WO2002008631A2 - Amortisseur a phototransmission - Google Patents

Amortisseur a phototransmission Download PDF

Info

Publication number
WO2002008631A2
WO2002008631A2 PCT/US2001/023081 US0123081W WO0208631A2 WO 2002008631 A2 WO2002008631 A2 WO 2002008631A2 US 0123081 W US0123081 W US 0123081W WO 0208631 A2 WO0208631 A2 WO 0208631A2
Authority
WO
WIPO (PCT)
Prior art keywords
damper
support members
light transmission
vibration absorbing
absorbing member
Prior art date
Application number
PCT/US2001/023081
Other languages
English (en)
Other versions
WO2002008631A3 (fr
Inventor
Kiyoshi Okuma
Shingo Amari
Original Assignee
3M Innovative Properties Company
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 3M Innovative Properties Company filed Critical 3M Innovative Properties Company
Publication of WO2002008631A2 publication Critical patent/WO2002008631A2/fr
Publication of WO2002008631A3 publication Critical patent/WO2002008631A3/fr

Links

Classifications

    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/40—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers

Definitions

  • the present invention relates to a damper, and in particular to a damper or what is called a “damping unit” for protecting the architecture and structure such as a house, a building, a bridge and a gas tank (hereinafter referred to collectively as “the structure or the like") against the vibrations caused by the strong wind, the earthquake, etc.
  • the Japanese Examined Patent Publication (KOKOKU) No. 51-1932 discloses a damping unit for the structure or the like subjected to subsonic vibrations, characterized in that at least two rigid members having a larger rigidity than a steel plate of 2.5 mm thick are separated by a layer of a visco-elastic material firmly bonded to the surface of the members.
  • the damping unit of this type is normally used as a part of the structural elements suspended over predetermined parts of the structure or the like and configured as shown in Fig. 1, for example.
  • the conventional damping unit 1 is configured with two T-shaped flange members 2a, 2b making up support members and an intermediate member (center plate) 3 arranged in position between them. Layers 4a and 4b of a visco-elastic material are arranged between the flange member 2a and the intermediate member 3 and between the flange member 2b and the intermediate member 3, respectively.
  • the flange members and the intermediate member are configured of a steel plate, and the layers of the visco-elastic material are composed of a copolymer or the like visco-elastic material such as polyether polyurethane or alkyl acrylate and one or more types of acryl monomers such as acrylic acid or acrylamide.
  • the damping unit 1 is used to connect two points of the structure or the like as shown in Fig. 2.
  • the shown example is a case in which the damping unit 1 is installed through bolts between the pole 5 of the external wall of an upper stair of a high- rise building and a truss 7 fastened structurally to the pole 5 substantially at the same level as the floor 6.
  • the layer of the visco-elastic material can be subjected to shear deformation along the thickness thereof when the particular parts are vibrated by an earthquake or a strong wind, and therefore the vibrations can be attenuated to a low level.
  • the support members 2 and the intermediate member 3 are both composed of an opaque steel plate and arranged only at invisible parts such as under the floor of the structure or the like.
  • an additional action such as covering is taken in order not to spoil the appearance.
  • the damping unit may be required to be installed in the neighborhood of the window glass thereby posing the problem that the sunlight or the external field of view is blocked.
  • the conventional damping unit is opaque as a whole, and is not supposed to be installed in the parts requiring light transmission, thereby limiting the places of the installation thereof.
  • a visco-elastic material such as acryl high in light transmission is used as a vibration absorbing member
  • the conventional damping unit is not configured to make the most of the light transmission property.
  • the object of the present invention is to obviate the restraints of the conventional damping unit and provide a light transmission damper that can be installed freely at various parts.
  • a damper comprising a vibration absorbing member held between two opposed support members, wherein the support members are configured with a light transmission material and the vibration absorbing member is configured with a light transmission visco- elastic material or a viscous material thereby to make a light transmission whole damper.
  • Fig. 1 is a perspective view showing a conventional damper.
  • Fig. 2 is a side view showing an application of the conventional damper to the structure or the like.
  • Fig. 3 is a sectional view showing an example of the damper according to the invention.
  • Fig. 4 is a sectional view showing an example of the damper according to the invention.
  • Fig. 5 is a perspective view showing an example of the damper according to the invention.
  • Fig. 6 is a sectional view showing an example of the damper according to the invention.
  • Fig. 7 is a side view showing an application of the damper according to the invention to the structure or the like.
  • Fig. 8 is a side view showing the damper according to the invention used as a partitioning wall.
  • Fig. 9 is a side view showing the damper according to the invention used as a brace.
  • Fig. 10 is a side view showing the damper according to the invention used as a window pane.
  • a damper according to the invention is so configured that a vibration absorbing member is held between two opposed support members, which is a structure similar to the conventional damper (damping unit). Also, the sandwich structure including a single set of two support members and a vibration absorbing member may alternatively be configured with two or more sets.
  • the support members are required to be formed of a light transmission material in order to secure the light transmission of the whole damper. Further, this damper, when installed on the structure or the like, must not adversely affect the strength of the structure or the like and the damper property and therefore is preferably formed of a tough material.
  • a preferable material of the support members is glass, plastic (such as an acryl plate), etc.
  • the light transmission of the support members can be arbitrarily changed in accordance with the parts where the damper is installed or the desired appearance.
  • the support members of various transmittance can be used ranging from transparent glass having a substantially 100 % of transmittance to obscure glass or frosted glass not transparent but light transmission.
  • various shapes and sizes of the support members fitting the shape of the damper can be employed according to whether the damper is parallelepipedic, tabular, hollow cylindrical or solid cylindrical. In the case where the damper is parallelepipedic or tabular, for example, tabular support members can be used. In the case of a solid or hollow cylindrical damper, on the other hand, hollow or annular support members can be used.
  • the vibration absorbing member is composed of a visco-elastic or viscous material exhibiting the effect of attenuating by the elastic deformation the vertical or horizontal vibrations and oscillations applied to the damper due to the wind or the earthquake.
  • This visco-elastic or viscous material is also required to be a light transmission material in order to secure the light transmission of the whole damper.
  • the visco-elastic material is required to have a shearing strain of at least 10 % when measured in the period of one cycle and the loss tangent of at least 3.
  • acrylic materials such as copolymers including acrylic acid or acrylamide, silicon materials such as methyl vinyl silicone, urethane materials such as polyether urethane or polyester urethane, polyvinyl chloride materials, butane materials or butyl materials.
  • the commercially available products such as VEM Type 110, Type 111, Type 112 or Type 113 of Sumitomo 3M can be used as the visco-elastic material.
  • a preferable viscous material has a viscosity of 10 poise or more as measured by the Brookfield rotational viscometer, the rotor No. 7, and specifically includes an acrylic fluid, a silicon fluid, an urethane fluid, a polyvinyl chloride fluid, butane fluid or butyl fluid.
  • Fig. 3 shows a preferred embodiment of the damper according to the invention.
  • This damper 8 is configured with tabular support members 9a, 9b and a vibration absorbing member 10 sandwiched between the tabular members.
  • the vibration absorbing member 10 is formed of a solid visco-elastic material. This visco-elastic material has a stickiness and therefore can produce a sufficient adhesion by contact with the support members. In some cases, however, the vibration absorbing member and the support members can be bonded to each other by use of a transparent adhesive such as polyvinyl, urethane or cyano acrylate. Also, as shown in Fig.
  • a more preferable damper comprises three or more tabular support members 9a, 9b, 9c and each of tabular vibration absorbing members 10a, 10b held between each pair of the tabular support members.
  • the number of the tabular support members is widely variable in accordance with the parts where the damper is used or the desired effects and the upper limit of the number is not specifically defined.
  • Fig. 5 shows a damper according to another embodiment of the invention.
  • the damper 11 comprises two support members including a hollow cylindrical member 12a and a solid cylindrical member 12b, and a cylindrical vibration absorbing member 13 closely held between the support members.
  • the dampers described above use a solid visco-elastic material for the vibration- absorbing member and may alternatively use a fluid viscous material.
  • the vibration absorbing member 15 made of a fluid viscous material is placed in a support member bath 14a, and a tabular support member 14b is inserted into the vibration absorbing member thereby to constitute a damper 16 according to the invention.
  • the damper according to the invention is formed of support members of a light transmission material, and a vibration absorbing member also of a light transmission material.
  • the damper according to the invention can be installed in proximity to the window glass as shown in Fig. 2 without posing any problem unlike in the damper according to the prior art.
  • the damper 18 according to the invention can be installed as a window pane or a glass wall in the space defined by poles 21 and beams 17, by fixing the support member 19 to the floor-side beam 17 and the other support member 20 to the ceiling-side beam 17 with, say, bolts or an adhesive.
  • the damper is used as a partitioning wall, as a brace apart from the window glass and as window glass, and as a window pane incorporated as an interior, respectively.
  • a steel plate is used for the support members of the conventional damper. This often spoils the appearance, and therefore the installation is limited to invisible places such as under the floor.
  • the damper according to the invention in contrast, does not obstruct the view, and the support members thereof can be variously designed with various colors and patterns. Therefore, the appearance is not spoiled and the dampers can be installed at various parts distributively, thereby making it possible to make the most of the residential space.
  • the damper according to the invention is light transmission as a whole, and therefore can be installed at various parts without blocking the light including the sunlight and illumination or obstructing the view.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Vibration Prevention Devices (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention a pour objet un amortisseur de vibrations pouvant être installé en n'importe quel endroit. Un amortisseur comprend deux éléments de support opposés ainsi qu'un élément absorbant les vibrations pris en sandwich entre les éléments de support, les éléments de support étant constitués d'un matériau à phototransmission et l'élément absorbant les vibrations étant constitué d'un matériau viscoélastique ou d'un matériau visqueux à phototransmission, afin de produire ainsi une phototransmission d'amortisseur d'une manière globale.
PCT/US2001/023081 2000-07-24 2001-07-20 Amortisseur a phototransmission WO2002008631A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-227560 2000-07-24
JP2000227560A JP2002054681A (ja) 2000-07-24 2000-07-24 光透過性ダンパー

Publications (2)

Publication Number Publication Date
WO2002008631A2 true WO2002008631A2 (fr) 2002-01-31
WO2002008631A3 WO2002008631A3 (fr) 2003-11-06

Family

ID=18720984

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/023081 WO2002008631A2 (fr) 2000-07-24 2001-07-20 Amortisseur a phototransmission

Country Status (3)

Country Link
JP (1) JP2002054681A (fr)
TW (1) TW514692B (fr)
WO (1) WO2002008631A2 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341130A (en) * 1978-05-22 1982-07-27 Wallace Murray Corporation Dust and oil slinger
DE3304580A1 (de) * 1983-02-10 1984-08-16 Daimler-Benz Ag, 7000 Stuttgart Belastbares schwingungsdaempfendes gummi/metall-bauteil aus einem vernetzten elastomer
EP0694709A1 (fr) * 1994-07-28 1996-01-31 Trw Inc. Structures composite pour l'amortissement et procédé associé
WO1996021560A2 (fr) * 1995-01-13 1996-07-18 Minnesota Mining And Manufacturing Company Articles en couches amortis a conservation amelioree de la force de fixation, procede pour les fabriquer et outils nouveaux servant a leur fabrication
US6021992A (en) * 1997-06-23 2000-02-08 Taichung Machinery Works Co., Ltd. Passive vibration isolating system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655458B2 (ja) * 1989-06-16 1994-07-27 東洋ゴム工業株式会社 防振用支持体の製造方法
JPH04246448A (ja) * 1991-01-31 1992-09-02 Toyoda Gosei Co Ltd 防振ゴム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341130A (en) * 1978-05-22 1982-07-27 Wallace Murray Corporation Dust and oil slinger
DE3304580A1 (de) * 1983-02-10 1984-08-16 Daimler-Benz Ag, 7000 Stuttgart Belastbares schwingungsdaempfendes gummi/metall-bauteil aus einem vernetzten elastomer
EP0694709A1 (fr) * 1994-07-28 1996-01-31 Trw Inc. Structures composite pour l'amortissement et procédé associé
WO1996021560A2 (fr) * 1995-01-13 1996-07-18 Minnesota Mining And Manufacturing Company Articles en couches amortis a conservation amelioree de la force de fixation, procede pour les fabriquer et outils nouveaux servant a leur fabrication
US6021992A (en) * 1997-06-23 2000-02-08 Taichung Machinery Works Co., Ltd. Passive vibration isolating system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Week 199110 Derwent Publications Ltd., London, GB; Class A35, AN 1991-070308 XP002189011 A: -& JP 03 019835 A (TOYO RUBBER IND CO LTD) , 29 January 1991 (1991-01-29) *
DATABASE WPI Section Ch, Week 199242 Derwent Publications Ltd., London, GB; Class A18, AN 1992-343510 XP002189012 -& JP 04 246448 A (TOYODA GOSEI KK), 2 September 1992 (1992-09-02) *

Also Published As

Publication number Publication date
WO2002008631A3 (fr) 2003-11-06
JP2002054681A (ja) 2002-02-20
TW514692B (en) 2002-12-21

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