Lamella stack hinge

Abstract

The application provides a sheet stack hinge, comprising: a sheet stack hinge base disc, which specifically comprises a first base disc and a second base disc stacked in sequence, the first base disc is provided with a containing groove for containing a connecting arm; the connecting arm is connected with the first base disc through an adjusting shaft and the height is adjusted through the adjusting shaft, the two side edges of the first base disc are respectively provided with a first guide groove and a second guide groove, and the two side edges of the second base disc are respectively provided with a first guide plate and a second guide plate for being inlaid in the first guide groove and the second guide groove; and a hinge cup is rotationally connected to one end of the connecting arm. The hinge of the application is assembled by multiple base discs, and the overall structure is relatively thin and occupies a small space.

Description

Technical Field

[0001] This application belongs to the field of hinge technology, and particularly relates to a thin-sheet stacked hinge. Background Technology

[0002] Hinges are widely used in various doors, windows, and storage cabinets. The hinge base serves as the fundamental component connecting to the mounting surface. However, in practical use, existing hinge bases commonly suffer from large structural dimensions and occupy significant space. Oversized hinge bases not only affect the internal space layout but may also interfere with the installation and movement of adjacent components.

[0003] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0004] This application provides a sheet stacked hinge to solve or alleviate one or more technical problems in the prior art.

[0005] The first aspect of this application provides a thin-film stacked hinge chassis, comprising:

[0006] The thin-plate stacked hinge chassis specifically includes:

[0007] A first chassis, the first surface of the first chassis is provided with a receiving groove, and the two sides of the first chassis are respectively provided with a first limiting plate and a second limiting plate. The first limiting plate and the second limiting plate are both located on the second surface of the first chassis and are bent toward each other to form a first guide groove and a second guide groove.

[0008] The second chassis is attached to one side of the first chassis. The second chassis has a first fixing hole and a second fixing hole. Both the first fixing hole and the second fixing hole are strip-shaped holes. The two sides of the second chassis are respectively provided with a first guide plate and a second guide plate. The first guide plate is used to be embedded in the first guide groove, and the second guide plate is used to be embedded in the second guide groove.

[0009] A connecting arm is housed in the receiving groove and is fixedly connected to the first chassis via an adjusting shaft. The two ends of the adjusting shaft are respectively connected to the connecting arm and the first chassis, and the adjusting shaft is used to adjust the lifting height of the connecting arm.

[0010] The hinge cup is rotatably connected to one end of the connecting arm away from the sheet stack hinge base.

[0011] Optionally, the bottom wall of the receiving groove is provided with a first hollow hole, and the connecting arm is provided with a second hollow hole;

[0012] The first hollow hole, the second hollow hole, and the first fixing hole are respectively provided to expose the first fixing hole.

[0013] Optionally, a third perforation is also provided on the first chassis;

[0014] The third perforated hole is provided corresponding to the second fixing hole to expose the second fixing hole.

[0015] Optionally, there are two second fixing holes, both of which protrude from the third perforated hole.

[0016] Optionally, the hinge cup includes a damping component that generates a damping force when the door is closed.

[0017] Optionally, one end of the receiving groove extends to the edge of the first chassis, and the bottom wall of the receiving groove is also provided with a first slot, which communicates with the edge of the first chassis and is used to fix the adjusting shaft.

[0018] Optionally, the sheet-stacked hinge chassis further includes a first adjusting member, which passes through the connecting arm and is screwed to the first chassis. The first adjusting member is used to cause relative movement between the connecting arm and the first chassis in a first direction.

[0019] Optionally, the bottom wall of the receiving groove is further provided with a protruding plate, and the protruding plate is provided with a first threaded hole, which is used to screw the first adjusting member.

[0020] The protruding plate and the inner wall of the receiving groove are used to form a bidirectional clamping of the connecting arm to improve the installation stability of the connecting arm.

[0021] Optionally, the materials of the first chassis and the second chassis include iron.

[0022] Optionally, the first surface of the first chassis is further provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion being close to the two side edges of the receiving groove, respectively;

[0023] The first protrusion and the second protrusion are formed by stamping the first chassis. The height of the first protrusion protruding from the first chassis is not greater than the maximum height that the connecting arm can be raised through the adjusting shaft.

[0024] When the connecting arm is raised by the adjusting shaft, the first protrusion and the second protrusion are used to limit the connecting arm.

[0025] The embodiments of this application employing the above-described technical solution may have the following advantages:

[0026] The thin-plate stacked hinge of this application is assembled from multiple chassis, which interlock with each other, making it easy to install. The overall structure is thin and occupies less space.

[0027] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0028] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0029] Figure 1 A schematic diagram of a sheet stacked hinge provided in an embodiment of this application;

[0030] Figure 2 This is an exploded structural diagram of a sheet-stacked hinge provided in an embodiment of this application;

[0031] Figure 3 This is an exploded structural diagram of a sheet stacked hinge provided in an embodiment of this application from another angle.

[0032] Explanation of reference numerals in the attached figures:

[0033] First base 10; Second base 20; First adjusting component 101; First hollow hole 137; Second hollow hole 47; Third hollow hole 107; Receiving groove 13; First slot 131; Protruding plate 133; First protrusion 14; Second protrusion 15; First guide plate 201; Second guide plate 202; First fixing hole 205; Second fixing hole 206; Adjusting shaft 41; Thin sheet stacked hinge base 100; Connecting arm 40; Hinge cup 200. Detailed Implementation

[0034] Embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings. In the drawings, for clarity, the dimensions of layers, regions, and elements, as well as their relative dimensions, may be exaggerated. Throughout, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0035] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this application, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion. And the discussion of a second element, component, area, layer, or portion does not imply that the first element, component, area, layer, or portion necessarily exists in this application.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] In this application, when numerical intervals (i.e., numerical ranges) are involved, unless otherwise specified, the distribution of selectable numerical values ​​within the numerical interval is considered continuous, and includes the two endpoints of the numerical interval (i.e., the minimum and maximum values), as well as every numerical value between these two endpoints. Unless otherwise specified, when a numerical interval refers only to integers within that numerical interval, it includes the two endpoint integers of the numerical range, as well as every integer between the two endpoints, which is equivalent to directly listing every integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be merged. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all subranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, percentage, ratio, etc. The term "numerical interval" can be broadly included to include percentage intervals, ratio intervals, proportion intervals, etc.

[0039] Hinges are widely used in various doors, windows, and storage cabinets. The hinge base serves as the fundamental component connecting to the mounting surface. However, in practical use, existing hinge bases commonly suffer from large structural dimensions and occupy significant space. Oversized hinge bases not only affect the internal space layout but may also interfere with the installation and movement of adjacent components.

[0040] Based on the above, this application provides a thin-sheet stacked hinge. This reduces the overall space occupied by the hinge chassis. See below for details.

[0041] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. It should be understood that these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0042] Please see Figures 1 to 3 This application provides a sheet-stacked hinge, which includes: a sheet-stacked hinge base 100, a connecting arm 40, and a hinge cup 200. The following is a detailed description:

[0043] The sheet-stacked hinge chassis 100 includes a first chassis 10 and a second chassis 20.

[0044] Specifically, the first surface of the first chassis 10 is provided with a receiving groove 13, and the two side edges of the first chassis 10 are respectively provided with a first limiting plate and a second limiting plate. The first limiting plate and the second limiting plate are both located on the second surface of the first chassis 10 and are bent toward the side that is close to each other to form a first guide groove and a second guide groove.

[0045] The first limiting plate, when bent, can be an L-shaped snap-fit ​​structure to hook onto the first guide plate 201 of the second chassis 20. The first guide groove and the second guide groove are used to limit, guide, and install the second chassis 20. In actual assembly, the second chassis 20 can be directly installed in an insert manner along the direction of the first guide groove and the second guide groove, so that the thin-plate stacked hinge chassis 100 of this application can be assembled quickly and easily.

[0046] The second base 20 is attached to one side of the first base 10. The second base 20 has a first fixing hole 205 and a second fixing hole 206, both of which are strip-shaped holes. A first guide plate 201 and a second guide plate 202 are respectively provided on the two side edges of the second base 20. The first guide plate 201 is used to be embedded in the first guide groove, and the second guide plate 202 is used to be embedded in the second guide groove. The second base 20 can serve as a bottom support, providing enclosure, reinforcement, and compression for the entire base structure. In practical applications, it can also serve as a contact surface with the cabinet. Both the first fixing hole 205 and the second fixing hole 206 are strip-shaped holes. Fasteners (such as screws or bolts) can pass through the first fixing hole 205 and the second fixing hole 206 to fix the second base plate 20 to the cabinet. When it is necessary to adjust the position of the hinge, since both the first fixing hole 205 and the second fixing hole 206 are strip-shaped holes, the fasteners can be loosened first. Then, the thin-plate stacked hinge base plate 100 can be moved along the length direction of the first fixing hole 205 and the second fixing hole 206. After the base plate is moved and adjusted to the appropriate position, the fasteners can be tightened to complete the adjustment of the hinge position.

[0047] The connecting arm 40, also known as a hinge arm, is housed within the receiving groove 13 and is fixedly connected to the first chassis 10 via an adjusting shaft 41. Both ends of the adjusting shaft 41 are connected to the connecting arm 40 and the first chassis 10, respectively. The adjusting shaft 41 is used to adjust the raised height of the connecting arm 40. When the adjusting shaft 41 rotates in a predetermined direction, it extends, thereby raising the connecting arm 40 to adjust the gap between the door and the cabinet. In some cases, the adjusting shaft 41 can also rotate in the opposite direction to the predetermined direction, lowering it and thus lowering the connecting arm 40. The gap between the door and the cabinet can also be adjusted according to actual conditions.

[0048] The hinge cup 200 is rotatably connected to one end of the connecting arm 40 away from the sheet-stacked hinge base 100, and is used for mounting to the door body or door panel. In some embodiments, the hinge cup 200 may be a damping hinge cup 200, thereby providing a cushioning effect during door closing, reducing the impact force when the door closes, avoiding noise and structural damage, and improving service life and user comfort.

[0049] The thin-plate stacked hinge of this application is assembled from multiple chassis, which interlock with each other, making it easy to install. The overall structure is thin and occupies less space.

[0050] In this embodiment, the bottom wall of the receiving groove 13 is provided with a first hollow hole 137, and the connecting arm 40 is provided with a second hollow hole 47. The first hollow hole 137, the second hollow hole 47, and the first fixing hole 205 are correspondingly arranged. The area of ​​the first hollow hole 137 and the second hollow hole 47 is larger than that of the first fixing hole 205, so as to expose the first fixing hole 205. That is, the first hollow hole 137, the second hollow hole 47, and the first fixing hole 205 are continuous with each other. In actual installation, the fastener can be directly passed through the first hollow hole 137, the second hollow hole 47, and the first fixing hole 205 in sequence to be fixedly connected to the cabinet. Thus, the entire thin-plate stacked hinge base 100 can be fixed on the cabinet in the overall assembled state, which is convenient for installation. In addition, the first hollow hole 137 and the second hollow hole 47 both coincide with the connecting arm 40 in the vertical direction, which improves the surface space utilization of the thin-plate stacked hinge chassis 100 and makes the volume of the thin-plate stacked hinge chassis 100 smaller and thinner.

[0051] Specifically, there can be one or more first fixing holes 205, and multiple first fixing holes 205 can be arranged in a parallel and spaced manner. Increasing the number of fixing holes can improve the stability after installation.

[0052] In an optional embodiment, the first chassis 10 is further provided with a third perforated hole 107, which corresponds to the second fixing hole 206. The area of ​​the third perforated hole 107 is larger than the area of ​​the second fixing hole, so as to expose the second fixing hole 206. In actual installation, the fastener can be directly passed through the third perforated hole 107 and the second fixing hole 206 in sequence to be fixedly connected to the cabinet, so that the entire chassis can be fixed to the cabinet in a fully assembled state, which is convenient for installation.

[0053] Specifically, in this embodiment, there are two second fixing holes 206, both of which protrude from the third perforated hole 107. The two second fixing holes 206 can be secured to the cabinet by two independent fasteners passing through them. Simultaneous fixing of the two second fixing holes 206 also improves the stability of the second chassis 20 installation and prevents deflection. The two second fixing holes 206 can be arranged in a parallel, spaced-apart manner. In some embodiments, the number of second fixing holes 206 can also be other, such as three or four.

[0054] In actual use, when it is necessary to adjust the height of the hinge, you can first loosen the fastener, then move the thin stack hinge base 100 along the length direction of the first fixing hole 205 / second fixing hole 206, move the base to the appropriate position, and then tighten the fastener to complete the hinge position adjustment.

[0055] In an optional embodiment, the hinge cup 200 includes a damping component that generates a damping force when the door closes, thereby effectively buffering the unfolding movement of the connecting arm 40 and preventing the door from opening rapidly due to inertia, causing impact, or structural fatigue. Furthermore, the damping component improves the smoothness and control of the opening process, extends the overall service life of the hinge, and is suitable for scenarios involving high-frequency door opening and closing. In this embodiment, the damping component can be installed inside the hinge cup 200, thereby reducing the overall space occupied.

[0056] In this embodiment, one end of the receiving groove 13 extends to the edge of the first chassis 10, and the bottom wall of the receiving groove 13 is also provided with a first slot 131. The first slot 131 is connected to the edge of the first chassis 10 and is used to be fixedly connected to the adjusting shaft 41.

[0057] The receiving slot 13 has an open slot structure, which makes it easy for the adjusting shaft 41 or the connecting arm 40 to be directly inserted into the receiving slot 13 from the side of the chassis. This can reduce positional constraints during the assembly process and improve assembly efficiency.

[0058] Similarly, the first slot 131 is also an open structure, which makes it easy for the adjustment shaft 41 to be directly inserted from the side of the chassis. The first slot 131 provides a precise connection point between the adjustment shaft 41 and the first chassis 10, and also restricts the direction of movement of the adjustment shaft 41, so that it is not easy to deviate when subjected to force.

[0059] In this embodiment, the thin-plate stacked hinge chassis 100 further includes a first adjusting member 101. The first adjusting member 101 passes through the connecting arm 40 and is screwed to the first chassis 10. The first adjusting member 101 may be an eccentric screw. The first adjusting member 101 is used to cause relative movement between the connecting arm 40 and the first chassis 10 in a first direction, thereby adjusting the gap, height, or horizontal position between the door and the cabinet. In some embodiments, manual adjustment can also be achieved through a slotted hole and bolts.

[0060] Furthermore, in this embodiment, the bottom wall of the receiving groove 13 is also provided with a protruding plate 133, and the protruding plate 133 is provided with a first threaded hole (not shown in the figure), which is used to screw into the first adjusting member 101. The height of the protruding plate 133 is higher than the bottom wall of the receiving groove 13, which facilitates contact and installation with the first adjusting member 101. Specifically, the protruding plate 133 can be formed by stamping the bottom wall of the receiving groove 13.

[0061] The inner walls of the protruding plate 133 and the receiving groove 13 can also be used to form a bidirectional clamping of the connecting arm to improve the installation stability of the connecting arm and prevent the connecting arm from shaking during use.

[0062] In an optional embodiment, the first chassis 10 and the second chassis 20 are made of iron. Iron is highly precise in stamping and drilling, and its thermal expansion and contraction helps maintain good coaxiality and fit between the perforated holes and fixing holes of each chassis layer. Furthermore, iron is relatively inexpensive, and its processing technology (such as stamping, cutting, and welding) is mature. It also has a certain degree of plasticity, making it suitable for processing complex structures and enabling large-scale production, thus reducing manufacturing costs.

[0063] Furthermore, in this embodiment, the first surface of the first chassis 10 is also provided with a first protrusion 14 and a second protrusion 15. The first protrusion 14 and the second protrusion 15 are respectively close to the two side edges of the receiving groove 13. The first protrusion 14 and the second protrusion 15 are formed by stamping the first chassis 10. The height of the first protrusion 14 protruding from the first chassis 10 is not greater than the maximum height of the connecting arm 40 raised by the adjusting shaft 41, so as to prevent the protrusion from being too high and affecting the use or installation. Wherein, when the connecting arm 40 is raised by the adjusting shaft 41, the first protrusion 14 and the second protrusion 15 are used to limit the connecting arm 40.

[0064] By providing a receiving groove 13 on the first surface of the first chassis 10, and providing a first protrusion 14 and a second protrusion 15 on both sides of the receiving groove 13, when the connecting arm 40 is lifted by the adjusting shaft 41, the first protrusion 14 and the second protrusion 15 can provide limiting support for both sides of the connecting arm 40, thereby effectively reducing the suspended force area of ​​the connecting arm 40, reducing its force concentration, and improving the stability of the connecting arm 40 in the lifted state, preventing it from breaking due to prolonged suspended force, and effectively extending the service life of the hinge device. At the same time, the first protrusion 14 and the second protrusion 15 can also reduce the shaking and offset of the connecting arm 40 during the adjustment process, improving the reliability and accuracy of the overall hinge structure.

[0065] The first protrusion 14 and the second protrusion 15 are formed by stamping, which simplifies the processing flow, avoids the addition of extra parts, and reduces manufacturing costs. Furthermore, the first protrusion 14 / second protrusion 15 are integrally formed with the first chassis 10, providing higher strength and stability, and making them less prone to loosening or damage. When the connecting arm 40 is raised, the first protrusion 14 and the second protrusion 15 can provide lateral support to the connecting arm 40, reducing the single-point stress on the adjusting shaft 41, effectively distributing the load, extending its service life, and preventing it from deforming or swaying due to stress.

[0066] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are used only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation on this application. The directional terms "inner" and "outer" refer to the inside or outside relative to the outline of the component itself. For example, if a device in the drawings is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0067] It should also be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this application refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0068] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0069] It should also be noted that the above are merely preferred embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A sheet-stacked hinge, characterized in that, include: The thin-plate stacked hinge chassis specifically includes: A first chassis, the first surface of the first chassis is provided with a receiving groove, and the two sides of the first chassis are respectively provided with a first limiting plate and a second limiting plate. The first limiting plate and the second limiting plate are both located on the second surface of the first chassis and are bent toward each other to form a first guide groove and a second guide groove. The second chassis is attached to one side of the first chassis. The second chassis has a first fixing hole and a second fixing hole. Both the first fixing hole and the second fixing hole are strip-shaped holes. The two sides of the second chassis are respectively provided with a first guide plate and a second guide plate. The first guide plate is used to be embedded in the first guide groove, and the second guide plate is used to be embedded in the second guide groove. A connecting arm is housed in the receiving groove and is fixedly connected to the first chassis via an adjusting shaft. The two ends of the adjusting shaft are respectively connected to the connecting arm and the first chassis, and the adjusting shaft is used to adjust the lifting height of the connecting arm. The hinge cup is rotatably connected to one end of the connecting arm away from the sheet stack hinge base.

2. The sheet-stacking hinge according to claim 1, characterized in that, The bottom wall of the receiving groove is provided with a first hollow hole, and the connecting arm is provided with a second hollow hole; The first hollow hole, the second hollow hole, and the first fixing hole are respectively provided to expose the first fixing hole.

3. The sheet-stacking hinge according to claim 1, characterized in that, The first chassis also has a third perforated hole; The third perforated hole is provided corresponding to the second fixing hole to expose the second fixing hole.

4. The sheet-stacking hinge according to claim 3, characterized in that, There are two second fixing holes, both of which protrude from the third hollow hole.

5. The sheet-stacking hinge according to claim 1, characterized in that, The hinge cup includes a damping component that generates a damping force when the door is closed.

6. The sheet-stacking hinge according to claim 1, characterized in that, One end of the receiving groove extends to the edge of the first chassis, and the bottom wall of the receiving groove is also provided with a first slot, which is connected to the edge of the first chassis and is used to fix the adjusting shaft.

7. The sheet-stacked hinge according to claim 1, characterized in that, The sheet-stacked hinge chassis further includes a first adjusting member, which passes through the connecting arm and is screwed to the first chassis. The first adjusting member is used to cause relative movement between the connecting arm and the first chassis in a first direction.

8. The sheet-stacked hinge according to claim 7, characterized in that, The bottom wall of the receiving groove is also provided with a protruding plate, and the protruding plate is provided with a first threaded hole, which is used to screw the first adjusting member. The protruding plate and the inner wall of the receiving groove are used to form a bidirectional clamping of the connecting arm to improve the installation stability of the connecting arm.

9. The sheet-stacked hinge according to any one of claims 1 to 8, characterized in that, The materials of the first chassis and the second chassis include iron.

10. The sheet-stacking hinge according to claim 9, characterized in that, The first surface of the first chassis is further provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion being close to the two side edges of the receiving groove, respectively; The first protrusion and the second protrusion are formed by stamping the first chassis. The height of the first protrusion protruding from the first chassis is not greater than the maximum height that the connecting arm can be raised through the adjusting shaft. When the connecting arm is raised by the adjusting shaft, the first protrusion and the second protrusion are used to limit the connecting arm.

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