Building skylight with glass guardrail and screen window

Abstract

The invention relates to the technical field of building skylights, and discloses a building skylight provided with a glass guardrail and a screen window, which is applied to a building roof and comprises a skylight main body, the skylight main body comprises a window frame mounted on the building roof, a window body arranged in the window frame and a main shaft fixed on the rear side of the window body, and the main shaft is rotatably connected to the window frame; the snow removing window further comprises a snow removing mechanism, the snow removing mechanism is arranged on the window frame, and the snow removing mechanism comprises a cavity formed in the window frame, a U-shaped frame inserted into the cavity in a limited mode and a bottom plate fixed to the bottom end of the U-shaped frame. According to the building skylight provided with the glass guardrail and the screen window, the snow removing mechanism is arranged, the adhesive force of accumulated snow and the skylight can be actively destroyed when the U-shaped frame ascends, the three sets of shovel plates distributed in the U shape form three inclined snow guiding faces through the rotating shafts, the accumulated snow is guided to slide towards the outer side of a building, and the accumulated snow can be pushed outwards in the overturning process; therefore, the potential safety hazard that a large amount of accumulated snow falls into a room when the skylight is opened is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of building skylights, and particularly to a building skylight equipped with a glass guardrail and a window screen. Background Art

[0002] In modern architectural design, building skylights are highly favored for their unique advantages. Among them, skylights equipped with glass guardrails and window screens not only have excellent compressive and impact resistance properties, effectively preventing accidental falls of personnel and providing safety protection for the safety of indoor personnel, but also can block mosquitoes from flying into the room in summer, keeping the indoor space comfortable. At the same time, by opening the skylight, the air exchange between indoor and outdoor can be promoted, improving the indoor air quality.

[0003] A prior art of an automatically cleanable daylighting roof building structure with the publication number of CN118563995A includes a roof main body. A light-transmitting window body is fixedly installed on the upper surface of the roof main body. A cleaning mechanism for cleaning the light-transmitting window body is arranged on the upper surface of the roof main body. A water supply component for supplying water to the cleaning mechanism is arranged on one side of the roof main body. The cleaning mechanism includes an electric push rod. A storage rack is fixedly connected to the upper surface of the roof main body. The electric push rod is fixedly connected to one side of the storage rack. One end of the electric push rod is fixedly connected to an extension rod. One end of the extension rod is fixedly connected to a push block. A side frame is fixedly connected to the upper surface of the roof main body. Although the above technical solution can drive the push block to move by using the electric push rod, and at the same time drive the soft brush, the water-absorbing cotton and the cleaning cotton to clean the skylight, achieving the purpose of automatically cleaning the skylight.

[0004] However, in actual use, since the skylight is installed on the top of the building and lacks a shielding structure, in rainy and snowy weather, especially in heavy snow environments, snow accumulation is extremely easy to form on the top of the skylight. 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 prior art, although opening the skylight outwards can cause the snow on the top to slide off naturally, at the moment when the skylight is opened, the change of the surrounding support structure of the skylight will cause the snow that has accumulated around the skylight to suddenly lose support and thus fall into the indoor space. This not only may cause safety hazards such as smashing and bruising to indoor personnel, but also the melted snow that falls indoors will generate a large amount of accumulated water, which will further cause secondary damages such as wall mildew and floor deformation. Currently, for this problem, some designs choose to install heating wires around the skylight and use heating to melt the snow, but this method consumes a large amount of electricity, and the heating wires are easily damaged when exposed to rainy and snowy environments for a long time. Summary of the Invention

[0005] The object of the present invention is to provide a building skylight equipped with a glass guardrail and a window screen, so as to solve the problems in the prior art that in rainy and snowy weather, there is a threat to the structural safety due to the accumulation of snow around the existing building skylights, and when the skylight is opened, the surrounding snow will fall into the house due to the loss of support.

[0006] A building skylight equipped with a glass guardrail and a window screen provided by the present invention adopts the following technical solutions: A building skylight equipped with a glass guardrail and a window screen is applied to a building roof and includes a skylight main body. The skylight main body includes a window frame installed on the building roof, a window body arranged in the window frame, and a main shaft fixed to the rear side of the window body. The main shaft is rotatably connected to the window frame. It also includes a snow removal mechanism. The snow removal mechanism is arranged on the window frame. The snow removal mechanism includes a cavity opened in the window frame, a U-shaped frame inserted and limited in the cavity, and a bottom plate fixed to the bottom end of the U-shaped frame. Among them, a groove is opened on the side wall of the U-shaped frame facing away from the window body. Three groups of shovel plates distributed in a U shape are arranged in the groove. Each group of shovel plates is rotatably connected to the groove through a rotating shaft, and universal joints are connected between adjacent two groups of rotating shafts; When snow removal is not required, the U-shaped frame is completely received in the cavity, the top of the U-shaped frame is flush with the top entrance of the cavity, and the shovel plates are attached to the groove. When snow removal is carried out, the U-shaped frame and the shovel plates are controlled to extend, and the three groups of shovel plates are turned over through the rotating shafts to form an inclined snow guiding surface.

[0007] Furthermore, a driving mechanism is arranged in the cavity. The driving mechanism includes a threaded rod rotatably connected in the cavity, a worm gear fixed to the threaded rod, a worm meshing with the worm gear, a driven gear fixed to the worm, a driving gear meshing with the driven gear, and a shaft rod fixed to the center of the driving gear. Among them, the threaded rod is threadedly connected to the bottom plate; A back plate is detachably installed on the rear side of the window frame, and a housing is installed on the back plate. A motor is installed in the housing, and the output end of the motor is fixedly connected to one end of the shaft rod. The shaft rod is rotatably connected in the housing.

[0008] Furthermore, a flipping mechanism is arranged at one end of the main shaft. The flipping mechanism includes a first bevel gear fixed to one end of the main shaft, a second bevel gear meshingly connected with the first bevel gear, and a connecting shaft fixed to the center of the second bevel gear. A vertical shell is detachably installed on the window frame. The main shaft and the connecting shaft are both rotatably connected to the vertical shell. Among them, the other end of the connecting shaft penetrates outside the vertical shell and is fixed with a first contact disk.

[0009] Further, the flipping mechanism further includes a cam fixed on the rotating shaft, a connecting rope fixed on the cam, and a winding rod rotatably connected to the U-shaped frame. The other end of the connecting rope is fixed and wound around the winding rod. A second contact disk adapted to the first contact disk is fixed to the end of the winding rod away from the U-shaped frame. Among them, friction disks are provided at the centers of the sides of the first contact disk and the second contact disk close to each other.

[0010] Further, a torsion spring is provided on the winding rod, and both ends of the torsion spring are fixed to the winding rod and the U-shaped frame respectively.

[0011] Further, a vertical rod penetrates through the bottom plate, and both the upper and lower ends of the vertical rod are fixed in the cavity.

[0012] Further, a notch for the driven gear and the driving gear to mesh is provided between the back plate and the housing.

[0013] Further, flexible blocking strips are provided at the inner edges of the top entrance of the cavity.

[0014] Further, the bottom end of the inner wall of the cavity is inclined.

[0015] Further, a plurality of groups of drain holes are provided on the window frame, and among them, the drain holes communicate with the cavity.

[0016] Advantages of the present invention: 1. By providing the snow removal mechanism, when the U-shaped frame rises, it can actively break the adhesion force between the snow and the skylight. The three groups of shovel plates distributed in a U-shape are linked and flipped through the rotating shaft and the universal joint to form three inclined snow guiding surfaces, guiding the snow to slide outside the building. During the flipping process, the snow can also be pushed outwards, effectively avoiding the safety hazard of a large amount of snow falling into the room when the skylight is opened. The U-shaped frame and the shovel plates can be integrated into the cavity of the window frame, and are completely stored when not in use, without affecting the lighting and sealing of the skylight, and at the same time can greatly reduce energy consumption and maintenance costs.

[0017] 2. By providing the flipping mechanism, when the window is opened outwards, the main shaft drives the connecting shaft to rotate through the first bevel gear and the second bevel gear. The friction disks of the first contact disk and the second contact disk are coupled to drive the winding rod to tighten the connecting rope, so that the shovel plate flips. The opening angle of the window determines the flipping degree of the shovel plate. The larger the opening angle, the larger the flipping angle of the shovel plate and the wider the snow removal range. The synchronous action of the three groups of shovel plates can cover the snow-covered areas on the three sides of the window, avoiding the blind area of snow removal at a fixed angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the skylight main body of the present invention; Figure 3 Schematic top view structure diagram of the window frame, window body, main shaft, back plate and housing of the present invention; Figure 4 Schematic rear three-dimensional structural cross-sectional view of the window frame of the present invention; Figure 5 Schematic partial three-dimensional structure diagram of the U-shaped frame and the shovel plate of the present invention; Figure 6 For the present invention Figure 5 Schematic exploded three-dimensional structure diagram of the U-shaped frame and the shovel plate in the middle; Figure 7 For the present invention Figure 6 Schematic partial top view structure diagram of the shovel plate in the middle; Figure 8 Schematic exploded three-dimensional structure diagram of the window frame and the back plate of the present invention; Figure 9 Schematic three-dimensional structure diagram of the driving mechanism of the present invention; Figure 10 Schematic three-dimensional structure diagram of the main shaft, U-shaped frame and shovel plate of the present invention; Figure 11 For the present invention Figure 10 Schematic enlarged structure diagram of part A; Figure 12 Schematic rear view structure diagram of the U-shaped frame, rotating shaft, cam, connecting rope and winding rod of the present invention; Figure 13 Schematic left three-dimensional structure unfolded state diagram of the U-shaped frame and the shovel plate of the present invention; Figure 14 Schematic rear three-dimensional structure unfolded state diagram of the U-shaped frame and the shovel plate of the present invention; Figure 15 For the present invention[[ID=…]] Figure 14 Schematic enlarged structure diagram of part B.

[0019] In the figure: 100, skylight main body; 101, window frame; 102, window body; 103, main shaft; 104, back plate; 105, housing; 106, vertical housing; 107, drain 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 strip; 300, driving mechanism; 301, threaded rod; 302, worm gear; 303, worm; 304, driven gear; 305, driving gear; 306, shaft rod; 307, motor; 308, vertical rod; 400, flipping mechanism; 401, first bevel gear; 402, second bevel gear; 403, connecting shaft; 404, first contact disc; 405, cam; 406, connecting rope; 407, winding rod; 408, second contact disc; 409, torsion spring. Detailed implementation manners

[0020] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following provides a detailed description of the specific implementation manners of the present invention in conjunction with the accompanying drawings of the specification.

[0021] Referring to Figure 1 - Figure 2 , the present invention provides a building skylight equipped with a glass guardrail and a window screen, which is applied to a building roof and includes a skylight main body 100. The skylight main body 100 includes a window frame 101 installed on the building roof, a window body 102 arranged 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 translatable and slidable window screen is installed at the opening of the window frame 101.

[0022] Referring to Figure 2 - Figure 7 , it further includes a snow removal mechanism 200. The snow removal mechanism 200 is arranged on the window frame 101 and includes a cavity 201 opened in the window frame 101, a U-shaped frame 202 inserted and limited in the cavity 201, and a bottom plate 203 fixed to the bottom end of the U-shaped frame 202. Among them, a groove 204 is opened 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. Each group of shovel plates 205 is rotatably connected to the groove 204 through a rotating shaft 206, and adjacent two groups of rotating shafts 206 are connected through a universal joint 207. The universal joint 207 uses a double cross-axis universal joint combination as the connecting member for connecting adjacent two groups of rotating shafts 206. Specifically, the double cross-axis universal joint is formed by connecting two single cross-axis universal joints in series through an intermediate shaft to form a constant velocity universal joint structure. When a group 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 the adjacent other group of rotating shafts 206 through the second cross-axis universal joint to achieve torque transmission.

[0023] When there is no snow removal requirement, the snow removal mechanism 200 is in a completely retracted state. The U-shaped frame 202 and the three groups of shovel plates 205 are integrally inserted and limited in 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 main body 100 is flat without protrusions. The shovel plates 205 are closely attached to the groove 204 to avoid affecting the daylighting and sealing performance of the skylight.

[0024] In the snow removal state, the control base plate 203 is raised to push the U-shaped frame 202 and the snow shovel plate 205 to rise vertically, so that the snow shovel plate 205 is completely exposed from the top entrance of the cavity 201. The three groups of snow shovel plates 205 are linked through the rotating shaft 206 and the universal joint 207, and synchronously turn outwards under the action of the snow accumulation resistance to form an inclined snow guiding surface surrounding on three sides. By raising the U-shaped frame 202, the snow can be actively broken, and the adhesion force between the snow accumulation and the surrounding of the skylight main body 100 can be destroyed. The inclined surface formed by the outward turning of the snow shovel plate 205 can guide the snow to slide along the inclined surface to the outside of the building.

[0025] Among them, referring to Figure 8 - Figure 9 , a driving mechanism 300 is arranged in the cavity 201. The driving mechanism 300 includes a threaded rod 301 rotatably connected in the cavity 201, a worm wheel 302 fixed on the threaded rod 301, a worm 303 meshed with the worm wheel 302, a driven gear 304 fixed on the worm 303, a driving gear 305 meshed with the driven gear 304, and a shaft rod 306 fixed at the center of the driving gear 305. Among them, the threaded rod 301 is threadedly connected with the base plate 203. A vertical rod 308 penetrates through the base plate 203, and both the upper and lower ends of the vertical rod 308 are fixed in the cavity 201. The vertical rod 308 plays a role in limiting and supporting the base plate 203. It should be noted that both the threaded rod 301 and the worm wheel 302 are rotatably connected in the cavity 201 through bearings.

[0026] A back plate 104 is detachably installed on the rear side of the window frame 101. An outer shell 105 is installed on the back plate 104. A motor 307 is installed in the outer shell 105. The output end of the motor 307 is fixedly connected with one end of the shaft rod 306. The shaft rod 306 is rotatably connected in the outer shell 105. It should be noted that a notch for the meshing of the driven gear 304 and the driving gear 305 is provided between the back plate 104 and the outer shell 105.

[0027] Among them, the installation method of the motor 307 is as follows: The main power line is led out from the building internal power supply interface, laid along the concealed wire groove preset on the inner side of the window frame 101 to the position of the back plate 104. A sealed wire passing hole is opened on the back plate 104. The main power line enters the interior of the outer shell 105 through the wire passing hole, is connected to the wiring terminal of the motor 307, and the controller is installed on the wall near the skylight indoors 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, aiming to ensure the stability of electrical connection and the convenience of operation, so the specific installation details will not be elaborated further.

[0028] 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.

[0029] Further, refer to Figure 9 - Figure 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.

[0030] 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.

[0031] 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.

[0032] A torsion spring 409 is arranged on the winding rod 407. The two ends of the torsion spring 409 are respectively fixed on the winding rod 407 and the U-shaped frame 202. The torsion spring 409 can provide a reset elastic force to enable the cam 405 and the shovel plate 205 to be smoothly reset to the initial state.

[0033] Refer to Figure 13 , the inner bottom end of the cavity 201 is inclined, and can guide the infiltrated snowmelt, rainwater and other liquids along the inclined surface to drain outwards, avoiding the retention of liquids in the cavity 201. A plurality of groups of drain holes 107 are opened on the window frame 101. Among them, the drain holes 107 communicate with the cavity 201 to form a drainage channel, so that the liquid can be discharged outside the window frame 101 in time.

[0034] Refer to Figure 15 , flexible strips 208 are arranged on the inner edges at the top entrance of the cavity 201. The flexible strips 208 can block larger sundries 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 strips 208 can buffer the collision between it and the entrance of the cavity 201.

[0035] The working principle of a building skylight equipped with a glass guardrail and a window screen according to the present invention is as follows: When snow removal is required, the motor 307 is turned on. The output end of the motor 307 drives the shaft rod 306 to rotate, driving the driving gear 305 to rotate synchronously. The driving gear 305 transmits power through tooth engagement to the driven gear 304, controlling the worm 303 and the worm gear 302 to rotate accordingly, and then driving the threaded rod 301 to rotate within the cavity 201. The threaded rod 301 is threadedly connected to the bottom plate 203, and a vertical rod 308 for limiting support penetrates through the bottom plate 203. Therefore, the bottom plate 203 moves linearly upward along the inner wall of the cavity 201, driving the U-shaped frame 202 fixedly connected thereto to rise smoothly, so that the snow shovel 205 within the U-shaped frame 202 gradually extends from the top entrance of the cavity 201 until it is completely exposed in the snow-covered area around the skylight. When the U-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 meshing second bevel gear 402 to rotate, causing the connecting shaft 403 to rotate, and then driving the first contact disc 404 to rotate. At this time, the second contact disc 408 is in close contact with the first contact disc 404, and the friction plates at the centers of both come into contact to generate frictional force. The rotation of the first contact disc 404 drives the second contact disc 408 to rotate synchronously through the frictional force. The winding rod 407 connected to the second contact disc 408 starts to rotate, tightening the connecting rope 406 wound around it. As the connecting rope 406 is tightened, the cam 405 drives the rotating shaft 206 to rotate under the action of the pulling force, and then drives the snow shovel 205 to flip around the rotating shaft 206. At the same time, the adjacent two groups of rotating shafts 206 are connected by a universal joint 207. The universal joint adopts a double cross-axis universal joint combination. When one group 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 the adjacent other group of rotating shafts 206 through the second cross-axis universal joint to achieve torque transmission, enabling the three snow shovels 205 to flip outward synchronously to form an inclined snow guiding surface surrounding on three sides. The upward movement of the U-shaped frame 202 actively breaks the snow, destroying the adhesion between the snow and the surrounding of the skylight main body 100. The inclined surface formed by the outward flipping of the snow shovel 205 guides the snow to slide along the inclined surface to the outside of the building, completing the snow removal.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A building skylight equipped with a glass guardrail and a window screen, applied to a building roof, comprising a skylight main body (100). The skylight main body (100) includes a window frame (101) installed on the building roof, a window body (102) arranged 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 is characterized in that, It further includes a snow removal mechanism (200), the snow removal mechanism (200) is arranged on the window frame (101), the snow removal mechanism (200) includes a cavity (201) opened in the window frame (101), a U-shaped frame (202) inserted and limited in the cavity (201), and a bottom plate (203) fixed to the bottom end of the U-shaped frame (202). Among them, a groove (204) is opened 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). Each group of shovel plates (205) is rotatably connected in the groove (204) through a rotating shaft (206), and adjacent two groups of rotating shafts (206) are connected through a universal joint (207). When snow removal is not required, the U-shaped frame (202) is completely received 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) are attached to 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) form an inclined snow guiding surface through rotation around the rotating shaft (206).

2. The building skylight equipped with a glass guardrail and a window screen according to claim 1, wherein: A driving mechanism (300) is arranged in the cavity (201), the driving mechanism (300) includes a threaded rod (301) rotatably connected in 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 rod (306) fixed at the center of the driving gear (305). Among them, the threaded rod (301) is threadedly connected to the bottom plate (203). A back plate (104) is detachably installed on the rear side of the window frame (101), a housing (105) is installed on the back plate (104), a motor (307) is installed in the housing (105), the output end of the motor (307) is fixedly connected to one end of the shaft rod (306), and the shaft rod (306) is rotatably connected in the housing (105).

3. The building skylight equipped with a glass guardrail and a window screen according to claim 1, characterized in that: One end of the main shaft (103) is provided with a flipping mechanism (400), the flipping mechanism (400) includes a first bevel gear (401) fixed to one end of the main shaft (103), a second bevel gear (402) meshingly connected to the first bevel gear (401), and a connecting shaft (403) fixed at the center of the second bevel gear (402). A vertical housing (106) is detachably installed on the window frame (101), and the main shaft (103) and the connecting shaft (403) are both rotatably connected to the vertical housing (106). Among them, the other end of the connecting shaft (403) penetrates outside the vertical housing (106) and is fixed with a first contact disc (404).

4. The building skylight equipped with a glass guardrail and a window screen 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 equipped with a glass guardrail and a window screen 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 equipped with a glass guardrail and a window screen 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 equipped with a glass guardrail and a window screen according to claim 2, wherein: 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 equipped with a glass guardrail and a window screen 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 equipped with a glass guardrail and a window screen 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 equipped with a glass guardrail and a window screen 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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