Elastic spacer bush structure and heavy truck hub bearing applying same

Abstract

The utility model discloses an elastic spacer bush structure and a heavy truck hub bearing applying the same, which are characterized by comprising an elastic mechanism, the elastic mechanism comprises an elastic sleeve, and a hub bearing is arranged in an inner cavity of the elastic sleeve. The hub bearing is placed in the inner cavity of the elastic sleeve, the elastic sleeve is made of various materials such as polyurethane, rubber, silica gel, foaming materials and thermoplastic elastomers, the elastic sleeve made of the materials can tightly wrap the hub bearing, the preliminary fixing and buffering effects are achieved, the elastic sleeve with the hub bearing is placed in the inner cavity of the hub, and the hub bearing can be fixed and buffered. The fixing ring piece and the inner cavity of the hub are installed in a matched mode, the stable position of the elastic spacer bush structure in the inner cavity of the hub is guaranteed, when a vehicle passes through a bumpy road surface, impact force can be transmitted to the elastic spacer bush structure through the hub, the elastic spacer bush structure is firstly impacted and elastically deforms to absorb and buffer the impact force, and the service life of a hub bearing is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub bearing technology, specifically to an elastic spacer structure and a heavy truck wheel hub bearing using this structure. Background Technology

[0002] Wheel hub bearings are one of the key components of automobiles. Located between the wheel and the axle, they are a type of composite bearing that typically includes an inner ring, outer ring, rolling elements, cage, and seals. They are mainly used for load bearing and providing precise guidance for the rotation of the wheel hub. They bear both axial and radial loads, while also providing sealing protection to prevent moisture, dust, and other impurities from entering the interior, ensuring the bearing's long life and stability.

[0003] However, during the use of wheel hub bearings, when the wheels pass over these uneven road surfaces, impact forces are generated. The elastic components can absorb these impact forces to a certain extent, reducing the direct impact force on the wheel hub bearings. However, the elastic materials are of a single type and generally wear out more severely. As the elastic components wear out severely, their ability to absorb and buffer the impact forces generated during vehicle operation will decrease significantly, causing the wheel hub bearings to be subjected to greater impact loads, affecting the normal operation of the bearings, and aggravating the wear of the internal parts of the bearings. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide an elastic spacer structure and a heavy-duty truck wheel hub bearing using this structure. This structure possesses the advantages of wear-resistant elastic components and solves the problem that during the use of wheel hub bearings, when the wheel passes over uneven road surfaces, impact forces are generated. While the elastic component can absorb these impact forces to a certain extent, reducing their direct effect on the wheel hub bearing, the elastic material is generally of a single type and wears significantly. This leads to a substantial decrease in the elastic component's ability to absorb and buffer the impact forces generated during vehicle operation, causing the wheel hub bearing to be subjected to greater impact loads, affecting the normal operation of the bearing, and exacerbating the wear of internal bearing components.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elastic spacer structure and a heavy-duty truck wheel hub bearing using this structure, characterized in that it includes:

[0006] An elastic mechanism includes an elastic sleeve, the inner cavity of which is provided with a hub bearing, and a fixing ring is provided on the surface of the elastic sleeve, the fixing ring being disposed in the inner cavity of the hub.

[0007] As a preferred embodiment of this invention, the elastic sleeve is made of polyurethane.

[0008] As a preferred embodiment of this invention, the elastic sleeve is made of rubber.

[0009] As a preferred embodiment of this invention, the elastic sleeve is made of silicone.

[0010] As a preferred embodiment of this invention, the elastic sleeve is made of foam material.

[0011] As a preferred embodiment of this invention, the material of the elastic sleeve includes thermoplastic elastomer.

[0012] As a preferred embodiment of this invention, the fixing ring is made of aluminum alloy and steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model utilizes a combination of a wheel hub bearing, an elastic sleeve, polyurethane, rubber, silicone, foaming material, thermoplastic elastomer, and a retaining ring. The wheel hub bearing is placed within the inner cavity of the elastic sleeve, which is made of various materials including polyurethane, rubber, silicone, foaming material, and thermoplastic elastomer. These materials tightly enclose the wheel hub bearing, providing initial fixation and cushioning. The elastic sleeve with the wheel hub bearing is then placed into the inner cavity of the wheel hub, with the retaining ring fitting into the inner cavity. This ensures the stable position of the elastic sleeve structure within the wheel hub cavity. When a vehicle travels over bumpy roads, the impact force is transmitted through the wheel hub to the elastic sleeve structure. The elastic sleeve is the first to be impacted, undergoing elastic deformation to absorb and cushion these impact forces, thus improving the service life of the wheel hub bearing.

[0015] 2. This utility model, through the inclusion of polyurethane, can assist in the use of wheel hub bearings. Polyurethane has excellent elasticity and toughness. When the wheel is subjected to impact force and it is transmitted to the wheel hub bearing, the polyurethane elastic sleeve can effectively buffer these impact forces and absorb energy through its own elastic deformation, thereby reducing the instantaneous impact load borne by the wheel hub bearing. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This utility model Figure 1 3D exploded structure diagram of the wheel hub bearing;

[0018] Figure 3 This utility model Figure 2 Schematic diagram of medium elastic sleeve material

[0019] Figure 4 This utility model Figure 2 Schematic diagram of the three-dimensional exploded structure of the central fixed ring component. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 4 As shown, this utility model provides an elastic spacer structure and a heavy-duty truck wheel hub bearing using this structure, characterized in that it includes:

[0022] The elastic mechanism 100 includes an elastic sleeve 101, a hub bearing 102 is provided in the inner cavity of the elastic sleeve 101, and a fixing ring 103 is provided on the surface of the elastic sleeve 101, which is located in the inner cavity of the hub.

[0023] refer to Figure 3 The elastic sleeve 101 is made of polyurethane 101a.

[0024] As a technical optimization of this utility model, the polyurethane 101a can assist the wheel hub bearing 102 in its use. Polyurethane has excellent elasticity and toughness. When the wheel is subjected to impact force and it is transmitted to the wheel hub bearing, the polyurethane elastic sleeve can effectively buffer these impact forces and absorb energy through its own elastic deformation, thereby reducing the instantaneous impact load borne by the wheel hub bearing.

[0025] refer to Figure 3 The elastic sleeve 101 is made of rubber 101b.

[0026] As a technical optimization of this utility model, the rubber 101b can assist the wheel hub bearing 102 in use. The rubber material has good flexibility and conformability, and can be tightly fitted between the wheel hub bearing and the inner cavity of the wheel hub. The tight fit can effectively prevent dust, moisture and other impurities from entering the interior of the wheel hub bearing.

[0027] refer to Figure 3 The material of elastic sleeve 101 includes silicone 101c.

[0028] As a technical optimization of this utility model, the silicone 101c can assist the wheel hub bearing 102 in use. Silicone has excellent high temperature resistance and can maintain good elasticity and stability in high temperature environments. During the operation of heavy trucks, especially when the braking system is frequently working, the temperature near the wheel hub will rise significantly. Due to the heat conduction generated by the brake, the temperature around the wheel hub bearing may reach a very high level. The silicone elastic sleeve will not easily soften or lose its elasticity in this high temperature environment and can still effectively play a buffering and protective role.

[0029] refer to Figure 3 The elastic sleeve 101 is made of EVA foam material 101d.

[0030] As a technical optimization of this utility model, the EVA foam material 101d assists the wheel hub bearing 102 in its use. The EVA foam material is lightweight, soft, and highly elastic. It contains a large number of microbubbles, which can be compressed when subjected to external impact, thereby effectively absorbing and dispersing energy.

[0031] refer to Figure 3 The material of the elastic sleeve 101 includes thermoplastic elastomer 101e.

[0032] As a technical optimization of this utility model, the thermoplastic elastomer 101e assists the wheel hub bearing 102 in its use. The thermoplastic elastomer has good resistance to many chemicals. In the operating environment of heavy trucks, they may come into contact with various chemical reagents, such as lubricating oil, brake fluid, and cleaning agents. The elastic sleeve can resist the corrosion of these chemicals and maintain the integrity of its performance and structure.

[0033] refer to Figure 3 The materials of the fixing ring 103 include aluminum alloy and steel.

[0034] As a technical optimization of this utility model, the setting of the fixing ring 103 can assist the use of the wheel hub bearing 102. During the operation of the heavy truck, the wheel hub bearing will generate heat due to friction and other factors. The aluminum alloy fixing ring can quickly conduct the heat away, avoiding the accumulation of heat in the bearing. This helps to maintain the wheel hub bearing within a suitable operating temperature range, preventing problems such as bearing grease failure and component expansion and deformation due to overheating, thereby extending the service life of the wheel hub bearing.

[0035] The working principle and usage process of this utility model are as follows: In use, the wheel hub bearing 102 is placed inside the elastic sleeve 101. The elastic sleeve 101 is made of various materials including polyurethane 101a, rubber 101b, silicone 101c, EVA foam material 101d, and thermoplastic elastomer 101e. These materials tightly wrap the wheel hub bearing, providing initial fixation and cushioning. The elastic sleeve 101 with the wheel hub bearing is then placed into the inner cavity of the wheel hub, ensuring the fixing ring 103 mates with the inner cavity of the wheel hub, thus guaranteeing the stable position of the elastic sleeve structure within the wheel hub cavity. When the vehicle travels over bumpy roads, the impact force is transmitted through the wheel hub to the elastic sleeve structure. The elastic sleeve 101 is the first to be impacted. Due to the properties of its elastic material, it undergoes elastic deformation to absorb and cushion these impact forces. Under the protection of the elastic sleeve 101, the rolling elements, raceways, and other components inside the wheel hub bearing 102 are less stressed. The deformation of the elastic sleeve 101 makes the force distribution of the wheel hub bearing 102 more uniform, reducing local overload. The elastic sleeve 101, made of various elastic materials, can effectively buffer various impact forces generated by uneven road surfaces during heavy truck operation. Compared with wheel hub bearings without elastic spacer structures, this design can greatly reduce the instantaneous impact load on the wheel hub bearing. When the vehicle passes through a large pothole, the elastic sleeve 101 can absorb most of the impact force, preventing excessive wear or damage to the rolling elements and raceways inside the wheel hub bearing due to instantaneous overload. The fixing ring 103 ensures the stable position of the elastic sleeve 101 and the wheel hub bearing 102 in the inner cavity of the wheel hub, making the wheel more stable during operation and reducing wheel swaying and deviation caused by wheel hub bearing displacement. This stability is particularly important when the heavy truck is traveling at high speed or fully loaded, which can improve the vehicle's handling and driving safety.

[0036] In summary, this elastic spacer structure and the heavy-duty truck wheel hub bearing using this structure solve the problem of impact forces generated when the wheel passes over uneven road surfaces during wheel hub bearing use. The elastic element can absorb these impact forces to a certain extent, reducing the direct impact force on the wheel hub bearing. However, the elastic material is of a single type and generally wears out quite severely. As the elastic element wears out significantly, its ability to absorb and buffer the impact forces generated during vehicle operation will decrease significantly, causing the wheel hub bearing to be subjected to greater impact loads, affecting the normal operation of the bearing, and aggravating the wear of internal bearing parts.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elastic spacer structure and a heavy-duty truck wheel hub bearing using the same structure, characterized in that: include The elastic mechanism (100) includes an elastic sleeve (101), the inner cavity of which is provided with a hub bearing (102), and the surface of the elastic sleeve (101) is provided with a fixing ring (103), which is disposed in the inner cavity of the hub.

2. The elastic spacer structure according to claim 1 and the heavy-duty truck wheel hub bearing using the structure, characterized in that: The elastic sleeve (101) is made of polyurethane (101a).

3. The elastic spacer structure according to claim 2 and the heavy-duty truck wheel hub bearing using the structure, characterized in that: The elastic sleeve (101) is made of rubber (101b).

4. The elastic spacer structure according to claim 3 and the heavy-duty truck wheel hub bearing using the structure, characterized in that: The elastic sleeve (101) is made of silicone (101c).

5. The elastic spacer structure according to claim 4 and the heavy-duty truck wheel hub bearing using the structure, characterized in that: The elastic sleeve (101) is made of EVA foam material (101d).

6. The elastic spacer structure according to claim 5 and the heavy-duty truck wheel hub bearing using the structure, characterized in that: The elastic sleeve (101) is made of thermoplastic elastomer (101e).

7. The elastic spacer structure according to claim 1 and the heavy-duty truck wheel hub bearing using the structure, characterized in that: The fixing ring (103) is made of aluminum alloy and steel.

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