CN102147310A - Anti-lock brake system (ABS) pressure sensor - Google Patents
Anti-lock brake system (ABS) pressure sensor Download PDFInfo
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- CN102147310A CN102147310A CN2011100463940A CN201110046394A CN102147310A CN 102147310 A CN102147310 A CN 102147310A CN 2011100463940 A CN2011100463940 A CN 2011100463940A CN 201110046394 A CN201110046394 A CN 201110046394A CN 102147310 A CN102147310 A CN 102147310A
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- contact pin
- pressure sensor
- abs
- sensor chip
- locating
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Abstract
The invention discloses an anti-lock brake system (ABS) pressure sensor. The ABS pressure sensor comprises a sensor chip. The sensor chip is connected with a contact pin. The contact pin comprises a shaft sleeve. Two locating posts are arranged in the shaft sleeve. Permanent magnets are respectively sleeved on the opposite post heads of the locating posts. The same magnetic poles of the permanent magnets are opposite. Locating bolts are arranged on the locating posts. Corresponding locating plates are arranged on the shaft sleeve and used for limiting the displacement tracks of the locating posts. The contact pin is connected with the sensor chip through the locating posts. By using the permanent magnets to replace springs, the ABS pressure sensor has stable sensitivity, still works normally after a long-time use, has relatively good reliability and improves performance and durability effectively.
Description
Technical field
The present invention relates to a kind of abs pressure sensor, relate in particular to the contact pin that is used to connect pressure transducer in a kind of abs pressure sensor.
Background technology
Anti-lock braking system in automobiles (Anti-lock Brake System, hereinafter to be referred as ABS) be to regulate the brake system of car of damping force according to the attachment characteristic on pairing tire-ground under the different slip rates, it makes brake wheel make full use of ground attaching coefficient and obtains higher ground damping force and side force, shorten the braking distance of automobile, obtain directional control stability preferably.This technology is one of most important active safety technology of automobile industry having brought into play vital role aspect raising automotive safety, minimizing causality loss and the raising automobilism economy.At present, adopts pressure sensor comes gaging pressure in the ABS brake system, in U.S. Pat 6789415B1, brake appts adopts the spring contact pin to connect pressure transducer and electronic control component, described pressure transducer is used to measure brake pressure, and described electronic control component is used for estimating to be measured numerical value and generate control signal.The structure of described spring contact pin as shown in Figure 1, spring contact pin 36 outer cover are provided with axle sleeve 41, axial direction in the axle sleeve 41 is provided with and passes through spiral compression spring 43 mutual repulsions between 42, two emboluses 42 of two emboluses, and blocking piece 44 and 45 is two corresponding position limiting structures.Spring contact pin 36 is to adopt the middle transition part of spiral compression spring 43 as strength transmission, because spring has instability, after using for a long time, the elastic parameter of spring can change, and therefore will influence the result that abs pressure measures.
Summary of the invention
Defective in view of above-mentioned prior art existence, the objective of the invention is to propose a kind of improved abs pressure sensor, with the middle transition spring in the permanent magnet replacement contact pin, because each performance parameter of permanent magnet is more stable, after long-term the use, can not lose efficacy, good reliability possesses stable sensitivity simultaneously.
Purpose of the present invention will be achieved by the following technical programs:
A kind of abs pressure sensor comprises sensor chip, and described sensor chip is connected with contact pin, described contact pin comprises an axle sleeve, be provided with 2 reference columns in the described axle sleeve, be arranged with permanent magnet respectively on the relative column cap of described reference column, and the magnetic pole of permanent magnet direction is set is that homopolarity is relative; Described reference column is provided with pilot pin, also is provided with corresponding location-plate on the described axle sleeve, is used to limit the deformation trace of reference column; Described contact pin is connected with sensor chip by reference column.
Outstanding effect of the present invention is: replace the middle transition spring with permanent magnet, because each performance parameter of permanent magnet is more stable, can not lose efficacy after long-term the use, possesses stable sensitivity, reliability is better, effectively improves the performance of abs pressure sensor, improves durability.
Following constipation closes the embodiment accompanying drawing, the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is easier to understand, grasp.
Description of drawings
Fig. 1 is the structural representation of the spring contact pin of prior art;
Fig. 2 is the structural representation of the embodiment of the invention;
Fig. 3 is the cut-open view of Fig. 2 of the embodiment of the invention in the A-A direction.
Embodiment
A kind of abs pressure sensor of the present invention, as shown in Figures 2 and 3, comprise sensor chip 1, described sensor chip 1 is connected with contact pin, and described contact pin comprises an axle sleeve 2, is provided with 2 reference columns 3 in the described axle sleeve 2, be arranged with permanent magnet 4 respectively on the relative column cap of described reference column 3, and it is that homopolarity is relative that the magnetic pole of permanent magnet 4 is provided with direction, and the space between the permanent magnet 4 is magnetic buffering district 7, and the magnetic line of force 8 in the magnetic force buffer area 7 is homopolar-repulsions; Described reference column 3 is provided with pilot pin 5, also is provided with corresponding location-plate 6 on the described axle sleeve, is used to limit the deformation trace of reference column 3; Described contact pin is connected with sensor chip 1 by reference column 3.
The middle transition spring that the present invention replaces in the original contact pin with permanent magnet 4, permanent magnet 4 homopolarities are relative, and as the stressed buffer zone of system, brake pressure is delivered to the cell pressure chip by magnetic line of force pressure, the induction brake pressure.Replace the middle transition spring with permanent magnet, because each performance parameter of permanent magnet is more stable, can not lose efficacy after long-term the use, possess stable sensitivity, reliability is better, effectively improves the performance of abs pressure sensor, improves durability.
The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within protection scope of the present invention.
Claims (1)
1. abs pressure sensor, comprise sensor chip, described sensor chip is connected with contact pin, it is characterized in that: described contact pin comprises an axle sleeve, be provided with 2 reference columns in the described axle sleeve, be arranged with permanent magnet respectively on the relative column cap of described reference column, and the magnetic pole of permanent magnet direction is set is that homopolarity is relative; Described reference column is provided with pilot pin, also is provided with corresponding location-plate on the described axle sleeve, is used to limit the deformation trace of reference column; Described contact pin is connected with sensor chip by reference column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100463940A CN102147310B (en) | 2011-02-25 | 2011-02-25 | Anti-lock brake system (ABS) pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100463940A CN102147310B (en) | 2011-02-25 | 2011-02-25 | Anti-lock brake system (ABS) pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102147310A true CN102147310A (en) | 2011-08-10 |
| CN102147310B CN102147310B (en) | 2012-06-27 |
Family
ID=44421687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100463940A Expired - Fee Related CN102147310B (en) | 2011-02-25 | 2011-02-25 | Anti-lock brake system (ABS) pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102147310B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6789415B1 (en) * | 1999-04-21 | 2004-09-14 | Robert Bosch Gmbh | Brake device for vehicle brake systems |
| CN200962063Y (en) * | 2006-08-31 | 2007-10-17 | 周杭海 | Pressure sensor |
| CN201964992U (en) * | 2011-02-25 | 2011-09-07 | 哈姆林电子(苏州)有限公司 | ABS (antilock brake system) pressure sensor |
-
2011
- 2011-02-25 CN CN2011100463940A patent/CN102147310B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6789415B1 (en) * | 1999-04-21 | 2004-09-14 | Robert Bosch Gmbh | Brake device for vehicle brake systems |
| CN200962063Y (en) * | 2006-08-31 | 2007-10-17 | 周杭海 | Pressure sensor |
| CN201964992U (en) * | 2011-02-25 | 2011-09-07 | 哈姆林电子(苏州)有限公司 | ABS (antilock brake system) pressure sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102147310B (en) | 2012-06-27 |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20180225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |