CN108980247B - Rubber shock absorber for hard disk vibration reduction - Google Patents
Rubber shock absorber for hard disk vibration reduction Download PDFInfo
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- CN108980247B CN108980247B CN201710409658.1A CN201710409658A CN108980247B CN 108980247 B CN108980247 B CN 108980247B CN 201710409658 A CN201710409658 A CN 201710409658A CN 108980247 B CN108980247 B CN 108980247B
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- connecting part
- hard disk
- connecting portion
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- wall surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/08—Insulation or absorption of undesired vibrations or sounds
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a rubber vibration damper for damping vibration of a hard disk. The rubber damper for damping vibration of a hard disk includes: the central connecting part is used for connecting the hard disk; the outer periphery connecting part is used for being connected with the mounting bracket, is arranged at the outer periphery of the center connecting part, and has a radial gap between the outer periphery connecting part and the center connecting part; and a connecting arm connecting the center connecting portion and the outer peripheral connecting portion, wherein the center connecting portion and the outer peripheral connecting portion are staggered in a thickness direction, and the center connecting portion is deviated from the outer peripheral connecting portion toward the hard disk. The rubber damper of the invention utilizes the connecting arm to damp between the central connecting part and the outer periphery connecting part, and the central connecting part and the outer periphery connecting part are mutually staggered in the thickness direction (namely the direction vertical to the radial direction), thereby providing damping in three directions and greatly increasing the adaptive frequency domain.
Description
Technical Field
The invention relates to the technical field of hard disk vibration reduction, in particular to a rubber vibration reducer for hard disk vibration reduction.
Background
The shock absorber is applied to equipment such as a server in a mobile or vibrating environment and is used for reducing the damage effect of a hard disk caused by environmental vibration.
In the prior art, rubber dampers are generally formed by mixing rubber elasticity and damping materials, and each has a damping effect in its own frequency band. In addition, the existing rubber dampers are usually designed in a solid body structure or a flattened structure. When the solid or flat rubber vibrates and impacts, the unidirectional action is obvious, the multidirectional action is poor, and the vibration of the actual environment is in multiple directions; the adaptive frequency domain is narrow, the frequency point of the vibration damping effect of the frequency domain is about 100Hz, and the vibration damping performance is very limited.
It is therefore desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
Interpretation of terms
Long chain molecule: is a macromolecule form of rubber, and the rotation form of the molecule has the characteristic of diversity;
wide damping temperature range: the damping is effective in a plurality of frequency bands, and the adaptive temperature range is wide;
vermicularizing: the base material and the additive can be inoculated and the tissue structure can be improved by adding the vermiculizer; the performance adaptive range becomes wider;
and (3) vulcanization: the process of forming netted polymer with linear polymer through cross linking.
Glass transition: the amorphous polymer material has inherent properties, is a macroscopic embodiment of the transition of a polymer motion form, and directly influences the service performance and the process performance of the material, so that the amorphous polymer material is a main content of polymer physical research for a long time.
Damping: the method refers to the characteristic that the vibration amplitude of any vibration system is gradually reduced in vibration due to external action or the inherent reason of the system, and the quantitative representation of the characteristic.
The section modulus is also called section resisting moment. The moment of inertia of the cross section of the member being bent about its neutral axis is divided by the distance from the neutral axis to the outermost edge of the section.
It is an object of the present invention to provide a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.
In order to achieve the above object, the present invention provides a rubber damper for damping vibration of a hard disk, comprising:
the central connecting part is used for connecting the hard disk;
the outer periphery connecting part is used for being connected with the mounting bracket, is arranged at the outer periphery of the center connecting part, and has a radial gap between the outer periphery connecting part and the center connecting part; and
a connecting arm connecting the central connecting portion and the outer peripheral connecting portion,
the central connecting part and the peripheral connecting part are mutually staggered in the thickness direction, and the central connecting part deviates from the peripheral connecting part to the hard disk.
Preferably, the outer wall surface of the central connecting portion is a cylindrical surface, the inner wall surface of the peripheral connecting portion is a cylindrical surface, the outer wall surface of the central connecting portion and the inner wall surface of the peripheral connecting portion have a common axis, the inner end of the connecting arm is connected to the outer wall surface of the central connecting portion, the outer end of the connecting arm is connected to the inner wall surface of the peripheral connecting portion, the connecting arm is multiple in number and is uniformly distributed on the circumference.
Preferably, the connecting arm extends from an inner end to an outer end in a spiral curve.
Preferably, the rubber damper for damping vibration of a hard disk further comprises an embedded metal sheet embedded in the central connecting portion.
Preferably, the rubber damper is made of butyl rubber doped with stearic acid and zinc oxide.
Preferably, the weight ratio of the butyl rubber, the stearic acid and the zinc oxide is 100: (7 to 9): (1 to 3).
Preferably, carbon black and a vulcanizing agent are further blended in the rubber damper.
Preferably, the peripheral connecting portion is connected to the mounting bracket by vulcanization.
The rubber damper of the invention utilizes the connecting arm to damp between the central connecting part and the outer periphery connecting part, and the central connecting part and the outer periphery connecting part are mutually staggered in the thickness direction (namely the direction vertical to the radial direction), thereby providing damping in three directions and greatly increasing the adaptive frequency domain.
Drawings
Fig. 1 is a schematic perspective view of a rubber damper for damping vibration of a hard disk according to an embodiment of the present invention.
Fig. 2 is a schematic plan view of the rubber damper for hard disk damping shown in fig. 1.
Reference numerals:
| 1 | |
3 | Connecting |
| 2 | Outer peripheral connecting portion |
Detailed Description
In the drawings, the same or similar reference numerals are used to denote the same or similar elements or elements having the same or similar functions. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 and 2 show a rubber damper for damping vibration of a hard disk according to an embodiment of the present invention. The rubber vibration absorber is made of rubber and used for installing the hard disk to the hard disk bracket and absorbing vibration of the hard disk. It should be noted that the hard disk and the hard disk holder may be in any specific structure and form, and are within the scope of the present invention.
The illustrated rubber damper for damping vibration of a hard disk includes: a central connecting portion 1, a peripheral connecting portion 2 and a connecting arm 3. The outer peripheral joint part 2 is arranged at the outer periphery of the central joint part 1, substantially around the central joint part 1. There is a radial gap between the peripheral connection 2 and the central connection 1. The connecting arm 3 connects the central connecting portion 1 and the peripheral connecting portion 2. In the case of vibrations, damping is achieved primarily by deformation of the connecting arm 3.
The central connection portion is used for connection with a hard disk, for example, to a housing of the hard disk or to a hard disk holder carrying the hard disk, or the like. The central connecting part can be directly connected with the hard disk, and the central connecting part can also be indirectly connected with the hard disk, and the two connecting modes are within the protection scope of the invention. The central connection portion can be connected to the hard disk or to a support carrying the hard disk in any suitable manner and structure. Preferably, the central connection is connected to the hard disk by a screw, bolt or like threaded connection. Alternatively, the central connection can be connected to the hard disk in a vulcanized form.
In an alternative embodiment, the rubber damper for damping the hard disk further comprises an embedded metal sheet embedded in the central connecting part 1. On the one hand, the strength of the central connecting part is improved, and on the other hand, the embedded metal sheets can provide mounting interfaces to realize the connection of the central connecting part and a hard disk or a hard disk bracket. For example, a central through hole may be provided on the embedded metal sheet to connect the hard disk or the hard disk holder to the central connection part by a screw connection passing through the central through hole. The periphery of the central through hole in the embedded metal sheet can be provided with a plurality of small holes for assisting in realizing circumferential positioning of the embedded metal sheet relative to the central connecting part. Advantageously, one end or both ends of the embedded metal sheet are exposed out of the central connecting part 1 and used as an installation positioning surface. In an alternative embodiment, an internal thread is provided on the central through bore. When the hard disk drive is installed, the threaded connecting piece penetrates through the installation hole in the hard disk shell and is screwed into the central through hole.
The peripheral connecting portion 2 is used for connection with a mounting bracket. In the present invention, the "mounting bracket" refers to a base for mounting a hard disk, a rack or a tray fixed to the base, or the like. The peripheral connecting portion 2 can be connected to the mounting bracket in any suitable manner and structure. Alternatively, the peripheral connecting portion 2 is connected to the mounting bracket in a vulcanized form. As shown in fig. 2, the outer peripheral connecting portion 2 is disposed on the outer periphery of the center connecting portion 1 with a radial gap therebetween, as viewed in parallel with the thickness direction. Thus, the outer peripheral connecting part 2 and the central connecting part 1 can move in the radial direction relatively to each other to absorb vibration energy.
As shown in fig. 1, the center connection portion and the outer periphery connection portion are offset from each other in the thickness direction, and the center connection portion is offset from the outer periphery connection portion toward the hard disk.
In a preferred embodiment, the outer wall surface of the central connecting portion 1 is a cylindrical surface, the inner wall surface of the peripheral connecting portion 2 is a cylindrical surface, and the outer wall surface of the central connecting portion 1 and the inner wall surface of the peripheral connecting portion 2 have a common axis. Thus, there is a uniform radial gap between the outer wall surface of the center connecting portion 1 and the inner wall surface of the outer circumferential connecting portion 2 in an unstressed state. The inner end of the connecting arm 3 is connected to the outer wall surface of the central connecting part 1, the outer end of the connecting arm 3 is connected to the inner wall surface of the peripheral connecting part 2, and the connecting arms are distributed uniformly on the circumference. Therefore, the inner wall surface and the outer wall surface have simple structure and good processability, and uniform radial gaps are formed between the inner wall surface and the outer wall surface so as to adapt to and allow deformation in all directions and avoid direct friction between the inner wall surface and the outer wall surface as much as possible.
In an alternative embodiment, the outer wall surface of the central connecting portion 1 is square in cross section, and is provided with round corners, and the inner wall surface of the outer peripheral connecting portion 2 is a cylindrical surface. A connecting arm is extended and connected to the inner wall surface of the outer peripheral connecting part 2 at the middle of each of the four straight sections of the outer wall surface of the central connecting part 1. In another alternative embodiment, the outer wall surface of the central connecting portion 1 and the inner wall surface of the peripheral connecting portion 2 are both rounded and square, i.e. the cross section is square, and rounded transitions are provided at the corners. As shown in fig. 1, the connecting arm extends spirally curved from an inner end to an outer end. That is, the connection arm 3 is bent both in the radial direction and in the thickness direction. In other words, the outer end of the connecting arm 3 rotates relative to the inner end of the connecting arm 3 both about an axis parallel to the thickness direction and about an axis perpendicular to the thickness direction. Thus, the connecting arm is able to damp vibrations in a plurality of directions when vibrating. Further, as shown in fig. 1, a plurality of connecting arms extending in a spirally bent manner are arranged in a centrosymmetric manner. By such a combination of a plurality of helically curved extending connecting arms, the connecting arms can have a large cross-sectional diameter, so that the connection between the central connecting portion 1 and the outer circumferential connecting portion 2 has both good elasticity and good connection strength, and vibrations at wider frequencies can be damped and suppressed.
In an alternative embodiment, the connecting arm is a straight extending connecting arm, so that the structure is simpler and the manufacture is convenient.
The rubber damper is generally made of a rubber material by integral molding. Specifically, the rubber damper is manufactured by using butyl rubber as a base material and doping auxiliary material auxiliaries such as stearic acid and zinc oxide. The butyl rubber has higher glass transition temperature, so that the environmental adaptability is stronger.
In one embodiment, the weight ratio of butyl rubber, stearic acid, zinc oxide and 100: (7 to 9): (1 to 3). For example, the weight ratio of butyl rubber, stearic acid and zinc oxide is 100: 8: 2. advantageously, carbon black and a vulcanizing agent are further blended in the rubber damper. This is beneficial to make the damping higher at both low and high frequencies and to reduce the aging rate of the finished product at a high temperature in the range of 70-90 ℃.
In one embodiment, the specific formulations and process parameters are as follows.
Firstly, the method comprises the following steps: raw materials:
II, formula:
third, the process
Placing the butyl rubber on an open mill for plasticating for 20 minutes, uniformly rolling and spreading the butyl rubber for not less than 20 times, then enlarging the roller spacing, sequentially adding stearic acid, zinc oxide, carbon black and an auxiliary agent, thinly passing for 8-10 times, and discharging the sheet. In another process, the butyl rubber is placed on an open mill, firstly, the temperature is heated to 150 ℃, the pressure is kept at 150MPa, and plastication is carried out for 5 minutes; adding stearic acid and zinc oxide, and then continuing to plasticate for 5 minutes; then adding carbon black and proper auxiliary agent (if necessary), raising the temperature to 180 ℃, raising the pressure to 175MPa, plasticating for 5-8 minutes, rolling and spreading for not less than 10 times; and then keeping the temperature and the pressure to plasticate continuously until the thin sheet is formed into a sheet.
Vulcanization conditions are as follows: 180 ℃ X20 min, pressure 175 MPa.
Based on the characteristics of the rubber body, the adaptive temperature range is narrow, the properties of the shock absorber can be greatly changed after the temperature of the shock absorber is generally 60 ℃, and the shock absorber is extremely easy to age under the changeable environment that the rubber is melted and solidified after being heated and cooled, so that the shock absorption performance is greatly reduced. But the rubber after the treatment has better performance.
In a preferred embodiment, the peripheral connection portion is connected to the mounting bracket plate by vulcanization.
The rubber damper of the invention utilizes the connecting arm to damp between the central connecting part and the outer periphery connecting part, and the central connecting part and the outer periphery connecting part are mutually staggered in the thickness direction (namely the direction vertical to the radial direction), thereby providing damping in three directions and greatly increasing the adaptive frequency domain.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Those of ordinary skill in the art will understand that: modifications can be made to the technical solutions described in the foregoing embodiments, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A rubber damper for damping vibration of a hard disk, comprising:
the central connecting part (1) is used for being connected with the hard disk;
the outer periphery connecting part (2) is used for being connected with the mounting bracket, is arranged at the outer periphery of the center connecting part (1), has a radial gap between the outer periphery connecting part (2) and the center connecting part (1), can perform relative radial movement on the outer periphery connecting part (2) and the center connecting part (1) so as to perform vibration reduction and absorb vibration energy, and is connected to the mounting bracket by a vulcanization mode; and
a connecting arm (3) connecting the central connecting portion (1) and the outer peripheral connecting portion (2),
the central connecting part and the peripheral connecting part are staggered in the thickness direction, the central connecting part deviates from the peripheral connecting part to the hard disk, and the connecting arm bends in the radial direction and also bends in the thickness direction.
2. The rubber damper for hard disk vibration damping according to claim 1, wherein the outer wall surface of the center connecting portion is a cylindrical surface, the inner wall surface of the outer peripheral connecting portion is a cylindrical surface, and the outer wall surface of the center connecting portion and the inner wall surface of the outer peripheral connecting portion have a common axis, the inner ends of the link arms are connected to the outer wall surface of the center connecting portion, the outer ends of the link arms are connected to the inner wall surface of the outer peripheral connecting portion, and the number of the link arms is plural and is uniformly distributed on the circumference.
3. The rubber damper for hard disk vibration damping according to claim 2, wherein said connecting arm extends spirally bent from an inner end to an outer end.
4. A rubber damper for vibration damping of hard disks according to any of claims 1 to 3, further comprising an embedded metal sheet embedded in said central connection portion (1).
5. A rubber damper for hard disk vibration damping according to any one of claims 1 to 3, wherein said rubber damper is made of butyl rubber doped with stearic acid and zinc oxide.
6. A rubber damper for vibration damping of hard disks as claimed in claim 5, wherein said butyl rubber, stearic acid and zinc oxide are in a weight ratio of 100: (7 to 9): (1 to 3).
7. The rubber damper for hard disk vibration damping according to claim 5, wherein carbon black and a vulcanizing agent are further incorporated in said rubber damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409658.1A CN108980247B (en) | 2017-06-02 | 2017-06-02 | Rubber shock absorber for hard disk vibration reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409658.1A CN108980247B (en) | 2017-06-02 | 2017-06-02 | Rubber shock absorber for hard disk vibration reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980247A CN108980247A (en) | 2018-12-11 |
| CN108980247B true CN108980247B (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710409658.1A Active CN108980247B (en) | 2017-06-02 | 2017-06-02 | Rubber shock absorber for hard disk vibration reduction |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1528057A (en) * | 1976-01-20 | 1978-10-11 | Westland Aircraft Ltd | Vibration absorbers |
| KR100505637B1 (en) * | 2002-06-18 | 2005-08-03 | 삼성전자주식회사 | Disc drive using vibration absorber |
| CN101825149A (en) * | 2009-03-02 | 2010-09-08 | 仁宝电脑工业股份有限公司 | Buffering elastic sheet and assembling method of electronic device using same |
| CN201436659U (en) * | 2009-05-08 | 2010-04-07 | 中国船舶重工集团公司第七〇四研究所 | Wire rope type vibration isolator for computer hard disk |
| CN202662287U (en) * | 2012-06-11 | 2013-01-09 | 深圳瑞信视讯技术有限公司 | Vehicle-mounted hard disk device and honeycomb damping device thereof |
| CN105295211A (en) * | 2015-11-20 | 2016-02-03 | 浙江世泰实业有限公司 | High-damping rubber composition and preparation method therefor |
| CN205503847U (en) * | 2016-03-18 | 2016-08-24 | 青岛军英装备科技有限公司 | Multidimension damping spring |
| CN106678233A (en) * | 2016-12-05 | 2017-05-17 | 湖南大学 | Novel active absorber based on PZT (piezoelectric ceramic) |
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2017
- 2017-06-02 CN CN201710409658.1A patent/CN108980247B/en active Active
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| CN108980247A (en) | 2018-12-11 |
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