CN210715936U - U-shaped sealing ring and sealing structure thereof - Google Patents
U-shaped sealing ring and sealing structure thereof Download PDFInfo
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- CN210715936U CN210715936U CN201921266884.XU CN201921266884U CN210715936U CN 210715936 U CN210715936 U CN 210715936U CN 201921266884 U CN201921266884 U CN 201921266884U CN 210715936 U CN210715936 U CN 210715936U
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- water retaining
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Abstract
The utility model provides a U type sealing washer and seal structure thereof, relates to seal structure technical field, and U type sealing washer includes U type sealing washer body, U type sealing washer body comprises built-in skeleton and outer rubber of wrapping up in, the one end of built-in skeleton is provided with the turn-ups, the turn-ups position of outer rubber of wrapping up in built-in skeleton forms convex lip. The utility model discloses a turn-ups position of wrapping up in rubber parcel built-in skeleton forms the convex lip and increases the sealing performance of U type sealing washer, its simple structure, simultaneously the utility model discloses a combine in rotor casing, stator casing with U type sealing washer, increase external rotor electric machine's leakproofness, its protection level reaches IP 67.
Description
Technical Field
The utility model relates to a seal structure technical field especially relates to a U type sealing washer and seal structure thereof.
Background
The outer rotor motor saves space, has compact and attractive design, is suitable for being installed in the impeller and has the best cooling effect, and is widely applied to the field of fans. However, because the rotor of the outer rotor motor is arranged outside the stator, the rotating part is large, the sealing structure of the rotating part is difficult to achieve a higher protection level, and the requirements of dust prevention and rain prevention on IP56 can be generally met, but the requirements of complete dust prevention and soaking prevention on IP67 cannot be met.
Generally, the outer rotor motor meeting the protection level requirement of IP56 adopts sealing elements such as a waterproof cover and a waterproof ring, but a gap needs to be arranged between the sealing element and a rotating component to ensure the rotation of the outer rotor motor. The sealing part of the scheme can not be abraded due to the rotation of the motor, but can only achieve IP56 at most, is dustproof and rainproof, and is not suitable for the outer rotor motor with higher protection level requirements.
The outer rotor motor which generally meets the protection level requirements of IP67 and above usually adopts a mode of wrapping the electromagnetic parts of the stator and the rotor, and has the disadvantages of complex process, high structural requirements and high cost.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model is to avoid the weak point in the prior art and provide a U-shaped sealing ring, this U-shaped sealing ring simple structure, protection level reaches IP 67.
The purpose of the utility model is realized through the following technical scheme:
the U-shaped sealing ring comprises a U-shaped sealing ring body, wherein the U-shaped sealing ring body is composed of a built-in framework and wrapped rubber, a flanging is arranged at one end of the built-in framework, and the portion, wrapped by the rubber, of the flanging of the built-in framework forms a convex lip. The flange can provide support for the lip, ensuring the effectiveness of the seal.
Furthermore, the built-in skeleton is an elastic skeleton.
Further, the wrapping rubber is made of polyurethane rubber or a material with similar performance. The material has better wear resistance and aging resistance, and can prolong the service life.
The utility model discloses a second aim at avoid the weak point among the prior art and provide a seal structure, this seal structure simple structure, the protection level reaches IP 67.
The purpose of the utility model is realized through the following technical scheme:
the sealing structure comprises a rotor shell, a stator shell and a sealing ring, wherein the sealing ring is the U-shaped sealing ring.
Further, the rotor casing is provided with a rotor casing annular water retaining platform, and the stator casing is provided with a stator casing annular water retaining platform.
Furthermore, the U-shaped concave part of the U-shaped sealing ring is arranged on the annular water retaining platform of the rotor shell, and the lip part of the U-shaped sealing ring and the annular water retaining platform of the stator shell form sealing.
Further, the first installation inner diameter phi d of the U-shaped sealing ring1Smaller than the outer diameter phi d of the annular water retaining platform of the rotor shell3And the second installation inner diameter phi d of the U-shaped sealing ring2Greater than the inner diameter phi d of the annular water retaining platform of the rotor casing4The compactness of the sealing structure is increased.
Further, the outer diameter phi d of the annular water retaining platform of the rotor shell3Smaller than the inner diameter phi d of the annular water retaining platform of the stator casing5The compactness of the sealing structure is increased.
Furthermore, the inner diameter surface of the annular water retaining platform of the stator casing is a smooth surface, so that the abrasion of the sealing ring when the annular water retaining platform of the stator casing is in contact with the lip of the sealing ring is reduced, the sealing reliability is improved, and the service life of the annular water retaining platform of the stator casing is prolonged.
The utility model has the advantages that: 1. the utility model discloses a U type sealing washer, including U type sealing washer body, U type sealing washer body comprises built-in skeleton and the outer rubber of wrapping up in, the one end of built-in skeleton is provided with the turn-ups, the turn-ups position of the built-in skeleton of rubber parcel that wraps up in forms convex lip, the utility model discloses a turn-ups position of the built-in skeleton of rubber parcel that wraps up in forms convex lip and increases the sealing performance of U type sealing washer, its simple structure simultaneously. 2. The utility model discloses a sealing structure, including rotor casing, stator casing and above-mentioned U type sealing washer, the utility model discloses an in combining rotor casing, stator casing with U type sealing washer, increase external rotor electric machine's leakproofness, its simple structure simultaneously.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is a schematic cross-sectional structure view of a U-shaped sealing ring of the present invention.
Fig. 2 is a schematic view of a partially enlarged structure of a sealing structure of the present invention.
Fig. 3 is a schematic structural view of the first installation inner diameter and the second installation inner diameter of the U-shaped sealing ring of the present invention.
Fig. 4 is a schematic cross-sectional view of a rotor casing with a sealed structure according to the present invention.
Fig. 5 is a schematic cross-sectional view of a stator casing with a sealing structure according to the present invention.
The figure includes:
the rotor sealing ring structure comprises a U-shaped sealing ring 1, a built-in framework 11, an outer wrapping rubber 12, a flange 13, a lip 14, a rotor shell 2, a rotor shell annular water retaining platform 21, a stator shell 3 and a stator shell annular water retaining platform 31.
Detailed Description
The invention will be further described with reference to the following examples.
The U-shaped seal ring of the present embodiment, as shown in fig. 1, includes a U-shaped seal ring 1 body, the U-shaped seal ring 1 body is composed of a built-in skeleton 11 and an externally wrapped rubber 12, a flange 13 is provided at one end of the built-in skeleton 11, and a convex lip 14 is formed at a position where the externally wrapped rubber 12 wraps the flange 13 of the built-in skeleton 11. The flange 13 can provide support for the lip 14, prevent the lip 14 from being extruded and worn, and ensure the effectiveness of sealing.
The built-in skeleton 11 is an elastic skeleton.
The wrapping rubber 12 is made of polyurethane rubber or a material with similar performance. The material has better wear resistance and aging resistance, and can prolong the service life.
The utility model also provides a seal structure, as shown in fig. 2-5, including rotor casing 2, stator casing 3, sealing washer, the sealing washer is above-mentioned U type sealing washer 1.
The rotor housing 2 is provided with a rotor housing annular water retaining platform 21, and the stator housing 3 is provided with a stator housing annular water retaining platform 31.
The first installation inner diameter phi d of the U-shaped sealing ring 11Smaller than the outer diameter phi d of the annular water retaining platform 21 of the rotor casing3And the second installation inner diameter phi d of the U-shaped sealing ring 12Is larger than the inner diameter phi d of the rotor shell annular water retaining platform 214。
The outer diameter phi d of the annular water retaining platform 21 of the rotor shell3Smaller than the inner diameter Phid of the stator casing annular water baffle 315。
U type concave part of U type sealing washer 1 just in time tight fit installs on rotor casing annular water retaining platform 21, and rotor casing annular water retaining platform 21 is at stator casing annular water retaining platform 31 internal rotation, the lip 14 of U type sealing washer 1 and the internal diameter contact of stator casing annular water retaining platform 31 form sealedly, and the height of two water retaining platforms is for assembling the back, and U type sealing washer 1 on the rotor casing annular water retaining platform 21 does not contact stator casing 3. The entry of external harmful substances into the interior of the motor through the gap between the stator housing 3 and the rotor housing 2 is prevented.
The inner diameter surface of the stator casing annular water retaining platform 31 is a smooth surface so as to reduce the abrasion of the sealing ring when the stator casing annular water retaining platform contacts with the lip portion 14 of the U-shaped sealing ring 1, improve the sealing reliability and prolong the service life of the stator casing annular water retaining platform.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The utility model provides a U type sealing washer, includes U type sealing washer body, its characterized in that: the U-shaped sealing ring body is composed of a built-in framework and externally wrapped rubber, a flanging is arranged at one end of the built-in framework, and a protruding lip is formed at the position, wrapped with the rubber, of the flanging of the built-in framework.
2. A U-shaped seal ring according to claim 1, wherein: the built-in skeleton is an elastic skeleton.
3. A U-shaped seal ring according to claim 1, wherein: the wrapping rubber is polyurethane rubber.
4. The utility model provides a seal structure, includes rotor casing, stator casing, sealing washer, its characterized in that: the sealing ring is the U-shaped sealing ring according to any one of claims 1 to 3.
5. A sealing structure according to claim 4, wherein: the rotor casing is provided with a rotor casing annular water retaining platform, and the stator casing is provided with a stator casing annular water retaining platform.
6. A sealing structure according to claim 5, wherein: the U-shaped concave part of the U-shaped sealing ring is arranged on the annular water retaining platform of the rotor shell, and the lip part of the U-shaped sealing ring forms sealing with the annular water retaining platform of the stator shell.
7. A sealing structure according to claim 5, wherein: the first installation inner diameter phi d of the U-shaped sealing ring1Smaller than the outer diameter phi d of the annular water retaining platform of the rotor shell3And the second installation inner diameter phi d of the U-shaped sealing ring2Greater than the inner diameter phi d of the annular water retaining platform of the rotor casing4。
8. A sealing structure according to claim 5, wherein: outer diameter phi d of annular water retaining platform of rotor shell3Smaller than the inner diameter phi d of the annular water retaining platform of the stator casing5。
9. A sealing structure according to claim 5, wherein: the inner diameter surface of the annular water retaining platform of the stator casing is a smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921266884.XU CN210715936U (en) | 2019-08-07 | 2019-08-07 | U-shaped sealing ring and sealing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921266884.XU CN210715936U (en) | 2019-08-07 | 2019-08-07 | U-shaped sealing ring and sealing structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210715936U true CN210715936U (en) | 2020-06-09 |
Family
ID=70929802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921266884.XU Active CN210715936U (en) | 2019-08-07 | 2019-08-07 | U-shaped sealing ring and sealing structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210715936U (en) |
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2019
- 2019-08-07 CN CN201921266884.XU patent/CN210715936U/en active Active
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