CN201681086U

CN201681086U - Active wheel speed sensor

Info

Publication number: CN201681086U
Application number: CN2010201846645U
Authority: CN
Inventors: 万国强; 张鸿; 万国兴
Original assignee: HANGZHOU NANKE AUTO SENSOR CO Ltd
Current assignee: HANGZHOU NANKE AUTO SENSOR CO Ltd
Priority date: 2010-05-11
Filing date: 2010-05-11
Publication date: 2010-12-22
Anticipated expiration: 2020-05-11

Abstract

The utility model relates to a sensor for electronic measurement of automobile wheel speed, especially to an active wheel speed sensor. The sensor includes a cable, a lining, a steel magnet and a chip, the cable is arranged on the right side of the lining, the lower end of the chip is connected with the upper end of the steel magnet, the chip and the steel magnet are arranged inside the left end of the lining, the cable passes through the lining and is connected with the chip, the steel magnet is provided with a chip groove on one side, the lower side of the chip is embedded in the chip groove, and the upper end of the chip is exposed from the lining. The sensor has advantages of simple structure and easy production, and is propitious to locate and package the chip and the steel magnet so as to reduce disability rate.

Description

Active wheel speed sensor

Technical field

The utility model relates to the sensor that a kind of automotive electronics is measured wheel speed, particularly a kind of active wheel speed sensor.

Background technology

At present, at home and abroad on high-grade car and the high-grade truck employed sensor have four types: a, magnetoelectric induction sensor; B, hall sensor; C, eddy current sensor; D, electro-optical pickoff, wherein the most widely used is magnetoelectric induction sensor.This magnetoelectric induction sensor is made up of magnetic block, coil, shielding case and lead-in wire, coil winding is at the outside surface of magnetic block, and place in the shielding case, magnetic block is rectangular parallelepiped or cylindrical bar, its magnetic is arranged on the two ends of bar, there is following shortcoming in it: the one, and institute's induced voltage that obtains is little when the speed of a motor vehicle＜15km/h, is difficult to guarantee the ABS operate as normal, and Hyundai Motor requires speed also to want to guarantee the ABS operate as normal when 2-3km/h; The 2nd, when the speed of a motor vehicle reaches 200km/h when above,, lose signal easily, and produce misoperation because frequency response is low; The 3rd, diamagnetic electrical interference ability.And comprise sensing head, cable, socket and electronic circuit for hall sensor, cable connects as one sensing head, socket, the sensing head top encapsulation has Hall chip and permanent magnet, and existing hall sensor, all there is following shortcoming: the one, chip and permanent magnet encapsulation location difficulty cause product rejection easily; The 2nd, manufacturing process's complexity, manufacturing cost height.

Summary of the invention

The purpose of this utility model is exactly the weak point in the background technology, provides a kind of simple in structure, and in the production run, manufacturing process is few, the simple active wheel speed sensor of manufacture craft.

For achieving the above object, the utility model adopts following technical scheme: active wheel speed sensor, comprise cable, lining, magnet steel and chip, cable is positioned at the lining right side, the chip lower end is connected with the magnet steel upper end and is positioned at lining left end inside, and cable passes lining and is communicated with chip, and described magnet steel one side is provided with the chip groove, the chip downside embeds in the chip groove, and its upside is exposed to outside the lining.

For optimization of the present utility model, the chip stitch of described chip is communicated with cable 5 by electric capacity of voltage regulation.

The utility model is compared with background technology, has simple in structurely, easily manufactured, helps the location encapsulation of chip and magnet steel, thereby reduces scrappage.

Description of drawings

Fig. 1 is the structural representation of active wheel speed sensor.

Fig. 2 is the structural representation of magnet steel.

Fig. 3 is the structural representation that magnet steel is connected with chip.

Embodiment

Embodiment 1: with reference to Fig. 1 ~ 3.Active wheel speed sensor, comprise cable 5, lining 3, magnet steel 2 and chip 1, cable 5 is positioned at lining 3 right sides, chip 1 lower end is connected with magnet steel 2 upper ends and is positioned at lining left end inside, cable 5 passes lining 3 and is communicated with chip 1, described magnet steel 2 one sides are provided with chip groove 2-1, and chip 1 downside embeds in the chip groove 2-1, and its upside is exposed to outside the lining 3.The chip stitch 1-1 of described chip 1 is communicated with cable 5 by electric capacity of voltage regulation 4.

What need understand is: though present embodiment compares detailed explanation to the utility model; but these explanations; just to simple declaration of the present utility model; rather than to restriction of the present utility model; any innovation and creation that do not exceed in the utility model connotation all fall in the protection domain of the present utility model.

Claims

1. active wheel speed sensor, comprise cable (5), lining (3), magnet steel (2) and chip (1), cable (5) is positioned at lining (3) right side, chip (1) lower end and magnet steel (2) upper end is connected and is positioned at lining left end inside, cable (5) passes lining (3) and is communicated with chip (1), it is characterized in that: described magnet steel (2) one sides are provided with chip groove (2-1), and chip (1) downside embeds in the chip groove (2-1), and its upside is exposed to outside the lining (3).

2. active wheel speed sensor according to claim 1 is characterized in that: the chip stitch (1-1) of described chip (1) is communicated with cable (5) by electric capacity of voltage regulation (4).