US 11,879,508 B2Granted

Clutch for preventing backdrive

AssigneesHyundai Motor Company, Kia Corporation

InventorsSang Woo Hwang, Youngil Sohn, Sehyun Chang, Min Jun Kim

Life of this patent

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Abstract

A clutch for preventing backdrive, includes a housing: a cover portion positioned on one end portion of the housing; an external shaft, at least one portion of which is positioned inside the housing, the other end portion thereof passing through the housing; a rocker positioned between the housing and the cover portion and fastened to the external shaft; an input shaft, one end portion thereof being inserted into an opening portion in the locker, and the other end portion thereof passing through the cover portion; and a gear portion positioned on the housing or the cover portion so that a serrated portion positioned on the locker is selectively brought into contact with the gear portion, wherein rotation of the rocker is restricted so that the external shaft is rotated along a rotation direction of the input shaft.

Claims12

Dependent claims

A clutch for preventing backdrive, the clutch comprising:

a housing:
a cover portion positioned on one end portion of the housing;
an external shaft at least one portion of which is positioned inside the housing, a first end portion thereof passing through the housing, and a second end portion thereof being fastened to a locker;
an input shaft, a first end portion thereof to be inserted into an opening portion in the locker, and a second end portion thereof passing through the cover portion;
a gear portion positioned on the housing or the cover portion so that a serrated portion positioned on the locker is selectively brought into contact with the gear portion;
and
a magnetic unit providing a force so that the gear portion is brought into contact with the serrated portion,
wherein the external shaft and the locker are configured to be rotated along a rotation direction of the input shaft, and
wherein the gear portion is brought into contact with the serrated portion by the magnetic unit to deal with rotation of the external shaft, and thus configured to restrict the rotation of the locker.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/071,319Filed 29 Nov 2022
Priority: KR 10-2022-003173715 Mar 2022
Published: US 2023/0296143 A121 Sep 2023
Granted: 23 Jan 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F16D 27/09
With electromagnets incorporated in the clutch, i.e. with collecting rings: and with interengaging jaws or gear-teeth
F16D 41/04
Freewheels or freewheel clutches: combined with a clutch for locking the driving and driven members
F16D 27/01
Magnetically- or electrically- actuated clutches; Control or electric circuits therefor: with permanent magnets
F16D 41/18
Freewheels or freewheel clutches: with non-hinged detent