CN220452546U - Sealing device and novel universal joint adopting same - Google Patents
Sealing device and novel universal joint adopting same Download PDFInfo
- Publication number
- CN220452546U CN220452546U CN202322035110.9U CN202322035110U CN220452546U CN 220452546 U CN220452546 U CN 220452546U CN 202322035110 U CN202322035110 U CN 202322035110U CN 220452546 U CN220452546 U CN 220452546U
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- CN
- China
- Prior art keywords
- lip
- sealing ring
- sealing
- universal joint
- bearing sleeve
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- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Sealing Of Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The patent discloses a sealing device and adopt its novel universal joint, wherein sealing device includes: the inner sealing ring is characterized in that a sealing cover is arranged on one side of the inner sealing ring, the sealing ring comprises a sealing ring body, an upper lip is arranged on the upper portion of the sealing ring body, a middle lip is arranged below the upper lip, a bottom lip is arranged on the outer side of the bottom of the sealing ring body, and a groove is formed in the inner side of the bottom lip. The bearing sleeve solves the problem that a bearing sleeve in the prior art is not easy to insert on a cross shaft.
Description
Technical Field
The utility model relates to a transmission part, in particular to a sealing device and a novel universal joint adopting the same.
Background
"a cross-shaft universal joint" (publication number: CN 2743603Y) disclosed in chinese patent, 2005, 11 and 30, which includes: the anti-dust device comprises a cross shaft, a bearing sleeve, a thrust washer, a needle roller, a sealing ring and a dust cover, wherein the dust cover is arranged at the opening end of the bearing sleeve, and the inner side of the dust cover is tightly attached to a shaft head of the cross shaft. However, when the bearing sleeve is sleeved on the outer ring of the cross shaft, air in the bearing sleeve cannot effectively pass through the sealing ring and the dust cover, so that the bearing sleeve can only be partially inserted on the cross shaft, and cannot be conveniently inserted into the bottom of the cross shaft, and great difficulty is brought to assembly.
Disclosure of Invention
The utility model aims to provide a sealing device which solves the problem that a bearing sleeve in the prior art is not easy to insert on a cross shaft.
To achieve one object of the present utility model, there is provided a sealing device comprising: the inner sealing ring is characterized in that a sealing cover is arranged on one side of the inner sealing ring, the sealing ring comprises a sealing ring body, an upper lip is arranged on the upper portion of the sealing ring body, a middle lip is arranged below the upper lip, a bottom lip is arranged on the outer side of the bottom of the sealing ring body, and a groove is formed in the inner side of the bottom lip.
The cross section of the inner sealing ring is L-shaped.
The sealing ring body is in an inverted L shape.
An upper lip is arranged above the middle lip.
The upper lip is an elastic upper lip, the middle lip is an elastic middle lip, and the lower lip is an elastic lower lip.
Another object of the present utility model is to provide a novel universal joint employing the above sealing device, comprising: the cross shaft is provided with a bearing sleeve at each of four ends, a needle roller is arranged in the bearing sleeve, an inner sealing ring is arranged at the inner side of the needle roller in each bearing sleeve, and a sealing device is arranged at the inner side of the inner sealing ring.
The inner sealing ring is positioned in the bearing sleeve.
The bottom lip is exposed outside the bearing sleeve.
A needle blocking ring is arranged between the inner sealing ring and the needle roller.
The utility model adopts the inner sealing ring and the sealing ring which are matched with each other, so that the middle lip is retracted inwards in the process of inserting the bearing sleeve into the cross shaft, thereby facilitating the air in the bearing sleeve to be discharged, and greatly facilitating the installation of the cross shaft and the bearing sleeve. And when the bearing sleeve is inserted into the bottom, the middle lip resets and is matched with the upper lip and the lower lip to play a role of isolating the bearing sleeve, so that external pollutants are effectively prevented from entering the bearing sleeve, and the service life of the bearing is prolonged.
Drawings
Fig. 1 is a sectional view of an embodiment of the present utility model, fig. 2 is a partially enlarged view of a portion a of fig. 1, and fig. 3 is a partially enlarged view of a seal ring portion B of fig. 2.
Detailed Description
The universal joint of the present utility model as shown in fig. 1, 2 and 3 includes: the cross 1, four ends of the cross 1 are respectively provided with a bearing sleeve 2, the bearing sleeves 2 are internally provided with rolling pins 3, the inner side of each bearing sleeve inner rolling pin 3 is provided with an inner sealing ring 4, the inner side of each inner sealing ring is provided with a sealing ring 5, and each sealing ring comprises: the sealing ring comprises a sealing ring body, wherein an upper lip 501 is arranged on the upper portion of the sealing ring body, a middle lip 502 is arranged below the upper lip 501, a bottom lip 503 is arranged on the outer side of the bottom of the sealing ring body, a groove 504 is formed in the inner side of the bottom lip 503, and the groove 504 is used for containing lubricating grease. A framework 505 is provided within the seal ring body. The bottom lip 503 is exposed outside the bearing housing 2. A needle blocking ring 6 is arranged between the inner sealing ring 4 and the needle roller 3.
When the bearing sleeve 2 is inserted into the cross shaft 1, the middle lip which is arranged downwards in an inclined manner on the sealing ring is rubbed by the inner wall of the bearing sleeve 2, and the end part of the middle lip is downwards folded to form a gap with the inner wall of the bearing sleeve, so that air in the bearing sleeve 2 is discharged along the gap, and the bearing sleeve 2 is conveniently inserted. And the bottom lip and the middle lip are matched with the bearing sleeve to form a closed sealing cavity. The upper lip plays a role in multi-layer sealing, so that the bearing sleeve and the cross shaft are sealed more effectively.
The above examples merely represent a few embodiments of the present utility model and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model, which are within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A sealing device, comprising: the inner sealing ring is characterized in that a sealing cover is arranged on one side of the inner sealing ring, the sealing ring comprises a sealing ring body, a middle lip is arranged on the sealing ring body, a bottom lip is arranged on the outer side of the bottom of the sealing ring body, and a groove is formed in the inner side of the bottom lip.
2. A sealing arrangement according to claim 1, wherein the inner seal ring is L-shaped in cross-section.
3. A sealing arrangement according to claim 1 or 2, wherein the seal ring body is inverted L-shaped.
4. A sealing arrangement according to claim 1 or 2, wherein an upper lip is provided above the middle lip.
5. The seal of claim 4 wherein said upper lip is an elastic upper lip, said middle lip is an elastic middle lip, and said lower lip is an elastic lower lip.
6. A sealing arrangement according to claim 1 or 2, wherein the mid-lip is arranged obliquely downwards.
7. A novel universal joint employing a sealing device as claimed in any one of claims 1 to 6, comprising: the four ends of the cross shaft are respectively provided with a bearing sleeve, and the bearing sleeves are internally provided with rolling needles.
8. The novel universal joint of claim 7, wherein the inner seal ring is located within the bearing housing.
9. The new gimbal according to claim 7, wherein the bottom lip is exposed outside the bearing housing.
10. The novel universal joint according to claim 7, 8 or 9, wherein a needle blocking ring is arranged between the inner sealing ring and the needle roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322035110.9U CN220452546U (en) | 2023-07-31 | 2023-07-31 | Sealing device and novel universal joint adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322035110.9U CN220452546U (en) | 2023-07-31 | 2023-07-31 | Sealing device and novel universal joint adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220452546U true CN220452546U (en) | 2024-02-06 |
Family
ID=89739989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322035110.9U Active CN220452546U (en) | 2023-07-31 | 2023-07-31 | Sealing device and novel universal joint adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220452546U (en) |
-
2023
- 2023-07-31 CN CN202322035110.9U patent/CN220452546U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |