Hidden electric casement window

Abstract

The utility model provides a hidden electric casement window which is applied to the technical field of doors and windows. The conversion frame is arranged between the window frame and the window sash, so that the window sash is hinged in the conversion frame, and two mounting areas are formed between the window frame and the window sash. The first installation area is located between the indoor frame body profile and the outer frame inner profile and used for installing the screen sash, and the problem that no redundant space exists for installing the screen sash in the prior art is solved. The second installation area is located between the indoor frame profile and the window sash inner profile and used for installing the motor, the motor is hidden between the window frame and the window sash, the problem that the motor is exposed is avoided, the attractiveness of the window is improved, the motor is protected against erosion of external factors, and the service life of the motor is prolonged. In addition, due to the embedded installation structure of the motor, the installation and maintenance processes are simplified, and the reliability and maintenance convenience of the window are improved.

Description

Technical Field

[0001] The present application relates to the technical field of doors and windows, and more specifically, to a hidden electric casement window. Background Art

[0002] Sliding windows are suitable for curtain wall products or public places. The hardware control methods can be divided into manual sliding windows and electric sliding windows. However, most of the electric sliding windows on the market currently use external motors (such as the attached Figure 2 As shown), the motor of this type of electric sliding window leaks out, which not only affects the overall aesthetics of the window, but is also easily corroded and damaged by external factors, reducing the service life of the motor and the reliability of the window. In order to achieve a simple and beautiful appearance of the window, the design of hidden electric motors has become the key to the development of electric sliding windows. For example, in the Chinese utility model patent with announcement number CN220955255U - a hidden motor electric sliding window, a solution is proposed to set the motor between the window frame and the window sash. However, in this solution, the motor is directly set in the window frame and fixed to the window sash by screws. In actual use, maintenance of the motor requires disassembling the window frame and loosening the screws fixed to the window sash, which is very inconvenient. In addition, the motor occupies a large width in the window frame, and there is no extra space to install the screen sash. Therefore, there are problems in the prior art such as insufficient installation space for the window frame profile structure, complicated motor installation process and inconvenient maintenance.

[0003] In view of the above problems, the existing technology is in urgent need of improvement. Utility Model Content

[0004] The purpose of the present application is to provide a hidden electric casement window, which forms two installation areas between the window frame and the window sash by setting a conversion frame between the window frame and the window sash so that the window sash is hinged in the conversion frame. The first installation area is located between the indoor frame profile and the inner profile of the outer frame, and is used to install the screen fan, which solves the problem of no extra space for installing the screen fan in the prior art. The second installation area is located between the indoor frame profile and the inner profile of the window sash, and is used to install the motor, so that the motor is hidden between the window frame and the window sash, avoiding the problem of the motor being exposed, thereby improving the aesthetics of the window, protecting the motor from erosion by external factors, and extending the service life of the motor. In addition, the embedded installation structure of the motor also simplifies the installation and maintenance process, improving the reliability and maintenance convenience of the window.

[0005] In a first aspect, a hidden electric casement window comprises a window frame and a window sash arranged in the window frame, a conversion frame is provided between the window frame and the window sash, the window sash is hinged to the conversion frame, the conversion frame comprises an indoor frame profile and an outdoor frame profile, the window frame comprises an outer frame outer profile and an outer frame inner profile, and the window sash comprises an outer sash profile and an inner sash profile.

[0006] A first installation area is formed between the indoor frame profile and the outer frame inner profile, and the first installation area is used to install a screen fan;

[0007] A second installation area is formed between the indoor frame profile and the window sash inner profile, and the second installation area is used for installing a motor.

[0008] The present application provides a concealed electric casement window. By providing a transfer frame between the window frame and the sash, the sash can be hinged to the transfer frame rather than directly to the window frame. This creates two mounting areas between the window frame and the sash. The first mounting area, located between the interior frame profile and the inner profile of the outer frame, is used to install the screen sash, resolving the problem of insufficient space for the screen sash in the prior art. The second mounting area, located between the interior frame profile and the inner profile of the sash, is used to install the motor. This allows the motor to be hidden between the transfer frame and the sash, preventing it from being exposed, thereby improving the window's aesthetics and protecting the motor from external factors, extending its service life. The second mounting area is specifically designed for installing the motor. This embedded installation reduces the complexity of motor installation. When removing the motor for maintenance, one only needs to open the window sash and remove the motor from the second mounting area, eliminating the need to disassemble the window frame and then tighten screws to remove the motor. This significantly reduces the inconvenience and hassle of motor maintenance. Therefore, the present application provides ample installation space and a simple motor mounting structure, making it easy to maintain.

[0009] Furthermore, the inner profile of the window sash and the motor are connected via a chain connection mechanism.

[0010] This application provides a concealed electric casement window. A chain connection mechanism, located on the inner profile of the window sash, connects to a motor. Through the chain connection mechanism, the motor can drive the window sash to open and close. This design effectively transmits power from the motor to the window sash, enabling the automatic opening and closing of the electric casement window. The provision of a chain connection mechanism simplifies the connection between the motor and the window sash, improving installation and maintenance convenience.

[0011] Furthermore, a mounting groove is provided on the indoor frame profile, and the mounting groove is used to install the motor.

[0012] This application provides a concealed electric casement window with a mounting slot in the interior frame profile. This technical feature allows the motor to be conveniently embedded in the mounting slot, thus eliminating the need for screw installation, which is a complex process. By providing a mounting slot in the interior frame profile, the motor can be concealed, which does not affect the aesthetics of the window and facilitates installation and maintenance.

[0013] Furthermore, the width of the mounting groove is 34 mm and the height is 17 mm.

[0014] This application provides a concealed electric casement window with a mounting slot width and height of 34mm and 17mm, respectively. These specific dimensions ensure that the motor can be stably mounted on the interior frame profile and can be easily removed and installed when maintenance is required. This design solves the problems of insufficient motor installation space and inconvenient maintenance, and improves the overall user experience and reliability of the concealed electric casement window.

[0015] Furthermore, a wind and rain sensor is provided at the bottom of the window frame close to the outdoor side.

[0016] Furthermore, a conversion frame insulation strip is provided between the indoor frame profile and the outdoor frame profile, and the width of the conversion frame insulation strip is 24 mm; a window sash insulation strip is provided between the window sash outer profile and the window sash inner profile, and the width of the window sash insulation strip is 24 mm.

[0017] Furthermore, the conversion frame insulation strips are spaced apart in the vertical direction to form a first insulation cavity, and the window sash insulation strips are spaced apart in the vertical direction to form a second insulation cavity. The first insulation cavity and the second insulation cavity form a vertical insulation cavity in the vertical direction for insulation.

[0018] Furthermore, a hinge is connected between the window sash and the conversion frame, and the hinge includes a first connecting arm and a second connecting arm, the first connecting arm extends into the second insulation cavity and is fixed to the inner profile of the window sash, and the second connecting arm extends into the indoor frame profile and is fixed to the indoor frame profile.

[0019] Furthermore, the length of the first connecting arm and the second connecting arm is 5 mm.

[0020] Furthermore, a window frame heat insulation strip is provided between the outer frame outer profile and the outer frame inner profile, and the width of the window frame heat insulation strip is 39 mm.

[0021] Beneficial Effects: The present invention proposes a concealed electric casement window. By providing a transfer frame between the window frame and the sash, the sash can be hinged to the transfer frame rather than directly to the window frame. This creates two mounting areas between the window frame and the sash. The first mounting area, located between the interior frame profile and the inner profile of the outer frame, is used to mount the screen sash, resolving the problem of insufficient space for mounting the screen sash in the prior art. The second mounting area, located between the interior frame profile and the inner profile of the sash, is used to mount the motor. This allows the motor to be hidden between the transfer frame and the sash, preventing it from being exposed, thereby improving the aesthetics of the window and protecting the motor from external factors, extending its service life. The second mounting area is specifically designed for mounting the motor. This embedded mounting reduces the complexity of motor installation. When removing the motor for maintenance, one need only open the window sash and remove the motor from the second mounting area, eliminating the need to disassemble the window frame and then screw it in. This significantly reduces the inconvenience and hassle of motor maintenance. Therefore, the present invention provides ample installation space and a simple motor mounting structure, making maintenance easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A cross-sectional view of a hidden electric casement window provided in this application.

[0023] Figure 2 The figure is a schematic diagram of the structure of an electric casement window in the prior art.

[0024] Figure 3 An exploded view of a hidden electric casement window provided in this application.

[0025] Figure 4 This is a structural schematic diagram of a hidden electric casement window provided in this application when it is opened.

[0026] In the figure: 11. Window frame; 12. Conversion frame; 13. Window sash; 14. Screen sash; 15. Motor; 16. Sealing strip; 17. Wind and rain sensor; 26. Hinge; 261. First connecting arm; 262. Second connecting arm; 121. Indoor frame profile; 122. Outdoor frame profile; 111. Outer frame outer profile; 112. Inner frame inner profile; 131. Outer sash outer profile; 132. Inner sash inner profile; 123. First installation area; 124. Second installation area; 125. Installation slot; 27. Chain connecting mechanism; 28. Conversion frame insulation strip; 29. Window sash insulation strip; 30. First insulation chamber; 31. Second insulation chamber; 32. Window frame insulation strip. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] The motor installation process of the existing electric casement window is complicated, and maintenance is inconvenient. In addition, the window frame profile structure has insufficient installation space, and a screen fan cannot be installed. In order to solve this problem, the present application proposes a hidden electric casement window.

[0030] Please refer to Figures 1 to 4 A hidden electric casement window includes a window frame 11 and a window sash 13 arranged in the window frame 11. A conversion frame 12 is provided between the window frame 11 and the window sash 13. The window sash 13 is hinged in the conversion frame 12. The conversion frame 12 includes an indoor frame profile 121 and an outdoor frame profile 122. The window frame 11 includes an outer frame outer profile 111 and an outer frame inner profile 112. The window sash 13 includes an outer sash profile 131 and an inner sash profile 132.

[0031] A first installation area 123 is formed between the indoor frame profile 121 and the outer frame inner profile 112, and the first installation area 123 is used to install the screen fan 14;

[0032] A second installation area 124 is formed between the indoor frame profile 121 and the window sash inner profile 132 , and the second installation area 124 is used for installing the motor 15 .

[0033] Among them, in a specific embodiment, in order to integrate the screen fan 14, the window sash 13 and the motor 15 in the same window frame 11 within a limited space, there is no need to use a complex additional frame to hang the screen fan 14. This application designs a conversion frame 12 so that the window sash 13 is hinged in the conversion frame 12 instead of being directly hinged in the window frame 11, thereby forming two installation areas between the window frame 11 and the window sash 13. The first installation area 123 is used to install the screen fan 14, and the second installation area 124 is used to install the motor 15, so as to solve the problem of insufficient installation space in the window frame 11.

[0034] To ensure that the concealed installation of the motor 15 does not affect the aesthetics of the window while facilitating installation and maintenance, a second installation area 124 is formed between the interior frame profile 121 and the window sash inner profile 132, and a mounting groove 125 is provided on the interior frame profile 121 for mounting the motor 15. The motor 15 is embedded in the mounting groove 125, which is simple to manufacture and has the advantages of high installation precision, convenient processing and assembly, and easy maintenance of the motor 15. The motor 15 is hidden between the conversion frame 12 and the window sash 13, which not only improves the aesthetics of the window but also simplifies the installation and maintenance process.

[0035] The sides of the outer frame profile 111 and the window sash profile 131 close to the outside are designed to be flush, making the visible surface simple and beautiful, and ensuring that there are no protrusions or depressions on the window surface.

[0036] In addition, in order to ensure the overall airtightness and waterproofness of the window, the indoor and outdoor connections between the conversion frame 12 and the window sash 13 are sealed with a sealing strip 16 composed of EPDM (a synthetic rubber) + foam sealing strip.

[0037] Compared with the prior art, the present application sets a conversion frame 12 so that the window sash 13 is hinged in the conversion frame 12, thereby forming two installation areas between the window frame 11 and the window sash 13, solving the problem in the prior art that there is no extra space to install the screen fan 14; by forming a second installation area 124 between the indoor frame profile 121 and the window sash inner profile 132, and opening an installation groove 125 on the indoor frame profile 121 for installing the motor 15, the motor 15 is hidden between the window frame 11 and the window sash 13, avoiding the problem of the motor 15 being exposed, thereby improving the aesthetics of the window, and the motor 15 is embedded in the conversion frame 12 through the installation groove 125, which also simplifies the installation and maintenance process, and improves the reliability and maintenance convenience of the window.

[0038] In specific embodiments, the concealed electric casement window of the present application can be modified and improved in various ways according to actual needs. For example, a chain connection mechanism 27 can be provided on the inner profile 132 of the window sash, which is connected to the motor 15, thereby realizing the electric opening and closing of the window sash 13. A mounting slot 125 can be provided on the indoor frame profile 121 for mounting the motor 15. The mounting slot 125 has a width of 34 mm and a height of 17 mm. In addition, a wind and rain sensor 17 can be provided at the bottom of the window frame 11, near the outdoor side, to detect changes in the external environment and automatically control the opening and closing of the window sash 13.

[0039] Furthermore, the window sash inner profile 132 and the motor 15 are connected via a chain connection mechanism 27 .

[0040] By installing a chain connection mechanism 27 between the inner profile 132 of the window sash and the motor 15, and connecting the chain connection mechanism 27 to the motor 15, the motor 15 can drive the window sash 13 to open and close via the chain connection mechanism 27. This design effectively transmits the power of the motor 15 to the window sash 13, enabling the automatic opening and closing function of the electric casement window. The provision of the chain connection mechanism 27 simplifies the connection between the motor 15 and the window sash 13, improving the convenience of installation and maintenance, while also ensuring the concealed installation of the motor 15, enhancing the overall aesthetics and reliability of the window.

[0041] In practice, the chain connection mechanism 27 may include a chain, a sprocket, and a connector. The motor 15 drives the chain via the sprocket. One end of the chain is fixed to the motor 15, and the other end is connected to the window sash 13 via a connector. When the motor 15 is started, the sprocket drives the chain, thereby driving the window sash 13 to open or close. The design of the chain connection mechanism 27 not only effectively transmits the power of the motor 15 but also, to a certain extent, cushions the impact of starting and stopping the motor 15, thereby protecting the motor 15 and the window sash 13.

[0042] Furthermore, a mounting groove 125 is provided on the indoor frame profile 121 , and the mounting groove 125 is used for mounting the motor 15 .

[0043] The installation slot 125 is provided on the interior frame profile 121. This technical feature allows the motor 15 to be conveniently installed in the installation slot 125, thereby resolving the problem of inconvenient installation of the motor 15. By providing the installation slot 125 on the interior frame profile 121, the motor 15 can be installed in a concealed manner, which does not affect the aesthetics of the window and facilitates installation and maintenance of the motor 15.

[0044] Specifically, the mounting slot 125 has a width of 34 mm and a height of 17 mm. This dimensioning allows the motor 15 to be securely mounted within the mounting slot 125 while also providing ample space for heat dissipation and maintenance. The provision of the mounting slot 125 not only simplifies the installation process of the motor 15 but also allows for easy removal and reinstallation of the motor 15 when maintenance is required, significantly improving maintenance convenience.

[0045] By providing a mounting slot 125 in the interior frame profile 121, the motor 15 can be concealed between the window frame 11 and the window sash 13, avoiding the problem of motor 15 being exposed, thereby improving the aesthetics of the window. Furthermore, the concealed installation of the motor 15 effectively protects it from external factors, extending the service life of the motor 15. Compared with the prior art, the technical solution of this application, through the rational design of the size and position of the mounting slot 125, not only solves the problem of inconvenient motor 15 installation, but also improves the overall aesthetics of the window and the service life of the motor 15, simplifies the installation and maintenance process, and enhances the reliability and maintenance convenience of the window.

[0046] Furthermore, the width of the mounting groove 125 is 34 mm, and the height is 17 mm.

[0047] In this specific embodiment, the mounting slot 125 has a width of 34 mm and a height of 17 mm. These dimensions are optimized based on the size and installation requirements of the motor 15. This optimized design ensures that the motor 15 is securely fixed within the mounting slot 125, preventing it from loosening or shifting due to external forces or vibration. Furthermore, this dimensional design allows the motor 15 to be easily removed from the mounting slot 125 for inspection or replacement when maintenance is required, greatly improving maintenance convenience.

[0048] Furthermore, a wind and rain sensor 17 is provided at the bottom of the window frame 11 close to the outside.

[0049] The wind and rain sensor 17 monitors external wind and rain conditions in real time. When inclement weather is detected, it automatically closes the window, protecting the indoor environment and preventing rain from entering the room, enhancing the window's intelligence and automation. By placing the wind and rain sensor 17 at the bottom of the window frame 11, near the outside, it effectively senses environmental changes and responds promptly, enhancing the window's safety and reliability in adverse weather conditions.

[0050] In a specific embodiment, the wind and rain sensor 17 can be a variety of sensors, such as a combination of a wind speed sensor and a rainfall sensor. The wind speed sensor detects wind speed and triggers a window closing signal when it exceeds a preset threshold. The rainfall sensor detects rainfall and triggers a window closing signal when it reaches a preset value. The wind and rain sensor 17 is connected to the window control system via a signal transmission module. Upon receiving the closing signal, the control system drives the motor 15 to close the window.

[0051] Furthermore, a conversion frame insulation strip 28 is provided between the indoor frame profile 121 and the outdoor frame profile 122, and the width of the conversion frame insulation strip 28 is 24 mm; a window sash insulation strip 29 is provided between the window sash outer profile 131 and the window sash inner profile 132, and the width of the window sash insulation strip 29 is 24 mm.

[0052] The installation of a transfer frame insulation strip 28 between the indoor frame profile 121 and the outdoor frame profile 122, as well as a window sash insulation strip 29 between the window sash outer profile 131 and the window sash inner profile 132, effectively reduces heat transfer through the transfer frame 12 and the window sash 13, thereby improving the window's thermal insulation performance. The 24mm width ensures the effectiveness of the insulation strip, which can block heat transfer to a certain extent and enhance the overall thermal insulation effect.

[0053] Furthermore, two conversion frame insulation strips 28 are arranged at intervals in the vertical direction to form a first insulation cavity 30, and two window sash insulation strips 29 are arranged at intervals in the vertical direction to form a second insulation cavity 31. The first insulation cavity 30 and the second insulation cavity 31 form a vertical insulation cavity in the vertical direction for insulation.

[0054] In this embodiment, two vertically spaced insulation strips 28 are provided on the conversion frame, forming a first insulation chamber 30. Two vertically spaced insulation strips 29 are provided on the window sash, forming a second insulation chamber 31. The first and second insulation chambers 30 and 31 form a vertical insulation chamber for heat preservation. This design effectively enhances the window's thermal insulation performance, reduces heat loss, and improves the overall thermal insulation performance of the concealed electric casement window.

[0055] Furthermore, a hinge 26 is connected between the window sash 13 and the conversion frame 12, and the hinge 26 includes a first connecting arm 261 and a second connecting arm 262. The first connecting arm 261 extends into the second insulation cavity 31 and is fixed to the inner profile 132 of the window sash, and the second connecting arm 262 extends into the indoor frame profile 121 and is fixed to the indoor frame profile 121.

[0056] Among them, by using a hinge 26 to connect the window sash 13 and the conversion frame 12, the first connecting arm 261 and the second connecting arm 262 are respectively fixed to the window sash inner profile 132 and the indoor frame profile 121, ensuring the stability and reliability of the window sash 13.

[0057] In practice, the first connecting arm 261 of the hinge 26 is secured to the inner sash profile 132 via screws or welding, ensuring its firmness and stability. The second connecting arm 262 is similarly secured to the interior frame profile 121. The design of the hinge 26 ensures smooth opening and closing of the window sash 13, preventing any loosening or wobble caused by an unstable connection.

[0058] Furthermore, the length of the first connecting arm 261 and the second connecting arm 262 is 5 mm.

[0059] In this embodiment, the length of the first connecting arm 261 and the second connecting arm 262 is set to 5 mm, allowing them to deeply connect with the window sash 13 and the conversion frame 12, ensuring the connection strength of the hinge 26 between the window sash 13 and the conversion frame 12, and avoiding problems such as unstable or loose connections caused by improper length. At the same time, to ensure that the first connecting arm 261 and the second connecting arm 262 can extend into the conversion frame 12 and the window sash 13, the conversion frame 12 and the window sash 13 are thickened at the locations where they are fixed to the connecting arms, strengthening the connection strength of the hinge 26 and increasing the safety and stability of the window.

[0060] Furthermore, a window frame heat insulation strip 32 is provided between the outer frame outer profile 111 and the outer frame inner profile 112 , and the width of the window frame heat insulation strip 32 is 39 mm.

[0061] The window frame insulation strip 32 is positioned between the outer frame profile 111 and the inner frame profile 112. Its 39mm width effectively improves the thermal insulation performance of the window frame 11. The presence of the window frame insulation strip 32 reduces heat conduction through the window frame 11, thereby enhancing the overall thermal insulation of the window. This design not only helps save energy but also improves indoor comfort.

[0062] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Persons skilled in the art will readily appreciate that the present application may be modified and altered in various ways. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A hidden electric casement window, comprising a window frame (11) and a window sash (13) arranged in the window frame (11), characterized in that: A conversion frame (12) is provided between the window frame (11) and the window sash (13), the window sash (13) is hinged in the conversion frame (12), the conversion frame (12) comprises an indoor frame profile (121) and an outdoor frame profile (122), the window frame (11) comprises an outer frame outer profile (111) and an outer frame inner profile (112), the window sash (13) comprises an outer sash profile (131) and an inner sash profile (132), A first installation area (123) is formed between the indoor frame profile (121) and the outer frame inner profile (112), and the first installation area (123) is used for installing a screen fan (14); A second installation area (124) is formed between the indoor frame profile (121) and the window sash inner profile (132), and the second installation area (124) is used for installing a motor (15).

2. A hidden electric casement window according to claim 1, characterized in that: The window sash inner profile (132) and the motor (15) are connected via a chain connection mechanism (27).

3. A hidden electric casement window according to claim 2, characterized in that: The indoor frame profile (121) is provided with a mounting groove (125), and the mounting groove (125) is used for mounting the motor (15).

4. The hidden electric casement window according to claim 3, characterized in that: The installation groove (125) has a width of 34 mm and a height of 17 mm.

5. The hidden electric casement window according to claim 1, characterized in that: A wind and rain sensor (17) is provided at the bottom of the window frame (11) close to the outdoor side.

6. The hidden electric casement window according to claim 1, characterized in that: A conversion frame heat insulation strip (28) is provided between the indoor frame profile (121) and the outdoor frame profile (122), and the width of the conversion frame heat insulation strip (28) is 24 mm; a window sash heat insulation strip (29) is provided between the window sash outer profile (131) and the window sash inner profile (132), and the width of the window sash heat insulation strip (29) is 24 mm.

7. The hidden electric casement window according to claim 6, characterized in that: The conversion frame heat-insulating strips (28) are arranged at intervals in the vertical direction to form a first heat-insulating cavity (30), and the window sash heat-insulating strips (29) are arranged at intervals in the vertical direction to form a second heat-insulating cavity (31). The first heat-insulating cavity (30) and the second heat-insulating cavity (31) form a vertical heat-insulating cavity in the vertical direction for heat preservation.

8. The hidden electric casement window according to claim 7, characterized in that: A hinge (26) is connected between the window sash (13) and the conversion frame (12), and the hinge (26) includes a first connecting arm (261) and a second connecting arm (262), wherein the first connecting arm (261) extends into the second heat-insulating cavity (31) and is fixed to the inner profile (132) of the window sash, and the second connecting arm (262) extends into the indoor frame profile (121) and is fixed to the indoor frame profile (121).

9. The hidden electric casement window according to claim 8, characterized in that: The length of the first connecting arm (261) and the second connecting arm (262) is 5 mm.

10. The hidden electric casement window according to claim 1, characterized in that: A window frame heat insulation strip (32) is provided between the outer frame outer profile (111) and the outer frame inner profile (112), and the width of the window frame heat insulation strip (32) is 39 mm.

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