# US 11,307,108 B2 · Torsion adjustment device

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- Number: US 11,307,108 B2
- Document ID: US11307108B2
- Status: Granted
- Kind: B2
- Application number: 16/674,923
- Filed: 2019-11-05
- Published: 2020-06-11
- Granted: 2022-04-19
- Earliest claimed: 2018-12-11
- Assignees: Pegatron Corporation
- Applicants: Pegatron Corporation
- Inventors: Shiuan-Chai Chiang; Li-Jin Ji; Jen-Hui Wang
- Web page: https://patentgrep.com/patent/US11307108B2

## CPC

- G01L 5/0071: {Specific indicating arrangements, e.g. of overload}
- G01L 5/24: for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
- G01L 5/0066: {Calibration arrangements}
- G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G)

## Abstract

The present disclosure provides a torsion adjustment device, including a torsion receiving element, a force transmission module and an elastic force module. The torsion receiving element includes a transmission shaft coupled to a torsion mechanism. The transmission shaft is driven by a torsion applied by the torsion mechanism to rotate. The force transmission module includes a gear set and a gear turntable meshing with the gear set, and the transmission shaft is coupled to the gear set to drive the gear set to rotate by the torsion. The elastic force module includes an elastic element and a plurality of force-bearing balls. The elastic element is configured to generate an elastic force. The force-bearing balls abut between the elastic element and the gear turntable and mesh with the gear turntable. When the torsion is greater than the elastic force, the gear turntable is disengaged from the force-bearing balls and rotated.

## Claims

### Claim 1

A torsion adjustment device, used to adjust a torsion of a torsion mechanism, comprising:
a torsion receiving element, comprising a transmission shaft coupled to the torsion mechanism, wherein the transmission shaft is driven by a torsion applied by the torsion mechanism to rotate;
a force transmission module, comprising a gear set and a gear turntable meshing with the gear set, wherein the transmission shaft is coupled to the gear set to drive the gear set to rotate by the torsion; and
an elastic force module, comprising an elastic element and a plurality of force-bearing balls, wherein the elastic element is configured to generate an elastic force, the plurality of force-bearing balls abut between the elastic element and the gear turntable and mesh with the gear turntable, and when the torsion is greater than the elastic force, the gear turntable is disengaged from the plurality of force-bearing balls and rotated.

### Claim 2 (depends on 1)

The torsion adjustment device according to claim 1, wherein the gear set comprises a center gear and a plurality of outer ring gears, wherein the center gear is coupled to the transmission shaft and the plurality of outer ring gears mesh with the center gear; and the gear turntable is sleeved outside the gear set and meshes with the plurality of outer ring gears.

### Claim 3 (depends on 2)

The torsion adjustment device according to claim 2, wherein the gear set is an epicyclic gear set, the center gear is a sun gear, and the outer ring gears are planet gears.

### Claim 4 (depends on 1)

The torsion adjustment device according to claim 1, wherein the gear turntable comprises a plurality of grooves to respectively mesh with the plurality of force-bearing balls, and when the torsion is greater than the elastic force, the plurality of force-bearing balls press the elastic element to cause the plurality of force-bearing balls to be disengaged from the grooves.

### Claim 5 (depends on 1)

The torsion adjustment device according to claim 1, wherein the elastic force module further comprises a bottom plate, a pressing plate and a plurality of elastic force adjustment columns, the elastic element abuts between the bottom plate and the pressing plate, the plurality of elastic force adjustment columns are arranged on the bottom plate and pass through the pressing plate to adjust a distance between the bottom plate and the pressing plate through the plurality of elastic force adjustment columns, so as to adjust the elastic force.

### Claim 6 (depends on 5)

The torsion adjustment device according to claim 5, wherein the elastic force module also comprises a plurality of nuts, the plurality of elastic force adjustment columns are a plurality of studs, and the plurality of nuts are respectively sleeved outside the plurality of studs and abut against the pressing plate, so as to adjust the distance between the bottom plate and the pressing plate by rotating the nuts.

### Claim 7 (depends on 1)

The torsion adjustment device according to claim 1, further comprising a rotatably locked assembly, wherein the transmission shaft is coupled to the rotatably locked assembly, so as to lock the rotatably locked assembly via rotation.

### Claim 8 (depends on 7)

The torsion adjustment device according to claim 7, further comprising a base and a scale column arranged on the base, wherein the rotatably locked assembly is arranged on the base, and elastic force scales are marked on the scale column, so as to mark the elastic force.

### Claim 9 (depends on 1)

The torsion adjustment device according to claim 1, wherein the elastic element is a compression spring.

### Claim 10 (depends on 1)

The torsion adjustment device according to claim 1, further comprising a torsion sensor, coupled to the torsion receiving element to sense the torsion.