CN109404517A - Sealing element and speed changer - Google Patents
Sealing element and speed changer Download PDFInfo
- Publication number
- CN109404517A CN109404517A CN201710697130.9A CN201710697130A CN109404517A CN 109404517 A CN109404517 A CN 109404517A CN 201710697130 A CN201710697130 A CN 201710697130A CN 109404517 A CN109404517 A CN 109404517A
- Authority
- CN
- China
- Prior art keywords
- sealing element
- sealing
- axis
- lip
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
A kind of sealing element and speed changer, wherein sealing element includes: sealing lip；Further include: and the clockwork spring that is set in the sealing lip on coaxial with the sealing lip, for carrying out radial limit to the sealing lip.Sealing element of the invention can be installed in small space, play sealing function.
Description
Technical field
The present invention relates to technical field of sealing technology, and in particular to a kind of sealing element and speed changer.
Background technique
Existing electrically driven speed change case is equipped with motor in the shell of gearbox, the axis rotation in motor driven gearbox.
The electric machine casing of motor, the shell of gearbox and axis can surround accommodation space.It will be installed sealing element in this accommodation space, it is close
Sealing contacts the shell for being sealed in axis and gearbox, to prevent the oil leakage in gearbox.Since axis can rotate, sealing element
Understand radially play, is separated with axis.Therefore, ring elastic parts can be equipped on the sealing lip of sealing element, to apply diameter to sealing lip
Xiang Li prevents sealing lip radially play so that elastic component holds sealing lip tightly.
But existing Gearbox design is more compact, so that above-mentioned accommodation space is narrow, in order to provide enough radial forces,
The diameter of section of elastic component is larger, so that the size of sealing element in the axial direction is larger.Existing sealing element is mounted on accommodation space
After interior, narrow accommodation space can make sealing element form interference with the shaft shoulder of electric machine casing or axis in the axial direction, so that sealing
Part fails, and the lubricating oil in gearbox can be revealed.
Summary of the invention
Problems solved by the invention is that existing sealing element axial dimension is larger, in small space can with electric machine casing or
Shaft shoulder interference, leads to seal fails.
To solve the above problems, the present invention provides a kind of sealing element, comprising: sealing lip；Further include: it is same with the sealing lip
Axis and the clockwork spring being set on the sealing lip, for carrying out radial limit to the sealing lip.
Optionally, the sealing lip is equipped with annular groove, to accommodate the clockwork spring.
Optionally, the annular groove is closed ring structure or the ring structure for being formed with opening along circumferential direction.
Optionally, the sealing lip axially extends.
Optionally, the sealing element further includes ring body, the coaxially connected diameter in the ring body of the sealing lip
Inwardly.
Optionally, the sealing element further includes skeleton, is embedded in the ring body.
Optionally, the sealing element is hard material.
Optionally, the material of the sealing element is PTFE.
The present invention also provides a kind of speed changers, comprising: shell；
Axis is located in the shell；
Electric machine casing is located in the shell, with the axially spaced setting of the axis, the shell, the electric machine casing
And the axis surrounds accommodation space；
Sealing element described in any of the above embodiments, is located at the accommodation space, and the sealing element contact is sealed in the shell
With the axis.
Optionally, the sealing lip contacts sealing with the axis.
Compared with prior art, technical solution of the present invention has the advantage that
The sealing lip of sealing element of the invention is equipped with clockwork spring, and the characteristic of clockwork spring itself makes at lesser section
It remains to provide enough radial forces to sealing lip under the size of face, so that sealing lip holds the axis for the sealing of being contacted tightly.Due to clockwork spring
The sectional dimension of spring becomes smaller, so that the axial dimension of sealing element becomes smaller, then when sealing element is installed in narrow space, it is close
Sealing will not interfere with electric machine casing or the shaft shoulder in the axial direction, and sealing element will not fail, to play sealing function.
Detailed description of the invention
Fig. 1 is the perspective view of sealing element of the embodiment of the present invention；
Fig. 2 is the cross-sectional view one of sealing element of the embodiment of the present invention；
Fig. 3 is the cross-sectional view two of sealing element of the embodiment of the present invention；
Fig. 4 is the perspective view of clockwork spring of the embodiment of the present invention；
Fig. 5 is the cross-sectional view of clockwork spring of the embodiment of the present invention.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
For hybrid vehicle or pure electric automobile, motor as a source of power, instead of engine.Motor and speed change
Axis connection in device, with drive shaft turns.Axis in speed changer needs to lubricate during rotation, otherwise will appear abrasion, and one
As be designed with lubricating oil to lubricate axis in speed changer.And there is gap radially in the shell of axis and speed changer, to prevent from becoming
Lubricating oil in fast device can be leaked out by this gap, generally can seal this gap by sealing element.
But for hybrid vehicle and pure electric automobile, the design of speed changer is more compact, and motor is set in speed changer,
The axially spaced setting of axis in electric machine casing and speed changer, the shell of electric machine casing, axis and speed changer surround accommodation space.It is close
Sealing is set in this accommodation space, but the accommodation space is more narrow.
As described in the background section, because using ring elastic parts, the cross section of ring elastic parts is in existing sealing element
The diameter of section of circle, ring elastic parts is larger, so that the axial dimension of sealing element is larger, meeting and motor casing in small space
Body or shaft shoulder interference, lead to seal fails.
For this purpose, referring to figs. 1 to Fig. 3, the present invention provides a kind of sealing element 10, comprising: ring body 11, ring body 11
Radially inner side is coaxially connected with sealing lip 12, and sealing lip 12 extends along axial direction (in Fig. 3 shown in X-direction).Wherein, in sealing lip 12
Upper coaxial sleeve is equipped with clockwork spring 14, and clockwork spring 14 is for carrying out radial limit to sealing lip 12.
With reference to Fig. 4, clockwork spring 14 is the ring junction for having opening 14a along its circumferential direction (in Fig. 4 shown in Y-direction)
Structure supports big opening 14a, clockwork spring 14 is smoothly set in outside sealing lip 12, later clockwork spring 14 in assembly
Opening 14a shrink, allow clockwork spring 14 to hold sealing lip 12 tightly, clockwork spring 14 can carry out radial direction to sealing lip 12
Limit.The structure of clockwork spring 14 is without being limited thereto, and as a kind of variation, clockwork spring 14 is closed ring structure.It is answering
With in occasion, the size of designed openings 14a Y along circumferential direction meets: clockwork spring 14 itself can be formed with sealing lip 12
The radial limit of effect.
With reference to Fig. 5, in the present embodiment, in flat, the material of clockwork spring 14 is spring for the cross section of clockwork spring 14
Steel.Different from the structure of ring elastic parts in the prior art, the width (in Fig. 5 shown in L) of clockwork spring 14 of the present invention is greater than hair
The thickness of bar spring 14 (in Fig. 5 shown in M).The width of clockwork spring 14 of the invention in 1mm between 1.5mm, including 1mm and
1.5mm, thickness in 0.2mm between 0.5mm, including 0.2mm and 0.5mm.
And the diameter of ring elastic parts is in 2.5mm between 3mm in the prior art.The width of clockwork spring 14 of the invention
Size reduces, i.e. the axial dimension of clockwork spring 14 becomes smaller, while the thickness of clockwork spring 14 of the invention reduces, and is equivalent to this
Invention makees flaky process to clockwork spring 14.
The characteristic of clockwork spring 14 itself to remain to provide enough diameters to sealing lip 12 under lesser sectional dimension
Xiang Li, so that sealing lip 12 holds the axis for the sealing of being contacted tightly.Since the sectional dimension of clockwork spring 14 becomes smaller, so that sealing element
10 axial dimension becomes smaller, and has saved the space of sealing element in the axial direction.When sealing element 10 is installed so in narrow space,
Sealing element 10 will not interfere with electric machine casing or the shaft shoulder in the axial direction, and sealing element 10 will not fail, to play sealing function.
With reference to Fig. 2, sealing lip 12 is equipped with annular groove 13, for accommodating clockwork spring 14.Annular groove 13 is closing
Ring structure or be formed with the ring structure of opening along circumferential direction.After clockwork spring 14 is set in annular groove 13,
14 axial float of clockwork spring can be prevented, so that 12 stable connection of clockwork spring 14 and sealing lip, then clockwork spring 14 can
Steadily radial force is provided to sealing lip 12.
It should be noted that the material of sealing element 10 of the invention is hard material, e.g. PTFE
(Polytetrafluoroethylene's writes a Chinese character in simplified form).The Chinese of PTFE is polytetrafluoroethylene (PTFE), is commonly called as King, is had good
Good hardness, is not susceptible to deform.PTFE also has good chemical stability and thermal stability, can under extreme conditions according to
Excellent stability is so kept, sealing function of playing stably to obtain.
In addition, sealing element 10 of the invention further includes skeleton 15 with continued reference to Fig. 2, it is embedded in ring body 11, this makes
Obtain the compact-sized of sealing element 10.Also, skeleton 15 is buried, so that sealing element 10 is fixed on speed changer by ring body 11
Shell (not shown go out), the contact area between ring body 11 and case of transmission increase, and sealing effect is enhanced.Separately
Outside, skeleton 15 plays a supporting role to ring body 11, increases the support strength of ring body 11.
The present invention also provides a kind of speed changer (not shown go out), comprising: shell；Axis is located in shell；Electric machine casing, position
In in shell, electric machine casing and the axially spaced setting of axis, shell, electric machine casing and the axis of speed changer surround accommodation space；By
Compact in speed changer structure, the accommodation space is narrow, and sealing element 10 described above, sealing element 10 are equipped in the accommodation space
Contact is sealed in the shell and axis of speed changer.Specifically, the sealing lip 12 of sealing element 10 contacts sealing with axis.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of sealing element, comprising: sealing lip；It is characterized by further comprising: coaxial with the sealing lip and be set in described close
The clockwork spring on lip is sealed, for carrying out radial limit to the sealing lip.
2. sealing element as described in claim 1, which is characterized in that the sealing lip is equipped with annular groove, described in accommodating
Clockwork spring.
3. sealing element as claimed in claim 2, which is characterized in that the annular groove is for closed ring structure or along week
The ring structure of opening is formed with to direction.
4. sealing element as described in claim 1, which is characterized in that the sealing lip axially extends.
5. sealing element as described in claim 1, which is characterized in that the sealing element further includes ring body, the sealing lip
The coaxially connected radially inner side in the ring body.
6. sealing element as claimed in claim 5, which is characterized in that the sealing element further includes skeleton, is embedded in the annular
In ontology.
7. sealing element as described in claim 1, which is characterized in that the sealing element is hard material.
8. sealing element as claimed in claim 7, which is characterized in that the material of the sealing element is PTFE.
9. a kind of speed changer characterized by comprising
Shell；
Axis is located in the shell；
Electric machine casing is located in the shell, with the axially spaced setting of the axis, the shell, the electric machine casing and institute
It states axis and surrounds accommodation space；
The described in any item sealing elements of claim 1-8, are located at the accommodation space, and the sealing element contact is sealed in the shell
Body and the axis.
10. speed changer as claimed in claim 9, which is characterized in that the sealing lip contacts sealing with the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710697130.9A CN109404517A (en) | 2017-08-15 | 2017-08-15 | Sealing element and speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710697130.9A CN109404517A (en) | 2017-08-15 | 2017-08-15 | Sealing element and speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404517A true CN109404517A (en) | 2019-03-01 |
Family
ID=65454093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710697130.9A Pending CN109404517A (en) | 2017-08-15 | 2017-08-15 | Sealing element and speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404517A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB896514A (en) * | 1957-03-08 | 1962-05-16 | Cyril Charles Evans | Improvements in or relating to oil seals |
| GB1057629A (en) * | 1963-12-12 | 1967-02-01 | Super Oil Seals & Gaskets Ltd | Seals |
| US5984316A (en) * | 1997-12-12 | 1999-11-16 | Bal Seal Engineering Company, Inc. | Rotary reciprocating seals with internal metal band |
| WO2001053682A1 (en) * | 2000-01-18 | 2001-07-26 | Dingcheng Xu | A piston assembly with tongue-like flat seals |
| CN101153662A (en) * | 2006-09-28 | 2008-04-02 | 通用汽车环球科技运作公司 | Temperature adaptive radial shaft seal assemblies using shape memory alloy elements |
| CN104676008A (en) * | 2015-03-03 | 2015-06-03 | 深圳市长江机械设备有限公司 | Sealing mechanism |
| CN204921992U (en) * | 2015-06-25 | 2015-12-30 | 舍弗勒技术股份两合公司 | Lip seal spare |
| US20160131260A1 (en) * | 2011-10-26 | 2016-05-12 | Federal-Mogul Corporation | Radial shaft seal, radial shaft seal assembly and method of installation |
| CN105793627A (en) * | 2013-12-02 | 2016-07-20 | Ｋｙｂ株式会社 | Seal device |
| CN205978432U (en) * | 2016-07-15 | 2017-02-22 | 舍弗勒技术股份两合公司 | Pump sending sealing device and pump sending sealing system |
| CN206386475U (en) * | 2016-09-13 | 2017-08-08 | 舍弗勒技术股份两合公司 | Lip-type packing |
-
2017
- 2017-08-15 CN CN201710697130.9A patent/CN109404517A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB896514A (en) * | 1957-03-08 | 1962-05-16 | Cyril Charles Evans | Improvements in or relating to oil seals |
| GB1057629A (en) * | 1963-12-12 | 1967-02-01 | Super Oil Seals & Gaskets Ltd | Seals |
| US5984316A (en) * | 1997-12-12 | 1999-11-16 | Bal Seal Engineering Company, Inc. | Rotary reciprocating seals with internal metal band |
| WO2001053682A1 (en) * | 2000-01-18 | 2001-07-26 | Dingcheng Xu | A piston assembly with tongue-like flat seals |
| CN101153662A (en) * | 2006-09-28 | 2008-04-02 | 通用汽车环球科技运作公司 | Temperature adaptive radial shaft seal assemblies using shape memory alloy elements |
| US20160131260A1 (en) * | 2011-10-26 | 2016-05-12 | Federal-Mogul Corporation | Radial shaft seal, radial shaft seal assembly and method of installation |
| CN105793627A (en) * | 2013-12-02 | 2016-07-20 | Ｋｙｂ株式会社 | Seal device |
| US20160305552A1 (en) * | 2013-12-02 | 2016-10-20 | Kyb Corporation | Seal device |
| CN104676008A (en) * | 2015-03-03 | 2015-06-03 | 深圳市长江机械设备有限公司 | Sealing mechanism |
| CN204921992U (en) * | 2015-06-25 | 2015-12-30 | 舍弗勒技术股份两合公司 | Lip seal spare |
| CN205978432U (en) * | 2016-07-15 | 2017-02-22 | 舍弗勒技术股份两合公司 | Pump sending sealing device and pump sending sealing system |
| CN206386475U (en) * | 2016-09-13 | 2017-08-08 | 舍弗勒技术股份两合公司 | Lip-type packing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7214807B2 (en) | sealing device | |
| US20110101807A1 (en) | Hydrodynamic bearing assembly and motor having the same | |
| US9035518B2 (en) | Bearing device for supporting rotatable shaft of electric motor | |
| JP2009103142A (en) | Sealing device | |
| CN205446408U (en) | Bearing structure and forced draught blower | |
| US10006503B2 (en) | Release bearing and clutch release bearing device | |
| JPWO2014030742A1 (en) | Sealing device | |
| CN106195026A (en) | A kind of bearing cap device for sealing magnetic fluid | |
| CN104204633B (en) | Magnetic fluid seal | |
| JP6051342B1 (en) | Rotary connector | |
| CN101309027B (en) | Electric motor | |
| CN103238012A (en) | Sealing device and sealing structure | |
| CN108343675B (en) | Sealing structure for rotary machine, and sealing member | |
| CN109404517A (en) | Sealing element and speed changer | |
| CN113474568B (en) | Sealing device | |
| JP2009115283A (en) | Bearing for alternator | |
| CN108071708B (en) | Release bearing | |
| JP2018048660A (en) | Seal device | |
| AU2016215900A1 (en) | Mechanical seal | |
| JP5910385B2 (en) | Sealing device | |
| CN108150524B (en) | Thrust bearing and retainer for thrust bearing | |
| KR100793876B1 (en) | Rear cover assembly for automatic transmission | |
| CN220915048U (en) | Motor end cover sealing structure and motor | |
| CN104595355A (en) | Bearing and motor having same | |
| JP2013249875A (en) | Friction drive-type wave transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |