High-stability hinge

Abstract

A high-stability hinge comprises a hinge assembly and a connecting assembly. The hinge assembly comprises a fixed hinge piece and a movable hinge piece. The connecting assembly comprises a first linkage block and a second linkage block of which the middle parts are mutually hinged; the head end of the first linkage block is rotationally connected with the fixed hinge piece, the tail end of the first linkage block is slidably connected with the movable hinge piece, the head end of the second linkage block is rotationally connected with the movable hinge piece, and the tail end of the second linkage block is slidably connected with the fixed hinge piece, so that the fixed hinge piece and the movable hinge piece can be folded or expanded; the fixed hinge piece and the movable hinge piece are synchronously connected and supported by the first linkage block and the second linkage block, looseness in the using process can be avoided, the structural stability is improved, the weight of the fixed hinge piece and the weight of the movable hinge piece can be equally divided, the bearing capacity is improved, and the service life is prolonged. In addition, due to the fact that the position of the hinge point of the first linkage block and the second linkage block is movable, the relative opening and closing range of the fixed hinge piece and the movable hinge piece is widened, it is ensured that the hinge can be applied to various scenes, and the adaptability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of hinge technology, and in particular relates to a highly stable hinge. Background Technology

[0002] A hinge is a two-fold connecting component consisting of two flaps and a pin. The pin is rotatably inserted between the two flaps, allowing the two flaps to rotate relative to each other. It is mainly used to connect fixed objects and moving objects (such as doors, windows, and flip covers of electronic devices), allowing the moving objects to open and close freely.

[0003] While existing hinges are simple in structure and relatively inexpensive, they still have at least the following problems:

[0004] Firstly, it often becomes loose during use, lacks stability, and is easily damaged due to its poor load-bearing capacity, resulting in a short service life.

[0005] Secondly, due to the fixed position of the pin, the relative opening and closing range of the two sheets is relatively narrow, which makes it unsuitable for some scenarios that require a wider opening and closing range, resulting in poor adaptability. Utility Model Content

[0006] Technical problems to be solved

[0007] This invention provides a highly stable hinge that can solve the problems mentioned in the background art.

[0008] Technical solution

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A highly stable hinge includes a hinge assembly and a connecting assembly; the hinge assembly includes a fixed hinge piece and a movable hinge piece; the connecting assembly includes a first linkage block and a second linkage block that are hinged together at their middle parts; the first linkage block is rotatably connected to the fixed hinge piece at its front end and slidably connected to the movable hinge piece at its rear end; the second linkage block is rotatably connected to the movable hinge piece at its front end and slidably connected to the fixed hinge piece at its rear end, so that the fixed hinge piece and the movable hinge piece can be folded or expanded.

[0011] Preferably, the fixed page is provided with a first sliding groove, and the moving page is provided with a second sliding groove; a first sliding rod that slides in cooperation with the second sliding groove is installed at the tail end of the first linkage block, and a second sliding rod that slides in cooperation with the first sliding groove is installed at the tail end of the second linkage block; the first sliding groove and the second sliding groove are symmetrically designed, and the length of the first sliding groove corresponds to the expansion angle of the moving page.

[0012] Preferably, the fixed blade is threaded with a first adjusting bolt, one end of which passes through the first sliding groove and abuts against the second sliding rod; the movable blade is threaded with a second adjusting bolt, one end of which passes through the second sliding groove and abuts against the first sliding rod; the first adjusting bolt and the second adjusting bolt are available in various lengths for selection.

[0013] Preferably, the fixed sheet and the moving sheet are symmetrically designed, and the first groove is inclined along the folding direction of the moving sheet, so that the moving sheet can be folded more tightly to fit the fixed sheet.

[0014] Preferably, both the first slide rod and the second slide rod are equipped with rotatable sleeves, and the sleeve on the first slide rod is in sliding engagement with the second slide groove, and the sleeve on the second slide rod is in sliding engagement with the first slide groove.

[0015] Preferably, both the fixed sheet and the moving sheet are U-shaped, and the fixed sheet is provided with the first slide groove on both opposite sides, and the moving sheet is provided with the second slide groove on both opposite sides; the two ends of the second slide rod extend into the two first slide grooves respectively, and the two ends of the first slide rod extend into the second slide groove respectively.

[0016] Preferably, both the first linkage block and the second linkage block are equipped with elastic rolls in the middle, and a shaft is also provided between the first linkage block and the second linkage block. The two ends of the shaft are rotatably placed in the two elastic rolls, and the shaft is interference-fitted with the two elastic rolls to provide rotational damping.

[0017] Preferably, the first linkage block is provided with a first slot, the second linkage block is provided with a second slot, and the two elastic rolls are respectively detachably inserted into the second slot and the second slot.

[0018] Preferably, the fixed leaf blade has a first rotating hole, and the movable leaf blade has a second rotating hole; the first linkage block has a first bolt at its first end, the first bolt rotatably passes through the first linkage block and the first rotating hole, and one end of the first bolt has a first abutment abutting against the outside of the fixed leaf blade, and the other end of the first bolt is fitted with a first nut abutting against the outside of the first linkage block; the second linkage block has a second bolt at its first end, the second bolt rotatably passes through the second linkage block and the second rotating hole, and one end of the second bolt has a second abutment abutting against the outside of the movable leaf blade, and the other end of the second bolt is fitted with a second nut abutting against the outside of the second linkage block.

[0019] Preferably, both the first bolt and the second bolt are fitted with elastic pressure plates, and the elastic pressure plate on the first bolt abuts against the first linkage block and the first nut to provide rotational damping, and the elastic pressure plate on the second bolt abuts against the second linkage block and the second nut to provide rotational damping.

[0020] Preferably, both the elastic roll and the elastic pressure plate can be made of elastic materials with deformation and recovery capabilities, such as elastomeric plastics, elastic metals, and rubber.

[0021] (III) Beneficial Effects

[0022] This utility model provides a highly stable hinge in which the fixed and moving hinges are synchronously connected and supported by a first linkage block and a second linkage block. This not only prevents loosening during use and improves structural stability, but also allows the fixed and moving hinges to distribute weight evenly, thereby increasing load-bearing capacity and extending service life. Furthermore, the movable design of the hinge point of the first and second linkage blocks widens the relative opening and closing range of the fixed and moving hinges, ensuring that it can be used in various scenarios and improving adaptability. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This diagram illustrates the usage state of the present invention. Figure 1 ;

[0025] Figure 2 It shows Figure 1 The main view;

[0026] Figure 3 It shows Figure 2 AA section view;

[0027] Figure 4 It shows Figure 2 BB section view;

[0028] Figure 5 This diagram illustrates the usage state of the present invention. Figure 2 ;

[0029] Figure 6 This diagram illustrates the usage state of the present invention. Figure 3 ;

[0030] Figure 7 An exploded view of the overall structure of this utility model is shown;

[0031] Figure 8 An exploded view of part of the structure of this utility model is shown;

[0032] Figure 9 A schematic diagram of the overall structure of another embodiment of the present invention is shown. Figure 1 ;

[0033] Figure 10 A schematic diagram of the overall structure of another embodiment of the present invention is shown. Figure 2 ;

[0034] Figure 11 It shows Figure 10 Top view;

[0035] Figure 12 It shows Figure 11 CC section view;

[0036] Figure 13 It shows Figure 11 DD sectional view;

[0037] Figure 14 A schematic diagram showing the specifications of the adjusting bolt of this utility model is provided.

[0038] In the diagram: 1. Hinge assembly, 11. Fixed hinge, 111. First slide groove, 112. First adjusting bolt, 113. First rotating hole, 12. Moving hinge, 121. Second slide groove, 122. Second adjusting bolt, 123. Second rotating hole, 2. Connecting assembly, 20. Shaft, 21. First linkage block, 211. First slide rod, 212. First slot, 213. First bolt, 2131. First stop block, 2132. First nut, 22. Second linkage block, 221. Second slide rod, 222. Second slot, 223. Second bolt, 2231. Second stop block, 2232. Second nut, 2b. Sleeve wheel, 2t. Elastic roll plate, 2y. Elastic pressure plate. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0040] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application.

[0041] See appendix Figure 1 -Appendix Figure 8 A highly stable hinge includes a hinge assembly 1 and a connecting assembly 2. The hinge assembly 1 includes a fixed hinge piece 11 and a movable hinge piece 12. The connecting assembly 2 includes a first linkage block 21 and a second linkage block 22 that are hinged together at their middle parts. The first linkage block 21 is rotatably connected to the fixed hinge piece 11 at its front end and slidably connected to the movable hinge piece 12 at its rear end. The second linkage block 22 is rotatably connected to the movable hinge piece 12 at its front end and slidably connected to the fixed hinge piece 11 at its rear end, so that the fixed hinge piece 11 and the movable hinge piece 12 can be folded or expanded.

[0042] Specifically, the initial installation involves installing the fixed plate 11 and the movable plate 12 onto the fixed object and the movable object, respectively. The movable object can be a door, window, or the flip cover of an electronic product, etc. This utility model does not limit this. For ease of understanding, in this embodiment, the fixed object is preset to be a door frame (not shown in the figure), and the movable object is the door body (not shown in the figure), and the analysis is based on this.

[0043] Usage: Under normal circumstances, the movable flap 12 folds and fits against the fixed flap 11, keeping the door closed. When the door is pushed to apply a positive force to the movable flap 12, the first end of the first linkage block 21 and the first end of the second linkage block 22 rotate synchronously around the fixed flap 11 and the movable flap 12, respectively, while the tail ends of the first linkage block 21 and the second linkage block 22 slide synchronously along the movable flap 12 and the fixed flap 11, respectively, thus driving the movable flap 12 to flip and expand relative to the fixed flap 11 to open the door. Similarly, when the door is pushed to apply a negative force to the movable flap 12, the first end of the first linkage block 21 and the first end of the second linkage block 22 rotate synchronously around the fixed flap 11 and the movable flap 12, respectively, while the tail ends of the first linkage block 21 and the second linkage block 22 slide synchronously along the movable flap 12 and the fixed flap 11, respectively, thus driving the movable flap 12 to flip and fold relative to the fixed flap 11 to close the door.

[0044] During the opening and closing process, under the structural constraints of the first linkage block 21 and the second linkage block 22, there are multiple connection points between the fixed hinge 11 and the moving hinge 12 to make the connection between the two more stable and reduce the possibility of the hinge loosening during use. At the same time, the weight applied to the moving hinge 12 by the door body is also transmitted and evenly distributed to the fixed hinge 11 through each connection point to improve the overall load-bearing capacity of the hinge and reduce the damage rate. On the other hand, the hinge point position of the first linkage block 21 and the second linkage block 22 can also move with the expansion of the moving hinge to widen the opening and closing range of the door body and enrich the usage.

[0045] In summary, compared with the prior art, the fixed leaf 11 and the moving leaf 12 in this solution are synchronously connected and supported by the first linkage block 21 and the second linkage block 22. This not only prevents loosening during use and improves structural stability, but also allows the fixed leaf 11 and the moving leaf 12 to distribute the weight evenly, thereby increasing the load-bearing capacity and extending the service life. Furthermore, the movable design of the hinge point of the first linkage block 21 and the second linkage block 22 expands the relative opening and closing range of the fixed leaf 11 and the moving leaf 12, ensuring that it can be used in a variety of scenarios and improving its adaptability.

[0046] It should be noted that in the above design, the sliding distance of the first linkage block 21 and the second linkage block 22 determines the expansion angle between the fixed leaf 11 and the moving leaf 12. The manufacturer can preset the sliding distance of the first linkage block 21 and the second linkage block 22 according to the actual needs of the user, so as to adjust the opening and closing range of the hinge and make the hinge be accurately used in the appropriate scenario.

[0047] See appendix Figure 1 -Appendix Figure 8 The sliding structures between the fixed plate 11 and the second linkage block 22, and between the moving plate 12 and the first linkage block 21, are diverse, and this utility model does not impose any restrictions on them. For ease of understanding, in this embodiment, the fixed plate 11 is provided with a first sliding groove 111, and the moving plate 12 is provided with a second sliding groove 121. The tail end of the first linkage block 21 is equipped with a first sliding rod 211 that slides in cooperation with the second sliding groove 121, and the tail end of the second linkage block 22 is equipped with a second sliding rod 221 that slides in cooperation with the first sliding groove 111. The first sliding groove 111 and the second sliding groove 121 are symmetrically designed, and the length of the first sliding groove 111 corresponds to the expansion angle of the moving plate 12.

[0048] Specifically, when the door is pushed to apply a positive force to the movable flap 12, the second slide rod 221 moves forward along the first slide groove 111, simultaneously moving forward along the first slide groove 111, so that the fixed flap 11 and the movable flap 12 can be stably expanded and opened; similarly, when the door is pushed to apply a negative force to the movable flap 12, the second slide rod 221 moves in the opposite direction along the first slide groove 111, simultaneously moving in the opposite direction along the first slide groove 111, so that the fixed flap 11 and the movable flap 12 can be stably folded and fitted; therefore, the above sliding structure makes the opening and closing of this hinge more stable.

[0049] On the other hand, since the lengths of the first slide groove 111 and the second slide groove 121 correspond to the expansion angle of the moving blade 12, the manufacturer can adjust the opening and closing range of the hinge by simply adjusting the lengths of the first slide groove 111 and the second slide groove 121 through machining, which improves the convenience of production.

[0050] See appendix Figure 9 -Appendix Figure 14 The method of changing the length of the first slide groove 111 and the second slide groove 121 by cutting is not conducive to users adjusting the opening and closing range of the hinge themselves, resulting in a poor user experience. To solve this problem, in this embodiment, the fixed flap 11 is threadedly connected to a first adjusting bolt 112, one end of which passes through the first slide groove 111 and can correspondingly abut against the second slide rod 221; the movable flap 12 is threadedly connected to a second adjusting bolt 122, one end of which passes through the second slide groove 121 and can correspondingly abut against the first slide rod 211; the first adjusting bolt 112 and the second adjusting bolt 122 are available in various length specifications for selection.

[0051] Specifically, after the fixed hinge 11 and the movable hinge 12 are installed onto the fixed object and the movable object respectively, the first adjusting bolt 112 and the second adjusting bolt 122 are then installed onto the fixed hinge 11 and the movable hinge 12 respectively, and both are made to pass through the first sliding groove 111 and the second sliding groove 121 respectively; when the fixed hinge 11 and the movable hinge 12 expand relative to each other, the second sliding rod 221 and the first sliding rod 211 slide and abut against the first adjusting bolt 112 and the geothermal adjusting bolt respectively, thereby limiting the opening and closing angle of the hinge.

[0052] It should be noted that in actual use, users can select the first adjusting bolt 112 and the second adjusting bolt 122 of the corresponding length specifications to adjust the relative length of the first slide rail 111 and the second slide rail 121 according to the required opening and closing range of the hinge, thereby adjusting the opening and closing angle of the hinge.

[0053] Further details are attached. Figure 10 and attached Figure 14As shown, the first adjusting bolt 112 and the second adjusting bolt 122 are also provided with a flathead or Phillips head for inserting tools such as screwdrivers (not shown in the figure) to facilitate the user to rotate and disassemble the first adjusting bolt 112 and the second adjusting bolt 122 with the help of tools.

[0054] See appendix Figure 1 -Appendix Figure 6 The fixed hinge 11 and the movable hinge 12 are symmetrically designed, and the first slide groove 111 is inclined along the folding direction of the movable hinge 12. This design can limit the range of motion of the hinge point in the middle of the fixed hinge 11 and the movable hinge 12, and prevent a large gap between the movable hinge 12 and the fixed hinge 11 after the hinge is opened; it can also make the movable hinge 12 fold more tightly against the fixed hinge 11, improve the tightness, and prevent the hinge from shaking easily after it is closed.

[0055] See appendix Figure 5 -Appendix Figure 8 Both the first slide rod 211 and the second slide rod 221 are equipped with rotatable sleeves 2b, and the sleeves 2b on the first slide rod 211 are in sliding engagement with the second slide groove 121, while the sleeves 2b on the second slide rod 221 are in sliding engagement with the first slide groove 111. This design can reduce the friction between the first slide rod 211 and the second slide rod 221 and the second slide groove 121 and the first slide groove 111, extend the service life, and reduce noise.

[0056] See appendix Figure 1 -Appendix Figure 8 Both the fixed plate 11 and the moving plate 12 are U-shaped, and the fixed plate 11 has a first sliding groove 111 on both sides, and the moving plate 12 has a second sliding groove 121 on both sides. The two ends of the second sliding rod 221 extend into the two first sliding grooves 111 respectively, and the two ends of the first sliding rod 211 extend into the second sliding groove 121 respectively. This design allows the first linkage block 21 and the second linkage to transmit the pressure more evenly, further improving the load-bearing capacity, while also ensuring the sliding stability of the first linkage block 21 and the second linkage.

[0057] See appendix Figure 5 -Appendix Figure 8 Both the first linkage block 21 and the second linkage block 22 are equipped with elastic rolls 2t in the middle. A shaft 20 is also provided between the first linkage block 21 and the second linkage block 22. The two ends of the shaft 20 are rotatably placed in the two elastic rolls 2t, and the shaft 20 is interference-fitted with the two elastic rolls 2t.

[0058] Specifically, during the mutual expansion of the fixed hinge 11 and the moving hinge 12, the two elastic blades 2t continuously press against the shaft 20 to provide rotational damping, thereby enriching the operating feel and allowing the hinge to remain in the current position after opening and closing, thus improving the user experience.

[0059] See appendix Figure 5 -Appendix Figure 8 The first linkage block 21 is provided with a first slot 212, and the second linkage block 22 is provided with a second slot 222. The two elastic coils 2t are detachably inserted into the second slot 222 and the second slot 222 respectively. This design makes it convenient for users to disassemble and replace the two elastic coils 2t, and users can select elastic coils 2t of different thicknesses according to their needs to adjust the torque and change the rotational damping.

[0060] See appendix Figure 4 -Appendix Figure 8 The rotational connection between the first linkage block 21 and the fixed plate 11, and the rotational connection between the second linkage block 22 and the moving plate 12 are varied, and the utility model does not impose any restrictions on them. For ease of understanding, in this embodiment, the fixed plate 11 is provided with a first rotating hole 113, and the moving plate 12 is provided with a second rotating hole 123; the first linkage block 21 is provided with a first bolt 213 at its head end, the first bolt 213 rotatably passes through the first linkage block 21 and the first rotating hole 113, and one end of the first bolt 213 is provided with a first bolt abutting against the outer side of the fixed plate 11. The first bolt 213 is mounted on the other end of the first linkage block 21 with a first nut 2132 that abuts against the outside of the first linkage block 21. The first end of the second linkage block 22 is provided with a second bolt 223, which rotatably passes through the second linkage block 22 and the second rotating hole 123. One end of the second bolt 223 is provided with a second abutment 2231 that abuts against the outside of the moving blade 12, and the other end of the second bolt 223 is provided with a second nut 2232 that abuts against the outside of the second linkage block 22. This structural design facilitates the assembly and disassembly of the first linkage block 21 and the second linkage block 22.

[0061] See appendix Figure 4 -Appendix Figure 8 Both the first bolt 213 and the second bolt 223 are fitted with elastic pressure plates 2y. The elastic pressure plate 2y on the first bolt 213 abuts against the first linkage block 21 and the first nut 2132 to provide rotational damping. The elastic pressure plate 2y on the second bolt 223 abuts against the second linkage block 22 and the second nut 2232 to provide rotational damping.

[0062] Specifically, during the mutual expansion of the fixed hinge 11 and the moving hinge 12, two elastic pressure plates 2y continuously compress the first linkage block 21 and the second linkage block 22 respectively to provide rotational damping, thereby further enriching the operating feel and enabling the hinge to stop more stably after opening and closing.

[0063] See appendix Figure 1 -Appendix Figure 8The materials used to make the elastic roll 2t and the elastic pressure plate 2y are diverse, such as elastic plastics, elastic metals, rubber and other elastic materials with deformation and recovery capabilities, or other materials with high friction. This utility model does not limit these materials. In order to extend the service life of the elastic roll 2t and the elastic pressure plate 2y, the elastic roll 2t and the elastic pressure plate 2y in this embodiment are preferably made of elastic metal.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-stability hinge, characterized by, The assembly includes a hinge assembly (1) and a connecting assembly (2); the hinge assembly (1) includes a fixed leaf (11) and a movable leaf (12); the connecting assembly (2) includes a first linkage block (21) and a second linkage block (22) that are hinged together in the middle; the first linkage block (21) is rotatably connected to the fixed leaf (11) at its front end and slidably connected to the movable leaf (12) at its rear end; the second linkage block (22) is rotatably connected to the movable leaf (12) at its front end and slidably connected to the fixed leaf (11) at its rear end, so that the fixed leaf (11) and the movable leaf (12) can be folded or expanded.

2. The high-stability hinge according to claim 1, characterized in that, The fixed sheet (11) is provided with a first slide groove (111), and the movable sheet (12) is provided with a second slide groove (121); the tail end of the first linkage block (21) is equipped with a first slide rod (211) that slides in cooperation with the second slide groove (121), and the tail end of the second linkage block (22) is equipped with a second slide rod (221) that slides in cooperation with the first slide groove (111); the first slide groove (111) and the second slide groove (121) are symmetrically designed, and the length of the first slide groove (111) corresponds to the expansion angle of the movable sheet (12).

3. A high-stability hinge according to claim 2, characterized in that, The fixed blade (11) is threaded with a first adjusting bolt (112), one end of which passes through the first slide groove (111) and abuts against the second slide rod (221); the movable blade (12) is threaded with a second adjusting bolt (122), one end of which passes through the second slide groove (121) and abuts against the first slide rod (211); the first adjusting bolt (112) and the second adjusting bolt (122) are available in various lengths for selection.

4. A high-stability hinge according to claim 2, characterized in that, The fixed sheet (11) and the movable sheet (12) are symmetrically designed, and the first groove (111) is inclined along the folding direction of the movable sheet (12).

5. A high-stability hinge according to claim 2, characterized in that, Both the first slide rod (211) and the second slide rod (221) are equipped with rotatable sleeves (2b), and the sleeves (2b) on the first slide rod (211) are in sliding engagement with the second slide groove (121), and the sleeves (2b) on the second slide rod (221) are in sliding engagement with the first slide groove (111).

6. A high-stability hinge according to any one of claims 2-5, characterized in that, Both the fixed sheet (11) and the movable sheet (12) are U-shaped, and the fixed sheet (11) is provided with the first slide groove (111) on both sides, and the movable sheet (12) is provided with the second slide groove (121) on both sides; the two ends of the second slide rod (221) extend into the two first slide grooves (111), and the two ends of the first slide rod (211) extend into the second slide groove (121).

7. A high-stability hinge according to claim 1, characterized in that, Both the first linkage block (21) and the second linkage block (22) are equipped with elastic rolls (2t) in the middle. A shaft (20) is also provided between the first linkage block (21) and the second linkage block (22). The two ends of the shaft (20) are rotatably placed in the two elastic rolls (2t), and the shaft (20) is interference-fitted with the two elastic rolls (2t) to provide rotational damping.

8. A high-stability hinge according to claim 7, characterized in that, The first linkage block (21) is provided with a first slot (212), and the second linkage block (22) is provided with a second slot (222). The two elastic rolls (2t) are respectively detachably inserted into the second slot (222) and the second slot (222).

9. A high-stability hinge according to claim 7, characterized in that, The fixed plate (11) is provided with a first rotating hole (113), and the moving plate (12) is provided with a second rotating hole (123); the first linkage block (21) is provided with a first bolt (213) at its first end, the first bolt (213) rotatably passes through the first linkage block (21) and the first rotating hole (113), and one end of the first bolt (213) is provided with a first abutment (2131) abutting against the outside of the fixed plate (11), and the other end of the first bolt (213) is provided with a first nut (2132) abutting against the outside of the first linkage block (21); the second linkage block (22) is provided with a second bolt (223) at its first end, the second bolt (223) rotatably passes through the second linkage block (22) and the second rotating hole (123), and one end of the second bolt (223) is provided with a second abutment (2231) abutting against the outside of the moving plate (12), and the other end of the second bolt (223) is provided with a second nut (2232) abutting against the outside of the second linkage block (22).

10. A high-stability hinge according to claim 9, characterized in that, Both the first bolt (213) and the second bolt (223) are fitted with elastic pressure plates (2y), and the elastic pressure plate (2y) on the first bolt (213) abuts against the first linkage block (21) and the first nut (2132) to provide rotational damping, and the elastic pressure plate (2y) on the second bolt (223) abuts against the second linkage block (22) and the second nut (2232) to provide rotational damping.

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