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WO2003049116A1 - Vibration-proof damper - Google Patents

Vibration-proof damper Download PDF

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Publication number
WO2003049116A1
WO2003049116A1 PCT/KR2001/001779 KR0101779W WO03049116A1 WO 2003049116 A1 WO2003049116 A1 WO 2003049116A1 KR 0101779 W KR0101779 W KR 0101779W WO 03049116 A1 WO03049116 A1 WO 03049116A1
Authority
WO
WIPO (PCT)
Prior art keywords
vibration
damper
lid
main body
sheet metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2001/001779
Other languages
French (fr)
Inventor
Young-Mun Yoon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alpha Precision Co Ltd
Original Assignee
Alpha Precision Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alpha Precision Co Ltd filed Critical Alpha Precision Co Ltd
Priority to CNB018175155A priority Critical patent/CN1316500C/en
Priority to PCT/KR2001/001779 priority patent/WO2003049116A1/en
Publication of WO2003049116A1 publication Critical patent/WO2003049116A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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

Definitions

  • the present invention relates to a vibration-proof damper, and more particularly, to an improved vibration-proof damper for use in absorbing and reducing vibration from decks of compact disk players and the like, wherein its performance can be hardly deteriorated due to its temperature change and its workability is superior.
  • CDs compact disks
  • a process of causing a motor to rotate the CD should be generally performed.
  • a typical example on an apparatus for performing the reproduction is a CD player.
  • the CD player includes a device for preventing the vibration and external shock from propagating to the CD itself.
  • three or more dampers 12 are generally installed on a deck 11 of the CD player, as shown in FIG. 1. Thus, it is designed in such a manner that the vibration due to the rotation of the motor cannot have an adverse influence on the reproduction of the CD.
  • the dampers are generally categorized into air dampers and vibration-proof dampers according to which one of air and oil is selected as a shock-absorbing material.
  • the present invention is directed to the vibration-proof damper that is one of the two kinds of the dampers.
  • the vibration-proof damper which is widely used in the art, includes an elastomer damper and a rubber damper.
  • the elastomer damper 20 comprises a first main body 21 made of polypropylene (PP), a second main body 22 made of elastomer, and a lid 23 made of polypropylene.
  • PP polypropylene
  • the reason that the two main bodies 21, 22 are manufactured separately from different materials is that the first main body 21 should function to cause the damper to be kept at its predetermined shape by means of its adequate stiffness, whereas the second main body 22 should perform a function as a shock-absorbing material due to its considerable resiliency or flexibility.
  • a process of manufacturing the elastomer damper will be briefly explained.
  • the two main bodies 21, 22 are coupled with each other, and the coupled main bodies are inverted as shown in the figure.
  • a predetermined amount of silicon oil is injected into a space defined by the main bodies 21, 22, and the opening of the first main body is plugged up with the lid 23.
  • the first main body 21 and the lid 23 are welded with each other by applying heat to portions where they are in contact with each other. Consequently, an elastomer damper is completed.
  • a hole 24 is a connection hole used for attaching the elastomer damper 20 to the deck.
  • the elastomer damper manufactured through the above process has an advantage in that it can be conveniently attached to the deck.
  • the elastomer damper has disadvantages in that its damping performance is greatly deteriorated at a higher or lower temperature out of a specific temperature range due to inherent characteristics of synthetic resin materials such as polypropylene and its production costs are high.
  • a rubber damper 30 shown in FIG. 3 comprises a main body 31 and a lid 32 which are made of a rubber material.
  • the silicon oil is injected into an internal space of the inverted main body 31 in the same manner as the elastomer damper.
  • the main body 31 and the lid 32 are coupled with each other by using an additional adhesive rather than the welding process used in the elastomer damper.
  • the rubber damper has advantages in that the deterioration in its damping performance due to the temperature change is small and its production costs are low.
  • An object of the present invention is to provide an improved vibration-proof damper wherein its damping performance can be hardly deteriorated due to temperature change and its workability is superior.
  • the vibration-proof damper for achieving the object of the present invention comprises a main body made of a rubber material and a lid made of a rigid plate material. Further, a viscous liquid material is injected into a space defined between the main body and the lid.
  • the rigid plate material of the lid is selected form one of the following materials: (1) a sheet metal material coated with a rubber material, (2) a hard synthetic resin material coated with a rubber material, (3) a sheet metal material, and (4) a hard synthetic resin material.
  • a vibration-absorbing damper 40 of the first embodiment of the present invention comprises a main body 41 made of a rubber material, a lid 42 bonded to the main body, and a predetermined amount of viscous liquid material w. injected into an interior space defined by the main body 41 and the lid 42.
  • the viscous liquid material means a wide range of liquid materials which function as shock-absorbing materials including the aforementioned silicon oil.
  • the lid 42 which serves as a characteristic component of the present invention, is composed of a sheet metal material 42-a and a rubber material 42 -b which are bonded with each other. More specifically, the lid is manufactured in such a manner that rubber with a thickness of about 0.4 mm is bonded with pressure, i.e. coated onto a galvanized steel sheet with a thickness of about 0.8 mm.
  • the above bonding process is performed in the following manner.
  • the sheet metal material 42-a and the rubber material 42-b are placed between two upper and lower pressing plates according to the arrangement shown in the figure. Then, the two pressing plates are moved toward each other to press the sheet metal and rubber materials in a state where the upper and lower pressing plates are kept at about 120°C and 70 °C, respectively.
  • the galvanized sheet metal has been selected as the sheet metal material 42-a.
  • any kinds of sheet metal materials can be used as the sheet metal material of the present invention, so far as they have fundamental requirements, such as corrosion resistance, of parts to be attached to the CD player. Thus, their kinds of materials need not be specifically restricted.
  • the main body 41 and the lid 42 are bonded with each other by using a predetermined adhesive after the predetermined amount of the viscous liquid material w is injected into the interior space of the main body 41 and the main body 41 is then covered with the lid 42.
  • This process is performed in the same manner as the rubber damper shown in FIG. 3.
  • a hole 44 is also provided to allow the damper to be easily attached to the deck.
  • a vibration- proof damper according to a second preferred embodiment of the present invention may be constructed by replacing the sheet metal material 42-a of the first embodiment with a hard synthetic resin material.
  • the second embodiment is identical to the first embodiment except that the sheet metal material such as the galvanized sheet metal is replaced with the hard synthetic resin material.
  • any other methods of boding the rubber material with the sheet metal material or the hard synthetic resin material may be used in either of the two embodiments of the present invention.
  • FIG. 5 shows a vibration-proof damper according to a third preferred embodiment of the present invention.
  • the vibration-proof damper 50 of the third embodiment is characterized in that a main body 51, which is made of the same rubber material as in the first and second embodiments, is bonded with a lid 52 made of only the sheet metal material such as the galvanized sheet metal.
  • a contact area between the main body 51 and the lid 52 should be relatively large, considering that they are manufactured from different materials.
  • a vibration-proof damper according to a fourth preferred embodiment of the present invention is not shown in the figures, because it takes the same shape as the third embodiment.
  • the vibration-proof damper of the fourth embodiment may be constructed in such a manner that the lid 52 is made of the hard synthetic resin material other than the sheet metal material.
  • the fourth embodiment is identical to the third embodiment except that the lid 52 is made of the hard synthetic resin material instead of the sheet metal material such as the galvanized sheet metal.
  • the vibration-proof dampers 40, 50 of the present invention are characterized in that the main bodies 41, 51 are made of the rubber material to prevent their damping performance from being deteriorated due to the temperature change and the lids 42, 52 are made of the rigid plate material to have sufficient stiffness, so that the attachment characteristics of the dampers to the deck can be enhanced.
  • the vibration-proof damper of the present invention has an additional advantage in that the production costs thereof are as low as the conventional rubber damper.
  • the vibration-proof damper of the present invention can be widely used in recently available recording medium reproduction apparatuses such as CD players.

Landscapes

  • Combined Devices Of Dampers And Springs (AREA)

Abstract

The present invention relates to a vibration-proof damper that functions as a shock-absorbing part of a compact disk player. The vibration-proof damper comprises a main body (41) made of a rubber material, a lid (42) made of a rigid plate material and bonded to the main body (41), and a predetermined amount of viscous liquid material w injected into an interior space defined by the main body (41) and the lid (42). Therefore, the damping performance of the damper can be hardly deteriorated due to its temperature change and workability thereof is superior.

Description

VIBRATION-PROOF DAMPER
Technical Field The present invention relates to a vibration-proof damper, and more particularly, to an improved vibration-proof damper for use in absorbing and reducing vibration from decks of compact disk players and the like, wherein its performance can be hardly deteriorated due to its temperature change and its workability is superior.
Background Art
Recently, compact disks (CDs) are very widely used as media for allowing various kinds of media objects such as audios or videos to be recorded thereon.
In order to reproduce various kinds of the media objects recorded on the CD, a process of causing a motor to rotate the CD should be generally performed. A typical example on an apparatus for performing the reproduction is a CD player. Similarly to all equipment to which vibration due to rotation of a motor disposed therein and movement thereof and external shock are inherently exerted, the CD player includes a device for preventing the vibration and external shock from propagating to the CD itself. For example, three or more dampers 12 are generally installed on a deck 11 of the CD player, as shown in FIG. 1. Thus, it is designed in such a manner that the vibration due to the rotation of the motor cannot have an adverse influence on the reproduction of the CD.
The dampers are generally categorized into air dampers and vibration-proof dampers according to which one of air and oil is selected as a shock-absorbing material. The present invention is directed to the vibration-proof damper that is one of the two kinds of the dampers. The vibration-proof damper, which is widely used in the art, includes an elastomer damper and a rubber damper.
Referring to FIG. 2, the elastomer damper 20 comprises a first main body 21 made of polypropylene (PP), a second main body 22 made of elastomer, and a lid 23 made of polypropylene.
The reason that the two main bodies 21, 22 are manufactured separately from different materials is that the first main body 21 should function to cause the damper to be kept at its predetermined shape by means of its adequate stiffness, whereas the second main body 22 should perform a function as a shock-absorbing material due to its considerable resiliency or flexibility.
A process of manufacturing the elastomer damper will be briefly explained. First, the two main bodies 21, 22 are coupled with each other, and the coupled main bodies are inverted as shown in the figure. Then, a predetermined amount of silicon oil is injected into a space defined by the main bodies 21, 22, and the opening of the first main body is plugged up with the lid 23. Thereafter, the first main body 21 and the lid 23 are welded with each other by applying heat to portions where they are in contact with each other. Consequently, an elastomer damper is completed.
Furthermore, a hole 24 is a connection hole used for attaching the elastomer damper 20 to the deck.
The elastomer damper manufactured through the above process has an advantage in that it can be conveniently attached to the deck. However, the elastomer damper has disadvantages in that its damping performance is greatly deteriorated at a higher or lower temperature out of a specific temperature range due to inherent characteristics of synthetic resin materials such as polypropylene and its production costs are high.
In addition, a rubber damper 30 shown in FIG. 3 comprises a main body 31 and a lid 32 which are made of a rubber material.
As shown in the figure, the silicon oil is injected into an internal space of the inverted main body 31 in the same manner as the elastomer damper. However, the main body 31 and the lid 32 are coupled with each other by using an additional adhesive rather than the welding process used in the elastomer damper.
The rubber damper has advantages in that the deterioration in its damping performance due to the temperature change is small and its production costs are low.
However, since an additional injection mold (not shown) for fixedly holding the damper upon attachment of the damper to the deck is further required, there is a disadvantage in that its workability is deteriorated.
Disclosure of Invention
Accordingly, the present invention is contemplated to solve the problems in the prior art. An object of the present invention is to provide an improved vibration-proof damper wherein its damping performance can be hardly deteriorated due to temperature change and its workability is superior.
The vibration-proof damper for achieving the object of the present invention comprises a main body made of a rubber material and a lid made of a rigid plate material. Further, a viscous liquid material is injected into a space defined between the main body and the lid.
Furthermore, although it will be described later in preferred embodiments of the present invention, the rigid plate material of the lid is selected form one of the following materials: (1) a sheet metal material coated with a rubber material, (2) a hard synthetic resin material coated with a rubber material, (3) a sheet metal material, and (4) a hard synthetic resin material.
Rest Mode for Carrying Out the Invention
Hereinafter, a vibration-proof damper according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in FIG. 4, a vibration-absorbing damper 40 of the first embodiment of the present invention comprises a main body 41 made of a rubber material, a lid 42 bonded to the main body, and a predetermined amount of viscous liquid material w. injected into an interior space defined by the main body 41 and the lid 42.
Herein, the viscous liquid material . means a wide range of liquid materials which function as shock-absorbing materials including the aforementioned silicon oil.
The lid 42, which serves as a characteristic component of the present invention, is composed of a sheet metal material 42-a and a rubber material 42 -b which are bonded with each other. More specifically, the lid is manufactured in such a manner that rubber with a thickness of about 0.4 mm is bonded with pressure, i.e. coated onto a galvanized steel sheet with a thickness of about 0.8 mm.
The above bonding process is performed in the following manner. The sheet metal material 42-a and the rubber material 42-b are placed between two upper and lower pressing plates according to the arrangement shown in the figure. Then, the two pressing plates are moved toward each other to press the sheet metal and rubber materials in a state where the upper and lower pressing plates are kept at about 120°C and 70 °C, respectively. In this preferred embodiment of the present invention, the galvanized sheet metal has been selected as the sheet metal material 42-a. However, any kinds of sheet metal materials can be used as the sheet metal material of the present invention, so far as they have fundamental requirements, such as corrosion resistance, of parts to be attached to the CD player. Thus, their kinds of materials need not be specifically restricted. The main body 41 and the lid 42 are bonded with each other by using a predetermined adhesive after the predetermined amount of the viscous liquid material w is injected into the interior space of the main body 41 and the main body 41 is then covered with the lid 42. This process is performed in the same manner as the rubber damper shown in FIG. 3. Similarly to the hole of the elastomer damper shown in FIG. 2, a hole 44 is also provided to allow the damper to be easily attached to the deck.
In addition, although it has not been separately shown in the figures, a vibration- proof damper according to a second preferred embodiment of the present invention may be constructed by replacing the sheet metal material 42-a of the first embodiment with a hard synthetic resin material.
That is, the second embodiment is identical to the first embodiment except that the sheet metal material such as the galvanized sheet metal is replaced with the hard synthetic resin material.
Of course, instead of using the aforementioned pressure bonding process, any other methods of boding the rubber material with the sheet metal material or the hard synthetic resin material may be used in either of the two embodiments of the present invention.
FIG. 5 shows a vibration-proof damper according to a third preferred embodiment of the present invention. The vibration-proof damper 50 of the third embodiment is characterized in that a main body 51, which is made of the same rubber material as in the first and second embodiments, is bonded with a lid 52 made of only the sheet metal material such as the galvanized sheet metal.
In such a case, as shown in the figure, a contact area between the main body 51 and the lid 52 should be relatively large, considering that they are manufactured from different materials.
Furthermore, a vibration-proof damper according to a fourth preferred embodiment of the present invention is not shown in the figures, because it takes the same shape as the third embodiment. However, the vibration-proof damper of the fourth embodiment may be constructed in such a manner that the lid 52 is made of the hard synthetic resin material other than the sheet metal material.
That is, the fourth embodiment is identical to the third embodiment except that the lid 52 is made of the hard synthetic resin material instead of the sheet metal material such as the galvanized sheet metal.
Accordingly, the vibration-proof dampers 40, 50 of the present invention are characterized in that the main bodies 41, 51 are made of the rubber material to prevent their damping performance from being deteriorated due to the temperature change and the lids 42, 52 are made of the rigid plate material to have sufficient stiffness, so that the attachment characteristics of the dampers to the deck can be enhanced.
Moreover, the vibration-proof damper of the present invention has an additional advantage in that the production costs thereof are as low as the conventional rubber damper.
Industrial Applicability
As described above, the vibration-proof damper of the present invention can be widely used in recently available recording medium reproduction apparatuses such as CD players.

Claims

1. A vibration-proof damper, comprising: a main body (41 ; 51 ) made of a rubber material; a lid (42; 52) made of a rigid plate material and bonded to the main body (41;
51); and a viscous liquid material (w) injected into an interior space defined by the main body (41; 51) and the lid (42; 52).
2. The vibration-proof damper as claimed in claim 1, wherein the rigid plate material for constructing the lid (42) is comprised of a sheet metal material (42-a) and a rubber material (42-b) coated on the sheet metal material.
3. The vibration-proof damper as claimed in claim 1, wherein the rigid plate material for constructing the lid (42) is comprised of a hard synthetic resin material and a rubber material (42-b) coated on the hard synthetic resin material.
4. The vibration-proof damper as claimed in claim 1, wherein the rigid plate material for constructing the lid (52) is comprised of only a sheet metal material.
5. The vibration-proof damper as claimed in claim 1, wherein the rigid plate material for constructing the lid (52) is comprised of only a hard synthetic resin material.
PCT/KR2001/001779 2001-10-20 2001-10-20 Vibration-proof damper Ceased WO2003049116A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNB018175155A CN1316500C (en) 2001-10-20 2001-10-20 Vibration isolator
PCT/KR2001/001779 WO2003049116A1 (en) 2001-10-20 2001-10-20 Vibration-proof damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2001/001779 WO2003049116A1 (en) 2001-10-20 2001-10-20 Vibration-proof damper

Publications (1)

Publication Number Publication Date
WO2003049116A1 true WO2003049116A1 (en) 2003-06-12

Family

ID=19198461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2001/001779 Ceased WO2003049116A1 (en) 2001-10-20 2001-10-20 Vibration-proof damper

Country Status (2)

Country Link
CN (1) CN1316500C (en)
WO (1) WO2003049116A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08177957A (en) * 1994-12-26 1996-07-12 Yamauchi Corp Vibration proof rubber, vibration proof damper, and vibration proof supporting device
US5703734A (en) * 1994-10-12 1997-12-30 International Business Machines Corporation Disc drive having an integral gasket and continuous outer perimeter shock bumper
KR20000009758A (en) * 1998-07-28 2000-02-15 윤종용 Noise and vibration attenuation device of rotation actuator
JP2001014786A (en) * 1999-06-29 2001-01-19 Tokai Rubber Ind Ltd Vibration proof supporting device for cd player

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2657845B2 (en) * 1990-02-16 1997-09-30 パイオニア株式会社 Damper for vibration isolation
JPH06119770A (en) * 1992-08-18 1994-04-28 Sony Corp Anti-vibration mechanism
JPH10188547A (en) * 1996-12-20 1998-07-21 Sony Corp damper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5703734A (en) * 1994-10-12 1997-12-30 International Business Machines Corporation Disc drive having an integral gasket and continuous outer perimeter shock bumper
JPH08177957A (en) * 1994-12-26 1996-07-12 Yamauchi Corp Vibration proof rubber, vibration proof damper, and vibration proof supporting device
KR20000009758A (en) * 1998-07-28 2000-02-15 윤종용 Noise and vibration attenuation device of rotation actuator
JP2001014786A (en) * 1999-06-29 2001-01-19 Tokai Rubber Ind Ltd Vibration proof supporting device for cd player

Also Published As

Publication number Publication date
CN1316500C (en) 2007-05-16
CN1502107A (en) 2004-06-02

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