CN103454441A - Speed sensor - Google Patents
Speed sensor Download PDFInfo
- Publication number
- CN103454441A CN103454441A CN2013104193136A CN201310419313A CN103454441A CN 103454441 A CN103454441 A CN 103454441A CN 2013104193136 A CN2013104193136 A CN 2013104193136A CN 201310419313 A CN201310419313 A CN 201310419313A CN 103454441 A CN103454441 A CN 103454441A
- Authority
- CN
- China
- Prior art keywords
- shaft
- coupling shaft
- speed sensor
- extension
- speed
- 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.)
- Granted
Links
Images
Landscapes
- General Details Of Gearings (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention relates to a speed sensor which comprises a speed sensor shell body. A connecting shaft is connected at the lower end of the speed sensor shell body, two sets of sealing rings are arranged on the connecting shaft in the axial direction, the sealing performance of the connection of the speed sensor shell body and a speed changer shell body is good, and sealing reliability is high. An extending portion is connected with the lower end of the connecting shaft, a tapered shaft is connected between the connecting shaft and the extending portion, the extending portion is tapered, the big end of the tapered shaft is connected with the connecting shaft, the small end of the tapered shaft is connected with the big end of the extending portion, the speed sensor is arranged on a speed changer, and the fit clearance of the extending portion and a sensor mounting hole in the speed changer shell body is gradually decreased from bottom to top, splashed oil caused by the high-speed rotation of a gear can be effectively blocked, the direct impact of the oil on the sealing rings is reduced, and the service life of the speed sensor is prolonged.
Description
Technical field
The present invention relates to a kind of sensor, be applicable to measure the rotating speed of closed box (as wheel box) internal gear, specifically, relate to a kind of speed pickup, belong to field of mechanical technique.
Background technology
Speed pickup is mounted in a kind of speed probe on variator, be mainly used in the automatic gearbox control system, the gear rotational speed information that automatic gearbox control system Negotiation speed sensor provides is implemented accurate motion control, speed pickup is most important observing and controlling link in automatic transmission control system, and whether the measurement of speed pickup has accurately determined reliability, the security of automatic transmission and the ride comfort travelled.
In realizing process of the present invention, the inventor finds in prior art at least to exist following problem, speed pickup and gear box casing sealing adopt single ring structure sealing, and the coupling shaft of speed pickup and case of transmission is cylindric, the high oil pressure of variator inside and severe working environment easily make O-ring seal lose efficacy, cause leakage of oil, be restricted the serviceable life of speed pickup.
Summary of the invention
The technical problem to be solved in the present invention is for above deficiency, and a kind of speed pickup is provided, and has overcome short defect of easy oil leakage in the prior art, serviceable life, after adopting speed pickup of the present invention, has advantages of good airproof performance, long service life.
For solving above technical matters, the present invention by the following technical solutions: a kind of speed pickup, comprise sensor housing, it is characterized in that: the lower end of described sensor housing is connected with coupling shaft, coupling shaft is provided with two groups of O-ring seals.
A kind of prioritization scheme, the lower end of described coupling shaft is connected with extension;
Described extension is tapered, and the stub end of extension is connected with coupling shaft.
Another kind of prioritization scheme, be provided with diminished shaft between described extension and coupling shaft;
Stub end and the coupling shaft of described diminished shaft connect as one, and little head end and the extension of diminished shaft connect as one.
Another prioritization scheme, described O-ring seal comprises the first O-ring seal and the second O-ring seal;
Described the first O-ring seal and the second O-ring seal are along the axially parallel setting of coupling shaft.
After the present invention adopts above technical scheme, compared with prior art, have the following advantages: be provided with vertically two groups of O-ring seals on coupling shaft, the good airproof performance and the sealing reliability that with case of transmission, are connected are high; The lower end of coupling shaft is connected with extension, be connected with diminished shaft between coupling shaft and extension, and extension is also tapered, the stub end of diminished shaft is connected with coupling shaft, the little head end of diminished shaft is connected with the stub end of extension, described speed pickup is arranged on variator, the tolerance clearance of extension and case of transmission upper sensor mounting hole reduces from lower to upper gradually, can effectively block the oil that the high-speed gear running is splashed, reduce oil O-ring seal is directly impacted, extended the serviceable life of speed pickup.
Below in conjunction with drawings and Examples, the present invention is described in detail.
The accompanying drawing explanation
Accompanying drawing 1 is the structural representation of embodiment of the present invention medium velocity sensor;
Accompanying drawing 2 is use view of embodiment of the present invention medium velocity sensor;
Accompanying drawing 3 is the enlarged drawings at A place in accompanying drawing 2;
In figure,
The 1-sensor housing, 2-terminal, 3-fixed orifice, 4-the first O-ring seal, 5-the second O-ring seal, 6-coupling shaft, 7-diminished shaft, 8-extension, 9-case of transmission, 10-installation of sensors hole, 11-bolt.
Embodiment
Embodiment, as shown in Figure 1, a kind of speed pickup, comprise sensor housing 1, be provided with terminal 2 in sensor housing 1, sensor housing 1 is provided with fixed orifice 3, the lower end of sensor housing 1 is connected with coupling shaft 6, coupling shaft 6 is provided with two groups of O-ring seals, described O-ring seal comprises the first O-ring seal 4 and the second O-ring seal 5, described the first O-ring seal 4 and the second O-ring seal 5 are along the axially parallel setting of coupling shaft 6, the lower end of coupling shaft 6 is connected with extension 8, be provided with diminished shaft 7 between coupling shaft 6 and extension 8, the stub end of described diminished shaft 7 and coupling shaft 6 connect as one, little head end and the extension 8 of diminished shaft 7 connect as one, described extension 8 is tapered, the little head end of the stub end of extension 8 and diminished shaft 7 connects as one, the diameter of the little head end of extension 8 is slightly less than the diameter of the stub end of extension 8.
As shown in Figures 2 and 3, described speed pickup is fixedly installed on case of transmission 9 by bolt 11, the coupling shaft 6 of speed pickup is placed in the installation of sensors hole 10 on gear box casing 9, two groups of O-ring seals on coupling shaft 6 are connected with the inner wall sealing in installation of sensors hole 10 respectively, even in the situation that one group of O-ring seal lost efficacy, another group O-ring seal still can play effective sealing function, strengthened the sealing that speed pickup is connected with case of transmission, described extension 8 reduces from lower to upper gradually with the tolerance clearance in installation of sensors hole 10, can effectively block the oil that the high-speed gear running is splashed, reducing oil directly impacts O-ring seal, extended the serviceable life of speed pickup.
The above is giving an example of best mode for carrying out the invention, and the part of wherein not addressing in detail is those of ordinary skills' common practise.Protection scope of the present invention is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present invention, also within protection scope of the present invention.
Claims (4)
1. a speed pickup, comprise sensor housing (1), it is characterized in that: the lower end of described sensor housing (1) is connected with coupling shaft (6), and coupling shaft (6) is provided with two groups of O-ring seals.
2. a kind of speed pickup as claimed in claim 1, it is characterized in that: the lower end of described coupling shaft (6) is connected with extension (8);
Described extension (8) is tapered, and the stub end of extension (8) is connected with coupling shaft (6).
3. a kind of speed pickup as claimed in claim 2, is characterized in that: between described extension (8) and coupling shaft (6), be provided with diminished shaft (7);
The stub end of described diminished shaft (7) and coupling shaft (6) connect as one, and the little head end of diminished shaft (7) and extension (8) connect as one.
4. as one of them described a kind of speed pickup of claim 1-3, it is characterized in that: described O-ring seal comprises the first O-ring seal (4) and the second O-ring seal (5);
Described the first O-ring seal (4) and the second O-ring seal (5) are along the axially parallel setting of coupling shaft (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419313.6A CN103454441B (en) | 2013-09-16 | 2013-09-16 | A kind of velocity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419313.6A CN103454441B (en) | 2013-09-16 | 2013-09-16 | A kind of velocity sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103454441A true CN103454441A (en) | 2013-12-18 |
| CN103454441B CN103454441B (en) | 2016-08-17 |
Family
ID=49737040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310419313.6A Active CN103454441B (en) | 2013-09-16 | 2013-09-16 | A kind of velocity sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103454441B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105934608A (en) * | 2014-03-28 | 2016-09-07 | 本田技研工业株式会社 | Sensor mounting section structure for transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201965140U (en) * | 2011-01-10 | 2011-09-07 | 力帆实业(集团)股份有限公司 | Rotating speed sensor for gearbox |
| CN202975029U (en) * | 2012-11-30 | 2013-06-05 | 上海力申科学仪器有限公司 | Wind speed sensor fixation and connection structure |
| CN103163312A (en) * | 2011-12-15 | 2013-06-19 | 西安民生电热技术工程有限责任公司 | Car wheel speed sensor good in sealing property |
| CN203432989U (en) * | 2013-09-16 | 2014-02-12 | 盛瑞传动股份有限公司 | Velocity sensor |
-
2013
- 2013-09-16 CN CN201310419313.6A patent/CN103454441B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201965140U (en) * | 2011-01-10 | 2011-09-07 | 力帆实业(集团)股份有限公司 | Rotating speed sensor for gearbox |
| CN103163312A (en) * | 2011-12-15 | 2013-06-19 | 西安民生电热技术工程有限责任公司 | Car wheel speed sensor good in sealing property |
| CN202975029U (en) * | 2012-11-30 | 2013-06-05 | 上海力申科学仪器有限公司 | Wind speed sensor fixation and connection structure |
| CN203432989U (en) * | 2013-09-16 | 2014-02-12 | 盛瑞传动股份有限公司 | Velocity sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105934608A (en) * | 2014-03-28 | 2016-09-07 | 本田技研工业株式会社 | Sensor mounting section structure for transmission |
| CN105934608B (en) * | 2014-03-28 | 2018-06-29 | 本田技研工业株式会社 | The sensor mount construction of speed changer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103454441B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103481728A (en) | Novel intelligent hub bearing unit | |
| CN203432989U (en) | Velocity sensor | |
| CN103454441A (en) | Speed sensor | |
| CN101644300B (en) | Sealed universal shaft | |
| CN204061795U (en) | Loader-digger hydraulic differential is locked | |
| CN108167218A (en) | A kind of dust-proof double-row angular contact bal bearing of water pump high load | |
| CN105179646B (en) | Effective powerful type wire drawing decelerator | |
| CN205371582U (en) | Spacing antifriction structure of axial | |
| CN105465338A (en) | Axial-limiting antifriction structure | |
| CN102829164B (en) | A kind of transmission device | |
| CN101988571A (en) | Gearing with an oil scraper | |
| CN205278129U (en) | Encoder connector | |
| CN205047803U (en) | A gear that is used for tape drum shape tooth coupling of high -speed railway vehicle | |
| CN201461765U (en) | Double-seven-raceway constant velocity universal joint transmission shaft assembly | |
| CN202997783U (en) | Sand-preventing ventilation breather of motor transmission end cover, and transmission end cover of locomotive motor | |
| CN203516765U (en) | Jamming-preventing butterfly valve special for gas | |
| CN202992527U (en) | Flywheel casing for agricultural machines | |
| CN203528196U (en) | Novel intelligent wheel hub bearing unit | |
| CN105090457A (en) | Sealing mechanism for reduction gearbox | |
| CN205936855U (en) | Electronic throttle's canceling release mechanical system | |
| CN103671872B (en) | A kind of electric control mechanical shift actuator of electric vehicle | |
| CN201757138U (en) | Universal joint with high temperature resistance | |
| CN201636326U (en) | Centrifugal lossless sealing structure | |
| CN205592365U (en) | A gear reducer for car slows down | |
| CN206419467U (en) | A kind of main reducing gear power intake structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |