Dustproof structure of rotating shaft assembly

Abstract

The utility model relates to the technical field of seat parts, in particular to a dustproof structure of a rotating shaft assembly, which comprises a rotating shaft, a rotating sleeve and a dustproof cover, and the dustproof cover covers the end face of the rotating sleeve; one end of the rotating shaft penetrates through the dustproof cover and the rotating sleeve and is rotationally connected with the rotating sleeve; the dustproof cover is connected with the rotating shaft and the rotating sleeve in a sealed mode, the dustproof cover is arranged on the periphery of the rotating shaft and covers the end face of the rotating sleeve, the dustproof cover is connected with the rotating shaft in a sealed mode, the dustproof cover is connected with the rotating sleeve in a sealed mode, and comprehensive dustproof sealing of the rotating shaft assembly is achieved. Dust is prevented from being accumulated in the rotating shaft assembly, and the service life of the rotating shaft assembly is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of seat components, and in particular to a dustproof structure of a rotating shaft assembly. Background Art

[0002] In the use of the swivel chair, in order to achieve the rotational reset effect, a rotating shaft assembly for rotational reset is currently provided at the bottom of the seat; however, the existing rotating shaft assembly is not equipped with dust prevention measures, resulting in continuous accumulation of dust inside the rotating shaft assembly during use, which will cause the rotation of the rotating shaft to be obstructed, affecting the use of the swivel chair and resulting in problems such as reduced service life. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a dustproof structure of a rotating shaft assembly, comprising a rotating shaft, a rotating sleeve and a dustproof cover, wherein the dustproof cover covers the end surface of the rotating sleeve; one end of the rotating shaft is inserted through the dustproof cover and the rotating sleeve and is rotatably connected to the rotating sleeve; the dustproof cover is respectively sealed to the rotating shaft and the rotating sleeve. By providing the dustproof cover, a comprehensive dustproof seal of the rotating shaft assembly is achieved, thereby increasing the service life of the rotating shaft assembly.

[0004] Preferably, a first annular groove is provided on the outer circumferential surface of the rotating shaft, and the dust cover is provided with a through hole for the rotating shaft to pass through, and an annular clamping platform embedded in the first annular groove is formed on the inner wall of the through hole. By setting the annular clamping platform, the dust cover is clamped on the outer circumferential surface of the rotating shaft, thereby realizing dustproof sealing of the rotating shaft assembly and improving the service life of the rotating shaft assembly.

[0005] Preferably, a groove is provided on the inner surface of the rotating shaft close to the first annular groove, a first seal is provided in the groove, and the first seal is embedded in the groove through the annular clamp. By sleeved the first seal in the groove, the rotating shaft assembly is further dust-sealed.

[0006] Preferably, the annular clamping platform and the dust cover are integrally formed as an optional connection method to improve the connection strength of the structure.

[0007] Preferably, the annular clamping platform is detachably connected to the inner wall of the through hole of the dust cover as an optional connection method, which reduces the difficulty of product maintenance and simplifies the production process of the product.

[0008] Preferably, a second annular groove is provided on the surface of the rotating sleeve facing the dust cover, and a second seal embedded in the second annular groove is provided on the surface of the dust cover covering the rotating sleeve. By arranging the second seal in the second annular groove, the rotating shaft assembly is further dust-sealed.

[0009] From the above, it can be seen that the application of the present application can obtain the following beneficial effects: the present application provides a rotating shaft and a rotating sleeve rotatably connected to the outer wall of the rotating shaft, and a dust cover covering the end face of the rotating sleeve is provided on the outer peripheral sleeve of the rotating shaft. The dust cover is sealingly connected to the rotating shaft and the rotating sleeve respectively. By providing the dust cover, comprehensive dustproof sealing of the rotating shaft assembly is achieved, thereby improving the service life of the rotating shaft assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the description of the embodiments of the present application or the prior art are briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0011] Figure 1 This is a schematic diagram of the structure of the rotating shaft assembly according to an embodiment of the present application.

[0012] Figure 2 It is a schematic diagram of the structure of the rotating sleeve according to an embodiment of the present application.

[0013] Figure 3 This is a schematic diagram of the structure of the rotating shaft of an embodiment of the present application.

[0014] Figure 4 It is a schematic diagram of the structure of the dust cover according to an embodiment of the present application.

[0015] Figure 5 It is a partial cross-sectional view of the rotating shaft assembly according to an embodiment of the present application.

[0016] Figure 6 This is a partial enlarged view of the first sealing structure of the embodiment of the present application.

[0017] Reference numerals

[0018] 10. Rotating shaft; 20. Rotating sleeve; 11. First annular groove; 12. First sealing member; 13. Groove;

[0019] 21. Second annular groove; 31. Dust cover; 311. Second sealing member; 312. Annular clamping table. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Example

[0022] In order to solve the above technical problems, this embodiment provides a dustproof structure of a rotating shaft assembly, such as Figure 1 As shown, it includes a rotating shaft 10, a rotating sleeve 20 and a dust cover 31, the dust cover 31 covers the end surface of the rotating sleeve 20; one end of the rotating shaft 10 is inserted into the dust cover 31 and the rotating sleeve 20, and is rotatably connected to the rotating sleeve 20; the dust cover 31 is sealed and connected to the rotating shaft 10 and the rotating sleeve 20 respectively. Figure 5 As shown, by setting a second seal 311 on the dust cover 11, and then setting a second annular groove 21 on the rotating sleeve 20, when the dust cover 31 is sleeved on the rotating shaft assembly, the second seal 311 is embedded in the second annular groove 21, by opening a groove 13 on the rotating shaft 10, sleeved with the first seal 12 in the groove 13, and then setting an annular clamping platform 312 on the inner wall of the through hole of the rotating shaft 10, when the dust cover 10 is embedded in the first annular groove 11, the annular clamping platform 312 abuts against the first seal 12 in the groove 13, and by setting the dust cover 10, a comprehensive dustproof seal of the rotating shaft assembly is achieved, thereby improving the service life of the rotating shaft assembly.

[0023] Specifically, a bearing is provided in the rotating sleeve 20, and one end of the rotating shaft 10 is rotatably connected to the rotating sleeve 20 through the bearing. In order to prevent dust from entering the internal bearing from the gap between the rotating sleeve 20 and the rotating shaft 10, as shown in FIG. Figure 3 As shown, a first annular groove 11 is provided on the outer circumferential surface of the rotating shaft 10, and a through hole is provided on the dust cover 31 for the rotating shaft 10 to pass through. An annular clamping platform 312 abutting against the side wall of the first annular groove 11 is formed on the inner wall of the through hole. After the dust cover 31 is covered on the rotating sleeve 20, one end of the rotating shaft 10 passes through the through hole of the dust cover 31 and is connected to the bearing inside the rotating sleeve 20. At this time, the annular clamping platform 312 on the dust cover 31 abuts against the side wall of the first annular groove 11, so that the dust cover 31 is embedded in the outer circumferential surface of the rotating shaft, and at the same time, the dust-proof sealing of the rotating shaft assembly is realized to prevent dust from entering the interior of the rotating shaft assembly, thereby improving the service life of the rotating shaft assembly.

[0024] As a preferred embodiment, Figure 6As shown, a groove 13 is provided on the inner surface of the rotating shaft 10 near the first annular groove 11, and a first sealing member 12 is provided in the groove 13. After the bottom of the rotating shaft 10 passes through the through hole of the dust cover 31, the annular clamping platform 312 of the dust cover 31 is embedded in the groove 13 of the first annular groove 11, and then the annular clamping platform 312 abuts against the first sealing member 12 in the groove 13. Then, when the dust cover 10 is embedded in the first annular groove 11, the annular clamping platform 312 abuts against the first sealing member 12 in the groove 13, thereby realizing the sealing between the rotating shaft 10 and the dust cover 31, and further performing dustproof sealing on the rotating shaft assembly. Among them, the rotating shaft 10 and the dust cover 31 need to rotate relative to each other, so the top of the annular clamping platform 312 is spherical, and when the annular clamping platform 312 abuts against the side wall of the first annular groove 11, friction is reduced as much as possible to reduce the impact on the rotation of the rotating shaft 10, and the first sealing member 12 can be replaced regularly.

[0025] As a preferred embodiment, Figure 4 The annular clamping platform 312 is integrally formed with the dust cover 31 by injection molding and stamping, and is used as an optional connection method to improve the connection strength of the structure.

[0026] As a preferred embodiment, the annular clamping platform 312 is detachably connected to the inner wall of the through hole of the dust cover 31. The annular clamping platform 312 is connected to the inner wall of the through hole of the dust cover 31 by a pin. As an optional connection method, the difficulty of product maintenance is reduced and the production process of the product is simplified. At the same time, when the annular clamping platform 312 is damaged, it is convenient to replace the annular clamping platform 312. In order to prevent the annular clamping platform 312 from damaging the rotating shaft 10, the material of the annular clamping platform 312 can be plastic.

[0027] As a preferred embodiment, Figure 2 As shown, a second annular groove 21 is provided on the surface of the rotating sleeve 20 facing the dust cover 31, and a second sealing member 311 embedded in the second annular groove 21 is provided on the surface of the rotating sleeve 20 covered by the dust cover 31. By providing the second sealing member 311 on the dust cover 11 and then providing the second annular groove 21 on the rotating sleeve 20, when the dust cover 31 is sleeved on the rotating shaft assembly, the second sealing member 311 is embedded in the second annular groove 21. By sleeved the second sealing member in the second annular groove, the dust cover 31 and the rotating sleeve 20 are sealed, and the rotating shaft assembly is further dust-sealed.

[0028] The above-described implementation methods do not constitute a limitation on the protection scope of the technical solution. Any modification, equivalent replacement and improvement made within the spirit and principle of the above-described implementation methods shall be included in the protection scope of the technical solution.

Claims

1. A dustproof structure for a rotating shaft assembly, characterized in that: The utility model comprises a rotating shaft (10), a rotating sleeve (20) and a dust cover (31), wherein the dust cover (31) covers the end surface of the rotating sleeve (20); one end of the rotating shaft (10) is inserted into the dust cover (31) and the rotating sleeve (20) and is rotatably connected to the rotating sleeve (20); and the dust cover (31) is respectively sealedly connected to the rotating shaft (10) and the rotating sleeve (20).

2. The dustproof structure of the rotating shaft assembly according to claim 1, characterized in that: The outer circumferential surface of the rotating shaft (10) is provided with a first annular groove (11), the dust cover (31) is provided with a through hole for the rotating shaft (10) to pass through, and an annular clamping platform (312) is formed on the inner wall of the through hole and abuts against the side wall of the first annular groove (11).

3. The dustproof structure of the rotating shaft assembly according to claim 2, characterized in that: A groove (13) is provided on the inner surface of the rotating shaft (10) close to the first annular groove (11), a first sealing member (12) is provided in the groove (13), and the first sealing member (12) is embedded in the groove (13) through the annular clamping platform (312).

4. The dustproof structure of the rotating shaft assembly according to claim 2, characterized in that: The annular clamping platform (312) and the dust cover (31) are integrally formed.

5. The dustproof structure of the rotating shaft assembly according to claim 2, characterized in that: The annular clamping platform (312) is detachably connected to the inner wall of the through hole of the dust cover (31).

6. The dustproof structure of the rotating shaft assembly according to claim 2, characterized in that: The surface of the rotating sleeve (20) facing the dust cover (31) is provided with a second annular groove (21), and the surface of the dust cover (31) covering the rotating sleeve (20) is provided with a second sealing member (311) embedded in the second annular groove (21).

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