Dustproof cover with long service life

Abstract

The utility model relates to the field of automobile parts, in particular to a long-life dust cover which comprises a cover body, the cover body comprises a first connecting part, a second connecting part and a deformation part, one end of the deformation part is connected to one end face of the first connecting part, and the other end of the deformation part is connected to the end face of the second connecting part. An inner cavity of the deformation part communicates with an inner cavity of the first connecting part and communicates with an inner cavity of the second connecting part, an opening of the first connecting part is smaller than an opening of the second connecting part, a plurality of deformation ring grooves are formed in the end face, facing the first connecting part, of the deformation part at intervals, and the axes of the deformation ring grooves coincide with the axis of the deformation part. Through the arrangement of the deformation ring groove, the single-peak dust cover can more flexibly adapt to changes of external pressure, the swing angle of the single-peak dust cover is increased, the single-peak dust cover can more flexibly adapt to the installation requirements of different angles, the applicability of the single-peak dust cover in the complex environment is improved, the single-peak dust cover is not prone to damage when pressed, and the service life of the single-peak dust cover is prolonged. Therefore, the service life of the single-peak dust cover is prolonged.

Description

Technical Field

[0001] This application relates to the field of automotive parts, and in particular to a long-life dust cover. Background Technology

[0002] A dust cover is an item that serves to prevent dust. In automobiles, the two ends of the dust cover are fixed to the outside of the bell-shaped housing and the bearing of the three ball pin by clamps, thereby preventing external impurities from entering the bell-shaped housing and affecting the use of the constant velocity universal joint.

[0003] Dust covers undergo significant torsional deformation during use, leading to localized stress concentration. This reduces the elasticity and compressive and tensile properties of the dust cover, making it prone to breakage under pressure and thus shortening its service life. Utility Model Content

[0004] In order to improve the problem of the service life of dust covers, this application provides a long-life dust cover.

[0005] This application provides a long-life dust cover, which adopts the following technical solution:

[0006] A long-life dust cover includes a cover body, which includes a connecting part one, a connecting part two, and a deformable part. One end of the deformable part is connected to the end face of the connecting part one, and the other end of the deformable part is connected to the end face of the connecting part two. The inner cavity of the deformable part is connected to the inner cavity of the connecting part one and the inner cavity of the connecting part two. The opening of the connecting part one is smaller than the opening of the connecting part two. The end face of the deformable part facing the connecting part one is provided with a plurality of deformable annular grooves spaced apart, and the axis of the deformable annular grooves coincides with the axis of the deformable part.

[0007] By adopting the above technical solution, the opening of the first connecting part is smaller than that of the second connecting part. The first connecting part is used to cover small-sized components such as three-ball bearings, while the second connecting part is used to cover large-sized components such as bell-shaped shells. Multiple deformation ring grooves are distributed at intervals on the end face of the deformation part facing the first connecting part, and the axis of the deformation ring grooves coincides with the axis of the deformation part. This increases the deformation space of the deformation part, allowing it to better disperse stress when under pressure, avoiding local stress concentration, thereby reducing deformation and damage caused by uneven pressure. This allows the single-peak dust cover to adapt more flexibly to changes in external pressure, increases the swing angle of the single-peak dust cover, and allows it to adapt more flexibly to different installation angles, improving its applicability in complex environments. It also makes the single-peak dust cover less prone to damage under pressure, thus extending its service life.

[0008] Optionally, a pressure-reducing surface is provided at the connection between the connecting part and the deformable part, and the pressure-reducing surface is arc-shaped.

[0009] By adopting the above technical solution, the pressure-reducing surface is located at the connection between the connecting part and the deformation part, and the pressure-reducing surface is arc-shaped, so that the single-peak dust cover can better adapt to the changes in external stress when it is under pressure, avoid local stress concentration, and thus improve the structural strength between the connecting part and the deformation part.

[0010] Optionally, a pressure-reducing surface two is provided at the connection between the connecting part two and the deformation part, and the pressure-reducing surface two is arc-shaped.

[0011] By adopting the above technical solution, the second pressure-reducing surface is located at the connection between the second connecting part and the deforming part, and the second pressure-reducing surface is arc-shaped, so that the single-peak dust cover can better adapt to the changes in external stress when it is under pressure, avoid local stress concentration, and thus improve the structural strength between the second connecting part and the deforming part.

[0012] Optionally, the end faces of the two protruding deformable parts of the connecting part are coaxially connected with anti-wear rings.

[0013] By adopting the above technical solution, the opening of the second connecting part is larger than that of the first connecting part, and the anti-wear ring is connected to the end face of the protruding deformation part of the second connecting part, so that the anti-wear ring is located at the position of the single-peak dust cover most susceptible to external impact, thereby achieving centralized protection of the second connecting part, making the second connecting part less susceptible to external impact and wear, thereby improving the wear resistance of the single-peak dust cover.

[0014] Optionally, the anti-wear ring has a buffer surface on the end face facing the connecting part one, and the buffer surface is in the shape of a circular arc protrusion.

[0015] By adopting the above technical solution, the buffer surface is located on the end face of the anti-wear ring facing the connection part, and the buffer surface is in the shape of a circular arc protrusion, so that the pressure can be evenly distributed when the anti-wear ring is subjected to external impact, reducing the local stress concentration on the anti-wear ring, reducing the wear on the anti-wear ring, and further improving the service life of the single-peak dust cover.

[0016] Optionally, a positioning ring groove for inserting a clamp is coaxially formed on the outer peripheral surface of the connecting part.

[0017] By adopting the above technical solution, the clamp is embedded in the positioning ring groove, and the inner wall of the positioning ring groove abuts against the outer wall of the clamp to form a positioning, thereby improving the installation efficiency of the connection part on the three-ball pin bearing.

[0018] Optionally, the outer circumferential surface of the second connecting part is coaxially provided with a positioning ring groove for the clamp to be inserted.

[0019] By adopting the above technical solution, the clamp is embedded in the second positioning ring groove, and the inner wall of the second positioning ring groove abuts against the outer wall of the clamp to form a positioning, thereby improving the installation efficiency of the second connection part on the bell-shaped shell.

[0020] Optionally, a sealing ring is coaxially connected to the inner wall of the connecting part near the positioning ring groove.

[0021] By adopting the above technical solution, when the clamp is embedded in the positioning ring groove, the clamp squeezes the inner wall of the positioning ring groove, causing the inner wall of the connecting part and the three ball pin bearing to clamp the two sides of the sealing ring to form a seal, thereby improving the sealing stability of the single-peak dust cover.

[0022] Optionally, a sealing ring two is coaxially connected to the inner wall of the connecting part two near the positioning ring groove two.

[0023] By adopting the above technical solution, when the clamp is embedded in the positioning ring groove, the clamp squeezes the inner wall of the positioning ring groove, causing the inner wall of the connecting part and the outer wall of the bell-shaped shell to clamp the two sides of the sealing ring to form a seal, thereby improving the sealing stability of the single-peak dust cover.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The design of the deformation ring groove allows the single-peak dust cover to adapt more flexibly to changes in external pressure, increases the swing angle of the single-peak dust cover, and allows it to adapt more flexibly to different installation angles, improving the applicability of the single-peak dust cover in complex environments, making it less prone to breakage under pressure, thereby extending the service life of the single-peak dust cover.

[0026] 2. The setting of pressure-reducing surface one enables the single-peak dust cover to better adapt to changes in external stress when under pressure, avoid local stress concentration, and thus improve the structural strength between connection part one and deformation part;

[0027] 3. The setting of pressure-reducing surface two enables the single-peak dust cover to better adapt to changes in external stress when under pressure, avoid local stress concentration, and thus improve the structural strength between connection part two and deformation part. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Cover body; 11. Connecting part one; 111. Sealing section one; 1111. Positioning ring groove one; 112. Connecting section one; 1121. Step surface one; 1122. Pressure reducing surface one; 12. Connecting part two; 121. Sealing section two; 1211. Positioning ring groove two; 122. Connecting section two; 1221. Step surface two; 1222. Pressure reducing surface two; 13. Deformation part; 131. Deformation ring groove; 2. Sealing ring one; 21. Deformation surface one; 3. Sealing ring two; 31. Deformation surface two; 4. Anti-wear ring; 41. Buffer surface. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0031] This application discloses a long-life dust cover. (See also...) Figure 1 The long-life dust cover includes a cover body 1, which includes a connecting part 11, a connecting part 2 12, and a deformable part 13. In the embodiments of this application, the connecting part 11, the connecting part 2 12, and the deformable part 13 are all rings. One end of the deformable part 13 along the axial direction is integrally formed and coaxially fixed to the end face of the connecting part 11, and the other end of the deformable part 13 along the axial direction is integrally formed and fixed to the end face of the connecting part 2 12. The inner cavity of the deformable part 13 connects the inner cavity of the connecting part 11 and the inner cavity of the connecting part 2 12. The outer diameter of the connecting part 11 is smaller than the outer diameter of the connecting part 2 12. The connecting part 11 can cover small-sized components such as three-ball bearings, and the connecting part 2 12 can cover large-sized components such as bell-shaped shells.

[0032] Reference Figure 1 The deformable part 13 has multiple deformable annular grooves 131 spaced apart on its end face facing the connecting part 11, and the axis of the deformable annular grooves 131 coincides with the axis of the deformable part 13. This increases the deformation space of the deformable part 13, allowing it to better disperse stress when under pressure, avoiding local stress concentration, thereby reducing deformation and damage caused by uneven pressure. This also allows the single-peak dust cover to adapt more flexibly to changes in external pressure, increases the swing angle of the single-peak dust cover, and allows it to adapt more flexibly to different installation angles, improving its applicability in complex environments. This also makes the single-peak dust cover less prone to damage under pressure, thus extending its service life.

[0033] Reference Figure 1 The connecting part 11 includes a sealing section 111 and a connecting section 112. One end of the connecting section 112 is integrally formed and coaxially fixed to the end face of the sealing section 111, and the other end of the connecting section 112 is integrally formed and coaxially fixed to the end face of the deformable part 13. The diameter of the connecting section 112 is larger than the diameter of the sealing section 111. A stepped surface 1121 is formed at the connection between the connecting section 112 and the sealing section 111. A positioning annular groove 1111 for a clamp to be inserted is coaxially formed on the outer circumferential surface of the sealing section 111. The inner wall of the positioning annular groove 1111 can abut against the clamp. The surface is positioned to improve the installation of the sealing section 111 on the three-ball pin bearing. At the same time, the sealing section 111 is coaxially and integrally formed with a sealing ring 2 near the inner wall of the positioning ring groove 1111. The end face of the sealing ring 2 facing the axis of the sealing section 111 has a deformation surface 21, which is arc-shaped and convex. When the clamp is inserted into the positioning ring groove 1111 and the sealing section 111 is clamped and fixed to the outer circumference of the three-ball pin bearing, the deformation surface 21 is compressed and deformed and presses against the outer circumference of the three-ball pin bearing to form a seal, thereby improving the sealing stability of the single-peak dust cover.

[0034] Reference Figure 1The connection between the connecting section 112 and the deformable part 13 is provided with a pressure-reducing surface 1122. The pressure-reducing surface 1122 is arc-shaped and the axis of the pressure-reducing surface 1122 faces the surface of the deformable part 13, so that the connecting part 11 can be subjected to force evenly when it is subjected to pressure deformation, thereby improving the structural strength between the connecting section 112 and the deformable part 13.

[0035] Reference Figure 1 The connecting part 2 12 includes a sealing section 2 121 and a connecting section 2 122. One end of the connecting section 2 122 along the axial direction is integrally formed and fixed to the end face of the sealing section 2 121. The other end of the connecting section 2 122 along the axial direction is integrally formed and coaxially fixed to the end face of the deformable part 13. The diameter of the connecting section 2 122 is smaller than the diameter of the sealing section 2 121. A stepped surface 2 1221 is formed at the connection between the connecting section 2 122 and the sealing section 2 121. A positioning ring groove 2 1211 for the clamp to be inserted is coaxially formed on the outer circumferential surface of the sealing section 2 121. The inner wall of the positioning ring groove 2 1211 can abut against the clamp. The clamp surface forms a positioning, thereby improving the installation of the sealing section 2 121 on the bell-shaped shell. The sealing section 2 121 is coaxially and integrally formed with the sealing ring 2 3 near the inner wall of the positioning ring groove 2 1211. The end face of the sealing ring 2 3 facing the axis of the sealing section 2 121 is provided with a deformation surface 2 31. The deformation surface 2 31 is in the shape of a circular arc protrusion. When the clamp is embedded in the positioning ring groove 2 1211 and the sealing section 2 121 is clamped and fixed to the outer circumference of the bell-shaped shell, the deformation surface 2 31 is compressed and deformed and presses against the outer circumference of the bell-shaped shell to form a seal, thereby further improving the sealing stability of the single-peak dust cover.

[0036] Reference Figure 1 The connection between the connecting section 2 122 and the deformation part 13 is provided with a pressure-reducing surface 2 1222. The pressure-reducing surface 2 1222 is arc-shaped, and the axis of the pressure-reducing surface 2 1222 faces the inner cavity of the connecting section 2 122, so that the connecting section 2 122 can be subjected to uniform force when it is subjected to pressure deformation, thereby improving the structural strength between the connecting section 2 122 and the deformation part 13.

[0037] Reference Figure 1 The end face of the protruding deformation part 13 of the second connecting section 122 is integrally formed and coaxially fixed with an anti-wear ring 4. The end face of the anti-wear ring 4 facing the first connecting section 112 is provided with a buffer surface 41. The buffer surface 41 is in the shape of a circular arc protrusion, so that the pressure can be evenly distributed when the anti-wear ring 4 is subjected to external impact, reducing the local stress concentration on the anti-wear ring 4 and reducing the wear on the anti-wear ring 4. Moreover, the second anti-wear ring 4 is located at the position of the single-peak dust cover that is most susceptible to external impact, realizing the concentrated protection of the second connecting section 122, making the second connecting section 122 less susceptible to wear from external impact, thereby improving the wear resistance of the single-peak dust cover and extending the service life of the single-peak dust cover.

[0038] The implementation principle of the long-life dust cover in this application embodiment is as follows: multiple deformation ring grooves 131 are spaced apart on the surface of the deformation part 13, and the axis of the deformation ring grooves 131 coincides with the axis of the deformation part 13, increasing the deformation space of the deformation part 13, so that the deformation part 13 can better disperse stress when under pressure, avoid local stress concentration, thereby reducing deformation and damage caused by uneven pressure, making the single-peak dust cover more flexible to adapt to changes in external pressure, increasing the swing angle of the single-peak dust cover, making the single-peak dust cover more flexible to adapt to different angle installation requirements, improving the applicability of the single-peak dust cover in complex environments, making the single-peak dust cover less prone to damage when under pressure, thereby extending the service life of the single-peak dust cover.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A long-life dust cover, characterized in that: The device includes a cover (1), which includes a first connecting part (11), a second connecting part (12), and a deformable part (13). One end of the deformable part (13) is connected to the end face of the first connecting part (11), and the other end of the deformable part (13) is connected to the end face of the second connecting part (12). The inner cavity of the deformable part (13) is connected to the inner cavity of the first connecting part (11) and the inner cavity of the second connecting part (12). The opening of the first connecting part (11) is smaller than the opening of the second connecting part (12). The end face of the deformable part (13) facing the first connecting part (11) is provided with a plurality of deformable annular grooves (131) spaced apart, and the axis of the deformable annular grooves (131) coincides with the axis of the deformable part (13).

2. The long-life dust cover according to claim 1, characterized in that: The connection between the connecting part (11) and the deformation part (13) is provided with a pressure reducing surface (1122), which is arc-shaped.

3. The long-life dust cover according to claim 1, characterized in that: The connection between the second connecting part (12) and the deformation part (13) is provided with a pressure-reducing surface (1222), which is arc-shaped.

4. The long-life dust cover according to claim 1, characterized in that: The end face of the protruding deformation part (13) of the connecting part two (12) is coaxially connected to the anti-wear ring (4).

5. The long-life dust cover according to claim 4, characterized in that: The anti-wear ring (4) has a buffer surface (41) on the end face facing the connecting part (11), and the buffer surface (41) is in the shape of a circular arc protrusion.

6. The long-life dust cover according to claim 1, characterized in that: The outer circumferential surface of the connecting part (11) is coaxially provided with a positioning ring groove (1111) for the clamp to be inserted.

7. The long-life dust cover according to claim 1, characterized in that: The outer circumferential surface of the connecting part 2 (12) is coaxially provided with a positioning ring groove 2 (1211) for the clamp to be inserted.

8. The long-life dust cover according to claim 6, characterized in that: The connecting part (11) is coaxially connected to the inner wall of the positioning ring groove (1111) with a sealing ring (2).

9. The long-life dust cover according to claim 7, characterized in that: The connecting part 2 (12) is coaxially connected to the inner wall of the positioning ring groove 2 (1211) with a sealing ring 2 (3).

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