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US 11,815,156 B2Granted
Shock absorber and transportation tool
AssigneeNinebot (Changzhou) Tech Co., Ltd.
InventorsRonghui Lv, Huocheng Wei, Can Wang
Life of this patent
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Abstract
A shock absorber and a transportation tool. The shock absorber includes a first rotating arm; a second rotating arm pivotally coupled to the first rotating arm; and a torsion bar spring having a first end coupled to the first rotating arm and a second end coupled to the second rotating arm, wherein an included angle between the first rotating arm and the rotating arm has a set value. The shock absorber has a simple structure and good shock absorption effect and adjustable stroke.
Claims17
A shock absorber comprising:
- a first rotating arm which is defined with a first connecting hole;
- a second rotating arm pivotally coupled to the first rotating arm;
- and
- a torsion bar spring having a first end coupled to the first rotating arm and a second end coupled to the second rotating arm,
- wherein when the torsion bar spring undergoes no torsional deformation, an included angle between the first rotating arm and the second rotating arm has a set value,
- wherein the included angle between the first rotating arm and the second rotating arm has a first critical value and a second critical value, and the set value is any value between the first critical value and the second critical value,
- wherein the shock absorber further comprises an expansion sleeve;
- the expansion sleeve comprises an outer expansion sleeve fitted in the first connecting hole and an inner expansion sleeve fitted in the outer expansion sleeve;
- and the first end of the torsion bar spring is fitted in the inner expansion sleeve, and
- wherein the expansion sleeve further comprises a first bolt, the inner expansion sleeve is provided with a limiting flange, the outer expansion sleeve is provided with a first threaded hole, and a second connecting hole is defined on the limiting flange, the first bolt passes through the second connecting hole and is threadedly fitted with the first threaded hole.
7 more elements
A transportation tool, comprising:
- a wheel configured as either of a front wheel and a rear wheel;
- and
- a shock absorber, comprising:
- a first rotating arm, wherein the first rotating arm is defined with a first connecting hole;
- a second rotating arm pivotally coupled to the first rotating arm;
- and
- a torsion bar spring having a first end coupled to the first rotating arm and a second end coupled to the second rotating arm,
- wherein when the torsion bar spring undergoes no torsional deformation, an included angle between the first rotating arm and the second rotating arm has a set value, and the first rotating arm is coupled to a rotating shaft of the wheel,
- wherein the included angle between the first rotating arm and the second rotating arm has a first critical value and a second critical value, and the set value is any value between the first critical value and the second critical value,
- wherein the shock absorber further comprises an expansion sleeve;
- the expansion sleeve comprises an outer expansion sleeve fitted in the first connecting hole and an inner expansion sleeve fitted in the outer expansion sleeve;
- and the first end of the torsion bar spring is fitted in the inner expansion sleeve, and
- wherein the expansion sleeve further comprises a first bolt, the inner expansion sleeve is provided with a limiting flange, the outer expansion sleeve is provided with a first threaded hole, and a second connecting hole is defined on the limiting flange, the first bolt passes through the second connecting hole and is threadedly fitted with the first threaded hole.
10 more elements
Dependencies are inferred from the claim text.