CN220731176U - Mechanical hard disk assembly and chassis - Google Patents

Abstract

The utility model relates to a hard disk technical field discloses a mechanical hard disk subassembly and quick-witted case, mechanical hard disk subassembly includes main support, extension support, hard disk unit, first damper and second damper, the extension support is erect on the main support, the main support with be equipped with respectively on the extension support hard disk unit, first damper is established the main support and/or on the extension support, each hard disk unit with be equipped with respectively between the extension support second damper. Through setting up first damper and second damper, realize the dual shock attenuation to hard disk unit, main support and expansion bracket. The number and the capacity of the hard disk units are increased, and meanwhile, the requirement of shock absorption can be met.

Description

Mechanical hard disk assembly and chassis

Technical Field

The disclosure relates to the technical field of hard disks, and in particular relates to a mechanical hard disk assembly and a chassis.

Background

The mechanical hard disk is a necessary configuration in the industrial personal computer and is used for storing read data. Mechanical hard disks are generally classified into 2.5 inch mechanical hard disks, 3.5 inch mechanical hard disks, and 5.25 inch mechanical hard disks according to the difference in capacity. The operation environment of the industrial personal computer is complex, the requirement on the mechanical hard disk is high, particularly the requirement on shock absorption is high, if the requirement on shock absorption cannot be met, the mechanical hard disk is easy to damage, and normal reading cannot be performed. At present, the inner space of the industrial personal computer is limited, and more mechanical hard disks are difficult to install, and particularly the problem that the requirement of shock absorption is met when the mechanical hard disks are added cannot be solved.

The utility model patent application of China with the publication number of CN210467327U discloses a multi-hard disk shock absorption support structure on the day of 11 and 13 in 2019, and particularly discloses a scheme for arranging a main support, an auxiliary support and a shock absorption connecting mechanism, but the utility model can not solve the problem of increasing the capacity of a mechanical hard disk and simultaneously meets the requirement of shock absorption effect.

Disclosure of Invention

The disclosure provides a mechanical hard disk assembly and a chassis, which are used for solving the technical problems that in the prior art, the installation capacity of the mechanical hard disk assembly is limited and the damping requirement is difficult to meet.

In order to solve the technical problem, the disclosure provides a mechanical hard disk assembly, which comprises a main support, an expansion support, hard disk units, a first damping component and a second damping component, wherein the expansion support is arranged on the main support, the hard disk units are respectively arranged on the main support and the expansion support, the first damping component is arranged on the main support and/or the expansion support, and the second damping components are respectively arranged between each hard disk unit and the main support and between each hard disk unit and the expansion support.

Optionally, the hard disk unit is one of a first hard disk, a second hard disk and a third hard disk, the capacity of the first hard disk is larger than that of the second hard disk, and the capacity of the first hard disk is smaller than that of the third hard disk;

the main support is provided with at least one first accommodation cavity, and the extension support is provided with at least one second accommodation cavity, and the second accommodation cavity is greater than first accommodation cavity, and every first accommodation cavity is equipped with first hard disk, and every second accommodation cavity is equipped with one of first hard disk, second hard disk and third hard disk.

Optionally, the mechanical hard disk assembly further comprises a first mounting bracket and a second mounting bracket;

the two opposite sides of the second accommodating cavity are respectively provided with a first mounting bracket, the first hard disk is arranged in the second accommodating cavity of the expansion bracket through the first mounting brackets, and a second damping component is arranged between the first hard disk and the first mounting brackets;

the second hard disk is arranged in the second accommodating cavity through a second mounting bracket, and a second damping component is arranged between the second hard disk and the second mounting bracket;

and a second damping component is arranged between the third hard disk and the second accommodating cavity.

Optionally, the first installing support of second holding chamber both sides includes first connecting plate, second connecting plate and third connecting plate respectively, and first connecting plate is connected at the second and is held the intracavity wall, and the second connecting plate is close to first hard disk, and the one side that the second connecting plate is close to first hard disk is equipped with second damper, and the third connecting plate is connected between first connecting plate and second connecting plate.

Optionally, the second installing support includes mounting panel and stopper, and the mounting panel is installed in the second and is held the intracavity, and it has two sets of limit blocks to distribute on the mounting panel, and the top of one set of limit block is crooked towards another set of limit block, forms fixed station between two sets of limit blocks, and the second hard disk is established in fixed station, and the stopper is close to the one side of second hard disk and is equipped with second damper.

Optionally, the first damping component comprises a buffer foam and a first buffer rubber ring, the buffer foam is arranged on the mounting surface of the main support, and the first buffer rubber ring is arranged on the surface of the main support and/or the surface of the expansion support.

Optionally, a first mounting hole is formed in the surface of the main support and/or the surface of the expansion support, a first annular groove is formed in the peripheral surface of the first buffer rubber ring, the first buffer rubber ring is arranged in the first mounting hole, and the side wall of the first mounting hole is clamped into the first annular groove;

the second damping component comprises a second buffer rubber ring, corresponding second mounting holes are formed in the first mounting support, the second mounting support, the main support and the expansion support, a second annular groove is formed in the second buffer rubber ring along the peripheral surface of the second buffer rubber ring, the second buffer rubber ring is arranged in the second mounting hole, and the side wall of the second mounting hole is clamped into the second annular groove.

Optionally, the mechanical hard disk assembly further comprises a connecting bracket, the connecting bracket is arranged at the top of the expansion bracket, and the buffer foam is arranged at the bottom of the main bracket.

Optionally, the mechanical hard disk assembly further comprises a connecting column, the connecting bracket comprises a fourth connecting plate, a fifth connecting plate and a sixth connecting plate, the fourth connecting plate and the fifth connecting plate are parallel to each other, and the sixth connecting plate is connected between the fourth connecting plate and the fifth connecting plate;

the spliced pole is established at the top of extension support, is equipped with the third mounting hole on the fourth connecting plate, and the spliced pole wears to establish in the third mounting hole, and the fourth connecting plate passes through third mounting hole and spliced pole to be installed at the top of extension support, is equipped with first buffering rubber circle between fourth connecting plate and the extension support.

The disclosure also provides a chassis, which comprises the mechanical hard disk assembly.

Compared with the prior art, in the mechanical hard disk assembly of the disclosure, the first damping assembly and the second damping assembly are used for damping. Since the hard disk units can be mounted to both the main support and the extension support, the number of hard disk units can be increased. The first damping component can damp the main bracket and the expansion bracket. Some of the second damper assemblies are used for damping vibration between the hard disk unit and the main support, and other of the second damper assemblies are used for damping vibration between the hard disk unit and the expansion support. Through setting up first damper and second damper, realize the dual shock attenuation to hard disk unit, main support and expansion bracket. The number and the capacity of the hard disk units are increased, and meanwhile, the requirement of shock absorption can be met.

The chassis of the present disclosure also has the above advantages, and will not be described herein.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to scale, unless expressly stated otherwise.

FIG. 1 is a schematic diagram of a mechanical hard disk assembly according to an embodiment of the disclosure;

FIG. 2 is a schematic structural diagram of a mechanical hard disk assembly according to another embodiment of the present disclosure, wherein the hard disk unit is a first hard disk;

FIG. 3 is a schematic structural diagram of a mechanical hard disk assembly according to another embodiment of the disclosure, wherein the hard disk units are a first hard disk and a second hard disk;

FIG. 4 is a schematic structural diagram of a mechanical hard disk assembly according to another embodiment of the disclosure, wherein the hard disk units are a first hard disk and a second hard disk;

FIG. 5 is an exploded view of a mechanical hard disk assembly according to one embodiment of the present disclosure, wherein the hard disk units are a first hard disk and a third hard disk;

FIG. 6 is an exploded view of a first hard disk and a first mounting bracket in an embodiment of the present disclosure;

FIG. 7 is an exploded view of a second hard disk and a second mounting bracket in an embodiment of the present disclosure;

FIG. 8 is an exploded view of a mechanical hard disk assembly in an embodiment of the present disclosure;

fig. 9 is an exploded view of a chassis in an embodiment of the present disclosure.

Detailed Description

In order to facilitate an understanding of the present disclosure, the present disclosure is described in more detail below in conjunction with the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like are used in this specification for purposes of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Furthermore, the terms first, second, third and the like in the description and in the claims, are used for descriptive purposes only and are not necessarily for describing relative importance or to indicate the number of features indicated or the order or timing of the description. The terms are interchangeable where appropriate. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Similarly, the terms "fixed," "connected," and "connected" are used throughout the description and claims and should not be construed as limited to a direct connection. Thus, the expression "device a is connected to device B" should not be limited to devices or systems in which device a is directly connected to device B, meaning that there is a path between device a and device B, which may be a path that includes other devices or tools.

In addition, the technical features referred to in the different embodiments of the present disclosure described below may be combined with each other as long as they do not make a conflict with each other.

Referring to fig. 1, an embodiment of the disclosure discloses a mechanical hard disk assembly 100, which includes a main support 10, an expansion support 20, a hard disk unit 30, a first shock absorbing assembly 40 and a second shock absorbing assembly 50, wherein the expansion support 20 is arranged on the main support 10, the hard disk unit 30 is respectively arranged on the main support 10 and the expansion support 20, the first shock absorbing assembly 40 is arranged on the main support 10 and the expansion support 20, and the second shock absorbing assembly 50 is respectively arranged between each hard disk unit 30 and the main support 10 and between each hard disk unit 20 and the expansion support 20.

In the mechanical hard disk assembly 100 of the present embodiment, the first damper assembly 40 and the second damper assembly 50 are used for damping. The user may install the first shock absorbing assembly 40 on the main support 10 and the extension support 20 as needed, and the number and installation positions of the first shock absorbing assembly 40 and the second shock absorbing assembly 50 may be set according to the user's needs. The main bracket 10 and the expansion bracket 20 can be integrally formed, and can be detachably connected. Since the hard disk unit 30 can be mounted to both the main support 10 and the extension support 20, the number of hard disk units 30 can be increased. The first shock assembly 40 may shock-absorb the main stent 10 and the extension stent 20. Some of the second damper assemblies 50 are used for damping between the hard disk unit 30 and the main support 10, and other of the second damper assemblies 50 are used for damping between the hard disk unit 30 and the expansion support 20. By providing the first and second damper assemblies 40 and 50, dual damping of the hard disk unit 30, the main support 10, and the expansion support 20 is achieved. The number and capacity of the hard disk units 30 are increased while the shock absorbing requirements can be satisfied.

It will be appreciated that in some embodiments, the first shock assembly 40 may be disposed on the main support 10 or the extension support 20.

In one embodiment, the first shock absorbing assembly 40 includes a cushion foam 42 and a first cushion rubber ring 44, the cushion foam 42 is disposed on a mounting surface of the main support 10, and the surface of the main support 10 and/or the expansion support 20 is provided with the first cushion rubber ring 44. The main support 10 can be installed in the machine case of the industrial computer, the bottom surface of the main support 10 is generally an installation surface, namely, the buffer foam 42 is installed on the bottom surface of the main support 10, the bottom surface and other side surfaces of the main support 10 and each side surface of the expansion support 20 can be further provided with the first buffer rubber ring 44, and the buffer foam 42 and the first buffer rubber ring 44 are combined with each other, so that the damping effect of the main support 10 and the expansion support 20 can be improved. The installation positions and the number of the cushion foam 42 and the first cushion rubber ring 44 can be adjusted and set according to the user's needs.

Referring to fig. 2 to 5, in one embodiment, the hard disk unit 30 is one of a first hard disk 32, a second hard disk 34 and a third hard disk 36, the capacity of the first hard disk 32 is larger than the capacity of the second hard disk 34, and the capacity of the first hard disk 32 is smaller than the capacity of the third hard disk 36; the main support 10 is provided with at least one first receiving chamber 12, the expansion support 20 is provided with at least a second receiving chamber 22, the second receiving chamber 22 is larger than the first receiving chamber 12, each first receiving chamber 12 is provided with a first hard disk 32, and each second receiving chamber 22 is provided with at least one of a first hard disk 32, a second hard disk 34 and a third hard disk 36. In general, the capacity of a hard disk determines the volume of the hard disk, which is proportional to the volume of the hard disk. Wherein, the first hard disk 32 may be a 3.5 inch hard disk, the second hard disk 34 may be a 2.5 inch hard disk, and the third hard disk 36 may be a 5.25 inch hard disk. Three first hard disks 32 may be installed in the first accommodating chamber 12, and two first hard disks 32, or two second hard disks 34, or two third hard disks 36, or one first hard disk 32 and one second hard disk 34, or one first hard disk 32 and one third hard disk 36, or one second hard disk 34 and one third hard disk 36 may be installed in the second accommodating chamber 22. The overall capacity of the mechanical hard disk assembly 100 can be increased, and hard disk units 30 with different types can be selectively installed according to the requirements of users, so that the adaptability is good, and the requirements of various application scenes and operations can be met.

Referring to fig. 6 to 8, in an embodiment, the mechanical hard disk assembly 100 further includes a first mounting bracket 60 and a second mounting bracket 70; the opposite sides of the second accommodating cavity 22 are respectively provided with a first mounting bracket 60, the first hard disk 32 is arranged on the inner wall of the second accommodating cavity 22 of the expansion bracket 20 through the first mounting brackets 60, and a second damping component 50 is arranged between the first hard disk 32 and the first mounting brackets 60; the second hard disk 34 is arranged on the inner wall of the second accommodating cavity 22 through a second mounting bracket 70, and a second shock absorption assembly 50 is arranged between the second hard disk 34 and the second mounting bracket 70; a second damper assembly 50 is disposed between the third hard disk 36 and the second receiving chamber 22. Since the capacity and size of the first hard disk 32 and the second hard disk 34 are smaller than those of the third hard disk 36, the second accommodating chamber 22 is larger than the first accommodating chamber 12 in design, and thus the third hard disk 36 can be directly installed in the second accommodating chamber 22. In order to improve the stability of the first hard disk 32 and the second hard disk 34, when the first hard disk 32 is installed, the first hard disk 32 is fixed on the inner wall of the second accommodating cavity 22 through the first mounting bracket 60, and the second hard disk 34 is fixed on the inner wall of the second accommodating cavity 22 through the second mounting bracket 70, so that different hard disk units 30 can be selectively installed according to the requirements of users, and the installation is firm. When the first hard disk 32 and the second hard disk 34 are mounted, a tailgate 24 may be further provided on the expansion bracket 20, the tailgate 24 serving to close the opening portion of the second accommodating chamber 22.

In an embodiment, the first mounting brackets 60 on two sides of the second accommodating cavity 22 respectively include a first connecting plate 62, a second connecting plate 64 and a third connecting plate 66, the first connecting plate 62 is connected to the inner wall of the second accommodating cavity 22, the second connecting plate 64 is close to the first hard disk 32, the second damping component 50 is disposed on one side of the second connecting plate 64 close to the first hard disk 32, and the third connecting plate 66 is connected between the first connecting plate 62 and the second connecting plate 64. The first connecting plates 62 can be connected to the inner wall of the second accommodating cavity 22 through screws, the second connecting plates 64 of the two first mounting brackets 60 are used for fixing the first hard disk 32 in a co-extrusion mode, and the third connecting plates 66 are used for connecting the first connecting plates 62 and the second connecting plates 64, so that the cross section of each first mounting bracket 60 is approximately U-shaped, and the two first mounting brackets 60 have a certain buffering effect when fixing the first hard disk 32, so that the damping effect can be further improved. The first connecting plate 62, the second connecting plate 64 and the third connecting plate 66 may be integrally formed or detachably connected.

In one embodiment, the second mounting bracket 70 includes a mounting plate 72 and a stop block 74, the mounting plate 72 is mounted within the second receiving chamber 22, and two sets of stop blocks 74 are distributed on the mounting plate 72, each set of stop blocks 74 including two stop blocks 74. The top of one group of limiting blocks 74 is bent towards the other group of limiting blocks 74, a fixing station 742 is formed between the two groups of limiting blocks 74, the second hard disk 34 is arranged in the fixing station 742, and the side, close to the second hard disk 34, of the limiting blocks 74 is provided with the second damping component 50. The mounting plate 72 is attached to the inner wall of the second receiving chamber 22 by screws. In some embodiments, the two ends of mounting plate 72 are respectively bent, the bent end of mounting plate 72 is in contact with the inner wall of second receiving chamber 22, and the screws connect the bent end of mounting plate 72 to the inner wall of second receiving chamber 22, which increases the strength of the connection between mounting plate 72 and the inner wall of second receiving chamber 22. The stopper 74 is located in the middle of the top surface of the mounting plate 72, and the fixing station 742 can fix the second hard disk 34, so as to improve the stability of the second hard disk 34. The bottom surface of the second hard disk 34 is attached to the top surface of the mounting plate 72, the top of the limiting block 74 is attached to the top surface of the second hard disk 34, and the limiting block 74 is attached to the side surface of the second hard disk 34, so that the second hard disk 34 can be limited and fixed from multiple angles.

In one embodiment, the surface of the main support 10 and/or the expansion support 20 is provided with a first mounting hole 14, the first buffer rubber ring 44 is provided with a first annular groove 442 along the peripheral surface thereof, the first buffer rubber ring 44 is arranged in the first mounting hole 14, and the side wall of the first mounting hole 14 is clamped into the first annular groove 442; the second shock absorbing assembly 50 includes a second buffer rubber ring 52, corresponding second mounting holes 54 are formed in the first mounting bracket 60, the second mounting bracket 70, the main bracket 10 and the expansion bracket 20, the second buffer rubber ring 52 is provided with a second annular groove 522 along the circumferential surface thereof, the second buffer rubber ring 52 is arranged in the second mounting hole 54, and the side wall of the second mounting hole 54 is clamped into the second annular groove 522. The side wall of the first mounting hole 14 is matched with the first annular groove 442, so that the first buffer rubber ring 44 can be mounted on the surface of the main support 10 and/or the expansion support 20, the mounting strength of the first buffer rubber ring 44 is improved, and the shock absorption effect can be ensured. The cushion foam 42 may be adhered to the bottom surface of the main support 10 by glue or the like. Similarly, the side wall of the second mounting hole 54 is matched with the second annular groove 522, so that the second buffer rubber ring 52 can be mounted on the first mounting bracket 60 or the second mounting bracket 70 or the inner wall of the first accommodating cavity 12 or the inner wall of the second accommodating cavity 22, the mounting strength of the second buffer rubber ring 52 is improved, and the damping effect can be ensured.

In one embodiment, the mechanical hard disk assembly 100 further includes a connection bracket 80, the connection bracket 80 is disposed at the top of the expansion bracket 20, and the cushion foam 42 is disposed at the bottom of the main bracket 10. Because the main support 10 and the extension support 20 are connected into a whole, the connecting support 80 is used for connecting a chassis of an industrial personal computer, the top of the extension support 20 is fixed through the connecting support 80, and the bottom of the main support 10 is damped by the buffer foam 42, so that the connection strength and the damping effect of the main support 10 and the extension support 20 can be further improved.

In one embodiment, the mechanical hard disk assembly 100 further includes a connection post 90, the connection bracket 80 includes a fourth connection plate 82, a fifth connection plate 84, and a sixth connection plate 86, the fourth connection plate 82 and the fifth connection plate 84 are parallel to each other, and the sixth connection plate 86 is connected between the fourth connection plate 82 and the fifth connection plate 84; the connecting column 90 is arranged at the top of the expansion bracket 20, the third mounting hole 822 is arranged on the fourth connecting plate 82, the connecting column 90 is arranged in the third mounting hole 822 in a penetrating manner, the fourth connecting plate 82 is arranged at the top of the expansion bracket 20 through the third mounting hole 822 and the connecting column 90, and the first buffer rubber ring 44 is arranged between the fourth connecting plate 82 and the expansion bracket 20. The connecting post 90 and the third mounting hole 822 on the fourth connecting plate 82 are matched with each other, so that the fourth connecting plate 82 is fixed on the top of the expansion bracket 20, and meanwhile, the first buffer rubber ring 44 can also be sleeved on the connecting post 90, so that the first buffer rubber ring 44 is also fixed. The fifth connecting plate 84 is used for being connected with the chassis of the industrial personal computer, and the sixth connecting plate 86 is used for connecting the fourth connecting plate 82 and the fifth connecting plate 84, so that a certain buffer effect can be formed between the expansion bracket 20 and the chassis, and the shock absorption performance can be further improved.

Referring to fig. 9, the embodiment of the disclosure further discloses a chassis 1000, including the mechanical hard disk assembly 100 and the chassis body 200, where the mechanical hard disk assembly 100 is installed on the chassis body 200. The case 1000 may be applied to an industrial personal computer. The chassis 1000 of the present embodiment also has the above advantages, and will not be described herein.

Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present disclosure, and are not limiting thereof; the technical features of the above embodiments or in different embodiments may also be combined under the idea of the present disclosure, the steps may be implemented in any order, and there are many other variations of the different aspects of the present disclosure as described above, which are not provided in details for the sake of brevity; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in each embodiment can be modified or part of the technical features can be replaced equivalently; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of each embodiment of the present disclosure.

Claims (10)

1. The mechanical hard disk assembly is characterized by comprising a main support, an expansion support, hard disk units, a first damping component and a second damping component, wherein the expansion support is arranged on the main support, the hard disk units are respectively arranged on the main support and the expansion support, the first damping component is arranged on the main support and/or the expansion support, and the second damping component is respectively arranged between each hard disk unit and the main support and between each hard disk unit and the expansion support.

2. The mechanical hard disk assembly of claim 1, wherein the hard disk unit is one of a first hard disk, a second hard disk, and a third hard disk, the first hard disk having a capacity greater than a capacity of the second hard disk, the first hard disk having a capacity less than a capacity of the third hard disk;

the main support is provided with at least one first accommodating cavity, the expansion support is provided with at least one second accommodating cavity, the second accommodating cavity is larger than the first accommodating cavity, each first accommodating cavity is provided with the first hard disk, and each second accommodating cavity is provided with one of the first hard disk, the second hard disk and the third hard disk.

3. The mechanical hard disk assembly of claim 2, further comprising a first mounting bracket and a second mounting bracket;

the two opposite sides of the second accommodating cavity are respectively provided with a first mounting bracket, the first hard disk is arranged in the second accommodating cavity of the expansion bracket through the first mounting brackets, and the second damping component is arranged between the first hard disk and the first mounting brackets;

the second hard disk is arranged in the second accommodating cavity through the second mounting bracket, and the second damping component is arranged between the second hard disk and the second mounting bracket;

and the second damping component is arranged between the third hard disk and the second accommodating cavity.

4. The mechanical hard disk assembly according to claim 3, wherein the first mounting brackets on two sides of the second accommodating cavity respectively comprise a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plate is connected to the inner wall of the second accommodating cavity, the second connecting plate is close to the first hard disk, the second damping assembly is arranged on one surface of the second connecting plate close to the first hard disk, and the third connecting plate is connected between the first connecting plate and the second connecting plate.

5. The mechanical hard disk assembly according to claim 3, wherein the second mounting bracket comprises a mounting plate and a limiting block, the mounting plate is mounted in the second accommodating cavity, two groups of limiting blocks are distributed on the mounting plate, the top of one group of limiting blocks is bent towards the other group of limiting blocks, a fixing station is formed between the two groups of limiting blocks, the second hard disk is arranged in the fixing station, and one surface, close to the second hard disk, of each limiting block is provided with the second damping component.

6. The mechanical hard disk assembly according to claim 3, wherein the first shock absorbing assembly comprises a buffer foam and a first buffer rubber ring, the buffer foam is arranged on the mounting surface of the main support, and the first buffer rubber ring is arranged on the surface of the main support and/or the surface of the expansion support.

7. The mechanical hard disk assembly according to claim 6, wherein a first mounting hole is formed in the surface of the main support and/or the expansion support, a first annular groove is formed in the circumferential surface of the first buffer rubber ring, the first buffer rubber ring is arranged in the first mounting hole, and the side wall of the first mounting hole is clamped into the first annular groove;

the second damping component comprises a second buffering rubber ring, a first mounting bracket, a second mounting bracket, a main bracket and a corresponding second mounting hole are formed in the expansion bracket, the second buffering rubber ring is provided with a second annular groove along the peripheral surface of the second buffering rubber ring, the second buffering rubber ring is arranged in the second mounting hole, and the side wall of the second mounting hole is clamped into the second annular groove.

8. The mechanical hard disk assembly of claim 6, further comprising a connecting bracket mounted on top of the expansion bracket, the cushion foam being disposed on bottom of the main bracket.

9. The mechanical hard disk assembly of claim 8, further comprising a connection post, the connection bracket comprising a fourth connection plate, a fifth connection plate, and a sixth connection plate, the fourth connection plate and the fifth connection plate being parallel to each other, the sixth connection plate being connected between the fourth connection plate and the fifth connection plate;

the connecting column is arranged at the top of the expansion bracket, a third mounting hole is formed in the fourth connecting plate, the connecting column penetrates through the third mounting hole, the fourth connecting plate is arranged at the top of the expansion bracket through the third mounting hole and the connecting column, and a first buffer rubber ring is arranged between the fourth connecting plate and the expansion bracket.

10. A chassis comprising the mechanical hard disk assembly of any one of claims 1 to 9.