High and low temperature resistant ACM sealing ring

Abstract

The utility model belongs to the technical field of sealing ring, specifically disclose a kind of high and low temperature ACM sealing ring, including support body, the skeleton and spring that are enclosed in the inside of support body, the spring is used to tighten the support body;The support body includes the inner lip, connecting lip and outer lip sequentially arranged from inside to outside, the connecting lip is located between the lower end of inner lip and the lower end of outer lip, and the lower end of connecting lip is equipped with connecting flash.The utility model provides a kind of high and low temperature ACM sealing ring, and inner lip is composed of upper end lip, first abutment lip and second abutment lip, and upper end lip can effectively block dust, mud and other pollutants in external environment from invading sealing area after assembly, providing the first line of defense for internal system;First abutment lip and second abutment lip work cooperatively, and form a double contact interface closely with shaft.This design significantly improves the sealing reliability, ensures that the lubricating oil in the equipment interior does not leak outward, and maintains the stable operation of lubricating system.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and in particular to a high and low temperature resistant ACM sealing ring. Background Technology

[0002] In a vehicle's drivetrain, the differential is a crucial mechanism that connects the two drive wheels, allowing them to rotate at different speeds. It typically consists of core components such as left and right half-shaft gears, planetary gears, and a gear carrier. The primary function of the differential is to automatically adjust the speed difference between the left and right drive wheels when the vehicle is turning or traveling on rough terrain, ensuring that both wheels achieve pure rolling motion, thereby improving vehicle handling stability and reducing tire wear.

[0003] However, during vehicle operation, slight relative displacement, vibration, or vibration inevitably occurs between the left and right half-shafts of the differential. This places dynamic adaptability requirements on its sealing structure. In existing technology, differentials typically rely on sealing rings to achieve dynamic sealing at the rotating shaft. These sealing rings not only need to withstand immersion in lubricating oil but must also effectively adapt to the aforementioned dynamic operating conditions to maintain reliable sealing performance. If the seal fails, it will lead to two serious consequences: First, lubricating oil leakage: the lubricating oil inside the differential may leak through the sealing gap, causing insufficient lubrication, accelerating gear wear, and affecting transmission efficiency and component life; second, external contaminant intrusion: dust, mud, and other contaminants from the external environment may enter the differential through the failed sealing gap. Dust will cause lubricating oil contamination and deterioration, significantly reducing its lubrication effect; while the intrusion of mud and water will cause corrosion of metal parts such as gears, and in severe cases, may lead to pitting or damage to the gears, threatening driving safety.

[0004] During vehicle operation, there may be slight vibrations or jumps on the shafts on both sides of the differential. The sealing ring needs to be able to adapt to these dynamic changes, maintain sealing performance, and prevent lubricating oil from being lost through the sealing gap during movement. If dust enters, it may cause lubricating oil contamination and reduce lubrication effect; if mud and water enter, it will cause gear corrosion, affect transmission efficiency, or even cause gear damage.

[0005] Therefore, how to ensure the long-term and reliable operation of the seals on both sides of the differential shaft under dynamic operating conditions, and effectively prevent lubricating oil leakage and the intrusion of external contaminants, has become an urgent problem to be solved in this field. Utility Model Content

[0006] This invention provides a high and low temperature resistant ACM sealing ring, which can solve the problems of lubricating oil leakage and external contaminant intrusion in the sealing rings on both sides of the differential shaft in the prior art.

[0007] A high and low temperature resistant ACM sealing ring includes a support body, a skeleton enclosed inside the support body, and a spring, wherein the spring is used to clamp the support body; The support includes an inner lip, a connecting lip, and an outer lip arranged sequentially from the inside to the outside. The connecting lip is located between the lower end of the inner lip and the lower end of the outer lip, and the lower end of the connecting lip is provided with a connecting burr. The inner lip includes an upper lip and a first abutting lip and a second abutting lip located below the upper lip. The upper lip, the first abutting lip, and the second abutting lip are all located on the connecting lip at the end away from the outer lip. The openings of both the first and second abutting lips are inclined toward the plane where the bottom surface of the outer lip is located.

[0008] Furthermore, a receiving groove is provided on the outer side of the upper lip, and the spring is disposed in the receiving groove.

[0009] Furthermore, a mating protrusion is provided on the inner side of the upper lip.

[0010] Furthermore, the cross-sectional shape of the mating protrusion is conical.

[0011] Furthermore, an annular groove is provided at the bottom of the outer lip.

[0012] Furthermore, the openings of both the first and second abutting lips are inclined toward the rotation axis of the connecting lip.

[0013] Furthermore, the first abutting lip is located above the second abutting lip; The length of the first abutting lip is less than the length of the second abutting lip.

[0014] Furthermore, the connection between the upper lip and the first abutting lip is arranged in an arc shape.

[0015] Furthermore, annular notches are provided at both the upper and lower ends of the outer lip.

[0016] Furthermore, an annular notch is provided at one end of the top of the connecting lip near the outer lip.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides a high and low temperature resistant ACM sealing ring. The inner lip consists of an upper lip, a first abutment lip, and a second abutment lip. During actual assembly, the upper lip effectively prevents dust, mud, water, and other contaminants from the external environment from entering the sealing area, providing the first line of defense for the internal system. The first and second abutment lips work together to form a tightly fitting double contact interface with the shaft. This design significantly improves sealing reliability, ensuring that the lubricating oil inside the equipment does not leak out and maintaining the stable operation of the lubrication system.

[0018] 2. This utility model provides a high and low temperature resistant ACM sealing ring that integrates external anti-fouling (borne by the upper lip) and internal anti-leakage (borne by the first and second abutment lips) functions into one, achieving all-round sealing protection. That is, by effectively isolating external contaminants and preventing internal lubricant loss, this sealing ring design can significantly reduce equipment failures caused by wear or insufficient lubrication due to contamination, thereby extending the service life of the equipment and reducing maintenance costs.

[0019] 3. In this utility model, the layered design of the first and second abutting lips helps to distribute the contact pressure more evenly. Moreover, the multi-layered abutting lips, compared with the single-layer structure, reduce the contact area with the shaft. While ensuring a good sealing effect, it can reduce lip wear and improve the durability of the sealing ring itself. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 A cross-sectional view of the structure of a high and low temperature resistant ACM sealing ring assembled with a differential side shaft and mudguard ring provided by this utility model; Figure 2 A cross-sectional view of a high and low temperature resistant ACM sealing ring provided by this utility model.

[0021] Explanation of reference numerals in the attached drawings: 100, differential side shaft; 200, mudguard ring; 1, support body; 2, frame; 3, spring; 4, inner lip; 5, connecting lip; 6, outer lip; 7, connecting flash; 41, upper lip; 42, first abutting lip; 43, second abutting lip; 44, receiving groove; 45, mating protrusion; 51, annular notch two; 61, annular groove; 62, annular notch one. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0023] like Figures 1 to 2 As shown, the present invention provides a high and low temperature resistant ACM sealing ring, which can be sleeved on the outside of the differential side shaft 100. Specifically, the high and low temperature resistant ACM sealing ring includes a support body 1, a skeleton 2 enclosed inside the support body 1, and a spring 3. The spring 3 is used to tighten the support body 1. The support body 1 includes an inner lip 4, a connecting lip 5 and an outer lip 6 arranged sequentially from the inside to the outside. The connecting lip 5 is located between the lower end of the inner lip 4 and the lower end of the outer lip 6, and the lower end of the connecting lip 5 is provided with a connecting burr 7. The inner lip 4 includes an upper lip 41 and a first abutting lip 42 and a second abutting lip 43 located below the upper lip 41. The upper lip 41, the first abutting lip 42 and the second abutting lip 43 are all located on the connecting lip 5 at the end away from the outer lip 6. The high and low temperature resistant ACM seal ring is used on the two side shafts of the differential. That is, the high and low temperature resistant ACM seal ring is sleeved on the outside of the differential side shaft 100. The high and low temperature resistant ACM seal ring is composed of a support body 1, a frame 2 and a spring 3. The support body 1 covers the outside of the frame 2. The frame 2 provides support for the support body 1, while the spring 3 is used to tighten the support body 1 and improve the stability of the support body 1 structure. Furthermore, the support body 1 includes an inner lip 4, a connecting lip 5, and an outer lip 6 arranged sequentially from the inside to the outside. The inner lip 4, connecting lip 5, and outer lip 6 can be integrally formed. The connecting lip 5 is located between the lower end of the inner lip 4 and the lower end of the outer lip 6. The lower end of the connecting lip 5 is provided with a connecting flash 7, which is an integral design and located at the lower end of the connecting lip 5. The end of the connecting flash 7 away from the connecting lip 5 abuts against the mudguard ring 200. The mudguard ring 200 is sleeved on the outside of the differential side shaft 100 and is located below the high and low temperature resistant ACM seal ring. Through this arrangement, the high and low temperature resistant ACM seal ring and the mudguard ring 200 are used in conjunction, and the cooperative structural design effectively isolates external contaminants. The inner lip 4 includes an upper lip 41 and a first abutting lip 42 and a second abutting lip 43 located below the upper lip 41. The upper lip 41, the first abutting lip 42 and the second abutting lip 43 are all located on the connecting lip 5 at the end away from the outer lip 6. In this arrangement, the upper lip 41 is located above the inner side of the connecting lip 5, while the first abutting lip 42 and the second abutting lip 43 are located at the lower end of the inner side of the connecting lip 5. Furthermore, the lips of both the first abutting lip 42 and the second abutting lip 43 are inclined toward the rotation axis of the connecting lip 5. Specifically, the rotation axis of the connecting lip 5 coincides with the central axis of the high and low temperature resistant ACM sealing ring. The lip of the first abutting lip 42 is inclined toward the rotation axis of the connecting lip 5, specifically, the lip of the first abutting lip 42 is inclined downward toward the rotation axis of the connecting lip 5. Similarly, the lip of the second abutting lip 43 is inclined toward the rotation axis of the connecting lip 5, specifically, the lip of the second abutting lip 43 is inclined downward toward the rotation axis of the connecting lip 5. This high and low temperature resistant ACM sealing ring, after assembly, effectively prevents dust, mud, water and other contaminants from the external environment from entering the sealing area, providing a strong first line of defense for the internal system. The first abutting lip 42 and the second abutting lip 43 form a tight double contact interface with the shaft, ensuring that the lubricating oil inside the equipment will not leak out and maintaining the stable operation of the lubrication system. The upper lip 41 achieves a robust barrier against external contaminants, and the internal double-lip structure provides a reliable lubricating oil seal, forming a highly efficient sealing system that protects against both internal and external contaminants, ultimately ensuring the long-term reliable operation of the equipment.

[0024] like Figures 1 to 2 As shown, in some embodiments of this utility model, a receiving groove 44 is provided on the outer side of the upper lip 41, and the spring 3 is disposed in the receiving groove 44. The receiving groove 44 provides installation space for the spring 3. In addition, the spring 3 is disposed in the receiving groove 44 on the outer side of the upper lip 41, which can play a role in tightening the upper lip 41 during the assembly process, further improving the sealing performance when the sealing ring is assembled with the shaft.

[0025] like Figures 1 to 2 As shown, in some embodiments of this utility model, there is a certain distance between the outer side of the upper lip 41 and the inner side of the outer lip 6. The appropriate spacing between the outer lip 6 and the upper lip 41 provides a crucial deformation buffer space for the sealing ring. When the sealing ring is subjected to external pressure or shaft vibration, this spacing can effectively absorb stress, preventing the outer lip 6 and the upper lip 41 from twisting and deforming due to compression, thereby maintaining their original functional shape and ensuring long-term stable contact of the sealing interface; Furthermore, the spacing design gives the sealing ring greater structural flexibility. During assembly, the outer lip 6 can deform independently to adapt to unevenness of the installation tool or shaft surface, reducing the pulling force on the upper lip 41 and avoiding lip tearing or permanent deformation caused by forced assembly, thereby improving installation reliability and yield.

[0026] like Figures 1 to 2 As shown, in some embodiments of this utility model, a mating protrusion 45 is provided on the inner side of the upper lip 41; The fitting protrusion 45 is used to improve the tightness of the fit with the differential side shaft 100. The fitting protrusion 45 can also be used to adapt to the outer ring of the differential side shaft 100. The additional mating protrusion 45 on the inner side of the upper lip can form a customized interference fit with the surface of the differential side shaft 100. After assembly, the protrusion produces directional elastic deformation, precisely filling the microscopic unevenness of the shaft surface, greatly improving the tightness of the contact interface, completely blocking the penetration path of external contaminants (dust / mud), and strengthening the absolute sealing of the first line of defense.

[0027] like Figures 1 to 2As shown, in some embodiments of this utility model, the cross-sectional shape of the protrusion 45 is conical; The cross-sectional shape of the protrusion 45 is conical. Specifically, the tip of the cone is set inward. During assembly, the differential side shaft 100 is fitted inside the sealing ring, the tip of the cone is set towards the differential side shaft 100, and the tip of the cone can fit tightly with the differential side shaft 100. The tip of the cone can also be adapted to the outer ring of the differential side shaft 100, thereby enhancing the sealing performance between the upper lip 41 and the differential side shaft 100.

[0028] like Figures 1 to 2 As shown, in some embodiments of this utility model, an annular groove 61 is provided at the bottom of the outer lip 6; the annular groove 61 forms a flexible hinge area at the root of the outer lip 6, which absorbs the bending stress generated by the radial clamping force during assembly.

[0029] like Figures 1 to 2 As shown, in some embodiments of this utility model, the cross-sectional shape of the skeleton 2 is L-shaped; Specifically, the skeleton 2 includes an upper ring and a lower ring located at the lower end of the inner side of the upper ring. The upper ring and the lower ring are connected and have an L-shaped cross-section. The upper ring is enclosed in the outer lip 6, a part of the lower ring is enclosed in the outer lip 6, and the other part of the lower ring is enclosed in the connecting lip 5. The skeleton 2 provides support for the support body.

[0030] like Figures 1 to 2 As shown, in some embodiments of this utility model, the first abutting lip 42 is located above the second abutting lip 43; the length of the first abutting lip 42 is less than the length of the second abutting lip 43; During actual assembly, the ends of the first abutting lip 42 and the second abutting lip 43 that are away from the connecting lip 5 are in contact with the differential side shaft 100. Positioning the first abutting lip 42 above the second abutting lip 43, and with the length of the first abutting lip 42 being less than the length of the second abutting lip 43, helps to form a more effective double sealing structure, which helps to distribute the contact pressure more evenly. While ensuring a good sealing effect, it can reduce lip wear and improve the durability of the sealing ring itself.

[0031] like Figures 1 to 2 As shown, in some embodiments of this utility model, the connection between the upper lip 41 and the first abutting lip 42 is arranged in an arc shape; the arc shape of the connection is beneficial to eliminating stress concentration and improving fatigue life.

[0032] like Figures 1 to 2As shown, in some embodiments of this utility model, annular notches 62 are provided at both the upper and lower ends of the outer lip 6, forming a bidirectional elastic deformation space. During assembly, the notch structure can guide the sealing ring to generate controllable deformation along the axial direction, reducing the frictional resistance with the mounting hole / shaft, making the assembly operation more labor-saving and efficient, especially suitable for automated assembly scenarios.

[0033] like Figures 1 to 2 As shown, in some embodiments of this utility model, an annular notch 51 is provided at the top of the connecting lip 5 near the outer lip 6; the design of the annular notch 51 can improve the bending resistance life of the sealing ring.

[0034] This invention provides a high and low temperature resistant ACM sealing ring. The inner lip 4 consists of an upper lip 41, a first abutting lip 42, and a second abutting lip 43. During actual assembly, the upper lip 4 effectively prevents dust, mud, water, and other contaminants from the external environment from entering the sealing area, providing the first line of defense for the internal system. The first abutting lip 42 and the second abutting lip 43 work together to form a tightly fitting double contact interface with the shaft. This design significantly improves sealing reliability, ensuring that the lubricating oil inside the equipment does not leak out and maintaining the stable operation of the lubrication system.

[0035] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A high and low temperature resistant ACM sealing ring, characterized in that, It includes a support body (1), a skeleton (2) enclosed inside the support body (1), and a spring (3), the spring (3) being used to clamp the support body (1); The support (1) includes an inner lip (4), a connecting lip (5) and an outer lip (6) arranged sequentially from the inside to the outside. The connecting lip (5) is located between the lower end of the inner lip (4) and the lower end of the outer lip (6). The lower end of the connecting lip (5) is provided with a connecting burr (7). The inner lip (4) includes an upper lip (41) and a first abutting lip (42) and a second abutting lip (43) located below the upper lip (41). The upper lip (41), the first abutting lip (42) and the second abutting lip (43) are all located on the connecting lip (5) at the end away from the outer lip (6).

2. The high and low temperature resistant ACM sealing ring according to claim 1, characterized in that, The upper lip (41) has a receiving groove (44) on its outer side, and the spring (3) is located in the receiving groove (44).

3. The high and low temperature resistant ACM sealing ring according to claim 1, characterized in that, The upper lip (41) has a mating protrusion (45) on its inner side.

4. The high and low temperature resistant ACM sealing ring according to claim 3, characterized in that, The cross-sectional shape of the mating protrusion (45) is conical.

5. The high and low temperature resistant ACM sealing ring according to claim 1, characterized in that, The bottom of the outer lip (6) is provided with an annular groove (61).

6. The high and low temperature resistant ACM sealing ring according to claim 1, characterized in that, The openings of the first abutting lip (42) and the second abutting lip (43) are both inclined toward the rotation axis of the connecting lip (5).

7. The high and low temperature resistant ACM sealing ring according to claim 1, characterized in that, The first abutting lip (42) is located above the second abutting lip (43); The length of the first abutting lip (42) is less than the length of the second abutting lip (43).

8. The high and low temperature resistant ACM sealing ring according to claim 1, characterized in that, The connection between the upper lip (41) and the first abutting lip (42) is arranged in an arc shape.

9. The high and low temperature resistant ACM sealing ring according to claim 1, characterized in that, The outer lip (6) has an annular notch (62) at both the upper and lower ends.

10. A high and low temperature resistant ACM sealing ring according to claim 1, characterized in that, The top of the connecting lip (5) near the outer lip (6) has an annular notch 2 (51).

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