Non-contact angle sensor

Abstract

The utility model discloses a non-contact angle sensor which comprises a gear, a magnet is fixedly arranged on the side face of the gear, the magnet rotates along with rotation of the gear, the magnet is provided with an S pole and an N pole in the first direction, and the first direction is parallel to the plane where the gear is located; and the angle chip is arranged right opposite to the gear, the angle chip comprises a first Hall horizontal array and a second Hall horizontal array, and the first Hall horizontal array and the second Hall horizontal array are arranged in an intersecting manner. The absolute angle of the gear is obtained through induction of the magnet and the angle chip.

Description

Technical Field

[0001] The utility model relates to the technical field of angle sensors, in particular to a non-contact angle sensor. Background Art

[0002] The seat back of the vehicle can be adjusted manually or automatically to make passengers more comfortable and reduce fatigue. Some high-end vehicles can even retain the angles that passengers often use. When passengers ride next time, they can restore the angle with one click without adjusting the seat angle. When the vehicle is just leaving the factory, the seat back angle needs to be tested to ensure that it can be adjusted to a comfortable angle for passengers to ride comfortably.

[0003] However, conventional seat back angle measuring devices use relative angles in actual measurements, which results in large measurement errors. Furthermore, when the seat is powered off, the angle information will be lost. Therefore, there is an urgent need to design a vehicle seat back tilt angle absolute angle measuring device to improve such problems. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a non-contact angle sensor, which is particularly suitable for adjusting the seat back angle and obtaining the absolute angle of the seat back angle.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A non-contact angle sensor, comprising:

[0007] A gear, a magnet is fixedly provided on a side surface of the gear, the magnet rotates with the rotation of the gear, the magnet has an S pole and an N pole in a first direction, and the first direction is parallel to the plane where the gear is located;

[0008] An angle chip, wherein the angle chip is arranged opposite to the gear, and the angle chip comprises a first Hall horizontal array and a second Hall horizontal array, and the first Hall horizontal array and the second Hall horizontal array are arranged to intersect.

[0009] The above-mentioned non-contact angle sensor comprises: a worm, wherein the worm is meshed with the gear.

[0010] The above-mentioned non-contact angle sensor includes: a motor, wherein the motor drives the worm to rotate.

[0011] The above-mentioned non-contact angle sensor comprises: a PCB board, and the angle chip is arranged on the PCB board.

[0012] The above-mentioned non-contact angle sensor includes: a power signal line, and the power signal line is connected to the PCB board.

[0013] In the above-mentioned non-contact angle sensor, the magnet is a circular structure, and the S pole and the N pole are distributed on both sides of the circular structure.

[0014] In the above-mentioned non-contact angle sensor, the first Hall horizontal array and the second Hall horizontal array are vertically arranged.

[0015] Due to the adoption of the above technology, the utility model has the following positive effects compared with the prior art:

[0016] (1) The utility model obtains the absolute angle of the gear through the induction of a magnet and an angle chip.

[0017] (2) The utility model can adopt a worm gear transmission method and can be directly installed on the motor drive shaft, which is suitable for determining the adjustment angle of the seat back in the narrow space of the seat back. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the non-contact angle sensor of the utility model.

[0019] In the attached figure: 1. worm gear; 2. gear; 3. PCB; 4. angle chip; 5. power and signal lines; 6. magnet. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0021] Figure 1 This is a schematic diagram of the non-contact angle sensor of the utility model, please refer to Figure 1 As shown, a non-contact angle sensor of a preferred embodiment is shown, including: a gear 2 and an angle chip 4, a magnet 6 is fixedly provided on the side of the gear 2, the magnet 6 rotates with the rotation of the gear 2, the magnet 6 has an S pole and an N pole in a first direction, and the first direction is parallel to the plane where the gear 2 is located; the angle chip 4 is arranged opposite to the gear 2, and the angle chip 4 includes a first Hall horizontal array and a second Hall horizontal array, and the first Hall horizontal array and the second Hall horizontal array are arranged to intersect.

[0022] Specifically, one side of the gear 2 is provided with an annular groove, and the magnet 6 is fixedly disposed in the annular groove.

[0023] Further, as a preferred embodiment, the gear 2 is a worm wheel, comprising: a worm 1, and the worm 1 is meshed with the gear 2. The worm 1 rotates to drive the gear 2 to rotate.

[0024] Specifically, the worm 1 is a columnar structure, and the worm 1 has a center hole for fixing with the motor drive shaft of the motor. Preferably, one end of the worm 1 is also provided with two arc-shaped bosses arranged opposite to each other, a groove is formed between the two arc-shaped bosses, and the center hole is located between the two arc-shaped bosses. More preferably, the arc-shaped boss and the groove form a fixing structure or a key structure.

[0025] Furthermore, as a preferred embodiment, it includes: a motor, which drives the worm 1 to rotate.

[0026] Further, as a preferred embodiment, it includes: a PCB board 3, and an angle chip 4 is arranged on the PCB board 3.

[0027] Further, as a preferred embodiment, it includes: a power signal line 5 , which is connected to the PCB board 3 .

[0028] Specifically, in this embodiment, the motor runs to drive the worm 1 to rotate, thereby further driving the gear 2 to rotate, thereby causing the N / S pole of the magnet 6 to change, and the magnetic field change is detected by the angle chip 4 to obtain the absolute angle of the gear 2.

[0029] More specifically, when the motor is running, the angle of change of the N / S pole of the magnet 6 is a. The first Hall horizontal array and the second Hall horizontal array inside the angle chip 4 directly below the magnet 6 can sense the change of the magnetic field perpendicular to the surface of the angle chip 4, and output two sine and cosine voltage signals as the magnetic field angle a rotates, and then obtain the angle value a after amplification, compensation and calculation by the subsequent dedicated circuit, and output the angle signal through OUT.

[0030] Preferably, the model of the angle chip 4 is MT6511.

[0031] Furthermore, in other embodiments, other components whose angles are to be measured may be mounted on the gear 2 .

[0032] Further, as a preferred embodiment, the magnet 6 is a circular structure, especially a ring structure, and the S pole and the N pole are distributed on both sides of the circular structure.

[0033] Further, as a preferred embodiment, the first Hall horizontal array and the second Hall horizontal array are vertically arranged.

[0034] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-contact angle sensor, characterized in that: include: A gear, a magnet is fixedly provided on a side surface of the gear, the magnet rotates with the rotation of the gear, the magnet has an S pole and an N pole in a first direction, and the first direction is parallel to the plane where the gear is located; An angle chip, wherein the angle chip is arranged opposite to the gear, and the angle chip comprises a first Hall horizontal array and a second Hall horizontal array, and the first Hall horizontal array and the second Hall horizontal array are arranged to intersect.

2. The non-contact angle sensor according to claim 1, characterized in that: include: A worm is meshed with the gear.

3. The non-contact angle sensor according to claim 2, characterized in that: include: A motor drives the worm to rotate.

4. The non-contact angle sensor according to claim 1, characterized in that: include: PCB board, the angle chip is arranged on the PCB board.

5. The non-contact angle sensor according to claim 4, characterized in that: include: A power signal line is connected to the PCB board.

6. The non-contact angle sensor according to claim 1, characterized in that: The magnet is a circular structure, and the S pole and the N pole are distributed on both sides of the circular structure.

7. The non-contact angle sensor according to claim 1, characterized in that: The first Hall horizontal array and the second Hall horizontal array are vertically arranged.

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