JP2014025516A - Vibration isolating connection rod and method for manufacturing the same - Google Patents

Vibration isolating connection rod and method for manufacturing the same Download PDF

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JP2014025516A
JP2014025516A JP2012165308A JP2012165308A JP2014025516A JP 2014025516 A JP2014025516 A JP 2014025516A JP 2012165308 A JP2012165308 A JP 2012165308A JP 2012165308 A JP2012165308 A JP 2012165308A JP 2014025516 A JP2014025516 A JP 2014025516A
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rod
vibration
rubber elastic
curing agent
bush
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JP5916552B2 (en
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Akira Oji
章 大路
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Sumitomo Riko Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a vibration isolating connection rod with a novel structure and a method for manufacturing the same, which can achieve greatly lightened weight while ensuring sufficient strength with the number of components reduced and simple manufacturing.SOLUTION: A vibration isolating connection rod 10 includes a first attaching part 12 and a second attaching part 14, mutually connected by a longitudinal shaped connection part 16, and at least one of the first attaching part 12 and the second attaching part 14 is formed with a vibration isolating bush. The connection part 16 and outer cylindrical members 20 (26) of the vibration isolating bushes 12 (14) are integrally molded as a rod body 40 and the rod body 40 is formed of carbon fiber-reinforced plastic. Epoxy resin is used as matrix resin of the carbon fiber-reinforced plastic forming the rod body 40. By heat treatment for hardening the epoxy resin, body rubber elastic bodies 22 (28) of the vibration isolating bushes 12 (14) are vulcanized and adhered to the outer cylindrical members 20 (26).

Description

本発明は、例えば、自動車用のトルクロッド等として用いられる防振連結ロッドに関するものである。   The present invention relates to an anti-vibration connecting rod used as, for example, a torque rod for automobiles.

従来から、パワーユニットと車両ボデー等の振動伝達系を構成する２つの部材間に跨って装着されて、それら部材を相互に連結するロッド部材の一種として、防振連結ロッドが一般的に知られており、自動車用のトルクロッド等に適用されている。防振連結ロッドは、連結すべき２つの部材の各一方に取り付けられる第１の取付部と第２の取付部が長手状の連結部によって連結された構造を有していると共に、連結すべき２つの部材間での振動伝達を低減するために、第１の取付部と第２の取付部の少なくとも一方が防振ブッシュで構成されている。この防振ブッシュは、インナ軸部材とアウタ筒部材を本体ゴム弾性体で弾性連結した構造を有しており、本体ゴム弾性体の内部摩擦等によるエネルギー減衰作用を利用して防振効果が発揮されるようになっている。例えば、特開２００５−１６３８４３号公報（特許文献１）に示されているのが、それである。   Conventionally, an anti-vibration connecting rod is generally known as a kind of rod member that is mounted across two members constituting a vibration transmission system such as a power unit and a vehicle body and connects the members to each other. It is applied to torque rods for automobiles. The anti-vibration connecting rod has a structure in which a first attachment portion and a second attachment portion attached to each one of two members to be connected are connected by a longitudinal connection portion, and should be connected. In order to reduce vibration transmission between the two members, at least one of the first mounting portion and the second mounting portion is formed of a vibration isolating bush. This anti-vibration bush has a structure in which the inner shaft member and the outer cylinder member are elastically connected by the main rubber elastic body, and the anti-vibration effect is exhibited by utilizing the energy damping action caused by the internal friction of the main rubber elastic body. It has come to be. For example, it is shown in Unexamined-Japanese-Patent No. 2005-163843 (patent document 1).

ところで、防振連結ロッドの連結部やそれに固定される防振ブッシュのアウタ筒部材は、一般的に、鉄やアルミニウム合金等で形成された高剛性の部材とされており、入力に対する変形が防止されている。   By the way, the outer cylinder member of the anti-vibration connecting rod and the anti-vibration bush fixed to the anti-vibration connecting rod is generally a highly rigid member made of iron, aluminum alloy, etc. Has been.

しかしながら、鉄等で形成された連結部やアウタ筒部材は、重量が大きくなり易く、強度を維持しながら軽量化の要求に充分に応えることは難しい場合もあった。更に、連結部と防振ブッシュが独立して形成されている場合には、連結部に対してアウタ筒部材を圧入する等して防振ブッシュを連結部に取り付ける作業が必要になるし、特許文献１に示されているように連結部とアウタ筒部材が一体形成された構造でも、アウタ筒部材に対して本体ゴム弾性体の接着処理（接着剤の塗布等）が必要になって、作業工程数が多くなるおそれがあった。   However, the connecting portion and the outer cylinder member formed of iron or the like are likely to increase in weight, and it may be difficult to sufficiently meet the demand for weight reduction while maintaining the strength. Furthermore, when the connecting portion and the vibration isolating bush are formed independently, it is necessary to attach the vibration isolating bush to the connecting portion by press-fitting the outer cylinder member into the connecting portion. Even in the structure in which the connecting portion and the outer cylinder member are integrally formed as shown in the literature 1, it is necessary to bond the main rubber elastic body to the outer cylinder member (application of adhesive, etc.). There was a risk that the number of steps would increase.

特開２００５−１６３８４３号公報JP 2005-163843 A

本発明は、上述の事情を背景に為されたものであって、その解決課題は、充分な強度を確保しながら大幅な軽量化を実現できると共に、部品点数が少なく、且つ、容易に製造可能とされた、新規な構造の防振連結ロッドを提供することにある。   The present invention has been made in the background of the above-mentioned circumstances, and the solution to the problem is that it is possible to realize a significant weight reduction while ensuring sufficient strength, and the number of parts is small and can be easily manufactured. An object of the present invention is to provide a vibration-proof connecting rod having a novel structure.

また、本発明は、上述の如き防振連結ロッドを容易に且つ安定した品質で製造可能となし得る、新規な防振連結ロッドの製造方法を提供することも、目的とする。   Another object of the present invention is to provide a novel anti-vibration connecting rod manufacturing method that makes it possible to manufacture the anti-vibration connecting rod as described above easily and with stable quality.

すなわち、本発明の第１の態様は、振動伝達系を構成する一方の部材に取り付けられる第１の取付部と、振動伝達系を構成する他方の部材に取り付けられる第２の取付部とが、長手状の連結部によって相互に連結されていると共に、それら第１の取付部と第２の取付部との少なくとも一方が、インナ軸部材とアウタ筒部材を本体ゴム弾性体で弾性連結した防振ブッシュによって構成されている防振連結ロッドにおいて、前記連結部と前記アウタ筒部材がロッド本体として一体形成されており、該ロッド本体が炭素繊維強化プラスチックによって形成されていると共に、該ロッド本体を形成する炭素繊維強化プラスチックのマトリックス樹脂がエポキシ樹脂とされて、該エポキシ樹脂の硬化用の熱処理により前記防振ブッシュの前記本体ゴム弾性体が該アウタ筒部材に加硫接着されていることを、特徴とする。   That is, according to the first aspect of the present invention, the first attachment portion attached to one member constituting the vibration transmission system and the second attachment portion attached to the other member constituting the vibration transmission system include: The vibration isolator is connected to each other by a longitudinal connecting portion, and at least one of the first mounting portion and the second mounting portion elastically connects the inner shaft member and the outer cylindrical member with a main rubber elastic body. In the anti-vibration connecting rod constituted by the bush, the connecting portion and the outer cylindrical member are integrally formed as a rod body, and the rod body is formed of carbon fiber reinforced plastic and forms the rod body. The matrix resin of the carbon fiber reinforced plastic to be used is an epoxy resin, and the main rubber ball of the vibration-proof bushing is subjected to heat treatment for curing the epoxy resin. Body that is bonded by vulcanization to the outer tubular member, and wherein.

このような第１の態様に従う構造とされた防振連結ロッドによれば、ロッド本体を成形すると同時に、防振ブッシュの本体ゴム弾性体とロッド本体のアウタ筒部材を接着することができる。それ故、本体ゴム弾性体とアウタ筒部材を接着するための接着剤の塗布工程等が不要になって、防振連結ロッドを容易に得ることができる。   According to the vibration-isolating connecting rod having the structure according to the first aspect, the main rubber elastic body of the vibration-isolating bush and the outer cylinder member of the rod main body can be bonded simultaneously with the molding of the rod main body. Therefore, an application process of an adhesive for bonding the main rubber elastic body and the outer cylinder member becomes unnecessary, and the vibration-proof connecting rod can be easily obtained.

しかも、ロッド本体を形成する炭素繊維強化プラスチックのマトリックス樹脂が、接着剤としても用いられるエポキシ樹脂とされていることで、本体ゴム弾性体とアウタ筒部材の固着強度も十分に得ることができる。   In addition, since the matrix resin of the carbon fiber reinforced plastic forming the rod body is an epoxy resin that is also used as an adhesive, it is possible to sufficiently obtain the fixing strength between the main rubber elastic body and the outer cylindrical member.

また、連結部とアウタ筒部材がロッド本体として一体形成されていることから、部品点数の削減と、それに伴う構造の簡略化が図られる。   Further, since the connecting portion and the outer cylinder member are integrally formed as a rod body, the number of parts can be reduced and the structure associated therewith can be simplified.

また、ロッド本体が質量比強度に優れた炭素繊維強化プラスチックで形成されていることから、ロッド本体の強度を充分に確保しながら、大幅な軽量化を実現することができる。その結果、ロッド本体をマス、本体ゴム弾性体をバネとするマス−バネ共振系における剛体共振によって振動状態が悪化するのを防止することができる。   In addition, since the rod body is made of carbon fiber reinforced plastic having an excellent mass specific strength, a significant weight reduction can be realized while sufficiently securing the strength of the rod body. As a result, it is possible to prevent the vibration state from deteriorating due to rigid body resonance in a mass-spring resonance system in which the rod body is a mass and the main rubber elastic body is a spring.

本発明の第２の態様は、第１の態様に従う構造とされた防振連結ロッドにおいて、前記第１の取付部が前記防振ブッシュとしての第１ブッシュで構成されていると共に、前記第２の取付部が前記防振ブッシュとしての第２ブッシュで構成されており、それら第１ブッシュと第２ブッシュの各前記アウタ筒部材が何れも前記連結部と一体形成されて前記ロッド本体が構成されているものである。   According to a second aspect of the present invention, in the vibration proof connecting rod having the structure according to the first aspect, the first attachment portion is constituted by a first bush serving as the vibration proof bush, and the second The mounting portion is composed of a second bushing as the vibration-proof bushing, and each of the outer cylindrical members of the first bushing and the second bushing is integrally formed with the connecting portion to constitute the rod body. It is what.

第２の態様によれば、第１, 第２の取付部が何れも防振ブッシュで構成されていることから、それら防振ブッシュにおいてそれぞれ発揮される防振効果により、より優れた防振性能が実現される。更に、第１, 第２ブッシュの各アウタ筒部材が何れも連結部と一体形成されて、ロッド本体を硬化させる熱処理で本体ゴム弾性体と固着されるようになっていることから、より少ない部品点数で容易に製造可能とされている。   According to the second aspect, since both the first and second mounting portions are constituted by the vibration isolating bushes, the vibration isolating effect exhibited in each of the anti-vibration bushes is more excellent. Is realized. Further, since the outer cylinder members of the first and second bushes are both formed integrally with the connecting portion and fixed to the main rubber elastic body by heat treatment for curing the rod main body, fewer parts are required. It can be easily manufactured with a score.

本発明の第３の態様は、第１又は第２の態様に記載された防振連結ロッドにおいて、前記連結部が中空構造とされており、該連結部における横断面の内外周形状が長さ方向の中間部分から第１の取付部および第２の取付部に向かって次第に拡大されているものである。   According to a third aspect of the present invention, in the vibration-isolating connecting rod described in the first or second aspect, the connecting portion has a hollow structure, and the inner and outer peripheral shape of the cross section of the connecting portion is long. It is gradually enlarged from the middle part of the direction toward the first attachment part and the second attachment part.

第３の態様によれば、連結部が中空構造とされることで、耐荷重性を確保しつつ、更なる軽量化が図られる。   According to the 3rd aspect, a further weight reduction is achieved, ensuring load resistance by making a connection part into a hollow structure.

特に、連結部における横断面の内外周形状が、長さ方向の中間部分から第１の取付部および第２の取付部に向かって、次第に拡大されていることにより、荷重の入力部分である第１, 第２の取付部付近で大きな剛性を確保しながら、軽量化が図られている。   In particular, the inner and outer peripheral shape of the cross section of the connecting portion is gradually enlarged from the intermediate portion in the length direction toward the first mounting portion and the second mounting portion, so that the load input portion is The weight is reduced while securing a large rigidity in the vicinity of the first and second mounting portions.

また、本発明の第４の態様は、振動伝達系を構成する一方の部材に取り付けられる第１の取付部と、振動伝達系を構成する他方の部材に取り付けられる第２の取付部とが、長手状の連結部によって相互に連結されていると共に、それら第１の取付部と第２の取付部との少なくとも一方が、インナ軸部材とアウタ筒部材を本体ゴム弾性体で弾性連結した防振ブッシュによって構成されており、更に、該連結部と該アウタ筒部材がロッド本体として一体形成されて、該ロッド本体が炭素繊維強化プラスチックによって形成されていると共に、該ロッド本体を形成する炭素繊維強化プラスチックのマトリックス樹脂がエポキシ樹脂とされた防振連結ロッドの製造方法であって、前記エポキシ樹脂の硬化剤として前記本体ゴム弾性体の加硫成形温度と同じ温度で硬化する高温硬化剤と、該高温硬化剤よりも低い温度で硬化する低温硬化剤とを、該エポキシ樹脂と共に炭素繊維に含浸して、前記ロッド本体を形成する炭素繊維強化プラスチック材料を準備する工程と、該ロッド本体を形成する炭素繊維強化プラスチック材料を該低温硬化剤の硬化温度に加熱することで該低温硬化剤を硬化させて該ロッド本体を半硬化状態に成形する工程と、半硬化状態に成形された該ロッド本体を該本体ゴム弾性体の加硫成形用金型のキャビティにセットしてから該キャビティに該本体ゴム弾性体の形成材料を充填し、該本体ゴム弾性体を加硫成形すると同時に該高温硬化剤を硬化させて該ロッド本体を完全硬化状態に成形することにより該本体ゴム弾性体と該ロッド本体における前記アウタ筒部材とを接着する工程とを、有することを、特徴とする。   Moreover, the 4th aspect of this invention is the 1st attaching part attached to one member which comprises a vibration transmission system, and the 2nd attachment part attached to the other member which comprises a vibration transmission system, The vibration isolator is connected to each other by a longitudinal connecting portion, and at least one of the first mounting portion and the second mounting portion elastically connects the inner shaft member and the outer cylindrical member with a main rubber elastic body. Further, the connecting portion and the outer cylinder member are integrally formed as a rod main body, and the rod main body is formed of carbon fiber reinforced plastic, and the carbon fiber reinforced forming the rod main body. A method of manufacturing an anti-vibration connecting rod in which a plastic matrix resin is an epoxy resin, and a curing temperature of the main rubber elastic body as a curing agent for the epoxy resin; A carbon fiber reinforced plastic material forming the rod body by impregnating carbon fiber together with the epoxy resin with a high temperature curing agent that cures at the same temperature and a low temperature curing agent that cures at a temperature lower than the high temperature curing agent. Preparing the carbon fiber reinforced plastic material forming the rod body to a curing temperature of the low temperature curing agent to cure the low temperature curing agent and forming the rod body in a semi-cured state; The rod body molded in a semi-cured state is set in a cavity of a mold for vulcanization molding of the main rubber elastic body, and then the body rubber elastic body is filled into the cavity. At the same time, the high temperature curing agent is cured and the rod main body is molded into a completely cured state, thereby bonding the main rubber elastic body and the outer cylindrical member in the rod main body. And that step, to have characterized.

このような第４の態様に従う防振連結ロッドの製造方法によれば、低温硬化剤の熱処理による硬化によってロッド本体を半硬化状態で成形できると共に、その後、より高温の熱処理によって高温硬化剤を硬化させると同時に本体ゴム弾性体を加硫成形することができる。これにより、ロッド本体と本体ゴム弾性体を何れも所定の形状に成形できると共に、それらロッド本体と本体ゴム弾性体を、高温硬化剤の硬化と本体ゴム弾性体の加硫成形とによって、特別な接着処理を要することなく、接着することができる。   According to the method for manufacturing a vibration-isolating connecting rod according to the fourth aspect, the rod body can be molded in a semi-cured state by curing by heat treatment of the low-temperature curing agent, and then the high-temperature curing agent is cured by higher-temperature heat treatment. At the same time, the main rubber elastic body can be vulcanized. As a result, both the rod main body and the main rubber elastic body can be molded into a predetermined shape, and the rod main body and the main rubber elastic body can be specially formed by curing the high temperature curing agent and vulcanizing the main rubber elastic body. Adhesion can be performed without requiring an adhesion treatment.

特に、それぞれ硬化温度の異なる低温硬化剤と高温硬化剤とを用いることにより、硬化反応を容易に精度良く制御することができて、半硬化状態での成形や、本体ゴム弾性体を加硫成形する際の完全硬化状態での成形が、何れも安定して実現される。   In particular, by using a low-temperature curing agent and a high-temperature curing agent with different curing temperatures, the curing reaction can be controlled easily and accurately, and molding in a semi-cured state or vulcanization molding of the main rubber elastic body In this case, the molding in the completely cured state can be realized stably.

本発明によれば、防振連結ロッドのロッド本体が質量比強度に優れた炭素繊維強化プラスチックで形成されていることから、充分な強度を確保しつつ軽量化が図られて、剛体共振による振動状態の悪化が低減される。更に、アウタ筒部材と本体ゴム弾性体が、接着剤の塗布等を要することなく、炭素繊維強化プラスチックのエポキシ樹脂を本体ゴム弾性体の加硫成形と同時に完全硬化させることで接着されることから、少ない部品点数と、優れた量産性とをもって、防振連結ロッドを実現することができる。   According to the present invention, since the rod body of the vibration-isolating connecting rod is formed of carbon fiber reinforced plastic having an excellent mass specific strength, the weight can be reduced while securing sufficient strength, and vibration due to rigid body resonance can be achieved. Deterioration of the condition is reduced. Furthermore, the outer cylinder member and the main rubber elastic body are bonded together by completely curing the epoxy resin of the carbon fiber reinforced plastic simultaneously with the vulcanization molding of the main rubber elastic body without requiring application of an adhesive or the like. A vibration-isolating connecting rod can be realized with a small number of parts and excellent mass productivity.

本発明の１実施形態としてのトルクロッドを示す平面図。The top view which shows the torque rod as one Embodiment of this invention. 図１に示されたトルクロッドの側面図。The side view of the torque rod shown by FIG. 図１のＩＩＩ−ＩＩＩ断面図。III-III sectional drawing of FIG. 図１のＩＶ−ＩＶ断面図。IV-IV sectional drawing of FIG. 図１に示されたトルクロッドを構成するロッド本体の平面図。The top view of the rod main body which comprises the torque rod shown by FIG. 図５に示されたロッド本体の側面図。FIG. 6 is a side view of the rod body shown in FIG. 5. 本発明の別の１実施形態としてのトルクロッドを示す縦断面図であって、図８のＶＩＩ−ＶＩＩ断面に相当する図。It is a longitudinal cross-sectional view which shows the torque rod as another one Embodiment of this invention, Comprising: The figure corresponded in the VII-VII cross section of FIG. 図７のＶＩＩＩ−ＶＩＩＩ断面図。VIII-VIII sectional drawing of FIG. 図１に示されたトルクロッドの形成工程におけるロッド本体の形成工程を説明するための縦断面図。The longitudinal cross-sectional view for demonstrating the formation process of the rod main body in the formation process of the torque rod shown by FIG. 図１に示されたトルクロッドの形成工程における本体ゴム弾性体の形成工程を説明するための縦断面図であって、ゴム材料の充填前を示す図。It is a longitudinal cross-sectional view for demonstrating the formation process of the main body rubber elastic body in the formation process of the torque rod shown by FIG. 1, Comprising: The figure which shows before filling of a rubber material. 図１に示されたトルクロッドの形成工程における本体ゴム弾性体の形成工程を説明するための縦断面図であって、ゴム材料の充填後を示す図。It is a longitudinal cross-sectional view for demonstrating the formation process of the main body rubber elastic body in the formation process of the torque rod shown by FIG. 1, Comprising: The figure which shows after filling of a rubber material.

以下、本発明の実施形態について、図面を参照しつつ説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１〜図４には、本発明に従う構造とされた防振連結ロッドの１実施形態として、自動車用のトルクロッド１０が示されている。トルクロッド１０は、第１の取付部としての第１ブッシュ１２と第２の取付部としての第２ブッシュ１４が連結部１６によって連結された構造を有している。そして、トルクロッド１０は、第１ブッシュ１２において振動伝達系を構成する一方の部材であるパワーユニットに取り付けられると共に、第２ブッシュ１４において振動伝達系を構成する他方の部材である車両ボデーに取り付けられることにより、パワーユニットと車両ボデーを防振連結するようになっている。なお、以下の説明において、上下方向とは、原則として、図２中の上下方向を言う。また、連結部１６の長手方向とは図１中の左右方向を、幅方向とは図１中の上下方向を、それぞれ言う。また、上記の説明からも明らかなように、本実施形態のトルクロッド１０では、第１, 第２の取付部が何れも防振ブッシュによって構成されている。   1 to 4 show a torque rod 10 for an automobile as an embodiment of a vibration-isolating connecting rod having a structure according to the present invention. The torque rod 10 has a structure in which a first bush 12 as a first mounting portion and a second bush 14 as a second mounting portion are connected by a connecting portion 16. The torque rod 10 is attached to the power unit which is one member constituting the vibration transmission system in the first bush 12 and is attached to the vehicle body which is the other member constituting the vibration transmission system in the second bush 14. Thus, the power unit and the vehicle body are connected in a vibration-proof manner. In the following description, the vertical direction means the vertical direction in FIG. 2 in principle. Further, the longitudinal direction of the connecting portion 16 refers to the left-right direction in FIG. 1, and the width direction refers to the up-down direction in FIG. Further, as is clear from the above description, in the torque rod 10 of the present embodiment, the first and second mounting portions are both constituted by vibration-proof bushings.

より詳細には、第１ブッシュ１２は、インナ軸部材１８とアウタ筒部材２０を本体ゴム弾性体２２で弾性連結した構造とされている。インナ軸部材１８は、厚肉小径の略円筒形状を有する高剛性の部材とされている。アウタ筒部材２０は、インナ軸部材１８に比して薄肉大径の略円筒形状を有する高剛性の部材であって、軸方向寸法がインナ軸部材１８よりも小さくされている。そして、インナ軸部材１８がアウタ筒部材２０に挿入されて、本体ゴム弾性体２２によって弾性連結されている。この本体ゴム弾性体２２は、略円筒形状を有しており、内周面がインナ軸部材１８の外周面に固着されていると共に、内周面がアウタ筒部材２０の内周面に固着されている。   More specifically, the first bush 12 has a structure in which the inner shaft member 18 and the outer cylinder member 20 are elastically connected by the main rubber elastic body 22. The inner shaft member 18 is a highly rigid member having a substantially cylindrical shape with a thick wall and a small diameter. The outer cylinder member 20 is a highly rigid member having a thin cylindrical shape with a large diameter compared to the inner shaft member 18, and has an axial dimension smaller than that of the inner shaft member 18. The inner shaft member 18 is inserted into the outer cylinder member 20 and is elastically connected by the main rubber elastic body 22. The main rubber elastic body 22 has a substantially cylindrical shape, and its inner peripheral surface is fixed to the outer peripheral surface of the inner shaft member 18 and its inner peripheral surface is fixed to the inner peripheral surface of the outer cylinder member 20. ing.

一方、第２ブッシュ１４は、インナ軸部材２４とアウタ筒部材２６を本体ゴム弾性体２８で弾性連結した構造とされている。インナ軸部材２４は、第１ブッシュ１２のインナ軸部材２４よりも厚肉の略円筒形状を有する高剛性の部材とされている。アウタ筒部材２６は、インナ軸部材２４に比して薄肉大径の略円筒形状を有する高剛性の部材であって、軸方向寸法がインナ軸部材２４よりも小さく且つ第１ブッシュ１２のアウタ筒部材２６よりも大きくされている。そして、インナ軸部材２４がアウタ筒部材２６に挿入されて、本体ゴム弾性体２８によって弾性連結されている。本体ゴム弾性体２８は、全体として略円筒形状を有しており、内周面がインナ軸部材２４の外周面に固着されていると共に、内周面がアウタ筒部材２６の内周面に固着されている。更に、本体ゴム弾性体２８には、インナ軸部材２４を挟んだ径方向一方の側に内側スリット３０が形成されていると共に、径方向他方の側に外側スリット３２が形成されており、後述する車両前後方向のばねと左右方向のばねとの比が調節されている。なお、内側スリット３０を挟んだ径方向両側と、外側スリット３２を挟んだ径方向両側の本体ゴム弾性体２８によって、インナ軸部材２４とアウタ筒部材２６の径方向での相対変位量を当接により制限するストッパ部が構成されている。   On the other hand, the second bush 14 has a structure in which the inner shaft member 24 and the outer cylinder member 26 are elastically connected by a main rubber elastic body 28. The inner shaft member 24 is a highly rigid member having a substantially cylindrical shape that is thicker than the inner shaft member 24 of the first bush 12. The outer cylinder member 26 is a highly rigid member having a substantially cylindrical shape that is thinner and larger in diameter than the inner shaft member 24, and has an axial dimension smaller than that of the inner shaft member 24 and the outer cylinder of the first bush 12. It is larger than the member 26. The inner shaft member 24 is inserted into the outer cylinder member 26 and is elastically connected by the main rubber elastic body 28. The main rubber elastic body 28 has a substantially cylindrical shape as a whole, and has an inner peripheral surface fixed to the outer peripheral surface of the inner shaft member 24 and an inner peripheral surface fixed to the inner peripheral surface of the outer cylinder member 26. Has been. Further, the main rubber elastic body 28 has an inner slit 30 formed on one side in the radial direction across the inner shaft member 24 and an outer slit 32 formed on the other side in the radial direction, which will be described later. The ratio of the vehicle front-rear spring and the left-right spring is adjusted. Note that the radial displacement of the inner shaft member 24 and the outer cylindrical member 26 is brought into contact with each other by the main rubber elastic bodies 28 on both sides in the radial direction across the inner slit 30 and on both sides in the radial direction across the outer slit 32. The stopper part which restrict | limits by is comprised.

このような構造とされた第１ブッシュ１２と第２ブッシュ１４は、連結部１６によって相互に連結されている。連結部１６は、図５に示されているように、長手ロッド状とされており、長手方向の中間部分から第１ブッシュ１２および第２ブッシュ１４に向かって次第に幅方向（図４中、左右）で拡大していると共に、図６に示されているように、上下両面が傾斜面で構成されて、上下の厚さ寸法が第１ブッシュ１２側（図５中、左側）に行くに従って次第に小さくなっている。   The first bush 12 and the second bush 14 having such a structure are connected to each other by a connecting portion 16. As shown in FIG. 5, the connecting portion 16 has a longitudinal rod shape, and gradually increases in the width direction from the middle portion in the longitudinal direction toward the first bush 12 and the second bush 14 (in FIG. 6), and as shown in FIG. 6, the upper and lower surfaces are formed of inclined surfaces, and the upper and lower thickness dimensions gradually increase toward the first bush 12 side (left side in FIG. 5). It is getting smaller.

なお、図７，図８に示されているように、連結部１６の内部に肉抜空所３４が形成されて、連結部１６が中空構造とされることで軽量化が図られていても良い。肉抜空所３４は、図７に示されているように、上下方向の寸法が第１ブッシュ１２側に行くに従って次第に小さくなっていると共に、図８に示されているように、横断面において長手方向の中間から第１ブッシュ１２および第２ブッシュ１４に向かって次第に幅方向で拡大している。要するに、肉抜空所３４は、連結部１６の外形と対応する形状で形成されており、中空構造とされた連結部１６の内外面形状が互いに対応していることから、連結部１６の上下左右の隔壁部が略一定の厚さ寸法で形成されている。このような肉抜空所３４は、例えば、ロストコア成形法等で形成されていても良いし、連結部１６を複数の部品で構成して、それら部品の固着によって内部に形成されるようにしても良い。   As shown in FIGS. 7 and 8, even if the lightening space 34 is formed inside the connecting portion 16 and the connecting portion 16 has a hollow structure, the weight can be reduced. good. As shown in FIG. 7, the empty space 34 is gradually reduced in size in the vertical direction as it goes to the first bush 12 side, and in the cross section as shown in FIG. 8. From the middle in the longitudinal direction, it gradually expands in the width direction toward the first bush 12 and the second bush 14. In short, the empty space 34 is formed in a shape corresponding to the outer shape of the connecting portion 16, and the inner and outer surface shapes of the connecting portion 16 having a hollow structure correspond to each other. The left and right partition walls are formed with a substantially constant thickness. Such an empty space 34 may be formed by, for example, a lost core molding method or the like, and the connecting portion 16 is constituted by a plurality of parts and is formed inside by fixing these parts. Also good.

さらに、連結部１６の厚さ方向中央部分には、補強板部３６が一体形成されている。補強板部３６は、連結部１６の上下方向略中央から幅方向外側に突出して設けられており、全体が略一定の厚さ寸法で形成されていると共に、第１ブッシュ１２に向かって次第に狭幅となっている。   Further, a reinforcing plate portion 36 is integrally formed at the central portion of the connecting portion 16 in the thickness direction. The reinforcing plate portion 36 is provided so as to protrude outward in the width direction from the substantially vertical center of the connecting portion 16, and is formed with a substantially constant thickness dimension and gradually narrows toward the first bush 12. It is wide.

そして、連結部１６の長手方向一方の端部に第１ブッシュ１２が設けられていると共に、長手方向他方の端部に第２ブッシュ１４が設けられて、トルクロッド１０が構成されている。なお、本実施形態のトルクロッド１０では、アウタ筒部材２０，２６および連結部１６の表面が本体ゴム弾性体２２，２８と一体形成された被覆ゴム層３８で覆われており、それら本体ゴム弾性体２２，２８が被覆ゴム層３８と共に一体で形成されている。   The first bush 12 is provided at one end in the longitudinal direction of the connecting portion 16, and the second bush 14 is provided at the other end in the longitudinal direction, so that the torque rod 10 is configured. In the torque rod 10 of the present embodiment, the surfaces of the outer cylinder members 20, 26 and the connecting portion 16 are covered with a covering rubber layer 38 that is integrally formed with the main rubber elastic bodies 22, 28. The bodies 22 and 28 are integrally formed with the covering rubber layer 38.

そこにおいて、トルクロッド１０では、図３に示されているように、第１ブッシュ１２のアウタ筒部材２０と、第２ブッシュ１４のアウタ筒部材２６と、連結部１６とが、炭素繊維強化プラスチック（以下、ＣＦＲＰ）によって一体形成されている。そして、一体形成されたアウタ筒部材２０，２６と連結部１６とを含んで、ロッド本体４０が構成されている。   Therefore, in the torque rod 10, as shown in FIG. 3, the outer cylinder member 20 of the first bush 12, the outer cylinder member 26 of the second bush 14, and the connecting portion 16 are made of carbon fiber reinforced plastic. (Hereinafter referred to as CFRP). The rod body 40 is configured to include the integrally formed outer cylinder members 20 and 26 and the connecting portion 16.

このＣＦＲＰ製のロッド本体４０は、炭素繊維にマトリックス樹脂としてのエポキシ樹脂を含浸した後、エポキシ樹脂を熱処理（加熱）によって硬化させて形成されている。ここで用いられる炭素繊維は、ＰＡＮ系であっても、ピッチ系であっても良く、特に限定されない。また、本実施形態では、エポキシ樹脂の硬化剤として、硬化温度の異なる２種類の硬化剤（高温硬化剤と低温硬化剤）が用いられている。より詳細には、高温硬化剤と低温硬化剤は、何れも加熱硬化型の硬化剤であって、例えば、酸無水物や芳香族アミン等が用いられ得る。また、高温硬化剤の硬化温度が、本体ゴム弾性体２２，２８の加硫成形温度と略同じとされていると共に、低温硬化剤の硬化温度が、高温硬化剤の硬化温度よりも低温で且つ常温よりも充分に高温に設定されている。従って、高温硬化剤と低温硬化剤によるエポキシ樹脂の硬化は、何れもオートクレーブ等での加熱焼成によって実現される。なお、常温での硬化反応を防ぐために、低温硬化剤の硬化温度は１００℃以上であることが望ましい。更に、後述する半硬化状態を安定して得るために、低温硬化剤の硬化温度が高温硬化剤の硬化温度に対して１０℃以上低くされていることが望ましく、より好適には２０℃以上の温度差が設定される。また、高温硬化剤と低温硬化剤に加えて、硬化促進剤を用いて硬化反応の進行を早めることも可能である。   The CFRP rod body 40 is formed by impregnating carbon fiber with an epoxy resin as a matrix resin and then curing the epoxy resin by heat treatment (heating). The carbon fibers used here may be PAN-based or pitch-based, and are not particularly limited. In this embodiment, two types of curing agents (high temperature curing agent and low temperature curing agent) having different curing temperatures are used as the curing agent for the epoxy resin. More specifically, the high-temperature curing agent and the low-temperature curing agent are both heat-curing type curing agents, and for example, acid anhydrides and aromatic amines can be used. Further, the curing temperature of the high temperature curing agent is substantially the same as the vulcanization molding temperature of the main rubber elastic bodies 22 and 28, and the curing temperature of the low temperature curing agent is lower than the curing temperature of the high temperature curing agent and The temperature is set sufficiently higher than room temperature. Therefore, the curing of the epoxy resin with the high temperature curing agent and the low temperature curing agent is realized by heating and baking in an autoclave or the like. In order to prevent a curing reaction at normal temperature, the curing temperature of the low temperature curing agent is desirably 100 ° C. or higher. Furthermore, in order to stably obtain a semi-cured state to be described later, it is desirable that the curing temperature of the low-temperature curing agent is 10 ° C. or more lower than the curing temperature of the high-temperature curing agent, and more preferably 20 ° C. or more. Temperature difference is set. In addition to the high temperature curing agent and the low temperature curing agent, the curing reaction can be accelerated by using a curing accelerator.

そして、アウタ筒部材２０，２６を備えたロッド本体４０には、本体ゴム弾性体２２，２８が特別に接着工程を要することなく固着されている。以下に、トルクロッド１０の製造方法の一例として、ロッド本体４０を直接成形法によって製造する工程について説明するが、ロッド本体４０の成形方法は、直接成形法に限定されるものではなく、間接成形法等でも良い。   The main rubber elastic bodies 22 and 28 are fixed to the rod main body 40 provided with the outer cylindrical members 20 and 26 without requiring any special bonding process. Hereinafter, as an example of a manufacturing method of the torque rod 10, a process of manufacturing the rod body 40 by a direct molding method will be described. However, the molding method of the rod body 40 is not limited to the direct molding method, and indirect molding is performed. Laws may be used.

先ず、ロッド本体４０の成形用金型４２のキャビティ４４に、予め準備した炭素繊維を入れると共に、エポキシ樹脂と高温硬化剤と低温硬化剤とを混合してキャビティ４４に充填する（図９参照）。これにより、成形用金型４２のキャビティ４４で炭素繊維に硬化剤を混合したエポキシ樹脂を含浸させて、炭素繊維強化プラスチック材料を準備する工程が完了する。   First, carbon fibers prepared in advance are put into the cavity 44 of the molding die 42 of the rod body 40, and an epoxy resin, a high temperature curing agent, and a low temperature curing agent are mixed and filled into the cavity 44 (see FIG. 9). . Thereby, the process of preparing the carbon fiber reinforced plastic material by impregnating the carbon fiber with the epoxy resin mixed with the curing agent in the cavity 44 of the molding die 42 is completed.

次に、成形用金型４２を温度調節手段４６で低温硬化剤の硬化温度（Ｔ1 ）まで加熱して、所定時間に亘って温度を維持することにより、炭素繊維強化プラスチック材料の低温硬化剤を硬化させて、ロッド本体４０を半硬化状態で成形する。なお、ここでは、成形されたロッド本体４０の形状は低温硬化剤の硬化によって安定しており、流動性は失われているが、低温硬化剤よりも硬化温度が高い高温硬化剤が未だ硬化しておらず、表面に粘着性（接着性）がある状態で成形されることから、半硬化状態と称している。これにより、ロッド本体４０を半硬化状態で所定形状に成形する、１次熱処理工程を完了する。 Next, the molding die 42 is heated to the curing temperature (T 1 ) of the low temperature curing agent by the temperature adjusting means 46, and the temperature is maintained for a predetermined time, whereby the low temperature curing agent for the carbon fiber reinforced plastic material. And the rod body 40 is molded in a semi-cured state. Here, the shape of the molded rod body 40 is stabilized by the curing of the low temperature curing agent, and the fluidity is lost, but the high temperature curing agent having a curing temperature higher than that of the low temperature curing agent is still cured. However, it is called a semi-cured state because it is molded with the surface having tackiness (adhesiveness). Thereby, the primary heat treatment process which shape | molds the rod main body 40 in a predetermined shape in a semi-hardened state is completed.

また次に、図１０に示されているように、半硬化状態で成形されたロッド本体４０と、インナ軸部材１８，２４を本体ゴム弾性体２２，２８の成形用金型４８にセットした後、図１１に示されているように、成形用金型４８のキャビティ５０にゴム材料を充填し、成形用金型４８を温度調節手段５２で本体ゴム弾性体２２，２８の加硫成形温度（Ｔ2 ）まで加熱した状態に所定の時間だけ保持する。これにより、本体ゴム弾性体２２，２８を所定の形状に加硫成形すると共に、高温硬化剤が硬化してロッド本体４０を完全硬化させる。なお、上述のように、本体ゴム弾性体２２，２８の加硫成形温度（Ｔ2 ）は、低温硬化剤の硬化温度（Ｔ1 ）よりも高温とされている（Ｔ2 ＞Ｔ1 ）。 Next, as shown in FIG. 10, after the rod body 40 molded in a semi-cured state and the inner shaft members 18 and 24 are set in the molding die 48 of the main rubber elastic bodies 22 and 28. 11, the cavity 50 of the molding die 48 is filled with a rubber material, and the molding die 48 is vulcanized and molded by the temperature adjusting means 52 with the vulcanization molding temperature of the main rubber elastic bodies 22 and 28 ( Hold in a state heated to T 2 ) for a predetermined time. Accordingly, the main rubber elastic bodies 22 and 28 are vulcanized and molded into a predetermined shape, and the high temperature curing agent is cured to completely cure the rod main body 40. As described above, the vulcanization molding temperature (T 2 ) of the main rubber elastic bodies 22 and 28 is higher than the curing temperature (T 1 ) of the low-temperature curing agent (T 2 > T 1 ).

そこにおいて、ロッド本体４０のエポキシ樹脂を半硬化状態から完全硬化させる熱処理によって、本体ゴム弾性体２２，２８およびロッド本体４０の成形と同時に本体ゴム弾性体２２，２８とロッド本体４０を接着する。そして、成形用金型４８の脱型後には、連結部１６の両端に第１, 第２ブッシュ１２，１４を備えたトルクロッド１０が形成されて、インナ軸部材１８，２４とロッド本体４０のアウタ筒部材２０，２６とが本体ゴム弾性体２２，２８によって弾性連結されている。これにより、本体ゴム弾性体２２，２８を加硫成形すると同時に、ロッド本体４０を完全硬化状態で成形し、更に本体ゴム弾性体２２，２８とロッド本体４０のアウタ筒部材２０，２６を接着する、２次熱処理工程を完了して、トルクロッド１０の製造を完了する。   Then, the main rubber elastic bodies 22 and 28 and the rod main body 40 are bonded simultaneously with the molding of the main rubber elastic bodies 22 and 28 and the rod main body 40 by heat treatment for completely curing the epoxy resin of the rod main body 40 from the semi-cured state. After the mold 48 is removed, the torque rod 10 having the first and second bushes 12 and 14 is formed at both ends of the connecting portion 16, so that the inner shaft members 18 and 24 and the rod body 40 are connected to each other. The outer cylinder members 20 and 26 are elastically connected by the main rubber elastic bodies 22 and 28. Thus, the main rubber elastic bodies 22 and 28 are vulcanized and molded, and at the same time, the rod main body 40 is molded in a completely cured state, and the main rubber elastic bodies 22 and 28 and the outer cylinder members 20 and 26 of the rod main body 40 are bonded. The secondary heat treatment step is completed to complete the manufacture of the torque rod 10.

なお、本実施形態では、被覆ゴム層３８が本体ゴム弾性体２２，２８と一体で形成されており、被覆ゴム層３８も、本体ゴム弾性体２２，２８と同様に、ロッド本体４０（補強板部３６を含む）の表面に対して、成形と同時に固着されている。   In this embodiment, the covering rubber layer 38 is formed integrally with the main rubber elastic bodies 22 and 28, and the covering rubber layer 38 is also the rod main body 40 (reinforcing plate) in the same manner as the main rubber elastic bodies 22 and 28. It is fixed to the surface of (including the portion 36) at the same time as molding.

このような本実施形態に係るトルクロッド１０では、ロッド本体４０が鉄等の従来材料に比して重量比強度に優れたＣＦＲＰで形成されていることから、充分な強度を確保しながら軽量化を図ることができる。それ故、自動車の軽量化に資するだけでなく、ロッド本体４０の剛体共振による振動状態の悪化等も回避されて、優れた防振性能が実現される。   In such a torque rod 10 according to this embodiment, the rod body 40 is formed of CFRP having a superior weight specific strength compared to conventional materials such as iron, so that the weight is reduced while ensuring sufficient strength. Can be achieved. Therefore, not only contributes to the weight reduction of the automobile, but also the deterioration of the vibration state due to the rigid resonance of the rod body 40 is avoided, and excellent vibration isolation performance is realized.

さらに、第１, 第２ブッシュ１２，１４を構成するアウタ筒部材２０，２６と、それら第１, 第２ブッシュ１２，１４を連結する連結部１６とが、一体形成されたロッド本体４０で構成されている。それ故、部品点数の削減と、それに伴う構造の簡略化や製造工程数の削減等が実現される。   Further, the outer cylinder members 20 and 26 constituting the first and second bushes 12 and 14 and the connecting portion 16 for connecting the first and second bushes 12 and 14 are constituted by a rod body 40 integrally formed. Has been. Therefore, a reduction in the number of parts, a simplification of the structure, a reduction in the number of manufacturing processes, and the like are realized.

しかも、ロッド本体４０の形成材料であるＣＦＲＰのマトリックス樹脂が、ゴム弾性体に馴染んで有効な接着力を発揮し得るエポキシ樹脂とされており、エポキシ樹脂の硬化と本体ゴム弾性体２２，２８の加硫成形とを同時に行うことで、特別な接着剤の塗布工程を設けることなく本体ゴム弾性体２２，２８とロッド本体４０の強固な固着が実現されている。このように、ロッド本体４０を形成するＣＦＲＰのマトリックス樹脂をエポキシ樹脂とすることで、少なく且つ簡単な製造工程によってトルクロッド１０を得ることができる。   Moreover, the matrix resin of CFRP, which is a material for forming the rod body 40, is an epoxy resin that can be used in the rubber elastic body and exhibit an effective adhesive force. By performing the vulcanization molding at the same time, the main rubber elastic bodies 22 and 28 and the rod main body 40 are firmly fixed without providing a special adhesive application step. Thus, by using the epoxy resin as the CFRP matrix resin forming the rod body 40, the torque rod 10 can be obtained by a small and simple manufacturing process.

かかるＣＦＲＰのマトリックス樹脂（エポキシ樹脂）による接着をより効果的に実現するために、本実施形態では、エポキシ樹脂の硬化剤として、硬化温度の異なる２種類の硬化剤（高温硬化剤と低温硬化剤）が混合されて用いられていると共に、高温硬化剤の硬化温度が本体ゴム弾性体２２，２８の加硫成形温度と略同じとされている。これにより、低温硬化剤の硬化温度でロッド本体４０を表面に接着性のある半硬化状態に成形した後、本体ゴム弾性体２２，２８の成形用金型４８内で本体ゴム弾性体２２，２８の形成材料と共に本体ゴム弾性体２２，２８の加硫成形温度まで加熱することで、本体ゴム弾性体２２，２８の加硫成形と同時に、ロッド本体４０の完全硬化による本体ゴム弾性体２２，２８との接着が実現される。それ故、本体ゴム弾性体２２，２８の加硫接着と、ロッド本体４０のエポキシ樹脂が硬化することによる接着とによって、本体ゴム弾性体２２，２８とアウタ筒部材２０，２６がより強固に固着されるようになっている。   In this embodiment, two types of curing agents having different curing temperatures (a high temperature curing agent and a low temperature curing agent) are used as curing agents for the epoxy resin in order to more effectively realize the adhesion of the CFRP matrix resin (epoxy resin). ) Are mixed and used, and the curing temperature of the high-temperature curing agent is substantially the same as the vulcanization molding temperature of the main rubber elastic bodies 22 and 28. Thus, after the rod main body 40 is molded in a semi-cured state having adhesiveness to the surface at the curing temperature of the low temperature curing agent, the main rubber elastic bodies 22, 28 in the molding die 48 of the main rubber elastic bodies 22, 28. Is heated to the vulcanization molding temperature of the main rubber elastic bodies 22 and 28 together with the forming material of the main rubber elastic bodies 22 and 28 by the complete curing of the rod main body 40 simultaneously with the vulcanization molding of the main rubber elastic bodies 22 and 28. Adhesion with is realized. Therefore, the main rubber elastic bodies 22 and 28 and the outer cylindrical members 20 and 26 are more firmly fixed to each other by the vulcanization bonding of the main rubber elastic bodies 22 and 28 and the adhesion by curing the epoxy resin of the rod main body 40. It has come to be.

しかも、低温硬化剤と高温硬化剤とを混合して用いて、それらの硬化剤を順に硬化させることにより、硬化反応の制御が容易になって、半硬化状態と完全硬化状態とを何れも安定して実現することができる。それ故、本体ゴム弾性体２２，２８とアウタ筒部材２０，２６とを安定した接着強度で接着できる。   In addition, using a mixture of a low-temperature curing agent and a high-temperature curing agent, and curing those curing agents in sequence, the control of the curing reaction is facilitated, and both the semi-cured state and the fully cured state are stable. Can be realized. Therefore, the main rubber elastic bodies 22 and 28 and the outer cylinder members 20 and 26 can be bonded with a stable bonding strength.

以上、本発明の実施形態について詳述してきたが、本発明はその具体的な記載によって限定されない。例えば、前記実施形態では、第１の取付部と第２の取付部が何れも防振ブッシュで構成されていたが、第１の取付部と第２の取付部の何れか一方が防振ブッシュであれば良く、他方はインナ軸部材とアウタ筒部材が摺動可能に当接されたベアリング構造等であっても良い。   As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, in the above-described embodiment, the first mounting portion and the second mounting portion are both constituted by the vibration isolating bush, but either the first mounting portion or the second mounting portion is the vibration isolating bush. The other may be a bearing structure in which the inner shaft member and the outer cylinder member are slidably contacted.

また、前記実施形態では、インナ軸部材１８，２４が金属材料で形成されているが、インナ軸部材をアウタ筒部材と同様のＣＦＲＰで形成することも可能である。その場合には、インナ軸部材も、アウタ筒部材と同様に、半硬化状態で成形した後、本体ゴム弾性体の加硫成形と同時に完全硬化させることで、接着剤を用いることなくインナ軸部材と本体ゴム弾性体の接着を実現することができる。   Moreover, in the said embodiment, although the inner shaft members 18 and 24 are formed with the metal material, it is also possible to form an inner shaft member with the same CFRP as an outer cylinder member. In that case, the inner shaft member is also molded in a semi-cured state like the outer cylindrical member, and then completely cured simultaneously with the vulcanization molding of the main rubber elastic body, so that the inner shaft member is used without using an adhesive. And the main rubber elastic body can be bonded.

また、ロッド本体は、ＣＦＲＰ単体で形成されていても良いし、金属材やゴム弾性体、合成樹脂材等との複合材で形成されていても良い。更に、ロッド本体は、全体がワンピースで形成されていることが望ましいが、複数の部品で構成されていても良い。   Further, the rod body may be formed of a single CFRP, or may be formed of a composite material with a metal material, a rubber elastic body, a synthetic resin material, or the like. Furthermore, the rod body is preferably formed as a whole in one piece, but may be composed of a plurality of parts.

さらに、前記実施形態では、ロッド本体を直接成形法によって成形する方法が例示されているが、ロッド本体の成形方法は特に限定されるものではなく、従来公知の各種成形方法が採用され得る。   Furthermore, in the said embodiment, although the method of shape | molding a rod main body by the direct shaping | molding method is illustrated, the shaping | molding method of a rod main body is not specifically limited, Various conventionally well-known shaping | molding methods can be employ | adopted.

また、連結部の具体的な形状は、実施形態のものに限定されない。例えば、上下両面がテーパ形状とされていてる必要はないし、補強板部が省略されていたり、全体が略一定の厚さ寸法を有する板状とされていても良い。   Moreover, the specific shape of a connection part is not limited to the thing of embodiment. For example, the upper and lower surfaces do not need to be tapered, and the reinforcing plate portion may be omitted, or the whole may have a plate shape having a substantially constant thickness dimension.

さらに、連結部を含んだロッド本体は、例えば、上下方向視でＹ字形状とされて、３つの取付部を有していても良い。   Furthermore, the rod main body including the connecting portion may be, for example, Y-shaped when viewed in the vertical direction and may have three attachment portions.

また、前記実施形態では、第１ブッシュ１２の軸方向と、第２ブッシュ１４の軸方向とが、何れも上下方向とされていたが、それら防振ブッシュの軸方向は互いに異なる方向とされていても良い。   Moreover, in the said embodiment, although the axial direction of the 1st bush 12 and the axial direction of the 2nd bush 14 were all made into the up-down direction, the axial directions of these anti-vibration bushes are mutually different directions. May be.

また、本発明に係る防振連結ロッドは、自動車のトルクロッド以外にも、自動車のサスペンションアームやリンクロッド等にも適用可能である。更に、本発明は自動車以外の各種装置における防振連結ロッドに対しても、好適に適用され得る。   Further, the anti-vibration connecting rod according to the present invention can be applied to a suspension arm, a link rod, and the like of an automobile in addition to the torque rod of the automobile. Furthermore, the present invention can be suitably applied to a vibration-isolating connecting rod in various devices other than automobiles.

１０：トルクロッド（防振連結ロッド）、１２：第１ブッシュ（第１の取付部、防振ブッシュ）、１４：第２ブッシュ（第２の取付部、防振ブッシュ）、１６：連結部、１８；インナ軸部材、２０：アウタ筒部材、２２：本体ゴム弾性体、２４：インナ軸部材、２６：アウタ筒部材、２８：本体ゴム弾性体、４０：ロッド本体 10: torque rod (anti-vibration connecting rod), 12: first bush (first mounting portion, anti-vibration bush), 14: second bush (second mounting portion, anti-vibration bush), 16: connection portion, 18: Inner shaft member, 20: Outer cylinder member, 22: Body rubber elastic body, 24: Inner shaft member, 26: Outer cylinder member, 28: Body rubber elastic body, 40: Rod body

Claims (4)

振動伝達系を構成する一方の部材に取り付けられる第１の取付部と、振動伝達系を構成する他方の部材に取り付けられる第２の取付部とが、長手状の連結部によって相互に連結されていると共に、それら第１の取付部と第２の取付部との少なくとも一方が、インナ軸部材とアウタ筒部材を本体ゴム弾性体で弾性連結した防振ブッシュによって構成されている防振連結ロッドにおいて、
前記連結部と前記アウタ筒部材がロッド本体として一体形成されており、該ロッド本体が炭素繊維強化プラスチックによって形成されていると共に、該ロッド本体を形成する炭素繊維強化プラスチックのマトリックス樹脂がエポキシ樹脂とされて、該エポキシ樹脂の硬化用の熱処理により前記防振ブッシュの前記本体ゴム弾性体が該アウタ筒部材に加硫接着されていることを特徴とする防振連結ロッド。 A first attachment portion attached to one member constituting the vibration transmission system and a second attachment portion attached to the other member constituting the vibration transmission system are connected to each other by a longitudinal connection portion. And at least one of the first mounting portion and the second mounting portion is a vibration-isolating connecting rod configured by a vibration-isolating bushing in which an inner shaft member and an outer cylinder member are elastically connected by a main rubber elastic body. ,
The connecting portion and the outer cylindrical member are integrally formed as a rod body, the rod body is formed of carbon fiber reinforced plastic, and a matrix resin of the carbon fiber reinforced plastic forming the rod body is an epoxy resin. The anti-vibration connecting rod is characterized in that the main rubber elastic body of the anti-vibration bush is vulcanized and bonded to the outer cylinder member by heat treatment for curing the epoxy resin. 前記第１の取付部が前記防振ブッシュとしての第１ブッシュで構成されていると共に、前記第２の取付部が前記防振ブッシュとしての第２ブッシュで構成されており、それら第１ブッシュと第２ブッシュの各前記アウタ筒部材が何れも前記連結部と一体形成されて前記ロッド本体が構成されている請求項１に記載の防振連結ロッド。   The first mounting portion is composed of a first bush as the vibration isolating bush, and the second mounting portion is composed of a second bush as the vibration isolating bush. The anti-vibration connecting rod according to claim 1, wherein each of the outer cylindrical members of the second bush is integrally formed with the connecting portion to constitute the rod body. 前記連結部が中空構造とされており、該連結部における横断面の内外周形状が長さ方向の中間部分から第１の取付部および第２の取付部に向かって次第に拡大されている請求項１又は２に記載の防振連結ロッド。   The connecting portion has a hollow structure, and an inner and outer peripheral shape of a cross section of the connecting portion is gradually enlarged from an intermediate portion in a length direction toward the first mounting portion and the second mounting portion. The anti-vibration connecting rod according to 1 or 2. 振動伝達系を構成する一方の部材に取り付けられる第１の取付部と、振動伝達系を構成する他方の部材に取り付けられる第２の取付部とが、長手状の連結部によって相互に連結されていると共に、それら第１の取付部と第２の取付部との少なくとも一方が、インナ軸部材とアウタ筒部材を本体ゴム弾性体で弾性連結した防振ブッシュによって構成されており、更に、該連結部と該アウタ筒部材がロッド本体として一体形成されて、該ロッド本体が炭素繊維強化プラスチックによって形成されていると共に、該ロッド本体を形成する炭素繊維強化プラスチックのマトリックス樹脂がエポキシ樹脂とされた防振連結ロッドの製造方法であって、
前記エポキシ樹脂の硬化剤として前記本体ゴム弾性体の加硫成形温度と同じ温度で硬化する高温硬化剤と、該高温硬化剤よりも低い温度で硬化する低温硬化剤とを、該エポキシ樹脂と共に炭素繊維に含浸して、前記ロッド本体を形成する炭素繊維強化プラスチック材料を準備する工程と、
該ロッド本体を形成する炭素繊維強化プラスチック材料を該低温硬化剤の硬化温度に加熱することで該低温硬化剤を硬化させて該ロッド本体を半硬化状態に成形する工程と、
半硬化状態に成形された該ロッド本体を該本体ゴム弾性体の加硫成形用金型のキャビティにセットしてから該キャビティに該本体ゴム弾性体の形成材料を充填し、該本体ゴム弾性体を加硫成形すると同時に該高温硬化剤を硬化させて該ロッド本体を完全硬化状態に成形することにより該本体ゴム弾性体と該ロッド本体における前記アウタ筒部材とを接着する工程と
を、有することを特徴とする防振連結ロッドの製造方法。 A first attachment portion attached to one member constituting the vibration transmission system and a second attachment portion attached to the other member constituting the vibration transmission system are connected to each other by a longitudinal connection portion. And at least one of the first mounting portion and the second mounting portion is constituted by a vibration-proof bushing in which the inner shaft member and the outer cylinder member are elastically connected by a main rubber elastic body, and the connection And the outer cylinder member are integrally formed as a rod body, the rod body is formed of carbon fiber reinforced plastic, and the matrix resin of the carbon fiber reinforced plastic forming the rod body is an epoxy resin. A method of manufacturing a vibration coupling rod,
As the epoxy resin curing agent, a high-temperature curing agent that cures at the same temperature as the vulcanization molding temperature of the main rubber elastic body, and a low-temperature curing agent that cures at a temperature lower than the high-temperature curing agent, together with the epoxy resin and carbon Preparing a carbon fiber reinforced plastic material impregnating fibers to form the rod body;
Heating the carbon fiber reinforced plastic material forming the rod body to the curing temperature of the low temperature curing agent to cure the low temperature curing agent and molding the rod body into a semi-cured state;
The rod body molded in a semi-cured state is set in a cavity of a mold for vulcanization molding of the main rubber elastic body, and then the body rubber elastic body is filled into the cavity. A step of bonding the rubber elastic body of the main body and the outer cylindrical member of the rod main body by curing the high temperature curing agent and molding the rod main body to a fully cured state at the same time. A method of manufacturing an anti-vibration connecting rod.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112123803A (en) * 2020-08-05 2020-12-25 安徽中鼎橡塑制品有限公司 Sensor cover and manufacturing method thereof
JP2021020627A (en) * 2019-07-30 2021-02-18 住友理工株式会社 Vehicle strength member made of synthetic resin

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JPS56155739A (en) * 1980-05-06 1981-12-02 Tokai Rubber Ind Ltd Manufacture of vibration-proof rubber with plate made of epoxy resin planted with bolt
JPS6161834A (en) * 1984-09-03 1986-03-29 Toyota Motor Corp Fiber reinforced resin product equipped with rubber bushing part
JPH01126413A (en) * 1987-11-09 1989-05-18 Tokai Rubber Ind Ltd Connecting rod made of resin
JPH07117428A (en) * 1993-10-28 1995-05-09 Nissan Motor Co Ltd Link member of vehicle suspension
JPH10266514A (en) * 1997-03-25 1998-10-06 Toray Ind Inc Handrail
JP2005163843A (en) * 2003-11-28 2005-06-23 Tokai Rubber Ind Ltd Torque rod
JP2005265122A (en) * 2004-03-19 2005-09-29 Tokai Rubber Ind Ltd Resin torque rod

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Publication number Priority date Publication date Assignee Title
JPS56155739A (en) * 1980-05-06 1981-12-02 Tokai Rubber Ind Ltd Manufacture of vibration-proof rubber with plate made of epoxy resin planted with bolt
JPS6161834A (en) * 1984-09-03 1986-03-29 Toyota Motor Corp Fiber reinforced resin product equipped with rubber bushing part
JPH01126413A (en) * 1987-11-09 1989-05-18 Tokai Rubber Ind Ltd Connecting rod made of resin
JPH07117428A (en) * 1993-10-28 1995-05-09 Nissan Motor Co Ltd Link member of vehicle suspension
JPH10266514A (en) * 1997-03-25 1998-10-06 Toray Ind Inc Handrail
JP2005163843A (en) * 2003-11-28 2005-06-23 Tokai Rubber Ind Ltd Torque rod
JP2005265122A (en) * 2004-03-19 2005-09-29 Tokai Rubber Ind Ltd Resin torque rod

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021020627A (en) * 2019-07-30 2021-02-18 住友理工株式会社 Vehicle strength member made of synthetic resin
JP7291564B2 (en) 2019-07-30 2023-06-15 住友理工株式会社 Synthetic resin strength member for vehicle
CN112123803A (en) * 2020-08-05 2020-12-25 安徽中鼎橡塑制品有限公司 Sensor cover and manufacturing method thereof

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