RU2746015C1 - Device with flexible gear rack for remote control of glazing windows - Google Patents

Abstract

FIELD: window structures.SUBSTANCE: working body is flexible gear rack 10 made of a polymer material, one end of the rack has elements 12 of fastening to the bracket, and the other non-working end has stroke limiter 14. The elongated case is formed by the front panel, the sidewalls, the end faces and the bottom part. Geared motor 30 of the electromechanical drive with drive gear 31 is fastened to the sidewalls of the case; in the front panel, on the side of one end face, exit hole 25 is made for the retractable end of the rack. The gear train includes gear 50 connected to drive gear of geared motor 30, and smooth roller 60 for pressing gear rack 10 to gear 50.EFFECT: simplification of the design while ensuring compactness, wear resistance and durability.10 cl, 8 dwg

Description

The invention relates to mechanical engineering, namely to electromechanical devices for remote opening and closing of glazing windows and can be used in automation systems in industry and everyday life.

Automatic window control is important, as a rule, for the purpose of ventilation to ensure a comfortable microclimate in the room if the windows are difficult to access (for example, they are very high), as well as for natural air pressurization for smoke ventilation systems, or smoke removal.

In building window automation systems, chain drives are mainly used, which, due to their design features, are compact and attractive in terms of design. The principle of operation of the chain drive is based on the transmission of tractive effort from the electric motor through a gear reducer, which allows you to change the torque and speed of rotation, to the main bearing element - a chain on which the open sash is held. When the window is opened, the chain pushes the sash away from the drive, and when the window is closed, the chain folds compactly. A sufficient range of such devices is produced by a number of manufacturers, for example, by D + H Mechatronic AG.

Also known are rack drives, otherwise called rack and pinion drives, which are used to open roof elements of translucent structures - skylights, inclined windows, roof hatches. The rack and pinion drive is a rotary-translational device. The electric motor, through a gear reducer, transmits the traction force to the main bearing element - the longitudinal rail, on which the open sash is held. The main bearing element of such drives - the longitudinal rail is a more rigid and stable element in comparison with the chain - it withstands well the vertical loads from the dead weight of the structures being lifted. Due to the high bearing capacity of the working elements, the rack drives are designed to open heavy panoramic windows, which are close in overall dimensions to the most technologically possible.

Patent publications deal mainly with the optimization of structural elements of these devices.

A drive is described in which a toothed rack contains a metal base, in particular made of steel or aluminum, with a plastic toothed bar mounted on it, in particular made of polyamide PA12G (RU 2640665 C2, KNORR-BREMZE GESELLSHAFT MIT BESCHRENKTER HAFTUNG (AT), 11.01.2018 ). The use of PA12G polyamide and / or aluminum can also improve the vibration response of the gear racks, since both materials are lightweight and have good damping properties, so that the vibrations are only slightly excited or quickly damped again. The disadvantages are that the toothed rack has a rigid base and does not imply the use of force transmission at an angle relative to the direction of movement of the rack.

Known drive designs using flexible gear racks to adjust the glazing (CN 104763272 (A), CHEN XUEQIN, 07/08/2015). The device has a housing, inside of which a drive gear is placed, a flexible toothed rack / belt, pressed against the gear by a spring-loaded roller. The flexible toothed rack is housed in a rectangular slide rail rigidly connected to the housing. The rack is in engagement with the toothed belt drive gear, which is located on the base of the lift, at the lower end of the lift arm; and a pinch roller for compacting, extruding and pushing the toothed belt is disposed at the rear of the toothed belt in an engaging position. However, the flexibility of the toothed belt when organizing the movement of the glasses is not used, because its movement is provided by sliding along the guides.

The closest to the patented device is a chain-type electric window opener described in the patent (CN 202164921 (U), JINLONG SHAN, 03/14/2012 - prototype). The drive is fixed to the frame, and the chain is connected through the mounting brackets to the window sash. The gear is located between the motor in the housing and the chain guide plate, and the motor engages with the plastic gear through a worm. The device can realize remote automatic control and automation, wireless remote control, making it more flexible and convenient to use.

The main disadvantages include a chain working body that is difficult to manufacture and assemble, the use of a worm gear, which has a lower efficiency compared to a gear, wear and a tendency to jam, as well as a large body size, which is determined by the length of the refueled part of the chain and the dimensions of the electric motor.

The present invention is aimed at solving the problem of improving the operational characteristics of a device for remote opening and closing of glazing windows, mainly swing and flap sashes up to 140 cm in height and up to 85 cm in width for typical plastic windows of residential premises.

The device for remote control of glazing windows includes an electromechanical drive with a gear drive, located in an elongated housing attached to a fixed element of the window frame, the extendable operating member of the drive has a bracket for attachment to the window sash, remote control and power supply elements.

The difference is as follows. The working body is a flexible toothed rack made of polymer material, one end of the rack has fastening elements to the bracket, and the other non-working end has a travel stop.

The elongated body is formed by a front panel, side walls, end faces and a bottom part, while an electromechanical drive gear motor with a driving gear is attached to the side walls of the body; in the front panel on the side of one end face there is an outlet for the extending end of the rail, and on the side of the other end face there are control and power supply elements.

The gear train includes a gear associated with the drive gear of the said gear motor and a smooth roller for pressing the gear rack to the gear, the said roller is located in the housing from the side of the said outlet, and the housing of the gear motor is separated from the bottom of the elongated housing by a partition to form a channel to move the non-working end of the rack.

The device can be characterized by the fact that the toothed rack has a length of 200 mm, a width of 25 mm, a total thickness of 2 mm with a tooth height of 1 mm, while the period and size of the rack teeth coincides with the parameters of the gear.

The device can also be characterized by the fact that the parameters of the longitudinal stiffness of the toothed rack are selected from the condition that the end of the cantilever rack is deflected by an angle of no more than 20 ° while providing a pushing force of at least 5N.

The device can also be characterized by the fact that the flexible gear rack and gears are made of a composite polymer material of the TOTAL GF-30B brand, and in addition, the flexible gear rack is made of thermopolyurethane and has a ribbon core made of spring steel. The travel stop of the toothed rack can be formed by a section having a thickening along the length of two or three end teeth.

The device can also be characterized by the fact that the gear is formed by at least two gear wheels separated from each other by means of a bushing, mounted on a common shaft and made of metal, and in addition, by the fact that the fixed element of the window frame is an impost, the toothed rack is connected with a bracket using a quick-release spline connection.

The device can also be characterized in that the remote control means include a control unit for a geared motor, a radio module and / or an infrared receiver module, a connector for wired control connected to the buttons of the electrical contacts displayed on the front panel of the case.

The technical result is to simplify the design while ensuring compactness, wear resistance and durability due to the implementation of the working body in the form of a flexible toothed rack that combines the properties of a belt and a rigid rack. This allows the flexible rail not to bend in the plane of the working stroke and to transmit the pushing force to open the window, which is a property of the rigid rail. On the other hand, to bend to tightly bend around the gear wheel, at the same time exerting a permissible lateral pressure on the axis of the latter for use in a rack and pinion drive. In addition, the flexible strip has low permanent (plastic) deformation, allowing it to restore its original shape. These properties of the lath are determined by the properties of the recommended composite materials, as well as its dimensions. In particular, TOTAL GF-30 polymer can serve as the material for the rail. The required characteristics can be achieved by using a combined rail, for example made of TPU and spring steel.

The essence of the invention is illustrated in the drawings, where:

fig. 1- drive design, view from the side wall;

fig. 2 is a sectional view along A-A from the side of the front panel;

fig. 3, 4 - the structure of the flexible rail;

fig. 5 - placement of the drive on the window;

fig. 6 - construction of the bracket for fastening to the window sash;

fig. 7 - a variant of the placement of drives;

fig. 8 is a block diagram of a control unit.

FIG. 1-4 show the design of a patented device for remote control of glazing windows.

The working body of the electromechanical drive with a gear transmission is a flexible toothed rack 10 made of polymer material, one end of the rack has elements 12 for fastening to the bracket, and the other non-working end has a travel stop 14. The strip 10 of polymeric material may have a strip core 11 of spring steel.

The elongated body 20 is formed by a front panel 21, side walls 22, 23, end faces 24, 25 and a bottom part 26. The bottom part 26 is attached to the fixed part 70 of the window in a known way, for example, by means of screws 71 (shown schematically). Latches 29 can be used to attach the case to the bottom.

A gear motor 30 of an electromechanical drive with a driving gear 31 in a housing 32 is attached by means of pins 33 to the side walls 22, 23 of a housing 20. It is convenient to use a two-way gear motor with a gear ratio of 1:90 and a shaft speed of 110 rpm.

In the front panel 21 on the side of the end face 24 there is an outlet 25 for the extending end of the rail 10. On the side of the other end face 25, the elements 40 for remote control and power supply are arranged.

The gear train includes a gear 50 connected to the drive gear 31 of the gear motor 30 and a smooth roller 60 for pressing the gear rack 10 to the gear 50. The roller 60 is located in the housing 20 from the side of the outlet 25 and is mounted on an axis 61 fixed in the side walls 22 , 23 housing 20. The gear can have 64 teeth.

The housing 32 of the gear motor 30 is separated from the bottom 26 of the housing 20 by a partition 27 with the formation of a channel 28 for moving the non-working end of the gear rack 10.

The toothed rack 10 (Fig. 3, 4) can have, for example, a length of 200 mm, a width of w = 25 mm, a total thickness of t = 2 mm with a height of the teeth z = 1 mm. The period and size of the teeth 16 of the rack 10, respectively, coincides with the parameters of the gear 50. The parameters of the longitudinal stiffness of the toothed rack 10 are selected from the condition that the free end of the cantilevered rack is deflected at an angle of no more than 20 °. To provide additional rigidity, a strip core 11 of spring steel with a width of s = 10 mm and a thickness of h = 0.8 mm can be located inside the rail 10. This stiffness of the rail 10 is sufficient to push out the window sash with a force of up to 5N and its retraction with a force of up to 30N, which ensures the opening and closing of the window sash of a plastic window with a two-chamber glass unit up to 140 cm high and 85 cm wide in the swing and tilt planes (without wind load ).

The gear 50 is formed by at least two gear wheels 52, 53, separated from each other by a sleeve 51, mounted on a common shaft 54 and made of metal, for example, grade 50XFA.

The travel stop 14 of the gear rack 10 is a bulge 15 formed in place of two or three end teeth 16.

The toothed rack 10 and the gears 52.53 of the gear 50 can be made of a composite polymer material of the TOTAL GF-30 brand (http://filamentamo.ru/id=80) or thermopolyurethane, providing low noise during operation. In the case of TPU, a spring steel strip core is used.

The fixed part 70 of the window frame 80 is an impost 81 (Fig. 5, 6). The body of the device is attached to it.

The toothed rack 10 is connected by a bracket 83 to the sash 82 of the window 80 by means of a known quick-release spline connection, preferably with a Tr 5 × 2 threaded fixing screw 8 mm long with a handle 84 with a diameter of 15 mm.

FIG. 7 shows a variant of placing the device on a typical plastic window. Two devices will provide remote opening / closing of two leaves. The power supply wires 85 are attached to a fixed portion 70 of the window frame 80.

The remote control elements 40 (Fig. 8) include a control unit 41 for the geared motor 30 connected to the radio communication module 42 and / or the infrared receiver module 43, a connector for wired control connected to the buttons 44 of electrical contacts brought out to the front panel 21 of the housing 20. FIG. 2 the location of these elements (pos. 41-44) is shown conditionally.

The power supply module 45 can be made in various versions known from the prior art: in the form of a battery module built into the housing 20 with a replaceable or rechargeable battery; connect to a household AC power supply (110 ... 220 V) or to an external low-voltage (from 3.0 to 50 V) AC or DC power adapter.

The device operates as follows.

In the window opening mode, electric power is supplied to the geared motor 30 with direct polarity. This drives the gear 50, which pushes the rack 10 out of the housing 20, pushing the part of the window sash 82 rigidly connected to the rack 20 by means of the bracket 83 and fastening elements 12 from the fixed window frame 80. The movable part of the window sash rotates or tilts, depending on the configuration sash.

The opening stop occurs when the electric power is removed from the geared motor 30 or when the limiter 14 is triggered. The length of the rack 10 extension, and, accordingly, the degree of opening of the sash is regulated by means of the control unit 43. In the case of fixing the limiter 14 between the gear 50 and the roller 60, which prevents rotation, there is a stable increase in the current consumed by the geared motor in comparison with the forward travel of the rack, which is determined by the control unit 43, and initiates a stop.

In the window closing mode, electric power is supplied to the geared motor 30 with reverse polarity. This drives the gear 50, which pulls the rack 10 into the housing 20, pulling the part of the window sash 82 rigidly connected to the rack 10 by means of the bracket 83 and fastening elements 12 to the fixed frame of the window 80.

The closing stop occurs when the power supply is removed from the gear motor 30 or when a part of the window sash 82 abuts against the fixed window frame 80. The length of the retraction of the toothed rack, and, accordingly, the degree of closing of the sash is adjusted using the control unit 43. current consumed by the geared motor 30 in comparison with the rack retraction mode, which is determined by the control unit 43, and initiates a stop.

In the open and closed static states, the sash is held by the holding torque of the geared motor 30.

Thus, due to the use of a flexible toothed rack in the claimed device for remote control of glazing windows, a technical result is achieved - simplifying the design while ensuring compactness, wear resistance and durability.

Claims (16)

1. Device for remote control of glazing windows, including an electromechanical drive with a gear drive, located in a housing attached to a fixed element of the window frame, the extendable operating member of the drive has a bracket for attaching to the window sash, remote control and power supply elements, characterized in that the working body is a flexible toothed rack made of polymer material, one end of the rack has fastening elements to the bracket, and the other non-working end has a travel stop; the body is formed by a front panel, side walls, end faces and a bottom part, while a motor reducer of an electromechanical drive with a driving gear is attached to the side walls of the body; in the front panel on the side of one end face there is an outlet for the extendable end of the rail, and on the side of the other end face there are control and power supply elements; the gear transmission includes a gear associated with the driving gear of the said gear motor, and a roller for pressing the gear rack against the gear, wherein said roller is located in the housing from the side of said outlet opening, and the housing of the gear motor is separated from the bottom of the housing by a partition to form a channel for displacement of the inoperative end of the rack. 2. The device according to claim. 1, characterized in that the toothed rack has a length of 200 mm, a width of 25 mm, a total thickness of 2 mm with a tooth height of 1 mm, while the period and size of the rack teeth coincides with the parameters of the gear. 3. A device according to claim 2, characterized in that the parameters of the longitudinal stiffness of the toothed rack are selected from the condition that the end of the cantilevered rack is deflected at an angle of no more than 20 ° while providing a pushing force of at least 5N. 4. The device according to claim 1, characterized in that the flexible toothed rack and gears are made of a composite polymer material of the TOTAL GF-30 brand. 5. The device according to claim. 1, characterized in that the flexible toothed rack is made of thermopolyurethane and has a ribbon core made of spring steel. 6. The device according to claim. 1, characterized in that the travel stop of the toothed rack is formed by a section having a thickening along the length of two or three end teeth. 7. The device according to claim. 1, characterized in that the gear is formed by at least two separated from each other by means of a sleeve gear wheels mounted on a common shaft and made of metal. 8. The device according to claim 1, characterized in that the fixed element of the window frame is an impost. 9. The device according to claim 1, characterized in that the toothed rack is connected to the bracket using a quick-release spline connection. 10. The device according to claim. 1, characterized in that the remote control means include a control unit for the geared motor, a radio module and / or an infrared receiver module, a connector for wired control connected to the buttons of electrical contacts displayed on the front panel of the case.

Images