A folding sliding guide hinge and sliding window

Abstract

The application provides a folding flat push guide hinge and flat push window, the first supporting arm of the guide hinge is provided with a first gear rack, the second supporting arm is provided with a second gear rack, the first end of the first supporting arm is hinged with one end of a first bottom plate, the first end of the second supporting arm is hinged with the other end of the first bottom plate; the first supporting arm and the second supporting arm cross and are provided with a first synchronous gear at the crossing; the third supporting arm is provided with a third gear rack, the fourth supporting arm is provided with a fourth gear rack, the first end of the third supporting arm is hinged with one end of a second bottom plate, the first end of the fourth supporting arm is hinged with the other end of the second bottom plate; the third supporting arm and the fourth supporting arm cross and are provided with a second synchronous gear at the crossing; the first synchronous gear and the second synchronous gear are driven to rotate and move along the same straight line in the same direction after the first bottom plate or the second bottom plate is subjected to external push-pull force. The application shortens each bottom plate and supporting arm, can meet the requirement of opening distance and is suitable for very narrow flat push window.

Description

Technical Field

[0001] This invention relates to the field of door and window hardware technology, and in particular to a folding sliding guide hinge and a sliding window. Background Technology

[0002] A casement window is a window with casement hinges installed around its four sides, allowing the window sash to open parallel to the normal direction of the window plane. Since the window sash moves outward as a whole after opening, casement windows have the advantages of being good for lighting and ventilation, facilitating smoke exhaust, and creating a neat facade.

[0003] Sliding hinges connect the window frame and sash of a sliding window, and are divided into load-bearing hinges and guide hinges. Load-bearing hinges support the weight of the sash and guide its movement, and are symmetrically installed on the left and right sides of the sliding window; guide hinges guide the sash to move parallel to the normal direction of the window plane, and are usually installed at the top and bottom of the sliding window.

[0004] Most sliding hinge products currently on the market are designed for wider sliding windows with an opening sash width greater than 600mm. These hinges typically feature an X-shaped support arm, which is usually quite long to better meet the required opening distance. However, for sliding windows with narrower (400mm-600mm) or extremely narrow (200mm-400mm) sashes, the aforementioned sliding guide hinges are unsuitable due to the relatively small width of the window frame's mounting area. Therefore, there is an urgent need to design a guide hinge that can be applied to sliding windows with narrow or extremely narrow sashes. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a folding sliding guide hinge and a sliding window to adapt to the window frame width of narrow or extremely narrow sliding windows and to meet the requirements for opening distance.

[0006] To solve the above-mentioned technical problems, the technical solution used in this invention is as follows:

[0007] The present invention provides a folding push-guide hinge, comprising a first support arm, a second support arm, a third support arm, a fourth support arm, and a first base plate and a second base plate that are parallel to each other.

[0008] The first support arm is provided with a first rack, and the second support arm is provided with a second rack. The first end of the first support arm is hinged to one end of the first base plate to form a hinge shaft A, and the first end of the second support arm is hinged to the other end of the first base plate to form a hinge shaft B. The first support arm and the second support arm are placed crosswise, and a first synchronous gear that meshes with both the first rack and the second rack is provided at the intersection.

[0009] The third support arm is provided with a third rack, and the fourth support arm is provided with a fourth rack. The first end of the third support arm is hinged to one end of the second base plate to form a C-hinged shaft, and the first end of the fourth support arm is hinged to the other end of the second base plate to form a D-hinged shaft. The third support arm and the fourth support arm are placed crosswise, and a second synchronous gear is provided at the intersection to mesh with both the third rack and the fourth rack.

[0010] The second end of the first support arm is hinged to the second end of the third support arm, and the second end of the second support arm is hinged to the second end of the fourth support arm. After the first base plate or the second base plate is subjected to an external pushing or pulling force, the first synchronous gear and the second synchronous gear are driven to rotate and move in the same direction along the same straight line. This straight line is perpendicular to the vertical line connecting the A hinge axis and the B hinge axis, as well as the vertical line connecting the C hinge axis and the D hinge axis.

[0011] The rotation of the first synchronizing gear causes the first and second support arms to fold towards the first base plate, and the rotation of the second synchronizing gear causes the third and fourth support arms to fold towards the second base plate, thereby causing the first base plate to translate towards the second base plate, or...

[0012] The rotation of the first synchronous gear causes the first support arm to open with the second support arm, and the rotation of the second synchronous gear causes the third support arm to open with the fourth support arm, thereby driving the first base plate to move away from the second base plate.

[0013] Preferably, the line connecting the projection points of the axes of the first synchronous gear, hinge A, and hinge B on the horizontal plane forms a first isosceles triangle, wherein the base of the first isosceles triangle is the vertical line connecting hinge A and hinge B on the first base plate.

[0014] The line connecting the projection points of the axes of the second synchronous gear, the C hinge shaft, and the D hinge shaft on the horizontal plane forms a second isosceles triangle, wherein the base of the second isosceles triangle is the vertical line connecting the C hinge shaft and the D hinge shaft on the second base plate.

[0015] More preferably, the second end of the first support arm is hinged to the second end of the third support arm to form an E-hinged shaft, and the second end of the second support arm is hinged to the second end of the fourth support arm to form an F-hinged shaft. The line connecting the projection points of the axes of the E-hinged shaft, the F-hinged shaft, the first synchronous gear, and the second synchronous gear on the horizontal plane forms an equilateral parallelogram.

[0016] Preferably, the first support arm is provided with a strip-shaped first through hole, and the first rack is provided along one inner edge of the first through hole; the second support arm is provided with a strip-shaped second through hole, and the second rack is provided along one inner edge of the second through hole.

[0017] The first synchronous gear has a first upper protrusion at one end along the axial direction and a first lower protrusion at the other end along the axial direction. After the first synchronous gear is inserted into the first through hole and the second through hole in sequence, it meshes with the first rack and the second rack located on both sides of it. The first upper protrusion is slidably connected to the first support arm, and the first lower protrusion is slidably connected to the second support arm.

[0018] More preferably, the third support arm is provided with a strip-shaped third through hole, and the third rack is provided along one inner edge of the third through hole; the fourth support arm is provided with a strip-shaped fourth through hole, and the fourth rack is provided along one inner edge of the fourth through hole.

[0019] The second synchronous gear has a second upper protrusion at one end along the axial direction and a second lower protrusion at the other end along the axial direction; after the second synchronous gear is inserted into the third through hole and the fourth through hole in sequence, it meshes with the third rack and the fourth rack located on both sides thereon, and the second upper protrusion is slidably connected to the third support arm, and the second lower protrusion is slidably connected to the fourth support arm.

[0020] Preferably, the first upper protrusion is fitted with a first slider, and the second support arm is provided with a first groove that matches the first slider; the first lower protrusion is fitted with a second slider, and the first support arm is provided with a second groove that matches the second slider; the first slider and the second slider slide in the first groove or the second groove respectively, following the movement of the first synchronous gear.

[0021] More preferably, the second upper protrusion is fitted with a third slider, and the third support arm is provided with a third groove that matches the third slider; the second lower protrusion is fitted with a fourth slider, and the fourth support arm is provided with a fourth groove that matches the fourth slider; the third slider and the fourth slider slide in the third groove or the fourth groove respectively as the second synchronous gear moves.

[0022] More preferably, gear bushings are provided between the first upper protrusion and the first slider, between the first lower protrusion and the second slider, between the second upper protrusion and the third slider, and between the second lower protrusion and the fourth slider.

[0023] More preferably, a fixing cap is provided at the top end of the first upper protrusion and the bottom end of the first lower protrusion to axially fix the first synchronous gear; and / or,

[0024] The second upper protrusion and the second lower protrusion are also respectively provided with the fixing caps to fix the second synchronous gear axially.

[0025] Another object of the present invention is to provide a sliding window, including a window sash and a window frame, and also including the above-mentioned folding sliding guide hinge, wherein the first base plate of the guide hinge is connected to the window frame, and the second base plate of the guide hinge is connected to the window sash.

[0026] Compared with existing technologies, the main advantages of the folding push-guide hinge described in this invention are:

[0027] The guide hinge of this invention comprises intersecting first and second support arms, and intersecting third and fourth support arms. The first ends of the first and second support arms are each hinged to the two ends of the first base plate, and the first ends of the third and fourth support arms are each hinged to the two ends of the second base plate. The second ends of the first and second support arms are hinged to the second ends of the third and fourth support arms, respectively. Therefore, when the first base plate is subjected to an outward pushing or pulling force, it will drive the first ends of the first and second support arms... The end moves, causing the first and second support arms to rotate around hinge axis A and hinge axis B respectively, thereby driving the second end of the third support arm and the second end of the fourth support arm to move, causing the third and fourth support arms to rotate around hinge axis C and hinge axis D respectively, thereby changing the vertical distance between the first base plate and the second base plate, realizing the opening and folding of the guide hinge. At the same time, since each support arm is foldable, the first base plate, the second base plate and each support arm can be shortened to adapt to the installation width of narrow or extremely narrow sliding windows, realizing the goal of shortening the length of each base plate and each support arm, while also meeting the requirements for opening distance;

[0028] By providing a first synchronous gear that meshes with both the first and second racks at the intersection of the first and second support arms, and a second synchronous gear that meshes with both the third and fourth racks at the intersection of the third and fourth support arms, the rotational angular velocities of the first and second support arms relative to the first base plate are made the same, and the rotational angular velocities of the third and fourth support arms relative to the second base plate are also made the same. Furthermore, by ensuring that the first and second synchronous gears move in the same direction along the same straight line, the first base plate remains parallel to the second base plate during movement, thereby enabling the guide hinge to open and fold along the normal direction of the vertical plane.

[0029] Compared with the prior art, the sliding window described in this invention uses the aforementioned folding sliding guide hinge, which has the beneficial effects of the aforementioned folding sliding guide hinge. It can ensure that the window sash opens parallel to the normal direction of the window plane. Moreover, since no structures such as grooves are designed on the first and second base plates, the surfaces of the first and second base plates can be made flat. In this way, dust, dirt and other debris can be prevented from falling in and accumulating, which would prevent the hinge from opening or folding smoothly. It is more convenient to use and has a better user experience. Attached Figure Description

[0030] The above and other objects, features, and advantages of the invention will become clearer through a more detailed description of the preferred embodiments illustrated in the accompanying drawings. The same reference numerals denote the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.

[0031] Figure 1 A top view of a folding push-pull guide hinge in its fully open state, provided in an embodiment of the present invention;

[0032] Figure 2 A three-dimensional structural diagram of a folding push-guide hinge during the folding or opening process provided in an embodiment of the present invention;

[0033] Figure 3 A top view of a folding push-pull guide hinge in its fully folded state, provided in an embodiment of the present invention;

[0034] Figure 4 for Figure 3 The front view;

[0035] Figure 5 for Figure 3 A three-dimensional image;

[0036] Figure 6 An exploded view of the structure of a folding push-pull guide hinge provided in an embodiment of the present invention;

[0037] Figure 7 A schematic diagram of the structure of the first or second synchronous gear provided in an embodiment of the present invention;

[0038] Figure Descriptions: First support arm 1, second support arm 2, third support arm 3, fourth support arm 4, first base plate 5, second base plate 6, first rack 7, second rack 8, third rack 9, fourth rack 10, A hinge shaft 11, B hinge shaft 12, C hinge shaft 13, D hinge shaft 14, first synchronous gear 15, second synchronous gear 16, E hinge shaft 17, F hinge shaft 18, first through hole 19, second through hole 20, third through hole 21, fourth through hole 22, first upper protrusion 23, first lower protrusion 24, second upper protrusion 25, second lower protrusion 26, first slider 27, first slide groove 28, second slider 29, second slide groove 30, third slider 31, third slide groove 32, fourth slider 33, fourth slide groove 34, gear bushing 35, fixing cap 36. Detailed Implementation

[0039] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0040] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used in this invention are for illustrative purposes only.

[0041] As mentioned earlier, the current market demand for the opening distance of casement windows is typically a maximum of 30cm and a minimum of 20cm. Most casement hinge products on the market are designed for wider casement windows with an opening sash width greater than 600mm. The support arm of this type of casement hinge has an X-shaped structure. In order to better meet the opening distance requirements, the support arm is usually long. This makes it difficult to adapt to the installation width of narrow or extremely narrow window frames. Therefore, it is difficult to apply to casement windows with narrow (400mm-600mm) or extremely narrow (200mm-400mm) sash widths. There is an urgent need to design a guide hinge that can be applied to casement windows with narrow or extremely narrow sash widths.

[0042] Therefore, this embodiment provides a foldable push-pull guide hinge, such as... Figures 1 to 6 As shown, it includes a first support arm 1, a second support arm 2, a third support arm 3, a fourth support arm 4, and a first base plate 5 and a second base plate 6 that are parallel to each other.

[0043] The first support arm 1 is provided with a first rack 7, and the second support arm 2 is provided with a second rack 8. The first end of the first support arm 1 is hinged to one end of the first base plate 5 to form a hinge shaft A 11, and the first end of the second support arm 2 is hinged to the other end of the first base plate 5 to form a hinge shaft B 12. The first support arm 1 and the second support arm 2 are placed crosswise, and a first synchronous gear 15 is provided at the intersection to mesh with both the first rack 7 and the second rack 8.

[0044] The third support arm 3 is provided with a third rack 9, and the fourth support arm 4 is provided with a fourth rack 10. The first end of the third support arm 3 is hinged to one end of the second base plate 6 to form a C-hinged shaft 13, and the first end of the fourth support arm 4 is hinged to the other end of the second base plate 6 to form a D-hinged shaft 14. The third support arm 3 and the fourth support arm 4 are placed crosswise, and a second synchronous gear 16 that meshes with both the third rack 9 and the fourth rack 10 is provided at the intersection.

[0045] The second end of the first support arm 1 is hinged to the second end of the third support arm 3, and the second end of the second support arm 2 is hinged to the second end of the fourth support arm 4. The first synchronous gear 15 and the second synchronous gear 16 are driven to rotate and move in the same direction along the same straight line after the first base plate 5 or the second base plate 6 is subjected to an external pushing or pulling force. This straight line is perpendicular to the vertical line connecting the A hinge shaft 11 and the B hinge shaft 12 and the vertical line connecting the C hinge shaft 13 and the D hinge shaft 14.

[0046] The rotation of the first synchronizing gear 15 causes the first support arm 1 and the second support arm 2 to fold towards the first base plate 5, and the rotation of the second synchronizing gear 16 causes the third support arm 3 and the fourth support arm 4 to fold towards the second base plate 6, thereby causing the first base plate 5 to translate towards the second base plate 6, or...

[0047] The rotation of the first synchronous gear 15 causes the first support arm 1 to open with the second support arm 2, and the rotation of the second synchronous gear 16 causes the third support arm 3 to open with the fourth support arm 4, thereby driving the first base plate 5 to move away from the second base plate 6.

[0048] In this embodiment, the guide hinge is configured with intersecting first support arms 1 and 2, and intersecting third support arms 3 and 4. The first ends of the first support arms 1 and 2 are each hinged to the two ends of the first base plate 5, and the first ends of the third support arms 3 and 4 are each hinged to the two ends of the second base plate 6. The second ends of the first support arms 1 and 3 are hinged together, and the second ends of the second support arms 2 and 4 are hinged together. Therefore, when the first base plate 5 is subjected to an outward pushing or pulling force, it will cause the first ends of the first support arms 1 and 2 to move, causing the first support arms 1 and 2 to rotate around hinge axis A 11 and hinge axis B 12 respectively, thereby driving... The second end of the third support arm 3 and the second end of the fourth support arm 4 move, causing the third support arm 3 and the fourth support arm 4 to rotate around the C hinge axis 13 and the D hinge axis 14 respectively. This changes the vertical distance between the first base plate 5 and the second base plate 6, enabling the opening and folding of the guide hinge. Since each support arm is foldable, the first base plate 5, the second base plate 6, and each support arm can be shortened to accommodate narrower or extremely narrow sliding window installation widths, achieving the goal of shortening the length of each base plate and each support arm, while also meeting the requirements for opening distance. It should be noted that, based on the above description, when the second base plate 6 is subjected to an outward pushing or pulling force, those skilled in the art can easily understand that a similar action to the aforementioned process will occur, which will not be elaborated here.

[0049] By providing a first synchronous gear 15 at the intersection of the first support arm 1 and the second support arm 2, simultaneously meshing with the first rack 7 and the second rack 8, and by providing a second synchronous gear 16 at the intersection of the third support arm 3 and the fourth support arm 4, simultaneously meshing with the third rack 9 and the fourth rack 10, the rotational angular velocities of the first support arm 1 and the second support arm 2 relative to the first base plate 5 are made the same, and the rotational angular velocities of the third support arm 3 and the fourth support arm 4 relative to the second base plate 6 are made the same. Furthermore, by ensuring that the first synchronous gear 15 and the second synchronous gear 16 move in the same direction along the same straight line, the first base plate 5 remains parallel to the second base plate 6 during movement, thereby enabling the guide hinge to open and fold along the normal direction of the vertical plane. It is clearly understood that the direction of the aforementioned outward pushing and pulling force is preferably parallel to the plane containing the first base plate 5 or the second base plate 6, and further, perpendicular to the first base plate 5 or the second base plate 6.

[0050] It should be noted that in this embodiment, the minimum width of the first base plate 5 and the second base plate 6 of the sliding guide hinge can reach 200mm, corresponding to a maximum opening distance of 200mm for the guide hinge (i.e., the vertical distance between the first base plate 5 and the second base plate 6 when the guide hinge is fully open). Furthermore, currently, due to limitations in the mold dimensions of existing sliding window frames and sash profiles on the market, the maximum stacking height of the sliding hinge cannot exceed 21mm. However, when the base plate width of the sliding guide hinge for wider sliding windows with a sash width greater than 600mm is reduced, while meeting the design limitations of the stacking height, it often cannot provide sufficient opening distance for the sash to move outward, thus failing to provide sufficient ventilation, airflow, and smoke extraction clearance, or meeting the opening distance requirement but not the stacking height requirement, resulting in a hinge structure that cannot simultaneously meet the requirements for both stacking height and opening distance. Figure 1-5 As shown, in this embodiment, the guide hinge cleverly designs the concave and convex shapes of each base plate and each support arm to achieve foldability. When the guide hinge is in the folded state, the first support arm 1 is located between the first base plate 5 and the second support arm 2, and the third support arm 3 is located between the second base plate 6 and the fourth support arm 4, so that the stacking height does not exceed 21mm, thereby meeting the market requirements for the stacking height of the guide hinge.

[0051] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the lines connecting the projection points of the axes of the first synchronous gear 15, hinge shaft A 11, and hinge shaft B 12 on the horizontal plane form a first isosceles triangle, wherein the base of the first isosceles triangle is the vertical line connecting hinge shaft A 11 and hinge shaft B 12 on the first base plate 5; the lines connecting the projection points of the axes of the second synchronous gear 16, hinge shaft C 13, and hinge shaft D 14 on the horizontal plane form a second isosceles triangle, wherein the base of the second isosceles triangle is the vertical line connecting hinge shaft C 13 and hinge shaft D 14 on the second base plate 6.

[0052] This embodiment utilizes the geometric characteristics of an isosceles triangle. After the first synchronous gear 15 meshes with the first rack 7 and the second rack 8 simultaneously, the first synchronous gear 15 can control the first support arm 1 and the second support arm 2 to rotate at the same angular velocity. This ensures that the line connecting the projection points of the axes of the first synchronous gear 15, hinge shaft A 11, and hinge shaft B 12 on the horizontal plane is an isosceles triangle, thereby ensuring that the first synchronous gear 15 moves along a straight line. Similarly, after the second synchronous gear 16 meshes with the third rack 9 and the fourth rack 10 simultaneously, the second synchronous gear 16 can control the third support arm 3 and the fourth support arm 4 to rotate at the same angular velocity. This ensures that the line connecting the projection points of the axes of the second synchronous gear 16, hinge shaft C 13, and hinge shaft D 14 on the horizontal plane is an isosceles triangle, thereby ensuring that the second synchronous gear 16 moves along a straight line.

[0053] In another preferred embodiment, such as Figure 1 and Figure 2 As shown, the second end of the first support arm 1 is hinged to the second end of the third support arm 3 to form an E-hinged shaft 17, and the second end of the second support arm 2 is hinged to the second end of the fourth support arm 4 to form an F-hinged shaft 18. The lines connecting the projection points of the axes of the four axes—E-hinged shaft 17, F-hinged shaft 18, the first synchronous gear 15, and the second synchronous gear 16—on the horizontal plane form an equilateral parallelogram. This embodiment utilizes the geometric characteristics of an equilateral parallelogram. When the first synchronous gear 15 moves along a straight line, the second ends of the first support arm 1 and the second ends of the second support arm 2 drive the third support arm 3 and the fourth support arm 4 to rotate synchronously, thereby driving the second synchronous gear 16 to move along the same straight line.

[0054] In another preferred embodiment, such as Figures 1 to 2 and Figures 6 to 7 As shown, the first support arm 1 has a strip-shaped first through hole 19, and the first rack 7 is arranged along the inner edge of one side of the first through hole 19; the second support arm 2 has a strip-shaped second through hole 20, and the second rack 8 is arranged along the inner edge of one side of the second through hole 20; the first synchronizing gear 15 has a first upper protrusion 23 arranged axially at one end and a first lower protrusion 24 arranged axially at the other end; the first synchronizing gear 15 is inserted into the first through hole 19 and the second through hole 20 in sequence and meshes with the first rack 7 and the second rack 8 located on both sides thereon, and the first upper protrusion 23 is slidably connected to the first support arm 1, and the first lower protrusion 24 is slidably connected to the second support arm 2. This embodiment provides a structural solution that can ensure that the first synchronizing gear 15 meshes with the first rack 7 and the second rack 8 simultaneously and moves on the first support arm 1 and the second support arm 2.

[0055] Further preferred, such as Figures 1 to 2 and Figures 6 to 7 As shown, the third support arm 3 is provided with a strip-shaped third through hole 21, and the third rack 9 is provided along one inner edge of the third through hole 21; the fourth support arm 4 is provided with a strip-shaped fourth through hole 22, and the fourth rack 10 is provided along one inner edge of the fourth through hole 22.

[0056] The second synchronizing gear 16 has a second upper protrusion 25 axially arranged at one end and a second lower protrusion 26 axially arranged at the other end. After being inserted into the third through hole 21 and the fourth through hole 22 in sequence, the second synchronizing gear 16 meshes with the third rack 9 and the fourth rack 10 located on both sides of it. The second upper protrusion 25 is slidably connected to the third support arm 3, and the second lower protrusion 26 is slidably connected to the fourth support arm 4. This embodiment provides a structural solution that ensures that the second synchronizing gear 16 simultaneously meshes with the third rack 9 and the fourth rack 10 and moves on the third support arm 3 and the fourth support arm 4.

[0057] In another preferred embodiment, such as Figure 1 and Figure 2 As shown, the first upper protrusion 23 is fitted with a first slider 27, and the second support arm 2 is provided with a first groove 28 that matches the first slider 27; the first lower protrusion 24 is fitted with a second slider 29, and the first support arm 1 is provided with a second groove 30 (not shown in the figure) that matches the second slider 29; the first slider 27 and the second slider 29 slide in the first groove 28 or the second groove 30 respectively as the first synchronous gear 15 moves. In this embodiment, the first groove 28 and the second groove 30 are used to restrict the linear sliding of the first slider 27 and the second slider 29, so that the linear sliding of the first slider 27 and the second slider 29 can be used to ensure that the first synchronous gear 15 moves in a straight line, reduce the offset and shaking caused by machining accuracy errors during the meshing connection of the gear and the teeth, and improve the smoothness of the operation when the guide hinge is opened or folded.

[0058] Furthermore, such as Figure 1 and Figure 2 As shown, the second upper protrusion 25 is fitted with a third slider 31, and the third support arm 3 is provided with a third groove 32 that matches the third slider 31; the second lower protrusion 26 is fitted with a fourth slider 33, and the fourth support arm 4 is provided with a fourth groove 34 (not shown in the figure) that matches the fourth slider 33; the third slider 31 and the fourth slider 33 slide in the third groove 32 or the fourth groove 34 respectively as the second synchronous gear 16 moves. Similarly, in this embodiment, the third groove 32 and the fourth groove 34 are used to restrict the linear sliding of the third slider 31 and the fourth slider 33, thereby ensuring that the second synchronous gear 16 moves linearly, reducing the offset and shaking caused by machining accuracy errors during the meshing connection of the gear and the teeth, and improving the smoothness of the guide hinge when it is opened or folded.

[0059] Further preferred, such as Figures 1 to 2 As shown, gear bushings 35 are provided between the first upper protrusion 23 and the first slider 27, between the first lower protrusion 24 and the second slider 29, between the second upper protrusion 25 and the third slider 31, and between the second lower protrusion 26 and the fourth slider 33. By providing gear bushings 35 at both ends of the first synchronous gear 15 or the second synchronous gear 16, the axial perpendicularity of each gear can be improved, ensuring that each gear has the same meshing degree with the two racks it meshes with. On the other hand, it can also reduce the wear of the above-mentioned protrusions.

[0060] In a further preferred embodiment, such as Figure 6 and 7As shown, a fixing cap 36 is provided at the top of the first upper protrusion 23 and the bottom of the first lower protrusion 24 to fix the first synchronous gear 15 axially and prevent the first synchronous gear 15 from moving axially or even loosening; and / or, a fixing cap 36 is also provided at the top of the second upper protrusion 25 and the bottom of the second lower protrusion 26 to fix the second synchronous gear 16 axially and prevent the second synchronous gear 16 from moving axially or even loosening.

[0061] Specifically, such as Figure 6 and 7 As shown, the first upper protrusion 23 and the first lower protrusion 24, or the second upper protrusion 25 and the second lower protrusion 26, are all cylindrical. During assembly, as before, after the first slider 27 and the second slider 29, on which the gear bushing 35 is installed, are respectively installed in the first slide groove 28 and the second slide groove 30, the first upper protrusion 23 and the first lower protrusion 24 on the first synchronous gear 15 are respectively inserted through the corresponding gear bushing 35, and then the top end of the first upper protrusion 23 and the bottom end of the first lower protrusion 24 are respectively formed by stamping. Similarly, after the third slider 31 and the fourth slider 33, on which the gear bushing 35 is installed, are respectively installed in the third slide groove 32 and the fourth slide groove 34, the second upper protrusion 25 and the second lower protrusion 26 on the second synchronous gear 16 are respectively inserted through the corresponding gear bushing 35, and then the top end of the second upper protrusion 25 and the bottom end of the second lower protrusion 26 are respectively formed by stamping. It should be noted that the stamping precision of the fixing cap 36 should ensure that the first synchronous gear 15 and the second synchronous gear 16 can still rotate after the fixing cap 36 is formed.

[0062] This second embodiment provides a sliding window, including a window sash and a window frame, and also includes the aforementioned folding sliding guide hinge. The first base plate 5 of the guide hinge is connected to the window frame, and the second base plate 6 of the guide hinge is connected to the window sash. Since the guide hinge is usually installed at the upper and lower parts of the sliding window, preferably, the guide hinges at the upper and lower parts are both installed at the center position in the width direction of the sliding window.

[0063] Specifically, in terms of material selection, preferably, all the above-mentioned support arms, the first base plate 5 and the second base plate 6 are stainless steel, the first synchronous gear 15 and the second synchronous gear 16 are stainless steel, and all the above-mentioned sliders and gear bushings 35 are brass.

[0064] The sliding window provided in this embodiment uses the above-mentioned folding sliding guide hinge, which has the beneficial effects of the above-mentioned folding sliding guide hinge. It can ensure that the window sash opens parallel to the normal direction of the window plane. Since no structure such as groove is designed on the first base plate 5 and the second base plate 6, the surfaces of the first base plate 5 and the second base plate 6 can be made flat. In this way, during the use of the guide hinge, dust, dirt and other debris can be prevented from falling in and accumulating, which would prevent the hinge from opening or folding smoothly.

[0065] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A folding, flat-push guide hinge, characterized in that: It includes a first support arm, a second support arm, a third support arm, a fourth support arm, and a first base plate and a second base plate that are parallel to each other; The first support arm is provided with a first rack, and the second support arm is provided with a second rack. The first end of the first support arm is hinged to one end of the first base plate to form a hinge shaft A, and the first end of the second support arm is hinged to the other end of the first base plate to form a hinge shaft B. The first support arm and the second support arm are placed crosswise, and a first synchronous gear that meshes with both the first rack and the second rack is provided at the intersection. The third support arm is provided with a third rack, and the fourth support arm is provided with a fourth rack. The first end of the third support arm is hinged to one end of the second base plate to form a C-hinged shaft, and the first end of the fourth support arm is hinged to the other end of the second base plate to form a D-hinged shaft. The third support arm and the fourth support arm are placed crosswise, and a second synchronous gear is provided at the intersection to mesh with both the third rack and the fourth rack. The second end of the first support arm is hinged to the second end of the third support arm, and the second end of the second support arm is hinged to the second end of the fourth support arm. After the first base plate or the second base plate is subjected to an external pushing or pulling force, the first synchronous gear and the second synchronous gear are driven to rotate and move in the same direction along the same straight line. This straight line is perpendicular to the vertical line connecting the A hinge axis and the B hinge axis, as well as the vertical line connecting the C hinge axis and the D hinge axis. The rotation of the first synchronizing gear causes the first and second support arms to fold towards the first base plate, and the rotation of the second synchronizing gear causes the third and fourth support arms to fold towards the second base plate, thereby causing the first base plate to translate towards the second base plate, or... The rotation of the first synchronous gear causes the first support arm to open with the second support arm, and the rotation of the second synchronous gear causes the third support arm to open with the fourth support arm, thereby driving the first base plate to move away from the second base plate.

2. The folding push-pull guide hinge according to claim 1, characterized in that: The lines connecting the projection points of the axes of the first synchronous gear, hinge A, and hinge B on the horizontal plane form a first isosceles triangle, wherein the base of the first isosceles triangle is the vertical line connecting hinge A and hinge B on the first base plate. The line connecting the projection points of the axes of the second synchronous gear, the C hinge shaft, and the D hinge shaft on the horizontal plane forms a second isosceles triangle, wherein the base of the second isosceles triangle is the vertical line connecting the C hinge shaft and the D hinge shaft on the second base plate.

3. A folding push-pull guide hinge according to claim 2, characterized in that: The second end of the first support arm is hinged to the second end of the third support arm to form an E-hinged shaft, and the second end of the second support arm is hinged to the second end of the fourth support arm to form an F-hinged shaft. The lines connecting the projection points of the axes of the E-hinged shaft, the F-hinged shaft, the first synchronous gear, and the second synchronous gear on the horizontal plane form an equilateral parallelogram.

4. A folding push-pull guide hinge according to claim 1, characterized in that: The first support arm is provided with a strip-shaped first through hole, and the first rack is provided along one inner edge of the first through hole; the second support arm is provided with a strip-shaped second through hole, and the second rack is provided along one inner edge of the second through hole. The first synchronous gear has a first upper protrusion at one end along the axial direction and a first lower protrusion at the other end along the axial direction. After the first synchronous gear is inserted into the first through hole and the second through hole in sequence, it meshes with the first rack and the second rack located on both sides of it. The first upper protrusion is slidably connected to the first support arm, and the first lower protrusion is slidably connected to the second support arm.

5. A folding push-pull guide hinge according to claim 4, characterized in that: The third support arm is provided with a strip-shaped third through hole, and the third rack is provided along one inner edge of the third through hole; the fourth support arm is provided with a strip-shaped fourth through hole, and the fourth rack is provided along one inner edge of the fourth through hole. The second synchronous gear has a second upper protrusion at one end along the axial direction and a second lower protrusion at the other end along the axial direction; after the second synchronous gear is inserted into the third through hole and the fourth through hole in sequence, it meshes with the third rack and the fourth rack located on both sides thereon, and the second upper protrusion is slidably connected to the third support arm, and the second lower protrusion is slidably connected to the fourth support arm.

6. A folding push-pull guide hinge according to claim 5, characterized in that: The first upper protrusion is fitted with a first slider, and the second support arm is provided with a first groove that matches the first slider; the first lower protrusion is fitted with a second slider, and the first support arm is provided with a second groove that matches the second slider; the first slider and the second slider slide in the first groove or the second groove respectively, following the movement of the first synchronous gear.

7. A folding push-pull guide hinge according to claim 6, characterized in that: The second upper protrusion is fitted with a third slider, and the third support arm is provided with a third groove that matches the third slider; the second lower protrusion is fitted with a fourth slider, and the fourth support arm is provided with a fourth groove that matches the fourth slider; the third slider and the fourth slider slide in the third groove or the fourth groove respectively as the second synchronous gear moves.

8. A folding push-pull guide hinge according to claim 7, characterized in that: Gear bushings are provided between the first upper protrusion and the first slider, between the first lower protrusion and the second slider, between the second upper protrusion and the third slider, and between the second lower protrusion and the fourth slider.

9. A folding push-pull guide hinge according to claim 8, characterized in that: A fixing cap is provided at the top of the first upper protrusion and the bottom of the first lower protrusion to axially fix the first synchronous gear; and / or, The second upper protrusion and the second lower protrusion are also respectively provided with the fixing caps to fix the second synchronous gear axially.

10. A sliding window, comprising a window sash and a window frame, characterized in that: It also includes a folding push-pull guide hinge according to any one of claims 1 to 9, wherein the first base plate of the guide hinge is connected to the window frame and the second base plate of the guide hinge is connected to the window sash.

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