JP5191950B2 - Vibration isolator - Google Patents

Vibration isolator Download PDF

Info

Publication number
JP5191950B2
JP5191950B2 JP2009121022A JP2009121022A JP5191950B2 JP 5191950 B2 JP5191950 B2 JP 5191950B2 JP 2009121022 A JP2009121022 A JP 2009121022A JP 2009121022 A JP2009121022 A JP 2009121022A JP 5191950 B2 JP5191950 B2 JP 5191950B2
Authority
JP
Japan
Prior art keywords
shell
mounting bracket
vibration
peripheral
vibration isolator
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.)
Expired - Fee Related
Application number
JP2009121022A
Other languages
Japanese (ja)
Other versions
JP2010270784A (en
Inventor
英明 島津
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.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
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 Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP2009121022A priority Critical patent/JP5191950B2/en
Publication of JP2010270784A publication Critical patent/JP2010270784A/en
Application granted granted Critical
Publication of JP5191950B2 publication Critical patent/JP5191950B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Combined Devices Of Dampers And Springs (AREA)

Description

本発明は、自動車のエンジンや排気管などの高温の振動源を防振的に支持するのに用いられる防振装置に関するものである。   The present invention relates to an anti-vibration device used for anti-vibration support of a high-temperature vibration source such as an automobile engine or an exhaust pipe.

従来、例えば、エンジンなどの高温の振動源をその振動が車体に伝達されないように支承するマウントとして、車体側に取り付けられる筒状の第１取付金具と、その軸芯部上方に配されて振動源側に取り付けられる第２取付金具と、これら取付金具間に介設されて両者を連結するゴム弾性体からなる防振基体とを備えた防振装置が知られている。   Conventionally, for example, as a mount for supporting a high-temperature vibration source such as an engine so that the vibration is not transmitted to the vehicle body, a cylindrical first mounting bracket that is attached to the vehicle body side, and a vibration that is disposed above the shaft core portion. There is known a vibration isolator including a second mounting bracket attached to the source side, and a vibration isolation base made of a rubber elastic body interposed between the mounting brackets to connect the two mounting brackets.

上記第２取付金具としては、一般に中実状のボス金具が用いられている。そのため、エンジンなどの熱源からの熱が第２取付金具を介してゴム弾性体である防振基体に繰り返し入力されやすく、防振基体の耐久性に影響を与える。   As the second mounting bracket, a solid boss bracket is generally used. For this reason, heat from a heat source such as an engine is likely to be repeatedly input to the vibration isolating base that is a rubber elastic body via the second mounting bracket, which affects the durability of the vibration isolating base.

ところで、下記特許文献１には、シリンダヘッドの排気ポートについて、脱炭処理により融点を高められた表層部を有しかつその内側を融点差を利用して溶融流出させることで中空の空気断熱層とした二重殻構造をなす鋳鉄製の排気ポートが開示されている。この技術を防振装置に適用して第２取付金具を中空化することが考えられる。しかしながら、この中空化技術は、中空部を作り出すために２度の熱処理を行い、流出孔を閉じるための溶接も必要となるので、コストが非常に高くなる。また、この技術では、肉厚の管理が難しく、熱処理に数十時間を必要とするため製造時間も非常に長い。   By the way, the following Patent Document 1 discloses a hollow air heat insulating layer having a surface layer portion whose melting point is increased by decarburization processing and melting and flowing the inside of the exhaust port of the cylinder head using a difference in melting point. An exhaust port made of cast iron having a double shell structure is disclosed. It is conceivable to apply this technique to a vibration isolator to make the second mounting bracket hollow. However, this hollowing technique requires two heat treatments in order to create a hollow portion, and requires welding to close the outflow hole, so that the cost becomes very high. In addition, with this technique, it is difficult to manage the wall thickness, and several tens of hours are required for the heat treatment, so the manufacturing time is very long.

なお、下記特許文献２及び３には、防振装置においてエンジン側に取り付けられる取付金具を、上金具と下金具を両者の周縁部同士で接合することで中空状に形成することが開示されている。しかしながら、これらの文献において、エンジン側の取付金具を中空状に形成しているのは、同取付金具の内部にダイヤフラムによって区画形成された液室を設けるためであり、防振基体への断熱効果については何ら開示されていない。また、構造的にも、これらの文献のものでは、上記取付金具の中空部は、ダイヤフラムの上側に区画形成された空気室が通孔を通じて外気と連通されており、あるいはまた、少なくともダイヤフラムの下側に区画形成された液室が、防振基体が室壁の一部を構成する主液室に対してオリフィス流路を介して連通されている。そのため、該取付金具は密閉された中空状をなすものはなく、よって、該取付金具の空気室内に外部から水が侵入したり、内蔵されたダイヤフラムの熱劣化などの問題を伴う。   The following Patent Documents 2 and 3 disclose that the mounting bracket attached to the engine side in the vibration isolator is formed in a hollow shape by joining the upper bracket and the lower bracket at the peripheral portions thereof. Yes. However, in these documents, the mounting bracket on the engine side is formed in a hollow shape in order to provide a liquid chamber partitioned and formed by a diaphragm inside the mounting bracket. There is no disclosure about. Further, structurally, in these documents, in the hollow portion of the mounting bracket, the air chamber defined on the upper side of the diaphragm communicates with the outside air through the through hole, or at least below the diaphragm. The liquid chamber partitioned and formed on the side is communicated with the main liquid chamber in which the vibration isolating base forms a part of the chamber wall via the orifice channel. For this reason, the mounting bracket does not have a hermetically sealed hollow shape. Therefore, there is a problem that water enters the air chamber of the mounting bracket from the outside or the built-in diaphragm is thermally deteriorated.

特開２００８−２１５３３１号公報JP 2008-215331 A 特開平１０−１８４７６９号公報JP-A-10-184769 特開２０００−２８３２１４号公報JP 2000-283214 A

本発明は、上記問題点を改善し、コスト低減と工程削減、品質の安定化を図りつつ、高温の振動源から防振基体への熱の伝達を抑えて防振基体の耐久性を向上することができる防振装置を提供することを目的とする。   The present invention improves the above-mentioned problems and improves the durability of the anti-vibration substrate by suppressing the transfer of heat from the high-temperature vibration source to the anti-vibration substrate while reducing the cost, reducing the process, and stabilizing the quality. An object of the present invention is to provide an anti-vibration device that can be used.

本発明に係る防振装置は、車体側に取り付けられる第１取付金具と、高温の振動源側に取り付けられる第２取付金具と、前記第１取付金具と前記第２取付金具の間に介設されて両者を連結するゴム弾性体からなる防振基体とを備えた防振装置において、前記第２取付金具は、第１殻体と第２殻体を両者の周縁部同士で接合することにより密閉された中空状をなして中空部が空気室に形成されたものである。   The vibration isolator according to the present invention includes a first mounting bracket attached to the vehicle body side, a second mounting bracket attached to the high-temperature vibration source side, and interposed between the first mounting bracket and the second mounting bracket. And the anti-vibration device including the anti-vibration base made of a rubber elastic body for connecting the two, the second mounting bracket is formed by joining the first shell and the second shell at the peripheral portions thereof. A hermetically sealed hollow shape is formed and a hollow portion is formed in the air chamber.

本発明によれば、高温の振動源側に取り付けられる第２取付金具が密閉された中空状をなして中空部が空気室に形成されているので、振動源から防振基体への熱伝達が緩やかになる。そのため、振動源からの熱の繰り返し入力に対する防振基体への負荷が緩和されることにより、防振基体の劣化を遅らせることができ、耐久性の向上による製品品質の向上が可能となる。   According to the present invention, the second mounting bracket attached to the high temperature vibration source side forms a sealed hollow shape and the hollow portion is formed in the air chamber. Be gentle. Therefore, by reducing the load on the vibration isolating substrate with respect to repeated input of heat from the vibration source, it is possible to delay the deterioration of the vibration isolating substrate and to improve the product quality by improving the durability.

また、この第２取付金具の中空部は、第１殻体と第２殻体という複数の部材を接合することにより形成されるものであり、上記特許文献１のような中空鋳鉄の製造技術によるものではないので、製造の簡略化と時間短縮を実現することができてコスト低減が図られると共に、肉厚管理も容易で品質向上にもつながる。   Further, the hollow portion of the second mounting bracket is formed by joining a plurality of members such as a first shell and a second shell, and is based on the hollow cast iron manufacturing technique as described in Patent Document 1 above. Therefore, the manufacturing can be simplified and the time can be shortened, the cost can be reduced, the wall thickness can be easily controlled, and the quality can be improved.

第１実施形態に係る防振装置の縦断面図Longitudinal sectional view of the vibration isolator according to the first embodiment 第２実施形態に係る防振装置の縦断面図Longitudinal sectional view of the vibration isolator according to the second embodiment

図１を参照して第１実施形態に係る防振装置１０について説明する。この防振装置１０は、自動車のエンジンを支承するエンジンマウントであり、車体側に取り付けられる筒状をなす下側の第１取付金具１２と、高温の振動源であるエンジン側に取り付けられる上側の第２取付金具１４と、これら両取付金具１２，１４の間に介設されて両者を連結するゴム弾性体からなる防振基体１６とを備えてなる。   The vibration isolator 10 according to the first embodiment will be described with reference to FIG. The vibration isolator 10 is an engine mount that supports an automobile engine, and includes a lower first mounting bracket 12 that forms a cylindrical shape that is attached to the vehicle body side, and an upper side that is attached to the engine side that is a high-temperature vibration source. The second mounting bracket 14 is provided with a vibration-proof base 16 made of a rubber elastic body that is interposed between the mounting brackets 12 and 14 and connects them.

第２取付金具１４は、第１取付金具１２の軸芯部上方に配されたボス金具であり、上端部には取付ボルト１８が上向きに突設されて、このボルト１８を介してエンジン側に取り付けられるよう構成されている。   The second mounting bracket 14 is a boss bracket that is disposed above the axial center portion of the first mounting bracket 12, and a mounting bolt 18 projects upward from the upper end portion of the first mounting bracket 12. It is configured to be attached.

第１取付金具１２は、防振基体１６が加硫成形される筒状金具２０と、その下端部に連結される有底筒状をなす底筒金具２２とからなり、筒状金具２０および／または底筒金具２４の外周に付設される不図示のブラケットにより車体側に取付けられるよう構成されている。筒状金具２０は、その下端部が底筒金具２２の上端開口部に対し、かしめ部２４によりかしめ固定されている。   The first mounting bracket 12 includes a cylindrical metal fitting 20 in which the vibration-isolating base 16 is vulcanized and a bottom cylindrical metal fitting 22 having a bottomed cylindrical shape connected to a lower end portion thereof. Or it is comprised so that it may attach to the vehicle body side by the bracket not shown attached to the outer periphery of the bottom cylinder metal fitting 24. FIG. The lower end portion of the cylindrical metal fitting 20 is caulked and fixed to the upper end opening of the bottom cylindrical metal fitting 22 by a caulking portion 24.

防振基体１６は、略傘状に形成され、その上部に第２取付金具１４が埋設された状態に加硫接着され、下端外周部が筒状金具２０の上端開口部に加硫接着されている。防振基体１６の下端部には、筒状金具２０の内周面を覆うシールゴム層２６が連なっている。   The anti-vibration base 16 is formed in a substantially umbrella shape, vulcanized and bonded with the second mounting bracket 14 embedded in the upper portion thereof, and the lower end outer peripheral portion is vulcanized and bonded to the upper end opening of the cylindrical bracket 20. Yes. A seal rubber layer 26 covering the inner peripheral surface of the cylindrical metal fitting 20 is connected to the lower end portion of the vibration isolation base 16.

第１取付金具１２には、防振基体１６の下面に対して軸方向Ｘに対向配置されて防振基体１６との間に液体封入室２８を形成する可撓性ゴム膜からなる第１ダイヤフラム３０が取り付けられ、液体封入室２８に液体が封入されている。第１ダイヤフラム３０は、外周部に環状の補強金具３０Ａを備え、該補強金具３０Ａを介して上記かしめ部２４に固定されている。   The first mounting member 12 includes a first diaphragm made of a flexible rubber film that is disposed so as to face the lower surface of the vibration isolating base 16 in the axial direction X and forms a liquid sealing chamber 28 with the vibration isolating base 16. 30 is attached, and liquid is sealed in the liquid sealing chamber 28. The first diaphragm 30 includes an annular reinforcing metal fitting 30A on the outer peripheral portion, and is fixed to the caulking portion 24 via the reinforcing metal fitting 30A.

液体封入室２８は、仕切り体３２によって、防振基体１６が室壁の一部をなす上側の主液室２８Ａと、第１ダイヤフラム３０が室壁の一部をなす下側の副液室２８Ｂとに仕切られている。なお、主液室２８Ａと副液室２８Ｂは、後述のオリフィス流路を通じて互いに連通されている。   The liquid sealing chamber 28 is divided by the partition body 32 into an upper main liquid chamber 28A in which the vibration isolation base 16 forms part of the chamber wall, and a lower sub liquid chamber 28B in which the first diaphragm 30 forms part of the chamber wall. It is divided into and. The main liquid chamber 28A and the sub liquid chamber 28B are communicated with each other through an orifice channel described later.

第１ダイヤフラム３０と底筒金具２２の底部との間には第２ダイヤラム３４が設けられており、第１ダイヤフラム３０と第２ダイヤフラム３４の間が底筒金具２２の胴部に有する通気孔３６を通じて大気に開放された平衡室３８とされている。また、第２ダイヤフラム３４と底筒金具２２の底部の間が大気圧と負圧の選択導入が可能な切替室４０とされている。この切替室４０は、切替用連通管４１を通じて外部の切替バルブ（図示せず）により大気圧導入状態と負圧導入状態に切替られて、その容積を変化させるようになっている。なお、平衡室３８は、副液室２８Ｂと切替室４０との圧力差を緩和する働きを持つ。   A second diaphragm 34 is provided between the first diaphragm 30 and the bottom portion of the bottom tube fitting 22, and a ventilation hole 36 provided in the body portion of the bottom tube fitting 22 between the first diaphragm 30 and the second diaphragm 34. The equilibrium chamber 38 is opened to the atmosphere through. Further, a switching chamber 40 capable of selectively introducing atmospheric pressure and negative pressure is formed between the second diaphragm 34 and the bottom of the bottom tube fitting 22. The switching chamber 40 is switched between an atmospheric pressure introduction state and a negative pressure introduction state by an external switching valve (not shown) through a switching communication pipe 41 to change its volume. The equilibrium chamber 38 has a function of relaxing the pressure difference between the sub liquid chamber 28B and the switching chamber 40.

仕切り体３２は、筒状金具２０の内側にシールゴム層２６を介して嵌着されており、その下面に当接配置されたリング板状の仕切り受板４２を用いて第１取付金具１２内に保持されている。仕切り体３２は、アルミニウムその他の金属材や剛性樹脂材その他の剛性材料による成形体よりなり、外周部に筒状金具２０との間で周方向に延びる外側オリフィス流路４４を形成するとともに、その内側に仕切り受板４２との間で周方向に延びる内側オリフィス流路４６を形成する。   The partition body 32 is fitted inside the cylindrical metal fitting 20 via the seal rubber layer 26, and is used in the first mounting metal fitting 12 by using a ring plate-like partition receiving plate 42 disposed in contact with the lower surface thereof. Is retained. The partition body 32 is made of a molded body made of aluminum or other metal material, rigid resin material, or other rigid material, and forms an outer orifice channel 44 extending in the circumferential direction between the outer peripheral portion and the cylindrical metal fitting 20. An inner orifice channel 46 extending in the circumferential direction between the partition receiving plate 42 and the inner side is formed inside.

外側オリフィス流路４４は、この例では、車両走行時のシェイク振動を減衰するために、シェイク振動に対応した低周波数域（例えば、１０〜１５Ｈｚ程度）にチューニングされている。詳細には、外側オリフィス流路４４は、略２周にわたる長さを持ち、連通部４４Ａ，４４Ｂを通じて主液室２８Ａ及び副液室２８Ｂにそれぞれ連通されている。   In this example, the outer orifice channel 44 is tuned to a low frequency range (for example, about 10 to 15 Hz) corresponding to the shake vibration in order to attenuate the shake vibration during vehicle travel. Specifically, the outer orifice channel 44 has a length that extends over approximately two rounds, and communicates with the main liquid chamber 28A and the sub liquid chamber 28B through the communication portions 44A and 44B.

内側オリフィス流路４６は、外側オリフィス流路４４よりも高周波数域（例えば、２０〜４０Ｈｚ程度のアイドリング振動）にチューニングされたオリフィス流路であり、仕切り体３２に設けられた連通部４６Ａと、仕切り受板４２の中央部に設けられた連通部４６Ｂとを通じて主液室２８Ａと副液室２８Ｂにそれぞれ連通されている。   The inner orifice channel 46 is an orifice channel tuned to a higher frequency region (for example, idling vibration of about 20 to 40 Hz) than the outer orifice channel 44, and a communication portion 46A provided in the partition body 32; The main liquid chamber 28 </ b> A and the sub liquid chamber 28 </ b> B are communicated with each other through a communication portion 46 </ b> B provided in the central portion of the partition receiving plate 42.

この実施形態では、内側オリフィス流路４６は副液室２８Ｂ側の連通部４６Ｂが、第１ダイヤフラム３０の中央部に有する弁体３０Ｂにより開閉されるよう構成されている。詳細には、弁体３０Ｂは、仕切り受板４２の下面に当接することでその中央部の連通部４６Ｂを閉塞できるように構成されている。また、第２ダイヤフラム３４は、弁体３０Ｂを平衡室３８側から仕切り体３２側に押圧するための略キャップ状をなす押圧補助部材３４Ａを有する。切替室４０内における押圧補助部材３４Ａの内側には、第１ダイヤフラム３０の弁体３０Ｂを、押圧補助部材３４Ａを介して仕切り体３２側に押圧させるスプリング等の付勢手段４８が設けられている。これにより、切替室４０の大気圧導入時には、付勢手段４８による付勢力で弁体３０Ｂを仕切り体３２に押圧できて、連通部４６Ｂを塞ぐことにより内側オリフィス流路４６での液流動を阻止でき、また、切替室４０の負圧導入時には、付勢手段４８の付勢力に抗して弁体３０Ｂが降下することにより仕切り体３２から離脱して、内側オリフィス流路４６が開放され、主液室２８Ａと副液室２８Ｂとが連通するようになっている。   In this embodiment, the inner orifice channel 46 is configured such that the communication portion 46B on the side of the sub liquid chamber 28B is opened and closed by a valve body 30B provided at the center of the first diaphragm 30. Specifically, the valve body 30B is configured to be able to close the communication portion 46B at the center by contacting the lower surface of the partition receiving plate 42. The second diaphragm 34 includes a pressing auxiliary member 34A having a substantially cap shape for pressing the valve body 30B from the equilibrium chamber 38 side to the partition body 32 side. An urging means 48 such as a spring for pressing the valve body 30B of the first diaphragm 30 toward the partition body 32 via the pressing auxiliary member 34A is provided inside the pressing auxiliary member 34A in the switching chamber 40. . Thereby, when the atmospheric pressure is introduced into the switching chamber 40, the valve body 30B can be pressed against the partition body 32 by the urging force of the urging means 48, and the liquid flow in the inner orifice channel 46 is prevented by closing the communication portion 46B. In addition, when the negative pressure is introduced into the switching chamber 40, the valve body 30B descends against the biasing force of the biasing means 48, so that the valve body 30B is separated from the partition body 32, and the inner orifice channel 46 is opened. The liquid chamber 28A and the sub liquid chamber 28B communicate with each other.

上記の構成を持つ防振装置１０において、本実施形態のものでは、エンジン側に取り付けられる第２取付金具１４が密閉された中空状をなして中空部が空気室５０に形成されていることを特徴とする。詳細には、第２取付金具１４は、エンジン側に固定される上側の第１殻体５２と、防振基体１６が加硫接着された下側の第２殻体５４とからなり、両者をその周縁部５２Ａ，５４Ａ同士で接合することにより、内部に密閉された空気室５０を形成してなる。   In the vibration isolator 10 having the above configuration, in the present embodiment, the second mounting bracket 14 attached to the engine side forms a sealed hollow shape, and the hollow portion is formed in the air chamber 50. Features. Specifically, the second mounting bracket 14 is composed of an upper first shell 52 fixed to the engine side and a lower second shell 54 to which the vibration-proof base 16 is vulcanized and bonded. By joining the peripheral portions 52A and 54A to each other, an air chamber 50 sealed inside is formed.

第１殻体５２は、この例では、円柱状のボス金具であり、エンジン側への取付ボルト１８が上方に向けて突設されている。そして、第１殻体５２の周縁部５２Ａは、円柱状をなす第１殻体５２の本体部５２Ｂの下端から、その全周にわたって径方向外方Ｋｏにフランジ状に張り出し形成されている。   In this example, the first shell body 52 is a cylindrical boss metal fitting, and the mounting bolt 18 to the engine side projects upward. And the peripheral part 52A of the 1st shell 52 is extended and formed in the flange shape at radial direction outward Ko over the perimeter from the lower end of the main-body part 52B of the 1st shell 52 which makes | forms a column shape.

第２殻体５４は、この例では、底壁部５４Ｂと該底壁部５４Ｂの周縁から逆テーパ状に広がる側壁部５４Ｃとからなるカップ状金具である。そして、第２殻体５４の周縁部５４Ａは、側壁部５４Ｃの上端開口縁が、その全周にわたって径方向外方Ｋｏにフランジ状に張り出し形成されることで、第１殻体５２の周縁部５２Ａの下面に重ね合わされるよう形成されている。   In this example, the second shell 54 is a cup-shaped metal fitting that includes a bottom wall portion 54B and a side wall portion 54C that spreads in an inversely tapered manner from the periphery of the bottom wall portion 54B. Then, the peripheral edge portion 54A of the second shell body 54 is formed such that the upper end opening edge of the side wall portion 54C is formed in a flange shape so as to protrude radially outwardly over the entire periphery thereof. It is formed so as to overlap the lower surface of 52A.

第１殻体５２の周縁部５２Ａと第２殻体５４の周縁部５４Ａとは、全周にわたって溶接されることで互いに接合されている。符号５６が周縁部同士の接合部であり、符号５８が溶接部である。ここで、仮に溶接部を周方向で断続状に設けると、溶接部は非溶接部に対して熱が伝達しやすいことから周方向で熱伝達にムラが生じるので、溶接部５６は全周にわたって形成されていることが好ましい。   The peripheral edge 52A of the first shell 52 and the peripheral edge 54A of the second shell 54 are joined to each other by welding over the entire circumference. Reference numeral 56 is a joint between peripheral portions, and reference numeral 58 is a welded portion. Here, if the welded portion is provided intermittently in the circumferential direction, heat is easily transmitted to the non-welded portion in the welded portion, so unevenness in heat transfer occurs in the circumferential direction. Preferably it is formed.

詳細には、この例では、第１殻体５２の周縁部５２Ａの先端において第２殻体５４との重ね合わせ側の角部が傾斜面状に切除され、また、第２殻体５４の周縁部５４Ａの先端において第１殻体５２との重ね合わせ側の角部が傾斜面状に切除されることにより、両者の重ね合わせ部に断面三角形状の凹みが形成され、この凹みを埋めるように溶接されることで断面三角形状の溶接部５６が形成されている。   Specifically, in this example, the corner on the side overlapping with the second shell 54 is cut into an inclined surface at the tip of the peripheral portion 52A of the first shell 52, and the periphery of the second shell 54 The corner on the overlapping side with the first shell body 52 is cut into an inclined surface at the tip of the portion 54A, so that a recess having a triangular cross section is formed in the overlapping portion of both, so that the recess is filled. A welded portion 56 having a triangular cross section is formed by welding.

このようにして第１殻体５２と第２殻体５４を接合することにより、第２取付金具１４は密閉された中空状に形成されており、すなわち、中空部の空気室５０は、外気とは連通されておらず、また第１取付金具１２の内側の液体封入室２８とも連通されておらず、ダイヤフラムも内蔵されていない。   By joining the first shell body 52 and the second shell body 54 in this way, the second mounting bracket 14 is formed in a sealed hollow shape, that is, the air chamber 50 in the hollow portion is separated from the outside air. Are not communicated with each other, are not communicated with the liquid sealing chamber 28 inside the first mounting bracket 12, and no diaphragm is incorporated.

第１殻体５２と第２殻体５４の接合部５６は、第２取付金具１４において、径方向外方Ｋｏに向けてフランジ状に突出した形状をなしている。そして、この接合部５６が、防振基体１６から連なるゴム弾性体からなるストッパゴム部６０に埋設されることで、ストッパ部６２が構成されている。ストッパ部６２は、車体側に設けられた不図示のストッパ金具によってその外周及び上方が取り囲まれており、第２取付金具１４の径方向及び上方への相対変位に対して、ストッパ部６２がストッパゴム部６０を介して前記ストッパ金具に当接することにより、その過大変位が制限されるように構成されている。   The joint 56 between the first shell 52 and the second shell 54 has a shape protruding in a flange shape toward the radially outward Ko in the second mounting bracket 14. The joining portion 56 is embedded in a stopper rubber portion 60 made of a rubber elastic body that is continuous with the vibration-isolating base 16, thereby forming a stopper portion 62. The stopper portion 62 is surrounded by a stopper fitting (not shown) provided on the vehicle body side so that the outer periphery and the upper portion thereof are surrounded. The stopper portion 62 is a stopper against the relative displacement in the radial direction and the upward direction of the second mounting bracket 14. By contacting the stopper fitting through the rubber part 60, the excessive displacement is limited.

以上よりなる本実施形態の防振装置１０であると、第２取付金具１４の密閉された空気室５０による断熱効果により、エンジンから防振基体１６への熱伝達が緩やかになり、すなわち熱の伝達を遅らせることができる。そのため、エンジンからの熱の周期的な入力に対する防振基体１６への負荷が緩和されるので、防振基体１６の劣化を遅らせることができ、耐久性を向上することができる。   With the vibration isolator 10 of the present embodiment configured as described above, heat transfer from the engine to the vibration isolator base 16 becomes gentle due to the heat insulating effect of the sealed air chamber 50 of the second mounting bracket 14, that is, heat Transmission can be delayed. As a result, the load on the vibration isolating substrate 16 with respect to the periodic input of heat from the engine is relieved, so that the deterioration of the vibration isolating substrate 16 can be delayed and the durability can be improved.

また、この中空状の第２取付金具１４は、第１殻体５２と第２殻体５４との２部材を溶接によって接合するという簡略な方法で形成することができるので、中空鋳鉄の製造技術を利用する場合に比べて、コスト低減及び製造時間の短縮を実現することができ、また肉厚管理も容易である。   The hollow second mounting bracket 14 can be formed by a simple method of joining two members of the first shell body 52 and the second shell body 54 by welding. Compared with the case of using, it is possible to realize cost reduction and shortening of manufacturing time, and thickness management is also easy.

また、第２取付金具１４の中空部は密閉された空気室５０であるので、外部空間からの水の侵入を防止することができ、また中空部にダイヤフラムや液室を組み込むものではないので、ダイヤフラムの熱劣化などの問題もなく、製造も容易である。   In addition, since the hollow portion of the second mounting bracket 14 is a sealed air chamber 50, water can be prevented from entering from the external space, and a diaphragm or a liquid chamber is not incorporated into the hollow portion. There is no problem such as thermal deterioration of the diaphragm, and the manufacturing is easy.

また、第１殻体５２と第２殻体５４の接合部５６がストッパゴム部６０に埋設されているので、溶接部５８における気密性を高めて、空気室５０の密閉度を高めることができる。また、エンジンの荷重を常時支える防振基体１６と異なり、ストッパゴム部６０は通常時には荷重が負荷されておらず、熱劣化が問題となりにくいので、この部分を利用して接合部５６を被覆することにより、耐久性の悪化を伴うことなく、接合部５６の気密性を高め、ストッパ部６２を構成することができる。   In addition, since the joint portion 56 between the first shell body 52 and the second shell body 54 is embedded in the stopper rubber portion 60, the airtightness of the welded portion 58 can be improved and the degree of sealing of the air chamber 50 can be increased. . In addition, unlike the anti-vibration base 16 that always supports the engine load, the stopper rubber portion 60 is not normally loaded and is unlikely to be subject to thermal degradation. Therefore, this portion is used to cover the joint portion 56. Thereby, the airtightness of the joining part 56 can be improved and the stopper part 62 can be comprised, without accompanying deterioration of durability.

図２は、第２実施形態に係る防振装置１０Ａを示したものである。この実施形態は、第２取付金具１４の構成が上記第１実施形態とは異なる。   FIG. 2 shows a vibration isolator 10A according to the second embodiment. This embodiment is different from the first embodiment in the configuration of the second mounting bracket 14.

すなわち、この例では、第１殻体５２の周縁部５２Ａを本体部５２Ｂの下端（軸方向Ｘの一端）から径方向外方Ｋｏにフランジ状に張り出し形成した上で、本体部５２Ｂの下面（軸方向Ｘの端面）には、該周縁部５２Ａの径方向内側に、下方、すなわち第２殻体５４側に開かれた嵌合凹所６４が設けられている。一方、第２殻体５４の周縁部５４Ａは、この実施形態では、上記逆テーパ状の側壁部５４Ｃの上端から上方に向けて外径一定のストレート筒状に延設されている。そして、この第２殻体５４の周縁部５４Ａが嵌合凹所５４に内嵌されており、これにより第１殻体５２と第２殻体５４の周縁部５２Ａ，５４Ａ同士が接合されている。より詳細には、第１殻体５２と第２殻体５４の周縁部５２Ａ，５４Ａは、全周にわたって溶接５８されることで接合されている。   That is, in this example, the peripheral edge portion 52A of the first shell body 52 is formed so as to protrude from the lower end (one end in the axial direction X) of the main body portion 52B in a flange shape in a flange shape, and then the lower surface ( A fitting recess 64 opened downward, that is, on the second shell 54 side, is provided on the radially inner side of the peripheral edge portion 52A. On the other hand, in this embodiment, the peripheral edge portion 54A of the second shell 54 extends in a straight cylindrical shape having a constant outer diameter from the upper end of the reverse tapered side wall portion 54C upward. And the peripheral part 54A of this 2nd shell 54 is fitted in the fitting recess 54, and the peripheral parts 52A and 54A of the 1st shell 52 and the 2nd shell 54 are joined by this. . More specifically, the peripheral portions 52A and 54A of the first shell body 52 and the second shell body 54 are joined by welding 58 over the entire circumference.

そして、このようにして形成された接合部５６が、第１実施形態と同様に、防振基体１６から連なるゴム弾性体からなるストッパゴム部６０に埋設されることで、ストッパ部６２が構成されている。   And the joining part 56 formed in this way is embedded in a stopper rubber part 60 made of a rubber elastic body continuous from the vibration isolating base 16 as in the first embodiment, so that the stopper part 62 is configured. ing.

この実施形態では、ストッパ部６２による変位規制効果を規定する剛体が第１殻体５２の周縁部５２Ａのみで規定されるので、変位規制効果の設定バラツキを抑えることができる。その他の構成は、第１実施形態と同様であり、同様の作用効果が奏される。   In this embodiment, since the rigid body that defines the displacement regulation effect by the stopper 62 is defined only by the peripheral portion 52A of the first shell 52, the setting variation of the displacement regulation effect can be suppressed. Other configurations are the same as those of the first embodiment, and the same operational effects are achieved.

なお、上記実施形態では、第１殻体５２と第２殻体５４の周縁部５２Ａ，５４Ａの接合を溶接により行っているが、本発明はこれに限定されることなく、リベット止め、ネジ止め、圧入、螺合など種々の接合方法を採用可能である。また、上記実施形態では、第２取付金具１４を第１殻体５２と第２殻体５４との２つの金具を組み合わせることで形成したが、３つ以上の金具を組み合わせることで密閉された中空状に形成してもよい。また、上記実施形態では、切替式の液封入式防振装置について説明したが、第１取付金具１２内の構造は特に限定されるものではなく、各種の液封入式防振装置に適用可能であり、また、液体封入室を持たない防振装置にも適用可能である。また、エンジンマウントには限られず、例えば排気管などの熱源となる高温の振動源を支持する各種防振装置に適用可能である。その他、本発明の趣旨を逸脱しない限り、種々の変更が可能である。   In the above embodiment, the peripheral portions 52A and 54A of the first shell 52 and the second shell 54 are joined by welding. However, the present invention is not limited to this, and riveting and screwing are performed. Various joining methods such as press-fitting and screwing can be employed. Moreover, in the said embodiment, although the 2nd attachment metal fitting 14 was formed by combining two metal fittings, the 1st shell 52 and the 2nd shell 54, the hollow sealed by combining three or more metal fittings You may form in a shape. In the above-described embodiment, the switchable liquid-filled vibration isolator has been described. However, the structure inside the first mounting bracket 12 is not particularly limited, and can be applied to various liquid-filled vibration-proof devices. In addition, the present invention is also applicable to a vibration isolator that does not have a liquid enclosure. Further, the present invention is not limited to an engine mount, and can be applied to various types of vibration isolation devices that support a high-temperature vibration source serving as a heat source such as an exhaust pipe. In addition, various modifications can be made without departing from the spirit of the present invention.

１０，１０Ａ…防振装置、１２…第１取付金具、１４…第２取付金具、１６…防振基体
５０…空気室、５２…第１殻体、５２Ａ…第１殻体の周縁部、５２Ｂ…第１殻体の本体部
５４…第２殻体、５４Ａ…第２殻体の周縁部、５６…接合部、６０…ストッパゴム部
６４…嵌合凹所、Ｘ…軸方向、Ｋｏ…径方向外方 DESCRIPTION OF SYMBOLS 10,10A ... Vibration isolator, 12 ... 1st attachment metal fitting, 14 ... 2nd attachment metal fitting, 16 ... Anti-vibration base | substrate 50 ... Air chamber, 52 ... 1st shell, 52A ... Peripheral part of 1st shell, 52B The first shell body 54 is the second shell 54A is the peripheral edge of the second shell 56 is the joint 60 the stopper rubber 64 is the fitting recess X is the axial direction Ko is the diameter Direction

Claims (4)

車体側に取り付けられる第１取付金具と、高温の振動源側に取り付けられる第２取付金具と、前記第１取付金具と前記第２取付金具の間に介設されて両者を連結するゴム弾性体からなる防振基体とを備えた防振装置において、
前記第２取付金具は、第１殻体と第２殻体を両者の周縁部同士で接合することにより密閉された中空状をなして中空部が空気室に形成されたことを特徴とする防振装置。 A first mounting bracket that is mounted on the vehicle body side, a second mounting bracket that is mounted on the high-temperature vibration source side, and a rubber elastic body that is interposed between the first mounting bracket and the second mounting bracket and connects the two. In a vibration isolating apparatus comprising a vibration isolating substrate comprising:
The second mounting bracket has a hermetically sealed hollow shape formed by joining the first shell body and the second shell body at the peripheral edges thereof, and the hollow portion is formed in the air chamber. Shaker. 前記第１取付金具が筒状をなし、前記第２取付金具が前記第１取付金具の軸芯部に配されており、前記第２取付金具は、前記振動源側に固定される前記第１殻体と、前記防振基体が接着される前記第２殻体とを、両者の周縁部同士で接合することにより、内部に密閉された前記空気室を形成してなることを特徴とする請求項１記載の防振装置。   The first mounting bracket has a cylindrical shape, the second mounting bracket is disposed on an axial center portion of the first mounting bracket, and the second mounting bracket is fixed to the vibration source side. The air chamber sealed inside is formed by joining the shell and the second shell to which the vibration isolating substrate is bonded to each other at the peripheral portions thereof. Item 1. A vibration isolator according to item 1. 前記第１殻体と前記第２殻体との接合部が前記防振基体から連なるゴム弾性体からなるストッパゴム部に埋設されたことを特徴とする請求項２記載の防振装置。   The vibration isolator according to claim 2, wherein a joint portion between the first shell body and the second shell body is embedded in a stopper rubber portion made of a rubber elastic body connected to the vibration isolation base. 前記第１殻体の周縁部が当該第１殻体の本体部から径方向外方にフランジ状に張り出し形成され、該周縁部の径方向内側に前記第２殻体側に開かれた嵌合凹所が設けられて、前記第２殻体の周縁部が前記嵌合凹所に内嵌されることで、前記第１殻体と前記第２殻体の周縁部同士が接合されたことを特徴とする請求項３記載の防振装置。   The peripheral edge of the first shell is formed in a flange-like shape so as to protrude radially outward from the main body of the first shell, and the fitting recess is opened radially inward of the peripheral edge toward the second shell. A peripheral portion of the second shell is fitted into the fitting recess so that the peripheral portions of the first shell and the second shell are joined to each other. The vibration isolator according to claim 3.
JP2009121022A 2009-05-19 2009-05-19 Vibration isolator Expired - Fee Related JP5191950B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009121022A JP5191950B2 (en) 2009-05-19 2009-05-19 Vibration isolator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009121022A JP5191950B2 (en) 2009-05-19 2009-05-19 Vibration isolator

Publications (2)

Publication Number Publication Date
JP2010270784A JP2010270784A (en) 2010-12-02
JP5191950B2 true JP5191950B2 (en) 2013-05-08

Family

ID=43418988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009121022A Expired - Fee Related JP5191950B2 (en) 2009-05-19 2009-05-19 Vibration isolator

Country Status (1)

Country Link
JP (1) JP5191950B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5907785B2 (en) * 2012-04-09 2016-04-26 住友理工株式会社 Engine mount
CN109790901A (en) 2016-09-27 2019-05-21 株式会社普利司通 Antihunting device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03119635U (en) * 1990-03-23 1991-12-10
JP3740980B2 (en) * 2000-12-13 2006-02-01 東海ゴム工業株式会社 Fluid-filled vibration isolator and manufacturing method thereof
JP3846310B2 (en) * 2002-01-11 2006-11-15 東海ゴム工業株式会社 Fluid filled vibration isolator and method for manufacturing fluid filled vibration isolator

Also Published As

Publication number Publication date
JP2010270784A (en) 2010-12-02

Similar Documents

Publication Publication Date Title
JP2510903B2 (en) Fluid-filled mount device and manufacturing method thereof
US8430373B2 (en) Fluid-filled type vibration damping device
JP3603651B2 (en) Manufacturing method of fluid filled type vibration damping device
JPWO2003008838A1 (en) Switchable liquid filled type vibration damping device
JP2007232207A (en) Fluid-sealed vibration isolating device and its manufacturing process
JPH11264436A (en) Fluid-filled vibration isolator
JP2003120745A (en) Vibration control device
JP5191950B2 (en) Vibration isolator
JP6761318B2 (en) Anti-vibration device
US6863269B2 (en) Fluid filled vibration damping device
JP5060196B2 (en) Diaphragm
JP4187137B2 (en) Liquid-filled vibration isolator
JP2007205437A (en) Fluid filled vibration absorbing device
JP6707430B2 (en) Anti-vibration device
JP2019070402A (en) Vibration isolation device
JP2014085003A (en) Fluid sealed type vibration control device
JP2011064258A (en) Vibration control device
JP2001140971A (en) Fluid sealed vibration control device and manufacturing method for it
JP4173607B2 (en) Liquid-filled vibration isolator
JP2007198541A (en) Fluid-sealed vibration isolating device
JP2001200884A (en) Fulid sealing vibration isolating device
JP4230891B2 (en) Liquid-filled vibration isolator
JP2003161341A (en) Liquid sealed vibration control device
JP2019027484A (en) Fluid encapsulated vibration prevention device and manufacturing method of fluid encapsulated vibration prevention device
JP2005106152A (en) Fluid enclosed vibration damper and method of manufacturing the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20111130

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20121001

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130122

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130130

R150 Certificate of patent or registration of utility model

Ref document number: 5191950

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20160208

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees