Patent ID: 8646348
Filing Date: 2014-02-11
Classification: F16H,Y10T

Abstract:
1. An electric push rod and release mechanism combination structure, comprising: an electric push rod assembly, said electric push rod comprising a housing having an accommodation chamber defined therein, a reducing gear set accommodated in said accommodation chamber of said housing, a drive unit adapted for rotating said reducing gear set, a transmission device, said transmission device comprising a transmission screw rod coupled to and rotatable by said reducing gear set, a retractable tube set mounted on said transmission screw rod and retractable linearly relative to said housing upon rotation of said transmission screw rod, and a coupling disposed at an outer side relative to said retractable tube set; and a release mechanism connected between said retractable tube set and said coupling of said electric push rod assembly, said release mechanism comprising a mounting socket, a connection socket, a torsion spring, a clutch module and an operating device, said mounting socket being fastened to a distal end of an inner tube of said retractable tube set remote from said nut, said connection socket being movably received in said mounting socket and connectable to said coupling, said torsion spring being mounted around said mounting socket and said connection socket to hold down said mounting socket and said connection socket, said clutch module being mounted on said mounting socket, said clutch module comprising a first ring member rotatable to expand said torsion spring and to further release said mounting socket and said connection socket from the constraint of said torsion spring, said first ring member comprising an actuating portion, a second ring member movably capped onto said first ring member, said second ring member having a side opening, a lug fixedly located on the periphery of said second ring member around the side opening of said second ring member, said operating device comprising an operating handle pivotally connected to said lug and a driving member suspending in said side opening inside said lug and connected to said operating handle and engaged with said actuation portion of said first ring member and movable by said operating handle to rotate said first ring member, and a stop member adapted for limiting the angle of rotation of said operating device relative to said second ring member and said lug.