CN202812211U - Oil seal used by rotating shaft of heavy duty vehicle - Google Patents
Oil seal used by rotating shaft of heavy duty vehicle Download PDFInfo
- Publication number
- CN202812211U CN202812211U CN2012205347147U CN201220534714U CN202812211U CN 202812211 U CN202812211 U CN 202812211U CN 2012205347147 U CN2012205347147 U CN 2012205347147U CN 201220534714 U CN201220534714 U CN 201220534714U CN 202812211 U CN202812211 U CN 202812211U
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- lip
- fpm
- rubber
- spring
- metal frame
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model provides an oil seal used by a rotating shaft of a heavy duty vehicle. The oil seal used by the rotating shaft of the heavy duty vehicle comprises a metallic framework used for vulcanization, a plurality of FPM rubber lips are vulcanized by the metallic framework used for vulcanization through FPM fluororubber, the plurality of FPM rubber lips comprise a first assistant lip, a second assistant lip and a master lip, wherein lithium grease is evenly painted among the first assistant lip, the second assistant lip and the master lip, and a rubber boss is arranged at the lower side of the first assistant lip; a spring groove is arranged behind the master lip of the FPM rubber, and a spring is arranged in the spring groove; the metallic framework pressed on the plane at the tail end of the spring groove is in the oil seal; a plurality of small round holes are arranged in the periphery of the metallic framework. Due to the fact that the plurality of FPM rubber lips are vulcanized by the metallic framework used for vulcanization, the function of seal is performed; in order to be adapted to an environment full of sand and dust, the FPM fluororubber with good abrasive resistance is adopted for rubber materials, requirements of temperature and oils are completely met, and problems that the eccentricity of a rotating oil seat is big, the abrasive resistance of the materials is poor, oil leakage occurs in defects of a mould pressing lip, a spring drops when assembled existing in the heavy duty vehicle are solved.
Description
Technical field
The utility model relates to the auto parts and components of general vehicle technical field, specifically heavy goods vehicles running shaft oil sealing.
Background technique
Heavy goods vehicles is extensive use, the problem that its running shaft exists at present with oil sealing: 1, the heavy goods vehicles rotary shaft oil seal is harsher than other vehicle oil sealing working condition, and axle is beated, seat off-centre is more greatly 0.3mm, adopts at present the standard oil seal structure to satisfy the demands; 2, external condition is abominable, and dust, silt easily enter sealing surface, can aggravate the rubber lip wearing and tearing.
Adopt at present a main lip, secondary bead structures of ACM lactoprene materials more, though this glue can satisfy serviceability temperature and oil product requirement (30～150 ℃ of serviceability temperatures, anti-anti-hypoid gear oil), but because of its wear resistance poor than other rubber, lip is easy to wear after the running, a large amount of silts can enter sealing surface and aggravate the wearing and tearing of sealing lip, cause seal failure.
The oil seal lip molding mode adopts the molded sharp-pointed lip of vulcanizing mold more, and the defectives such as this molding mode easily occurs choking with resentment at the oil seal lip place, breach affect oil sealing sealing, and the somatotype overlap is and manual eliminates the low and appearance poor of efficient; After the oil sealing assembling, axle oppositely passes to secondary lip from main lip, if adopt conventional oil seal structure, risk easily comes off during the assembling of product spring.
Summary of the invention
The utility model for solve the heavy goods vehicles rotary oil seal eccentric large, material wear ability is poor, the spring risk that the comes off when leakage of oil of mold pressing lip defective, assembling, a kind of heavy goods vehicles running shaft of ad hoc meter oil sealing.
The technical solution of the utility model is for this reason, a kind of heavy goods vehicles running shaft oil sealing, comprise the sulfuration metal frame, sulfuration has the FPM rubber lip with metal frame by the sulfuration of FPM fluorine glue, it is characterized in that: the FPM rubber lip is a plurality of, comprise the first secondary lip, the second secondary lip and main lip, the first secondary lip and axle interference are 0.1～0.6mm, and uniform 8 equal portions rubber boss on the first secondary lip; The gap of the second secondary lip and axle is 0.1～0.6 mm; Main lip and axle interference 1.4～2.0 mm; And between the first secondary lip, the second secondary lip, main lip, all evenly scribble lithium base oil fat.
Improvement to such scheme is: be provided with spring groove behind at FPM rubber master lip, and be provided with spring in spring groove; What spring groove tail end plane place was press-fitted that a gear spring uses is press-fitted metal frame in oil sealing; The metal frame circle designs that is press-fitted that the gear spring is used has a plurality of small sircle holes.
Improvement to such scheme is: mold pressing is evenly equipped with the dextrorotation oil drive back thread between the second secondary lip, main lip.
Improvement to such scheme is: described spring is φ 0.3 * φ 2.0, the long 4.0～4.8mm of its waist, the thick 1.0～1.2mm of waist.
Improvement to such scheme is: be provided with 6～8 equal portions rubber tongues in sulfuration with the metal frame inboard, make keep off that spring uses be press-fitted metal frame external diameter and equal portions rubber tongue tight joint.
Beneficial effect:
The utility model plays the effect of sealing because sulfuration has a plurality of FPM rubber lip with the metal frame sulfuration; For adapting to silt dirt ash Environmental Conditions, rubber material adopts preferably FPM fluorine glue of wear resistance, and fully can adaptive temperature and oil product requirement.
The sealing of a plurality of FPM rubber lip is so that better effects if; The place has one to be press-fitted metal frame in oil sealing on spring groove tail end plane, prevents that spring from coming off; The gear spring has a plurality of small sircle holes with being press-fitted the metal frame circle designs, is beneficial to heat radiation.
The first secondary lip and axle interference 0.1～0.6mm, and uniform 8 equal portions rubber boss on the first secondary lip can reduce this pair lip and be coupling tactile area, are easy to heat radiation, avoid forming after the lip interference vacuum and cause the cavity oil pressure excessive and oil product leaks, and can effectively stop silt to enter main lip and sealing surface; The gap design of the first secondary lip and the second secondary lip and axle is 0.1～0.6 mm, and the second secondary lip and shaft clearance are less behind the sleeve, can stop that silt enters; After the first secondary lip lip wearing and tearing, part silt can accumulate between the first secondary lip, the second secondary labial groove groove temporarily; Main lip and axle interference 1.4～2.0 mm stop oil product to leak outside; All evenly scribble lithium base oil grease lubrication between the first secondary lip, the second secondary lip, main lip, reduce the dry friction of each rubber lip and between centers, lubricate has reduced the wearing and tearing of lip and between centers, increases the service life.
Described spring is φ 0.3 * φ 2.0, long 4.0～the 4.8mm of its waist, thick 1.0～the 1.2mm of waist, the tubbiness spring Novel oil seal structure that has a large waist, the anti-larger axis of this new structure oil sealing is beated, eccentric ability is stronger, waist is therefore torsional deformation not, and bulky spring constantly provides the larger radial force of 14-26N for oil sealing, and it is strong to adapt to the large eccentricity ability.
The full dextrorotation oil drive back thread of the uniform part of lip mold pressing of two secondary lips and a main lip can increase pump oil effect, and the oil pump that returns air side is sucked back oily side, and it is better that this oil drive back thread returns oily effect, and sealability is excellent.
In order to guarantee to keep off spring with being press-fitted the metal frame close-fitting, be designed with 6～8 equal portions rubber tongues in vulcanizate skeleton inboard, make to be press-fitted metal frame external diameter and equal portions rubber tongue interference close-fitting.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the utility model E is to worm's eye view.
Fig. 3 is F section enlarged diagram among Fig. 2.
Fig. 4 is oil drive back thread schematic representation among Fig. 1.
Fig. 5 is that the middle A-A of Fig. 4 is to the oil drive back thread cross-sectional schematic.
Fig. 6 is the product schematic representation that untouched edge is cut main lip in the utility model.
Fig. 7 is the worm's eye view of Fig. 6.
Fig. 8 is the enlarged diagram of H section among Fig. 7.
1 is that metal frame is used in sulfuration among the figure, the 2nd, FPM fluorine glue, and the 3rd, the gear spring is with being press-fitted metal frame, the 4th, spring, 5 is first secondary lips, the 6th, and the rubber boss, 7 is second secondary lips, the 8th, lithium base oil fat, the 9th, dextrorotation oil drive back thread, the 10th, main lip, the uniform aperture of 11 skeletons, 12 inboard rubber tongues, 13 do not cut main lip and overlap.
Embodiment
The utility model is shown in Fig. 1 ~ 5.
A kind of heavy goods vehicles running shaft oil sealing, comprise sulfuration metal frame 1, sulfuration has the FPM rubber lip with metal frame 1 by 2 sulfurations of FPM fluorine glue, the FPM rubber lip is a plurality of, comprise two secondary lips and a main lip, the first secondary lip 5 is 0.1～0.6mm with the axle interference, and uniform 8 equal portions rubber boss 6 on the first secondary lip 5; The second secondary lip 7 is 0.1～0.6 mm with the gap of axle; Main lip 10 and axle interference 1.4～2.0 mm; And all evenly scribble lithium base oil fat 8 at the first secondary lip 5, the second secondary lip 7,10 of main lips.
Be provided with spring groove behind at FPM rubber master lip 10, and in spring groove, be provided with spring 4; Place, spring groove tail end plane has been press-fitted a gear spring and has used metal frame 3 in oil sealing; The gear spring has a plurality of small sircle holes with metal frame 3 circle designs.
The first secondary lip 5, the second secondary lip 7, the place's mold pressing of main lip 10 air angles have dextrorotation oil drive back thread 9.
Be provided with 6～8 equal portions rubber tongues in sulfuration with metal frame 1 inboard, make gear play spring metal frame 3 external diameters and equal portions rubber tongue interference fit.
Shown in Fig. 6 ~ 8, in actual production process, untouched edge master lip and overlap 13 are behind the full rubber of sulfuration mold pressing, become sharp-pointed main lip 10 with the machine cut method, the lip defective that this place, sharp-pointed lip dead angle that has just avoided mold pressing to form causes, cut the lip while and excise somatotype place overlap, enhance productivity.
Claims (5)
1. heavy goods vehicles running shaft oil sealing, comprise the sulfuration metal frame, sulfuration has the FPM rubber lip with metal frame by the sulfuration of FPM fluorine glue, it is characterized in that: the FPM rubber lip is a plurality of, comprise the first secondary lip, the second secondary lip and main lip, the first secondary lip and axle interference are 0.1～0.6mm, and uniform 8 equal portions rubber boss on the first secondary lip; The gap of the first secondary lip and the second secondary lip and axle is 0.1～0.6 mm; Main lip and axle interference 1.4～2.0 mm; And between the first secondary lip, the second secondary lip, main lip, all evenly scribble lithium base oil fat.
2. a kind of heavy goods vehicles running shaft oil sealing according to claim 1 is characterized in that: be provided with spring groove behind at FPM rubber master lip, and be provided with spring in spring groove; Place, spring groove tail end plane has been press-fitted a gear spring with being press-fitted metal frame in oil sealing; The gear spring has a plurality of small sircle holes with being press-fitted the metal frame circle designs.
3. a kind of heavy goods vehicles running shaft oil sealing according to claim 1, it is characterized in that: the lip limit mold pressing between the first secondary lip, the second secondary lip, main lip is laid with the dextrorotation oil drive back thread.
4. a kind of heavy goods vehicles running shaft oil sealing according to claim 2, it is characterized in that: described spring is φ 0.3 * φ 2.0, the long 4.0～4.8mm of its waist, the thick 1.0～1.2mm of waist.
5. a kind of heavy goods vehicles running shaft oil sealing according to claim 1 is characterized in that: be provided with 6～8 equal portions rubber tongues at vulcanizate with the metal frame inboard, make gear
BulletSpring is with being press-fitted metal frame external diameter and equal portions rubber tongue interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205347147U CN202812211U (en) | 2012-10-19 | 2012-10-19 | Oil seal used by rotating shaft of heavy duty vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205347147U CN202812211U (en) | 2012-10-19 | 2012-10-19 | Oil seal used by rotating shaft of heavy duty vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812211U true CN202812211U (en) | 2013-03-20 |
Family
ID=47871081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205347147U Expired - Lifetime CN202812211U (en) | 2012-10-19 | 2012-10-19 | Oil seal used by rotating shaft of heavy duty vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076196A (en) * | 2020-08-21 | 2022-02-22 | 中车时代电动汽车股份有限公司 | Bionic oil seal for motor |
-
2012
- 2012-10-19 CN CN2012205347147U patent/CN202812211U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076196A (en) * | 2020-08-21 | 2022-02-22 | 中车时代电动汽车股份有限公司 | Bionic oil seal for motor |
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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: 20130320 |