Door opening/closing device

• US 20060137248A1
• Filed: 12/22/2005
• Published: 06/29/2006
• Est. Priority Date: 12/28/2004
• Status: Active Grant

• Current Assignee: Mitsui Kinzoku Act Corporation (Mitsui Mining & Smelting Co., Ltd.)
• Original Assignee: Mitsui Mining and Smelting Company Limited
• Inventors: Ichinose, Mikio
• Granted Patent: US 8,479,445 B2
• Time in Patent Office: Days
• US Class Current: 49/340
• CPC Class Codes: E05F 15/611 for swinging wings
• CPC Class Codes: E05F 15/63 operated by swinging arms
• CPC Class Codes: E05Y 2201/216 Clutches
• CPC Class Codes: E05Y 2201/246 by motors, magnets, springs or weights
• CPC Class Codes: E05Y 2201/462 Electromagnets
• CPC Class Codes: E05Y 2201/618 Transmission ratio variation
• CPC Class Codes: E05Y 2201/71 Toothed gearing
• CPC Class Codes: E05Y 2800/00 Details, accessories and auxiliary operations not otherwise provided for

Abstract

A device for controlling a door operated by a motor includes an opening/closing mechanism that opens and closes the door, and a gear mechanism that includes a plurality of tooth units each of which has different mesh and that conveys a torque of the motor to the opening/closing mechanism. The tooth units include a low-torque tooth unit that convey a relatively low torque, and a high-torque-tooth unit that conveys a relatively high torque. The torque conveyed to the opening/closing mechanism is changed by selecting a tooth unit based on a position of the door at the time of starting an opening or closing operation of the door.

Claims

1. A device for controlling a door operated by a motor, comprising:

an opening/closing mechanism configured to open and close the door; and

a gear mechanism including a plurality of tooth units each of which has different mesh, and configured to convey a torque of the motor to the opening/closing mechanism, wherein the torque conveyed to the opening/closing mechanism is changed by selecting a tooth unit based on a position of the door at the time of starting an opening or closing operation of the door.

2. The device according to claim 1, wherein

the tooth units include

a low-torque tooth unit configured to convey a relatively low torque;

and

a high-torque tooth unit configured to convey a relatively high torque, and

the low-torque tooth unit is meshed when the door is positioned in a region near a full-closed position and the high-torque tooth unit is meshed when the door is positioned in a remaining region not near the full-closed position.

3. A device for controlling a door operated by a motor, comprising:

an opening/closing mechanism configured to open and close the door;

a gear mechanism including a plurality of tooth units each of which has different mesh, and configured to convey a torque of the motor to the opening/closing mechanism, wherein the torque conveyed is changed by selecting a tooth unit based on a position of the door at the time of starting an opening or closing operation of the door; and

a controller configured to control the motor in such a manner that a rotation speed of the motor gradually changes while the tooth units are being switched.

4. The device according to claim 3, wherein

the tooth units include

a low-torque tooth unit configured to convey a relatively low torque;

and

a high-torque tooth unit configured to convey a relatively high torque, and

the low-torque tooth unit is meshed when the door is positioned in a region near a full-closed position and the high-torque tooth unit is meshed when the door is positioned in a remaining region not near the full-closed position.