Efficient sealing structure of automobile oil filter
By combining the sealing and locking components, the problem of rubber seals failing under high-frequency vibration is solved, achieving tight fit of the seals under high-frequency vibration and stability of the threaded connection, thus preventing oil leakage.
Patent Information
- Application Number
- CN202520586284.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Traditional rubber seals are prone to creep or permanent deformation under high-frequency engine vibration, making them unable to effectively fit the mounting surface, resulting in oil leakage. Furthermore, the threaded connection becomes loose and cannot maintain a tight seal under high-frequency vibration.
The design employs a combination of sealing and locking components. The sealing component includes a sealing ring, a limiting ring, and a return spring, while the locking component includes a fixing block, an ejection spring, a limiting rod, and a lever. Through the sealing properties of rubber and the elastic recovery characteristics of the metal spring, the sealing ring is ensured to fit tightly against the mounting surface under high-frequency vibration, and the threaded connection is maintained tightly through the cooperation of the limiting rod and the ejection spring.
Under high-frequency vibration, the sealing ring can effectively fit the mounting surface, prevent oil leakage, maintain the tightness of the threaded connection, and avoid seal failure and loosening.
Smart Images
Figure CN223839211U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil filter technology, specifically a high-efficiency automotive oil filter sealing structure. Background Technology
[0002] As one of the core components of a car engine, the oil filter's function is to intercept impurities in the oil (such as metal shavings, carbon deposits, etc.) through the filter element, ensuring that clean oil circulates into the engine, thereby reducing the risk of wear and corrosion of critical components and extending engine life. In the current technology, oil filters are usually installed to the engine housing through a threaded connection, and elastic seals (such as rubber sealing rings) are set at the interface to seal the oil filtering passage.
[0003] Traditional rubber seals, lacking rigid support, are prone to creep or permanent deformation when subjected to high-frequency engine vibration. This makes them unable to effectively conform to the mounting surface and maintain a constant sealing pressure, resulting in oil leakage. In addition, while oil filters are fixed to the engine housing via threads, the lack of an anti-slip locking mechanism between the seal and the mounting surface during vehicle operation can cause fretting wear of the threaded pair due to high-frequency engine vibration. This loosens the threaded connection, preventing the seal from effectively conforming to the mounting surface and causing oil leakage. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a high-efficiency automotive oil filter sealing structure. Through the setting of the sealing components, the sealing ring can effectively fit the mounting surface under high-frequency vibration, and through the setting of the locking components, the threaded connection remains tight under the high-frequency vibration of the engine.
[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:
[0006] A high-efficiency automotive oil filter sealing structure includes: a filter body with a mounting bracket threadedly connected to the top of the filter body; a sealing assembly disposed between the filter body and the mounting bracket, the sealing assembly including: a sealing ring, a first limiting ring, a return spring, and a second limiting ring; and a locking assembly disposed on the outer side of the filter body near the top, the locking assembly including: a fixing block, a push-out spring, a through groove, a limiting rod, a push-out groove, and a lever.
[0007] Furthermore, a fixing plate is fixedly connected to the top of the filter body, and an installation groove is opened at the bottom of the mounting bracket. A sealing ring is installed between the fixing plate and the installation groove. The cross-sectional shape of the sealing ring is "U". Limiting ring one and limiting ring two are respectively provided at the upper and lower ends of the sealing ring groove. The inner end face of limiting ring one is slidably connected to the outer end face of limiting ring two. A return spring is slidably connected in the groove of limiting ring one.
[0008] Furthermore, a fixing block is fixedly connected to the outer side of the filter body near the top position. A limit hole is opened at the bottom of the mounting bracket near the outer side. An ejection groove is provided inside the fixing block. An ejection spring is installed at the bottom of the ejection groove. A limit rod is slidably connected inside the ejection groove. The bottom of the limit rod is connected to the ejection spring. The top of the limit rod extends into the limit hole. A through groove is opened on one side of the fixing block. The through groove communicates with the ejection groove. A lever is fixedly connected to the outer side of the limit rod. One end of the lever protrudes from the outer surface of the fixing block and is slidably connected to the through groove.
[0009] The beneficial effects of this utility model are:
[0010] By combining the sealing components, the sealing and cushioning capabilities of rubber with the mechanical strength and elastic recovery characteristics of metal springs are utilized. This allows the sealing ring to effectively conform to the mounting surface under high-frequency vibration, improving the sealing effect. Furthermore, the locking components ensure that the threaded connection remains tight under high-frequency engine vibration, preventing oil leakage. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Figure 2 This is a cross-sectional view of the overall structure of this utility model.
[0013] Figure 3 This is a cross-sectional view of the sealing ring of this utility model.
[0014] Figure 4 This is a schematic diagram of the mounting support of this utility model.
[0015] Figure 5 For the present utility model Figure 2 Enlarged view of point A in the middle.
[0016] Figures 1-5 In the middle: 1. Filter body; 101. Fixing plate; 2. Fixing block; 201. Ejection spring; 202. Through groove; 203. Limiting rod; 204. Ejection groove; 205. Toggle rod; 3. Sealing ring; 301. Limiting ring one; 302. Return spring; 303. Limiting ring two; 4. Mounting support; 401. Limiting hole; 402. Mounting groove. Detailed Implementation
[0017] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0018] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0019] like Figures 1-5 As shown, a high-efficiency automotive oil filter sealing structure includes: a filter body 1, with a mounting bracket 4 threadedly connected to the top of the filter body 1; a sealing assembly disposed between the filter body 1 and the mounting bracket 4, the sealing assembly including: a sealing ring 3, a first limiting ring 301, a return spring 302, and a second limiting ring 303; and a locking assembly disposed on the outside of the filter body 1 near the top, the locking assembly including: a fixing block 2, a push-out spring 201, a through groove 202, a limiting rod 203, a push-out groove 204, and a lever 205.
[0020] By combining the sealing components, the sealing and cushioning capabilities of rubber with the mechanical strength and elastic recovery characteristics of metal springs are utilized. This allows the sealing ring 3 to remain in effective contact with the mounting surface even under high-frequency vibration, improving the sealing effect. Furthermore, the locking components ensure that the threaded connection remains tight under high-frequency engine vibration, preventing oil leakage.
[0021] The filter body 1 is fixedly connected to the top of a fixing plate 101, and the mounting support 4 has a mounting groove 402 at its bottom. A sealing ring 3 is installed between the fixing plate 101 and the mounting groove 402. The sealing ring 3 has a concave cross-section. Limiting ring 1 301 and limiting ring 2 303 are respectively provided at the upper and lower ends of the groove of the sealing ring 3. The inner end face of limiting ring 1 301 is slidably connected to the outer end face of limiting ring 2 303. A return spring 302 is slidably connected in the groove of limiting ring 1 301.
[0022] When the filter body 1 is threaded to the bottom of the mounting bracket 4, the filter body 1 drives the fixing plate 101 to squeeze the sealing ring 3, so that the two top surfaces of the sealing ring 3 contact the groove surfaces of the fixing plate 101 and the mounting groove 402, and compress the sealing ring 3. During this process, the return spring 302 and the sealing ring 3 are squeezed and generate elastic force. Under the action of elastic force, the sealing ring 3, the fixing plate 101 and the groove surfaces of the mounting groove 402 are tightly fitted, and the limiting ring 1 301 and the limiting ring 2 303 approach each other and slide to limit each other. While limiting, they provide rigid support, so that the sealing ring 3 is not prone to creep or permanent deformation.
[0023] The filter body 1 has a fixed block 2 fixedly connected to the outer side near the top. The mounting support 4 has a limit hole 401 at the bottom near the outer side. The fixed block 2 has an ejection groove 204 inside. An ejection spring 201 is installed at the bottom of the ejection groove 204. A limit rod 203 is slidably connected in the ejection groove 204. The bottom of the limit rod 203 is connected to the ejection spring 201. The top of the limit rod 203 extends into the limit hole 401. A through groove 202 is opened on one side of the fixed block 2. The through groove 202 is connected to the ejection groove 204. A lever 205 is fixedly connected to the outer side of the limit rod 203. One end of the lever 205 protrudes from the outer surface of the fixed block 2 and is slidably connected to the through groove 202.
[0024] Before the filter body 1 is installed in the appropriate position, the limiting rod 203 is squeezed by the mounting bracket 4 and retracted into the ejector groove 204. At this time, the ejector spring 201 is squeezed and generates elastic force, which is applied to the limiting rod 203, so that the limiting rod 203 always abuts against the surface of the mounting bracket 4, and the top of the limiting rod 203 is not in the limiting hole 401. When the filter body 1 is screwed into the appropriate position, the top of the limiting rod 203 is inserted into the limiting hole 401 under the elastic force of the ejector spring 201, thus completing the limiting between the filter body 1 and the mounting bracket 4. This ensures that the threaded connection remains tight under the high-frequency vibration of the engine, preventing oil leakage.
[0025] Working principle;
[0026] When the filter body 1 is threaded to the bottom of the mounting bracket 4, the filter body 1 drives the fixing plate 101 to squeeze the sealing ring 3, so that the two top surfaces of the sealing ring 3 contact the groove surfaces of the fixing plate 101 and the mounting groove 402, and compress the sealing ring 3. During this process, the return spring 302 and the sealing ring 3 are squeezed and generate elastic force. Under the action of elastic force, the sealing ring 3, the fixing plate 101 and the groove surfaces of the mounting groove 402 are tightly fitted, and the limiting ring 1 301 and the limiting ring 2 303 approach each other and slide to limit each other. While limiting, they provide rigid support, so that the sealing ring 3 is not prone to creep or permanent deformation.
[0027] Before the filter body 1 is installed in the appropriate position, the limiting rod 203 is squeezed by the mounting bracket 4 and retracted into the ejector groove 204. At this time, the ejector spring 201 is squeezed and generates elastic force, which is applied to the limiting rod 203, so that the limiting rod 203 always abuts against the surface of the mounting bracket 4, and the top of the limiting rod 203 is not in the limiting hole 401. When the filter body 1 is screwed into the appropriate position, the top of the limiting rod 203 is inserted into the limiting hole 401 under the elastic force of the ejector spring 201, thus completing the limiting between the filter body 1 and the mounting bracket 4. This ensures that the threaded connection remains tight under the high-frequency vibration of the engine, preventing oil leakage.
[0028] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0029] The above provides a detailed description of a high-efficiency automotive oil filter sealing structure provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A high-efficiency automotive oil filter sealing structure, characterized in that, include: The filter body (1) has a mounting bracket (4) threadedly connected to the top of the filter body (1). A sealing assembly is provided between the filter body (1) and the mounting bracket (4). The sealing assembly includes: a sealing ring (3), a first limiting ring (301), a return spring (302), and a second limiting ring (303). A locking assembly is provided on the outside of the filter body (1) near the top position. The locking assembly includes: a fixing block (2), an ejection spring (201), a through groove (202), a limiting rod (203), an ejection groove (204), and a lever (205).
2. The high-efficiency automotive oil filter sealing structure according to claim 1, characterized in that, The filter body (1) is fixedly connected to the top of a fixing plate (101), and the mounting support (4) has a mounting groove (402) at the bottom.
3. The high-efficiency automotive oil filter sealing structure according to claim 2, characterized in that, A sealing ring (3) is installed between the fixing plate (101) and the mounting groove (402). The cross-sectional shape of the sealing ring (3) is "U". Limiting ring one (301) and limiting ring two (303) are respectively provided at the upper and lower ends of the groove of the sealing ring (3). The inner end face of the limiting ring one (301) is slidably connected to the outer end face of the limiting ring two (303). A reset spring (302) is slidably connected in the groove of the limiting ring one (301).
4. The high-efficiency automotive oil filter sealing structure according to claim 1, characterized in that, A fixing block (2) is fixedly connected to the outer side of the filter body (1) near the top. A limit hole (401) is opened at the bottom of the mounting bracket (4) near the outer side. A top groove (204) is provided inside the fixing block (2). A top spring (201) is installed at the bottom of the top groove (204).
5. The high-efficiency automotive oil filter sealing structure according to claim 4, characterized in that, A limiting rod (203) is slidably connected inside the ejection groove (204). The bottom of the limiting rod (203) is connected to the ejection spring (201), and the top of the limiting rod (203) extends into the limiting hole (401).
6. The high-efficiency automotive oil filter sealing structure according to claim 5, characterized in that, The fixed block (2) has a through groove (202) on one side, which is connected to the ejector groove (204). A lever (205) is fixedly connected to the outside of the limiting rod (203).
7. The high-efficiency automotive oil filter sealing structure according to claim 6, characterized in that, One end of the lever (205) protrudes from the outer surface of the fixing block (2) and is slidably connected to the through groove (202).