PVC plastic-wood ventilating window

Abstract

The application provides a PVC plastic wood ventilation window, an inside of a vertical frame is provided with a transmission mechanism for driving a plurality of leaves to rotate synchronously, the plurality of leaves are rotationally connected and assembled between two vertical frames, and horizontal frames are assembled and connected to the top and bottom of the two vertical frames; compared with the prior art, when the included angle between the inclined surface and the vertical surface is 18.43°, the horizontal component of the force is weakened, the force received by the leaves to make them rotate is smaller, therefore, the included angle of 18.43° makes the leaves more difficult to be rotated, thereby reducing the push-out rate; when the leaves are driven to rotate by external force, the direction of the force is just opposite, the large pulley, the small pulley and the fixed pulley form a force-saving pulley set and are converted into a force-consuming pulley set, so that the leaves are not easy to be pushed out, thereby reducing the probability of the leaves being pushed out and the push-out rate of the leaves, and further reducing the push-out rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shutters, louvers or grilles, in particular to a PVC plastic-wood ventilating window. BACKGROUND

[0002] The PVC plastic-wood ventilating window is a window made of PVC material and natural materials such as wood fibers. This window combines the weather resistance and ultraviolet resistance of PVC material and the natural and textured feel of wood fibers, and has good environmental performance and decorative effect. The PVC plastic-wood ventilating window usually has natural wood grain or antique texture, can be integrated with the natural environment, and at the same time provides good ventilation and lighting effect. The existing ventilating window is easy to rotate after receiving external force, which causes the leaves to be opened, and the existing ventilating window is a whole structure, which is not convenient for e-commerce transportation, so a PVC plastic-wood ventilating window is proposed. SUMMARY

[0003] To solve at least one of the above technical defects, the present application provides a PVC plastic-wood ventilating window, which comprises two horizontal frames and a plurality of leaves made of PVC plastic-wood, and a vertical frame inside which is provided with a transmission mechanism for driving the plurality of leaves to rotate synchronously, the plurality of leaves being rotatably connected and assembled between the two vertical frames, and the top and bottom of the two vertical frames being assembled and connected with the horizontal frames, the transmission mechanism being used to drive the leaves to rotate and to reduce the probability of the plurality of leaves being pushed open by external force after being closed.

[0004] Further, the leaf comprises a rotating shaft, the middle part of the rotating shaft extending upward and downward to form a blade, one end of the rotating shaft being sleeved with a gear sleeve, and the other end of the rotating shaft being provided with a connecting sleeve, the shafts of the connecting sleeve and the gear sleeve being provided with sleeve holes at the connection positions with the rotating shaft, the sleeve holes being connected with the rotating shaft, the inner wall of the sleeve hole being provided with a recess, the outer wall of the two ends of the rotating shaft being provided with a protrusion, the protrusion being connected with the recess, and the blade comprising two mutually parallel vertical faces and two mutually parallel inclined faces.

[0005] Further, the angle between the inclined face and the vertical face is 18.43°, the angle between the inclined face and the vertical plane is 18.43°, and the angle between the vertical face and the horizontal plane is 90°.

[0006] Further, the vertical frame comprises a square tube, the square tube being provided with a through slot on one side, the through slot being assembled with a T-shaped block inside, the inside of the square tube being assembled with a U-shaped block on the inner side of the T-shaped block, the middle of the U-shaped block and the T-shaped block being provided with a plurality of through holes, the through holes being rotatably connected with the shafts of the connecting sleeve and the gear sleeve, the teeth of the gear sleeve being located between the U-shaped block and the T-shaped block, the tooth belt of the transmission mechanism being meshingly connected around the plurality of gear sleeves, the teeth of the tooth belt being located on the inner side surface meshing with the gear sleeves, the inner side surface of the tooth belt not meshing with the gear sleeves being not provided with teeth, and the L-shaped connecting block of the transmission mechanism being fixedly connected to the outer side surface of the region of the tooth belt not provided with teeth.

[0007] Further, the horizontal frame includes a bottom plate, the bottom plate is provided with a reinforcing rib near one side surface of the blade, the structure of the reinforcing rib is the same as that of the blade, both outer sides of the two ends of the bottom plate near the one side surface of the blade are provided with an insertion block one, the insertion block one is inserted into the gap between the square tube and the U-shaped block at the two ends of the square tube, both inner sides of the two ends of the bottom plate near the one side surface of the blade are provided with an insertion block two, the insertion block two is inserted into the gap between the U-shaped block and the T-shaped block at the two ends of the square tube.

[0008] Further, both outer ends of the U-shaped block are provided with a rotating rod, both inner sides of the rotating rod are provided with a fixed rod, the U-shaped block is provided with a sliding groove at a position flush with the toothless area of the toothed belt, the middle of the side surface of the square tube is provided with a through sliding groove penetrating the inside, the through sliding groove is slidably connected with a control block, the transmission mechanism further includes three fixed shafts fixedly connected to one side of the L-shaped connecting block, two large pulleys are arranged on the fixed shafts located in the middle of the L-shaped connecting block, small pulleys are arranged on the fixed shafts located on both sides of the L-shaped connecting block, the rotating rods are provided with fixed pulleys, the fixed rods are fixedly connected with traction ropes, the traction ropes located on the upper side pass through the small pulleys on the upper side, then pass through the fixed pulleys on the upper side, and then pass through the large pulleys on the outer middle side, the other end of the traction rope is fixedly connected to the control block, the fixed rods located on the lower side are fixedly connected with the traction ropes located on the lower side, the traction ropes located on the lower side pass through the small pulleys on the lower side, then pass through the fixed pulleys on the lower side, and then pass through the large pulleys on the inner middle side, 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 to the fixed rod, and the pulling end is fixed to the control block.

[0009] Further, the cross section of the through sliding groove is in T shape, the control block is composed of a friction block, a T-shaped connecting block and a threaded cylinder, the friction block is slidably connected in the inside of the through sliding groove, the middle of the lower surface of the friction block is provided with the T-shaped connecting block, the T-shaped connecting block is clamped in the inside of the through sliding groove, two threaded cylinders are arranged at the diagonal positions of the lower surface of the T-shaped connecting block, the pulling end of the traction rope is integrally connected with a plastic threaded rod, and the threaded rod is connected with the threaded cylinder.

[0010] Further, the two large pulleys are provided with anti-disengagement sleeves, the anti-disengagement sleeves are provided with two anti-disengagement channels corresponding to the traction ropes, the anti-disengagement channels are provided with a tangent hole and a wire inlet groove, the traction ropes enter from the tangent holes and are led out from the wire inlet grooves.

[0011] Further, the directions of the traction ropes entering and leading out of the tangent holes and the wire inlet grooves are parallel.

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

[0013] Advantages:

[0014] 1、In the process of assembly, a plurality of leaves are assembled between the vertical frames, two horizontal frames are assembled to the top and bottom of the two vertical frames, and when the rotation of the leaves is controlled, the transmission mechanism is driven to drive the plurality of leaves to rotate synchronously, so that the leaves can rotate and close, and when the leaves are pushed by the wind, external force acts on the surface of the leaves to push the leaves to rotate, and the force lever formed by the transmission mechanism makes the leaves not easy to be pushed away, thereby reducing the probability of being pushed away.

[0015] 2、When the included angle between the inclined surface and the vertical surface is 18.43°, the horizontal component of the force is weakened, and the force received by the leaves to rotate is smaller, so that the design of the included angle of 18.43° makes the leaves more difficult to be rotated.

[0016] 3、When the upper traction rope is pulled upwards, the setting of the anti-escape sleeve can avoid the lower traction rope from being separated on the large pulley, the small pulley and the fixed pulley; when the lower traction rope is pulled downwards, the setting of the anti-escape sleeve can avoid the upper traction rope from being separated on the large pulley, the small pulley and the fixed pulley.

[0017] 4、The large pulley, the small pulley and the fixed pulley constitute a labor-saving pulley block, and the control block can be easily slid, when the leaves are driven to rotate by external force, the direction of the force is just opposite, the large pulley, the small pulley and the fixed pulley constitute a labor-saving pulley block and are converted into a labor-consuming pulley block, so that the leaves are not easy to be pushed away, thereby reducing the probability of being pushed away and the push-away rate of the leaves.

[0018] 5、Compared with the prior art, when the included angle between the inclined surface and the vertical surface is 18.43°, the horizontal component of the force is weakened, and the force received by the leaves to rotate is smaller, so that the design of the included angle of 18.43° makes the leaves more difficult to be rotated, thereby reducing the push-away rate, when the leaves are driven to rotate by external force, the direction of the force is just opposite, the large pulley, the small pulley and the fixed pulley constitute a labor-saving pulley block and are converted into a labor-consuming pulley block, so that the leaves are not easy to be pushed away, thereby reducing the probability of being pushed away and the push-away rate of the leaves, and further reducing the push-away rate.

[0019] The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0020] Figure 1 It is an isometric view of the whole application.

[0021] Figure 2 It is an isometric view of the leaf of the application. Figure 1 .

[0022] Figure 3Axonometric view of a fan blade of the present invention Figure 2 .

[0023] Figure 4 Side view of a fan blade of the present invention Figure 1 .

[0024] Figure 2 Side view of a fan blade of the present invention Figure 6 .

[0025] Figure 7 Axonometric view of a toothed sleeve of the present invention.

[0026] Figure 8 Axonometric view of a direction tube of the present invention.

[0027] Figure 9 Axonometric view of a toothed belt of the present invention.

[0028] Figure 10 Axonometric view of an L-connection block of the present invention.

[0029] Figure 11 Axonometric view of a control block of the present invention.

[0030] Figure 12 Axonometric view of a horizontal frame of the present invention.

[0031] Figure 13 Axonometric view of a transmission mechanism of the present invention.

[0032] Figure 14 Axonometric view of an anti-escape sleeve of the present invention.

[0033] Figure 1 Axonometric view of a traction rope of the present invention Figure 15 .

[0034] Figure 2 Axonometric view of a traction rope of the present invention Figure 16 .

[0035] Figure 3 Axonometric view of a traction rope of the present invention Figure 17 .

[0036] Figure 2 Axonometric view of an L-connection block of the present invention. Figure 18 .

[0037] Figures 1 to 18 Axonometric view of a control block of the present invention.

[0038] In Figures 1 to 18, the correspondence between the component names or lines and the drawing numbers is as follows: vertical frame 1, square tube 101, through slot 111, through sliding slot 112, T-shaped block 102, U-shaped block 103, rotating rod 131, fixed rod 132, sliding slot 133, fan blade 2, rotating shaft 201, blade 202, vertical surface 221, inclined surface 222, tooth sleeve 203, sleeve joint hole 231, connecting sleeve 204, horizontal frame 3, bottom plate 301, reinforcing rib 302, insertion block one 303, insertion block two 304, transmission mechanism 5, toothed belt 501, L-shaped 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-disengagement sleeve 507, anti-disengagement channel 571, tangent hole 572, wire entry slot 573, control block 508, friction block 581, T-shaped connecting block 582, threaded cylinder 583. DETAILED DESCRIPTION

[0039] Please refer to Figure 1 ;

[0040] The embodiment provides a PVC plastic wood breathable window, referring to Figure 2 , comprising 1, two horizontal frames 3 and a plurality of fan blades 2 made of PVC plastic wood, the inside of a vertical frame 1 is provided with a transmission mechanism 5 for driving the plurality of fan blades 2 to rotate synchronously, the plurality of fan blades 2 are rotatably connected and assembled between the two vertical frames 1, the top and bottom of the two vertical frames 1 are assembled and connected with the horizontal frames 3, and the transmission mechanism 5 is used for driving the fan blades 2 to rotate and reducing the probability that the plurality of fan blades 2 are pushed away by external force after being closed;

[0041] In the specific implementation, when assembling, the plurality of fan blades 2 are assembled between the vertical frames 1, 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 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, the external force acts on the surface of the fan blades 2, the fan blades 2 are pushed to rotate, the effort lever formed by the transmission mechanism 5 makes the fan blades 2 not easy to be pushed away, and the probability of being pushed away is reduced;

[0042] The probability of being pushed away is the push-away rate.

[0043] Further, referring to Figure 3 and Figure 4The fan blade 2 includes a rotating shaft 201, and blades 202 are extended from the middle of the rotating shaft 201 to the upper and lower sides. A gear sleeve 203 is sleeved on one end of the rotating shaft 201, and a connecting sleeve 204 is provided at 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.

[0044] 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;

[0045] After the fan blades 2 are completely closed, the vertical surfaces 221 of the adjacent fan blades 2 can form a plane;

[0046] When the fan blades 2 are fully opened, the adjacent inclined surfaces 222 are turned parallel to each other to form parallel through-channels.

[0047] For further reference, Figure 7 , 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°;

[0048] 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.

[0049] 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;

[0050] 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;

[0051] 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;

[0052] Because the angle between the inclined surface 222 and the horizontal plane is larger than the angle between the vertical surface 221 and the horizontal plane, the horizontal component of the force will be weakened, and the force trying to make the vertical surface 221 rotate will be reduced when it is transmitted to the horizontal surface;

[0053] Because the angle between the inclined surface 222 and the horizontal plane is larger, when the vertical surface 221 is subjected to a force trying to make it rotate, the horizontal component of the force will be further weakened;

[0054] When the vertical surface 221 is subjected to a force trying to make it rotate, due to the decomposition and transmission of the force, the horizontal surface actually receives very little force trying to make the fan blade rotate;

[0055] Due to the change of the angle during the decomposition and transmission of the force, the fan blade 2 is not easy to rotate due to the force received by the vertical surface 221;

[0056] 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 fan blade 2 receives even smaller force trying to make it rotate, so the design of the 18.43° angle makes the fan blade 2 more difficult to rotate.

[0057] Further, referring to Figure 7 The vertical frame 1 comprises a square tube 101, one side of the square tube 101 is provided with a through slot 111, a T-shaped block 102 is assembled in the through slot 111, a U-shaped block 103 is assembled inside the square tube 101 and located inside the T-shaped block 102, a plurality of through holes are formed in the middle of the U-shaped block 103 and the T-shaped block 102, the through holes are rotationally connected with the shaft of the connecting sleeve 204 and the tooth sleeve 203, the teeth of the tooth sleeve 203 are located between the U-shaped block 103 and the T-shaped block 102, the tooth belt 501 of the transmission mechanism 5 is engagedly connected on the periphery of the plurality of tooth sleeves 203, the teeth of the tooth belt 501 are located on the inner side surface engaged with the tooth sleeve 203, the inner side surface of the tooth belt 501 not engaged with the tooth sleeve 203 is not provided with teeth, and the L-shaped connecting block 502 of the transmission mechanism 5 is fixedly connected to the outer side surface of the tooth belt 501 not provided with teeth;

[0058] In specific implementation, when the fan blade 2 is driven to rotate, the L-shaped connecting block 502 is slid to drive the tooth belt 501 to rotate, so that the plurality of tooth sleeves 203 are synchronously rotated, and the plurality of tooth sleeves 203 synchronously drive the rotating shaft 201 to rotate, so that the fan blade 2 rotates.

[0059] Further, referring to Figure 9The horizontal frame 3 comprises a bottom plate 301, and the bottom plate 301 is provided with a reinforcing rib 302 close to one side surface of the blade 202, the reinforcing rib 302 has the same structure as the blade 202, both ends of the bottom plate 301 close to the one side surface of the blade 202 are provided with an insertion block one 303, the insertion block one 303 is inserted into the gap between the square tube 101 and the U-shaped block 103 at both ends of the square tube 101, both ends of the bottom plate 301 close to the one side surface of the blade 202 are provided with an insertion block two 304, the insertion block two 304 is inserted into the gap between the U-shaped block 103 and the T-shaped block 102 at both ends of the square tube 101;

[0060] In the specific implementation, when the horizontal frame 3 is installed, the reinforcing rib 302 is arranged, so that the structural strength of the horizontal frame 3 is more firm;

[0061] The reinforcing rib 302 has the same structure as the blade 202, when the fan blade 2 is completely closed, the two reinforcing ribs 302 can further prevent the fan blade 2 from being pushed open, so as to further reduce the opening rate of the fan blade 2 being pushed open by external force;

[0062] When assembling, the tooth sleeve 203 and the connecting sleeve 204 are sleeved on both ends of the rotating shaft 201, then the tooth sleeve 203 and the connecting sleeve 204 are sleeved with the through hole of the T-shaped block 102, after the assembly of the plurality of fan blades 2 is completed, the tooth belt 501 is assembled, and the transmission mechanism 5 is assembled, then the insertion block one 303 is inserted into the gap between the square tube 101 and the U-shaped block 103 at both ends of the square tube 101, and the insertion block two 304 is inserted into the gap between the U-shaped block 103 and the T-shaped block 102 at both ends of the square tube 101, and the assembly is completed.

[0063] Further, referring to Figure 10 , Figure 12 Figure 7The outer two ends of the U-shaped block 103 are provided with rotating rods 131, the inner sides of the rotating rods 131 are provided with fixed rods 132, the U-shaped block 103 is provided with a sliding groove 133 at a position flush with a non-toothed area of the toothed belt 501, the middle of the side surface of the square tube 101 is provided with a penetrating sliding groove 112 penetrating the interior, the penetrating sliding groove 112 is slidably connected with a control block 508, the transmission mechanism 5 further includes three fixed shafts 521 fixedly connected to one side of the L-shaped connecting block 502, two large pulleys 503 are arranged on the fixed shaft 521 located in the middle of the L-shaped connecting block 502, a small pulley 504 is arranged on each of the fixed shafts 521 located on the two sides of the L-shaped connecting block 502, a fixed pulley 505 is arranged on each of the rotating rods 131, a traction rope 506 is fixedly connected to each of the fixed rods 132, the traction rope 506 located on the upper side passes over the small pulley 504 on the upper side, then passes over the fixed pulley 505 on the upper side, and then passes over the large pulley 503 on the outer middle side, the other end of the traction rope 506 is fixedly connected to the control block 508, the traction rope 506 located on the lower side is fixedly connected to the fixed rod 132 on the lower side, and the traction rope 506 located on the lower side passes over the small pulley 504 on the lower side, then passes over the fixed pulley 505 on the lower side, and then passes over the large pulley 503 on the inner middle side, the other end of the traction rope 506 is fixedly connected to the control block 508, and the traction rope 506 includes a fixed end 561 and a pulling end 562, the fixed end 561 is fixed to the fixed rod 132, and the pulling end 562 is fixed to the control block 508.

[0064] In specific implementation, when the fan blade 2 is driven to rotate by the transmission mechanism 5, when the fan blade 2 is rotated upwards to be closed, the control block 508 is rotated upwards, the traction rope 506 located on the upper side moves under the traction of the control block 508, the large pulley 503 and the small pulley 504 located on the upper side slide upwards together with the L-shaped connecting block 502, the toothed belt 501 is driven to rotate by the L-shaped connecting block 502, the plurality of toothed sleeves 203 are driven to rotate, the fan blade 2 is driven to rotate, and the fan blade 2 is closed after completing the rotation.

[0065] 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 lower traction rope 506 to move downward, so that the lower large pulley 503, the small pulley 504 and the L connecting block 502 slide downward as a whole, at the same time, the pulling end 562 of the upper traction rope 506 is not stressed, at this time the traction rope 506 is relaxed, the large pulley 503, the small pulley 504 and the fixed pulley 505 on the L connecting block 502 pull the traction rope 506, because the large pulley 503, the small pulley 504 and the fixed pulley 505 constitute a labor-saving pulley block, the control block 508 can be easily slid, when the fan blade 2 is driven to rotate by an external force, the direction of the force is just the opposite, at this time the large pulley 503, the small pulley 504 and the fixed pulley 505 constitute a labor-saving pulley block, which is converted into a labor-consuming pulley block, so that the fan blade 2 is not easy to be pushed open, thereby reducing the probability of the fan blade 2 being pushed open and reducing the opening rate of the fan blade 2.

[0066] Further, referring to Figure 18 and Figure 17 , the cross section of the through sliding groove 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 in the inside of the through sliding groove 112, the lower surface of the friction block 581 is provided with the T-shaped connecting block 582, the T-shaped connecting block 582 is clamped in the inside of the through sliding groove 112, the lower surface of the T-shaped connecting block 582 is provided with two threaded cylinders 583 at the diagonal positions, the pulling end of the traction rope 506 is integrally connected with a plastic threaded rod, and the threaded rod is connected with the threaded cylinder 583;

[0067] In specific implementation, the setting of the threaded rod and the threaded cylinder 583 enables the traction rope 506 and the control block 508 to be connected and then disassembled, so that the whole is convenient to assemble;

[0068] The cross section of the through sliding groove 112 is T-shaped, so that the through sliding groove 112 and the internally penetrated area only have a thin gap.

[0069] Further, referring to Figure 13 , the two large pulleys 503 are provided with anti-disengagement sleeves 507, the anti-disengagement sleeves 507 are provided with two anti-disengagement channels 571 corresponding to the traction ropes 506, the anti-disengagement channels 571 are each provided with a tangent hole 572 and a wire inlet slot 573, the traction ropes 506 enter from the tangent holes 572 and are led out from the wire inlet slots 573 through the anti-disengagement channels 571;

[0070] In specific implementation, when the upper traction rope 506 is pulled upward, the setting of the anti-disengagement sleeves 507 can avoid the lower traction rope 506 from disengaging on the large pulley 503, the small pulley 504 and the fixed pulley 505;

[0071] When pulling down the lower traction rope 506, the upper traction rope 506 can be prevented from being disengaged from the large pulley 503, the small pulley 504 and the fixed pulley 505 by the setting of the anti-disengagement sleeve 507.

[0072] Further, referring to Figure 17 and Figure 9 , the tangent hole 572 is parallel to the entering and exiting traction rope direction of the wire entry slot 573;

[0073] In specific implementation, when the traction rope is under stress, the stress on both ends of the traction rope is on the horizontal line, which can effectively prevent the anti-disengagement sleeve 507 from rotating.

[0074] Further, referring to ​ , one side of the L connecting block 502 is slidingly supported on the T-shaped block 102, and the other side of the L connecting block 502 is slidingly supported on the inner wall of the sliding groove 133;

[0075] In specific implementation, the L connecting block 502 can be limitingly and slidingly connected inside the sliding groove 133.

Claims

1. A PVC plastic wood ventilation window, characterized by: The invention comprises a vertical frame (1) made of PVC plastic wood, two horizontal frames (3) and a plurality of fan blades (2), wherein a transmission mechanism (5) is provided inside one vertical frame (1) for driving the plurality of fan blades (2) to rotate synchronously, the plurality of fan blades (2) are rotationally connected and assembled between the two vertical frames (1), the tops and bottoms of the two vertical frames (1) are both assembled and connected with horizontal frames (3), and the transmission mechanism (5) is used to drive the fan blades (2) to rotate and to reduce the probability of the plurality of fan blades (2) being pushed open by external force after closing; 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). A sleeve hole (231) is provided at the connection between the connecting sleeve (204) and the gear sleeve (203) and the rotating shaft (201). The sleeve hole (231) is clamped with the rotating shaft (201), and a recess is provided on the inner wall of the sleeve hole (231). The outer walls of both ends of the rotating shaft (201) are provided with protrusions, and the protrusions are clamped with the recesses. The blade (202) includes two mutually parallel vertical surfaces (221) and two mutually parallel inclined surfaces (222). 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 inside 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), and the through holes are rotatably connected to the shafts of the connecting sleeve (204) and the gear 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 to the periphery of the plurality of toothed sleeves (203); the teeth of the toothed belt (501) are located on the inner surface meshed with the toothed sleeve (203); the inner surface of the toothed belt (501) not meshed with the toothed 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) where no teeth are provided; The horizontal frame (3) includes a bottom plate (301). A reinforcing rib (302) is provided on a surface of one side of the bottom plate (301) 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) 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) 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).

2. The PVC plastic-wood ventilation window according to claim 1, 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°, and the included angle between the vertical surface (221) and the horizontal plane is 90°.

3. The PVC plastic-wood ventilation window according to claim 1, characterized in that: The U-shaped block (103) is provided with a rotating rod (131) at both ends of the outer side, and a fixed rod (132) is provided on the inner side of the rotating rod (131). A sliding groove (133) is provided at a position flush with the toothed belt (501) without a tooth area of ​​the U-shaped block (103). A through-slot (112) is provided in the middle of the side of the square tube (101). A control block (508) is provided in a sliding connection inside the through-slot (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). 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). A traction rope (506) is fixedly connected. 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 outer side. The other end of the traction rope (506) is fixedly connected to the control block (508). The traction rope (506) on the lower side is fixedly connected to the fixed rod (132) 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 inner side. 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 to the fixed rod (132), and the pulling end (562) is fixed to the control block (508).

4. The PVC plastic-wood ventilation window according to claim 3, characterized in that: 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 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).

5. The PVC plastic-wood ventilation window according to claim 4, characterized in that: The two large pulleys (503) are provided with an anti-slip sleeve (507), and the anti-slip sleeve (507) is 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 wire 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 wire entry groove (573).

6. The PVC plastic-wood ventilation window according to claim 5, characterized in that: The tangent hole (572) and the direction of entry and exit of the traction rope of the wire entry groove (573) are arranged in parallel.

7. The PVC plastic-wood ventilation window according to claim 6, 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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