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Displacement measuring device

A technology of displacement measurement and measuring device, which is applied in the direction of measuring device, electromagnetic measuring device, electric/magnetic position measurement, etc., which can solve the problems of expensive and difficult to achieve high precision in relative positioning

Active Publication Date: 2022-04-29
爱德拜克私人有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The disadvantage of this known measuring device is the need to rotate the sensor unit, which requires the transmission of the measuring signal to the outside world
But more importantly, the disadvantage is that the two housing holes for the functional elements of the measuring device, namely the magnet and the sensor, are formed in separate parts, namely the rod and the sleeve, which are later joined by welding
In addition to being expensive, this makes relative positioning between the magnet and sensor difficult to achieve with high precision

Method used

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Examples

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Embodiment Construction

[0029] figure 2 An embodiment of a displacement measuring device 20 according to the invention is schematically shown, which is suitable for use as a force measuring device in an electric assist bicycle. Reference numerals in the range 21-29 indicate and refer to figure 1 Components numbered in the range 1-9 discussed above are the same or similar components. Reference numeral 33 denotes mounting holes through which screws are used to connect a support portion 23 to the frame of this bicycle. Reference numeral 32 denotes a mounting hole for connecting the opposing support portion 22 to the shaft of the driven wheel. If the rider pushes on the pedals, the driving force in the drive train (usually the chain) will exert a force on the driven wheel, displacing the axle of the driven wheel (usually the rear wheel) slightly relative to the bicycle frame, causing the support Portions 22 and 23 are displaced relative to each other, mainly in a direction perpendicular to the X-dire...

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Abstract

The displacement measuring device (20) comprises a Hall sensor (37) and a magnet (35) installed in a magnet housing (38), the magnet housing (38) has a rotational degree of freedom in the accommodation space (47), and the adjustment device is Obtaining optimum sensitivity involves rotating the magnet housing (36). After adjustment, the magnet housing (36) is fixed in the receiving space (47).

Description

technical field [0001] The present invention generally relates to force measuring devices. [0002] To measure force, various measurement techniques can be used. Forces tend to cause deformation of an object on which the force is exerted, and one measurement technique is to measure the deformation of the object involved. Deformation of adjacent or solid objects can be measured by, for example, strain gauges. Strain gauges actually measure the local change in length (stretch or contraction) of an object. If the object comprises two parts with a gap therebetween, deformation can cause the two object parts to displace relative to each other, and the mutual displacement of the two object parts can be measured as proportional to the applied force. On the other hand, it may also be necessary to measure the relative displacement of two different objects. [0003] In particular, the invention relates to a measuring device based on the principle of measuring displacements. Backgr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/00G01L1/12B62M6/50G01D5/14G01B7/24G01L5/13
CPCG01L1/122B62M6/50G01D5/145G01B7/003G01B7/24G01L5/13
Inventor 巴斯蒂安·安德烈亚斯·德赫尔里彭马克·安东尼·曼奈斯
Owner 爱德拜克私人有限公司