US 2021/0341040 A1Published application

Extension/contraction mechanism and mobile body

AssigneeToyota Jidosha Kabushiki Kaisha

InventorHirotaka KOMURA

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Abstract

An extension/contraction mechanism in which an extension/contraction part is able to turn is provided. An extension/contraction mechanism according to one aspect of the present disclosure includes a first drive source connected to a sending/pulling part so as to be able to transmit a drive force, and a second drive source connected to the sending/pulling part and a turning part that rotatably supports the sending/pulling part so as to be able to transmit a drive force via a gear group. When a rotational speed transmitted to the sending/pulling part to rotate the sending/pulling part by the first drive source is equal to a rotational speed transmitted to the sending/pulling part to rotate the sending/pulling part by the second drive source, an extension/contraction part turns via the turning part. When the above rotational speeds are different from each other, the extension/contraction part is extended or contracted.

Claims4

Dependent claims

A n extension/contraction mechanism comprising an extension/contraction part that is extended when a sending/pulling part is rotated in one direction and is contracted when the sending/pulling part is rotated in another direction, the extension/contraction mechanism comprising:

a first drive source connected to the sending/pulling part in such a way that the first drive source is able to transmit a drive force to the sending/pulling part;
and
a second drive source connected to the sending/pulling part and a turning part that rotatably supports the sending/pulling part in such a way that the second drive source is able to transmit a drive force to the sending/pulling part and the turning part via a gear group, wherein
when a rotational speed to be transmitted to the sending/pulling part in order to rotate the sending/pulling part by the first drive source is equal to a rotational speed to be transmitted to the sending/pulling part in order to rotate the sending/pulling part by the second drive source, the extension/contraction part turns via the turning part, and
when the rotational speed to be transmitted to the sending/pulling part in order to rotate the sending/pulling part by the first drive source is different from the rotational speed to be transmitted to the sending/pulling part in order to rotate the sending/pulling part by the second drive source, the extension/contraction part is extended or contracted.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/218,862Filed 31 Mar 2021
Priority: JP 2020-08013730 Apr 2020
Published: 4 Nov 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16H 19/0618
Comprising flexible members, e.g. an endless flexible member: the flexible member, e.g. cable, being wound on a drum or thread for creating axial…
F16H 9/26
Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members: with members having…
F16H 25/2409
Elements essential to such mechanisms, e.g. screws, nuts: one of the threads being replaced by elements specially formed for engaging the screw or…
F16H 59/38
Inputs being a function of speed: of gearing elements

Family

US 11,486,476 B2Related patent
US 2021/0341040 A1This patent

From the US filing history. Foreign family members aren’t listed.

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