A guide wheel structure and a door and window assembly

Abstract

The present invention discloses a guide wheel structure and a door and window assembly. The guide wheel structure includes a bracket, a transmission strip, and two or more pulley guide assemblies. The left and right sides of the bracket along the transmission direction are divided into a first side and a second side; the pulley guide assembly includes a pulley and a guide assembly. The guide assemblies are respectively in transmission connection with the pulley and the transmission strip, so that when the transmission strip moves, the pulley obtains a displacement amount perpendicular to the transmission direction; adjacent pulleys respectively protrude from the first side and the second side, and the distance between adjacent pulleys remains unchanged during the displacement process, so that the indentation amount of one pulley relative to the first side is equal to the protrusion amount of the other pulley relative to the second side. The guide wheel structure of the present invention can enable the pulley to obtain a displacement amount perpendicular to the transmission direction when the transmission strip moves, so that the door and window sash moves horizontally relative to the door and window frame to squeeze or loosen the rubber strip between the two, which not only has the advantages of a sliding door and window, but also has strong sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of doors and windows, and particularly to a guide wheel structure and a door and window assembly. Background Art

[0002] Sliding windows are widely used due to their large window width, large glass area, wide view, high daylighting rate, beautiful appearance, flexible use, safety and reliability, long service life, opening in one plane, less space occupied, and convenient installation of window screens. However, for cold regions, since the main seal of ordinary sliding windows is a brush, the sealing performance of sliding windows is relatively poor compared with the rubber strip seal of casement windows. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a guide wheel structure and a door and window assembly so that the door and window can be separated from the rubber strip during pushing and pulling, and the door and window can be fitted with the rubber strip for sealing when closed.

[0004] In a first aspect, an embodiment of the present invention provides a guide wheel structure, including a bracket, a transmission strip, and two or more pulley guiding assemblies. The bracket is used to connect with a door and window sash. The left and right sides of the bracket along the transmission direction are divided into a first side and a second side. The transmission strip is slidably arranged on the bracket along the transmission direction, and the transmission strip is used to be in transmission connection with the handle of the door and window sash. The pulley guiding assembly is arranged on the bracket through a chute structure, including a pulley and a guiding assembly. The guiding assembly is in transmission connection with the pulley and the transmission strip respectively, so that when the transmission strip moves, the pulley obtains a displacement amount perpendicular to the transmission direction. Adjacent pulleys protrude from the first side and the second side respectively, and the distance between adjacent pulleys remains unchanged during the displacement process, so that the indentation amount of one pulley relative to the first side is equal to the protrusion amount of the other pulley relative to the second side.

[0005] A further technical solution of it is that the number of the pulley guiding assemblies is two.

[0006] A further technical solution of it is that the guiding assembly includes a push plate, a first guiding column, and a second guiding column. The transmission strip is in transmission connection with one end of the push plate and the bracket through the first guiding column, so that the first guiding column displaces along the moving direction of the transmission strip. The other end of the push plate is connected with the pulley and the bracket through the second guiding column, so that the second guiding column displaces along the direction transverse to the moving direction of the transmission strip.

[0007] A further technical solution of it is that one end of the first guiding column is connected with the transmission strip, the first guiding column passes through one end of the push plate and then is slidably connected with the bracket, one end of the second guiding column is connected with the other end of the push plate, and the other end of the second guiding column passes through the bracket and then is connected with the pulley, so that the pulley is slidably connected above the bracket.

[0008] Its further technical solution is: The chute structure includes a first guiding groove and a second guiding groove respectively for the first guiding column and the second guiding column to slide through. The first guiding groove is arranged along the moving direction of the transmission bar, and the second guiding groove is arranged at an angle to the first guiding groove.

[0009] Its further technical solution is: A bushing is sleeved outside the second guiding column to be connected with the pulley.

[0010] Its further technical solution is: The other end of the second guiding column passes through the bushing and the pulley and is connected with a gasket, so that the pulley is installed on the second guiding column in a rotatable and vertically limited way.

[0011] Its further technical solution is: The transmission bar is connected with the bracket through a fixed shaft, and an adjusting groove for avoiding the fixed shaft is arranged along the length direction on the transmission bar.

[0012] Its further technical solution is: A connecting column for driving connection with the handle is arranged at the end of the transmission bar.

[0013] Its further technical solution is: The bracket includes two relatively parallel and spaced-apart upper and lower bracket plates, and the two bracket plates are supported and connected by support columns, so that a gap space for arranging the guiding assembly is formed between the two bracket plates.

[0014] In a second aspect, the embodiment of the present invention further provides a door and window assembly, including a door and window sash, a door and window frame and the above-mentioned guiding wheel structure. The bracket is arranged on the door and window sash, the transmission bar is slidably arranged on the groove of the door and window sash, the pulley is slidably connected with the guiding groove of the door and window frame, and a rubber strip is arranged on the door and window frame facing the door and window sash.

[0015] The beneficial technical effects of the present invention are as follows: In the guide wheel structure of the present invention, a transmission bar and two or more pulley guide assemblies are arranged on the bracket connected to the door or window sash. The transmission bar is slidably arranged on the bracket and is in transmission connection with the handle of the door or window sash. The transmission bar is in transmission connection with the bracket through the pulley guide assembly, so as to drive the pulley guide assembly to move by driving the transmission bar. The pulley guide assembly includes a pulley and a guide assembly respectively in transmission connection with the pulley and the transmission bar, so that when the transmission bar moves, it drives the pulley to displace transversely to the moving direction of the transmission bar, thereby driving the bracket and the transmission bar to move transversely, and enabling the door or window sash connected to the bracket to move transversely relative to the door or window frame. The door or window sash can squeeze or loosen the rubber strip between the door or window frame and the door or window sash, so as to squeeze the rubber strip to improve the sealing performance when closing the door or window, and loosen the rubber strip to cooperate with the pulley for pushing and pulling the door or window when opening the door or window. While maintaining the advantages of a sliding door or window, it also has good sealing performance. Moreover, two or more pulley guide assemblies ensure that the distance between adjacent pulleys remains unchanged during displacement, that is, the indentation amount of one pulley relative to the first side is equal to the protrusion amount of the other pulley relative to the second side, so that the door or window sash can still maintain a stable state during movement and is not prone to shaking. The door or window assembly of the present invention also has the above functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the guide wheel structure provided by an embodiment of the present invention;

[0018] Figure 2 It is an exploded structural diagram of the guide wheel structure provided by an embodiment of the present invention;

[0019] Figure 3 It is a front view of the guide wheel structure provided by an embodiment of the present invention;

[0020] Figure 4 For Figure 3 It is a cross-sectional view of the guide wheel structure shown along line A-A;

[0021] Figure 5 It is a schematic bottom view of the guide wheel structure provided by an embodiment of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the support plate of the guide wheel structure provided by an embodiment of the present invention;

[0023] Figure 7Schematic diagram of the pulley guiding assembly of the guiding wheel structure provided by the embodiment of the present invention;

[0024] Figure 8 Exploded schematic diagram of the pulley guiding assembly of the guiding wheel structure provided by the embodiment of the present invention;

[0025] Figure 9 Assembly schematic diagram of the pulley guiding assembly of the guiding wheel structure and the transmission bar provided by the embodiment of the present invention;

[0026] Figure 10 Schematic diagram of the working principle of the guiding wheel structure provided by the embodiment of the present invention;

[0027] Figure 11 Schematic diagram of the guiding wheel structure provided by the embodiment of the present invention in a specific application and in an open state;

[0028] Figure 12 Schematic diagram of the guiding wheel structure provided by the embodiment of the present invention in a specific application and in a closed state;

[0029] Figure 13 Schematic diagram of the door and window assembly provided by the embodiment of the present invention with the door and window frame omitted;

[0030] Figure 14 Schematic diagram of the working principle of the door and window assembly provided by the embodiment of the present invention.

[0031] Explanation of the labels in the figure: 10, guiding wheel structure; 11, transmission bar; 111, connecting column; 1101, avoiding groove position; 1102, adjusting groove; 1103, positioning hole; 12, bracket; 121, bracket plate; 1211, first guiding groove; 1212, second guiding groove; 1213, fixing hole; 122, supporting column; 1201, hole position; 13, pulley guiding assembly; 130, guiding assembly; 131, pulley; 132, push plate; 133, first guiding column; 134, second guiding column; 14, bushing; 15, gasket; 101, fixing screw; 102, fixing shaft; 20, door and window assembly; 21, door and window sash; 22, door and window frame; 221, guiding groove; 23, handle; 24, transmission rod; 201, rubber strip. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations.

[0034] It should also be understood that the terminology used in this specification of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification of the present invention and the appended claims, unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0035] It should be further understood that the term "and / or" used in this specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0036] Please refer to Figures 1 to 12 as shown Figure 1 which is a schematic structural diagram of the guide wheel structure provided by an embodiment of the present invention. The guide wheel structure 10 includes a bracket 12, a transmission bar 11 and two pulley guide assemblies 13. The bracket 12 is used to connect with a window and door sash 21. The left and right sides of the bracket 12 along the transmission direction are divided into a first side and a second side. The transmission bar 11 is slidably arranged on the bracket 12 along the transmission direction. One end of the transmission bar 11 is used for driving connection with a handle 23 of the window and door sash 21. The pulley guide assembly 13 is arranged on the bracket 12 through a chute structure and includes a pulley 131 and a guide assembly 130. The guide assembly 130 is respectively in driving connection with the pulley 131 and the transmission bar 11, so that when the transmission bar 11 moves, the pulley 131 is driven to obtain a displacement amount perpendicular to the transmission direction. Adjacent pulley guide assemblies 13 respectively protrude from the first side and the second side. The distance between adjacent pulleys 131 remains unchanged during the displacement process, so that the indentation amount of one pulley 131 relative to the first side is equal to the protrusion amount of the other pulley 131 relative to the second side.

[0037] Among them, the first side can represent the left side of the bracket, and the second side can represent the right side of the bracket. A sealing rubber strip 201 is provided between the door and window frame 22 and the door and window sash 21. A handle 23 is provided on the door and window sash 21. The handle 23 can be drivingly connected to the driving strip 11 through a transmission rod 24. By rotating the handle 23, the transmission rod 24 can be driven to move, so that the driving strip 11 moves, so that the driving strip 11 drives the sliding guide assembly 13 to move. Both ends of the guide wheel structure 10 are installed on the door and window sash 21 through fixing screws 101. A hole 1201 for the fixing screw 101 to pass through can be provided on the bracket 12. An avoidance groove 1101 for the tail of the fixing screw 101 to slide through is provided along the length direction of the driving strip 11. Of course, in some embodiments, the number of the pulley guide assemblies 13 can be more than two. By providing the driving strip 11 and two or more pulley guide assemblies on the bracket 12 connected to the door and window sash 21, the driving strip 11 is slidably arranged on the bracket 12 and is drivingly connected to the handle 23 of the door and window sash 21. The driving strip 11 is drivingly connected to the bracket 12 through the pulley guide assembly 13, so as to drive the pulley guide assembly 13 to move by driving the driving strip 11. The pulley guide assembly 13 includes a pulley 131 and a guide assembly 130 respectively drivingly connected to the pulley 131 and the driving strip 11, so that when the driving strip 11 moves, the pulley 131 is driven to displace transversely to the moving direction of the driving strip 11, so as to drive the bracket 12 and the driving strip 11 to move transversely, so that the door and window sash 21 connected to the bracket 12 moves transversely relative to the door and window frame 22. The door and window sash 21 can squeeze or loosen the rubber strip 201 between the door and window frame 22 and the door and window sash 21. Therefore, when closing the door and window, the rubber strip 201 is squeezed to improve the sealing performance, and when opening the door and window, the rubber strip 201 is loosened to cooperate with the pulley 131 for pushing and pulling the door and window. While maintaining the advantages of the sliding door and window, it has good sealing performance. Moreover, two or more pulley guide assemblies 13 make the distance between adjacent pulleys 131 remain unchanged during the displacement process, that is, the increased translation amount of one pulley 131 is equal to the decreased translation amount of the other pulley 131, so that the translation amount between the two pulley guide assemblies 13 can be self-compensated, so that the door and window sash 21 can still maintain a stable state during the movement process and is not easy to shake, making the movement of the door and window sash 21 smoother and more reliable.

[0038] Specifically, the number of the pulley guide assemblies 13 is two.

[0039] Specifically, in this embodiment, the guide assembly 130 includes a push plate 132, a first guide column 133 and a second guide column 134. The transmission bar 11 is transmission-connected to one end of the push plate 132 and the bracket 12 through the first guide column 133, so that the first guide column 133 is displaced along the moving direction of the transmission bar 11; the other end of the push plate 132 is connected to the pulley 131 and the bracket 12 through the second guide column 134, so that the second guide column 134 is displaced along the moving direction transverse to the transmission bar 11. The pulley 131 is disposed above the bracket 12, and is used for sliding connection with the guide groove 221 of the door and window frame 22. The transmission bar 11 is connected to the push plate 132 and the bracket 12 through the first guide column 133 of the guide assembly 130, so that the first guide column 133 is driven by the transmission bar 11 to push the push plate 132 to move, and the push plate 132 drives the second guide column 134 to move in a direction transverse to the movement direction of the transmission bar 11, so as to drive the bracket 12 and the transmission bar 11 to move laterally with the second guide column 134, so that the door and window sash 21 connected to the bracket 12 moves laterally relative to the door and window frame 22, so that the door and window sash 21 can squeeze or loosen the rubber strip 201 between the door and window frame 22 and the door and window sash 21.

[0040] Specifically, in this embodiment, one end of the first guide column 133 is connected to the transmission bar 11, and the first guide column 133 passes through one end of the push plate 132 and is slidably connected to the bracket 12. One end of the second guide column 134 is connected to the other end of the push plate 132, and the other end of the second guide column 134 passes through the bracket 12 and is connected to the pulley 131, so that the pulley 131 is slidably connected to the top of the bracket 12.

[0041] Specifically, the chute structure includes a first guide groove 1211 and a second guide groove 1212 for the first guide post 133 and the second guide post 134 to slide through respectively. The first guide groove 1211 is arranged along the moving direction of the transmission bar 11, and the second guide groove 1212 is arranged at an angle with the first guide groove 1211 and is inclined on the bracket 12, so that the second guide post 134 slides along the second guide groove 1212 and can be displaced transversely to the moving direction of the transmission bar 11. One end of the first guide post 133 passes through the positioning hole 1103 on the transmission bar 11 to be connected with the transmission bar 11, and the other end of the first guide post 133 passes through one end of the push plate 132 and then is placed in the first guide groove 1211 to slide along the first guide groove 1211, thereby driving the push plate 132 and the bracket 12 to move. The other end of the second guide post 134 passes through the other end of the push plate 132 and then is placed in the second guide groove 1212 to slide along the second guide groove 1212. Thus, the second guide post 134 moves according to the movement of the push plate 132. Also, the end of the pulley 131 can be relatively fixed transversely with the inner wall of the door and window frame 22, so that the second guide post 134 drives the bracket 12 and the transmission bar 11 connected to the bracket 12 to move transversely, realizing the transverse movement of the door and window sash 21 relative to the door and window frame 22, and the door and window sash 21 can squeeze or loosen the rubber strip 201 between the door and window frame 22 and the door and window sash 21.

[0042] Specifically, the transmission bar 11 and the bracket 12 are connected by a fixed shaft 102. An adjustment groove 1102 for avoiding the fixed shaft 102 is arranged along the length direction on the transmission bar 11. The end of the fixed shaft 102 passes through the adjustment groove 1102 from below the transmission bar 11 and then is connected with the bracket 12. A fixing hole 1213 for fixedly connecting the end of the fixed shaft 102 is arranged on the bracket 12.

[0043] Specifically, in this embodiment, a connecting column 111 for driving connection with the handle 23 is arranged at the end of the transmission bar 11. Among them, the handle 23 is drivingly connected with the connecting column 111 through a transmission rod 24, so that rotating the handle 23 can drive the transmission rod 24 to move and drive the connecting column 111 to drive the transmission bar 11 to displace transversely, so that the door and window sash 21 moves transversely to squeeze or loosen the rubber strip 201; when the handle 23 is pushed or pulled, the transmission rod 24 is driven to move and drive the connecting column 111 to drive the transmission bar 11 to move along the length direction to push or pull the door and window.

[0044] Specifically, in this embodiment, a bushing 14 is sleeved outside the second guide post 134 to be connected with the pulley 131. By arranging the bushing 14, wear between the pulley 131 and the second guide post 134 can be prevented during the rotation of the pulley 131. Preferably, the other end of the second guide post 134 passes through the bushing 14 and the pulley 131 and then is connected with a gasket 15, so that the pulley 131 is installed on the second guide post 134 in a rotatable and vertically limited manner.

[0045] Specifically, the bracket 12 includes two relatively parallel and vertically spaced bracket plates 121. The two bracket plates 121 are supported and connected by support columns 122, so as to form a gap space for arranging the guiding assembly 130 between the two bracket plates 121. The gap space can be slightly higher than the height of the push plate 132, so that the movement of the push plate 132 is not blocked by the friction of the two bracket plates 121, making the movement smoother. The support columns 122 can be grouped in pairs, and the support columns 122 can be evenly spaced along the length direction of the bracket plate 121.

[0046] Please refer to Figure 13 and Figure 14 as shown in Figure 13 FIG. is a schematic structural diagram of the door and window assembly provided by the embodiment of the present invention after omitting the door and window frame. The door and window assembly 20 includes a door and window sash 21, a door and window frame 22 and the above-mentioned guiding wheel structure 10. The bracket 12 is arranged on the door and window sash 21. The transmission bar 11 is slidably arranged on the groove of the door and window sash 21. The pulley 131 is slidably connected to the guide groove 221 of the door and window frame 22. A rubber strip 201 is arranged on the door and window frame 22 facing the door and window sash 21.

[0047] Among them, a handle 23 is provided on the door and window sash 21. The handle 23 is in transmission connection with the transmission bar 11 through a transmission rod 24. By rotating the handle 23, the transmission rod 24 can be driven to move, so that the transmission bar 11 moves, and the transmission bar 11 drives the pulley guiding assembly 13 to move. Both ends of the guide wheel structure 10 are installed on the door and window sash 21 through fixing screws 101. A hole position 1201 for the fixing screw 101 to pass through can be provided on the bracket 12. An avoidance groove 1101 for the tail of the fixing screw 101 to slide through is provided along the length direction of the transmission bar 11. The handle 23 is in transmission connection with the connecting column 111 through the transmission rod 24, so that rotating the handle 23 can drive the transmission rod 24 to move and drive the connecting column 111 to drive the transmission bar 11 to move horizontally, so that the door and window sash 21 moves horizontally to squeeze or loosen the rubber strip 201; when the handle 23 is pushed or pulled, the transmission rod 24 is driven to move, and the connecting column 111 is driven to drive the transmission bar 11 to move along the length direction to push or pull the door and window. The door and window assembly 20 is provided with a guide wheel structure 10. The guide wheel structure 10 is provided with a transmission bar 11 and two or more pulley guiding assemblies on the bracket 12 connected to the door and window sash 21. The transmission bar 11 is slidably arranged on the bracket 12 and is in transmission connection with the handle 23 of the door and window sash 21. The transmission bar 11 is in transmission connection with the bracket 12 through the pulley guiding assembly 13. By driving the transmission bar 11 to drive the pulley guiding assembly 13 to move, the pulley guiding assembly 13 includes a pulley 131 and a guiding assembly 130 respectively in transmission connection with the pulley 131 and the transmission bar 11. When the transmission bar 11 moves, the pulley 131 is driven to displace along the direction transverse to the moving direction of the transmission bar 11, so as to drive the bracket 12 and the transmission bar 11 to move horizontally, so that the door and window sash 21 connected to the bracket 12 moves horizontally relative to the door and window frame 22. The door and window sash 21 can squeeze or loosen the rubber strip 201 between the door and window frame 22 and the door and window sash 21. Thus, when closing the door and window, the rubber strip 201 is squeezed to improve the sealing performance, and when opening the door and window, the rubber strip 201 is loosened to cooperate with the pulley 131 for pushing and pulling the door and window. While maintaining the advantages of pushing and pulling the door and window, it also has good sealing performance. Moreover, two or more pulley guiding assemblies 13 make the distance between adjacent pulleys 131 remain unchanged during the displacement process, that is, the increased translation amount of one pulley 131 is equal to the decreased translation amount of the other pulley 131, so that the door and window sash 21 can still maintain a stable state during the moving process and is not easy to shake.

[0048] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or replacements, and these modifications or replacements should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A guide wheel structure, characterized in that, Comprising: A bracket for connecting with a door or window sash, and the left and right sides of the bracket along the transmission direction are divided into a first side and a second side; A transmission bar slidably arranged on the bracket along the transmission direction; Two or more pulley guiding assemblies arranged on the bracket through a chute structure, and the pulley guiding assembly includes a pulley and a guiding assembly, and the guiding assembly is respectively in transmission connection with the pulley and the transmission bar, so that when the transmission bar moves, the pulley obtains a displacement amount perpendicular to the transmission direction; Adjacent pulleys respectively protrude from the first side and the second side, and the distance between adjacent pulleys remains unchanged during the displacement process, so that the indentation amount of one pulley relative to the first side is equal to the protrusion amount of the other pulley relative to the second side; The guiding assembly includes a push plate, a first guiding column and a second guiding column. The transmission bar is in transmission connection with one end of the push plate and the bracket through the first guiding column, so that the first guiding column displaces along the moving direction of the transmission bar; the other end of the push plate is connected with the pulley and the bracket through the second guiding column, so that the second guiding column displaces along the direction transverse to the moving direction of the transmission bar; The chute structure includes a first guiding groove and a second guiding groove respectively for the first guiding column and the second guiding column to slide through. The first guiding groove is arranged along the transmission direction, and the second guiding groove is arranged at an angle with the first guiding groove.

2. The guide wheel structure according to claim 1, characterized in that, The number of the pulley guiding assemblies is two.

3. The guide wheel structure according to claim 1, wherein, One end of the first guiding column is connected with the transmission bar, the first guiding column passes through one end of the push plate and then is slidably connected with the bracket, one end of the second guiding column is connected with the other end of the push plate, and the other end of the second guiding column passes through the bracket and then is connected with the pulley, so that the pulley is slidably connected above the bracket.

4. The guide wheel structure according to claim 1, wherein A bushing is sleeved outside the second guiding column to be connected with the pulley.

5. The guide wheel structure according to claim 4, characterized in that The other end of the second guiding column passes through the bushing and the pulley and then is connected with a gasket, so that the pulley is installed on the second guiding column in a rotatable and vertically limited manner.

6. The guide wheel structure according to claim 1, wherein, The transmission bar and the bracket are connected through a fixed shaft, and an adjustment groove for avoiding the fixed shaft is arranged on the transmission bar along the length direction.

7. The guide wheel structure according to claim 1, wherein A connecting column for driving connection with the handle of the door or window sash is arranged at the end of the transmission bar.

8. The guide wheel structure according to claim 1, characterized in that, The bracket includes two relatively parallel and spaced upper and lower bracket plates, and the two bracket plates are supported and connected by support columns, so that a gap space for arranging the guiding assembly is formed between the two bracket plates.

9. A door and window assembly, characterized in that, Including a door or window sash, a door or window frame and the guiding wheel structure according to any one of claims 1 to 8, the bracket is arranged on the door or window sash, the transmission bar is slidably arranged on the groove of the door or window sash, the pulley is slidably connected with the guide groove of the door or window frame, and a rubber strip is arranged on the door or window frame facing the door or window sash.

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