KR20090056308A - Auto opening and closing device of window and window system having the same - Google Patents

Auto opening and closing device of window and window system having the same Download PDF

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Publication number
KR20090056308A
KR20090056308A KR1020070123399A KR20070123399A KR20090056308A KR 20090056308 A KR20090056308 A KR 20090056308A KR 1020070123399 A KR1020070123399 A KR 1020070123399A KR 20070123399 A KR20070123399 A KR 20070123399A KR 20090056308 A KR20090056308 A KR 20090056308A
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KR
South Korea
Prior art keywords
window
closing device
opening
motor
window frame
Prior art date
Application number
KR1020070123399A
Other languages
Korean (ko)
Inventor
신승회
Original Assignee
신승회
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 신승회 filed Critical 신승회
Priority to KR1020070123399A priority Critical patent/KR20090056308A/en
Publication of KR20090056308A publication Critical patent/KR20090056308A/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/06—Suspension arrangements for wings for wings sliding horizontally more or less in their own plane
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/002—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E05F15/635—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/71—Power-operated mechanisms for wings with automatic actuation responsive to temperature changes, rain, wind or noise
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/71—Toothed gearing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

Disclosed is an automatic window opening / closing device which automatically opens and closes a window according to indoor temperature, indoor air pollution, weather change, or time. Automatic window opening and closing device according to the present invention is installed on one side of the sliding door that slides in the window frame, the body having a wheel to move along the window frame; A forward and reverse rotatable motor for rotating the wheel; Sensor unit for detecting the temperature, humidity and / or pollution of the room; A timer for setting a window opening time; And a control unit controlling the driving of the motor according to the detection signal of the sensor unit and / or the time of the timer. The wheel is composed of a pinion member having a plurality of protrusions formed on an outer circumferential surface thereof, and a rack member is installed in the window frame section in which the pinion member is moved.

Description

AUTO OPENING AND CLOSING DEVICE OF WINDOW AND WINDOW SYSTEM HAVING THE SAME}

The present invention relates to a window system for entering or exiting a building, ventilation, viewing, skylight, and the like, and more specifically, a window is provided according to room temperature, humidity, pollution degree, and / or setting period. The present invention relates to an automatic opening and closing window automatically opening and closing device and a window system having the same.

In general, the building is equipped with doors for entrance, windows for ventilation, view and skylight. Such a door may be installed as a sliding structure or a sliding structure, in the case of a window is a sliding door is employed a lot.

Such windows may be opened or closed due to indoor ventilation, temperature control, rain or snow, pollution of outdoor air such as yellow dust, and the like. However, in the above situation, since the opening or closing of the window is entirely made by a person (for example, a resident), there is a problem in that damage may occur if not properly handled.

In other words, due to the trend of encapsulation of buildings due to noise and energy saving, indoor air has become more serious due to the accumulation of indoor air pollution and harmful gases and environmental hormones generated from various building materials. It is good to open the windows periodically for a certain period of time, but it is not easy for the occupants to open and close the windows periodically by judging the degree of air pollution.

In addition, if the rain or snow when the window is open, the window should be closed immediately, but the snow or rain does not flow into the room, it is difficult to determine whether the rain or snow, or it is difficult to properly respond accordingly in the outside.

In addition, if the temperature difference between day and night is large, sleeping with the window open during the day, the temperature drops during the night, the indoor temperature is lowered, there is a fear that the residents suffer from a cold, such as a cold. Therefore, there is inconvenience such as having to wake up and close the window.

The present invention has been made in view of the above, an object of the present invention is to provide a window automatic opening and closing device that automatically opens and closes the window according to the temperature and / or time of the room.

Another object of the present invention is to provide a window automatic opening and closing device that automatically opens and closes a window according to a change in indoor pollution and / or external weather.

Still another object of the present invention is to provide an automatic window opening and closing device which can be installed and used in a desired window by anyone having a simple structure and convenient operation and portability.

Still another object of the present invention is to provide a window system having the automatic window opening and closing device as described above.

Automatic window opening and closing device according to an embodiment of the present invention for achieving the above object is installed on one side of the sliding door that slides in the window frame, the body having a wheel to move along the window frame; A forward and reverse rotatable motor for rotating the wheel; Sensor unit for detecting the temperature, humidity and / or pollution of the room; And a control unit controlling the driving of the motor according to the detection signal of the sensor unit.

In addition, the present invention may further include a timer for setting the window opening and closing time, wherein the control unit may be configured to control the driving of the motor in accordance with the time set in the timer.

In addition, the wheel may be composed of a pinion member having a plurality of protrusions formed on an outer circumferential surface thereof, and a rack member may be installed in the window frame section in which the pinion member is moved.

In addition, the present invention may display a temperature, humidity and / or pollution degree by the sensor unit and a display unit for displaying the time setting by the timer may be installed in the main body.

The main body may include a power on / off switch, a current temperature display button, a time setting button, and a battery which is the motor driving source. Alternatively, the body may be provided with a power cord.

In addition, the rack member is provided with a support groove along its longitudinal direction, the main body is provided with a support member fitted to the support groove, it can be configured so that the main body is not lifted from the window frame when opening and closing the window.

In addition, the motor is built in the main body, the motor and the wheel may be connected by a gear train can be a driving force transmission. Alternatively, the motor may be installed on the shaft of the wheel.

The sensor unit may include a temperature sensor, a humidity sensor, and a pollution degree sensor. The control unit may determine the external weather change from the humidity of the indoor air by the humidity sensor.

The main body may be provided with a second hook ring to be hooked to the first hook ring provided in the sliding door, it can be installed and used anywhere the window automatic opening and closing device of the present invention with this structure.

On the other hand, the window system for achieving the object of the present invention, the window frame provided with a rail; At least two sliding doors installed on the window frame to be slidably movable; And a window automatic opening and closing device detachably installed on at least one or all of the sliding doors to automatically open and close the sliding door according to a room temperature, humidity and / or pollution degree, or time. Include.

According to the automatic window opening and closing device of the present invention and the window system having the same, the window is automatically opened and closed according to the temperature or humidity of the room, the degree of pollution or the time set by the occupant, so that the occupant changes the temperature of the room or changes in the weather outside. There is no inconvenience to open and close the window directly in case of indoor / outdoor pollution.

In addition, when the window opening and closing time is set using a timer, the window is automatically opened and closed, and ventilation is performed, thereby preventing deterioration of the health of the occupants due to pollution of indoor air.

In addition, if the temperature difference between night and day is large, even if the window is opened during the day, the window closes automatically when the temperature falls during the night, thus protecting the occupants from diseases such as cold, which may be caused by the decrease in the indoor temperature. can do.

Hereinafter, with reference to the accompanying drawings, a window automatic opening and closing device and a window system having the same according to an embodiment of the present invention as described above will be described in detail. For reference, in describing the present invention, if it is determined that the detailed description of known or concise descriptions may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

1 is a front view showing a window system having an automatic window opening and closing device according to an embodiment of the present invention, Figure 2 is a plan view of FIG. In FIG. 1 and FIG. 2, reference numeral 10 denotes a window frame, and 20 and 20 'are sliding doors installed on the window frame 10 so as to be slidable. The sliding doors 20 and 20 'are alternately arranged to overlap each other when they are opened, and the window frame 10 is provided with a rail for guiding a slide movement of the sliding doors 20 and 20', but in the drawing The illustration is omitted.

The automatic window opening and closing device 30 is installed on at least one sliding door 20 of the sliding doors 20 and 20 ', but may be installed on both sliding doors 20 and 20', respectively. As shown in FIG. 3, the window automatic opening and closing device 30 has a 'b' shaped second locking ring 41 that is caught by the 'b' shaped first locking ring 21 provided in the sliding door 20. It includes a main body 40 having a rack member 50 installed in whole or in part on the rail portion of the window frame 10.

3 and 4, the body 40 is provided with wheels 42 at the bottom and back. The wheel 42 is composed of a pinion member engaged with the rack member 50 (hereinafter, the pinion member will be described with reference numeral 42). In addition, the wheel 42 is formed of a rubber or plastic material having a large friction force.

The rack member 50 is a plurality of protrusions 53 are arranged in a band-shaped member with a predetermined interval, the pinion member 42 is in the groove between the protrusions 53 of the rack member 50 It is provided with a plurality of projections 43 to be fitted. Therefore, when the pinion member 42 rotates, the main body 40 can move along the longitudinal direction of the rack member 50, and since the main body 40 is installed in the sliding door 20, As the main body 40 moves, the sliding door 20 may be opened or closed.

In addition, the main body 40 is provided with a motor 60 for driving the wheels 42 forward and reverse rotation. The motor 60 is connected to the wheel 42 by the gear train 61 as shown, so that the rotational force of the motor 60 is transmitted to the wheel 42. Alternatively, the motor 60 may be installed on the shaft of the wheel 42 so that the power of the motor 60 is directly transmitted to the wheel 42 without using a power transmission means such as a gear train. .

In addition, the automatic window opening and closing device 30 according to an embodiment of the present invention, as shown in Figures 5 and 6, the temperature sensor 71 for detecting the temperature, humidity and pollution of the room, humidity sensor And a sensor unit 70 having a pollution degree sensor 73 and the like.

In addition, the automatic window opening and closing device 30 according to an embodiment of the present invention includes a control unit 80 for controlling the driving of the motor 60 according to the detection signal of the sensor unit 70. The control unit 80 compares the temperature, humidity and / or pollution degree detection value input from the sensor unit 70 with the reference value set by the user, and as a result of the comparison, the temperature, humidity and / or pollution degree detection value is the reference value. If it is determined to be different from, the sliding door (20, 20 ') is opened or closed by driving the motor 60.

Therefore, when the room temperature is high and the room temperature decreases while the room temperature is low while the window is opened, the current down temperature is inputted to the control unit 80 by the temperature sensor 71, so that the motor 60 is driven so that the sliding door 20 is automatically closed.

In the same principle, when the snow or rain in a clear weather, the humidity of the room is sensed by the humidity sensor 72, the detection value is input to the control unit 80 to drive the motor 60 to slide The door 20 is automatically closed so that snow or rain does not flow into the room.

In addition, the automatic window opening and closing device 30 according to an embodiment of the present invention is provided with a timer 90 that allows the user to set the window opening and closing time. At this time, the control unit 80 controls the driving of the motor 60 in accordance with the time by the timer 90 to automatically open or close the sliding door 20 at a set time. That is, when the window opening and closing time is set using the timer 90, the control unit 80 controls the driving of the motor 60 at the set time so that the indoor air can be periodically ventilated even if there is no person in the room. have. Therefore, the indoor air condition does not become cloudy or harmful to the human body.

In addition, the automatic window opening and closing device 30 according to an embodiment of the present invention displays the current temperature, humidity, and pollution degree of the room on the main body 40, and also displays the time and the set time (100) ) Is installed. In addition, the body 40 is provided with a temperature display button 110 to display the temperature, humidity and pollution degree on the display unit 100 and the operation buttons 120, 130, 140 for setting the time. The current time is normally displayed on the display unit 100. When the temperature display button 110 is pressed once, the present temperature, humidity and / or pollution degree are displayed. When the temperature display state passes for a predetermined time or when the temperature display button 110 is pressed again, the display unit 100 displays the current time again.

When the resident (user) wants to set the window opening and closing time, the time is set using the operation buttons 120, 130, and 140. The buttons 120, 130, and 140 may be composed of a button that changes to hour / minute, a time up button and a time down button, and a save button for storing a set time. The storage is based on overwriting.

In addition, the main body 40 may have a built-in battery 150 for supplying power to each unit and driving the motor 60, and an on / off switch 160 for turning on / off the power of the entire apparatus may be installed. Can be. Alternatively, the main body 40 may be configured to be provided with a separate power cord in addition to the battery to receive power from the outside.

The main body 40 is not necessarily limited, but is made of 5-10cm in width, 2-4cm in height, 2-4cm in height, 'b' shaped body for installing the body 40 to the sliding door 20 The size of the two hooks 41 is also formed so that the overall size does not exceed 2-3cm. Since the main body 40 is made compact as described above, it is easy to carry and easy to operate, so anyone can conveniently install it in a desired window.

On the other hand, the rack member 50 has a width corresponding to the width of the wheel 42, the length has a length corresponding to the opening and closing section of the sliding door 20. When automatically opening and closing the two sliding doors 20, 20 ', the rack member 50 is installed in the entire rail mounting portion of the window frame 10. The rack member 50 may be formed of rubber or plastic, and may be fixed to the window frame with a screw or the like so as to be detachable from the window frame.

When the main body 40 is moved by engaging the rack member 50 with the wheels 42, in particular, when the sliding door 20 is pushed or pulled, the main body 40 is lifted from the rack member 50. Can be. In order to prevent the lifting phenomenon during the movement of the main body 40, the support member 55 is formed long in the rack member 50 along its longitudinal direction, and the support groove 55 is formed in the main body 40. A supporting member 45 is inserted and supported.

When the automatic window opening and closing device 30 is installed on the window frame, the supporting member of the main body 40 is hooked with the second locking ring 41 provided on the main body 40 to the first locking ring 21 of the sliding door 20. Insert 45 into the support groove 55 of the rack member (50). In this structure, the main body 40 and the sliding door 20 are connected, and the main body 40 and the rack member 50 are not lifted, thereby allowing the door to be opened and closed smoothly. Here, the rack member 50 is installed on the lower side of the window frame, that is, the rail mounting portion by screws or other detachable fixing elements.

When the automatic window opening and closing device 30 is installed in the window frame as described above, the temperature, humidity and pollution degree of the room are sensed by the respective sensors 71, 72, and 73, and the detected value is controlled by the control unit 80. ) Is entered. Then, the control unit 80 compares the input detection value with a predetermined reference value, for example, when it is determined that the temperature of the room is higher than the reference value, and drives the motor 60 to open the sliding door 20. Let's do it. When the motor 60 is driven, the power of the motor 60 is transmitted to the wheels 42 through the gear train 61 or the like so that the wheels 42 rotate, and the wheels 42 are rack members 50. Since the main body 40 is moved in the longitudinal direction of the rack member 50, the sliding door 20 is opened because the main body 40 and the sliding door 20 are connected to each other. On the contrary, if it is determined that the indoor temperature is lower than the reference value, the control unit 80 drives the motor 60 to rotate in the direction in which the sliding door 20 is closed.

In the same principle, the control unit 80 determines the external weather change with the information of sensing the humidity of the indoor air to close the sliding door by driving the motor 60 so that snow or rain does not flow into the room. If snow or rain stops and the room temperature is normal, the motor 60 may be driven again to open the sliding door. The detection value by the pollution degree detection sensor 73 for detecting the pollution level in the room is input to the control unit 80, so that the sliding door can be opened or closed according to the driving control of the motor 60 by the control unit 80. Of course.

Next, the case in which the user sets the window opening and closing time is also the same as described above. In other words, assuming that the user sets a time for the periodic ventilation of the indoor air, the windows that are closed around 10 am every day for about 2 hours, and then set the time to close again, by the timer 90 at 10 am every morning The time is sensed and this time information is sent to the control unit 80 so that the control unit 80 drives the motor 60 at that time so that the sliding door 20 is automatically opened. When the set 2 hours have elapsed, the information is sent to the control unit 80 by the timer 90 so that the motor 60 drives in the reverse direction and the sliding door 20 is closed.

On the other hand, the automatic window opening and closing device 30 according to the present invention as described above may be convenient to open and close the window when installed in a window of a high-rise building difficult to open and close the window.

In the illustrated example, the automatic window opening and closing device 30 of the present invention is shown on one side of the sliding door 20, but the automatic window opening and closing device 30 of the present invention is predetermined inside the sliding door 20. It is also possible to form the installation groove of the, and to be embedded in this installation groove. In this case, the window automatic opening and closing device 30 may be invisible in appearance.

The present invention is not limited to the above-described specific preferred embodiments, and a simple configuration that can be carried out by a person of ordinary skill in the art without departing from the spirit of the present invention described in the claims below. Substitutions, additions, deletions, and alterations of elements fall within the scope of the claims.

1 is a front view showing a window system having an automatic window opening and closing apparatus according to an embodiment of the present invention,

2 is a plan view of FIG.

Figure 3 is an enlarged view showing an automatic window opening and closing device in the window system of Figure 1,

4 is a cross-sectional view of FIG.

5 is a side view of FIG. 4, and

Figure 6 is a block diagram of the automatic window opening and closing apparatus according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

10; window 20,20 '; sliding door

30; window automatic opening and closing device 40; body

21, 41; locking ring 42; wheel (pinion member)

50; rack member 60; motor

70; sensor unit 80; control unit

90; timer 100; display unit

110, 120, 130, 140; operation buttons

150; battery 160; on / off switch

Claims (10)

A main body installed at one side of the sliding door that slides in the window frame and having wheels moving along the window frame; A forward and reverse rotatable motor for rotating the wheel; Sensor unit for detecting the temperature, humidity and / or pollution of the room; And And a control unit for controlling the driving of the motor according to the detection signal of the sensor unit. The method of claim 1, It further includes a timer for setting the window opening and closing time, The control unit is a window automatic opening and closing device for controlling the driving of the motor in accordance with the time set in the timer. The method of claim 2, The wheel is composed of a pinion member formed with a plurality of protrusions on the outer circumferential surface, The window frame opening and closing device is installed in the window frame section that the pinion member is moving. The method of claim 2, And a display unit for displaying the temperature, humidity and / or pollution degree by the sensor unit, and displaying the time setting by the timer. The method of claim 4, wherein The main body is provided with a power on / off switch, a current temperature display button, a time setting button, the window automatic opening and closing device with a battery which is the motor driving source. The method of claim 3, wherein The rack member is provided with a support groove along its longitudinal direction, the main body is provided with a support member fitted to the support groove, the window automatic opening and closing device so that the main body is not lifted from the window frame when opening and closing the window. The method of claim 1, The motor is built in the main body, the motor and the wheel is automatic window opening and closing device connected by a gear train. The method of claim 1, The sensor unit, automatic window opening and closing device comprising a temperature sensor, humidity sensor and pollution detection sensor. The method of claim 1, The main window automatic opening and closing device is provided with a second hook ring to be caught on the first hook ring provided in the sliding door. A window frame having a rail; At least two sliding doors installed on the window frame to be slidably movable; And 10. The automatic opening and closing of the window according to any one of claims 1 to 9, which is installed on at least one or both of the sliding doors and automatically opens and closes the sliding door according to the temperature, humidity and / or pollution degree or time of the room. Window system comprising a.
KR1020070123399A 2007-11-30 2007-11-30 Auto opening and closing device of window and window system having the same KR20090056308A (en)

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KR1020070123399A KR20090056308A (en) 2007-11-30 2007-11-30 Auto opening and closing device of window and window system having the same

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Application Number Priority Date Filing Date Title
KR1020070123399A KR20090056308A (en) 2007-11-30 2007-11-30 Auto opening and closing device of window and window system having the same

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200469242Y1 (en) * 2013-08-13 2013-10-11 박민현 Automatic window opening and closing apparatus works according to external weather
KR101589158B1 (en) * 2014-09-29 2016-01-27 류만열 Opening and closing apparatus for double sliding window
WO2018110769A1 (en) * 2016-12-15 2018-06-21 카본 디자인 Opening and closing device of sliding-type window or door assembly
KR20180089240A (en) * 2017-01-31 2018-08-08 엘지전자 주식회사 Window attached type ventilation device
KR101968073B1 (en) * 2017-12-27 2019-04-11 이노디지털 주식회사 window control system of operating as a response to air quality of indoor and outdoor
KR20230092187A (en) * 2021-12-17 2023-06-26 주식회사 선포탈 Light Collecting System Of Indoor Louver With Built-in Receiver

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200469242Y1 (en) * 2013-08-13 2013-10-11 박민현 Automatic window opening and closing apparatus works according to external weather
KR101589158B1 (en) * 2014-09-29 2016-01-27 류만열 Opening and closing apparatus for double sliding window
WO2018110769A1 (en) * 2016-12-15 2018-06-21 카본 디자인 Opening and closing device of sliding-type window or door assembly
KR20180089240A (en) * 2017-01-31 2018-08-08 엘지전자 주식회사 Window attached type ventilation device
KR101968073B1 (en) * 2017-12-27 2019-04-11 이노디지털 주식회사 window control system of operating as a response to air quality of indoor and outdoor
KR20230092187A (en) * 2021-12-17 2023-06-26 주식회사 선포탈 Light Collecting System Of Indoor Louver With Built-in Receiver

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