A lifting and turning device for single-time two-point synchronous variable-pitch blinds

Abstract

The invention discloses a lifting overturning device for a single dichotomy synchronous variable pitch shutter. The lifting overturning device comprises a torsional spring sleeve, an overturning drum mechanism, a rolling wheel mechanism, an incomplete gear mechanism and a base. The torsional spring sleeve and the overturning drum mechanism are rotatably connected to the base and are in transmission connection through the rolling wheel mechanism, the rolling wheel mechanism is in transmission connection with the incomplete gear mechanism, and the incomplete gear mechanism is connected with the overturning drum mechanism through an intermittent transmission mechanism. A main ladder band and an auxiliary ladder band which control adjacent blades of the shutter to be split or integrated oppositely are wound around the overturning drum mechanism, the top end of the main ladder band is fixed to the overturning drum mechanism, the top end of the auxiliary ladder band is connected to the rolling wheel mechanism, and the torsional spring sleeve is provided with a power input end. The lifting overturning device can control the blades of the shutter to rotate towards the outdoor side or the indoor side until the shutter is closed, so that the light guide direction of the variable pitch shutter can be well adjusted in a range between the position near an window and the deep position of a room.

Description

technical field [0001] The invention relates to a roller accessory of a blind, in particular to a lifting and turning device for a single double-point synchronous variable-pitch blind. Background technique [0002] The invention with the publication number CN101818616B discloses a variable-pitch louver technical scheme, and the invention with the publication number CN102839909B further improves the technical scheme of CN101818616B, and proposes the single two-point, three-time four-point and double two-point variable-pitch blinds. concept, in addition, there are a series of inventions with publication numbers CN102808577B, CN102839906B, CN102900347B, CN103266847B, CN105041173A disclosing the reel mechanism and reel system related to the variable pitch blinds. A common feature is that the pitch of the blades of the variable-pitch blinds can only be rotated and closed to the outdoor side after being changed to the minimum pitch, but not to the indoor side, which causes the var...

AI Technical Summary

Problems solved by technology

[0003] The existing louver blades using the variable pitch louver roller system can only be rotated and closed to the outside of the room after being changed to the minimum pitch, but cannot be rotated and closed to the inside of the room, resulting in the weakening of the function of the louvers. To overcome this defect, the present invention provides a A single two-point synchronous variable-pitch shutter lifter, which can not only control the change of the blade pitch of the shutter, but also control the blades of the shutter to rotate to the outdoor side or the indoor side until they are closed, so that the light guide direction of the variable-pitch blinds is in the vicinity of windows and rooms. The range between depths can be better adjusted

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