CN201964992U - ABS (antilock brake system) pressure sensor - Google Patents
ABS (antilock brake system) pressure sensor Download PDFInfo
- Publication number
- CN201964992U CN201964992U CN2011200487495U CN201120048749U CN201964992U CN 201964992 U CN201964992 U CN 201964992U CN 2011200487495 U CN2011200487495 U CN 2011200487495U CN 201120048749 U CN201120048749 U CN 201120048749U CN 201964992 U CN201964992 U CN 201964992U
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- China
- Prior art keywords
- pressure sensor
- locating
- abs
- contact pin
- sensor chip
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- 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
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Abstract
The utility model discloses an ABS (antilock brake system) pressure sensor comprising a sensor chip; and the sensor chip is connected with a contact pin which comprises a shaft sleeve, two locating columns are arranged in the shaft sleeve, permanent magnets are respectively arranged on the opposite columns ends of the locating columns in a sheathed way, the direction of magnetic poles of the permanent magnets are designed as the same poles to be opposite; a locating bolt is arranged on each locating column, a locating plate is correspondingly arranged on the shaft sleeve and is used for limiting the displacement track of the locating column; and the contact pin is connected with the sensor chip by the locating columns. In the ABS pressure sensor, the permanent magnets are used for replacing springs, so that the ABS pressure sensor has stable sensitivity, can not lose efficacy for long-time use, and has better reliability, the performances of the ABS pressure sensor is effectively improved, and the durability is enhanced.
Description
Technical field
The utility model relates to a kind of abs pressure sensor, relates 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.
The utility model content
Defective in view of above-mentioned prior art existence, the purpose of this utility model 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.
The purpose of this utility model 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 utility model 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, embodiment of the present utility model is described in further detail, so that technical solutions of the utility model are 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 utility model embodiment;
Fig. 3 is the cut-open view of Fig. 2 of the utility model embodiment in the A-A direction.
Embodiment
A kind of abs pressure sensor of the present utility model, 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 utility model 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 utility model still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within the protection domain of the present utility model.
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 |
|---|---|---|---|
| CN2011200487495U CN201964992U (en) | 2011-02-25 | 2011-02-25 | ABS (antilock brake system) pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200487495U CN201964992U (en) | 2011-02-25 | 2011-02-25 | ABS (antilock brake system) pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201964992U true CN201964992U (en) | 2011-09-07 |
Family
ID=44527537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200487495U Expired - Lifetime CN201964992U (en) | 2011-02-25 | 2011-02-25 | ABS (antilock brake system) pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201964992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147310A (en) * | 2011-02-25 | 2011-08-10 | 哈姆林电子(苏州)有限公司 | Anti-lock brake system (ABS) pressure sensor |
| CN110146216A (en) * | 2019-05-27 | 2019-08-20 | 广州敏华仪器仪表有限公司 | Pressure transmitter |
-
2011
- 2011-02-25 CN CN2011200487495U patent/CN201964992U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147310A (en) * | 2011-02-25 | 2011-08-10 | 哈姆林电子(苏州)有限公司 | Anti-lock brake system (ABS) pressure sensor |
| CN102147310B (en) * | 2011-02-25 | 2012-06-27 | 哈姆林电子(苏州)有限公司 | Anti-lock brake system (ABS) pressure sensor |
| CN110146216A (en) * | 2019-05-27 | 2019-08-20 | 广州敏华仪器仪表有限公司 | Pressure transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20120627 |