A graded positioning hinge

Abstract

The present invention discloses a graded positioning hinge that is connected to a first target mounting object and a second target mounting object for a door or window. The hinge comprises an upper hinge assembly and a graded positioning device. One end of the upper hinge assembly is connected to the top of the first target mounting object, and the other end is connected to the graded positioning device. The graded positioning device is positioned above the second target mounting object and is used to control the opening distance of the upper hinge assembly in the inner underhang state. The present invention controls the opening distance of the upper hinge assembly through the graded positioning device, thereby controlling the opening distance of the inner underhang of the door or window to different degrees, thereby meeting different ventilation requirements.

Description

Technical Field

[0001] The invention relates to the field of door and window hardware, and in particular to a graded positioning hinge. Background Art

[0002] The hinges of existing inward-opening bottom-hung doors and windows mostly have bottom-hung opening structures that can only be opened to a fixed distance, resulting in a single opening distance for the doors and windows, which cannot meet the needs of different ventilation volumes. Although there are a few structures on the market that can control the opening distance of doors and windows, their structures can only be implemented in the form of added accessories and cannot be implemented on the hinges, resulting in increased cost of use. Moreover, the opening distance they control is very small and cannot meet the ventilation needs. If different opening distances need to be controlled, additional manual operation steps are required. Because the added accessories are installed above the window sash, it is not convenient to use when the sash is made higher. Summary of the Invention

[0003] The purpose of the present invention is to provide a graded positioning hinge, aiming to solve the problem that the structure of the existing inner hanging hinge of doors and windows has a single opening distance when the inner hanging door and window is opened.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: providing a graded positioning hinge, connected to the first target installation object and the second target installation object of the door and window, including an upper hinge assembly and a graded positioning device, one end of the upper hinge assembly is connected to the top of the first target installation object, and the other end is connected to the graded positioning device, the graded positioning device is arranged above the second target installation object, and is used to control the opening distance of the upper hinge assembly in the inner downward hanging state.

[0005] Furthermore, the graded positioning device includes a base and a first positioning member, the base is arranged on the second target installation object, the base is provided with a first slide groove and a first guide groove, one end of the first positioning member is hinged to the upper hinge assembly and can be slidably arranged in the first slide groove, the other end of the first positioning member is provided with a first guide portion, the first guide portion can be slidably connected in the first guide groove, and a plurality of positioning portions are arranged in sequence along the guide direction in the first guide groove.

[0006] Furthermore, the multiple positioning portions include a first positioning groove, a second positioning groove, a third positioning groove and a fourth positioning groove, a partition portion is set between the first positioning groove and the third positioning groove, the second positioning groove is set relative to the partition portion, and the fourth positioning groove is located on the side of the second positioning groove away from the partition portion, and the first positioning groove, the second positioning groove, the third positioning groove and the fourth positioning groove are sequentially provided with a circulating first guide channel at the beginning and the end.

[0007] Furthermore, the first positioning slot and the third positioning slot have the same opening direction, both facing the second positioning slot, and the second positioning slot and the fourth positioning slot both open towards the first positioning slot.

[0008] Further, the first sliding groove is located on a side of the first guide groove close to the partition, or the first sliding groove is located on a side of the first guide groove away from the partition.

[0009] Furthermore, the upper hinge assembly includes a base plate and a first connecting rod assembly, the base plate is arranged on the first target installation object, one end of the first connecting rod assembly is hinged to the base plate, and the other end is hinged to the graded positioning device, and the first connecting rod assembly can be unfolded or folded.

[0010] Furthermore, the first link assembly includes a first link, a second link, a third link and a fourth link, one end of the first link and the second link are respectively hinged to different positions on the base plate, the other ends of the first link and the second link are respectively hinged to different positions on one end of the third link, and the middle part of the first link is hinged to the middle part of the second link, the other end of the third link is hinged to one end of the graded positioning device, one end of the fourth link is hinged to the third link, and the other end is hinged to the graded positioning device.

[0011] Furthermore, the upper hinge assembly includes a base plate and a second connecting rod assembly, the base plate is arranged on the first target installation object, one end of the second connecting rod assembly is hinged to the base plate, and the other end is hinged to the graded positioning device, the second connecting rod assembly can be unfolded or folded, and a second guide groove is provided at one end of the second connecting rod assembly, and a plurality of positioning parts are sequentially provided on the second guide groove.

[0012] Furthermore, the graded positioning device includes a base and a second positioning member, the base is arranged on the second target installation object, the base is provided with a second slide groove, the second positioning member can be slidably arranged in the second slide groove, and the second positioning member is provided with a second guide portion that cooperates with the second guide groove.

[0013] Furthermore, the second connecting rod assembly includes a guide connecting rod, the second guide groove is arranged on the guide connecting rod, the multiple positioning parts include a fifth positioning groove and a sixth positioning groove, the fifth positioning groove is arranged through the end of the guide connecting rod, and the sixth positioning groove is away from the end of the guide connecting rod, and a second guide channel is arranged between the fifth positioning groove and the sixth positioning groove.

[0014] An embodiment of the present invention provides a graded positioning hinge that is connected to a first target mounting surface and a second target mounting surface of a door or window. The hinge comprises an upper hinge assembly and a graded positioning device. One end of the upper hinge assembly is connected to the first target mounting surface, and the other end is connected to the graded positioning device. The graded positioning device is disposed on the second target mounting surface and is used to control the opening distance of the upper hinge assembly in the inner underhang state. By controlling the opening distance of the upper hinge assembly through the graded positioning device, the present invention controls the opening distance of the inner underhang of the door or window to different opening distances, thereby meeting different ventilation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the door and window structure in the state of internal downward hanging and opening a small distance provided by the first embodiment of the present invention;

[0017] Figure 2 Schematic diagram of the door and window structure in the state of inner downward hanging and opening a large distance provided by the first embodiment of the present invention;

[0018] Figure 3 A schematic diagram of a hierarchical positioning hinge structure of a door or window provided by the first embodiment of the present invention in an open state with a small downward hanging distance;

[0019] Figure 4 A schematic diagram of a hierarchical positioning hinge structure of a door or window provided by the first embodiment of the present invention in a state of large downward hanging and opening;

[0020] Figure 5 A schematic structural diagram of an upper hinge assembly provided in a second embodiment of the present invention;

[0021] Figure 6 A schematic structural diagram of a hierarchical positioning device provided in a second embodiment of the present invention;

[0022] Figure 7 A schematic structural diagram of a base provided in a second embodiment of the present invention;

[0023] Figure 8 An exploded view of a base provided in accordance with a second embodiment of the present invention;

[0024] Figure 9 A schematic structural diagram of a graded positioning hinge provided in a third embodiment of the present invention;

[0025] Figure 10 A schematic structural diagram of a hierarchical positioning device provided in a third embodiment of the present invention;

[0026] Figure 11 A schematic structural diagram of an upper hinge assembly provided in a third embodiment of the present invention;

[0027] Figure 12 A partial view of a third embodiment of the present invention;

[0028] Figure 13 This is an exploded view of the hierarchical positioning device provided in the third embodiment of the present invention.

[0029] Description of the symbols in the figure:

[0030] 1. The first target installation object;

[0031] 2. Second target installation;

[0032] 3. Upper hinge assembly; 31. Bottom plate; 32. First connecting rod; 33. Second connecting rod; 34. Third connecting rod; 35. Fourth connecting rod; 36. Fifth connecting rod; 37. Sixth connecting rod; 38. Second guide groove; 381. Fifth positioning groove; 382. Sixth positioning groove; 39. Second guide channel;

[0033] 4. Grading positioning device; 41. First base; 42. First positioning member; 421. First guide portion; 43. First slide groove; 44. First guide groove; 441. First positioning groove; 442. Second positioning groove; 443. Third positioning groove; 444. Fourth positioning groove; 445. Partition; 45. First guide channel; 46. Second base; 47. Second positioning member; 48. Second slide groove; 49. Second guide portion; 410. Control member. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0036] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0038] Combine Figure 1-2 As shown, an embodiment of the present invention provides a graded positioning hinge, which is connected to a first target installation object 1 and a second target installation object 2 of a door or window, and includes an upper hinge assembly 3 and a graded positioning device 4. One end of the upper hinge assembly 3 is connected to the top of the first target installation object 1, and the other end is connected to the graded positioning device 4. The graded positioning device 4 is arranged above the second target installation object 2 and is used to control the opening distance of the upper hinge assembly 3.

[0039] In the embodiment of the present invention, the door and window handle can adjust the door and window to open horizontally or inwardly downwardly. When the door and window are opened, the first target installation object 1 and the second target installation object 2 are relatively far apart. The graded positioning hinge is mainly used for the inward downwardly downward opening of the door and window. The existing inward downwardly downwardly inclined door and window have a short opening distance and cannot be adjusted. In this embodiment, a graded positioning device 4 is added to the second target installation object to adjust the angle between the upper hinge assembly 3 provided on the first target installation object 1 and the second target installation object 2, thereby adjusting the opening distance between the first target installation object 1 and the second target installation object 2. Figure 1 and Figure 2 As shown, Figure 1 The included angle between the middle upper hinge assembly 3 and the second target installation object 2 is small, and the opening distance is small. Figure 2 The included angle between the middle and upper hinge assembly 3 and the second target installation object 2 is large, and the opening distance is large, so that the opening distance of the door and window is no longer single, meeting different ventilation needs.

[0040] Combine Figure 3-4 As shown, Figure 3 This is a schematic diagram of the graded positioning hinge structure when the door or window is opened with a small downward hanging distance. Figure 4 This is a schematic diagram of the graded positioning hinge structure when the door or window is opened with a large downward hanging distance. Figure 4 The included angle between the third connecting rod 34 of the middle upper hinge assembly 3 and the graded positioning device 4 is greater than Figure 3 The included angle between the third connecting rod 34 of the middle upper hinge assembly 3 and the graded positioning device 4.

[0041] Combine Figure 5-8As shown, in one embodiment, the graded positioning device 4 includes a first base 41 and a first positioning member 42. The first base 41 is arranged on the second target installation object 2. The first base 41 is provided with a first slide groove 43 and a first guide groove 44. One end of the first positioning member 42 is hinged to the hinge assembly 3 and can be slidably arranged in the first slide groove 43. The other end of the first positioning member 42 is provided with a first guide portion 421. The first guide portion 421 can be slidably connected in the first guide groove 44. A plurality of positioning portions are sequentially arranged in the first guide groove 44 along the guide direction.

[0042] In this embodiment, one end of the first positioning member 42 is hinged to the upper hinge assembly 3 and is slidably arranged in the first slide groove 43, that is, the movement of the first positioning member 42 can drive the upper hinge assembly 3 to move, thereby adjusting the angle between the upper hinge assembly 3 and the second target installation object 2, and the first guide portion 421 is arranged at the other end of the first positioning member 42 and can slide between multiple positioning portions. Different positioning portions will cause the first positioning member 42 to drive the upper hinge assembly 3 to move to different degrees, so that the angle between the upper hinge assembly 3 and the second target installation object 2 is different, thereby making the lower hanging in the door and window have different opening distances when opening. The position of the positioning portion is fixed, and the position of the first guide portion 421 moving to different positioning portions represents different fixed angles between the upper hinge assembly 3 and the second target installation object 2, that is, the fixed position of the opening of the lower hanging in the door and window, thereby realizing the graded opening of the lower hanging in the door and window.

[0043] Specifically, the graded positioning device 4 further includes a control member 410, which is disposed on the first base 41 and is used to control the movement of the first positioning member 42. The control member 410 is connected to the door or window handle. When the door or window handle is turned, the control member 410 drives the first positioning member 42 to move, thereby adjusting the upper hinge assembly 3. More specifically, when the door or window handle is turned to the first position, the door or window can be opened with an inward downward hang. When the door or window handle is turned to the second position, the distance of the inward downward hang opening of the door or window increases.

[0044] Furthermore, the multiple positioning portions include a first positioning groove 441, a second positioning groove 442, a third positioning groove 443 and a fourth positioning groove 444, a partition 445 is arranged between the first positioning groove 441 and the third positioning groove 443, the second positioning groove 442 and the partition 445 are arranged relative to each other, and the fourth positioning groove 444 is located on the side of the second positioning groove 442 away from the partition 445, and the first positioning groove 441, the second positioning groove 442, the third positioning groove 443 and the fourth positioning groove 444 are sequentially provided with a circulating first guide channel 45 at the beginning and end.

[0045] In this embodiment, when the first guide portion 421 is initially located in the first positioning groove 441, in this state, the angle between the upper hinge assembly 3 and the second target installation object 2 is zero, and the first target installation object 1 and the second target installation object 2 are in contact, that is, the door and window are in a closed state; a partition 445 is provided between the first positioning groove 441 and the third positioning groove 443, and the second positioning groove 442 is provided relative to the partition 445, that is, the second positioning groove 442 is located between the first positioning groove 441 and the third positioning groove 443 in the first guide channel 45. When the first guide portion 421 arrives at the second positioning groove 442 along the first guide channel 45, the angle between the upper hinge assembly 3 and the second target installation object 2 becomes larger, and the second target installation object 2 moves away from the first target installation object 1, and the door and window are in a state of being opened with a small distance of inner hanging; when the first guide portion 421 moves along the first guide channel 45 reaches the third positioning groove 443, the angle between the upper hinge assembly 3 and the second target installation object 2 becomes smaller, the second target installation object 2 is re-fitted close to the first target installation object 1, and the door and window return to the closed state; the first guide channel 45 between the third positioning groove 443 and the fourth positioning groove 444 is longer than the distance between the first positioning groove 441 and the second positioning groove 442, and this part of the first guide channel 45 is arc-shaped, which is convenient for the long-distance sliding of the first guide part 421. When the first guide part 421 reaches the fourth positioning groove 444 along the first guide channel 45, the angle between the upper hinge assembly 3 and the second target installation object 2 becomes larger, and the angle is larger than the angle when the first guide part 421 is located in the second positioning groove 442, so that the distance between the second target installation object 2 and the first target installation object 1 is larger, thereby realizing different opening distances for the downward hanging opening in the door and window.

[0046] Specifically, the first positioning groove 441 and the third positioning groove 443 have the same opening direction, both facing the second positioning groove 442, and the second positioning groove 442 and the fourth positioning groove 444 both open toward the first positioning groove 441. The first guide portion 421 passes through the first positioning groove 441, the second positioning groove 442, the third positioning groove 443 and the fourth positioning groove 444 in sequence along the first guide channel 45, and finally returns to the first positioning groove 441. The opening of each positioning groove is inclined close to the side of the previous positioning groove to facilitate the first guide portion 421 to enter the positioning groove.

[0047] Specifically, the first slide groove 43 is located on a side of the first guide groove 44 close to the partition 445, or the first slide groove 43 is located on a side of the first guide groove 44 away from the partition 445. In this embodiment, one end of the first positioning member 42 slides in the first slide groove 43, and the other end is provided with a first guide portion 421. The first slide groove 43 is located on a side of the first guide groove 44 close to or away from the partition 445, that is, the first slide groove 43 and the first guide groove 44 are collinear, facilitating the sliding of the first guide portion 421 in the first guide groove 44.

[0048] Furthermore, the upper hinge assembly 3 includes a base plate 31 and a first link assembly. The base plate 31 is provided on the first target installation object 1. One end of the first link assembly is hinged to the base plate 31, and the other end is hinged to the graded positioning device 4. The first link assembly can be unfolded or folded. Specifically, the first link assembly includes a first link 32, a second link 33, a third link 34, and a fourth link 35. The base plate 31 is provided on the first target installation object 1. One end of the first link 32 and the second link 33 are respectively hinged to different positions on the base plate 31. The other ends of the first link 32 and the second link 33 are respectively hinged to different positions on one end of the third link 34. The middle portion of the first link 32 is hinged to the middle portion of the second link 33. The other end of the third link 34 is hinged to one end of the graded positioning device 4. The fourth link 35 is hinged to the third link 34 at one end, and the other end is hinged to the first base 41.

[0049] The third link 34 is hinged at one end of the graded positioning device 4, and the third link 34 is hinged at one end of the graded positioning device 4. Specifically, the third link 34 is hinged at one end of the first positioning member 42. The movement of the first positioning member 42 will drive the third link 34 to move, thereby driving the entire upper hinge assembly 3 to open, realizing the inner lower hanging opening of the door and window, and the other end of the first positioning member 42 is provided with multiple positioning parts, which can realize different opening distances of the inner lower hanging opening of the door and window. One end of the fourth link 35 is hinged on the third link 34, and the other end is hinged on the first base 41. Driven by the first positioning member 42, the distance between the third link 34 and the two ends of the fourth link 35 is shortened, which helps to assist the inner lower hanging opening of the door and window to a larger distance, and increases the stability of the connection between the second target installation object 2 and the first target installation object 1, and avoids the loosening of the third link 34 causing the door and window to detach.

[0050] Combine Figure 9-13As shown, the upper hinge assembly 3 includes a base plate 31 and a second connecting rod assembly. The base plate 31 is arranged on the first target installation object 1. One end of the second connecting rod assembly is hinged to the base plate 31, and the other end is hinged to the graded positioning device 4. The second connecting rod assembly can be unfolded or folded. A second guide groove 38 is provided at one end of the second connecting rod assembly, and a plurality of positioning parts are sequentially provided on the second guide groove 38. Specifically, the second link assembly includes a first link 32, a second link 33, a fifth link 36 and a sixth link 37. The base plate 31 is set on the first target installation object. One end of the first link 32 and the second link 33 are respectively hinged at different positions on the base plate 31, and the other ends of the first link 32 and the second link 33 are respectively hinged at different positions at one end of the fifth link 36, and the middle part of the first link 32 is hinged to the middle part of the second link 33, and the other end of the fifth link 36 is hinged to the graded positioning device 4. One end of the sixth link 37 is hinged to the fifth link 36, and the other end of the sixth link 37 is provided with a second guide groove 38, and a plurality of positioning parts are sequentially provided on the second guide groove 38.

[0051] In this embodiment, multiple positioning parts are arranged on the sixth link 37, the graded positioning device 4 is hinged to the fifth link 36, and the fifth link 36 is hinged to the sixth link 37. That is, the graded positioning device 4 controls the movement of the fifth link 36 while reducing the distance between the two ends of the fifth link 36 and the sixth link 37, so that the upper hinge assembly 3 is opened more completely, thereby realizing different opening distances of the lower hanging opening in the door and window.

[0052] Furthermore, the grading positioning device 4 includes a second base 46 and a second positioning member 47. The second base 46 is arranged on the second target installation object 2. The second base 46 is provided with a second slide groove 48. The second positioning member 47 can be slidably arranged in the second slide groove 48. The second positioning member 47 is provided with a second guide portion 49 that cooperates with the second guide groove 38.

[0053] In this embodiment, the second positioning member 47 is slidably arranged in the second sliding groove 48, and one end of the second positioning member 47 is provided with a second guide portion 49 that can slide in the second guide groove 38. When the second guide portion 49 slides to different positioning portion positions, the fifth connecting rod 36 is adjusted to move to different distances from the sixth connecting rod 37, thereby making the door and window have different opening distances when the lower hanging is opened. Figure 5-8 In the embodiment, the second slide groove 48 is provided on the upper hinge assembly 3, that is, the positioning portion is provided on the upper hinge assembly 3, which can more quickly adjust the different opening distances of the lower hanging of the door and window. However, since the sixth connecting rod 37 is also in a moving state, the adjustment effect is not as good as Figure 6-9 The embodiment in this paper is accurate.

[0054] Specifically, the second connecting rod assembly includes a guide connecting rod, a second guide groove 38 is provided on the guide connecting rod, and a plurality of positioning portions include a fifth positioning groove 381 and a sixth positioning groove 382. The fifth positioning groove 381 is provided through the end of the guide connecting rod, and the sixth positioning groove 382 is provided away from the end of the guide connecting rod. The fifth positioning groove 381 and the sixth positioning groove 382 are provided with a second guide channel 39. More specifically, the guide connecting rod is the sixth connecting rod 37.

[0055] In this embodiment, the second guide portion 49 moves from the fifth positioning slot 381 to the sixth positioning slot 382, ​​thereby reducing the distance between the ends of the fifth link 36 and the sixth link 37, thereby increasing the opening distance of the door or window when the door or window is opened downwardly. Specifically, the positioning portion can be provided with more positioning slots, allowing the door or window to be opened in multiple stages.

[0056] Specifically, a plurality of intermediate connecting rods (not shown) are provided between the connecting rods connected by hinges in the upper hinge assembly 3 according to their heights, thereby ensuring the smooth rotation of the hinged connecting rods.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A hierarchical positioning hinge connected to a first target installation object and a second target installation object of a door or window, characterized in that: The upper hinge assembly comprises an upper hinge assembly and a graded positioning device, wherein one end of the upper hinge assembly is connected to the upper portion of the first target installation object, and the other end is connected to the graded positioning device, and the graded positioning device is arranged above the second target installation object and is used to control the opening distance of the upper hinge assembly in the inner downward hanging state; The hierarchical positioning device includes a base and a first positioning member, the base is arranged on the second target installation object, the base is provided with a first slide groove and a first guide groove, one end of the first positioning member is hinged to the upper hinge assembly and can be slidably arranged in the first slide groove, the other end of the first positioning member is provided with a first guide portion, the first guide portion can be slidably connected in the first guide groove, and a plurality of positioning portions are arranged in sequence along the guide direction in the first guide groove.

2. The hierarchical positioning hinge according to claim 1, characterized in that: The multiple positioning portions include a first positioning groove, a second positioning groove, a third positioning groove and a fourth positioning groove. A partition is set between the first positioning groove and the third positioning groove. The second positioning groove is set relative to the partition. The fourth positioning groove is located on the side of the second positioning groove away from the partition. The first positioning groove, the second positioning groove, the third positioning groove and the fourth positioning groove are sequentially provided with a circulating first guide channel at the beginning and the end.

3. The hierarchical positioning hinge according to claim 2, characterized in that: The first positioning groove and the third positioning groove have the same opening direction, both facing the second positioning groove, and the second positioning groove and the fourth positioning groove both open towards the first positioning groove.

4. The hierarchical positioning hinge according to claim 2, characterized in that: The first sliding groove is located on a side of the first guiding groove close to the partition, or the first sliding groove is located on a side of the first guiding groove away from the partition.

5. The hierarchical positioning hinge according to claim 1, characterized in that: The upper hinge assembly includes a base plate and a first connecting rod assembly. The base plate is arranged on the first target installation object. One end of the first connecting rod assembly is hinged to the base plate, and the other end is hinged to the graded positioning device. The first connecting rod assembly can be unfolded or folded.

6. The hierarchical positioning hinge according to claim 5, characterized in that: The first link assembly includes a first link, a second link, a third link and a fourth link. One end of the first link and the second link are respectively hinged to different positions on the base plate, the other ends of the first link and the second link are respectively hinged to different positions on one end of the third link, and the middle part of the first link is hinged to the middle part of the second link, the other end of the third link is hinged to one end of the graded positioning device, one end of the fourth link is hinged to the third link, and the other end is hinged to the graded positioning device.

7. The hierarchical positioning hinge according to claim 1, characterized in that: The upper hinge assembly includes a base plate and a second connecting rod assembly, the base plate is set on the first target installation object, one end of the second connecting rod assembly is hinged to the base plate, and the other end is hinged to the graded positioning device, the second connecting rod assembly can be unfolded or folded, and one end of the second connecting rod assembly is provided with a second guide groove, and a plurality of positioning parts are sequentially provided on the second guide groove.

8. The step-by-step positioning hinge according to claim 7, characterized in that: The hierarchical positioning device includes a base and a second positioning member, the base is arranged on the second target installation object, the base is provided with a second slide groove, the second positioning member can be slidably arranged in the second slide groove, and the second positioning member is provided with a second guide portion that cooperates with the second guide groove.

9. The step-by-step positioning hinge according to claim 8, characterized in that: The second connecting rod assembly includes a guide connecting rod, the second guide groove is arranged on the guide connecting rod, the multiple positioning parts include a fifth positioning groove and a sixth positioning groove, the fifth positioning groove is arranged through the end of the guide connecting rod, and the sixth positioning groove is away from the end of the guide connecting rod, and a second guide channel is arranged between the fifth positioning groove and the sixth positioning groove.

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