JP2007100929A

JP2007100929A - Vibration reducing device

Info

Publication number: JP2007100929A
Application number: JP2005295243A
Authority: JP
Inventors: Susumu Fujiwara; 奨藤原; Hiroshi Ando; 宏安藤; Masahiko Fukuda; 正彦福田; Daisuke Sakai; 大輔酒井
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2005-10-07
Filing date: 2005-10-07
Publication date: 2007-04-19

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration reducing device having simple construction for more effectively reducing vibration generated by a movable body as a vibration generating source. <P>SOLUTION: A support 9 is fixed into a casing 2, the movable body 3 as the vibration generating source is supported via a first damper 4 by the support 9, and the support 9 is supported by a second damper 11. Vibration generated during operating the movable body 3 is efficiently damped in the way of two-stage vibration absorbing construction where it is absorbed by the first damper 4 and converted into heat energy and then it is absorbed by the second damper 11 for thermal attenuation. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば洗濯機のような筐体内に振動発生源となる可動体が設置された装置の、可動体の稼働時に発生する振動を効果的に低減することのできる振動低減装置に関する。 The present invention relates to a vibration reduction apparatus capable of effectively reducing vibrations generated when a movable body is operated in an apparatus in which a movable body serving as a vibration generation source is installed in a housing such as a washing machine.

従来、この種の装置として例えばドラム式洗濯機に適用された脚ゴムを用いた振動低減装置がある。この脚ゴム方式の振動低減装置は、床面と接する脚ゴムを、低硬度低反発ゴム部材を高硬度ゴム部材で覆った複合構造とし、洗濯槽の回転時に発生する振動を主に低硬度低反発ゴム部材で減衰させるようにしていた（例えば、特許文献１参照）。 Conventionally, as this type of apparatus, there is a vibration reducing apparatus using leg rubber applied to, for example, a drum type washing machine. This leg rubber type vibration reducing device has a composite structure in which the leg rubber in contact with the floor surface is covered with a low hardness and low resilience rubber member with a high hardness rubber member, and the vibration generated when the washing tub rotates is mainly low in hardness and low. It was made to attenuate with a rebound rubber member (for example, refer to patent documents 1).

特開平１１−１６４９８６号公報JP-A-11-164986

しかしながら、脚ゴムで振動減衰を行う従来の振動低減装置にあっては、ゴムの潰れや設置の際のゴムの捲れなどにより、本来の振動低減機能を十分に発揮させることができず、脱水時等の洗濯槽で発生する振動が脚ゴムで減衰できずに、床面に振動伝播して、階下への音放射（騒音）の問題などを引き起こしていた。 However, conventional vibration reduction devices that use vibration damping with leg rubber cannot fully demonstrate their original vibration reduction function due to rubber crushing or rubber curling during installation. The vibration generated in the washing tub cannot be attenuated by the leg rubber and propagates to the floor surface, causing problems such as sound emission (noise) downstairs.

また、脱水初期に、洗濯物のアンバランス状態によって、脱水の回転に伴い、偏心荷重による不均一な大振動が発生し、脚部だけでは十分な振動減衰が行われず、結果的に床面への振動伝播が発生していた。 Also, at the beginning of dehydration, due to the unbalanced state of the laundry, non-uniform large vibration due to eccentric load occurs with the rotation of dehydration, and sufficient vibration damping is not performed only by the legs, resulting in the floor surface. The vibration propagation occurred.

ところで、ドラム式洗濯機においては、一般に可動体である洗濯槽と接地部である脚ゴムとの間に洗濯槽の回転時に発生する振動を低減する防振ダンパ（第１のダンパ）が配置されている。しかし、前述のような脱水初期の洗濯物のアンバランス状態によって引き起こされる偏心荷重による大振動に対しては、第１のダンパによっても減衰させることが困難な場合があり、前記脚ゴムから床面に振動伝播して階下へ音放射（騒音）する問題を防ぐことはできなかった。 By the way, in a drum type washing machine, a vibration isolating damper (first damper) that reduces vibration generated when the washing tub rotates is generally disposed between a washing tub that is a movable body and a leg rubber that is a grounding portion. ing. However, it may be difficult to attenuate even with the first damper against the large vibration caused by the eccentric load caused by the unbalanced state of the laundry in the initial stage of dehydration as described above. It was not possible to prevent the problem of sound propagation (noise) downstairs due to vibration propagation.

本発明の技術的課題は、振動発生源となる可動体から発生する振動を、簡単な構成で、より効果的に低減させ得るようにすることにある。 A technical problem of the present invention is to make it possible to more effectively reduce vibration generated from a movable body serving as a vibration generation source with a simple configuration.

本発明に係る振動低減装置は、筐体内に支持体を固定し、支持体に第１のダンパを介して振動発生源となる可動体を支持させるとともに、支持体を第２のダンパに支持させたものである。 The vibration reduction device according to the present invention fixes a support body in a housing, and supports the movable body serving as a vibration generation source via the first damper on the support body, and supports the support body on the second damper. It is a thing.

本発明の振動低減装置によれば、可動体の稼働時に発生する振動を、第１のダンパにより吸収して熱エネルギに変換させた後、第２のダンパにより吸収して熱減衰させる２段の防振構成により、効率良く減衰させることができる。このため、床面への振動伝播を効果的に低減させることができる。 According to the vibration reducing device of the present invention, the vibration generated during operation of the movable body is absorbed by the first damper and converted into thermal energy, and then absorbed by the second damper and thermally attenuated. It can be attenuated efficiently by the anti-vibration configuration. For this reason, vibration propagation to the floor surface can be effectively reduced.

実施の形態１．
以下、図示実施形態により本発明を説明する。
図１は本発明の実施の形態１に係る振動低減装置を適用した洗濯槽傾斜配置型の洗濯機を側方より示す概略構成図、図２はその要部である第２のダンパの構成部材である振動除去構造体を示す正面図、図３は同じく第２のダンパの構成部材である耐振構造体の上面図である。 Embodiment 1 FIG.
The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a schematic configuration diagram showing a washing tub inclined type washing machine to which a vibration reducing apparatus according to Embodiment 1 of the present invention is applied, from the side, and FIG. 2 is a component of a second damper which is a main part thereof. FIG. 3 is a top view of a vibration-proof structure that is a constituent member of the second damper.

図１に示すように、本実施形態の振動低減装置を用いた洗濯機１は、筐体２内に傾斜配置した洗濯槽３と、洗濯槽３を下方より弾性保持する周知の第１のダンパ４と、筐体２の前面５に設置してなる扉６と、洗濯槽３と前面５の扉６とを連結するためのラバー体７と、洗濯槽３を静態支持するためのばね部材８と、筐体２内の下部に固定されて第１のダンパ４を任意位置に固定可能な支持体９とを備えており、更に支持体９の下方にこの支持体９とのみ接続された第２のダンパ１１が設けられている。 As shown in FIG. 1, a washing machine 1 using the vibration reducing device of the present embodiment includes a washing tub 3 inclined in a housing 2 and a well-known first damper that elastically holds the washing tub 3 from below. 4, a door 6 installed on the front surface 5 of the housing 2, a rubber body 7 for connecting the washing tub 3 and the door 6 on the front surface 5, and a spring member 8 for statically supporting the washing tub 3. And a support 9 fixed to the lower part of the housing 2 and capable of fixing the first damper 4 to an arbitrary position, and further connected to the support 9 only below the support 9. Two dampers 11 are provided.

これをさらに詳述すると、第２のダンパ１１は、垂直荷重に対して弾性変形し易く、水平荷重に対しては抵抗力が大きい振動除去構造体すなわち図２のように天然ゴムに高分子または低分子制振材料を混ぜ合わせて樽状に成型した混合成型品１２と、混合成型品１２を下方から支持する耐振構造体すなわち図３のように四隅が鎹機能を持つコーナ補強部材１３によって補強された矩形リングプレート１４とからなり、矩形リングプレート１４の下面に接地部となる脚ゴム１５が装着されている。 More specifically, the second damper 11 is elastically deformed with respect to a vertical load and has a large resistance against a horizontal load. That is, the second damper 11 has a polymer or natural rubber as shown in FIG. Reinforced by a mixed molded product 12 formed by mixing low-molecular vibration damping materials into a barrel shape and a vibration-proof structure that supports the mixed molded product 12 from below, that is, a corner reinforcing member 13 having four corners as shown in FIG. A leg rubber 15 serving as a grounding portion is attached to the lower surface of the rectangular ring plate 14.

混合成型品１２は、その固有振動周波数の値が、洗濯槽３の固有振動周波数の値よりも低く、かつこの洗濯槽３と共振しない振動周波数帯域内にあるように成型されてなるものである。 The mixed molded product 12 is molded so that the value of the natural vibration frequency is lower than the value of the natural vibration frequency of the washing tub 3 and is in a vibration frequency band that does not resonate with the washing tub 3. .

次に、本実施形態の振動低減装置の動作を図１乃至図３に基づき説明する。洗濯機１において、脱水時、洗濯槽３は最速ほぼ１０００ｒｐｍで回転運動する。この時、最速回転に行きつくまでの低速から高速までの回転動作に伴って、回転数に応じた低周波数帯域から高周波数帯域までの振動が洗濯槽３で発生する。この洗濯槽３の回転に伴い発生した振動エネルギは、第１のダンパ４で決定する減衰定数に応じて、熱エネルギに変換されることで減衰される。 Next, the operation of the vibration reducing apparatus according to the present embodiment will be described with reference to FIGS. In the washing machine 1, during dehydration, the washing tub 3 rotates at a maximum speed of approximately 1000 rpm. At this time, vibration from a low frequency band to a high frequency band corresponding to the number of rotations is generated in the washing tub 3 in accordance with the rotation operation from the low speed to the high speed until reaching the fastest rotation. The vibration energy generated with the rotation of the washing tub 3 is attenuated by being converted into heat energy according to the attenuation constant determined by the first damper 4.

この洗濯槽３の回転増速に伴い変化する低周波数帯域から高周波数帯域に至るまでの周波数帯域内には、洗濯槽３が持つ固有の振動周波数に対して共振周波数となる帯域がいくつか存在し、この共振周波数帯域を通過しながら回転速度が上昇する。洗濯槽３の回転に伴い発生する周波数が洗濯槽３の固有振動周波数の２倍や３倍あるいはそれ以上の倍数の共振周波数帯域においては、共振が発生しても振幅がさほど大きくなく、振動を第１のダンパ４で吸収できる程度であり、問題は発生しない。ところが、低回転時、つまり洗濯槽３内の洗濯物が偏った状態で脱水運転を行う場合の回転初期に発生するアンバランス回転に伴うアンバランス振動（低周波数帯域の振動）に関しては、洗濯槽３が持つ固有振動周波数（例えば１．７Ｈｚとする）と、アンバランス回転に伴う低周波数帯域の振動周波数（例えば１００回転で約１．７Ｈｚの振動となる）が一致した場合に共振現象が発現すると、大きな振動エネルギとなり、洗濯槽３及び洗濯機１そのものが大振動を起こし、この振動エネルギを第１のダンパ４だけで吸収して減衰させることが困難となる場合がある。 In the frequency band from the low frequency band to the high frequency band that changes with the rotational acceleration of the washing tub 3, there are several bands that have resonance frequencies with respect to the inherent vibration frequency of the washing tub 3. The rotational speed increases while passing through this resonance frequency band. In the resonance frequency band where the frequency generated by the rotation of the washing tub 3 is twice, three times or more than the natural vibration frequency of the washing tub 3, even if resonance occurs, the amplitude is not so large, and vibration is generated. The first damper 4 is capable of absorbing, and no problem occurs. However, regarding unbalanced vibration (low-frequency band vibration) accompanying unbalanced rotation that occurs at the beginning of rotation when the dehydration operation is performed at low rotation, that is, when the laundry in the washing tub 3 is biased, the washing tub Resonance phenomenon occurs when the natural vibration frequency of 3 (for example, 1.7 Hz) matches the vibration frequency in the low frequency band associated with unbalanced rotation (for example, vibration of about 1.7 Hz at 100 rotations). As a result, large vibration energy is generated, and the washing tub 3 and the washing machine 1 themselves generate a large vibration, and it may be difficult to absorb and attenuate the vibration energy only by the first damper 4.

本実施形態においては、第１のダンパ４と接地部となる脚ゴム１５との間に、第２のダンパ１１すなわち天然ゴムに高分子または低分子制振材料を混ぜ合わせて樽状に成型した混合成型品１２と、混合成型品１２を下方から支持する矩形リングプレート１４を設けているので、例え洗濯槽３が持つ固有振動周波数と低回転時に伴う低周波数帯域の振動周波数が一致した共振現象による大きな振動エネルギが発生しても、これを第１のダンパ４により吸収して熱エネルギに変換させた後、混合成型品１２の天然ゴムの粘性抵抗により吸収して熱減衰させることができて、効率良く減衰させることができる。このため、床面への振動伝播を強力に低減させることができる。 In the present embodiment, the second damper 11, that is, natural rubber, is mixed with a polymer or a low-molecular vibration damping material between the first damper 4 and the leg rubber 15 serving as a ground contact portion, and is molded into a barrel shape. Since the mixed molded product 12 and the rectangular ring plate 14 that supports the mixed molded product 12 from below are provided, for example, the resonance phenomenon in which the natural vibration frequency of the washing tub 3 matches the vibration frequency in the low frequency band associated with low rotation. Even if large vibration energy is generated due to the above, it can be absorbed by the first damper 4 and converted into thermal energy, and then absorbed by the viscous resistance of the natural rubber of the mixed molded product 12 to be thermally attenuated. Can be attenuated efficiently. For this reason, vibration propagation to the floor surface can be strongly reduced.

また、混合成型品１２を胴部に膨らみを持つ樽状に成型しているので、これを図１の如く矩形リングプレート１４上に立設配置することで、垂直方向から加わる外力（圧縮方向の振動）に対しては弾性変形し易く、水平方向から加わる外力（剪断方向の振動）に対しては抵抗力が大きく動きにくくすることができる。このため、混合成型品１２の上方から伝播する洗濯槽３の振動に対しては、混合成型品１２が垂直方向に弾性変形して、振動吸収を容易に行うことができて、洗濯槽３内の洗濯物の偏りによる過渡的な垂直方向の大振動成分に対しても十分にこれを減衰させることができる。更に、水平方向へは動き難くなり、洗濯機１の筐体２を水平方向に振動させることが無くなる。 Further, since the mixed molded product 12 is molded into a barrel shape having a bulge in the body portion, the external force applied in the vertical direction (in the compression direction) can be obtained by placing this on the rectangular ring plate 14 as shown in FIG. It is easy to be elastically deformed with respect to (vibration), and the resistance force is large and difficult to move against external force applied from the horizontal direction (vibration in the shear direction). For this reason, with respect to the vibration of the washing tub 3 propagating from above the mixed molded product 12, the mixed molded product 12 is elastically deformed in the vertical direction so that vibration can be easily absorbed. This can be sufficiently damped even with respect to the transient large vibration component in the vertical direction due to the bias of the laundry. Furthermore, it becomes difficult to move in the horizontal direction, and the casing 2 of the washing machine 1 is not vibrated in the horizontal direction.

また、矩形リングプレート１４の四隅を、鎹機能を持つコーナ補強部材１３によって補強して各コーナ部がトラス状となる耐震構造となっているので、水平方向から加わる外力（振動）は直接応力（引張や圧縮）として作用する。このため、横揺れに対する強度の確保が容易で、水平方向の振動を抑制することができる。そして、混合成型品１２による水平方向振動抑制作用と相俟って、水平方向の振動をより効果的に抑制することができる。 Further, since the corners of the rectangular ring plate 14 are reinforced with corner reinforcing members 13 having a saddle function and each corner portion has a truss shape, external force (vibration) applied from the horizontal direction is directly stressed ( Acting as tension or compression). For this reason, it is easy to ensure the strength against rolling and horizontal vibration can be suppressed. And, in combination with the horizontal vibration suppressing action by the mixed molded product 12, horizontal vibration can be more effectively suppressed.

また、混合成型品１２を、その固有振動周波数の値が、洗濯槽３の固有振動周波数の値よりも低く、かつこの洗濯槽３と共振しない振動周波数帯域内にあるように成型しているので、洗濯槽３と混合成型品１２との間では共振が起こらず、安定した振動低減作用が得られる。 Further, the mixed molded product 12 is molded so that the value of its natural vibration frequency is lower than the value of the natural vibration frequency of the washing tub 3 and is in a vibration frequency band that does not resonate with the washing tub 3. In addition, resonance does not occur between the washing tub 3 and the mixed molded product 12, and a stable vibration reducing action is obtained.

実施の形態２．
図４は本発明の実施の形態２に係る振動低減装置を適用した洗濯槽傾斜配置型の洗濯機を側方より示す概略構成図、図５はその要部である第２のダンパの構成部材である振動除去構造体の一例を示す正面図、図６は同じく第２のダンパの構成部材である振動除去構造体の他の例を示す断面図であり、図４中、前述の実施の形態１（図１）と同一部分には同一符号を付し、その説明を省略する。なお、説明にあたっては前述の図３を参照するものとする。 Embodiment 2. FIG.
FIG. 4 is a schematic configuration diagram showing a washing tub inclined type washing machine to which the vibration reducing apparatus according to Embodiment 2 of the present invention is applied from the side, and FIG. 5 is a component of a second damper which is a main part thereof. FIG. 6 is a cross-sectional view showing another example of the vibration removal structure which is also a constituent member of the second damper. FIG. 4 shows the above-described embodiment. The same parts as those in FIG. 1 (FIG. 1) are denoted by the same reference numerals, and description thereof is omitted. In the description, reference is made to FIG.

図４に示すように、本実施形態の振動低減装置を用いた洗濯機１は、支持体９の下方にこの支持体９とのみ接続させて設置された第２のダンパ２１を、垂直荷重に対して弾性変形し易く、水平荷重に対しては抵抗力が大きい振動除去構造体と、この振動除去構造体を下方から支持する耐振構造体すなわち矩形リングプレート（図３）１４とから構成している。振動除去構造体は、図４及び図５のように天然ゴムに高分子または低分子制振材料を混ぜ合わせて樽状に成型した混合成型品２２と、混合成型品２２の樽状外周に設けたコイルばね２３とからなる２重振動除去構造となっているが、これに限るものでなく、例えば図６のように天然ゴムに高分子または低分子制振材料を混ぜ合わせて筒状に成型した混合成型品２２Ａと、混合成型品２２Ａの筒状内部空間に設けたコイルばね２３Ａとからなる２重振動除去構造としてもよい。それ以外の構成は、全て前述の実施形態１のものと同一であり、実施形態１のもつ機能を全て備えている。 As shown in FIG. 4, the washing machine 1 using the vibration reducing device according to the present embodiment is configured so that the second damper 21 installed only connected to the support 9 below the support 9 is subjected to a vertical load. On the other hand, it is composed of a vibration removal structure that is easily elastically deformed and has a large resistance against horizontal loads, and a vibration-resistant structure that supports the vibration removal structure from below, that is, a rectangular ring plate (FIG. 3) 14. Yes. As shown in FIGS. 4 and 5, the vibration removing structure is provided on a barrel-shaped outer periphery of a mixed molded product 22 formed by mixing natural rubber with a polymer or a low-molecular vibration damping material and molded into a barrel shape. However, the present invention is not limited to this. For example, as shown in FIG. 6, a polymer or a low-molecular vibration damping material is mixed with natural rubber and molded into a cylindrical shape. A double vibration elimination structure including the mixed molded product 22A and a coil spring 23A provided in the cylindrical inner space of the mixed molded product 22A may be employed. All other configurations are the same as those of the first embodiment described above, and all the functions of the first embodiment are provided.

本実施形態の振動低減装置においては、低い振動周波数成分は混合成型品２２又は２２Ａで吸収して熱減衰させ、高い周波数成分はコイルばね２３又は２３Ａで吸収して熱減衰させることができる。 In the vibration reducing device of the present embodiment, the low vibration frequency component can be absorbed and thermally attenuated by the mixed molded product 22 or 22A, and the high frequency component can be absorbed and thermally attenuated by the coil spring 23 or 23A.

また、洗濯槽３内の洗濯物が偏った状態で脱水運転を行う場合に発生するアンバランス振動時において、アンバランスで発生する偏心荷重による過渡的な大振動成分に対しても、混合成型品２２とコイルばね２３、又は混合成型品２２Ａとコイルばね２３Ａからなる２重の振動除去構造体により十分に吸収して熱減衰させることができる。 Also, in the case of unbalance vibration that occurs when the dehydration operation is performed when the laundry in the washing tub 3 is biased, the mixed molded product is also used for transient large vibration components due to eccentric load that occurs due to unbalance. It can be sufficiently absorbed and thermally damped by the double vibration removing structure composed of 22 and the coil spring 23 or the mixed molded product 22A and the coil spring 23A.

実施の形態３．
図７は本発明の実施の形態３に係る振動低減装置を適用した洗濯槽傾斜配置型の洗濯機を側方より示す概略構成図であり、図中、前述の実施の形態１（図１）と同一部分には同一符号を付し、その説明を省略する。 Embodiment 3 FIG.
FIG. 7 is a schematic configuration diagram showing the washing tub inclined arrangement type washing machine to which the vibration reducing device according to the third embodiment of the present invention is applied, from the side. The same parts are denoted by the same reference numerals, and the description thereof is omitted.

図７に示すように、本実施形態の振動低減装置を用いた洗濯機１は、支持体９の下方にこの支持体９とのみ接続させて設置された第２のダンパ３１が、垂直荷重に対して弾性変形し易く、水平荷重に対しては抵抗力が大きい振動除去構造体すなわち天然ゴムに高分子または低分子制振材料を混ぜ合わせて樽状に成型した混合成型品１２と、混合成型品１２を下方から支持するとともに、物入れや洗濯・脱水・乾燥工程に必要な機器を挿入設置可能な空間４０を形成する箱型の耐振構造体３２とからなり、箱型の耐振構造体３２の下面に接地部となる脚ゴム１５が装着されている。 As shown in FIG. 7, in the washing machine 1 using the vibration reducing device of the present embodiment, the second damper 31 installed only connected to the support 9 below the support 9 has a vertical load. On the other hand, a vibration-removing structure that is easily elastically deformed and has a high resistance to horizontal loads, that is, a mixed molded product 12 formed by mixing natural rubber with a polymer or low-molecular vibration damping material and molded into a barrel shape, and mixed molding The box-shaped vibration-proof structure 32 includes a box-type vibration-proof structure 32 that supports the product 12 from below and forms a space 40 in which equipment necessary for a container case, washing, dehydration, and drying processes can be inserted and installed. A leg rubber 15 serving as a grounding portion is attached to the lower surface.

また、箱型の耐振構造体３２には、その各縦枠３３と各横枠３４との接合部に、それぞれ制振および防振用ゴム３５が装着されているとともに、各縦枠３３と各横枠３４との間の各角部が、それぞれ鎹機能を持つコーナ補強部材３６によって補強されている。それ以外の構成は、全て前述の実施形態１のものと同一であり、実施形態１のもつ機能を全て備えている。 Further, the box-type vibration-proof structure 32 is provided with vibration damping and vibration-proof rubbers 35 at the joints between the vertical frames 33 and the horizontal frames 34, respectively. Each corner between the horizontal frame 34 is reinforced by a corner reinforcing member 36 having a hook function. All other configurations are the same as those of the first embodiment described above, and all the functions of the first embodiment are provided.

本実施形態の振動低減装置においては、空間４０を形成するための各縦枠３３と各横枠３４との間に制振及び防振用ゴム３５を挟み込み、更に各縦枠３３と各横枠３４との間のコーナ部に鎹機能を持つコーナ補強部材３６を設けることで、制振及び防振機能を有する箱型の耐振構造体３２の剛性を高めることができて、基礎部分が安定し、振動除去構造体すなわち混合成型品１２でも減衰できない振動成分を、空間４０を形成する各縦横枠体３３，３４や制振及び防振用ゴム３５で吸収し、制振することができるとともに、空間４０内への機器の設置が容易となる。 In the vibration reducing device of the present embodiment, the vibration damping and vibration isolating rubber 35 is sandwiched between each vertical frame 33 and each horizontal frame 34 for forming the space 40, and each vertical frame 33 and each horizontal frame. By providing the corner reinforcing member 36 having a saddle function at the corner between the box 34, the rigidity of the box-type vibration-proof structure 32 having the vibration damping and vibration isolating functions can be increased, and the foundation portion is stabilized. The vibration component that cannot be attenuated even by the vibration removal structure, that is, the mixed molded product 12, can be absorbed and suppressed by the vertical and horizontal frame bodies 33 and 34 and the vibration damping and vibration damping rubber 35 that form the space 40, and Installation of equipment in the space 40 is facilitated.

実施の形態４．
図８は本発明の実施の形態４に係る振動低減装置を適用した洗濯槽垂直配置型の洗濯機を側方より示す概略構成図であり、図中、前述の実施の形態１（図１）と同一部分には同一符号を付し、その説明を省略する。 Embodiment 4 FIG.
FIG. 8 is a schematic configuration diagram showing a washing tub vertical arrangement type washing machine to which the vibration reducing apparatus according to the fourth embodiment of the present invention is applied, from the side. The same parts are denoted by the same reference numerals, and the description thereof is omitted.

図８に示すように、本実施形態の振動低減装置を用いた洗濯機１Ａが、前述の実施の形態１と異なる点は、洗濯槽３Ａが縦に配置されている点であり、振動低減装置そのものの構成は前述の実施の形態１のものと同一である。 As shown in FIG. 8, the washing machine 1A using the vibration reducing device of the present embodiment is different from the above-described first embodiment in that the washing tub 3A is arranged vertically, and the vibration reducing device. The configuration itself is the same as that of the first embodiment.

縦型の洗濯槽１Ａは、洗濯槽３Ａが吊り棒８Ａで吊下支持される構造となっており、吊り棒８Ａで吊られた洗濯槽３Ａは吊り棒８Ａを介して筐体２に接続している。筐体２は支持体９と直結しており、支持体９の下方に、振動低減装置すなわち第２のダンパ１１が接続されている。 The vertical washing tub 1A has a structure in which the washing tub 3A is suspended and supported by the hanging rod 8A. The washing tub 3A suspended by the hanging rod 8A is connected to the housing 2 via the hanging rod 8A. ing. The housing 2 is directly connected to the support 9, and a vibration reducing device, that is, a second damper 11 is connected to the lower side of the support 9.

本実施形態の振動低減装置において、洗濯槽３Ａの回転に伴う振動は吊り棒８Ａを介して筐体２に伝播するが、洗濯槽２と吊り棒８Ａとの間には周知のばね材（図示せず）等が有り、ばね材の減衰機能により、洗濯槽２の振動は一旦減衰させられるようになっている。更に、第２のダンパ１１により、洗濯槽３Ａから筐体２を介して伝播する振動を強力に減衰させることができ、縦型の洗濯機３Ａであっても、床面への振動減衰を効果的に行うことができる。 In the vibration reducing device of the present embodiment, the vibration accompanying the rotation of the washing tub 3A propagates to the housing 2 via the suspension bar 8A, but a well-known spring material (see FIG. The vibration of the washing tub 2 is once damped by the damping function of the spring material. Further, the second damper 11 can strongly attenuate the vibration propagating from the washing tub 3A through the housing 2, and even the vertical washing machine 3A can effectively attenuate the vibration to the floor. Can be done automatically.

なお、前述の各実施形態では横振れに対する抵抗力を大きくするために、混合成型品を樽状または筒状に成型したものを例に挙げて説明したが、これに限るものでなく、要するに横振れに対する抵抗力を大きくしながら垂直方向の変位が容易となる形状であればよく、その条件に合うものであれば如何様な形状も採用可能である。 In each of the above-described embodiments, in order to increase the resistance to lateral vibration, the mixed molded product is molded and formed as a barrel or cylinder. However, the present invention is not limited to this. Any shape can be used as long as it can easily be displaced in the vertical direction while increasing the resistance to vibration, and any shape can be adopted as long as it meets the conditions.

また、前述の各実施形態では本発明を洗濯槽傾斜配置型や洗濯槽垂直配置型の洗濯機に本発明を適用したものを例に挙げて説明したが、洗濯槽水平配置型の洗濯機や洗濯機以外で筐体内に振動発生源となる可動体が設置される機器で振動成分を効果的に低減したい機種への本発明の適用が可能であることは言うまでもない。 Further, in each of the above-described embodiments, the present invention has been described with reference to an example in which the present invention is applied to a washing tub inclined arrangement type or a washing tub vertical arrangement type washing machine. Needless to say, the present invention can be applied to a device other than a washing machine in which a movable body serving as a vibration generation source is installed in a housing and in which a vibration component is desired to be effectively reduced.

本発明の実施の形態１に係る振動低減装置を適用した洗濯槽傾斜配置型の洗濯機を側方より示す概略構成図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows the washing tub inclination arrangement type washing machine to which the vibration reduction apparatus which concerns on Embodiment 1 of this invention is applied from a side. 本発明の実施の形態１に係る振動低減装置の要部である第２のダンパの構成部材である振動除去構造体を示す正面図である。It is a front view which shows the vibration removal structure which is a structural member of the 2nd damper which is the principal part of the vibration reduction apparatus which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る振動低減装置の要部である第２のダンパの構成部材である耐振構造体の上面図である。It is a top view of the vibration proof structure which is a structural member of the 2nd damper which is the principal part of the vibration reduction apparatus which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る振動低減装置を適用した洗濯槽傾斜配置型の洗濯機を側方より示す概略構成図である。It is a schematic block diagram which shows the washing tub inclination arrangement type washing machine to which the vibration reduction apparatus which concerns on Embodiment 2 of this invention is applied from a side. 本発明の実施の形態２に係る振動低減装置の要部である第２のダンパの構成部材である振動除去構造体の一例を示す正面図である。It is a front view which shows an example of the vibration removal structure which is a structural member of the 2nd damper which is the principal part of the vibration reduction apparatus which concerns on Embodiment 2 of this invention. 本発明の実施の形態２に係る振動低減装置の要部である第２のダンパの構成部材である振動除去構造体の他の例を示す断面図である。It is sectional drawing which shows the other example of the vibration removal structure which is a structural member of the 2nd damper which is the principal part of the vibration reduction apparatus which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る振動低減装置を適用した洗濯槽傾斜配置型の洗濯機を側方より示す概略構成図である。It is a schematic block diagram which shows the washing tub inclination arrangement type washing machine to which the vibration reduction apparatus which concerns on Embodiment 3 of this invention is applied from a side. 本発明の実施の形態４に係る振動低減装置を適用した洗濯槽垂直配置型の洗濯機を側方より示す概略構成図である。It is a schematic block diagram which shows the washing-tub vertical arrangement type washing machine to which the vibration reduction apparatus which concerns on Embodiment 4 of this invention is applied from a side.

符号の説明Explanation of symbols

１，１Ａ洗濯機、２筐体、３，３Ａ洗濯槽（可動体）、４第１のダンパ、９支持体、１１，２１，３１第２のダンパ、１２，２２樽状の混合成型品（振動除去構造体）、１３，３６コーナ補強部材、１４矩形リングプレート（耐振構造体）、１５脚ゴム（接地部）、２２Ａ筒状の混合成型品（振動除去構造体）、２３，２３Ａコイルばね（ばね材）、３２箱型の耐振構造体、３３縦枠、３４横枠、３５制振および防振用ゴム。
1, 1A washing machine, 2 housing, 3, 3A washing tub (movable body), 4 first damper, 9 support body, 11, 21, 31 second damper, 12, 22 barrel-shaped mixed molded product ( (Vibration eliminating structure), 13, 36 corner reinforcing member, 14 rectangular ring plate (vibration resistant structure), 15 leg rubber (grounding part), 22A cylindrical mixed molded product (vibration eliminating structure), 23, 23A coil spring (Spring material), 32 Box-shaped vibration-proof structure, 33 Vertical frame, 34 Horizontal frame, 35 Rubber for vibration control and vibration isolation.

Claims

筐体内に支持体を固定し、該支持体に第１のダンパを介して振動発生源となる可動体を支持させるとともに、該支持体を第２のダンパに支持させたことを特徴とする振動低減装置。 A vibration characterized in that a support is fixed in a housing, and a movable body as a vibration generation source is supported by the support via a first damper, and the support is supported by a second damper. Reduction device.

前記振動発生源となる可動体は、洗濯機の筐体内に吊下支持されるとともに下方より前記第１のダンパにて支持された水平配置、垂直配置、又は傾斜配置の洗濯槽であり、該第１のダンパは、前記筐体に固定された支持体上に設置されており、該支持体の下方に該支持体とのみ接続させて前記第２のダンパが配置されてなることを特徴とする請求項１記載の振動低減装置。 The movable body serving as the vibration generation source is a washing tub in a horizontal arrangement, a vertical arrangement, or an inclined arrangement that is suspended and supported in a casing of a washing machine and supported by the first damper from below, The first damper is installed on a support fixed to the casing, and the second damper is disposed below the support and connected only to the support. The vibration reducing device according to claim 1.

前記第２のダンパは、前記支持体の下面に接続され、垂直荷重に対して弾性変形し易く、水平荷重に対しては抵抗力が大きい振動除去構造体と、該振動除去構造体を下方から支持する耐振構造体とからなることを特徴とする請求項２記載の振動低減装置。 The second damper is connected to the lower surface of the support, is easily elastically deformed with respect to a vertical load, and has a large resistance against a horizontal load, and the vibration removal structure from below. The vibration reducing device according to claim 2, comprising a vibration-proof structure to be supported.

前記振動除去構造体は、天然ゴムに高分子または低分子制振材料を混ぜ合わせて樽状に成型した混合成型品からなることを特徴とする請求項３記載の振動低減装置。 4. The vibration reducing apparatus according to claim 3, wherein the vibration removing structure is made of a mixed molded product obtained by mixing natural rubber with a polymer or a low-molecular vibration damping material and molding it into a barrel shape.

前記振動除去構造体は、天然ゴムに高分子または低分子制振材料を混ぜ合わせて樽状または筒状に成型した混合成型品と、該混合成型品の樽状外周または筒状内部空間に設けたばね材とからなることを特徴とする請求項３記載の振動低減装置。 The vibration elimination structure is provided in a mixed molded product obtained by mixing a natural rubber with a polymer or a low-molecular vibration damping material and molded into a barrel shape or a cylindrical shape, and a barrel-shaped outer periphery or a cylindrical inner space of the mixed molded product. The vibration reducing device according to claim 3, wherein the vibration reducing device comprises a spring material.

前記混合成型品は、その固有振動周波数の値が、前記洗濯槽の固有振動周波数の値よりも低くかつ該洗濯槽と共振しない振動周波数帯域内にあるように成型されてなることを特徴とする請求項４又は請求項５記載の振動低減装置。 The mixed molded product is molded such that the value of its natural vibration frequency is lower than the value of the natural vibration frequency of the washing tub and is in a vibration frequency band that does not resonate with the washing tub. The vibration reducing device according to claim 4 or 5.

前記耐振構造体は、四隅が鎹機能を持つコーナ補強部材によって補強された矩形リングプレートからなり、その下面に接地部となる脚ゴムが装着されてなることを特徴とする請求項３乃至請求項６のいずれかに記載の振動低減装置。 The said vibration-proof structure consists of a rectangular ring plate reinforced by a corner reinforcing member having four corners, and a leg rubber as a grounding portion is mounted on the lower surface thereof. 6. The vibration reducing device according to any one of 6.

前記耐振構造体は、箱型に構成され、その下面に接地部となる脚ゴムが装着されてなることを特徴とする請求項３乃至請求項６のいずれかに記載の振動低減装置。 The vibration reducing device according to any one of claims 3 to 6, wherein the vibration-proof structure is configured in a box shape, and a leg rubber serving as a grounding portion is attached to a lower surface thereof.

前記箱型に構成した耐振構造体の各縦枠と各横枠との接合部に、それぞれ制振および防振用ゴムを装着したことを特徴とする請求項８記載の振動低減装置。 9. The vibration reducing device according to claim 8, wherein vibration damping and vibration isolating rubbers are respectively attached to the joints between the vertical frames and the horizontal frames of the box-shaped vibration-proof structure.

前記箱型に構成した耐振構造体の各縦枠と各横枠との間の各角部を、それぞれ鎹機能を持つコーナ補強部材によって補強したことを特徴とする請求項８又は請求項９記載の振動低減装置。
10. The corner portion between each vertical frame and each horizontal frame of the vibration-proof structure configured in the box shape is reinforced by a corner reinforcing member having a hook function, respectively. Vibration reduction device.