Automobile hub unit with small starting torque

Abstract

The utility model relates to the technical field of automobile hub units, and discloses an automobile hub unit with small starting torque, which comprises a flange plate body, an outer ring, an inner ring, a roller and a retainer, the outer ring is sleeved on the outer side of the flange plate body, the inner ring is arranged between the outer ring and the flange plate body, the retainer is arranged between the outer ring and the inner ring, and the roller is sleeved on the retainer. A plurality of rollers are arranged in the retainer and make contact with the inner ring, a sealing assembly and a lower sealing piece are arranged between the outer ring and the inner ring, the sealing assembly comprises an inner framework and an outer framework, and the outer framework elastically abuts against the inner wall of the outer ring in a pressing mode. According to the automobile hub unit with the small starting torque, through the specific design of the sealing part, the situation of compact layout of the sealing part is reduced, the contact face of the sealing part is smooth, good elasticity and small friction force are achieved in the rotating process, and the torque of the automobile hub unit in the rotating process can be well reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wheel hub units, in particular to an automobile wheel hub unit with a small starting torque. Background Art

[0002] The automobile wheel hub unit is an important part that connects the tire (rotating part) / brake disc (rotating part) and the steering knuckle. Its main function is to reduce the friction of the rotating pair and transmit torque, while bearing the radial load and axial load of the vehicle.

[0003] There are various types of automobile wheel hub units. A new type of automobile wheel hub unit disclosed in Chinese patent CN219214606U can be referred to, which includes structures such as fastening bolts. Customers of the wheel hub unit can replace the tire fastening bolts by themselves to enhance convenience. However, the existing automobile wheel hub unit still has the disadvantage of a large starting torque. Because the sealing part of the traditional automobile wheel hub unit is arranged relatively compactly and the contact method of the sealing component is not smooth enough, it is easy to increase the torque of the starting rotation during the subsequent rotation process, which greatly increases the energy loss. Therefore, an automobile wheel hub unit with a small starting torque is proposed to solve the above problem. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an automobile wheel hub unit with a small starting torque, which has the advantages of a small starting torque, etc., and solves the problem that the traditional automobile wheel hub unit has a large starting torque.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of small starting torque, the utility model provides the following technical solutions: a small starting torque automobile hub unit, comprising a flange body, an outer ring, an inner ring, a roller and a retaining frame, the outer ring is sleeved on the outside of the flange body, an inner ring is arranged between the outer ring and the flange body, a retaining frame is arranged between the outer ring and the inner ring, a plurality of rollers are arranged in the retaining frame, the rollers are in contact with the inner ring, and a sealing assembly and a lower sealing member are respectively arranged between the outer ring and the inner ring.

[0008] Preferably, the sealing assembly includes an inner frame and an outer frame, the outer frame is elastically pressed against the inner wall of the outer ring, the inner frame is elastically pressed against the inner wall of the inner ring, the first sealing lip is elastically sleeved on the end face of the outer frame, and the second sealing lip and the third sealing lip are integrally formed on one side of the first sealing lip, and the first sealing lip, the second sealing lip and the third sealing lip are all pressed against the end face of the outer ring.

[0009] Preferably, the second sealing lip and the third sealing lip are both arranged obliquely, and a "U"-shaped groove is formed at the connection between the second sealing lip and the third sealing lip.

[0010] Preferably, the first sealing lip is placed obliquely, and the setting direction of the first sealing lip is opposite to the setting direction of the second sealing lip and the third sealing lip.

[0011] Preferably, the pressing surfaces of the first sealing lip, the second sealing lip and the third sealing lip are all at right angles.

[0012] Preferably, bolts are provided on the outer side of the flange body, a gear ring is sleeved on the inner side of the flange body, and nuts are provided on the inner side of the flange body.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides an automobile wheel hub unit with a small starting torque, which has the following beneficial effects:

[0015] The automobile wheel hub unit with small starting torque reduces the compact layout of the seal through the unique design of the sealing component, and the contact surface of the sealing component is relatively smooth, has good elasticity and small friction during rotation, and can effectively reduce the torque of the automobile wheel hub unit when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure of the sealing component of the utility model.

[0018] In the figure: 1. outer ring; 2. inner ring; 3. roller; 4. retaining frame; 5. sealing assembly; 51. inner frame; 52. outer frame; 53. first sealing lip; 54. second sealing lip; 55. third sealing lip; 6. lower seal; 7. flange body; 8. bolt; 9. gear ring; 10. nut. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-2A small starting torque automobile hub unit comprises a flange body 7, an outer ring 1, an inner ring 2, rollers 3 and a retaining frame 4, a bolt 8 is arranged on the outer side of the flange body 7, a gear ring 9 is sleeved on the inner side of the flange body 7, a nut 10 is arranged on the inner side of the flange body 7, the outer ring 1 is sleeved on the outer side of the flange body 7, an inner ring 2 is arranged between the outer ring 1 and the flange body 7, a retaining frame 4 is arranged between the outer ring 1 and the inner ring 2, a plurality of rollers 3 are arranged in the retaining frame 4, the rollers 3 are in contact with the inner ring 2, and a sealing assembly 5 and a lower sealing member 6 are respectively arranged between the outer ring 1 and the inner ring 2.

[0021] Among them, the sealing assembly 5 includes an inner frame 51 and an outer frame 52, the outer frame 52 is elastically pressed against the inner wall of the outer ring 1, the inner frame 51 is elastically pressed against the inner wall of the inner ring 2, the first sealing lip 53 is elastically sleeved on the end face of the outer frame 52, and the second sealing lip 54 and the third sealing lip 55 are integrally formed on one side of the first sealing lip 53. The first sealing lip 53, the second sealing lip 54 and the third sealing lip 55 are all pressed against the end face of the outer ring 1, the second sealing lip 54 and the third sealing lip 55 are both inclined, and a "U"-shaped groove is formed at the connection between the second sealing lip 54 and the third sealing lip 55. The first sealing lip 53 is placed at an angle, and the setting direction of the first sealing lip 53 is opposite to the setting direction of the second sealing lip 54 and the third sealing lip 55.

[0022] In addition, the pressing surfaces of the first sealing lip 53, the second sealing lip 54 and the third sealing lip 55 are all right angles. Due to the unique right-angle design, the friction force can be reduced, and the pressing is smooth, and the phenomenon of over-tightening of the seal is not likely to occur.

[0023] The working principle of this embodiment is as follows:

[0024] During the use of the automobile hub unit, due to the design of the internal sealing components, the pressing surfaces of the sealing lips are set at right angles and pressed obliquely, which can make the pressing method of the seal have a certain smoothness during rotation, can reduce resistance, and thus reduce the torque, and the number of each sealing lip is reduced. The second sealing lip 54 and the third sealing lip 55 are set in the area where the seal needs to be reinforced, and the area close to the outside is set with only one first sealing lip 53. Therefore, the unique design can make the sealing components arranged less compactly, and the pressing surface is also reduced, further reducing the torque after the car is started.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small starting torque automobile hub unit, comprising a flange body (7), an outer ring (1), an inner ring (2), a roller (3) and a cage (4), characterized in that: The outer ring (1) is sleeved on the outer side of the flange body (7); an inner ring (2) is provided between the outer ring (1) and the flange body (7); a retaining frame (4) is provided between the outer ring (1) and the inner ring (2); a plurality of rollers (3) are provided in the retaining frame (4); the rollers (3) are in contact with the inner ring (2); and a sealing assembly (5) and a lower sealing member (6) are provided between the outer ring (1) and the inner ring (2); The sealing assembly (5) comprises an inner frame (51) and an outer frame (52), the outer frame (52) elastically presses against the inner wall of the outer ring (1), the inner frame (51) elastically presses against the inner wall of the inner ring (2), a first sealing lip (53) elastically sleeved on the end surface of the outer frame (52), a second sealing lip (54) and a third sealing lip (55) integrally formed on one side of the first sealing lip (53), and the first sealing lip (53), the second sealing lip (54) and the third sealing lip (55) all press against the end surface of the outer ring (1); The pressing surfaces of the first sealing lip (53), the second sealing lip (54) and the third sealing lip (55) are all at right angles.

2. The automobile wheel hub unit with small starting torque according to claim 1, characterized in that: The second sealing lip (54) and the third sealing lip (55) are both arranged at an inclination, and a "U"-shaped groove is formed at the connection between the second sealing lip (54) and the third sealing lip (55).

3. The automobile wheel hub unit with small starting torque according to claim 2, characterized in that: The first sealing lip (53) is placed at an angle, and the setting direction of the first sealing lip (53) is opposite to the setting direction of the second sealing lip (54) and the third sealing lip (55).

4. The automobile wheel hub unit with small starting torque according to claim 1, characterized in that: Bolts (8) are provided on the outer side of the flange body (7), a gear ring (9) is sleeved on the inner side of the flange body (7), and a nut (10) is provided on the inner side of the flange body (7).

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