Clutch-mounted door lifter capable of being pushed and pulled manually

Abstract

The invention provides a clutch-mounted door lifter capable of being pushed and pulled manually. The door lifter comprises a shell, a motor and a feed screw nut pair. The motor is arranged inside the shell, drives a lead screw to rotate and then drives a retractable rod in which a nut is embedded to do linear movement. The door lifter is characterized in that a motor shaft is connected with a worm, the worm is meshed with a worm wheel in clearance fit with a clutch shaft, the worm wheel is connected with the clutch shaft through a clutch device, a clutch piece of the clutch device can be combined with or separated from the worm wheel, the clutch shaft is further provided with a drive bevel gear which is meshed with a driven bevel gear on the end portion of the lead screw, and a thread on the lead screw is a multiple thread. Automation and manual operation of the door lifter are achieved, a door body can be pushed and pulled manually through the separation of the clutch device, the occurrence that the door cannot be closed when an automatic door opening system is blacked out or breaks down is avoided, the structure is simple, and working is reliable.

Description

Technical field [0001] The invention relates to a door opener, in particular to a flat door opener with a clutch that can be manually pushed and pulled. Background technique [0002] Most factories and homes now use electric door openers. In addition to traditional track sliding electric doors, side-hung door openers that can rotate the door around the door axis are also appearing on the market. The current swing door machine includes a shell, a motor, a screw nut pair, a telescopic rod and a controller. The motor is installed in the shell and is electrically connected to the controller. The rear end of the shell is opposite to the wall behind the door shaft. Hinged, the front end of the housing supports the end of the screw rod through a bearing. The threaded section of the screw rod is located outside the housing. The screw rod is screwed with the plastic nut embedded in the telescopic rod. The front end of the telescopic rod is connected to the back of the door body through a ...

AI Technical Summary

Problems solved by technology

However, the motor of this kind of swing door machine is generally directly connected to the screw rod through a coupling, and the screw rod is directly driven by the motor to rotate. When a power failure or failure occurs, the door cannot be opened or closed manually. The pin is removed so that the telescopic rod is not connected to the door body, and the door opener is rotated backward around the rear end of the housing to avoid blocking the opening of the door body. The disadvantage is that it is inconvenient to operate, and only the rear end of the door opener is supported on the wall. Most of them are suspended in the air, and objects need to be used to support or suspend the overhang of the door opener

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