A buckle structure

Abstract

The utility model provides a kind of buckle structure, including upper cover, lower shell and silica gel sleeve, lower shell is placed in silica gel sleeve, and annular sealing ring is set in the silica gel sleeve of lower shell upper end, and the lower end of upper cover is provided with elastic vertical beam along annular interval, and elastic vertical beam is placed in lower shell, and with the inside sealing of annular sealing ring, elastic vertical beam is spaced apart from the inner wall of lower shell, and the interval is stress release cavity, the outside of part elastic vertical beam is provided with clasp, and lower shell is provided with the clamping groove matched with clasp.The utility model is fast in assembly rate, not easy to loosen under vibration environment, easy to disassemble, and repeated disassembly is not easy to cause sealing surface wear.

Description

Technical Field

[0001] This utility model relates to the field of electrical stimulation equipment technology, and in particular to a snap-fit ​​structure. Background Technology

[0002] The outer casing of electrical stimulation devices typically consists of an upper cover, a lower shell, and a rubber sleeve. The assembly of the upper cover and rubber sleeve often employs methods such as threaded tightening, integral pressing, adhesive bonding, screw fixing, or one-way snap fasteners, which have the following defects:

[0003] 1. Adhesive bonding: Difficult to disassemble, and the silicone layer is easily damaged during repair;

[0004] 2. One-way latch: It is fixed by only one side claw, which is easy to loosen under vibration.

[0005] 3. Low assembly and disassembly efficiency: The threaded structure requires multiple rotation operations, which is time-consuming and labor-intensive; the fit of the overall pressing structure can easily lead to deformation of the silicone sleeve edge after long-term use.

[0006] 4. Decreased sealing performance: Mechanical stress is concentrated on local contact surfaces, and repeated disassembly and assembly can easily cause wear on the sealing surfaces, leading to liquid leakage;

[0007] 5. Insufficient compatibility: The connection between the rigid top cover and the flexible silicone sleeve lacks deformation compensation capability and cannot adapt to material combinations with different coefficients of thermal expansion. Utility Model Content

[0008] This utility model proposes a snap-fit ​​structure that allows for fast assembly, is not easily loosened in a vibrating environment, is easy to disassemble, and is not prone to wear on the sealing surface even after repeated disassembly.

[0009] The technical solution of this utility model is implemented as follows: a snap-fit ​​structure includes an upper cover, a lower shell, and a silicone sleeve. The lower shell is placed inside the silicone sleeve. An annular sealing ring is provided inside the silicone sleeve at the upper end of the lower shell. An elastic vertical beam is provided at an annular interval at the lower end of the upper cover. The elastic vertical beam is placed inside the lower shell and seals against the inner side of the annular sealing ring. The elastic vertical beam is spaced apart from the inner wall of the lower shell. The interval is a stress relief cavity. Hooks are provided on the outer side of some of the elastic vertical beams. A groove that cooperates with the hooks is provided inside the lower shell.

[0010] Furthermore, the upper side of the annular sealing ring is provided with limit holes at an annular interval, and the lower end of the upper cover is provided with limit posts corresponding to the limit holes.

[0011] Furthermore, the lower end face of the hook is a guide slope.

[0012] Furthermore, the hooks are symmetrically arranged on the elastic vertical beams on both sides of the upper cover.

[0013] Furthermore, the hook is located at the lower end of the elastic vertical beam, and the hook, elastic vertical beam, and top cover are integrally formed.

[0014] Furthermore, the top cover and the limiting post are integrally molded structures.

[0015] Furthermore, the annular sealing ring and the silicone sleeve are integrally molded structures.

[0016] The beneficial effects of this utility model are:

[0017] The snap-fit ​​structure of this utility model, through the cooperation of elastic vertical beams, hooks and slots, allows for fast assembly, with the top cover assembly completed in 3 seconds. It is also not easy to loosen in a vibration environment, saving the cost of screws, glue and other materials.

[0018] The buckle structure of this utility model is easy to maintain. The top cover can be disassembled without tools and without damage. The stress relief cavity provides displacement space for the deformation of the elastic vertical beam. Through the deformation of the elastic vertical beam, the buckle is easy to disassemble, and repeated disassembly will not easily cause wear on the sealing surface.

[0019] This invention uses a limiting post embedded in a limiting hole to ensure a better sealing connection between the annular sealing ring and the elastic vertical beam, thus ensuring good sealing performance even after long-term use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic front view of the snap-fit ​​structure;

[0022] Figure 2 for Figure 1 A sectional view of AA;

[0023] Figure 3 This is a top view of the snap-fit ​​structure;

[0024] Figure 4 for Figure 3 Sectional view of BB;

[0025] Figure 5 This is a 3D view of the top cover;

[0026] Figure 6 This is a 3D view of the assembled silicone sleeve and lower shell.

[0027] 1. Top cover, 2. Bottom shell, 3. Silicone sleeve, 4. Annular sealing ring, 5. Elastic vertical beam, 6. Stress relief cavity, 7. Hook, 8. Slot, 9. Limiting hole, 10. Limiting post. Detailed Implementation

[0028] 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.

[0029] like Figure 1-6 As shown, a snap-fit ​​structure includes an upper cover 1, a lower shell 2, and a silicone sleeve 3. The lower shell 2 is placed inside the silicone sleeve 3. An annular sealing ring 4 is provided inside the silicone sleeve 3 at the upper end of the lower shell 2. The annular sealing ring 4 and the silicone sleeve 3 are integrally formed. The width of the annular sealing ring 4 is greater than the wall thickness of the lower shell 2.

[0030] An elastic vertical beam 5 is fixed at the lower end of the upper cover 1 along an annular interval. The elastic vertical beam 5 is placed inside the lower shell 2 and seals against the inner side of the annular sealing ring 4. The elastic vertical beam 5 is spaced apart from the inner wall of the lower shell 2. This space is a stress relief cavity 6. Hooks 7 are fixed on the elastic vertical beams 5 on both sides of the upper cover 1. The hooks 7 are located on the outer side of the lower end of the elastic vertical beam 5. The hooks 7 on both sides of the upper cover 1 are symmetrically arranged. The hooks 7, the elastic vertical beams 5 and the upper cover 1 are integrally formed. The lower end face of the hook 7 is a guide slope. The lower shell 2 is provided with a groove 8 that cooperates with the hook 7. The lower side of the groove 8 is an inclined bottom surface.

[0031] The upper side of the annular sealing ring 4 is provided with limit holes 9 at an annular interval, and the lower end of the upper cover 1 is provided with a limit post 10 corresponding to the limit hole 9. The upper cover 1 and the limit post 10 are integrally formed structures.

[0032] The method of using the buckle structure is as follows: Press the top cover 1 so that the hook 7 is engaged in the slot 8, the limiting post 10 is embedded in the limiting hole 9, and the elastic vertical beam 5 presses against the inner side of the annular sealing ring 4 to achieve the sealing installation of the top cover 1; when it is necessary to open the top cover 1, squeeze the two sides of the lower shell 2 to deform the elastic vertical beam 5, so that the hook 7 retracts inward and disengages from the slot 8, press one end of the edge of the top cover 1 to make the other end of the top cover 1 lift up, thereby opening the top cover 1.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A snap-fit ​​structure, comprising an upper cover, a lower shell, and a silicone sleeve, wherein the lower shell is placed inside the silicone sleeve, characterized in that: An annular sealing ring is provided inside the silicone sleeve at the upper end of the lower shell. An elastic vertical beam is provided at the lower end of the upper cover along the annular interval. The elastic vertical beam is placed inside the lower shell and seals against the inner side of the annular sealing ring. The elastic vertical beam is spaced apart from the inner wall of the lower shell. This space is a stress relief cavity. Hooks are provided on the outer side of some of the elastic vertical beams. A groove that cooperates with the hooks is provided inside the lower shell.

2. The snap-fit ​​structure according to claim 1, characterized in that: Limiting holes are provided at circumferential intervals on the upper side of the annular sealing ring, and limiting posts corresponding to the limiting holes are provided at the lower end of the upper cover.

3. A snap-fit ​​structure according to claim 1 or 2, characterized in that: The lower end face of the hook is a guide slope.

4. A snap-fit ​​structure according to claim 1 or 2, characterized in that: The hooks are symmetrically arranged on the elastic vertical beams on both sides of the top cover.

5. A snap-fit ​​structure according to claim 1, characterized in that: The hook is located at the lower end of the elastic vertical beam, and the hook, elastic vertical beam and top cover are integrally molded.

6. The snap-fit ​​structure according to claim 2, characterized in that: The top cover and the limiting post are integrally molded.

7. A snap-fit ​​structure according to claim 1, characterized in that: The annular sealing ring and the silicone sleeve are integrally molded.

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