Magnet-free drive for venetian blinds for double-glazed built-in blinds

Abstract

The invention discloses a shutter blind magnet-free driving device for a double-layer hollow glass built-in shutter, and belongs to the technical field of sunshade hollow glass products. The shutter blind magnet-free driving device comprises an inner control mechanism and an outer control mechanism, and is characterized in that the inner control mechanism comprises a box body, a box cover, a synchronous belt wheel, a synchronous belt and a lifting pulling rope driving wheel; a box cavity is formed in the box body, the synchronous belt wheel is arranged in the box cavity and located at the upper portion, one end of a synchronous belt wheel shaft is supported on the box cover, and the other end of the synchronous belt wheel shaft is supported on the cavity bottom wall of the box cavity; two synchronous belt wheel gears are formed at the portions corresponding to the two sides of the synchronous belt wheel respectively, the lifting pulling rope driving wheel is arranged in the box cavity and located at the lower portion, and two driving wheel gears are formed at the portions corresponding to the two sides of the lifting pulling rope driving wheel respectively; the outer control mechanism comprises a protective cover, a friction disc, a bead chain wheel shaft, a bead chain wheel shaft hub, a bead chain and a bead chain wheel shaft base. The manufacturing cost is reduced; the use requirements of different physical ability persons can be met; assembling is convenient and rapid, and the assembling effect is good.

Description

technical field [0001] The invention belongs to the technical field of sunshade hollow glass products, and in particular relates to a venetian blind driving device without magnets for double-layer hollow glass built-in venetian blinds. Background technique [0002] The double-layer hollow glass built-in blinds mentioned above refer to the construction of a venetian blind that can be raised and lowered as needed in two pieces of glass (inner glass and outer glass) that are arranged in a face-to-face state and that seal the surrounding edges. A window belonging to the category of sunshade hollow glass products. This kind of window has the following self-evident advantages: good heat insulation, so as to reflect the energy saving of the building; excellent sound insulation, so as to avoid the disturbance of external noise; Expected bright effect; through the adjustment of the deflection angle of the venetian blinds, the required indoor lighting requirements can be obtained, pr...

AI Technical Summary

Problems solved by technology

Although the double-layer hollow glass built-in blinds of this structural system can meet the actual use requirements, there are the following shortcomings: one, because the number of one group of magnets of the inner and outer control mechanisms is at least three or more, and the magnets are strong magnets. Magnet, and because the price of this magnet is very expensive, thereby cause blinds to lose economy and cheapness; Second, because the volume of inner and outer control mechanism is limited, thereby be unfavorable for the pinching during operation, especially for old people produce certain The operation is confusing; third, because a group of magnets are respectively embedded in the respective shells of the inner and outer control mechanisms made of plastic, and because the magnets and the shells are made of different materials, the coefficients of thermal expansion and contraction are different and different Larger, but also due to the natural aging and deformation of the plastic over time, after a certain period of use, the control ability of the shell to the magnet gradually weakens, and even the phenomenon of magnet dislocation and falling off affects the interaction between the inner and outer control mechanisms. Magnetic attraction effect; Fourth, because the magnet is a rare earth permanent magnet doped with rare earth elements, and rare earths are valuable strategic resources, there is a problem of large resource consumption

[0006] The "A Built-in Magnetically Controlled Hollow Venetian Blind" recommended by the utility model patent authorization announcement number can save the consumption of magnets to a certain extent and is easy to operate. After reading the 8th line on page 3, it is not difficult to find the following shortcomings: First, because the structural system of the built-in box as the inner control mechanism needs to use the built-in magnetic control mechanism, and the structure system of the external box as the external control mechanism is also the same. It is necessary to use an external magnetic control mechanism so that when the external box is operated, the external magnetic control mechanism drives the built-in magnetic control mechanism (see the last paragraph on page 3 of the manual), so the internal and external control mechanisms have not yet got rid of the magnetism that relies on magnets Second, because the length of the external box as the external control mechanism is equal to the width of the glass, it is bulky on the one hand and difficult to install on the other hand

Because it is not limited to the above-mentioned factors, it is determined that the venetian blind driving device introduced in this patent is not a real magnet-free driving device.

Images