CN103454441B - A kind of velocity sensor - Google Patents
A kind of velocity sensor Download PDFInfo
- Publication number
- CN103454441B CN103454441B CN201310419313.6A CN201310419313A CN103454441B CN 103454441 B CN103454441 B CN 103454441B CN 201310419313 A CN201310419313 A CN 201310419313A CN 103454441 B CN103454441 B CN 103454441B
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- extension
- connecting shaft
- velocity sensor
- shaft
- sealing ring
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Abstract
The present invention relates to a kind of velocity sensor, including velocity sensor housing, the lower end of velocity sensor housing connects connecting shaft, connecting shaft is provided with two groups of sealing rings, the good airproof performance being connected with case of transmission and sealing reliability vertically high；The lower end of connecting shaft connects extension, it is connected between connecting shaft with extension and has diminished shaft, and extension is the most tapered, the stub end of diminished shaft is connected with connecting shaft, the little head end of diminished shaft is connected with the stub end of extension, described velocity sensor is arranged on speed changer, extension gradually decreases from lower to upper with the fit clearance of sensor mounting hole on case of transmission, can effectively block the oil that high-speed gear operating is splashed, reduce oil impact direct to sealing ring, extend the service life of velocity sensor.
Description
Technical field
The present invention relates to a kind of sensor, it is adaptable to measure the rotating speed of closed box (such as gearbox) internal gear, specifically, relate to a kind of velocity sensor, belong to field of mechanical technique.
Background technology
A kind of speed probe that velocity sensor is mounted on speed changer, it is mainly used in automatic gearbox control system, the gear rotational speed information that automatic gearbox control system Negotiation speed sensor provides implements accurate motion control, velocity sensor is most important observing and controlling link in automatic transmission control system, the whether accurate ride comfort determining the reliability of automatic transmission, security and traveling of measurement of velocity sensor.
In realizing process of the present invention, inventor finds at least to exist in prior art problems with, velocity sensor and case of transmission seal and use single ring structure to seal, and velocity sensor is cylindrical with the connecting shaft of case of transmission, high oil pressure and severe working environment within speed changer easily make sealing ring lose efficacy, causing leakage of oil, the service life of velocity sensor is restricted.
Summary of the invention
The technical problem to be solved in the present invention is for above not enough, it is provided that a kind of velocity sensor, overcomes easy oil leakage in prior art, service life short defect, after using the velocity sensor of the present invention, has good airproof performance, the advantage of length in service life.
For solving above technical problem, the present invention by the following technical solutions: a kind of velocity sensor, including sensor housing, it is characterised in that: the lower end of described sensor housing connects has connecting shaft, connecting shaft to be provided with two groups of sealing rings.
A kind of prioritization scheme, the lower end of described connecting shaft connects extension；
Described extension is tapered, and the stub end of extension is connected with connecting shaft.
Another kind of prioritization scheme, is provided with diminished shaft between described extension and connecting shaft；
The stub end of described diminished shaft connects as one with connecting shaft, and the little head end of diminished shaft connects as one with extension.
Another prioritization scheme, described sealing ring includes the first sealing ring and the second sealing ring；
Described first sealing ring and the second sealing ring being arranged in an axially parallel mode along connecting shaft.
After the present invention uses above technical scheme, compared with prior art, having the advantage that in connecting shaft and be provided with two groups of sealing rings vertically, the good airproof performance being connected with case of transmission and sealing reliability are high；The lower end of connecting shaft connects extension, it is connected between connecting shaft with extension and has diminished shaft, and extension is the most tapered, the stub end of diminished shaft is connected with connecting shaft, the little head end of diminished shaft is connected with the stub end of extension, described velocity sensor is arranged on speed changer, extension gradually decreases from lower to upper with the fit clearance of sensor mounting hole on case of transmission, can effectively block the oil that high-speed gear operating is splashed, reduce oil impact direct to sealing ring, extend the service life of velocity sensor.
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of embodiment of the present invention medium velocity sensor；
Accompanying drawing 2 is the use view of embodiment of the present invention medium velocity sensor；
Accompanying drawing 3 is the enlarged drawing in accompanying drawing 2 at A；
In figure,
1-sensor housing, 2-terminal, 3-fixing hole, 4-the first sealing ring, 5-the second sealing ring, 6-connecting shaft, 7-diminished shaft, 8-extension, 9-case of transmission, 10-sensor mounting hole, 11-bolt.
Detailed description of the invention
nullEmbodiment，As shown in Figure 1，A kind of velocity sensor，Including sensor housing 1，Terminal 2 it is provided with in sensor housing 1，Sensor housing 1 is provided with fixing hole 3，The lower end of sensor housing 1 connects connecting shaft 6，Connecting shaft 6 is provided with two groups of sealing rings，Described sealing ring includes the first sealing ring 4 and the second sealing ring 5，Described first sealing ring 4 and the second sealing ring 5 being arranged in an axially parallel mode along connecting shaft 6，The lower end of connecting shaft 6 connects extension 8，Diminished shaft 7 it is provided with between connecting shaft 6 and extension 8，The stub end of described diminished shaft 7 connects as one with connecting shaft 6，The little head end of diminished shaft 7 connects as one with extension 8，Described extension 8 is tapered，The stub end of extension 8 connects as one with the little head end of diminished shaft 7，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 velocity sensor is fixedly installed on case of transmission 9 by bolt 11, the connecting shaft 6 of velocity sensor is placed in the sensor mounting hole 10 on case of transmission 9, the inner wall sealing with sensor mounting hole 10 respectively of two groups of sealing rings in connecting shaft 6 is connected, even if in the case of one group of sealing ring lost efficacy, another group sealing ring still can play effective sealing function, enhance the sealing that velocity sensor is connected with case of transmission, described extension 8 gradually decreases from lower to upper with the fit clearance of sensor mounting hole 10, can effectively block the oil that high-speed gear operating is splashed, reduce oil impact direct to sealing ring, extend the service life of velocity sensor.
The above is the citing of best mode for carrying out the invention, and the part addressed the most in detail is the common knowledge of those of ordinary skill in the art.Protection scope of the present invention is as the criterion with the content of claim, and the equivalent transformation that any technology based on the present invention is enlightened and carried out, also within protection scope of the present invention.
Claims (1)
- null1. a velocity sensor，Including sensor housing (1)，It is characterized in that: in sensor housing (1), be provided with terminal (2)，Sensor housing (1) is provided with fixing hole (3)，The lower end of sensor housing (1) connects connecting shaft (6)，Connecting shaft (6) is provided with two groups of sealing rings，Described sealing ring includes the first sealing ring (4) and the second sealing ring (5)，Described first sealing ring (4) and the second sealing ring (5) being arranged in an axially parallel mode along connecting shaft (6)，The lower end of connecting shaft (6) connects extension (8)，Diminished shaft (7) it is provided with between connecting shaft (6) and extension (8)，The stub end of described diminished shaft (7) connects as one with connecting shaft (6)，The little head end of diminished shaft (7) connects as one with extension (8)，Described extension (8) is tapered，The stub end of extension (8) connects as one with the little head end of diminished shaft (7)，The diameter of the little head end of extension (8) is slightly less than the diameter of the stub end of extension (8)；Described velocity sensor is fixedly installed on case of transmission (9) by bolt (11), the connecting shaft (6) of velocity sensor is placed in the sensor mounting hole (10) on case of transmission (9) Nei, the inner wall sealing with sensor mounting hole (10) respectively of two groups of sealing rings in connecting shaft (6) is connected, and described extension (8) gradually decreases from lower to upper with the fit clearance of sensor mounting hole (10).
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 CN103454441A (en) | 2013-12-18 |
| CN103454441B true 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 |
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| CN (1) | CN103454441B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (2)
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-09-16 CN CN201310419313.6A patent/CN103454441B/en active Active
Patent Citations (2)
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103454441A (en) | 2013-12-18 |
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