JP2007285320A

JP2007285320A - Dynamic damper

Info

Publication number: JP2007285320A
Application number: JP2006109966A
Authority: JP
Inventors: Kazuya Hirota; 和也廣田
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2006-04-12
Filing date: 2006-04-12
Publication date: 2007-11-01

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dynamic damper capable of absorbing and attenuating the vibration and impact acting on a board placed with an object to be damped, even if its structure is very simple. <P>SOLUTION: First, a first through-hole 17 is formed in the board 10 on which the object to be damped is placed, and second through-holes 18a, 18b are formed in respective tubular members 12a, 12b each having a bottom plate and peripheral walls vertically extending from the periphery of the bottom plate. The tubular members 12a, 12b are so disposed that their bottom plates face the board 10 with the first through hole 17 aligned with the second through holes 18a, 18b. A movable column 11 is inserted into the second through-holes 18a, 18b. Spring members 13a, 13b are fitted into the column from the opening sides of the tubular members 12a, 12b, respectively. Weight members 14a, 14b are disposed at one ends of the spring members 13a, 13b, respectively. The positions of the weight members 14a, 14b on the column 11 are fixed by fasteners 15a, 15b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、吸振対象が載置される基板に作用する振動及び衝撃を吸収して減衰させる動吸振器に関する。 The present invention relates to a dynamic vibration absorber that absorbs and attenuates vibrations and shocks acting on a substrate on which a vibration absorption target is placed.

大多数の電気機器には電子回路がプリント基板に搭載されている。通常、プリント基板をゴム緩衝体で支持することにより、プリント基板に作用する振動及び衝撃をゴム緩衝体の弾性力によって吸収する。近年、ＬＣＤ、ＰＤＰ、有機／無機ＥＬ、ＳＥＤなど様々な薄型の表示装置が実用化されている。これらの表示装置は、従来のＣＲＴと比較して画面サイズを大きくすることが容易である。それに伴い、従来のようなゴム緩衝体では、十分な振動及び衝撃の吸収ができない。 In most electrical devices, an electronic circuit is mounted on a printed circuit board. Usually, by supporting the printed board with a rubber buffer, vibrations and impacts acting on the printed board are absorbed by the elastic force of the rubber buffer. In recent years, various thin display devices such as LCD, PDP, organic / inorganic EL, and SED have been put into practical use. These display devices can easily increase the screen size as compared with the conventional CRT. Accordingly, a conventional rubber buffer cannot absorb sufficient vibration and impact.

ところで、高層ビル及びタワーの振動制御には、構造物に共振質量となる錘を設け、錘を振動させることにより構造物本体の振動を減衰させる動吸振器が用いられる。特許文献１には、共通の支持部材から複数のバネ部材を延出し、これらバネ部材の先端にそれぞれ錘を取り付けて、これら錘を揺動自在に片持ち支持すると共に、これら錘の揺動を減衰するための減衰部材を取り付けた動吸振器が開示されている。
特開平９−１１９４７７号公報 By the way, for vibration control of high-rise buildings and towers, a dynamic vibration absorber is used in which a weight serving as a resonance mass is provided in the structure, and the weight of the structure body is attenuated by vibrating the weight. In Patent Document 1, a plurality of spring members are extended from a common support member, weights are respectively attached to the tips of the spring members, the weights are cantilevered, and the weights are swung. A dynamic vibration absorber having a damping member for damping is disclosed.
JP-A-9-119477

しかしながら、特許文献１に開示された動吸振器においては、ボルト及び接着剤などによって支持部材を吸振対象に固定する必要があり、また、あくまで高層ビル及びタワーのような構造物の振動制御を目的とするものであり、薄型の表示装置などの各種の電気機器に動吸振器が搭載された実用例はない。したがって、高層ビル及びタワーのような構造物と比べて小型の電気機器を吸振対象とし、簡単な構成で、かつコストをかけることなく、吸振対象に作用する振動及び衝撃を吸収して減衰させることができる動吸振器が要望されていた。 However, in the dynamic vibration absorber disclosed in Patent Document 1, it is necessary to fix the support member to a vibration absorption target with a bolt and an adhesive, and for the purpose of vibration control of structures such as high-rise buildings and towers. There is no practical example in which a dynamic vibration absorber is mounted on various electric devices such as a thin display device. Therefore, it is intended to absorb vibrations and shocks acting on the vibration absorption target with a simple configuration and without cost, compared to structures such as high-rise buildings and towers, and to absorb vibration and impact. There has been a demand for a dynamic vibration absorber that can be used.

本発明は斯かる事情に鑑みてなされたものであり、電気機器に好適であって、極めて簡単な構成であっても、吸振対象が載置される基板に作用する振動及び衝撃を吸収して減衰させることができる動吸振器の提供を目的とする。 The present invention has been made in view of such circumstances, and is suitable for an electric device and absorbs vibrations and shocks acting on a substrate on which a vibration absorption target is placed even if it has a very simple configuration. An object is to provide a dynamic vibration absorber that can be damped.

本発明に係る動吸振器は、貫通孔を有し、吸振対象が載置される基板と、前記貫通孔に挿入された移動可能な支柱と、前記基板の両面側それぞれから前記支柱に嵌入された２つのバネ部材と、各バネ部材の一端側に配置された錘部材と、該錘部材の前記支柱に対する位置を固定するための固定部材とを備え、各バネ部材は、一端が各錘部材を押圧するとともに、他端が前記基板を押圧していることを特徴とする。 The dynamic vibration absorber according to the present invention has a through-hole, and a substrate on which a vibration absorption target is placed, a movable support inserted into the through-hole, and a support from each side of the substrate are inserted into the support. Two spring members, a weight member disposed on one end side of each spring member, and a fixing member for fixing the position of the weight member with respect to the column, each spring member having one end on each weight member And the other end presses the substrate.

本発明にあっては、吸振対象が載置された基板に貫通孔を設ける。貫通孔に移動可能な支柱を挿入し、基板の両面側それぞれからバネ部材を支柱に嵌入する。各バネ部材の一端側には錘部材を配置し、錘部材の支柱に対する位置を固定部材によって固定する。これにより、各バネ部材は、一端が各錘部材を押圧するとともに、他端が基板を押圧する。基板に振動が加えられた場合、その振動のエネルギー（振動エネルギー）の一部が錘部材の振動エネルギーに転換され、基板自体に加えられる振動を減衰させることができる。したがって、基板に載置された吸振対象に伝わる振動及び衝撃を吸収して減衰させることができる。 In the present invention, the through hole is provided in the substrate on which the vibration absorption target is placed. A movable support column is inserted into the through hole, and spring members are inserted into the support column from both sides of the substrate. A weight member is disposed on one end side of each spring member, and the position of the weight member with respect to the support is fixed by a fixing member. Thereby, as for each spring member, while one end presses each weight member, the other end presses a substrate. When vibration is applied to the substrate, part of the vibration energy (vibration energy) is converted into vibration energy of the weight member, and the vibration applied to the substrate itself can be attenuated. Therefore, it is possible to absorb and attenuate the vibration and impact transmitted to the vibration absorption object placed on the substrate.

本発明に係る動吸振器は、前記バネ部材、錘部材及び固定部材を覆う筒状部材をさらに備えることを特徴とする。 The dynamic vibration absorber according to the present invention further includes a cylindrical member that covers the spring member, the weight member, and the fixing member.

本発明にあっては、バネ部材、錘部材及び固定部材を覆う筒状部材をさらに備えることにより、外部からのダストなどの侵入を防止したり、人間などが動吸振器に接触することを防止することができる。 In the present invention, by further including a cylindrical member that covers the spring member, the weight member, and the fixing member, it is possible to prevent the entry of dust and the like from the outside, and to prevent humans from coming into contact with the dynamic vibration absorber. can do.

本発明に係る動吸振器は、第１貫通孔を有し、吸振対象が載置される基板と、第２貫通孔が設けられた底板及び該底板の周囲から立設された周壁を有し、前記第２貫通孔と前記第１貫通孔とが重なった状態で前記底板が前記基板と対向するように配置された２つの筒状部材と、各筒状部材の底板に設けた第２貫通孔に挿入された移動可能な支柱と、前記筒状部材の開口側のそれぞれから前記支柱に嵌入された２つのバネ部材と、各バネ部材の一端側に配置された錘部材と、該錘部材の前記支柱に対する位置を固定するための固定部材とを備え、各バネ部材は、一端が各錘部材を押圧するとともに、他端が各筒状部材の底板を押圧していることを特徴とする。 A dynamic vibration absorber according to the present invention includes a first through hole, a substrate on which a vibration absorption target is placed, a bottom plate provided with a second through hole, and a peripheral wall erected from the periphery of the bottom plate. Two cylindrical members arranged so that the bottom plate faces the substrate in a state where the second through hole and the first through hole overlap each other, and a second through hole provided in the bottom plate of each cylindrical member A movable column inserted into the hole, two spring members fitted into the column from each of the opening sides of the cylindrical member, a weight member disposed on one end side of each spring member, and the weight member A fixing member for fixing the position of the cylindrical member with respect to the column, and each spring member has one end pressing each weight member and the other end pressing the bottom plate of each cylindrical member. .

本発明にあっては、吸振対象が載置された基板に第１貫通孔を設ける。また、底板及び該底板の周囲から立設された周壁を有する２つの筒状部材に第２貫通孔を設ける。そして、第２貫通孔と第１貫通孔とが重なった状態で各筒状部材の底板が基板と対向するように配置する。そして、第２貫通孔に移動可能な支柱を挿入し、各筒状部材の開口側のそれぞれからバネ部材を支柱に嵌入する。各バネ部材の一端側には錘部材を配置し、錘部材の支柱に対する位置を固定部材によって固定する。これにより、各バネ部材は、一端が各錘部材を押圧するとともに、他端が各筒状部材の底板を押圧する。基板に振動が加えられた場合、その振動のエネルギー（振動エネルギー）の一部が錘部材の振動エネルギーに転換され、基板自体に加えられる振動を減衰させることができる。したがって、基板に載置された吸振対象に伝わる振動及び衝撃を吸収して減衰させることができる。また、筒状部材を設けることで、外部からのダストなどの侵入を防止したり、人間などが動吸振器に接触することを防止することができる。なお、筒状部材に設ける第２貫通孔の孔径を支柱の外径に合わせばよく、基板に設ける第１貫通孔は、支柱の外径より大きければ問題ない。 In the present invention, the first through hole is provided in the substrate on which the vibration absorption target is placed. Moreover, a 2nd through-hole is provided in two cylindrical members which have the surrounding wall standingly arranged from the circumference | surroundings of the baseplate and this baseplate. And it arrange | positions so that the baseplate of each cylindrical member may oppose a board | substrate in the state with which the 2nd through-hole and the 1st through-hole overlapped. And the movable support | pillar is inserted in a 2nd through-hole, and the spring member is inserted in a support | pillar from each of the opening side of each cylindrical member. A weight member is disposed on one end side of each spring member, and the position of the weight member with respect to the support is fixed by a fixing member. Thereby, as for each spring member, while one end presses each weight member, the other end presses the bottom plate of each cylindrical member. When vibration is applied to the substrate, part of the vibration energy (vibration energy) is converted into vibration energy of the weight member, and the vibration applied to the substrate itself can be attenuated. Therefore, it is possible to absorb and attenuate the vibration and impact transmitted to the vibration absorption object placed on the substrate. Further, by providing the cylindrical member, it is possible to prevent the entry of dust and the like from the outside, and it is possible to prevent humans from coming into contact with the dynamic vibration absorber. Note that the hole diameter of the second through hole provided in the cylindrical member may be matched with the outer diameter of the column, and there is no problem if the first through hole provided in the substrate is larger than the outer diameter of the column.

本発明に係る動吸振器は、前記支柱に螺子溝が形成されており、該螺子溝と螺嵌する溝を有する穴が前記固定部材に形成されていることを特徴とする。 The dynamic vibration absorber according to the present invention is characterized in that a screw groove is formed in the support column, and a hole having a groove to be screwed into the screw groove is formed in the fixing member.

本発明にあっては、支柱に螺子溝を形成し、その螺子溝と螺嵌する溝を有する穴を固定部材に形成することにより、螺子止めによって錘部材の支柱に対する位置を容易に固定することができる。 In the present invention, the position of the weight member with respect to the column can be easily fixed by screwing by forming a screw groove in the column and forming a hole having a groove to be screwed into the screw groove in the fixing member. Can do.

本発明によれば、吸振対象が載置された基板に貫通孔を設け、貫通孔に移動可能な支柱を挿入し、基板の両面側それぞれからバネ部材を支柱に嵌入し、各バネ部材の一端側に錘部材を配置し、錘部材の支柱に対する位置を固定部材によって固定することにより、各バネ部材の一端が各錘部材を押圧するとともに、各バネ部材の他端が基板を押圧する構成としたので、基板に振動が加えられた場合、その振動のエネルギー（振動エネルギー）の一部が錘部材の振動エネルギーに転換され、基板自体に加えられる振動を減衰させることができる。したがって、基板に載置された吸振対象に伝わる振動及び衝撃を吸収して減衰させることができる。 According to the present invention, a through hole is provided in a substrate on which a vibration absorption target is placed, a movable column is inserted into the through hole, spring members are fitted into the column from both sides of the substrate, and one end of each spring member is inserted. The weight member is arranged on the side, and the position of the weight member with respect to the column is fixed by the fixing member, whereby one end of each spring member presses each weight member and the other end of each spring member presses the substrate; Therefore, when vibration is applied to the substrate, a part of the vibration energy (vibration energy) is converted to the vibration energy of the weight member, and the vibration applied to the substrate itself can be attenuated. Therefore, it is possible to absorb and attenuate the vibration and impact transmitted to the vibration absorption object placed on the substrate.

本発明によれば、バネ部材、錘部材及び固定部材を覆う筒状部材をさらに備える構成としたので、外部からのダストなどの侵入を防止したり、人間などが動吸振器に接触することを防止することができる。 According to the present invention, since the cylindrical member covering the spring member, the weight member, and the fixing member is further provided, it is possible to prevent intrusion of dust or the like from the outside, or that a human or the like contacts the dynamic vibration absorber. Can be prevented.

本発明によれば、吸振対象が載置された基板に第１貫通孔を設け、底板及び該底板の周囲から立設された周壁を有する２つの筒状部材に第２貫通孔を設け、第２貫通孔と第１貫通孔とが重なった状態で各筒状部材の底板が基板と対向するように配置し、第２貫通孔には移動可能な支柱を挿入し、各筒状部材の開口側のそれぞれからバネ部材を支柱に嵌入し、各バネ部材の一端側には錘部材を配置し、錘部材の支柱に対する位置を固定部材によって固定することにより、各バネ部材の一端が各錘部材を押圧するとともに、各バネ部材の他端が各筒状部材の底板を押圧する構成としたので、基板に振動が加えられた場合、その振動のエネルギー（振動エネルギー）の一部が錘部材の振動エネルギーに転換され、基板自体に加えられる振動を減衰させることができる。したがって、基板に載置された吸振対象に伝わる振動及び衝撃を吸収して減衰させることができる。また、筒状部材を設けることで、外部からのダストなどの侵入を防止したり、人間などが動吸振器に接触することを防止することができる。 According to the present invention, the first through hole is provided in the substrate on which the vibration absorption target is placed, the second through hole is provided in the two cylindrical members having the bottom plate and the peripheral wall erected from the periphery of the bottom plate, 2 The through holes and the first through holes are overlapped with each other so that the bottom plate of each cylindrical member faces the substrate. A spring member is fitted into the support column from each of the sides, a weight member is disposed on one end side of each spring member, and the position of the weight member with respect to the support column is fixed by a fixing member, whereby one end of each spring member is connected to each weight member And the other end of each spring member presses the bottom plate of each cylindrical member. Therefore, when vibration is applied to the substrate, a part of the vibration energy (vibration energy) is part of the weight member. It is converted into vibration energy, and the vibration applied to the substrate itself is damped. Rukoto can. Therefore, it is possible to absorb and attenuate the vibration and impact transmitted to the vibration absorption target placed on the substrate. Further, by providing the cylindrical member, it is possible to prevent intrusion of dust and the like from the outside, and to prevent humans from coming into contact with the dynamic vibration absorber.

本発明によれば、支柱に螺子溝を形成し、その螺子溝と螺嵌する溝を有する穴を固定部材に形成することにより、螺子止めによって錘部材の支柱に対する位置を容易に固定することができる等、優れた効果を奏する。 According to the present invention, the position of the weight member with respect to the column can be easily fixed by screwing by forming a screw groove in the column and forming a hole having a groove to be screwed into the screw groove in the fixing member. It has excellent effects such as being able to.

以下、本発明をその実施の形態を示す図面に基づいて詳述する。 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.

（実施の形態１）
図１は本発明の実施の形態１に係る動吸振器の外観を示す斜視図、図２は本発明の実施の形態１に係る動吸振器の内部構成を示す側断面図、図３は本発明の実施の形態１に係る動吸振器の分解斜視図である。
本発明の実施の形態１に係る動吸振器１は、吸振対象Ｓが載置される基板１０、支柱１１、筒状部材１２ａ，１２ｂ、バネ部材１３ａ，１３ｂ、錘部材１４ａ，１４ｂ、及び留め具１５ａ，１５ｂを備えている。 (Embodiment 1)
1 is a perspective view showing an external appearance of a dynamic vibration absorber according to a first embodiment of the present invention, FIG. 2 is a side sectional view showing an internal configuration of the dynamic vibration absorber according to the first embodiment of the present invention, and FIG. It is a disassembled perspective view of the dynamic vibration damper which concerns on Embodiment 1 of invention.
The dynamic vibration absorber 1 according to the first embodiment of the present invention includes a substrate 10 on which a vibration absorption target S is placed, a column 11, cylindrical members 12a and 12b, spring members 13a and 13b, weight members 14a and 14b, and a clamp. Tools 15a and 15b are provided.

基板１０の略中心には支柱１１を嵌入させるための第１貫通孔１７が設けられている。この第１貫通孔１７が基板に作用する振動及び衝撃を吸収する位置となるため、振動振幅が最大となる位置に第１貫通孔１７を設けることが好ましく、基板１０の大きさ、形状及び吸振対象Ｓの載置位置に応じて適宜決定する。なお、定常波の場合、基板１０の周縁が振動の節となると考えられるので、基板１０の中心が１次定常波の腹となり、この位置に第１貫通孔１７を設ける。もちろん、高次の定常波を吸振する場合には、各定常波の腹の位置に応じて第１貫通孔１７の位置を決定する。 A first through-hole 17 for fitting the column 11 is provided at the approximate center of the substrate 10. Since the first through hole 17 is a position that absorbs vibrations and impacts acting on the substrate, it is preferable to provide the first through hole 17 at a position where the vibration amplitude is maximized. It determines suitably according to the mounting position of the object S. In the case of a standing wave, the peripheral edge of the substrate 10 is considered to be a node of vibration, so the center of the substrate 10 is an antinode of the standing wave, and the first through hole 17 is provided at this position. Of course, when a high-order standing wave is absorbed, the position of the first through-hole 17 is determined according to the antinode position of each standing wave.

筒状部材１２ａ，１２ｂは、底板及び底板の周囲から立設された周壁を有し、それぞれの底板には第２貫通孔１８ａ，１８ｂが設けられている。筒状部材１２ａ、基板１０及び筒状部材１２ｂは、この順序で第２貫通孔１８ａ、第１貫通孔１７及び第２貫通孔１８ｂが重なった状態で、それぞれの底板が基板１０と対向するように配置される。 The cylindrical members 12a and 12b have a bottom plate and a peripheral wall erected from the periphery of the bottom plate, and second through holes 18a and 18b are provided in the respective bottom plates. The cylindrical member 12a, the substrate 10 and the cylindrical member 12b are arranged such that their bottom plates face the substrate 10 with the second through hole 18a, the first through hole 17 and the second through hole 18b overlapping in this order. Placed in.

支柱１１は、筒状部材１２ａ，１２ｂの底板に設けた第２貫通孔１８ａ，１８ｂに挿入されており、第２貫通孔１８ａ，１８ｂの孔軸方向に可動する。なお、支柱１１は、基板１０に設けた第１貫通孔１７にも挿入されることは言うまでもない。なお、筒状部材１２ａ，１２ｂに設けた第２貫通孔１８ａ，１８ｂの孔径を支柱１１の外径に合わせばよく、基板１０に設けた第１貫通孔１７は、支柱１１の外径より大きければよいが、本例では、第１貫通孔１７及び第２貫通孔１８ａ，１８ｂの孔径を同一とした。 The support column 11 is inserted into second through holes 18a and 18b provided in the bottom plates of the cylindrical members 12a and 12b, and is movable in the axial direction of the second through holes 18a and 18b. Needless to say, the column 11 is also inserted into the first through hole 17 provided in the substrate 10. The diameter of the second through holes 18a and 18b provided in the cylindrical members 12a and 12b may be adjusted to the outer diameter of the support column 11, and the first through hole 17 provided in the substrate 10 is larger than the outer diameter of the support column 11. In this example, the first through hole 17 and the second through holes 18a and 18b have the same diameter.

バネ部材１３ａ，１３ｂは、筒状部材１２ａ，１２ｂの開口側のそれぞれから支柱１１に嵌入されており、各バネ部材１３ａ，１３ｂの一端側には、錘部材１４ａ，１４ｂが配置されている。留め具１５ａ，１５ｂは、錘部材１４ａ，１４ｂの支柱１１に対する位置を固定するための固定部材である。例えば、支柱１１の両端に螺子溝１１ａを形成し、その螺子溝１１ａに螺嵌する溝を有する穴を留め具１５ａ，１５ｂに形成し、螺子止めによって錘部材１４ａ，１４ｂの支柱１１に対する位置を容易に固定することができる。 The spring members 13a and 13b are fitted into the support column 11 from the opening sides of the cylindrical members 12a and 12b, and weight members 14a and 14b are disposed on one end side of the spring members 13a and 13b. The fasteners 15a and 15b are fixing members for fixing the positions of the weight members 14a and 14b with respect to the column 11. For example, screw grooves 11a are formed at both ends of the support pillar 11, holes having grooves to be screwed into the screw grooves 11a are formed in the fasteners 15a and 15b, and the positions of the weight members 14a and 14b with respect to the support pillar 11 by screwing. Can be easily fixed.

上述のような構成によって、各バネ部材１３ａ，１３ｂは、一端が各錘部材１４ａ，１４ｂを押圧するとともに、他端が各筒状部材１２ａ，１２ｂの底板を押圧する。バネ部材１３ａ，１３ｂが同一の材料からなる場合、バネ部材１３ａ，１３ｂの平衡状態において、基板１０はバネ部材１３ａ，１３ｂの長さが略同一の位置に配置される。なお、支柱１１が鉛直方向となるように動吸振器１を配置した場合、吸振対象Ｓを載置した基板１０に作用する重力は、下側のバネ部材１３ｂのみに加わることから、平衡状態において、基板１０はバネ部材１３ｂの長さがバネ部材１３ａよりも短い位置に配置される。 With the configuration described above, each spring member 13a, 13b has one end pressing each weight member 14a, 14b and the other end pressing the bottom plate of each cylindrical member 12a, 12b. When the spring members 13a and 13b are made of the same material, the substrate 10 is disposed at a position where the lengths of the spring members 13a and 13b are substantially the same in the equilibrium state of the spring members 13a and 13b. In addition, when the dynamic vibration absorber 1 is arranged so that the column 11 is in the vertical direction, gravity acting on the substrate 10 on which the vibration absorption target S is placed is applied only to the lower spring member 13b. The substrate 10 is disposed at a position where the length of the spring member 13b is shorter than that of the spring member 13a.

図４は本発明の実施の形態１に係る動吸振器の動作を説明するための説明図であり、時間の経過によって、同図（ａ）→（ｂ）→（ｃ）→（ｄ）→（ｅ）のように状態が変化する。 FIG. 4 is an explanatory diagram for explaining the operation of the dynamic vibration absorber according to the first embodiment of the present invention. FIG. 4 (a) → (b) → (c) → (d) → The state changes as in (e).

まず、図４（ａ）のようなバネ部材１３ａ，１３ｂの平衡状態において振動が加えられた場合（ここでは下方向の衝撃とする）、その振動によって基板１０が下方向に移動する（図４（ｂ））。 First, when vibration is applied in the equilibrium state of the spring members 13a and 13b as shown in FIG. 4A (here, a downward impact is assumed), the substrate 10 moves downward due to the vibration (FIG. 4). (B)).

基板１０が下方向に移動した場合、下側に設けられたバネ部材１３ｂが収縮し、上側に設けられたバネ部材１３ａが伸張する。これにより、バネ部材１３ａ，１３ｂの平衡状態は崩れ、バネ部材１３ｂは伸張しようとし、バネ部材１３ａは収縮しようとする。つまり上方向の付勢力が生じる。この上方向の付勢力によって基板１０は上方向に移動する（図４（ｃ））。 When the substrate 10 moves downward, the spring member 13b provided on the lower side contracts, and the spring member 13a provided on the upper side expands. As a result, the equilibrium state of the spring members 13a and 13b collapses, the spring member 13b tends to expand, and the spring member 13a tends to contract. That is, an upward biasing force is generated. The substrate 10 moves upward by the upward biasing force (FIG. 4C).

この上方向の付勢力による基板１０の上方向への移動は、バネ部材１３ａ，１３ｂの平衡状態の位置を越え、上側に設けられたバネ部材１３ａを収縮させ、下側に設けられたバネ部材１３ｂを伸張させる。これにより、バネ部材１３ａ，１３ｂの平衡状態が再び崩れ、今度はバネ部材１３ａは伸張しようとし、バネ部材１３ｂは収縮しようとする。つまり下方向の付勢力が生じる。（図４（ｄ））。 The upward movement of the substrate 10 by the upward biasing force exceeds the equilibrium state of the spring members 13a and 13b, contracts the spring member 13a provided on the upper side, and provides the spring member provided on the lower side. 13b is stretched. As a result, the equilibrium state of the spring members 13a and 13b collapses again, and this time the spring member 13a tries to expand and the spring member 13b tends to contract. That is, a downward biasing force is generated. (FIG. 4 (d)).

この下方向の付勢力によって基板１０は下方向に移動する（図４（ｅ））。そして、上側のバネ部材１３ａと下側のバネ部材１３ｂとが平衡状態になるまで上述した動作を繰り返す。 The substrate 10 moves downward by this downward biasing force (FIG. 4E). The above-described operation is repeated until the upper spring member 13a and the lower spring member 13b are in an equilibrium state.

上述したように、基板１０に振動が加えられた場合、その振動のエネルギー（振動エネルギー）の一部が動吸振器の錘部材１４ａ，１４ｂの振動エネルギーに転換されることから、基板１０自体に加えられる振動を減衰させることができる。つまり、基板１０に載置された吸振対象Ｓに伝わる振動及び衝撃を吸収して減衰させることができる。 As described above, when vibration is applied to the substrate 10, part of the vibration energy (vibration energy) is converted into vibration energy of the weight members 14 a and 14 b of the dynamic vibration absorber. The applied vibration can be damped. That is, it is possible to absorb and attenuate the vibration and impact transmitted to the vibration absorption target S placed on the substrate 10.

また、支柱１１が基板１０に未固定であることから、基板１０に大きな力が作用することはなく、基板１０の損傷を抑制することができる。このように、本発明では、動吸振器１によって力を吸収して、基板１０に加わる振動を抑制することができる。 Moreover, since the support | pillar 11 is not fixed to the board | substrate 10, a big force does not act on the board | substrate 10, and damage to the board | substrate 10 can be suppressed. As described above, in the present invention, the dynamic vibration absorber 1 can absorb the force and suppress the vibration applied to the substrate 10.

さらに、基板１０に第１貫通孔１７を設ければ、その第１貫通孔１７に支柱を挿入して動吸振器とすることができ、その構成が極めて簡単である。また、錘部材１４ａ，１４ｂ及びバネ部材１３ａ，１３ｂを基板１０の上下それぞれに配置することにより、１つの場合と比べて２倍の重量とばね係数とを得ることができる。 Furthermore, if the first through hole 17 is provided in the substrate 10, a strut can be inserted into the first through hole 17 to form a dynamic vibration absorber, and the configuration is extremely simple. Further, by disposing the weight members 14a and 14b and the spring members 13a and 13b on the upper and lower sides of the substrate 10, respectively, a weight twice as large as that of one case and a spring coefficient can be obtained.

（実施の形態２）
実施の形態１では、筒状部材１２ａ，１２ｂによって基板１０を挟持し、バネ部材１３ａ，１３ｂが筒状部材１２ａ，１２ｂの底板を押圧するような形態について説明したが、バネ部材１３ａ，１３ｂが直接的に基板１０を押圧するようにしてもよく、このようにしたものが実施の形態２である。図５は本発明の実施の形態２に係る動吸振器の内部構成を示す側断面図である。
本発明の実施の形態２に係る動吸振器２は、吸振対象が載置される基板２０、支柱２１、バネ部材２３ａ，２３ｂ、錘部材２４ａ，２４ｂ、及び留め具２５ａ，２５ｂを備えている。 (Embodiment 2)
In the first embodiment, the substrate 10 is sandwiched between the cylindrical members 12a and 12b and the spring members 13a and 13b press the bottom plates of the cylindrical members 12a and 12b. However, the spring members 13a and 13b The substrate 10 may be pressed directly, and this is the second embodiment. FIG. 5 is a side sectional view showing the internal configuration of the dynamic vibration absorber according to Embodiment 2 of the present invention.
The dynamic vibration absorber 2 according to the second embodiment of the present invention includes a substrate 20 on which a vibration absorption target is placed, a support column 21, spring members 23a and 23b, weight members 24a and 24b, and fasteners 25a and 25b. .

基板２０の略中心には貫通孔２７が設けられ、支柱２１が貫通孔２７に挿入されている。バネ部材２３ａ，２３ｂは、基板２０の両面側のそれぞれから支柱２１に嵌入されており、各バネ部材２３ａ，２３ｂの一端側には、錘部材２４ａ，２４ｂが配置されている。留め具２５ａ，２５ｂは、錘部材２４ａ，２４ｂの支柱２１に対する位置を固定するための固定部材である。 A through hole 27 is provided in the approximate center of the substrate 20, and the support column 21 is inserted into the through hole 27. The spring members 23a and 23b are fitted into the support columns 21 from both sides of the substrate 20, and weight members 24a and 24b are disposed on one end sides of the spring members 23a and 23b. The fasteners 25a and 25b are fixing members for fixing the positions of the weight members 24a and 24b with respect to the column 21.

上述のような構成によって、各バネ部材２３ａ，２３ｂは、一端が各錘部材２４ａ，２４ｂを押圧するとともに、他端が基板２０を押圧する。したがって、実施の形態１と同様、基板２０に振動が加えられた場合、その振動のエネルギー（振動エネルギー）の一部を動吸振器２の錘部材２４ａ，２４ｂの振動エネルギーに転換され、基板２０自体に加えられる振動を減衰させることができる。つまり、基板２０に載置された吸振対象に伝わる振動及び衝撃を吸収して減衰させることができる。 With the configuration as described above, one end of each spring member 23a, 23b presses each weight member 24a, 24b, and the other end presses the substrate 20. Therefore, as in the first embodiment, when vibration is applied to the substrate 20, part of the vibration energy (vibration energy) is converted into vibration energy of the weight members 24 a and 24 b of the dynamic vibration absorber 2, and the substrate 20 The vibration applied to itself can be attenuated. That is, it is possible to absorb and attenuate vibrations and impacts transmitted to the vibration absorption object placed on the substrate 20.

実施の形態２においては、実施の形態１と比較して筒状部材１２ａ，１２ｂが不要であることから、さらに構成が簡単である。一方、実施の形態２では基板２０に設けた貫通孔２７の孔軸方向に沿って支柱２１が可動することから、貫通孔２７の孔径を支柱２１の外径に合わせる必要があるが、実施の形態１では、筒状部材１２ａ，１２ｂに設けた第２貫通孔１８ａ，１８ｂの孔径を支柱１１の外径に合わせばよく、基板１０に設けた第１貫通孔１７は、支柱１１の外径より大きければ問題ない。 In the second embodiment, since the cylindrical members 12a and 12b are not required as compared with the first embodiment, the configuration is further simplified. On the other hand, in the second embodiment, since the column 21 is movable along the direction of the hole axis of the through hole 27 provided in the substrate 20, it is necessary to adjust the diameter of the through hole 27 to the outer diameter of the column 21. In the first embodiment, the hole diameters of the second through holes 18a and 18b provided in the cylindrical members 12a and 12b may be matched with the outer diameter of the support column 11, and the first through holes 17 provided in the substrate 10 may be the outer diameter of the support column 11. If it is larger, there is no problem.

実施の形態２においては、バネ部材２３ａ，２３ｂによる圧力が基板に直接加わることから、基板の厚みが薄い場合には実施の形態１に示したような筒状部材を用いてバネ部材による基板への圧力を分散させることが好ましい。一方、基板の厚みが厚い場合には実施の形態２に示したように筒状部材を用いる必要はなく、基板の厚みに応じて使い分けることが好ましい。また、筒状部材は、バネ部材、錘部材及び固定部材を覆って、外部からのダストなどの侵入を防止したり、人間などが動吸振器に接触することを防止する効果があるため、塵埃環境下や基板が剥き出しになっている場合には、筒状部材を設けることが好ましい。もちろん、実施の形態２において、バネ部材、錘部材及び固定部材を覆うような筒状部材を設けて、上述した効果を奏するようにしてもよい。 In the second embodiment, since the pressure by the spring members 23a and 23b is directly applied to the substrate, when the substrate is thin, the cylindrical member as shown in the first embodiment is used to move the substrate to the spring member. It is preferable to disperse the pressure. On the other hand, when the thickness of the substrate is thick, it is not necessary to use the cylindrical member as shown in the second embodiment, and it is preferable to use them according to the thickness of the substrate. In addition, the cylindrical member covers the spring member, the weight member, and the fixing member, and has an effect of preventing intrusion of dust and the like from the outside and preventing humans from coming into contact with the dynamic vibration absorber. In the environment or when the substrate is exposed, it is preferable to provide a cylindrical member. Of course, in Embodiment 2, a cylindrical member that covers the spring member, the weight member, and the fixing member may be provided to achieve the above-described effects.

本発明の実施の形態１に係る動吸振器の外観を示す斜視図である。It is a perspective view which shows the external appearance of the dynamic vibration damper which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る動吸振器の内部構成を示す側断面図である。It is a sectional side view which shows the internal structure of the dynamic vibration damper which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る動吸振器の分解斜視図である。It is a disassembled perspective view of the dynamic vibration absorber which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る動吸振器の動作を説明するための説明図である。It is explanatory drawing for demonstrating operation | movement of the dynamic vibration damper which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る動吸振器の内部構成を示す側断面図である。It is a sectional side view which shows the internal structure of the dynamic vibration damper which concerns on Embodiment 2 of this invention.

符号の説明Explanation of symbols

１，２動吸振器
１０，２０基板
１１，２１支柱
１１ａ螺子溝
１２ａ，１２ｂ筒状部材
１３ａ，１３ｂ，２３ａ，２３ｂバネ部材
１４ａ，１４ｂ，２４ａ，２４ｂ錘部材
１５ａ，１５ｂ，２５ａ，２５ｂ留め具
１７第１貫通孔
２７貫通孔
１８ａ，１８ｂ第２貫通孔
Ｓ吸振対象 1, 2 Dynamic vibration absorbers 10, 20 Substrate 11, 21 Post 11a Screw groove 12a, 12b Tubular members 13a, 13b, 23a, 23b Spring members 14a, 14b, 24a, 24b Weight members 15a, 15b, 25a, 25b 17 1st through-hole 27 Through-hole 18a, 18b 2nd through-hole S Suction object

Claims

貫通孔を有し、吸振対象が載置される基板と、
前記貫通孔に挿入された移動可能な支柱と、
前記基板の両面側それぞれから前記支柱に嵌入された２つのバネ部材と、
各バネ部材の一端側に配置された錘部材と、
該錘部材の前記支柱に対する位置を固定するための固定部材と
を備え、
各バネ部材は、一端が各錘部材を押圧するとともに、他端が前記基板を押圧していること
を特徴とする動吸振器。 A substrate having a through hole on which a vibration absorption target is placed;
A movable column inserted into the through hole;
Two spring members fitted into the column from both sides of the substrate;
A weight member disposed on one end side of each spring member;
A fixing member for fixing the position of the weight member with respect to the column,
Each spring member has one end pressing each weight member and the other end pressing the substrate.

前記バネ部材、錘部材及び固定部材を覆う筒状部材をさらに備えること
を特徴とする請求項１に記載の動吸振器。 The dynamic vibration absorber according to claim 1, further comprising a cylindrical member that covers the spring member, the weight member, and the fixing member.

第１貫通孔を有し、吸振対象が載置される基板と、
第２貫通孔が設けられた底板及び該底板の周囲から立設された周壁を有し、前記第２貫通孔と前記第１貫通孔とが重なった状態で前記底板が前記基板と対向するように配置された２つの筒状部材と、
各筒状部材の底板に設けた第２貫通孔に挿入された移動可能な支柱と、
前記筒状部材の開口側のそれぞれから前記支柱に嵌入された２つのバネ部材と、
各バネ部材の一端側に配置された錘部材と、
該錘部材の前記支柱に対する位置を固定するための固定部材と
を備え、
各バネ部材は、一端が各錘部材を押圧するとともに、他端が各筒状部材の底板を押圧していること
を特徴とする動吸振器。 A substrate having a first through hole and on which a vibration absorption target is placed;
A bottom plate provided with a second through-hole and a peripheral wall standing from the periphery of the bottom plate so that the bottom plate faces the substrate in a state where the second through-hole and the first through-hole overlap each other; Two cylindrical members arranged in
Movable struts inserted into second through holes provided in the bottom plate of each tubular member;
Two spring members fitted into the column from each of the opening side of the cylindrical member;
A weight member disposed on one end side of each spring member;
A fixing member for fixing the position of the weight member with respect to the column,
Each spring member has one end pressing each weight member and the other end pressing the bottom plate of each cylindrical member.

前記支柱に螺子溝が形成されており、
該螺子溝と螺嵌する溝を有する穴が前記固定部材に形成されていること
を特徴とする請求項１乃至請求項３のいずれか１つに記載の動吸振器。 A screw groove is formed in the support column,
The dynamic vibration absorber according to any one of claims 1 to 3, wherein a hole having a groove that is screwed into the screw groove is formed in the fixing member.