JP2001114177A - Operating lever of hydraulic master cylinder for bar handle vehicle - Google Patents
Operating lever of hydraulic master cylinder for bar handle vehicleInfo
- Publication number
- JP2001114177A JP2001114177A JP29796399A JP29796399A JP2001114177A JP 2001114177 A JP2001114177 A JP 2001114177A JP 29796399 A JP29796399 A JP 29796399A JP 29796399 A JP29796399 A JP 29796399A JP 2001114177 A JP2001114177 A JP 2001114177A
- Authority
- JP
- Japan
- Prior art keywords
- master cylinder
- lever
- hydraulic master
- operating lever
- operation lever
- 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.)
- Pending
Links
Landscapes
- Mechanical Control Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動二輪車を始
め、車体前部に操向用のハンドルバーを備える自動三輪
車や三・四輪バギー車，スノーモビル等のバーハンドル
車両にあって、ハンドルバーに取付けた液圧マスタシリ
ンダに液圧を発生させてブレーキやクラッチを作動する
ブレーキレバーやクラッチレバー等のバーハンドル車両
用操作レバーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar-handle vehicle such as a motorcycle, a motorcycle, a three- or four-wheel buggy, a snowmobile and the like having a steering handlebar at a front portion of a vehicle body. The present invention relates to an operation lever for a bar handle vehicle such as a brake lever or a clutch lever that operates a brake or a clutch by generating a hydraulic pressure in a hydraulic master cylinder mounted on a vehicle.
【０００２】[0002]
【従来の技術】例えば、駐輪場等でスタンド掛けしてあ
るバーハンドル車両に人が接触するなどしてバーハンド
ル車両が転倒した場合に、レバーエンドと呼ばれる操作
レバーの長手方向先端側に不慮の外力が加わると、その
外力が液圧マスタシリンダやレバーブラケット等にも伝
わり、液圧マスタシリンダやレバーブラケット等の操作
レバー以外の部所にも損傷を来す虞があった。2. Description of the Related Art For example, when a bar-handle vehicle falls down due to contact with a bar-handle vehicle on a stand in a bicycle parking lot or the like, an unexpected external force is applied to a longitudinal end of an operation lever called a lever end. When the force is applied, the external force is transmitted to the hydraulic master cylinder, the lever bracket, and the like, and there is a possibility that parts other than the operation lever, such as the hydraulic master cylinder and the lever bracket, may be damaged.
【０００３】このため、操作レバーに加わった外力によ
って操作レバー自体を破損させ、液圧マスタシリンダや
レバーブラケット等に影響を及ぼさないようにしたバー
ハンドル車両用液圧マスタシリンダが提案されている。For this reason, there has been proposed a hydraulic master cylinder for a bar handle vehicle in which an external force applied to the operating lever damages the operating lever itself and does not affect the hydraulic master cylinder, the lever bracket, and the like.
【０００４】例えば、実開平２−１００８９３号公報で
は、操作レバーの長手方向先端側に、断面円形の貫通孔
若しくはハンドルバー側に開口する円形の凹部を形成し
て、操作レバーに加わった外力によって、貫通孔または
凹部を折損するようにしている。[0004] For example, in Japanese Utility Model Laid-Open No. 2-100893, a through hole having a circular cross section or a circular concave portion opening toward the handlebar is formed at the longitudinal end of the operating lever, and an external force applied to the operating lever. , Through holes or recesses are broken.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、本出願
人が種々の実験を行った結果では、外力が作用する操作
レバーの長手方向先端側に上述の如き貫通孔や凹部を設
けても、操作レバーを確実に折損させることは困難であ
ることが分かった。However, as a result of various experiments conducted by the present applicant, it has been found that even if the through hole or the recess as described above is provided at the longitudinal end side of the operating lever to which an external force acts, the operating lever is not moved. It has been found that it is difficult to reliably break.
【０００６】そこで本発明は、操作レバーに不慮の外力
が加わった場合、操作レバーを確実に折損させて、外力
が液圧マスタシリンダやレバーブラケット等の操作レバ
ー以外の部所に伝達されることを防止し、操作レバー以
外の部所に極力損傷を及ばせないようにしたバーハンド
ル車両用液圧マスタシリンダの操作レバーを提供するこ
とを目的としている。Accordingly, the present invention is to prevent the operation lever from being broken when an unexpected external force is applied to the operation lever, and to transmit the external force to a portion other than the operation lever, such as a hydraulic master cylinder or a lever bracket. It is an object of the present invention to provide an operating lever of a hydraulic master cylinder for a bar handle vehicle, which prevents the parts other than the operating lever from being damaged as much as possible.
【０００７】[0007]
【課題を解決するための手段】上記の目的に従って、第
１の発明では、ハンドルバーの車体前部側で、液圧マス
タシリンダのレバーブラケットにピボットを用いて回動
可能に軸支し、前記液圧マスタシリンダのシリンダ孔に
内挿されたピストンを作用腕を用いて押動するバーハン
ドル車両用液圧マスタシリンダの操作レバーにおいて、
該操作レバーの入力点と前記ピボットとの間で、操作レ
バーのハンドルバー対向面に、折損用の溝を操作レバー
の厚さ方向に設けたことを特徴としている。According to a first aspect of the present invention, a lever bracket of a hydraulic master cylinder is pivotally supported on a lever bracket of a hydraulic master cylinder by a pivot at a front side of a vehicle body of the handlebar. An operating lever of a hydraulic master cylinder for a bar handle vehicle, which pushes a piston inserted into a cylinder hole of a hydraulic master cylinder using an operation arm,
Between the input point of the operation lever and the pivot, a breakage groove is provided on a surface of the operation lever facing the handlebar in a thickness direction of the operation lever.
【０００８】また、第２の発明では、前記操作レバーの
ハンドルバー対向面に肉抜き部を設け、該肉抜き部の内
壁に前記折損用の溝を設けたことを特徴としている。The second invention is characterized in that a lightening portion is provided on the handlebar facing surface of the operating lever, and the breakage groove is provided on an inner wall of the lightening portion.
【０００９】[0009]
【発明の実施の形態】以下、本発明の一形態例を図面に
基づいてさらに詳しく説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in more detail with reference to the drawings.
【００１０】バーハンドル車両の車体前部で前輪を操向
するハンドルバー１には、液圧マスタシリンダ２と操作
レバー３とを組合せたフロントブレーキ用の液圧マスタ
シリンダ装置４が取付けられている。A handlebar 1 for steering the front wheels at the front of the vehicle body of a bar handle vehicle is provided with a hydraulic master cylinder device 4 for a front brake, which is a combination of a hydraulic master cylinder 2 and an operating lever 3. .
【００１１】液圧マスタシリンダ２は、ハンドルバー１
のアクセルグリップ５よりも車体内側位置を、シリンダ
ボディ２ａと一体の取り付けブラケット２ｂとホルダ２
ｃとで包持し、これらをボルトで締結してハンドルバー
１に取付けられる。シリンダボディ２ａの車体前部側に
は、上下一対のレバーブラケット２ｄ，２ｄが突設され
ており、操作レバー３は、回動基部３ａをレバーブラケ
ット２ｄ，２ｄの間に差し入れてピボット６にて枢着
し、握り操作部３ｂをアクセルグリップ５の車体前部側
に配設して回動可能に取り付けされる。また、シリンダ
ボディ２ａには、有底のシリンダ孔２ｅが形成され、シ
リンダ孔２ｅには、ピストン７が液密且つ移動可能に内
挿される。The hydraulic master cylinder 2 comprises a handlebar 1
Of the vehicle body with respect to the accelerator grip 5, the mounting bracket 2b and the holder 2 integrated with the cylinder body 2a.
c, and these are fastened with bolts and attached to the handlebar 1. A pair of upper and lower lever brackets 2d, 2d protrude from the cylinder body 2a on the front side of the vehicle body, and the operation lever 3 is configured such that the rotation base 3a is inserted between the lever brackets 2d, 2d and the pivot 6 is used. It is pivotally mounted, and the grip operation part 3b is arranged on the front side of the accelerator grip 5 on the vehicle body, and is attached rotatably. Further, a bottomed cylinder hole 2e is formed in the cylinder body 2a, and a piston 7 is inserted in the cylinder hole 2e so as to be liquid-tight and movable.
【００１２】操作レバー３は、握り操作部３ｂを前述の
如くアクセルグリップ５の車体前部側に沿って延出し、
作用腕３ｃをシリンダ孔２ｅの開口部側へ突出させて、
該作用腕３ｃにてピストン７の後端を支持している。握
り操作部３ｂには、車体前部側の所定位置に、ライダー
が握り操作した際の操作力の入力点Ｐ１が設定されてお
り、この入力点Ｐ１とピボット６との間で、且つ握り操
作部３ｂのハンドルバー対向面３ｆには肉抜き部３ｄ
が、また入力点Ｐ１と握り操作部３ｂの先端３ｇとの間
で、且つ握り操作部３ｂのハンドルバー対向面３ｆには
肉抜き部３ｅがそれぞれ形成され、さらに内側の肉抜き
部３ｄの内周壁には、操作レバー３の厚さ方向に溝８が
形成されている。The operating lever 3 extends the grip operating section 3b along the vehicle body front side of the accelerator grip 5 as described above.
The working arm 3c is projected toward the opening of the cylinder hole 2e,
The rear end of the piston 7 is supported by the working arm 3c. An input point P1 of an operating force when the rider performs a grip operation is set in a predetermined position on the front side of the vehicle body in the grip operation section 3b, and the grip operation is performed between the input point P1 and the pivot 6. The lightening portion 3d is provided on the handlebar facing surface 3f of the portion 3b.
A lightening portion 3e is formed between the input point P1 and the tip 3g of the gripping operation portion 3b and on the handlebar facing surface 3f of the gripping operation portion 3b. A groove 8 is formed in the peripheral wall in the thickness direction of the operation lever 3.
【００１３】上記溝８は、例えば、バーハンドル車両が
駐輪場等でのスタンド掛け状態から転倒し、操作レバー
３の長手方向先端側に外力が加わった場合に、当該溝８
から容易に折れるようにしたもので、上述の如く溝８を
ハンドルバー対向面３ｆの入力点Ｐ１とピボット６との
間で且つ厚さ方向に形成することによって、溝８の切り
込み深さや幅を極力小さく抑えながら、当該溝８での折
損を確実に行うことができる。For example, when the bar handle vehicle falls down from a stand-mounted state in a bicycle parking lot or the like and an external force is applied to the longitudinal end of the operation lever 3, the groove 8 is formed.
By forming the groove 8 between the input point P1 of the handlebar facing surface 3f and the pivot 6 and in the thickness direction as described above, the cut depth and width of the groove 8 can be reduced. The breakage in the groove 8 can be surely performed while keeping the groove as small as possible.
【００１４】この結果、操作レバー３への外力が溝８の
折損によって液圧マスタシリンダ２に伝達されることが
極力防止されるので、シリンダボディ２ａやレバーブラ
ケット２ｄ，２ｄ、取付けブラケット２ｂに損傷を及ぼ
すことを防止でき、修理にあたっては、比較的安価な操
作レバー３を交換するだけで済む。また、操作レバー３
が折損しても、液圧マスタシリンダ２の機能は正常に保
たれるため、折れ残った操作レバー３の入力点Ｐ１から
基端側の部分を回動して、液圧マスタシリンダ２を作動
させることができる。さらに本形態例は、溝８を薄肉と
なった肉抜き部３ｄに設けているので、溝８からの折損
をより確実に行うことができるようになる。As a result, transmission of the external force to the operating lever 3 to the hydraulic master cylinder 2 due to breakage of the groove 8 is prevented as much as possible, so that the cylinder body 2a, the lever brackets 2d, 2d, and the mounting bracket 2b are damaged. Can be prevented, and for repair, only the relatively inexpensive operating lever 3 needs to be replaced. The operation lever 3
Even if is broken, the function of the hydraulic master cylinder 2 is maintained normally, so that the hydraulic lever master cylinder 2 is operated by rotating the part of the operation lever 3 that has been broken away from the input point P1 on the base end side. Can be done. Further, in the present embodiment, since the groove 8 is provided in the thinned portion 3d, the breakage from the groove 8 can be more reliably performed.
【００１５】尚、上述の形態例では、折損用の溝を肉抜
き部との組み合わせで説明したが、本発明は、少なくと
も折損用の溝をハンドルバー対向面の入力点とピボット
との間で且つ厚さ方向に形成すればよく、肉抜き部は省
略しても差し支えない。In the above-described embodiment, the break groove is described in combination with the lightening portion. However, in the present invention, at least the break groove is formed between the input point of the handlebar facing surface and the pivot. Further, it may be formed in the thickness direction, and the lightening portion may be omitted.
【００１６】[0016]
【発明の効果】以上説明したように、第１発明によれ
ば、操作レバーの入力点とピボットとの間のハンドルバ
ー対向面に、折損用の溝を操作レバーの厚さ方向に設け
たので、操作レバーに不慮の外力が加わった場合に、操
作レバーをこの溝から確実に折損させることができる。
これにより、車体の修理にあたっては、比較的安価な操
作レバーを交換するだけで済み、さらに操作レバーが折
損しても、液圧マスタシリンダの機能が正常に保たれる
ため、折れ残った操作レバーの入力点から基端側の部分
を回動して、液圧マスタシリンダを作動させることがで
きる。As described above, according to the first aspect of the present invention, the breakage groove is provided in the thickness direction of the operation lever on the handlebar facing surface between the input point of the operation lever and the pivot. When an unexpected external force is applied to the operation lever, the operation lever can be reliably broken from the groove.
As a result, when repairing the vehicle body, it is only necessary to replace the relatively inexpensive operating lever, and even if the operating lever is broken, the function of the hydraulic master cylinder is maintained normally, so the broken operating lever The hydraulic master cylinder can be operated by rotating the base end portion from the input point of (1).
【００１７】また、第２発明によれば、操作レバーのハ
ンドルバー対向面に肉抜き部を設け、該肉抜き部の内壁
に前述の折損用の溝を設けるようにしたので、操作レバ
ーに不慮の外力が加わった場合に、この溝より確実に操
作レバーを折損させることができる。According to the second aspect of the present invention, the lightening portion is provided on the handlebar facing surface of the operating lever, and the above-described groove for breaking is provided on the inner wall of the lightening portion. When the external force is applied, the operation lever can be reliably broken from the groove.
【図１】 本発明の一形態例を示す液圧マスタシリンダ
装置の一部断面平面図FIG. 1 is a partial cross-sectional plan view of a hydraulic master cylinder device showing one embodiment of the present invention.
【図２】 図１のII−II断面図FIG. 2 is a sectional view taken along line II-II of FIG.
【図３】 本発明の一形態例を示す操作レバーの斜視図FIG. 3 is a perspective view of an operation lever showing one embodiment of the present invention.
１…ハンドルバー、２…液圧マスタシリンダ、２ａ…シ
リンダボディ、２ｂ…取付けブラケット、２ｃ…ホル
ダ、２ｄ…レバーブラケット、３…操作レバー、３ｂ…
握り操作部、３ｃ…作用腕、３ｄ，３ｅ…肉抜き部、３
ｆ…ハンドルバー対向面、４…液圧マスタシリンダ装
置、５…アクセルグリップ、６…ピボット、７…ピスト
ン、８…溝、Ｐ１…入力点DESCRIPTION OF SYMBOLS 1 ... Handlebar, 2 ... Hydraulic master cylinder, 2a ... Cylinder body, 2b ... Mounting bracket, 2c ... Holder, 2d ... Lever bracket, 3 ... Operation lever, 3b ...
Grip operation part, 3c: working arm, 3d, 3e: lightening part, 3
f: Handlebar facing surface, 4: Hydraulic master cylinder device, 5: Accelerator grip, 6: Pivot, 7: Piston, 8: Groove, P1: Input point
Claims (2)
タシリンダのレバーブラケットにピボットを用いて回動
可能に軸支し、前記液圧マスタシリンダのシリンダ孔に
内挿されたピストンを作用腕を用いて押動するバーハン
ドル車両用液圧マスタシリンダの操作レバーにおいて、
該操作レバーの入力点と前記ピボットとの間で、操作レ
バーのハンドルバー対向面に、折損用の溝を操作レバー
の厚さ方向に設けたことを特徴とするバーハンドル車両
用液圧マスタシリンダの操作レバー。At the front side of a vehicle body of a handlebar, a pivot is pivotally supported on a lever bracket of a hydraulic master cylinder using a pivot, and a piston inserted into a cylinder hole of the hydraulic master cylinder acts. In the operation lever of the hydraulic master cylinder for a bar handle vehicle that is pushed using an arm,
A hydraulic master cylinder for a bar handle vehicle, wherein a breakage groove is provided in a thickness direction of the operation lever between an input point of the operation lever and the pivot on a handle bar facing surface of the operation lever. Operating lever.
肉抜き部を設け、該肉抜き部の内壁に前記折損用の溝を
設けたことを特徴とする請求項１記載のバーハンドル車
両用液圧マスタシリンダの操作レバー。2. The liquid for a bar handle vehicle according to claim 1, wherein a lightening portion is provided on a surface of the operation lever facing the handlebar, and the groove for breaking is provided on an inner wall of the lightening portion. Operating lever of pressure master cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29796399A JP2001114177A (en) | 1999-10-20 | 1999-10-20 | Operating lever of hydraulic master cylinder for bar handle vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29796399A JP2001114177A (en) | 1999-10-20 | 1999-10-20 | Operating lever of hydraulic master cylinder for bar handle vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001114177A true JP2001114177A (en) | 2001-04-24 |
Family
ID=17853368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29796399A Pending JP2001114177A (en) | 1999-10-20 | 1999-10-20 | Operating lever of hydraulic master cylinder for bar handle vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001114177A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180297625A1 (en) * | 2015-10-08 | 2018-10-18 | Trw Limited | A Lever For A Steering Column Assembly |
-
1999
- 1999-10-20 JP JP29796399A patent/JP2001114177A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180297625A1 (en) * | 2015-10-08 | 2018-10-18 | Trw Limited | A Lever For A Steering Column Assembly |
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