JP2001200892A - Torque rod - Google Patents
Torque rodInfo
- Publication number
- JP2001200892A JP2001200892A JP2000009984A JP2000009984A JP2001200892A JP 2001200892 A JP2001200892 A JP 2001200892A JP 2000009984 A JP2000009984 A JP 2000009984A JP 2000009984 A JP2000009984 A JP 2000009984A JP 2001200892 A JP2001200892 A JP 2001200892A
- Authority
- JP
- Japan
- Prior art keywords
- torque rod
- rod
- vibration
- aluminum alloy
- torque
- 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.)
- Withdrawn
Links
Landscapes
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Vibration Prevention Devices (AREA)
Abstract
(57)【要約】
【課題】トルクロッドの軽量化により振動減衰特性の改
善を図る。
【解決手段】トルクロッド部５をアルミ合金により軽量
化して共振点を高周波領域に移行させ、良好な振動減衰
特性が得られるようにし、ダイナミックダンパーを使用
する場合に比べて軽量化とコストの低減を図る。
[PROBLEMS] To improve vibration damping characteristics by reducing the weight of a torque rod. The torque rod portion is made of aluminum alloy to reduce its weight and shift the resonance point to a high-frequency region so that good vibration damping characteristics can be obtained. The weight and cost are reduced as compared with the case where a dynamic damper is used. Plan.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、エンジン側と車体
側とを防振的に連結するロッド部を有するトルクロッド
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torque rod having a rod portion for connecting an engine and a vehicle body in a vibration-proof manner.
【０００２】[0002]
【従来技術】自動車のエンジンルームには、エンジンか
らの振動が車体側に伝達されるのを防止するため、エン
ジンを防振的に支承するエンジンマウントの他に、エン
ジンのトルク変動等による振動の伝達を防止するため
に、エンジン側と車体側とをトルクロッドで防振的に連
結した防振装置が知られている。2. Description of the Related Art In an engine room of an automobile, in order to prevent vibration from the engine from being transmitted to the vehicle body, in addition to an engine mount for supporting the engine in a vibration-proof manner, vibration of the engine due to fluctuations in engine torque and the like is provided. 2. Description of the Related Art In order to prevent transmission, there is known an anti-vibration device in which an engine side and a vehicle body side are connected in a vibration-proof manner by a torque rod.
【０００３】従来、このトルクロッドは、鉄製のロッド
部の両端に同じく鉄製の連結筒を溶接などにより連結し
た構造としていた。Conventionally, this torque rod has a structure in which an iron connecting cylinder is connected to both ends of an iron rod by welding or the like.
【０００４】[0004]
【発明が解決しようとする課題】ところで、振動工学的
見地からみれば、各物体には固有振動数があり、外力の
振動数が物体の固有振動数に近付くと共振を起こすこと
になる。トルクロッドについても同様に共振を起こすこ
とになる。この場合、トルクロッドを従来のごとく、鉄
製のものを使用すると、その質量が大きいため、ロッド
自体の共振点が１００〜２００Ｈｚ程度となり、振動減
衰特性を悪化させる要因となっていた。From the viewpoint of vibration engineering, each object has a natural frequency, and resonance occurs when the frequency of the external force approaches the natural frequency of the object. Similarly, resonance occurs in the torque rod. In this case, if an iron-made torque rod is used as in the related art, the resonance point of the rod itself becomes about 100 to 200 Hz due to its large mass, which is a factor that deteriorates the vibration damping characteristics.
【０００５】この振動を抑える対策として、ロッド部に
ダイナミックダンパーを取り付け、共振点を高周波領域
にずらす方策も考えられるが、ダイナミックダンパーの
取り付けにより質量が増大し、また、部品点数の増加並
びに取り付け工程の増加により生産コストがアップする
といった問題があった。As a countermeasure to suppress the vibration, a method of attaching a dynamic damper to the rod portion to shift the resonance point to a high frequency region is conceivable. However, the attachment of the dynamic damper increases the mass, increases the number of parts, and increases the number of mounting steps. There was a problem that the production cost increased due to the increase in the production cost.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、上記課題
を解決するため、トルクロッドのロッド部の素材を鉄に
比べて密度（比重）の小さいアルミニウム合金（以下、
アルミ合金という）製とし、ロッド部の共振点を２００
Ｈｚ以上の高周波領域へ移行させるようにし、振動特性
の改善を図るようにした。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have made a material for a rod portion of a torque rod an aluminum alloy (hereinafter, referred to as a specific gravity) having a smaller density (specific gravity) than iron.
Aluminum alloy) and the resonance point of the rod part is 200
The frequency is shifted to a high frequency range of not less than Hz to improve vibration characteristics.
【０００７】アルミ合金は、各種金属を混合して強度、
摩耗性などの機械的性質や耐食性などを向上させたもの
で、例えば、Ａｌ−Ｓｉ系、Ａｌ−Ｃｕ系、Ａｌ−Ｍｇ
系等が挙げられる。Aluminum alloy is made by mixing various metals with strength,
It has improved mechanical properties such as abrasion and corrosion resistance, and is, for example, an Al-Si type, an Al-Cu type, an Al-Mg type.
And the like.
【０００８】ロッド部は、アルミ合金の押出し成形品、
鋳造品あるいは鍛造品など、種々の成形品を使用するこ
とができるが、最も製造しやすいアルミ鋳造品が最適で
ある。これらの成形品は、その成形後に各種表面処理を
施し、機械的強度などを増大させるようにしてもよい。[0008] The rod portion is an aluminum alloy extruded product,
Although various molded products such as a cast product or a forged product can be used, an aluminum cast product that is most easily manufactured is optimal. These molded articles may be subjected to various surface treatments after molding to increase mechanical strength and the like.
【０００９】ロッド部の断面形状は、円形（楕円形を含
む）、角形、Ｄ形、その他の異形形状など、所望の固有
振動数に応じて各種形状を選択でき、例えば、一対のフ
ランジ間をウエブで連結した断面Ｉ形形状が挙げられ
る。この断面Ｉ形形状のロッド部においては、その長さ
方向に所定間隔で補強リブを形成したものであってもよ
い。The cross-sectional shape of the rod portion can be selected from various shapes according to a desired natural frequency, such as a circular shape (including an elliptical shape), a square shape, a D-shape, and other irregular shapes. An I-shaped cross section connected by a web may be used. In the rod portion having the I-shaped cross section, reinforcing ribs may be formed at predetermined intervals in the length direction.
【００１０】また、トルクロッドは、ロッド部と、その
少なくとも一端部に防振ブッシュを圧入するための連結
筒を備えた構成が一般的であるが、これらのロッド部及
び連結筒の両者をアルミ合金製とするのが製造上からも
好適である。The torque rod is generally provided with a rod portion and a connecting cylinder for press-fitting an anti-vibration bush at at least one end thereof. Both the rod portion and the connecting cylinder are made of aluminum. The use of an alloy is preferable from the viewpoint of production.
【００１１】さらに、連結筒に圧入する防振ブッシュに
ついても、ゴム状弾性体の周囲に加硫接着した外筒自体
をアルミ合金製とすれば、トルクロッドの軽量化と共
に、共振点をさらに高周波領域に移行させることができ
る点で有利である。Further, as for the vibration isolating bush which is press-fitted into the connecting cylinder, if the outer cylinder itself, which is vulcanized and bonded around the rubber-like elastic body, is made of an aluminum alloy, the weight of the torque rod is reduced and the resonance point is further increased. This is advantageous in that it can be shifted to a region.
【００１２】[0012]
【発明の実施の形態】図１は本発明の実施形態であるエ
ンジンの防振装置を示す模式的に表した図、図２は同じ
くトルクロッドの断面図である。図示のごとく、トルク
ロッド１は、エンジンＥの上端と車体とを防振的に連結
するもので、エンジンの下側部分は、複数のエンジンマ
ウント２、３により防振的に支承されている。FIG. 1 is a diagram schematically showing an engine vibration isolator according to an embodiment of the present invention, and FIG. 2 is a sectional view of the torque rod. As shown, the torque rod 1 connects the upper end of the engine E and the vehicle body in a vibration-proof manner, and the lower part of the engine is supported by a plurality of engine mounts 2 and 3 in a vibration-proof manner.
【００１３】トルクロッド１は、図２のごとく、ロッド
部５と、その両端に形成された連結筒６，７とを備えて
おり、これらがアルミ合金により一体的に鋳造されてい
る。As shown in FIG. 2, the torque rod 1 has a rod portion 5 and connecting cylinders 6 and 7 formed at both ends thereof, and these are integrally cast from an aluminum alloy.
【００１４】ロッド部５は、一対のフランジ１０，１１
間をウエブ１２で連結した断面Ｉ形形状であって、その
長さ方向に所定間隔で補強リブ１３が形成され，リブ１
３及びフランジ１０，１１並びにウエブ１２で囲まれた
部分がいわゆる肉盗み部分とされている。The rod portion 5 includes a pair of flanges 10 and 11.
The reinforcing ribs 13 are formed at predetermined intervals in the longitudinal direction of the ribs, and the ribs 1 have a cross-sectional shape of I-shape connected by a web 12.
A portion surrounded by the flange 3, the flanges 10, 11 and the web 12 is a so-called meat stealing portion.
【００１５】連結筒６，７は円筒形のものであって、内
部に防振ブッシュ１４が圧入されている。この防振ブッ
シュ１４は、車体あるいはエンジン側ブラケットに連結
される内筒１５と、その周囲に加硫接着された円筒状の
ゴム状弾性体１６とを備え、ゴム状弾性体１６が連結筒
６，７に内嵌圧入されている。内筒１５は、筒状に形成
され、その中央孔１５ａは車体あるいはエンジン側ブラ
ケットに取り付けるボルト（図示略）の貫通孔とされて
いる。The connecting cylinders 6 and 7 are cylindrical and have a vibration isolating bush 14 pressed therein. The anti-vibration bush 14 includes an inner cylinder 15 connected to a vehicle body or an engine-side bracket, and a cylindrical rubber-like elastic body 16 that is vulcanized and bonded therearound. , 7 are press-fitted. The inner cylinder 15 is formed in a tubular shape, and its central hole 15a is a through hole for a bolt (not shown) attached to the vehicle body or the engine side bracket.
【００１６】上記構成のトルクロッド１をエンジン側及
び車体側ブラケットに取り付けた場合、ロッド部５及び
連結筒６，７が従来の鉄製（密度７．８７ｇ/ｃｍ3（２
０℃））からアルミ合金製（（密度２．７１ｇ/ｃｍ
3（２０℃））に変更したので、軽量化され、トルクロ
ッド１の共振点を２００Ｈｚ以上の高周波数領域に移行
させることができ、従来のようにダイナミックダンパー
などがなくても良好な振動減衰特性を得ることができ
る。また、ロッド部５はアルミ合金製であるために加工
しやすく、振動減衰要求特性に応じて、その固有振動数
をチューニングしやすい利点もある。When the torque rod 1 having the above configuration is mounted on the bracket on the engine side and the vehicle body side, the rod portion 5 and the connecting cylinders 6 and 7 are made of conventional iron (density 7.87 g / cm 3 (2
0 ° C)) to aluminum alloy ((density 2.71g / cm
3 (20 ° C.), the weight is reduced, the resonance point of the torque rod 1 can be shifted to a high frequency region of 200 Hz or more, and good vibration damping can be achieved without a dynamic damper as in the conventional case. Properties can be obtained. Further, since the rod portion 5 is made of an aluminum alloy, it is easy to process, and there is an advantage that its natural frequency can be easily tuned according to the required characteristics of vibration damping.
【００１７】図３は他の実施形態を示すトルクロッドの
要部断面図である。この実施形態では、防振ブッシュ１
４を、内筒１５と、その周囲に配された薄肉円筒状の外
筒２１と、内外筒１４、１５間に介在され両者を加硫接
着するゴム状弾性体１６とから構成し、外筒２１を連結
筒６，７に内嵌圧入したもので、トルクロッド１のみな
らず、防振ブッシュ１４の外筒２１をもアルミ合金製と
し、全体をさらに軽量化している。従って、トルクロッ
ド１のさらなる軽量化により、共振点をさらに高周波領
域に移行させることができ、振動減衰特性を良好にし得
る。FIG. 3 is a sectional view of a main part of a torque rod showing another embodiment. In this embodiment, the anti-vibration bush 1
4 comprises an inner cylinder 15, a thin cylindrical outer cylinder 21 disposed around the inner cylinder 15, and a rubber-like elastic body 16 interposed between the inner and outer cylinders 14 and 15 and vulcanizing and bonding the two. The inner cylinder 21 is press-fitted into the connecting cylinders 6 and 7, and not only the torque rod 1 but also the outer cylinder 21 of the vibration isolating bush 14 is made of an aluminum alloy, further reducing the overall weight. Therefore, by further reducing the weight of the torque rod 1, the resonance point can be shifted to a higher frequency region, and the vibration damping characteristics can be improved.
【００１８】なお、本発明は上記実施形態に限定される
ものではなく、本発明の範囲内で多くの修正・変更を加
えることができるのは勿論である。例えば、上記実施形
態ではロッド部と連結筒とを一体成形した例を示した
が、これらを別体で成形した後、両者を一体的に固定す
る手法を採用してもよい。It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made within the scope of the present invention. For example, in the above-described embodiment, an example is shown in which the rod portion and the connecting cylinder are integrally formed. However, a method may be employed in which the rod portion and the connecting tube are formed separately and then both are integrally fixed.
【００１９】[0019]
【発明の効果】以上の説明から明らかな通り、本発明に
よると、トルクロッド部をアルミ合金により軽量化して
共振点を高周波領域に移行させることができるので、良
好な振動減衰特性が得られ、従来のようにダイナミック
ダンパーを使用するよりも軽量化とコストの低減が図れ
る。As is clear from the above description, according to the present invention, the torque rod portion can be reduced in weight by using an aluminum alloy and the resonance point can be shifted to a high frequency region, so that good vibration damping characteristics can be obtained. Lightening and cost reduction can be achieved as compared with the conventional case using a dynamic damper.
【図１】本発明の実施形態であるトルクロッドを使用し
たエンジン防振装置の説明図FIG. 1 is an explanatory view of an engine vibration isolator using a torque rod according to an embodiment of the present invention.
【図２】同じくトルクロッドの断面図FIG. 2 is a sectional view of the same torque rod.
【図３】別の実施形態を示す要部断面図FIG. 3 is a sectional view of a main part showing another embodiment.
１ トルクロッド ２、３ エンジンマウント ５ ロッド部 ６，７ 連結筒 １３ リブ １４ 防振ブッシュ １５ 内筒 １６ ゴム状弾性体 ２１ 外筒 DESCRIPTION OF SYMBOLS 1 Torque rod 2, 3 Engine mount 5 Rod part 6, 7 Connecting cylinder 13 Rib 14 Vibration-proof bush 15 Inner cylinder 16 Rubbery elastic body 21 Outer cylinder
Claims (4)
ロッド部を有するトルクロッドにおいて、前記ロッド部
の素材をアルミニウム合金製とし、前記ロッド部の共振
点を高周波領域側に移行させるようにしたトルクロッ
ド。1. A torque rod having a rod section for connecting an engine side and a vehicle body side in a vibration-proof manner, wherein a material of the rod section is made of an aluminum alloy, and a resonance point of the rod section is shifted to a high frequency region side. Like a torque rod.
成形した請求項１記載のトルクロッド。2. The torque rod according to claim 1, wherein said rod portion is formed from an aluminum casting.
の連結筒を形成し、各連結筒に防振ブッシュを圧入して
なる請求項１又は２記載のトルクロッド。3. The torque rod according to claim 1, wherein a connecting cylinder made of an aluminum alloy is formed at an end of said rod portion, and an anti-vibration bush is pressed into each connecting cylinder.
に加硫接着した外筒を備え、前記外筒をアルミニウム合
金製とした請求項３記載のトルクロッド。4. The torque rod according to claim 3, wherein said vibration-isolating bush has an outer cylinder vulcanized and bonded around a rubber-like elastic body, and said outer cylinder is made of an aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000009984A JP2001200892A (en) | 2000-01-13 | 2000-01-13 | Torque rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000009984A JP2001200892A (en) | 2000-01-13 | 2000-01-13 | Torque rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001200892A true JP2001200892A (en) | 2001-07-27 |
Family
ID=18538056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000009984A Withdrawn JP2001200892A (en) | 2000-01-13 | 2000-01-13 | Torque rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001200892A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007038909A (en) * | 2005-08-04 | 2007-02-15 | Bridgestone Corp | Torque rod |
| WO2007117013A1 (en) | 2006-04-12 | 2007-10-18 | Bridgestone Corporation | Vibration damping support apparatus |
| CN100381298C (en) * | 2004-03-19 | 2008-04-16 | 东海橡胶工业株式会社 | Torque rod |
| CN100406288C (en) * | 2004-03-19 | 2008-07-30 | 东海橡胶工业株式会社 | Resin torsion bar and manufacturing method thereof |
| KR101340454B1 (en) * | 2012-06-12 | 2013-12-12 | 주식회사 티앤지 | Torque rod apparatus and manufacturing method of the torque rod |
| CN107856521A (en) * | 2017-10-24 | 2018-03-30 | 东风汽车公司 | The antitorque suspension of electric car and its attachment structure |
-
2000
- 2000-01-13 JP JP2000009984A patent/JP2001200892A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381298C (en) * | 2004-03-19 | 2008-04-16 | 东海橡胶工业株式会社 | Torque rod |
| CN100406288C (en) * | 2004-03-19 | 2008-07-30 | 东海橡胶工业株式会社 | Resin torsion bar and manufacturing method thereof |
| JP2007038909A (en) * | 2005-08-04 | 2007-02-15 | Bridgestone Corp | Torque rod |
| WO2007117013A1 (en) | 2006-04-12 | 2007-10-18 | Bridgestone Corporation | Vibration damping support apparatus |
| US8500109B2 (en) | 2006-04-12 | 2013-08-06 | Bridgestone Corporation | Vibration damping support apparatus |
| KR101340454B1 (en) * | 2012-06-12 | 2013-12-12 | 주식회사 티앤지 | Torque rod apparatus and manufacturing method of the torque rod |
| WO2013187569A1 (en) * | 2012-06-12 | 2013-12-19 | 주식회사 티앤지 | Torque rod assembly and method for manufacturing torque rod |
| CN104364098A (en) * | 2012-06-12 | 2015-02-18 | 株式会社天技 | Torque rod assembly and method for manufacturing torque rod |
| CN107856521A (en) * | 2017-10-24 | 2018-03-30 | 东风汽车公司 | The antitorque suspension of electric car and its attachment structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20070403 |