Resistance strain sheet, sensing assembly, force sensor and skateboard

Patent metadata

Field	Value
Publication number	US-10850182-B2
Application number	US-201916451010-A
Country	US
Kind code	B2
Filing date	Jun 25, 2019
Priority date	Aug 31, 2018
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

An embodiment of the present disclosure provides a resistance strain sheet, a sensing assembly, a force sensor and a skateboard, wherein the resistance strain sheet includes: a strain sheet body; and a resistance wire, the strain sheet body having an symmetry axis, a plurality of resistance wires being provided, and the plurality of resistance wires being divided into two groups, the two groups of resistance wires are electrically connected to each other and symmetrically arranged on both sides of the symmetry axis, and each of the plurality of resistance wire being arranged at an acute angle with the symmetry axis.

First claim

What is claimed is:

1. A resistance strain sheet, comprising:
a strain sheet body; and
a resistance wire, the resistance wire having a symmetry axis, a plurality of resistance wires being provided, and the plurality of resistance wires being divided into two groups, the two groups of the resistance wires being electrically connected to each other and symmetrically arranged on both sides of the symmetry axis, and each of the plurality of resistance wires being arranged at an acute angle with the symmetry axis.

2. The resistance strain sheet according to claim 1 , wherein the acute angle formed by the each of the plurality of resistance wires and the symmetry axis is 45 degrees.

3. A sensing assembly, comprising:
a flexible connecting piece, the flexible connecting piece being provided with a plurality of connecting ends, and the flexible connecting piece being printed or etched with a wired structure; and
a resistance strain sheet, each of the plurality of connection ends being provided with one resistance strain sheet, and the wired structure being electrically connected to each resistance strain sheet, and the resistance strain sheet being the resistance strain sheet as claimed in claim 1 .

4. A sensing assembly, comprising:
a flexible connecting piece, the flexible connecting piece being provided with a plurality of connecting ends, and the flexible connecting piece being printed or etched with a wired structure; and
a resistance strain sheet, each of the plurality of connection ends being provided with one resistance strain sheet, and the wired structure being electrically connected to each resistance strain sheet, and the resistance strain sheet being the resistance strain sheet as claimed in claim 2 .

5. The sensing assembly according to claim 3 , wherein the flexible connecting piece has four connecting ends, and each of the four connecting ends is provided with one resistance strain sheet.

6. The sensing assembly according to claim 4 , wherein the flexible connecting piece has four connecting ends, and each of the four connecting ends is provided with one resistance strain sheet.

7. A force sensor, comprising:
a strain member, the strain member having a plurality of strain detection regions; and
a sensing assembly, a plurality of resistance strain sheets of the sensing assembly being disposed at the plurality of strain detection regions in one-to-one correspondence to form a Wheatstone Bridge, the Wheatstone Bridge being configured to convert an variation of a resistance value generated by each of the plurality of resistance strain sheets into a voltage value and transmit the voltage value outwards, wherein the variation of resistance value generated by the each of the plurality of resistance strain sheets is generated by a shear strain at a corresponding strain detection region of the strain member, the sensing assembly is the sensing assembly as claimed in claim 3 .

8. A force sensor, comprising:
a strain member, the strain member having a plurality of strain detection regions; and
a sensing assembly, a plurality of resistance strain sheets of the sensing assembly being disposed at the plurality of strain detection regions in one-to-one correspondence to form a Wheatstone Bridge, the Wheatstone Bridge being configured to convert an variation of a resistance value generated by each of the plurality of resistance strain sheets into a voltage value and transmit the voltage value outwards, wherein the variation of resistance value generated by the each of the plurality of resistance strain sheets is generated by a shear strain at a corresponding strain detection region of the strain member, the sensing assembly is the sensing assembly as claimed in claim 4 .

9. A force sensor, comprising:
a strain member, the strain member having a plurality of strain detection regions; and
a sensing assembly, a plurality of resistance strain sheets of the sensing assembly being disposed at the plurality of strain detection regions in one-to-one correspondence to form a Wheatstone Bridge, the Wheatstone Bridge being configured to convert an variation of a resistance value generated by each of the plurality of resistance strain sheets into a voltage value and transmit the voltage value outwards, wherein the variation of resistance value generated by the each of the plurality of resistance strain sheets is generated by a shear strain at a corresponding strain detection region of the strain member, the sensing assembly is the sensing assembly as claimed in claim 5 .

10. A force sensor, comprising:
a strain member, the strain member having a plurality of strain detection regions; and
a sensing assembly, a plurality of resistance strain sheets of the sensing assembly being disposed at the plurality of strain detection regions in one-to-one correspondence to form a Wheatstone Bridge, the Wheatstone Bridge being configured to convert an variation of a resistance value generated by each of the plurality of resistance strain sheets into a voltage value and transmit the voltage value outwards, wherein the variation of resistance value generated by the each of the plurality of resistance strain sheets is generated by a shear strain at a corresponding strain detection region of the strain member, the sensing assembly is the sensing assembly as claimed in claim 6 .

11. The force sensor according to claim 7 , wherein the strain member is a stressed strain plate, and an avoiding groove structure is provided on the stressed strain plate, the avoiding groove structure extends in a bending shape from an edge of the stressed strain plate to an interior of the stressed strain plate, and the avoiding groove structure surrounds a stressed region on the stressed strain plate, the each of the plurality of strain detection regions and the stressed region are arranged at intervals and provided on two sides of a part of a channel of the avoiding groove structure, and the each of the plurality of strain detection region is located on a side, close to an edge of the stressed strain plate, of the stressed region.

12. The force sensor according to claim 11 , wherein the sensing assembly is adhered to a surface of the stressed strain plate by a flexible connecting piece, and a part of the flexible connecting piece passing through the avoiding groove structure is located inside the channel of the avoiding groove structure.

13. The force sensor according to claim 11 , wherein the force sensor further comprises a first mounting plate and a force transmission member, wherein the first mounting plate is located above the stressed strain plate, the force transmission member is arranged between the first mounting plate and the stressed strain plate, and a first end face of the force transmission member is in contact with the stressed strain plate and is located in the stressed region, a second end face of the force transmission member is in contact with the first mounting plate.

14. The force sensor according to claim 13 , wherein the force sensor further comprises a fastener, the force transmission member is of a sleeve shape, and the first mounting plate is provided with a connecting hole and a first assembling hole, wherein the fastener is connected to the stressed strain plate after passing through the connecting hole ( 31 ) and the force transmission member in sequence, and the first assembling hole is used for being passed through by a connecting member adaptively connected to an external member.

15. The force sensor according to claim 13 , wherein the force sensor further comprises a second mounting plate, which is arranged between the first mounting plat

Assignees

• Ninebot Beijing Tech Co Ltd

Inventors

• Kwan Lai Ting
• Yuan Yubin
• Chen Zhongyuan

Classifications

• G01L5/225

  to foot actuated controls, e.g. brake pedals · CPC title

• G01L5/1627 Primary

  of strain gauges (using piezoresistors G01L5/162) · CPC title

• G01L1/2206

  Special supports with preselected places to mount the resistance strain gauges; Mounting of supports · CPC title

• B62M6/50

  characterised by detectors or sensors, or arrangement thereof · CPC title

• A63C2203/18

  Measuring a physical parameter, e.g. speed, distance · CPC title