CN114138077A - Server and sound-absorbing and noise-reducing mechanism thereof - Google Patents
Server and sound-absorbing and noise-reducing mechanism thereof Download PDFInfo
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- CN114138077A CN114138077A CN202111264287.5A CN202111264287A CN114138077A CN 114138077 A CN114138077 A CN 114138077A CN 202111264287 A CN202111264287 A CN 202111264287A CN 114138077 A CN114138077 A CN 114138077A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 238000009423 ventilation Methods 0.000 claims abstract description 20
- 238000009826 distribution Methods 0.000 claims description 10
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 42
- 206010063659 Aversion Diseases 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011358 absorbing material Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
- G06F1/187—Mounting of fixed and removable disk drives
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a sound absorption and noise reduction mechanism which comprises a hard disk back plate arranged in a case and used for installing a hard disk, and a sound absorption base plate which is arranged on the side surface of the hard disk back plate facing a fan and used for absorbing noise generated during the operation of the fan, wherein a plurality of hollow holes used for exposing each reserved ventilation hole on the hard disk back plate and a plurality of avoiding holes used for exposing each accessory element on the same side surface of the hard disk back plate are formed in the sound absorption base plate. So, through inhaling the sound backing plate cover on the side of hard disk backplate and keep just right with the fan to can absorb the noise that the fan operation produced, reduce the noise and to the influence of hard disk performance, simultaneously, expose the ventilation hole and the accessory component of hard disk backplate through fretwork hole and aversion hole, consequently can guarantee that the air inlet air current dispels the heat to the accessory component smoothly and dispels the heat to the hard disk through the ventilation hole, prevent that the air inlet flow from reducing. The invention also discloses a server, which has the beneficial effects as described above.
Description
Technical Field
The invention relates to the technical field of servers, in particular to a sound-absorbing and noise-reducing mechanism. The invention also relates to a server.
Background
With the development of the electronic technology in China, more and more electronic devices have been widely used.
The server is an important component of the electronic device, and is a device that provides a computing service, and since the server needs to respond to and process a service request, the server has the capability of undertaking and securing the service. Servers can be classified as file servers, database servers, application servers, WEB servers, and the like, depending on the type of service provided. The main components of the server include a CPU, a hard disk, a memory, a system bus, and the like, similar to a general computer architecture.
In the big data era, a large number of IT devices are centrally placed in racks of a data center. These data centers include various types of servers, storage, switches, and a large number of cabinets and other infrastructure. Each type of IT equipment is composed of various hardware boards, such as a computing module, a storage module, a chassis, a fan, and the like.
At present, the power consumption of server components is increasing day by day, and for air-cooled servers, increasing the fan speed is a common way to increase the heat dissipation performance, but with the increase of the fan speed, the noise caused by the operation of the fan is also more and more severe. Meanwhile, with the increasing demand of the capacity of the hard disk, the density of the hard disk is higher and higher, the self vibration-resistant and noise-resistant effects of the hard disk are limited, and the influence of noise caused by the increase of the rotating speed of the fan is difficult to resist. Moreover, the design density of the server components is higher and higher, and for matching the depth of the general cabinet and the size optimization of a customer site, the length of the server cannot be longer and longer, so that the arrangement positions of the hard disk and the fan are closer and closer, and the influence of the running noise of the fan on the performance of the hard disk is more and more serious.
In the prior art, a honeycomb network is generally added in front of a fan frame or foam is attached to the inner wall of a case, so that the air vortex can be guided, the influence of the vortex on fan blades is reduced, and the noise of the fan is reduced to a certain extent; the latter can carry out certain separation to the noise through the bubble cotton. However, both the cellular network and the foam have a certain influence on the air intake flow of the server, and additionally occupy a large area of installation space, which leads to easy blocking of the heat dissipation channel, resulting in increased wind resistance, reduced cold air flow, and reduced heat dissipation performance.
Therefore, how to enhance the absorption of the fan operation noise and reduce the influence of the noise on the performance of the hard disk on the basis of avoiding the influence on the heat dissipation performance is a technical problem faced by those skilled in the art.
Disclosure of Invention
The invention aims to provide a sound absorption and noise reduction mechanism which can enhance the absorption of fan operation noise and reduce the influence of noise on the performance of a hard disk on the basis of avoiding the influence on the heat dissipation performance. Another object of the present invention is to provide a server.
In order to solve the technical problems, the invention provides a sound absorption and noise reduction mechanism, which comprises a hard disk backboard arranged in a case and used for installing a hard disk, and a sound absorption base plate arranged on the side surface of the hard disk backboard facing a fan and used for absorbing noise generated during the operation of the fan, wherein a plurality of hollow holes used for exposing each ventilation hole reserved on the hard disk backboard and a plurality of avoiding holes used for exposing each accessory element on the same side surface of the hard disk backboard are formed in the sound absorption base plate.
Preferably, the coverage area of each hollow hole is the same as that of the corresponding ventilation hole, and the coverage area of each avoidance hole is the same as that of the corresponding accessory element.
Preferably, the shape of the sound absorption backing plate is consistent with that of the hard disk back plate.
Preferably, a plurality of reflection holes for reflecting the noise sound wave multiple times to absorb the noise energy are distributed in the sound absorption backing plate.
Preferably, each of the reflective holes is spherical, rectangular or honeycomb-shaped.
Preferably, the distribution density of the reflection holes in the sound absorption backing plate is matched with the distribution of noise energy generated by the operation of the fan.
Preferably, the sound absorption backing plate is a melamine plate, a polyurethane plate or a sponge plate.
Preferably, the sound absorption backing plate is adhered to the side face of the hard disk back plate through an adhesive.
Preferably, the sound absorption backing plate comprises a plurality of sub-templates which can be spliced.
The invention also provides a server, which comprises a case, a fan arranged in the case and a sound absorption and noise reduction mechanism arranged in the case, wherein the sound absorption and noise reduction mechanism is specifically any one of the sound absorption and noise reduction mechanisms.
The invention provides a sound absorption and noise reduction mechanism which mainly comprises a hard disk back plate, a sound absorption base plate, hollow holes and avoiding holes. The hard disk back plate is arranged in the case and is mainly used for being connected with a plurality of hard disks to realize the installation of the hard disks in the case. Generally, since the hard disk is installed at the front end of the chassis and the fan is installed at the rear end of the chassis, the hard disk backplane is specifically disposed between the hard disk and the fan. The sound absorption base plate is arranged on the hard disk back plate and is specifically positioned on the side face, facing the fan, of the hard disk back plate, so that the sound absorption base plate is opposite to the fan and is mainly used for absorbing noise energy which is generated when the fan runs and is transmitted to the hard disk back plate. The fretwork hole is seted up on inhaling the sound backing plate, has generally seted up a plurality ofly simultaneously, and the position of seting up of each fretwork hole corresponds mutually with the position of seting up of each ventilation hole of reserving on the hard disk backplate to expose each ventilation hole, avoid each ventilation hole to be sheltered from, guarantee that the air inlet air current that the fan produced can dispel the heat for parts such as hard disk through each ventilation hole smoothly. The position avoiding holes are also formed in the sound absorbing base plate and are generally formed in a plurality of positions, the forming positions of the position avoiding holes correspond to the forming positions of the auxiliary elements on the same side face of the hard disk back plate, so that the auxiliary elements are exposed, the auxiliary elements are prevented from being covered by the sound absorbing base plate, and the air inlet flow generated by the fan can smoothly pass through the auxiliary elements and dissipate heat of the auxiliary elements. Therefore, the sound absorption and noise reduction mechanism provided by the invention can absorb the noise generated during the operation of the fan and reduce the influence of the noise on the performance of the hard disk by covering the sound absorption base plate on the side surface of the hard disk back plate and keeping the sound absorption base plate opposite to the fan, and meanwhile, the sound absorption base plate is respectively provided with the hollow holes and the avoiding holes to expose the ventilation holes and the auxiliary elements of the hard disk back plate, so that the sound absorption and noise reduction mechanism can ensure that the air flow can smoothly radiate the auxiliary elements and the hard disk through the ventilation holes, and prevent the air flow from being reduced. Compared with the prior art, the invention can enhance the absorption of the fan operation noise and reduce the influence of the noise on the performance of the hard disk on the basis of avoiding the influence on the heat dissipation performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of an installation structure of the attraction noise reduction mechanism in the chassis.
Fig. 3 is a schematic view showing a specific structure of the acoustic mat.
Fig. 4 is a schematic diagram of the reflection principle of the reflection hole.
Fig. 5 is a graph showing the noise absorption characteristic of the acoustic mat.
Wherein, in fig. 1-4:
the hard disk drive comprises a case-1, a hard disk backboard-2 and a sound absorption base plate-3;
a vent-hole-21, an accessory-element-22, a hollowed-out hole-31, a clearance hole-32, and a reflection hole-33.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention, and fig. 2 is a schematic installation structure diagram of an attraction noise reduction mechanism in a chassis 1.
In a specific embodiment provided by the present invention, the sound absorption and noise reduction mechanism mainly includes a hard disk back plate 2, a sound absorption backing plate 3, a hollow hole 31 and a clearance hole 32.
The hard disk back plate 2 is arranged in the case 1 and is mainly used for being connected with a plurality of hard disks to realize the installation of the hard disks in the case 1. Generally, since the hard disk is installed at the front end of the chassis 1 and the fan is installed at the rear end of the chassis 1, the hard disk backplane 2 is specifically disposed between the hard disk and the fan.
The sound absorption base plate 3 is arranged on the hard disk back plate 2, is specifically positioned on the side surface of the hard disk back plate 2 facing the fan, is opposite to the fan, and is mainly used for absorbing noise energy generated during the operation of the fan and transmitted to the hard disk back plate 2.
The fretwork hole 31 is seted up on inhaling the sound backing plate 3, has generally seted up a plurality ofly simultaneously, and the position of seting up of each fretwork hole 31 corresponds mutually with the position of seting up of each ventilation hole 21 of reserving on the hard disk backplate 2 to expose each ventilation hole 21, avoid each ventilation hole 21 to be sheltered from, guarantee that the air inlet air current that the fan produced can dispel the heat for parts such as hard disk smoothly through each ventilation hole 21.
The position-avoiding holes 32 are also formed in the sound-absorbing backing plate 3, and are generally formed in a plurality of positions, and the positions of the position-avoiding holes 32 correspond to the positions of the attachment elements 22 on the same side of the hard disk back plate 2, so that the attachment elements 22 are exposed, the attachment elements 22 are prevented from being covered by the sound-absorbing backing plate 3, and the air intake flow generated by the fan can smoothly pass through the attachment elements 22 and dissipate heat of the attachment elements 22.
Therefore, the sound-absorbing and noise-reducing mechanism provided by the embodiment covers the side surface of the hard disk back plate 2 through the sound-absorbing base plate 3 and keeps right opposite to the fan, so that the noise generated during the operation of the fan can be absorbed, the influence of the noise on the performance of the hard disk is reduced, meanwhile, as the sound-absorbing bottom plate is respectively provided with the hollow hole 31 and the avoiding hole 32, the ventilation hole 21 and the accessory element 22 of the hard disk back plate 2 are exposed, the smooth heat dissipation of the accessory element 22 by the air inlet flow and the heat dissipation of the hard disk through the ventilation hole 21 can be ensured, and the reduction of the air inlet flow is prevented.
Compared with the prior art, the embodiment can strengthen the absorption of the running noise of the fan on the basis of avoiding influencing the heat dissipation performance, and the influence of noise reduction on the performance of the hard disk is reduced.
In an alternative embodiment of the hollow holes 31 and the clearance holes 32, the coverage area of each hollow hole 31 is the same as that of the corresponding vent hole 21, and similarly, the coverage area of each clearance hole 32 is the same as that of the corresponding accessory element 22. So set up, each fretwork hole 31 keeps completely aliging with each ventilation hole 21 that corresponds respectively, and each keeps away position hole 32 and keeps completely aliging with each corresponding accessory component 22 respectively to avoid reducing the air inlet flow, avoiding sheltering from heat radiating area's basis on, the maximize inhales the area of laying of sound backing plate 3. Of course, if necessary, the coverage area of each hollow hole 31 may be slightly larger than that of the corresponding ventilation hole 21, and the coverage area of each clearance hole 32 may be slightly larger than that of the corresponding accessory element 22.
In an alternative embodiment of the sound absorbing pad 3, in order to avoid the sound absorbing pad 3 from occupying extra installation space in the case 1, the shape of the sound absorbing pad 3 is consistent with the shape of the hard disk back plate 2 in this embodiment. With this arrangement, since the hard disk back plate 2 is generally rectangular, the acoustic backing plate 3 is also rectangular.
As shown in fig. 3 and 4, fig. 3 is a schematic view showing a specific structure of the acoustic backing plate 3, and fig. 4 is a schematic view showing a reflection principle of the reflection holes 33.
In order to improve the noise absorption effect of the acoustic backing plate 3, the present embodiment provides a plurality of reflective holes 33 in the acoustic backing plate. Specifically, each reflection hole 33 is distributed in the attraction backing plate, and is mainly used for reflecting the noise sound wave for many times on the hole wall of the transmission hole after the noise sound wave is injected, so that the energy of the noise sound wave is absorbed in the reflection process at every time, and the noise absorption effect is improved.
Generally, the shape of each emission hole can be spherical, rectangular or honeycomb, the specific shape is not limited, and multiple inner walls and multiple reflection angles are taken as the design principle. For example, the shape of each emitting hole may be irregular polygon, curve, etc.
Further, considering that the fans are generally provided with a plurality of fans at the same time, noise sound waves generated by different fans are in different diffusion states, and when the noise sound waves of each fan are transmitted to the acoustic backing plate 3, a situation that noise energy of a partial region is large and noise energy of a partial region is small may occur, for this reason, in the present embodiment, the distribution form of each reflection hole 33 in the acoustic backing plate 3 is not random, but the distribution density of the reflection holes 33 matches with the distribution of noise energy generated by the operation of the fan, that is, in a region with strong noise energy distribution, the distribution density of the corresponding reflection holes 33 is large, and vice versa. With such an arrangement, the distribution pattern of the reflective holes 33 in the acoustic backing plate 3 can correspond to the actual noise condition when the fan is running.
As shown in fig. 5, fig. 5 is a graph showing the noise absorption characteristic of the acoustic liner plate 3 (bottom curve corresponds to the acoustic liner plate 3).
In order to enhance the noise absorption effect, the sound absorption backing plate 3 may be a melamine board, a polyurethane board, a sponge board, or the like. Because different sound-absorbing materials have different noise absorption characteristics, the sound-absorbing materials are actually selected according to the actual condition of the fan noise.
For the installation of conveniently inhaling sound backing plate 3 on hard disk backplate 2, in this embodiment, inhale sound backing plate 3 and specifically pass through the gluing agent adhesion on hard disk backplate 2's side to can conveniently cover hard disk backplate 2's side. Of course, the acoustic pad 3 may be mounted by a fastener such as a screw or other fastening structure.
In addition, considering that the hard disk backplates 2 of different servers are different in structure and shape, in order to improve the universality of the sound absorption backing plate 3, in this embodiment, the sound absorption backing plate 3 is a modularized split structure and specifically comprises a plurality of spliced sub-templates. Generally, the size of each module sub-template is smaller, and is significantly smaller than the size of each type of hard disk backplane 2, and the shape can be rectangular, etc., so that when in use, a proper number of sub-templates can be respectively covered on the hard disk backplane 2 according to the actual size and shape of the current hard disk backplane 2.
The embodiment further provides a server, which mainly includes a case 1, a fan disposed in the case 1, and a sound-absorbing and noise-reducing mechanism disposed in the case 1, wherein the specific content of the sound-absorbing and noise-reducing mechanism is the same as the related content, and is not described herein again.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a inhale sound and fall mechanism of making an uproar which characterized in that, including set up in quick-witted case (1) and be used for installing hard disk's hard disk backplate (2), and set up in on the side of hard disk backplate (2) towards the fan, be used for absorbing sound absorbing backing plate (3) of the noise that the fan produced during operation, it is used for exposing to offer a plurality of on sound absorbing backing plate (3) the fretwork hole (31) of each ventilation hole (21) of reserving on hard disk backplate (2) to and a plurality of are used for exposing keep away a hole (32) of each accessory component (22) on the same side of hard disk backplate (2).
2. The mechanism according to claim 1, wherein the hollow holes (31) have the same area as the corresponding vent holes (21), and the space-avoiding holes (32) have the same area as the corresponding attachment elements (22).
3. The sound absorbing and noise reducing mechanism according to claim 2, wherein the shape of the sound absorbing pad (3) is kept in conformity with the shape of the hard disk back plate (2).
4. The sound absorbing and noise reducing mechanism according to claim 1, wherein the sound absorbing pad (3) has a plurality of reflecting holes (33) distributed therein for reflecting noise sound waves multiple times to absorb noise energy.
5. The sound absorbing and noise reducing mechanism of claim 4, wherein each of the reflective holes (33) is spherical, rectangular or honeycomb shaped.
6. The mechanism of claim 5, wherein the density of the distribution of the reflective holes (33) in the acoustic backing plate (3) matches the distribution of the noise energy generated by the fan operation.
7. The mechanism according to claim 1, wherein the sound absorbing pad (3) is a melamine board, a polyurethane board or a sponge board.
8. The sound-absorbing and noise-reducing mechanism according to claim 1, wherein the sound-absorbing pad (3) is adhered to the side surface of the hard disk back plate (2) by an adhesive.
9. The mechanism of claim 1, wherein the sound absorbing mat (3) comprises several sub-mats that can be spliced.
10. A server comprising a chassis (1), a fan arranged in the chassis (1) and a sound-absorbing and noise-reducing mechanism arranged in the chassis (1), characterized in that the sound-absorbing and noise-reducing mechanism is specifically the sound-absorbing and noise-reducing mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264287.5A CN114138077A (en) | 2021-10-28 | 2021-10-28 | Server and sound-absorbing and noise-reducing mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264287.5A CN114138077A (en) | 2021-10-28 | 2021-10-28 | Server and sound-absorbing and noise-reducing mechanism thereof |
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| Publication Number | Publication Date |
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| CN114138077A true CN114138077A (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111264287.5A Pending CN114138077A (en) | 2021-10-28 | 2021-10-28 | Server and sound-absorbing and noise-reducing mechanism thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB489424A (en) * | 1936-02-04 | 1938-07-24 | Burgess Lab Inc C F | Improvements in ventilating system |
| DE1868072U (en) * | 1960-12-21 | 1963-02-28 | Ver Baustoffwerke Bodenwerder | SOUND-SOUND DISK. |
| EP2858066A2 (en) * | 2013-10-03 | 2015-04-08 | Kohler Co. | Noise suppression systems |
| CN207352532U (en) * | 2017-09-14 | 2018-05-11 | 郑州云海信息技术有限公司 | A kind of noise-reducing structure on hard disk mainframe |
| CN108533531A (en) * | 2017-02-28 | 2018-09-14 | 西部数据技术公司 | Fan noise decaying at hard disk drive in rack installation |
| CN209879376U (en) * | 2019-05-27 | 2019-12-31 | 苏州玮俊电子科技有限公司 | Conductive cloth for notebook display screen |
| CN213876528U (en) * | 2020-11-19 | 2021-08-03 | 新昌县金裕装饰有限公司 | Quick-witted case of rapid dust removal noise |
-
2021
- 2021-10-28 CN CN202111264287.5A patent/CN114138077A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB489424A (en) * | 1936-02-04 | 1938-07-24 | Burgess Lab Inc C F | Improvements in ventilating system |
| DE1868072U (en) * | 1960-12-21 | 1963-02-28 | Ver Baustoffwerke Bodenwerder | SOUND-SOUND DISK. |
| EP2858066A2 (en) * | 2013-10-03 | 2015-04-08 | Kohler Co. | Noise suppression systems |
| CN108533531A (en) * | 2017-02-28 | 2018-09-14 | 西部数据技术公司 | Fan noise decaying at hard disk drive in rack installation |
| CN207352532U (en) * | 2017-09-14 | 2018-05-11 | 郑州云海信息技术有限公司 | A kind of noise-reducing structure on hard disk mainframe |
| CN209879376U (en) * | 2019-05-27 | 2019-12-31 | 苏州玮俊电子科技有限公司 | Conductive cloth for notebook display screen |
| CN213876528U (en) * | 2020-11-19 | 2021-08-03 | 新昌县金裕装饰有限公司 | Quick-witted case of rapid dust removal noise |
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Application publication date: 20220304 |