CN109027014A - Sealing structure and bearing - Google Patents
Sealing structure and bearing Download PDFInfo
- Publication number
- CN109027014A CN109027014A CN201710438424.XA CN201710438424A CN109027014A CN 109027014 A CN109027014 A CN 109027014A CN 201710438424 A CN201710438424 A CN 201710438424A CN 109027014 A CN109027014 A CN 109027014A
- Authority
- CN
- China
- Prior art keywords
- skeleton
- ring
- sealing
- bearing
- oil scraper
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3216—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip supported in a direction parallel to the surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The present invention relates to field of sealing technology, relate more specifically to a kind of sealing structure and bearing.The sealing structure includes: oil scraper ring, is used to be fixed on the side in the outer ring and inner ring of bearing；Skeleton is configured in a manner of partly overlapping radially at interval in the axial direction with oil scraper ring, and skeleton is used for the another party being fixed in outer ring and inner ring；And sealing, it is attached to skeleton and the sealing lip including extending from skeleton radially toward a side.By using above-mentioned technical solution, sealing structure of the invention uses the double-layer structure formed by oil scraper ring and skeleton and sealing, the defect that the sealing effect of sealing structure caused by even being eliminated due to centrifugal force reduces can be alleviated in this way, to be always ensured that sealing structure has good sealing effect.
Description
Technical field
The present invention relates to field of sealing technology, relate more specifically to a kind of sealing structure and the bearing using the sealing structure.
Background technique
As shown in Figure 1a, existing clutch release bearing includes that outer ring 10, inner ring 20, ball 30, retainer 40, first are close
Seal structure 50 and second seals structure 60.
Outer ring 10 includes the outer ring axial component 101 that A extends generally along an axial and the axis from the outer ring axial component 101
The outer ring diameter extended along radial R towards radially inner side is held to side (left side in side, i.e. Fig. 1 a on axial A, similarly hereinafter)
To part 102.Inner ring 20 includes the inner ring axial component 201 that A extends generally along an axial and from the inner ring axial component 201
The inner ring radial component 202 that an axial side extends along radial R towards radially inner side.Inner ring radial component 202 and outer ring diameter
Parallel to each other to part 102, inner ring radial component 202 is located at leans on the axial other side (on axial A than outer ring radial component 102
The position other side, the right side i.e. in Fig. 1 a, similarly hereinafter), and the radially inner side end of inner ring radial component 202 is located at than outer ring diameter
The position of radially inner side is leaned on to the radially inner side end of part 102.Between outer ring axial component 101 and inner ring axial component 201
The raceway for being used for collection ball 30 is formed, retainer 40 is for ball 30 to be maintained in raceway.
First sealing structure 50 includes skeleton and sealing, and skeleton is made of rigid materials such as such as metals, sealing by
The elastic material of rubber etc. is made.Skeleton includes the skeleton axial component 501 that A extends generally along an axial and from skeleton axial part
The skeleton radial component 502 that points 501 another side of axial direction extends approximately along radial R towards radially inner side, skeleton axial part
Divide 501 to be fixed on the radial outer side of outer ring axial component 101 and sealing is attached to skeleton radial component 502.Sealing packet
Contact seal lip 503 and non-contacting seal lip 504 are included, while which extends towards radially inner side
Extend towards the axial other side, and the radially inner side end of contact seal lip 503 is abutted with inner ring axial component 201, this is non-
Extend while contact seal lip 504 extends towards radially inner side towards axial side.First sealing structure 50 is used for will
Grease positioned at its axial side is maintained at the inside of clutch release bearing and prevents the pollution for being located at its axial other side
Object enters the inside of clutch release bearing.
Second seals structure 60, which is formed section, to be had the substantially ring structure of zigzag and is fixed in inner ring radial direction
Part 202.Second seals structure 60 is pressed against the axial one side of inner ring radial component 202 for example, by the spring 70 of leaf spring,
To which second seals structure 60 is fixed on inner ring radial component 202.
In the actual application of clutch release bearing, the outer ring 10 of clutch release bearing with clutch together
Rotation, thus the first sealing structure 50 for being fixed on outer ring 10 is rotated also with outer ring 10.In this rotation process, such as Fig. 1 b
Shown, the contact seal lip 503 of first sealing structure 50 may be with inner ring axial part due to rotating the centrifugal force F generated
Divide 201 separation, cause to generate gap between contact seal lip 503 and inner ring axial component 201, so as to cause the first sealing knot
The sealing effect of structure 50 reduces.
Summary of the invention
Defect based on the above-mentioned prior art and be made that the present invention.The purpose of the present invention is to provide a kind of novel close
Seal structure and the bearing for using the sealing structure even are eliminated with alleviating since the centrifugal force of the high-speed rotation generation of bearing is led
The contact seal lip of the sealing structure of bearing is caused to be separated with the inner ring of bearing so that the sealing effect of sealing structure reduces
Defect.
In order to achieve the above-mentioned object of the invention, the present invention can adopt the following technical scheme that.
The present invention provides a kind of following sealing structures, and the sealing structure is integrally circular in configuration, the sealing knot
Structure includes: oil scraper ring, and the oil scraper ring is used for the side being fixed in the outer ring and inner ring of bearing；Skeleton, the skeleton and institute
It states oil scraper ring to configure at interval in the axial direction in a manner of partly overlapping radially, the skeleton is described outer for being fixed on
Another party in circle and the inner ring；And sealing, the sealing are attached to the skeleton and including existing from the skeleton
Axially towards the sealing lip extended to the party.
Preferably, the sealing lip includes contact seal lip, the contact seal lip from the skeleton radially
The direction far from the oil scraper ring is axially toward while extension towards the party to extend.
Preferably, the sealing lip further includes non-contacting seal lip, and the non-contacting seal lip exists from the skeleton
Extend axially towards being axially toward while extension to the party close to the direction of the oil scraper ring.
Preferably, the oil scraper ring includes approximately along the oil scraper ring radial component radially extended, and the skeleton includes big
The skeleton radial component radially extended is caused, the oil scraper ring radial component and the skeleton radial component are be overlapped radially
Part it is generally parallel to each other.
It is highly preferred that the oil scraper ring further includes the oil scraper ring axial component axially extended, the oil scraper ring is axial
Part is axially toward from the radially inner side end of the oil scraper ring radial component and/or radial outside end far from the skeleton
Direction extends.
The present invention also provides a kind of following bearings, and the bearing includes any one of above technical scheme technical side
Sealing structure described in case.
Preferably, the oil scraper ring is fixed on the axially extending outer race shaft approximately along bearing of the outer ring of the bearing
To the side in the axially extending inner ring axial component approximately along bearing of part and the inner ring of the bearing, the skeleton
The another party being fixed in the outer ring axial component and the inner ring axial component, the sealing lip of the sealing is from the bone
Frame extends radially toward the party in the outer ring axial component and the inner ring axial component, and the oil scraper ring exists
The position of the bearing being located axially at than the skeleton by the inside of the bearing.
It is highly preferred that the radially inner side face of the outer ring axial component includes the axial direction for extending to the outer ring axial component
The sloping portion of another side, the sloping portion is while another side of axial direction towards the outer ring axial component extends
Extend towards radial outside, the contact seal lip of the sealing is contacted with the sloping portion.
It is highly preferred that the shape of the sloping portion is straight line in the section of the longitudinal center line comprising the bearing
Shape.
Preferably, the bearing is clutch release bearing.
By using above-mentioned technical solution, sealing structure of the invention is used and is formed by oil scraper ring and skeleton and sealing
Double-layer structure, can alleviate in this way sealing structure caused by even being eliminated due to centrifugal force sealing effect reduce lack
It falls into, to be always ensured that sealing structure has good sealing effect.
Detailed description of the invention
Fig. 1 a is the schematic cross-sectional view of the structure of the clutch release bearing of the prior art；Fig. 1 b be in Fig. 1 a include the
The partial enlargement diagram of the part of one sealing structure.
Fig. 2 a be include that the section view of structure of clutch release bearing of sealing structure of one embodiment of the present invention is shown
It is intended to；Fig. 2 b is the partial enlargement diagram of the part including the first sealing structure in Fig. 2 a.
Description of symbols
10 outer ring, 101 outer ring axial component, 102 outer ring radial component, 20 inner ring, 201 inner ring axial component, 202 inner ring
The contact of 30 ball of radial component, 40 50 first sealing structure of retainer, 501 skeleton axial component, 502 skeleton radial component 503
504 non-contacting seal lip of formula sealing lip, 60 second seals structure, 70 spring
1 outer ring, 11 outer ring axial component, 111 sloping portion, 12 outer ring radial component, 2 inner ring, 21 inner ring axial component
22 inner ring radial component, 3 ball, 4 retainer 5 sealing structure (the first sealing structure) 51 oil scraper ring, 511 first oil scraper ring is axial
514 second oil scraper ring radial component 515 of part 512 second oil scraper ring axial component, 513 first oil scraper ring radial component
Three oil scraper ring radial components, 52 skeleton, 521 skeleton axial component, 522 first skeleton radial component, 523 second skeleton radial part
Divide 524 531 contact seal lip of third skeleton 53 sealing of radial component, 532 non-contacting seal lip 6 second sealing knot
7 spring of structure
A axial direction R radial direction F centrifugal force
Specific embodiment
Hereinafter with reference to the Figure of description specific embodiment that the present invention will be described in detail.In specific embodiment below
In, it is illustrated using the example of clutch release bearing as bearing of the invention.In addition, unless otherwise instructed, " axial direction " is
Refer to the axial direction (namely axial direction of cricoid sealing structure) of clutch release bearing, " axial side " refer to side on axial A,
Left side i.e. in Fig. 2 a and Fig. 2 b, " the axial other side " refer to the right side in the other side on axial A, i.e. Fig. 2 a and Fig. 2 b；" diameter
To " refer to the radial direction (namely radial direction of cricoid sealing structure) of clutch release bearing.
As shown in Figure 2 a, the clutch release bearing including the first sealing structure 5 as one embodiment of the present invention
Basic structure it is roughly the same with the basic structure of the clutch release bearing of the prior art.The difference of the two is the first sealing
The structure of structure is different with the structure of outer ring axial component.
Specifically, as shown in Figure 2 a, outer ring 1 includes the outer ring axial component 11 and outer from this that A extends generally along an axial
The outer ring radial component 12 that an axial side for circle axial component 11 extends along radial R towards radially inner side.Inner ring 2 includes big
Cause the axially inner ring axial component 21 of A extension and the axial side from the inner ring axial component 21 along radial R direction
The inner ring radial component 22 that radially inner side extends.Inner ring radial component 22 and outer ring radial component 12 are parallel to each other, and inner ring is radial
Part 22 is located at the position that the axial other side is leaned on than outer ring radial component 12, and the radially inner side end position of inner ring radial component 22
The position of radially inner side is leaned in the radially inner side end than outer ring radial component 12.Axial component 11 and inner ring axial component in outer ring
The raceway for being used for collection ball 3 is formed between 21, retainer 4 is for ball 3 to be maintained in raceway.Second seals structure 6 and spring 7
It is identical with the second seals structure 60 of the prior art and the structure of spring 70.
It will be detailed below the specific structure of the first sealing structure 5 according to an embodiment of the present invention.Specifically,
As shown in Figure 2 b, first sealing structure 5 is whole circular in configuration and including oil scraper ring 51, skeleton 52 and sealing 53.Gear
Oil ring 51 and skeleton 52 are made of the rigid material of such as metal etc., and sealing 53 is made of the elastic material of such as rubber etc..
Oil scraper ring 51 includes the first oil scraper ring axial component 511 and the second oil scraper ring axis that generally along an axial A extends
To part 512, the first oil scraper ring axial component 511 is located at the radial outside and first gear of the second oil scraper ring axial component 512
Oil ring axial component 511 is fixed on outer ring axial component 11.Oil scraper ring 51 further includes the first oil scraper ring axial component 511 of connection
The oil scraper ring radial component of axial another side and another side of axial direction of the second oil scraper ring axial component 512.The oil scraper ring diameter
Extend to part approximately along radial R and including another side of axial direction from the first oil scraper ring axial component 511 along radial R
Prolong towards the first oil scraper ring radial component 513 of radially inner side extension, from the first oil scraper ring radial component 513 towards radially inner side
The second oil scraper ring radial component 514 for extending while stretching towards the axial other side and from the second oil scraper ring radial component 514
The third oil scraper ring radial component 515 that radially inner side end extends along radial R towards radially inner side, third oil scraper ring radial component
515 radially inner side end is connected with another side of axial direction of the second oil scraper ring axial component 512.First oil scraper ring axial component
511 and second oil scraper ring axial component 512 be directed away from the direction of skeleton 52 on axial A from oil scraper ring radial component respectively and prolong
It stretches, i.e. towards axial side extension.In this way, the second oil scraper ring axial component 512 is formd with third oil scraper ring radial component 515
Towards axial side, i.e. towards the hook formation of Bearing inner.Since during clutch release bearing works, grease is logical
It can often move between the first oil scraper ring axial component 511 and the first oil scraper ring radial component 513 and be formed by corner positions, on
Stating hook formation can prevent the grease for moving to above-mentioned corner positions from flowing into oil scraper ring 51 and skeleton to radially inner side well
Between 52 and sealing 53, to prevent grease from leaking out from Bearing inner.
Skeleton 52 includes the skeleton axial component 521 that A extends generally along an axial and the axis from skeleton axial component 521
The skeleton radial component extended to another side approximately along radial R towards radial outside.Specifically, the skeleton radial part subpackage
Include the first skeleton radial component extended from another side of axial direction of skeleton axial component 521 along radial R towards radial outside
522, extend while extension from the radial outside end of the first skeleton radial component 522 towards radial outside towards axial side
Second skeleton radial component 523 and from the radial outside end of the second skeleton radial component 523 along radial R towards radial outside
The third skeleton radial component 524 of extension.
In the case that skeleton 52 and oil scraper ring 51 are both secured to clutch release bearing, skeleton radial component and oil scraper ring
Radial component partly overlaps on radial R, and lap between the two is generally parallel to each other.More specifically, in this embodiment party
In formula, a part of the first oil scraper ring radial component 513 is be overlapped on radial R with third skeleton radial component 524, second gear oil
A part and the second skeleton radial component 523 of ring radial component 514 and the first skeleton radial component 522 weight on radial R
Folded, third oil scraper ring radial component 515 and a part of the first skeleton radial component 522 are be overlapped on radial R.Wherein, first
Oil scraper ring radial component 513, third oil scraper ring radial component 515, the first skeleton radial component 522 and third skeleton radial component
524 each along radial R due to extending and parallel to each other, the second oil scraper ring radial component 514 and the second oil scraper ring radial component 523
It is parallel to each other.In addition, oil scraper ring radial component configures with being separated from each other on axial A with skeleton radial component, and make
The interval on axial A between each section of oil scraper ring radial component and each section of skeleton radial component is roughly equal.
Skeleton 52 is fixed on the radial outer side of inner ring axial component 21 and the axial direction of close inner ring axial component 21 is another
Side, oil scraper ring 51 are fixed on the radially inner side face of outer ring axial component 11 and are located at the position for leaning on axial side than skeleton 52.
Sealing 53 by vulcanization etc. modes be attached to skeleton radial component and including the diameter from skeleton radial component it is outside
Side connects towards radial outside extension, i.e. towards a contact seal lip 531 of the extension of outer ring axial component 11 and one are non-
Touch sealing lip 532.
The contact seal lip 531, which is located at, leans on the position of the axial other side than non-contacting seal lip 532 and from skeleton
The direction of oil scraper ring 51 is directed away from while radial component extends towards radial outside on axial A, i.e. towards axial another
Side extends, towards close on axial A while non-contacting seal lip 532 extends from skeleton radial component towards radial outside
The axial side of the direction of oil scraper ring 51, i.e. direction extends.Contact seal lip 531 relies on the elasticity and skeleton axial part of its own
11 radially inner side face is divided to abut, non-contacting seal lip 532 then has with the radially inner side face of skeleton axial component 11 small
Interval.
Oil scraper ring 51 is fixed on the outer ring 1 of clutch release bearing rotated together with clutch, and skeleton 52 is fixed on
The inner ring 2 of the fixation (not rotated with clutch) of clutch release bearing, and make the sealing 53 being arranged on skeleton 52
Contact seal lip 531 abutted from radially inner side with outer ring 1.In this way, having decreased or even eliminated since centrifugal force leads to Fig. 1 a
It disengages with the lip of contact seal in the prior art 503 in Fig. 1 b with inner ring axial component 201 so as to cause sealing structure
Sealing effect reduce defect.
Skeleton 52 and sealing 53 configure on axial A at interval with oil scraper ring 51, and oil scraper ring 51 is located at than skeleton 52
It is located at the position than skeleton 52 by the inside of clutch release bearing by the position of the axial other side, i.e. oil scraper ring 51.In addition, bone
Frame 52 is partly be overlapped on radial R with oil scraper ring 51.In this way, oil scraper ring 51 makes entire first with skeleton 52 and sealing 53
Sealing structure 5 has double-layer structure on axial A, which to be in different speed items in clutch release bearing
Stable sealing performance can be provided under part, to extend the service life of clutch release bearing.In addition, in oil scraper ring
Labyrinth structure is formd between 51 and skeleton 52 and sealing 53, which enhances the sealing effect of entire sealing structure
Fruit.
In addition, in order to further increase the function of preventing pollutant from entering in the course of work of clutch release bearing,
The radially inner side face of outer ring axial component 11 includes the sloping portion 111 obliquely extended relative to axial A, the sloping portion
The 111 another sides of axial direction for extending to outer ring axial component 11 towards radial outside from the installation site of oil scraper ring 51.Contact
Sealing lip 531 is abutted with the sloping portion 111.
In the present embodiment, in the section of the longitudinal center line comprising clutch release bearing, sloping portion 111
Shape is rectilinear form.
In this way, generated centrifugal force can make to move to outer ring axial component in the clutch release bearing course of work
The pollutant (even if the pollutant has already passed through rubber seal portion and enters Bearing inner) in 11 radially inner side face is along the inclination
Part 111 is towards the axial other side, the i.e. external discharge of clutch release bearing, so that further enhancing prevents pollutant from entering
The effect of Bearing inner.
Elaborate detailed technology scheme of the invention in a specific embodiment above, but it should be noted that:
Although 1. illustrated in above specific embodiment the first sealing structure 5 for clutch release bearing,
Obviously sealing structure (the first sealing structure) 5 of the invention can be not only used for clutch release bearing, can be also used for having
Other bearings of similar structures.
2. although above specific embodiment illustrates that sealing 53 is non-with a contact seal lip 531 and one
Contact seal lip 532, but the invention is not restricted to this.Sealing 53 can according to need the multiple contact seal lips of setting
531 and/or multiple non-contacting seal lips 532.
Although 3. above specific embodiment illustrate pass through clutch release bearing longitudinal center line and along
The shape of the sloping portion 111 in the radially inner side face of outer ring axial component 11 in the section of the radial R interception of clutch release bearing
Shape is rectilinear form, and but the invention is not restricted to this.The shape of sloping portion 111 can be curve shape in above-mentioned section.
4. although do not clearly stated in above specific embodiment, the oil scraper ring of sealing structure 5 of the invention
51 and skeleton 52 preferably by interference fit be respectively arranged in outer ring axial component 11 and inner ring axial part 21.
5. although illustrate the outer ring axial component 11 that oil scraper ring 51 is fixed on to bearing in above specific embodiment
And skeleton 52 is fixed on the inner ring axial component 21 of bearing, but the invention is not restricted to this.Oil scraper ring 51 can also be fixed on
The inner ring axial component 21 of bearing and the outer ring axial component 11 that skeleton 52 is fixed on to bearing.It still is able to alleviate so existing
Due to defect that centrifugal force makes the contact separation of contact seal lip that the sealing effect of sealing structure be caused to reduce in technology.
6. although above specific embodiment does not clearly state, but it is understood that sealing structure of the invention is opposite
It is less in the sealing structure change of the prior art, therefore be conducive to large-scale industrial production.
In addition, protection scope of the present invention is not limited to the specific embodiment of above-mentioned specific embodiment, as long as but can
The combination for meeting the technical characteristic of claim of the invention is just fallen within protection scope of the present invention.
Claims (10)
1. a kind of sealing structure, the sealing structure is integrally circular in configuration, which is characterized in that the sealing structure includes:
Oil scraper ring, the oil scraper ring are used for the side being fixed in the outer ring and inner ring of bearing；
Skeleton, the skeleton and the oil scraper ring are configured at interval in the axial direction in a manner of partly overlapping radially, institute
State the another party of skeleton for being fixed in the outer ring and the inner ring；And
Sealing, the sealing are attached to the skeleton and including extending radially toward the party from the skeleton
Sealing lip.
2. sealing structure according to claim 1, which is characterized in that the sealing lip includes contact seal lip, described
Contact seal lip is axially toward far from the gear oil while extension from the skeleton radially toward the party
The direction of ring extends.
3. sealing structure according to claim 2, which is characterized in that the sealing lip further includes non-contacting seal lip,
The non-contacting seal lip is axially toward while extension from the skeleton radially toward the party close to institute
The direction for stating oil scraper ring extends.
4. sealing structure according to claim 1, which is characterized in that the oil scraper ring includes approximately along radially extending
Oil scraper ring radial component, the skeleton include approximately along the skeleton radial component radially extended, the oil scraper ring radial component
Be overlapped part is generally parallel to each other radially with the skeleton radial component.
5. sealing structure according to claim 4, which is characterized in that the oil scraper ring further includes the gear axially extended
Oil ring axial component, radially inner side end and/or radial outside of the oil scraper ring axial component from the oil scraper ring radial component
End is axially toward the direction far from the skeleton and extends.
6. a kind of bearing, which is characterized in that the bearing includes sealing structure described in any one of claims 1 to 5.
7. bearing according to claim 6, which is characterized in that the oil scraper ring is fixed on the outer ring of the bearing substantially
Along the axially extending outer ring axial component and the bearing of bearing inner ring approximately along bearing it is axially extending in
The side in axial component is enclosed, the skeleton is fixed on another in the outer ring axial component and the inner ring axial component
Side, the sealing lip of the sealing is from the skeleton radially toward the outer ring axial component and the inner ring axial component
In the party extend, the oil scraper ring is in the inside of the bearing being located axially at than the skeleton by the bearing
Position.
8. bearing according to claim 7, which is characterized in that the radially inner side face of the outer ring axial component includes extending
To the sloping portion of another side of axial direction of the outer ring axial component, the sloping portion is towards the outer ring axial component
Another side of axial direction extend while extend towards radial outside, the contact seal lip and the rake of the sealing
Tap touching.
9. bearing according to claim 8, which is characterized in that in the section of the longitudinal center line comprising the bearing,
The shape of the sloping portion is linear.
10. bearing according to any one of claims 6 to 9, which is characterized in that the bearing is clutch release shaft
It holds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710438424.XA CN109027014A (en) | 2017-06-12 | 2017-06-12 | Sealing structure and bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710438424.XA CN109027014A (en) | 2017-06-12 | 2017-06-12 | Sealing structure and bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109027014A true CN109027014A (en) | 2018-12-18 |
Family
ID=64629100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710438424.XA Pending CN109027014A (en) | 2017-06-12 | 2017-06-12 | Sealing structure and bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN109027014A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681534A (en) * | 2018-12-30 | 2019-04-26 | 洛阳轴承研究所有限公司 | Oil-lubricated bearing |
-
2017
- 2017-06-12 CN CN201710438424.XA patent/CN109027014A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681534A (en) * | 2018-12-30 | 2019-04-26 | 洛阳轴承研究所有限公司 | Oil-lubricated bearing |
| CN109681534B (en) * | 2018-12-30 | 2021-01-22 | 洛阳轴承研究所有限公司 | Oil-lubricated bearing |
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Application publication date: 20181218 |