JPH0382691A - Steering wheel vibration damping device of small-sized vehicle - Google Patents
Steering wheel vibration damping device of small-sized vehicleInfo
- Publication number
- JPH0382691A JPH0382691A JP21816789A JP21816789A JPH0382691A JP H0382691 A JPH0382691 A JP H0382691A JP 21816789 A JP21816789 A JP 21816789A JP 21816789 A JP21816789 A JP 21816789A JP H0382691 A JPH0382691 A JP H0382691A
- Authority
- JP
- Japan
- Prior art keywords
- steering wheel
- vibration
- upper bracket
- damping device
- vehicle body
- 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.)
- Granted
Links
- 238000013016 damping Methods 0.000 title abstract description 5
- 230000000694 effects Effects 0.000 claims abstract description 8
- 230000005284 excitation Effects 0.000 claims abstract description 3
- 230000002238 attenuated effect Effects 0.000 claims description 2
- 230000001902 propagating effect Effects 0.000 claims description 2
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Landscapes
- Steering Devices For Bicycles And Motorcycles (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は小型車両のハンドル振動軽減装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a steering wheel vibration reduction device for a small vehicle.
（従来の技術）
小型車両、なかでもオートバイの場合、ハンドルの左右
先端側は車体に支持されていないため、エンジンの回転
に伴なう振動が車体フレームを通じてハンドルに伝播さ
れたとき振動を受けやすく、その振動は主として車体の
前後方向への振幅となって発生し、これがエンジンの回
転数に共振して増幅するためライダーに著しい不快感を
与える。(Prior art) In the case of small vehicles, especially motorcycles, the left and right ends of the handlebars are not supported by the vehicle body, so they are susceptible to vibrations when vibrations caused by engine rotation are transmitted to the handlebars through the vehicle body frame. The vibration mainly occurs as an amplitude in the longitudinal direction of the vehicle body, and this resonates with the engine rotational speed and is amplified, causing significant discomfort to the rider.
したがってこの種のバーハンドルにおいては、共振周波
数とエンジン回転数とが一致する共振点での振動レベル
を下げることが重要である。Therefore, in this type of bar handle, it is important to reduce the vibration level at the resonance point where the resonance frequency and engine rotational speed match.
従来では、第９図に片側のみの断面を示すように、オー
トバイの左右フロントフォークａの上端に固定されるア
ッパブラケットｂにゴム専の弾性体Ｃを貫設し、この弾
性体Ｃに挿通ずるボルトｄによりハンドルバーｅを固定
するとともにアッパブラケットｂの端部とハンドルバー
ｅとの間に＋９１じく弾性体ｆを介在させ、これらによ
りハンドルバーｅをアッパブラケットｂに浮動的に支持
し、これら弾性体ｃ、 ｆによりハンドルバーｅに車
体の振動が直接伝わらないようになされたもの、あるい
は第１０図にハンドル先端部の断面を示すように、ハン
ドルバーｅの端部に弾性体ｇを介してグリップ部り内に
重Ｗｉｔをボルトｊで固定し、７％ンドルバーｅの共振
の節を変化させてグリップ部りの振幅を小さくするよう
になされたもの（特開昭６０−１５７９７５号公報）が
ある。Conventionally, as shown in the cross section of only one side in Fig. 9, an elastic body C made exclusively for rubber is provided through an upper bracket b fixed to the upper ends of the left and right front forks a of a motorcycle, and the elastic body C is inserted through this elastic body C. The handlebar e is fixed by a bolt d, and a +91 elastic body f is interposed between the end of the upper bracket b and the handlebar e, and the handlebar e is supported in a floating manner by the upper bracket b, These elastic bodies c and f prevent the vibrations of the vehicle body from being directly transmitted to the handlebar e, or as shown in Figure 10, which shows a cross section of the tip of the handlebar, an elastic body g is attached to the end of the handlebar e. A heavy weight Wit is fixed in the grip part with a bolt j through the handle, and the resonance node of the 7% turn bar e is changed to reduce the amplitude of the grip part (Japanese Patent Application Laid-Open No. 157975/1983). ).
（発明が解決しようとする課題）
しかるにハンドルバーｅの取付部に弾性体Ｃ１ｆを介在
させる浮動支持構造では、振動減衰効果を挙げるために
軟質な弾性材を使用すると、ノ＼ンドルバーｅをセット
したのちの操縦安定性が損なわれ、ロードスポーツモデ
ル車などではｌ＼ンドルがぐらついてライダーに不安感
を与えることになる。さりとてこの弾性体ｃ、 ｆを
硬質ゴム等の硬い材料にすると、振動吸収能力が低くな
り、振動減衰効果が挙がらなくなるという欠点がある。(Problem to be Solved by the Invention) However, in a floating support structure in which an elastic body C1f is interposed at the attachment part of the handlebar e, if a soft elastic material is used to achieve a vibration damping effect, it is difficult to set the handlebar e. Later on, the steering stability will be impaired, and in road sports model cars, the steering wheel will become wobbly, giving the rider a sense of anxiety. If the elastic bodies c and f of the sill and lever are made of a hard material such as hard rubber, there is a drawback that the vibration absorption ability will be lowered and the vibration damping effect will not be achieved.
またハンドルグリップ部り内に重錘ｉを設けて共振時の
節を変えるようにするものでは、内蔵する重錘ｉの大き
さに外観上の問題もあって限度があり、完全に振動を防
ぐことが難かしいという問題がある。In addition, in the case where a weight i is installed inside the handle grip part to change the node at the time of resonance, there is a limit to the size of the built-in weight i due to problems in appearance, and vibration can be completely prevented. The problem is that it is difficult.
本発明はこれに鑑み、従来のゴム質の弾性体による防振
手段を用いることなくハンドルの振動を軽減することが
できる小型車両のハンドル振動軽減装置を提供すること
を目的としてなされたものである。In view of this, the present invention has been made for the purpose of providing a steering wheel vibration reduction device for a small vehicle that can reduce steering wheel vibration without using conventional vibration isolating means using rubber elastic bodies. .
（課題を解決するための手段）
上記従来技術の有する課題を解決するため、本発明は、
車体前部に設けられるハンドル取付部材にその振動方向
に対向する加振力を得るダンパウェイトを設け、車体か
らハンドルに伝播する振動をダイナミックダンパ効果に
より減衰するようにしたことを特徴とするものである。(Means for Solving the Problems) In order to solve the problems of the above-mentioned prior art, the present invention provides the following:
The steering wheel mounting member provided at the front of the vehicle body is provided with a damper weight that generates an excitation force opposite to the vibration direction of the steering wheel mounting member, so that vibrations propagating from the vehicle body to the steering wheel are attenuated by a dynamic damper effect. be.
（作 用）
エンジンの回転により発生する重体の振動がＩ＼ンドル
に伝播する際にその振動対向方向に偏倚するダンパウェ
イトの動きにより打消され、ハンドル系の共振周波数と
エンジンの回転数が一致する共振点での振動レベルが下
げられる。(Function) When the vibration of the heavy body generated by the rotation of the engine is propagated to the I/handle, it is canceled by the movement of the damper weight that is biased in the opposite direction of the vibration, and the resonance frequency of the handle system and the rotation speed of the engine match. The vibration level at the resonance point is reduced.
（実施例） 以下、本発明を図面に示す実施例を参照して説明する。(Example) The present invention will be described below with reference to embodiments shown in the drawings.
第７図は小型車両としてオートバイを例示しており、こ
のオートバイのフロントフォーク１の上端に固定されて
ハンドルパー２を取付ける／Ｘンドル取付部材としての
アッパブラケット３に振動軽減装置４が設けられている
。FIG. 7 shows a motorcycle as an example of a small vehicle, and a vibration reducing device 4 is provided on an upper bracket 3 that is fixed to the upper end of the front fork 1 of the motorcycle and has a handlebar 2 attached thereto. There is.
この振動軽減装置４は、第１図に示すように、アッパブ
ラケット３の左右対称位置に設けられるもので、第１図
および第２図示の実施例では、アッパブラケット３に前
端が開放された穴５．５が形成され、この穴５，５内に
皿バネ６、ダンパウェイト７、皿バネ８の順に嵌挿され
、穴５．５の開放端にキャップ９がネジ込み等により固
着されてこれら部材を穴５，５内に保持し、前後の旧バ
ネ６．８でダンパウェイトを前後方向可動に支持してい
る。As shown in FIG. 1, this vibration reducing device 4 is provided at a symmetrical position on the upper bracket 3, and in the embodiment shown in FIGS. 5.5 is formed, and a disc spring 6, a damper weight 7, and a disc spring 8 are fitted into the holes 5, 5 in this order, and a cap 9 is fixed to the open end of the hole 5.5 by screwing or the like. The members are held in the holes 5, 5, and the damper weight is supported so as to be movable in the front and rear direction by the front and rear old springs 6,8.
第３図および第４図に示す実施例は、振動軽減装置４を
別体構成としてアッパブラケット３に取付けるようにし
たもので、穴１０を有する軸受形状の本体１１に取付用
の座１２．１２が一体に設けられ、この本体１１の穴１
０の両端は本体１１にボルト１３．１３等で固定される
キャップ１４゜１４で封止され、これらキャップ１４．
１４間で皿バネ６、ダンパウェイト７、皿バネ８を支持
するようになっており、本体１１の取付用圧１２゜１２
に通すボルトでアッパブラケット３の面に左右一対取付
けて振動軽減装置４が構成されるようになっている。In the embodiment shown in FIGS. 3 and 4, the vibration reducing device 4 is constructed as a separate component and is attached to the upper bracket 3, and a bearing-shaped main body 11 having a hole 10 is provided with a mounting seat 12.12. is integrally provided, and the hole 1 of this main body 11
Both ends of the cap 14.0 are sealed with caps 14.14 fixed to the main body 11 with bolts 13.13, etc.
14 to support the disc spring 6, damper weight 7, and disc spring 8, and the mounting pressure of the main body 11 is 12°12.
The vibration reducing device 4 is constructed by attaching a left and right pair to the surface of the upper bracket 3 using bolts that pass through.
第５図および第６図はさらに他の実施例を示すもので、
アッパブラケット３の前端面にプレート１５．１５で挟
んだゴム１６（またはバネでもよい）と、その外面にダ
ンパウェイト７とを置いてボルト１７等によりアッパブ
ラケット３に取付けたものである。FIG. 5 and FIG. 6 show still other embodiments,
A rubber 16 (or a spring may be used) sandwiched between plates 15 and 15 on the front end surface of the upper bracket 3, and a damper weight 7 placed on the outer surface thereof are attached to the upper bracket 3 with bolts 17 or the like.
いずれの実施例においても、車体と一体化されてハンド
ルを取付けるアッパブラケット３にダンパウェイト７が
前後方向可動に設けられているので、エンジンの回転数
により共振する周波数のときダンパウェイト７の前後動
がこの共振を打消す力として作用し、ハンドルの振動レ
ベルを低下させる。In either embodiment, the damper weight 7 is movable in the longitudinal direction on the upper bracket 3 that is integrated with the vehicle body and to which the handlebar is attached. acts as a force to cancel this resonance, reducing the vibration level of the handle.
実験結果によれば、第８図にグラフを示すように、従来
は細線Ａで示すようにエンジン回転数が１０．０００ｒ
、ｐ、ｍ付近で最も振動レベルが高く、そのピークで共
振が生じていたものが、同図に太線Ｂで示すように共振
点がずれ、ハンドルの振動レベルを大巾に下げることが
できた。According to the experimental results, as shown in the graph of Fig. 8, conventionally the engine speed was 10.000 r as shown by thin line A.
The vibration level was highest near , p, and m, and resonance occurred at the peak, but the resonance point shifted as shown by thick line B in the figure, and the vibration level of the handle was able to be significantly lowered. .
以上説明したように本発明によれば、エンジンの回転に
伴なって振動する車体の振動とハンドルとの共振時の振
動源となるハンドル取付部材に前後方向に可動なダンパ
ウェイトを設け、このウェイトによるダイナミックダン
パ効果によりハンドルの共振を防ぐようにしたので、ハ
ンドルの振動レベルを大巾に低減することができ、ハン
ドルバーを浮動支持構造とする必要がないのでハンドル
による操縦安定性が損なわれず、さらにハンドルに重錘
を内蔵するものと異なリウエイトの大きさに制約を受け
ることがなく、選択の自由度が増し、外観上においても
制約を受けないなどの種々の効果がある。As explained above, according to the present invention, a damper weight that is movable in the front and rear direction is provided on the steering wheel mounting member, which is a source of vibration when the vehicle body vibrates as the engine rotates and resonates with the steering wheel. The dynamic damper effect prevents resonance of the handlebars, so the vibration level of the handlebars can be greatly reduced, and since the handlebars do not need to have a floating support structure, the steering stability of the handlebars is not compromised. Furthermore, there is no restriction on the size of the reweight unlike when a weight is built into the handle, increasing the degree of freedom of selection, and there are various effects such as no restrictions on appearance.
第１図は本発明の一実施例を示す要部を断面とした平面
図、第２図は第１図Ａ−Ａ線相当の断面図、第３図は他
の実施例を示す水平断面図、第４図は第３図Ｂ−Ｂ線相
当の断面図、第５図はさらに他の実施例を示す平面図、
第６図は同半部ポ面図、第７図は本発明を適用する小型
車両の一例を示す側面図、第８図は従来技術と本発明と
の７）ンドルの振動レベルを示すグラフ、第９図および
第１０図は従来技術を示す断面図である。
１・・・フロントフォーク、２・・・ハンドルパー３・
・・アッパブラケット、４・・・振動軽減装置、６．８
・・・皿バネ、７・・・ダンパウェイト。Fig. 1 is a plan view showing an embodiment of the present invention with main parts in section, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a horizontal sectional view showing another embodiment. , FIG. 4 is a sectional view corresponding to line B-B in FIG. 3, and FIG. 5 is a plan view showing another embodiment.
FIG. 6 is a half-portion view of the same, FIG. 7 is a side view showing an example of a small vehicle to which the present invention is applied, and FIG. 8 is a graph showing the vibration level of the 7) steering wheel between the prior art and the present invention. FIGS. 9 and 10 are cross-sectional views showing the prior art. 1...Front fork, 2...Handlebar 3.
...Upper bracket, 4...Vibration reduction device, 6.8
... disc spring, 7... damper weight.
Claims (1)
に対向する加振力を得るダンパウェイトを前後方向可動
に設け、車体からハンドルに伝播する振動をダイナミッ
クダンパ効果により減衰するようにしたことを特徴とす
る小型車両のハンドル振動軽減装置。The steering wheel mounting member provided at the front of the vehicle body is equipped with a damper weight that is movable in the front and rear direction to generate an excitation force opposite to the vibration direction of the steering wheel mounting member, so that vibrations propagating from the vehicle body to the steering wheel are attenuated by a dynamic damper effect. Steering wheel vibration reduction device for small vehicles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21816789A JP2785208B2 (en) | 1989-08-24 | 1989-08-24 | Steering wheel vibration reduction device for small vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21816789A JP2785208B2 (en) | 1989-08-24 | 1989-08-24 | Steering wheel vibration reduction device for small vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0382691A true JPH0382691A (en) | 1991-04-08 |
| JP2785208B2 JP2785208B2 (en) | 1998-08-13 |
Family
ID=16715680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21816789A Expired - Lifetime JP2785208B2 (en) | 1989-08-24 | 1989-08-24 | Steering wheel vibration reduction device for small vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2785208B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6817456B2 (en) * | 2001-03-30 | 2004-11-16 | Tokai Rubber Industries, Ltd. | Dynamic damper for steering system |
| CN105952601A (en) * | 2016-06-27 | 2016-09-21 | 温州大学 | Power generation device based on mountain bike spring damping system |
| CN106856677A (en) * | 2017-04-07 | 2017-06-20 | 郑修兴 | A kind of mini-tiller |
-
1989
- 1989-08-24 JP JP21816789A patent/JP2785208B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6817456B2 (en) * | 2001-03-30 | 2004-11-16 | Tokai Rubber Industries, Ltd. | Dynamic damper for steering system |
| CN105952601A (en) * | 2016-06-27 | 2016-09-21 | 温州大学 | Power generation device based on mountain bike spring damping system |
| CN105952601B (en) * | 2016-06-27 | 2018-08-07 | 温州大学 | One kind being based on mountain bike spring shock-absorbing system power generator |
| CN106856677A (en) * | 2017-04-07 | 2017-06-20 | 郑修兴 | A kind of mini-tiller |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2785208B2 (en) | 1998-08-13 |
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