A self-locking structure

Abstract

The utility model discloses a self -locking structure, including mutually inserting and constituting the self -locking structure of sub -module and female module, and the female module includes from top to bottom assembly's upper cover, activity disc, spring and base, the sub -module is disc structure, and the bottom surface fixedly arranged with the symmetry of a pair of arc -shaped insert column, the upper cover is disc structure, and the cross section radius is less than the radius of sub -module, the upper cover is provided with the symmetry of a pair of arc -shaped insert groove, the arc -shaped insert groove and arc -shaped insert column adapt, constitute and plug in structure, the upper cover bottom surface center fixedly set up the round insert column of empty core, the lower part both sides of round insert column are provided with the vertical section gap, and the lower part horizontal section shape is equilateral circle arc shape. This self -locking structure, self -locking is convenient, and spring passes through the connection activity disc and base, realizes activity disc right -hand rotation 45 degrees after, and hole position is completely open, and sub -module can be from female module and come out or insert. After loosening hand, realizes activity disc automatic reset under the action of elasticity, and locks the hole position.

Description

Technical Field

[0001] This utility model relates to the field of connection structure technology, specifically a self-locking structure. Background Technology

[0002] With the rapid development of technology, the tech-beauty industry has emerged as a new sector. Fashionable IT brands are diversifying with the market. In response to the increasing number of mobile phone brands and functions, phone cases are becoming more diverse, categorized by material such as PC cases, leather, silicone, fabric, hard plastic, leather cases, tempered glass metal cases, soft plastic, velvet, and silk. Phone cases not only enhance the appearance of phones but also protect them from drops, scratches, water, and shocks.

[0003] To enhance aesthetics and entertainment value, small decorative accessories or figurines are often added to phone cases. These accessories or figurines are typically connected using direct adhesive. While this method provides sufficient stability and sturdiness, it makes it inconvenient to replace the accessories or figurines. If a replacement is desired, the entire phone case must be replaced, which is somewhat cumbersome. Therefore, we propose a self-locking structure that allows for the separate securing of the phone case and the accessories or figurines. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a self-locking structure. The sub-module and the main module, which are fixedly connected to the assembled mobile phone case and accessories, form a mutually locked connection structure. While keeping the connection between the mobile phone case and accessories firm, the accessories can be easily replaced, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-locking structure, comprising a sub-module and a mother module that are interlocked to form the self-locking structure. The mother module includes a top cover, a movable disc, a spring, and a base assembled from top to bottom. The sub-module is a disc structure with a pair of symmetrical arc-shaped posts fixedly arranged on its bottom surface. The top cover is a disc structure with a cross-sectional radius smaller than that of the sub-module. The top cover has a pair of symmetrical arc-shaped slots that are adapted to the arc-shaped posts to form a plug-in structure. A hollow circular post is fixedly arranged at the center of the bottom surface of the top cover. The circular post has vertical notches on both sides of its lower part, and the lower cross-section is an equilateral circular arch. The movable disk has a circular structure with a circular insertion hole at its center. The circular insertion hole is adapted to a circular insertion post to form a plug-in structure. Near the edge of the movable disk, there is a pair of symmetrical arc-shaped limiting grooves. Each arc-shaped limiting groove includes a wide limiting groove and a narrow limiting groove connected to it. The position of the wide limiting groove corresponds to the arc-shaped slot. The arc length of the arc-shaped limiting groove is greater than the arc length of the arc-shaped slot. Circular protrusions and square protrusions are respectively provided near the wide limiting groove of the pair of arc-shaped limiting grooves. The circular protrusions and square protrusions are fixedly connected to the bottom surface of the movable disk. The spring has a circular hook at one end and an L-shaped hook at the other end, with a circular limiting hole in the middle. The circular limiting hole engages with a circular post passing through a circular insertion hole, and the circular hook engages with a circular protrusion. The base is a disc structure with a concave top surface. The edge of the top surface of the base has a pair of symmetrical, upward-facing arc-shaped grooves. During assembly, the arc-shaped post passes through the arc-shaped slot, the arc-shaped limiting groove, and the arc-shaped bottom groove in sequence. The center of the top surface of the base has an upward-facing circular slot, the internal slot shape of which is circular. The lower part of the insert is fitted with an equilateral arch. The circular insert passes through the circular insertion hole, the circular limiting hole of the spring, and the circular slot in sequence. The top surface of the base is provided with a long limiting block and a short limiting block connected to the edge. An inclined limiting block is provided in a straight line with the short limiting block. An I-shaped channel is formed between the short limiting block and the inclined limiting block. During assembly, the lateral section of the L-shaped hook is locked in the I-shaped channel to form a locking structure. The outer side of the long limiting block abuts against the square protrusion. The range of motion of the square protrusion is between the arc-shaped bottom groove and the long limiting block.

[0006] Furthermore, the sub-module has a downward-pointing lower edge, and the arc-shaped inserts are symmetrically arranged on the bottom surface near the edge.

[0007] Furthermore, the vertical cross-section of the arc-shaped insert is L-shaped, and a vertically outward extension section is provided at the bottom.

[0008] Furthermore, the bottom edge of the submodule is provided with two symmetrically arranged arc-shaped grooves.

[0009] Furthermore, both the top and bottom surfaces of the movable disk are concave.

[0010] Furthermore, the upper cover is fitted onto the top surface of the movable plate, and after assembly, the upper cover is flush with the edge of the movable plate.

[0011] Furthermore, an operating handle that can drive the movable disc to rotate is fixedly provided on one side of the edge of the movable disc.

[0012] Furthermore, the long limiting block, short limiting block, oblique limiting block, and base edge form a fan-shaped structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This self-locking structure has the following advantages: 1. Convenient self-locking: The spring connects the movable plate and the base, allowing the hole to be fully opened after the movable plate rotates 45 degrees to the right, so that the sub-module can be removed from or inserted into the mother module; after releasing, the movable plate automatically resets under the action of the spring force, locking the hole.

[0014] 2. The structure is simple and easy to operate. It can be used to easily replace decorative accessories on mobile phone cases, and can also be used for connection and locking of other structures. Attached Figure Description

[0015] Figure 1 This is a top view of the structure of this utility model; Figure 2 This is a bottom view of the structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention; Figure 5 This is a bottom view of the sub-module of this utility model. Figure 6 This is a bottom view of the top cover of this utility model. Figure 7 This is a top view of the structure of the top cover of this utility model; Figure 8 This is a top view of the movable disc of this utility model. Figure 9 This is a bottom view of the movable disc of this utility model. Figure 10 This is a schematic diagram of the structure of the spring of this utility model; Figure 11 This is a three-dimensional structural diagram of the base of this utility model.

[0016] In the diagram: 1 Sub-module, 11 Arc-shaped groove, 12 Arc-shaped insert, 2 Top cover, 21 Arc-shaped slot, 22 Circular insert, 3 Movable plate, 31 Circular insertion hole, 32 Arc-shaped limiting groove, 33 Operating handle, 34 Circular protrusion, 35 Square protrusion, 4 Spring, 41 Circular hook, 42 ​​L-shaped hook, 5 Base, 51 Arc-shaped bottom groove, 52 Circular slot, 53 Large limiting block, 54 Small limiting block, 55 Angled limiting block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-11 This embodiment provides a technical solution: a self-locking structure, including a sub-module 1 and a mother module that are interlocked to form the self-locking structure. The mother module includes an upper cover 2, a movable disk 3, a spring 4, and a base 5 assembled from top to bottom. The sub-module 1 is a disk structure, and a pair of symmetrical arc-shaped inserts 12 are fixedly provided on the bottom surface. The upper cover 2 is a disk structure, and the cross-sectional radius is smaller than the radius of the sub-module 1. A pair of symmetrical arc-shaped slots 21 are provided on the upper cover 2. The arc-shaped slots 21 are adapted to the arc-shaped inserts 12 to form an insertion and removal structure. A hollow circular insert 22 is fixedly provided at the center of the bottom surface of the upper cover 2. The circular insert 22 has vertical cut notches on both sides of the lower part, and the lower cross-section is an equilateral circular arch. The movable disk 3 has a circular structure and a circular insertion hole 31 is provided at the center. The circular insertion hole 31 is adapted to the circular insertion post 22 to form a plug-in structure. Near the edge of the movable disk 3, there is a pair of symmetrical arc-shaped limiting grooves 32. The arc-shaped limiting groove 32 includes a wide limiting groove and a narrow limiting groove connected to it. The position of the wide limiting groove corresponds to the arc-shaped slot 21. The arc length of the arc-shaped limiting groove 32 is greater than the arc length of the arc-shaped slot 21. Circular protrusions 34 and square protrusions 35 are respectively provided near the wide limiting groove of the pair of arc-shaped limiting grooves 32. The circular protrusions 34 and square protrusions 35 are fixedly connected to the bottom surface of the movable disk 3. Spring 4 has a circular hook 41 at one end and an L-shaped hook 42 at the other end, with a circular limiting hole in the middle. The circular limiting hole is fitted with a circular post 22 that passes through the circular insertion hole 31, and the circular hook 41 is fitted with a circular protrusion 34. Spring 4 provides elastic force. When the operating handle 33 is turned, spring 4 is compressed. After being released, the operating handle 33 is automatically reset under the action of elastic force. The base 5 has a disc structure with a concave top surface. The top edge of the base 5 has a pair of symmetrical upward-facing arc-shaped bottom grooves 51. During assembly, the arc-shaped post 12 passes through the arc-shaped slot 21, the arc-shaped limiting groove 32, and the arc-shaped bottom groove 51 in sequence. The center of the top surface of the base 5 has an upward-facing circular slot 52. The internal slot of the circular slot 52 is an equilateral arch shape that fits the lower part of the circular post 22. The circular post 22 passes through the circular insertion hole 31 and the circular limiting hole of the spring 4 in sequence and is inserted into the circular slot 52. The top edge of the base 5 is provided with a long limiting block 53 and a short limiting block 54 connected to the edge. An inclined limiting block 55 is provided in a straight line with the short limiting block 54. An I-shaped channel is formed between the short limiting block 54 and the inclined limiting block 55. During assembly, the transverse section of the L-shaped hook 42 is locked in the I-shaped channel to form a locking structure. The outer side of the long limiting block 53 abuts against the square protrusion 35. The range of motion of the square protrusion 35 is between the arc-shaped bottom groove 51 and the long limiting block 53.

[0019] The submodule 1 has a downward-facing lower edge, and the arc-shaped insert 12 is symmetrically arranged on the bottom surface near the edge. The vertical cross-section of the arc-shaped insert 12 is L-shaped, and the bottom has a vertically outward extension. The bottom edge of the submodule 1 has two symmetrically arranged arc-shaped grooves 11. The top and bottom surfaces of the movable disk 3 are both concave. The top cover 2 is assembled on the top surface of the movable disk 3, and after assembly, the top cover 2 is flush with the edge of the movable disk 3. An operating handle 33 that can push the movable disk 3 to rotate is fixedly arranged on one side of the edge of the movable disk 3. The long limit block 53, the short limit block 54, the inclined limit block 55 and the edge of the base 5 form a fan-shaped structure.

[0020] The working principle of the self-locking structure provided by this utility model is as follows: During assembly, the circular hook 41 of the spring 4 is sleeved with the circular protrusion 34, and then the movable plate 3 is connected with the base 5. The L-shaped hook 42 of the spring 4 is locked in the I-shaped channel between the short limiting block 54 and the inclined limiting block 55. The arc-shaped slot 21 of the upper cover 2 is aligned with the arc-shaped limiting groove 32 of the movable plate 3 and the arc-shaped bottom groove 51 of the base 5. The circular insert 22 of the upper cover 2 passes through the circular insert hole 31, the circular limiting hole of the spring 4 and the circular slot 52 in sequence and is inserted into the circular slot. In this way, the mother module is assembled. When submodule 1 needs to be installed, turn the operating handle 33 to the right by 45 degrees. The wide limiting groove section of the arc-shaped limiting groove 32 aligns with the arc-shaped slot 21 of the upper cover 2 and the arc-shaped bottom groove 51 of the base 5 (during this process, the circular hook 41 rotates with the circular slot 52, compressing the spring 4). Insert the arc-shaped insert 12 of submodule 1 through the arc-shaped slot 21, the arc-shaped limiting groove 32, and the arc-shaped bottom groove 51 in sequence. Then release the operating handle 33. The spring 4 automatically returns to its original shape under the action of elasticity, causing the operating handle 33 to rotate 45 degrees to the left. The narrow limiting groove section of the arc-shaped limiting groove 32 aligns with the arc-shaped slot 21 of the upper cover 2 and the arc-shaped bottom groove 51 of the base 5. The arc-shaped insert 12, due to its vertically outward extension at the bottom, forms a locking structure with the arc-shaped limiting groove 32. To unlock, the operating handle 33 is turned 45 degrees to the right. The wide limiting groove section of the arc-shaped limiting groove 32 aligns with the arc-shaped slot 21 of the upper cover 2 and the arc-shaped bottom groove 51 of the base 5. Once unlocked, the arc-shaped insert 12 can be removed, and the sub-module 1 detaches from the parent module. Then, the operating handle 33 is released, and the spring 4 automatically returns to its original state under the action of elasticity, causing the operating handle 33 to rotate 45 degrees to the left. The narrow limiting groove section of the arc-shaped limiting groove 32 aligns with the arc-shaped slot 21 of the upper cover 2 and the arc-shaped bottom groove 51 of the base 5.

[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A self-locking structure, characterized in that: The system includes a sub-module (1) and a mother module that are interlocked to form a self-locking structure. The mother module includes an upper cover (2), a movable disc (3), a spring (4), and a base (5) assembled from top to bottom. The sub-module (1) is a disc structure with a pair of symmetrical arc-shaped inserts (12) fixedly arranged on its bottom surface. The upper cover (2) is a disc structure with a cross-sectional radius smaller than that of the sub-module (1). The upper cover (2) is provided with a pair of symmetrical arc-shaped slots (21). The arc-shaped slots (21) are adapted to the arc-shaped inserts (12) to form a plug-in structure. A hollow circular insert (22) is fixedly arranged at the center of the bottom surface of the upper cover (2). The circular insert (22) has vertical cut notches on both sides at the bottom and the lower cross-section is an equilateral circular arch. The movable disk (3) has a circular structure and a circular insertion hole (31) is provided at the center. The circular insertion hole (31) is adapted to the circular insertion post (22) to form a plug-in structure. The movable disk (3) has a pair of symmetrical arc-shaped limiting grooves (32) near the edge. The arc-shaped limiting groove (32) includes a wide limiting groove and a narrow limiting groove connected to it. The position of the wide limiting groove corresponds to the arc-shaped slot (21). The arc length of the arc-shaped limiting groove (32) is greater than the arc length of the arc-shaped slot (21). A circular protrusion (34) and a square protrusion (35) are respectively provided near the wide limiting groove of the pair of arc-shaped limiting grooves (32). The circular protrusion (34) and the square protrusion (35) are fixedly connected to the bottom surface of the movable disk (3). The spring (4) has a circular hook (41) at one end and an L-shaped hook (42) at the other end, and a circular limiting hole in the middle. The circular limiting hole is fitted with a circular post (22) that passes through the circular insertion hole (31), and the circular hook (41) is fitted with a circular protrusion (34). The base (5) is a disc structure with a concave top surface. The top edge of the base (5) has a pair of symmetrical upward-facing arc-shaped bottom grooves (51). During assembly, the arc-shaped post (12) passes through the arc-shaped slot (21), the arc-shaped limiting groove (32), and the arc-shaped bottom groove (51) in sequence. The center of the top surface of the base (5) has an upward-facing circular slot (52). The internal slot shape of the circular slot (52) is similar to that of the circular post (22). 22) The lower part is adapted to an equilateral arch shape. The circular insert (22) passes through the circular insertion hole (31), the circular limiting hole of the spring (4) and the circular slot (52) in sequence. The top surface edge of the base (5) is provided with a long limiting block (53) and a short limiting block (54) connected to the edge. An inclined limiting block (55) is provided in a straight line with the short limiting block (54). An I-shaped channel is formed between the short limiting block (54) and the inclined limiting block (55). During assembly, the transverse section of the L-shaped hook (42) is stuck in the I-shaped channel to form a snap-fit ​​structure. The outer side of the long limiting block (53) abuts against the square protrusion (35). The range of motion of the square protrusion (35) is between the arc-shaped bottom groove (51) and the long limiting block (53).

2. The self-locking structure according to claim 1, characterized in that: The submodule (1) has a downward edge, and the arc-shaped insert (12) is symmetrically arranged on the bottom surface near the edge.

3. The self-locking structure according to claim 2, characterized in that: The arc-shaped insert (12) has an L-shaped vertical section and a vertically outward extension section at the bottom.

4. A self-locking structure according to claim 2, characterized in that: The bottom edge of the submodule (1) is provided with two symmetrically arranged arc-shaped grooves (11).

5. A self-locking structure according to claim 1, characterized in that: The top and bottom surfaces of the movable disc (3) are both concave.

6. A self-locking structure according to claim 5, characterized in that: The upper cover (2) is assembled on the top surface of the movable plate (3), and after assembly, the upper cover (2) is flush with the edge of the movable plate (3).

7. A self-locking structure according to claim 1, characterized in that: An operating handle (33) that can push the movable disk (3) to rotate is fixedly provided on one side of the edge.

8. A self-locking structure according to claim 1, characterized in that: The edges of the long limiting block (53), the short limiting block (54), the inclined limiting block (55), and the base (5) form a fan-shaped structure.

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