CN202560836U - Bearing sealing structure - Google Patents
Bearing sealing structure Download PDFInfo
- Publication number
- CN202560836U CN202560836U CN2012200667628U CN201220066762U CN202560836U CN 202560836 U CN202560836 U CN 202560836U CN 2012200667628 U CN2012200667628 U CN 2012200667628U CN 201220066762 U CN201220066762 U CN 201220066762U CN 202560836 U CN202560836 U CN 202560836U
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- China
- Prior art keywords
- bearing
- lip
- sealing
- epipharynx
- interlabium
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Abstract
The utility model relates to a bearing component, in particular to a bearing sealing structure. The bearing sealing structure comprises a sealing part body, an outer sealing lip edge which contacts an outer ring blocking groove is arranged at one end of the sealing part body, and an inner sealing lip edge which contacts an inner ring blocking groove is arranged at the other end of the sealing part body. The inner sealing lip edge comprises an inner lip, a middle lip and an outer lip, wherein the inner lip, the middle lip and the outer lip intersect on a junction part, the thickness of the free end of the middle lip is bigger than the thickness of a connecting section, and the connecting section is connected with the junction part. The distance between the free end of the inner lip and the junction part is no less than the distance between the free end of the middle lip and the free end of the inner lip. By means of the bearing sealing structure, lubricating grease in a bearing chamber can be prevented from overflowing, lubricating oil in a box body can be effectively prevented from entering the bearing chamber, the sealing property of the sealing part body when a bearing is in operation is greatly improved, and the service life of the bearing is prolonged; and the technical problems that in the prior art, the sealing effect of the bearing is not ideal, contacting and sealing parts are not stable, and oil and grease are prone to overflow are solved.
Description
Technical field
The utility model relates to a kind of bearing components, relates in particular to a kind of sealing configuration that utilizes the lip limit that bearing is sealed.
Background technique
Bearing is a mechanical sector application important foundation part very widely.No matter be aircraft, automobile, boats and ships, lathe, or household electric appliance, IT machine etc., every place that rotation is arranged all be unable to do without bearing.Bearing seal mainly plays the effect of sealing as the important component part of bearing, prevents that the bearing internal grease from leaking and the entering of foreign, the usability of keeping and prolonging bearing.The seal arrangement of existing waterproof sealing bearing; The general labyrinth seal structure that adopts discloses a kind of seal arrangement of deep groove ball bearing like Chinese patent 92221530.8, and a protruding circle is arranged on the sealing circle inner periphery; One groove is arranged in the seal ring; Seal ring inner periphery upper convex ring is close on the external diameter of bearing inner race, and tightly insert in the peripheral groove of bearing the seal ring outer periphery, and promptly seal ring has only a contact lip limit that contacts with inner ring.The bearing that adopts single lip limit seal arrangement is as the used for electric engine of cleaner bearing of doing wet dual-purpose; Because vacuum cleaner often contacts with detergent, especially adopt sodium sulfate etc. to be diluted to strong acid-base and make detergent with water, cause the used for electric engine of cleaner bearing perishable; Sealability reduces; Waterproofing effect is poor, and the bearing internal grease is leaked, and bearing life is 40-50 hours working life only.Also has Chinese patent: " a kind of deep groove ball bearing is with three lip formula contact seal parts (CN2929313Y) "; Comprise inner ring, periphery, ball, retainer; The sealing caulking groove is arranged on the two ends of periphery, be embedded with seal ring at the sealing caulking groove, there is the lip of three stretching, extensions the lower edge of seal ring; On the inner ring between the lip in the outside and the middle lip, seal groove is arranged; The middle lip and the seal groove flanked of inner ring are touched, and be gapped between inboard lip and the inner ring, gapped between the lip in the outside and the inner ring.Because epipharynx is too short, lubricating grease is easy to flow in epipharynx and the cavity that middle lip becomes, has reduced the lubrication of lubricating grease to bearing; Also increased the excessive risk of lubricating grease, the seal groove side of the middle interlabium of Sealing and inner ring is adjacent to the generation slide relative when the bearing high speed rotating, because frictional heating; Expand in the lip limit; Magnitude of interference strengthens, and has quickened the aging of lip limit, causes the aggravation of bearing race and worn steel ball and inefficacy in advance.
Summary of the invention
The utility model has mainly provided a kind of good sealing effect; Can prevent that the lubricating grease in the bearing chamber is excessive; Effectively stop the lubricant oil in the casing to be invaded in the bearing chamber, improve the sealability of bearing Sealing when work greatly, the bearing seal structure that has prolonged bearing working life; Solve the existing in prior technology bearing sealing effect undesirable, the contact seal position is unstable, the technical problem that grease overflows easily.
The above-mentioned technical problem of the utility model solves through following technical proposals: a kind of bearing seal structure; Comprise seal body; End in seal body is provided with the outer seal lip limit that contacts with the outer ring draw-in groove; The other end of seal body is provided with the interior sealing lip limit that contacts with the inner ring draw-in groove, it is characterized in that: the sealing lip limit comprises epipharynx, middle interlabium and outer lip in described, and epipharynx, middle interlabium and outer lip intersect in the connecting part; The free-ended thickness of interlabium is greater than the thickness of linkage section in described, and linkage section links to each other with the connecting part; The free end of epipharynx is not less than middle interlabium free end to the free-ended distance of epipharynx to the distance of connecting part.Belong to Spielpassung between the baffle plate cylindrical of the bottom surface of epipharynx and inner ring, form first cavity between epipharynx and the middle interlabium, middle interlabium and outer lip form second cavity, and outer lip and seal body form the 3rd cavity.Seal body is that flexible material is processed, and can adopt NBR to make with fine rubber material.The free end of epipharynx and middle interlabium is positioned at same plane, and epipharynx, middle interlabium and outer lip are given a place mutually, extends three sealing lips by the intersection to three directions.The bottom surface of epipharynx is parallel with the interior edge face of inner ring, belongs to Spielpassung between the rib cylindrical of epipharynx and inner ring, so lubricating grease is easy to flow to first cavity; In original structure, epipharynx is generally shorter, and three lip intersections are thicker; With epipharynx length lengthening, bearing is when high speed rotating now, and the direction along the epipharynx bottom surface that lubricating grease receives rotating force outwards flies; The passage that the lengthening of epipharynx length makes lubricating grease leak extends, and the lubricating grease that flows to the inner ring rib cylindrical simultaneously is back in the bearing race, reduces the accumulation of lubricating grease at first cavity; The pressure of centering interlabium obviously reduces, and forms the appearance alicyclic ring between interior, middle lip, improves its anti-leak performance.And the thickness of middle interlabium and free end joint root reduces, simultaneously in the middle of the thickening of procheilon portion, interlabium is more soft in making; In the bearing operation process; Reduced the wearing and tearing on middle interlabium limit, simultaneously also very high its leakage prevention capability has also reduced the friction torque of middle interlabium simultaneously.
As preferably, described in the free-ended thickness of interlabium greater than the thickness of connecting part, the thickness of connecting part is greater than the free end thickness of outer lip.The free end of middle interlabium is connected on the end face of inner ring, and stressed realization sealing is when the intermediate section free end is stressed; Because the thickness of connecting part is less than free-ended thickness, the middle interlabium of Sealing can be more soft, stressed littler; Thereby reduce wearing and tearing, and the thickness of connecting part is greater than the free end thickness of outer lip, when when work, in the casing bigger pressure being arranged; The free end thickness of outer lip is little; Stressed easy centering interlabium produces axial pressure, and interlabium and seal groove contacts side surfaces is tightr in making, improves the sealability of Sealing.
As preferably, described in the thickness-tapered of linkage section of interlabium, be provided with angle between the free end of middle interlabium and the linkage section, angle is the obtuse angle.In the thickness of interlabium by the joint to successively decreasing gradually with the free end connecting part of middle interlabium, thereby the free-ended pressure of centering interlabium is little, when bearing operation, reduces the frictional force of centering interlabium, the wearing and tearing of interlabium in the reduction improve bearing working life.
As preferably, the folded acute angle of described outer lip and horizontal plane is 160 ° ~ 175 °.With outer lip to pressing close to horizontal plane as far as possible; Increased the angle of outer lip and horizontal plane, when when work, in the casing bigger pressure being arranged, the increase of angle can guarantee that interlabium produces axial pressure in the outer bound pair Sealing; Interlabium and seal groove contacts side surfaces is tightr in making; Improve the sealability of Sealing, improve the service behaviour of bearing greatly, prolong the working life of bearing.
As preferably, described in the free-ended bottom surface of interlabium parallel with the bottom surface of epipharynx, a wherein side of epipharynx is vertical with the bottom surface, the another side of epipharynx and bottom surface angle are acute angle.In the free end of interlabium be similar to one trapezoidal, uprush to free end thickness by the linkage section of middle interlabium, the angle of the interior edge face of the linkage section of middle interlabium and epipharynx one side is less than the exterior edge face of linkage section and the angle between the another side.
As preferably, be flexible seals in seal body, in seal body, be enclosed with rigid support.In main body rigid support is set, improves sealability, rigid support can adopt the SPCC material.
Therefore; A kind of bearing seal structure of the utility model possesses following advantage: at first, with epipharynx length lengthening, the passage that makes lubricating grease leak extends; Can prevent that the lubricating grease in the bearing chamber is excessive; Effectively stop the lubricant oil in the casing to be invaded in the bearing chamber simultaneously, reduce the accumulation of lubricating grease in first cavity, the pressure of centering interlabium obviously reduces; Secondly the thickness of interlabium root reduces in, procheilon portion thickening in the middle of the while, and interlabium is more soft in making; In the bearing operation process; Reduced the wearing and tearing on middle interlabium limit, simultaneously also very high its leakage prevention capability has also reduced the friction torque of middle interlabium simultaneously; Improve the sealability of bearing Sealing when work greatly, thereby prolonged the working life of bearing; Increased the angle of outer lip and horizontal plane once more; When work, in the casing bigger pressure being arranged; The increase of angle can guarantee that interlabium produces axial pressure in the outer bound pair Sealing, and interlabium and seal groove contacts side surfaces is tightr in making, improves the sealability of Sealing; Improve the service behaviour of bearing greatly, prolong the working life of bearing.
Description of drawings
Fig. 1 is the scheme of installation of a kind of bearing seal structure of the utility model.
Fig. 2 is an A place enlarged view in Fig. 1.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of model utility.
Embodiment:
As illustrated in fig. 1 and 2; A kind of bearing seal structure comprises seal body, at the flexible seals 1 of seal body for employing NBR material manufacture; In seal body, be enclosed with the rigid support 2 of " L " shape of adopting the SPCC manufacturing, the horizontal segment of rigid support 2 is positioned at bearing outer ring 3 places.The outer seal lip limit 4 that contacts with the draw-in groove 6 of outer ring 3 arranged in that an end of flexible seals 1 is one-body molded, the other end of flexible seals 1 is one-body molded to have the interior sealing lip limit 5 that contacts with the draw-in groove 6 of inner ring 7.Rigid support 2 is positioned at flexible seals 1, and the outer lip limit 4 of compressing sealing element main body flexible seals 1, the outer lip limit 4 of flexible seals 1 resiliently deformables take place closely contact with bearing outer ring 3 draw-in grooves, it is stuck in can not rotates in the groove and can not come off.Interior sealing lip 5 limits are positioned at the draw-in groove 6 of inner ring, belong to Spielpassung between the rib cylindrical of interior sealing lip limit 5 and inner ring 7.Interior sealing lip limit 5 comprises epipharynx 8, middle interlabium 9 and outer lip 10; Epipharynx 8, middle interlabium 9 and outer lip 10 intersect in the connecting part 11; Form first cavity 12 between epipharynx 8 and the middle interlabium 9, middle interlabium 9 forms second cavity 13 with outer lip 10, and outer lip 10 forms the 3rd cavity 14 with flexible seals 1.Middle interlabium 9 is between epipharynx 8 and outer lip 10; The free end 15 of middle interlabium 9 is similar trapezoidal; In the free end 15 of interlabium 9 be connected to inner ring 7 draw-in groove in; The thickness of free end 15 is greater than linkage section 16 thickness of middle interlabium, and the thickness of the linkage section 16 of middle interlabium is successively decreased to free end 15 directions by junction 11.Epipharynx 8 is triangular in shape; The bottom surface of epipharynx 8 is parallel with the interior edge face of inner ring 7, and the length of epipharynx 8 bottom surfaces equates perhaps big slightly with the free end 15 of middle interlabium to the distance between epipharynx 8 bottom surfaces, with the bottom surface length growth of epipharynx 8; Increased first cavity 12; Also increase the passage length that lubricating grease leaks, thereby can prevent that the lubricating grease in the bearing chamber is excessive, effectively stoped the lubricant oil in the casing to be invaded in the bearing chamber simultaneously; Reduce the accumulation of lubricating grease in first cavity 12, the pressure of centering interlabium 9 obviously reduces.The thickness of the free end 15 of middle interlabium is greater than the thickness of connecting part 12, and the thickness of connecting part 12 is greater than free end 16 thickness of outer lip.Outer lip 10 is 170 ° with the folded acute angle of horizontal plane.
The utility model is through the lengthening to epipharynx length; In interlabium and the epipharynx segment thickness that offsets strengthen, and the main body of the middle interlabium less thick of linkage section just, the angle change of outer lip and horizontal plane greatly; Prevented that the lubricating grease in the bearing chamber is excessive; Effectively stop the lubricant oil in the casing to be invaded in the bearing chamber, improve the sealability of bearing Sealing when work, prolonged the working life of bearing.
Specific embodiment described herein only is that the design to the utility model illustrates.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Claims (8)
1. bearing seal structure; Comprise seal body, be provided with the outer seal lip limit that contacts with the outer ring draw-in groove at an end of seal body, the other end of seal body is provided with the interior sealing lip limit that contacts with the inner ring draw-in groove; It is characterized in that: the sealing lip limit comprises epipharynx, middle interlabium and outer lip in described; Epipharynx, middle interlabium and outer lip intersect in the connecting part, and the free-ended thickness of described middle interlabium is greater than the thickness of linkage section, and linkage section links to each other with the connecting part; The free end of epipharynx is not less than middle interlabium free end to the free-ended distance of epipharynx to the distance of connecting part.
2. a kind of bearing seal structure according to claim 1 is characterized in that: the free-ended thickness of interlabium is greater than the thickness of connecting part in described, and the thickness of connecting part is greater than the free end thickness of outer lip.
3. a kind of bearing seal structure according to claim 1 and 2 is characterized in that: the thickness-tapered of the linkage section of interlabium in described, be provided with angle between the free end of middle interlabium and the linkage section, and angle is the obtuse angle.
4. a kind of bearing seal structure according to claim 1 and 2 is characterized in that: the folded acute angle of described outer lip and horizontal plane is 160 ° ~ 175 °.
5. a kind of bearing seal structure according to claim 3 is characterized in that: the folded acute angle of described outer lip and horizontal plane is 160 ° ~ 175 °.
6. a kind of bearing seal structure according to claim 1 and 2 is characterized in that: the free-ended bottom surface of interlabium is parallel with the bottom surface of epipharynx in described, and a wherein side of epipharynx is vertical with the bottom surface, and the another side of epipharynx and bottom surface angle are acute angle.
7. a kind of bearing seal structure according to claim 5 is characterized in that: the free-ended bottom surface of interlabium is parallel with the bottom surface of epipharynx in described, and a wherein side of epipharynx is vertical with the bottom surface, and the another side of epipharynx and bottom surface angle are acute angle.
8. a kind of bearing seal structure according to claim 1 and 2 is characterized in that: in seal body is flexible seals, in seal body, is enclosed with rigid support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200667628U CN202560836U (en) | 2012-02-28 | 2012-02-28 | Bearing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200667628U CN202560836U (en) | 2012-02-28 | 2012-02-28 | Bearing sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560836U true CN202560836U (en) | 2012-11-28 |
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ID=47210496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200667628U Expired - Lifetime CN202560836U (en) | 2012-02-28 | 2012-02-28 | Bearing sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560836U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104870973A (en) * | 2012-12-26 | 2015-08-26 | 文塔纳医疗系统公司 | Specimen processing systems and methods for holding slides |
| US10746752B2 (en) | 2009-11-13 | 2020-08-18 | Ventana Medical Systems, Inc. | Opposables and automated specimen processing systems with opposables |
| US11274998B2 (en) | 2012-12-26 | 2022-03-15 | Ventana Medical Systems, Inc. | Specimen processing systems and methods for holding slides |
-
2012
- 2012-02-28 CN CN2012200667628U patent/CN202560836U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10746752B2 (en) | 2009-11-13 | 2020-08-18 | Ventana Medical Systems, Inc. | Opposables and automated specimen processing systems with opposables |
| CN104870973A (en) * | 2012-12-26 | 2015-08-26 | 文塔纳医疗系统公司 | Specimen processing systems and methods for holding slides |
| US11274998B2 (en) | 2012-12-26 | 2022-03-15 | Ventana Medical Systems, Inc. | Specimen processing systems and methods for holding slides |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |