Automobile hub unit with integrated sealing structure

Abstract

The utility model relates to the field of sealing structures, and discloses an integrated sealing structure automobile hub unit which comprises a ring body, the right end of the ring body is fixedly connected with an inner flange, the left end of the inner flange is sleeved with an outer flange, and the left end of the ring body is provided with a sealing assembly and a machining assembly. The sealing assembly comprises a muddy water preventing lip, a grease leakage preventing lip and a grease blocking lip, the muddy water preventing lip is arranged on the outer wall of the ring body, the grease leakage preventing lip is arranged at the position, close to the left end of the muddy water preventing lip, of the outer wall of the ring body, and the grease blocking lip is arranged at the position, close to the left end, of the outer wall of the ring body. And the muddy water prevention lip is in interference fit with the outer flange. According to the utility model, the sealing assembly is arranged, and a sealing cavity can be formed between the ring body and the outer flange through the matching of a plurality of groups of lips, so that the functions of dust prevention, muddy water prevention, grease prevention, no increase of torque and the like required by the bearing can be achieved, and the whole device is better in sealing performance during use.

Description

Technical Field

[0001] The utility model relates to the field of sealing structures, in particular to an automobile wheel hub unit with an integrated sealing structure. Background Art

[0002] The sealing ring is a common sealing structure that can be used to block various fluids. In the field of automobile manufacturing, a sealing structure is often needed. A set of sealing structures needs to be set between the automobile wheel hub and the outer flange to prevent mud and water from entering the interior of the wheel hub.

[0003] In the prior art, the existing sealing structure mainly achieves sealing by cooperating with the outer retaining ring and the inner flange. Since the outer retaining ring and the inner flange are two parts, they are press-fitted together by interference fit. If the outer retaining ring is pressed off, warped or other problems occur during the press-fitting process, a gap will be generated between the outer retaining ring and the inner flange, allowing muddy water to enter through the fitting point between the outer retaining ring and the inner flange. The sealing effect of the entire device is poor when in use. Therefore, an integrated sealing structure automobile hub unit is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides an integrated sealing structure automobile wheel hub unit, which aims to improve the problem in the prior art that "the existing sealing structure has gaps when in use and the overall sealing effect is poor".

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an integrated sealing structure automobile wheel hub unit, comprising a ring body, the right end of the ring body is fixedly connected to an inner flange, the left end of the inner flange is sleeved with an outer flange, and the left end of the ring body is provided with a closing component and a processing component, the closing component comprises a mud and water proof lip, a grease leakage proof lip, and a grease blocking lip, the mud and water proof lip is arranged on the outer wall of the ring body, the grease leakage proof lip is arranged on the outer wall of the ring body near the left end of the mud and water proof lip, and the grease blocking lip is arranged on the outer wall of the ring body near the left end of the mud and water proof lip, and the grease blocking lip is arranged on the outer wall of the ring body near the left end.

[0006] As a further description of the above technical solution:

[0007] The mud and water proof lip and the outer flange are in interference fit.

[0008] As a further description of the above technical solution:

[0009] The anti-leakage grease lip and the outer flange are in interference fit.

[0010] As a further description of the above technical solution:

[0011] There is a transition fit between the grease retaining lip and the outer flange.

[0012] As a further description of the above technical solution:

[0013] The processing assembly includes a first processing cavity, which is arranged at the gap between the mud and water proof lip and the ring body.

[0014] As a further description of the above technical solution:

[0015] A second processing cavity is provided at the gap between the grease leakage prevention lip and the mud and water prevention lip.

[0016] As a further description of the above technical solution:

[0017] A third processing cavity is provided at the gap between the grease blocking lip and the grease leakage preventing lip.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the present invention, by setting up a closing component and cooperating with multiple sets of lips, a sealed cavity can be formed between the ring body and the outer flange, so that the functions required by the bearing such as dustproof, mud and water proof, grease proof, and no increase in torque can be achieved, and the overall device has good sealing performance when in use.

[0020] 2. In the present invention, by simplifying the mechanism, the overall device removes the sealing ring frame and the outer retaining ring compared to the prior art, which can make the overall structure simpler, make the overall device easier to manufacture, and reduce the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the ring body in the utility model;

[0022] Figure 2 This is a cross-sectional diagram of the assembly state of the ring body of the utility model;

[0023] Figure 3 It is a cross-sectional schematic diagram of the ring body in the present invention.

[0024] Legend:

[0025] 1. Ring body; 12. Lip to prevent mud and water; 13. Lip to prevent grease leakage; 14. Lip to block grease; 15. First processing cavity; 16. Second processing cavity; 17. Third processing cavity; 2. Outer flange; 3. Inner flange. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figure 1 - Figure 3 The utility model provides an embodiment: an integrated sealing structure automobile wheel hub unit, including a ring body 1 for achieving sealing between an inner flange 3 and an outer flange 2, the right end of the ring body 1 is fixedly connected to the inner flange 3, the ring body 1 and the inner flange 3 are connected to each other through a vulcanization process, so as to prevent a gap from appearing between the ring body 1 and the inner flange 3, the left end of the inner flange 3 is sleeved with the outer flange 2, and a sealing component and a processing component for blocking mud and water are provided at the left end of the ring body 1, the sealing component includes a mud and water proof lip 12 for blocking mud and water, a grease proof lip 13 for preventing grease inside the bearing from leaking, and a grease blocking lip 14 for blocking grease from overflowing to the outside of the bearing, the mud and water proof lip 12 is provided on the outer wall of the ring body 1, the grease proof lip 13 is provided on the outer wall of the ring body 1 near the left end of the mud and water proof lip 12, and the grease blocking lip 14 is provided on the outer wall of the ring body 1 near the left end.

[0028] Reference Figure 1 - Figure 3 The mud and water prevention lip 12 and the outer flange 2 are interference fit. Through the interference fit between the mud and water prevention lip 12 and the outer flange 2, a bearing external sealing wall cavity can be formed between the ring body 1 and the outer flange 2, so that the mud blocking effect can be achieved. The grease leakage prevention lip 13 and the outer flange 2 are interference fit. Through the interference fit between the grease leakage prevention lip 13 and the outer flange 2, a bearing internal sealing cavity can be formed between the ring body 1 and the outer flange 2, so that grease inside the bearing can be prevented from leaking. The grease blocking lip 14 and the outer flange 2 are transition fit. Through the transition fit between the grease blocking lip 14 and the outer flange 2, grease can be prevented from overflowing to the outside of the bearing.

[0029] Reference Figure 1 - Figure 3The processing component includes a first processing cavity 15 for facilitating the forming of the mud and water proof lip 12. The first processing cavity 15 is arranged at the gap between the mud and water proof lip 12 and the ring body 1. A second processing cavity 16 for facilitating the forming of the anti-leakage grease lip 13 is arranged at the gap between the anti-leakage grease lip 13 and the anti-leakage grease lip 12. A third processing cavity 17 for sealing the edge of the grease proof lip 14 is arranged at the gap between the grease proof lip 14 and the grease proof lip 13. When producing this device, since multiple groups of processing cavities are on the same side, the ring body 1 can be fixed to the outer wall of the outer flange 2 first and then the multiple groups of lips can be processed, which is more convenient during processing.

[0030] Working principle: Through the mutual cooperation between the mud and water prevention lip 12, the grease leakage prevention lip 13, the grease blocking lip 14 and the outer flange 2, multiple groups of sealing cavities can be formed, which can achieve the effects of mud blocking, leakage prevention and overflow prevention. At the same time, by using the vulcanization process to connect the ring body 1 and the outer flange 2, the gap between the ring body 1 and the outer flange 2 can be further eliminated, so that water can be prevented from entering the connection between the ring body 1 and the outer flange 2, and the overall device has good sealing performance.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated sealing structure automobile wheel hub unit, comprising a ring body (1), characterized in that: The right end of the ring body (1) is fixedly connected to an inner flange (3), and the left end of the inner flange (3) is sleeved with an outer flange (2). The left end of the ring body (1) is provided with a closing component and a processing component, and the closing component comprises a mud and water lip (12), a grease leakage lip (13), and a grease blocking lip (14). The mud and water lip (12) is provided on the outer wall of the ring body (1), the grease leakage lip (13) is provided on the outer wall of the ring body (1) near the left end of the mud and water lip (12), and the grease blocking lip (14) is provided on the outer wall of the ring body (1) near the left end.

2. The integrated sealing structure automobile hub unit according to claim 1, characterized in that: The mud and water proof lip (12) and the outer flange (2) are in interference fit.

3. The integrated sealing structure automobile wheel hub unit according to claim 1, characterized in that: The anti-leakage grease lip (13) and the outer flange (2) are in interference fit.

4. The integrated sealing structure automobile wheel hub unit according to claim 1, characterized in that: There is a transition fit between the grease retaining lip (14) and the outer flange (2).

5. The integrated sealing structure automobile hub unit according to claim 1, characterized in that: The processing assembly comprises a first processing cavity (15), and the first processing cavity (15) is arranged at the gap between the mud and water prevention lip (12) and the ring body (1).

6. The integrated sealing structure automobile wheel hub unit according to claim 5, characterized in that: A second processing cavity (16) is provided at the gap between the grease leakage prevention lip (13) and the mud and water prevention lip (12).

7. The integrated sealing structure automobile wheel hub unit according to claim 6, characterized in that: A third processing cavity (17) is provided at the gap between the grease blocking lip (14) and the grease leakage preventing lip (13).

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