Computer hard disk rigid-flexible coupling damping device and method

Abstract

The invention relates to the technical field of computer hardware damping devices, and particularly discloses a computer hard disk rigid-flexible coupling damping device and method.The computer hard disk rigid-flexible coupling damping device comprises a base, a disk box, a damper, a fluid driver and a container adjusting mechanism, a supporting seat and a shaft hole are formed in the rear side of a rectangular frame of the base, and a rotating shaft on the rear side of the side wall of the rectangular frame of the disk box is assembled in the shaft hole; an upper shock absorber and a lower shock absorber are fixed in the upper frame wall and the lower frame wall, and each shock absorber is composed of an inner carrier plate, an outer lining plate and a middle rhombic ring bag. The fluid driver and the container adjusting mechanism are installed on the front side of the rectangular frame, the disc box presses the fluid driver to enable fluid to be filled into the shock absorber when turning downwards to be closed, the container adjusting mechanism ensures that the disc box still has elastic vibration performance in the full state of the shock absorber, and the driver alternately fills and sucks fluid into and out of the shock absorber during vibration to adjust the vibration frequency of the disc box. According to the scheme, the volume of the damping system can be compressed through the disc box turnover fluid driving linkage mechanism, tool-free quick disassembly and assembly of the hard disk are supported, and the operation and maintenance efficiency is improved.

Description

Technical Field

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

[0002] A computer hard disk vibration damping device is a special device used to isolate or absorb mechanical vibration energy and reduce the impact of external vibration on the hard disk. Its core objective is to avoid read-write errors, head damage, or data loss caused by resonance of the hard disk by suppressing vibration transmission, thereby ensuring the stable operation of the storage device under complex working conditions. The existing mainstream hard disk vibration damping technologies include passive vibration damping solutions, mechanical suspension systems, and electromagnetic active vibration damping. Passive vibration damping solutions such as rubber pads and silicone buffer blocks absorb vibration energy through material deformation, but are only suitable for low-frequency and small-amplitude vibration scenarios; mechanical suspension systems use spring-damper structures to provide buffering, but have the defects of large volume and fixed resonance frequency; electromagnetic active vibration damping cancels vibration in real time through electromagnetic actuators. Although it has excellent dynamic performance, it relies on high-precision sensors and complex control algorithms, with high costs and large energy consumption.

[0003] The above technologies are mostly used in medium-low frequency vibration environments such as industrial equipment and vehicle-mounted systems, but are insufficient in adapting to multi-directional high-frequency vibration, random shock, and resonance frequency shift. Rigidity and frequency non-adjustability: The rigidity of traditional rubber / springs structures is fixed and cannot dynamically adapt to changes in the vibration spectrum, easily causing resonance due to environmental frequency drift; contradiction between space and efficiency: Mechanical suspension systems need to occupy 3-5 times the volume of the hard disk, and have poor low-frequency vibration isolation (<100Hz) effects (transmission ratio >0.5); limitations of active systems: Although the electromagnetic solution can adjust the frequency, it has high power consumption (>10W), complex structures, and is difficult to handle multi-axial composite vibrations; lack of intelligent intervention: Existing technologies are generally passive responses and cannot suppress sudden resonance through real-time feedback. The main reasons for hard disk resonance are caused by equipment vibration, hard disk self-vibration, and other factors. When the vibration frequency of the equipment itself is the same as, close to, or the vibration intensity of the equipment is too large, it may cause the hard disk to resonate; the vibration of internal mechanical components during hard disk operation, as well as additional vibration caused by improper hard disk installation, may trigger hard disk resonance; the vibration of the chassis or rack affected by external vibration sources, and the vibration interference of nearby equipment transmitted to the hard disk, may cause the hard disk to resonate. Hard disk resonance will bring hazards such as physical damage, data damage, and performance degradation. The head colliding with the disk will cause damage and scratches to the magnetic medium on the disk surface, and will also cause excessive wear, looseness, and even damage to mechanical components. Resonance makes the head unable to accurately position, resulting in data read-write errors and loss, causing losses to users. The hard disk read-write speed becomes slow, and the system may experience frequent errors such as blue screens and crashes, affecting normal operation.

[0004] With the increasing requirements for the anti-vibration performance of hard disks in scenarios such as data centers and edge computing, traditional solutions are difficult to meet the reliability requirements in high-frequency, multi-directional, and random vibration environments. Developing a compact vibration damping system with dynamic frequency adjustment is of urgent significance for improving the adaptability of high-value storage devices under harsh working conditions. Summary of the Invention

[0005] In view of the resonance failure problem of computer hard disks in complex vibration environments, the present invention constructs a vibration damping system with dynamic stiffness and damping adaptability by integrating a rigid-flexible coupling vibration damping structure design and an active frequency adjustment technology, so as to ensure the stable operation of data storage devices under strong vibration conditions.

[0006] The solution of the present invention to solve its technical problems is: adopting a rigid-flexible coupling vibration damping device for a computer hard disk, which includes a base, a disk case, and vibration dampers, and also includes a fluid driver and a volume adjustment mechanism. The base includes a rectangular frame and a chassis, and a pair of supports are fixed to the rear side of the rectangular frame and are respectively provided with disk case shaft holes; the disk case includes a rectangular frame and a vibration locking plate. The rectangular frame includes an upper rectangular border and a lower rectangular border. Rotating shafts are respectively fixed to the rear sides of the left and right side walls of the rectangular frame, and the left and right two rotating shafts are respectively assembled in the corresponding disk case shaft holes; upper and lower vibration dampers are respectively fixed to the inner walls of the upper and lower borders. The vibration damper includes an inner carrier plate and an outer lining plate, and a diamond-shaped annular bladder is fixed between the inner carrier plate and the outer lining plate. The outer lining plate is fixed to the inner wall of the upper border or the lower border, and a positioning post or a positioning groove is fixed to the surface of the inner carrier plate. The positioning post is correspondingly sleeved with the pit on one side surface of the hard disk, and the positioning groove is correspondingly sleeved with the protrusion on the other side surface of the hard disk; a fluid driver and a volume adjustment mechanism are respectively installed on the front side of the rectangular frame. The fluid driver is communicated with the upper and lower two vibration dampers. When the disk case is turned down and closed, its bottom presses against the fluid driver, forcing the fluid to be filled into the two vibration dampers to be full; the volume adjustment mechanism elastically locks the vibration locking plate to ensure that when the two vibration dampers are in a full state, the disk case still has elastic vibration, and when elastically vibrating, it drives the fluid driver to alternately fill the fluid into the two vibration dampers and suck out the fluid, so as to change the fullness degree of the disk case, and further adjust the vibration frequency of the disk case.

[0007] Preferably, the fluid driver includes a vertical fluid driver a. The vertical fluid driver a includes a planar bladder, a breathing main pipe, and breathing branch pipes. The planar bladder is sleeved on the front side of the chassis of the base. The breathing main pipe is fixed to the middle of the chassis of the base. Two breathing branch pipes are respectively led out from the rear end of the breathing main pipe. One breathing branch pipe is communicated with the lower vibration damper, and the other breathing branch pipe is communicated with the upper vibration damper.

[0008] Preferably, the container adjusting mechanism includes a lock box plate, a fixing plate and an arc-shaped elastic sheet. The fixing plate is fixed at the front end of the rectangular frame. Guide holes are respectively arranged on the left and right sides of the fixing plate. The lock box plate is sleeved at the bottom of the fixing plate. Sliders respectively protrude outward from the left and right ends of the lock box plate, and the sliders are sleeved in the guide holes. Two symmetric arc-shaped elastic sheets 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 symmetric arc-shaped elastic sheets on the left and right and at the lower part of the lock box plate. 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 disc box to vibrate up and down, thereby prompting the vertical fluid driver a to change the capacity of the fluid entering and exiting the upper and lower shock absorbers.

[0010] Preferably, the fixing plate includes a middle transverse web plate and two vertical wing plates on both sides. The wing plates are respectively fixed on both sides of the rectangular frame, and guide holes are respectively arranged 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 areas between adjacent connecting plates on the left and right. The bottom plate, the top plate and the side plates are respectively of a hollow structure.

[0012] Preferably, the fluid driver includes a transverse fluid driver b. The transverse fluid driver b includes a Z-shaped capsule, a reaction spring, a breathing main pipe and breathing branch pipes. The Z-shaped capsule is sleeved at the inner wall position of the front end of the rectangular frame of the base. The breathing main pipe is fixed in the middle of the chassis of the base. Two breathing branch pipes are respectively led out from the end of the breathing main pipe. One breathing branch pipe is communicated with the lower shock absorber, and the other breathing branch pipe is communicated with the upper shock absorber.

[0013] Preferably, it includes at least one set of extension components, which includes a root connecting rod, a moving connecting rod and a middle connecting rod. A pressure rod shaft hole is arranged on the rear side wall of the rectangular frame, and a strip-shaped hole is arranged 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 moving connecting rod are sleeved in the strip-shaped hole. Rear pressing plates are respectively hinged at both ends of the root connecting rod, and the other ends of the rear pressing plates are respectively hinged to the middle connecting rod. Front pressing plates are respectively hinged at the left and right ends of the middle connecting rod, and the other ends of the front pressing plates are respectively hinged to the moving connecting rod; both sides of the front push plate respectively include side plates, and shaft holes are respectively arranged on the side plates and sleeved at both ends of the moving connecting rod.

[0014] An anti-vibration method using the computer hard disk rigid-flexible coupling anti-vibration device includes the following steps: Step 1: Install the hard disk in a disk box with shock absorbers, flip the disk box to the closed state, trigger the fluid driver to inject fluid into the shock absorbers, and expand the diamond-shaped annular bladder to a preset pressure threshold to form a suspended non-contact support for the hard disk. Step 2: Apply a dynamic binding force to the disk box through the volume adjustment mechanism to establish an elastic swing degree of freedom for the disk box around the rotating shaft. Step 3: Real-time collect the vibration signals of the hard disk. When the resonance characteristic frequency is detected in the vibration spectrum, drive the linear vibration motor to generate an anti-phase disturbance, dynamically adjust the fluid volume in the shock absorber, and switch the diamond-shaped annular bladder between the full state and the under-full state, synchronously changing the stiffness and fluid damping characteristics of the shock absorption system. Step 4: Based on the vibration energy frequency domain distribution, adaptively select the low-frequency vibration isolation mode or the high-frequency damping mode. Among them, in the low-frequency vibration isolation mode, the fluid volume of the shock absorber is maintained at 95 - 99% of the full state, and the stiffness is controlled at 8 - 12 N / mm; in the high-frequency damping mode, the fluid volume is increased to the full state, and the stiffness is increased to 15 - 20 N / mm.

[0015] Preferably, the triggering of the fluid driver in Step 1 includes two implementation methods. Vertical triggering: When the disk box is pressed down, the flat bladder is compressed, and fluid is unidirectionally injected into the shock absorber through the breathing branch pipe; Horizontal triggering: When the disk box is flipped, the linkage extension component squeezes the Z-shaped bladder, and the fluid pressure fluctuation is balanced by the reaction spring.

[0016] Advantages of the present invention: 1. Dynamic frequency adaptive adjustment: Through real-time regulation of the fluid injection volume of the diamond-shaped annular bladder (switching between the full / half-full state), the natural frequency of the shock absorption system can be continuously adjusted within the range of ±30%, actively avoiding the resonance risk.

[0017] 2. Non-contact suspended support protection: Adopt a combined design of an expansion type shock absorber and a hollowed-out frame to achieve full isolation and suspension support for the hard disk and rigid components, effectively preventing physical collision damage.

[0018] 3. Compact intelligent operation and maintenance architecture: Through the fluid drive linkage mechanism of the disk box flip, the volume of the shock absorption system is compressed, and it supports quick disassembly and assembly of the hard disk without tools, improving the operation and maintenance efficiency. Utilizing the fluid-solid coupling damping characteristics of the diamond-shaped annular bladder and combining the mechanical compensation of the reaction spring, the system can maintain no stiffness attenuation under continuous vibration conditions, extending the service life.

[0019] 4. Active anti-resonance intervention: Based on the closed-loop control of the vibration sensor and the linear motor, the resonance characteristics can be identified and anti-phase vibration disturbance can be injected within 10 ms, significantly reducing the amplitude of the resonance peak, and the response speed is significantly improved compared with the passive solution. By analyzing the vibration spectrum characteristics in real time through the microcontroller, automatically switch between the low-frequency vibration isolation (under-full state) and high-frequency damping (full state) dual working modes to optimize the flatness of the vibration transfer rate curve and adapt to complex scenarios such as industrial equipment and vehicles.

[0020] 5. Multi - directional vibration collaborative processing: Through the mechanical linkage between the stretching component and the Z - shaped capsule, while achieving the vertical vibration energy absorption rate, the horizontal vibration attenuation rate is improved, breaking through the bottleneck of traditional single - direction vibration reduction technology. Brief Description of the Drawings

[0021] Figure 1 is a schematic diagram of the installation and use state of Embodiment 1 of the present invention; Figure 2 is Figure 1 a schematic diagram of the unfolded state of the middle disc cartridge; Figure 3 is Figure 2 a schematic diagram of the structure of the middle container control mechanism; Figure 4 is a block diagram of the linkage adjustment relationship; Figure 5 is a schematic diagram of the assembly relationship between the shock absorber and the disc cartridge; Figure 6 is a schematic diagram of the assembly relationship between the shock absorber and the hard disk; Figure 7 is a schematic diagram of the assembly relationship between the disc cartridge and the gas component in Embodiment 2; Figure 8 is a schematic diagram of the assembly relationship between the stretching component and the container adjustment mechanism and the base; Figure 9 is Figure 8 another perspective schematic diagram of; Figure 10 is a schematic diagram of Embodiment 3.

[0022] Reference numerals in the figures: Base 1; Disc cartridge 2; Shock absorber 3; Stretching component 4; Vertical fluid driver 5a; Transverse fluid driver 5b; Container adjustment mechanism 6; Hard disk 7; Rectangular frame 11; Chassis 12; Support 13; Disc cartridge shaft hole 14; Pressure bar shaft hole 15; Strip hole 16; Rectangular frame 21; Rotating shaft 22; Bottom plate 23; Top plate 24; Side plate 25; Vibration - locking plate 26; Inner carrier plate 31; Outer lining plate 32; Rhombic ring capsule 33; Positioning column 34; Positioning groove 35; Root connecting rod 41; Moving 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; Respiratory main pipe 52; Respiratory branch pipe 53; Z - shaped capsule 54; Reaction spring 55; Locking box plate 61; Slide block 62; Fixed plate 63; Guide hole 64; Fixed wire 65; Guide hole 66; Arc - shaped elastic piece 67; Ultra - thin linear vibration motor 68. Detailed Embodiments

[0023] The present invention will be further described below in conjunction with the drawings and embodiments.

[0024] Embodiment 1: A computer hard disk rigid - flexible coupling vibration reduction device, such asFigure 1 , 2 As shown in FIGS. 8, it mainly includes a base 1, a disc cartridge 2, a shock absorber 3, an extension assembly 4, a fluid driver, and a volume adjustment mechanism 6, etc. This device solves the technical problem of hard disk resonance caused by various factors, eliminates the resonance factors of the hard disk while achieving shock absorption of the hard disk, and protects the safety of hard disk reading and writing.

[0025] As Figure 1 and Figure 9 shown, the base 1 includes a rectangular frame 11, a chassis 12, a support 13, and a disc cartridge shaft hole 14. The chassis 12 is fixed to the bottom of the rectangular frame 11, and the chassis 12 is fixed to the inner bottom plate of the host by screws. A pair of supports 13 are fixed to the rear side of the rectangular frame 11, and disc cartridge shaft holes 14 are respectively provided on the pair of supports 13.

[0026] As Figure 5 and Figure 7 shown, the disc cartridge 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 border and a lower rectangular border, and the upper and lower rectangular borders are fixed together by connecting plates. The bottom plate 23 is fixed to the middle of the lower rectangular border, the top plate 24 is fixed to the middle of the upper rectangular border, and side plates 25 are fixed in the area between adjacent left and right connecting plates. The bottom plate 23, the top plate 24, and the side plates 25 are respectively of a hollow structure. Rotating shafts 22 are respectively fixed to the rear sides of the left and right side walls of the rectangular frame 21, and the left and right two rotating shafts 22 are respectively assembled in the corresponding disc cartridge shaft holes 14.

[0027] Upper and lower shock absorbers 3 are respectively fixed to the inner walls of the upper and lower borders. As Figure 5 and Figure 6 shown, the shock absorber 3 includes an inner carrier plate 31, an outer lining plate 32, a diamond-shaped ring capsule 33, a positioning post 34, and a positioning groove 35. A diamond-shaped ring 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 border or the lower border. A positioning post 34 or a positioning groove 35 is fixed to the surface of the inner carrier plate 31. The positioning post 34 is correspondingly sleeved with the pit (screw hole) on one side surface of the hard disk 7, and the positioning groove 35 is correspondingly sleeved with the protrusion (nut) on the other side surface of the hard disk 7. When the diamond-shaped ring capsule 33 expands, it can position the edges of the upper and lower surfaces of the hard disk 7 to ensure that the hard disk 7 is suspended and supported.

[0028] 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 5a (or a horizontal fluid driver 5b, such as in Embodiment 2).

[0029] As Figure 2As shown, the vertical fluid driver 5a includes a planar bladder 51, a main breathing pipe 52, and breathing branch pipes 53. The planar bladder 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. As Figure 6 and Figure 8 shown, two breathing branch pipes 53 are led out from the rear end of the main breathing pipe 52. One breathing branch pipe 53 communicates with the lower shock absorber 3, and the other breathing branch pipe 53 communicates with the upper shock absorber 3. After the disc cartridge 2 drives the hard disk 7 to flip downward together, the planar bladder 51 is pressed, causing the fluid in the planar bladder 51 to enter the upper and lower shock absorbers 3 and fill them up.

[0030] As Figure 3 and Figure 9 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 elastic piece 67, and an ultra-thin linear vibration motor 68. A 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 wing plates on both sides. The wing plates are respectively fixed to both sides of the rectangular frame 11, and guide holes 64 are respectively arranged on the upper parts of the wing plates. A lock box plate 61 is sleeved on the bottom of the fixed plate 63. Sliders 62 protrude outward from the left and right ends of the lock box plate 61, and the sliders 62 are sleeved in the guide holes 64. Thus, the lock box plate 61 can slide back and forth along the bottom of the fixed plate 63. Two symmetric arc-shaped elastic pieces 67 are installed at the bottom of the front side of the lock box plate 61, or an ultra-thin linear vibration motor 68 is installed between the two symmetric arc-shaped elastic pieces 67 on the left and right and at the lower part of the lock box plate 61. When the disc cartridge 2 drives the hard disk 7 to flip downward until it is parallel to the surface of the chassis 12, the lock box plate 61 is further pressed inward, and the two arc-shaped elastic pieces 67 at the inner end of the lock box plate 61 can press on the upper side of the lock vibration plate 26 at the front lower edge of the disc cartridge 2, forming an elastic pressing relationship. Thus, when an external vibration source causes vibration to the base 1, the disc cartridge 2 can swing up and down elastically around the rotating shaft 22. A vibration sensor is installed on the inner carrier plate 31. 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 68 to provide an active vibration signal. The active vibration signal will drive the front end of the disc cartridge 2 to vibrate up and down, and further cause the vertical fluid driver 5a to change the volume of the fluid flowing in and out of the upper and lower shock absorbers 3, so as to change the vibration frequency of each shock absorber and eliminate the resonance problem.

[0031] Based on the above solution, the hard disk 7 is assembled in the disk case 2. The disk case 2 is turned downward so that the disk case 2 is parallel to the surface of the chassis 12 of the base 1. Then, the lock box plate 61 is pressed inward, so that the two arc-shaped elastic pieces 67 inside the lock box plate 61 press on the upper side of the lock vibration plate 26 of the disk case 2. Among them, after the disk case 2 moves downward, it can drive the vertical fluid driver 5a to be compressed, so that the fluid in the vertical fluid driver 5a is respectively filled into the upper and lower shock absorbers 3 along the breathing main pipe 52 and the breathing branch pipe 53, so that the upper and lower shock absorbers 3 start to expand. The expanded upper and lower shock absorbers 3 are clamped and supported on the upper and lower edges of the hard disk 7, which can not only clamp and position the hard disk 7, but also make the hard disk 7 in a suspended state. When the industrial equipment works and vibrates or the main chassis vibrates, the upper and lower shock absorbers 3 can effectively isolate the vibration. At the same time, when the disk case 2 drives the hard disk 7 to vibrate downward and upward due to the vibration of the equipment or the main chassis, the flat bladder 51 can be squeezed, so that the fluid in the flat bladder 51 is continuously filled into the upper and lower shock absorbers 3 and continuously sucked away from the upper and lower shock absorbers 3 in a small amount. This way of continuously changing the fluid capacity in the upper and lower shock absorbers 3 enables the upper and lower shock absorbers 3 to be in a full state or an under-full state respectively (the under-full state is 95-99% of the full state fluid container), and switches between the two states. When the rhombic ring bladder 33 is full, the internal air pressure is relatively high, and the stiffness of the rhombic ring bladder 33 will increase accordingly. According to the kinetic principle, the increase in stiffness will increase the natural frequency of the shock absorption system, and the increase in the natural frequency will lead to an increase in the sensitivity of the shock absorption pad to high-frequency vibrations and an enhancement of the filtering ability for low-frequency vibrations, thereby changing the received vibration frequency characteristics; when the rhombic ring bladder 33 is half-full, the internal air pressure is relatively low, the stiffness of the rhombic ring bladder 33 is relatively small, the natural frequency of the shock absorption system decreases, the sensitivity to low-frequency vibrations increases, and the filtering ability for high-frequency vibrations weakens, making the received vibration frequency characteristics different from the full state. On the other hand, the damping effect changes: when the full rhombic ring bladder 33 is subjected to vibration impact, the movement of fluid molecules is more intense, the deformation of the rhombic ring bladder 33 is relatively small, and the damping effects such as the friction between the fluid and the inner wall of the rhombic ring bladder 33 and the molecular friction inside the fluid are relatively weak. Since the damping effect plays an important role in the attenuation and energy dissipation of vibration, the weakening of the damping will change the characteristics of vibration transmission, thereby affecting the received vibration frequency; when the half-full rhombic ring bladder 33 vibrates, the deformation of the rhombic ring bladder 33 is larger, the movement and mutual collision of fluid molecules are more frequent, and the damping effects such as the friction between the fluid and the inner wall of the rhombic ring bladder 33 and the molecular friction inside the fluid are enhanced. This enhanced damping effect can more effectively dissipate the vibration energy, make the vibration decay faster, thereby changing the received vibration frequency characteristics, making it more conducive to suppressing the transmission and response of vibration to a certain extent.

[0032] The main features of the above solution are as follows: The shock absorber is used to ensure that the hard disk does not come into contact with any rigid components, ensuring a reliable shock absorption effect on the hard disk; the fluid driver is linked with the shock absorber. Before the disk cartridge is pressed down, the shock absorber is in a natural contraction state to ensure the smooth loading and unloading of the hard disk. After the disk cartridge is pressed down, it prompts the fluid driver to press the fluid into the shock absorber, and the shock absorber expands to position the hard disk and provide a shock absorption function; the external vibration source is used to trigger the volume adjustment mechanism to intervene in the compression degree of the fluid by the fluid driver. Then, when the shock absorber is in the expanded state, the expansion degree is appropriately changed to the full state or the semi-full state to achieve the purpose of passively changing the vibration frequency of the vibrator; the linear vibration motor can select the active triggering timing to actively intervene in the fluid driver to achieve the purpose of actively changing the vibration frequency of the vibrator, such as Figure 4 shows the linkage adjustment relationship between the relevant components of the present invention.

[0033] The usage process of the above solution is as follows. Preparation for pre-installation of S1 device: Fix the base 1 to the inner bottom plate of the host by screws to ensure that the support 13 is vertically aligned with the disc cartridge shaft hole 14; achieve a rigid connection between the vibration damping system and the host, provide a stable base for subsequent dynamic adjustment of the disc cartridge, and increase the vibration transmission path optimization rate by 20%. S2 Non-contact installation of hard disk: Push the hard disk 7 into the frame of the disc cartridge 2 so that the pits / protrusions on both sides of the hard disk are precisely fitted with the positioning posts 34 / positioning grooves 35 of the shock absorber 3; the hard disk and the disc cartridge form a three-dimensional elastic constraint, the installation process is tool-free and time-consuming, and a 2-3 mm assembly gap is reserved through the initial contraction state of the diamond ring capsule 33. S3 Disc cartridge flipping and fluid drive: Flip the disc cartridge 2 downward around the rotating shaft 22 until it is parallel to the chassis 12, triggering the planar bladder 51 or the Z-shaped seal bladder 54 to be pressed; the fluid is injected into the upper and lower shock absorbers 3 through the breathing branch pipe 53, and the diamond ring capsule 33 expands to a full state (pressure 0.15-0.25 MPa), and the hard disk is suspended. S4 Locking of the container adjustment mechanism: Press the lock box plate 61 forward to elastically press the lock vibration plate 26 at the front end of the disc cartridge by the arc-shaped elastic piece 67; form a dynamic hinge constraint, allow the disc cartridge to swing slightly (±3°) around the rotating shaft 22, and at the same time preload a 5-10 N pre-tightening force through the ultra-thin linear vibration motor 68, and the tolerance of the system natural frequency deviation is controlled within ±5 Hz. S5 Activation of the vibration damping system: Start the vibration sensor and the microcontroller to complete the system self-check (including fluid pressure calibration, motor response test); establish an active intervention closed-loop control for vibration signal frequency analysis, which can identify the resonance frequency band (such as 120-250 Hz) within 20 ms and trigger anti-phase vibration intervention. S6 Dynamic operation adjustment, maintain the shock absorber 3 in an under-full state (fluid volume 95%), and the stiffness of the diamond ring capsule 33 is reduced to 8-12 N / mm; preferentially suppress low-frequency vibrations <200 Hz; maintain the shock absorber 3 in a full state, and the stiffness is increased to 15-20 N / mm to absorb vibration energy in the high-frequency band of 500-2000 Hz. S7 Maintenance and disassembly: After unlocking the lock box plate 61, turn the disc cartridge 2 upward, and the hard disk 7 relaxes as the shock absorber 3 contracts; the fluid flows back to the driver bladder through the breathing branch pipe 53 and returns to the initial assembly state within 5 seconds, supporting >200 disassembly and assembly cycles throughout the year without performance degradation. Through the above steps, a full-chain protection of "mechanical action triggers fluid distribution → dynamic adjustment of stiffness / damping → multi-stage dissipation of vibration energy → intelligent feedback to suppress resonance" is formed. Compared with the traditional solution, the anti-shock ability and data security of this solution are significantly improved, and the hard disk failure rate is significantly reduced.

[0034] Embodiment 2: Based on the device of Embodiment 1, adopt the transverse fluid driver 5b as shown in Figure 8 and Figure 9 shown, as Figure 8 and Figure 9As shown in the figure, the horizontal fluid driver 5b includes a Z-shaped bladder 54, a reaction spring 55, a breathing main pipe 52, and breathing branch pipes 53. The Z-shaped bladder 54 is sleeved on the inner wall of the front end of the rectangular frame 11 of the base 1. The breathing main pipe 52 is fixed in the middle of the chassis 12 of the base 1. Two breathing branch pipes 53 are respectively led out from the end of the breathing main pipe 52. One breathing branch pipe 53 communicates with the shock absorber 3 below, and the other breathing branch pipe 53 communicates with the shock absorber 3 above.

[0035] At the same time, a set of stretching components 4 as shown in Figures 7 - 9 the figure is adopted. The stretching component 4 includes a root connecting rod 41, a moving connecting rod 42, a middle connecting rod 43, a rear pressing plate 44, a front pressing plate 45, a rolling sleeve 46, and a front pushing plate 47. Pressing rod shaft holes 15 are respectively arranged on the left and right side walls at the rear of the rectangular frame 11. Strip-shaped holes 16 are respectively arranged on the left and right side walls at the front of the rectangular frame 11. The root connecting rod 41 is sleeved in the pressing rod shaft holes 15. Both ends of the moving connecting rod 42 are sleeved in the strip-shaped holes 16. Rear pressing plates 44 are respectively hinged at both ends of the root connecting rod 41. The other ends of the rear pressing plates 44 are respectively hinged to the middle connecting rod 43. Front pressing plates 45 are respectively hinged at the left and right ends of the middle connecting rod 43. The other ends of the front pressing plates 45 are respectively hinged to the moving connecting rod 42. A rolling sleeve 46 is sleeved on the outside of the middle connecting rod 43. The left and right sides of the front pushing plate 47 respectively include side plates. Shaft holes are respectively arranged on the side plates and are respectively sleeved on the left and right ends of the moving connecting rod 42. When the disc cartridge 2 rotates downward, it can first press the rolling sleeve 46 to move downward. When the rolling sleeve 46 moves downward, the rear pressing plate 44 and the front pressing plate 45 change from an inclined state to a horizontal state, thereby driving the front pushing plate 47 to move forward. When the front pushing plate 47 moves forward, it can drive the Z-shaped bladder 54 of the horizontal fluid driver 5b to contract. Reaction springs 55 are respectively installed on the left and right sides of the Z-shaped bladder 54. The reaction springs 55 support and close at the front end of the front pushing plate 47, and the inner surface of the front end wall of the rectangular frame 11. Compared with Embodiment 1, this embodiment can absorb the vertical vibration of the device or the main chassis, and can also absorb the horizontal vibration of the device or the main chassis at the same time.

[0036] Embodiment 3: On the basis of Embodiment 2, two sets of stretching components 4 as shown in Figure 10 the figure are adopted.

[0037] Embodiment 4: A vibration damping method based on the vibration damping device of Embodiments 1-3 is adopted, including the following steps: S1. Install the hard disk 7 in the disc cartridge 2 with the shock absorber 3, turn the disc cartridge 2 to the closed state, trigger the fluid driver to inject fluid into the shock absorber 3, and expand the diamond-shaped ring bladder 33 to a preset pressure threshold to form a suspended non-contact support for the hard disk 7.

[0038] S2. Apply a dynamic binding force to the disc cartridge 2 through the housing adjustment mechanism 6 to establish an elastic swinging degree of freedom of the disc cartridge 2 around the rotating shaft 22. Among them, the triggering of the fluid driver includes two implementation methods. Vertical triggering: When the disc cartridge 2 is pressed down, it compresses the planar bladder 51, and unidirectionally injects fluid into the shock absorber 3 through the breathing branch pipe 53. Horizontal triggering: When the disc cartridge 2 flips, it drives the extension assembly 4 to squeeze the Z-shaped bladder 54, and balances the fluid pressure fluctuation through the reaction spring 55. The linkage of the extension assembly 4 during the horizontal triggering process includes: When the disc cartridge 2 is pressed down, it presses the roller sleeve 46 to drive the front push plate 47 to move forward, compressing the Z-shaped bladder 54 to 60-70% of its original length; 35-45% of the mechanical energy is stored through the reaction spring 55 for the dynamic compensation of the fluid pressure during the vibration return stroke.

[0039] S3. Collect the hard disk vibration signal in real time. When the resonance characteristic frequency is detected in the vibration spectrum, drive the ultra-thin linear vibration motor 68 to generate an anti-phase disturbance, dynamically adjust the fluid volume in the shock absorber 3, so that the diamond-shaped ring bladder 33 switches between the full state and the under-full state, and synchronously changes the stiffness and fluid damping characteristics of the shock absorption system. The application of the dynamic binding force includes: applying a pre-tightening force of 5-10 N to the disc cartridge 2 through the arc-shaped elastic piece 67 to limit its swing amplitude within ±3°.

[0040] S4. Based on the vibration energy frequency domain distribution, adaptively select the low-frequency vibration isolation mode or the high-frequency damping mode. Among them, the low-frequency vibration isolation mode maintains the fluid volume in the shock absorber 3 at 95-99% of the full state, and the stiffness is controlled at 8-12 N / mm; the high-frequency damping mode increases the fluid volume to the full state, and the stiffness rises to 15-20 N / mm. The generation of the anti-phase disturbance includes: obtaining the vibration acceleration signal through the vibration sensor, and extracting the main frequency component through the fast Fourier transform; when the deviation between the main frequency component and the system natural frequency <5%, it is determined as a resonance risk, and the ultra-thin linear vibration motor 68 is started to generate an active intervention signal with an amplitude of 3-5 μm and a phase difference of 180°. The stiffness adjustment of the diamond-shaped ring bladder 33 is realized through fluid pressure control, and satisfies the relationship:

[0041] Among them, K is the real-time stiffness value, E is the elastic modulus of the bladder material, t is the wall thickness of the bladder, ν is the Poisson's ratio, P is the current fluid pressure, P0 is the reference pressure, and the stiffness adjustment range covers 8-20 N / mm.

[0042] S5. Operations during the maintenance stage: Unlock the housing adjustment mechanism 6 and turn over the disc cartridge 2 upwards. The fluid driver automatically recovers more than 95% of the fluid in the shock absorber 3; after the diamond-shaped ring bladder 33 contracts, a safety gap of 1.5-2 mm is formed with the surface of the hard disk 7, supporting tool-free disassembly.

[0043] The above specific embodiments of the present invention are only used for illustrative explanation or interpretation of the principles of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rigid-flexible coupling vibration damping device for a computer hard disk, comprising a base (1), a disk cartridge (2) and a shock absorber (3), characterized in that, It further includes a fluid driver and a volume adjusting mechanism (6). The base (1) includes a rectangular frame (11) and a chassis (12). A pair of supports (13) are fixed to the rear side of the rectangular frame (11) and are respectively provided with disc cartridge shaft holes (14); the disc cartridge (2) includes a rectangular frame (21) and a vibration locking plate (26). The rectangular frame (21) includes an upper rectangular border and a lower rectangular border. Rotating shafts (22) are respectively fixed to the rear sides of the left and right side walls of the rectangular frame (21). The left and right two rotating shafts (22) are respectively assembled in the corresponding disc cartridge shaft holes (14); upper and lower shock absorbers (3) are respectively fixed to the inner walls of the upper and lower borders. The shock absorber (3) includes an inner carrier plate (31) and an outer lining plate (32). A diamond-shaped ring bladder (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 border or the lower border. A positioning post (34) or a positioning groove (35) is fixed to the surface of the inner carrier plate (31). The positioning post (34) is correspondingly sleeved with a pit on one side surface of the hard disk (7), and the positioning groove (35) is correspondingly sleeved with a protrusion on the other side surface of the hard disk (7); a fluid driver and a volume adjusting mechanism (6) are respectively installed on the front side of the rectangular frame (11). The fluid driver is communicated with the upper and lower two shock absorbers (3). When the disc cartridge (2) is turned downwards and closed, its bottom presses against the fluid driver, forcing the fluid to be filled into the two shock absorbers to be full; the volume adjusting mechanism (6) elastically locks the vibration locking plate (26) to ensure that when the two shock absorbers (3) are in a full state, the disc cartridge (2) still has elastic vibration, and when elastically vibrating, it drives the fluid driver to alternately fill the fluid into the two shock absorbers (3) and suck out the fluid to change the fullness degree of the disc cartridge (2), thereby adjusting the vibration frequency of the disc cartridge (2).

2. The computer hard disk rigid-flexible coupling vibration damping device according to claim 1, wherein The fluid driver includes a vertical fluid driver (5a). The vertical fluid driver (5a) includes a planar bladder (51), a breathing main pipe (52), and breathing branch pipes (53). The planar bladder (51) is sleeved on the front side of the chassis (12) of the base (1). The breathing main pipe (52) is fixed to the middle of the chassis (12) of the base (1). Two breathing branch pipes (53) are respectively led out from the rear end of the breathing main pipe (52). One of the breathing branch pipes (53) is communicated with the lower shock absorber (3), and the other breathing branch pipe (53) is communicated with the upper shock absorber (3).

3. The computer hard disk rigid-flexible coupling vibration damping device according to claim 2, wherein, The volume adjusting mechanism (6) includes a locking box plate (61), a fixing plate (63), and an arc-shaped elastic piece (67). A fixing plate (63) is fixed to the front end of the rectangular frame (11). Guide holes (64) are respectively arranged on the left and right sides of the fixing plate (63). A locking box plate (61) is sleeved at the bottom of the fixing plate (63). Sliders (62) respectively protrude outwards from the left and right ends of the locking box plate (61). The sliders (62) are sleeved in the guide holes (64). Two symmetric arc-shaped elastic pieces (67) are installed at the bottom of the front side of the locking box plate (61).

4. The computer hard disk rigid-flexible coupling vibration damping device according to claim 3, wherein An ultra-thin linear vibration motor (68) is installed between two symmetric arc-shaped elastic pieces (67) on the left and right and at the lower part of the lock box plate (61). A vibration sensor is installed on the inner carrier plate (31). 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 (68) to provide an active vibration signal, which will drive the front end of the disc cartridge (2) to vibrate up and down, thereby prompting the vertical fluid driver (5a) to change the capacity of the fluid flowing in and out of the upper and lower shock absorbers (3).

5. The computer hard disk rigid-flexible coupling vibration damping device according to claim 3, characterized in that, The fixing plate (63) includes a horizontal web in the middle and vertical wing plates on both sides. The wing plates are respectively fixed on both sides of the rectangular frame (11), and guiding holes (64) are respectively provided at the upper parts of the wing plates.

6. The computer hard disk rigid-flexible coupling vibration damping device according to claim 1, wherein The upper and lower rectangular frames are fixed into one body by connecting plates. A bottom plate (23) is fixed in the middle of the lower rectangular frame, a top plate (24) is fixed in the middle of the upper rectangular frame, and side plates (25) are fixed in the areas between adjacent connecting plates on the left and right. The bottom plate (23), the top plate (24) and the side plates (25) are respectively of a hollow structure.

7. The computer hard disk rigid-flexible coupling vibration damping device according to claim 1, wherein The fluid driver includes a horizontal fluid driver (5b). The horizontal fluid driver (5b) includes a Z-shaped bladder (54), a reaction spring (55), a main breathing pipe (52) and breathing branch pipes (53). The Z-shaped bladder (54) is sleeved at the inner wall position of the front end of the rectangular frame (11) of the base (1). The main breathing pipe (52) is fixed in the middle of the chassis (12) of the base (1). Two breathing branch pipes (53) are respectively led out from the end of the main breathing pipe (52). One breathing branch pipe (53) communicates with the lower shock absorber (3), and the other breathing branch pipe (53) communicates with the upper shock absorber (3).

8. The computer hard disk rigid-flexible coupling vibration damping device according to claim 7, wherein It includes at least one set of stretching components (4). The stretching components (4) include a root connecting rod (41), a moving connecting rod (42), a middle connecting rod (43) and a front pushing plate (47). A pressure rod shaft hole (15) is provided on the rear side wall of the rectangular frame (11), and a strip-shaped 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). The two ends of the moving connecting rod (42) are sleeved in the strip-shaped hole (16). Rear pressing plates (44) are respectively hinged at the two ends of the root connecting rod (41). The other ends of the rear pressing plates (44) are respectively hinged to the middle connecting rod (43). Front pressing plates (45) are respectively hinged at the left and right ends of the middle connecting rod (43). The other ends of the front pressing plates (45) are respectively hinged to the moving connecting rod (42). The left and right sides of the front pushing plate (47) respectively include side plates, and shaft holes are respectively provided on the side plates and sleeved at the two ends of the moving connecting rod (42).

9. A vibration damping method for the rigid-flexible coupling vibration damping device of a computer hard disk according to claim 1, characterized in that, It includes the following steps: Step 1: Install the hard disk (7) in the disc cartridge (2) with shock absorbers (3), turn the disc cartridge (2) to the closed state, trigger the fluid driver to inject fluid into the shock absorbers (3), and make the diamond-shaped ring bladder (33) expand to a preset pressure threshold to form a suspended non-contact support for the hard disk (7); Step 2: Apply a dynamic binding force to the disc cartridge (2) through the volume adjusting mechanism (6) to establish an elastic swinging degree of freedom of the disc cartridge (2) around the rotating shaft (22). Step 3: Real-time collect the hard disk vibration signal. When the resonance characteristic frequency is detected in the vibration spectrum, drive the ultra-thin linear vibration motor (68) to generate an anti-phase perturbation, dynamically adjust the fluid volume in the shock absorber (3), and switch the diamond-shaped ring bladder (33) between the full state and the under-full state, synchronously changing the stiffness and fluid damping characteristics of the shock absorption system; Step 4: Based on the frequency-domain distribution of the vibration energy, adaptively select the low-frequency vibration isolation mode or the high-frequency damping mode. Among them, in the low-frequency vibration isolation mode, the fluid volume of the shock absorber (3) is maintained at 95-99% of the full state, and the stiffness is controlled at 8-12 N / mm; in the high-frequency damping mode, the fluid volume is increased to the fully full state, and the stiffness is increased to 15-20 N / mm.

10. The vibration damping method according to claim 9, characterized in that, The triggering of the fluid driver in the said Step 1 includes two implementation methods. Vertical triggering: When the disk cartridge (2) is pressed down, the flat bladder (51) is compressed, and fluid is unidirectionally injected into the shock absorber (3) through the breathing branch pipe (53); Lateral triggering: When the disk cartridge (2) is flipped, the linkage extension assembly (4) squeezes the Z-shaped sealed bladder (54), and the fluid pressure fluctuation is balanced through the reaction spring (55).

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