Chain drive of bottom-fixed blind curtain

Abstract

The invention provides a chain drive mechanism for a bottom-positioned venetian blind, which consists of a left metal chain, a right metal chain, a left upper sprocket wheel, a right upper sprocket wheel, a left lower friction wheel, a right lower friction wheel, a drive shaft, a trip shaft, a support, a moving groove and a chain chute, wherein one end of the left metal chain is fixed on the leftupper part of a window frame, while the other end is a free end; after the left metal chain rounds the left lower friction wheel and the left upper sprocket wheel, the left metal chain is freely suspended in the chain chute; one end of the right metal chain is fixed on the right upper part of the window frame, while the other end is a free end; after the right metal chain rounds the right lower friction wheel and the right upper sprocket wheel, the right metal chain is freely suspended in the chain chute; the left lower friction wheel and the right lower friction wheel are arranged on two ends of the trip shaft; the trip shaft passes through the support and is supported by the support; the support is connected with the moving groove; the left upper sprocket wheel and the right upper sprocket wheel are arranged on two ends of the drive shaft; and when a power system of the venetian blind starts to run, the whole drive mechanism of the venetian blind starts to work. The chain drive mechanism has the advantages of simple and easy operation and convenient use.

Description

(1) Technical field [0001] The invention relates to a chain transmission mechanism of a blind for decoration, in particular to a chain transmission mechanism of a bottom-mounted blind used for sealing in hollow glass. It belongs to the technical field of decoration. (2) Background technology [0002] Venetian blinds are widely used because of their adjustable light function. But the venetian blinds of existing various horizontal blades basically all belong to top-mounted type, that is to say that venetian blinds all concentrate on the top when drawing in. When this type of structure is used, it is difficult to meet the different needs of people in many occasions. For example, when people are active indoors, in order to achieve the maximum indoor lighting effect and block the sight of people outside the room, it is hoped that the curtains can only block the sight line of the lower part of the window and ensure the lighting of the upper part of the window. This is difficult...

AI Technical Summary

Problems solved by technology

Chinese patent application No. 02151751.7, titled "A Kind of Drawstring Venetian Blind", and Japanese Patent Application No. JP8082174, titled "VERTICALLY OPENABLE / HORIZONTALLY OSCILLATING BLIND" and other patent applications, all basically achieve the function of controlling the bottom of the blind. The purpose of raising the blades and turning the blades, but because the curtain ropes need to be pulled and controlled separately, it is easy to cause the curtain blades to be arranged in an unparallel manner in actual use, which affects its use effect

[0004] In terms of the control of the rotating shaft of the electrically controlled venetian blind, especially the venetian blind that can be installed in the hollow glass, the Chinese patent application number 00106691.9, the title is "A Method for Making a Shaft Adjustable Venetian Blind", the Chinese patent application number 00235056.4, The name is "Rotating Shaft Adjustable Venetian Curtain", the Chinese patent application number is 03106508.2, the name is "A Bottom Blade Type Venetian Curtain", the European patent application number is EP1213437, the name is "Lamellar blind with tilting mechanism", the international patent application number is WO2007064215, The name is "A SYSTEM FOR ELEVATING AND LOWERING A LIGHT AND / OR VISION IMPEDING ARRANGEMENT", although it solves the problem of the blinds rising from bottom to top and the blades rotating and adjusting at any position, but due to the complex structure and inconvenient transmission, it takes up Large space, especially in the use of sealed insulating glass, there are certain difficulties, it is necessary to make further improvements

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