Novel-structure hub bearing unit for driven wheel

Abstract

The novel-structure hub bearing unit comprises an outer flange and an inner flange, a high-lip sealing piece is arranged between an inner hole in the left side of the outer flange and the inner flange, a half inner ring is arranged on the shaft diameter of the right side of the inner flange in an interference fit mode, and two inner raceways are arranged in the outer flange. Outer raceways are arranged outside the half inner rings and the inner flange, two rows of rolling bodies are arranged between the inner raceways and the outer raceways, a stepped through hole is formed in the axis position of the inner flange, an inner dust cover is arranged on a right step of the through hole, and an outer dust cover is arranged in a right inner hole of the outer flange, so that the weight of a product is effectively reduced, and relative friction of rotating parts is reduced; therefore, the driving resistance is reduced, the fuel consumption of the automobile is effectively reduced, the energy efficiency is improved, and a positive effect is also achieved on the current tail gas emission and environmental protection requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, and more specifically to a new-structure wheel hub bearing unit for a passive wheel. Background Art

[0002] Wheel hub bearings support wheel rotation and transmit vehicle loads. Their primary functions are to reduce friction, support rotation, and withstand the vehicle's vertical and horizontal loads. Currently, most wheel hub bearings feature a solid inner flange axis and a combined seal structure consisting of a sealing ring and L-shaped dust cover between the right inner hole of the outer flange and the outer diameter of the large end of the semi-inner ring.

[0003] The solid form increases the weight of the product, which is not conducive to lightweighting. The combined seal of the sealing ring and the L-shaped ring dust cover rotates relative to each other after close fit, which makes the friction torque greater, which is not conducive to the fuel and electricity consumption of the car. Moreover, because the sealing ring and the L-shaped ring dust cover rotate relative to each other in contact, relative friction loss will inevitably occur, affecting the long-term sealing performance during use. Utility Model Content

[0004] The purpose of this utility model is to address the deficiencies of the existing technology and provide a new structural hub bearing unit for a passive wheel. The axis of the inner flange of this type of hub bearing unit is set as a stepped through hole, which effectively reduces the weight of the product. An inner dust cover is provided at the right step of the through hole, and a fully enclosed outer dust cover is provided at the right inner hole of the outer flange. The inner dust cover and the outer dust cover cooperate in a non-contact manner to seal and dustproof the product, so there will be no relative friction loss that affects its long-term sealing performance, and the rotational torque of the product generated by the contact friction of the components is reduced, thereby reducing the driving resistance of the vehicle.

[0005] The technical solutions of this utility model are as follows:

[0006] A new structural hub bearing unit for a passive wheel comprises an outer flange and an inner flange, a high lip seal is provided between the inner hole on the left side of the outer flange and the inner flange, a half inner ring is provided on the right side of the inner flange for interference fit, two inner raceways are provided inside the outer flange, outer raceways are provided outside the half inner ring and the inner flange, two rows of rolling elements are provided between the inner and outer raceways, a stepped through hole is provided at the axial center position of the inner flange and an inner dust cover is provided on the step on the right side of the through hole, and an outer dust cover is provided on the inner hole on the right side of the outer flange.

[0007] As a preference, a nylon retainer is provided between the inner and outer raceways.

[0008] As a preferred embodiment, an ABS gear ring is interference-fitted on the cylindrical surface of the inner flange and the ABS gear ring is arranged between the two rows of rolling elements.

[0009] As a preference, an ABS sensor is fixedly mounted on the boss of the peripheral contour surface of the outer flange. The ABS sensor is fixed on the outer flange by screws and is positioned opposite to the outer diameter of the ABS gear ring.

[0010] As a preferred embodiment, the semi-inner ring and the inner flange are assembled into one body by riveting.

[0011] As a preference, a plurality of high-strength hub bolts are evenly arranged on the inner flange, and a plurality of threaded holes are symmetrically arranged on the outer flange.

[0012] As a preference, each row of rolling elements is provided with a plurality of steel balls with a diameter of 11.1125 and the steel balls are evenly distributed in the ball pockets of the nylon cage.

[0013] The beneficial effects of the present utility model are:

[0014] 1. The utility model sets the inner flange axis as a stepped through-hole structure, which can effectively reduce the weight of the product and achieve lightweight product.

[0015] 2. The utility model seals the product by non-contact cooperation between the inner dust cover and the outer dust cover, so there will be no relative friction loss that affects its long-term sealing performance. At the same time, the rotational torque generated by the contact friction of the components of the product is reduced, thereby reducing the driving resistance of the vehicle, reducing the vehicle's fuel consumption and exhaust emissions, and reducing the power consumption of current electric vehicles.

[0016] In summary, the utility model has the advantages of good dust sealing effect and light weight, and is suitable for the technical field of automobile parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 Schematic diagram of the structure of the hub bearing unit;

[0019] Figure 2 Schematic diagram of the cross-sectional structure of the hub bearing unit;

[0020] Figure 3 Schematic diagram of the structure of the inner dust cover;

[0021] Figure 4 Schematic diagram of the structure of the outer dust cover;

[0022] Reference numerals: 1-outer flange, 2-half inner ring, 3-inner flange, 4-rolling element, 5-nylon retainer, 6-high lip seal, 7-ABS ring gear, 8-ABS sensor, 9-wheel hub bolt, 10-screw, 11-inner dust cover, 12-outer dust cover. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] Example 1

[0025] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] like Figures 1 to 4 As shown, a new structural hub bearing unit for a passive wheel includes an outer flange 1 and an inner flange 3. A high lip seal 6 is provided between the inner hole on the left side of the outer flange 1 and the inner flange 3. A half inner ring 2 is provided on the right side of the shaft diameter of the inner flange 3 for interference fit. Two inner raceways are provided inside the outer flange 1, and outer raceways are provided outside the half inner ring 2 and the inner flange 3. Two rows of rolling elements 4 are provided between the inner and outer raceways. A stepped through hole is provided at the axial center position of the inner flange 3 and an inner dust cover 11 is provided on the step on the right side of the through hole. An outer dust cover 12 is provided on the inner hole on the right side of the outer flange 1.

[0027] Among them, Figure 2 As shown, a nylon cage 5 is provided between the inner and outer raceways to prevent the steel balls from colliding with each other, thereby avoiding abnormal wear and reducing noise during the operation of the bearing hub.

[0028] In addition, if Figure 2 As shown, an ABS gear ring 7 is interference-fitted on the cylindrical surface of the inner flange 3 and the ABS gear ring 7 is arranged between two rows of rolling elements 4 .

[0029] It should be further explained that if Figure 2 As shown, an ABS sensor 8 is fixedly installed on the boss of the peripheral contour surface of the outer flange 1. The ABS sensor 8 is fixed on the outer flange 1 by screws 10 and the ABS sensor 8 is located opposite the outer diameter of the ABS ring gear 7. Real-time monitoring of the wheel speed is achieved through the ABS ring gear 7 and the ABS sensor 8.

[0030] It is worth mentioning that Figure 2 As shown, the half inner ring 2 and the inner flange 3 are assembled into one body by riveting process, thereby improving the overall strength of the hub bearing.

[0031] Furthermore, if Figure 1 As shown, a number of high-strength hub bolts 9 are evenly arranged on the flange plate of the inner flange 3, and a number of threaded holes are symmetrically arranged on the flange plate of the outer flange 1, which facilitates installation while increasing load and strength.

[0032] In addition, if Figure 2 As shown, each row of rolling elements 4 is provided with a number of φ11.1125 steel balls and the steel balls are evenly distributed in the ball pockets of the nylon retainer 5, which reduces torque loss and improves the rotation smoothness of the hub bearing.

[0033] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0034] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0035] What is described above in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. A novel structural hub bearing unit for a driven wheel, comprising an outer flange (1) and an inner flange (3), characterized in that: A high lip seal (6) is provided between the inner hole on the left side of the outer flange (1) and the inner flange (3); a half inner ring (2) is provided on the right side of the shaft diameter of the inner flange (3) in an interference fit; two inner raceways are provided inside the outer flange (1); outer raceways are provided outside the half inner ring (2) and the inner flange (3); two rows of rolling elements (4) are provided between the inner and outer raceways; a stepped through hole for reducing the weight of the product is provided at the axial center position of the inner flange (3); an inner dust cover (11) is provided on the step on the right side of the through hole; an outer dust cover (12) is provided on the right side of the inner hole of the outer flange (1).

2. The novel structure hub bearing unit for a driven wheel according to claim 1 is characterized in that: A nylon retainer (5) is provided between the inner and outer raceways.

3. The novel structure hub bearing unit for a driven wheel according to claim 1 is characterized in that: An ABS gear ring (7) is interference-fitted on the cylindrical surface of the inner flange (3), and the ABS gear ring (7) is arranged between two rows of rolling elements (4).

4. The novel structure hub bearing unit for a driven wheel according to claim 3 is characterized in that: An ABS sensor (8) is fixedly arranged on a boss on the peripheral contour surface of the outer flange (1); the ABS sensor (8) is fixedly arranged on the outer flange (1) by means of screws (10), and the ABS sensor (8) is positioned opposite to the outer diameter of the ABS gear ring (7).

5. The novel structure hub bearing unit for a driven wheel according to claim 1 is characterized in that: The semi-inner ring (2) and the inner flange (3) are assembled into one body by using a riveting process.

6. The novel structure hub bearing unit for a driven wheel according to claim 1, characterized in that: A plurality of high-strength hub bolts (9) are evenly arranged on the flange plate of the inner flange (3), and a plurality of threaded holes are symmetrically arranged on the flange plate of the outer flange (1).

7. The novel structure hub bearing unit for a driven wheel according to claim 2, characterized in that: Each row of rolling elements (4) is provided with a plurality of steel balls with a diameter of 11.1125, and the steel balls are evenly distributed in the ball pockets of the nylon retaining frame (5).

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