CN203285858U

CN203285858U - Bearing sealing ring

Info

Publication number: CN203285858U
Application number: CN2013202901272U
Authority: CN
Inventors: 张玉辉; 赵峰宇
Original assignee: HUANCHI BEARING GROUP CO Ltd
Current assignee: HUANCHI BEARING GROUP CO Ltd
Priority date: 2013-05-13
Filing date: 2013-05-13
Publication date: 2013-11-13
Anticipated expiration: 2023-05-13

Abstract

A bearing sealing ring comprises a framework, and a sealing ring body cladding around the frame work, wherein the sealing ring body comprises a body cladding on the framework, and an outer lip and an inner lip arranged at both ends of the body, one side of the outer lip is provided with an inclined plane facing an outer bearing ring, the inner lip is downwardly extended with a contact lip outwardly inclined and projected and contacted with an inner bearing ring and with a non-contact lip not contacted with the inner bearing ring, and a buffer groove is formed between the non-contact lip and the contact lip. The bearing sealing ring is beneficial in that by using the above structure, not only can dustproof, waterproof, oil leakage prevention performances of the sealing ring be improved, but also friction torque of the sealing ring is reduced and a service life is prolonged; meanwhile, a sealing ring structure can be simplified, and thus a processing technology of the sealing ring is relatively simple and a production cost is reduced.

Description

A kind of bearing sealed ring

(1) technical field

The utility model relates to a kind of bearing part, relates in particular to a kind of bearing sealed ring of good sealing effect.

(2) background technique

Bearing sealed ring is the main obturator in bearing, not only lubricating grease is kept in bearing, prevents that again external foul from entering in bearing simultaneously, can effectively improve the working life of bearing.Along with development, the user is more and more higher to the quality requirement of bearing, not only requires bearing to have highi degree of accuracy, long lifetime, but also requires bearing to have low vibration, low noise, temperature rise, leak fat, dustproof property indices is good; Particularly in recent years, development and application along with super high speed electric instrument (more than 30000r/min), on some matched host machine, often because the properties of bearing sealed ring is not up to standard, the failure phenomenon in advance that cause that bearing temperature rise is too high, bearing grease leakage, extraneous dust and water enters the bearings such as bearing inside.And also there is following shortcoming in traditional seal ring:

1, under the operating mode of high rotating speed (more than 30000r/min), the performances such as dustproof, waterproof do not reach requirement;

2,, water-proof performance dustproof in order to pursue, deliberately add the magnitude of interference of big sealing ring and bearing dustproof groove, causes friction torque to increase, and bearing temperature rise is too high, also can accelerate the wearing and tearing of seal ring sealing lip;

3, most of seal rings adopt three lip seals, and complex structure has strengthened the manufacture difficulty of seal ring, and higher to the requirement on machining accuracy of bearing seal groove.

So traditional seal ring is carried out Optimal Structure Designing, the friction torque of dustproof, water-proof performance, reduction seal ring that improves seal ring is just imperative.

(3) summary of the invention

In order to overcome in prior art the bearing sealed ring that exists above-mentioned deficiency, the utility model that a kind of simple in structure, easy for installation, good sealing effect is provided.

The technical scheme in the invention for solving the technical problem is: a kind of bearing sealed ring, comprise skeleton and be coated on described skeleton sealing circle body on every side, described sealing circle body comprises outer lip and the epipharynx that is coated on the body on described skeleton and is located at these body two ends, one side of described outer lip is provided with an inclined-plane of meeting to bearing outer ring, described epipharynx is extended with an outward-dipping protrusion downwards and with bearing inner race is contacted, contacts lip and one and the discontiguous non-contact lip of bearing inner race, and this non-contact lip is formed with dashpot with described the contact between lip.

Further, the angle of the axis of the center line of described contact lip and described sealing circle body is 45～85 °, as preferentially, the angle of the axis of the center line of described contact lip and described sealing circle body is 75 °, contact is little, little and the temperature rise of friction torque is low, can remain good contacting with the sidewall of the seal groove of bearing inner race, thereby guarantee good dust and water protection effect.

Further, another side of described outer lip is provided with a groove, has when mounted regulating action, if when the magnitude of interference between bearing outer ring and outer lip was larger, groove was compressed, outer lip can move to groove direction, thereby is convenient to install; Simultaneously, groove can also be eliminated in when assembling firmly excessive, sealed ring deformation may occur and the disadvantage such as decentraction occur, makes sealing be in steady state.

Further, described skeleton is the L-type skeleton, thereby make seal ring not yielding, facilitate the installation of seal ring, better guarantee the assembling and positioning of seal ring, guarantee sealing effect, the lubricant medium that can be good at meeting lubrication system does not leak or seepage, thereby improved sealing effect and the life-span of seal ring, met usage requirement.

the utility model in use, the seal groove interference fit of outer lip and bearing outer ring, locate by elastic force axial and radial compression and bending elasticity distortion, firm position is reliable, the bottom that the contact lockjaw post-axis of epipharynx is held the seal groove of inner ring, the elastic force that relies on the bending deflection of contact lip to produce contacts sealing, to reach waterproof, dustproof effect, the non-contact lip of epipharynx does not contact with bearing inner race and is positioned at the outside that contacts lip, and the non-contact lip is formed with dashpot with contacting between lip, improved the structure of epipharynx, make the deliquescing of epipharynx root, increase pliability and the elasticity of epipharynx, reduced simultaneously the internal pressure that epipharynx bears, can prevent effectively that grease from leaking.Because a side of outer lip is provided with inclined-plane, this inclined-plane not only has leading role, thereby be convenient in seal groove that outer lip is installed to bearing outer ring, and improved the rigidity of seal ring and guaranteed the sealing of seal groove, can also reduce the area of contact of the seal groove of outer lip and bearing outer ring, the moment of reducing friction, reduce outer lip wearing and tearing, reduce temperature rise, increase the service life; Because the contact lip is obliquely installed, thereby make the contact between the seal groove of epipharynx and bearing inner race little, friction torque and temperature rise are lower, and the dashpot on epipharynx also plays the pressure buffer effect, and sealing Qu Lu is longer, has the dynamic pressure effect, can rebound after epipharynx wearing and tearing simultaneously, therefore function with " wear compensation ", contact lip and remain good contacting with the seal groove of bearing inner race, thus guaranteed seal ring good prevent dust, the advantage such as waterproof, friction torque are little.

The beneficial effects of the utility model are: adopt said structure, not only improved seal ring dustproof, waterproof, prevent the grease performance that leaks, and reduced the seal ring friction torque, extended working life; Simultaneously, simplify ring structure, made the seal ring processing technology simpler, reduced cost of production.

(4) description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is that the utility model is installed to the structural representation on bearing.

(5) embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

With reference to Fig. 1, Fig. 2, a kind of bearing sealed ring, comprise skeleton 1 and be coated on described skeleton 1 sealing circle body on every side, described sealing circle body comprises outer lip 3 and the epipharynx 4 that is coated on the body 2 on described skeleton 1 and is located at these body 2 two ends, one side of described outer lip 3 is provided with an inclined-plane 6 of meeting to bearing outer ring 5, described epipharynx 4 is extended with an outward-dipping protrusion downwards and with bearing inner race 7 is contacted, contacts lip 8 and one and the discontiguous non-contact lip 9 of bearing inner race 7, and this non-contact lip 9 is formed with dashpot 10 with described the contact between lip 8.

The angle a of the axis of the center line of described contact lip 8 and described sealing circle body is 45～85 °, as preferentially, the angle a of the axis of the center line of described contact lip 8 and described sealing circle body is 75 °, contact is little, friction torque is little and temperature rise is low, can remain good contacting with the sidewall of the seal groove 11 of bearing inner race 7, thereby guarantee good dust and water protection effect.

Another side of described outer lip 3 is provided with a groove 12, has when mounted regulating action, if when the magnitude of interference between bearing outer ring 5 and outer lip 3 was larger, groove 12 was compressed, outer lip 3 can move to groove 12 directions, thereby is convenient to install; Simultaneously, groove 12 can also be eliminated in when assembling firmly excessive, sealed ring deformation may occur and the disadvantage such as decentraction occur, makes sealing be in steady state.

Described skeleton 1 is the L-type skeleton, thereby make seal ring not yielding, facilitate the installation of seal ring, better guarantee the assembling and positioning of seal ring, guarantee sealing effect, the lubricant medium that can be good at meeting lubrication system does not leak or seepage, thereby sealing effect and the life-span of having improved seal ring meet usage requirement.

the utility model in use, seal groove 13 interference fit of outer lip 3 and bearing outer ring 5, locate by elastic force axial and radial compression and bending elasticity distortion, firm position is reliable, the contact lip 8 of epipharynx 4 is close to the bottom of the seal groove 11 of bearing inner race 7, the elastic force that relies on 8 bending deflections of contact lip to produce contacts sealing, to reach waterproof, dustproof effect, the non-contact lip 9 of epipharynx 4 does not contact with bearing inner race 7 and is positioned at the outside that contacts lip 8, and non-contact lip 9 is formed with dashpot 10 with contacting between lip 8, improved the structure of epipharynx 4, make epipharynx 4 root deliquescing, increase pliability and the elasticity of epipharynx 4, reduced simultaneously the internal pressure that epipharynx 4 bears, can prevent effectively that grease from leaking.Because a side of outer lip 3 is provided with inclined-plane 6, this inclined-plane 6 not only has leading role, thereby be convenient in seal groove 13 that outer lip 3 is installed to bearing outer ring 5, and improved the rigidity of seal ring and guaranteed the sealing of seal groove, can also reduce the area of contact of the seal groove 13 of outer lip 3 and bearing outer ring 5, the moment of reducing friction, reduce outer lip 3 wearing and tearing, reduce temperature rise, increase the service life; Because contact lip 8 is obliquely installed, thereby make the contact between the seal groove 11 of epipharynx 4 and bearing inner race 7 little, friction torque and temperature rise are lower, and the dashpot on epipharynx 4 10 also plays the pressure buffer effect, and Qu Lu is longer in sealing, has the dynamic pressure effect, can rebound after epipharynx 4 wearing and tearing simultaneously, function with " wear compensation ", therefore contact lip 9 and remain good contacting with the seal groove 11 of bearing inner race 7, thus guaranteed seal ring good prevent dust, the advantage such as waterproof, friction torque are little.

Claims

1. bearing sealed ring, comprise skeleton and be coated on described skeleton sealing circle body on every side, it is characterized in that: described sealing circle body comprises outer lip and the epipharynx that is coated on the body on described skeleton and is located at these body two ends, one side of described outer lip is provided with an inclined-plane of meeting to bearing outer ring, described epipharynx is extended with an outward-dipping protrusion downwards and with bearing inner race is contacted, contacts lip and one and the discontiguous non-contact lip of bearing inner race, and this non-contact lip is formed with dashpot with described the contact between lip.

2., according to bearing sealed ring claimed in claim 1, it is characterized in that: the angle of the axis of the center line of described contact lip and described sealing circle body is 45～85 °.

3., according to bearing sealed ring claimed in claim 2, it is characterized in that: the angle of the axis of the center line of described contact lip and described sealing circle body is 75 °.

4., according to the described bearing sealed ring of one of claim 1～3, it is characterized in that: another side of described outer lip is provided with a groove.

5., according to the described bearing sealed ring of one of claim 1～3, it is characterized in that: described skeleton is the L-type skeleton.