CN207421286U - Oil seal of rear output end of transfer case of military off-road vehicle - Google Patents
Oil seal of rear output end of transfer case of military off-road vehicle Download PDFInfo
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- CN207421286U CN207421286U CN201721344912.6U CN201721344912U CN207421286U CN 207421286 U CN207421286 U CN 207421286U CN 201721344912 U CN201721344912 U CN 201721344912U CN 207421286 U CN207421286 U CN 207421286U
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- Prior art keywords
- lip
- oil
- epipharynx
- outer lip
- oil sealing
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Abstract
The utility model discloses an oil seal of rear output end of transfer case of military off-road vehicle, which comprises an oil seal body, wherein the lip opening of the oil seal body is circumferentially provided with an outer lip framework, the outer lip framework comprises a U-shaped notch, edges at two sides of the end part of the U-shaped notch respectively bend and extend towards the inner side and the outer side of the oil seal body to form an inner framework and an outer framework, and the lip opening of the oil seal body is embedded into the U-shaped notch of the outer lip framework and is in interference fit with the U-shaped notch; an inner lip rubber body extending towards the outer side of the lip of the oil seal body is arranged in the region surrounded by the annular inner side wall of the U-shaped notch and the inner framework in the axial direction, and an inner lip sealing opening in interference fit with the output shaft is circumferentially arranged on the inner side surface of the inner lip rubber body. The utility model discloses an oil blanket is equipped with inside and outside two sealing lips to inside and outside lip sealing lips all is equipped with one-way oil return line, can get back to oil blanket one side with the lubricating-oil pump who reveals, and the oil that the pump was returned makes and forms lubricating film between lip and the axle simultaneously, plays sealed effect.
Description
Technical field
The utility model is related to Lubricating Oil cavity sealing device, in particular to output terminal after a kind of military offroad vehicle transfer case
Oil sealing.
Background technology
At present, general offroad vehicle is two tons or so of weight, and output terminal oil sealing generally uses single lip mouth oil seal after transfer case, but
It is certain new military offroad vehicle of cross-country traveling ability, complete vehicle weight is up to 6.3 tons, and needs to adapt to exceedingly odious weather conditions such as
The geographical environment desert of high temperature, severe cold etc. and complexity, plateau, are paddled at mountainous region, and output terminal is using conventional after former transfer case
Single lip mouth oil seal sealing, oil leak rate are up to 30%, seriously affect transfer case service life, and after-sale service is costly.This
Outside, oil leak also brings greater risk to offroad vehicle driving safety, easily causes security risk to driver and passenger.
In the prior art, the entitled a kind of rotation with oil-sealing mouth of the Chinese utility model of Publication No. CN101070913A
Turn oil sealing, there are one primary seal pasta and envelope dirt lip in inner ring, it is characterized in that：Primary seal pasta opposite side there are one oil sealing
Lip.The patent structure alleviates the pressure of primary seal pasta compression, extends the service life of primary seal pasta, but sealing performance is not
It is good, easily leak.Authorization Notice No. is that the Chinese utility model patent of CN 202118258U discloses a kind of oil with oil drive back thread
Envelope, including oil sealing main body, the lip inner circumferential of oil sealing main body is provided with the oil drive back thread comprising several convex blocks；Convex block is in water chestnut
Shape is inclined at the lip inner wall of oil sealing main body.Although the oil seal lip position sets diamond shape oil drive back thread, returned by oil drive back thread
Oily function sucks back the oil of leakage, but uses single lip mouth oil seal sealing dynamic sealing effect poor, returns oily energy force difference.
Utility model content
The purpose of this utility model seeks to solve the deficiency of above-mentioned background technology, provide a kind of oil leak rate it is low,
The oil sealing of output terminal after the high military offroad vehicle transfer case of security performance.
To achieve the above object, after the military offroad vehicle transfer case designed by the utility model output terminal oil sealing, including
Oil sealing body, the lip of the oil sealing body are circumferentially provided with outer lip skeleton, and the outer lip skeleton includes U-shaped recess, and U-shaped is recessed
The both sides of the edge of mouth end extend to form inner frame and outer skeleton, the oil sealing to the inside of oil sealing body, outer lateral bend respectively
It is interference fitted in the U-shaped recess of the lip insertion outer lip skeleton of body with it；
The circumferential lip being provided with towards oil sealing body in the region that the annular inner side wall of the U-shaped recess is surrounded with inner frame
The epipharynx rubber bodies of extension on the outside of mouthful, the medial surface of the epipharynx rubber bodies are circumferentially provided with the epipharynx with output shaft interference fit
Seal, the epipharynx seal are circumferentially provided with epipharynx oil drive back thread；
The medial surface of the inner frame is circumferentially provided with the outer lip rubber bodies being interference fitted with it, the outer lip rubber bodies
Medial surface is circumferentially provided with the outer lip seal with output shaft interference fit, and the outer lip seal is circumferentially provided with outer lip oil return
Line.
Further, the face that the epipharynx rubber bodies and U-shaped recess fit is compressive plane, the extruding with epipharynx rubber bodies
The opposite one side in face is compression face, and the compression face inner circumferential is provided with is molded the epipharynx skeleton of sulfidization molding with it.
Further, the outer lip skeleton is molded the outside of sulfidization molding towards being provided on the lateral wall of outer skeleton with it
Rubber bodies.
Further, the lateral surface of the epipharynx rubber bodies is provided with epipharynx annular groove, in the epipharynx annular groove
Embedded with cricoid epipharynx spring.
Further, the lateral surface of the outer lip rubber bodies is provided with outer lip annular groove, in the outer lip annular groove
Embedded with cricoid outer lip spring.
Further, the epipharynx oil drive back thread is arranged compared with the inclined of oil sealing body, and epipharynx oil drive back thread
It is arranged in parallel with outer lip oil drive back thread.
Yet further, the epipharynx oil drive back thread and outer lip oil drive back thread are unidirectional oil drive back thread.
Further, the metal component of the outer lip skeleton and epipharynx skeleton to be prepared by metal material.
Compared with prior art, it is as follows the advantages of the utility model：
First, the oil sealing of the utility model is equipped with inside and outside two seal lip, even if inner lip fails, outer lip still has
Good sealing effect, and inside, unidirectional oil drive back thread is equipped on the inside of outer lip seal, can be by the lubricating oil blowback of leakage
Oil to oil sealing one side, while blowback makes to form lubricating oil film between lip and axis, plays sealing function.
Second, the utility model has double-lip and each lip carries the structure of unidirectional oil drive back thread, can effectively solve
The oil leakage problem that military offroad vehicle moistens in adverse circumstances, complicated geographical environment and top load condition downward driving and occurred.
Third, the oil enveloping structure of the utility model is simple, sealing effect is good, effectively the longevity can be used by extended transfer case
Life, and improve the security of offroad vehicle traveling.
Description of the drawings
Fig. 1 be a kind of military offroad vehicle transfer case after output terminal oil sealing structure diagram；
Fig. 2 is the oil sealing assembling structure schematic diagram when in use of output terminal after military offroad vehicle transfer case shown in Fig. 1；
Fig. 3 is the oil sealing sealing principle schematic of oil drive back thread in Fig. 2；
In figure：1- oil sealings body, 2- outer lips skeleton, 2.1-U shapes recess, 2.2- inner frames, 2.3- outer skeleton, 3- epipharynx rubbers
Colloid, 3.1- epipharynxs annular groove, 4- epipharynxs seal, 5- epipharynxs oil drive back thread, 6- outer lips rubber bodies, 6.1- outer lip annulars are recessed
Slot, 7- outer lips seal, 8- outer lips oil drive back thread, 9- epipharynxs skeleton, 10- outer rubbers body, 11- epipharynxs spring, 12- outer lip bullets
Spring, 13- output shafts, 14- back casings.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
The oil sealing of output terminal after military offroad vehicle transfer case as shown in Figure 1, including oil sealing body 1, oil sealing body 1
Lip is circumferentially provided with the outer lip skeleton 2 with U-shaped recess 2.1, the U-shaped recess of the lip insertion outer lip skeleton 2 of oil sealing body 1
It is interference fitted in 2.1 with it, and the both sides of the edge of 2.1 end of U-shaped recess are prolonged respectively to the inside of oil sealing body 1, outer lateral bend
It stretches to form inner frame 2.2 and outer skeleton 2.3.It is circumferential in the region that the annular inner side wall of U-shaped recess 2.1 is surrounded with inner frame 2.2
The epipharynx rubber bodies 3 towards extension on the outside of the lip of oil sealing body 1 are provided with, the medial surface of epipharynx rubber bodies 3 is circumferentially provided with
The epipharynx seal 4 being interference fitted with output shaft 13, epipharynx seal 4 are circumferentially provided with epipharynx oil drive back thread 5；Inner frame 2.2
Medial surface is circumferentially provided with the outer lip rubber bodies 6 being interference fitted with it, and the medial surface of outer lip rubber bodies 6 is circumferentially provided with and exports
The outer lip seal 7 that axis 13 is interference fitted, outer lip seal 7 are circumferentially provided with outer lip oil drive back thread 8.
Epipharynx oil drive back thread 5 is arranged compared with the inclined of oil sealing body 1, and epipharynx oil drive back thread 5 and outer lip oil return
Line 8 is arranged in parallel.Epipharynx oil drive back thread 5 and outer lip oil drive back thread 8 are unidirectional oil drive back thread.Epipharynx rubber bodies 3 and 2.1 phase of U-shaped recess
The face of fitting is compressive plane, and the one side opposite with the compressive plane of epipharynx rubber bodies 3 is compression face, and compression face inner circumferential is provided with
The epipharynx skeleton 9 of sulfidization molding, the metal of outer lip skeleton 2 and epipharynx skeleton 9 to be prepared by metal material are molded with it
Component.Outer lip skeleton 2 is molded the outer rubber body 10 of sulfidization molding towards being provided on the lateral wall of outer skeleton 2.3 with it.It is interior
The lateral surface of lip rubber bodies 3 is provided with epipharynx annular groove 3.1, and epipharynx annular groove 3.1 is embedded with cricoid epipharynx spring 11.
The lateral surface of outer lip rubber bodies 6 is provided with outer lip annular groove 6.1, and outer lip annular groove 6.1 is embedded with cricoid outer lip spring
12。
When the utility model assembles, oil sealing body 1 passes through into outer lip skeleton 2, outer rubber body 10, outer lip rubber bodies 6
Pattern tool is molded together, is then inserted in outer lip spring 12, then by molded epipharynx skeleton 9, epipharynx rubber bodies 3, epipharynx spring
11 interference fit press-in outer lip skeletons 2 obtain complete oil sealing.Outer lip rubber bodies 6 are interference fitted with back casing 14, epipharynx seal 4
It is interference fitted with outer lip seal 7 and output shaft 13.Epipharynx seal 4, outer lip seal 7 respectively with unidirectional epipharynx oil drive back thread
5th, 8 shape of outer lip oil drive back thread forms an angle, and when output shaft 13 rotates, is learnt by principle of hydrodynamics, is formed at lip
Pumping effect, as see arrows 17 in fig 3, the Lubricating Oil that can would leak into air side is pumped back to lubricating oil to the pumping force direction of generation
Side, while the oil of blowback makes to form lubricating oil film between lip and axis, plays sealing function.Epipharynx oil drive back thread 5, outer lip oil drive back thread
8 rotation direction will be determined according to the direction that rotates in the forward direction of transfer case rear output shaft 1.For example, the direction of rotation of output shaft 13 is from dextrad
A left side is seen as counterclockwise, and the oil of leakage to be made is from air side blowback lubricating oil side, then oil sealing oil drive back thread rotation direction should be such as epipharynx in Fig. 1
Rotation direction shown in oil drive back thread 5, outer lip oil drive back thread 8.
The above is only specific embodiment of the present utility model, it is noted that any to be familiar with those skilled in the art
Member is in the revealed technical scope of the utility model, and the change or replacement that can readily occur in should all be covered in the utility model
Protection domain within.
Claims (8)
1. the oil sealing of output terminal after a kind of military offroad vehicle transfer case, including being threaded through output terminal after military offroad vehicle transfer case
Oil sealing body (1) on output shaft (13), it is characterised in that：The lip of the oil sealing body (1) is circumferentially provided with outer lip skeleton
(2), the outer lip skeleton (2) includes U-shaped recess (2.1), and the both sides of the edge of U-shaped recess (2.1) end are respectively to oil sealing
The inside of body (1), outer lateral bend extend to form inner frame (2.2) and outer skeleton (2.3), the lip of the oil sealing body (1)
It is interference fitted in the U-shaped recess (2.1) of embedded outer lip skeleton (2) with it；
Circumferential direction is provided with towards oil sealing sheet in the region that the annular inner side wall of the U-shaped recess (2.1) is surrounded with inner frame (2.2)
The epipharynx rubber bodies (3) of extension, the medial surface of the epipharynx rubber bodies (3) are circumferentially provided with and export on the outside of the lip of body (1)
The epipharynx seal (4) of axis (13) interference fit, the epipharynx seal (4) are circumferentially provided with epipharynx oil drive back thread (5)；In described
The medial surface of skeleton (2.2) is circumferentially provided with the outer lip rubber bodies (6) being interference fitted with it, the outer lip rubber bodies (6) it is interior
Side is circumferentially provided with the outer lip seal (7) with output shaft (13) interference fit, and the outer lip seal (7) is circumferentially provided with
Outer lip oil drive back thread (8).
2. the oil sealing of output terminal after military offroad vehicle transfer case according to claim 1, it is characterised in that：The epipharynx rubber
The face that colloid (3) and U-shaped recess (2.1) fit is compressive plane, the one side opposite with the compressive plane of epipharynx rubber bodies (3) be by
Pressure surface, the compression face inner circumferential is provided with is molded the epipharynx skeleton (9) of sulfidization molding with it.
3. the oil sealing of output terminal after military offroad vehicle transfer case according to claim 1, it is characterised in that：The outer lipstick
Frame (2) is molded the outer rubber body (10) of sulfidization molding towards being provided on the lateral wall of outer skeleton (2.3) with it.
4. the oil sealing of output terminal after the military offroad vehicle transfer case according to claim 1 or 2 or 3, it is characterised in that：It is described
The lateral surface of epipharynx rubber bodies (3) is provided with epipharynx annular groove (3.1), and the epipharynx annular groove (3.1) is embedded with ring-type
Epipharynx spring (11).
5. the oil sealing of output terminal after the military offroad vehicle transfer case according to claim 1 or 2 or 3, it is characterised in that：It is described
The lateral surface of outer lip rubber bodies (6) is provided with outer lip annular groove (6.1), and the outer lip annular groove (6.1) is embedded with ring-type
Outer lip spring (12).
6. the oil sealing of output terminal after the military offroad vehicle transfer case according to claim 1 or 2 or 3, it is characterised in that：It is described
Epipharynx oil drive back thread (5) is arranged compared with the inclined of oil sealing body (1), and epipharynx oil drive back thread (5) and outer lip oil drive back thread
(8) it is arranged in parallel.
7. the oil sealing of output terminal after military offroad vehicle transfer case according to claim 6, it is characterised in that：The epipharynx returns
Oily line (5) and outer lip oil drive back thread (8) are unidirectional oil drive back thread.
8. the oil sealing of output terminal after military offroad vehicle transfer case according to claim 2, it is characterised in that：The outer lipstick
The metal component of frame (2) and epipharynx skeleton (9) to be prepared by metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721344912.6U CN207421286U (en) | 2017-10-16 | 2017-10-16 | Oil seal of rear output end of transfer case of military off-road vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721344912.6U CN207421286U (en) | 2017-10-16 | 2017-10-16 | Oil seal of rear output end of transfer case of military off-road vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207421286U true CN207421286U (en) | 2018-05-29 |
Family
ID=62311828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721344912.6U Active CN207421286U (en) | 2017-10-16 | 2017-10-16 | Oil seal of rear output end of transfer case of military off-road vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207421286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701703A (en) * | 2017-10-16 | 2018-02-16 | 东风汽车有限公司 | Oil seal of rear output end of transfer case of military off-road vehicle |
| CN110086287A (en) * | 2019-06-04 | 2019-08-02 | 苏州绿控传动科技股份有限公司 | A kind of new-energy automobile power motor sealing structure |
-
2017
- 2017-10-16 CN CN201721344912.6U patent/CN207421286U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701703A (en) * | 2017-10-16 | 2018-02-16 | 东风汽车有限公司 | Oil seal of rear output end of transfer case of military off-road vehicle |
| CN107701703B (en) * | 2017-10-16 | 2023-10-27 | 东风汽车有限公司 | Oil seal at rear output end of transfer case of military off-road vehicle |
| CN110086287A (en) * | 2019-06-04 | 2019-08-02 | 苏州绿控传动科技股份有限公司 | A kind of new-energy automobile power motor sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211209 Address after: 442002 No. 138, Checheng West Road, Zhangwan District, Shiyan City, Hubei Province Patentee after: Dongfeng auto parts (Group) Co.,Ltd. blade measuring tool branch Patentee after: DONGFENG MOTER Co.,Ltd. Address before: 430056 No. 10 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Wuhan, Hubei Patentee before: DONGFENG MOTER Co.,Ltd. |