, storage space, and logistics costs, and enhancing the product's market competitiveness.

[0018] The table leg connectors form a multi-layered, multi-directional connection and fixation with the small uprights and iron plates through corner connectors, plastic linings, and horizontal connector fixing screws (such as bottom fixing screws in the vertical direction and connector fixing screws in the horizontal direction). The force transmission path is clear and reasonable, effectively avoiding the shaking problem caused by single-point force. In addition, the plastic linings not only play a connecting role, but also act as elastic damping components, which can effectively absorb and buffer the vibration generated during use, prevent the screws from loosening due to vibration, and ensure quiet and stable use over a long period of time.

[0019] Compared to traditional welded or unibody structures that require replacement of the entire unit when partial damage occurs, the detachable design of this application enables targeted repairs, requiring only the replacement of the smallest faulty unit. This effectively reduces the user's maintenance costs. Furthermore, the table legs, main frame, and connectors are all independent modules. When the table legs or screws are damaged, users can unscrew the nuts and replace them themselves without the need for professional tools or technicians. This greatly simplifies the after-sales repair process and saves time and labor costs. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A schematic diagram of the overall structure of a quick-release leg for a mahjong table using this application; Figure 2 A partial structural diagram of a quick-release leg for a mahjong table, as described in this application; Figure 3 A bottom view of the structure of a quick-release leg for a mahjong table according to this application; Figure 4 This is a partial exploded structural diagram of a quick-release leg for a mahjong table, which utilizes the present application. Figure 5 This is a schematic diagram of the inner bowl structure of the leg in Examples 1 and 2; Figure 6 This is a diagram illustrating the unpacking and installation of the quick-release feet; Figure 7 This is a schematic diagram showing the entire assembly being removed.

[0021] The reference numerals in the attached figures are as follows: 2. Frame; 3. Table legs; 4. Iron plate; 5. Main unit chassis; 6. Small uprights; 7. Frame connection points; 8. Frame fixing screws; 9. Plastic lining; 10. Table leg connectors; 12. Table leg screws; 13. Corner connectors; 14. Connector bottom; 15. Bottom fixing screws; 17. Inner cup of the leg; 18. Nut at the bottom of the cup; 19. Welded pipe; 101. Cylinder; 102. Fixing plate; 1. Pressure strip; 11. Connecting screws; 16. Table leg connecting screws. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Specific implementation method one: like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a quick-assembly leg technology solution for a mahjong table: it includes table legs 3 and a main frame. The main frame includes an iron plate 4, a frame 2 and a small column 6. It also includes a table leg connector 10 fixed on the main frame and a leg inner bowl 17 embedded and fixed in the top cavity of the table leg 3. The center of the leg inner bowl 17 is provided with a first thread structure. The first thread structure includes a table leg screw 12 and a first threaded hole. The bottom of the table leg connector 10 is provided with a connector bottom 14 with a second threaded hole. The table leg 3 is fixed to the main frame by passing through the second threaded hole in the bottom of the connector 14 and the first threaded hole in the center of the inner bowl 17 of the leg from top to bottom via the table leg screw 12.

[0024] 1. The main framework includes: The main unit frame consists of a pressure strip 1, a frame 2, an iron plate 4, and a main unit chassis 5, forming the core unit. The iron plate 4 is used to seal the bottom of the mahjong machine. The center position is provided with a through hole for accommodating the main unit box 5. The main unit box 5 is located at the bottom of the iron plate 4, and small columns 6 are fixedly welded to the four corners of the iron plate 4. The small columns 6 are set perpendicular to the iron plate 4. The frame 2 surrounds the outer perimeter of the iron plate 4, specifically 4 in number, and the two frames interlock with each other to form a square frame. The inner side of the frame 2 has an inwardly extending frame connection point 7, and the bottom of the square frame interlocking point has a space to accommodate the cylinder 101. The pressure strip 1 is located at the top of the frame 2 and is used to fix and press the tablecloth or tabletop decoration laid on the top of the frame 2 to prevent it from shifting or wrinkling, while also serving to decorate and beautify the appearance.

[0025] 2. The table legs include: The table legs, from top to bottom, consist of: table leg connector 10 for connection and table leg 3 as a support unit. The table leg connector 10 includes a hollow cylinder 101 and a corner connector 13. The bottom of the cylinder 101 is provided with a connector bottom 14. At least a portion of the side of the corner connector 13 is connected to the cylinder 101, and a fixing plate 102 extends horizontally from its bottom. The corner connector 13 is fixed to the outer wall of the cylinder 101 by welding, so that the top surface of the corner connector 13 is flush with the top surface of the cylinder 101. The fixed connection is achieved by screwing the table leg connector fixing screw 16 into the cylinder 101 and out of the corner connector 13.

[0026] The outer diameter of the opening at the top of the table leg 3 is adapted to the inner diameter of the cylinder 101 of the table leg connector 10. The top of the table leg 3 is nested outside the cylinder 101, and the two are nested to achieve quick positioning and installation.

[0027] 3. The connection between the main frame and the table legs: The connecting parts, from the outside to the inside, are: frame 2, table leg connector 10, plastic lining 9, and small upright 6. These components are interconnected using a multi-layered coupling and bolt-coordinated fixing scheme. The specific connection relationships are as follows: Core load-bearing layer: The small column 6 is fixed to the inside of the top of the iron plate 4 by bolt structure, while the table leg connector 10 is fixed to the bottom of the iron plate 4 from bottom to top by the fixing plate 102 extending from its bottom, combined with the bottom fixing screw 15, forming a two-way force-bearing structure. Vibration damping connection layer: The plastic liner 9 serves as a key dielectric and vibration damping component, precisely filling the gap between the small column 6 and the corner connector 13. A rigid three-way connection is achieved through the horizontal connector fixing screw 11. Specifically, the connector fixing screw 11 is connected to the plastic liner 9 from the side of the corner connector 13 along the horizontal direction to achieve fixation. Frame fixing layer: The frame connection point 7 is connected to the top of the plastic liner 9 by the vertical frame fixing screw 8, so as to realize the floating shock absorption fixing of the frame system and the main load-bearing structure.

[0028] Example 1: like Figure 5 As shown, this embodiment provides a detachable and maintainable table leg connection scheme, with a through hole (the hole diameter is larger than the diameter of the table leg screw 12) machined in the center of the inner bowl 17 of the leg.

[0029] During assembly, insert the table leg screw 12 into the light hole from the front of the inner bowl 17 of the leg, so that the screw part is completely passed through. Then, screw the bowl bottom nut 18 into the end of the screw exposed at the bottom of the inner bowl 17 of the leg and tighten it to the specified torque using a special tool. At this time, the head of the table leg screw 12 contacts the stepped surface of the inner wall of the inner bowl 17 of the leg, and the bowl bottom nut 18 presses tightly against the bottom plane of the inner bowl 17 of the leg, achieving reliable fixation through bidirectional clamping action.

[0030] The advantages of this structure are: when the table leg screw 12 is worn or corroded, the damaged part can be replaced simply by unscrewing the bowl bottom nut 18, which greatly reduces maintenance costs. At the same time, the use of standard fastener combinations results in low production costs and makes it suitable for mass production.

[0031] Example 2: like Figure 5 As shown, this embodiment provides a highly reliable permanent fixing solution. During the manufacturing stage of the inner bowl 17, the welded tube 19 with threads on its inner wall is first vertically positioned in the mold, and then permanently fixed in the center hole of the inner bowl 17 by casting or welding.

[0032] During assembly, the table leg screws 12 are screwed directly into the threaded holes of the welded tube 19 until the predetermined tightening depth is reached. Finally, spot welding is used to seal the connection between the table leg screws 12 and the welded tube 19, so that the metal melts to form a permanent connection.

[0033] This solution completely eliminates the risk of loose threads, has extremely high vibration resistance and connection strength. Although it is not detachable, it significantly improves the product's service life and reliability. It is especially suitable for commercial applications with high-frequency use. The welded metal nugget can also play a role in rust prevention and sealing, protecting the internal threads from corrosion. If the part is damaged, it can be replaced by simply removing the inner cup 17 of the leg. Specific Implementation Method Two: Reference Figure 6 and Figure 7 As shown, a packaging assembly method for quick-assembly legs of a mahjong table includes the following steps: S1. Unpacking and Installation Steps: Open the packaging box, remove the upper layer of protective foam, and place the main frame of the mahjong machine stably in the foam padding at the bottom of the box with the bottom facing up. The four table legs 3 are neatly stacked at the bottom of the main frame.

[0035] Without moving or flipping the main unit frame, the user can directly remove the table leg 3. Align the table leg screw 12 at the top of the table leg 3 vertically with the second threaded holes on the bottom 14 of the pre-installed table leg connector 10 at the four corners of the main unit frame. Rotate the table leg 3 clockwise, gradually screwing the table leg screw 12 into the threaded holes of the connector bottom 14. Continue rotating until the top of the table leg 3 is tightly fitted against the bottom of the cylinder 101 of the table leg connector 10, and cannot be rotated further. This indicates that the installation of a single table leg 3 is complete. Using the same method, install the remaining three table legs 3 to their corresponding positions on the bottom of the main unit frame.

[0036] S2. Overall removal steps: After all four table legs 3 are installed, hold the frame 2 of the main unit frame with both hands, lift the entire product upwards and rotate it 180° so that the table legs 3 stand vertically on the ground. Then lift the packaging box along with the internal foam padding upwards to allow the main unit frame to be easily separated from the table legs 3, thus completing the installation of the whole machine.

[0037] Example 3: This embodiment shows that the table legs 3 are arranged in pairs and symmetrically placed on both sides of the main unit 5. That is, the four table legs 3 are divided into two groups, each group containing two parallel table legs 3, which are placed side by side along the side of the main unit 5 along its length.

[0038] Preferably, the extension direction of the two sets of table legs 3 is consistent with the length direction of the main unit box 5. This layout makes the overall outline of the table legs 3 fit the internal space of the rectangular main unit box 5 and the rectangular packaging box, maximizing the utilization of packaging space. At the same time, this symmetrical and parallel arrangement structure is extremely stable, so that the pressure applied by the superimposed foam padding or carton cover can be evenly distributed to the rigid frame of the main unit box 5, effectively avoiding product damage that may be caused by excessive local pressure. It is particularly suitable for long-distance logistics transportation scenarios that require multi-layer stacking.

[0039] Example 4: The difference between this embodiment and embodiment 3 lies in the arrangement of the table legs 3. The table legs 3 are arranged around the main unit case 5, and instead of being grouped and placed on either side, they are arranged in a U-shape around the main unit case 5. This design allows the user to easily access any table leg 3 without moving the main unit case 5 when opening the case, making operation more convenient.

[0040] This application utilizes a split design where the inner bowl 17 of the leg is pre-embedded in the table leg 3 and the table leg connector 10 is fixed to the main unit frame. Combined with a core structure that uses a single screw for vertical fastening, this completely changes the traditional complex installation mode involving multiple screws and angles. During installation, simply align the table leg screw 12 inside the top of the table leg 3 with the screw hole at the bottom 14 of the connector, and rotate the table leg 3 to complete the fastening. This reduces the installation time from tens of minutes to tens of seconds, greatly improving the user experience and lowering the installation threshold. Furthermore, the quick-installation structure means that the table leg 3 and the main unit 5 can be packaged as a single unit, significantly reducing the packaging volume, storage space, and logistics costs, and enhancing the product's market competitiveness.

[0041] The table leg connector 10 forms a multi-layered, multi-directional connection and fixation with the small column 6 and iron plate 4 through the corner connector 13, plastic liner 9, and other components (such as the bottom fixing screw 15 in the vertical direction and the connector fixing screw 11 in the horizontal direction). The force transmission path is clear and reasonable, effectively avoiding the shaking problem caused by single-point force. In addition, the plastic liner 9 not only plays a connecting role, but also acts as an elastic damping component, which can effectively absorb and buffer the vibration generated during use, prevent the screws from loosening due to vibration, and ensure quiet and stable long-term use.

[0042] Compared to traditional welded or unibody structures that require replacement of the entire unit when partial damage occurs, the detachable design of this application enables targeted repairs, requiring only the replacement of the smallest faulty unit. This effectively reduces the user's maintenance costs. Furthermore, the table legs 3, main frame, and connectors are all independent modules. When the table legs 3 or screws are damaged, users can unscrew the nuts and replace them themselves without the need for professional tools or technicians. This greatly simplifies the after-sales maintenance process and saves time and labor costs.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quick-release leg for a mahjong table, comprising table legs (3) and a main frame, the main frame comprising an iron plate (4), a frame (2) and small uprights (6), characterized in that: It also includes a table leg connector (10) fixed to the main frame and a leg bowl (17) embedded and fixed in the top cavity of the table leg (3). The center of the leg bowl (17) is provided with a first thread structure, which includes a table leg screw (12) and a first thread hole. The bottom of the table leg connector (10) is provided with a connector bottom (14) with a second thread hole. The table leg (3) is fixed to the main frame by passing through the second threaded hole in the bottom of the connector (14) and the first threaded hole in the center of the inner bowl (17) of the leg from top to bottom with the table leg screw (12).

2. The quick-release leg for a mahjong table according to claim 1, characterized in that: The main frame includes an iron plate (4) and a frame (2) surrounding the iron plate (4). The bottom of the iron plate (4) is provided with a main unit box (5) for accommodating the main unit, and small columns (6) extending upward are fixedly welded to the four corners of the iron plate (4).

3. The quick-release legs for a mahjong table according to claim 1, characterized in that: The table leg connector (10) includes a hollow cylinder (101) and a corner connector (13). The bottom of the cylinder (101) is provided with a connector bottom (14). At least a part of the side of the corner connector (13) is connected to the cylinder (101), and a fixing plate (102) extends horizontally from its bottom.

4. The quick-release leg for a mahjong table according to claim 3, characterized in that: The corner connector (13) is integrally formed or fixedly connected to the outer wall of the cylinder (101), so that the top surface of the corner connector (13) is flush with the top surface of the cylinder (101).

5. The quick-release leg for a mahjong table according to claim 3, characterized in that: The number of borders (2) is 4, and they are interlocked to form a square frame. The inner side of the borders (2) is provided with inwardly extending border connection points (7), and the bottom of the square frame interlocking point is provided with a space to accommodate a cylinder (101).

6. The quick-release leg for a mahjong table according to claim 5, characterized in that: A plastic liner (9) is provided between the small column (6) and the corner connector (13). The frame connection point (7) is connected to the top of the plastic liner (9) by the frame fixing screw (8), thereby fixing the frame (2).

7. The quick-release leg for a mahjong table according to claim 3, characterized in that: The fixing plate (102) is fixedly connected to the iron plate (4) from below by bottom fixing screws (15).

8. The quick-release legs for a mahjong table according to claim 3, characterized in that: The outer diameter of the top opening of the table leg (3) is adapted to the inner diameter of the cylinder (101) of the table leg connector (10), and the top of the table leg (3) is nested outside the cylinder (101).

9. The quick-release leg for a mahjong table according to claim 1, characterized in that: The first threaded structure also includes a bowl-bottom nut (18) screwed onto the end screw of the table leg screw (12), the bowl-bottom nut (18) abutting against the bottom of the inner bowl (17) of the leg and locking the table leg screw (12) in place.

10. A quick-release leg for a mahjong table according to claim 1, characterized in that: The first threaded structure also includes a welded tube (19) pre-embedded and fixed in the center of the inner bowl (17) of the leg, and the table leg screw (12) is screwed into the welded tube (19) and fixedly connected to the welded tube (19) by welding.

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