CN216666490U

CN216666490U - Ultralow rotary friction moment wheel hub sealing washer

Info

Publication number: CN216666490U
Application number: CN202122544126.3U
Authority: CN
Inventors: 陈增宝; 孙卫华; 凌毅; 高水权; 叶桐
Original assignee: Anhui Cooper Sealing Technology Co ltd
Current assignee: Anhui Cooper Sealing Technology Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-06-03
Anticipated expiration: 2031-10-21

Abstract

The utility model provides a hub sealing ring with ultralow rotary friction torque, which comprises a rubber sealing body, a first metal framework and a second metal framework; the first metal framework comprises a first framework part, a second framework part and a third framework part; the second metal framework comprises a fourth framework part and a fifth framework part; the rubber sealing body comprises a first rubber body and a second rubber body, the first rubber body is fixedly attached to the inner side face of the fourth framework portion, the second rubber body is fixedly attached to the inner side face of the fifth framework portion, a first sealing lip extending towards the third framework portion is formed at one end, away from the second rubber body, of the first rubber body, and a second sealing lip, a third sealing lip extending towards the inner side of the third framework portion and a fourth sealing lip extending towards the outer side of the first framework portion are sequentially formed on the second rubber body. The utility model can ensure that the friction torque of the hub sealing ring is greatly reduced while the sealing effect and the service life of the sealing ring are not influenced in the use process of the sealing ring.

Description

Ultralow rotary friction moment wheel hub sealing washer

Technical Field

The utility model relates to a sealing ring, in particular to a hub sealing ring with ultra-low rotary friction torque.

Background

The main sealing medium of the bearing sealing ring is mineral lubricating grease, synthetic lubricating grease, animal and vegetable oil and the like. Along with the wearing and tearing of seal lip in the use, the radial pressure of sealing washer can reduce, and then reduces the sealing washer performance. Along with the development of automobile fuel economy, people begin to pay attention to energy conservation and emission reduction, and on the basis that the traditional sealing ring can guarantee the normal sealing effect, low friction torque is pursued, the friction torque of the sealing ring is small, the energy loss of a vehicle is small, and the fuel economy is further optimized and improved. Therefore, the structure of the sealing ring is reasonably designed, the friction torque of the sealing ring is reduced, and the key effect on the quality and the service life of the hub unit is played

SUMMERY OF THE UTILITY MODEL

Based on the technical problems in the background art, the utility model provides a hub sealing ring with ultralow rotating friction torque.

The utility model provides a hub sealing ring with ultralow rotary friction torque, which comprises a rubber sealing body, a first metal framework and a second metal framework;

the first metal framework comprises a first framework part, a second framework part and a third framework part which are of annular structures, the first framework part and the third framework part are arranged oppositely, the first framework part and the third framework part are positioned on the same side of the second framework part, and the first framework part and the third framework part are respectively connected with the inner side end and the outer side end of the second framework part;

the second metal framework comprises a fourth framework part and a fifth framework part which are of annular structures, the fourth framework part is positioned outside the third framework part, the fifth framework part is arranged opposite to the second framework part and is connected with the fourth framework part, and gaps are reserved among the fifth framework part, the third framework part and the first framework part;

the rubber sealing body comprises a first rubber body and a second rubber body, the first rubber body is fixedly attached to the inner side face of the fourth framework portion, the second rubber body is fixedly attached to the inner side face of the fifth framework portion, the first rubber body and the second rubber body are integrally connected, a gap is formed between the first rubber body and the third framework portion, a first sealing lip extending towards the third framework portion is formed at one end, away from the second rubber body, of the first rubber body, and the first sealing lip is in clearance fit with the third framework portion; and a second sealing lip extending towards the inner side of the third framework part, a third sealing lip extending towards the inner side of the second framework part and a fourth sealing lip extending towards the outer side of the first framework part are sequentially formed on the second rubber body from one end close to the first rubber body to one end far away from the first rubber body, the second sealing lip is in clearance fit with the third framework part, the third sealing lip is in interference fit with the inner side surface of the second framework part, and the fourth sealing lip is in interference fit with the outer side surface of the first framework part.

Preferably, the second sealing lip has an arcuate cross-section and its arcuate opening faces away from the third sealing lip.

Preferably, the third sealing lip has an arcuate cross-section with its arcuate opening facing away from the fourth sealing lip.

Preferably, the fourth sealing lip is integrally formed with a thickened rubber body on the side close to the third sealing lip.

Preferably, a first seal cavity is formed among the first seal lip, the second seal lip and the third framework portion, a second seal cavity is formed among the second seal lip, the third seal lip, the second framework portion and the third framework portion, and a third seal cavity is formed among the third seal lip, the fourth seal lip and the second framework portion.

Preferably, one end, far away from the first rubber body, of the second rubber body is provided with a fifth sealing lip which extends towards the first framework portion and is located on the outer side of the fourth sealing lip, the fifth sealing lip is in clearance fit with the first framework portion, and a fourth sealing cavity is formed among the fifth sealing lip, the fourth sealing lip and the first framework portion.

Preferably, one end of the first rubber body, which is far away from the second rubber body, extends to the outer side of the fourth framework portion and is adhered to the outer side face of the fourth framework portion.

Preferably, one end of the second rubber body, which is far away from the first rubber body, extends to the outer side of the fifth framework part and is adhered to the outer side face of the fifth framework part.

According to the hub sealing ring with the ultra-low rotating friction torque, the second sealing lip is in clearance fit with the first metal framework, so that muddy water entering the sealing ring can flow back, the contact area between the second sealing lip and the first metal framework can be greatly reduced, the sealing effect of the sealing ring is enhanced, and the rotating torque is greatly reduced; the fourth sealing lip is provided with the thickened rubber body, the traditional structure that the sealing lip is reinforced by a spring is replaced, the spring is not required to be installed, the production process is reduced, the production efficiency is improved, the production cost is saved, and compared with the old structure with the spring, the friction torque of the novel sealing lip is reduced by one part; under the common improvement of the second sealing lip and the fourth sealing lip, the rotary friction torque of the whole sealing ring is greatly reduced; meanwhile, in the whole sealing ring, under the combined action of the first sealing lip, the second sealing lip, the third sealing lip, the fourth sealing lip and the fifth sealing lip, the excellent sealing performance of the sealing ring is guaranteed, the friction torque of the sealing ring is reduced, the energy loss of a vehicle is small, the fuel economy is further optimized and improved, and the sealing ring has great significance for meeting emission indexes. The utility model can ensure that the friction torque of the hub sealing ring is greatly reduced while the sealing effect and the service life of the sealing ring are not influenced in the use process of the sealing ring.

Drawings

Fig. 1 is a schematic structural view of a hub sealing ring with ultra-low rotational friction torque according to the present invention;

fig. 2 is a working schematic diagram of the ultra-low rotational friction torque hub sealing ring provided by the utility model.

Detailed Description

Referring to fig. 1, the utility model provides an ultra-low rotational friction torque hub sealing ring, which comprises a rubber sealing body 1, a first metal framework 2 and a second metal framework 3; wherein:

the first metal framework 2 includes a first framework portion, a second framework portion and a third framework portion which are of annular structures, the first framework portion and the third framework portion are arranged oppositely, the first framework portion and the third framework portion are located on the same side of the second framework portion, and the first framework portion and the third framework portion are respectively and vertically connected with the inner side end and the outer side end of the second framework portion.

The second metal skeleton 3 includes a fourth skeleton portion and a fifth skeleton portion of an annular structure, the fourth skeleton portion is located outside the third skeleton portion, the fifth skeleton portion is arranged opposite to the second skeleton portion, the fifth skeleton portion is vertically connected with the fourth skeleton portion, and gaps are reserved between the fifth skeleton portion and the third skeleton portion as well as between the fifth skeleton portion and the first skeleton portion.

The rubber sealing body 1 includes a first rubber body adhered to the inner side surface of the fourth skeleton portion and a second rubber body adhered to the inner side surface of the fifth skeleton portion, and the first rubber body and the second rubber body are integrally connected. A gap is formed between the first rubber body and the third framework portion, a first sealing lip A extending towards the third framework portion is formed at one end, far away from the second rubber body, of the first rubber body, and the first sealing lip A is in clearance fit with the third framework portion. The second sealing lip B extending towards the inner side of the third framework portion, the third sealing lip C extending towards the inner side of the second framework portion and the fourth sealing lip D extending towards the outer side of the first framework portion are sequentially formed on the second rubber body from one end close to the first rubber body to one end far away from the first rubber body, the second sealing lip B is in clearance fit with the third framework portion, the third sealing lip C is in interference fit with the inner side face of the second framework portion, the fourth sealing lip D is in interference fit with the outer side face of the first framework portion, the second sealing lip B is provided with an arc-shaped cross section, and an arc-shaped opening of the second sealing lip B faces away from the third sealing lip C. The third seal lip C has an arc-shaped cross section and an arc-shaped opening of the third seal lip C faces away from the fourth seal lip D, and a thickened rubber body E is integrally formed on one side of the fourth seal lip D close to the third seal lip C. One end, far away from the first rubber body, of the second rubber body is provided with a fifth sealing lip F which extends towards the first framework part and is positioned on the outer side of the fourth sealing lip D, and the fifth sealing lip F is in clearance fit with the first framework part.

When the assembling shaft is used, the fourth framework part of the second metal framework 3 and the rubber sealing body 1 are in interference fit with the assembling hole, and the first metal framework 2 is in interference fit with the assembling shaft.

In this embodiment, a first seal cavity 4 is formed between the first seal lip a, the second seal lip B and the third skeleton portion, a second seal cavity 5 is formed between the second seal lip B, the third seal lip C, the second skeleton portion and the third skeleton portion, a third seal cavity 6 is formed between the third seal lip C, the fourth seal lip D and the second skeleton portion, and a fourth seal cavity 7 is formed between the fifth seal lip F, the fourth seal lip D and the first skeleton portion.

In a specific embodiment, one end of the first rubber body, which is far away from the second rubber body, extends to the outer side of the fourth framework portion and is adhered to the outer side face of the fourth framework portion. One end, far away from the first rubber body, of the second rubber body extends to the outer side of the fifth framework portion and is adhered to the outer side face of the fifth framework portion.

The first sealing lip A of the rubber sealing body 1 is a first defense line for blocking muddy water, dust and foreign matters, and a narrow channel is formed with the outer wall of the third framework part to block most of muddy water and dust, so that the second sealing lip B and the third sealing lip C of the rubber sealing body 1 are prevented from being directly exposed in the muddy water, and the service life is greatly prolonged; meanwhile, the first sealing lip A also has the functions of guiding and preventing the first metal framework 2 from falling off when the first metal framework 2 is installed. As shown in fig. 2, when muddy water enters the first seal cavity 4, most of muddy water undergoes an internal circulation in the direction of the arrow, and the muddy water is discharged out of the seal ring again, so that most of muddy water is prevented from entering the second seal cavity 5, the contact between the muddy water and the third seal lip C is reduced, the service life of the third seal lip C of the rubber seal body' is prolonged, after the third seal lip C fails, the muddy water enters the third seal cavity 6, and the fourth seal lip D is protected by the last layer, so that the external muddy water is prevented from entering the inside of the seal ring bearing. Fifth seal lip F is clearance fit surface contactless with first metal framework 2, and inside grease gets into fourth seal cavity 7 by the fifth seal lip F of rubber seal 1, prevents under the effect of the fourth seal lip D of rubber seal 1 that the grease from revealing and get into third seal cavity 6, if the fourth seal lip D of rubber seal 1 seals inefficacy, then during the grease gets into third seal cavity 6, the third seal lip C of rubber seal 1 is the last line of defence that prevents inside grease from revealing. So whole wheel hub sealing washer is by a plurality of rubber seal lips and a plurality of seal chamber group cooperations are constituteed jointly, first seal chamber 4, second seal chamber 5, third seal chamber 6, fourth seal chamber 7 all has sufficient storage space, even preceding one seal lip can not become invalid immediately because of wearing and tearing whole sealing washer of inefficacy, a plurality of seal chambers have been formed, the sealing system of a plurality of seal lip combined action mutual guarantee, like this can also maximize when realizing the super low moment of torsion of wheel hub sealing washer and guarantee the sealing performance and the life of whole wheel hub oil blanket.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A hub sealing ring with ultralow rotary friction torque is characterized by comprising a rubber sealing body (1), a first metal framework (2) and a second metal framework (3);

the first metal framework (2) comprises a first framework part, a second framework part and a third framework part which are of annular structures, the first framework part and the third framework part are arranged oppositely and are positioned on the same side of the second framework part, and the first framework part and the third framework part are respectively connected with the inner side end and the outer side end of the second framework part;

the second metal framework (3) comprises a fourth framework part and a fifth framework part which are of annular structures, the fourth framework part is positioned outside the third framework part, the fifth framework part is arranged opposite to the second framework part and is connected with the fourth framework part, and gaps are reserved among the fifth framework part, the third framework part and the first framework part;

the rubber sealing body (1) comprises a first rubber body and a second rubber body, the first rubber body is fixedly attached to the inner side face of the fourth framework portion, the second rubber body is fixedly attached to the inner side face of the fifth framework portion, the first rubber body and the second rubber body are integrally connected, a gap is formed between the first rubber body and the third framework portion, a first sealing lip (A) extending towards the third framework portion is formed at one end, away from the second rubber body, of the first rubber body, and the first sealing lip (A) is in clearance fit with the third framework portion; and a second sealing lip (B) extending towards the inner side of the third framework part, a third sealing lip (C) extending towards the inner side of the second framework part and a fourth sealing lip (D) extending towards the outer side of the first framework part are sequentially formed on the second rubber body from one end close to the first rubber body to one end far away from the first rubber body, the second sealing lip (B) is in clearance fit with the third framework part, the third sealing lip (C) is in interference fit with the inner side surface of the second framework part, and the fourth sealing lip (D) is in interference fit with the outer side surface of the first framework part.

2. Ultra low rotational friction torque hub seal ring according to claim 1, characterized in that the second sealing lip (B) has an arc-shaped cross section and its arc-shaped opening faces away from the third sealing lip (C).

3. Ultra low rotational friction torque hub seal ring according to claim 1, characterized in that the third sealing lip (C) has an arc-shaped cross section and its arc-shaped opening faces away from the fourth sealing lip (D).

4. The ultra low rotational friction torque hub seal ring according to any one of claims 1 to 3, wherein the side of the fourth seal lip (D) adjacent to the third seal lip (C) is integrally formed with a thickened rubber body (E).

5. The ultra-low rotational friction torque hub seal ring according to any one of claims 1 to 3, wherein a first seal cavity (4) is formed between the first seal lip (A), the second seal lip (B) and the third skeleton portion, a second seal cavity (5) is formed between the second seal lip (B), the third seal lip (C), the second skeleton portion and the third skeleton portion, and a third seal cavity (6) is formed between the third seal lip (C), the fourth seal lip (D) and the second skeleton portion.

6. The ultra-low rotating friction torque hub sealing ring according to any one of claims 1 to 3, wherein a fifth sealing lip (F) which extends towards the first framework portion and is located on the outer side of the fourth sealing lip (D) is arranged at one end, away from the first rubber body, of the second rubber body, the fifth sealing lip (F) is in clearance fit with the first framework portion, and a fourth sealing cavity (7) is formed among the fifth sealing lip (F), the fourth sealing lip (D) and the first framework portion.

7. The ultra-low rotating friction torque hub seal ring according to any one of claims 1 to 3, wherein one end of the first rubber body, which is far away from the second rubber body, extends to the outside of the fourth skeleton portion and is adhered to the outside surface of the fourth skeleton portion.

8. The ultra low rotational friction torque hub seal ring according to any one of claims 1 to 3, wherein one end of the second rubber body, which is far away from the first rubber body, extends to the outside of the fifth skeleton portion and is adhered to the outside surface of the fifth skeleton portion.