A building skylight with glass guardrails and screens

Abstract

The present invention relates to the technical field of building skylights, and discloses a building skylight equipped with a glass guardrail and a screen window, which is applied to a building roof and includes a skylight body, the skylight body including a window frame mounted on the building roof, a window body disposed in the window frame, and a main shaft fixed to the rear side of the window body, the main shaft being rotatably connected to the window frame, and further including a snow removal mechanism disposed on the window frame, the snow removal mechanism including a cavity defined in the window frame, a C-shaped frame limitedly inserted into the cavity, and a bottom plate fixed to the bottom end of the C-shaped frame. The building skylight equipped with a glass guardrail and a screen window is provided with a snow removal mechanism, and when the C-shaped frame rises, it can actively break the adhesion of snow to the skylight. Three sets of C-shaped shovels are distributed through a rotating shaft to form three inclined snow guide surfaces, guiding snow to slide toward the outside of the building. During the turning process, the snow can be pushed outward, thereby effectively avoiding the safety hazard of a large amount of snow falling into the room when the skylight is opened.

Description

Technical Field

[0001] The present invention relates to the technical field of building skylights, and in particular to a building skylight equipped with glass guardrails and screen windows. Background Art

[0002] In modern architectural design, building skylights are highly favored due to their unique advantages. Among them, skylights equipped with glass guardrails and screens not only have excellent pressure and impact resistance, effectively preventing people from accidentally falling and providing safety protection for indoor personnel, but also can block mosquitoes from flying into the room in summer and keep the indoor space comfortable. At the same time, opening the skylight can promote indoor and outdoor air exchange and improve indoor air quality.

[0003] The existing publication number CN118563995A discloses an automatically cleanable skylight roof building structure, which includes a roof main body, a light-transmitting window fixedly installed on the upper surface of the roof main body, a cleaning mechanism for cleaning the light-transmitting window provided on the upper surface of the roof main body, and a water supply component for supplying water to the cleaning mechanism provided on one side of the roof main body; the cleaning mechanism includes an electric push rod, a storage rack fixedly connected to the upper surface of the roof main body, the electric push rod fixedly connected to one side of the storage rack, an extension rod fixedly connected to one end of the electric push rod, a push block fixedly connected to one end of the extension rod, and a side frame fixedly connected to the upper surface of the roof main body; although the above technical solution can achieve the purpose of automatically cleaning the skylight by utilizing the electric push rod to drive the push block to move, and at the same time drive the soft brush, absorbent cotton and cleaning cotton to clean the skylight.

[0004] However, in actual use, since the skylight is installed on the top of the building and lacks a shielding structure, snow is easily accumulated on the top of the skylight in rainy and snowy weather, especially in heavy snow environments. The heavy snow not only seriously weakens the lighting effect, but also generates a continuous load on the skylight structure, threatening the structural safety. In the existing technology, although the skylight can be opened outward to cause the snow on the top to slide naturally, at the moment the skylight is opened, the changes in the surrounding supporting structure will cause the snow originally accumulated around the skylight to suddenly lose support and fall into the indoor space. This may not only cause safety hazards such as injuries to indoor personnel, but the fallen snow will also produce a large amount of water after melting indoors, which will cause secondary damage such as mildew on the walls and deformation of the floor. At present, some designs have chosen to install heating wires around the skylight to melt the snow by heating, but this method consumes a lot of electricity, and the heating wires are easily damaged when exposed to rain and snow for a long time. Summary of the Invention

[0005] The purpose of the present invention is to provide a building skylight equipped with a glass guardrail and a screen window to solve the problem proposed in the above background technology that in rainy and snowy weather, the existing building skylights are subject to accumulation of snow around and threaten the structural safety, and when the skylight is opened, the surrounding snow will fall into the house due to loss of support.

[0006] The present invention provides a building skylight equipped with glass guardrails and screen windows, which adopts the following technical solutions:

[0007] A building skylight equipped with a glass guardrail and a screen window, applied to a building roof, comprises a skylight body, the skylight body comprising a window frame mounted on the building roof, a window body disposed in the window frame, and a main shaft fixed to the rear side of the window body, the main shaft being rotatably connected to the window frame, and further comprising a snow removal mechanism disposed on the window frame, the snow removal mechanism comprising a cavity defined in the window frame, a C-shaped frame positionally inserted in the cavity, and a bottom plate fixed to the bottom end of the C-shaped frame, wherein a groove is defined on a side wall of the C-shaped frame facing away from the window body, wherein three groups of shovel plates distributed in a C-shape are disposed in the groove, each group of shovel plates being rotatably connected in the groove via a rotating shaft, and adjacent groups of rotating shafts being connected via a universal joint;

[0008] When there is no need to remove snow, the C-shaped frame is completely stored in the cavity, the top of the C-shaped frame is flush with the top entrance of the cavity, and the shovel blade fits into the groove. When removing snow, the C-shaped frame and the shovel blade are controlled to extend, and the three sets of shovel blades are flipped through the rotating shaft to form an inclined snow-guiding surface.

[0009] Furthermore, a driving mechanism is provided in the cavity, comprising a threaded rod rotatably connected to the cavity, a worm wheel fixed to the threaded rod, a worm meshing with the worm wheel, a driven gear fixed to the worm, a driving gear meshing with the driven gear, and a shaft fixed at the center of the driving gear, wherein the threaded rod is connected to the base plate by a thread;

[0010] A back plate is detachably mounted on the rear side of the window frame, a shell is mounted on the back plate, a motor is mounted in the shell, an output end of the motor is fixedly connected to one end of a shaft, and the shaft is rotatably connected in the shell.

[0011] Furthermore, a flip mechanism is provided at one end of the main shaft, and the flip mechanism includes a first bevel tooth fixed at one end of the main shaft, a second bevel tooth meshing with the first bevel tooth, and a connecting shaft fixed at the center of the second bevel tooth. A vertical shell is detachably mounted on the window frame, and the main shaft and the connecting shaft are both rotatably connected to the vertical shell, wherein the other end of the connecting shaft passes through the outside of the vertical shell and is fixed with a first contact disk.

[0012] Furthermore, the flipping mechanism also includes a cam fixed on the rotating shaft, a connecting rope fixed on the cam, and a winding rod rotatably connected to the C-shaped frame, the other end of the connecting rope is fixed and wound on the winding rod, and the end of the winding rod facing away from the C-shaped frame is fixed with a second contact plate adapted to the first contact plate, wherein friction plates are provided at the center of the side close to the first contact plate and the second contact plate.

[0013] Furthermore, a torsion spring is provided on the winding rod, and two ends of the torsion spring are respectively fixed on the winding rod and the U-shaped frame.

[0014] Furthermore, a vertical pole passes through the bottom plate, and the upper and lower ends of the vertical pole are fixed in the cavity.

[0015] Furthermore, a gap is provided between the back plate and the housing for the driven gear and the driving gear to mesh.

[0016] Furthermore, flexible baffles are provided on the inner edges of the top entrance of the cavity.

[0017] Furthermore, the bottom end of the inner wall of the cavity is arranged in an inclined shape.

[0018] Furthermore, the window frame is provided with a plurality of drainage holes, wherein the drainage holes and the cavity are interconnected.

[0019] Beneficial effects of the present invention:

[0020] 1. By incorporating a snow removal mechanism, the U-shaped frame actively breaks the adhesion between snow and the skylight when it rises. Three sets of U-shaped shovels rotate in a coordinated manner via a rotating shaft and universal joints, forming three inclined snow guide surfaces that guide snow to slide toward the outside of the building. The snow is also pushed outward during the rotation process, effectively avoiding the safety hazard of large amounts of snow falling into the room when the skylight is opened. The U-shaped frame and shovels can be integrated into the cavity of the window frame and completely stowed when not in operation, without affecting the lighting and sealing of the skylight, while significantly reducing energy consumption and maintenance costs.

[0021] 2. By setting a flip mechanism, when the window is opened outward, the main shaft drives the connecting shaft to rotate through the first bevel gear and the second bevel gear. The friction plates of the first contact disc and the second contact disc are coupled to drive the winding rod to tighten the connecting rope, so that the shovel blade flips. The opening angle of the window determines the flipping degree of the shovel blade. The larger the opening angle, the larger the flipping angle of the shovel blade and the wider the snow removal range. The synchronous action of the three sets of shovel blades can cover the snow-accumulated areas on three sides of the window, avoiding the blind spots of snow removal at fixed angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2This is a schematic diagram of the three-dimensional structure of the main body of the skylight of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the window frame, window body, main shaft, back plate and shell of the present invention from a top view;

[0025] Figure 4 It is a schematic cross-sectional view of the rear-view stereoscopic structure of the window frame of the present invention;

[0026] Figure 5 It is a schematic diagram of the partial three-dimensional structure of the U-shaped frame and the shovel plate of the present invention;

[0027] Figure 6 For the present invention Figure 5 Explosion diagram of the three-dimensional structure at the center U-shaped frame and shovel plate;

[0028] Figure 7 For the present invention Figure 6 Schematic diagram of the partial top view of the structure at the middle shovel plate;

[0029] Figure 8 This is an exploded schematic diagram of the three-dimensional structure of the window frame and back panel of the present invention;

[0030] Figure 9 It is a schematic diagram of the three-dimensional structure of the driving mechanism of the present invention;

[0031] Figure 10 It is a schematic diagram of the three-dimensional structure of the main shaft, the U-shaped frame and the shovel plate of the present invention;

[0032] Figure 11 For the present invention Figure 10 A schematic diagram of the structure at center A;

[0033] Figure 12 It is a rear view structural diagram of the U-shaped frame, rotating shaft, cam, connecting rope and winding rod of the present invention;

[0034] Figure 13 It is a schematic diagram of the left-side three-dimensional structure of the U-shaped frame and the shovel plate of the present invention in an expanded state;

[0035] Figure 14 It is a schematic diagram of the rear-view stereoscopic structure of the U-shaped frame and the shovel plate of the present invention in an unfolded state;

[0036] Figure 15 For the present invention Figure 14 A magnified schematic diagram of the structure at point B in the middle.

[0037] In the picture:

[0038] 100, skylight body; 101, window frame; 102, window body; 103, main shaft; 104, back plate; 105, outer shell; 106, vertical shell; 107, drainage hole; 200, snow removal mechanism; 201, cavity; 202, U-shaped frame; 203, bottom plate; 204, groove; 205, shovel plate; 206, rotating shaft; 207, universal joint; 208, flexible stop bar; 300, driving mechanism; 301, Threaded rod; 302, worm gear; 303, worm; 304, driven gear; 305, driving gear; 306, shaft; 307, motor; 308, vertical pole; 400, flipping mechanism; 401, first bevel gear; 402, second bevel gear; 403, connecting shaft; 404, first contact plate; 405, cam; 406, connecting rope; 407, winding rod; 408, second contact plate; 409, torsion spring. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] Reference Figure 1-Figure 2 The present invention provides a building skylight equipped with a glass guardrail and a screen, which is applied to the roof of a building, including a skylight body 100. The skylight body 100 includes a window frame 101 installed on the roof of the building, a window body 102 set in the window frame 101, and a main shaft 103 fixed to the rear side of the window body 102. The main shaft 103 is rotatably connected to the window frame 101, and a screen that can slide horizontally is installed at the opening of the window frame 101.

[0041] Reference Figure 2-Figure 7 , also includes a snow removal mechanism 200, which is arranged on the window frame 101. The snow removal mechanism 200 includes a cavity 201 opened in the window frame 101, a C-shaped frame 202 limitedly inserted in the cavity 201, and a bottom plate 203 fixed to the bottom end of the C-shaped frame 202. A groove 204 is opened on the side wall of the C-shaped frame 202 away from the window body 102, and three groups of C-shaped shovel plates 205 are arranged in the groove 204. Each group of shovel plates 205 is rotatably connected to the groove 204 through a rotating shaft 206. The two adjacent groups of rotating shafts 206 are connected by universal joints 207. The universal joints 207 use a double cross-axis universal joint combination as a connecting piece connecting the two adjacent groups of rotating shafts 206. Specifically, the double cross-axis universal joint is composed of two single cross-axis universal joints connected in series through an intermediate shaft to form a constant velocity universal joint structure. When one group of rotating shafts 206 rotates, power is transmitted to the intermediate shaft through the first cross-axis universal joint, and the intermediate shaft then transmits the power to the other adjacent group of rotating shafts 206 through the second cross-axis universal joint to achieve torque transmission.

[0042] When there is no need to remove snow, the snow removal mechanism 200 is in a fully retracted state, and the U-shaped frame 202 and the three sets of shovel plates 205 are integrally limited and inserted into the cavity 201. At this time, the top of the U-shaped frame 202 is flush with the top entrance of the cavity 201, ensuring that the surface of the skylight body 100 is flat and has no protrusions, and the shovel plates 205 fit tightly in the grooves 204 to avoid affecting the lighting and sealing performance of the skylight.

[0043] In the snow removal state, the base plate 203 is controlled to rise, pushing the C-shaped frame 202 and the shovel plate 205 to rise vertically, so that the shovel plate 205 is completely exposed from the top entrance of the cavity 201. The three groups of shovel plates 205 are linked by the rotating shaft 206 and the universal joint 207, and are synchronously flipped outward under the action of the resistance of the accumulated snow, forming an inclined snow-guiding surface surrounded on three sides. The rising of the C-shaped frame 202 can actively break the snow and destroy the adhesion of the snow to the surrounding skylight body 100. The inclined surface formed by the outward flipping of the shovel plate 205 can guide the accumulated snow to slide along the inclined surface toward the outside of the building.

[0044] Among them, reference Figure 8-Figure 9 A driving mechanism 300 is provided in the cavity 201, and the driving mechanism 300 includes a threaded rod 301 rotatably connected to the cavity 201, a worm gear 302 fixed on the threaded rod 301, a worm 303 meshing with the worm gear 302, a driven gear 304 fixed on the worm 303, a driving gear 305 meshing with the driven gear 304, and a shaft 306 fixed at the center of the driving gear 305, wherein the threaded rod 301 is connected to the base plate 203 by a thread, and a vertical rod 308 passes through the base plate 203, and the upper and lower ends of the vertical rod 308 are fixed in the cavity 201, and the vertical rod 308 serves as a limiting support for the base plate 203. It should be noted that the threaded rod 301 and the worm gear 302 are both rotatably connected in the cavity 201 through bearings.

[0045] A back panel 104 is detachably mounted on the rear side of the window frame 101, a housing 105 is mounted on the back panel 104, a motor 307 is mounted inside the housing 105, an output end of the motor 307 is fixedly connected to one end of a shaft 306, and the shaft 306 is rotatably connected inside the housing 105. It should be noted that a gap is provided between the back panel 104 and the housing 105 for the driven gear 304 and the driving gear 305 to engage with each other.

[0046] Among them, the installation method of motor 307 is: lead out the main power line from the power interface inside the building, lay it along the preset hidden wire trough on the inner side of the window frame 101 to the position of the back panel 104, and open a sealed wire hole on the back panel 104. The main power line enters the inside of the shell 105 through the wire hole and is connected to the terminal of the motor 307. The controller is installed on the wall near the skylight in the room and is connected to the motor 307 through an independent line. The line is also laid in a concealed manner. This installation method is an existing technical means, which aims to ensure the stability of electrical connection and the convenience of operation, so the specific installation details will not be elaborated.

[0047] By turning on the motor 307 installed in the housing 105, the output end of the motor 307 drives the shaft 306 to rotate, driving the driving gear 305 to rotate synchronously. The rotation of the driving gear 305 transmits power to the driven gear 304 through the engagement between the teeth. The driven gear 304 is coaxially fixed with the worm 303, so the worm 303 rotates together with the driven gear 304. The helical teeth of the worm 303 drive the worm wheel 302 to rotate. The rotation of the worm wheel 302 drives the threaded rod 301 to rotate in the cavity 201. The rotational motion of the threaded rod 301 is converted into a linear upward motion of the base plate 203 along the inner wall of the cavity 201, driving the U-shaped frame 202 fixed thereto to rise steadily, so that the shovel plate 205 in the U-shaped frame 202 gradually extends from the top entrance of the cavity 201 until it is completely exposed to the snow area around the skylight.

[0048] Further, refer to Figures 9-15 A flip mechanism 400 is provided at one end of the main shaft 103. Specifically, the flip mechanism 400 includes a first bevel gear 401 fixed to one end of the main shaft 103, a second bevel gear 402 meshing with the first bevel gear 401, and a connecting shaft 403 fixed at the center of the second bevel gear 402. A vertical shell 106 is detachably mounted on the window frame 101. The main shaft 103 and the connecting shaft 403 are both rotatably connected to the vertical shell 106. The other end of the connecting shaft 403 passes through the outside of the vertical shell 106 and is fixed with a first contact disk 404.

[0049] Specifically, the flipping mechanism 400 also includes a cam 405 fixed on the rotating shaft 206, a connecting rope 406 fixed on the cam 405, and a winding rod 407 rotatably connected to the C-shaped frame 202, the other end of the connecting rope 406 is fixed and wound on the winding rod 407, and the end of the winding rod 407 facing away from the C-shaped frame 202 is fixed with a second contact disc 408 adapted to the first contact disc 404, wherein the first contact disc 404 and the second contact disc 408 are both provided with friction plates at the center of the side close to each other. In the snow removal state, the C-shaped frame 202 rises to the highest position. At this time, the second contact disc 408 is tightly fitted with the first contact disc 404, and the friction plates at the centers of the two contact each other to generate friction. The rotation of the first contact disc 404 can drive the second contact disc 408 to rotate synchronously through the friction force.

[0050] By opening the window 102 outward, the main shaft 103 drives the connecting shaft 403 to rotate through the interaction of the first bevel gear 401 and the second bevel gear 402, thereby driving the first contact disc 404 to rotate. When the first contact disc 404 and the second contact disc 408 are coupled through the friction plate, the winding rod 407 is driven to tighten the connecting rope 406, and the cam 405 is pulled to cause the rotating shaft 206 to drive the shovel plate 205 to flip. By converting the daily window opening action into snow removal power, no additional operating steps are required, thus solving the tedious problem of traditional snow removal requiring manual operation.

[0051] The winding rod 407 is provided with a torsion spring 409 , the two ends of which are fixed to the winding rod 407 and the U-shaped frame 202 respectively. The torsion spring 409 can provide a reset elastic force to smoothly reset the cam 405 and the shovel plate 205 to their initial state.

[0052] Reference Figure 13 The bottom end of the inner wall of the cavity 201 is inclined, which can guide the infiltrated snowmelt water, rainwater and other liquids to be discharged outward along the slope to avoid the liquid from being retained in the cavity 201. The window frame 101 is provided with multiple groups of drainage holes 107, wherein the drainage holes 107 and the cavity 201 are interconnected to form a drainage channel, so that the liquid can be discharged from the window frame 101 in time.

[0053] Reference Figure 15 , the inner edge of the top entrance of the cavity 201 is provided with a flexible baffle 208, which can prevent large debris such as dust and leaves from entering the cavity 201. At the same time, when the U-shaped frame 202 descends and resets, the flexible baffle 208 can buffer its collision with the entrance of the cavity 201.

[0054] The present invention provides a building skylight equipped with glass guardrails and screens, and the working principle is as follows: when snow removal is required, the motor 307 is turned on, the output end of the motor 307 drives the shaft 306 to rotate, driving the driving gear 305 to rotate synchronously, the driving gear 305 transmits power to the driven gear 304 through the inter-tooth engagement, and controls the worm 303 and the worm wheel 302 to rotate accordingly, thereby driving the threaded rod 301 to rotate in the cavity 201, the threaded rod 301 is threadedly connected to the bottom plate 203, and the bottom plate 203 is penetrated by a vertical rod 308 that serves as a limit support, so that the bottom plate 203 moves linearly upward along the inner wall of the cavity 201, driving the C-shaped frame 202 fixedly connected thereto to rise steadily, so that the shovel plate 205 in the C-shaped frame 202 gradually extends from the top entrance of the cavity 201 until it is completely exposed to the snow area around the skylight. When the C-shaped frame 202 rises to the highest position, the window 102 is opened outward, and the main shaft 103 rotates accordingly. The first bevel gear 401 fixed at one end of the main shaft 103 drives the second bevel gear 402 engaged therewith to rotate, causing the connecting shaft 403 to rotate, thereby driving the first contact plate 404 to rotate. At this time, the second bevel gear 401 is fixed at one end of the main shaft 103 to rotate. The second contact disc 408 fits tightly with the first contact disc 404, and the friction plates at the center of the two contact each other to generate friction. The rotation of the first contact disc 404 drives the second contact disc 408 to rotate synchronously through the friction force. The winding rod 407 connected to the second contact disc 408 starts to rotate, tightening the connecting rope 406 wound thereon. As the connecting rope 406 is tightened, the cam 405 drives the rotating shaft 206 to rotate under the action of tension, and then drives the shovel plate 205 to flip around the rotating shaft 206. At the same time, the two adjacent sets of rotating shafts 206 are connected by the universal joint 207. Then, the universal joint adopts a double cross-axis universal joint combination. When one set of rotating shafts 206 rotates, the power is transmitted to the intermediate shaft through the first cross-axis universal joint, and the intermediate shaft then transmits the power to another adjacent set of rotating shafts 206 through the second cross-axis universal joint, realizing torque transmission, so that the three sets of shovel plates 205 are synchronously flipped outward to form an inclined snow-guiding surface surrounded by three sides. The rising of the C-shaped frame 202 actively breaks the snow, destroying the adhesion of the snow to the surrounding skylight body 100. The inclined surface formed by the outward flipping of the shovel plates 205 guides the snow to slide along the inclined surface toward the outside of the building, completing snow removal.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A building skylight equipped with a glass guardrail and a screen window, applied to a building roof, comprising a skylight body (100), the skylight body (100) comprising a window frame (101) mounted on the building roof, a window body (102) disposed in the window frame (101), and a main shaft (103) fixed to the rear side of the window body (102), the main shaft (103) being rotatably connected to the window frame (101), characterized in that: The window frame (101) further comprises a snow removal mechanism (200), wherein the snow removal mechanism (200) is arranged on the window frame (101), and the snow removal mechanism (200) comprises a cavity (201) provided in the window frame (101), a U-shaped frame (202) limitedly inserted in the cavity (201), and a bottom plate (203) fixed to the bottom end of the U-shaped frame (202), wherein a groove (204) is provided on the side wall of the U-shaped frame (202) facing away from the window body (102), and three groups of shovel plates (205) distributed in a U-shape are arranged in the groove (204), and each group of shovel plates (205) is rotatably connected in the groove (204) via a rotating shaft (206), and two adjacent groups of rotating shafts (206) are connected via a universal joint (207); When snow removal is not required, the U-shaped frame (202) is completely stored in the cavity (201), the top of the U-shaped frame (202) is flush with the top entrance of the cavity (201), and the shovel plates (205) fit into the groove (204). When snow removal is required, the U-shaped frame (202) and the shovel plates (205) are controlled to extend, and the three groups of shovel plates (205) are turned over by the rotating shaft (206) to form an inclined snow guide surface.

2. The building skylight with glass guardrails and screens according to claim 1, characterized in that: A driving mechanism (300) is provided in the cavity (201), the driving mechanism (300) comprising a threaded rod (301) rotatably connected to the cavity (201), a worm wheel (302) fixed to the threaded rod (301), a worm (303) meshing with the worm wheel (302), a driven gear (304) fixed to the worm (303), a driving gear (305) meshing with the driven gear (304), and a shaft (306) fixed at the center of the driving gear (305), wherein the threaded rod (301) is connected to the base plate (203) via a threaded connection; A back plate (104) is detachably mounted on the rear side of the window frame (101), a housing (105) is mounted on the back plate (104), a motor (307) is mounted in the housing (105), an output end of the motor (307) is fixedly connected to one end of a shaft (306), and the shaft (306) is rotatably connected in the housing (105).

3. The building skylight with glass guardrails and screens according to claim 1, characterized in that: A flip mechanism (400) is provided at one end of the main shaft (103), and the flip mechanism (400) includes a first bevel tooth (401) fixed to one end of the main shaft (103), a second bevel tooth (402) meshingly connected to the first bevel tooth (401), and a connecting shaft (403) fixed at the center of the second bevel tooth (402). A vertical shell (106) is detachably mounted on the window frame (101), and the main shaft (103) and the connecting shaft (403) are both rotatably connected to the vertical shell (106), wherein the other end of the connecting shaft (403) passes through the outside of the vertical shell (106) and is fixed with a first contact disk (404).

4. The building skylight with glass guardrails and screens according to claim 3, characterized in that: The flip mechanism (400) further comprises a cam (405) fixed on the rotating shaft (206), a connecting rope (406) fixed on the cam (405), and a winding rod (407) rotatably connected to the U-shaped frame (202), the other end of the connecting rope (406) being fixed to and wound around the winding rod (407), and a second contact disc (408) adapted to the first contact disc (404) being fixed to one end of the winding rod (407) facing away from the U-shaped frame (202), wherein friction plates are provided at the centers of the adjacent sides of the first contact disc (404) and the second contact disc (408).

5. The building skylight with glass guardrails and screens according to claim 4, characterized in that: The winding rod (407) is provided with a torsion spring (409), and two ends of the torsion spring (409) are respectively fixed on the winding rod (407) and the U-shaped frame (202).

6. The building skylight with glass guardrails and screens according to claim 2, characterized in that: A vertical rod (308) passes through the bottom plate (203), and the upper and lower ends of the vertical rod (308) are fixed in the cavity (201).

7. The building skylight with glass guardrails and screens according to claim 2, characterized in that: A notch is provided between the back plate (104) and the housing (105) for meshing the driven gear (304) and the driving gear (305).

8. The building skylight with glass guardrails and screens according to claim 1, characterized in that: Flexible blocking strips (208) are provided on the inner edges of the top entrance of the cavity (201).

9. The building skylight with glass guardrails and screens according to claim 1, characterized in that: The bottom end of the inner wall of the cavity (201) is arranged in an inclined shape.

10. The building skylight with glass guardrails and screens according to claim 9, characterized in that: The window frame (101) is provided with a plurality of drainage holes (107), wherein the drainage holes (107) and the cavity (201) are interconnected.

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