PVC plastic-wood ventilation window

Abstract

Provided in the present invention is a PVC plastic-wood ventilation window, wherein a transmission mechanism for driving a plurality of slats to rotate synchronously is provided inside one vertical frame, the plurality of slats are rotatably connected and assembled between two vertical frames, and a horizontal frame is assembled and connected at each of the top and bottom of the two vertical frames. Compared with the prior art, in the present invention, when the included angle between an inclined surface and a vertical surface is 18.43°, the component of force in the horizontal direction is weakened, and the force received by the slats that attempts to rotate the slats is smaller. Therefore, the included angle being designed to be 18.43° allows the slat to be less likely to rotate, thereby reducing the push-open rate. When the slats are driven by an external force to rotate, the direction of the force is exactly opposite, and in this case, a labor-saving pulley system formed by a large pulley, a small pulley and a fixed pulley is converted into a laborious pulley system, such that the slats are less likely to be pushed open, thereby reducing the probability of the slats being pushed open, reducing the push-open rate of the slats, and further reducing the push-open rate.

Description

A PVC plastic wood ventilation window Technical Field

[0001] The invention relates to the technical field of louver doors, louvers or grilles, and in particular to a PVC plastic-wood ventilation window. Background Art

[0002] PVC-plastic-wood ventilation windows are made from a blend of PVC and natural materials such as wood fiber. These windows combine the weather resistance and UV resistance of PVC with the natural feel and texture of wood fiber, offering excellent environmental performance and decorative effects. PVC-plastic-wood ventilation windows typically feature natural wood grain or antique-like textures, blending seamlessly with the natural environment while providing excellent ventilation and lighting. However, existing ventilation windows are susceptible to external forces, causing the blades to rotate and open. Furthermore, existing ventilation windows are integrated, making them inconvenient for e-commerce transportation. Therefore, a PVC-plastic-wood ventilation window has been proposed. Summary of the Invention

[0003] In order to solve at least one of the above-mentioned technical shortcomings, the present invention provides a PVC plastic-wood ventilation window, comprising two horizontal frames and a plurality of fan blades made of PVC plastic wood. A transmission mechanism is provided inside a vertical frame for driving the plurality of fan blades to rotate synchronously. The plurality of fan blades are rotatably connected and assembled between the two vertical frames. The top and bottom of the two vertical frames are assembled and connected with horizontal frames. The transmission mechanism is used to drive the fan blades to rotate and to reduce the probability of the plurality of fan blades being pushed open by external force after closing.

[0004] Furthermore, the fan blades include a rotating shaft, and blades are extended from the middle of the rotating shaft to the upper and lower sides. A gear sleeve is provided at one end of the rotating shaft, and a connecting sleeve is provided at the other end of the rotating shaft. The connection between the connecting sleeve and the gear sleeve and the shaft of the rotating shaft are both provided with a socket hole, and the socket hole is engaged with the rotating shaft. The inner wall of the socket hole is provided with a recess, and the outer walls of both ends of the rotating shaft are provided with protrusions, which are engaged with the recess. The blades include two vertical surfaces parallel to each other and two inclined surfaces parallel to each other.

[0005] Furthermore, the included angle between the inclined surface and the vertical surface is 18.43°, the included angle between the inclined surface and the vertical plane is 18.43°, and the included angle between the vertical plane and the horizontal plane is 90°.

[0006] Furthermore, the vertical frame includes a square tube, a through groove is opened on one side of the square tube, a T-shaped block is assembled in the through groove, a U-shaped block is assembled on the inner side of the T-shaped block inside the square tube, and a plurality of through holes are opened in the middle of the U-shaped block and the T-shaped block, and the through holes are rotatably connected to the shaft of the connecting sleeve and the gear sleeve. The teeth of the gear sleeve are located between the U-shaped block and the T-shaped block, and the toothed belt of the transmission mechanism is meshed and connected to the periphery of the plurality of gear sleeves. The teeth of the toothed belt are located on the inner surface meshed with the gear sleeve, and the inner surface of the toothed belt that is not meshed with the gear sleeve is not provided with teeth. The L connecting block of the transmission mechanism is fixedly connected to the outer surface of the toothed belt in the area where no teeth are provided.

[0007] Furthermore, the horizontal frame includes a base plate, and a reinforcing rib is provided on the surface of one side of the base plate close to the blade. The structure of the reinforcing rib is the same as that of the blade. Insertion blocks 1 are provided on the outer sides of both ends of the surface of the base plate close to the blade. Insertion blocks 1 are inserted into the gap between the square tube and the U-shaped block at both ends of the square tube. Insertion blocks 2 are provided on the inner sides of both ends of the surface of the base plate close to the blade. Insertion blocks 2 are inserted into the gap between the U-shaped block and the T-shaped block at both ends of the square tube.

[0008] Furthermore, rotating rods are provided at both ends of the outer side of the U-shaped block, and fixed rods are provided on the inner sides of the rotating rods. A sliding groove is provided at the position where the U-shaped block is flush with the area where the toothed belt is not provided with teeth. A through sliding groove is provided in the middle of the side of the square tube, and a control block is provided for sliding connection inside the through sliding groove. The transmission mechanism also includes three fixed shafts fixedly connected to one side of the L-connecting block, two large pulleys are provided on the fixed shaft in the middle of the L-connecting block, small pulleys are provided on the fixed shafts on both sides of the L-connecting block, fixed pulleys are provided on the rotating rods, and fixed pulleys are provided on the fixed rods. A traction rope is fixedly connected, and the traction rope on the upper side passes around the small pulley on the upper side, then passes around the fixed pulley on the upper side, and then passes around the large pulley on the middle outside. The other end of the traction rope is fixedly connected to the control block, and the fixed rod on the lower side is fixedly connected to the traction rope on the lower side. The traction rope on the lower side passes around the small pulley on the lower side, then passes around the fixed pulley on the lower side, and then passes around the large pulley on the middle inside. The other end of the traction rope is fixedly connected to the control block. The traction rope includes a fixed end and a pulling end. The fixed end is fixed on the fixed rod, and the pulling end is fixed on the control block.

[0009] Furthermore, the cross-section of the through-chute is T-shaped, and the control block is composed of a friction block, a T-shaped connecting block and a threaded barrel. The friction block is slidably connected to the inside of the through-chute, and a T-shaped connecting block is provided in the middle of the lower surface of the friction block. The T-shaped connecting block is clamped on the inner side of the through-chute, and two threaded barrels are provided at the diagonal positions on the lower surface of the T-shaped connecting block. The pulling end of the traction rope is integrally connected with a threaded rod made of plastic, and the threaded rod is connected to the threaded barrel.

[0010] Furthermore, the two large pulleys are provided with anti-slip sleeves, and the anti-slip sleeves are provided with two anti-slip channels corresponding to the traction rope. The anti-slip channels are each provided with a tangent hole and a wire entry groove. The traction rope enters from the tangent hole, passes through the anti-slip channel and is led out from the wire entry groove.

[0011] Furthermore, the tangent hole is arranged in parallel with the direction of entry and exit of the traction rope of the wire entry groove.

[0012] Furthermore, one side of the L-connecting block is slidably supported on the T-shaped block, and the other side of the L-connecting block is slidably supported on the inner wall of the sliding groove. Beneficial effects:

[0013] 1. During assembly, first assemble several fan blades between the vertical frames, and then assemble the two horizontal frames to the top and bottom of the two vertical frames. When controlling the rotation of the fan blades, drive the transmission mechanism to make the transmission mechanism drive several fan blades to rotate synchronously, so that the fan blades can rotate and close. When the fan blades are pushed by the wind, external force acts on the surface of the fan blades, pushing the fan blades to rotate. The effort lever formed by the transmission mechanism makes the fan blades difficult to push open, reducing the chance of being pushed open.

[0014] 2. When the angle between the inclined surface and the vertical surface is 18.43°, the horizontal component of the force will be weakened, and the force received by the fan blades trying to rotate will be smaller. Therefore, the 18.43° angle design makes the fan blades more difficult to rotate.

[0015] 3. When the upper traction rope is pulled upward, the anti-slip sleeve can prevent the traction rope on the lower side from detaching from the large pulley, small pulley and fixed pulley; when the lower traction rope is pulled downward, the anti-slip sleeve can prevent the traction rope on the upper side from detaching from the large pulley, small pulley and fixed pulley.

[0016] 4. Because the large pulley, small pulley and fixed pulley form a labor-saving pulley group, the control block can be easily slid. When the fan blades are driven to rotate by external force, the direction of the force is just opposite. At this time, the large pulley, small pulley and fixed pulley form a labor-saving pulley group that is converted into a labor-intensive pulley group, making it difficult for the fan blades to be pushed open, thereby reducing the chance of the fan blades being pushed open and reducing the fan blade pushing-open rate.

[0017] 5. Compared with the prior art, the present invention is designed such that when the angle between the inclined surface and the vertical surface is 18.43°, the component of the force in the horizontal direction will be weakened, and the force received by the fan blades trying to rotate will be smaller. Therefore, the 18.43° angle design makes the fan blades more difficult to rotate, thereby reducing the push-open rate. When the fan blades are driven to rotate by an external force, the direction of the force is just opposite. At this time, the large pulley, small pulley and fixed pulley constitute a labor-saving pulley group, which is converted into a labor-intensive pulley group, making the fan blades less likely to be pushed open, thereby reducing the chance of the fan blades being pushed open, reducing the fan blade push-open rate, and further reducing the push-open rate.

[0018] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is an axonometric view of the present invention as a whole.

[0020] FIG2 is an axonometric view of the fan blade of the present invention.

[0021] FIG3 is a second axonometric view of the fan blade of the present invention.

[0022] FIG4 is a side view 1 of the fan blade of the present invention.

[0023] FIG5 is a second side view of the fan blade of the present invention.

[0024] FIG6 is an axonometric view of the gear sleeve of the present invention.

[0025] FIG7 is an axonometric view of the directional tube of the present invention.

[0026] FIG8 is an axonometric view of the toothed belt of the present invention.

[0027] FIG9 is an axonometric view of the L-connecting block of the present invention.

[0028] FIG10 is an axonometric view of the control block of the present invention.

[0029] FIG11 is an axonometric view of the horizontal frame of the present invention.

[0030] FIG12 is an axonometric view of the transmission mechanism of the present invention.

[0031] FIG13 is an axonometric view of the anti-drop sleeve of the present invention.

[0032] FIG14 is an axonometric view of the traction rope of the present invention.

[0033] FIG15 is a second axonometric view of the traction rope of the present invention.

[0034] FIG16 is an axonometric view 3 of the traction rope of the present invention.

[0035] FIG17 is a second axonometric view of the L-connecting block of the present invention.

[0036] FIG18 is an axonometric view of the control block of the present invention.

[0037] In Figures 1 to 18, the correspondence between the component names or lines and the figure numbers is as follows: vertical frame 1, square tube 101, through groove 111, through slide groove 112, T-block 102, U-block 103, rotating rod 131, fixing rod 132, sliding groove 133, fan blade 2, rotating shaft 201, blade 202, vertical surface 221, inclined surface 222, gear sleeve 203, sleeve hole 231, connecting sleeve 204, horizontal frame 3, bottom plate 301 , reinforcing rib 302, insert block 1 303, insert block 2 304, transmission mechanism 5, toothed belt 501, L-connecting block 502, fixed shaft 521, large pulley 503, small pulley 504, fixed pulley 505, traction rope 506, fixed end 561, pulling end 562, anti-slip sleeve 507, anti-slip channel 571, tangent hole 572, wire entry groove 573, control block 508, friction block 581, T-type connecting block 582, threaded cylinder 583. DETAILED DESCRIPTION

[0038] Please refer to Figures 1 to 18;

[0039] This embodiment provides a PVC plastic wood ventilation window. Referring to FIG1 , it includes a PVC plastic wood 1, two horizontal frames 3, and a plurality of blades 2. A transmission mechanism 5 is provided inside one vertical frame 1 for driving the plurality of blades 2 to rotate synchronously. The plurality of blades 2 are rotatably connected and assembled between the two vertical frames 1. The top and bottom of the two vertical frames 1 are both assembled and connected with horizontal frames 3. The transmission mechanism 5 is used to drive the blades 2 to rotate and to reduce the probability of the plurality of blades 2 being pushed open by external force after closing.

[0040] In a specific implementation, during assembly, a plurality of fan blades 2 are first assembled between the vertical frames 1, and then the two horizontal frames 3 are assembled to the top and bottom of the two vertical frames 1. When the fan blades 2 are controlled to rotate, the transmission mechanism 5 is driven to cause the transmission mechanism to drive the plurality of fan blades 2 to rotate synchronously, so that the fan blades 2 can rotate and close. When the fan blades 2 are pushed by the wind, external force acts on the surface of the fan blades 2, pushing the fan blades 2 to rotate. The forceful lever formed by the transmission mechanism 5 makes it difficult for the fan blades 2 to be pushed open, reducing the chance of being pushed open.

[0041] The probability of being pushed away and the push rate.

[0042] Further, with reference to Figures 2 and 3, the fan blade 2 includes a rotating shaft 201, and blades 202 are provided on both sides of the middle of the rotating shaft 201. A gear sleeve 203 is sleeved on one end of the rotating shaft 201, and a connecting sleeve 204 is provided on the other end of the rotating shaft 201. The connection between the connecting sleeve 204 and the gear sleeve 203 and the rotating shaft 201 is provided with a sleeve hole 231. The sleeve hole 231 is clamped with the rotating shaft 201. The inner wall of the sleeve hole 231 is provided with a recess, and the outer walls of both ends of the rotating shaft 201 are provided with protrusions, which are clamped with the recesses. The blade 202 includes two parallel vertical surfaces 221 and two parallel inclined surfaces 222.

[0043] In a specific implementation, when the fan blade 2 is rotated, the gear sleeve 203 drives the rotating shaft 201 and the connecting sleeve 204 to rotate, so that the fan blade 2 rotates;

[0044] After the fan blades 2 are completely closed, the vertical surfaces 221 of the adjacent fan blades 2 can form a plane;

[0045] When the fan blades 2 are fully opened, the adjacent inclined surfaces 222 are turned parallel to each other to form parallel through-channels.

[0046] Further, referring to FIG4 , the angle between the inclined surface 222 and the vertical surface 221 is 18.43°, the angle between the inclined surface 222 and the vertical plane is 18.43°, and the angle between the vertical surface 221 and the horizontal plane is 90°;

[0047] In a specific implementation, when the fan blade 2 is fully closed and subjected to external force, the vertical surface 221 is always the one that is subjected to the force. When the force received by the vertical surface 221 is decomposed and transmitted to the inclined surface 222, the force perpendicular to the vertical surface 221 will always be greater than the force perpendicular to the inclined surface 222. That is, most of the force received by the upper vertical surface 221 can be transmitted to the lower vertical surface 221 to form a mutually restraining reaction force, thereby reducing the probability of the fan blade 2 being pushed open.

[0048] When the vertical surface 221 is subjected to a force, the force can be decomposed into two components: one along the normal direction of the vertical surface 221 and the other along the tangent direction of the vertical surface 221;

[0049] The force along the normal direction is mainly used to change the angle of the vertical surface 221, while the force along the tangential direction attempts to rotate the vertical surface 221;

[0050] Since the angle between the inclined surface 222 and the vertical surface 221 is 18.43°, when the vertical surface 221 is subjected to a force attempting to rotate it, the force will be transferred to the horizontal surface through the inclined surface 222;

[0051] Since the angle between the inclined surface 222 and the horizontal plane is greater than the angle between the vertical surface 221 and the horizontal plane, the horizontal component of the force will be weakened, and the force on the vertical surface that attempts to rotate will be reduced when it is transmitted to the horizontal surface;

[0052] Since the angle between the inclined surface 222 and the horizontal plane is relatively large, when the vertical surface 221 is subjected to a force attempting to rotate it, the horizontal component of this force will be further weakened;

[0053] The vertical surface 221 is subjected to a force attempting to rotate it. Due to the decomposition and transmission of the force, the force actually received by the horizontal surface attempting to rotate the fan blades is very small.

[0054] Due to the change in angle during the decomposition and transmission of force, the fan blade 2 is not easily rotated by the force exerted on the vertical surface 221;

[0055] When the angle between the inclined surface 222 and the vertical surface 221 is 18.43°, the horizontal component of the force will be weakened, and the force received by the fan blade 2 attempting to rotate will be smaller. Therefore, the 18.43° angle design makes the fan blade 2 more difficult to rotate.

[0056] 7 , the vertical frame 1 includes a square tube 101 , a through groove 111 is provided on one side of the square tube 101 , a T-shaped block 102 is assembled in the through groove 111 , a U-shaped block 103 is assembled on the inner side of the square tube 101 and located inside the T-shaped block 102 , a plurality of through holes are provided in the middle of the U-shaped block 103 and the T-shaped block 102 , the through holes are rotatably connected to the shafts of the connecting sleeve 204 and the gear sleeve 203 , the teeth of the gear sleeve 203 are located between the U-shaped block 103 and the T-shaped block 102 , the toothed belt 501 of the transmission mechanism 5 is meshed and connected to the periphery of the plurality of gear sleeves 203 , the teeth of the toothed belt 501 are located on the inner side surface meshed with the gear sleeve 203 , the inner surface of the toothed belt 501 that is not meshed with the gear sleeve 203 is not provided with teeth, and the L-connecting block 502 of the transmission mechanism 5 is fixedly connected to the outer surface of the toothed belt 501 in the area where no teeth are provided;

[0057] In specific implementation, when driving the fan blades 2 to rotate, the L connecting block 502 is slid to drive the toothed belt 501 to rotate, so that the multiple gear sleeves 203 rotate synchronously, and the multiple gear sleeves 203 synchronously drive the rotating shaft 201 to rotate, so that the fan blades 2 rotate.

[0058] Further, with reference to FIG7 , the horizontal frame 3 includes a bottom plate 301 , and a reinforcing rib 302 is provided on a surface of the bottom plate 301 on one side close to the blade 202 . The structure of the reinforcing rib 302 is the same as that of the blade 202 . Insertion blocks 303 are provided on the outer sides of both ends of the surface of the bottom plate 301 on one side close to the blade 202 . Insertion blocks 303 are inserted into the gaps between the square tube 101 and the U-shaped blocks 103 at both ends of the square tube 101 . Insertion blocks 304 are provided on the inner sides of both ends of the surface of the bottom plate 301 on one side close to the blade 202 . Insertion blocks 304 are inserted into the gaps between the U-shaped blocks 103 and the T-shaped blocks 102 at both ends of the square tube 101 .

[0059] In a specific implementation, when the horizontal frame 3 is installed, the reinforcement ribs 302 are provided to make the structural strength of the horizontal frame 3 more solid;

[0060] The structure of the reinforcing ribs 302 is the same as that of the blades 202. When the fan blades 2 are fully closed, the two reinforcing ribs 302 can further prevent the fan blades 2 from being pushed open, thereby further reducing the rate at which the fan blades 2 are pushed open by external forces.

[0061] During assembly, first put the gear sleeve 203 and the connecting sleeve 204 on both ends of the rotating shaft 201, and then make the gear sleeve 203 and the connecting sleeve 204 fit into the through hole of the T-block 102. After completing the assembly of several fan blades 2, assemble the toothed belt 501 and assemble the transmission mechanism 5 at the same time. Then insert the insertion block 1 303 into the gap between the square tube 101 and the U-block 103 at both ends of the square tube 101, and insert the insertion block 2 304 into the gap between the U-block 103 and the T-block 102 at both ends of the square tube 101 to complete the assembly.

[0062] Further, with reference to Figures 9, 10 and 12, rotating rods 131 are provided at both ends of the outer side of the U-shaped block 103, and fixed rods 132 are provided on the inner side of the rotating rod 131. A sliding groove 133 is provided at a position where the U-shaped block 103 is flush with the toothed belt 501 without a tooth area. A through-groove 112 is provided in the middle of the side of the square tube 101, and a control block 508 is provided for sliding connection inside the through-groove 112. The transmission mechanism 5 also includes three fixed shafts 521 fixedly connected to one side of the L-connecting block 502. Two large pulleys 503 are provided on the fixed shaft 521 located in the middle of the L-connecting block 502, and small pulleys 504 are provided on the fixed shafts 521 located on both sides of the L-connecting block 502. Fixed pulleys 505 are provided on the rotating rod 131. The rods 132 are all fixedly connected with a traction rope 506. The traction rope 506 on the upper side passes around the small pulley 504 on the upper side, then passes around the fixed pulley 505 on the upper side, and then passes around the large pulley 503 on the middle outside. The other end of the traction rope 506 is fixedly connected to the control block 508. The fixed rod 132 on the lower side is fixedly connected with the traction rope 506 on the lower side. The traction rope 506 on the lower side passes around the small pulley 504 on the lower side, then passes around the fixed pulley 505 on the lower side, and then passes around the large pulley 503 on the middle inside. The other end of the traction rope 506 is fixedly connected to the control block 508. The traction rope 506 includes a fixed end 561 and a pulling end 562. The fixed end 561 is fixed on the fixed rod 132, and the pulling end 562 is fixed on the control block 508.

[0063] In a specific implementation, when the transmission mechanism 5 is used to drive the fan blades 2 to rotate, when the fan blades 2 are rotated upward to be closed, the control block 508 is rotated upward, so that the traction rope 506 on the upper side moves under the traction action of the control block 508, and the large pulley 503, the small pulley 504 and the L-connecting block 502 on the upper side slide upward as a whole, and the toothed belt 501 is driven to rotate through the L-connecting block 502, so that the plurality of gear sleeves 203 are rotated, and the fan blades 2 are rotated, so that the fan blades 2 are closed after the rotation is completed;

[0064] When the fan blade 2 is opened, the control block 508 is slid downward. At this time, the control block 508 pulls the pulling end 562 of the traction rope 506 on the lower side to move downward, so that the large pulley 503, the small pulley 504 and the L connecting block 502 on the lower side slide downward as a whole. At the same time, because the pulling end 562 of the traction rope 506 on the upper side is not stressed, the traction rope 506 is relaxed, and the large pulley 503 and the small pulley 504 on the upper side will pull the traction rope 506 at the L connecting block 502. The guide rope 506 can easily slide the control block 508 because the large pulley 503, the small pulley 504 and the fixed pulley 505 form a labor-saving pulley group. When the fan blade 2 is driven to rotate by an external force, the direction of the force is just opposite. At this time, the large pulley 503, the small pulley 504 and the fixed pulley 505 form a labor-saving pulley group that is converted into a labor-intensive pulley group, making it difficult for the fan blade 2 to be pushed open, thereby reducing the chance of the fan blade 2 being pushed open and reducing the pushing-open rate of the fan blade 2.

[0065] Further, referring to Figures 7 and 18, the cross-section of the through-chute 112 is T-shaped, and the control block 508 is composed of a friction block 581, a T-shaped connecting block 582 and a threaded barrel 583. The friction block 581 is slidably connected to the inside of the through-chute 112. A T-shaped connecting block 582 is provided in the middle of the lower surface of the friction block 581. The T-shaped connecting block 582 is clamped on the inner side of the through-chute 112. Two threaded barrels 583 are provided at diagonal positions on the lower surface of the T-shaped connecting block 582. The pulling end of the traction rope 506 is integrally connected to a threaded rod made of plastic, and the threaded rod is connected to the threaded barrel 583.

[0066] In a specific implementation, the threaded rod and the threaded barrel 583 are provided so that the traction rope 506 and the control block 508 can be disassembled after being connected, making the whole easy to assemble;

[0067] The cross section of the through-channel 112 is T-shaped, so that there is only a thin gap between the through-channel 112 and the internal through-channel area.

[0068] Further, with reference to Figure 17, the two large pulleys 503 are provided with anti-slip sleeves 507, and the anti-slip sleeves 507 are provided with two anti-slip channels 571 corresponding to the traction rope 506. The anti-slip channels 571 are each provided with a tangent hole 572 and a line entry groove 573. The traction rope 506 enters from the tangent hole 572, passes through the anti-slip channel 571, and is led out from the line entry groove 573.

[0069] In a specific implementation, when the upper traction rope 506 is pulled upward, the anti-drop sleeve 507 can prevent the traction rope 506 on the lower side from being detached from the large pulley 503, the small pulley 504 and the fixed pulley 505;

[0070] When the lower traction rope 506 is pulled downward, the anti-drop sleeve 507 can prevent the upper traction rope 506 from being detached from the large pulley 503, the small pulley 504 and the fixed pulley 505.

[0071] Further, referring to FIG13 and FIG17 , the tangential hole 572 and the line entry groove 573 are arranged in parallel in the direction of entry and exit of the traction rope;

[0072] During specific implementation, when the traction rope is subjected to force, the forces at both ends of the traction rope are on a horizontal line, which can effectively prevent the anti-slip sleeve 507 from rotating.

[0073] Further, referring to FIG9 , one side of the L-shaped connecting block 502 is slidably supported on the T-shaped block 102 , and the other side of the L-shaped connecting block 502 is slidably supported on the inner wall of the sliding groove 133 ;

[0074] During specific implementation, the L-connecting block 502 can be connected to the interior of the sliding groove 133 in a limited sliding manner.

Claims

1. A PVC plastic-wood breathable window, characterized in that: It includes (1) made of PVC wood-plastic, two horizontal frames (3) and several fan blades (2). Inside a vertical frame (1), there is a transmission mechanism (5) for driving several fan blades (2) to rotate synchronously. Several fan blades (2) are rotatably connected and assembled between two vertical frames (1). At the top and bottom of the two vertical frames (1), horizontal frames (3) are assembled and connected. The transmission mechanism (5) is used to drive the fan blades (2) to rotate and to reduce the probability that several fan blades (2) are pushed open by an external force after being closed.

2. The PVC wood-plastic breathable window according to claim 1, wherein: The fan blade (2) includes a rotating shaft (201). In the middle of the rotating shaft (201), blades (202) extend upward and downward. At one end of the rotating shaft (201), a toothed sleeve (203) is sleeved. At the other end of the rotating shaft (201), there is a connecting sleeve (204). Socket holes (231) are opened at the connections between the axes of the connecting sleeve (204) and the toothed sleeve (203) and the rotating shaft (201). The socket holes (231) are clamped with the rotating shaft (201). Depressions are provided on the inner walls of the socket holes (231), and protrusions are provided on the outer walls at both ends of the rotating shaft (201). The protrusions are clamped with the depressions. The blade (202) includes two parallel vertical surfaces (221) and two parallel inclined surfaces (222).

3. The PVC plastic-wood breathable window according to claim 2, characterized in that: The included angle between the inclined surface (222) and the vertical surface (221) is 18.43°. The included angle between the inclined surface (222) and the vertical plane is 18.43°. The included angle between the vertical surface (221) and the horizontal plane is 90°.

4. The PVC wood-plastic breathable window according to claim 3, characterized in that: The vertical frame (1) includes a square tube (101). A through groove (111) is opened on one side of the square tube (101). A T-shaped block (102) is assembled in the through groove (111). Inside the square tube (101) and on the inner side of the T-shaped block (102), a U-shaped block (103) is assembled. Several through holes are opened in the middle of the U-shaped block (103) and the T-shaped block (102). The through holes are rotatably connected to the axes of the connecting sleeve (204) and the toothed sleeve (203). The teeth of the toothed sleeve (203) are located between the U-shaped block (103) and the T-shaped block (102). The toothed belt (501) of the transmission mechanism (5) is meshed and connected around several toothed sleeves (203). The teeth of the toothed belt (501) are located on the inner surface meshed with the toothed sleeve (203). There are no teeth on the inner surface of the toothed belt (501) that is not meshed with the toothed sleeve (203). The L-shaped connecting block (502) of the transmission mechanism (5) is fixedly connected to the outer surface of the area without teeth of the toothed belt (501).

5. The PVC wood-plastic breathable window according to claim 4, characterized in that: The horizontal frame (3) includes a bottom plate (301). On one side surface of the bottom plate (301) close to the blade (202), there are reinforcing ribs (302). The structure of the reinforcing ribs (302) is the same as that of the blade (202). On the outer sides of both ends of one side surface of the bottom plate (301) close to the blade (202), there are first insertion blocks (303). The first insertion blocks (303) are inserted into the gaps between the square pipes (101) and the U-shaped blocks (103) at both ends of the square pipe (101). On the inner sides of both ends of one side surface of the bottom plate (301) close to the blade (202), there are second insertion blocks (304). The second insertion blocks (304) are inserted into the gaps between the U-shaped blocks (103) and the T-shaped blocks (102) at both ends of the square pipe (101).

6. The PVC plastic-wood breathable window according to claim 5, wherein: On the outer sides of both ends of the U-shaped block (103), there are rotating rods (131). On the inner sides of the rotating rods (131), there are fixed rods (132). At the position where the U-shaped block (103) is flush with the non-toothed area of the toothed belt (501), there is a sliding groove (133). In the middle of the side surface of the square pipe (101), there is a through sliding groove (112) penetrating through the interior. A control block (508) is slidably connected inside the through sliding groove (112). The transmission mechanism (5) further includes three fixed shafts (521) fixedly connected to one side of the L-shaped connecting block (502). On the fixed shaft (521) in the middle of the L-shaped connecting block (502), there are two large pulleys (503). On the fixed shafts (521) on both sides of the L-shaped connecting block (502), there are small pulleys (504). On the rotating rods (131), there are fixed pulleys (505). On the fixed rods (132), there are traction ropes (506) fixedly connected. The upper traction rope (506) bypasses the upper small pulley (504), then bypasses the upper fixed pulley (505), and then bypasses the outer large pulley (503) in the middle. The other end of the traction rope (506) is fixedly connected to the control block (508). On the lower fixed rod (132), there is a lower traction rope (506) fixedly connected. The lower traction rope (506) bypasses the lower small pulley (504), then bypasses the lower fixed pulley (505), and then bypasses the inner large pulley (503) in the middle. The other end of the traction rope (506) is fixedly connected to the control block (508). The traction rope (506) includes a fixed end (561) and a pulling end (562). The fixed end (561) is fixed on the fixed rod (132), and the pulling end (562) is fixed on the control block (508).

7. The PVC wood-plastic breathable window according to claim 6, wherein: The cross-section of the through chute (112) is T-shaped. The control block (508) is composed of a friction block (581), a T-shaped connecting block (582) and a threaded cylinder (583). The friction block (581) is slidably connected inside the through chute (112). A T-shaped connecting block (582) is provided in the middle of the lower surface of the friction block (581). The T-shaped connecting block (582) is clamped inside the through chute (112). Two threaded cylinders (583) are provided at the diagonal positions of the lower surface of the T-shaped connecting block (582). The pulling end of the towing rope (506) is integrally connected with a threaded rod made of plastic, and the threaded rod is connected to the threaded cylinder (583).

8. The PVC plastic-wood breathable window according to claim 7, wherein: Anti-slip sleeves (507) are sleeved on the two large pulleys (503). Two anti-slip channels (571) corresponding to the towing rope (506) are provided inside the anti-slip sleeves (507). A tangent hole (572) and a wire inlet groove (573) are provided on each of the anti-slip channels (571). The towing rope (506) enters from the tangent hole (572), passes through the anti-slip channel (571) and exits from the wire inlet groove (573).

9. The PVC wood-plastic breathable window according to claim 8, wherein: The tangent hole (572) and the wire inlet groove (573) are arranged parallel to the direction of the towing rope entering and exiting.

10. The PVC wood-plastic breathable window according to claim 9, characterized in that: One side of the L-shaped connecting block (502) is slidably supported on the T-shaped block (102), and the other side of the L-shaped connecting block (502) is slidably supported on the inner wall of the sliding groove (133).

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