Hub bearing unit with multi-lip matching type sealing ring

Abstract

The utility model discloses a hub bearing unit with a multi-lip matching type sealing ring. The sealing structure mainly solves the problems that an existing sealing structure of a hub bearing unit is poor in effect, and leakage is prone to occurring. The sealing ring is characterized in that the sealing ring comprises a framework and a surrounding plate, and the surrounding plate is in contact with the inner wall of the outer ring; the outer plate is arranged on one side of the surrounding plate and is in contact with the axial outer wall of the outer ring; the inner plate is arranged on the other side of the surrounding plate and is opposite to the inner wall of the outer ring; the sealing body is connected with the framework, provided with a first sealing lip and used for being in sealing fit with the outer wall of the flange; the second sealing lip and the third sealing lip are in sealing fit with the circumferential outer wall of the inner ring; and the fourth sealing lip is in sealing fit with the inner wall of the outer ring. According to the hub bearing unit with the multi-lip matching type sealing ring, sealing can be better achieved (after a muddy water splashing experiment for 144 hours, muddy water and sand do not need to enter the hub bearing, and grease does not leak out).

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a wheel hub bearing unit with a multi-lip matching sealing ring. Background Art

[0002] The traditional sealing ring is composed of a matching frame and three rubber lips (shown in Figure 1). Figure 4 As shown in the figure), one section cooperates with the frame and the inner diameter of the outer flange seal, and the three rubber lips respectively fit with the step surface, arc and outer diameter of the inner flange seal. This structure has a poor sealing effect, and external mud and water are easy to penetrate and the internal grease of the product may leak out. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a wheel hub bearing unit with a multi-lip matching sealing ring, which mainly solves the problem that the sealing structure of the current wheel hub bearing unit is not effective and is prone to leakage.

[0004] The technical solution of the utility model is:

[0005] A wheel hub bearing unit with a multi-lip mating sealing ring comprises an inner ring and an outer ring, wherein a flange is arranged on the inner ring, and a sealing ring is arranged between the inner ring and the outer ring, wherein the sealing ring comprises

[0006] The frame comprises a surrounding plate, wherein the surrounding plate contacts the inner wall of the outer ring; an outer plate is arranged on one side of the surrounding plate and contacts the axial outer wall of the outer ring; and an inner plate is arranged on the other side of the surrounding plate and is arranged opposite to the inner wall of the outer ring;

[0007] The sealing body is connected to the frame and has

[0008] A first sealing lip, used for sealing with the outer wall of the flange;

[0009] The second sealing lip and the third sealing lip are in sealing cooperation with the circumferential outer wall of the inner ring;

[0010] The fourth sealing lip is in sealing cooperation with the inner wall of the outer ring.

[0011] It also includes an elastic member, which is used to apply force on the sealing body and make the second sealing lip, the third sealing spring and the inner ring seal and cooperate.

[0012] The elastic member is an elastic ring.

[0013] The outer plate is arranged perpendicularly to the enclosure plate, and the inner plate is arranged perpendicularly to the enclosure plate.

[0014] The outer wall of the inner ring is provided with a half ring, and the half ring is sleeved with a gear ring sleeve. It also includes an inductor shell connected to the outer ring, and the inductor shell includes magnetic steel, at least part of which is arranged in the inner cavity of the gear ring sleeve.

[0015] It also includes a retaining frame arranged between the outer ring and the inner ring, the retaining frame is provided with a rolling element, and the half ring is provided with a raceway matched with the rolling element.

[0016] The rolling element is a rolling ball.

[0017] The beneficial effects of the utility model are as follows: the utility model provides a wheel hub bearing unit with a multi-lip mating sealing ring, which can better achieve sealing (after a 144-hour mud and water splashing test, no mud, water or sand should enter the interior of the wheel hub bearing, and no grease should leak out). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0019] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0020] Figure 3 for Figure 1 A magnified schematic diagram of point B in the middle.

[0021] Figure 4 It is a schematic diagram of the prior art. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings: As shown in the figure, the hub bearing unit with a multi-lip mating seal ring includes an inner ring 1 and an outer ring 2, a flange 3 is provided on the inner ring, a seal ring 4 is provided between the inner ring and the outer ring, and the seal ring includes a skeleton 41, a surrounding plate 411, and the surrounding plate is in contact with the inner wall of the outer ring; an outer plate 412 is provided on one side of the surrounding plate and in contact with the axial outer wall of the outer ring; an inner plate 413 is provided on the other side of the surrounding plate and is arranged opposite to the inner wall 11 of the outer ring; a sealing body 42 is connected to the skeleton, and has a first sealing lip 421 for sealing with the outer wall of the flange; a second sealing lip 422 and a third sealing lip 423 are sealed with the circumferential outer wall of the inner ring; and a fourth sealing lip 424 is sealed with the inner wall of the outer ring. A three-section matching skeleton (outer plate, surrounding plate and inner plate) is used to match with the outer ring; and four rubber lips are used to achieve multi-level sealing, especially the fourth sealing lip, which can enhance the sealing effect on the outer ring end.

[0023] In this embodiment, as shown in the figure, an elastic member 5 is also included, which is used to apply force on the sealing body and make the second sealing lip, the third sealing spring and the inner ring seal. Adding an elastic member to fix can effectively prevent the lip from turning over and improve the sealing effect.

[0024] In this embodiment, as shown in the figure, the elastic member is an elastic ring.

[0025] In this embodiment, as shown in the figure, the outer plate is arranged perpendicularly to the enclosure plate, and the inner plate is arranged perpendicularly to the enclosure plate, so that the installation is more stable.

[0026] In this embodiment, as shown in the figure, the outer wall of the inner ring is provided with a half ring 14, and the half ring is provided with a gear ring sleeve 141, and also includes an inductor housing 15 connected to the outer ring, and the inductor housing includes a magnetic steel 151, and at least part of the magnetic steel is arranged in the inner cavity of the gear ring sleeve. The magnetic steel and the housing can be bonded together, and induction can be performed when the inner ring and the outer ring rotate relative to each other. How to sense is a prior art. The feature of this application is that the magnetic steel is placed in the gear ring, which saves more space and is convenient for installation.

[0027] In this embodiment, as shown in the figure, it also includes a cage arranged between the outer ring and the inner ring, the cage is provided with a rolling element 16, and the half ring is provided with a raceway matched with the rolling element. The operation is more stable.

[0028] In this embodiment, as shown in the figure, the rolling element is a rolling ball.

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. A wheel hub bearing unit with a multi-lip mating sealing ring, comprising an inner ring (1) and an outer ring (2), wherein a flange (3) is provided on the inner ring, and a sealing ring (4) is provided between the inner ring and the outer ring, wherein: The sealing ring comprises The frame (41) comprises a surrounding plate (411), the surrounding plate being in contact with the inner wall of the outer ring; an outer plate (412) provided on one side of the surrounding plate and in contact with the axial outer wall of the outer ring; and an inner plate (413) provided on the other side of the surrounding plate and arranged opposite to the inner wall (11) of the outer ring; The sealing body (42) is connected to the frame and has A first sealing lip (421) is used for sealingly cooperating with the outer wall of the flange; The second sealing lip (422) and the third sealing lip (423) are in sealing cooperation with the circumferential outer wall of the inner ring; The fourth sealing lip (424) is sealingly engaged with the inner wall of the outer ring.

2. The wheel hub bearing unit with a multi-lip mating seal ring according to claim 1, characterized in that: It also includes an elastic member (5) for applying force on the sealing body and enabling the second sealing lip, the third sealing spring and the inner ring to seal in cooperation.

3. The wheel hub bearing unit with a multi-lip mating seal ring according to claim 2, characterized in that: The elastic member is an elastic ring.

4. The wheel hub bearing unit with a multi-lip mating seal ring according to claim 3, characterized in that: The outer plate is arranged perpendicularly to the enclosure plate, and the inner plate is arranged perpendicularly to the enclosure plate.

5. The wheel hub bearing unit with a multi-lip mating seal ring according to claim 4, characterized in that: The outer wall of the inner ring is provided with a half ring (14), on which a gear ring sleeve (141) is sleeved, and further comprises an inductor housing (15) connected to the outer ring, the inductor housing comprising a magnetic steel (151), at least part of which is arranged in the inner cavity of the gear ring sleeve.

6. The wheel hub bearing unit with a multi-lip mating seal ring according to claim 5, characterized in that: It also comprises a retaining frame arranged between the outer ring and the inner ring, the retaining frame is provided with a rolling element (16), and the half ring is provided with a raceway matching the rolling element.

7. The wheel hub bearing unit with a multi-lip mating seal ring according to claim 6, characterized in that: The rolling element is a rolling ball.

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