Handle opening position locking mechanism of airplane cabin door

The invention provides an aircraft cabin door handle opening position locking mechanism, and belongs to the field of aircraft cabin door mechanisms. A handle grab handle and a guide seat are installed on the two sides of the handle, the handle grab handle penetrates into the guide seat, a spring pin is inserted into the handle grab handle, the movement amplitude of the spring pin is limited through a connecting pin and a long round hole, a spring is sleeved on the spring pin, the spring pin is pressed in an inner cavity of the handle grab handle, and the spring bolt mechanism is installed on the cabin door structure. A spring bolt in the spring bolt mechanism goes deep into an inner cavity of the handle grab handle under the action of a spring to achieve locking, and a spring pin is pressed to push the spring bolt to retreat from the handle grab handle to achieve unlocking. Rapid and direct locking and convenient unlocking are achieved, the problems that an existing mechanism is not locked in time, the lockin