CN205278375U - Oil blanket structure - Google Patents
Oil blanket structure Download PDFInfo
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- CN205278375U CN205278375U CN201520910633.6U CN201520910633U CN205278375U CN 205278375 U CN205278375 U CN 205278375U CN 201520910633 U CN201520910633 U CN 201520910633U CN 205278375 U CN205278375 U CN 205278375U
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- oil
- seal lip
- oil blanket
- enveloping structure
- sealing body
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Abstract
The utility model provides an oil blanket structure belongs to mechanical technical field. It has solved the problem that how to improve oil blanket structure's sealing performance and life. This oil blanket structure includes the skeleton and is annular oil blanket body, the outside of oil blanket body has and is annular outer lane, the primary seal lip has on the outer peripheral face of outer lane, the inboard of oil blanket body has the inner circle, the inner circle can with the motor shaft tight fit. This oil blanket structure passes through the improvement to close cover position, has improved oil blanket structure's sealing performance greatly, through axial and radial dual and many lips design of a seal structure, sealing performance is better, through design protection bowl, the protection seal lip does not contact with external media such as fluid, silt, water, dusts, has improved the operational environment of seal lip, has improved oil blanket structure's ageing resistance, wearability and life, and then improves the holistic sealing performance of oil blanket structure.
Description
Technical field
The utility model belongs to field of mechanical technique, it relates to a kind of sealing member, particularly a kind of oil enveloping structure.
Background technology
Oil sealing is a kind of sealing member, can be divided into various ways and different call according to the sealing effect of oil sealing, feature, structure type, working order and sealing mechanism etc., but generally rotary shaft lip seal is called oil sealing traditionally.
Such as Chinese patent [application number: 201120047889.0; Authorization Notice No.: CN201992072U] a kind of narrow limit shape outside framework oil seal. This oil sealing comprises skeleton, spring, primary seal lip and dust excluder lips, and wherein, the bottom of skeleton and the one end being connected with rubber are presented and stuck up shape. Such as Chinese patent [application number: 201210034716.4 again; Authorization Notice No. CN102563083B] disclose the combination oil sealing of a kind of band sealing-ring, comprise skeleton, from tight whisker and the main oil seal body being provided with primary seal lip and dust excluder lips; The main shack that skeleton comprises frame circle and the front end with frame circle is fixedly connected with, main oil seal body is connected with main shack; Oil sealing also comprises the secondary oil seal body and sealing-ring that are provided with secondary sealing lip; Skeleton is provided with the secondary shack being fixedly connected with frame circle; Secondary oil seal body is connected with secondary shack; Having two from tight whisker, two are enclosed within the periphery of main oil seal body and the periphery of secondary oil seal body respectively from tight whisker; The periphery of frame circle is provided with the sealing groove placing sealing-ring.
Above-mentioned oil sealing or traditional stem seal design object majority are for oil sealing, prevent the lubricating oil in mechanism's die cavity to outward leakage. Main lip is interior, and contacts with the lubricating oil in die cavity, undertakes sealing effect; Secondary lip outside, undertakes dustproof effect. Working medium when this kind of oil sealing is applied is generally lubricating oil, and wear resistance can be higher under the effect of lubricating oil for sealing lip, and the life-span is also long. This kind of oil sealing is applied also widely, and comparatively universal. And in fact, in daily a lot of mechanical means, also there is the sealing demand that some are completely contrary with conventional seals, this kind of physical construction such as such as electric motor, hub bearing etc. or equipment, its inside is electricity piece or precise part, it is necessary to application sealing mechanism ensures that internal electric or precise part are not damaged. The object of this kind of sealing prevents exterior object from entering motor internal, and this kind of sealing is generally not capable of the protection of lubricating oil, is in dry grinding state time more, if outside atmosphere is relatively more severe, the oil sealing life-span is extremely short. Its special structure design of hub for electric vehicle motor and wind, Exposure to Sunlight, the special Working environment such as drench with rain, and its oil sealing easily lost efficacy and causes motor entering water, was exactly the most typical example.
When the combination oil sealing of above-mentioned narrow limit shape outside framework oil seal and band sealing-ring and most rotation lip oil sealings of prior art work, oil seal lip and motor shaft are on same straight line or face, when motor shaft or oil sealing rotate, muddy water or outside medium have almost just become abrasive, more can accelerate oil sealing abrasion and lose efficacy, adding that oil sealing rubber bodies directly contacts with outside, be easy to ageing failure, sealing property is deteriorated.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, it is proposed that a kind of oil enveloping structure, the technical problem that the utility model solves is sealing property and work-ing life how to improve oil enveloping structure.
The purpose of this utility model realizes by following technical proposal: a kind of oil enveloping structure, comprise skeleton and the oil sealing body in annular, it is characterized in that, the outside of described oil sealing body has outer ring in the form of a ring, the periphery of described outer ring has primary seal lip, the inner side of described oil sealing body has inner ring, described inner ring can with motor shaft wringing fit.
Being different from prior art, this oil enveloping structure realizes the lifting of oil enveloping structure sealing property by changing the position in dynamic seal face. Specifically, the principle of work of this oil enveloping structure is as follows: the inner ring of this oil enveloping structure and motor shaft wringing fit, outer ring and electric motor end cap are relations in relative rotation, and outer ring contacts cooperation with hole in electric motor end cap, also the dynamic seal face being exactly this oil enveloping structure is the outer side of outer ring, by this design, make trim by integral raising, make the primary seal lip not direct rotating contact with motor shaft, the media such as fluid, silt, water, dust can not be inhaled into motor internal because motor shaft rotates, thus improves the sealing property of oil enveloping structure; Meanwhile, being subject to producing when motor shaft rotates the impact of centrifugal force, the primary seal lip being positioned at outer ring outer side is more tight with the contact of motor axis hole, thus raising sealing effect herein; Therefore, by above to the improvement of trim position, substantially increasing the sealing property of oil enveloping structure.
In above-mentioned oil enveloping structure, the protection bowl being arranged with lid outside described outer ring, the bottom of described protection bowl has open holes, described inner ring in the form of a ring and end there is outwardly round platform, described open holes and round platform running fit, described primary seal lip is resisted against on the inwall of described protection bowl. during use, protect hole in bowl and electric motor end cap can not be tightly fixed, in axle rotary applications, primary seal lip along with motor shaft together relative to protection bowl rotate, in end cap rotary applications, protection bowl rotates relative to primary seal lip with end cap, after protection bowl structure is set, by sealing lip protection inside protection bowl, guarantee that the extraneous media such as silt directly do not contact with sealing lip, improve the Working environment of sealing lip, simultaneously, by by the location improvement of trim to protection bowl and sealing lip between, due to hole in the protection relative electric motor end cap of bowl, its processing roughness is more prone to control, make sealing lip more wear-resisting, therefore, by arranging protection bowl, it is to increase work-ing life of whole oil enveloping structure, enable oil enveloping structure continue work for a long time, and then enhance the sealing property of whole oil enveloping structure.
In above-mentioned oil enveloping structure, described oil sealing body having multiple shoulder seal lip being disposed radially, described shoulder seal lip is between the bottom and oil sealing body of described protection bowl and is resisted against on the inner bottom surface of described protection bowl. By arranging multiple shoulder seal lip, increase the sealing surface area of oil enveloping structure radial end face, be conducive to improving the sealing property of oil enveloping structure.
In above-mentioned oil enveloping structure, the periphery of described outer ring having the multiple radial seal lips arranged vertically, described radial seal lip is positioned at the side of primary seal lip near oil sealing body. By arranging multiple radial seal lip, increase the sealing surface area of oil enveloping structure axis, be conducive to improving the sealing property of oil enveloping structure.
In above-mentioned oil enveloping structure, between described protection bowl and outer ring, protection bowl and oil sealing body between all there is space, be filled with lubricating grease in described space. Lubricating grease not only plays lubrication, and can play and stop that the extraneous medium such as silt, dust enters into motor internal by space, is that it creates a lubricant environment, it is to increase the sealing property of oil enveloping structure entirety and work-ing life.
In above-mentioned oil enveloping structure, described skeleton comprises axial direction part and radial section, and described axial direction part is positioned at described inner ring, and described radial section is positioned at described oil sealing body. By the position of reasonable Arrangement skeleton, it is to increase oil enveloping structure and motor shaft coordinate elasticity and the rigidity of intensity and oil sealing sealing lip direction rubber bodies, thus improve the work-ing life of oil enveloping structure.
In above-mentioned oil enveloping structure, the inner peripheral surface of described outer ring being embedded with external tension spring, the position of described external tension spring is relative with the position of primary seal lip. By arranging external tension spring so that in primary seal lip and electric motor end cap, the contact of hole or protection bowl inwall is more tight, thus be conducive to the stopping property that improves herein.
Compared with prior art, this oil enveloping structure has the following advantages: 1, this oil enveloping structure is by the improvement to trim position, substantially increases the sealing property of oil enveloping structure; 2, by axis and radial direction is dual and many lip seals structure design for this oil enveloping structure, and sealing property is better; 3, this oil enveloping structure is by design protection bowl; protection sealing lip is the extraneous medium contact with fluid, silt, water, dust etc. not; improve the Working environment of sealing lip, it is to increase the resistance of aging of oil enveloping structure, wear resistance and work-ing life, and then improve the sealing property of oil enveloping structure entirety.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of oil enveloping structure in embodiment one.
Fig. 2 is the assembling application schematic diagram of oil enveloping structure in embodiment one.
Fig. 3 is the schematic diagram of oil enveloping structure in embodiment two.
Fig. 4 is the assembling application schematic diagram of oil enveloping structure in embodiment two.
Fig. 5 is the schematic diagram of oil enveloping structure in embodiment three.
In figure, 1, skeleton; 1a, axial direction part; 1b, radial section; 2, oil sealing body; 3, outer ring; 4, primary seal lip; 5, inner ring; 51, round platform; 6, bowl is protected; 7, open holes; 8, shoulder seal lip; 9, radial seal lip; 10, space; 11, lubricating grease; 12, external tension spring; 13, motor shaft; 14, electric motor end cap; 15, anti-protecting cover; 16, interior sealing lip.
Embodiment
The following is specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.
Embodiment one:
This oil enveloping structure comprises skeleton 1, axial direction part 1a, radial section 1b, oil sealing body 2, outer ring 3, primary seal lip 4, inner ring 5, round platform 51, protection bowl 6, open holes 7, shoulder seal lip 8, radial seal lip 9, space 10, lubricating grease 11, external tension spring 12.
Specifically, as shown in Figure 1, this oil enveloping structure comprises skeleton 1, oil sealing body 2, is positioned at the outer ring 3 in the form of a ring outside oil sealing body 2 and is positioned at the inner ring 5 in the form of a ring inside oil sealing body 2. Skeleton 1 comprises axial direction part 1a and radial section 1b, and axial direction part 1a is positioned at inner ring 5, and radial section 1b is positioned at oil sealing body 2. The radial seal lip 9 having primary seal lip 4 on the periphery of outer ring 3 and arrange vertically, radial seal lip 9 is positioned at the side of primary seal lip 4 near oil sealing body 2. Being embedded with external tension spring 12 on the inner peripheral surface of outer ring 3, the position of external tension spring 12 is relative with the position of primary seal lip 4.
The protection bowl 6 being arranged with lid outside outer ring 3, the bottom of protection bowl 6 has open holes 7, and the end of inner ring 5 has outwardly round platform 51, and open holes 7 and round platform 51 running fit, primary seal lip 4 and radial seal lip 9 are all resisted against on the inwall of protection bowl 6. Having multiple shoulder seal lip 8 being disposed radially on oil sealing body 2, shoulder seal lip 8 is between the bottom and oil sealing body 2 of protection bowl 6 and is resisted against on the inner bottom surface of protection bowl 6. Protection bowl 6 and outer ring 3 between, protection bowl 6 and oil sealing body 2 between all there is space 10, be filled with lubricating grease 11 in space 10.
As shown in Figure 2, when above-mentioned oil enveloping structure is applied on wheel hub electric motor of electric vehicle, it is as follows that it installs mode: motor shaft 13 wringing fit of above-mentioned inner ring 5 and wheel hub motor, the interior hole wringing fit of above-mentioned protection bowl 6 and electric motor end cap 14. By installing this oil enveloping structure, it is to increase wheel hub electric motor of electric vehicle the rainy day or cross the easy water inlet such as puddle environment for use under water resistance.
Embodiment two:
Technical scheme in the present embodiment and the technical scheme in embodiment one are substantially identical, difference is, as shown in Figure 3, in the present embodiment, outer ring 3 is outer does not arrange protection bowl 6 structure, and on the periphery of outer ring 3, it being provided with the multiple radial seal lips 9 arranged vertically, radial seal lip 9 is positioned at the side of primary seal lip 4 near oil sealing body 2. As shown in Figure 4, when above-mentioned oil enveloping structure is applied on wheel hub electric motor of electric vehicle, primary seal lip 4 and each radial seal lip 9 are all resisted against on the interior hole inwall of electric motor end cap 14, and electric motor end cap 14 outside oil enveloping structure is provided with anti-protecting cover 15, realize the water resistance to wheel hub electric motor of electric vehicle with this.
Embodiment three:
Technical scheme in the present embodiment and the technical scheme in embodiment one are substantially identical, difference is, as shown in Figure 5, in the present embodiment, for guaranteeing all to be in inside and outside primary seal lip 4 lubricant environment, the periphery of the outer ring 3 of oil sealing body 2 also has interior sealing lip 16 in the form of a ring, interior sealing lip 16 is positioned at the inner side of primary seal lip, in addition, the end face of round platform 51 is resisted against on the inner bottom surface of protection bowl 6, the inner peripheral surface of inner ring 5 is concordant with the inner peripheral surface of open holes 7 so that protection bowl 6 encases oil sealing body 2 completely.
Specific embodiment described herein is only to the utility model spirit explanation for example. Described specific embodiment can be made various amendment or supplements or adopt similar mode to substitute by the utility model person of ordinary skill in the field, but can't deviate spirit of the present utility model or surmount the scope that appended claims defines.
Although more employing the terms such as skeleton 1, axial direction part 1a, radial section 1b, oil sealing body 2, outer ring 3, primary seal lip 4, inner ring 5, round platform 51, protection bowl 6, open holes 7, shoulder seal lip 8, radial seal lip 9, space 10, lubricating grease 11, external tension spring 12, motor shaft 13, electric motor end cap 14, anti-protecting cover 15, interior sealing lip 16 herein, but not getting rid of the possibility using other term. These terms are used to be only used to describe and explain essence of the present utility model more easily; They are construed to any a kind of additional restriction all disagree with the utility model spirit.
Claims (7)
1. an oil enveloping structure, comprise skeleton (1) and the oil sealing body (2) in annular, it is characterized in that, the outside of described oil sealing body (2) has outer ring in the form of a ring (3), the periphery of described outer ring (3) has primary seal lip (4), the inner side of described oil sealing body (2) has inner ring (5), described inner ring (5) can with motor shaft (13) wringing fit.
2. oil enveloping structure according to claim 1, it is characterized in that, the protection bowl (6) of lid it is arranged with outside described outer ring (3), the bottom of described protection bowl (6) has open holes (7), described inner ring (5) in the form of a ring and end there is outwardly round platform (51), described open holes (7) and round platform (51) running fit, described primary seal lip (4) is resisted against on the inwall of described protection bowl (6).
3. oil enveloping structure according to claim 2, it is characterized in that, having multiple shoulder seal lip (8) being disposed radially on described oil sealing body (2), described shoulder seal lip (8) is positioned between the bottom of described protection bowl (6) and oil sealing body (2) and is resisted against on the inner bottom surface of described protection bowl (6).
4. oil enveloping structure according to claim 1 or 2 or 3, it is characterized in that, having the multiple radial seal lips (9) arranged vertically on the periphery of described outer ring (3), described radial seal lip (9) is positioned at the side of primary seal lip (4) near oil sealing body (2).
5. oil enveloping structure according to claim 2, it is characterized in that, between described protection bowl (6) and outer ring (3), protection bowl (6) and oil sealing body (2) between all there is space (10), be filled with lubricating grease (11) in described space (10).
6. oil enveloping structure according to claim 1 or 2 or 3, it is characterized in that, described skeleton (1) comprises axial direction part (1a) and radial section (1b), described axial direction part (1a) is positioned at described inner ring (5), and described radial section (1b) is positioned at described oil sealing body (2).
7. oil enveloping structure according to claim 1 or 2 or 3, it is characterized in that, being embedded with external tension spring (12) on the inner peripheral surface of described outer ring (3), the position of described external tension spring (12) is relative with the position of primary seal lip (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910633.6U CN205278375U (en) | 2015-11-16 | 2015-11-16 | Oil blanket structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910633.6U CN205278375U (en) | 2015-11-16 | 2015-11-16 | Oil blanket structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205278375U true CN205278375U (en) | 2016-06-01 |
Family
ID=56062953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520910633.6U Expired - Fee Related CN205278375U (en) | 2015-11-16 | 2015-11-16 | Oil blanket structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205278375U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240532A (en) * | 2015-11-16 | 2016-01-13 | 温岭市九洲电机制造有限公司 | Oil seal structure |
| CN108340848A (en) * | 2018-04-10 | 2018-07-31 | 北京汽车研究总院有限公司 | A kind of noise control dust-proofing seal and the vehicle with it |
| CN114855903A (en) * | 2022-04-29 | 2022-08-05 | 三一重机有限公司 | Connection structure of accessory and operation arm and operation machine |
-
2015
- 2015-11-16 CN CN201520910633.6U patent/CN205278375U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240532A (en) * | 2015-11-16 | 2016-01-13 | 温岭市九洲电机制造有限公司 | Oil seal structure |
| CN105240532B (en) * | 2015-11-16 | 2017-12-01 | 温岭市九洲电机制造有限公司 | A kind of oil enveloping structure |
| CN108340848A (en) * | 2018-04-10 | 2018-07-31 | 北京汽车研究总院有限公司 | A kind of noise control dust-proofing seal and the vehicle with it |
| CN114855903A (en) * | 2022-04-29 | 2022-08-05 | 三一重机有限公司 | Connection structure of accessory and operation arm and operation machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20191116 |