JPH06314888A - Chassis device - Google Patents

Chassis device

Info

Publication number
JPH06314888A
JPH06314888A JP10276793A JP10276793A JPH06314888A JP H06314888 A JPH06314888 A JP H06314888A JP 10276793 A JP10276793 A JP 10276793A JP 10276793 A JP10276793 A JP 10276793A JP H06314888 A JPH06314888 A JP H06314888A
Authority
JP
Japan
Prior art keywords
vibration
vibrations
leg
diaphragm
chassis
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.)
Granted
Application number
JP10276793A
Other languages
Japanese (ja)
Other versions
JP3524121B2 (en
Inventor
Atsushi Yamane
篤 山根
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP10276793A priority Critical patent/JP3524121B2/en
Publication of JPH06314888A publication Critical patent/JPH06314888A/en
Application granted granted Critical
Publication of JP3524121B2 publication Critical patent/JP3524121B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To absorb vibrations from a vibration generation source in equipment without transmitting the vibrations to a vibration-sensitive and easily damaged part, and what is more, to enhance vibration resistance effect against vibrations from the outside. CONSTITUTION:Dram parts 40 and 50, are made on a base 31 at a vibration area by drawing work. The drawn part 40 is so designed that the vibrations from a dram surface 41 furnished with a transformer, which is a vibrator, to travel to drawn surfaces 45 and 46 by way of drawn surfaces 43 and 44. As a result, a leg main body on the rear side of the drawn surfaces 45 and 46 and a rubber cushion damp the vibration effectively so that it is difficult to transmit the vibrations to a circuit board. It is also possible to enhance damping effect since the vibrations from a floor surface is damped by the leg main body and the rubber cushion.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、オーディオ/ビデオ機
器、或は情報記録再生装置等の精密機器において、機器
内の振動発生源からの振動を、振動を嫌う部分へ伝達せ
ずに吸収し、且つ外部からの振動に対しても防振効果の
高いシャーシ装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, in precision equipment such as audio / video equipment or information recording / reproducing equipment, absorbs vibration from a vibration source in the equipment without transmitting it to a portion where the vibration is disliked. The present invention also relates to a chassis device having a high vibration damping effect against external vibration.

【0002】[0002]

【従来の技術】たとえばオーディオアンプの主な振動源
として、電源トランス、電解コンデンサー、パワートラ
ンジスタ等があり、また外部から受ける振動としては、
スピーカからの音圧や他の回転機器からの振動等があ
る。これらが、シャーシ類を伝わり、最終的には回路基
板上の電子部品や配線材等を振動させる。その結果、こ
れらの接触抵抗や誘導電圧等が変化し、オーディオアン
プとしてのノイズや歪の要因となり、音質を悪化させ
る。したがって、各部の構造体は、振動の影響を受け難
くするか、受けたとしても瞬時に減衰するように設計し
なければならない。
2. Description of the Related Art For example, as a main vibration source of an audio amplifier, there are a power transformer, an electrolytic capacitor, a power transistor, and the like.
There are sound pressure from the speaker and vibration from other rotating devices. These are transmitted through the chassis and finally vibrate the electronic components, wiring materials, etc. on the circuit board. As a result, the contact resistance, the induced voltage, and the like change, which causes noise and distortion in the audio amplifier and deteriorates the sound quality. Therefore, the structure of each part must be designed so as to be less susceptible to the influence of vibration or to be instantly attenuated even if it is affected.

【0003】このため、従来では、シャーシをハニカム
形状にしたり部分的に板厚を厚くして補強したり、別部
材で補強する等の高剛性化を図っていた。
For this reason, conventionally, the chassis has been made to have a high rigidity such as a honeycomb shape, a partially thickened plate for reinforcement, or a separate member for reinforcement.

【0004】また、特開平4−229480号公報に
は、光ディスクドライブのフォーカシングの際に生じる
共振を抑制するため、シャーシにリブ部を設けて剛性を
高めるとともに、振動の伝達を遮断すべき部分にスリッ
トを設けたものが示されている。
Further, in Japanese Patent Laid-Open No. 4-229480, ribs are provided on the chassis to increase the rigidity and to suppress the transmission of vibrations in order to suppress the resonance that occurs during focusing of the optical disk drive. A slit is shown.

【0005】また、実開平3−10579号公報には、
機器本体内部に発生した振動を外装脚部を介して振動の
減衰作用を有した脚部に効率良く伝達するようにした防
振構造が開示されている。
Further, Japanese Utility Model Laid-Open No. 3-10579 discloses that
A vibration-damping structure is disclosed in which the vibration generated inside the device body is efficiently transmitted to a leg portion having a vibration damping function via an exterior leg portion.

【0006】[0006]

【発明が解決しようとする課題】しかしながら、上述し
た従来のハニカム形状やリブによって高剛性化を図った
ものでは、その部分のみ振幅が小さくなるだけであり、
振動を根本的に減衰させることはできない。また、スリ
ットにより振動を遮断するものでは、シャーシ全体の強
度を低下させる欠点がある。
However, in the above-mentioned conventional honeycomb shape and ribs having high rigidity, the amplitude is reduced only in that portion,
Vibration cannot be damped fundamentally. In addition, if the vibration is blocked by the slit, there is a drawback that the strength of the entire chassis is reduced.

【0007】また、上記の脚部で振動を減衰するように
したものにおいては、発生した振動を脚部以外へ伝えな
いような工夫がなされていないことから、効果が十分で
ない。
Further, the above-mentioned leg damping the vibration is not sufficiently effective because the generated vibration is not transmitted to the parts other than the leg.

【0008】本発明は、このような事情に対処してなさ
れたもので、機器内の振動発生源からの振動を、振動を
嫌う部分へ伝達せずに吸収し、且つ外部からの振動に対
しては防振効果を高めることができ、且つ強度の高いシ
ャーシ装置を提供することを目的とする。
The present invention has been made in consideration of such a situation, and absorbs vibrations from a vibration source in a device without transmitting the vibrations to a portion in which the vibrations are disliked, and against vibrations from the outside. As a result, it is an object of the present invention to provide a chassis device capable of enhancing the vibration damping effect and having high strength.

【0009】[0009]

【課題を解決するための手段】本発明のシャーシ装置
は、上記目的を達成するために、一のシャーシに有害振
動発生部品と防振対象部品とが取付けられ、少なくとも
一の脚を介して配置されるシャーシ装置において、前記
シャーシに環状のリブにより囲まれた少なくとも一の振
動領域を設け、前記有害振動発生部品及び少なくとも一
の脚を同一の前記振動領域内に取付けるとともに、前記
防振対象部品を前記振動領域外に取付けたことを特徴と
する。
In order to achieve the above-mentioned object, the chassis device of the present invention has a harmful vibration generating component and a vibration-proof component attached to one chassis and is arranged via at least one leg. In the chassis device described above, at least one vibration region surrounded by an annular rib is provided in the chassis, the harmful vibration generating component and at least one leg are mounted in the same vibration region, and the vibration isolation target component is mounted. Is attached outside the vibration area.

【0010】[0010]

【作用】本発明のシャーシ装置では、有害振動発生部品
が発生した振動は、同一の振動領域内を伝わって脚に伝
達され、脚内で減衰される。すなわち、機器内外の振動
発生源からの振動を、振動領域内に封じ込める結果とな
り、脚を伝わってくる外部からの振動に対しても防振効
果を増大させることができる。
In the chassis device of the present invention, the vibration generated by the harmful vibration generating component is transmitted to the leg through the same vibration region and is damped in the leg. That is, the vibrations from the vibration source inside and outside the device are confined within the vibration region, and the vibration damping effect can be increased even with respect to the vibration from the outside propagating through the leg.

【0011】[0011]

【実施例】以下、本発明の実施例の詳細を図面に基づい
て説明する。図1及び図2は、本発明のシャーシ装置
を、たとえばオーディオアンプに搭載する場合のシャー
シの一実施例を示すものである。これらの図に示すよう
に、シャーシ30は各種電子部品を搭載した回路基板を
図2の符号30a(破線で囲った領域)で示す部分に取
付けるためのベース31及び側壁32,33を有し、断
面コ字形状に板金をプレス加工して製造される。
Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show an embodiment of a chassis when the chassis device of the present invention is mounted on, for example, an audio amplifier. As shown in these drawings, the chassis 30 has a base 31 and side walls 32 and 33 for mounting a circuit board on which various electronic components are mounted on a portion indicated by reference numeral 30a (a region surrounded by a broken line) in FIG. It is manufactured by pressing a sheet metal into a U-shaped cross section.

【0012】ベース31のそれぞれの側壁32,33寄
りには、振動領域である絞り部40,50が設けられて
いる。絞り部40の内側部分には、絞り面41,42が
設けられており、絞り面41には振動源である図示しな
いトランスが取付けられるようになっている。各絞り面
41,42の絞り状態は、図3に示す断面を有する。す
なわち、X字状の絞り面42がベース31と同じ高さに
あるが、この部分は絞り面41を補強するためのもので
あり、形状や高さ(深さ)は適宜決めればよい。絞り面
41の両側には、湾曲状に延びた絞り面43,44が設
けられている。それぞれの絞り面43,44の端部に
は、ビス挿入孔45a,46aを有した絞り面45,4
6が設けられている。
On the side walls 32, 33 of the base 31 respectively, throttle portions 40, 50 which are vibration regions are provided. Diaphragm surfaces 41 and 42 are provided on the inner side of the diaphragm portion 40, and a transformer (not shown) that is a vibration source is attached to the diaphragm surface 41. The diaphragm state of each diaphragm surface 41, 42 has a cross section shown in FIG. That is, the X-shaped diaphragm surface 42 is at the same height as the base 31, but this portion is for reinforcing the diaphragm surface 41, and the shape and height (depth) may be appropriately determined. On both sides of the diaphragm surface 41, curved diaphragm surfaces 43 and 44 are provided. At the ends of the respective diaphragm surfaces 43, 44, there are screw surfaces 45, 4 having screw insertion holes 45a, 46a.
6 is provided.

【0013】ここで、絞り面41,43,44,45,
46とベース31との間には、絞り加工によって絞りリ
ブ41a,43a,44a,45b,46bが設けられ
ており、これら絞りリブ41a,43a,44a,45
b,46bによって環状リブが形成されている。また、
これら絞りリブ41a,43a,44a,45b,46
bは、絞り加工によって必然的にその肉厚が本来の厚さ
であるベース31の板厚よりも薄くなるとともに、この
部分は引き伸ばされて塑性変形を起こしている。このよ
うな塑性変形による場合、剛性の増すことは知られてお
り、形状的な補強の効果に加えて剛性が一層高められ
る。よって、環状リブによって囲まれた絞り部40内に
て発生したトランスによる振動は、この環状リブの部分
で振幅が抑制される。現象的にはこの部分で振動波が反
射若しくは減衰され、リブを越えて振動が伝わり難くな
る効果を生じるものと考えられる。
Here, the diaphragm surfaces 41, 43, 44, 45,
The drawing ribs 41a, 43a, 44a, 45b, 46b are provided between the base plate 46 and the base 31 by drawing, and these drawing ribs 41a, 43a, 44a, 45 are provided.
An annular rib is formed by b and 46b. Also,
These diaphragm ribs 41a, 43a, 44a, 45b, 46
The thickness of b is inevitably thinner than the plate thickness of the base 31, which is the original thickness, by drawing, and this portion is stretched and plastically deformed. It is known that rigidity is increased by such plastic deformation, and the rigidity is further enhanced in addition to the effect of geometrical reinforcement. Therefore, the vibration of the transformer generated in the narrowed portion 40 surrounded by the annular rib is suppressed in amplitude at the annular rib portion. Phenomenonally, it is considered that the vibration wave is reflected or attenuated at this portion, and the effect that the vibration is hard to be transmitted over the rib is produced.

【0014】各絞り面41,43,44,45,46の
絞り状態は、図4に示すように、急な段差なく、滑らか
につなげて振動を伝えやすくするとともに、両端の絞り
面45,46から絞り面43,44,41にかけて漸次
突出量が多くなる形状とされている。これにより、床面
と各絞り面43,44,45,46との間には、平行面
が形成されないので、この間での定在波が立ち難くな
る。またここで、各絞り面45,46の背面側が後述す
る脚の取付け部となっている。
As shown in FIG. 4, the respective diaphragm surfaces 41, 43, 44, 45 and 46 are smoothly connected to each other without a steep step so that vibration can be easily transmitted. To the diaphragm surfaces 43, 44, 41, the projection amount gradually increases. As a result, no parallel surface is formed between the floor surface and each of the diaphragm surfaces 43, 44, 45, 46, so that a standing wave is unlikely to stand between them. Further, here, the back side of each of the diaphragm surfaces 45 and 46 serves as a leg mounting portion described later.

【0015】絞り部50は、トランスの取付部を有さな
い点以外は絞り部40と同様である。すなわち、絞りリ
ブ51a,52b,53bによって形成される環状リブ
により囲まれた前後方向に延びる絞り面51と、ビス挿
入孔52a,53aを有した絞り面52,53とが設け
られている。ここで、絞り面52,53の背面側が後述
する脚の取付け部となる。
The throttle unit 50 is similar to the throttle unit 40 except that it does not have a transformer mounting portion. That is, a diaphragm surface 51 surrounded by annular ribs formed by the diaphragm ribs 51a, 52b, 53b and extending in the front-rear direction, and diaphragm surfaces 52, 53 having screw insertion holes 52a, 53a are provided. Here, the rear surfaces of the diaphragm surfaces 52 and 53 serve as leg mounting portions described later.

【0016】絞り面51,52,53の絞り状態は、図
5に示すように、両端の絞り面52,53から絞り面5
1の中央部分にかけて漸次突出量が多くなる形状とさ
れ、床面との間に平行面が形成されないようにしてい
る。
The diaphragm states of the diaphragm surfaces 51, 52 and 53 are, as shown in FIG. 5, from the diaphragm surfaces 52 and 53 at both ends to the diaphragm surface 5.
The shape is such that the amount of protrusion gradually increases toward the central portion of No. 1 so that a parallel surface is not formed with the floor surface.

【0017】また、絞り部50を湾曲させているのは、
上記の絞り部40との間にベース31上においても空間
においても平行面を形成せず、この間の定在波の発生を
無くすとともに、ベース31の剛性を高めてベース31
自体の振動を発生し難くするためである。
Further, the reason why the diaphragm 50 is curved is that
A parallel plane is not formed between the narrowed portion 40 and the base 31 either on the base 31 or in the space, so that the standing wave is not generated between them and the rigidity of the base 31 is increased.
This is because it is difficult for the vibration of itself to occur.

【0018】図6乃至図9は、上記の絞り部40,50
の絞り面45,46,52,53の背面側の脚の取付け
部に取付けられる脚を示すもので、円筒形状とされてい
る。ここで、脚本体60は、たとえばナイロン粉末と鉄
分とを複合化した材料にてインジェクション成形した振
動に対して内部損失の大きい高減衰の樹脂材料で作られ
ている。脚本体60の上下面には、リング状の嵌合溝6
1,62が刻設されており、これらの嵌合溝61,62
にリング状の防振ゴム63,64が接着剤等によって固
着されている。
6 to 9 show the above-mentioned throttle portions 40 and 50.
This shows a leg attached to the leg attachment portion on the back side of the diaphragm surfaces 45, 46, 52, 53, and has a cylindrical shape. Here, the leg main body 60 is made of a highly damped resin material having a large internal loss with respect to vibration, which is injection-molded with a composite material of nylon powder and iron, for example. The ring-shaped fitting groove 6 is formed on the upper and lower surfaces of the leg body 60.
1, 62 are engraved, and these fitting grooves 61, 62 are engraved.
The ring-shaped anti-vibration rubbers 63 and 64 are fixed to each other with an adhesive or the like.

【0019】脚本体60の中心部分には、下方に向けて
漸次径が大きくされた弾頭形状のビス挿入凹部65が形
成され、中央にビス66が挿入されるビス挿入孔67が
形成されている。ここで、ビス挿入凹部65が弾頭形状
とされているのは、内部に平行面を形成せず、その空間
内において定在波を生じ難くするためである。
At the center of the leg body 60, a warhead-shaped screw insertion recess 65 having a gradually increasing diameter is formed, and a screw insertion hole 67 into which a screw 66 is inserted is formed at the center. . Here, the reason why the screw insertion concave portion 65 has a warhead shape is that a parallel plane is not formed inside and a standing wave is less likely to occur in the space.

【0020】続いて、以上のような構成のシャーシ装置
における振動の吸収作用について説明する。まず、上記
の絞り部40の絞り面41に取付けられるトランスへは
たとえば50HZ の商用電源が供給される。このため、
トランス自体が50HZ やその高周波成分の周波数で振
動する。この振動は、上述したように、絞り面43,4
4を伝って絞り面45,46に伝わる。このとき、絞り
部40内の振動は、上述した絞り部40を取り囲む環状
リブによってその外側には伝わらない。よって、絞り部
40内の振動は、全て絞り面45,46に到達し、その
背面側に取付けられた脚本体60に図10の矢印Aで示
すように伝わる。ここで、脚本体60は、上述したよう
に、高減衰の樹脂材料でできているため、その内部に伝
わった振動は脚本体60内部で熱エネルギーに変換され
ることにより減衰される。また、脚本体60内部から逆
流した図中矢印Bで示す振動成分は、防振ゴム63によ
って減衰され、基板取付部30aの方へ伝わることはな
い。
Next, the vibration absorbing function of the chassis device having the above-described structure will be described. First, for example, a commercial power source of 50 Hz is supplied to the transformer mounted on the diaphragm surface 41 of the diaphragm section 40. For this reason,
The transformer itself vibrates at a frequency of 50Hz or its high frequency component. This vibration is caused by the diaphragm surfaces 43, 4 as described above.
4 is transmitted to the diaphragm surfaces 45 and 46. At this time, the vibration in the throttle portion 40 is not transmitted to the outside by the annular rib surrounding the throttle portion 40 described above. Therefore, all the vibrations in the diaphragm portion 40 reach the diaphragm surfaces 45 and 46, and are transmitted to the leg body 60 attached to the rear surface thereof as shown by an arrow A in FIG. Here, since the leg body 60 is made of a highly damped resin material as described above, the vibration transmitted to the inside of the leg body 60 is attenuated by being converted into heat energy inside the leg body 60. Further, the vibration component that flows backward from the inside of the leg body 60 and is shown by the arrow B in the figure is attenuated by the vibration isolating rubber 63 and is not transmitted to the board mounting portion 30a.

【0021】また、上述したように、脚本体60のビス
挿入凹部65が弾頭形状とされているので、その内部空
間内においては定在波が発生せず、振動が増強されるお
それがない。
Further, as described above, since the screw insertion concave portion 65 of the leg main body 60 is formed into a warhead shape, a standing wave is not generated in the internal space of the leg main body 60 and vibration is not likely to be enhanced.

【0022】一方、床面から伝わってくる振動は、図1
1の矢印Cで示すように、脚本体60に防振ゴム64を
介してその内部に伝わるが、やはり熱エネルギーに変換
されることにより減衰される。また、脚本体60内部か
ら上方に向かう図中矢印Dで示す振動成分は、防振ゴム
63によって減衰される。
On the other hand, the vibration transmitted from the floor is shown in FIG.
As indicated by the arrow C in FIG. 1, the vibration is transmitted to the inside of the leg body 60 via the vibration-proof rubber 64, but is also attenuated by being converted into heat energy. Further, the vibration component shown by the arrow D in the figure from the inside of the leg body 60 to the upper side is damped by the vibration isolating rubber 63.

【0023】なお、もし矢印Eで示すように、脚取付部
へ流入する振動があっても、絞り部43,44,51等
を伝わって他方の脚に伝達され、そこで減衰される。絞
り部50において、その絞り面上に振動体を取付けない
にもかかわらず、双方の脚取付部を絞り面でつないでい
るのはそのためである。
As indicated by arrow E, even if there is vibration flowing into the leg mounting portion, it is transmitted to the other leg through the throttle portions 43, 44, 51 and the like, and is damped there. This is the reason why, in the diaphragm portion 50, both leg mounting portions are connected by the diaphragm surface, even though the vibrating body is not mounted on the diaphragm surface.

【0024】また、床面と絞り部40,50の各絞り面
との間には、平行面が形成されないので、定在波が発生
しない。更に、上述したように、絞り部同士が湾曲して
対向しているので、ベース31上で平行する部分がな
く、ベース31内部においても定在波が発生しない。同
時に、ベース31自体の剛性が高められるので、全体的
な振動も抑制される。
Further, since no parallel surface is formed between the floor surface and each of the diaphragm surfaces of the diaphragm portions 40 and 50, no standing wave is generated. Further, as described above, since the narrowed portions are curved and face each other, there is no parallel portion on the base 31, and no standing wave is generated inside the base 31. At the same time, since the rigidity of the base 31 itself is increased, overall vibration is also suppressed.

【0025】図12は、このような絞り面41に取り付
けた振動源からの低周波(〜250HZ )振動の伝達特
性を測定した結果を示すものであり、図13の絞り部を
有しないものと対比することによってその減衰性が明確
になる。すなわち、図中実線で示す特性は、脚取付部へ
の伝達特性を示すもので、上述したトランスの基本振動
数である50HZ に着目すると、約−5dBの伝達レベ
ルである。また、図中点線で示す特性は、回路基板取付
部30aへの伝達特性を示すもので、上記同様に、50
HZ に着目すると、約−11dBの伝達レベルである。
FIG. 12 shows the results of measuring the transfer characteristics of low-frequency (.about.250 Hz) vibrations from the vibration source attached to the diaphragm surface 41. It is assumed that the diaphragm portion of FIG. 13 is not provided. By contrast, the damping property becomes clear. That is, the characteristic indicated by the solid line in the figure shows the transmission characteristic to the leg mounting portion, and when focusing on the fundamental frequency of 50Hz of the above-mentioned transformer, the transmission level is about -5 dB. Further, the characteristic indicated by the dotted line in the figure shows the transmission characteristic to the circuit board mounting portion 30a, and is the same as the above.
Focusing on HZ, the transfer level is about -11 dB.

【0026】一方、図13に示すものの場合では、上記
同様に、それぞれ約−13dB及び約−5dBである。
このことは、絞り部を有した本実施例の場合、脚への振
動の伝達性が良く、絞り部を有しないものの場合には回
路基板への振動の伝達性が良いことを表している。言い
換えれば、振動の大半を脚へ伝達させ、そこで消滅させ
る結果となるということである。
On the other hand, in the case of the one shown in FIG. 13, it is about −13 dB and about −5 dB, respectively, similarly to the above.
This means that in the case of the present embodiment having the throttle portion, the transmission of vibration to the leg is good, and in the case of not having the throttle portion, the transmission of vibration to the circuit board is good. In other words, most of the vibration will be transmitted to the leg and will disappear there.

【0027】このように、本実施例では、ベース31に
絞り加工によって振動領域である絞り部40,50を設
け、絞り部40においては振動体であるトランスを取り
付けている絞り面41からの振動を、絞り面43,44
を経て絞り面45,46に伝わり易くした。したがっ
て、絞り面45,46の背面側の脚本体60及び防振ゴ
ム63,64によってその振動が効率良く減衰され、回
路基板に伝わり難くなる。
As described above, in this embodiment, the base 31 is provided with the diaphragm portions 40 and 50 which are vibration regions by the drawing process, and the diaphragm portion 40 vibrates from the diaphragm surface 41 to which the transformer which is the vibration member is attached. The diaphragm surfaces 43, 44
To facilitate transmission to the diaphragm surfaces 45 and 46. Therefore, the leg body 60 and the anti-vibration rubbers 63 and 64 on the rear side of the diaphragm surfaces 45 and 46 efficiently dampen the vibrations and are difficult to transmit to the circuit board.

【0028】また、床面から伝わる振動は、絞り部40
及び絞り部50の絞り面45,46及び絞り面52,5
3の背面側にそれぞれ取り付けられているいずれかの脚
本体60及び防振ゴム63,64によって減衰されるの
で、防振効果が維持される。
Further, the vibration transmitted from the floor surface is reduced by the throttle unit 40.
And the diaphragm surfaces 45, 46 and the diaphragm surfaces 52, 5 of the diaphragm unit 50.
Since the vibration is damped by any one of the leg bodies 60 and the vibration-proof rubbers 63 and 64 attached to the back side of the No. 3, the vibration-proof effect is maintained.

【0029】なお、上記実施例においては、振動の伝達
経路となる絞り面41,43,44,45,46,5
1,52,53を画定する環状リブの断面形状を、単一
な下降段差としたが、たとえば図14(a)に示すよう
に、上昇段差であってもよく、同図(b),(c)に示
すように、凹状や凸状の溝状であってもよく、これらの
組合せであってもよい。
In the above embodiment, the diaphragm surfaces 41, 43, 44, 45, 46, 5 serving as vibration transmission paths.
Although the cross-sectional shape of the annular ribs defining 1, 52, 53 is a single descending step, it may be an ascending step, as shown in FIG. As shown in c), it may have a concave or convex groove shape, or a combination thereof.

【0030】また、以上の実施例においては、本発明の
シャーシ装置を、たとえばオーディオアンプに搭載して
トランスの振動を吸収する場合について説明したが、こ
の例に限らず、本発明をたとえばビデオ機器、或は情報
記録再生装置等の精密機器に内蔵して、モータ等の振動
を吸収するようにしてもよい。
In the above embodiment, the case where the chassis device of the present invention is mounted on, for example, an audio amplifier to absorb the vibration of the transformer has been described, but the present invention is not limited to this example, and the present invention is applied to, for example, a video device. Alternatively, it may be incorporated in a precision device such as an information recording / reproducing device to absorb vibration of a motor or the like.

【0031】なお、上記実施例においては、板金を絞り
加工して環状リブを形成したシャーシを示したが、樹脂
の成形によるシャーシに適用することもできる。但し、
樹脂の場合は、リブ部分においても材料の特性が均一で
あるため、振動波の反射や減衰が起こり難い。このた
め、リブ部分のみ他の材質を混入させたり、厚みを変え
る等により、これを補って同様の効果を得ることができ
る。
In the above embodiment, the chassis in which the annular rib is formed by drawing the sheet metal is shown, but it can be applied to the chassis formed of resin. However,
In the case of resin, the characteristics of the material are uniform even in the rib portion, so that the reflection or attenuation of the vibration wave is unlikely to occur. Therefore, by mixing another material only in the rib portion or changing the thickness, the same effect can be obtained by supplementing this.

【0032】[0032]

【発明の効果】以上説明したように、本発明のシャーシ
装置によれば、シャーシに環状のリブにより囲まれた少
なくとも一の振動領域を設け、有害振動発生部品及び少
なくとも一の脚を同一の振動領域内に取付けるととも
に、防振対象部品を振動領域外に取付けたので、シャー
シの強度を低下させることなく機器内の振動発生源から
の振動を振動領域内に封じ込めて、振動を嫌う部分へは
伝達せずに吸収することができ、更に外部からの振動に
対しては振動領域内に設けた脚によって防振効果を高め
ることができる。
As described above, according to the chassis device of the present invention, the chassis is provided with at least one vibrating region surrounded by the annular rib, and the harmful vibration generating component and at least one leg are vibrated in the same vibration. In addition to being installed inside the area, the parts to be isolated from vibration were installed outside the vibration area, so the vibration from the vibration source inside the equipment can be confined within the vibration area without reducing the strength of the chassis, and the parts that do not like vibration can be suppressed. It can be absorbed without being transmitted, and vibrations from the outside can be further enhanced by the legs provided in the vibration region.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明のシャーシ装置を、たとえばオーディオ
アンプに搭載されるシャーシに適用した場合の一実施例
を示す斜視図である。
FIG. 1 is a perspective view showing an embodiment in which a chassis device of the present invention is applied to a chassis mounted on, for example, an audio amplifier.

【図2】図1のベースを示す平面図である。2 is a plan view showing the base of FIG. 1. FIG.

【図3】図2のIII−III線に沿った断面図であ
る。
3 is a cross-sectional view taken along the line III-III in FIG.

【図4】図2のシャーシに脚を取り付けた状態を示す左
側面図である。
FIG. 4 is a left side view showing a state in which legs are attached to the chassis of FIG.

【図5】図2のシャーシに脚を取り付けた状態を示す右
側面図である。
5 is a right side view showing a state in which legs are attached to the chassis of FIG.

【図6】図1の絞り部の絞り面の背面側の脚の取付け部
に取付けられる脚を示す図である。
FIG. 6 is a diagram showing a leg attached to a leg attaching portion on the back side of the aperture surface of the aperture unit of FIG. 1;

【図7】図6の脚を示す断面図である。7 is a cross-sectional view showing the leg of FIG.

【図8】図7の脚を示す平面図である。8 is a plan view showing the leg of FIG. 7. FIG.

【図9】図7の脚を示す底面図である。9 is a bottom view showing the leg of FIG. 7. FIG.

【図10】図7の脚による振動の減衰動作を説明するた
めの図である。
FIG. 10 is a diagram for explaining a vibration damping operation by the legs of FIG. 7.

【図11】図7の脚による振動の減衰動作を説明するた
めの図である。
FIG. 11 is a diagram for explaining a vibration damping operation by the legs of FIG.

【図12】図1のシャーシを使用した実施例における振
動の伝達特性を示す図である。
FIG. 12 is a diagram showing a vibration transfer characteristic in an example using the chassis of FIG. 1;

【図13】図1の絞り部を有しないシャーシを使用した
場合の振動の伝達特性を示す図である。
FIG. 13 is a diagram showing a transmission characteristic of vibration when the chassis without the throttle portion of FIG. 1 is used.

【図14】図7の絞り面の断面形状を変えた場合の他の
形状を示す図である。
14 is a diagram showing another shape when the cross-sectional shape of the diaphragm surface in FIG. 7 is changed.

【符号の説明】[Explanation of symbols]

30 シャーシ 30a 回路基板取付部 31 ベース 40,50 絞り部 41,42,43,44,45,46,51,52,5
3 絞り面 41a,42a,43a,44a,45b,46b,5
1a,52b,53b絞りリブ 60 脚本体 63,64 防振ゴム 65 ビス挿入凹部
30 chassis 30a circuit board mounting portion 31 base 40, 50 throttle portion 41, 42, 43, 44, 45, 46, 51, 52, 5
3 Drawing surfaces 41a, 42a, 43a, 44a, 45b, 46b, 5
1a, 52b, 53b Drawing rib 60 Leg body 63, 64 Anti-vibration rubber 65 Screw insertion recess

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 一のシャーシに有害振動発生部品と防振
対象部品とが取付けられ、少なくとも一の脚を介して配
置されるシャーシ装置において、 前記シャーシに環状のリブにより囲まれた少なくとも一
の振動領域を設け、 前記有害振動発生部品及び少なくとも一の脚を同一の前
記振動領域内に取付けるとともに、 前記防振対象部品を前記振動領域外に取付けたことを特
徴とするシャーシ装置。
1. A chassis device in which a harmful vibration-generating component and a vibration-proof component are attached to one chassis and arranged via at least one leg, wherein at least one chassis surrounded by annular ribs is provided on the chassis. A chassis device, wherein a vibration region is provided, the harmful vibration generating component and at least one leg are mounted in the same vibration region, and the vibration isolation target component is mounted outside the vibration region.
JP10276793A 1993-04-28 1993-04-28 Chassis equipment and precision equipment Expired - Fee Related JP3524121B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10276793A JP3524121B2 (en) 1993-04-28 1993-04-28 Chassis equipment and precision equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10276793A JP3524121B2 (en) 1993-04-28 1993-04-28 Chassis equipment and precision equipment

Publications (2)

Publication Number Publication Date
JPH06314888A true JPH06314888A (en) 1994-11-08
JP3524121B2 JP3524121B2 (en) 2004-05-10

Family

ID=14336333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10276793A Expired - Fee Related JP3524121B2 (en) 1993-04-28 1993-04-28 Chassis equipment and precision equipment

Country Status (1)

Country Link
JP (1) JP3524121B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005348506A (en) * 2004-06-02 2005-12-15 Tdk Corp Outer cover of vehicle-mounted power converter and vehicle-mounted power converter using the same
JP2007317773A (en) * 2006-05-24 2007-12-06 Funai Electric Co Ltd Electronic device and chassis therefor
US7773373B2 (en) 2006-12-25 2010-08-10 Onkyo Corporation Vibration-damping structure for audio apparatus
US11516578B1 (en) 2021-05-21 2022-11-29 Denso Ten Limited Plate member of acoustic equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005348506A (en) * 2004-06-02 2005-12-15 Tdk Corp Outer cover of vehicle-mounted power converter and vehicle-mounted power converter using the same
JP2007317773A (en) * 2006-05-24 2007-12-06 Funai Electric Co Ltd Electronic device and chassis therefor
US7773373B2 (en) 2006-12-25 2010-08-10 Onkyo Corporation Vibration-damping structure for audio apparatus
US11516578B1 (en) 2021-05-21 2022-11-29 Denso Ten Limited Plate member of acoustic equipment

Also Published As

Publication number Publication date
JP3524121B2 (en) 2004-05-10

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