A tendon groove embedded type side wall positioning anti-cracking mahjong

Abstract

The utility model belongs to mahjong tile technical field, specifically discloses a muscle groove inlaying formula side wall positioning anti -cracking mahjong tile, including bottom blank and cover, cover welding cover is formed at the glue filling groove opening of bottom blank top place and forms the glue filling cavity, the glue filling cavity contains the filling body and magnet in accommodation, the magnet inlays the filling body one end towards character surface, the outer wall of filling body is equipped with the positioning groove that corresponds with a plurality of positioning muscle in the glue filling groove inner wall one -to -one matching, the glue filling cavity is filled with adhesive and solidifies completely. The utility model discloses the positioning groove of positioning muscle and the outer wall of filling body are matched through setting up in the glue filling groove inner wall, and this muscle groove inlaying design strengthens the connecting strength between filling body and bottom blank, and the bottom blank, magnet, filling body and cover integrated fixed connection are combined welding and glue filling solidification process, realize more stable and durable connecting mode, not only can improve mahjong tile's overall structural strength, prevent cracking, simplify manufacturing assembly process, still can ensure long -term use's stability and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of mahjong tile technology, and in particular relates to a ribbed and grooved sidewall positioning anti-crack mahjong tile. Background Technology

[0002] Mahjong, as a traditional Chinese intellectual entertainment tool, directly impacts user experience and product lifespan through its structural design. In existing technologies, various technical solutions have been adopted to ensure stable connections between the internal components of mahjong tiles, particularly reliable positioning between the cover and the base, preventing cracking during use. One widely used existing technology involves designing multiple vertically extending positioning posts along the edge of the cover. These posts are designed to engage with corresponding positioning grooves on the outer wall of the filler, achieving mechanical positioning between the filler and the cover through this post-groove fit. However, this design has significant limitations:

[0003] Structural fragility: As a slender structure, the positioning post is easily subjected to external impact during frequent use, handling, or accidental drops of mahjong tiles. The positioning post is prone to elastic deformation or even breakage due to stress concentration. Once the positioning post is damaged, the positioning relationship between the cover and the filler is disrupted, causing the mahjong tile to crack and seriously affecting its normal use.

[0004] Manufacturing and assembly complexity: The precise matching of the positioning pins and positioning slots requires high machining accuracy, increasing the difficulty and cost of the manufacturing process. Furthermore, during assembly, it is essential to ensure that each positioning pin is accurately embedded in its corresponding positioning slot, a process that is not only time-consuming but also prone to errors, hindering large-scale automated production.

[0005] Long-term stability issues: Even if the positioning pin and positioning groove fit well during initial assembly, as the usage time increases, factors such as material aging and wear may gradually weaken the interlocking force between them, eventually causing the cover to fall off.

[0006] Therefore, the inventors dedicated themselves to designing a mahjong set to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a ribbed and grooved sidewall positioning anti-crack mahjong tile, which can not only improve the overall structural strength of the mahjong tile and simplify the manufacturing and assembly process, but also ensure the stability and reliability of long-term use.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A type of anti-crack mahjong tile with ribbed interlocking sidewall positioning includes a base and a cover. The bottom surface of the base is its character side. The cover is welded to the top of the base to form a glue-filling cavity. The glue-filling cavity contains a filler and a magnet. The magnet is embedded in the end of the filler facing the character side. The inner wall of the glue-filling cavity is provided with multiple positioning ribs. The outer wall of the filler is provided with positioning grooves that correspond to the positioning ribs. The glue-filling cavity is filled with adhesive and cured to fix the base, the magnet, the filler, and the cover together.

[0010] As an improvement of the present invention, the ribbed groove interlocking sidewall positioning anti-crack mahjong tile, all the positioning grooves are distributed in a ring at intervals along the outer side wall of the filler, and the positioning ribs extend from the inner wall of the glue-filling groove into the corresponding positioning groove.

[0011] As an improvement of the ribbed and grooved sidewall positioning anti-crack mahjong tile of this utility model, each of the positioning ribs is an outer elongated strip and each of the positioning grooves is an inner elongated strip, and the positioning ribs and the positioning grooves are guided and assembled from top to bottom.

[0012] As an improvement of the ribbed interlocking sidewall positioning anti-crack mahjong tile of this utility model, the inner sidewall of the glue filling groove and the outer sidewall of the filler are both inclined outward in the vertical direction to form a demolding slope.

[0013] As an improvement of the ribbed and grooved sidewall positioning anti-crack mahjong tile of this utility model, the top of the base blank is provided with a positioning boss to prevent adhesive overflow. The positioning boss is arranged in a circle around the glue-filling groove. The bottom of the cover body is provided with an annular positioning groove, which cooperates with the positioning boss.

[0014] As an improvement of the present invention, the grooved interlocking sidewall positioning anti-crack mahjong tile has a side groove at the opening edge of the glue-filling groove, and a ring-shaped protrusion at the bottom of the cover, the protrusion being located inside the side groove.

[0015] As an improvement of the present invention, the sidewall of the grooved interlocking sidewall positioning anti-crack mahjong tile is inclined outward along the vertical direction.

[0016] As an improvement of the grooved interlocking sidewall positioning anti-crack mahjong tile of this utility model, the cover and the base are formed by ultrasonic welding to form a molten layer.

[0017] As an improvement of the present invention, the grooved interlocking sidewall positioning anti-crack mahjong tile has a groove at the bottom of the filler, and the magnet is located in the groove.

[0018] As an improvement of the grooved interlocking sidewall positioning anti-crack mahjong tile of this utility model, the top of the cover body is provided with at least one decorative cover.

[0019] Compared with existing technologies, the present invention's grooved interlocking sidewall positioning anti-crack mahjong tile, by setting positioning ribs on the inner wall of the glue-filling groove and matching the positioning grooves on the outer wall of the filler body, further enhances the connection strength between the filler body and the base plate. Combined with welding and glue-filling curing processes, the glue-filling cavity is filled with adhesive and cured, fixing the base plate, magnet, filler body, and cover body together, realizing the integrated fixed connection of each component. This solves the problem of hollow sounds caused by gaps inside the mahjong tile and abnormal noises caused by loose filler body. Welding the cover body to the base plate achieves a more stable and durable connection method, which not only improves the overall structural strength of the mahjong tile and prevents cracking, but also simplifies the manufacturing and assembly process and ensures long-term stability and reliability. Attached image description:

[0020] Figure 1 This is a three-dimensional exploded view of the ribbed and grooved sidewall positioning anti-crack mahjong tile according to the first embodiment of this utility model;

[0021] Figure 2 This is another exploded perspective view of the grooved interlocking sidewall positioning anti-crack mahjong tile according to the first embodiment of this utility model;

[0022] Figure 3 This is an enlarged cross-sectional view of the grooved interlocking sidewall positioning anti-crack mahjong tile according to the first embodiment of this utility model;

[0023] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a three-dimensional sectional enlarged view of the base blank in the first embodiment of this utility model;

[0025] Figure 6 This is a three-dimensional sectional enlarged view of the cover in the first embodiment of this utility model;

[0026] Figure 7 yes Figure 6 Enlarged view of point B in the middle;

[0027] Figure 8 This is a three-dimensional enlarged view of the cover and the filling body in the first embodiment of this utility model;

[0028] Figure 9 This is a three-dimensional exploded view of the ribbed and grooved sidewall positioning anti-crack mahjong tile according to the second embodiment of this utility model;

[0029] Figure 10This is another exploded perspective view of the grooved interlocking sidewall positioning anti-crack mahjong tile according to the second embodiment of this utility model;

[0030] Figure 11 This is an enlarged cross-sectional view of the ribbed and grooved sidewall positioning anti-crack mahjong tile according to the second embodiment of this utility model.

[0031] Illustration:

[0032] 1. Base blank; 11. Character surface; 12. Glue filling groove; 121. Positioning rib; 13. Side groove; 14. Positioning boss; 15. Glue filling cavity; 2. Magnet; 3. Filler; 31. Embedded groove; 32. Positioning groove; 4. Cover body; 41. Protrusion; 42. Positioning groove; 43. Melting layer; 5. Decorative cover. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0034] Example 1

[0035] Reference Figures 1 to 8 A type of anti-crack mahjong tile with ribbed interlocking sidewall positioning includes a base 1, a cover 4, a filler 3, and a magnet 2. The bottom surface of the base 1 is its character surface 11. The cover 4 is welded to the opening of the glue-filling groove 12 on the top of the base 1 to form a glue-filling cavity 15. The filler 3 and the magnet 2 are both housed in the glue-filling cavity 15. The magnet 2 is embedded in the end of the filler 3 facing the character surface 11. The inner wall of the glue-filling groove 12 is provided with a plurality of positioning ribs 121. The outer wall of the filler 3 is provided with positioning grooves 32 that correspond one-to-one with the positioning ribs 121. The glue-filling cavity 15 is filled with adhesive and cured to fix the base 1, magnet 2, filler 3, and cover 4 together.

[0036] Reference Figures 1 to 5 The bottom of the base plate 1 has characters on the character surface 11. The base plate 1 is rectangular shell in shape and its top is hollowed out to form a glue-filling groove 12. The inner sidewall of the glue-filling groove 12 is inclined outward along the vertical direction (defined in this utility model: when a mahjong tile is placed stably on a horizontal surface, the direction perpendicular to the horizontal surface is the "vertical direction" referred to in this utility model) to form a demolding slope. All the positioning ribs 121 are distributed at intervals on each inner sidewall of the glue-filling groove 12. Each positioning rib 121 extends from the inner sidewall of the glue-filling groove 12 into the corresponding positioning groove 32. Each positioning rib 121 is an outer conical strip. A side groove 13 is provided at the opening edge of the glue-filling groove 12. The sidewall of the side groove 13 is inclined outward along the vertical direction. The top of the base plate 1 is provided with a positioning boss 14 to prevent the adhesive from overflowing. The positioning boss 14 is arranged in a circle around the glue-filling groove 12.

[0037] Reference Figure 1 , Figure 2 , Figure 3 and Figure 8 The filler 3 is rectangular and located in the glue-filling groove 12 of the base blank 1. The outer side wall of the filler 3 is inclined outward in the vertical direction to form a demolding slope. All positioning grooves 32 are distributed in a ring along the outer side wall of the filler 3. Each positioning groove 32 is an inner cone-shaped strip. The positioning rib 121 and the cone-shaped structure of the positioning groove 32 are guided and assembled from top to bottom. The bottom of the filler 3 is provided with an insert groove 31.

[0038] Reference Figure 1 and Figure 2 Magnet 2 is block-shaped and located within groove 31. In automatic mahjong machines, four rhomboid or rectangular magnetic blocks are typically placed on the large iron plate, whose magnetic poles repel the magnetic poles of the mahjong tiles' magnet 2. When the mahjong tiles are randomly distributed on the shuffling plate, the repulsive force pushes all the tiles to flip so that the face-up is facing up, ensuring that the tiles are neat and uniform. This process requires no manual intervention, significantly improving shuffling efficiency. Simultaneously, three to four magnetic blocks are configured on the shuffling wheel or suction wheel, whose magnetic poles attract the mahjong tiles' magnet 2. When the tiles pass under the suction wheel, the magnetic force attracts the tiles and sends them onto the conveyor belt, achieving automated tile loading.

[0039] Reference Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 The cover 4 is plate-shaped, and the bottom of the cover 4 has an annular positioning groove 42. The positioning groove 42 cooperates with the positioning boss 14 so that the cover 4 and the base 1 are positioned and connected. The bottom of the cover 4 has an annular protrusion 41. The positioning groove 42 is arranged around the protrusion 41. The protrusion 41 is located in the side groove 13, which helps to strengthen the curing connection strength between the cover 4 and the base 1.

[0040] Reference Figure 3 and Figure 4 The cover 4 and the base 1 are ultrasonically welded to form a molten layer 43. The molten layer 43 is located outside the positioning boss 14. The molten layer 43 is a molecular bonding layer formed by melting the contact surface of the base 1 and the cover 4 due to high-frequency vibration friction heat generation. Its characteristics are directly related to the welding strength and sealing performance. The cover 4 and the base 1 are connected by welding, which not only prevents the cover 4 from falling off during shuffling, but also prevents water from seeping into the mahjong tiles, extending the service life of the mahjong tiles. It is especially suitable for humid environments (such as bathrooms and outdoors).

[0041] The assembly process of this utility model of grooved interlocking sidewall positioning anti-crack mahjong tile is as follows:

[0042] Install the magnet 2 in the groove 31 at the bottom of the filler 3, and then place the filler 3 with the magnet 2 installed into the glue-filling groove 12 at the top of the base plate 1. At this time, the multiple positioning ribs 121 on the inner side wall of the base plate 1 and the multiple positioning grooves 32 on the outer side wall of the filler 3 correspond one-to-one for guidance and positioning connection.

[0043] The glue filling groove 12 of the base blank 1 is filled with adhesive. At this time, the filler 3 and the magnet 2 are both located in the adhesive. The cover 4 is then covered. The protrusion 41 on the cover 4 is located in the side groove 13 of the base blank 1. The positioning boss 14 of the base blank 1 is located in the positioning groove 42 of the cover 4. At this time, the cover 4 is limited and connected to the positioning boss 14 of the base blank 1 through the positioning groove 42.

[0044] The cover 4, the base 1, the filler 3, and the magnet 2 are all integrally fixed and connected by a cured adhesive;

[0045] An annular molten layer 43 is formed between the cover 4 and the base blank 1 by ultrasonic welding.

[0046] Example 2

[0047] Reference Figures 9 to 11 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: in this embodiment, at least one decorative cover 5 is superimposed on the top of the cover 4, and a decorative element can be provided between the cover 4 and the decorative cover 5. This decorative element can be a printed pattern, engraved pattern, spray-painted pattern, photograph, name, text, and / or symbol. Thus, the mahjong tiles of this invention can form customized or unique mahjong tiles with advertising effects, which helps to improve product diversity. Of course, the decorative element can also be engraved or embedded in the decorative cover 5, especially suitable for engraved patterns formed by laser engraving. The other structures of the mahjong tiles in this embodiment are the same as those in the first embodiment, and will not be described further here.

[0048] The grooved, interlocking, sidewall-positioning, crack-resistant mahjong tile of this invention has the following beneficial technical effects:

[0049] (1) Integrated Fixing of Multiple Components: After the cover 4 is welded to the top of the base 1 to form a glue-filling cavity 15, the filler 3 and magnet 2 are housed in it and filled with adhesive for curing. This achieves integrated fixing of multiple key components, including the base 1, magnet 2, filler 3, and cover 4, solving the problems of hollow sounds caused by gaps inside the mahjong tile and abnormal noises caused by loose filler. This integrated fixing method makes all parts of the mahjong tile a tightly integrated whole. Compared with the traditional structure, it greatly enhances the structural strength of the mahjong tile and makes it less likely for parts to loosen or separate during use, effectively improving the durability and service life of the mahjong tile.

[0050] (2) Sidewall Rib Groove Fitting and Reinforcement: The positioning ribs 121 on the inner wall of the glue-filling groove 12 correspond one-to-one with the positioning grooves 32 on the outer wall of the filler 3. This rib groove fitting design provides precise mechanical positioning for the filler 3 before the adhesive cures, ensuring that the filler 3 is accurately positioned within the glue-filling cavity 15. After the adhesive cures, the rib groove fitting structure and the cured adhesive work together to further enhance the connection strength between the filler 3 and the base plate 1, effectively fixing the filler 3 from the sidewall direction and preventing horizontal movement or shaking during use, thereby improving the stability of the internal structure of the mahjong tile.

[0051] (3) Precise Positioning and Embedding: The magnet 2 is embedded in the end of the filler 3 facing the character surface 11. Combined with the precise positioning of the filler 3 within the glue-filling cavity 15 through the rib groove, the position of the magnet 2 within the mahjong tile can also be precisely controlled. This ensures that the magnet position on each mahjong tile is consistent. When used in equipment such as automatic mahjong tables, it ensures that the mahjong tiles are accurately attracted and arranged, improving the working efficiency and stability of the automatic mahjong table.

[0052] (4) Stable fixing to prevent cracking: After the magnet 2 is embedded in the filler 3, it is firmly fixed inside the mahjong tile through the overall fixing connection between the filler 3 and the base 1 and the cover 4. This multiple fixing method effectively prevents the magnet 2 from cracking due to vibration, collision and other reasons during use.

[0053] (5) Welding the cover 4 to ensure airtightness: The cover 4 is welded to the opening of the glue-filling groove 12 on the top of the base plate 1. This welding process can form a good sealing effect, ensuring that there will be no glue leakage in the glue-filling cavity 15 during the glue filling process. At the same time, the sealed glue-filling cavity 15 also provides better protection for the internal components, preventing external factors such as dust and moisture from entering the mahjong tile and affecting its performance and service life.

[0054] (6) The rib and groove design facilitates assembly: The design of the positioning rib 121 and positioning groove 32 facilitates the assembly process of mahjong tiles. During production, operators can quickly and accurately place the filler 3 into the glue-filling cavity 15, aligning the positioning rib 121 with the positioning groove 32 to achieve precise positioning of the filler 3. This not only improves assembly efficiency and reduces production costs, but also reduces product quality problems caused by assembly errors, ensuring the consistency and quality stability of the mahjong tiles.

[0055] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A crack-preventing mahjong with a side wall positioned by a groove-inlaid side wall, comprising a bottom blank and a cover, the bottom surface of the bottom blank being a character surface, characterized in that, The cover is welded to the opening of the glue-filling groove on the top of the base blank to form a glue-filling cavity. The glue-filling cavity contains a filler and a magnet. The magnet is embedded in the end of the filler facing the character surface. The inner wall of the glue-filling groove is provided with multiple positioning ribs. The outer wall of the filler is provided with positioning grooves that correspond to the positioning ribs one by one. The glue-filling cavity is filled with adhesive and cured to fix the base blank, the magnet, the filler and the cover to a fixed connection.

2. The rib-and-slot fitting type sidewall positioning anti-cracking mahjong tile according to claim 1, characterized in that, All the positioning grooves are distributed in a ring at intervals along the outer side wall of the filler, and the positioning ribs extend from the inner wall of the glue-filling groove into the corresponding positioning groove.

3. The rib-and-slot fitting type sidewall positioning anti-cracking mahjong tile according to claim 1, characterized in that, Each of the positioning ribs is an outer elongated strip, and each of the positioning grooves is an inner elongated strip. The positioning ribs and the positioning grooves are guided and assembled from top to bottom.

4. The groove-inlaid type side wall positioning anti-cracking mahjong tile according to claim 1, characterized in that, The inner wall of the glue-filling tank and the outer wall of the filler are both inclined outward in the vertical direction to form a demolding slope.

5. The rib-and-slot fitting type sidewall positioning anti-cracking mahjong tile according to claim 1, characterized in that, The top of the base plate is provided with a positioning boss to prevent adhesive from overflowing. The positioning boss is arranged in a circle around the glue-filling groove. The bottom of the cover body has an annular positioning groove on the cover surface, and the positioning groove cooperates with the positioning boss.

6. The groove-inlaid type side wall positioning anti-cracking mahjong tile according to claim 1, characterized in that, The opening edge of the glue-filling tank is provided with a side groove, and the bottom of the cover is provided with a ring-shaped protrusion, which is located inside the side groove.

7. The rib-and-slot fitting type sidewall positioning anti-cracking mahjong tile according to claim 6, characterized in that, The sidewalls of the side grooves are inclined outwards in a vertical direction.

8. The groove-inlay type sidewall positioning anti-cracking mahjong tile according to claim 1, characterized in that, The cover and the base are ultrasonically welded to form a molten layer.

9. The groove-inlay type sidewall positioning anti-cracking mahjong set according to claim 1, characterized in that, The bottom of the filler is provided with a groove, and the magnet is located in the groove.

10. The ribbed interlocking sidewall positioning anti-crack mahjong tile according to claim 1, characterized in that, The top of the cover is covered with at least one decorative cover.

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