RU142U1 - Light protection device - Google Patents

Abstract

A light-protective device of a lifting-rotary type with a horizontal arrangement of lamellas, comprising a housing, a mechanism for lifting the lamellas with lifting rods and clamping elements, and a rotation mechanism for the lamellas with turning rods and a rotary shaft with drums mounted on it, laid in supports, characterized in that, for the purpose of simplifying the design while improving operational characteristics, the clamping elements of the lifting mechanism are made in the form of levers with holes at the ends through which the lifting rods are passed and having an eccentric a working surface located between these holes and the swing axis, and the lamella rotation mechanism comprises a carriage with rotation rods fixed to it, moving along two guides, one of which has a helical surface, and a roller that bends around one of the rods, and the carriage is located between roller and holes in the housing for the passage of rods, and the magnitude of the angle of elevation of the helical surface of the guide, comprising a screw pair with the carriage, is selected with a multiple excess of the friction angle in this pair.

Description

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LIGHT PROTECTION DEVICE /

The proposed device relates to the construction, namely, to the construction of light-protective devices such as blinds installed in the light apertures of buildings for any purpose.

Many devices of a similar designation are known. For example, a sun-shutter hoisting device comprising a horizontal shaft with swing coils enveloped by rods

turning, soy. D1 / nyayayuschimi shading plate (lamellas) with the lower rail, and attached to the lower rail two po.ppema. On the shaft

mounted drive that has set foot. A hole is made in the disk, located eccentrically relative to the longitudinal axis of the drive, through which traction rods are passed, enveloping the hub of the disk from opposite sides. Each of the lifting rods is bent through its own roller and passed through the grooves of the slats to the attachment point with the lower rail. A shaft with coils, bearings and a disk, as well as rollers, are placed in a bearing housing. The free .con1da lifting rods are released and equipped with handles. (A.S. USSR 1-503989, ShSh E Obv. 9/32, publ. B.I. No. 7, 1976).

By exerting a force action simultaneously on both ends of these rods, it is possible to raise or lower the lamellas together with the lower rail, and acting on one of the ends, turn the lamellas in horizontal planes in the corresponding direction.

This device is simple, since it ensures lamellas are fixed neither in height nor in the angle of their rotation in rogntao steel planes, which determines KOHCIP

Also known devices in which the rise of the lamella) bszga

from one of the pull rods, and the spread of the lamellas - from others -., Such devices can be attributed, for example, to a plate with a weight of 1 weight, from KOTO.P. tsy

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Topiia. The swivel rods are bent through a roller mounted on a worm engaged with a worm sector mounted on a horizontal shaft (German application No. 35I08I7, MKI E Obv 9/32, publ. 1). Such a device provides reliable fixation of the lamellas in any of their positions, determined by the angle of rotation of the lamellas in horizontal planes.

However, this design also does not provide a fixed support for the lamellas in terms of their lifting height. To keep the lamellas at a given height (except for the lowest position), it is necessary to tie the lifting rods to the wall, which introduces certain operational inconveniences.

Also known are blinds containing a housing, a control mechanism for the blinds .3 lifting cords on which the louvres are fixed, inside the housing there are supports for attaching the working shaft, the rotation of which with the help of a drive consisting of an angular gearbox and a wiring connected to it through a cardan joint , the angular position of the louvres is regulated. The movement under the lifting cords is fixed by a vertically floating cogged toothed roller meshed with the toothed inclined surface (patent (W No. 4637445, ШШ Е О В 9/30, publ. 1985). The disadvantages of this design are complicated in the manufacture of the angular gearbox, as well as the inconvenience of using the drive of the linkage fixing mechanism, lifted, because to unlock it, it is necessary to slightly lift the blinds so that the gear roller falls into the lower position and the cords are wedged.

Closest to the proposed device and selected for the prototype is a sun-protection device of a lifting-rotary type, with a horizontal arrangement of petals. It contains a housing, petals freely lying in the suspensions, a rotation mechanism with rods 31Shras; YaShya: zfТ1ее1ршизшодв11аС traction 111111 (bе ЕЕ.154в5х under and to the left лвrteoTKX) B with yank-irrigation gears and extenders between the center and the center and the other forming a free loop, the end of which is fixed on the same

eccentric # B between its axis and working surface (A.s, USSR No. 309108, ShSh Е О В 9/32, publ., B.I. JN 22, I97I).

The disadvantages of this device include the difficulty of implementing the mechanism of rotation of the petals containing the worm gear, and the mechanism of lifting the petals, in which the rods have an additional loop, one of which is attached to the clamp / g clown.

This device has a significant inconvenience in use, because hoist aids can only be operated with two hands. With one hand it is necessary to pull off the clamping eccentric, and with the other hand, it is time to carry out the lift C lowering). In addition, when raising and lowering the blinds, the petals may skew, as lifting rods are not interconnected.

The purpose of the proposed invention is to simplify the design while improving operational characteristics.

This goal is achieved by the fact that in a light-protective device of a lifting-rotary type with a horizontal arrangement of lamellas, comprising a housing, a lifting mechanism with lifting rods and clamping elements, and a rotating mechanism of lamellas with turning rods and a rotary shaft, with drums installed on it, laid in supports, otherwise made clamping elements and the rotation mechanism of the lamellas.

The clamping elements of the lamella lifting mechanism are made in the form of levers with holes at the ends and having an eccentric working surface located between these levers and the swing axis. Through the holes at the ends of the levers, lifting rods will pass.

The lamella rotation mechanism comprises a carriage with rotation rods fixed on it, moving along two guides, and a roller that goes around one of the rods. The carriage is located between the roller and the holes in the housing for the passage of rods. One of these guides has a helical surface and makes up a helical pair with the carriage, moreover, the angle of elevation of the helical surface of the guide is selected with multiple exceeding the angle of friction in this pair.

- s: The execution of the clamping elements of the mechanism for lifting the slats in the form

levers with an eccentric working surface and holes at the end through which the lifting rods are passed, made it possible to simplify the design by reducing the number of working parts, while improving the operational characteristics of the device. The rotation of the clamping elements is controlled directly by the lifting rods, which increases reliability, eliminates the distortion of the slats and improves ease of use.

The execution of the rotation mechanism in the form of a carriage moving along two guides, one of which has a helical surface with an angle

lifting, a much larger angle of friction in a pair of carriage-guides1ЯЦ1Ц, and supplying one of the tie rods to the carriage through an additionally installed roller also allows to simplify the design and improve the operational characteristics of the light-protective device.

The use of a screw pair with a large elevation angle made it possible to perform the surface of the carriage mating with the screw in the form of a groove, which significantly increases manufacturability and reduces the manufacturing cost.

A large angle of elevation made it possible to fulfill the condition of self-braking during the transmission of force in the direction from the rotary shaft to the carriage, which ensures reliable fixation of the lamellas after rotation, and the introduction of an additional roller allows the transmission of movement directly from the rods to the carriage. Due to the large angle of elevation of the guide, the carriage has a large working stroke, which provides smooth adjustment of the angle of rotation of the shaft with tie rods. Helix elevation angle exceeds 45 °. So, in the prototype of the proposed device, the specified angle is greater than 88.

The location of the carriage between the roller and the holes in the housing. For the passage of rods allows you to drag the carriage in both directions, and thereby, deploy the lamellas of the light protection device in both directions.

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The totality of all these features is a new, not described until now B sources of patent and scientific and technical literature. Since the above new distinctive features of the proposed device allow to achieve the goal of the invention set by the authors - to simplify the design while improving operational characteristics, this allows us to conclude that some of the technical characteristics of the known device are improved. This indicates to TON that the proposed device is at a new, more advanced technical level. In other words, the technical level of the proposed device correspond to the inventive step.

The light protection device is illustrated by the following drawings.

In FIG. I shows a longitudinal section of a light protection device as a whole.

In FIG. 2 - node clamp lifting rods, section aa in FIG. I.

In FIG. 3 - node clamp lifting rods in the open position, section Y-i in FIG. I.

In FIG. 4 is a section BB in FIG. I along the axis of the roller for lifting lamellas.

In FIG. 5 is a section BB of FIG. I on the carriage of the mechanism for turning lamellas.

The light-protective device includes a housing I, a set of lamellas 2, a mechanism for lifting the lamellas and a mechanism for turning the lamellas, at least three oprays 3, the drums 4 and one or more rotary shaft 5 placed therein, end caps-brackets b and rail-load 7. Number supports 3 and shafts 5 depends on the width of the light protection device.

The lifting mechanism comprises 8.9 lifting rods, two rollers 10 mounted in supports 3 on axles II C of FIG. I and 4), a bracket 12, mounted on the edge of the housing I, two clamping elements 13, made in the form of levers mounted on a single axis 14 with the possibility of swing (Fig. I and 2).

The clamping elements 13 have openings at the ends for passing 8.9 lifting rods. The working surface of each clamping element 13 is made eccentric relative to the axis of swing 14 and is located between this axis and the hole at the end. For more powerful braking

the eccentric surface 23 of the clamping element 13 can be gear.

The clamping elements 13 together with the bracket Z form a green clamp clamp rods 8.9 lift.

Each of the flexible pull rods 8.9 of the lift is secured by one’s own cat on the load rail 7, passed through p; the central holes of all lamellas 2 and inserted into the internal cavity of the housing I through the window available in the bottom of the support 3, and then thrown through a roller 10 mounted in this support. Next, each of the lifting rods 8.9 inside the housing is passed to the bracket 12 of the clamping unit and passes between the surface of the bracket and the eccentric surface of the clamping element 13. Then the rods are passed through the holes at the ends of the clamping elements 13 and fastened internally by a single handle 15.

The lamella rotation mechanism comprises a carriage 16 moving along two guides 17 and 18 mounted between two extreme supports located at the edge of the housing opposite to the clamp assembly I f of FIG. I, 4, 5). One of the guides has a helical surface with a large angle of elevation (more than 45) and forms a screw pair with the carriage 16. The angle of elevation of the helix of the specified pair is greater than the angle of friction in this pair. The filler with a screw surface is fixed in the drums 4, placed in the supports 3. The rotary shaft 5 is fixed in the drums 4 and is aligned with the screw guide 17 and is rigidly connected with it. The spring clip 19 fixes the supports 3 in the bearing housing I and protects the drums 4 from falling out of nests in these supports.

Each ia of drums 4 has a flange with two holes 20 for fastening flexible ladders 22, on the steps of which lamellas 2 and load rail 7 are laid. The upper ends of these ladders are inserted into the inner

- - the cavity of the supports 3 through the windows in their bottom and passed through the holes 20 in the flanges of the drum 4 from the opposite sides of the axis of rotation of the drum. Fastening the ends of the ladders 22 iipoM3BOflHTCH by clamping them to the surface of the drum 4 with a screw with a washer 21. The drive of the lamella rotation mechanism is made in the form of two flexible 24.25 rotation rods inserted into the bearing housing I through an opening in the bracket 26 located on the edge of the housing. The rods are fastened with knots to the holes made on opposite sides of the carriage 16. In this case, the yovorot rod fixed to the edge of the carriage 16, opposite the axis of the bracket, is passed through a roller 27 mounted on axis II in the support of the rotation mechanism that is farthest from the bracket. Handles 28 are fixed on the outgoing ends of the bracket 26 to the outside of the flexible rods. The brackets 12 and 26 are fixed to the housing I using spring brackets 29. The proposed light-shielding device operates as follows. To raise the lamellas 2, it is necessary to exert a force on the handle 15 directed downward and at an angle of 20-30 from the vertical. In this case, the lifting rods 8.9, passed through the holes at the ends of the clamping elements 13, rotate them about the axis 14. This will ensure the free movement of the rods (see, Fig. 3). When the effort is applied in the same direction, the 8.9 lift rods begin to lift the load carrier 7, fixed at the opposite ends of the rods. In this case, the lamellas 2 are successively stacked on this rail and continue to move up with it. To fix the slats at a certain height, it is necessary, without removing the force exerted on the handle 15, to translate the 8.9 lift rods to the vertical position. In this case, the lifting rods 8.9, passed through the holes in the clamping elements 13, rotate them around the axis 14 and they CB01MI surfaces 23 clamp these rods Sem. figure 2). After that, you can remove the force from the handle 15. - / o / 8.9 lifting rods, passed through the holes on the clamping pins

elements 13, they will be rotated around axis 14 and under the influence of their own feet about the weight of the lamella 2 with a rail 7 will come into motion. The fixed lamellas at a certain height are also carried out by transferring the rods 8.9 to the vertical position using the handle 15.

In order to frequently or completely rotate the lamellas 2 to block the luminous flux, it is necessary to actuate the rotation mechanism.

To do this, one of the handles 28 should be pulled down (see Fig. 1,4,51). The applied force through the bottom from the 24.25 turn rods connected with the handle 28 will begin to persecute the carriage 16 along the guides. 17,18. The force from the carriage 16 is transmitted through a screw pair to the screw surface ..; ь the guide 17 and starts to rotate around its axis. In this case, the shaft 5 and the drums 4 associated with this screw lead begin to rotate. The ends of the ladder 22 mounted on the drums 4 , when they turn, they begin to move in opposite directions 5 x. At the same time, the corresponding conkacion of the steps of the steps of the ladders 22 is started, turning around the horizontal wasp lamellas 2 mounted on these ladders.

With a horizontal arrangement of lamellas, the carriage 16 is equidistant from the supports. When moving the carvit 16 to one of the supports 3, the lamellas 2 rotate in about, the bottom from the sides at an angle of about 90 °, and when the carriage 16 reaches its extreme position, the lamellas 2 are installed vertically and the device closes with a complete overlap of the light flux. In this case, the rotary shaft 5 with the drums 4 is rotated by a value of about 120 in about one day from the sides.

When removing the force applied to one of the hooks, the carriage 16 is installed in the intermediate position and the lamellas 2 are fixed in the intermediate position.

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Reliable fixing of the angle of rotation of the lamellas 2 in any positions is ensured by the self-braking of the screw pair during the transfer of force from the screw to the carriage.

Working drawings for the proposed light-protective device have been developed at the T About O Milan in St. Petersburg, according to which a prototype has been made. Tests of the prototype passed with a positive result. At present, at the TOO of Milan Be, preparatory work is underway to launch the pre-tg: stepped device into mass production.

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Deputy General Director of Milan LLP. Authors: with L. CtA yu /. T. Savushkin E.A. Bobrovsky A.D. Kagan A.V. Pikarev O.D.Savinsky

Claims (1)

A light-protective device of a lifting-rotary type with a horizontal arrangement of lamellas, comprising a housing, a mechanism for lifting the lamellas with lifting rods and clamping elements, and a rotation mechanism for the lamellas with turning rods and a rotary shaft with drums mounted on it, laid in supports, characterized in that, for the purpose of simplifying the design while improving operational characteristics, the clamping elements of the lifting mechanism are made in the form of levers with holes at the ends through which the lifting rods are passed and having an eccentric a working surface located between these holes and the swing axis, and the lamella rotation mechanism comprises a carriage with rotation rods fixed to it, moving along two guides, one of which has a helical surface, and a roller that bends around one of the rods, and the carriage is located between roller and holes in the housing for the passage of rods, and the magnitude of the angle of elevation of the helical surface of the guide, comprising a screw pair with the carriage, is selected with a multiple excess of the friction angle in this pair.