CN212674052U

CN212674052U - Magnetic-sensing angle sensor with high protection level

Info

Publication number: CN212674052U
Application number: CN202021937852.0U
Authority: CN
Inventors: 胡驶宇
Original assignee: Ningbo Beilun Machine Electrics Co ltd
Current assignee: Ningbo Beilun Machine Electrics Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-03-09
Anticipated expiration: 2030-09-08

Abstract

The utility model provides a magnetic-sensing angle sensor that protection level is high, include: the magnetic sensing device comprises a shell and a rotating shaft, wherein a magnetic sensing mechanism is arranged in the shell and comprises a magnetic steel and a PCB (printed Circuit Board), the magnetic steel is fixedly connected with one end of the rotating shaft, a Hall chip is arranged on the PCB, the Hall chip is arranged at one side close to the magnetic steel, a shielding wire is connected to one side of the PCB, a protective adhesive layer for fixing the shielding wire is arranged in the shell, and the protective adhesive layer is arranged at one side of the PCB; and a framework oil seal is arranged in the shell. The magnetic sensitive angle sensor with high protection level has simple structure and low production cost; the protective adhesive layer is arranged, so that the shielding lead on the Hall chip can be fixed, and the protection strength and the anti-interference performance of the product are enhanced; the framework oil seal is arranged in the shell, so that the starting torque and the running torque are increased, the protection grade and the measurement precision are improved, and the service life is long.

Description

Magnetic-sensing angle sensor with high protection level

Technical Field

The utility model relates to a sensor, in particular to magnetic-sensing angle sensor that protection level is high.

Background

The angle sensor is widely applied to corner measurement and control equipment, and the magnetic-sensing angle sensor is mainly used in the measurement and control fields of a rotating position controller of a direct-current brushless motor and an intelligent electric actuating mechanism. The method for measuring the displacement of the object in a non-contact manner has the advantages of high speed, no contact with the measured object and the like. Conventional contact displacement sensors (e.g., potentiometer-type displacement sensors) convert mechanical displacement into a linear or functional resistance or voltage output through a potentiometer element, and potentiometers designed for the purpose of measuring displacement require a certain functional relationship between the change in displacement and the change in resistance. The non-contact displacement sensors are various, such as time grating displacement sensors, displacement differential sensors, capacitive grating displacement sensors, inductive displacement sensors, and the like, which have high accuracy, but also have large volume, complex structure and high cost, and limit conditions are added to the movement speed of the object to be measured, such as stable operation, no sudden change, relatively low speed, and the like.

The magnetic-sensing angle sensor overcomes the technical defects in the existing non-contact displacement sensor, and has the advantages of low power consumption, various and stable output signals, thereby reducing the cost of an angle detection system. It can be conveniently integrated with analog or digital circuitry. The existing magnetic-sensing angle sensors are low in protection level, poor in waterproof and dustproof performance, not suitable for dusty or humid working environments, influence on using effect, cannot guarantee measuring accuracy and short in service life; in order to ensure the measurement accuracy, the inside of the device needs to be cleaned regularly, the operation is troublesome, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the technical problem of providing a magnetic-sensing angle sensor with simple structure, high protection level and low production cost; the protection level is high, the measurement accuracy is high, and the service life is long.

(II) technical scheme

In order to solve the technical problem, the utility model provides a magnetic-sensing angle sensor that protection level is high, include: the magnetic sensing device comprises a shell and a rotating shaft, wherein a magnetic sensing mechanism is arranged in the shell and comprises a magnetic steel and a PCB (printed Circuit Board), the magnetic steel is fixedly connected with one end of the rotating shaft, a Hall chip is arranged on the PCB, the Hall chip is arranged at one side close to the magnetic steel, a shielding wire is connected to one side of the PCB, a protective adhesive layer for fixing the shielding wire is arranged in the shell, and the protective adhesive layer is arranged at one side of the PCB; and a framework oil seal is arranged in the shell, and the framework oil seal is sleeved on the rotating shaft. In the technical scheme, the rotating shaft is made of stainless steel, when the rotating shaft is used, the rotating shaft rotates at a constant speed through a power device to drive the magnetic steel on the rotating shaft to rotate at a constant speed, and the magnetic steel changes the direction of the magnetic field of the magnetic steel in the rotating process, so that the Hall chip outputs a linearly-changed signal through the shielding wire; the Hall chip can realize signal output at any angle within 360 degrees through programming, is in a current output mode, and can realize signal output from 4mA to 20mA and then back to 4mA through programming; due to the non-contact characteristic of the magnetic steel and the Hall chip, the service life of the magnetic steel is ultra-long. According to the magnetic-sensing angle sensor with the high protection level, one end of the rotating shaft is provided with the groove for adjusting the initial zero position of the rotating shaft, so that the adjustment is more convenient and faster; the whole structure is simple, and the production cost is low; the framework oil seal is arranged in the shell, so that the starting torque and the running torque can be increased, the protection grade of a product is improved, the waterproof performance and the dustproof performance are good, and the service life is long; the oil seal cover is used for reinforcing the framework oil seal, so that the structure is more stable, and the measurement precision is improved; the protection glue layer is arranged and used for fixing the shielding wire welded on the Hall chip, so that the fixing is firm, the measurement stability is improved, and the protection strength of the product is enhanced; the ball bearing is arranged in the shell and used for supporting the rotating shaft part, reducing the friction force in the moving process of the rotating shaft, ensuring the rotating precision of the rotating shaft and having good use effect; casing one end is equipped with locating hole and mounting groove, is convenient for use simple to operate with product fixed mounting in required position.

Furthermore, one end of the shell is provided with an oil seal cover, and the framework oil seal is arranged on one side of the oil seal cover; the framework oil seal can increase the starting torque and the running torque, simultaneously improve the protection grade of a product, and has good waterproofness and dust resistance; the oil seal cover is used for reinforcing the framework oil seal, so that the structure is more stable, and the measurement precision is improved.

Furthermore, an end cover is arranged at one end, far away from the oil seal cover, of the shell, and the end cover is made of an aluminum alloy material in the technical scheme, so that internal components can be protected, and the protection grade is improved; the protective adhesive layer is arranged between the end cover and the PCB; the protection glue film is epoxy glue material, the protection glue film is used for fixed welding in shielding wire on the hall chip, it is fixed firm, promote measurement stability to strengthen the protection dynamics of product.

Furthermore, the end cover is provided with an installation guide post for installing the shielding lead, and the shielding lead penetrates through the installation guide post, so that the installation is more stable, the end part of the shielding lead is not easy to bend and damage, and the service life is long; shielding wire one end runs through the protection glue film, shielding wire includes shielding layer and wire, the wire is used for connecting the power and provides signal output, the shielding layer makes output signal be difficult for receiving external factor interference, guarantees the accuracy and the stability of signal, excellent in use effect.

Furthermore, a magnetic steel mounting seat is arranged at one end of the rotating shaft, and the magnetic steel is fixedly mounted on the magnetic steel mounting seat, so that the magnetic steel mounting seat is stable in mounting and the measuring precision is guaranteed.

Furthermore, a ball bearing is arranged in the shell and is arranged on one side of the framework oil seal; the ball bearing is used for supporting the rotating shaft part, reducing the friction force in the moving process of the rotating shaft, ensuring the rotation precision of the rotating shaft and having good use effect.

Furthermore, casing one end is equipped with a plurality of locating holes, the casing annular is equipped with the mounting groove, the locating hole with the mounting groove is convenient for use product fixed mounting in required position, simple to operate.

Furthermore, one end of the rotating shaft is provided with a groove which is in a straight line shape; the groove is used for adjusting the initial zero position of the rotating shaft, and the adjustment is more convenient.

(III) advantageous effects

The magnetic sensitive angle sensor with high protection level has simple structure and low production cost; the framework oil seal is arranged in the shell, so that the starting torque and the running torque can be increased, the protection grade of a product is improved, the waterproof performance and the dustproof performance are good, and the service life is long; the oil seal cover is used for reinforcing the framework oil seal, so that the structure is more stable, and the measurement precision is improved; the protection glue layer is arranged and used for fixing the shielding wire welded on the Hall chip, so that the fixing is firm, the measurement stability is improved, and the protection strength of the product is enhanced; the ball bearing is arranged in the shell and used for supporting the rotating shaft part, reducing the friction force in the moving process of the rotating shaft, ensuring the rotating precision of the rotating shaft and having good use effect; one end of the shell is provided with a positioning hole and a mounting groove, so that the product can be conveniently and fixedly mounted at a required position for use; one end of the rotating shaft is provided with a groove for adjusting the initial zero position of the rotating shaft, so that the adjustment is more convenient.

Drawings

FIG. 1 is a right side view of the magnetic sensitive angle sensor with high protection level of the present invention;

FIG. 2 is a sectional view of the magnetic sensitive angle sensor with high protection level of the present invention;

FIG. 3 is a front view of the magnetic sensitive angle sensor with high protection level of the present invention;

wherein: the structure comprises a shell 1, an end cover 101, a mounting guide post 102, a positioning hole 103, a mounting groove 104, a rotating shaft 2, a magnetic steel mounting seat 201, a groove 202, magnetic steel 3, a PCB 4, a Hall chip 401, a shielding wire 402, a shielding layer 403, a wire 404, a protective adhesive layer 5, a framework oil seal 6, an oil seal cover 601 and a ball bearing 7.

Detailed Description

Referring to fig. 1 to 3, the utility model provides a magnetic sensitive angle sensor with high protection level, which comprises: the magnetic sensor comprises a shell 1 and a rotating shaft 2, wherein a magnetic sensing mechanism is arranged in the shell 1 and comprises a magnetic steel 3 and a PCB circuit board 4, the magnetic steel 3 is fixedly connected with one end of the rotating shaft 2, a Hall chip 401 is arranged on the PCB circuit board 4, the Hall chip 401 is arranged on one side close to the magnetic steel 3, one side of the PCB circuit board 4 is connected with a shielding wire 402, a protective adhesive layer 5 for fixing the shielding wire 402 is arranged in the shell 1, and the protective adhesive layer 5 is arranged on one side of the PCB circuit board 4; a framework oil seal 6 is arranged in the shell 1, and the framework oil seal 6 is sleeved on the rotating shaft 2. In the embodiment, the rotating shaft 2 is made of stainless steel, when the rotating shaft 2 is used, the rotating shaft 2 rotates at a constant speed through a power device to drive the magnetic steel 3 on the rotating shaft 2 to rotate at a constant speed, and the magnetic steel 3 changes the direction of the magnetic field thereof during the rotation process, so that the hall chip 401 outputs a linearly changing signal through the shielding wire 402; the Hall chip 401 can realize signal output at any angle within 360 degrees through programming, the Hall chip 401 is in a current output mode, and can realize signal output from 4mA to 20mA and then back to 4mA through programming; due to the non-contact characteristic of the magnetic steel 3 and the Hall chip 401, the service life of the magnetic steel is ultra-long. The utility model discloses magnetic-sensing angle sensor that protection level is high, casing one end is equipped with locating hole and mounting groove, is convenient for fix the product in required position and uses, simple to operate; one end of the rotating shaft is provided with a groove for adjusting the initial zero position of the rotating shaft, so that the adjustment is more convenient; the whole structure is simple, and the production cost is low; the framework oil seal is arranged in the shell, so that the starting torque and the running torque can be increased, the protection grade of a product is improved, the waterproof performance and the dustproof performance are good, and the service life is long; the oil seal cover is used for reinforcing the framework oil seal, so that the structure is more stable, and the measurement precision is improved; the protection glue layer is arranged and used for fixing the shielding wire welded on the Hall chip, so that the fixing is firm, the measurement stability is improved, and the protection strength of the product is enhanced; be equipped with ball bearing in the casing for support the pivot part, reduce the frictional force in the pivot motion process, and guarantee its gyration precision, excellent in use effect.

Referring to fig. 1 and 2, an oil seal cover 601 is disposed at one end of the housing 1, and the framework oil seal 6 is disposed at one side of the oil seal cover 601; the framework oil seal 6 can increase the starting torque and the running torque, simultaneously improve the protection grade of the product, and has good waterproofness and dust resistance; the oil seal cover 601 is used for reinforcing the framework oil seal 6, so that the structure is more stable, and the measurement precision is improved. An end cover 101 is arranged at one end, far away from the oil seal cover 601, of the shell 1, and the end cover 101 is made of an aluminum alloy material in the embodiment, so that internal components can be protected, and the protection grade is improved; the protective adhesive layer 5 is arranged between the end cover 101 and the PCB 4; protection glue film 5 is epoxy glue material, and protection glue film 5 is used for the shielded wire 402 of fixed welding on hall chip 401, and is fixed firm, promotes measurement stability to the protection dynamics of reinforcing product. The end cover 101 is provided with the mounting guide post 102 for mounting the shielding wire 402, and the shielding wire 402 penetrates through the mounting guide post 102, so that the mounting is more stable, the end part of the shielding wire 402 is not easy to bend and damage, and the service life is long; one end of the shielding wire 402 penetrates through the protective glue layer 5 and is welded on the PCB 4, the shielding wire 402 comprises a shielding layer 403 and a wire 404, the wire 404 is used for connecting a power supply and providing signal output, the shielding layer 403 enables an output signal not to be interfered by external factors easily, the accuracy and stability of the signal are ensured, and the using effect is good.

Referring to fig. 1 to 3, a magnetic steel mounting base 201 is arranged at one end of the rotating shaft 2, and the magnetic steel 3 is fixedly mounted on the magnetic steel mounting base 201, so that the mounting is stable, and the measuring precision is ensured. One end of the rotating shaft 2 is provided with a groove 202, and the groove 202 is in a straight line shape; the groove 202 is used for adjusting the initial zero position of the rotating shaft 2, and the adjustment is more convenient. A ball bearing 7 is arranged in the shell 1, and the ball bearing 7 is arranged on one side of the framework oil seal 6; the ball bearing 7 is used for supporting the rotating shaft part, reducing the friction force of the rotating shaft 2 in the moving process and ensuring the rotation precision and has good use effect. Casing 1 one end is equipped with a plurality of locating holes 103, and casing 1 annular is equipped with mounting groove 104, and locating hole 103 and mounting groove 104 are convenient for use simple to operate with product fixed mounting in required position.

The magnetic-sensing angle sensor with high protection level of the utility model is internally provided with the ball bearing which is used for supporting the rotating shaft part, reducing the friction force in the moving process of the rotating shaft and ensuring the rotation precision of the rotating shaft, and has good use effect; one end of the shell is provided with a positioning hole and a mounting groove, so that the product can be conveniently and fixedly mounted at a required position for use; one end of the rotating shaft is provided with a groove for adjusting the initial zero position of the rotating shaft, so that the adjustment is more convenient; the whole structure is simple, and the production cost is low; the framework oil seal is arranged in the shell, so that the starting torque and the running torque can be increased, the protection grade of a product is improved, the waterproof performance and the dustproof performance are good, and the service life is long; the oil seal cover is used for reinforcing the framework oil seal, so that the structure is more stable, and the measurement precision is improved; be equipped with the protection glue film for the shielding wire of fixed welding on hall chip, it is fixed firm, promote measurement stability, and the protection dynamics of reinforcing product.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A magneto-sensitive angle sensor with a high protection level, comprising: the magnetic sensor comprises a shell (1) and a rotating shaft (2), wherein a magnetic sensing mechanism is arranged in the shell (1), the magnetic sensing mechanism comprises magnetic steel (3) and a PCB (printed circuit board) (4), the magnetic steel (3) is fixedly connected with one end of the rotating shaft (2), a Hall chip (401) is arranged on the PCB (4), the Hall chip (401) is arranged at one side close to the magnetic steel (3), a shielding wire (402) is connected to one side of the PCB (4), a protective glue layer (5) used for fixing the shielding wire (402) is arranged in the shell (1), and the protective glue layer (5) is arranged at one side of the PCB (4); be equipped with skeleton oil blanket (6) in casing (1), skeleton oil blanket (6) suit is in on pivot (2).

2. The magnetic-sensing angle sensor with high protection level according to claim 1, characterized in that an oil seal cover (601) is arranged at one end of the housing (1), and the framework oil seal (6) is arranged at one side of the oil seal cover (601).

3. The magneto-sensitive angle sensor with high protection rating of claim 2, wherein an end cap (101) is arranged at one end of the housing (1) far away from the oil seal cover (601), and the protective glue layer (5) is arranged between the end cap (101) and the PCB (4).

4. A magneto-sensitive angle sensor of high protection class according to claim 3, characterized in that the end cap (101) is provided with mounting studs (102) for mounting the shielding conductors (402).

5. The magneto-sensitive angle sensor with high protection level according to claim 1, wherein one end of the shielding lead (402) penetrates through the protective adhesive layer (5), and the shielding lead (402) comprises a shielding layer (403) and a lead (404).

6. The magnetic-sensing angle sensor with high protection level according to claim 1, wherein a magnetic steel mounting seat (201) is arranged at one end of the rotating shaft (2), and the magnetic steel (3) is fixedly mounted on the magnetic steel mounting seat (201).

7. The high-protection-level magnetic-sensing angle sensor according to claim 1, wherein a ball bearing (7) is arranged in the housing (1), and the ball bearing (7) is arranged on one side of the framework oil seal (6).

8. The magneto-sensitive angle sensor of claim 1, wherein the protective adhesive layer (5) is an epoxy adhesive.

9. The magnetic-sensing angle sensor with high protection level according to claim 1, characterized in that one end of the housing (1) is provided with a plurality of positioning holes (103), and the housing (1) is annularly provided with a mounting groove (104).

10. The magneto-sensitive angle sensor of high protection level according to claim 1, wherein the shaft (2) has a groove (202) at one end, and the groove (202) is in a straight line shape.