Rolling door with adjustable spring torque

Abstract

The invention provides a rolling door capable of adjusting spring twisting force, comprising a rolling door body and an adjusting device. The rolling door body comprises a shaft lever, a wheel disc and at least one spring. The wheel disc respectively sleeves two sides of the shaft lever; two ends of the spring are respectively arranged to the shaft lever and wheel disc. The shaft lever can rotate with a self rotary shaft as an axis to release spring twisting force or screw tightly a spring. The adjusting device comprises a one-way gear and a fixed block, wherein the one-way gear is radially arranged to the shaft lever along the shaft lever, the one-way gear and the shaft lever can rotate synchronously, the one-way gear is provided with a plurality of double wedges along a radial ring of the shaft lever, and the double wedges respectively form a tooth surface and a tooth back along the peripheral direction of the one-way gear. When the spring releases twisting force to allow the shaft lever to possess a rotating tendency, the fixed block is abutting the tooth surface of the double wedges to resist rotation of the shaft lever; when the shaft lever rotates to screw tightly the spring, the tooth back of the double wedges pushes the fixed block to separate from the fixed block to adjust spring twisting force in a mode of rotating the one-way gear by a user, and the breaking effect using a one-way gear is excellent.

Description

technical field [0001] The invention mainly discloses a rolling door capable of adjusting the spring torsion, especially a rolling door which uses a one-way gear to make the rolling door shaft only rotate in one direction to adjust the spring torsion. Background technique [0002] Generally, the existing iron rolling doors all have a mechanism that uses the torsion of the spring to make the iron rolling door roll back. There is a rolling bar in the rolling door, and a rolling wheel is respectively set on the two ends of the rolling bar. The two rolling wheels It can rotate relative to the rolling bar, and the two rolls can be used to wind the rolling door together to control the rising or falling of the rolling door. There is a torsion spring between the rolling bar and the rolling wheel, and the two ends of the torsion spring The rolling bar and the reel are respectively connected, and the torsion spring is twisted to have a predetermined torque, which can provide the power...

AI Technical Summary

Problems solved by technology

[0004] However, after the rolling door spindle is used for a long time, the elastic fatigue of the rolling door spring will inevitably occur. At this time, the torsion of the rolling door spring must be adjusted so that the rolling door spring can provide enough auxiliary force to make the rolling door It is not easy to adjust the torsion of the rolling door spring when the rolling door spindle with this structure is used. You must open the spindle box of the rolling door spindle and directly adjust the fixing parts on the spindle to adjust the rolling door spring. Torque effect, quite inconvenient to use

Images