CN203743401U - Oil pressure sensor for transmission - Google Patents
Oil pressure sensor for transmission Download PDFInfo
- Publication number
- CN203743401U CN203743401U CN201320762179.5U CN201320762179U CN203743401U CN 203743401 U CN203743401 U CN 203743401U CN 201320762179 U CN201320762179 U CN 201320762179U CN 203743401 U CN203743401 U CN 203743401U
- Authority
- CN
- China
- Prior art keywords
- pressure sensor
- oil pressure
- chip
- pressure chip
- ring
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title abstract description 8
- 239000004677 Nylon Substances 0.000 claims abstract description 15
- 229920001778 nylon Polymers 0.000 claims abstract description 15
- 238000002955 isolation Methods 0.000 claims abstract description 14
- 238000005461 lubrication Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 8
- 239000003921 oil Substances 0.000 abstract 3
- 230000003139 buffering effect Effects 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to an oil pressure sensor for a transmission. The oil pressure sensor comprises a casing and a pressure chip, wherein the upper end of the casing is connected with the connector of a connector assembly; the pressure chip is arranged in a cavity of the casing; one side of the pressure chip is communicated with lubricating oil in the transmission, and the other side thereof is electrically connected with the connector of the connector assembly; the casing comprises a lower casing body; the outer side of the bottom of the lower casing body is connected with a connector part; the connector part is in threaded tight fitting with the box body of the transmission; an O-shaped seal pad is arranged between the oil pressure sensor and the box body of the transmission, and the seal property is good; the pressure chip is fixed in the casing through a clamp ring and a positioning part; an isolation nylon ring is arranged between the pressure chip and the clamp ring, so that the short circuit and other problems are solved, and the buffering function is achieved; after the clamp ring is tightened up, a gap is formed between the clamp ring and the isolation nylon ring, and the pressure chip can independently release stress generated by expansion caused by heat and contraction caused by cold; a seal ring is arranged between the pressure chip and a supporting part, so that the sealing performance is excellent, the reliability is high, and the servicelife is long.
Description
Technical field
The utility model relates to a kind of pressure transducer, be applicable to measure the oil pressure of closed box inner high speed working fluid oil, be particularly useful for measuring the oil pressure of automatic transmission fluid (ATF oil), specifically, relate to a kind of speed changer oil pressure sensor, belong to field of mechanical technique.
Background technique
Oil pressure sensor is mounted in a kind of pressure transducer on speed changer, be mainly used in automatic gearbox control system, the oil pressure information that automatic gearbox control system provides by oil pressure sensor is implemented accurate control, oil pressure sensor is one of most important observing and controlling link in automatic transmission control system, and whether the measurement of oil pressure sensor has accurately determined reliability, the Security of automatic transmission and the smoothness travelling.
The gear of speed changer inner high speed rotation needs oil lubrication, and mission case inside has been full of lubricant oil, and oil pressure sensor and mission case contact position need good sealing to avoid the leakage of oil of casing.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of speed changer oil pressure sensor, described oil pressure sensor and mission case contact position good seal, and oil pressure sensor measurement is accurate, sensitive, long service life, reliable working performance.
For solving above technical problem, the utility model is by the following technical solutions: a kind of speed changer oil pressure sensor, comprise housing and pressure chip, the upper end of housing is connected with connector assembly interface, pressure chip is arranged in the cavity of housing, one side of pressure chip is communicated with speed changer internal lubrication oil, the opposite side of pressure chip is electrically connected to connector assembly interface, it is characterized in that: described housing comprises lower shell body body, the bottom outside of lower shell body body is connected with joining part, and the periphery of joining part is provided with interface thread;
Between described joining part and lower shell body body, be provided with O type ring recess.
Adopt this technological scheme, oil pressure sensor is connected with mission case thread seal, and between oil pressure sensor and mission case, be provided with O type circle sealing gasket, oil pressure sensor and mission case contact position favorable sealing property, effectively avoided the generation of oil leakage phenomenon.
An optimized project, is provided with hold-down ring between described pressure chip outside and the inwall of lower shell body body;
Between the inside seal face of described hold-down ring and the upper-end surface of pressure chip, be provided with isolation nylon ring.
Adopt this technological scheme; isolation nylon ring has guaranteed that the lead-in wire of pressure chip inside, pin can not touch the inner side of hold-down ring; avoid the quality problems such as short circuit; while impacting when being under pressure; isolation nylon ring can also play buffer function; the impact force that compensator or trimmer pressure chip is subject to, protects pressure chip, has improved working life and the reliability of oil pressure sensor.
Another kind of optimized project, after described hold-down ring is tightened, has gap between the inner seal face of hold-down ring and isolation nylon ring upper-end surface.
Adopt this technological scheme, when frequent variations appears in temperature, pressure chip can independently discharge the stress that expands with heat and contract with cold and produce, thereby has guaranteed that accuracy and the reliability of oil pressure sensor detection data are high, long service life.
Another optimized project, the bottom inside of described lower shell body body is provided with positioning part;
Described pressure chip is arranged between positioning part and hold-down ring.
Adopt this technological scheme to fix pressure chip, the build-up of pressure chip position while impacting of avoiding being under pressure moves.
Further optimized project, described positioning part is connected with supporting portion, and the diameter of supporting portion is less than the diameter of positioning part;
Between the inner side of described pressure chip and the outer wall of supporting portion, be provided with seal ring.
Adopt this technological scheme, further improved the sealing of oil pressure sensor, avoid the lubricant oil in mission case to reveal by the housing of oil pressure sensor.
Optimized project further, the bottom centre of described lower shell body body is provided with tracting pressuring hole;
Described tracting pressuring hole runs through joining part, positioning part and supporting portion.
Adopt this technological scheme, the lubricant oil of speed changer inside enters oil pressure sensor through tracting pressuring hole, by pressure signal transmission to pressure chip.
Further optimized project, is connected with lighting outlet between described pressure chip and connector assembly interface.
Adopt this technological scheme, pressure chip transfers to connector assembly interface by the fuel injection pressure signal collecting.
Optimized project further, described oil pressure sensor is electrically connected with automobile gearbox electronic control unit TCU, and automobile gearbox electronic control unit TCU comprises modulus converter A/D;
The power end Vcc of described oil pressure sensor is connected with the power end Vcc of modulus converter A/D, the grounding end GND of oil pressure sensor is electrically connected to modulus converter A/D, the feedback voltage end Vout of oil pressure sensor is electrically connected to modulus converter A/D, between the feedback voltage end Vout of the grounding end GND of oil pressure sensor and oil pressure sensor, is connected with resistance R.
The utility model adopts after above technological scheme, compared with prior art, has the following advantages: oil pressure sensor is connected with mission case thread seal, and between oil pressure sensor and mission case, is provided with O type circle sealing gasket, good seal performance; Pressure chip is fixed in the cavity of oil pressure sensor housing by hold-down ring and positioning part, between pressure chip and hold-down ring, be provided with isolation nylon ring, both avoid the quality problems such as short circuit, played again buffer function, improved working life and the reliability of oil pressure sensor; After hold-down ring is tightened, between hold-down ring and isolation nylon ring, have gap, pressure chip can independently discharge the stress that expands with heat and contract with cold and produce, thereby has guaranteed that accuracy and the reliability of oil pressure sensor detection data are high, long service life; Between pressure chip and supporting portion, be provided with seal ring, further improved sealing.
Below in conjunction with drawings and Examples, the utility model is elaborated.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of oil pressure sensor in the utility model embodiment;
Accompanying drawing 2 is cross-sectional view of oil pressure sensor in the utility model embodiment;
Accompanying drawing 3 is structural representations of lower shell body in the utility model embodiment;
Accompanying drawing 4 is fundamental diagrams of oil pressure sensor in the utility model embodiment;
In figure,
1-interface thread; 2-tracting pressuring hole; 3-lower shell body; 4-positioning part; 5-pressure chip; 6-supporting portion; 7-seal ring; 8-hold-down ring; 9-isolates nylon ring; 10-lighting outlet; 11-upper shell; 12-connector assembly interface; 13-O type circle, 14-O type ring recess, 15-lower shell body body, 16-joining part.
Embodiment
Embodiment, as shown in Figure 1, Figure 2 and Figure 3, a kind of speed changer oil pressure sensor, comprise housing and pressure chip 5, the upper end of housing is connected with connector assembly interface 12, between pressure chip 5 and connector assembly interface 12, be connected with lighting outlet 10, pressure chip 5 transfers to connector assembly interface 12 by lighting outlet 10 by the oil pressure of mission case internal lubrication oil.
Described housing comprises lower shell body 3 and the upper shell 11 being fixedly connected with, and upper shell 11 is arranged on the upper end of lower shell body 3, and connector assembly interface 12 is arranged on the upper end of upper shell 11, and pressure chip 5 is arranged in the cavity between lower shell body 3 and upper shell 11.
Described lower shell body 3 comprises lower shell body body 15, described lower shell body body 15 is the tubular of an end opening, the bottom outside of lower shell body body 15 is connected with joining part 16, the periphery of joining part 16 is provided with interface thread 1, interface thread 1 is in order to be connected with mission case, between the bottom of lower shell body body 15 and joining part 16, be provided with O type ring recess 14, described O type ring recess 14 is for placing O type circle 13, improved the sealing that oil pressure sensor is connected with mission case, place the oil leakage of speed changer inside, the bottom inside of lower shell body body 15 is provided with positioning part 4, positioning part 4 is connected with supporting portion 6, the diameter of described supporting portion 6 is less than the diameter of positioning part 4, the bottom centre of lower shell body body 15 is provided with tracting pressuring hole 2, described tracting pressuring hole 2 runs through joining part 16, positioning part 4 and supporting portion 6.
Described pressure chip 5 is sleeved on the periphery of positioning part 4, between the outer wall of the inner side of pressure chip 5 and supporting portion 6, be provided with seal ring 7, seal ring 7 is positioned at the cavity of pressure chip 5, between the inwall of the outside of pressure chip 5 and lower shell body body 15, be provided with hold-down ring 8, hold-down ring 8 is for compaction pressure chip 5, between the inside seal face of hold-down ring 8 and the upper-end surface of pressure chip 5, be provided with isolation nylon ring 9, tighten after hold-down ring 8, between the inner seal face of hold-down ring 8 and isolation nylon ring 9 upper-end surfaces, there is gap, for when there is frequent variations in temperature, pressure chip 5 independently discharges the stress that expands with heat and contract with cold and produce, thereby the accuracy and the reliability that have guaranteed oil pressure sensor detection data are high, long service life, simultaneously, isolation nylon ring 9 has also guaranteed the lead-in wire of pressure chip 5 inside, pin can not touch the inner side of hold-down ring 8, avoid the quality problems such as short circuit, while impacting when being under pressure, isolation nylon ring 9 can also play buffer function, the impact force that compensator or trimmer pressure chip 5 is subject to, protection pressure chip 5, working life and the reliability of oil pressure sensor have further been improved.
As described in Figure 4, oil pressure sensor APT(Automotive Pressure Transducer, abbreviation APT) be electrically connected with automobile gearbox electronic control unit TCU, automobile gearbox electronic control unit TCU is used to oil pressure sensor APT that power supply is provided and accepts feedback voltage, described automobile gearbox electronic control unit TCU comprises modulus converter A/D, modulus converter A/D is for converting analogue signal to digital signal, so that automobile gearbox electronic control unit TCU can identify and process the signal receiving, the power end Vcc of oil pressure sensor APT is connected with the power end Vcc of modulus converter A/D, the grounding end GND of oil pressure sensor APT is electrically connected to modulus converter A/D, the feedback voltage end Vout of oil pressure sensor APT is electrically connected to modulus converter A/D, between the feedback voltage end Vout of the grounding end GND of oil pressure sensor APT and oil pressure sensor APT, be connected with resistance R.
The above is giving an example of the utility model preferred forms, and the part of wherein not addressing is in detail those of ordinary skills' common practise.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation carrying out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.
Claims (7)
1. a speed changer oil pressure sensor, comprise housing and pressure chip (5), the upper end of housing is connected with connector assembly interface (12), pressure chip (5) is arranged in the cavity of housing, one side of pressure chip (5) is communicated with speed changer internal lubrication oil, the opposite side of pressure chip (5) is electrically connected to connector assembly interface (12), it is characterized in that: described housing comprises lower shell body body (15), the bottom outside of lower shell body body (15) is connected with joining part (16), and the periphery of joining part (16) is provided with interface thread (1);
Between described joining part (16) and lower shell body body (15), be provided with O type ring recess (14);
Described oil pressure sensor is electrically connected with automobile gearbox electronic control unit TCU, and automobile gearbox electronic control unit TCU comprises modulus converter A/D;
The power end Vcc of described oil pressure sensor is connected with the power end Vcc of modulus converter A/D, the grounding end GND of oil pressure sensor is electrically connected to modulus converter A/D, the feedback voltage end Vout of oil pressure sensor is electrically connected to modulus converter A/D, between the feedback voltage end Vout of the grounding end GND of oil pressure sensor and oil pressure sensor, is connected with resistance R.
2. a kind of speed changer oil pressure sensor as claimed in claim 1, is characterized in that: between described pressure chip (5) outside and the inwall of lower shell body body (15), be provided with hold-down ring (8);
Between the upper-end surface of the inside seal face of described hold-down ring (8) and pressure chip (5), be provided with isolation nylon ring (9).
3. a kind of speed changer oil pressure sensor as claimed in claim 2, is characterized in that: after described hold-down ring (8) is tightened, between the inner seal face of hold-down ring (8) and isolation nylon ring (9) upper-end surface, have gap.
4. a kind of speed changer oil pressure sensor as claimed in claim 3, is characterized in that: the bottom inside of described lower shell body body (15) is provided with positioning part (4);
Described pressure chip (5) is arranged between positioning part (4) and hold-down ring (8).
5. a kind of speed changer oil pressure sensor as claimed in claim 4, is characterized in that: described positioning part (4) are connected with supporting portion (6), and the diameter of supporting portion (6) is less than the diameter of positioning part (4);
Between the outer wall of the inner side of described pressure chip (5) and supporting portion (6), be provided with seal ring (7).
6. a kind of speed changer oil pressure sensor as claimed in claim 5, is characterized in that: the bottom centre of described lower shell body body (15) is provided with tracting pressuring hole (2);
Described tracting pressuring hole (2) runs through joining part (16), positioning part (4) and supporting portion (6).
7. as a kind of speed changer oil pressure sensor of claim 1-6 as described in one of them, it is characterized in that: between described pressure chip (5) and connector assembly interface (12), be connected with lighting outlet (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762179.5U CN203743401U (en) | 2013-11-28 | 2013-11-28 | Oil pressure sensor for transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762179.5U CN203743401U (en) | 2013-11-28 | 2013-11-28 | Oil pressure sensor for transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743401U true CN203743401U (en) | 2014-07-30 |
Family
ID=51343202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320762179.5U Expired - Lifetime CN203743401U (en) | 2013-11-28 | 2013-11-28 | Oil pressure sensor for transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615530A (en) * | 2013-11-28 | 2014-03-05 | 盛瑞传动股份有限公司 | Automotive pressure transducer used for transmission |
-
2013
- 2013-11-28 CN CN201320762179.5U patent/CN203743401U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615530A (en) * | 2013-11-28 | 2014-03-05 | 盛瑞传动股份有限公司 | Automotive pressure transducer used for transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |