Outward-opening window with built-in transmission device

Abstract

The utility model discloses an out-opening window with a built-in transmission device, which comprises a window frame and a window sash, the window sash comprises a window sash frame and window sash glass, the outer wall of one side of the window sash frame is rotatably connected with the window frame, a window frame middle sealing strip is mounted in the middle of the window frame, and a window sash middle built-in sealing strip is mounted in the middle of the window sash frame. A window sash U-shaped groove used for installing a transmission device is formed in the position, close to the window frame, of the indoor side, where the sealing strip is arranged in the middle of the window sash, in the window sash frame, the depth of the window sash U-shaped groove ranges from 4 mm to 10 mm, and window sash limiting ribs are arranged at the positions, close to the opening end, in the groove walls of the two sides of the window sash U-shaped groove respectively. The window sash C-shaped groove with the small depth in the window sash frame is changed into the window sash U-shaped groove with the large depth, so that the installation requirement of a transmission device with the large thickness is met, the window sash L-shaped groove is conveniently formed in the outer side of the indoor side groove wall of the window sash U-shaped groove, and therefore the occupied area of the window frame and the window sash frame is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a casement window, especially a built-in transmission device casement window. BACKGROUND

[0002] The casement window is a general term of a window sash outwardly opening window, which can rotate outwardly and horizontally or / and outwardly and vertically, and the casement window comprises a window frame and a window sash, the window frame can comprise a mullion or not, and the indoor side of the casement window can have a screen window or not. In order to achieve good sound insulation effect, the middle part of the window frame and the middle part of the frame of the window sash (i.e. the window sash frame) are both provided with a middle sealing strip; and in order to achieve better control function, various control structures such as switch control and lock control are installed between the window frame and the window sash frame, so that a transmission rod and other transmission devices need to be installed in the window sash frame.

[0003] For a long time, the transmission device of the casement window is installed on the outdoor side of the middle sealing strip of the window frame and the window sash frame, which requires the handle, the up and down sliding support assembly and other components to be installed on the outdoor side of the middle sealing strip of the window frame and the window sash frame. This structure has the disadvantages of moving the center of gravity outward, the long rotating force arm of the handle, the heat (or cold) from the outdoor to the indoor through the handle, the position near the outdoor side of the window frame must be provided with a protruding rib in order to install the related control components, which leads to poor drainage, etc. Therefore, in recent years, the casement window with the transmission device installed on the indoor side of the middle sealing strip of the window frame and the window sash frame, which is called as the built-in transmission device casement window, has appeared.

[0004] However, since the research and development of the built-in transmission device casement window is in the initial stage, the traditional built-in transmission device casement window still has many defects, such as Figure 1 and Figure 2The traditional transmission device built-in outer opening window shown in the figure includes a traditional window frame, a traditional window sash and a screen window. The traditional window frame includes a traditional outer frame 1 installed on a wall window and a traditional mullion 5 and a traditional conversion frame 7 arranged in the traditional outer frame 1. The traditional mullion 5 is installed in the middle of the traditional outer frame 1. The traditional conversion frame 7 is installed between the traditional mullion 5 and the traditional outer frame 1. The traditional window sash includes a traditional window sash frame 10 and window sash glass 13 (usually laminated glass) installed in the traditional window sash frame 10. The screen window includes a screen window frame 8 and screen window screen 12 installed in the screen window frame 8. The outer wall of one side of the traditional window sash frame 10 and the outer wall of one side of the screen window frame 8 are respectively rotatably connected with the traditional conversion frame 7. The middle part of the traditional outer frame 1 is provided with an outer frame middle sealing strip 2. The middle part of the traditional mullion 5 is provided with a mullion middle sealing strip 6. The middle part of the traditional conversion frame 7 is provided with a conversion frame middle sealing strip 9. The middle part of the traditional window sash frame 10 is provided with a window sash middle built-in sealing strip 11. The traditional window sash frame 10 and the traditional conversion frame 7 and the screen window frame 8 and the traditional conversion frame 7 can be in sealing contact. The specific sealing structure is that the outdoor side of the traditional window sash frame 10 is provided with a window sash outdoor sealing strip 14 for sealing contact with the outdoor side of the traditional conversion frame 7. The middle part of the traditional window sash frame 10 is provided with a window sash middle outdoor convex sealing strip 15 for sealing contact with the conversion frame middle sealing strip 9. The indoor side of the traditional conversion frame 7 is provided with a traditional conversion frame indoor sealing strip 20 for sealing contact with the indoor side of the traditional window sash frame 10. Thus, the traditional window sash frame 10 and the traditional conversion frame 7 form three layers of inner, middle and outer sealing. The screen window frame 8 is provided with a screen window sealing strip 21 for sealing contact with the traditional conversion frame 7. The position close to the outdoor side between the traditional mullion 5 and the traditional outer frame 1 is provided with a traditional fixed glass 4 (usually laminated glass, and the traditional fixed glass 4 can also be located at the upper part of the entire window frame). The indoor side between the traditional outer frame 1 and the traditional mullion 5 is provided with a traditional pressing strip 3 for clamping the edge of the traditional fixed glass 4. The traditional pressing strip 3 is connected with the traditional mullion 5 through clamping connection. The position of the traditional window sash frame 10 close to the traditional conversion frame 7 and located on the indoor side of the window sash middle built-in sealing strip 11 is provided with a window sash "C" shaped groove 18 for installing a transmission device. The groove walls of the two sides of the window sash "C" shaped groove 18 are small in depth, generally 1-3 mm. The positions close to the opening ends of the groove walls of the two sides of the window sash "C" shaped groove 18 are respectively provided with window sash limiting rib strips 19. The position corresponding to the window sash "C" shaped groove 18 on the traditional conversion frame 7 is provided with a conversion frame "C" shaped groove 16. The groove walls of the two sides of the conversion frame "C" shaped groove 16 are small in depth, generally 1-3 mm. The positions close to the opening ends of the groove walls of the two sides of the conversion frame "C" shaped groove 16 are respectively provided with conversion frame limiting rib strips 17.

[0005] The traditional transmission device built-in out-opening window has the following defects: first, the depth of the sash "C" shaped groove 18 is small, which is suitable for the previous single transmission bar with small thickness, but is not suitable for the transmission bar assembly with large thickness which has been applied for patent by the applicant, the sash "C" shaped groove 18 cannot place the new transmission bar assembly, and the inner side groove wall of the sash "C" shaped groove 18 cannot form a sealing groove matched with the traditional conversion frame inner side sealing strip 20, the traditional conversion frame inner side sealing strip 20 can only be matched and sealed with the corresponding outer wall of the traditional sash frame 10 away from the traditional conversion frame 7, which on the one hand increases the occupied area of the traditional sash frame 10 and the traditional conversion frame 7, reduces the effective area of the sash glass, that is, reduces the light transmission area of the sash, and on the other hand reduces the gap between the traditional conversion frame 7 and the screen window frame 8, which may affect the normal installation of the screen window frame 8; second, the surface of the traditional compression strip 3 is a horizontal or vertical plane, not an inclined plane, which is easy to accumulate dust and dirt and water between the traditional compression strip 3 and the traditional fixed glass 4, if the surface of the traditional compression strip 3 is changed to an inclined plane, there is still a problem that the traditional compression strip 3 is not easy to be stably installed because there is no groove at the corresponding edge position on the traditional outer frame 1 and the traditional mullion 5; at the same time, there is no groove on one side of the traditional mullion 5 close to the traditional screen window sealing strip 21, which is not conducive to the position of the screen window sealing strip 21, and to a certain extent, the occupied area of the traditional conversion frame 7 is increased to solve the problem; third, the overall thickness of the traditional fixed glass 4 is small, the inner side edge thereof is located in the corresponding area of the outer frame middle sealing strip 2 and the mullion middle sealing strip 6 and does not correspond to the rib for installing the corresponding sealing strip on the traditional outer frame 1 and the traditional mullion 5, which is equivalent to that the lower part of the outer side edge of the traditional fixed glass 4 is supported by the outer side of the traditional mullion 5, but the lower part of the inner side edge of the traditional fixed glass 4 is supported by the mullion middle sealing strip 6, which has insufficient bearing capacity and may cause the mullion middle sealing strip 6 to be deformed, affecting the stability of the traditional fixed glass 4; fourth, the two side groove walls of the conversion frame "C" shaped groove 16 have conversion frame limiting ribs 17, and the conversion frame limiting rib 17 close to the outer side has a certain influence on the installation of the transmission device. Practical new type content

[0006] The utility model discloses a kind of transmission device built-in out-opening windows for solving above-mentioned problems, which is convenient to install transmission bar assembly with large thickness.

[0007] The utility model discloses the following technical scheme to realize the above-mentioned purpose:

[0008] The application discloses a transmission device built-in type out-opening window, which comprises a window frame and a window sash, the window sash comprises a window sash frame and window sash glass installed in the window sash frame, one side outer wall of the window sash frame is rotationally connected with the window frame, a middle part of the window frame is provided with a window frame middle part built-in sealing strip, a middle part of the window sash frame is provided with a window sash middle part sealing strip, a window sash "U" shaped groove for installing a transmission device is arranged on the window sash frame and located on the indoor side of the window sash middle part built-in sealing strip and close to the window frame, the depth of the window sash "U" shaped groove is 4-10 mm, and the two side groove walls of the window sash "U" shaped groove are respectively provided with a window sash limiting rib close to the opening end.

[0009] As preferred, in order to facilitate the indoor sealing with the window frame and realize more close matching effect, the indoor side groove wall of the window sash "U" shaped groove is provided with a window sash "L" shaped groove, the indoor side of the window frame is provided with a window frame indoor side sealing strip at the position corresponding to the window sash "L" shaped groove, and the window frame indoor side sealing strip can be arranged in the window sash "L" shaped groove and closely contact with the groove wall.

[0010] As preferred, in order to meet the use requirement of large window, the window frame comprises an outer frame installed on the wall window, a mullion (which can be a horizontal mullion or / and a vertical mullion) and a conversion frame (which is connected with the outer frame or the mullion and is used for installing the sash frame and the screen frame and can also be integrated with the outer frame and the mullion) installed in the outer frame (which refers to the square hole surrounded by the section of the outer frame and is a common expression), the mullion is installed in the middle part of the outer frame (which refers to the middle part of the square hole surrounded by the section of the outer frame and is the middle area but not necessarily the center position and is a common expression), the conversion frame is installed between the mullion and the outer frame, the middle part sealing strip of the window frame comprises an outer frame middle part sealing strip, a mullion middle part sealing strip and a conversion frame middle part sealing strip, one side outer wall of the sash frame is rotationally connected with the conversion frame, the outer frame middle part (which refers to the middle part of the indoor and outdoor direction in the section of the outer frame and is a common expression) is installed with the outer frame middle part sealing strip, the mullion middle part (which refers to the middle part of the indoor and outdoor direction in the section of the mullion and is a common expression) is installed with the mullion middle part sealing strip, the conversion frame middle part (which refers to the middle part of the indoor and outdoor direction in the section of the conversion frame and is a common expression) is installed with the conversion frame middle part sealing strip, the sash "U" shaped groove is located close to the conversion frame, the indoor side of the conversion frame is installed with a conversion frame indoor side sealing strip at the position corresponding to the sash "L" shaped groove, and the window frame indoor side sealing strip is the conversion frame indoor side sealing strip.

[0011] As preferred, in order to meet the application requirement and increase the stability of the whole window, a fixed glass (which is a fixedly connected laminated glass and generally has no additional frame and can be located above or below the horizontal mullion or on one side of the vertical mullion) is installed between the mullion and the outer frame close to the outdoor side, a pressing strip for clamping the edge of the fixed glass is installed between the indoor side of the outer frame and the mullion, the pressing strip is connected with the mullion through clamping connection, the surface of the pressing strip is an inclined surface and the included angle between the inclined surface and the fixed glass is an obtuse angle (preferably 100-150°), an "L" shaped groove is arranged on the side of the outer frame and the mullion close to the indoor side edge and close to the pressing strip, and one end of the indoor side of the pressing strip is installed in the corresponding "L" shaped groove.

[0012] As preferred, in order to increase the screen function and facilitate the closing of the screen, the transmission device built-in out-opening window further comprises a screen, the screen comprises a screen frame and a screen mesh mounted in the screen frame (i.e. in the square hole surrounded by the profile of the screen frame, which is a commonly used expression), one side wall of the screen frame is rotationally connected with the conversion frame, a screen sealing strip for sealing contact with the conversion frame is mounted on the screen frame, the outer frame and the mullion are also provided with "L"-shaped grooves near the edge of the indoor side and near the side of the screen sealing strip, and a part or all of the screen sealing strip is placed in the corresponding "L"-shaped groove.

[0013] As preferred, in order to improve the support strength of the fixed glass, the lower part of the indoor side edge of the fixed glass is above the rib supporting the inner side of the middle part sealing strip of the mullion or above the rib supporting the inner side of the middle part sealing strip of the outer frame.

[0014] As preferred, in order to minimize the impact on the installation of the transmission device under the premise of meeting the application requirements, the conversion frame limiting groove corresponding to the "U"-shaped groove of the sash is provided on the conversion frame, one side groove wall of the conversion frame limiting groove is 1-3mm deep, and the side groove wall is provided with a conversion frame limiting rib near the opening end, and the other side groove wall of the conversion frame limiting groove is 0-1mm deep.

[0015] As preferred, in order to form an outer, middle and inner three-layer sealing structure between the sash and the window frame to achieve better sealing effect, an outdoor side of the sash frame is provided with a sash outdoor side sealing strip for sealing contact with the outdoor side of the conversion frame, and a middle part of the sash frame is provided with a sash middle part outer convex sealing strip for sealing contact with the conversion frame middle part sealing strip.

[0016] The beneficial effects of the utility model lie in:

[0017] This utility model improves the window sash by replacing the shallow "C"-shaped groove inside the window sash frame with a deeper "U"-shaped groove, thus meeting the installation requirements of thicker transmission devices. An "L"-shaped groove is provided on the outer side of the interior wall of the "U"-shaped groove, allowing it to fit tightly with the inner sealing strip of the window frame. This reduces the area occupied by the window frame and sash frame, thereby increasing the effective area of ​​the window glass and thus increasing the light transmission area. Furthermore, it reduces the gap between the window frame and the screen frame, preventing interference with the normal installation of the screen frame. By beveling the surface of the glazing strip, dust, dirt, and water can be prevented from accumulating between the glazing strip and the fixed glass, making cleaning easier and maintaining cleanliness. Meanwhile, an "L"-shaped groove is provided on the outer frame and mullion near the interior edge to ensure reliable installation of the glazing strip. A groove is also provided on the mullion near the screen sealing strip to allow space for the screen sealing strip, reducing the area occupied by the transition frame to some extent. Finally, placing the interior edge of the fixed glass above the corresponding rib on the outer frame or mullion increases the load-bearing capacity and improves the stability of the fixed glass. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a cross-sectional structure of a traditional transmission device with an internally installed outward-opening window. The cross-sectional lines on the cross-sectional plane are not shown in the figure.

[0019] Figure 2 yes Figure 1 Enlarged image of the letter "A" in the image;

[0020] Figure 3 This is a cross-sectional view of the built-in outward-opening window of the transmission device described in this utility model. The sectional line is not shown on the cross-sectional plane.

[0021] Figure 4 yes Figure 3 A magnified view of the letter "B". Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figure 3 and Figure 4As shown, the utility model discloses a transmission device built-in outer opening window includes window frame (reference below described outer frame 31, mullion 35 and conversion frame 37) and sash, the sash includes sash frame 40 and installs in sash frame 40's sash glass 13 (is laminated glass), sash frame 40's one side outer wall is connected with the rotation of window frame, the middle part of window frame is equipped with window frame middle part sealing strip (reference below described outer frame middle part sealing strip 2, mullion middle part sealing strip 6 and conversion frame middle part sealing strip 9), the middle part of sash frame 40 is equipped with sash middle part built-in sealing strip 11, the indoor side (the right side in the drawing) of sash middle part built-in sealing strip 11 in sash frame 40 and the position close to window frame is equipped with the sash " U " shape groove 48 for installing transmission device (not shown in the drawing), the depth of sash " U " shape groove 48 is 4-10mm, and the position close to the opening end in the two side groove walls of sash " U " shape groove 48 is equipped with sash limiting rib 19 respectively.

[0024] As Figure 3 And Figure 4 As shown, the utility model discloses the following multiple more optimal specific structure:

[0025] In order to facilitate with window frame and form indoor side sealing and realize more closely cooperation effect, the indoor side groove wall of sash " U " shape groove 48 is equipped with sash " L " shape groove 52, and the indoor side of window frame is equipped with window frame indoor side sealing strip (reference below described conversion frame indoor side sealing strip 50) in the position corresponding with sash " L " shape groove 52, and the window frame indoor side sealing strip can be placed in sash " L " shape groove 52 and closely contact with its groove wall.

[0026] In order to satisfy the use demand of larger window, the window frame includes the outer frame 31 installed in the wall window and the mullion 35 and conversion frame 37 arranged in the outer frame 31, the mullion 35 is installed in the middle part of the outer frame 31, and the conversion frame 37 is installed between the mullion 35 and the outer frame 31, the window frame middle part sealing strip includes the outer frame middle part sealing strip 2, the mullion middle part sealing strip 6 and the conversion frame middle part sealing strip 9, one side outer wall of sash frame 40 is connected with the rotation of conversion frame 37, the middle part of outer frame 31 is equipped with outer frame middle part sealing strip 2, the middle part of mullion 35 is equipped with mullion middle part sealing strip 6, the middle part of conversion frame 37 is equipped with conversion frame middle part sealing strip 9, sash " U " shape groove 48 is located at the position close to conversion frame 37, and conversion frame 37 is equipped with conversion frame indoor side sealing strip 50 in the position corresponding with sash " L " shape groove 52, and the window frame indoor side sealing strip is conversion frame indoor side sealing strip 50.

[0027] In order to meet the application requirements and increase the stability of the whole window, the fixed glass 34 (which is a laminated glass) is installed between the mullion 35 and the outer frame 31 near the outdoor side, the compression strip 33 for clamping the edge of the fixed glass 34 is installed between the indoor side of the outer frame 31 and the mullion 35, the compression strip 33 is connected with the mullion 35 through a clamping connection, the surface of the compression strip 33 is a bevel and the included angle between the bevel and the fixed glass 34 is obtuse, the outer frame 31 and the mullion 35 are provided with "L" shaped grooves 53 near the indoor side edge and the side close to the compression strip 33, and the indoor side end of the compression strip 33 is installed in the corresponding "L" shaped groove 53.

[0028] In order to increase the function of the screen window and facilitate the closing of the screen window, the transmission device built-in out-opening window further comprises a screen window, the screen window comprises a screen window frame 8 and a screen window screen 12 installed in the screen window frame 8, one side outer wall of the screen window frame 8 is rotationally connected with the conversion frame 37, the screen window frame 8 is provided with a screen window sealing strip 21 for sealing contact with the conversion frame 37, the outer frame 31 and the mullion 35 are also provided with "L" shaped grooves 53 near the indoor side edge and the side close to the screen window sealing strip 21, and a part or all of the screen window sealing strip 21 is placed in the corresponding "L" shaped groove 53 (in the figure, it seems that the screen window sealing strip 21 is not placed in the corresponding "L" shaped groove 53, but in actual application, at least a part of the screen window sealing strip 21 is placed in the corresponding "L" shaped groove 53 due to extrusion deformation and other reasons, if all of the screen window sealing strip 21 is placed in the corresponding "L" shaped groove 53, the occupied area of the conversion frame 37 can be better reduced, so it is a more optimized structure that all of the screen window sealing strip 21 is placed in the corresponding "L" shaped groove 53 in actual application).

[0029] In order to improve the support strength of the fixed glass 34, the indoor side edge of the fixed glass 34 is located above the rib (not marked in the figure) supporting the inner side of the mullion middle sealing strip 6 on the mullion 35 or above the rib (not marked in the figure) supporting the inner side of the outer frame middle sealing strip 2 on the outer frame 31.

[0030] In order to minimize the impact on the installation of the transmission device under the premise of meeting the application requirements, the conversion frame 37 is provided with a conversion frame limiting groove 46 at the position corresponding to the "U" shaped groove 48 of the sash, one side groove wall of the conversion frame limiting groove 46 has a depth of 1-3 mm and the side groove wall is provided with a conversion frame limiting rib 17 near the opening end, the other side groove wall of the conversion frame limiting groove 46 has a depth of 0-1 mm.

[0031] In order to form an outer, middle and inner three-layer sealing structure between the sash and the window frame to achieve better sealing effect, the outdoor side of the sash frame 40 is provided with a sash outdoor side sealing strip 14 for sealing contact with the outdoor side of the conversion frame 37, and the middle part of the sash frame 40 is provided with a sash middle part outer convex sealing strip 15 for sealing contact with the conversion frame middle sealing strip 9.

[0032] As Figure 3 and Figure 4 shown, the application will be connected with the door handle (not shown in the figure) of various transmission devices (not shown in the figure, can be referred to the related patents of the applicant, mainly transmission bar, has been applied and authorized) in the corresponding part of the window sash "U" groove 48 and the conversion frame limiting groove 46, and the limiting is carried out by using the window sash limiting rib 19 and the conversion frame limiting rib 17, and the connection is carried out by using the screw. After installing the transmission device, the outer frame 31 is installed in the wall window hole, and the whole outer opening window is installed. When the window sash is closed, the window sash and the conversion frame 37 of the window frame form three layers of sealing between the window sash outside sealing strip 14, the window sash middle part outside convex sealing strip 15 and the conversion frame inside sealing strip 50, and good sealing effect is realized.

[0033] Description: The outer frame 31, the pressing strip 33, the fixed glass 34, the mullion 35, the conversion frame 37, the window sash frame 40, the conversion frame inside sealing strip 50 in the above content are one-to-one corresponding to the traditional outer frame 1, the traditional pressing strip 3, the traditional fixed glass 4, the traditional mullion 5, the traditional conversion frame 7, the traditional window sash frame 10 and the traditional conversion frame inside sealing strip 20 in the background technology content, but because the related structure has changed, different mark numbers are adopted; The outer frame middle sealing strip 2, the mullion middle sealing strip 6, the screen window frame 8, the conversion frame middle sealing strip 9, the window sash middle built-in sealing strip 11, the screen window screen 12, the window sash glass 13, the window sash outside sealing strip 14, the window sash middle part outside convex sealing strip 15, the conversion frame limiting rib 17, the window sash limiting rib 19, the screen window sealing strip 21 in the above content are completely the same as the corresponding component names and mark numbers in the background technology content, because the structures of these components do not change or do not have to change.

[0034] The above embodiments are only preferred embodiments of the present application, and are not a limitation on the technical solutions of the present application. Any technical solution that can be realized on the basis of the above embodiments without creative labor should be considered to fall within the protection scope of the present application.

Claims

1. A transmission device-integrated outward-opening window, comprising a window frame and a window sash, the window sash comprising a window sash frame and window sash glass installed within the window sash frame, one outer wall of the window sash frame being rotatably connected to the window frame, a middle sealing strip of the window frame being installed in the middle of the window sash frame, and a middle-mounted sealing strip of the window sash being installed in the middle of the window sash frame, characterized in that: The sash "U" shaped groove is provided with a sash limiting rib on the side groove wall near the opening end.

2. The in-swinging window-in-drive according to claim 1, characterized in that: The indoor side groove wall of the sash "U" shaped groove is provided with a sash "L" shaped groove, and the indoor side of the window frame is provided with a window frame indoor side sealing strip corresponding to the sash "L" shaped groove.

3. The in-swinging window in gear unit according to claim 2, characterized in that: The window frame comprises an outer frame installed on a wall window, a mullion installed in the middle of the outer frame, and a conversion frame installed between the mullion and the outer frame.

4. The in-swinging window in gear unit according to claim 3, characterized in that: The mullion and the outer frame are provided with fixed glass near the outdoor side, and the indoor side of the outer frame and the mullion is provided with a pressing strip for clamping the edge of the fixed glass.

5. The in-swinging window in gear unit according to claim 4, characterized in that: The transmission device built-in casement window further comprises a screen window, and the screen window comprises a screen window frame and a screen window screen installed in the screen window frame.

6. A transmission built-in out-swinging window according to claim 4 or 5, characterized in that: The indoor side edge of the fixed glass is above the rib supporting the mullion middle sealing strip on the mullion or above the rib supporting the outer frame middle sealing strip on the outer frame.

7. A transmission built-out casement window according to any one of claims 3 to 5 wherein: The conversion frame is provided with a conversion frame limiting groove corresponding to the sash "U" shaped groove, and the depth of one side groove wall of the conversion frame limiting groove is 1-3 mm.

8. A transmission built-out casement window according to any one of claims 3 to 5 wherein: The outdoor side of the sash frame is provided with a sash outdoor sealing strip for sealing contact with the outdoor side of the conversion frame, and the middle part of the sash frame is provided with a sash middle outdoor convex sealing strip for sealing contact with the middle part sealing strip of the conversion frame.

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