CN206439307U - A kind of sealing structure of linear ball bearing - Google Patents
A kind of sealing structure of linear ball bearing Download PDFInfo
- Publication number
- CN206439307U CN206439307U CN201720107687.8U CN201720107687U CN206439307U CN 206439307 U CN206439307 U CN 206439307U CN 201720107687 U CN201720107687 U CN 201720107687U CN 206439307 U CN206439307 U CN 206439307U
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- China
- Prior art keywords
- ring
- rubber
- base portion
- rubber base
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010888 cage effect Methods 0.000 description 1
- 230000003047 cage effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Sealing Of Bearings (AREA)
Abstract
The utility model is related to a kind of sealing structure of linear ball bearing, including bearing outer ring, the inner peripheral surface of bearing outer ring is provided with annular seal groove, annular seal groove is built with sealing ring, sealing ring includes rigid back-up ring and the rubber ring being fixed on rigid back-up ring, the rubber ring includes the rubber base portion and rubber seal lip combined with rigid back-up ring, rigid back-up ring is the radially split ring with cutout, the split ring is can be along cutout elasticity of compression deformation, the rubber base portion cross sectional shape is L-shaped, then rubber base portion has annular groove, split ring is located in the annular groove of rubber base portion, the rubber seal lip is located at the inner-diameter end of rubber base portion.With easy to assembly, the reliable advantage of structure.
Description
Technical field
The utility model is related to mechanical seal structure technical field, is specifically the sealing structure of linear ball bearing.
Background technology
Linear bearing is a kind of linear motion system, is used cooperatively for rectilinear path with cylinder axis.Traditional linear axis
Hold without sealing structure, it is designed only with back-up ring, as disclosed in China Patent No. is 01230683.5《It is a kind of new
Linear ball bearing》.To realize the preferable sealing property of linear bearing, rubber sealing structure is devised on linear bearing, as in
Disclosed in state's Patent No. 01265899.5《A kind of general linear bearing》, it adheres on traditional back-up ring with rubber seal
The rubber parts of lip, so that preferable sealing property is reached, but its design of Sealing Structure is unreasonable, the skeleton on its sealing ring（
Acted on for back-up ring）For overall ring-type, in the more difficult indentation sealing ring recess of sealing ring, to cause sealing ring to load the seal groove of outer ring
Interior easy, existing sealing ring, than shallower, there is the risk of lid with outer ring sealing ring matching allowance.
The content of the invention
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of easy to assembly, structure is reliable
Linear ball bearing sealing structure.
To achieve the above object, the utility model provides following technical scheme：
A kind of sealing structure of linear ball bearing, including bearing outer ring, the inner peripheral surface of bearing outer ring is provided with annular
Seal groove, annular seal groove is built with sealing ring, and sealing ring includes rigid back-up ring and the rubber ring being fixed on rigid back-up ring,
The rubber ring includes the rubber base portion and rubber seal lip combined with rigid back-up ring, it is characterised in that：Described rigidity gear
Enclose radially to have the split ring of cutout, the split ring is that can be cut along cutout elasticity of compression deformation, the rubber base portion
Face is shaped as L-shaped, then rubber base portion has annular groove, and split ring is located in the annular groove of rubber base portion, the rubber seal lip
Positioned at the inner-diameter end of rubber base portion.
By using above-mentioned technical proposal, sealing ring uses the opening ring design of elastically deformable, compressible in assembling
Rigid back-up ring realizes that sealed ring deformation reduces, so that facilitate sealing ring to load in annular seal groove, after loading, the rigidity of sealing ring
Back-up ring recovers, so as to reach reliable installation, it is ensured that sealing reliability, and the rubber ring of sealing ring uses the rubber base portion of L-shaped with opening
Choma is fixedly connected one, it is ensured that rubber ring and rigid back-up ring are firmly combined with reliably, and are kept off using rubber part and rigidity
Circle is pressed into annular seal groove simultaneously, it is ensured that sealing ring is solid and reliable and sealed reliable, and the design of rubber seal lip is protected
Demonstrate,prove sealed reliable.
It is preferred that, the rubber base portion has what is be filled at the cutout of split ring and flushed with split ring axial end
Fracture rubber filling portion.Improve the fastness that rubber ring is combined with rigid back-up ring, it is ensured that overall structure is firm.
It is preferred that, the rigid back-up ring is stamped with towards the raised convex closure of rubber base portion, the corresponding rubber vertically
Base portion has concave point corresponding with convex closure.Under the structure design, the fastness that rubber base portion is combined with rigid back-up ring is improved.
It is preferred that, the rubber seal lip is along outward-dipping extension.Under the structure design, the sealing of sealing lip is improved
Performance.
It is preferred that, the diameter of the root axially outer side of the rubber seal lip is inside more than the root axle of rubber seal lip
The diameter of side wall.Under the structure design, the root axially inner side wall of rubber seal lip is first attached with rubber base portion, then is caused
Rubber seal lip carries out more preferable elastic deformation, improves sealing property.
The utility model is further described below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the structural representation of the sealing structure of the utility model specific embodiment linear ball bearing；
Fig. 2 is the structural representation of the utility model specific embodiment sealing ring；
Fig. 3 is the Section View along Fig. 2 line A-A；
Fig. 4 is the structural representation of the rigid back-up ring of the utility model specific embodiment.
Embodiment
Referring to accompanying drawing 1 to accompanying drawing 4, a kind of sealing structure of linear ball bearing disclosed in the utility model, including bearing
Outer ring 1, the inner peripheral surface of bearing outer ring 1 is provided with annular seal groove 11, and annular seal groove 11 is built with sealing ring 2, sealing ring 2
Including rigid back-up ring 21 and the rubber ring 22 being fixed on rigid back-up ring 21, the rubber ring 22 includes and the rigid knot of back-up ring 21
The rubber base portion 221 and rubber seal lip 222 of conjunction, described rigid back-up ring 21 are the radially opening with cutout 211
Ring, the split ring is can be along the elasticity of compression deformation of cutout 211, and the cross sectional shape of rubber base portion 221 is L-shaped, then rubber-based
Portion 221 has annular groove 2211, and split ring is located in the annular groove 2211 of rubber base portion 221, split ring and the rubber base portion
221 outside diameter synchronous press mounting is in annular seal groove 2211, and the rubber seal lip 222 is located at the inner-diameter end of rubber base portion.
Sealing ring uses the opening ring design of elastically deformable, in assembling, and compressible rigid back-up ring realizes that sealed ring deformation reduces, from
And facilitating sealing ring to load in annular seal groove, after loading, the rigid back-up ring of sealing ring recovers, so as to reach reliable installation, protects
Sealing reliability is demonstrate,proved, the rubber ring of sealing ring is fixedly connected one using the rubber base portion of L-shaped with split ring, it is ensured that rubber
Circle and rigid back-up ring are firmly combined with reliably, and are pressed into simultaneously in annular seal groove using rubber part and rigid back-up ring, it is ensured that close
Seal is solid and reliable and sealed reliable, and the design of rubber seal lip ensures sealed reliable.
Have in the rubber base portion 221 and be filled at the cutout 211 of split ring and flushed with split ring axial end
Fracture rubber filling portion 2212.Fracture rubber filling portion ensures the globality of sealing ring, it is ensured that the support to bearing cage
Effect, while improving the fastness that rubber ring is combined with rigid back-up ring, it is ensured that overall structure is firm.
Ensure the reliability that rigid back-up ring and rubber base portion are combined, the rigid punching press vertically of back-up ring 21 to be further
Have towards the raised convex closure 212 of rubber base portion 221, the corresponding rubber base portion 221 has and the corresponding concave point of convex closure 212
2213.I.e. in rigid back-up ring and rubber base portion faying face formation male-female engagement, combined so as to improve rubber base portion with rigid back-up ring
Fastness.
To improve the sealing property of rubber seal lip, the rubber seal lip 222 is along outward-dipping extension.The rubber
The diameter of the root axially outer side 2221 of glue sealing lip 22 is more than the straight of the root axially inner side wall 2222 of rubber seal lip 22
Footpath.Rubber seal lip is inclined design, and the root axially inner side wall of rubber seal lip is first attached with rubber base portion, then caused
Rubber seal lip carries out more preferable elastic deformation, improves sealing property.
Claims (5)
1. a kind of sealing structure of linear ball bearing, including bearing outer ring, the inner peripheral surface of bearing outer ring are close provided with annular
Sealing groove, annular seal groove is built with sealing ring, and sealing ring includes rigid back-up ring and the rubber ring being fixed on rigid back-up ring, institute
State rubber base portion and rubber seal lip that rubber ring includes being combined with rigid back-up ring, it is characterised in that：Described rigid back-up ring
Radially to have the split ring of cutout, the split ring is can be along cutout elasticity of compression deformation, the rubber base portion section
L-shaped is shaped as, then rubber base portion has annular groove, split ring is located in the annular groove of rubber base portion, the rubber seal lip position
In the inner-diameter end of rubber base portion.
2. the sealing structure of linear ball bearing according to claim 1, it is characterised in that：The rubber base portion has filling
The fracture rubber filling portion flushed at the cutout of split ring and with split ring axial end.
3. the sealing structure of linear ball bearing according to claim 1 or claim 2, it is characterised in that：The rigid back-up ring is along axle
To the convex closure being stamped with towards rubber base portion projection, the corresponding rubber base portion has concave point corresponding with convex closure.
4. the sealing structure of linear ball bearing according to claim 1 or claim 2, it is characterised in that：The rubber seal lip is
Along outward-dipping extension.
5. the sealing structure of linear ball bearing according to claim 4, it is characterised in that：The root of the rubber seal lip
The diameter of axially outer side is more than the diameter of the root axially inner side wall of rubber seal lip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107687.8U CN206439307U (en) | 2017-02-04 | 2017-02-04 | A kind of sealing structure of linear ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107687.8U CN206439307U (en) | 2017-02-04 | 2017-02-04 | A kind of sealing structure of linear ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206439307U true CN206439307U (en) | 2017-08-25 |
Family
ID=59634140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720107687.8U Active CN206439307U (en) | 2017-02-04 | 2017-02-04 | A kind of sealing structure of linear ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206439307U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504184A (en) * | 2017-09-27 | 2017-12-22 | 常熟长城轴承有限公司 | A kind of seal of reinforcement structure design |
| CN107975540A (en) * | 2017-12-28 | 2018-05-01 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Wind power bearing sealing ring improved structure |
-
2017
- 2017-02-04 CN CN201720107687.8U patent/CN206439307U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504184A (en) * | 2017-09-27 | 2017-12-22 | 常熟长城轴承有限公司 | A kind of seal of reinforcement structure design |
| CN107975540A (en) * | 2017-12-28 | 2018-05-01 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Wind power bearing sealing ring improved structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 298 Fangjiashan Road, Huzhou City, Zhejiang Province Patentee after: Zhejiang Xinzi Precision Machinery Co.,Ltd. Patentee after: HUZHOU SANXING BEARING CO.,LTD. Address before: 298 Fangjiashan Road, Huzhou City, Zhejiang Province Patentee before: ZHEJIANG 8+1 PRECISION MACHINERY Co.,Ltd. Patentee before: HUZHOU SANXING BEARING CO.,LTD. |