CN216618546U - Electric tool oil seal and motor shaft sealing structure - Google Patents
Electric tool oil seal and motor shaft sealing structure Download PDFInfo
- Publication number
- CN216618546U CN216618546U CN202123270854.6U CN202123270854U CN216618546U CN 216618546 U CN216618546 U CN 216618546U CN 202123270854 U CN202123270854 U CN 202123270854U CN 216618546 U CN216618546 U CN 216618546U
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- sealing
- groove
- oil seal
- lip
- ring body
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- Sealing Of Bearings (AREA)
Abstract
The utility model discloses an electric tool oil seal and motor shaft sealing structure, comprising: the metal framework comprises a connecting ring body and a vertical ring body fixed on the outer side of the connecting ring body; the sealing ring, the sealing ring is fixed with the connection ring body, the inner wall of sealing ring is equipped with grease seal lip and dust lip, be equipped with the connection annular on the outer wall of sealing ring, it establishes on the connection annular to connect the ring body cover, the setting of grease seal lip is in the upper end that is close to the sealing ring, the lower extreme near the sealing ring of dust lip setting, be equipped with two parallel grooves between grease seal lip and the dust lip, one of them parallel groove sets up in the position that is close to grease seal lip, another parallel groove sets up in the position that is close to the dust lip. According to the utility model, the metal framework is pressed into the sealing groove, and the metal rigidity is far greater than that of rubber, so that the oil seal can be better prevented from popping up when being vibrated, and the supporting strength and the sealing performance are better.
Description
Technical Field
The utility model belongs to the technical field of oil seals, and particularly relates to an electric tool oil seal and a motor shaft sealing structure.
Background
Generally, the power tool is used in a very harsh environment. When the tool works, impact force caused by cutting or drilling can generate larger counter impact force to the oil seal. In addition in the use, a large amount of dust piles up the lip, and the life-span of oil blanket is lower, simultaneously, because electric tool's vibrations are great, the oil blanket external diameter is not hard up easily, causes the oil blanket to become invalid, finally causes the complete machine of machine to become invalid.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electric tool oil seal and a motor shaft sealing structure, which can prevent the oil seal from popping up when the oil seal is vibrated, and have better supporting strength and sealing effect.
In order to achieve the purpose, the utility model provides the following technical scheme: an electric tool oil seal comprising:
the metal framework comprises a connecting ring body and a vertical ring body fixed on the outer side of the connecting ring body;
the sealing ring is fixed with the connecting ring body, and the inner wall of the sealing ring is provided with a grease sealing lip and a dust lip.
Furthermore, the outer wall of the sealing ring is provided with a connecting ring groove, and the connecting ring body is sleeved on the connecting ring groove.
Further, the grease seal lip is arranged at the upper end close to the seal ring, and the dust-proof lip is arranged at the lower end close to the seal ring.
Furthermore, two parallel grooves are arranged between the grease sealing lip and the dust lip, one of the parallel grooves is arranged at a position close to the grease sealing lip, and the other parallel groove is arranged at a position close to the dust lip.
Furthermore, the two parallel grooves are transited through a connecting arc-shaped groove.
Further, the outer side of the upper end of the vertical ring body is provided with a chamfer.
The utility model also discloses a motor shaft sealing structure which comprises an installation shell, a bearing, a motor shell, a motor shaft and the oil seal, wherein the installation shell comprises a sealing groove with an upward opening and a bearing groove with a downward opening, the sealing groove and the bearing groove are communicated through a communicating groove, the bearing is installed in the bearing groove, the oil seal is installed in the sealing groove, and the motor shaft sequentially penetrates through the bearing, the communicating groove and the oil seal.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the metal framework is pressed into the sealing groove, the metal framework is in interference fit with the inner wall of the sealing groove, and the metal rigidity is far greater than that of rubber, so that the oil seal can be better prevented from being popped up when being vibrated, and the support strength and the sealing are better;
(2) the parallel grooves can lock grease between the grease sealing lip and the dust lip, so that the grease can be ensured to be always positioned at the lip tip part, and the grease is prevented from being lost.
Drawings
FIG. 1 is a schematic view of the structure of the oil seal of the present invention;
fig. 2 is a schematic structural view of the motor shaft sealing structure of the present invention.
In the figure: 1. chamfering; 2. a vertical ring body; 3. a connecting ring body; 4. a metal skeleton; 5. a connecting ring groove; 6. a dust lip; 7. parallel grooves; 8. lubricating grease; 9. a grease sealing lip; 10. the arc-shaped groove is connected; 11. installing a shell; 12. a sealing groove; 13. oil sealing; 14. a motor shaft; 15. a communicating groove; 16. a bearing; 17. a motor housing; 18. a bearing groove; 19. and (4) a sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides an oil seal for an electric tool, which comprises: an electric tool oil seal comprising:
the metal framework 4 comprises a connecting ring body 3 and a vertical ring body 2 fixed on the outer side of the connecting ring body 3;
the material of sealing ring 19, sealing ring 19 sets up to be rubber, and sealing ring 19 is fixed with connecting ring body 3, and the inner wall of sealing ring 19 is equipped with grease seal lip 9 and dust lip 6.
The outer wall of the vertical ring body 2 is ground, so that the outer diameter of the vertical ring body can be well controlled, and the vertical ring body is convenient to press fit onto the mounting shell 11. Because the metal rigidity is far greater than that of rubber, the oil seal 13 can be better prevented from popping up when being vibrated, and the supporting strength and the sealing effect of the oil seal 13 are enhanced. The dust lip 6 is intended to resist the ingress of dust. The grease seal lip 9 can effectively prevent the lubricating grease 8 in the electric tool from flowing out, and the service life of the whole electric tool is prolonged. Because the temperature rise of the electric tool during working is higher, the lubricating grease 8 can effectively reduce abrasion, and the service life of the oil seal 13 is prolonged.
The lower part is connected with the sealing ring 19 and the connecting ring body 3, a connecting ring groove 5 is arranged on the outer wall of the sealing ring 19, and the connecting ring body 3 is sleeved on the connecting ring groove 5.
Grease seal lip 9 sets up in the upper end that is close to sealing ring 19, and dust lip 6 sets up the lower extreme that is close to sealing ring 19, is equipped with two parallel grooves 7 between grease seal lip 9 and the dust lip 6, passes through between two parallel grooves 7 and connect the arc wall 10 transition, and one of them parallel groove 7 sets up in the position that is close to grease seal lip 9, and another parallel groove 7 sets up in the position that is close to dust lip 6. The parallel groove 7 can lock grease between the grease seal lip 9 and the dust lip 6, so that the grease 8 can be ensured to be always positioned at the lip tip part, the loss is prevented, the service life of the oil seal 13 is further prolonged, and the service life of the whole machine is prolonged.
In addition, the outer side of the upper end of the vertical ring body 2 is provided with a chamfer 1.
The utility model also discloses a motor shaft 14 sealing structure which comprises an installation shell 11, a bearing 16, a motor shell 17, a motor shaft 14 and the oil seal 13, wherein the installation shell 11 comprises a sealing groove 12 with an upward opening and a bearing groove 18 with a downward opening, the sealing groove 12 and the bearing groove 18 are communicated through a communicating groove 15, the bearing 16 is installed in the bearing groove 18, the oil seal 13 is installed in the sealing groove 12, the vertical ring body 2 of the oil seal 13 is in interference fit with the inner wall of the sealing groove 12, and the motor shaft 14 sequentially penetrates through the bearing 16, the communicating groove 15 and the oil seal 13.
The chamfer 1 on the vertical ring 2 allows to avoid interference at the corners of the vertical ring 2 and of the sealing groove 12.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An electric tool oil seal, comprising:
the metal framework comprises a connecting ring body and a vertical ring body fixed on the outer side of the connecting ring body;
the sealing ring is fixed with the connecting ring body, and the inner wall of the sealing ring is provided with a grease sealing lip and a dust lip.
2. The electric tool oil seal as claimed in claim 1, wherein the outer wall of the sealing ring is provided with a connecting ring groove, and the connecting ring body is sleeved on the connecting ring groove.
3. The electric tool oil seal as claimed in claim 1, wherein the grease seal lip is disposed adjacent an upper end of the seal ring, and the dust lip is disposed adjacent a lower end of the seal ring.
4. An electric tool oil seal according to claim 3, wherein two parallel grooves are provided between the grease seal lip and the dust lip, one of the parallel grooves being provided at a position close to the grease seal lip, and the other parallel groove being provided at a position close to the dust lip.
5. The electric tool oil seal as claimed in claim 4, wherein the two parallel grooves are transited by a connecting arc-shaped groove.
6. The electric tool oil seal as claimed in claim 1, wherein the outer side of the upper end of the vertical ring body is provided with a chamfer.
7. A motor shaft sealing structure is characterized by comprising an installation shell, a bearing, a motor shell, a motor shaft and the oil seal of any one of claims 1 to 6, wherein the installation shell comprises a sealing groove with an upward opening and a bearing groove with a downward opening, the sealing groove and the bearing groove are communicated through a communicating groove, the bearing is installed in the bearing groove, the oil seal is installed in the sealing groove, and the motor shaft sequentially penetrates through the bearing, the communicating groove and the oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123270854.6U CN216618546U (en) | 2021-12-23 | 2021-12-23 | Electric tool oil seal and motor shaft sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123270854.6U CN216618546U (en) | 2021-12-23 | 2021-12-23 | Electric tool oil seal and motor shaft sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216618546U true CN216618546U (en) | 2022-05-27 |
Family
ID=81705292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123270854.6U Active CN216618546U (en) | 2021-12-23 | 2021-12-23 | Electric tool oil seal and motor shaft sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216618546U (en) |
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2021
- 2021-12-23 CN CN202123270854.6U patent/CN216618546U/en active Active
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