Multi-finger interdigitated stacked damper hinge device

Abstract

The utility model relates to hardware technical field, concretely is a kind of multi-fin interlaced stacked type damping hinge device, including fixed seat;Movable arm, rotatable connection by pivot and fixed seat;Damping component, it is set on the both ends of pivot, damping component sleeve, sleeve is provided with fixed fin and movable fin, fixed fin is fixedly connected with fixed seat, movable fin is fixedly connected with movable arm or pivot, fixed fin includes fixed ring, and several fin plates are installed on fixed ring;Damping medium, it is filled in the damping cavity formed between adjacent fixed fin and movable fin.The multi-fin interlaced stacked type damping hinge device, using fixed fin and movable fin interlaced stacked structure design, substantially increase the contact area of fin and damping medium, so that movable arm rotates, damping medium is more sufficient in the shear friction between fin, effectively avoid the problem of traditional single blade type structure damping force fluctuation, ensure that the opening and closing process is stable and no impact.

Description

Technical Field

[0001] This utility model relates to the field of hardware technology, and more specifically, to a multi-fin staggered stacked damping hinge device. Background Technology

[0002] Damped hinges, as key components enabling slow opening and closing and providing cushioning and vibration reduction, are widely used in furniture, automotive interiors, electronic devices, medical equipment, and many other fields. Their core function is to dissipate kinetic energy through a damping structure, preventing collisions, noise, or damage caused by instantaneous impact forces during opening and closing, thus improving product safety and comfort. With the increasing demands for product quality across industries, the market is placing higher requirements on the damping stability, load-bearing capacity, service life, and structural compactness of damped hinges.

[0003] Currently, most existing damping hinges employ a single friction plate, a piston-type damper, or a simple blade design for damping structure. Among these, the damping force of a single friction plate structure is easily affected by wear, and its damping effect significantly diminishes after long-term use, making it difficult to meet the needs of high-frequency, heavy-load scenarios. While piston-type dampers offer greater damping force, their complex structure, large space requirements, and limited adaptability limit their effectiveness. Traditional blade-type damping structures typically use a single layer or a small number of blades in conjunction with a damping medium for buffering, resulting in a narrow damping torque adjustment range, low energy consumption efficiency, and, due to improper blade arrangement, fluctuations in damping force, affecting the smoothness of the opening and closing process.

[0004] In addition, the sealing performance of existing damping hinges is often insufficient, and the damping medium (such as silicone oil, damping grease, etc.) is prone to leakage, which not only reduces the damping effect but may also contaminate surrounding components. At the same time, the connection reliability between the fins of some damping structures and the fixed seat and movable arm is poor, and they are prone to loosening and deformation during long-term rotation, which further shortens the service life of the hinge. Utility Model Content

[0005] The purpose of this invention is to provide a multi-fin staggered stacked damping hinge device to solve the problem mentioned in the background art, where the damping structure of existing damping hinges mostly adopts a single friction plate, piston-type damper, or simple blade design. Among them, the damping force of the single friction plate structure is easily affected by wear, and the damping effect decreases significantly after long-term use, making it difficult to meet the needs of high-frequency and heavy-load scenarios.

[0006] To achieve the above objectives, this utility model provides a multi-fin staggered stacked damping hinge device, including a fixed base; The movable arm is rotatably connected to the fixed base via a pivot. A damping assembly is sleeved on both ends of the rotating shaft. The damping assembly is enclosed in a sleeve, and a fixed fin and a movable fin are disposed inside the sleeve. The fixed fin is fixedly connected to the fixed seat, and the movable fin is fixedly connected to the movable arm or the rotating shaft. The fixed fin includes a fixed ring, and a plurality of fin plates are mounted on the fixed ring. A damping medium is filled in the damping cavity formed between adjacent fixed and movable fins; A sealing structure is provided at both axial ends of the damping assembly to seal the damping cavity.

[0007] This setup establishes the basic mechanical structure through the rotational connection between the fixed base and the movable arm, using the rotating shaft to transmit motion. The relative arrangement of the fixed and movable fins in the damping assembly, combined with the damping medium within the damping cavity, works based on the principles of viscous resistance and energy dissipation. When the movable arm drives the rotating shaft and movable fins to rotate, the damping medium generates shear friction between the fins, converting mechanical motion energy into heat energy and other forms of dissipation, thus achieving buffering and vibration reduction. The sealing structure uses an axial sealing design to block the leakage path of the damping medium, ensuring the airtightness of the damping system.

[0008] Preferably, the fixing rings of both the fixed fin and the movable fin are annular structures, the fin plates on both the fixed fin and the movable fin are arranged in annular, equally spaced arrangement, and the number is 2-4, and the fin plates on the fixed fin and the movable fin are stacked alternately.

[0009] The ring-shaped fixing ring design adapts to the cylindrical structure of the rotating shaft, ensuring the coaxiality of the fins and the rotating shaft; the ring-shaped and equally spaced fin plates ensure that the damping medium is subjected to balanced forces during movement, avoiding local pressure concentration; the design of 2-4 fin plates balances the magnitude of damping force and structural compactness; the staggered stacking method maximizes the contact area between the fins and the damping medium, enhances the shear friction effect, and makes energy dissipation more efficient, while the spatial constraint of the staggered structure reduces the fluctuation of damping force.

[0010] Preferably, the damping medium is high-viscosity silicone oil, damping grease, or magnetorheological fluid.

[0011] This setup utilizes high-viscosity silicone oil and damping grease, which, due to their excellent viscoelasticity, generate stable viscous resistance during relative fin movement, dissipating energy through intermolecular internal friction. Magnetorheological fluid, on the other hand, can adjust its viscosity through an external magnetic field, achieving dynamic control of the damping force. Its core principle is to utilize the aggregation effect of the magnetic field on fluid particles to change the internal frictional resistance, adapting to the needs of different motion conditions.

[0012] Preferably, the sealing structure includes a sealing gasket and a pressure cap sleeved on the rotating shaft. The pressure cap is detachably connected to the fixed seat, and the pressure cap presses the sealing gasket against the end face of the damping assembly.

[0013] This design utilizes the compression deformation properties of elastic materials to fill the tiny gap between the end face of the damping component and the gland, forming an elastic sealing interface. The gland generates axial preload through a detachable connection with the fixing seat, tightly pressing the sealing gasket against the end face of the damping component. Based on the dual mechanism of elastic sealing and mechanical compression, the leakage path of the damping medium along the axial direction is blocked.

[0014] Preferably, the sleeve and the fixing seat are integrally formed, or the sleeve is fixedly connected to the fixing seat by bolts or buckles.

[0015] This integrated molding structure eliminates gaps between components through overall processing, enhances structural strength and stability by utilizing the integrity of materials, and reduces assembly errors. Detachable connection methods such as bolts and clips achieve a secure connection between the sleeve and the fixed base through a mechanical locking mechanism, while retaining the flexibility of disassembly and assembly to meet the needs of different production and maintenance scenarios.

[0016] Preferably, the fixed fins and movable fins are made of metal or engineering plastic, wherein the metal is stainless steel or aluminum alloy, and the engineering plastic is polytetrafluoroethylene or nylon.

[0017] This design utilizes stainless steel, aluminum alloy, and other metal materials, whose high strength, wear resistance, and good thermal conductivity allow them to withstand the mechanical wear and heat accumulation caused by high-frequency rotation. Engineering plastics such as polytetrafluoroethylene (PTFE) and nylon possess excellent self-lubricating properties, corrosion resistance, and lightweight characteristics, reducing frictional resistance during fin movement and lowering the overall structural weight. The choice of materials is based on the mechanical properties and environmental requirements of different application scenarios, achieving a balance between functionality and cost.

[0018] Preferably, the end of the movable arm away from the rotating shaft is provided with a connecting part, and the connecting part has a mounting hole for connecting with an external component.

[0019] This connection section serves as the link between the movable arm and external components. It uses mounting holes to achieve common mechanical fixing methods such as bolt connection and pin connection. The positioning accuracy of the holes ensures the coaxiality and stability of the connection, so that the movement of the external components can be accurately transmitted to the movable arm, realizing the coordinated work of the hinge and the external equipment.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This multi-fin staggered stacked damping hinge device employs a structural design that alternates between fixed and movable fins, significantly increasing the contact area between the fins and the damping medium. This allows for more thorough shear friction between the damping medium and the fins during the rotation of the movable arm, resulting in a significant improvement in energy consumption efficiency. It effectively avoids the damping force fluctuation problem of traditional single-blade structures, ensuring a smooth and shock-free opening and closing process. Furthermore, by adjusting the number of fins (2-4) and the type of damping medium (high-viscosity silicone oil, damping grease, or magnetorheological fluid), the damping torque can be flexibly adjusted to meet the application needs of various fields such as furniture, automotive interiors, and electronic devices.

[0021] The damping components are symmetrically fitted at both ends of the pivot, making the force on the pivot more even, reducing local wear, and improving the overall load-bearing capacity of the hinge, which can meet the long-term use requirements of high-frequency and heavy-load scenarios. The reliable fixed connection between the fixed fin and the fixed seat, and between the movable fin and the movable arm or pivot, combined with the selection of high-strength materials such as stainless steel and aluminum alloy, or wear-resistant engineering plastics such as polytetrafluoroethylene and nylon, further enhances the structural stability, effectively avoids loosening and deformation during long-term rotation, and extends the service life of the hinge.

[0022] The sealing structure composed of the sealing gasket and the gland forms an axial tight seal for the damping cavity, effectively preventing the leakage of damping media such as high-viscosity silicone oil and damping grease. This ensures the long-term stability of the damping effect and avoids the damping media from contaminating surrounding components, thus improving the cleanliness of the product. It is especially suitable for electronic equipment, medical devices and other scenarios with high requirements for environmental cleanliness.

[0023] The sleeve and fixed base can be integrally molded, simplifying the overall structure and improving structural strength; alternatively, they can be connected via bolts, clips, or other detachable methods for easy assembly and maintenance. The design of the connecting part and mounting holes at the end of the movable arm facilitates quick docking with various external components, offering wide adaptability. The overall structure is compact, occupying less space than traditional piston dampers, allowing for flexible installation in space-constrained environments and broadening the product's application range. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the damping component in this utility model; Figure 3 This is a schematic diagram of the structure of the fixed fin in this utility model; The meanings of the labels in the diagram are as follows: 1. Fixed base; 2. Movable arm; 21. Connecting part; 22. Mounting hole; 3. Rotating shaft; 4. Damping assembly; 41. Sleeve; 42. Fixed fin; 421. Fixed ring; 422. Fin plate; 43. Movable fin; 5. Damping medium; 6. Damping cavity; 7. Sealing structure; 71. Sealing gasket; 72. Pressure cap. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a multi-fin staggered stacked damping hinge device, such as Figures 1-3 As shown, it includes a fixed base 1; The movable arm 2 is rotatably connected to the fixed base 1 via a rotating shaft 3; Damping assembly 4 is sleeved on both ends of rotating shaft 3. Damping assembly 4 is enclosed by sleeve 41. Fixed fin 42 and movable fin 43 are provided inside sleeve 41. Fixed fin 42 is fixedly connected to fixed seat 1. Movable fin 43 is fixedly connected to movable arm 2 or rotating shaft 3. Fixed fin 42 includes fixed ring 421. Several fin plates 422 are installed on fixed ring 421. Damping medium 5 is filled in the damping cavity 6 formed between adjacent fixed fins 42 and movable fins 43; The sealing structure 7 is located at both ends of the damping assembly 4 and is used to seal the damping cavity 6.

[0027] The basic mechanical structure is constructed through the rotational connection between the fixed seat 1 and the movable arm 2, and the motion is transmitted through the rotating shaft 3. The relative arrangement of the fixed fin 42 and the movable fin 43 in the damping component 4, together with the damping medium 5 in the damping cavity 6, based on the principle of viscous resistance and energy dissipation, when the movable arm 2 drives the rotating shaft 3 and the movable fin 43 to rotate, the damping medium 5 generates shear friction between the fins, which dissipates the mechanical motion energy into heat energy and other forms, thereby achieving buffering and vibration reduction. The sealing structure 7 blocks the leakage channel of the damping medium 5 through the axial sealing design, ensuring the sealing of the damping system.

[0028] A core architecture for a multi-finned, staggered, stacked damping hinge was constructed, clearly defining the functional division and collaborative logic of the fixed base 1, movable arm 2, rotating shaft 3, damping assembly 4, damping medium 5, and sealing structure 7, fundamentally fulfilling the core requirement of damping and buffering. By symmetrically arranging the damping assembly 4 at both ends of the rotating shaft 3, the force on the rotating shaft 3 is made more uniform, reducing localized wear. Simultaneously, the sealing structure 7 provides a fundamental guarantee for the stability of the damping effect, effectively preventing performance failure due to medium leakage, and laying the structural foundation for subsequent structural optimization and performance improvement.

[0029] In this embodiment, the fixing rings 421 of the fixed fin 42 and the movable fin 43 are both annular structures. The fin plates 422 on the fixed fin 42 and the movable fin 43 are arranged in annular intervals, and the number is 2-4. The fin plates 422 on the fixed fin 42 and the movable fin 43 are stacked alternately.

[0030] The fixing ring 421 of the fixed fin 42 and the movable fin 43 adopts a ring structure, which is adapted to the cylindrical structure of the rotating shaft 3 to ensure the coaxiality of the fin and the rotating shaft 3. The fin plates 422 on the fixed fin 42 and the movable fin 43 are arranged in a ring with equal spacing, so that the damping medium 5 is subjected to balanced force during movement and avoids local pressure concentration. The design of 2-4 fin plates 422 takes into account both the damping force and the structural compactness. The staggered stacking method maximizes the contact area between the fin plates 422 and the damping medium 5, enhances the shear friction effect, and makes the energy dissipation more complete. At the same time, the spatial constraint of the staggered structure reduces the fluctuation of the damping force.

[0031] The design significantly improves the stability and adjustability of damping performance. The equidistant arrangement and staggered stacking of the fin plates 422 effectively solves the problem of large damping force fluctuations in traditional blade-type structures, ensuring smooth and shock-free opening and closing when the movable arm 2 drives the rotating shaft 3. By adjusting the number of fin plates 422, the damping requirements of different scenarios can be flexibly matched, broadening the product's adaptability. The combination of the ring structure of the fixing ring 421 and the staggered design of the fin plates 422 further optimizes the space utilization of the damping component 4 while ensuring the damping effect, making the hinge more suitable for compact installation scenarios.

[0032] Specifically, the damping medium 5 is high-viscosity silicone oil, damping grease, or magnetorheological fluid.

[0033] The high-viscosity silicone oil and damping grease filled in the damping cavity 6 generate stable viscous resistance when the fixed fin 42 and the movable fin 43 move relative to each other due to their excellent viscoelasticity, and dissipate energy through the internal friction between molecules; the magnetorheological fluid can adjust its viscosity through an external magnetic field to achieve dynamic control of the damping force. Its core is to use the aggregation effect of the magnetic field on fluid particles to change the internal frictional resistance and adapt to the needs of different motion conditions.

[0034] This provides a diverse range of performance options for damping hinges. High-viscosity silicone oil and damping grease can meet the stable damping requirements of conventional scenarios, while magnetorheological fluids are suitable for special scenarios requiring dynamic adjustment of damping force, such as the buffer control of precision equipment. The adaptability of different types of damping media 5 enables the hinges to meet the differentiated needs of various fields such as furniture, automotive interiors, electronic devices, and medical devices, significantly improving the product's versatility and market competitiveness, and ensuring that the energy dissipation effect within the damping cavity 6 accurately matches actual usage requirements.

[0035] Furthermore, the sealing structure 7 includes a sealing gasket 71 and a pressure cap 72 sleeved on the rotating shaft 3. The pressure cap 72 is detachably connected to the fixed seat 1, and the pressure cap 72 presses the sealing gasket 71 against the end face of the damping assembly 4.

[0036] The sealing gasket 71 in the sealing structure 7 utilizes the compression deformation characteristics of elastic materials to fill the tiny gap between the end face of the damping component 4 and the gland 72, forming an elastic sealing interface. The gland 72 generates axial preload through a detachable connection with the fixed seat 1, which tightly presses the sealing gasket 71 against the end face of the damping component 4. Based on the dual mechanism of elastic sealing and mechanical pressing, the leakage path of the damping medium 5 along the axial direction is blocked.

[0037] The damping cavity 6 is reliably sealed, effectively preventing leakage of the damping medium 5. This ensures the long-term stability of the damping effect and avoids media contamination of surrounding components, making it particularly suitable for scenarios with high environmental cleanliness requirements. The detachable design of the gland 72 and the fixing base 1 facilitates later maintenance and replacement of the damping medium 5, reducing product maintenance costs. The combination structure of the sealing gasket 71 and the gland 72 is simple and reliable, balancing sealing performance and assembly convenience, ensuring the long-term stability of the sealing effect of the damping assembly 4.

[0038] Furthermore, the sleeve 41 and the fixed base 1 are integrally formed, or the sleeve 41 is fixedly connected to the fixed base 1 by bolts or buckles.

[0039] When the sleeve 41 of the damping component 4 and the fixed seat 1 adopt an integral molding structure, the connection gap between the components is eliminated by the overall processing technology, and the integrity of the material is used to improve the structural strength and stability and reduce assembly errors. When the sleeve 41 is connected to the fixed seat 1 by bolts and buckles in a detachable manner, the mechanical locking mechanism is used to achieve a stable connection between the two, while retaining the flexibility of disassembly and assembly to meet the needs of different production and maintenance scenarios.

[0040] The one-piece molding structure simplifies the manufacturing process, improves the rigidity and vibration resistance of the connection between the fixed base 1 and the sleeve 41, and reduces performance fluctuations caused by assembly errors. The detachable connection method facilitates the separate processing, transportation, and subsequent maintenance and replacement of the sleeve 41 and the fixed base 1, reducing production and maintenance costs. The optional design of two connection methods allows the product to adapt to different production modes such as mass production and customized assembly, enhancing the flexibility and adaptability of the production process, while ensuring the reliability of the connection between the damping component 4 and the fixed base 1.

[0041] Furthermore, the fixed fin 42 and the movable fin 43 are made of metal or engineering plastic. The metal material is stainless steel or aluminum alloy, and the engineering plastic material is polytetrafluoroethylene or nylon.

[0042] The fixed fins 42 and movable fins 43 are made of stainless steel, aluminum alloy, and other metal materials. Their high strength, high wear resistance, and good thermal conductivity allow them to withstand the mechanical wear and heat accumulation caused by high-frequency rotation. Engineering plastics such as polytetrafluoroethylene (PTFE) and nylon possess excellent self-lubricating properties, corrosion resistance, and lightweight characteristics, reducing frictional resistance during fin movement and lowering the overall structural weight. The selection of materials is based on the mechanical properties and environmental requirements of different application scenarios, achieving a balance between functionality and cost.

[0043] The lifespan and environmental adaptability of the fixed fin 42 and movable fin 43 have been significantly improved. The metal material is suitable for high-frequency, heavy-load scenarios, while the engineering plastic material is suitable for lightweight and corrosion-resistant scenarios, meeting the needs of different fields. The reasonable material selection effectively avoids loosening, deformation, and corrosion of the fixed fin 42 and movable fin 43 during long-term use, reducing the probability of product failure. At the same time, the application of engineering plastics helps to achieve overall lightweighting of the hinge, which is in line with the lightweight development trend of modern manufacturing and further optimizes the user experience.

[0044] Furthermore, the end of the movable arm 2 away from the pivot 3 is provided with a connecting part 21, and the connecting part 21 has a mounting hole 22 for connecting with external components.

[0045] The connecting part 21 at the end of the movable arm 2 away from the rotating shaft 3 serves as the connecting carrier between the movable arm 2 and the external components. The mounting holes 22 on it enable common mechanical fixing methods such as bolt connection and pin connection. The positioning accuracy of the mounting holes 22 ensures the coaxiality and stability of the connection, so that the movement of the external components can be accurately transmitted to the movable arm 2, realizing the coordinated work of the hinge and the external equipment.

[0046] The assembly process of the hinge and external components is simplified. The design of the mounting hole 22 is compatible with conventional fasteners, reducing assembly difficulty and reliance on special tools. The structural design of the connecting part 21 ensures the reliability of the connection between the movable arm 2 and the external components, avoiding loosening or displacement during movement and ensuring the stability of the overall mechanical system. At the same time, the standardized connection method broadens the application scenarios of the hinge, enabling it to be quickly adapted to various external components such as furniture door panels, automotive interior parts, and electronic device housings, thereby improving the product's market adaptability.

[0047] The multi-fin staggered stacked damping hinge device of this utility model is used in the following steps: External drive triggers motion: The external component is fixed to the movable arm 2 through the mounting hole 22 of the end connection part 21 of the movable arm 2. When an external opening and closing driving force is applied, such as pushing open a furniture door or adjusting the casing of an electronic device, the driving force is transmitted to the movable arm 2, causing the movable arm 2 to start rotating around the rotating shaft 3.

[0048] The relative motion of the fins and the generation of damping: When the movable arm 2 rotates, it synchronously drives the rotating shaft 3 to rotate. The movable fin 43, which is fixedly connected to the rotating shaft 3, rotates together with the rotating shaft 3, while the fixed fin 42 remains stationary because it is fixed to the fixed seat 1. At this time, the fin plates 422 of the fixed fin 42 and the movable fin 43 form an interlaced relative motion. The damping medium 5 in the damping cavity 6 is squeezed and sheared between the interlaced fin plates 422, generating stable viscous resistance, which hinders the relative motion of the fins, thereby slowing down the rotation speed of the movable arm 2, realizing buffering and vibration reduction, and avoiding impact or noise during the movement.

[0049] Synchronous sealing structure protection: While the damping medium 5 is undergoing shearing motion, the sealing gasket 71 in the sealing structure 7 is always tightly fitted to the end face of the damping component 4 under the pre-tightening force of the pressure cap 72, effectively preventing the damping medium 5 from leaking from the axial gap of the damping cavity 6, ensuring the stability of the quantity and performance of the damping medium 5, and ensuring that the damping effect does not decrease.

[0050] Movement Stop and Reset Preparation: When the external driving force disappears or the movable arm 2 reaches the preset stroke position, the rotation of the movable arm 2 gradually stops. At this time, the damping medium 5 returns to a stable state, and the staggered fin plates 422 remain relatively stationary. If a driving force is applied again, the device will repeat the above process, continuously exerting its damping and buffering effect. Throughout the entire operation, the damping components 4 symmetrically arranged at both ends of the rotating shaft 3 ensure that the rotating shaft 3 is subjected to uniform force, further improving the smoothness of the movement and the service life of the device.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-fin staggered stacked damping hinge device, characterized in that: include Fixed base (1); The movable arm (2) is rotatably connected to the fixed base (1) via a rotating shaft (3); A damping assembly (4) is sleeved on both ends of the rotating shaft (3). The damping assembly (4) is enclosed by a sleeve (41). The sleeve (41) contains a fixed fin (42) and a movable fin (43). The fixed fin (42) is fixedly connected to the fixed seat (1). The movable fin (43) is fixedly connected to the movable arm (2) or the rotating shaft (3). The fixed fin (42) includes a fixed ring (421). Several fin plates (422) are installed on the fixed ring (421). The damping medium (5) is filled in the damping cavity (6) formed between the adjacent fixed fin (42) and movable fin (43); A sealing structure (7) is provided at both ends of the damping assembly (4) to seal the damping cavity (6).

2. The multi-fin staggered stacked damping hinge device according to claim 1, characterized in that: The fixing rings (421) of the fixed fin (42) and the movable fin (43) are both annular structures. The fin plates (422) on the fixed fin (42) and the movable fin (43) are arranged in annular intervals, and the number is 2-4. The fin plates (422) on the fixed fin (42) and the movable fin (43) are stacked alternately.

3. The multi-fin staggered stacked damping hinge device according to claim 1, characterized in that: The damping medium (5) is high-viscosity silicone oil, damping grease or magnetorheological fluid.

4. The multi-fin staggered stacked damping hinge device according to claim 1, characterized in that: The sealing structure (7) includes a sealing gasket (71) and a pressure cap (72) sleeved on the rotating shaft (3). The pressure cap (72) is detachably connected to the fixed seat (1), and the pressure cap (72) presses the sealing gasket (71) against the end face of the damping assembly (4).

5. The multi-fin staggered stacked damping hinge device according to claim 1, characterized in that: The sleeve (41) and the fixed seat (1) are integrally formed, or the sleeve (41) is fixedly connected to the fixed seat (1) by bolts or buckles.

6. The multi-fin staggered stacked damping hinge device according to claim 1, characterized in that: The fixed fins (42) and movable fins (43) are made of metal or engineering plastic. The metal material is stainless steel or aluminum alloy, and the engineering plastic material is polytetrafluoroethylene or nylon.

7. The multi-fin staggered stacked damping hinge device according to claim 1, characterized in that: The movable arm (2) has a connecting part (21) at one end away from the rotating shaft (3), and the connecting part (21) has a mounting hole (22) for connecting with external components.

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