Push-pull side pressure pulley block and push-pull side pressure door and window with same

Abstract

The utility model discloses a push-pull side pressure pulley assembly which comprises a sliding seat, a pulley yoke, a pulley plate and a second guide pulley, and the sliding seat is arranged at the bottom of a door and window main body; the pulley yoke is in sliding fit with the sliding seat, and a first guide pulley is arranged on the pulley yoke; the pulley plates are arranged on the front side and the rear side of the pulley yoke in pairs at intervals. The second guide pulleys are clamped and movably connected between the two pulley plates and arranged on the left side and the right side of the pulley yoke in pairs at intervals, when the pressure applied to the second guide pulleys by the door and window body is larger than the initial tension of the elastic pieces, the elastic pieces deform, and the pressure applied to the second guide pulleys by the elastic pieces does not exceed the maximum bearing capacity all the time. Meanwhile, the second guide pulley can move relative to the pulley plate to balance the pressure borne by each pulley again, the situation that the pulleys are stuck or damaged is prevented, and then normal use of the push-pull side pressure door and window system is guaranteed. In addition, the utility model further provides a push-and-pull side-pressing door and window with the sliding door and window.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window accessories, in particular to a push-pull side-pressure pulley block and a push-pull side-pressure door and window having the same. Background Art

[0002] This section only provides background information related to the present application to help those skilled in the art understand the present application more thoroughly and accurately, and it is not necessarily prior art.

[0003] Doors and windows can be opened and closed in various ways, such as push-pull, casement, and lift. In the case of push-pull doors and windows, due to the limitation of their own sliding structure, their sealing performance is poor, and it is difficult to meet the requirements of some environments with high usage requirements. For this reason, some push-pull doors and windows that can achieve side pressure sealing have appeared on the market. After sliding and closing, such doors and windows can be driven to gradually move sideways toward the door frame by turning the handle, and the sealing strips on the doors and windows are pressed tightly against the door frame, thereby improving the sealing performance of the doors and windows when they are closed.

[0004] The existing sliding and side-pressure door and window systems on the market do not have an absolutely equal space between the door and window body and the lower sliding rail due to unavoidable processing dimensional errors. When the door and window body is large and three or more pulley sets are required, due to the force imbalance, one pulley set will inevitably have a load greater than the other pulley sets. When the actual load on the pulley set is greater than its rated load, the pulley is prone to damage, and then the load is transferred to other pulley sets, causing damage to the pulleys in other pulley sets, ultimately resulting in the sliding and side-pressure door and window system being unable to be used normally. Utility Model Content

[0005] In order to overcome the defects of the prior art described above, the utility model provides a push-pull side pressure pulley block and a push-pull side pressure door and window having the same, so as to solve the problem of pulley damage caused by unbalanced force mentioned in the background technology above.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A push-pull side pressure pulley assembly is arranged at the bottom of a door or window body and is located at a non-end position, and comprises:

[0008] A sliding seat, which is used to be installed at the bottom of the door and window body;

[0009] A pulley frame, which is slidably matched with the sliding seat; the pulley frame is provided with a first guide pulley;

[0010] Pulley plates are arranged in pairs at intervals on the front and rear sides of the pulley frame;

[0011] The second guide pulley is clamped and movably connected between the two pulley plates and arranged in pairs at intervals on the left and right sides of the pulley frame;

[0012] an elastic component, the number of which corresponds to the number of the second guide pulleys; the elastic component comprises a mounting seat clamped and fixedly connected between the two pulley plates, a bracket connected to the second guide pulley and rotatably sleeved on the outer sides of the two pulley plates, and an elastic member respectively connected to the mounting seat and the bracket;

[0013] When the pressure applied by the door and window body to the second guide pulley is greater than the initial tension of the elastic member, the elastic member is deformed and the second guide pulley moves relative to the pulley plate to achieve balance.

[0014] Furthermore, a fixing pin is passed through the second guide pulley, a positioning hole is opened on the pulley plate, and two ends of the fixing pin pass through the two positioning holes respectively and are fixed to two sides of the bracket respectively.

[0015] Furthermore, the positioning holes are waist-shaped holes that are arranged vertically and are in the shape of long strips.

[0016] Furthermore, the bracket and the pulley plate are connected in rotation via a slot block clamping structure, wherein:

[0017] The slot block clamping structure comprises a clamping hole and a clamping block which are clamped and matched with each other. One of the bracket and the pulley plate is provided with the clamping hole, and the other one is provided with the clamping block.

[0018] Furthermore, the elastic member is a return spring.

[0019] Furthermore, it also includes a slider which is slidably mounted on the sliding seat and is in transmission cooperation with the pulley frame; the slider is used to be in transmission connection with the transmission bar;

[0020] Among them, the sliding seat is provided with a first sliding groove for the sliding block to slide. When the transmission bar is driven to slide to drive the sliding block to slide on the first sliding groove, the sliding seat and the pulley frame can be driven to move laterally relative to each other, thereby causing the door and window body to press the second guide pulley sideways.

[0021] Furthermore, it also includes a driving shaft passing through the sliding block, and the pulley frame is provided with a guide groove for one end of the driving shaft to extend into and engage with each other for sliding cooperation;

[0022] When the sliding block is driven to slide on the first sliding groove, the sliding seat and the pulley frame can be relatively laterally displaced through the clamping and sliding cooperation between the driving shaft and the guide groove.

[0023] Furthermore, the pulley frame includes a pulley frame body and a cover plate covered on the pulley frame body, the cover plate is provided with a guide hole, the pulley frame body is provided with a groove connected to the guide hole and adapted to its shape, the guide hole cooperates with the groove to form the guide groove.

[0024] Furthermore, it also includes a positioning member detachably arranged on the pulley frame, and the positioning member is in conflict with the pulley frame to achieve initial positioning of the pulley frame.

[0025] In addition, the utility model also provides a sliding side pressure door and window, comprising the above-mentioned sliding side pressure pulley block, a door and window body and a lower slide rail, wherein:

[0026] The sliding seat is installed at the bottom of the door and window body;

[0027] The first guide pulley is slidably arranged on the lower slide rail;

[0028] It also includes a convex edge arranged on the side of the lower sliding rail, and the second guide pulley is slidably arranged on the side wall of the convex edge.

[0029] To sum up, the utility model provides a push-pull side pressure pulley group and a push-pull side pressure door and window having the same. By arranging an elastic component on the push-pull side pressure pulley group, when force imbalance occurs, that is, when the load of the door and window body applied to the push-pull side pressure pulley group is greater than the initial tension of the elastic component, the elastic component can be deformed, and the pressure applied by the elastic component to the second guide pulley never exceeds its maximum bearing capacity, so it will not cause damage to the second guide pulley. At the same time, the second guide pulley can move relative to the pulley plate to rebalance the pressure applied to each pulley, thereby reducing the pressure applied to a single pulley, preventing the pulley from getting stuck or damaged, and thus ensuring the normal use of the push-pull side pressure door and window system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of the push-pull side pressure pulley block of the utility model;

[0031] Figure 2 This is an exploded schematic diagram of the push-pull side pressure pulley block of the utility model;

[0032] Figure 3 It is a structural schematic diagram of the side pressure pulley assembly in the push-pull side pressure pulley assembly of the utility model;

[0033] Figure 4 It is an exploded schematic diagram of the side pressure pulley assembly of the utility model;

[0034] Figure 5 It is a structural schematic diagram of a pulley frame in a side pressure pulley assembly of the utility model;

[0035] Figure 6 It is a partial structural schematic diagram of the side pressure pulley assembly of the utility model;

[0036] Figure 7 It is a cross-sectional schematic diagram of the side pressure pulley assembly of the utility model;

[0037] Figure 8 It is a structural schematic diagram of the sliding side pressure door and window of the utility model.

[0038] The meanings of the reference numerals are as follows:

[0039] 1. side pressure pulley assembly; 11. sliding seat; 1101. first slide groove; 1102. second slide groove; 1103. positioning slot; 12. first slide groove plate; 13. second slide groove plate; 14. driving shaft; 15. slider; 1501. slider body; 1502. slider sleeve; 16. shaft sleeve; 17. pulley frame; 1701. pulley frame body; 17011. convex strip; 17012. convex column; 17013. groove; 17014. avoidance hole; 1702, cover plate; 17021, guide hole; 18, wear-resistant sleeve; 19, plug cover; 110, first guide pulley; 111, positioning piece; 2, push-pull pulley assembly; 21, pulley plate; 211, positioning hole; 212, clamping block; 22, second guide pulley; 221, fixing pin; 23, mounting seat; 24, elastic member; 25, bracket; 251, mounting hole; 252, clamping hole; 3, door and window body; 4, lower profile; 5, lower sliding rail; 6, convex edge. DETAILED DESCRIPTION

[0040] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0043] Embodiment 1

[0044] See also Figure 1-7 The utility model provides a push-pull side pressure pulley group, including a side pressure pulley assembly 1 and a push-pull pulley assembly 2, wherein the side pressure pulley assembly 1 includes a sliding seat 11 for being installed at the bottom of a door and window body 3, a pulley frame 17 slidably matched with the sliding seat 11, and a first guide pulley 110 arranged on the pulley frame 17; the push-pull pulley assembly 2 includes two pulley plates 21 arranged in pairs at intervals on the front and rear sides of the pulley frame 17, two second guide pulleys 22 that are clamped and movably connected between the two pulley plates 21 and arranged in pairs at intervals on the left and right sides of the pulley frame 17, and two elastic components corresponding to the number of the second guide pulleys 22; wherein the elastic component includes a mounting seat 23 that is clamped and fixedly connected between the two pulley plates 21 and is located at one end, a bracket 25 that is connected to the second guide pulley 22 and rotatably sleeved on the outer sides of the two pulley plates 21, and an elastic member 24 that is respectively connected to the mounting seat 23 and the bracket 25; preferably, the elastic member 24 is a return spring.

[0045] Therefore, when the push-pull side pressure pulley block is connected to the door and window body 3 in this embodiment, the gravity of the door and window body 3 is converted into pressure on the sliding seat 11. Since the sliding seat 11 is slidably connected to the pulley frame 17, the pulley frame 17 is also subjected to pressure and transmitted to the pulley plate 21. The second guide pulley 22 is connected to the pulley plate 21, so the second guide pulley 22 also bears the gravity of the door and window body 3. Therefore, the present application arranges an elastic component on the push-pull side pressure pulley block. When there is an unbalanced force, that is, when the push-pull side pressure pulley block is When the load exerted by the door and window body 3 on the pressure pulley group is greater than the initial tension of the elastic member 24, the elastic member 24 may be deformed, and the pressure exerted by the elastic member 24 on the second guide pulley 22 never exceeds its maximum bearing capacity, so the pulley will not be damaged. At the same time, the second guide pulley 22 may move relative to the pulley plate 21 to rebalance the pressure exerted on each pulley, thereby reducing the pressure exerted on a single pulley and preventing the pulley from getting stuck or damaged, thereby ensuring the normal use of the sliding and side-pressure door and window system.

[0046] Specifically, a fixing pin 221 is provided on the second guide pulley 22, a positioning hole 211 is provided on the pulley plate 21, mounting holes 251 are provided on both sides of the bracket 25, and both ends of the fixing pin 221 pass through the two positioning holes 211 and are fixed to the mounting holes 251 on both sides of the bracket 25. Preferably, the positioning hole 211 is a vertically arranged and long waist-shaped hole, and the fixing pin 221 can move along the guide of the positioning hole 211 to realize the movement of the second guide pulley 22.

[0047] See also Figure 1-2The bracket 25 and the pulley plate 21 are rotatably connected via a slot block clamping structure, and the slot block clamping structure includes a clamping hole 252 and a clamping block 212 that are mutually clamped and relatively rotatable. The clamping hole 252 is opened on both sides of the bracket 25, and the clamping block 212 is provided on the outer wall of the pulley plate 21. When the reset spring is compressed, it can drive the bracket 25 to rotate relative to the pulley plate 21. The bracket 25 is connected to the second guide pulley 22, so it can drive the second guide pulley 22 to move relative to the pulley plate 21.

[0048] It should be noted that in other embodiments, the positions of the card hole 252 and the card block 212 may be interchanged, which can also achieve the same technical effect, and are not limited here.

[0049] See also Figure 3-7 The side pressure pulley assembly 1 also includes a slider 15 which is slidably mounted on the sliding seat 11 and is in transmission cooperation with the pulley frame 17, and the slider 15 is used to be connected to the transmission bar in transmission; wherein, the sliding seat 11 is provided with a first slide groove 1101 for the slider 15 to slide; therefore, when the transmission bar is driven to slide to drive the slider 15 to slide on the first slide groove 1101, the sliding seat 11 and the pulley frame 17 can be further driven to move sideways relative to each other, thereby causing the door and window body 3 to side-press the first guide pulley 110.

[0050] Therefore, by arranging the slider 15 between the transmission bar and the pulley frame 17 for transmission cooperation, and the sliding seat 11 is provided with a first sliding groove 1101 for the sliding slider 15 to slide, since the processing accuracy of the first sliding groove 1101 can be guaranteed, it can be ensured that the slider 15 does not shake when sliding on the first sliding groove 1101, thereby avoiding the pulley frame 17 that is transmission-coordinated with it from shaking, and further avoiding the sliding seat 11 and the door and window main body 3 from shaking.

[0051] Specifically, the sliding seat 11 is also provided with a cavity which is connected to the first sliding groove 1101 and is open at one end, and two second sliding grooves 1102 which are connected to the cavity and are located on the left and right sides of the cavity. The pulley frame 17 is arranged on the cavity and the two sides of the pulley frame 17 are provided with convex strips 17011 which slidably cooperate with the second sliding grooves 1102; preferably, the first sliding groove 1101 is extended in the left and right directions, and the second sliding groove 1102 is extended in the front and back directions. When the sliding block 15 is driven to slide in the left and right directions on the first sliding groove 1101, the sliding seat 11 can be driven to move in the front and back directions relative to the pulley frame 17 through the transmission cooperation between it and the pulley frame 17.

[0052] See also Figure 4The side pressure pulley assembly 1 also includes a first slide groove plate 12 arranged on the sliding seat 11 at intervals in front and back and located in the cavity. One side of the first slide groove plate 12 is bent and covers the side wall of the first slide groove 1101. The first slide groove plate 12 is made of stainless steel and has a relatively smooth surface, thereby reducing the friction generated when the slider 15 slides on the first slide groove 1101, making it slide more smoothly. Similarly, the side pressure pulley assembly 1 also includes a second slide groove plate 13 arranged in the second slide groove 1102 at intervals in the left and right and adapted to its shape. The second slide groove plate 13 is also made of stainless steel and has a relatively smooth surface, thereby reducing the friction generated when the sliding seat 11 and the pulley frame 17 move relative to each other, making the sliding between the two smoother.

[0053] Preferably, the wear-resistant sleeve 18 is sleeved on the convex strip 17011 of the pulley frame 17, and the wear-resistant sleeve 18 is in sliding contact with the second slide slot plate 13. Therefore, by providing the wear-resistant sleeve 18, the pulley frame 17 and the second slide slot plate 13 can be prevented from directly sliding in contact with each other to cause wear, thereby extending the service life thereof, and when the wear-resistant sleeve 18 is worn, it is also convenient to disassemble and replace it, and the operation is simple and convenient.

[0054] Furthermore, the side pressure pulley assembly 1 also includes a driving shaft 14 inserted into the slider 15, and the pulley frame 17 is provided with a guide groove for one end of the driving shaft 14 to extend into and slide in engagement with each other; therefore, when the slider 15 is driven to slide on the first slide groove 1101, the sliding seat 11 and the pulley frame 17 can be relatively shifted laterally through the engagement and sliding engagement between the driving shaft 14 and the guide groove.

[0055] The drive shaft 14 also includes a sleeve 16 which is sleeved on one end of the drive shaft 14 and is in sliding contact with the guide groove. Thus, by providing the sleeve 16, the drive shaft 14 can be prevented from directly sliding in contact with the guide groove and causing wear. When the sleeve 16 is worn, it is also convenient to disassemble and replace it, and the operation is simple and convenient.

[0056] Specifically, the pulley frame 17 includes a pulley frame body 1701 and a cover plate 1702 covering the pulley frame body 1701. The cover plate 1702 is provided with a guide hole 17021. The pulley frame body 1701 is provided with a groove 17013 connected to the guide hole 17021 and matching its shape. The guide hole 17021 cooperates with the groove 17013 to form the above-mentioned guide groove. Among them, two convex strips 17011 are respectively integrally formed on the left and right sides of the pulley frame body 1701; two convex columns 17012 are also spaced apart on the pulley frame body 1701 along the left and right directions, and the two first guide pulleys 110 are respectively mounted on the two convex columns 17012.

[0057] It should be noted that when the slider 15 slides on the first slide groove 1101, the slider 15 simultaneously contacts the cover plate 1702; therefore, in order to improve the sliding smoothness of the slider 15, the cover plate 1702 is also made of stainless steel, and its surface is relatively smooth, thereby reducing the friction generated between the slider 15 and the cover plate 1702 when sliding.

[0058] Among them, the slider 15 includes a slider body 1501 and a slider sleeve 1502 mounted on the slider body 1501. The slider body 1501 is slidably mounted on the first slide groove 1101 through the slider sleeve 1502, thereby avoiding wear caused by direct contact between the slider body 1501 and the first slide groove 1101, and when the slider sleeve 1502 is worn, it is also convenient to disassemble and replace it.

[0059] See also Figure 5 and Figure 7 The pulley frame body 1701 is also provided with an avoidance hole 17014 connected to the groove 17013 , and the shaft sleeve 16 can pass through the avoidance hole 17014 and be sleeved on the driving shaft 14 .

[0060] Therefore, when it is necessary to assemble the side pressure pulley assembly 1 of the present application, first install the slider 15 and the pulley frame 17 on the sliding seat 11 in sequence, then pass the drive shaft 14 through the slider 15 from top to bottom and extend it into the guide groove, and then pass the sleeve 16 from bottom to top through the avoidance hole 17014 and sleeve it on the drive shaft 14 to complete the assembly.

[0061] It also includes a blocking cover 19, which is arranged on the avoidance hole 17014 to achieve sealing, thereby making the product appearance more neat and beautiful, and also preventing dust and other impurities from falling into the groove and causing transmission problems.

[0062] Furthermore, the side pressure pulley assembly 1 further comprises a positioning member 111 detachably arranged on the pulley frame 17, and the positioning member 111 is in conflict with the pulley frame 17 to achieve the initial positioning of the pulley frame 17. Specifically, the positioning member 111 is an elastically deformable clamping ring, and a positioning clamping groove 1103 is provided on the sliding seat 11, and the clamping ring is detachably clamped on the positioning clamping groove 1103.

[0063] When assembling for the first time, the pulley frame 17 needs to be initially positioned, so the positioning member 111 needs to be installed on the positioning slot 1103; after the assembly is completed, the positioning member 111 can be disassembled to avoid interference with other parts.

[0064] Embodiment 2

[0065] See also Figure 8The utility model also provides a sliding side-pressure door and window, comprising the sliding side-pressure pulley assembly of the above-mentioned embodiment 1, a door and window body 3 and a lower profile 4 arranged below the door and window body 3, the sliding seat 11 in the side-pressure pulley assembly 1 is installed at the bottom of the door and window body 3; the lower profile 4 is provided with a lower sliding rail 5 and a convex edge 6 located on the side of the lower sliding rail 5, the first guide pulley 110 in the side-pressure pulley assembly 1 is slidably arranged on the lower sliding rail 5, and the second guide pulley 22 in the push-pull pulley assembly 2 is slidably arranged on the side wall of the convex edge 6; thus, the door and window body 3 can be slidably arranged on the lower profile 4 through the sliding side-pressure pulley assembly.

[0066] In summary, the utility model provides a push-pull side pressure pulley group and a push-pull side pressure door and window having the same. By arranging an elastic component on the push-pull side pressure pulley group, when there is a force imbalance, that is, when the load of the door and window main body 3 on the push-pull side pressure pulley group is greater than the initial tension of the elastic member 24, the elastic member 24 can be deformed, and the pressure applied by the elastic member 24 to the second guide pulley 22 never exceeds its maximum bearing capacity, so it will not cause damage to the pulley. At the same time, the second guide pulley 22 can move relative to the pulley plate 21 to rebalance the pressure on each pulley, thereby reducing the pressure on a single pulley and preventing the pulley from getting stuck or damaged, thereby ensuring the normal use of the push-pull side pressure door and window system.

[0067] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0068] It should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0069] In addition, in the description of the present utility model, "multiple" and "several" mean two or more than two, unless otherwise clearly and specifically defined.

[0070] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A push-pull side pressure pulley block, characterized in that: It is configured at the bottom of the door and window body and located at a non-end position, and includes: A sliding seat, which is used to be installed at the bottom of the door and window body; A pulley frame, which is slidably matched with the sliding seat; the pulley frame is provided with a first guide pulley; Pulley plates are arranged in pairs at intervals on the front and rear sides of the pulley frame; The second guide pulley is clamped and movably connected between the two pulley plates and arranged in pairs at intervals on the left and right sides of the pulley frame; an elastic component, the number of which corresponds to the number of the second guide pulleys; the elastic component comprises a mounting seat clamped and fixedly connected between the two pulley plates, a bracket connected to the second guide pulley and rotatably sleeved on the outer sides of the two pulley plates, and an elastic member respectively connected to the mounting seat and the bracket; When the pressure applied by the door and window body to the second guide pulley is greater than the initial tension of the elastic member, the elastic member is deformed and the second guide pulley moves relative to the pulley plate to achieve balance.

2. The push-pull side pressure pulley assembly according to claim 1, characterized in that: A fixing pin is passed through the second guide pulley, a positioning hole is opened on the pulley plate, and two ends of the fixing pin pass through the two positioning holes respectively and are fixed to two sides of the bracket respectively.

3. The push-pull side pressure pulley assembly according to claim 2, characterized in that: The positioning holes are vertically arranged and long waist-shaped holes.

4. The push-pull side pressure pulley assembly according to claim 1, characterized in that: The bracket and the pulley plate are rotatably connected via a slot block clamping structure, wherein: The slot block clamping structure comprises a clamping hole and a clamping block which are clamped and matched with each other. One of the bracket and the pulley plate is provided with the clamping hole, and the other one is provided with the clamping block.

5. The push-pull side pressure pulley assembly according to claim 1, characterized in that: The elastic member is a return spring.

6. The push-pull side pressure pulley assembly according to any one of claims 1 to 5, characterized in that: It also includes a slider which is slidably mounted on the sliding seat and is in transmission cooperation with the pulley frame; the slider is used for transmission connection with the transmission bar; Among them, the sliding seat is provided with a first sliding groove for the sliding block to slide. When the transmission bar is driven to slide to drive the sliding block to slide on the first sliding groove, the sliding seat and the pulley frame can be driven to move laterally relative to each other, thereby causing the door and window body to press the second guide pulley sideways.

7. The push-pull side pressure pulley assembly according to claim 6, characterized in that: It also includes a driving shaft that passes through the slider, and the pulley frame is provided with a guide groove for one end of the driving shaft to extend into and engage with each other for sliding cooperation; When the sliding block is driven to slide on the first sliding groove, the sliding seat and the pulley frame can be relatively laterally displaced through the clamping and sliding cooperation between the driving shaft and the guide groove.

8. The push-pull side pressure pulley assembly according to claim 7, characterized in that: The pulley frame includes a pulley frame body and a cover plate covered on the pulley frame body, a guide hole is opened on the cover plate, and a groove connected to the guide hole and matched with the shape thereof is opened on the pulley frame body, and the guide hole cooperates with the groove to form the guide groove.

9. The push-pull side pressure pulley assembly according to claim 6, characterized in that: It also includes a positioning piece which is detachably arranged on the pulley frame, and the positioning piece is in conflict with the pulley frame to achieve initial positioning of the pulley frame.

10. A sliding side pressure door and window, characterized in that: The invention comprises a push-pull side pressure pulley assembly, a door and window body and a lower sliding rail as claimed in any one of claims 1 to 9, wherein: The sliding seat is installed at the bottom of the door and window body; The first guide pulley is slidably arranged on the lower slide rail; It also includes a convex edge arranged on the side of the lower sliding rail, and the second guide pulley is slidably arranged on the side wall of the convex edge.

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