Hub bearing and its sealing device
A technology of wheel hub bearing and sealing device, applied in the field of wheel hub bearing and wheel hub bearing sealing device, can solve the problems of difficult starting and affect the performance of wheel hub bearing, and achieve the effect of low rotation speed, providing sealing effect and reducing starting torque.
Active Publication Date: 2019-06-14
SCHAEFFLER TECH AG & CO KG
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- Abstract
- Description
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- Application Information
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Problems solved by technology
Furthermore, due to the high starting torque, it is not easy to start, so the traditional hub bearing needs a more powerful driving device, which affects the performance of the hub bearing
Method used
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Embodiment Construction
[0054] In the following detailed description of the illustrative embodiments, reference will be made to Figure 3-4 Various features and aspects of the invention are described.
[0055] image 3 A partial cross-sectional view of a hub bearing including a hub bearing sealing device according to an embodiment of the present invention is shown. Figure 3A show image 3 Enlarged view of part X of the sealing device of the hub bearing shown.
[0056] exist image 3 Among them, the hub bearing is a double-row ball bearing, including: outer ring 1; inner ring 3; cage (not shown) for holding double-row balls (not marked); used to cover inner ring 3 and outer ring 1 The seal 2 (such as rubber material) in the space defined therebetween; and the seal retaining ring 4 arranged on the outside of the seal 2 in the axial direction of the hub bearing. The inner ring 3, the outer ring 1, the sealing member 2 and the sealing retaining ring 4 constitute the sealing device of the hub bearin...
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The present invention relates to a wheel hub bearing and its sealing device. The hub bearing sealing device includes an inner ring, an outer ring, an annular seal of the hub bearing, and a sealing retaining ring, the sealing retaining ring is fixed to the inner ring, and the outer circumference of the sealing member is fixed to the outer ring. There is a metal skeleton inside the seal, the seal is fixed on the outer ring through the metal skeleton, and the seal is provided with a sealing lip on the metal skeleton, and the sealing lip is in interference contact with the sealing retaining ring. Another metal skeleton layer is also arranged inside the seal, which is arranged radially inside the metal skeleton and has a different thermal expansion coefficient from the metal skeleton, and forms a bimetallic skeleton with the metal skeleton. When the sealing device is working, the bimetallic skeleton can dynamically adjust the interference between the sealing lip and the sealing ring according to the change of temperature. According to the wheel hub bearing of the present invention, the starting torque is small, the sealing effect under working conditions is good, the structure is simple, reliable and easy to maintain.
Description
technical field [0001] In a first aspect, the invention relates to a sealing arrangement for a hub bearing. More specifically, the present invention relates to a hub bearing sealing device in which a space between an inner ring and an outer ring of a hub bearing is covered with a seal, and a sealing retainer is provided on an outer side of the seal in the axial direction. In a second aspect, the invention relates to a hub bearing. Background technique [0002] Hub bearings for use in vehicles, for example, include a sealing device that covers a space between an outer ring and an inner ring with an annular seal, thereby inhibiting foreign matter such as water and dust from intruding inside the bearing and preventing grease from leaking. In addition, because the hub bearing needs to allow relative rotation between the inner ring and the outer ring, the outer circumference of the seal is fixed to the outer ring, and the inner circumference of the seal is brought into sliding c...
Claims
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IPC IPC(8): F16C33/78
CPCF16C33/7883F16J15/164F16J15/3264F16C19/184F16C19/525F16C2326/02B60B27/0073F16J15/32F16C19/18F16C33/7823
Inventor 张建昌柴仲冬贺晨曦
Owner SCHAEFFLER TECH AG & CO KG