Automotive steering wheel angle sensor

An angle sensor and steering wheel technology, applied in the field of vehicle sensors, can solve the problems of easy fatigue of the return spring, failure of the shaft to return to its original position, weakened elasticity, etc., and achieve the effect of improving superiority

Pending Publication Date: 2020-02-28
HANGZHOU RENREN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a steering wheel angle sensor for vehicles, which solves the problems of the existing Hall angle sensor that the return spring is easily

Method used

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  • Automotive steering wheel angle sensor
  • Automotive steering wheel angle sensor
  • Automotive steering wheel angle sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a vehicle steering wheel angle sensor provided by the present invention includes a housing 1 and a circuit board 25. The center of the housing is provided with a through hole 2 for the drive shaft of the vehicle steering wheel to pass through; The main gear 3 is mounted on the periphery of the hole, and the first gear 4 and the second gear 5 are also mounted on one side of the through hole; the circuit board is mounted on the periphery of the through hole, and the circuit board is mounted on the main gear, the first gear and the Above the second gear; the first gear and the second gear respectively mesh with the main gear, the radius of the first gear is larger than the second gear; wherein the main gear is 66 teeth, the first gear is 28 teeth, and the second gear is 22 Tooth; the first gear and the second gear center are provided with a fixed groove 26 recessed inward to form a circular, two fixed grooves are fixed with a pair of parallel arran...

Embodiment 2

[0030] Such as figure 2 As shown, a vehicle steering wheel angle sensor provided by the present invention includes a housing and a circuit board. The center of the housing is provided with a through hole for the transmission shaft of the vehicle steering wheel to pass through; There is a main gear, one side of the through hole is also equipped with a first gear and a second gear; the circuit board is installed on the periphery of the through hole, and the circuit board is installed above the main gear, the first gear and the second gear; The first gear and the second gear respectively mesh with the main gear. The radius of the first gear is larger than that of the second gear. The main gear has 66 teeth, the first gear has 28 teeth, and the second gear has 22 teeth. Both the gear and the second gear center are provided with a fixing groove 26 recessed inward to form a circular shape. A pair of parallel magnetic plates 29 are fixed to the two fixing grooves. A fixing column 27 i...

Embodiment 3

[0032] Such as image 3 , Figure 4 with Figure 5 As shown, a plurality of card slots 8 are provided on the housing. The upper shell 9 is provided with a plurality of clamping blocks 10 adapted to the clamping slots. The cross section of the slot is tapered, the slot 11 is provided on both sides of the slot, and the bottom end of the slot is equipped with an electrode sheet 12; the slot is equipped with a conductive lever that can slide along the slot 13. One side of the conductive clamp rod is installed with a hot melt glue to solidify to form a fixed block 14; the outer side wall of the housing is provided with a pair of terminal heads 15; a spiral elastic heating wire 16 is installed in the fixed block; The bottom end of the chute is provided with a diversion groove 17, one end of the diversion groove is connected to the chute, and the other end penetrates to the inner side wall surface of the slot; a pair of electrode plates on both sides of the slot are connected to a pai...

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PUM

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Abstract

The invention provides an automobile steering wheel angle sensor which comprises a shell and a circuit board. A through hole is formed in the center of the shell, a driving gear is mounted on the periphery of the through hole, a first gear and a second gear are mounted on one side of the through hole, the circuit board is mounted on the periphery of the through hole and mounted above the driving gear, the first gear and the second gear, the first gear and the second gear are meshed to the driving gear respectively, radius of the first gear is greater than that of the second gear, the driving gear has 66 teeth, the first gear has 28 teeth, and the second gear has 22 teeth; an inwards-recessed round fixing groove is formed in the center of each of the first gear and the second gear, a pair of magnetic sheets in side-by-side arrangement are fixed in the fixing grooves, and a magnetic induction Hall chip is mounted on each magnetic sheet. The defect of angle measuring deviation caused by the fact that a rotating shaft cannot go back to an original position because a resetting spring is prone to fatigue and lower in elasticity when a Hall angle sensor is used for a long time is avoided.

Description

Technical field [0001] The invention relates to the field of sensors for vehicles, in particular to a steering wheel angle sensor for vehicles. Background technique [0002] At present, as one of the collected signals of the automotive electronic control system, the vehicle angle sensor is an important component of the automotive electronic control system, and can be widely used in systems such as steering, chassis height, ETC, and acceleration module (electronic accelerator pedal). [0003] The early realization of the angle sensor mainly adopted the sliding film resistance method, which has a high failure rate and serious early damage. At present, it has changed to a contact mode composed of Hall devices. The key of Hall angle sensors is the design of Hall devices and magnetic circuit. The pros and cons of the magnetic circuit design can determine the complexity, manufacturing cost, and output linearity of the angle sensor. The existing Hall angle sensor has a rotating shaft, a...

Claims

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Application Information

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IPC IPC(8): G01B7/30
CPCG01B5/0025G01B7/30
Inventor 钱国钧
Owner HANGZHOU RENREN GRP
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