DRIVE UNIT

• US 20200131822A1
• Filed: 10/25/2019
• Published: 04/30/2020
• Est. Priority Date: 10/26/2018
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company), Mitsuba Corporation
• Original Assignee: Mitsuba Corporation
• Inventors: URANO, Yoshitaka, GOTO, Joji, KAGAWA, Kenichiro, FUKAHORI, Takashi, SHINGU, Hiroshi
• Granted Patent: US 11,168,500 B2
• Time in Patent Office: Days
• CPC Class Codes: B60J 5/047 characterised by the opening or closing movement
• CPC Class Codes: E05D 15/0626 for wings suspended at the top
• CPC Class Codes: E05F 1/1008 with a coil spring parallel with the pivot axis E05F1/1207 takes precedence
• CPC Class Codes: E05F 1/16 for sliding wings
• CPC Class Codes: E05F 15/646 allowing or involving a secondary movement of the wing, e.g. rotational or transversal
• CPC Class Codes: E05F 7/08 Means for transmitting movements between vertical and horizontal sliding bars, rods, or cables means for transmitting movements between vertical and horizontal sliding bars, rods, or cables, for the fastening of wings E05C9/24 ; with means for transmitting movements between vertical and horizontal sliding bars, rods or cables E05D15/5208
• CPC Class Codes: E05Y 2201/654 Cables
• CPC Class Codes: E05Y 2201/664 Drums
• CPC Class Codes: E05Y 2800/26 Form, shape
• CPC Class Codes: E05Y 2900/531 Doors

Abstract

A large diameter portion is provided on one side of a closing side drum in an axial direction, a small diameter portion having a diameter gradually decreasing from the large diameter portion to the other side of the closing side drum is provided on the other side of the closing side drum, a partition wall disposed between adjacent small diameter cable grooves in the axial direction of the closing side drum to prevent a closing side cable from slipping out of the small diameter cable grooves is provided in the small diameter portion. Accordingly, the thick partition wall provided in the small diameter portion can reliably prevent the closing side cable from slipping out (derailing) from the small diameter cable grooves even when a winding position of the closing side cable on the closing side drum is changed and transferred from the large diameter portion to the small diameter portion.

Claims

1. A drive unit driving an opening and closing body that opens and closes an opening portion, the drive unit comprising:

a cable pulling the opening and closing body;

a drum having a cable groove on which the cable is wound;

an electric motor rotating the drum;

a large diameter portion provided on one side of the drum in an axial direction;

a small diameter portion provided on the other side of the drum in the axial direction having a diameter gradually decreasing from the large diameter portion to the other side of the drum in the axial direction; and

a slip preventing wall provided in the small diameter portion, disposed between adjacent cable grooves in the axial direction of the drum, and preventing the cable from slipping out of the cable grooves.

2. The drive unit according to claim 1,

wherein a height dimension of the slip preventing wall in a radial direction of the drum is greater than a diameter dimension of the cable.

3. The drive unit according to claim 1,

wherein a spacing of adjacent cable grooves of the small diameter portion in the axial direction of the drum is greater than a spacing of adjacent cable grooves of the large diameter portion in the axial direction of the drum.

4. The drive unit according to claim 1,

wherein the drum is rotatably accommodated in a housing,

wherein a covering wall partially covering the drum from an outside in the radial direction of the drum is provided inside the housing, and

a gap dimension of a gap between the slip preventing wall and the covering wall is smaller than the diameter dimension of the cable.