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Rotation angle detection device, knob, learning appliance and entertainment appliance

A technology of rotation angle detection and rotating parts, applied in the field of magnetic induction, can solve problems such as easy failure or safety, and achieve the effect of improving the reliability and safety of use

Active Publication Date: 2022-03-22
泉州昆泰芯微电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiment of the present application is to provide a rotation angle detection device, a knob, a learning appliance and an entertainment appliance, so as to solve the technical problems existing in the prior art that the angle recognition device is prone to failure or safety problems during operation

Method used

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  • Rotation angle detection device, knob, learning appliance and entertainment appliance
  • Rotation angle detection device, knob, learning appliance and entertainment appliance
  • Rotation angle detection device, knob, learning appliance and entertainment appliance

Examples

Experimental program
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Effect test

Embodiment 1

[0056] See figure 1 , the rotation angle detecting device 100 provided by the embodiment of the present application will now be described. The rotation angle detection device 100 includes: a base 110 , a rotating member 120 and a magnetic induction component 130 .

[0057] The rotating member 120 is rotatably mounted on the base 110, and the rotating member 120 is provided with a transmission surface 121. The transmission surface 121 is located at one end of the rotating member 120 along the axial direction and the axial position dimension of the driving surface 121 follows the rotation of the rotating member 120. and change; the magnetic induction assembly 130 includes a detection moving part 131, a detection magnet 132, and a detection magnetic induction element 133, and one end of the detection moving part 131 is configured to keep in contact with the transmission surface 121, and the detection magnet 132 is connected with the detection moving part 131 and follows the detec...

Embodiment 2

[0067] see figure 2 , in some other examples, the transmission surface 221 of the rotating member 220 may be located on the outer circumference of the rotating member 220 and the radial position size of the driving surface 221 changes with the rotation of the rotating member 220 . The radius of the driving surface 221 changes with the rotation of the rotating member 220, and the moving direction of the detecting moving member 131 is set along the radial direction of the rotating member 220, thus, the driving surface 221 can drive the detecting moving member 131 to move left and right during the rotation. Specifically, the rotating member 220 may be a cam, and the transmission surface 221 includes a cam surface disposed around the rotation axis of the rotating member 220 , and the distance from the cam surface to the rotating axis of the rotating member 220 changes with the rotation of the rotating member 220 . like figure 2 As shown, the rotation axis of the rotating member...

Embodiment 3

[0069] see image 3 , further, the rotating member 320 can be presented as an eccentric wheel, and its rotation axis is at point O. The transmission surface 321 of the rotary member 320 has point H, point I, point J, and point K sequentially along the counterclockwise direction, the radius of point J is greater than the radius of point I, and the radius of point K may be equal to the radius of point J. During the rotation process of the rotating part 320, the detection magnetic induction element 133 detects the change of the radial dimension of the rotating part 320. For the J point and the K point, the two radii are equal, and the control system can judge and detect according to the change rule of the radial dimension Whether the moving member 131 is in contact with the J point or the K point.

[0070] for figure 1 and figure 2 In the technical solution shown, the axial position dimension or radial position dimension of the transmission surface 121 has a large range of ch...

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PUM

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Abstract

The invention provides a rotation angle detection device, a knob, a learning appliance and an entertainment appliance. The rotation angle detection device comprises a base; the rotating part is provided with a transmission surface, the transmission surface is located at one end of the rotating part in the axial direction, and the position size of the transmission surface changes along with rotation of the rotating part; the magnetic induction assembly comprises a detection moving part, a detection magnet and a detection magnetic induction element, one end of the detection moving part is configured to keep in contact with the transmission surface, the detection magnet is connected with the detection moving part and moves along with the detection moving part, and the detection magnetic induction element is fixed relative to the base and used for detecting the position change of the detection magnet. The rotating piece of the rotating angle detection device drives the detection magnet to move in the rotating process, the detection magnetic induction element detects the position change of the detection magnet, the rotating angle of the rotating piece can be measured and calculated, the magnetic induction mode has the characteristic of non-electric contact, and the use reliability and safety of the rotating angle detection device can be improved.

Description

technical field [0001] The present application belongs to the technical field of magnetic induction, and more specifically relates to a rotation angle detection device and a knob. Background technique [0002] In some application scenarios that need to identify the rotation angle, such as a knob used to adjust the fan speed, it is usually necessary to identify the angle corresponding to the stop position after the rotation of the rotating member. [0003] At present, the existing angle recognition device usually adopts a potentiometer, and the rotation angle is judged according to the output resistance of the potentiometer. For example, the patent document with publication number CN214837227U discloses a fan circuit, which uses a potentiometer as a speed regulating module. [0004] However, the sliding plate of the potentiometer will generate an arc during the sliding process, which will cause impact on the circuit components, which is prone to failure or safety problems, a...

Claims

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Application Information

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IPC IPC(8): G01B7/30G05G1/10G09B23/18A63H33/00
CPCG01B7/30G09B23/181A63H33/00G05G1/10
Inventor 武建峰王江其他发明人请求不公开姓名
Owner 泉州昆泰芯微电子科技有限公司