A computer hard disk rigid-flexible coupling vibration reduction device and method

Abstract

The present invention relates to the technical field of computer hardware vibration damping devices, and specifically discloses a computer hard disk rigid-flexible coupling vibration damping device and method, comprising a base, a disk box, a vibration damper, a fluid driver, and a volume adjustment mechanism. The base has a rectangular frame with a support seat and an axis hole at the rear side, and a rotating shaft at the rear side of the rectangular frame side wall of the disk box is assembled in the axis hole. Upper and lower vibration dampers are fixed in the upper and lower frame walls, and the vibration dampers are composed of an inner carrier plate, an outer lining plate, and an intermediate diamond-shaped ring bag. The fluid driver and the volume adjustment mechanism are installed on the front side of the rectangular frame. When the disk box is flipped down and closed, the fluid driver is pressed to fill the vibration damper with fluid. The volume adjustment mechanism ensures that the disk box still has elastic vibration when the vibration damper is full. During vibration, the driver alternately fills and draws fluid into and out of the vibration damper to adjust the vibration frequency of the disk box. This solution can compress the volume of the vibration damping system through the disk box flipping fluid drive linkage mechanism, support tool-free quick disassembly and assembly of the hard disk, and improve operation and maintenance efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of computer hardware vibration reduction devices, and in particular relates to a computer hard disk rigid-flexible coupling vibration reduction device and method. Background Art

[0002] Computer hard drive vibration damping devices are specialized devices used to isolate or absorb mechanical vibration energy and reduce the impact of external vibration on the hard drive. Their core goal is to suppress vibration transmission, preventing read and write errors, head damage, or data loss caused by resonance in the hard drive, thereby ensuring stable operation of the storage device under complex operating conditions. Current mainstream hard drive vibration damping technologies include passive damping solutions, mechanical suspension systems, and electromagnetic active damping. Passive damping solutions, such as rubber pads and silicone buffers, absorb vibration energy through material deformation but are only suitable for low-frequency, small-amplitude vibration scenarios. Mechanical suspension systems use spring-damper structures to provide cushioning, but suffer from large size and a fixed resonant frequency. Electromagnetic active damping uses electromagnetic actuators to offset vibration in real time. While they offer excellent dynamic performance, they rely on high-precision sensors and complex control algorithms, resulting in high cost and energy consumption.

[0003] These technologies are primarily used in low- and medium-frequency vibration environments, such as industrial equipment and automotive systems, but are insufficiently adaptable to multi-directional high-frequency vibration, random impact, and resonant frequency shifts. Rigidity and frequency are not adjustable: Traditional rubber / spring structures have a fixed stiffness and cannot dynamically adapt to changes in the vibration spectrum, making them susceptible to resonance caused by ambient frequency drift. Space and efficiency conflict: Mechanical suspension systems require 3-5 times the volume of a hard drive and exhibit poor low-frequency vibration isolation (<100Hz) (transmission efficiency >0.5). Active system limitations: While electromagnetic solutions can be frequency-adjusted, they consume high power (>10W), are complex, and struggle to handle multi-axial composite vibration. Lack of intelligent intervention: Existing technologies generally rely on passive responses and are unable to suppress sudden resonances through real-time feedback. Hard drive resonance is primarily caused by device vibration, the hard drive's own vibration, and other factors. Resonance can occur when the device's vibration frequency is the same as or close to the hard drive's natural frequency, or when the device's vibration intensity is excessive. Vibration of the hard drive's internal mechanical components during operation, as well as additional vibration caused by improper hard drive installation, can also cause hard drive resonance. Vibration of the chassis or rack caused by external vibration sources, as well as vibration interference from nearby equipment transmitted to the hard drive, can also cause hard drive resonance. Hard drive resonance can cause physical damage, data corruption, and performance degradation. The collision of the magnetic head with the platter can damage or scratch the magnetic media on the platter surface, and can also cause excessive wear, loosening, or even damage to mechanical components. Resonance can prevent the head from accurately positioning, leading to data read and write errors and loss, causing losses to the user. Hard drive read and write speeds can slow, and the system may experience frequent errors such as blue screens and freezes, impacting normal operation.

[0004] As data centers and edge computing applications increasingly demand higher vibration resistance from hard drives, traditional solutions are struggling to meet reliability requirements in high-frequency, multi-directional, and random vibration environments. Developing a compact vibration reduction system with dynamic frequency modulation is crucial for improving the adaptability of high-value storage devices in demanding environments. Summary of the Invention

[0005] The present invention addresses the resonance failure problem of computer hard disks in complex vibration environments. By integrating the rigid-flexible coupling vibration reduction structure design with active frequency regulation technology, a vibration reduction system with dynamic stiffness and damping self-adaptation capability is constructed to ensure the stable operation of data storage devices under strong vibration conditions.

[0006] The solution of the present invention to its technical problem is: a computer hard disk rigid-flexible coupling vibration damping device is adopted, including a base, a disk box and a vibration damper, and also including a fluid driver and a volume adjustment mechanism, the base includes a rectangular frame and a chassis, a pair of supports are fixed to the rear side of the rectangular frame and are respectively provided with disk box shaft holes; the disk box includes a rectangular frame and a vibration locking plate, the rectangular frame includes an upper rectangular frame and a lower rectangular frame, and a rotating shaft is fixed on the rear side of the left and right side walls of the rectangular frame, and the left and right rotating shafts are respectively assembled in the corresponding disk box shaft holes; upper and lower vibration dampers are respectively fixed on the inner walls of the upper and lower frames, the vibration damper includes an inner carrier plate and an outer lining plate, a diamond ring capsule is fixed between the inner carrier plate and the outer lining plate, and the outer lining plate is fixed to the inner wall of the upper frame or the lower frame. The hard disk is fixed together, and a positioning column or positioning groove is fixed on the surface of the inner carrier plate. The positioning column corresponds to the pit on the surface of one side of the hard disk, and the positioning groove corresponds to the protrusion on the other side of the hard disk; a fluid driver and a volume adjustment mechanism are respectively installed on the front side of the rectangular frame, and the fluid driver is connected to the upper and lower shock absorbers. When the disk box is flipped down and closed, its bottom presses the fluid driver, forcing the fluid to fill the two shock absorbers with fluid and fill them; the volume adjustment mechanism elastically locks the locking plate to ensure that the two shock absorbers are in a full state and the disk box still has elastic vibration, and during elastic vibration, the fluid driver is driven to alternately fill and suck out fluid from the two shock absorbers to change the fullness of the disk box, thereby adjusting the vibration frequency of the disk box.

[0007] Preferably, the fluid driver includes a vertical fluid driver a, which includes a planar sac, a main breathing pipe and a branch breathing pipe. The planar sac is sleeved on the front side of the chassis of the base, and the main breathing pipe is fixed to the middle of the chassis of the base. Two branch breathing pipes are respectively led out from the rear end of the main breathing pipe, one of which is connected to the lower shock absorber, and the other branch breathing pipe is connected to the upper shock absorber.

[0008] Preferably, the volume adjustment mechanism includes a lock box plate, a fixed plate and an arc-shaped spring piece. The fixed plate is fixed at the front end of the rectangular frame, and guide holes are respectively provided on the left and right sides of the fixed plate. The lock box plate is mounted on the bottom of the fixed plate, and sliders protrude outward from the left and right ends of the lock box plate respectively. The sliders are mounted in the guide holes, and two symmetrical arc-shaped spring pieces are installed at the bottom of the front side of the lock box plate.

[0009] Preferably, an ultra-thin linear vibration motor is installed between the two symmetrical arc-shaped springs on the left and right and at the lower part of the lock box plate, and a vibration sensor is installed on the inner carrier plate. The microcontroller receives the vibration signal of the vibration sensor. When the vibration signal is abnormal, the microcontroller drives the ultra-thin linear vibration motor to provide an active vibration signal. The active vibration signal will drive the front end of the disk box to vibrate up and down, thereby prompting the vertical fluid driver a to change the capacity of the fluid in and out of the upper and lower shock absorbers.

[0010] Preferably, the fixing plate includes a horizontal web in the middle and vertical wing plates on both sides. The wing plates are respectively fixed to both sides of the rectangular frame, and guide holes are respectively provided on the upper parts of the wing plates.

[0011] Preferably, the upper and lower rectangular frames are fixed together by connecting plates, a bottom plate is fixed in the middle of the lower rectangular frame, a top plate is fixed in the middle of the upper rectangular frame, and side plates are fixed in the area between the left and right adjacent connecting plates, and the bottom plate, top plate and side plates are respectively hollow structures.

[0012] Preferably, the fluid driver includes a transverse fluid driver b, which includes a Z-shaped seal, a reaction spring, a main breathing pipe and a branch breathing pipe. The Z-shaped seal is mounted on the inner wall of the front end of the rectangular frame of the base. The main breathing pipe is fixed to the middle of the chassis of the base. Two branch breathing pipes are respectively led out from the end of the main breathing pipe, one of which is connected to the lower shock absorber, and the other is connected to the upper shock absorber.

[0013] Preferably, it includes at least one group of extension components, which include a root connecting rod, a dynamic connecting rod and a middle connecting rod. A pressure rod shaft hole is provided on the rear side wall of the rectangular frame, and a strip hole is provided on the front side wall of the rectangular frame. The root connecting rod is sleeved in the pressure rod shaft hole, and both ends of the dynamic connecting rod are sleeved in the strip holes. Both ends of the root connecting rod are respectively hinged with rear pressure plates, and the other ends of the rear pressure plates are respectively hinged to the middle connecting rod. The left and right ends of the middle connecting rod are respectively hinged with front pressure plates, and the other ends of the front pressure plates are respectively hinged to the dynamic connecting rod; the left and right sides of the front push plate respectively include side plates, which are respectively provided with shaft holes and sleeved on both ends of the dynamic connecting rod.

[0014] A vibration reduction method based on the computer hard disk rigid-flexible coupling vibration reduction device is adopted, comprising the following steps:

[0015] Step 1: Install the hard drive in a disk enclosure with a vibration damper. Flip the enclosure to a closed position, triggering the fluid actuator to inject fluid into the vibration damper, causing the diamond-shaped annular bladder to expand to a preset pressure threshold, forming a suspended, non-contact support for the hard drive.

[0016] Step 2: Apply dynamic restraint force to the disk cartridge through the volume adjustment mechanism to establish elastic swing freedom of the disk cartridge around the rotation axis;

[0017] Step 3: Real-time acquisition of hard drive vibration signals. When a resonant characteristic frequency is detected in the vibration spectrum, the linear vibration motor is driven to generate anti-phase disturbances. This dynamically adjusts the amount of fluid in the shock absorber, switching the diamond-shaped annular capsule between a full and underfilled state, thereby simultaneously changing the stiffness of the vibration reduction system and the fluid damping characteristics.

[0018] Step 4: Based on the frequency domain distribution of vibration energy, adaptively select the low-frequency vibration isolation mode or the high-frequency damping mode. The low-frequency vibration isolation mode maintains the fluid volume of the shock absorber at 95-99% of the full state and controls the stiffness at 8-12N / mm. The high-frequency damping mode increases the fluid volume to the full state and the stiffness increases to 15-20N / mm.

[0019] Preferably, the triggering of the fluid driver in step 1 includes two implementation methods: vertical triggering: when the disc box is pressed down, the planar capsule is compressed, and the fluid is unidirectionally injected into the shock absorber through the breathing branch tube; horizontal triggering: when the disc box is flipped, the linkage extension component squeezes the Z-shaped capsule, and the reaction spring balances the fluid pressure fluctuation.

[0020] Beneficial effects of the present invention:

[0021] 1. Dynamic frequency adaptive adjustment: Through real-time control of the fluid injection volume of the diamond-shaped annular bladder (switching between full and semi-full states), the natural frequency of the vibration reduction system can be continuously adjusted within the range of ±30%, actively avoiding the risk of resonance.

[0022] 2. Non-contact suspension support protection: The combination of an expansion shock absorber and a hollow frame design allows the hard drive to be fully isolated and suspended from rigid components, effectively preventing damage from physical collisions.

[0023] 3. Compact Intelligent Operation and Maintenance Architecture: A fluid-driven linkage mechanism for disk cartridge flipping reduces the vibration damping system's size and supports tool-free removal and installation of hard drives, improving operation and maintenance efficiency. Leveraging the fluid-structure coupling damping properties of the diamond-shaped ring bladder, combined with the mechanical compensation of the reaction spring, the system maintains zero stiffness loss under continuous vibration conditions, extending its lifespan.

[0024] 4. Active anti-resonance intervention: Closed-loop control based on vibration sensors and linear motors identifies resonance characteristics and injects anti-phase vibration disturbances within 10ms, significantly reducing the resonance peak amplitude and significantly improving response speed compared to passive solutions. A microcontroller analyzes the vibration spectrum in real time and automatically switches between low-frequency vibration isolation (undersaturated state) and high-frequency damping (saturated state) operating modes, optimizing the flatness of the vibration transmissibility curve and adapting to complex scenarios such as industrial equipment and automotive applications.

[0025] 5. Multi-directional vibration coordinated processing: Through the mechanical linkage of the extension component and the Z-shaped capsule, the vertical vibration energy absorption rate is achieved while the horizontal vibration attenuation rate is improved, breaking through the bottleneck of traditional unidirectional vibration reduction technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the installation and use status of Example 1 of the present invention;

[0027] Figure 2 yes Figure 1 Schematic diagram of the middle disk box in the unfolded state;

[0028] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle volume control mechanism;

[0029] Figure 4 It is a block diagram of linkage regulation relationship;

[0030] Figure 5 It is a schematic diagram of the assembly relationship between the shock absorber and the disc box;

[0031] Figure 6 This is a schematic diagram of the assembly relationship between the shock absorber and the hard disk;

[0032] Figure 7 is a schematic diagram of the assembly relationship between the disk box and the gas component in Example 2;

[0033] Figure 8 It is a schematic diagram of the assembly relationship between the extension component, the volume adjustment mechanism and the base;

[0034] Figure 9 yes Figure 8 Schematic diagram from another angle;

[0035] Figure 10 It is a structural diagram of Example 3.

[0036] Reference numerals in the figure: base 1; disk tray 2; vibration damper 3; extension assembly 4; vertical fluid actuator 5a; horizontal fluid actuator 5b; volume adjustment mechanism 6; hard disk 7; rectangular frame 11; chassis 12; support 13; disk tray axis hole 14; pressure rod axis hole 15; strip hole 16; rectangular frame 21; rotation axis 22; bottom plate 23; top plate 24; side plate 25; vibration locking plate 26; inner carrier plate 31; outer lining plate 32; diamond ring capsule 3 3; positioning column 34; positioning slot 35; root connecting rod 41; dynamic connecting rod 42; middle connecting rod 43; rear pressure plate 44; front pressure plate 45; rolling sleeve 46; front push plate 47; planar capsule 51; main breathing pipe 52; branch breathing pipe 53; Z-shaped sealing capsule 54; reaction spring 55; lock box plate 61; slider 62; fixing plate 63; guide hole 64; fixing wire 65; guide hole 66; arc-shaped spring 67; ultra-thin linear vibration motor 68. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to the accompanying drawings and examples.

[0038] Example 1: A rigid-flexible coupling vibration reduction device for a computer hard disk, such as Figure 1 、 2 As shown in Figure 8, it mainly includes a base 1, a disk box 2, a vibration damper 3, an extension assembly 4, a fluid driver, and a volume adjustment mechanism 6. This device solves the technical problem of hard disk resonance caused by various factors. It can achieve hard disk vibration reduction while eliminating hard disk resonance factors, protecting hard disk reading and writing security.

[0039] like Figure 1 and Figure 9 As shown, the base 1 includes a rectangular frame 11, a chassis 12, a support 13 and a disk box shaft hole 14. The chassis 12 is fixed to the bottom of the rectangular frame 11, and the chassis 12 is fixed to the bottom plate of the host by screws. A pair of supports 13 are fixed to the rear side of the rectangular frame 11, and the disk box shaft holes 14 are respectively provided on the pair of supports 13.

[0040] like Figure 5 and Figure 7 As shown, the disc cassette 2 includes a rectangular frame 21, a rotating shaft 22, a bottom plate 23, a top plate 24, and side plates 25. The rectangular frame 21 includes an upper rectangular frame and a lower rectangular frame, which are fixed together by a connecting plate. The bottom plate 23 is fixed to the middle of the lower rectangular frame, and the top plate 24 is fixed to the middle of the upper rectangular frame. The side plates 25 are fixed to the areas between the left and right adjacent connecting plates. The bottom plate 23, top plate 24, and side plates 25 are each hollow structures. Rotating shafts 22 are fixed to the rear sides of the left and right side walls of the rectangular frame 21, respectively, and the left and right rotating shafts 22 are respectively assembled into the corresponding disc cassette shaft holes 14.

[0041] The upper and lower vibration dampers 3 are fixed to the inner walls of the upper and lower frames respectively. Figure 5 and Figure 6 As shown, the vibration damper 3 includes an inner carrier plate 31, an outer lining plate 32, a diamond-shaped annular capsule 33, positioning posts 34, and positioning slots 35. The diamond-shaped annular capsule 33 is fixed between the inner carrier plate 31 and the outer lining plate 32. The outer lining plate 32 is fixed to the inner wall of the upper or lower frame. Positioning posts 34 and positioning slots 35 are fixed to the surface of the inner carrier plate 31. The positioning posts 34 fit into the recesses (screw holes) on one side of the hard drive 7, and the positioning slots 35 fit into the protrusions (nuts) on the other side of the hard drive 7. When the diamond-shaped annular capsule 33 expands, it can be distributed and positioned along the upper and lower edges of the hard drive 7, ensuring that the hard drive 7 is suspended and supported.

[0042] A fluid driver and a volume adjustment mechanism 6 are respectively installed on the front side of the rectangular frame 11 . The fluid driver includes a vertical fluid driver 5 a (or a horizontal fluid driver 5 b , as in Example 2).

[0043] like Figure 2 As shown, the vertical fluid driver 5a includes a planar capsule 51, a main breathing pipe 52 and a branch breathing pipe 53. The planar capsule 51 is sleeved on the front side of the chassis 12 of the base 1, and the main breathing pipe 52 is fixed to the middle of the chassis 12 of the base 1. Figure 6 and Figure 8 As shown, the rear end of the main breathing pipe 52 leads to two breathing branches 53, one of which is connected to the lower vibration damper 3, and the other is connected to the upper vibration damper 3. When the disk tray 2 with the hard disk 7 is turned downward, it presses on the planar bladder 51, forcing the fluid inside the planar bladder 51 into the upper and lower vibration dampers 3, filling them up.

[0044] like Figure 3 and Figure 9As shown, the volume adjustment mechanism 6 includes a lock box plate 61, a slider 62, a fixed plate 63, a guide hole 64, a fixing wire 65, a guide hole 66, an arc-shaped spring piece 67, and an ultra-thin linear vibration motor 68. The fixed plate 63 is fixed to the front end of the rectangular frame 11. The fixed plate 63 includes a horizontal web in the middle and vertical wings on both sides. The wings are fixed to both sides of the rectangular frame 11 respectively. The upper portions of the wings are respectively provided with guide holes 64. The lock box plate 61 is mounted on the bottom of the fixed plate 63. Sliders 62 protrude outward from the left and right ends of the lock box plate 61 respectively. The slides 62 are mounted in the guide holes 64, so that the lock box plate 61 can slide back and forth along the bottom of the fixed plate 63. Two symmetrical arc-shaped spring pieces 67 are installed on the front bottom of the lock box plate 61, or an ultra-thin linear vibration motor 68 is installed between the two symmetrical arc-shaped spring pieces 67 and at the bottom of the lock box plate 61. When the disk tray 2 carrying the hard disk 7 flips downward to be parallel to the surface of the chassis 12, the lock plate 61 is pressed inward, and the two arc-shaped springs 67 at the inner end of the lock plate 61 are pressed against the upper side of the lock plate 26 at the lower edge of the front end of the disk tray 2, forming an elastic top-pressing relationship. Therefore, when the external vibration source causes vibration to the base 1, the disk tray 2 can elastically swing up and down around the rotating shaft 22. A vibration sensor is installed on the inner carrier plate 31, and a microcontroller receives the vibration signal from the vibration sensor. When the vibration signal is abnormal, the microcontroller drives the ultra-thin linear vibration motor 68 to provide an active vibration signal. The active vibration signal drives the front end of the disk tray 2 to vibrate up and down, thereby prompting the vertical fluid driver 5a to change the volume of fluid entering and exiting the upper and lower shock absorbers 3, thereby changing the vibration frequency of each shock absorber and eliminating the resonance problem.

[0045] Based on the above solution, the hard drive 7 is assembled in the disk box 2. The disk box 2 is flipped downward so that the disk box 2 is parallel to the surface of the bottom plate 12 of the base 1. The lock plate 61 is then pressed inward, causing the two curved springs 67 on the inner side of the lock plate 61 to press against the upper side of the lock plate 26 of the disk box 2. The downward movement of the disk box 2 drives the vertical fluid driver 5a to compress, causing the fluid in the vertical fluid driver 5a to flow along the main breathing pipe 52 and the branch breathing pipe 53 into the upper and lower shock absorbers 3, respectively, causing the upper and lower shock absorbers 3 to begin to expand. After expansion, the upper and lower shock absorbers 3 are clamped and supported on the upper and lower edges of the hard drive 7, not only clamping and positioning the hard drive 7, but also keeping the hard drive 7 suspended. When the industrial equipment vibrates during operation or the main chassis vibrates, the upper and lower shock absorbers 3 can effectively isolate the vibration. At the same time, when the disk box 2 carrying the hard disk 7 vibrates downward and upward due to vibration of the equipment or the host case, the planar capsule 51 can be squeezed, so that the fluid in the planar capsule 51 is continuously filled into the upper and lower shock absorbers 3 and continuously sucked out of the upper and lower shock absorbers 3 in small amounts. This method of continuously changing the fluid capacity in the upper and lower shock absorbers 3 allows the upper and lower shock absorbers 3 to be in a full state or an underfull state (the underfull state is 95-99% of the full state of the fluid container) respectively, and switch between the two states. When the diamond-shaped annular capsule 33 is full, the internal air pressure is high, and the stiffness of the diamond-shaped annular capsule 33 will increase accordingly. According to the principle of dynamics, the increase in stiffness will increase the natural frequency of the vibration reduction system, and the increase in natural frequency will cause the vibration reduction pad to increase its sensitivity to high-frequency vibrations and enhance its filtering ability for low-frequency vibrations, thereby changing the received vibration frequency characteristics; when the diamond-shaped annular capsule 33 is half full, the internal air pressure is low, the stiffness of the diamond-shaped annular capsule 33 is relatively small, the natural frequency of the vibration reduction system is reduced, the sensitivity to low-frequency vibrations is increased, and the filtering ability for high-frequency vibrations is weakened, making the received vibration frequency characteristics different from those in the full state. On the other hand, the damping effect changes: when a full diamond-shaped capsule 33 is subjected to vibration impact, the movement of fluid molecules is more intense, the deformation of the diamond-shaped capsule 33 is relatively small, and the damping effects of friction between the fluid and the inner wall of the diamond-shaped capsule 33 and molecular friction within the fluid are relatively weak. Since the damping effect plays an important role in vibration attenuation and energy dissipation, the weakening of damping will change the characteristics of vibration transmission, thereby affecting the received vibration frequency. However, when a semi-full diamond-shaped capsule 33 vibrates, the deformation of the diamond-shaped capsule 33 is greater, the movement and mutual collision of fluid molecules are more frequent, and the damping effects of friction between the fluid and the inner wall of the diamond-shaped capsule 33 and molecular friction within the fluid are enhanced. This enhanced damping effect can more effectively dissipate vibration energy and cause vibration to decay faster, thereby changing the received vibration frequency characteristics, making it more conducive to suppressing vibration transmission and response to a certain extent.

[0046] The main features of the above scheme are: using a vibration damper to ensure that the hard disk does not contact any rigid components, ensuring a reliable vibration damping effect on the hard disk; the fluid driver is linked to the vibration damper, and before the disk box is pressed down, the vibration damper is in a naturally contracted state to ensure smooth loading and unloading of the hard disk. When the disk box is pressed down, the fluid driver is prompted to press the fluid into the vibration damper, and the vibration damper expands to position the hard disk and provide a vibration damping function; an external vibration source is used to trigger the volume adjustment mechanism to intervene in the degree of compression of the fluid by the fluid driver, and then, when the vibration damper is expanded, the expansion degree is appropriately changed to a full state or a semi-full state, so as to achieve the purpose of passively changing the vibration frequency of the vibrator; the linear vibration motor can choose the active triggering time to actively intervene in the fluid driver to achieve the purpose of actively changing the vibration frequency of the vibrator, such as Figure 4 It shows the linkage adjustment relationship between the relevant components of the present invention.

[0047] The process for using this solution is as follows: S1. Device Pre-Assembly: Secure the base 1 to the host's inner bottom plate with screws, ensuring that the support 13 is vertically aligned with the disk enclosure's axis hole 14. This creates a rigid connection between the vibration damping system and the host, providing a stable foundation for subsequent dynamic adjustment of the disk enclosure and improving the vibration transmission path optimization rate by 20%. S2. Non-Contact Hard Drive Installation: Push the hard drive 7 into the frame of the disk enclosure 2, ensuring that the recesses / protrusions on both sides of the hard drive precisely align with the positioning posts 34 / slots 35 of the vibration damper 3. This creates a three-dimensional elastic constraint between the hard drive and the enclosure, making the installation tool-free and time-efficient. The initial contraction of the diamond-shaped annular bladder 33 leaves a 2-3mm assembly clearance. S3. Enclosure Flipping and Fluid Actuation: Flip the enclosure 2 downward about its axis 22 until it is parallel to the chassis 12, triggering the compression of the planar bladder 51 or the Z-shaped bladder 54. Fluid is then injected into the upper and lower vibration dampers 3 through the breathing branch 53, causing the diamond-shaped annular bladder 33 to expand to its full state (pressure 0.15-0.25 MPa), leaving the hard drive suspended in the air. S4 Volume Adjustment Mechanism Locking: Pressing the lock plate 61 forward causes the curved spring 67 to elastically compress the vibration lock plate 26 at the front end of the disc cartridge. This creates a dynamic hinge constraint, allowing the disc cartridge to oscillate slightly (±3°) about the rotation axis 22. Simultaneously, the ultra-thin linear vibration motor 68 is preloaded with a 5-10N preload force, keeping the system's natural frequency deviation tolerance within ±5Hz. S5 Vibration Reduction System Activation: The vibration sensor and microcontroller are activated, completing a system self-test (including fluid pressure calibration and motor response testing). Active closed-loop control for vibration signal frequency analysis is established, identifying resonant frequency bands (e.g., 120-250Hz) within 20ms and triggering anti-phase vibration intervention. S6 dynamic operation adjustment maintains the damper 3 in an underfilled state (95% fluid volume), reducing the stiffness of the diamond-shaped ring bladder 33 to 8-12 N / mm. Low-frequency vibrations below 200 Hz are preferentially suppressed. While the damper 3 is maintained in a fully filled state, its stiffness is increased to 15-20 N / mm, absorbing vibration energy in the high-frequency range of 500-2000 Hz. S7 maintenance and disassembly: After unlocking the lock plate 61, the disc 2 is flipped upward, causing the hard drive 7 to relax as the damper 3 contracts. Fluid then flows back to the drive bladder through the breathing branch 53, restoring the initial assembly state within 5 seconds. This system supports over 200 assembly and disassembly cycles throughout the year without performance degradation. These steps form a comprehensive protection chain: "mechanical action triggers fluid distribution → dynamic adjustment of stiffness and damping → multi-stage dissipation of vibration energy → intelligent feedback to suppress resonance." Compared to traditional solutions, this solution significantly improves shock resistance and data security, and significantly reduces hard drive failure rates.

[0048] Example 2: Based on the device of Example 1, the following Figure 8 and Figure 9 The transverse fluid driver 5b shown, as Figure 8 and Figure 9As shown, the transverse fluid actuator 5b includes a Z-shaped capsule 54, a reaction spring 55, a main breathing pipe 52, and a branch breathing pipe 53. The Z-shaped capsule 54 is mounted on the inner wall of the front end of the rectangular frame 11 of the base 1. The main breathing pipe 52 is fixed to the middle of the bottom plate 12 of the base 1. Two branch breathing pipes 53 are led out from the end of the main breathing pipe 52. One branch breathing pipe 53 is connected to the lower shock absorber 3, and the other branch breathing pipe 53 is connected to the upper shock absorber 3.

[0049] At the same time, using Figure 7-9 A set of extension components 4 is shown. The extension component 4 includes a connecting rod 41, a dynamic connecting rod 42, a middle connecting rod 43, a rear pressure plate 44, a front pressure plate 45, a rolling sleeve 46 and a front push plate 47. The left and right side walls of the rear portion of the rectangular frame 11 are respectively provided with pressure rod shaft holes 15, and the left and right side walls of the front portion of the rectangular frame 11 are respectively provided with strip holes 16. The connecting rod 41 is sleeved in the pressure rod shaft hole 15, and the two ends of the dynamic connecting rod 42 are sleeved in the strip holes 16. The two ends of the connecting rod 41 are respectively hinged to the rear pressure plate 44, and the other end of the rear pressure plate 44 is respectively hinged to the middle connecting rod 43. The left and right ends of the middle connecting rod 43 are respectively hinged to the front pressure plate 45, and the other end of the front pressure plate 45 is respectively hinged to the dynamic connecting rod 42. A roller sleeve 46 is mounted on the outside of the center link 43. The left and right sides of the front push plate 47 each include a side plate, each with an axial hole. These axial holes fit over the left and right ends of the dynamic link 42. When the disk cartridge 2 is inverted downward, the roller sleeve 46 is first pressed downward. This downward movement of the roller sleeve 46 causes the rear pressure plate 44 and the front pressure plate 45 to shift from an inclined position to a horizontal position, thereby driving the front push plate 47 forward. This forward movement of the front push plate 47 drives the Z-shaped capsule 54 of the transverse fluid actuator 5b to contract. Reaction springs 55 are mounted on the left and right sides of the Z-shaped capsule 54, supporting the inner surface of the front end wall of the rectangular frame 11, which is closed to the front end of the front push plate 47. Compared to Example 1, this embodiment can absorb both vertical and horizontal vibrations of the device or main chassis.

[0050] Example 3: Based on Example 2, Figure 10 Two sets of extension components 4 are shown.

[0051] Example 4: A vibration reduction method based on the vibration reduction device of Examples 1-3 is adopted, comprising the following steps:

[0052] S1. Install the hard disk 7 in the disk box 2 with the shock absorber 3, flip the disk box 2 to the closed state, trigger the fluid driver to inject fluid into the shock absorber 3, and expand the diamond-shaped ring bag 33 to the preset pressure threshold, forming a suspended non-contact support for the hard disk 7.

[0053] S2. Dynamic constraint forces are applied to the disc cartridge 2 via the volume adjustment mechanism 6, establishing elastic swing freedom for the disc cartridge 2 about the rotation axis 22. The fluid actuator is triggered in two ways: vertically: when the disc cartridge 2 is pressed downward, the planar capsule 51 is compressed, and fluid is injected unidirectionally into the shock absorber 3 via the breathing branch 53; and horizontally: when the disc cartridge 2 is flipped, the extension assembly 4 is linked to squeeze the Z-shaped capsule 54, and the reaction spring 55 balances fluid pressure fluctuations. During the horizontal triggering process, the extension assembly 4 is linked as follows: when the disc cartridge 2 is pressed downward, the roller sleeve 46 is pressed to drive the forward push plate 47 forward, compressing the Z-shaped capsule 54 to 60-70% of its original length; and the reaction spring 55 stores 35-45% of the mechanical energy for dynamic compensation of fluid pressure during the vibration return stroke.

[0054] S3. Real-time acquisition of hard drive vibration signals. When a resonant characteristic frequency is detected in the vibration spectrum, the ultra-thin linear vibration motor 68 is driven to generate anti-phase disturbances, dynamically adjusting the fluid volume within the shock absorber 3, switching the diamond-shaped annular bladder 33 between a full and underfilled state, and simultaneously changing the stiffness of the vibration damping system and the fluid damping characteristics. Dynamic restraint is applied by applying a preload of 5-10N to the disk cartridge 2 via the curved spring 67, limiting its swing amplitude to within ±3°.

[0055] S4. Based on the frequency domain distribution of vibration energy, adaptively select low-frequency vibration isolation mode or high-frequency damping mode, wherein the low-frequency vibration isolation mode maintains the fluid volume of the shock absorber 3 at 95-99% of the full state, and the stiffness is controlled at 8-12N / mm; the high-frequency damping mode increases the fluid volume to the full state, and the stiffness is increased to 15-20N / mm. The generation of anti-phase disturbance includes: obtaining the vibration acceleration signal through the vibration sensor, and extracting the main frequency component through fast Fourier transform; when the deviation between the main frequency component and the natural frequency of the system is less than 5%, it is determined to be a resonance risk, and the ultra-thin linear vibration motor 68 is started to generate an active intervention signal with an amplitude of 3-5μm and a phase difference of 180°. The stiffness adjustment of the diamond ring capsule 33 is achieved by fluid pressure control, satisfying the relationship:

[0056]

[0057] Among them, K is the real-time stiffness value, E is the elastic modulus of the capsule material, t is the capsule wall thickness, ν is the Poisson's ratio, P is the current fluid pressure, P0 is the reference pressure, and the stiffness adjustment range covers 8-20N / mm.

[0058] S5. Maintenance phase operation: Unlock the volume adjustment mechanism 6 and flip the disc box 2, the fluid drive automatically recovers more than 95% of the fluid in the shock absorber 3; after the diamond ring capsule 33 shrinks, a 1.5-2mm safety gap is formed with the surface of the hard disk 7, supporting tool-free disassembly.

[0059] The above specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A computer hard disk rigid-flexible coupling vibration damping device, comprising a base (1), a disk box (2) and a shock absorber (3), characterized in that: The invention also includes a fluid driver and a volume adjustment mechanism (6), wherein the base (1) includes a rectangular frame (11) and a bottom plate (12), a pair of supports (13) are fixed to the rear side of the rectangular frame (11) and are respectively provided with a disk box shaft hole (14); the disk box (2) includes a rectangular frame (21) and a locking plate (26), the rectangular frame (21) includes an upper rectangular frame and a lower rectangular frame, and a rotating shaft (22) is respectively fixed on the rear side of the left and right side walls of the rectangular frame (21), and the left and right rotating shafts (22) are respectively assembled in the corresponding disk box shaft holes (14); and a rotating shaft (22) is respectively fixed on the inner wall of the upper and lower frames. There are two upper and lower shock absorbers (3), the shock absorber (3) includes an inner carrier plate (31) and an outer lining plate (32), a diamond ring bag (33) is fixed between the inner carrier plate (31) and the outer lining plate (32), the outer lining plate (32) is fixed to the inner wall of the upper frame or the lower frame, a positioning column (34) or a positioning groove (35) is fixed on the surface of the inner carrier plate (31), the positioning column (34) is corresponding to the pit on the surface of one side of the hard disk (7), and the positioning groove (35) is corresponding to the protrusion on the other side of the hard disk (7); a fluid driver and a volume adjustment mechanism are respectively installed on the front side of the rectangular frame (11) (6), the fluid driver is connected to the upper and lower shock absorbers (3), and when the disk box (2) is turned down and closed, its bottom presses the fluid driver, forcing the fluid to fill the two shock absorbers and fill them up; the volume adjustment mechanism (6) elastically locks the locking plate (26), ensuring that the two shock absorbers (3) are in a full state and the disk box (2) still has elastic vibration, and during elastic vibration, the fluid driver is driven to alternately fill and suck out the fluid from the two shock absorbers (3) to change the fullness of the disk box (2), thereby adjusting the vibration frequency of the disk box (2); the fluid driver The device comprises a transverse fluid driver (5b), which comprises a Z-shaped sealing bag (54), a reaction spring (55), a main breathing pipe (52) and a branch breathing pipe (53). The Z-shaped sealing bag (54) is sleeved on the inner wall of the front end of the rectangular frame (11) of the base (1). The main breathing pipe (52) is fixed to the middle of the chassis (12) of the base (1). Two branch breathing pipes (53) are respectively led out from the end of the main breathing pipe (52), one of the branch breathing pipes (53) is communicated with the lower shock absorber (3), and the other branch breathing pipe (53) is communicated with the upper shock absorber (3).The invention comprises at least one group of extension components (4), wherein the extension component (4) comprises a root connecting rod (41), a dynamic connecting rod (42), a middle connecting rod (43) and a front push plate (47). A pressure rod shaft hole (15) is provided on the rear side wall of the rectangular frame (11), and a strip hole (16) is provided on the front side wall of the rectangular frame (11). The root connecting rod (41) is sleeved in the pressure rod shaft hole (15), and both ends of the dynamic connecting rod (42) are sleeved in the strip hole (16). Both ends of the root connecting rod (41) are respectively hinged to a rear pressure plate (44), and the other end of the rear pressure plate (44) is respectively hinged to the middle connecting rod (43). The left and right ends of the middle connecting rod (43) are respectively hinged to a front pressure plate (45), and the other end of the front pressure plate (45) is respectively hinged to the dynamic connecting rod (42). The left and right sides of the front push plate (47) respectively comprise side plates, and the side plates are respectively provided with shaft holes and sleeved on both ends of the dynamic connecting rod (42).

2. The computer hard disk rigid-flexible coupling vibration reduction device according to claim 1, characterized in that: The volume adjustment mechanism (6) includes a lock box plate (61), a fixed plate (63) and an arc-shaped spring piece (67). The fixed plate (63) is fixed at the front end of the rectangular frame (11). Guide holes (64) are respectively provided on the left and right sides of the fixed plate (63). The lock box plate (61) is sleeved on the bottom of the fixed plate (63). Slide blocks (62) protrude outward from the left and right ends of the lock box plate (61). The slide blocks (62) are sleeved in the guide holes (64). Two symmetrical arc-shaped spring pieces (67) are installed at the bottom of the front side of the lock box plate (61).

3. The computer hard disk rigid-flexible coupling vibration reduction device according to claim 2, characterized in that: The volume adjustment mechanism (6) includes a fixed plate (63), the fixed plate (63) including a central transverse web and two vertical wing plates, the wing plates being fixed to two sides of the rectangular frame (11), and the upper portions of the wing plates being provided with guide holes (64).

4. The computer hard disk rigid-flexible coupling vibration reduction device according to claim 1, characterized in that: The upper and lower rectangular frames are fixed together by connecting plates. A bottom plate (23) is fixed to the middle of the lower rectangular frame, a top plate (24) is fixed to the middle of the upper rectangular frame, and side plates (25) are fixed to the area between the left and right adjacent connecting plates. The bottom plate (23), top plate (24) and side plates (25) are respectively hollow structures.

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