A type of automotive wheel hub unit with a high-performance external dust-tight ring

Abstract

This utility model relates to the field of automotive wheel hub unit technology, and discloses an automotive wheel hub unit with a high-performance outer dust seal ring. It includes a dust cover fitted onto the outer surface of a flange, with the dust cover located at the other end of the outer ring. A sealing ring is embedded between the outer and inner rings. Bolt holes are provided on the outer surfaces of the flange and the outer ring, allowing the automotive wheel hub unit to be installed and fixed by bolts installed in these holes. The outer and inner rings are sealed together by the outer sealing ring and the inner sealing ring, both of which are double-layered structures. The outer and inner layers are installed using an embedded structure, increasing stability over time. The increased thickness of the outer and inner sealing rings improves the sealing effect and facilitates replacement when wear occurs.

Description

Technical Field

[0001] This utility model relates to the field of automotive wheel hub unit technology, specifically an automotive wheel hub unit with a high-performance outer dust-proof ring. Background Technology

[0002] The wheel hub unit is the core component connecting the wheel and the axle. Its main functions include bearing weight, guiding rotation, and bearing axial and radial loads.

[0003] For example, Chinese patent CN210050206U discloses an automotive wheel hub unit with a combined magnetic sealing ring, including a flange, a steel ball, an inner ring, and an outer ring. A sealing ring is provided in the gap between the inner ring and the outer ring. The sealing ring includes a first sealing ring attached to the outer ring and a second sealing ring attached to the inner ring. The second sealing ring is provided with a magnetic ring for providing ABS signals. The first sealing ring and the second sealing ring are positioned by elastic support. The outer end face of the magnetic ring is flush with the end face of the inner ring and / or the outer ring or inward of the end face of the inner ring and / or the outer ring by a certain distance. This structure allows for the installation of a magnetic ring between the inner and outer rings while simultaneously installing the sealing ring. Furthermore, the end faces of the inner and / or outer rings protect the magnetic ring, preventing it from colliding and failing during the wheel hub unit's manufacturing process. Traditional automotive wheel hub units require regular lubrication and maintenance, and the sealing efficiency of their sealing rings needs to be tested. However, the contact between the inner and outer ring housings on the sealing ring surface makes it highly susceptible to wear during use, leading to a reduction in sealing effectiveness. Therefore, an automotive wheel hub unit with a high-performance outer sealing ring is proposed to address these issues. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an automotive wheel hub unit with a high-performance external dust sealing ring, which offers advantages such as improved sealing performance and solves the problem of poor sealing performance in traditional systems.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goal of enhancing sealing performance, this utility model provides the following technical solution: a car wheel hub unit with a high-performance external dust-tight ring, comprising:

[0008] A flange, wherein an outer ring and an inner ring are fitted on the outer surface of the flange, and the inner ring is disposed between one end of the flange and the outer ring;

[0009] A dust cover is fitted onto the outer surface of the flange, and the dust cover is located at the other end of the outer ring. A sealing ring is embedded between the outer ring and the inner ring. The sealing ring has a double-layer structure, and the double-layer structure is connected by an embedded installation.

[0010] A cage is installed between the flange and the outer ring. An outer ring is integrally installed on the outer surface of the cage. An elastic ring is embedded in the outer surface of the outer ring to reduce the vibration generated by the high-speed rotation of the outer ring.

[0011] Preferably, bolt holes are provided on the outer surfaces of the flange and the outer ring, and the automotive wheel hub unit is installed and fixed by installing bolts in the bolt holes.

[0012] Preferably, the outer surface of the cage has several mounting grooves, and several steel balls are embedded in the mounting grooves. The outer ring can rotate along the inner ring through the steel balls, and the cage ensures the stability of the steel ball's running track.

[0013] Preferably, an outer sealing ring is embedded in the inner wall of the dust cover, and a protrusion is integrally installed on the inner wall of the dust cover. A groove matching the protrusion is opened on one side of the outer sealing ring. The dust covers and magnetic rings at both ends can perform dustproof treatment on the inside.

[0014] Preferably, an inner layer is embedded inside the outer sealing ring, and both the outer and inner sealing rings adopt a double-layer structure. Both the outer and inner layers are installed using an embedded structure, which increases the stability over time.

[0015] Preferably, a sealing ring is installed on the inner side of the magnetic ring, a retaining plate that matches one end of the sealing ring is fixedly installed inside the magnetic ring, and an outer layer is embedded on the outer surface of the sealing ring.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an automotive wheel hub unit with a high-performance outer dust-tight ring, which has the following beneficial effects:

[0018] The inner and outer rings are sealed by an outer sealing ring and a sealing ring, and both the outer and inner sealing rings are double-layered structures. Both the outer and inner layers are installed using an embedded structure, which increases the stability over time. The thickness of the outer and inner sealing rings is also increased, thereby improving the sealing effect. At the same time, an outer ring is provided on the outside of the cage. The elastic ring on the outside of the outer ring contacts the flange and the outer ring, reducing the transmission of vibration during high-speed rotation and keeping the steel balls stable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is the front view of the present utility model;

[0021] Figure 3 This is a schematic diagram of the dust cover structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the magnetic coil structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the cage of this utility model.

[0024] In the diagram: 1. Flange; 2. Outer ring; 3. Inner ring; 4. Cage; 41. Outer ring; 42. Elastic ring; 43. Mounting groove; 5. Steel ball; 6. Dust cover; 61. Protrusion; 7. Outer sealing ring; 71. Inner layer; 8. Magnetic ring; 81. Clamping plate; 9. Sealing ring; 91. Outer layer. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-5 The present invention provides the following technical solution: a car wheel hub unit with a high-performance outer dust-tight ring, including a flange 1, wherein an outer ring 2 and an inner ring 3 are sleeved on the outer surface of the flange 1, and the inner ring 3 is disposed between one end of the flange 1 and the outer ring 2.

[0027] In this embodiment, bolt holes are provided on the outer surfaces of the flange 1 and the outer ring 2, and the installation and fixing of the automobile wheel hub unit is completed by installing bolts in the bolt holes.

[0028] The outer surface of the retainer 4 is provided with a number of mounting grooves 43, and a number of steel balls 5 are embedded in the mounting grooves 43. The outer ring 2 can rotate along the inner ring 3 through the steel balls 5, and the retainer 4 ensures the stability of the running track of the steel balls 5.

[0029] In this embodiment, the dust cover 6 is sleeved on the outer surface of the flange 1, and the dust cover 6 is located at the other end of the outer ring 2. A sealing ring 9 is embedded between the outer ring 2 and the inner ring 3. The sealing ring 9 has a double-layer structure, and the double-layer structure is connected by embedded installation. An outer sealing ring 7 is embedded in the inner wall of the dust cover 6. A protrusion 61 is integrally installed on the inner wall of the dust cover 6. A groove matching the protrusion 61 is opened on one side of the outer sealing ring 7. The dust covers 6 at both ends and the magnetic ring 8 can perform dust prevention treatment inside.

[0030] The outer sealing ring 7 has an inner layer 71 embedded inside it. Both the sealing ring 9 and the outer sealing ring 7 adopt a double-layer structure. The outer layer 81 and the inner layer 71 are installed by embedding structure to increase the stability during use. The magnetic ring 8 has a sealing ring 9 installed inside it. The magnetic ring 8 has a clamping plate 81 that matches one end of the sealing ring 9. The outer layer 91 is embedded on the outer surface of the sealing ring 9.

[0031] In this embodiment, the retainer 4 is installed between the flange 1 and the outer ring 2. The outer surface of the retainer 4 is integrally mounted with an outer ring 41, and an elastic ring 42 is sleeved and embedded on the outer surface of the outer ring 41. The elastic ring 42 reduces the vibration generated by the high-speed rotation of the outer ring 2.

[0032] The working principle of this embodiment is as follows:

[0033] The outer ring 2 can rotate along the inner ring 3 via the steel ball 5. The dust cover 6 and magnetic ring 8 at both ends can protect the interior from dust. The inner protrusion 61 of the dust cover 6 is inserted into the sealing ring 9 for limiting, so that the sealing ring 9 is connected to the dust cover 6, which increases the sealing performance of the dust cover 6. Both the sealing ring 9 and the outer sealing ring 7 adopt a double-layer structure. The outer layer 81 and the inner layer 71 are both installed using an embedded structure, which increases the stability over time and increases the thickness of the outer sealing ring 7 and the sealing ring 9, thereby improving the sealing effect and facilitating replacement when wear occurs.

[0034] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] 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. A high performance outer dust seal for a vehicle wheel hub unit, characterized by, include: Flange (1), the outer surface of the flange (1) is fitted with an outer ring (2) and an inner ring (3), and the inner ring (3) is disposed between one end of the flange (1) and the outer ring (2); A dust cover (6) is fitted on the outer surface of the flange (1) and the dust cover (6) is located at the other end of the outer ring (2). A sealing ring (9) is embedded between the outer ring (2) and the inner ring (3). The sealing ring (9) is a double-layer structure and the double-layer structure is connected by embedded installation. A retainer (4) is installed between the flange (1) and the outer ring (2). An outer ring (41) is integrally installed on the outer surface of the retainer (4). An elastic ring (42) is embedded on the outer surface of the outer ring (41). The elastic ring (42) reduces the vibration generated by the high-speed rotation of the outer ring (2).

2. The automotive wheel hub unit with high performance outer dust seal according to claim 1, characterized in that: Bolt holes are provided on the outer surfaces of the flange (1) and the outer ring (2).

3. The automotive wheel hub unit with high performance outer dust seal according to claim 1, characterized in that: The outer surface of the retainer (4) is provided with a number of mounting slots (43), and a number of steel balls (5) are embedded inside the mounting slots (43).

4. The automotive hub unit with high performance outer dust seal according to claim 1, characterized in that: The inner wall of the dust cover (6) is embedded with an outer sealing ring (7), and the inner wall of the dust cover (6) is integrally installed with a protrusion (61). The outer surface of one side of the outer sealing ring (7) is provided with a groove that matches the protrusion (61).

5. The automotive wheel hub unit with high performance outer dust seal according to claim 4, characterized in that: The inner layer (71) is embedded on the inner side of the outer sealing ring (7).

6. The automotive hub unit with high performance outer dust seal according to claim 1, characterized in that: A sealing ring (9) is installed on the inner side of the magnetic ring (8). A card plate (81) matching one end of the sealing ring (9) is fixedly installed inside the magnetic ring (8). An outer layer (91) is embedded on the outer surface of the sealing ring (9).

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