CN207701611U - O-ring and bearing assembly - Google Patents
O-ring and bearing assembly Download PDFInfo
- Publication number
- CN207701611U CN207701611U CN201721574423.XU CN201721574423U CN207701611U CN 207701611 U CN207701611 U CN 207701611U CN 201721574423 U CN201721574423 U CN 201721574423U CN 207701611 U CN207701611 U CN 207701611U
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- China
- Prior art keywords
- main body
- ring
- radially
- central axis
- circumferential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 description 8
- 230000001788 irregular Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to an O type circle and bearing assembly. The O-ring comprises: a body having a circular ring shape and a central axis, the body including a radially inner surface facing the central axis of the body and a radially outer surface facing away from the central axis of the body; and a plurality of protrusions provided on at least a partial region of the radially inner surface of the main body and/or at least a partial region of the radially outer surface of the main body. The bearing assembly includes: an O-shaped ring; a housing having a cavity; and the bearing, it includes the outer lane, the outer lane has the central axis and has the radial surface who faces away from the central axis of outer lane, the bearing can hold in the cavity, and the radial surface of outer lane cooperatees with the internal surface of cavity, the radial surface of outer lane has seted up circumference recess, O type circle holds in circumference recess, the surface of O type circle leans on with the internal surface counterbalance of the bottom surface of circumference recess and cavity respectively, a plurality of bellyings of O type circle lean on with the bottom surface of circumference recess and/or the internal surface counterbalance of cavity.
Description
Technical field
The utility model is related to field of bearings, more particularly to O-ring and the bearing assembly including O-ring.
Background technology
Fig. 1 shows the partial sectional view of the bearing assembly of the motor of the prior art.As shown in Figure 1, bearing assembly 100 wraps
Include shell 110, bearing 120 and O-ring 130.Shell 110 has cavity 111.There is bearing 120 outer ring 121, inner ring (not to show
Go out) and the rolling element (not shown) that is arranged between outer ring 121 and inner ring.Bearing 120 is mounted in the cavity 111 of shell 110,
And clearance fit between the outer ring 121 and shell 110 of bearing 120.The rotary shaft of motor is inserted into inner ring, and interior
Circle can be rotated with the rotary shaft.The radially-outer surface 122 of outer ring 121 is provided with circumferential recess 123.O-ring 130 accommodates
In the circumferential recess 123, and the inner surface 112 with the bottom surface of circumferential recess 123 124 and cavity 111 leans respectively, with
Convenient for making to keep opposing stationary between outer ring 121 and shell 110 when the rotary shaft of motor rotates.
However, there is the bearing assembly 100 of O-ring according to prior art, when the rotary shaft high speed rotation of motor,
Relative motion is usually will produce between the outer ring 121 and shell 110 of bearing 120, that is, outer ring 121 rotates and shell 110 keeps quiet
Only.This to generate higher temperature and vibration in the motor, thus reduces the concentration of lubricating oil and shorten O-ring sealing element
Working life.
Accordingly, it is desirable to provide one kind ensuring close-fitting O-ring and bearing assembly between bearing and shell.
Utility model content
The purpose of this utility model is to provide one kind ensuring close-fitting O-ring between bearing and shell.This practicality
Novel another, which is designed to provide one kind, ensuring close-fitting bearing assembly between bearing and shell.
The one side of the utility model provides a kind of O-ring, and O-ring includes：Main body in annular shape and has center
Axis, main body include the radially-outer surface of the inner radial surface of the central axis of agent-oriention and the central axis backwards to main body；
With several lug bosses, it is arranged at least part region of the inner radial surface of main body and/or the radially-outer surface of main body
At least part region on.
Embodiment according to the present utility model, lug boss are configured to rib.
Embodiment according to the present utility model, several ribs include at least one circumferential rib and multiple side ribs, until
A few circumferential rib extends along the circumferencial direction of main body, and multiple side ribs prolong from circumferential rib to the lateral of main body
It stretches.
Embodiment according to the present utility model, at least one circumferential direction rib is relative to multiple side ribs closer to main body
The middle position of the radially-outer surface of inner radial surface and/or main body.
The cross section of embodiment according to the present utility model, main body is circle；Or the cross section of main body is rectangle, main body
Inner radial surface and the radially-outer surface of main body be respectively a cylindrical surface.
The both ends of embodiment according to the present utility model, rib extend to the lateral of main body respectively, and several ribs
Circumferencial direction arranged for interval of the item along main body.
Embodiment according to the present utility model, the cross section of main body are octagon, the inner radial surface of main body and main body
Radially-outer surface respectively includes two conical butt curved surfaces and a cylindrical surface, and two conical butt curved surfaces distinguish position
In the both sides of cylindrical surface.
The another aspect of the utility model provides a kind of bearing assembly comprising：It is O-shaped according to above example
Circle；Shell, with cavity；And bearing comprising outer ring, outer ring is with central axis and with the central shaft backwards to outer ring
The radially-outer surface of line, bearing can be contained in cavity, and the radially-outer surface of outer ring is matched with the inner surface of cavity,
The radially-outer surface of outer ring offers circumferential recess, wherein O-ring is contained in circumferential recess, the outer surface of O-ring respectively with
The bottom surface of circumferential recess and the contacted inner surfaces of cavity lean on, and several lug bosses of O-ring and the bottom surface of circumferential recess and/or
The contacted inner surfaces of cavity lean on.
Description of the drawings
Fig. 1 is the partial sectional view of the bearing assembly of the motor of the prior art.
Fig. 2 a are the partial sectional views for the bearing assembly for showing first embodiment according to the present utility model.
Fig. 2 b are that the broken section of the O-ring for the bearing assembly for showing first embodiment according to the present utility model is three-dimensional
Figure.
Fig. 3 a are the partial sectional views for the bearing assembly for showing second embodiment according to the present utility model.
Fig. 3 b are that the broken section of the O-ring for the bearing assembly for showing second embodiment according to the present utility model is three-dimensional
Figure.
Fig. 4 a are the partial sectional views for the bearing assembly for showing 3rd embodiment according to the present utility model.
Fig. 4 b are that the broken section of the O-ring for the bearing assembly for showing 3rd embodiment according to the present utility model is three-dimensional
Figure.
Specific implementation mode
Hereinafter, describing the illustrative embodiments of the utility model with reference to the accompanying drawings.It should be appreciated that these specific descriptions are only
For instructing how those skilled in the art implement the utility model, not for all feasible sides of exhaustive the utility model
Formula, the range being also not intended to limit the utility model.
<First embodiment>
Fig. 2 a are the partial sectional views of the bearing assembly 200 of first embodiment according to the present utility model.Cross in Fig. 2 a
Section is by the section of the plane interception gained of the radial direction of the bearing 220 along bearing assembly 200.In addition, although Fig. 2 a are only
Show a part for bearing assembly 200, but those skilled in the art according to content shown in the view and are described below, and answer
When it is conceivable that bearing assembly 200 overall construction.
Fig. 2 b are that the broken section of the O-ring 230 of the bearing assembly 200 of first embodiment according to the present utility model is three-dimensional
Figure.Cross section in Fig. 2 b is by the section of the plane interception gained of the radial direction along O-ring 230.In addition, although Fig. 2 b are only
Show a part for O-ring 230, but those skilled in the art according to content shown in the view and are described below, it should
It is conceivable that the overall construction of O-ring 230.
As shown in Figure 2 a, bearing assembly 200 includes shell 210, bearing 220 and O-ring 230.There is cavity in shell 210
211.In one example, shell 210 can be the shell of motor.
There is bearing 220 outer ring 221, inner ring (not shown) and the rolling element that is arranged between outer ring 221 and inner ring (not to show
Go out).Outer ring 221 has central axis, and with the radially-outer surface 222 backwards to the central axis.The diameter of outer ring 221 is outside
Surface 222 offers circumferential recess 223.In this embodiment, the quantity of circumferential recess 223 is two, and two circumferential directions are recessed
The shape of slot 223 is roughly the same.The cross section of circumferential recess 223 is rectangle.Bearing 220 can be contained in the cavity of shell 210
In 211, and 212 clearance fit of inner surface of the radially-outer surface 222 of outer ring 221 and cavity 211.Rotary shaft is inserted into
In inner ring, and inner ring can be rotated with rotary shaft.
O-ring 230 is made of the elastic material of such as rubber etc.O-ring 230 can be mounted on the circumferential direction of outer ring 221
In groove 223.When in circumferential recess 223, O-ring 230 is compressed, and the outer surface of O-ring 230 respectively with sky
The inner surface 212 of chamber 211 and the bottom surface 224 of circumferential recess 223 lean.In order to be clearly shown the specific structure of O-ring 230
It makes, state when O-ring 230 is uncompressed is shown in Fig. 2 a.
As shown in Figure 2 b, O-ring 230 includes main body 231 and several lug bosses 232.Main body 231 has in annular shape
There is central axis.The circular in cross-section (as shown in Figure 2 a) of main body 231.The outer surface of main body 231 includes towards the central shaft
The inner radial surface 233 of line and the backwards radially-outer surface 234 of the central axis.Several lug bosses 232 are arranged in main body 231
On at least part region of inner radial surface 233 and at least part region of the radially-outer surface 234 of main body 231.
Several lug bosses 232 are positioned so as in the inner radial surface 233 of main body 231 and radially-outer surface 234：Work as O
When type circle 230 is contained in circumferential recess 223, lean with the bottom surface 224 of circumferential recess 223 and the inner surface 212 of cavity 211
The outer surface of O-ring 230 be both provided with lug boss 232, so that it is guaranteed that being fitted close between shell 210 and outer ring 221.
From the viewpoint of shown in Fig. 2 a, lug boss 232 is arranged in the centre position of the inner radial surface 233 of main body 231
At (that is, bottom surface portions of the cross section of main body 231) and the middle position of the radially-outer surface 234 of main body 231 is (that is, main body
The top section of 231 cross section), rather than be arranged on all outer surfaces of main body 231.Therefore, it is possible to reduce manufacturing cost.
Several lug bosses 232 of O-ring 230 can respectively with the inner surface of the cavity of shell 210 211 212 and bearing 220
The bottom surface 224 of circumferential recess 223 lean so that for the O-ring 130 of smooth outer surface, increase O-ring
Frictional force between 230 and shell 210 and outer ring 221.It therefore, can be really when the inner ring of bearing 220 is with rotary shaft high speed rotation
It protects between bearing 220 and shell 210 and is fitted close so that keep opposing stationary between the two.
Lug boss 232 is configured to rib.The cross section of rib is, for example, rectangle.As shown in Figure 2 a, in the radial direction of main body 231
On outer surface 234, several lug bosses 232 include two circumferential ribs 235 and multiple side ribs 236.Two circumferential ribs 235
Along the circumferencial direction of main body 231 it is (as shown in Figure 2 b) extend, and multiple side ribs 236 from circumferential rib 235 to main body
231 lateral is (as shown in Figure 2 b) to be extended.
Embodiment according to the present utility model, each circumferential direction rib 235 is relative to multiple side ribs 236 closer to main body
The middle position of 231 radially-outer surface 234, and two 235 arranged for interval of circumferential rib.
Embodiment according to the present utility model, several side ribs 236 are from a circumferential rib 235 to main body 231
A lateral close to the circumferential direction rib 235 extends, and several side ribs 236 are from another circumferential rib 235
Extend to another lateral of main body 231.In addition, the multiple side ribs 236 extended to a lateral of main body 231
It is each perpendicular to this circumferential rib 235 to extend, and is equally spaced from arrangement.Prolong to another lateral of main body 231
The multiple side ribs 236 stretched are each perpendicular to another circumferential rib 235 and extend, and are equally spaced from arrangement.
Main body 231 has circumferential center line (as shown in Figure 2 b), and has across the circumferential direction center line and be parallel to master
The circumferential median plane of the central axis of body 231.Lug boss 232 in the inner radial surface 233 of main body 231 center with respect to the circumferential direction
Face is arranged symmetrically with the lug boss 232 on the radially-outer surface 234 of main body 231.Therefore the inner radial surface no longer to main body 231
Lug boss 232 on 233 is repeated.
<Second embodiment>
Fig. 3 a are the partial sectional views for the bearing assembly 300 for showing second embodiment according to the present utility model, and
Fig. 3 b are the partial cross-sectional perspective views of the O-ring 330 of the bearing assembly 300 of second embodiment according to the present utility model.Such as figure
Shown in 3a and Fig. 3 b, the bearing assembly 300 of second embodiment is roughly the same with the bearing assembly 100 of first embodiment, difference master
It is the construction of O-ring, therefore mainly O-ring is described below.
Second embodiment according to the present utility model, O-ring 330 include main body 331 and several lug bosses 332.Main body 331
In annular shape, and there is central axis.The cross section of main body 331 is rectangular.The outer surface of main body 331 includes towards the center
The inner radial surface 333 of axis, radially-outer surface 334 and two lateral outers 335 backwards to the central axis.It is radial
Inner surface 333 and radially-outer surface 334 are respectively the cylindrical surface of the central axis around main body 331.Several lug bosses 332
Be arranged in the inner radial surface 333 of main body 331 and the radially-outer surface 334 of main body 331 on.
In this embodiment, several lug bosses 332 in inner radial surface 333 and radially-outer surface 334 can respectively with
The bottom surface 324 of the circumferential recess 323 of the inner surface 312 of the cavity 311 of shell 310 and the radially-outer surface 322 of outer ring 321 offsets
It leans on so that for the O-ring 130 of smooth outer surface, increase rubbing between O-ring 330 and shell 310 and outer ring 321
Wipe power.Therefore, when the inner ring of bearing 320 is with rotary shaft high speed rotation, it can be ensured that close between bearing 320 and shell 310
Cooperation so that keep between the two opposing stationary.
Lug boss 332 is configured to rib.The cross section of rib is, for example, rectangle.As shown in Figure 3b, in the radial direction of main body 331
On outer surface 334, several lug bosses 332 include two circumferential ribs 336 and multiple side ribs 337.Two circumferential ribs 336
Along the circumferencial direction of main body 331 it is (as shown in Figure 3b) extend, and multiple side ribs 337 from circumferential rib 336 to main body
331 lateral is (as shown in Figure 3b) to be extended.
Embodiment according to the present utility model, each circumferential direction rib 336 is relative to multiple side ribs 337 closer to main body
The middle position of 331 radially-outer surface 334, and two 336 arranged for interval of circumferential rib.
Embodiment according to the present utility model, several side ribs 337 are from a circumferential rib 336 to main body 331
A lateral close to the circumferential direction rib 336 extends, and several side ribs 337 are from another circumferential rib 336
Extend to another lateral of main body 331.The multiple side ribs 337 extended to a lateral of main body 331 incline
Tiltedly extend in this circumferential rib 336.The multiple side ribs 337 extended to another lateral of main body 331 tilt
Extend in another circumferential rib 336.All these side ribs 337 are formed as being spaced apart along the circumferencial direction of main body 331
Multiple X-shapeds (middle section of the X-shaped is separated by circumferential rib 336), as shown in Figure 3b.
Main body 331 has circumferential center line (as shown in Figure 3b), and with across the circumferential direction center line and in being parallel to
The circumferential median plane of mandrel line.Lug boss 332 in the inner radial surface 333 of main body 331 median plane and main body with respect to the circumferential direction
Lug boss 332 on 331 radially-outer surface 334 is arranged symmetrically.Therefore no longer to convex in the inner radial surface 333 of main body 331
Portion 332 is played to be repeated.
<3rd embodiment>
Fig. 4 a are the partial sectional views for the bearing assembly 400 for showing 3rd embodiment according to the present utility model, and
Fig. 4 b are the partial cross-sectional perspective views of the O-ring 430 of the bearing assembly 400 of 3rd embodiment according to the present utility model.Such as figure
Shown in 4a and Fig. 4 b, the bearing assembly 400 of 3rd embodiment is roughly the same with the bearing assembly 100 of first embodiment, difference master
It is the construction of O-ring, therefore mainly O-ring is described below.
3rd embodiment according to the present utility model, O-ring 430 include main body 431 and several lug bosses 432.Main body 431
In annular shape, and there is central axis.The cross section of main body 431 is in octagon.The outer surface of main body 431 includes towards in this
The inner radial surface 433 of mandrel line, radially-outer surface 434 and two lateral outers 435 backwards to the central axis.Diameter
Inner surface 433 and radially-outer surface 434 respectively include two conical butt curved surfaces of the central axis around main body 431
434a, 434b and a cylindrical surface 434c, and two conical butt curved surfaces 434a, 434b are located at cylindrical surface
The both sides of 434c.Several lug bosses 432 are arranged in the inner radial surface 433 of main body 431 and the radially-outer surface of main body 431
On 434.
Several lug bosses 432 of O-ring 430 can respectively with the inner surface of the cavity of shell 410 411 412 and outer ring 421
The bottom surface 434 of circumferential recess 423 of radially-outer surface 422 lean so that relative to smooth outer surface O-ring 130 and
Speech increases the frictional force between O-ring 430 and shell 410 and outer ring 421.Therefore, when the inner ring of bearing 420 is with rotary shaft height
When speed rotation, it can ensure that and be fitted close between bearing 420 and shell 410 so that keep opposing stationary between the two.
Lug boss 432 is configured to rib.As shown in fig. 4 a, several ribs along the circumferencial direction of main body 431 (such as Fig. 4 b institutes
Show) arranged for interval, and the both ends of each rib are respectively along the extension (as shown in Figure 4 b) of the lateral of main body 431.
Embodiment according to the present utility model, several ribs form multiple ribs pair 436 spaced apart.Each rib pair
436 include two substantially v-shaped ribs, and the opening of the two v-shaped ribs is opposite, as shown in Figure 4 b.
Main body 431 has circumferential center line (as shown in Figure 4 b), and with across the circumferential direction center line and in being parallel to
The circumferential median plane of mandrel line.Lug boss 432 in the inner radial surface 433 of main body 431 median plane and main body with respect to the circumferential direction
Lug boss 432 on 431 radially-outer surface 434 is arranged symmetrically.Therefore no longer to convex in the inner radial surface 433 of main body 431
Portion 432 is played to be repeated.
<Other embodiment>
In the embodiment above, the embodiment that lug boss is configured to rib is described.As long as however, ensuring to increase O-ring
With the frictional force of the bottom surface of the inner surface and circumferential recess of cavity so that shell can be fitted close with bearing, and lug boss can be with
For any configuration.For example, lug boss can be structured as spot-like projections or irregular shape protrusion etc..
In three above embodiment, three kinds that several lug bosses are formed specific constructions are described.However, should manage
Solution, the construction that several lug bosses are formed are not limited to this.Several lug bosses can also be formed as other constructions, such as can be formed
For the construction similar with the decorative pattern of tire.
In the embodiment above, lug boss is described to be arranged in both the inner radial surface of main body and radially-outer surface.
However, the position of lug boss is not limited to this.Lug boss can be arranged main body inner radial surface and radially-outer surface one
On person.
In the embodiment above, the cross section for describing main body is round, rectangle and octagon.It will be appreciated, however, that main
The shape of body is not limited to this.Main body may be other shapes, such as can be pentagon, hexagon or irregular shape.
In the embodiment above, the cross section for describing the circumferential recess of the radially-outer surface of bearing is rectangular.However, all
It is not limited to this to the shape of groove.The cross section of circumferential recess may be other shapes, such as can be semicircle or not
Regular shape etc..
Although the utility model is only described with regard to certain exemplary embodiments, these description should only as example and
It is not construed as limiting.In the range of the appended claims are recorded, in the spirit and scope for not departing from the utility model,
What various change was equally possible.
Claims (8)
1. a kind of O-ring, which is characterized in that including：
Main body in annular shape and has central axis, and the main body includes that the diameter of the central axis towards the main body is inside
Surface and the backwards radially-outer surface of the central axis of the main body；With
Several lug bosses, are arranged at least part region of the inner radial surface of the main body and/or the main body
On at least part region of radially-outer surface.
2. O-ring according to claim 1, which is characterized in that
The lug boss is configured to rib.
3. O-ring according to claim 2, which is characterized in that
Several ribs include at least one circumferential rib and multiple side ribs, and at least one circumferential rib is described in
The circumferencial direction of main body extends, and multiple side ribs extend from the circumferential rib to the lateral of the main body.
4. O-ring according to claim 3, which is characterized in that
At least one circumferential rib relative to multiple side ribs closer to the inner radial surface of the main body and/or
The middle position of the radially-outer surface of the main body.
5. O-ring according to claim 3, which is characterized in that
The cross section of the main body is circle；Or
The cross section of the main body is rectangle, and the radially-outer surface of the inner radial surface of the main body and the main body is respectively one
A cylindrical surface.
6. O-ring according to claim 2, which is characterized in that
The both ends of the rib extend to the lateral of the main body respectively, and several ribs are along the circle of the main body
Circumferential direction arranged for interval.
7. O-ring according to claim 6, which is characterized in that
The cross section of the main body is octagon, and the radially-outer surface of the inner radial surface of the main body and the main body wraps respectively
Two conical butt curved surfaces and a cylindrical surface are included, two conical butt curved surfaces are located at one circle
The both sides of cylindrical curved surface.
8. a kind of bearing assembly, which is characterized in that including：
O-ring according to any one of claim 1 to 7；
Shell, with cavity；With
Bearing comprising outer ring, the outer ring is with central axis and with the radial direction of the central axis backwards to the outer ring
Outer surface, the bearing can be contained in the cavity, and the interior table of the radially-outer surface of the outer ring and the cavity
Face matches, and the radially-outer surface of the outer ring offers circumferential recess, wherein
The O-ring is contained in the circumferential recess, the outer surface of the O-ring respectively with the bottom surface of the circumferential recess and
The contacted inner surfaces of the cavity lean on, and the bottom surface of several lug bosses of the O-ring and the circumferential recess and/or described
The contacted inner surfaces of cavity lean on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721574423.XU CN207701611U (en) | 2017-11-22 | 2017-11-22 | O-ring and bearing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721574423.XU CN207701611U (en) | 2017-11-22 | 2017-11-22 | O-ring and bearing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701611U true CN207701611U (en) | 2018-08-07 |
Family
ID=63023321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721574423.XU Expired - Fee Related CN207701611U (en) | 2017-11-22 | 2017-11-22 | O-ring and bearing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701611U (en) |
-
2017
- 2017-11-22 CN CN201721574423.XU patent/CN207701611U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180807 Termination date: 20201122 |