High-pressure hub framework oil seal

Abstract

The utility model provides a high pressure wheel hub framework oil seal relates to wheel hub oil seal field, a high pressure wheel hub framework oil seal includes outer framework body, inner support subassembly and main seal lip, through the outer framework body provides stable support and location for the oil seal, ensures the whole structure steadiness, in the inner support subassembly, the main seal lip is in the inner support subassembly. The longitudinal supporting pieces and the transverse supporting pieces are arranged in the supporting grooves in a wave-shaped annular staggered mode, the bending strength is greatly improved, radial loads generated by rotation of a hub are effectively dispersed, oil seal deformation is prevented, the buffer grooves in the surface of the oil seal can absorb mechanical vibration energy, it is guaranteed that the oil seal normally works in the high-pressure and vibration environment, and a stable foundation is provided for the main sealing lip and a dustproof component; the main sealing lip effectively seals lubricating oil in the hub by means of material characteristics and special lip design, leakage is prevented, the dustproof component forms a protective barrier through the dustproof lip and the fastening spring, external impurities are prevented from entering the hub, the hub can normally operate under the complex working condition environment, the service life of the hub is effectively prolonged, and the reliability of the hub is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wheel hub oil seal, especially to a high pressure wheel hub framework oil seal. BACKGROUND

[0002] The high pressure wheel hub framework oil seal plays a vital role in the wheel hub system of modern vehicles such as cars, trucks, etc. Their main function is to prevent the leakage of lubricating oil or grease inside the wheel hub, which is crucial for maintaining the effective operation of the wheel hub bearing and other related components. During vehicle driving, the wheel hub rotates at high speed, which causes the internal lubricating oil to have a tendency to leak outward under the action of centrifugal force and pressure. To address this challenge, the high pressure wheel hub framework oil seal is designed to closely fit the gap between the shaft and the wheel hub shell, thereby forming a solid and effective sealing barrier. This design not only prevents the leakage of lubricating oil, ensuring that the wheel hub always has enough lubricant to support normal mechanical operation, but also effectively blocks the intrusion of dust, moisture, and sand from the external environment, especially in off-road vehicles or vehicles that often drive on rough roads.

[0003] However, the support structure of traditional high pressure wheel hub oil seals is simple in design, usually using traditional rectangular cross-section supports. This structure has low bending strength and is prone to deformation under the radial load generated by high-speed rotation of the wheel hub. When the support structure deforms, it can damage the overall structural stability of the oil seal, leading to a decline in sealing performance. In some high-speed industrial equipment, the support structure cannot effectively disperse the load, and the oil seal may be damaged within a short period of time, reducing the service life and reliability of the oil seal.

[0004] Therefore, it is necessary to provide a new high pressure wheel hub framework oil seal to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the utility model provides a high pressure wheel hub framework oil seal.

[0006] The high pressure wheel hub framework oil seal provided by the utility model comprises an outer framework body, an inner support assembly, and a main sealing lip. The outer framework body has a support groove inside for placing the inner support assembly. The inner support assembly is staggered inside the support groove. One side of the outer framework body is integrally fixedly connected with the main sealing lip.

[0007] The inner support assembly comprises longitudinal supports and transverse supports. The longitudinal supports and the transverse supports are staggered in a wave-shaped ring inside the support groove. The outer surfaces of the longitudinal supports and the transverse supports are in close contact with the inner side walls of the support groove.

[0008] Preferably, the vertical cross-sections of the longitudinal support and the transverse support are arranged in an "I" shape, and multiple buffer grooves are equally spaced on both sides of the longitudinal support and the transverse support that are in contact with the support groove.

[0009] Preferably, a dustproof component is fixedly provided on one side of the outer frame, and the dustproof component and the main sealing lip are located on the same side surface of the outer frame.

[0010] Preferably, the dustproof component includes a dustproof lip, and the dustproof lip and the side adjacent to the outer frame are integrally fixedly connected.

[0011] Preferably, the dustproof component further includes a fastening spring, and a placement groove is provided inside the main sealing lip. The fastening spring is sleeved inside the placement groove, and the outer surface of the fastening spring is in contact with the inner sidewall of the placement groove.

[0012] Preferably, a sealing cavity is formed on the side surface of the exoskeleton adjacent to the main sealing lip.

[0013] Compared with related technologies, the high-pressure wheel hub skeleton oil seal provided by this utility model has the following advantages:

[0014] Beneficial effects:

[0015] The outer skeleton provides stable support and positioning for the oil seal, ensuring the overall structural stability. In the internal support assembly, the longitudinal and transverse support members are arranged in a wave-like staggered pattern, while the cross-sections are arranged in an "I" shape within the support groove. This significantly improves the bending strength compared to traditional rectangular cross-sections, effectively dispersing the radial load generated by the hub rotation and preventing oil seal deformation. The buffer grooves on its surface can absorb 15%-20% of the mechanical vibration energy, ensuring the oil seal operates normally under high pressure and vibration environments, providing a stable foundation for the main sealing lip and dustproof components. The main sealing lip, with its material properties and special lip design, effectively seals the lubricating oil inside the hub, preventing leakage. The dustproof components, through the dustproof lip and fastening spring, form a protective barrier to prevent external impurities from entering the hub. All components work together to enable the hub to operate normally under complex conditions such as high pressure, high speed, and wide temperature range, effectively improving the hub's service life and reliability. Attached Figure Description

[0016] Figure 1 A schematic diagram showing the disassembled structure of a high-pressure wheel hub frame oil seal provided by this utility model;

[0017] Figure 2 A cross-sectional structural schematic diagram of a high-pressure wheel hub skeleton oil seal provided by this utility model;

[0018] Figure 3The utility model provides a kind of split profile schematic diagram of high-pressure hub skeleton oil seal provided by the utility model;

[0019] Figure 4 The utility model provides the partial structure schematic diagram of transverse support piece.

[0020] Marked number in drawing:1, outer skeleton body;11, support groove;12, sealed cavity;2, inner support assembly;21, longitudinal support piece;22, transverse support piece;23, buffer groove;3, main sealing lip;4, dustproof component;41, dustproof lip;42, fastening spring;43, placing groove. DETAILED DESCRIPTION

[0021] The utility model is further described below in connection with drawing and embodiment.

[0022] Please combine with Figure 1 , Figure 2 , Figure 3 And Figure 4 Among them, Figure 1 The utility model provides a kind of split structure schematic diagram of high-pressure hub skeleton oil seal provided by the utility model; Figure 2 The utility model provides a kind of profile structure schematic diagram of high-pressure hub skeleton oil seal provided by the utility model; Figure 3 The utility model provides a kind of split profile schematic diagram of high-pressure hub skeleton oil seal provided by the utility model; Figure 4 The utility model provides the partial structure schematic diagram of transverse support piece.

[0023] In the specific implementation process, as Figures 1-4 The utility model provides a kind of high-pressure hub skeleton oil seal, including: outer skeleton body 1, inner support assembly 2 and main sealing lip 3, the support groove 11 for placing inner support assembly 2 is equipped in outer skeleton body 1 inside, inner support assembly 2 is staggered in support groove 11 inside, and the side of outer skeleton body 1 is integrally fixedly connected with main sealing lip 3;

[0024] Inner support assembly 2 includes longitudinal support piece 21 and transverse support piece 22, longitudinal support piece 21 and transverse support piece 22 are staggered in support groove 11 inside and present wave shape ring, and the both sides outer surfaces of longitudinal support piece 21 and transverse support piece 22 are all fitted with support groove 11 inner wall;

[0025] In one specific embodiment, the vertical cross section of longitudinal support piece 21 and transverse support piece 22 presents 'G' character shape setting, and the both sides surfaces that longitudinal support piece 21 and transverse support piece 22 are fitted with support groove 11 are all opened with multiple buffer grooves 23 at equal distance, and the side surface of outer skeleton body 1 adjacent main sealing lip 3 is opened with sealed cavity 12;

[0026] It should be noted that the inner support assembly 2 is composed of longitudinal support members 21 and transverse support members 22, which are interwoven, and their vertical cross-sections are arranged in an "I" shape. This unique structural design greatly improves the bending strength of the support members, increasing it by 30% compared to the traditional rectangular cross-section. During the rotation of the wheel hub, radial loads are generated, and the longitudinal and transverse support members 22 can effectively distribute these loads, preventing the oil seal from deforming due to uneven stress. In addition, multiple buffer grooves 23 equidistantly opened on both sides of the support members can absorb 15%-20% of the mechanical vibration energy during wheel hub operation.

[0027] A dustproof component 4 is fixedly provided on one side of the outer frame 1. The dustproof component 4 and the main sealing lip 3 are located on the same side surface of the outer frame 1.

[0028] The dustproof component 4 includes a dustproof lip 41, which is integrally and fixedly connected to the side of the outer frame 1 adjacent to it.

[0029] The dustproof component 4 also includes a fastening spring 42. The main sealing lip 3 has a placement groove 43 inside. The fastening spring 42 is sleeved inside the placement groove 43, and the outer surface of the fastening spring 42 is in contact with the inner wall of the placement groove 43.

[0030] The working principle provided by this utility model is as follows:

[0031] During actual operation of the wheel hub, the outer frame 1 provides stable support and positioning for the entire oil seal. The inner support component 2, through its unique wave-shaped interlaced structure and buffering function, ensures that the oil seal does not deform under high pressure and vibration environments, providing a stable working foundation for the main sealing lip 3 and the dustproof component 4. The main sealing lip 3 utilizes its material properties and special lip design to effectively seal the lubricating oil inside the wheel hub, preventing leakage. The dustproof component 4 forms a protective barrier outside the oil seal, preventing external impurities from entering the wheel hub. The various components work together to ensure the normal operation of the wheel hub under complex conditions such as high pressure, high speed, and wide temperature range, improving the service life and reliability of the wheel hub.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high pressure wheel hub carrier oil seal characterized by, Include: Exoskeleton body (1), inner support assembly (2) and main sealing lip (3), the exoskeleton body (1) is internally provided with support groove (11) for placing the inner support assembly (2), the inner support assembly (2) is staggered in the support groove (11) inside, one side of the exoskeleton body (1) is integrally fixedly connected with the main sealing lip (3); The inner support assembly (2) includes longitudinal support (21) and transverse support (22), the longitudinal support (21) and the transverse support (22) are staggered in the support groove (11) inside in the form of wave-shaped ring, and the two side surfaces of the longitudinal support (21) and the transverse support (22) are fitted with the inner side wall of the support groove (11).

2. The high-pressure hub carrier oil seal according to claim 1, characterized in that The vertical cross section of the longitudinal support (21) and the transverse support (22) is arranged in the form of 'G' character, and a plurality of buffer grooves (23) are equidistantly formed in the two side surfaces of the longitudinal support (21) and the transverse support (22) fitted with the support groove (11).

3. The high-pressure hub carrier oil seal according to claim 2, characterized in that The exoskeleton body (1) is fixedly provided with a dustproof component (4) on one side, and the dustproof component (4) and the main sealing lip (3) are located on the same side surface of the exoskeleton body (1).

4. The high-pressure hub skeleton oil seal of claim 3, wherein, The dustproof component (4) includes a dustproof lip (41), and the dustproof lip (41) and the exoskeleton body (1) are integrally fixedly connected on one side.

5. The high-pressure hub skeleton oil seal of claim 4, wherein, The dustproof component (4) further includes a fastening spring (42), the main sealing lip (3) is internally provided with a placing groove (43), the fastening spring (42) is sleeved in the placing groove (43), and the outer side surface of the fastening spring (42) is fitted with the inner side wall of the placing groove (43).

6. The high-pressure hub skeleton oil seal of claim 5, wherein, The exoskeleton body (1) is provided with a sealing cavity (12) on one side surface adjacent to the main sealing lip (3).

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