Drive motor capable of being separated from rotation member when rotation member is restrained

Patent metadata

Field	Value
Publication number	US-10024367-B2
Application number	US-201615376967-A
Country	US
Kind code	B2
Filing date	Dec 13, 2016
Priority date	Sep 12, 2016
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A drive motor capable of being separated from a rotation member when the rotation member is restrained, the drive motor being configured to be coupled with the rotation member to transmit rotating force to the rotation member, and may include a power transmission control device provided on a junction between the drive motor and the rotation member and configured such that the rotating force can be transmitted from the drive motor to the rotation member, and such that when the rotation member is restrained and rotation thereof is not allowed, the power transmission control device is elastically deformed so that the coupling of the rotation member with the drive motor is released and only the drive motor is allowed to be rotated.

First claim

What is claimed is:

1. A drive motor configured for being separated from a rotation member when the rotation member is restrained, the drive motor being configured to be coupled with the rotation member to transmit rotating force to the rotation member, and comprising:
a power transmission control device provided on a junction between the drive motor and the rotation member,
wherein the rotating force is configured to be transmitted from the drive motor to the rotation member,
wherein when the rotation member is restrained and a rotation thereof is not allowed, the power transmission control device is elastically deformed and the coupling of the rotation member with the drive motor is released and only the drive motor is configured to be rotated, and
wherein the power transmission control device is coupled to a rotation shaft of the drive motor and integrally rotated along with the rotation shaft,
wherein the power transmission control device is coupled to the rotation member,
wherein when the rotation member is in an unrestrained state, the rotating force of the drive motor is transmitted to the rotation member, and when the rotation member is in a restrained state, the power transmission control device is elastically deformed and the coupling of the power transmission control device with the rotation member is released,
wherein when the rotation member is changed from the restrained state to the unrestrained state, the power transmission control device is elastically restored and enables the rotating force of the drive motor to be transmitted to the rotation member, and
wherein the power transmission control device includes:
a coupling clip including a frame part having a polygonal shape and coupled with the rotation member, a pair of inward extension portions formed by cutting a portion of the frame part and extending cut portions of the frame part to be parallel with each other toward a center of the coupling clip, and a coupling part formed on end portions of the inward extension portions to hold the rotation shaft of the drive motor.

2. The drive motor of claim 1 , wherein a portion of a circumferential outer surface of the rotation shaft has a planar surface, and the coupling part is formed to contact with the planar surface of the rotation shaft so that the coupling part is coupled to the rotation shaft.

3. The drive motor of claim 2 , wherein the planar surface includes planar surfaces formed on the rotation shaft at positions spaced apart from each other at an angular interval of 180°.

4. The drive motor of claim 1 , wherein the frame part, the inward extension portions and the coupling part form a single closed loop.

5. The drive motor of claim 1 ,
wherein a locking member is integrally mounted on the rotation member, the locking member including locking depressions formed to receive junctions between sides of the frame part, and
wherein while the rotation member is in the restrained state, each time the frame part is rotated by a predetermined angle, the locking member and the coupling clip are coupled to each other.

6. The drive motor of claim 5 , wherein a number of the locking depressions is larger by an integer multiple than a number of sides of the frame part.

7. The drive motor of claim 5 , wherein when the rotation member is in the restrained state, the frame part is repeatedly deformed and restored in the locking member wherein the coupling of the rotation member with the drive motor is released.

8. The drive motor of claim 1 , wherein the rotation member includes a cooling fan for cooling coolant of an engine of a vehicle, and the drive motor includes a fan motor for rotating the cooling fan.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Tae-Wan

Classifications

• F04D29/26

  Rotors specially for elastic fluids · CPC title

• H02K7/003

  Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28) · CPC title

• F16D7/048 Primary

  with parts moving radially between engagement and disengagement (F16D7/10 takes precedence) · CPC title

• F04D29/263 Primary

  mounting fan or blower rotors on shafts · CPC title

• F04D29/053

  Shafts · CPC title