A push-pull sliding underhung window

Abstract

A sliding down-hung window includes a window frame and a window sash. The window sash has a handle and side-pressing mechanisms around its perimeter. The top of the sash is movably connected to the window frame via the down-hung mechanism. The side-pressing mechanism includes corner brackets located at the four corners of the window sash. The four corner brackets are drive-connected to the handle to form a closed transmission structure. The down-hung mechanism includes a first hinge rod, a second hinge rod, and a connector. One end of the second hinge rod is slidably connected to the window frame, and the other end is movably connected to the connector. The connector is located at the top of the window sash. The first hinge rod is rotatably connected between the corner brackets above the window sash and the second hinge rod, and has a folded hole. A sliding displacement mechanism connects the corner brackets at the bottom of the window sash to the lower window frame. The side-pressing mechanism of the present invention drives the first locking member to move to the side of the folded hole, and drives the guide member to move along the transmission direction of the side-pressing mechanism, so that the window sash as a whole is pressed outward onto the window frame, and there will be no uneven force on the four sides of the window sash when locking, which improves the sealing performance between the window sash and the window frame and avoids the sealing problem between the window sash and the window frame due to the large number of connecting parts at the bottom of the window sash and the window frame.

Description

Technical Field

[0001] This invention relates to the field of door and window technology, specifically to a sliding bottom-hung window. Background Technology

[0002] Existing window sashes generally have inward opening and bottom-hung functions, serving both ventilation and rain protection purposes. However, existing window sashes occupy a significant amount of space when opening inward. Therefore, current technology includes drift windows that combine inward opening, bottom-hung, and sliding functions. The lower part of the drift window is connected to the guide rail of the window frame via a connecting arm, so it does not occupy a large amount of space when the window sash is open.

[0003] When using existing drift windows, the window sash needs to be pulled outwards to a certain position. The connecting arm is pulled out, allowing the window sash to detach from the window frame and be pushed and pulled. Since the top and bottom of the window sash are connected by connecting arms, the window sash slides on the track of the window frame via the connecting arms. However, the structure of the connecting arms on the top and bottom sides is relatively complex, making it difficult to completely seal the gap between the window sash and the window frame, resulting in air leakage or water seepage, which affects the indoor temperature and humidity. Furthermore, this type of drift window typically uses hardware around the outer edge of the window frame to press the window sash tightly against the frame. Existing hardware includes handles and transmission mechanisms located on three sides of the window sash. The transmission mechanism includes corner brackets located at the corners of the window frame, with spring plates inside. The transmission mechanism is connected to the handle for transmission. The spring plates have locking points that push the window sash to move sideways. However, when the handle switches states, it pushes or pulls the spring plates to move along the outer edge of the window sash, thereby actuating the locking points. If the spring plates are frequently subjected to pushing force, they may deform or break, affecting their use. Summary of the Invention

[0004] To address the technical problems existing in the background art described above, the present invention provides a sliding down-hung window.

[0005] The technical solution of this invention is as follows: A sliding down-hung window includes a window frame and a window sash. The window sash is equipped with a handle and a side-pressing mechanism around its perimeter. The top of the window sash is movably connected to the window frame via the down-hung mechanism. The side-pressing mechanism includes corner brackets located at the four corners of the window sash. The four corner brackets are connected to the handle via a transmission mechanism to form a closed transmission structure. The lower suspension mechanism includes a first hinge rod, a second hinge rod, and a connector. One end of the second hinge rod is slidably connected to the window frame, and the other end is movably connected to the connector, which is located at the top of the window sash. The first hinge rod is rotatably connected between the corner bracket above the window sash and the second hinge rod, and has a folded hole on it. The corner bracket includes a housing and an elastic connecting piece that can move within the housing. The housing is connected to the outer edge of the window sash, and a first elongated hole is provided on the housing along the length of the upper edge of the window sash. A first locking element is provided on the elastic connecting piece of the upper corner bracket, which passes through the first elongated hole and the folded hole. Regarding the specific structure of the folded hole, the folded hole includes a first guide hole and a second guide hole that are connected. The first guide hole is set along the length of the first hinge rod, and the second guide hole is close to the hinge point between the first hinge rod and the corner bracket. The end of the second guide hole that is away from the first guide hole extends towards the inside of the window sash, and the angle between the second guide hole and the first guide hole is an obtuse angle. The first guide hole can coincide with the first elongated hole when the window sash is in a locked or sliding state. When the window sash is locked, the first locking member is located on the side of the first guide hole away from the second guide hole, that is, at the end of the first guide hole near the hinge point of the first hinge rod and the second hinge rod, and the first locking member can be tightly locked against one side of the second locking member; when the window sash is in the sliding state, the first locking member is located at the intersection of the first guide hole and the second guide hole; when the window sash is in the bottom-hung state, the first locking member is located on the side of the second guide hole away from the first guide hole, at which time the included angle between the first hinge rod and the second hinge rod is the largest; The second hinge rod has a second locking element at the lower part near the end of the window frame. The second locking element can abut against the first locking element when the first hinge rod and the second hinge rod are folded to restrict their movement. A sliding switching mechanism is connected between the corner bracket at the bottom of the window sash and the lower window frame. The sliding switching mechanism includes a base and a sliding unit. The bottom of the sliding unit is horizontally slidably connected to the guide rail of the window frame, and the upper part is vertically slidably connected to the bottom of the base. The upper part of the base is connected to the housing of the adjacent corner bracket. The base and the upper part of the sliding unit are connected to the elastic connecting piece of the corner unit located at the bottom of the window sash via a guide. The upper part of the base has a second elongated hole arranged horizontally, and the upper part of the sliding unit has a reversing hole. The lower part of the guide passes through the first elongated hole, the second elongated hole and the reversing hole in sequence. The lateral movement of the guide can drive the base to slide vertically.

[0006] A side-pressure mechanism connected to the handle drive is installed on the window sash. The side-pressure mechanism is arranged around the perimeter of the window sash. When the window sash is locked, it can drive the first locking member of the lower suspension mechanism located above the window sash to move to the side away from the corner of the window sash from the folding hole. At the same time, it can drive the guide member located below the window sash to move along the transmission direction of the side-pressure mechanism, thereby driving the base to slide longitudinally. This makes the entire window sash press outward against the window frame, preventing uneven force distribution around the window sash when locked and improving the sealing performance between the window sash and the window frame. When the window sash is pushed, pulled, or slid, it can be moved inward as a whole under the action of the first locking member and the sliding unit, but it does not disengage from the guide rail of the window frame. This allows the window sash to be pushed, pulled, and slid, avoiding sealing problems between the window sash and the window frame due to the large number of connecting parts at the bottom of the window sash.

[0007] The specific structure of the aforementioned sliding unit is as follows: the sliding unit includes a pulley seat and a pulley disposed at its lower part and slidably connected to the guide rail. The reversing hole is opened on the upper part of the pulley seat near the second long hole. The upper part of the pulley seat is slidably connected to the base in the longitudinal direction. The lower part of the guide member is slidably connected in the reversing hole. Under the lateral pull of the elastic connecting piece, the guide member can slide in the reversing hole along its direction, thereby driving the base to move in the longitudinal direction.

[0008] Regarding the specific structure of the reversing hole, the reversing hole includes a straight hole, an oblique hole and a first arc-shaped hole connected in sequence. The first arc-shaped hole is set near the corner of the window sash. The length direction of the straight hole is consistent with the length direction of the lower edge of the window sash, and the oblique hole is set at the end away from the straight hole and inclined to the outside of the window sash. When the window sash is in the bottom-hung state, the guide can slide to the end of the straight hole away from the inclined hole, and the first long hole, the second long hole and the straight hole coincide; When the window sash is locked, the guide can slide into the first arc-shaped hole, the center of which is located directly below the first long hole and the second long hole.

[0009] When the window sash is in the sliding or horizontal position, the guide can slide into the hole near the intersection of the straight hole and the oblique hole.

[0010] The specific structure of the aforementioned side-pressure mechanism is as follows: the side-pressure mechanism further includes two sets of first transmission components and two sets of second transmission components. The two sets of first transmission components drive and connect adjacent elastic connecting pieces on the upper and lower sides of the window sash in the horizontal direction, respectively. The two sets of second transmission components drive and connect adjacent elastic connecting pieces on the left and right sides of the window sash in the vertical direction, respectively. One of the second transmission components is equipped with a plate hook, and the window frame is equipped with a limiting plate that slides with the plate hook. The plate hook can be inserted into the limiting plate when the window sash is locked. When the window sash is suspended, the plate hook can move upward under the drive of the adjacent second transmission component, disengage from the limiting plate, and facilitate the upper part of the window sash to tilt inward.

[0011] To ensure that the plate hook on one side of the window sash can lock or detach from the window frame, and that the left and right sides of the window sash are evenly stressed when locked, another second transmission component is connected to the handle transmission. It is equipped with a snap-fit ​​component, and the window frame is equipped with a snap-fit ​​seat that cooperates with the snap-fit ​​component. The snap-fit ​​component can snap into or detach from the snap-fit ​​seat in the vertical direction, and the snap-fit ​​seat is flush with the height of the limiting plate.

[0012] Regarding the positions of the second and first locking components, to ensure that one side of the second locking component can abut against the first locking component located in the first guide hole when the window sash is locked, the first and second hinge rods are connected by a first pin. The outer diameter of the middle part of the first pin is larger than the outer diameters at both ends. The two ends of the first pin are rotatably connected to the first and second hinge rods, respectively, so that there is a gap between the upper surface of the first hinge rod and the lower surface of the second hinge rod. The gap is used for the contact and locking of the first and second locking components. The lower surface of the second locking component is located between the upper surface of the first locking component and the upper surface of the first hinge rod.

[0013] One structural form of the connector is that the connector consists of a third hinge rod and a fourth hinge rod that are hinged vertically. One end of the fourth hinge rod is located on the upper part of the corner bracket and on the side away from the first locking member. Its other end is hinged to the end of the second hinge rod away from the roller through the third hinge rod. The third hinge rod and the fourth hinge rod can overlap when the window sash is in the locked or sliding state.

[0014] The aforementioned connector consists of a third hinge rod and a fourth hinge rod stacked on top of each other. During rotation, the third and fourth hinge rods may interfere with each other, and the overall thickness is relatively large, making it inconvenient to install between the upper edge of the window sash and the window frame. Therefore, another structural form of the connector is that the connector is a connecting plate located on the upper corner bracket, with a second arc-shaped hole opened on it along the width direction of the window sash. The end of the second arc-shaped hole away from the first hinge rod extends towards the inside of the window sash, and the end of the second hinge rod away from the roller slides into the second arc-shaped hole.

[0015] The beneficial effects of this invention are as follows: The corner mechanism, first transmission component, and second transmission component of the side pressure mechanism are arranged around the window sash. The elastic connecting pieces in the four corner mechanisms are respectively connected by the first transmission component and the second transmission component. One of the second transmission components is connected to the handle. By switching different angles with the handle, the side pressure mechanism can switch different transmission directions, so that the first transmission component, the second transmission component, and the elastic connecting pieces can move in one direction around the window sash. The elastic connecting pieces are only subjected to the tension from the first transmission component and / or the second transmission component. Compared with the elastic connecting pieces of the prior art, which are not only subjected to tension but also to the thrust when the handle switches directions, making the elastic connecting pieces easy to bend or break, this invention can reduce the bending phenomenon of the elastic connecting pieces. Furthermore, when the window sash is locked, the side pressure mechanism can move the first locking piece above the window sash to the end of the first guide hole away from the second guide hole, and at the same time move the guide piece below the window sash into the first arc-shaped hole, thereby moving the base on both sides and the entire window sash outward, so that the window sash and the window frame are squeezed tightly, and there will be no uneven force on the four sides of the window sash when it is locked, which can improve the sealing performance between the window sash and the window frame. When the window sash is pushed, pulled, or slid, it can be moved inward as a whole under the action of the first locking device and the sliding unit, but without disengaging from the guide rail of the window frame, so that the window sash can be pushed, pulled, and slid. In the bottom-hung state, the upper part of the window sash is tilted inward at a certain angle, and the pulley at the bottom of the window sash can tilt and move at an angle on the guide rail, but without disengaging from the guide rail, thus realizing the bottom-hung state of the window sash. This invention can avoid the sealing problems between the window sash and the window frame caused by a large number of connecting parts between the window sash and the lower part of the window frame. Attached Figure Description

[0016] In the attached diagram: Figure 1 A schematic diagram of the window sash in its under-hung state. Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 for Figure 1 Exploded view of the corner unit, base, and pulley seat in the lower left corner; Figure 4 This is a schematic diagram of the pulley seat structure; Figure 5 This is a structural diagram of the window sash in the locked state; Figure 6 for Figure 5 Enlarged structural diagram at point B; Figure 7 for Figure 1 Enlarged structural diagram at point C; Figure 8 for Figure 5 The left view; Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure of the middle window sash and the lower part of the window frame; Figure 10 This is a schematic diagram of the corner mechanism and translation sliding mechanism. Figure 11 A schematic diagram of the window sash in its sliding and horizontal position. Figure 12 for Figure 11 Enlarged structural diagram at point D; Figure 13 for Figure 11 The left view; Figure 14 for Figure 13 Enlarged structural diagram at point E; Figure 15 This is a schematic diagram of the first structure of the lower suspension mechanism in the lower suspension state; Figure 16 for Figure 15 The second structural diagram; Figure 17This is a schematic diagram of the side pressure mechanism of the window sash in the locked state; Figure 18 for Figure 17 Enlarged structural diagram at point F; Figure 19 for Figure 17 Enlarged structural diagram at point G in the middle; Figure 20 This is a schematic diagram of another structure for the connector; The components represented by the various reference numerals in the diagram are: 1. Window sash; 2. Window frame; 201. Guide rail; 3. Side pressure mechanism; 301. Corner unit; 3011. Elastic connecting piece; 3012. Housing; 302. First transmission component; 303. First elongated hole; 304. Second transmission component; 4. Handle; 5. Base; 501. Second elongated hole; 6. Pulley seat; 601. Straight hole; 602. Angled hole; 603. First arc-shaped hole; 7. Pulley; 8. First hinge rod; 801. First guide hole; 802. Second guide... 9. Second hinge rod; 10. Third hinge rod; 11. Fourth hinge rod; 12. First pin; 13. First locking element; 14. Second locking element; 15. Plate hook; 16. Limiting plate; 17. Snap-fit ​​element; 18. Snap-fit ​​seat; 19. Guide element; 191. Guide shaft; 192. Guide wheel; 1921. Upper wheel; 1922. Lower wheel; 20. Second pin; 21. Roller; 22. Connecting plate; 221. Second arc-shaped hole; 23. Third pin. Detailed Implementation

[0017] See Figure 1 , Figure 5 and Figure 11 As shown, a sliding bottom-hung window includes a window frame 2 and a window sash 1. The window sash 1 is provided with a handle 4 and a side pressing mechanism 3 around its perimeter. The top is movably connected to the window frame 2 through the bottom-hung mechanism. The window sash 1 has at least three states: bottom-hung, locked, and sliding.

[0018] Regarding side pressure mechanism 3: See Figure 1 , Figure 2 , Figure 3 and Figure 17As shown, the side pressure mechanism 3 includes a corner joint 301, two sets of first transmission components 302, and two sets of second transmission components 304. In this embodiment, four corner joints 301 are provided, respectively located at the four corners of the window sash 1. The elastic connecting pieces 3011 inside the four corner joints 301 are connected to the handle 4 through the first transmission components 302 and the second transmission components 304 to form a closed transmission structure. The structure and connection method of the corner joints 301 and the handle 4 are existing technologies. The corner joint 301 includes a housing 3012 and an elastic connecting piece 3011 located therein. The housing 3012 of the corner joint 301 is connected to the outer edge of the window sash 1. The elastic connecting piece 3011 is bent and can move along two adjacent corners of the window sash 1 within the housing 3012.

[0019] See Figure 17 As shown, two sets of first transmission components 302 are arranged in the horizontal direction and distributed on the upper and lower sides of the window sash 1. There are elastic connecting pieces 3011 at the upper and lower corners of the window sash 1. Each elastic connecting piece 3011 is initially set at a right angle, meaning its two ends are respectively located on two adjacent edges of the window sash 1. One first transmission component 302 is used to drive and connect the two elastic connecting pieces 3011 above the window sash 1, and the other first transmission component 302 is used to drive and connect the two elastic connecting pieces 3011 below the window sash 1. 11; Two sets of second transmission components 304 are arranged vertically on the left and right sides of the window sash 1. One of the second transmission components 304 is used to connect two elastic connecting pieces 3011 distributed vertically on the same side of the window sash 1 in the vertical direction, and the other second transmission component 304 is used to connect two elastic connecting pieces 3011 distributed vertically on the other side of the window sash 1 in the vertical direction, so that the four elastic connecting pieces 3011, the two sets of first transmission components 302 and the two sets of second transmission components 304 can move in the same direction under the action of the handle 4 (clockwise or counterclockwise transmission around the window sash 1).

[0020] One of the second transmission components 304 is provided with a plate hook 15, and the window frame 2 is provided with a limiting plate 16 that slides with the plate hook 15. The limiting plate 16 has an L-shaped structure and is adapted to the plate hook 15. The plate hook 15 can move downward when the window sash 1 is locked and insert into the limiting plate 16. The plate hook 15 can hook onto the limiting plate 16 in the longitudinal direction. When the window sash 1 is suspended, the plate hook 15 can move upward under the drive of the adjacent second transmission component 304 and disengage from the limiting plate 16, so that the upper part of the window sash 1 can tilt inward.

[0021] To ensure that the plate hook 15 on one side of the window sash 1 can lock or detach from the window frame 2, and that the left and right sides of the window sash 1 are evenly stressed when locked, another second transmission component 304 is connected to the handle 4 and is provided with a snap-fit ​​component 17. The window frame 2 is provided with a snap-fit ​​seat 18 that cooperates with the snap-fit ​​component 17.

[0022] When the window sash 1 is in the locked state, the snap-fit ​​component 17 can move upward under the drive of the second transmission component 304 and snap onto the snap-fit ​​seat 18; when the window sash 1 is in the suspended state, the snap-fit ​​component 17 can move downward and disengage from the snap-fit ​​seat 18. The snap-fit ​​seat 18 is flush with the height of the limiting plate 16, which makes it easy for the window sash 1 to be locked simultaneously in the locked state in the left and right symmetrical positions.

[0023] In this embodiment, one of the second transmission components 304 is provided with two plate hooks 15 distributed vertically, and the limiting plate 16 on the window frame 2 is correspondingly provided. The other second transmission component 304 has two locking parts 17 arranged vertically, and the window frame 2 also has two corresponding locking seats 18, which can lock the window sash 1 in different positions when the window sash 1 is locked.

[0024] Regarding the lower suspension mechanism: The lower suspension mechanism includes a first hinge rod 8, a second hinge rod 9, and a connector. One end of the second hinge rod 9 is provided with a roller 21, which is slidably connected to the window frame 2 and will not fall off the window frame 2. The other end of the second hinge rod 9 is movably connected to the connector, which is located at the top of the window sash 1 and does not interfere with the window frame 2. The first hinge rod 8 is rotatably connected between the corner bracket 301 above the window sash 1 and the second hinge rod 9, and has a folded hole.

[0025] One end of the aforementioned first hinge rod 88 is hinged to the window frame 2 via the third pin 23, and the other end is hinged to the second hinge rod 99 via the first pin 12. The third pin 23 is located near the corner of the window sash 1, and the first pin 12 is located at the 2 / 3 position of the second hinge rod 99, which facilitates the first locking member 13 to drive the first hinge rod 88 to rotate, thereby driving the second hinge rod 99 to rotate. The opening and closing of the first hinge rod 88 and the second hinge rod 99 allows the upper part of the window sash 1 to tilt inward, achieving a downward overhang.

[0026] The housing 3012 of the corner bracket 301 has a first elongated hole 303 along the upper length of the window sash 1. A first locking member 13 is provided on the elastic connecting piece 3011 of the upper corner bracket 301. The first locking member 13 is a short shaft, and its upper part passes through the first elongated hole 303 and the folded hole sequentially from top to bottom. The first locking member 13 is adapted to both the first elongated hole 303 and the folded hole. A second locking member 14 is provided at the lower part of the second hinge rod 9 near the end of the window frame 2. The second locking member 14 can abut against the first locking member 13 to restrict its movement when the first hinge rod 8 and the second hinge rod 9 are folded.

[0027] The second locking member 14 is an isosceles triangle structure. The height of the second locking member 14 is set along the length of the second hinge rod 9, and its apex is close to the side of the roller 21, its base is close to the side of the first pin 12, and the line containing its height is perpendicular to and intersects the axis of the first pin 12.

[0028] Regarding the aforementioned positions of the second locking member 14 and the first locking member 13, in order to facilitate the locking of the window sash 1 when it is locked, one side of the second locking member 14 can be pressed against the first locking member 13 located in the first guide hole 801. The first hinge rod 8 and the second hinge rod 9 are connected by the first pin 12. The outer diameter of the middle part of the first pin 12 is larger than the outer diameter of both ends. The two ends of the first pin 12 are rotatably connected to the first hinge rod 8 and the second hinge rod 9 respectively, so that there is a gap between the upper surface of the first hinge rod 8 and the lower surface of the second hinge rod 9. The gap is used for the contact and locking of the first locking member 13 and the second locking member. The lower surface of the second locking member 14 is located between the upper surface of the first locking member 13 and the upper surface of the first hinge rod 8.

[0029] Regarding the specific structure of the folded hole, the folded hole includes a first guide hole 801 and a second guide hole 802 that are connected. The first guide hole 801 is set along the length direction of the first hinge rod 88. The second guide hole 802 is close to the hinge point of the first hinge rod 8 and the corner device 301. Its end away from the first guide hole 801 extends towards the inside of the window sash 1. The angle between the second guide hole 802 and the first guide hole 801 is an obtuse angle. The first guide hole 801 can coincide with the first elongated hole 303 when the window sash 1 is in a locked or sliding state.

[0030] In one embodiment, the connector is a third hinge rod 10 and a fourth hinge rod 11 that are hinged vertically. One end of the fourth hinge rod 11 is located on the upper part of the corner bracket 301 and on the side away from the first lock 13. The other end of the fourth hinge rod 11 is hinged to the end of the second hinge rod 99 away from the roller 21 through the third hinge rod 10. The third hinge rod 10 and the fourth hinge rod 11 can overlap when the window sash 1 is in a locked or sliding state.

[0031] The aforementioned connector consists of a third hinge rod 10 and a fourth hinge rod 11 stacked on top of each other. During rotation, the third hinge rod 10 and the fourth hinge rod 11 may interfere with each other, and the overall thickness is relatively thick, making it inconvenient to install between the upper edge of the window sash 1 and the window frame 2. Therefore, another structural form of the connector is a connecting plate 22 located above the upper corner bracket 301. A second arc-shaped hole 221 is opened on the plate along the width direction of the window sash 1. The end of the second arc-shaped hole 221 away from the first hinge rod 8 extends towards the inside of the window sash 1, and the end of the second hinge rod 99 away from the roller 21 slides into the second arc-shaped hole 221.

[0032] Regarding the sliding transposition mechanism: A sliding switching mechanism is connected between the corner bracket 301 at the bottom of the window sash 1 and the lower window frame 2. There are two sets of sliding switching mechanisms located on both sides of the bottom of the window sash 1. Each sliding switching mechanism includes a base 5 and a sliding unit. The bottom of the sliding unit is horizontally slidably connected to the guide rail 201 of the window frame 2, and the upper part is vertically slidably connected to the bottom of the base 5. The upper part of the base 5 is connected to the housing 3012 of the adjacent corner bracket 301.

[0033] The base 5 and the upper part of the sliding unit are connected to the elastic connecting piece 3011 of the corner device 301 located at the bottom of the window sash 1 via the guide 19. The upper part of the base 5 is provided with a second elongated hole 501 arranged horizontally, and the upper part of the sliding unit is provided with a reversing hole. The lower part of the guide 19 passes through the first elongated hole 303, the second elongated hole 501 and the reversing hole in sequence. The lateral movement of the guide 19 can drive the base 5 to slide longitudinally.

[0034] The guide member 19 includes a vertically arranged guide shaft 191 and a guide wheel 192 rotatably arranged at the lower end of the guide shaft 191. The outer diameter of the guide shaft 191 is adapted to the width of the first elongated hole 303 of the housing 3012. The guide wheel 192 includes an upper wheel 1921 and a lower wheel 1922 that are coaxial and integrally formed. The outer diameter of the upper wheel 1921 is larger than that of the lower wheel 1922. The outer diameter of the upper wheel 1921 is adapted to the width of the second elongated hole 501, and the outer diameter of the lower wheel 1922 is adapted to the width of the reversing hole. When the guide member 19 slides in the second elongated hole 501 and the reversing hole, the rotatably arranged guide wheel 192 can slide smoothly, reducing wear between the guide member 19 and the base 5 and the sliding seat. The width of the second elongated hole 501 is larger than the width of the first elongated hole 303 and larger than the width of the reversing hole. The outer diameters of the upper wheel 1921 and the lower wheel 1922 are different, which allows the guide wheel 192 to slide stably in the base 5 and the sliding unit.

[0035] The specific structure of the aforementioned sliding unit is as follows: the sliding unit includes a pulley seat 6 and a pulley 7 disposed at its lower part and slidably connected to the guide rail 201. A reversing hole is opened on the upper part of the pulley seat 6 near the second elongated hole 501. The upper part of the pulley seat 6 is longitudinally slidably connected to the base 5 through a second pin 20. The axial direction of the second pin 20 is parallel to the axial direction of the pulley 7. The lower part of the guide member 19 is slidably connected in the reversing hole. Under the lateral pull of the elastic connecting piece, the guide member 19 can slide along its direction in the reversing hole, thereby driving the base 5 to move in the longitudinal direction.

[0036] The width of the inner side of the base 5 along the longitudinal direction is 1-10 mm greater than the width of the outer side of the pulley seat 6 along the longitudinal direction. This makes it easier for the base 5 to move along the longitudinal direction under the lateral movement of the guide 19, thereby driving the window sash 1 to move along the longitudinal direction as a whole, and realizing the locking or sliding function of the window sash 1.

[0037] Regarding the specific structure of the reversing hole, the reversing hole includes a straight hole 601, an oblique hole 602 and a first arc-shaped hole 603 connected in sequence. The first arc-shaped hole 603 is set near the corner of the window sash 1. The length direction of the straight hole 601 is consistent with the length direction of the lower edge of the window sash 1, and the oblique hole 602 is set at the end away from the straight hole 601 and inclined to the outside of the window sash 1.

[0038] When the window sash 1 is locked, the handle 4 rotates downward to a vertical position, and the elastic connecting piece 3011 drives the first locking member 13 to move to the side of the first guide hole 801 away from the second guide hole 802. The first locking member 13 can be tightly locked against one side of the second locking member 14. At the same time, the guide member 19 can slide into the first arc-shaped hole 603 under the drive of the elastic connecting piece 3011. The plate hook 15 moves downward and is inserted into the limiting plate 16. The snap-fit ​​member 17 moves upward under the drive of the second transmission member 304 and snaps into the snap-fit ​​seat 18, thus completing the locking of the window sash 1. When the window sash 1 is in the push-pull sliding state, the handle 4 rotates to the horizontal, and the elastic connecting piece 3011 drives the first locking piece 13 to move to the intersection of the first guide hole 801 and the second guide hole 802; at the same time, the guide piece 19 can slide into the hole near the intersection of the straight hole 601 and the oblique hole 602. In the direction of the push-pull sliding of the window sash, the locking seat 18 does not interfere with the locking piece 17, and the limiting plate 16 does not interfere with the plate hook 15, so that the window sash 1 can be pushed-pull sliding. When the window sash 1 is in the down-hung state, the handle 4 rotates 90° upward from the horizontal state. The first locking member 13 can move to the side of the second guide hole 802 away from the first guide hole 801 under the drive of the elastic connecting piece 3011. At this time, the included angle between the first hinge rod 88 and the second hinge rod 99 is the largest. At the same time, the guide member 19 can slide to the end of the straight hole 601 away from the inclined hole 602. The snap-fit ​​member 17 moves downward to disengage from the snap-fit ​​seat 18. The plate hook 15 moves upward to disengage from the limiting plate 16, which makes it easier for the upper part of the window sash 1 to tilt inward.

Claims

1. A sliding down-hung window, comprising a window frame (2) and a window sash (1), wherein the window sash (1) is provided with a handle (4), and side-pressing mechanisms (3) are provided around its perimeter, and the top is movably connected to the window frame (2) via the down-hung mechanism, characterized in that: The side pressure mechanism (3) includes corner brackets (301) set at the four corners of the window sash (1). The four corner brackets (301) are connected to the handle (4) to form a closed transmission structure. The lower suspension mechanism includes a first hinge rod (8), a second hinge rod (9), and a connector. One end of the second hinge rod (9) is slidably connected to the window frame (2), and the other end is movably connected to the connector. The connector is located at the top of the window sash (1). The first hinge rod (8) is rotatably connected between the corner bracket (301) above the window sash (1) and the second hinge rod (9), and a folded hole is provided on it. The corner bracket includes a housing (3012) and an elastic connecting piece (3011) that can move within the housing (3012). The housing (3012) is connected to the outer edge of the window sash (1), and a first elongated hole (303) is provided on it along the upper length direction of the window sash (1). A first locking piece (13) is provided on the elastic connecting piece (3011) of the upper corner bracket, which passes through the first elongated hole (303) and the folded hole. The folded hole includes a first guide hole (801) and a second guide hole (802) that are connected. The first guide hole (801) is set along the length of the first hinge rod (8). The second guide hole (802) is close to the hinge point between the first hinge rod (8) and the corner bracket (301). The end of the second guide hole (802) away from the first guide hole (801) extends toward the inside of the window sash (1). The first guide hole (801) can coincide with the first long hole (303) when the window sash (1) is in a locked or sliding state. The second hinge rod (9) is provided with a second lock (14) at the lower part near the end of the window frame (2). The second lock (14) can abut against the first lock (13) to restrict its movement when the first hinge rod (8) and the second hinge rod (9) are folded. A sliding mechanism is connected between the corner bracket (301) at the bottom of the window sash (1) and the lower window frame (2). The sliding mechanism includes a base (5) and a sliding unit. The bottom of the sliding unit is horizontally slidably connected to the guide rail (201) of the window frame (2), and the upper part is vertically slidably connected to the bottom of the base (5). The base (5) and the upper part of the sliding unit are connected to the elastic connecting piece (3011) of the corner device (301) at the bottom through the guide (19). The base (5) has a second elongated hole (501) arranged horizontally. The upper part of the sliding unit has a reversing hole. The lower part of the guide (19) passes through the first elongated hole (303), the second elongated hole (501) and the reversing hole in sequence. The lateral movement of the guide (19) can drive the base (5) to slide longitudinally.

2. A sliding down-hung window according to claim 1, characterized in that, The sliding unit includes a pulley seat (6) and a pulley (7) disposed at its lower part and slidably connected to the guide rail (201). The reversing hole is opened on the upper part of the pulley seat (6) near the second long hole (501). The upper part of the pulley seat (6) is longitudinally slidably connected to the base (5) within the base.

3. A sliding down-hung window according to claim 2, characterized in that, The reversing hole includes a straight hole (601), an oblique hole (602) and a first arc-shaped hole (603) connected in sequence. The first arc-shaped hole (603) is set near the corner of the window sash (1). The length direction of the straight hole (601) is consistent with the length direction of the lower edge of the window sash (1), and the oblique hole (602) is set at an angle to the outside of the window sash (1) away from the straight hole (601). When the window sash (1) is in the down-hung state, the first elongated hole (303), the second elongated hole (501), and the straight hole (601) overlap; When the window sash (1) is locked, the center of the first arc-shaped hole (603) is located directly below the first long hole (303) and the second long hole (501).

4. A sliding down-hung window according to claim 1, characterized in that, The side pressure mechanism (3) further includes two sets of first transmission components (302) and two sets of second transmission components (304). The two sets of first transmission components (302) are connected to two adjacent elastic connecting pieces (3011) on the upper and lower sides of the window sash (1) in the horizontal direction, and the two sets of second transmission components (304) are connected to two adjacent elastic connecting pieces (3011) on the left and right sides of the window sash (1) in the vertical direction. One of the second transmission components (304) is provided with a plate hook (15), and the window frame (2) is provided with a limiting plate (16) that slides with the plate hook (15). The plate hook (15) can be inserted into the limiting plate (16) when the window sash is locked.

5. A sliding down-hung window according to claim 4, characterized in that, Another second transmission component is connected to the handle (4) for transmission, and is provided with a snap-fit ​​component (17). The window frame (2) is provided with a snap-fit ​​seat (18) that cooperates with the snap-fit ​​component (17). The snap-fit ​​component (17) can snap into or disengage from the snap-fit ​​seat (18) in the vertical direction, and the snap-fit ​​seat (18) is flush with the height of the limiting plate (16).

6. A sliding down-hung window according to claim 1, characterized in that, The upper surface of the first hinge rod (8) and the lower surface of the second hinge rod (9) have a gap, and the lower surface of the second locking member (14) is located between the upper surface of the first locking member (13) and the upper surface of the first hinge rod (8).

7. A sliding down-hung window according to claim 1, characterized in that, The second hinge rod (9) is provided with a roller (21) at one end, and the roller (21) is slidably connected to the window frame (2); The connecting parts are a third hinge rod (10) and a fourth hinge rod (11) that are hinged vertically. One end of the fourth hinge rod (11) is located on the upper part of the corner bracket (301) and is located on the side away from the first lock (13). The other end of the fourth hinge rod (11) is hinged to the end of the second hinge rod (9) away from the roller (21) through the third hinge rod (10). The third hinge rod (10) and the fourth hinge rod (11) can overlap when the window sash (1) is locked or in a sliding state.

8. A sliding down-hung window according to claim 1, characterized in that, The second hinge rod (9) is provided with a roller (21) at one end, and the roller (21) is slidably connected to the window frame (2); The connector is a connecting plate (22), located on the upper part of the upper corner bracket (301), with a second arc-shaped hole (221) opened on it along the width direction of the window sash (1). The end of the second arc-shaped hole (221) away from the first hinge rod (8) extends toward the inside of the window sash (1), and the end of the second hinge rod (9) away from the roller (21) slides into the second arc-shaped hole (221).

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