Electric and mechanical stretching apparatus for movable sofa

• US 9,756,949 B2
• Filed: 04/16/2014
• Issued: 09/12/2017
• Est. Priority Date: 12/24/2013
• Status: Active Grant

• Current Assignee: Remacro Machinery & Technology (Wujiang) Co., Ltd.
• Original Assignee: Remacro Machinery & Technology (Wujiang) Co., Ltd.
• Inventors: Huang, Bruce, Qin, Dick, Li, James, Wang, Daniel, Zou, Jerry, Wu, Lynn
• Primary Examiner(s): Nguyen, Chi Q
• Application Number:
  US14/781,567
• Publication Number:
  US 20160058195A1
• Time in Patent Office: 1,245 Days
• Field of Search: 297 85 M, 297 91, 297 68, 2973611, 2972592, 297313, 297325, 297 76, 29736211
• CPC Class Codes: A47C 1/031 having coupled concurrently adjustable supporting parts
• CPC Class Codes: A47C 1/032 the parts being movably-coupled seat and back-rest A47C1/035 takes precedence
• CPC Class Codes: A47C 1/03211 by electric motors
• CPC Class Codes: A47C 1/0342 in combination with movable backrest-seat unit or back-rest
• CPC Class Codes: A47C 1/0345 characterised by foot-rests actuated by lazy-tongs
• CPC Class Codes: A47C 1/0355 actuated by linkages, e.g. lazy-tongs mechanisms
• CPC Class Codes: A47C 17/04 Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
• CPC Class Codes: A47C 17/86 Parts or details for beds, sofas or couches only not fully covered in a single one of the sub-groups A47C17/02, A47C17/04, A47C17/38, A47C17/52, A47C17/64, or A47C17/84; Drawers in or under beds
• CPC Class Codes: Y10T 74/20 Control lever and linkage systems

Abstract

The invention is an electromechanical stretching apparatus of a convertible sofa, which consisting of a mechanical stretching apparatus and an electric actuator, the mechanical stretching apparatus being provided with an electrically-driven connecting rod, wherein, the electric actuator consists of a motor, a motor connecting tube, a motor movable slider, and a motor head fixing part, the motor adopted is a motor with a guide rail, the motor movable slider is installed on the guide rail of the motor, the motor head is rotationally connected through a second rotor shaft to the motor head fixing part fastened on the electrically-driven connecting rod, the motor connecting tube is connected to the motor movable slider through a first rotor shaft and the motor connecting tube is fastened on the mechanical stretching apparatus. The said motor connecting tube is fastened on a linkage part of the mechanical stretching apparatus. The said first rotor shaft and the second rotor shaft are both a bolt. By changing the electronic driving device, the invention increases automaticity and comfort of the convertible sofa, and improves installation, removal, maintenance, and operation efficiency of an electric actuator of the convertible sofa.

Claims

1. An electromechanical stretching apparatus of a convertible sofa, consisting of a mechanical stretching apparatus and an electric actuator, the mechanical stretching apparatus being provided with an electrically-driven connecting rod, wherein,

the electric actuator consists of a motor, a motor connecting tube, a motor movable slider, and a motor head fixing part, the motor adopted is a motor with a guide rail, the motor movable slider is installed on the guide rail of the motor, the motor head is rotationally connected through a second rotor shaft to the motor head fixing part fastened on the electrically-driven connecting rod, the motor connecting tube is connected to the motor movable slider through a first rotor shaft and the motor connecting tube is fastened on the mechanical stretching apparatus.

2. The electromechanical stretching apparatus of a convertible sofa as in claim 1 wherein said motor connecting tube is fastened on a linkage part of the mechanical stretching apparatus.

3. The electromechanical stretching apparatus of a convertible sofa as in claim 1 or 2 wherein the first rotor shaft and the second rotor shaft are both a bolt.