阅读说明：本技术 一种储油双唇边密封圈 (Oil storage double-lip sealing ring ) 是由 李鑫 常九健 储亚峰 于 2020-11-19 设计创作，主要内容包括：本发明公开了储油双唇边密封圈,其特征在于：包括密封圈本体及设于所述密封圈本体一侧的密封唇边,所述密封唇边设有上下布置的两条；所述密封圈本体设有密封唇边的一侧为动密封侧,另一侧为静密封侧,所述静密封侧与所述动密封侧之间设有连通的导油孔。本发明储油双唇边密封圈,结构简单,易于生产加工,密封润滑效果好,具有较强的实用性和较好的应用前景。(The invention discloses an oil storage double-lip edge sealing ring, which is characterized in that: the sealing ring comprises a sealing ring body and two sealing lip edges arranged on one side of the sealing ring body, wherein the two sealing lip edges are arranged up and down; one side of the sealing ring body, which is provided with the sealing lip edge, is a dynamic sealing side, the other side of the sealing ring body is a static sealing side, and an oil guide hole communicated with the dynamic sealing side is arranged between the static sealing side and the dynamic sealing side. The oil storage double-lip-edge sealing ring disclosed by the invention is simple in structure, easy to produce and process, good in sealing and lubricating effects, and has stronger practicability and better application prospect.)

1. The utility model provides a two lip seal circle of oil storage which characterized in that: the sealing ring comprises a sealing ring body and two sealing lip edges arranged on one side of the sealing ring body, wherein the two sealing lip edges are arranged up and down; one side of the sealing ring body, which is provided with the sealing lip edge, is a dynamic sealing side, the other side of the sealing ring body is a static sealing side, and an oil guide hole communicated with the dynamic sealing side is arranged between the static sealing side and the dynamic sealing side.

2. The oil retaining double lip seal according to claim 1, wherein: an oil storage cavity is formed between the sealing lips, and an oil storage tank is arranged on the static sealing side.

3. The oil storage double-lip sealing ring according to claim 2, characterized in that: the oil storage cavity and the oil storage tank are both annularly arranged along the sealing ring.

4. The oil storage double-lip sealing ring according to claim 3, characterized in that: the oil guide hole is communicated with the oil storage tank and the oil storage cavity.

5. The oil storage double-lip sealing ring according to claim 4, characterized in that: and a plurality of oil guide holes are uniformly arranged at intervals along the circumferential direction of the oil storage tank.

6. The oil storage double-lip seal ring according to any one of claims 1 to 5, wherein: the sealing lips are arranged up and down and are of symmetrical structures which are respectively turned outwards upwards and downwards.

7. The oil retaining double lip seal according to claim 6, wherein: the edge end of the sealing lip is of an arc-shaped structure.

8. The oil retaining double lip seal according to claim 1, wherein: the mounting groove is arranged on the shaft or the hole wall which is sealed relatively.

9. The oil retaining double lip seal according to claim 8, wherein: the static sealing side is installed in interference fit with the installation groove.

Technical Field

The invention belongs to the technical field of sealing, and particularly relates to an oil storage double-lip sealing ring.

Background

The wheel hub motor is the higher project of research heat in recent years, owing to install in automobile wheel hub, the sealing washer between motor stator, the rotor plays the effect that prevents surface ponding, impurity entering motor. Because there is not fluid environment, when the wheel high-speed rotation, the sealing washer between motor stator, the rotor will be direct with by sealed face contact, the heat that the friction produced leads to the sealing washer inflation, with by the contact pressure of sealing member further increase, the friction phenomenon aggravation more. Moreover, the sealing ring is made of soft material, and the relative motion of the sealing ring and the sealed surface causes the surface of the sealing ring to be worn, gradually degenerates and even loses the sealing capability, thereby seriously affecting the working reliability of the hub motor.

The dynamic sealing technology becomes a key technology for high-reliability research and development of the hub motor, in order to reduce the abrasion degree of the sealing ring under the working condition of dry friction and dynamic sealing, the abrasion resistance of the sealing ring is sometimes improved by improving the material of the sealing ring, or the sealing ring is frequently replaced, however, the improved material of the sealing ring is yet to be researched, and the frequent replacement of the sealing ring is not suitable for vehicles running for a long distance, so that the redesign of the sealing ring structure can effectively improve the abrasion resistance of the sealing ring, and the dynamic sealing technology has a strong promotion effect on the research and development of the hub motor in.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an oil storage double-lip sealing ring which is simple in structure, easy to produce and process and good in sealing and lubricating effects.

In order to achieve the purpose, the invention adopts the technical scheme that: the oil storage double-lip sealing ring is characterized in that: the sealing ring comprises a sealing ring body and two sealing lip edges arranged on one side of the sealing ring body, wherein the two sealing lip edges are arranged up and down; one side of the sealing ring body, which is provided with the sealing lip edge, is a dynamic sealing side, the other side of the sealing ring body is a static sealing side, and an oil guide hole communicated with the dynamic sealing side is arranged between the static sealing side and the dynamic sealing side.

In order to make the technical scheme more detailed and concrete, the invention also provides the following further preferable technical scheme to obtain satisfactory practical effect:

an oil storage cavity is formed between the sealing lips, and an oil storage tank is arranged on the static sealing side.

The oil storage cavity and the oil storage tank are both annularly arranged along the sealing ring.

The oil guide hole is communicated with the oil storage tank and the oil storage cavity.

And a plurality of oil guide holes are uniformly arranged at intervals along the circumferential direction of the oil storage tank.

The sealing lips are arranged up and down and are of symmetrical structures which are respectively turned outwards upwards and downwards.

The edge end of the sealing lip is of an arc-shaped structure.

The mounting groove is arranged on the shaft or the hole wall which is sealed relatively.

The static sealing side is installed in interference fit with the installation groove.

Compared with the prior art, the invention has the following advantages: the oil storage double-lip-edge sealing ring disclosed by the invention is simple in structure, easy to produce and process, good in sealing and lubricating effects, and has stronger practicability and better application prospect.

Drawings

The contents of the drawings and the reference numerals in the drawings of the present specification will be briefly described as follows:

FIG. 1 is a schematic cross-sectional view of a seal ring of the present invention;

FIG. 2 is a side view in half section of a seal ring according to a first embodiment of the present invention;

FIG. 3 is a schematic view of a first embodiment (hole-mounting structure) of the seal ring of the present invention;

FIG. 4 is a side view in half section of a seal ring according to a second embodiment of the present invention;

fig. 5 is a schematic view of a seal ring according to a second embodiment (shaft mounting structure) of the present invention.

Labeled as: 1. sealing lip edge, 2, oil guide hole, 3, oil storage tank, 4, oil storage cavity, 5, dynamic sealing side, 6, static sealing side, 7, hole wall, 8, shaft, 9, mounting groove, 10 and injection hole.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.

The oil storage double-lip edge sealing ring comprises a sealing ring body and two sealing lip edges 1 arranged on one side of the sealing ring body, wherein the two sealing lip edges 1 are arranged up and down; one side of the sealing ring body, which is provided with the sealing lip edge, is a dynamic sealing side 5, the other side is a static sealing side 6, and an oil guide hole 2 communicated with the dynamic sealing side 5 is arranged between the static sealing side 6 and the dynamic sealing side 5. In the invention, an oil storage cavity 4 is formed between the sealing lips 1, and an oil storage tank 3 is arranged on the static sealing side 6. The oil storage cavity 4 and the oil storage tank 3 are both arranged along the ring shape of the sealing ring. The oil guide hole 2 is communicated with the oil storage tank 3 and the oil storage cavity 4.

In the invention, the oil storage tank 3 is arranged on the static sealing side of the sealing ring and is a groove which is continuously distributed in the circumferential direction and is used for storing lubricating oil/grease. A plurality of oil guide holes 2 which are uniformly arranged at intervals are formed in the circumferential direction of the oil storage tank 3 to meet the requirement of conducting grease and meet the requirement of lubricating one side of the dynamic sealing ring. Lead 2 oilholes to appear inside the sealing washer structure, lead 2 both ends of oilhole and communicate in oil storage chamber 4 and oil storage tank 3 respectively, and the number is no less than 1, and number more than or equal to 2 is along circumferencial direction evenly distributed when individual.

In the invention, the sealing lips 1 are arranged up and down and are in a symmetrical structure which turns outwards upwards and downwards respectively. The edge end of the sealing lip 1 is in an arc-shaped structure. The sealing lip edges 1 are arranged on the dynamic sealing side of the sealing ring, are two in total and are of a symmetrical outwards-turned structure, the edge ends of the sealing lip edges 1 are of an arc structure and are only contacted with a sealed piece at the end part, and the part near the root part is not contacted with the sealed piece, so that the dynamic sealing requirement is ensured. The oil reservoir chamber 4 is present in the space near the root of the sealing lip, which is not in contact with the member to be sealed, for storing the lubricating oil/grease.

In the present invention, the mounting groove 9 can be formed on the shaft 8 or the hole wall 7 which is relatively sealed, so as to form the hole mounting structure and the shaft mounting structure shown in fig. 3 and 5. The static sealing side 6 is arranged in interference fit with the mounting groove 9. The geometric dimension of the section of the static sealing side 6 is compared with the dimension of the section of the mounting groove 9, and the static sealing side has certain interference, and can be tightly attached to the mounting groove after being mounted.

The oil storage double-lip structure comprises a static sealing side 6 and a dynamic sealing side 5, wherein the dynamic sealing side 5 is provided with two sealing lip edges 1, an oil storage cavity 4 is formed between the sealing lip edges 1, the static sealing side 6 is provided with an oil storage tank 3, and an oil guide hole 2 for communicating the oil storage cavity 4 with the oil storage tank 3 is reserved in the static sealing side 6. The static sealing side 6 refers to the surface of the sealing ring contacted with the mounting groove 9, and the dynamic sealing side 5 refers to the surface of the sealing ring contacted with the sealed piece. The sealing lip 1 is an outward-turning projection structure of the dynamic sealing side 5 of the sealing ring. The oil storage chamber 4 is a space between two lips of the dynamic sealing side 5 of the sealing ring, which is not contacted with a sealed piece. The oil reservoir 3 is a circumferential groove on the static sealing side 6 of the sealing ring. The oil guide holes 2 are spaces distributed along the circumferential direction of the sealing ring and communicated with the oil storage cavity 4 and the oil storage tank 3.

The shaft mounting structure and the hole mounting structure refer to a hole surface and a shaft surface which are in contact with the dynamic sealing side of the sealing ring. The shaft mounting structure is suitable for occasions that the mounting groove 9 is arranged on a shaft, and the dynamic sealing side 6 of the sealing ring is in contact with the hole surface; the hole mounting structure is suitable for occasions that the mounting groove 9 is arranged on a hole, and the dynamic sealing side 6 of the sealing ring is in contact with the shaft surface.

The invention can be used for working conditions that static sealing and dynamic sealing are required at the same time and no oil exists, the double lips of the dynamic sealing side 5 can realize bidirectional sealing, the oil storage cavity 4 can be used for storing lubricating oil/grease, an oil film is established on the dynamic sealing side, the friction wear caused by high-speed contact with a sealed piece is reduced, the oil storage tank 3 can be communicated with an external oil/grease supply interface to store the lubricating oil/grease, and the hole can convey the lubricating oil/grease in the oil storage tank 3 to the oil storage cavity 4, so that the continuous lubricating effect of the dynamic sealing side 5 is realized. The invention has simple structure, easy production and processing and convenient popularization and use.

As shown in figure 1, static seal side 6 contains 3 surfaces, and the axial dimension of mounting groove 9 slightly is less than the axial dimension of static seal side 6, can guarantee like this that this sealing washer structure has certain precompression volume after the installation, can make static seal side 6 and mounting groove 9 closely laminate, both can promote static sealing performance, can increase the static frictional force between static seal side 6 and the mounting groove 9 again, prevents to appear relative slip between the two.

The sealing lips 1 are distributed on the dynamic sealing side 5 and are in a symmetrical outwards-turned structure, and the two sealing lips 5 are only contacted with the hole wall 7 or the shaft 8 at the end part and are not contacted near the root part.

The oil reservoir 4 is present in the root of the sealing lip 1 and is a space which does not come into contact with the bore wall 7 or the shaft 8 and which stores the lubricant/grease. The oil reservoir 3 is formed on a surface of the static seal side 6 and has a groove continuously formed in a circumferential direction for storing lubricating oil/grease. The oil guide holes 2 are formed inside the oil storage cavity, and the two ends of the oil guide holes are respectively connected with the oil storage cavity 4 and the oil storage groove 3 and are uniformly distributed in the circumferential direction.

The hole mounting structure corresponds to the structure of the embodiment shown in fig. 2 and 3, the mounting groove 9 is formed on the hole wall 7, the dynamic seal side 5 is contacted with the shaft 8, and oil/grease is injected into the oil storage tank 3 through the injection hole 10 positioned on the hole wall 7. The shaft mounting structure corresponds to the structure of the embodiment shown in fig. 4 and 5, the mounting groove 9 is opened on the shaft 8, the dynamic seal side 5 contacts with the hole wall 7, and oil/grease is injected into the oil storage tank 3 through the injection hole 10 positioned on the shaft 8.

The oil storage double-lip-edge sealing ring disclosed by the invention is simple in structure, easy to produce and process, good in sealing and lubricating effects, and has stronger practicability and better application prospect.

The invention has been described above with reference to the accompanying drawings, but the invention is not limited to the above-described embodiments, and it is within the scope of the invention to use various insubstantial modifications of the inventive concept and solutions or to apply them directly to other applications.