Structure for preventing surface of inner rolling edge filter shell from cracking

By improving the contact surface between the screw plate and the shell, using chamfer structure and curing glue filling design, the problem of cracking and oil leakage at the contact between the inner piping filter shell and the screw plate is solved, achieving uniform stress and sealing, and improving The yield rate of the product.

CN222468348UActive Publication Date: 2025-02-14ANHUI AOGE AUTOMOTIVE COMPONENTS CO LTD
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Patent Information

Application Number
CN202323607930.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-28
Publication Date
2025-02-14
Estimated Expiration
2033-12-28

AI Technical Summary

Technical Problem

The shell of the existing inner piping filter often has cracks and oil leakage at the contact point between the screw plate, resulting in poor user experience.

Method used

By improving the contact surface between the screw plate and the shell, the inside and outside sides of the screw plate edge adopts a chamfered structure, the outer diameter matches the inner diameter gap 0 of the outer shell, and the gap is filled with curing glue and grinding.

Benefits of technology

The uniform stress between the screw plate and the shell is achieved, stress concentration and material fatigue are avoided, the possibility of shell cracking is reduced, the sealing is ensured, and the product yield is improved.

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Abstract

The utility model discloses a structure for preventing the surface of an inner rolloff filter shell from cracking, which comprises a filter shell, an upper cover plate and a spiral plate, a sealing structure is formed between the shell and the upper cover plate through rolloff, the spiral plate is round, the inner side of the round edge of the spiral plate is made into an inclined plane and is provided with a round chamfer, and the included angle between the inclined plane and the horizontal plane is 8-10 degrees. As the inner side and the outer side of the edge of the screw plate adopt the chamfer structures, the stress distribution of the edge of the screw plate and the shell is improved, the shell at the contact part is uniformly stressed, meanwhile, the outer diameter of the screw plate is in clearance 0 fit with the inner diameter of the shell, and the space between the outer diameter of the screw plate and the inner diameter of the shell is filled with curing glue and is jointed. Therefore, the contact surface between the screw plate and the shell is fully sealed, and the oil leakage phenomenon is avoided; and meanwhile, the stress on the contact surface of the shell and the screw plate is reduced, and the shell is ensured not to crack. Therefore, the yield of products is improved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, in particular to a structure for preventing the surface of an inner roll filter shell from cracking, which is an improvement on the filter assembly structure in the prior art. Background Art

[0002] The upper end of the existing inner roll filter is sealed by the outer shell, the upper cover plate and the screw plate. The inner shell is provided with a central tube, folded filter paper, a check valve, a support spring and other structures. The existing inner roll filter often cracks and leaks oil at the contact between the outer shell and the screw plate, resulting in a poor user experience.

[0003] Therefore, it is necessary to fully consider the force distribution of the filter housing to improve the force on the contact surface between the housing and the screw plate, which can not only meet the sealing requirements and prevent oil leakage, but also reduce the force on the housing. By optimizing the design scheme, the stress concentration and material fatigue can be effectively reduced, and the possibility of housing cracking can be further reduced. Utility Model Content

[0004] The utility model aims to provide a structure for preventing the surface of the inner roll filter housing from cracking, by improving the contact surface between the screw plate and the housing, changing the stress thereof, preventing the housing from cracking and leaking oil, and improving the yield rate.

[0005] The utility model is realized through the following technical solutions.

[0006] A structure for preventing cracking of the inner roll filter housing surface, comprising a filter housing, an upper cover plate, and a screw plate, characterized in that a sealing structure is formed between the housing and the upper cover plate by rolling, the screw plate is circular, the inner side of the circular edge is made into a bevel, and has a circular chamfer R1.5mm, and the angle between the bevel and the horizontal plane is 8-10 o .

[0007] The structure for preventing cracking of the inner roll filter housing surface is characterized in that a circular chamfer R0.5mm is provided on the outer side of the screw plate.

[0008] The structure for preventing the inner edge filter housing from cracking is characterized in that the outer diameter of the screw plate and the inner diameter of the housing have a clearance of 0.

[0009] The structure for preventing the inner edge filter housing from cracking is characterized in that the space between the outer diameter of the screw plate and the inner diameter of the housing is filled with curing glue and grouted.

[0010] The curing glue adopts AB two-component fixing glue.

[0011] The utility model adopts chamfered structures on both the inner and outer sides of the screw plate edge, which improves the force distribution of the screw plate edge and the shell, so that the shell is evenly stressed at the contact part. At the same time, the outer diameter of the screw plate and the inner diameter of the shell are matched with a gap of 0, and the outer diameter of the screw plate and the inner diameter of the shell are filled with curing glue and pointed. This ensures that the contact surface between the screw plate and the shell is fully sealed and oil leakage will not occur; at the same time, the force on the contact surface between the shell and the screw plate is reduced, ensuring that the shell will not crack. This improves the yield rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the existing filter housing and screw plate packaging structure.

[0013] Figure 2 It is a schematic diagram of the filter housing and screw plate packaging structure of the utility model.

[0014] Numbers in the figure:

[0015] 1. Shell, 2. Upper cover, 3. Screw plate, 301, Inclined surface, 4. Center tube, 5. Filter element, 6. Support spring, 7. Crack position of filter shell in prior art, DETAILED DESCRIPTION

[0016] See also Figure 1 , the inner edge filter cracked at the contact point between the screw plate and the outer shell 7.

[0017] See also Figure 2 .

[0018] A structure for preventing cracking of the inner roll filter housing surface, comprising a filter housing 1, an upper cover plate 2, and a screw plate 3. The housing 1 is provided with a center tube 4, a filter element 5, a support spring 6 and other conventional filter structures. The housing 1 and the upper cover plate 2 form a sealing structure by rolling, which belongs to conventional prior art. The utility model improvement relates to the connection contact between the housing 1 and the screw plate 3. The screw plate 3 is circular, and the inner side of its circular edge is made into an inclined surface 301, and has a circular chamfer R0.5mm. The angle between the inclined surface and the horizontal plane is 8-10 o .

[0019] The outer side of the screw plate 4 is provided with a circular chamfer R1.5mm.

[0020] The outer diameter of the screw plate 3 and the inner diameter of the shell 1 have a clearance of 0. The outer diameter of the screw plate 3 and the inner diameter of the shell 1 are filled with curing glue and pointed. The curing glue is AB two-component fixing glue.

[0021] Working principle:

[0022] Since the outer and inner edges of the screw plate 3 adopt a circular chamfered structure, the stress on the contact surface with the shell becomes uniform, and there is no special stress-bearing part, thereby preventing the shell from cracking due to uneven or excessive stress.

[0023] The inner side of the circular edge of the screw plate is made into an inclined surface, which can also make the bending part of the shell bear the force evenly and prevent breakage.

[0024] By improving the design of the screw plate, the gap between the upper end surface of the screw plate and the shell is reduced. The product was tested with a pulse pressure of 1.6MPa and 400,000 times without cracking or oil leakage at the R corner of the shell side, meeting customer requirements. The product quality has been significantly improved and recognized by customers.

Claims

1. A structure for preventing the surface of an inner roll filter housing from cracking, comprising a filter housing, an upper cover plate, and a screw plate, characterized in that A sealing structure is formed between the shell and the upper cover plate by rolling. The screw plate is circular, and the inner side of the circular edge is made into an inclined surface and has a circular chamfer.

2. The structure for preventing the inner edge filter housing from cracking according to claim 1 is characterized in that The outer side of the screw plate is provided with a circular chamfer.

3. The structure for preventing the inner edge filter housing from cracking according to claim 1 is characterized in that The space between the outer diameter of the screw plate and the inner diameter of the shell is filled with curing glue and grouted.

4. The structure for preventing the inner edge filter housing from cracking according to claim 1, characterized in that: The angle between the inclined plane and the horizontal plane is 8-10 o .