Automobile hub bearing with good heat conduction effect
By introducing heat-conducting components and heat dissipation rings into automotive wheel hub bearings, the problems of low heat dissipation efficiency and heat accumulation in existing technologies are solved, achieving efficient heat dissipation and conduction, and ensuring the normal operation of the bearings under various working conditions.
Patent Information
- Application Number
- CN202520627915.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Existing automotive wheel bearings have defects in heat conduction. Their heat dissipation structure is simple and relies on natural convection for heat dissipation, which is inefficient. In particular, heat is difficult to dissipate in time when there is urban congestion or when climbing hills in mountainous areas. In addition, the contact area between the bearing and the axle is limited, resulting in high contact thermal resistance and making it difficult to transfer heat effectively.
An automotive wheel hub bearing including a heat-conducting component and a heat dissipation ring was designed. The heat-conducting component accelerates heat transfer through heat-conducting pillars and heat dissipation plates, while the heat dissipation ring increases the heat dissipation area through annular grooves and combines natural and forced convection heat dissipation. The inner ring and the axle are optimized for heat conduction through heat-conducting pads and heat-conducting coatings.
It improves the heat dissipation efficiency of wheel hub bearings, enabling them to dissipate heat in a timely manner when vehicles frequently start and stop or climb hills for extended periods, thereby reducing bearing temperature, minimizing internal heat buildup, maintaining normal operating temperature, and accelerating heat dissipation by increasing the contact area and optimizing the conduction path.
Smart Images
Figure CN223953085U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile wheel hub bearing, especially relates to a good automobile wheel hub bearing of heat conduction effect. BACKGROUND
[0002] As one of the key components of the automobile, the performance of the automobile wheel hub bearing directly affects the driving safety and reliability of the automobile. During the driving of the automobile, the wheel hub bearing bears the weight of the automobile body, the impact of the road surface and various dynamic loads during the driving of the vehicle, which will cause a large amount of heat to be generated inside the bearing.
[0003] The existing automobile wheel hub bearing has many defects in heat conduction. In the design of the heat dissipation structure, the existing wheel hub bearing is relatively simple, and most of them only rely on natural convection for heat dissipation, lack effective heat dissipation channels and heat dissipation auxiliary structures. When the vehicle frequently starts and stops in the urban congested road conditions or climbs for a long time in the mountainous road, the heat generated by the bearing cannot be dissipated in time, further aggravating the problem of temperature rise. Moreover, due to the limited contact area and large contact thermal resistance, the heat is difficult to be efficiently transferred from the bearing to the axle for dispersion, causing the heat to accumulate inside the bearing.
[0004] Therefore, a kind of automobile wheel hub bearing with good heat conduction effect is proposed. CONTENT OF UTILITY MODEL
[0005] The utility model aims at providing a kind of automobile wheel hub bearing with good heat conduction effect, which can solve the problem that the existing automobile wheel hub bearing has many defects in heat conduction. In the design of the heat dissipation structure, the existing wheel hub bearing is relatively simple, and most of them only rely on natural convection for heat dissipation, lack effective heat dissipation channels and heat dissipation auxiliary structures. When the vehicle frequently starts and stops in the urban congested road conditions or climbs for a long time in the mountainous road, the heat generated by the bearing cannot be dissipated in time, further aggravating the problem of temperature rise. Moreover, due to the limited contact area and large contact thermal resistance, the heat is difficult to be efficiently transferred from the bearing to the axle for dispersion, causing the heat to accumulate inside the bearing.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: a kind of automobile wheel hub bearing with good heat conduction effect, including wheel hub bearing main body, the bottom of the wheel hub bearing main body is provided with flange plate, the top of the wheel hub bearing main body is bolted with heat conduction component, the surface of the wheel hub bearing main body is sleeved with a plurality of heat dissipation rings, and a plurality of heat dissipation notches are formed in the surface of the heat dissipation ring in the form of ring;
[0007] The heat conducting assembly comprises a heat dissipation disc, the bottom of the heat dissipation disc is annularly provided with two groups of heat conducting columns, the bottom of the heat conducting column extends to the inside of the hub bearing body, the top of the inside of the heat dissipation disc is provided with a fixed plate, two bolts are penetrated through the inside of the fixed plate, and the bolts are threadedly connected with the inner wall of the hub bearing body.
[0008] Preferably, the hub bearing body comprises an outer ring, the inside of the outer ring is rotatably provided with an inner ring, the bottom of the inner ring is welded with the flange plate, and the inner wall of the inner ring is provided with a heat conducting pad.
[0009] Preferably, the opposite sides of the outer ring and the inner ring are provided with a retainer, the inside of the retainer is annularly provided with a plurality of rolling bodies, and the surfaces of the rolling bodies are rotatably contacted with the inner ring and the outer ring respectively.
[0010] Preferably, the top and the bottom of the opposite sides of the inner ring and the outer ring are both provided with track grooves, and the rolling bodies are located in the inside of the track grooves.
[0011] Preferably, the top and the bottom of the opposite sides of the inner ring and the outer ring are both provided with a stop ring in interference fit, the opposite sides of the two stop rings are both tightly contacted with two elastic clamping rings, and the sides of the elastic clamping rings close to the inner ring and the outer ring are respectively contacted with the inner ring and the outer ring.
[0012] Preferably, the top of the surface of the outer ring is sleeved with a connecting piece, and the inner wall of the inner ring is provided with a heat conducting coating.
[0013] Preferably, the bottom of the heat dissipation disc is provided with a heat conducting block, and the side of the heat conducting block close to the stop ring is contacted with the stop ring.
[0014] Preferably, the bolt is located in the inside of the outer ring, the two groups of heat conducting columns are respectively located in the inside of the outer ring and the inner ring, and the inside heat conducting column is rotatably contacted with the inner ring.
[0015] Compared with the prior art, the utility model has the advantages that:
[0016] 1、The heat conducting assembly can directly conduct the heat generated in the hub bearing body to the outside, compared with only relying on natural convection, greatly shortens the heat transfer path, and accelerates the heat dissipation speed, such as under the working conditions of frequent starting and stopping of vehicles or long time climbing, the heat accumulated in the hub bearing body can be discharged in time, and the temperature of the hub bearing body is effectively reduced.
[0017] 2、The application can effectively reduce the contact thermal resistance between the bearing and the axle, increase the contact area, make the heat more efficiently transmitted from the bearing to the axle for dispersion, reduce the accumulation of heat in the bearing, help maintain the normal working temperature of the bearing, and increase the heat dissipation area by the heat dissipation ring and the heat dissipation grooves formed on the surface, utilize the airflow during vehicle driving, combine the natural convection and forced convection, further improve the heat dissipation efficiency, and reduce the bearing temperature during vehicle driving. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The overall structure diagram of the automobile hub bearing with good heat conduction effect of the utility model;
[0019] Figure 2 The connection schematic diagram of the hub bearing body and the heat conduction assembly of the utility model;
[0020] Figure 3 The structure schematic diagram of the heat conduction assembly of the utility model;
[0021] Figure 4 The structure schematic diagram of the hub bearing body of the utility model;
[0022] Figure 5 The utility model Figure 3 The enlarged schematic diagram of A in the utility model;
[0023] Figure 6 The structure schematic diagram of the elastic clasp ring of the utility model.
[0024] In the figure, 1, hub bearing body; 11, outer ring; 12, inner ring; 13, heat conduction pad; 14, retainer; 15, rolling element; 2, flange plate; 3, heat conduction assembly; 31, heat dissipation disc; 32, heat conduction column; 33, fixed plate; 34, bolt; 4, heat dissipation ring; 5, check ring; 6, elastic clasp ring; 7, connecting piece; 8, heat conduction block. DETAILED DESCRIPTION
[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0026] Please refer to Figures 1-6 The utility model provides technical scheme:
[0027] The application discloses an automobile wheel hub bearing with good heat conduction effect.
[0028] The heat conduction assembly 3 comprises a heat dissipation disc 31 arranged at the top of the wheel hub bearing body 1, two groups of heat conduction columns 32 arranged in a ring shape at the bottom of the heat dissipation disc 31, the heat conduction columns 32 extending to the inside of the wheel hub bearing body 1, a fixed plate 33 arranged at the top of the inside of the heat dissipation disc 31, two bolts 34 penetrating through the inside of the fixed plate 33, and the bolts 34 being in threaded connection with the inner wall of the wheel hub bearing body 1.
[0029] In the embodiment, the heat conduction assembly 3 is arranged, the two groups of heat conduction columns 32 arranged in a ring shape at the bottom of the heat dissipation disc 31 extend to the inside of the wheel hub bearing body 1, so that the heat generated in the bearing can be quickly conducted to the heat dissipation disc 31, the heat conduction columns 32 are directly in contact with the inside of the bearing, the heat transfer path is greatly shortened compared with only relying on natural convection, the heat dissipation speed is accelerated, for example, in the working conditions of frequent starting and stopping of the vehicle or long-time climbing, the heat accumulated in the bearing can be quickly conducted out, the bearing temperature is effectively reduced, the heat dissipation disc 31 has a large surface area, the contact area with air is increased, the heat can be dissipated to the surrounding environment through convection, the heat conducted from the inside can be quickly dispersed on the surface of the heat dissipation disc 31, and the heat dissipation efficiency is improved.
[0030] Specifically, as shown in Figure 4 The wheel hub bearing body 1 comprises an outer ring 11, the inner ring 12 is rotationally arranged in the inside of the outer ring 11, the bottom of the inner ring 12 is welded with the flange plate 2, and the inner wall of the inner ring 12 is provided with a heat conduction pad 13.
[0031] Specifically, as shown in Figure 4 The opposite side between the outer ring 11 and the inner ring 12 is provided with a retainer 14, a plurality of rolling bodies 15 are arranged in a ring shape in the inside of the retainer 14, and the surfaces of the rolling bodies 15 are respectively in rotational contact with the inner ring 12 and the outer ring 11.
[0032] Specifically, as shown in Figure 4 The top and the bottom of the opposite side of the inner ring 12 and the outer ring 11 are provided with track grooves, and the rolling bodies 15 are located in the inside of the track grooves.
[0033] In the embodiment, the inner ring 12 rotates relative to the outer ring 11 under the action of the retainer 14 and the rolling elements 15 during the driving of the vehicle, heat is transferred from the inside of the bearing to the inner ring 12, and is conducted to the axle through the heat-conducting pad 13, thereby achieving heat dispersion, reducing the accumulation of heat in the bearing, and helping to maintain the normal working temperature of the bearing.
[0034] Specifically, as shown in Figure 5 , Figure 6 , the top and bottom between the inner ring 12 and the outer ring 11 on one side are provided with the check ring 5, and the opposite side of the two check rings 5 is in close contact with the two elastic clamping rings 6, and the side of the elastic clamping ring 6 close to the inner ring 12 and the outer ring 11 is in contact with them respectively.
[0035] Specifically, as shown in Figure 1 , the top of the surface of the outer ring 11 is sleeved with the connecting piece 7, and the inner wall of the inner ring 12 is provided with a heat-conducting coating.
[0036] In the embodiment, the check ring 5 and the elastic clamping ring 6 play a good sealing and protection role, prevent impurities from entering the inside of the bearing, affect the normal work and heat conduction performance of the bearing, and also help to maintain the performance of the lubricating oil in the bearing, prolong the service life of the bearing, and the connecting piece 7 is convenient for the hub bearing body 1 to be connected with other parts, and the heat-conducting coating can further optimize the heat conduction between the inner ring 12 and the axle, and improve the efficiency of heat transfer from the bearing to the axle.
[0037] Specifically, as shown in Figure 5 , the bottom of the heat dissipation disc 31 is provided with a heat-conducting block 8, and the side of the heat-conducting block 8 close to the check ring 5 is in contact with it.
[0038] Specifically, as shown in Figure 2 , the bolt 34 is inside the outer ring 11, and the two groups of heat-conducting columns 32 are respectively inside the outer ring 11 and the inner ring 12, and the inner heat-conducting column 32 is in rotating contact with the inner ring 12.
[0039] In the embodiment, the heat-conducting block 8 further enhances the heat conduction between the heat-conducting assembly 3 and the check ring 5, so that heat can be more comprehensively transferred from the inside of the bearing to the outside, improving the overall heat conduction effect, and the bolt 34 fixes the heat-conducting assembly 3 on the hub bearing body 1, ensuring the stability of the structure, the heat-conducting columns 32 are respectively inside the outer ring 11 and the inner ring 12, and the inner heat-conducting column 32 is in rotating contact with the inner ring 12, which conducts the heat generated by the inner ring 12 to the heat dissipation disc 31 during rotation, achieving efficient heat dissipation.
[0040] Working principle: when the vehicle is running, the hub bearing body 1 starts to work, the inner ring 12 rotates relative to the outer ring 11 under the action of the retainer 14 and the rolling body 15, the power of the vehicle is transmitted to the inner ring 12 through the axle, and then transmitted to the outer ring 11 through the rolling body 15, thereby driving the wheel to rotate, in the process, due to the friction between the rolling body 15 and the inner ring 12 and the outer ring 11, and various dynamic loads when the vehicle is running, a large amount of heat will be generated in the bearing, the heat generated by the rolling body 15 during operation is first transmitted to the inner ring 12 in rotating contact with it, when the heat is transmitted to the inner ring 12, the heat pad 13 plays a role, quickly conducts the heat to the axle, the axle as a larger heat sink can absorb and disperse the heat from the inner ring 12, reduce the accumulation of heat in the bearing, help to maintain the normal working temperature of the bearing, at the same time, the heat-conducting coating arranged on the inner wall of the inner ring 12 further optimizes the heat conduction between the inner ring 12 and the axle, improves the efficiency of heat transfer from the bearing to the axle, and the two groups of heat-conducting columns 32 arranged in a ring shape at the bottom of the heat sink plate 31, one group is located inside the outer ring 11, and the other group is located inside the inner ring 12 and in rotating contact with the inner ring 12, when the inner ring 12 and the outer ring 11 generate heat, the internal heat-conducting column 32 can directly conduct the heat to the heat sink plate 31, since the heat-conducting column 32 is in direct contact with the inside of the bearing, the heat transfer path is greatly shortened, the heat dissipation speed is accelerated, and since the heat sink plate 31 itself has a large surface area, the contact area with air is increased, which is conducive to the heat dissipation to the surrounding environment through convection, when the heat is transmitted to the outer ring 11, the heat on the surface of the outer ring 11 will be conducted to the heat sink ring 4, the heat sink groove increases the contact area of the heat sink ring 4 with air, and the heat on the outer ring 11 is dissipated through air convection.
[0041] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A car wheel hub bearing with good heat conduction effect, comprising a wheel hub bearing body (1), characterized in that: The bottom of the hub bearing body (1) is provided with a flange plate (2), the top of the hub bearing body (1) is bolted with a heat conduction assembly (3), the surface of the hub bearing body (1) is sleeved with a plurality of heat dissipation rings (4), and the surface of the heat dissipation ring (4) is annularly provided with a plurality of heat dissipation notches. The heat conduction assembly (3) comprises a heat dissipation plate (31), the heat dissipation plate (31) is arranged at the top of the hub bearing body (1), the bottom of the heat dissipation plate (31) is annularly provided with two groups of heat conduction columns (32), the bottom of the heat conduction column (32) extends to the inside of the hub bearing body (1), the top of the inside of the heat dissipation plate (31) is provided with a fixed plate (33), two bolts (34) penetrate the inside of the fixed plate (33), and the bolts (34) are in threaded connection with the inner wall of the hub bearing body (1).
2. The automobile wheel hub bearing with good heat conduction effect according to claim 1, characterized in that: The hub bearing body (1) comprises an outer ring (11), the inner ring (12) is rotatably arranged in the inner ring (11), and the bottom of the inner ring (12) is welded with the flange plate (2).
3. The automobile wheel hub bearing with good heat conduction effect according to claim 2, characterized in that: The opposite sides of the outer ring (11) and the inner ring (12) are provided with a retainer (14), the inside of the retainer (14) is annularly provided with a plurality of rolling bodies (15), and the surfaces of the rolling bodies (15) are respectively in rolling contact with the inner ring (12) and the outer ring (11).
4. The automobile wheel hub bearing with good heat conduction effect according to claim 3, characterized in that: The top and bottom of the opposite sides of the inner ring (12) and the outer ring (11) are provided with track grooves, and the rolling bodies (15) are located in the track grooves.
5. The automobile wheel hub bearing with good heat conduction effect according to claim 2, characterized in that: The top and bottom of the opposite sides of the inner ring (12) and the outer ring (11) are provided with a plurality of stop rings (5) in interference fit, the opposite sides of the two stop rings (5) are in close contact with two elastic clamping rings (6), and the sides of the elastic clamping rings (6) close to the inner ring (12) and the outer ring (11) are respectively in contact with them.
6. The automobile wheel hub bearing with good heat conduction effect according to claim 2, characterized in that: The top of the surface of the outer ring (11) is sleeved with a connecting piece (7), and the inner wall of the inner ring (12) is provided with a heat conduction coating.
7. The automobile wheel hub bearing with good heat conduction effect according to claim 5, characterized in that: The bottom of the heat dissipation plate (31) is provided with a heat conduction block (8), and the side of the heat conduction block (8) close to the stop ring (5) is in contact with it.
8. The automobile wheel hub bearing with good heat conduction effect according to claim 2, characterized in that: The bolts (34) are located in the inner ring (11), the two groups of heat conduction columns (32) are respectively located in the inner ring (11) and the inner ring (12), and the inner heat conduction column (32) is in rolling contact with the inner ring (12).