KR20160056633A

KR20160056633A - Wheel nut and Wheel bearing having the same

Info

Publication number: KR20160056633A
Application number: KR1020140157193A
Authority: KR
Inventors: 오상훈
Original assignee: 현대모비스 주식회사
Priority date: 2014-11-12
Filing date: 2014-11-12
Publication date: 2016-05-20

Abstract

The present invention relates to a wheel nut installed in a wheel bearing of a vehicle, comprising: an annular main body; The present invention relates to a wheel nut including an annular magnetic encoder detachably mounted on the main body, and a wheel bearing having the wheel nut. This improves the sealability of the wheel bearing and improves the design freedom of the magnetic encoder.

Description

WHEEL NUTS AND WHEEL BEARINGS HAVING THE SAME

The present invention relates to a wheel nut and a wheel bearing having the wheel nut. More particularly, to a wheel bearing used for a wheel of a vehicle and a wheel nut used for the wheel bearing.

BACKGROUND OF THE INVENTION [0002] Generally, an automotive wheel bearing rotatably connects a wheel to a vehicle body, thereby enabling the vehicle to move.

1 and 2, the conventional wheel bearing 2 may include a hub 10, an outer ring 20, an inner ring 30, a bearing chamber 40, and a wheel speed sensor 50 . Here, a magnetic encoder 41 is attached to one side of the bearing chamber 40.

The magnetic encoder 41 is rotated while the inner wheel 30 of the conventional wheel bearing 2 rotates because the magnetic encoder 41 is attached to one side of the bearing chamber 40. Therefore,

The sensing performance of the wheel speed sensor 50 increases as the magnetic force of the magnetic encoder 41 increases, and the magnetic force increases as the width T of the magnetic encoder increases.

However, since the magnetic encoder 41 installed in the conventional bearing chamber 40 is applied to a limited space called the bearing chamber 40, the range of the magnetic encoder 41 is limited when the magnetic force is required to be increased. Particularly, in the case of a compact car having a small size of the wheel bearing 2, it is more problematic.

2, the magnetic encoder 41 must always be adhered to a specific portion of the bearing chamber 40, so that the bearing chamber 40 is restricted in designing degree of freedom in designing .

Korean Patent Publication No. 10-2014-0071166 (2014.06.11)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a wheel nut detachably mounted on a wheel nut to improve magnetic force and freedom of design, and a wheel bearing having the wheel nut.

According to the present invention, there is provided a wheel nut mounted on a wheel bearing of a vehicle, comprising: an annular main body; And an annular magnetic encoder detachably mounted on the main body.

The main body further includes an annular press-in portion protruding from an inner circumferential surface side edge, and an inner circumferential surface of the magnetic encoder can be press-fitted to an outer circumferential surface of the press-in portion.

The magnetic encoder may have a predetermined radius according to the sensing performance of the wheel speed sensor mounted on the wheel bearing.

This object is achieved according to the present invention by a method of manufacturing a semiconductor device comprising a hub; A bearing portion provided between the outer ring and the hub; And a wheel nut installed to shield one side of the bearing portion. The wheel nut includes an annular main body and an annular magnetic encoder detachably mounted on the main body.

Further, the wheel nut is screwed to one end of the hub to press the bearing part.

The wheel nut according to the preferred embodiment of the present invention having the above-described structure includes the magnetic encoder separately provided from the bearing portion and detachably attached to the bearing portion, thereby facilitating the magnetic force increase by increasing the area of the magnetic encoder Do.

Further, since the magnetic encoder is detachably attached to the wheel nut, the freedom of design is high and maintenance is easy.

Further, the wheel bearing according to the preferred embodiment of the present invention having the above-described structure is provided with the wheel nut at one side of the bearing portion, so that foreign substances are prevented from being introduced into the bearing portion, thereby improving sealing performance.

Figs. 1 and 2 are views showing a conventional wheel bearing,
3 and 4 are an exploded perspective view and a combined perspective view showing a wheel bearing according to a preferred embodiment of the present invention,
5 is a sectional view of a wheel bearing according to a preferred embodiment of the present invention,
6 is a view showing a wheel nut according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to clarify the solution to the technical problem of the present invention. In the following description of the present invention, however, the description of related arts will be omitted if the gist of the present invention becomes obscure. In addition, the terms described below are defined in consideration of the functions of the present invention, and may be changed depending on the intention or custom of the designer, the manufacturer, and the like. Therefore, the definition should be based on the contents throughout this specification. In addition, parts denoted by the same reference numerals throughout the specification represent the same elements.

Hereinafter, a wheel bearing 1 according to a preferred embodiment of the present invention will be described with reference to FIGS. 3 to 6. FIG.

The wheel bearing 1 is a power transmission device for transmitting the power generated by the engine to wheels. The wheel bearing 1 includes a bearing (not shown) between the outer ring 20 and the inner ring 30, So as to smoothly rotate the wheel.

3 to 5, a wheel bearing 1 according to a preferred embodiment of the present invention includes a hub 10, an outer ring 20, an inner ring 30, a wheel speed sensor 50, (60), a bearing portion (100), and a wheel nut (200).

The hub 10 is connected to an end of an axle (not shown), and the outer ring 20 is connected to a vehicle body.

One end of the coupling member 60 is connected to the inner circumferential surface of the inner ring 30 so that the hub 10, the outer ring 20, the bearing portion 100, The wheel nut 200 and the like are fixed.

That is, by the engagement of the engaging member 60 and the inner ring 30, the hub 10 and the inner ring 30 connected to the axle rotate according to the rotation of the axle.

The bearing portion 100 is installed between the hub 10 and the outer ring 20, as shown in Figs.

The bearing portion 100 allows the hub 10 and the inner ring 30 to rotate as the axle rotates while the outer ring 20 is fixedly supported by the vehicle body.

Meanwhile, the wheel nut 200 is installed to shield one side of the bearing part 100 as shown in FIG.

More specifically, the wheel nut 200 is screwed to one end of the hub 10 to press the bearing portion 100 and shield one side of the bearing portion 100. Accordingly, a thread may be formed on the inner circumferential surface of the body 210 of the wheel nut 200.

As shown in FIG. 5, the wheel nut 200 pre-pressurizes the bearing part 100, and prevents foreign matter from entering the bearing part 100, thereby enhancing the sealability.

Referring to FIG. 6, the wheel nut 200 may include a main body 210 and a magnetic encoder 220.

That is, the wheel nut 200 can be formed with a magnetic force on the surface of the wheel nut 200 by integrating the magnetic encoder 200 with the main body 210.

The main body 210 may be formed in an annular shape, as shown in Fig.

The main body 210 may include an annular press-fitting portion 211 protruding from the inner peripheral side edge.

The magnetic encoder 220 may be formed in an annular shape and may be removably installed in the main body 210. Accordingly, the magnetic encoder 220 is easy to maintain.

Referring to FIG. 6, the annular magnetic encoder 220 may be installed on the outer peripheral surface of the press-fit portion 211 by a fitting method. That is, the inner circumferential surface of the magnetic encoder 210 is press-fitted into the outer circumferential surface of the press-

The wheel bearing 1 may further include a wheel speed sensor 50 provided adjacent to the wheel nut 200 to measure the rotational speed of the wheel.

The sensing performance of the wheel speed sensor 50 depends on the width T of the magnetic encoder 220. [

That is, as the magnetic force of the magnetic encoder 220 is increased, the sensing performance of the wheel speed sensor 50 is improved. The magnetic force is proportional to the width T of the magnetic encoder 220.

6, since the magnetic encoder 220 is limited only in the radial direction of the magnetic encoder 220 on the side of the press-in portion 211, and is open in the opposite direction, the magnetic encoder 220, It is easy to increase the width (T) As the width T of the magnetic encoder 220 increases, the area of the magnetic encoder 220 also increases.

Therefore, the wheel bearing 1 can overcome the limit of the magnetic encoder 41 installed in the bearing chamber 40 of the conventional wheel bearing 2 (design limit placed in a limited space). Accordingly, the sensing performance of the wheel speed sensor 50 can be improved even in the case of a compact car.

That is, the wheel bearing 1 can control the intensity of the magnetic force by adjusting the width T of the magnetic encoder 220 as necessary.

The magnitude of the magnetic force depends on the radius R of the magnetic encoder 220 according to the limitation of the press-fitting portion 211 as described above.

The wheel bearing 1 may be constructed such that the wheel nut 200 on which the magnetic encoder 220 is mounted is separately constructed so that the magnetic encoder 220 which controls the magnitude of the magnetic force Increase the degree of design freedom.

In addition, the wheel nut 200 is screwed to one end of the hub 10 to pre-press the one side of the bearing part 100, thereby enhancing the sealability.

It should be understood that the various embodiments according to the present invention can solve various technical problems other than those mentioned in the specification in the related technical field as well as the related art.

The present invention has been described with reference to the embodiments. It will be apparent, however, to one skilled in the art that the present invention may be embodied in various other forms without departing from the spirit or essential characteristics thereof. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. That is, the true technical scope of the present invention is indicated in the appended claims, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

1, 2: Wheel bearing
10: hub 20: outer ring
30: Inner wheel 50: Wheel speed sensor
60: coupling member 100: bearing portion
200: Wheel nut 210: Body
220: Magnetic encoder

Claims

A wheel nut installed in a wheel bearing of a vehicle,
An annular body;
And an annular magnetic encoder detachably mounted on the main body.

The method according to claim 1,
Wherein the main body further includes an annular press-fit portion formed to protrude from an inner circumferential side edge, and an inner circumferential surface of the magnetic encoder is press-fitted to an outer circumferential surface of the press-fit portion.

3. The method of claim 2,
Wherein the magnetic encoder is formed to have a predetermined radius according to a sensing performance of a wheel speed sensor installed on the wheel bearing.

Herb;
A bearing portion provided between the outer ring and the hub; And
And a wheel nut installed to shield one side of the bearing portion,
Wherein the wheel nut includes an annular main body and an annular magnetic encoder detachably mounted on the main body.

5. The method of claim 4,
Wherein the main body further includes an annular press-fit portion formed to protrude from an inner circumferential side edge, and an inner circumferential surface of the magnetic encoder is press-fitted to an outer circumferential surface of the press-fit portion.

6. The method of claim 5,
Wherein the magnetic encoder is formed with a predetermined radius according to a sensing capability of a wheel speed sensor further installed to detect the magnetic encoder.

5. The method of claim 4,
And the wheel nut is screwed to one end of the hub to press the bearing.