CN113653738A - Magnetic sealed impact-resistant hub bearing - Google Patents

Magnetic sealed impact-resistant hub bearing Download PDF

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Publication number
CN113653738A
CN113653738A CN202110847671.1A CN202110847671A CN113653738A CN 113653738 A CN113653738 A CN 113653738A CN 202110847671 A CN202110847671 A CN 202110847671A CN 113653738 A CN113653738 A CN 113653738A
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CN
China
Prior art keywords
ring
flange
sealing
section
contact
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Granted
Application number
CN202110847671.1A
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Chinese (zh)
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CN113653738B (en
Inventor
胡晟
胡世雄
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Shanghai C&U Group Co Ltd
C&U Co Ltd
Original Assignee
Shanghai C&U Group Co Ltd
C&U Co Ltd
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Priority to CN202110847671.1A priority Critical patent/CN113653738B/en
Publication of CN113653738A publication Critical patent/CN113653738A/en
Application granted granted Critical
Publication of CN113653738B publication Critical patent/CN113653738B/en
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0005—Hubs with ball bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0073—Hubs characterised by sealing means
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/527—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to vibration and noise
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
    • 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
    • F16C33/767—Sealings of ball or roller bearings integral with the race
    • 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
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
    • 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
    • F16C33/7816—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
    • F16C33/7826—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring
    • 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
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting 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
    • 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
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)

Abstract

The invention discloses a magnetic-seal impact-resistant hub bearing, which comprises a flange inner ring, a flange outer ring sleeved on the flange inner ring, a roller arranged between the flange inner ring and the flange outer ring, and a seal ring arranged between the flange inner ring and the flange outer ring, wherein one end of the flange inner ring is provided with a flange plate coaxial with the flange plate; the sealing ring comprises a framework, a sealing ring connected with the framework and a plurality of sealing lips arranged on the sealing ring; the joint of the flange inner ring and the flange plate is provided with the contact ring used for being matched with the sealing lip for sealing, the contact ring has magnetism and is matched with the framework to generate attraction, and when the framework and the contact ring attract each other, the sealing lip and the contact ring are attached to each other.

Description

Magnetic sealed impact-resistant hub bearing
Technical Field
The invention relates to the technical field of bearings, in particular to a magnetic-seal impact-resistant hub bearing.
Background
When a car passes through a concave pit or a convex pit on the road surface at high speed, the inner ring of the flange connected with the wheel bears impact force, and the impact force is transmitted to the steel ball component, so that the impact roller path forms an indent. The typical failure of the impact is that noise or vibration is generated when the automobile bearing runs, the driving experience of a customer is affected, and customer complaints are caused.
A common design solution is to increase the diameter or axial dimension of the bearing or the size or number of rolling elements of the bearing, which typically results in increased bearing mass and cost, and makes the bearing design less efficient in straight running and cornering capability. The shoulder height of the bearing raceway will also increase with the diameter of the ball, providing additional raceway support for the ball in extreme lateral force situations. However, this approach increases the cost of the process. All conventional improvements come at the cost of a substantial increase in bearing mass.
Therefore, how to improve the impact resistance effect without increasing a large amount of bearing mass is an important problem of improving the bearing performance. And how to improve and increase the utilization rate of the cost is also a problem to be considered.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a magnetic-seal impact-resistant hub bearing, which can improve the sealing property and the impact resistance effect by utilizing the magnetic effect.
In order to achieve the purpose, the invention provides the following technical scheme: a magnetic-seal impact-resistant hub bearing comprises a flange inner ring, a flange outer ring sleeved on the flange inner ring, a roller arranged between the flange inner ring and the flange outer ring, and a seal ring arranged between the flange inner ring and the flange outer ring, wherein one end of the flange inner ring is provided with a flange plate coaxial with the flange plate, the flange inner ring is provided with a roller path, the side edge of the roller path is provided with a flange, the roller is positioned in the roller path, a gap is formed between the flange plate and the flange outer ring, and the seal ring is positioned in the gap; the sealing ring comprises a framework, a sealing ring connected with the framework and a plurality of sealing lips arranged on the sealing ring; the junction of flange inner circle and ring flange is provided with one and is used for cooperating the sealed contact ring of seal lip, the contact ring has magnetism, and mutually supports with the skeleton and produces the attraction, and when skeleton and contact ring inter attraction, the seal lip laminates with the contact ring mutually.
As a further improvement of the invention, the sealing lip has therein iron powder which is attracted in cooperation with the contact ring.
As a further improvement of the invention, the contact ring comprises a first section attached to the surface of the flange plate, a second section attached to the surface of the flange inner ring, and a third section arranged between the first section and the second section, wherein the third section and the first section and the second section form an obtuse included angle; and a cavity is arranged between the third section of the contact ring and the inner ring of the flange, a magnetic part is arranged in the cavity, and the magnetic part generates attraction with the framework and/or the sealing lip.
As a further development of the invention, the magnetic properties of the contact ring are produced by the magnetic means.
As a further improvement of the invention, the cross section of the framework is L-shaped, one end of the framework is attached to the outer surface of the flange outer ring, the other end of the framework extends into a gap between the flange outer ring and the flange plate, and the part of the framework located in the gap covers the thickness of the end part of the flange outer ring corresponding to one end of the framework.
As a further improvement of the invention, a convex ring coaxial with the contact ring is arranged on the second section of the contact ring, a limiting groove is formed by the convex ring matched with the position where the second section is connected with the third section, an arc-shaped groove is arranged on one side of the sealing ring opposite to the limiting groove, a clamping ring matched with the limiting groove is arranged in the arc-shaped groove, and the sealing ring is clamped with the limiting groove in a matched manner through the clamping ring.
As a further improvement of the invention, the snap ring and the contact ring are attracted to each other.
As a further improvement of the invention, an end portion of one end of the framework, which extends into a gap between the flange outer ring and the flange disc, is bent towards the flange outer ring to form an annular groove into which the flange outer ring is inserted, and one side of the sealing ring, which is opposite to the flange outer ring, is positioned between the flange outer ring and the framework.
As a further improvement of the invention, one end of the sealing ring, which faces the limiting groove and corresponds to the third section of the contact ring, is an inclined surface which is attached to the third section; when the sealing ring is fixed in the limiting groove through the clamping ring, the inclined plane of one end, opposite to the limiting groove, of the sealing ring is attached to the third section.
As a further improvement of the invention, the other end of the second section of the contact ring, which is opposite to the third section, is close to the roller, and when the inner ring of the flange is impacted axially, the second section is matched with the flange of the raceway to limit the roller.
The invention has the beneficial effects that:
1. the sealing washer in this scheme is arranged in the clearance between flange outer lane and the flange dish, consequently can become the reduction of looks clearance size between this ring flange and the flange outer lane, and then reduces the requirement to flange height to the material cost that the sealing washer adopted is far less than the required material cost of increase flange height, also can improve the sealed effect in the scheme simultaneously.
2. The sealing ring is convenient to replace and maintain, the cost is low, if the flange plate and the flange outer ring directly impact, the damaged part needs to be directly replaced, and the cost is high. The sealing ring can also be used for buffering impact and has the effect of absorbing the impact.
3. Contact ring can protect the ring flange on the one hand, if contact ring damages after the impact, only need to be changed contact ring can, need not maintain the ring flange, on the other hand can protect the seal lip.
4. The contact ring has magnetism, can produce the cooperation with the skeleton, and then attracts the skeleton to be close to the contact ring, can let the seal lip tightly laminate on the contact ring, and then realizes better sealing.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
reference numerals: 1. an inner ring of the flange; 11. a flange plate; 12. a raceway; 13. blocking edges; 2. an outer ring of the flange; 3. a roller; 4. a seal ring; 41. a framework; 42. a seal ring; 421. an arc-shaped groove; 422. an inclined surface; 43. a sealing lip; 44. iron powder; 5. a contact ring; 51. a first stage; 52. a second stage; 521. a convex ring; 522. a limiting groove; 53. a third stage; 54. a cavity; 55. a magnetic member; 6. a snap ring; 7. an annular groove.
Detailed Description
The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.
As shown with reference to figures 1-2,
a magnetic sealing impact-resistant hub bearing comprises a flange inner ring 1, a flange outer ring 2 sleeved on the flange inner ring 1, rollers 3 arranged between the flange inner ring 1 and the flange outer ring 2, and a sealing ring 4 arranged between the flange inner ring 1 and the flange outer ring 2, wherein one end of the flange inner ring 1 is provided with a flange plate 11 which is coaxial with the flange inner ring 1, the flange inner ring 1 is provided with a roller path 12, the side edge of the roller path 12 is provided with a flange 13, the rollers 3 are positioned in the roller path 12, a gap is formed between the flange plate 11 and the flange outer ring 2, and the sealing ring 4 is positioned in the gap; the sealing ring 4 comprises a framework 41, a sealing ring 42 connected with the framework 41 and a plurality of sealing lips 43 arranged on the sealing ring 42; the connection part of the flange inner ring 1 and the flange plate 11 is provided with a contact ring 5 used for being matched with a sealing lip 43 for sealing, the contact ring 5 has magnetism and is matched with the framework 41 to generate attraction, and when the framework 41 and the contact ring 5 are mutually attracted, the sealing lip 43 is attached to the contact ring 5.
As shown in fig. 1, the assembled state is schematically illustrated, wherein the configurations of the flange inner ring 1, the flange outer ring 2, the rollers 3, the raceway 12, the seal ring 4, and the flange plate 11 are common technologies in hub bearings, and are not described herein in detail. Generally, a gap is reserved between the flange plate 11 and the flange outer ring 2 to avoid mutual collision, along with the increase of the gap, the requirement on the height of the flange 13 of the raceway 12 is higher, the height of the flange 13 needs to be matched with the diameter of the roller 3, and thus, the axial buffer can be sufficiently supported, the height of the flange 13 is increased by the traditional means, but along with the increase of the height of the flange 13, the material cost is greatly increased.
As shown in fig. 2, the sealing ring 4 in this solution is located in the gap, so that the size of the gap between the flange plate 11 and the flange outer ring 2 can be reduced in a phase-changing manner, and further, the requirement for the height of the rib 13 is reduced, and the material cost of the sealing ring 4 is far lower than the material cost required for increasing the height of the rib 13, and the sealing effect in this solution can also be improved.
The sealing ring 42 is convenient to replace and maintain, the cost is low, if the flange plate 11 and the flange outer ring 2 directly impact, the damaged part needs to be directly replaced, and the cost is high. The sealing ring 42 can also be used for buffering impact and has the effect of absorbing the impact, so the scheme can be embodied in the aspects of convenient maintenance, lower increased cost and improved impact resistance effect.
The contact ring 5 can protect the flange 11 on the one hand, and if the contact ring 5 is damaged after impact, only the contact ring 5 needs to be replaced without maintenance of the flange 11, and on the other hand, the sealing lip 43 can be protected.
In addition, the contact ring 5 has magnetism, and can cooperate with the framework 41 to attract the framework 41 to be close to the contact ring 5, so that the sealing lip 43 can be tightly attached to the contact ring 5, and better sealing is realized.
With the help of above-mentioned scheme, not only can let sealed effect obtain promoting by a wide margin, the effect of shocking resistance also obtains promoting by a wide margin moreover, and the cost of increase is also not high.
In the following, as another alternative embodiment, the sealing lip 43 has therein iron powder 44 which is attracted in cooperation with the contact ring 5. When the sealing ring 42 is manufactured, the iron powder 44 can be added at the same time for production, and the sealing lip 43 containing the iron powder 44 can be in closer fit with the contact ring 5, so that the sealing effect is further improved.
In addition, the contact ring 5 comprises a first section 51 attached to the surface of the flange plate 11, a second section 52 attached to the surface of the flange inner ring 1, and a third section 53 arranged between the first section 51 and the second section 52, wherein the third section 53 and the first section 51 and the second section 52 form obtuse included angles; between the third section 53 of the contact ring 5 and the flange inner ring 1, a cavity 54 is provided, in which cavity 54 a magnetic element 55 is arranged, which magnetic element 55 generates attraction with the framework 41 and/or the sealing lip 43.
Wherein contact ring 5 divides into the three-section, and first section 51 is used for protecting ring flange 11, and second section 52 is used for laminating flange inner circle 1's surface, provides the fixed action, and third section 53 is used for supporting and connects other two sections, also can conveniently cooperate seal lip 43 to seal more simultaneously, reduces the required length of seal lip 43, just also can reduce the material, and the seal lip 43 that length shortens simultaneously possesses tighter contact effect, can let sealed effect better.
In addition, by means of the structural characteristics of the third section 53 which is in contact with the flange inner ring 1, a cavity 54 can be formed in front of the flange inner ring 1, and the magnetic material is directly arranged in the cavity 54, so that the framework 41 and the sealing lip 43 can be attracted, a stronger attraction effect is realized, and the magnetic component 55 can be protected.
In order to save costs, the magnetic properties of the contact ring 5 are produced by means of magnetic means 55. Based on this design, the contact ring 5 can be directly made of a non-magnetic material, such as iron or steel, and the magnetic member 55 can generate magnetism, and further cooperate with the seal lip 43 and the frame 41 to attract, and further, based on this scheme, the specific gravity of the magnetic member 55 can be reduced, because the above-mentioned material can generate a magnetic effect in a certain area by means of the magnetic member 55, that is, the magnetic effect of one point can be expanded to one surface, and a large-area magnetic attraction effect can be realized by the magnetic members 55 in a plurality of points, that is, the coverage area of the magnetic member 55 can be reduced, and the magnetic member 55 does not need to be spread over the whole contact ring 5, and the above magnetic member 55 can adopt a strong magnetic magnet and can be fixed in the above-mentioned cavity 54 by means of clamping, sticking, interference fit, and the like.
In order to further improve the stability of the impact resistance effect, the cross section of the framework 41 is in an L shape, one end of the framework is attached to the outer surface of the flange outer ring 2, the other end of the framework extends into the gap between the flange outer ring 2 and the flange plate 11, and the end part of the framework 41, which is located in the gap, covers the thickness of the end part of the flange outer ring 2 corresponding to one end of the framework 41. The part of the framework 41 extending into the gap between the flange outer ring 2 and the flange 11 is inserted into the sealing ring 42, one surface of one side matched with the flange outer ring 2 is exposed outside, the other surface of the other side is attached to the sealing ring 42, and the sealing ring 42 between the framework 41 and the flange outer ring 2 is attached to the surface of the flange outer ring 2 through the framework 41.
The L-shaped framework 41 can enable one end of the L-shaped framework to be attached to the outer surface of the flange outer ring 2, has a better fixing effect, and can improve the sealing effect and the buffering effect by fastening the contact between the sealing ring 42 and the flange outer ring 2. The other end covers the thickness of flange outer lane 2, can keep apart contact ring 5 and flange outer lane 2 completely, avoids having direct impact between the two, therefore skeleton 41 cooperation contact ring 5 also can ensure the isolation effect of contact ring 5 and flange outer lane 2, when producing the impact between the two, can utilize contact ring 5 and skeleton 41 to absorb, utilizes sealing ring 42 to cushion simultaneously and absorbs the impact.
In addition, in order to improve the sealing effect, a protruding ring 521 coaxial with the contact ring 5 is arranged on the second section 52 of the contact ring 5, a limiting groove 522 is formed by the position matching protruding ring 521 at which the second section 52 is connected with the third section 53, an arc-shaped groove 421 is formed in one side of the sealing ring 42 opposite to the limiting groove 522, a clamping ring 6 matched with the limiting groove 522 is arranged in the arc-shaped groove 421, and the sealing ring 42 is matched and clamped with the limiting groove 522 through the clamping ring 6. The other end of the second section 52 of the contact ring 5, which is opposite to the third section 53, is close to the roller 3, and when the flange inner ring 1 is impacted axially, the second section 52 cooperates with the rib 13 of the raceway 12 to limit the roller 3.
The design of bulge loop 521 can regard as the strengthening rib on the one hand, strengthen the intensity of second section 52, on the other hand can constitute spacing groove 522, cooperation snap ring 6 carries out spacingly and fastens sealing ring 42, make sealing ring 42's assembly leakproofness better, the design of arc recess 421 can laminate snap ring 6 more in addition, let snap ring 6 and arc recess 421's contact surface bigger, fixed effect is better, simultaneously with the help of snap ring 6's fastening effect and sealing ring 42's flexibility, can reach very good sealed effect. In addition, the tip of second section 52 still cooperates with flange 13 of raceway 12, that is to say, the thickness of second section 52 can increase the height of flange 13, and then supports roller 3, can further alleviate the requirement of the clearance that exists between flange outer lane 2 and the ring flange 11 to flange 13 height, consequently can increase flange 13 height through the thickness of second section 52 when providing sealed effect, and then let the shock resistance effect better, axial support effect is better.
Based on the above, it is also preferable that the snap ring 6 and the contact ring 5 are attracted to each other. The snap ring 6 is made of a material that can be engaged with the magnetic contact ring 5, and at this time, the two can be attracted to each other, thereby improving the stability of the operation.
In addition, the end of the skeleton 41 that extends into the gap between the flange outer ring 2 and the flange 11 is bent toward the flange outer ring 2 to form an annular groove into which the flange outer ring 2 is inserted, and one side of the sealing ring 42 opposite to the flange outer ring 2 is located between the flange outer ring 2 and the skeleton 41.
Through the bending of the flange outer ring 2, a space for the deformation of the sealing lip 43 can be formed, when the flange outer ring 2 and the flange plate 11 generate impact, the space formed by bending can be utilized to protect the sealing lip 43, and the sealing lip 43 is prevented from being rolled and damaged under the impact action. And skeleton 41 after buckling can form annular groove towards one side of flange outer lane 2, and flange outer lane 2 inserts in this annular groove, can improve the installation stability of sealing ring 42 and skeleton 41, has certain limiting displacement simultaneously, also can let the buffering effect better, and the sealing ring 42 that has more areas cooperates with flange outer lane 2.
Further, one end of the sealing ring 42 facing the limiting groove 522 and the side corresponding to the third section 53 of the contact ring 5 form an inclined surface 422 attached to the third section 53; when the sealing ring 42 is fixed in the limit groove 522 by the snap ring 6, the inclined surface of the end of the sealing ring 42 opposite to the limit groove 522 is attached to the third section 53.
Under the effect of this kind of laminating, can improve sealed effect by a wide margin, of course, the area of laminating needs to be controlled, and specific area size can be adjusted according to actual need according to technical personnel in the art, does not belong to the improvement content of this scheme, consequently does not do too much and describe repeatedly. With the help of the cooperation of snap ring 6 and spacing groove 522, can let inclined plane 422 cooperate with the third section 53 that the contact was traded simultaneously, with the help of the fastening of snap ring 6, give inclined plane 422 with this fastening, can let sealed effect obtain promoting by a wide margin.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. A magnetic sealed impact-resistant hub bearing comprises a flange inner ring, a flange outer ring sleeved on the flange inner ring, a roller arranged between the flange inner ring and the flange outer ring, and a sealing ring arranged between the flange inner ring and the flange outer ring, wherein one end of the flange inner ring is provided with a flange plate coaxial with the flange plate, the flange inner ring is provided with a roller path, the side edge of the roller path is provided with a flange, the roller is positioned in the roller path,
a gap is formed between the flange plate and the flange outer ring, and the sealing ring is positioned in the gap;
the sealing ring comprises a framework, a sealing ring connected with the framework and a plurality of sealing lips arranged on the sealing ring;
a contact ring used for being matched with the sealing lip for sealing is arranged at the joint of the flange inner ring and the flange plate,
the contact ring has magnetism, and mutually supports with the skeleton and produces the attraction, and when skeleton and contact ring inter attraction, sealing lip and contact ring laminated mutually.
2. The magnetically sealed, impact resistant hub bearing of claim 1, wherein said sealing lip has ferrous powder therein that is cooperatively attracted to the contact ring.
3. The magnetically sealed, impact resistant hub bearing of claim 2 wherein said contact ring includes a first section abutting the surface of the flange, a second section abutting the surface of the flange inner race, and a third section disposed between the first and second sections, the third section being at an obtuse included angle with respect to both the first and second sections; and a cavity is arranged between the third section of the contact ring and the inner ring of the flange, a magnetic part is arranged in the cavity, and the magnetic part generates attraction with the framework and/or the sealing lip.
4. The magnetically-sealed, impact-resistant hub bearing of claim 3, wherein the magnetic properties of said contact ring are generated by said magnetic component.
5. The magnetically sealed impact resistant hub bearing of claim 1, 2, 3 or 4, wherein the cross-section of the cage is L-shaped, and one end of the cage is attached to the outer surface of the flange outer ring, and the other end of the cage extends into the gap between the flange outer ring and the flange, and the portion of the cage located in the gap covers the thickness of the end of the flange outer ring corresponding to the one end of the cage.
6. The magnetically-sealed impact-resistant hub bearing according to claim 5, wherein the second section of the contact ring is provided with a protruding ring coaxial with the contact ring, the protruding ring is matched at the position where the second section is connected with the third section to form a limiting groove, one side of the sealing ring opposite to the limiting groove is provided with an arc-shaped groove, a clamping ring matched with the limiting groove is arranged in the arc-shaped groove, and the sealing ring is clamped with the limiting groove in a matched manner through the clamping ring.
7. The magnetically-sealed, impact-resistant hub bearing of claim 6, wherein said snap ring and contact ring create an attractive interaction therebetween.
8. The magnetically-sealed, impact-resistant hub bearing of claim 7, wherein the end of the skeleton that extends into the gap between the flange outer ring and the flange plate is further bent towards the flange outer ring to form an annular groove into which the flange outer ring is inserted, and the side of the seal ring opposite to the flange outer ring is located between the flange outer ring and the skeleton.
9. The magnetically-sealed impact-resistant hub bearing of claim 8, wherein the sealing ring faces one end of the retaining groove and has an inclined surface that is attached to the third section on a side corresponding to the third section of the contact ring; when the sealing ring is fixed in the limiting groove through the clamping ring, the inclined plane of one end, opposite to the limiting groove, of the sealing ring is attached to the third section.
10. The magnetically-sealed, impact-resistant hub bearing of claim 9, wherein the second segment of the contact ring is positioned adjacent the roller relative to the other end of the third segment, the second segment cooperating with the rib of the raceway to restrain the roller when the inner race of the flange is axially impacted.
CN202110847671.1A 2021-07-26 2021-07-26 Magnetic sealing anti-impact hub bearing Active CN113653738B (en)

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