CN112896312A

CN112896312A - High-precision sensor

Info

Publication number: CN112896312A
Application number: CN202110320126.7A
Authority: CN
Inventors: 朱卫; 赵阳; 江平新
Original assignee: Suzhou Haizhibo Electronic Technology Co ltd
Current assignee: Suzhou Haizhibo Electronic Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-06-04

Abstract

The invention relates to the technical field of sensors, in particular to a high-precision sensor which comprises an upper shell, a lower shell, a PCB (printed circuit board), an induction sheet and a connector, wherein the PCB is fixedly connected with the upper shell, a chip and a coil are fixedly mounted on the PCB, the chip is positioned at one end of the PCB, the coil is arranged along the extending direction of the PCB, the lower shell is fixedly connected with the upper shell, a group of slide rails are fixedly arranged on the lower surface of the lower shell, the induction sheet is injected into the connector, and the connector is clamped on the slide rails. The device provided by the invention has the advantages of simple structure, convenience in installation, small volume, low cost, wide sensing range and high precision.

Description

High-precision sensor

Technical Field

The invention relates to the technical field of sensors, in particular to a high-precision sensor.

Background

When car rear-wheel steering system can other narrow and small space's a steering system need install the sensor, because traditional sensor all is with casing steering system's fixed part on, in the casing was installed to the PCB circuit board, PCB circuit board mid-mounting chip, then magnetite fixed mounting is on rotating parts and slide along the casing. The displacement of the steering system is detected by the chip sensing the movement of the magnet. The sensor with the structure can sense only when the magnet corresponds to the chip, when the sensor moves to a space outside the chip, the sensing sensitivity of the sensor is quickly attenuated, the signal of the sensor is possibly distorted, and the cost of the magnet is inevitably increased by increasing the sensing strength.

Disclosure of Invention

The invention aims to solve the technical problem of providing a high-precision sensor which has the advantages of simple structure, convenient installation, small volume, low cost, wide sensing range and high precision.

The invention is realized by the following technical scheme:

the utility model provides a high accuracy sensor, its includes casing, lower casing, PCB circuit board, response piece and connector, PCB circuit board and last casing fixed connection, fixed mounting have chip and coil on the PCB circuit board, the chip is located the one end of PCB circuit board, and the coil is arranged along PCB circuit board extending direction, casing and last casing fixed connection down, the lower fixed surface of casing is equipped with a set of slide rail down, the response piece is moulded plastics in the connector, the connector clamps on the slide rail.

Further, connector integrated into one piece just includes roof and two jack catchs, the response piece is moulded plastics in the roof, and the roof clamps on the slide rail.

Preferably, the induction sheet is a sheet-shaped structure made of metal materials.

Preferably, the upper shell and the lower shell are welded by laser.

Preferably, the PCB is fixedly connected with the upper shell through hot riveting.

Furthermore, limiting plates are clamped at two ends of the sliding rail.

Furthermore, the outer edges of the two ends of the upper shell are respectively integrally formed with extending parts, and the extending parts respectively extend towards different directions and are provided with mounting holes.

Advantageous effects of the invention

The high-precision sensor protected by the invention has the following advantages:

1. the structure is simple, and the installation is convenient;

2. the volume is small, and the cost is low;

3. the induction range is wide, and the detection precision is high.

Drawings

FIG. 1 is a top exploded view of the present invention;

FIG. 2 is a bottom exploded view of the present invention;

FIG. 3 is a schematic view of the assembly structure of the present invention;

in the figure, 1, an upper shell, 2, an extension part, 3, a mounting hole, 4, a PCB (printed Circuit Board), 5, a lower shell, 6, a limiting plate, 7, an induction sheet, 8, a top plate, 9, a clamping jaw, 10, a coil, 11, a chip, 12, a sliding rail and 13 are connectors.

Detailed Description

The utility model provides a high accuracy sensor, its includes casing 1, casing 5, PCB circuit board 4, response piece 7 and connector 13 down, PCB circuit board and last casing fixed connection, fixed mounting have chip 11 and coil 10 on the PCB circuit board, the chip is located the one end of PCB circuit board, and the coil is arranged along PCB circuit board extending direction, casing and last casing fixed connection down, the lower fixed surface of casing is equipped with a set of slide rail 12 down, the response piece is moulded plastics in the connector, the connector clamps on the slide rail.

Further, connector integrated into one piece just includes roof 8 and two jack catchs 9, the response piece is moulded plastics in the roof, and the roof clamps on the slide rail, preparation simple to operate, and the structure is reliable, and the volume is littleer, is adapted to narrow and small spaces such as automobile steering system, and the jack catch card drives the response piece and removes together on the steering system rotating member.

Optimally, the induction sheet is of a sheet structure made of metal materials, and is convenient to manufacture and install, small in size and low in cost.

Preferably, the upper shell and the lower shell are welded by laser.

Furthermore, limiting plates 6 are clamped at the two ends of the slide rail, so that the induction sheets are prevented from sliding out of the two ends of the slide rail.

Furthermore, the outer edges of the two ends of the upper shell are respectively provided with the extending parts 2 which extend towards different directions and are provided with the mounting holes 3, the upper shell and the fixed part of the steering system are conveniently fixedly connected with each other through bolts and the like at the mounting holes, and the extending parts extend towards different directions respectively, so that the size of the shell is reduced, and the installation is stable.

When the high-precision sensor protected by the invention is applied to an automobile steering system, the upper shell is connected with a fixed part of the automobile steering system, and the jaws of the connector are clamped on a rotating part of the automobile steering system, so that the high-precision sensor can be applied to detection of rotating systems in other fields.

Because the form of adopting coil and response piece has not only reduced the volume of sensor, be adapted to more and do benefit to the narrow and small space such as car rear wheel, and the cost is reduced, simultaneously because the coil arranges along PCB circuit board extending direction, the chip is located the one end of PCB circuit board, and the response piece is along with the removal of a steering system rotating part, all the time in the response scope of coil, and the response scope is bigger, and the decay can not take place for the inductive signal, and the precision of detection is higher.

In conclusion, the high-precision sensor protected by the invention has the advantages of simple structure, convenience in installation, small size, low cost, wide sensing range and high precision.

Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high accuracy sensor, its characterized in that, includes casing, lower casing, PCB circuit board, response piece and connector, PCB circuit board and last casing fixed connection, fixed mounting have chip and coil on the PCB circuit board, the chip is located the one end of PCB circuit board, and the coil is arranged along PCB circuit board extending direction, casing and last casing fixed connection down, the lower fixed surface of casing is equipped with a set of slide rail down, the response piece is moulded plastics in the connector, the connector clamps on the slide rail.

2. A high accuracy sensor according to claim 1, wherein the connecting head is integrally formed and comprises a top plate and two jaws, the sensing piece is injection molded in the top plate, and the top plate is clamped on the slide rail.

3. A high accuracy sensor according to claim 1, wherein said sensing plate is a thin plate-like structure made of metal material.

4. A high accuracy sensor according to claim 1, wherein said upper and lower housings are laser welded together.

5. A high accuracy sensor according to claim 1, wherein the PCB circuit board is fixedly connected to the upper housing by heat staking.

6. The high-precision sensor according to claim 1, wherein the two ends of the slide rail are clamped with limiting plates.

7. A high accuracy sensor according to claim 1, wherein the outer edges of the two ends of the upper housing are integrally formed with extension portions, and the extension portions extend in different directions and are provided with mounting holes.