Motor driving wheel edge structure with inner side oil seal
By designing two internal and external oil seals and limit structures in the motor drive wheel edge structure, the problem of easy intrusion of the outer oil seals in the prior art is solved, significantly improving the waterproof performance and reliability, and extending the service life.
Patent Information
- Application Number
- CN202420578181.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-22
AI Technical Summary
Due to the compact structure and space limitations of the existing motor drive wheel edge structure, there is only one oil seal on the outside, which is easily invaded by mud, water, sand and gravel, resulting in a degradation of waterproof performance.
A motor drive wheel edge structure with an inner oil seal is designed, with two inner and outer oil seals on both sides, and a limit structure is designed at the bearings and oil seals to improve installation convenience and reliability.
Through the design of two internal and external oil seals, the sealing and waterproofness of the entire structure are maximized, the waterproof performance and reliability of the wheel edge structure are improved, and the service life is extended.
Smart Images
Figure CN222620782U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wheel hub motors, in particular to a motor driven wheel edge structure with an inner oil seal. Background Art
[0002] The hub motor is a wheel-side transmission mechanism designed by integrating the power system, transmission system and braking system. The wheel-side structure serves as the carrier of the mechanical part of the hub motor, so its strength and waterproof performance are extremely important.
[0003] The motor-driven wheel rim structure in the prior art usually has only one oil seal on the outside due to its compact structural design and space limitations. In harsh working environments, the oil seal is easily invaded by mud, water, sand and gravel, causing it to fail, thereby affecting its waterproof performance. Utility Model Content
[0004] How to improve the waterproofness of the existing motor drive wheel side structure while ensuring the compactness of the structure is a difficulty that needs to be solved. At the same time, optimizing the entire motor drive wheel side structure and improving its assembly convenience and reliability also need to be considered. Therefore, based on these problems, the utility model designs a motor drive wheel side structure with an inner oil seal that has good waterproof performance and high reliability.
[0005] The utility model is realized through the following technical scheme: a motor-driven wheel edge structure with an inner oil seal, comprising a coaxially arranged rotating shaft, a hub assembly, a smooth disc brake cover, and a stop edge cover, wherein the hub assembly is sleeved outside the rotating shaft, the smooth disc brake cover is sleeved outside the rotating shaft and is tightly connected to one end face of the hub assembly, the stop edge cover is sleeved outside the rotating shaft and is tightly connected to the other end face of the hub assembly, a first bearing is sleeved between the smooth disc brake cover and the rotating shaft, and a second bearing is sleeved between the stop edge cover and the rotating shaft.
[0006] In order to improve the waterproofness of the motor-driven wheel side structure, inner and outer oil seals are designed on both sides of the motor-driven wheel side structure. Specifically, a first outer oil seal is provided on the outer side of the first bearing, and a first inner oil seal is provided on the inner side of the first bearing. The first outer oil seal and the first inner oil seal are both sleeved between the light plate disc brake cover and the rotating shaft, a second outer oil seal is provided on the outer side of the second bearing, and a second inner oil seal is provided on the inner side of the second bearing. The second outer oil seal and the second inner oil seal are both sleeved between the stop edge cover and the rotating shaft.
[0007] In order to improve the reliability and installation convenience of the entire structure, a first limit stop is extended inwardly in the axial direction of the smooth disc brake cover, the inner end face of the first outer oil seal abuts against the outer side of the first limit stop, the outer end face of the first bearing abuts against the inner side of the first limit stop, and a second limit stop is extended inwardly in the axial direction of the stop edge cover, the inner end face of the second outer oil seal abuts against the outer side of the second limit stop, and the outer end face of the second bearing abuts against the inner side of the second limit stop.
[0008] In order to improve the lubrication performance and thus increase the service life of the entire motor-driven wheel side structure, a lubrication oil groove is provided on the rotating shaft.
[0009] The beneficial effects of the utility model are as follows: the motor-driven wheel side structure with an inner oil seal maximizes the sealing and dustproof properties of the entire structure by designing two oil seals on the outer and inner sides, thereby greatly improving the waterproofness of the wheel side structure and further ensuring the reliability of the entire hub motor; by designing a limiting structure at the bearing and the oil seal, the installation convenience and structural reliability are improved; in addition, the motor-driven wheel side structure with an inner oil seal has a compact structure and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a front view of the motor drive wheel side structure with inner oil seal of the utility model;
[0011] Figure 2 for Figure 1 AA section view;
[0012] Figure 3 It is a three-dimensional structural schematic diagram of the motor drive wheel side structure with an inner oil seal of the utility model;
[0013] In the figure: 1. rotating shaft; 11. lubricating oil groove; 2. wheel hub assembly; 3. smooth disc brake cover; 31. first limit stop; 4. stop edge cover; 41. second limit stop; 5. first bearing; 6. second bearing; 7. first outer oil seal; 8. first inner oil seal; 9. second outer oil seal; 10. second inner oil seal. DETAILED DESCRIPTION
[0014] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0015] like Figure 1-3The motor-driven wheel edge structure with an inner oil seal shown in the figure includes a coaxially arranged rotating shaft 1, a hub assembly 2, a smooth disc brake cover 3, and a stop edge cover 4, wherein the rotating shaft 1 is provided with a lubricating oil groove 11, the hub assembly 2 is sleeved outside the rotating shaft 1, the smooth disc brake cover 3 is sleeved outside the rotating shaft 1 and is tightly connected to one side end face of the hub assembly 2, the stop edge cover 4 is sleeved outside the rotating shaft 1 and is tightly connected to the other side end face of the hub assembly 2, a first bearing 5 is sleeved between the smooth disc brake cover 3 and the rotating shaft 1, and a second bearing 6 is sleeved between the stop edge cover 4 and the rotating shaft 1.
[0016] A first outer oil seal 7 is provided on the outer side of the first bearing 5, and a first inner oil seal 8 is provided on the inner side of the first bearing 5. The first outer oil seal 7 and the first inner oil seal 8 are both sleeved between the light plate disc brake cover 3 and the rotating shaft 1. A second outer oil seal 9 is provided on the outer side of the second bearing 6, and a second inner oil seal 10 is provided on the inner side of the second bearing 6. The second outer oil seal 9 and the second inner oil seal 10 are both sleeved between the stop edge cover 4 and the rotating shaft 1.
[0017] A first limit stop 31 is extended inwardly in the axial direction of the smooth disc brake cover 3, the inner end face of the first outer oil seal 7 abuts against the outer side of the first limit stop 31, the outer end face of the first bearing 5 abuts against the inner side of the first limit stop 31, and a second limit stop 41 is extended inwardly in the axial direction of the stop edge cover 4, the inner end face of the second outer oil seal 9 abuts against the outer side of the second limit stop 41, and the outer end face of the second bearing 6 abuts against the inner side of the second limit stop 41.
[0018] When the motor-driven wheel side structure with an inner oil seal is working, the first outer oil seal 7 and the second outer oil seal 9 can effectively prevent the entry of external mud, water and dust. The first inner oil seal 8 and the second inner oil seal 10 can effectively prevent the leakage of internal lubricating oil on the one hand, and on the other hand, it is equivalent to adding another protective layer to play a double insurance role to prevent the entry of external mud, water and dust. The cooperation between the inner and outer oil seals can maximize the sealing and waterproof properties of the entire structure, thereby improving the waterproof property of the entire motor-driven wheel side structure. The lubricating oil can lubricate internal bearings and other components through the lubricating oil groove 11 to achieve the best working state and improve the service life of the entire structure.
[0019] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.
[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0021] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0023] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. A motor-driven wheel edge structure with an inner oil seal, comprising a coaxially arranged rotating shaft, a hub assembly, a light plate disc brake cover, and a stopper edge cover, wherein the hub assembly is sleeved outside the rotating shaft, the light plate disc brake cover is sleeved outside the rotating shaft and is tightly connected to one end surface of the hub assembly, the stopper edge cover is sleeved outside the rotating shaft and is tightly connected to the other end surface of the hub assembly, a first bearing is sleeved between the light plate disc brake cover and the rotating shaft, and a second bearing is sleeved between the stopper edge cover and the rotating shaft, characterized in that: A first outer oil seal is provided on the outer side of the first bearing, and a first inner oil seal is provided on the inner side of the first bearing. The first outer oil seal and the first inner oil seal are both sleeved between the light plate disc brake cover and the rotating shaft. A second outer oil seal is provided on the outer side of the second bearing, and a second inner oil seal is provided on the inner side of the second bearing. The second outer oil seal and the second inner oil seal are both sleeved between the stop edge cover and the rotating shaft.
2. The motor drive wheel edge structure with inner oil seal according to claim 1, characterized in that: A first limit stop is extended inwardly in the axial direction of the smooth disc brake cover, the inner end face of the first outer oil seal abuts against the outer side of the first limit stop, the outer end face of the first bearing abuts against the inner side of the first limit stop, and a second limit stop is extended inwardly in the axial direction of the stop edge cover, the inner end face of the second outer oil seal abuts against the outer side of the second limit stop, and the outer end face of the second bearing abuts against the inner side of the second limit stop.
3. The motor drive wheel edge structure with inner oil seal according to claim 1, characterized in that: A lubricating oil groove is provided on the rotating shaft.