JP2013227872A - Mounting structure for sound insulation cover - Google Patents
Mounting structure for sound insulation cover Download PDFInfo
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- JP2013227872A JP2013227872A JP2012098477A JP2012098477A JP2013227872A JP 2013227872 A JP2013227872 A JP 2013227872A JP 2012098477 A JP2012098477 A JP 2012098477A JP 2012098477 A JP2012098477 A JP 2012098477A JP 2013227872 A JP2013227872 A JP 2013227872A
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Abstract
Description
本発明は、自動車等のエンジン、排気管等の騒音発生源の近傍に設置される遮音カバーを騒音発生源に取り付ける遮音カバーの取付構造に関する。 The present invention relates to a sound insulation cover mounting structure for attaching a sound insulation cover installed in the vicinity of a noise generation source such as an engine of an automobile or an exhaust pipe to the noise generation source.
自動車等は、エンジンが稼動すると、エンジン本体、オイルパン、排気管などが振動し、騒音を発生させる。この騒音対策として、騒音発生源の近傍に遮音カバーを設置することが行われている。しかし、騒音発生源への遮音カバーの取り付け状態によっては、遮音カバーが激しく振動し、騒音の発生源になる場合がある。また、遮音カバーの振動が非常に大きい場合には、遮音カバーが疲労破壊する場合もある。 In an automobile or the like, when the engine is operated, the engine body, the oil pan, the exhaust pipe, and the like vibrate and generate noise. As a noise countermeasure, a sound insulation cover is installed in the vicinity of the noise generation source. However, depending on the state of attachment of the sound insulation cover to the noise generation source, the sound insulation cover may vibrate vigorously and become a noise generation source. In addition, if the vibration of the sound insulation cover is very large, the sound insulation cover may break down due to fatigue.
そこで、上記問題を解決するために、遮音カバーを弾性支持し、遮音カバーへの振動伝達を低減させることで、遮音カバーの振動を低減させる方法が各種提案されている。しかし、エンジン周辺の耐熱性が必要とされる場所では、ゴム、発泡剤等の弾性体を防振に使用することができない。そこで、耐熱性が必要とされる場所では、コイルばねや板ばねといった金属ばねを使用することが提案されている。 In order to solve the above problem, various methods for reducing the vibration of the sound insulation cover by elastically supporting the sound insulation cover and reducing the transmission of vibration to the sound insulation cover have been proposed. However, in places where heat resistance around the engine is required, an elastic body such as rubber or foaming agent cannot be used for vibration isolation. Therefore, it has been proposed to use a metal spring such as a coil spring or a leaf spring in a place where heat resistance is required.
特許文献１には、振動源に固定されるカラー部材と、カラー部材の外径よりも大きな内径を有してカラー部材の周囲に配置され、防振遮熱板本体部と嵌合する嵌合部材とを、バネ状部材で連結した緩衝ワッシャ部材が開示されている。 In Patent Document 1, a collar member fixed to a vibration source and a fitting that has an inner diameter larger than the outer diameter of the collar member and is arranged around the collar member and is fitted to the vibration-proof and heat-insulating plate main body. A buffer washer member in which members are connected by a spring-like member is disclosed.
ところで、騒音発生源と遮音カバーとの間のばねのばね定数を小さくするほど、遮音カバーへの振動伝達が低減し、遮音カバーの振動が低減する。しかし、ばねのばね定数を小さくすると、遮音カバーの自重や、ばねの可動範囲の増大により、遮音カバーと騒音発生源とが接触して、振動低減性能が大幅に悪化する場合がある。 By the way, as the spring constant of the spring between the noise generation source and the sound insulation cover is reduced, the vibration transmission to the sound insulation cover is reduced, and the vibration of the sound insulation cover is reduced. However, if the spring constant of the spring is reduced, the sound insulation cover may come into contact with the noise generating source due to the weight of the sound insulation cover or the movable range of the spring increases, and the vibration reduction performance may be greatly deteriorated.
本発明の目的は、遮音カバーと騒音発生源とが接触することで振動低減性能が悪化するのを防止することが可能な遮音カバーの取付構造を提供することである。 An object of the present invention is to provide a sound insulation cover mounting structure capable of preventing deterioration of vibration reduction performance due to contact between a sound insulation cover and a noise generation source.
本発明における遮音カバーの取付構造は、騒音発生源の近傍に設置した遮音カバーをばねを介して前記騒音発生源に取り付ける遮音カバーの取付構造であって、前記遮音カバーに設けられて当該遮音カバーと前記騒音発生源との間に位置し、前記遮音カバーが前記騒音発生源に近接した際に、前記騒音発生源に当接する当接ばねを有することを特徴とする。 The sound insulating cover mounting structure in the present invention is a sound insulating cover mounting structure in which a sound insulating cover installed in the vicinity of a noise generating source is attached to the noise generating source via a spring, and is provided on the sound insulating cover. And a contact spring that contacts the noise generation source when the sound insulation cover comes close to the noise generation source.
上記の構成によれば、遮音カバーが騒音発生源に近接した際に、当接ばねが騒音発生源に当接することで、遮音カバーと騒音発生源との接触が回避される。これにより、騒音発生源と遮音カバーとの間のばねのばね定数を小さくしても、遮音カバーと騒音発生源とが接触することがないので、振動低減性能が悪化するのを防止することができる。 According to said structure, when a sound insulation cover adjoins a noise generation source, a contact spring contacts a noise generation source, and a contact with a sound insulation cover and a noise generation source is avoided. As a result, even if the spring constant of the spring between the noise generation source and the sound insulation cover is reduced, the sound insulation cover and the noise generation source do not come into contact with each other. it can.
また、本発明における遮音カバーの取付構造において、前記当接ばねは、前記騒音発生源側の端に近い箇所ほど剛性が低くされていてよい。上記の構成によれば、当接ばねの剛性を、騒音発生源側の端に近い箇所ほど低くすることで、当接ばねは剛性が低い箇所から先に騒音発生源に当接する。これにより、当接ばねが騒音発生源に当接した際の衝撃を緩和することができる。そして、遮音カバーと騒音発生源との距離が近くなるほど、騒音発生源に当接した当接ばねの反力は大きくなる。これにより、遮音カバーと騒音発生源との距離が近くなるほど大きな反力で両者を離隔させることができて、遮音カバーと騒音発生源との接触を好適に回避することができる。 In the sound insulation cover mounting structure according to the present invention, the abutment spring may have a lower rigidity at a location closer to the end on the noise generation source side. According to the above configuration, the contact spring comes into contact with the noise generation source first from a location with low rigidity by reducing the rigidity of the contact spring closer to the end on the noise generation source side. Thereby, the impact when the contact spring contacts the noise generation source can be reduced. And the reaction force of the contact spring which contact | abutted to the noise generation source becomes large, so that the distance of a sound insulation cover and a noise generation source becomes short. Thereby, as the distance between the sound insulation cover and the noise generation source becomes closer, the two can be separated by a larger reaction force, and the contact between the sound insulation cover and the noise generation source can be suitably avoided.
また、本発明における遮音カバーの取付構造において、前記当接ばねは、前記遮音カバーの一部を切り欠くことで形成されていてよい。上記の構成によれば、当接ばねを、遮音カバーの一部を切り欠いて形成することで、コストアップを抑制することができる。 In the sound insulation cover mounting structure according to the present invention, the contact spring may be formed by cutting out a part of the sound insulation cover. According to said structure, a cost increase can be suppressed by forming a contact spring by notching a part of sound-insulation cover.
本発明の遮音カバーの取付構造によると、騒音発生源と遮音カバーとの間のばねのばね定数を小さくしても、遮音カバーと騒音発生源とが接触することがないので、振動低減性能が悪化するのを防止することができる。 According to the mounting structure of the sound insulation cover of the present invention, even if the spring constant of the spring between the noise generation source and the sound insulation cover is reduced, the sound insulation cover and the noise generation source do not come into contact with each other. Deterioration can be prevented.
以下、本発明の好適な実施の形態について、図面を参照しつつ説明する。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
［第１実施形態］
（遮音カバーの取付構造の構成）
本発明の第１実施形態による遮音カバーの取付構造（取付構造）１は、図１に示すように、振動して騒音を発生させる騒音発生源であるエンジン１１の近傍に設置される遮音カバー２１をばねを介してエンジン１１に取り付けるものである。なお、騒音発生源はエンジン１１に限定されず、オイルパンや排気管などであってよい。遮音カバー２１は、取付構造１によりエンジン１１に取り付けられて、エンジン１１の一部を覆っている。なお、遮音カバー２１は騒音発生源の一部を覆うものに限定されず、全部を覆うものであってもよい。
[First Embodiment]
(Configuration of soundproof cover mounting structure)
The sound insulation cover mounting structure (mounting structure) 1 according to the first embodiment of the present invention, as shown in FIG. 1, is a sound insulation cover 21 installed in the vicinity of an engine 11 that is a noise generating source that vibrates and generates noise. Is attached to the engine 11 via a spring. The noise generation source is not limited to the engine 11 and may be an oil pan, an exhaust pipe, or the like. The sound insulation cover 21 is attached to the engine 11 by the attachment structure 1 and covers a part of the engine 11. The sound insulation cover 21 is not limited to covering a part of the noise generation source, and may cover the whole.
取付構造１は、図２に示すように、ボルト（結合部材）２と、一対のばね３，３と、当接ばね４とを有している。ボルト２は、遮音カバー２１が有する開口部２１ａを貫通して、エンジン１１の凸部１１ａに穿孔された雌ネジ部１１ｂと螺合する雄ネジ部（結合部）２ａと、雄ネジ部２ａよりも大径な頭部２ｂとを備えている。なお、エンジン１１と結合される結合部材はボルト２に限定されず、ピンやビス等であってもよい。 As shown in FIG. 2, the mounting structure 1 includes a bolt (coupling member) 2, a pair of springs 3 and 3, and a contact spring 4. The bolt 2 passes through an opening 21a of the sound insulating cover 21, and includes a male screw part (coupling part) 2a that is screwed with a female screw part 11b that is drilled in the convex part 11a of the engine 11, and a male screw part 2a. Is also provided with a large-diameter head 2b. The coupling member coupled to the engine 11 is not limited to the bolt 2 and may be a pin, a screw, or the like.
一対のばね３，３は、ボルト２の雄ネジ部２ａが挿通するコイルばねであって、ボルト２の頭部２ｂと遮音カバー２１との間、および、遮音カバー２１とエンジン１１の凸部１１ａとの間にそれぞれ設けられており、遮音カバー２１がエンジン１１に近接する方向、および、エンジン１１から遠ざかる方向に移動可能なように、遮音カバー２１を挟持している。遮音カバー２１のエンジン１１に近接する方向およびエンジン１１から遠ざかる方向への振動は、一対のばね３，３により吸収されることとなる。 The pair of springs 3 and 3 are coil springs through which the male screw portion 2 a of the bolt 2 is inserted, and are between the head portion 2 b of the bolt 2 and the sound insulating cover 21, and between the sound insulating cover 21 and the convex portion 11 a of the engine 11. The sound insulation cover 21 is sandwiched so that the sound insulation cover 21 can move in a direction close to the engine 11 and a direction away from the engine 11. The vibration of the sound insulation cover 21 in the direction approaching the engine 11 and the direction away from the engine 11 is absorbed by the pair of springs 3 and 3.
当接ばね４は、断面コ字状の板ばねであって、遮音カバー２１に設けられて遮音カバー２１とエンジン１１の凸部１１ａとの間に位置している。具体的には、当接ばね４は、開口部２１ａの近傍において、開口部２１ａを中心に９０°の間隔で遮音カバー２１にビスなどで４つ取り付けられており、それぞれが遮音カバー２１とエンジン１１の凸部１１ａとの間に位置している。そして、当接ばね４は、遮音カバー２１がエンジン１１に近接する方向に揺れた際に、エンジン１１の凸部１１ａに当接可能である。具体的には、当接ばね４は、遮音カバー２１がエンジン１１の凸部１１ａから所定距離ａ以内に近接した際に、エンジン１１の凸部１１ａに当接する。 The contact spring 4 is a leaf spring having a U-shaped cross section, and is provided on the sound insulation cover 21 and located between the sound insulation cover 21 and the convex portion 11 a of the engine 11. Specifically, four contact springs 4 are attached to the sound insulation cover 21 with screws or the like at intervals of 90 ° around the opening 21a in the vicinity of the opening 21a. It is located between the 11 convex portions 11a. The abutment spring 4 can abut against the convex portion 11 a of the engine 11 when the sound insulation cover 21 is swung in a direction approaching the engine 11. Specifically, the contact spring 4 contacts the convex portion 11a of the engine 11 when the sound insulating cover 21 comes close to the convex portion 11a of the engine 11 within a predetermined distance a.
当接ばね４は、図３に示すように、エンジン１１側の端に向かって先細りの形状に形成されることで、エンジン１１側の端に近い箇所ほど剛性が低くされている。そのため、当接ばね４は剛性が低い箇所から先にエンジン１１の凸部１１ａに当接する。そして、遮音カバー２１とエンジン１１の凸部１１ａとの距離が近くなるほど、エンジン１１の凸部１１ａに当接した当接ばね４の反力は大きくなる。 As shown in FIG. 3, the contact spring 4 is formed in a tapered shape toward the end on the engine 11 side, so that the portion closer to the end on the engine 11 side has lower rigidity. Therefore, the contact spring 4 comes into contact with the convex portion 11a of the engine 11 first from a portion having low rigidity. And the reaction force of the contact spring 4 which contact | abutted to the convex part 11a of the engine 11 becomes large, so that the distance of the sound insulation cover 21 and the convex part 11a of the engine 11 becomes short.
以上の構成において、一対のばね３，３で挟持された遮音カバー２１がエンジン１１の凸部１１ａから所定距離ａ以内に近接した際に、当接ばね４がエンジン１１の凸部１１ａに当接することで、遮音カバー２１とエンジン１１の凸部１１ａとの接触が回避される。これにより、一対のばね３，３のばね定数を小さくしても、遮音カバー２１とエンジン１１の凸部１１ａとが接触することがないので、振動低減性能が悪化するのを防止することができる。 In the above configuration, when the sound insulation cover 21 sandwiched between the pair of springs 3 and 3 comes within a predetermined distance a from the convex portion 11 a of the engine 11, the contact spring 4 contacts the convex portion 11 a of the engine 11. Thus, contact between the sound insulating cover 21 and the convex portion 11a of the engine 11 is avoided. Thereby, even if the spring constants of the pair of springs 3 and 3 are reduced, the sound insulation cover 21 and the convex portion 11a of the engine 11 do not come into contact with each other. .
また、当接ばね４の剛性を、エンジン１１側の端に近い箇所ほど低くすることで、当接ばね４は剛性が低い箇所から先にエンジン１１の凸部１１ａに当接する。これにより、当接ばね４がエンジン１１の凸部１１ａに当接した際の衝撃を緩和することができる。そして、遮音カバー２１とエンジン１１の凸部１１ａとの距離が近くなるほど、エンジン１１の凸部１１ａに当接した当接ばね４の反力は大きくなる。これにより、遮音カバー２１とエンジン１１の凸部１１ａとの距離が近くなるほど大きな反力で両者を離隔させることができて、遮音カバー２１とエンジン１１の凸部１１ａとの接触を好適に回避することができる。 Further, by lowering the rigidity of the contact spring 4 toward the end closer to the engine 11 side, the contact spring 4 comes into contact with the convex portion 11a of the engine 11 first from a position where the rigidity is low. Thereby, the impact when the contact spring 4 contacts the convex portion 11a of the engine 11 can be reduced. And the reaction force of the contact spring 4 which contact | abutted to the convex part 11a of the engine 11 becomes large, so that the distance of the sound insulation cover 21 and the convex part 11a of the engine 11 becomes short. Thereby, as the distance between the sound insulating cover 21 and the convex portion 11a of the engine 11 becomes shorter, the two can be separated by a larger reaction force, and the contact between the sound insulating cover 21 and the convex portion 11a of the engine 11 is preferably avoided. be able to.
（騒音評価）
次に、当接ばね４を設けずに遮音カバー２１とエンジン１１の凸部１１ａとが接触する場合と、当接ばね４を設けて遮音カバー２１とエンジン１１の凸部１１ａとが接触しない場合とで、遮音カバー２１の直上における騒音を評価した。その結果を図４に示す。当接ばね４を設けて遮音カバー２１とエンジン１１の凸部１１ａとの接触を回避した場合、２０００〜２５００Ｈｚの周波数帯において騒音の低下がみられた。
(Noise evaluation)
Next, when the sound insulation cover 21 and the convex part 11a of the engine 11 are in contact with each other without providing the contact spring 4, and when the sound insulation cover 21 and the convex part 11a of the engine 11 are not in contact with each other. The noise immediately above the sound insulation cover 21 was evaluated. The result is shown in FIG. When the contact spring 4 was provided to avoid contact between the sound insulating cover 21 and the convex portion 11a of the engine 11, noise was reduced in the frequency band of 2000 to 2500 Hz.
（効果）
以上に述べたように、本実施形態に係る取付構造１によると、一対のばね３，３で挟持された遮音カバー２１がエンジン１１の凸部１１ａに近接した際に、当接ばね４がエンジン１１の凸部１１ａに当接することで、遮音カバー２１とエンジン１１の凸部１１ａとの接触が回避される。これにより、一対のばね３，３のばね定数を小さくしても、遮音カバー２１とエンジン１１の凸部１１ａとが接触することがないので、振動低減性能が悪化するのを防止することができる。
(effect)
As described above, according to the mounting structure 1 according to the present embodiment, when the sound insulating cover 21 sandwiched between the pair of springs 3 and 3 comes close to the convex portion 11a of the engine 11, the contact spring 4 is The contact between the sound insulating cover 21 and the projecting portion 11a of the engine 11 is avoided by abutting on the 11 projecting portions 11a. As a result, even if the spring constants of the pair of springs 3 and 3 are reduced, the sound insulation cover 21 and the convex portion 11a of the engine 11 do not come into contact with each other, so that deterioration of the vibration reduction performance can be prevented. .
また、当接ばね４の剛性を、エンジン１１側の端に近い箇所ほど低くすることで、当接ばね４は剛性が低い箇所から先にエンジン１１の凸部１１ａに当接する。これにより、当接ばね４がエンジン１１の凸部１１ａに当接した際の衝撃を緩和ることができる。そして、遮音カバー２１とエンジン１１の凸部１１ａとの距離が近くなるほど、エンジン１１の凸部１１ａに当接した当接ばね４の反力は大きくなる。これにより、遮音カバー２１とエンジン１１の凸部１１ａとの距離が近くなるほど大きな反力で両者を離隔させることができて、遮音カバー２１とエンジン１１の凸部１１ａとの接触を好適に回避することができる。 Further, by lowering the rigidity of the contact spring 4 toward the end closer to the engine 11 side, the contact spring 4 comes into contact with the convex portion 11a of the engine 11 first from a position where the rigidity is low. Thereby, the impact when the contact spring 4 contacts the convex portion 11a of the engine 11 can be reduced. And the reaction force of the contact spring 4 which contact | abutted to the convex part 11a of the engine 11 becomes large, so that the distance of the sound insulation cover 21 and the convex part 11a of the engine 11 becomes short. Thereby, as the distance between the sound insulating cover 21 and the convex portion 11a of the engine 11 becomes shorter, the two can be separated by a larger reaction force, and the contact between the sound insulating cover 21 and the convex portion 11a of the engine 11 is preferably avoided. be able to.
［第２実施形態］
（遮音カバーの取付構造の構成）
次に、本発明の第２実施形態に係る取付構造２０１について説明する。なお、上述した構成要素と同じ構成要素については、同じ参照番号を付してその説明を省略する。本実施形態の取付構造２０１が第１実施形態の取付構造１と異なる点は、図５に示すように、当接ばね２０４が、遮音カバー２１の一部を切り欠くことで形成されている点である。
[Second Embodiment]
(Configuration of soundproof cover mounting structure)
Next, the attachment structure 201 according to the second embodiment of the present invention will be described. In addition, about the same component as the component mentioned above, the same reference number is attached | subjected and the description is abbreviate | omitted. The attachment structure 201 of this embodiment is different from the attachment structure 1 of the first embodiment in that the contact spring 204 is formed by cutting out a part of the sound insulation cover 21 as shown in FIG. It is.
上面図である図６に示すように、当接ばね２０４は、遮音カバー２１の開口部２１ａの近傍において、開口部２１ａを中心に９０°の間隔で遮音カバー２１の一部を切り欠いて、切り欠き部をそれぞれ断面Ｌ字状に折り曲げることで、遮音カバー２１に４つ形成されている。このような構成であれば、当接ばねとなる部材を別途用意して、遮音カバー２１に取り付ける必要がないので、コストアップが抑制される。 As shown in FIG. 6 which is a top view, the contact spring 204 is formed by cutting out a part of the sound insulation cover 21 at intervals of 90 ° around the opening 21a in the vicinity of the opening 21a of the sound insulation cover 21. Four notches are formed in the sound insulation cover 21 by bending each of the notches into an L-shaped cross section. With such a configuration, it is not necessary to separately prepare a member to be a contact spring and attach it to the sound insulating cover 21, so that an increase in cost is suppressed.
（効果）
以上に述べたように、本実施形態に係る取付構造２０１によると、当接ばね２０４を、遮音カバー２１の一部を切り欠いて形成することで、コストアップを抑制することができる。
(effect)
As described above, according to the mounting structure 201 according to the present embodiment, the contact spring 204 is formed by cutting out a part of the sound insulating cover 21, thereby suppressing an increase in cost.
（本実施形態の変形例）
以上、本発明の実施形態を説明したが、具体例を例示したに過ぎず、特に本発明を限定するものではなく、具体的構成などは、適宜設計変更可能である。また、発明の実施の形態に記載された、作用及び効果は、本発明から生じる最も好適な作用及び効果を列挙したに過ぎず、本発明による作用及び効果は、本発明の実施の形態に記載されたものに限定されるものではない。
(Modification of this embodiment)
The embodiment of the present invention has been described above, but only specific examples are illustrated, and the present invention is not particularly limited, and the specific configuration and the like can be appropriately changed in design. Further, the actions and effects described in the embodiments of the invention only list the most preferable actions and effects resulting from the present invention, and the actions and effects according to the present invention are described in the embodiments of the present invention. It is not limited to what was done.
１，２０１ 取付構造
２ ボルト（結合部材）
２ａ 雄ネジ部（結合部）
２ｂ 頭部
３ 一対のねじ
４，２０４ 当接ねじ
１１ エンジン
１１ａ 凸部
１１ｂ 雌ネジ部
２１ 遮音カバー
２１ａ 開口部
1,201 Mounting structure 2 Bolt (coupling member)
2a Male thread part (joint part)
2b Head 3 Pair of screws 4,204 Contact screw 11 Engine 11a Convex 11b Female thread 21 Sound insulation cover 21a Opening
Claims (3)
前記遮音カバーに設けられて当該遮音カバーと前記騒音発生源との間に位置し、前記遮音カバーが前記騒音発生源に近接した際に、前記騒音発生源に当接する当接ばねを有することを特徴とする遮音カバーの取付構造。 A sound insulation cover mounting structure for attaching a sound insulation cover installed in the vicinity of a noise generation source to the noise generation source via a spring,
A contact spring provided on the sound insulation cover, located between the sound insulation cover and the noise generation source, and contacting the noise generation source when the sound insulation cover is close to the noise generation source; The characteristic sound insulation cover mounting structure.
The sound insulation cover mounting structure according to claim 1 or 2, wherein the contact spring is formed by cutting out a part of the sound insulation cover.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012098477A JP5792674B2 (en) | 2012-04-24 | 2012-04-24 | Sound insulation cover mounting structure |
| CN201310077459.7A CN103375252B (en) | 2012-04-24 | 2013-03-12 | Hide the mounting construction of sound cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012098477A JP5792674B2 (en) | 2012-04-24 | 2012-04-24 | Sound insulation cover mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2013227872A true JP2013227872A (en) | 2013-11-07 |
| JP5792674B2 JP5792674B2 (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012098477A Active JP5792674B2 (en) | 2012-04-24 | 2012-04-24 | Sound insulation cover mounting structure |
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| Country | Link |
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| JP (1) | JP5792674B2 (en) |
| CN (1) | CN103375252B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909417A (en) * | 2021-09-30 | 2022-01-11 | 湖北致合通机械有限公司 | Large-tonnage cold forging hydraulic press mould noise reduction device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973215B (en) * | 2019-03-26 | 2019-11-08 | 江苏台普动力机械有限公司 | A kind of diesel engine unit of mute cooling function |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2739944C2 (en) * | 1977-09-05 | 1982-09-16 | Motorenfabrik Hatz Gmbh & Co Kg, 8399 Ruhstorf | Noise-absorbing casing for an internal combustion engine |
| JPS6228545A (en) * | 1985-07-30 | 1987-02-06 | Mitsubishi Steel Mfg Co Ltd | Vibration-proof support device |
| JPH11223166A (en) * | 1998-02-06 | 1999-08-17 | Nok Megulastik Co Ltd | Manifold mounting structure |
| JP4398222B2 (en) * | 2003-10-29 | 2010-01-13 | ニチアス株式会社 | Anti-vibration heat shield |
| JP4472325B2 (en) * | 2003-12-25 | 2010-06-02 | 三和パッキング工業株式会社 | Shock absorber |
| JP2005337097A (en) * | 2004-05-26 | 2005-12-08 | Tokai Rubber Ind Ltd | Sound-insulation cover |
| DE102009012383A1 (en) * | 2009-03-09 | 2010-09-23 | Federal-Mogul Sealing Systems Gmbh | Temperature Schwingungsentkoppelelement |
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2012
- 2012-04-24 JP JP2012098477A patent/JP5792674B2/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909417A (en) * | 2021-09-30 | 2022-01-11 | 湖北致合通机械有限公司 | Large-tonnage cold forging hydraulic press mould noise reduction device |
| CN113909417B (en) * | 2021-09-30 | 2023-07-21 | 湖北致合通机械有限公司 | Noise reduction device for large-tonnage cold forging hydraulic press die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103375252A (en) | 2013-10-30 |
| JP5792674B2 (en) | 2015-10-14 |
| CN103375252B (en) | 2016-03-16 |
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