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Sensing device

A technology of sensing device and housing, which is applied in measurement devices, electromechanical devices, transportation and packaging, etc., can solve problems such as noise and noise increase, and achieve the effect of reducing noise

Active Publication Date: 2021-01-22
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the rotation of the stator, there is a problem of noise generation due to surface contact
[0007] Also, in the case where the amount of surface contact between the stator and the housing is increased to minimize the gap, causing safety regarding the function of the torque sensor, there is a problem of further increase in noise
[0008] In addition, there is a problem of increased noise due to material differences between the stator ring and the housing of the stator

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0089] figure 1 is a perspective view showing the sensing device according to the first embodiment, figure 2 is an exploded perspective view showing the sensing device according to the first embodiment. exist figure 2 Among them, the x direction represents the axial direction, and the y direction represents the radial direction. Also, the axial direction and the radial direction are perpendicular to each other.

[0090] refer to figure 1 and figure 2 , the sensing device 1 according to the first embodiment may include: a housing 100 including a first housing 200 and a second housing 300; a stator 400 disposed in the housing 100; a rotor 500 disposed in the The stator 400 ; the collector 600 provided in the case 100 ; and the sensing part 700 . Here, the stator 400 may include a cage 410 , a body 420 disposed at one side of an outer peripheral surface of the cage 410 , and two stator teeth 430 disposed on the body 420 . Also, the collector 600 provided in the first ca...

no. 2 example

[0250] Figure 22 is a view showing a sensing device according to the second embodiment.

[0251] refer to Figure 22 , The sensing device according to the second embodiment may include a rotor 1100 , a stator 1200 , a sensing part 1300 , a shaft 1400 , a housing 1500 , a first gear 1600 and a second gear 1700 .

[0252] The rotor 1100 is provided inside the stator 1200 . The rotor 1100 is connected to the input shaft of the steering shaft. Here, the input shaft may refer to a steering shaft connected to a steering handle of the vehicle. The rotor 1100 may include a cylindrical frame 1110 and a first magnet 1120 disposed on the frame 1110 . The input shaft is inserted into the bracket 1110 . Also, the first magnet 1120 may be disposed outside the bracket 1110 . The first magnet 1120 may be glued and fixed or press-fitted and fixed to the outer peripheral surface of the bracket 1110 .

[0253] The stator 1200 is provided outside the rotor 1100 . The stator 1200 may incl...

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Abstract

An embodiment relates to a sensing device comprising: a housing; a stator disposed within the housing; and a rotor disposed within the stator, wherein the stator comprises a body and a stator tooth coupled to the body, the housing comprises a first surface corresponding to a bottom surface of the stator tooth, and the first surface comprises a curved surface protruding toward the stator tooth. Accordingly, noise can be reduced by reducing the amount of contact between the stator and the housing.

Description

technical field [0001] Embodiments relate to a sensing device. Background technique [0002] An electronic power steering system (hereinafter referred to as 'EPS') operates a motor in an electronic control unit according to an operating condition to ensure rotational stability and provide a high degree of elasticity, thereby allowing a driver to drive safely. [0003] In order to provide appropriate torque, the EPS includes a sensor assembly configured to measure torque of a steering shaft, steering angle, and the like. The sensor assembly may include a torque sensor configured to measure torque acting on the steering shaft, an index sensor (index sensor) configured to measure angular acceleration of the steering shaft, and the like. Also, the steering shaft may include an input shaft connected to the handle, an output shaft connected to the power transmission structure on the wheel side, and a torsion bar configured to connect the input shaft and the output shaft. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/10G01L19/14G01L3/02
CPCH02K11/20H02K11/24H02K11/02H02K5/24G01L3/104G01L5/221B62D6/10G01L3/101
Inventor 李树炯孙豪赞
Owner LG INNOTEK CO LTD