Friction device for roll-up curtains and the like

A technology for friction devices and curtains, which can be used in door/window protection devices, windows/doors, building components, etc., and can solve problems such as falling curtains that cannot be solved

Inactive Publication Date: 2006-07-26
GENINGS ITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The aforementioned supporting devices also perform the additional task of reducing the fall of the curtain, but obviously, they do not in themselves solve the disadvantage that the curtain may fall during deployment

Method used

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  • Friction device for roll-up curtains and the like
  • Friction device for roll-up curtains and the like
  • Friction device for roll-up curtains and the like

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] With reference to the above figure, numeral 1 represents a tubular roller on which curtain 2 is rolled.

[0036] The roller 1 is rotatably supported on a horizontal axis by a corresponding bracket 3 which is integral with the fixed structure.

[0037] One end of the roller 1 is pressed against the connection combination of the reducer, and the connection combination of the reducer is represented by 4 as a whole.

[0038] In more detail, the roller 1 is connected in a prismatic way to the cup-shaped part 5 which rotates with the roller 1 therewith.

[0039] The head 6 is inserted in the cavity formed in the cup-shaped part 5 and is rigidly fastened to the support 3 of the fixed structure by connection with the prismatic appendage 7 of the part 5 .

[0040] As described in detail in European patent EP0900314, the head 6 is characterized by axial tooth-shaped protrusions which engage a number of planet gears carried by the planet wheel loading member 8 and which are made ...

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PUM

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Abstract

A friction device (10), applied to roll-up curtains and the like, includes a tubular roller (1), on which the curtain (2) rolls up, and which is rotatably carried on a horizontal axis. The friction device (10) includes a threaded shaft (9), situated axially inside the roller (1) and connected to the roller (1) by interposition of an angular speed reducer group (4). A body (11), mounted sliding axially inside the roller (1), is screw-coupled with the threaded shaft (9), so as to translate axially due to the shaft (9) rotation during unrolling or rolling up of the curtain (2) on the roller (1). One or more elastic members (12), subjected to pressure or counter-thrust, are compressed, on opposite ends, between abutment means (13) and a surface of the body (11), to determine a friction effect, which varies as a function of the rotation direction of the roller (1).

Description

technical field [0001] The field of technology to which the present invention relates relates to roller blinds, which are used on windows and the like for shading, protection or decoration. Background technique [0002] Roller shades are usually rolled on rollers which are rotatably mounted on a horizontal axis on the inside of a matching box which sits on top of the window. [0003] Axial rotation of the rollers determines the rolling and unrolling of the shade. [0004] According to known solutions, the roller blinds are operated manually during rolling up and unrolling. For this purpose, the head of the roller has a pulley, characterized by grooves, which engage the operating chain. [0005] One of the disadvantages of such roller blinds is the risk of falling during unrolling, ie it falls too quickly due to the weight of the blind. [0006] In particular, the falling speed of the curtain increases rapidly during deployment. Obviously, this disadvantage will be felt e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E06B9/44E06B9/60E06B9/62E06B9/80
CPCE06B2009/807E06B9/44E06B9/60
Inventor 卡尔·埃米尔·费利克斯·明德
Owner GENINGS ITAL
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