JPH0318312Y2

JPH0318312Y2 -

Info

Publication number: JPH0318312Y2
Application number: JP1986016237U
Authority: JP
Priority date: 1986-02-06
Filing date: 1986-02-06
Publication date: 1991-04-17
Also published as: JPS62127884U

Description

[Detailed explanation of the idea] [Industrial application field]

この考案は、自転車用ブレーキレバーの改良に
係り、特にレバー本体が合成樹脂で成型されるも
のに関する。 This invention relates to an improvement of a bicycle brake lever, and particularly to one in which the lever body is molded from synthetic resin.

[Conventional technology]

従来、ドロツプハンドル等に取付けられる自転
車用ブレーキレバーとして第４図で示す如く、自
転車のハンドルＨを囲繞するバンドＣをレバーブ
ラケツトＢの中空内で上下方向に締付ける取付ボ
ルトＶを設けてレバーブラケツトＢをハンドルＨ
に固着すると共に、該レバーブラケツトＢの中空
にレバー本体Ｌの基端側に形成された左右一対の
側壁Ｓ１，Ｓ２を嵌込み、上記レバーブラケツト
Ｂを横方向に貫通する枢軸Ｐで共締めしてレバー
本体ＬをレバーブラケツトＢに枢着する構成が知
られている。ここでレバー本体Ｌは鉄材や非鉄金属で成型さ
れているので強度に優れるが、製作にコストや時
間がかかるという欠点があつた。そこで素材に成型が容易でコストが廉価な合成
樹脂材用をいることが考えられるが、未だ十分な
強度を有するブレーキレバーは提案されていな
い。例えば実開昭59−54388号には合成樹脂材の
レバーが開示されているが、この場合、レバーを
ハンドルに取り付けるには、従来のブラケツトと
バンドを用いることができず、両者を一体にした
レバーハウジングを用いる必要があり、汎用性に
乏しいと共に、ハンドルへの固定力にも問題があ
る。 Conventionally, as shown in FIG. 4, a bicycle brake lever attached to a drop handlebar or the like has been provided with a mounting bolt V for vertically tightening a band C surrounding the handlebar H of the bicycle within the hollow of the lever bracket B. Handle H
At the same time, a pair of left and right side walls S1 and S2 formed on the proximal end side of the lever body L are fitted into the hollow of the lever bracket B, and are fastened together with a pivot P passing through the lever bracket B in the lateral direction. A configuration in which the lever main body L is pivotally connected to the lever bracket B is known. Here, the lever main body L is molded from a ferrous material or a non-ferrous metal, so it has excellent strength, but it has the drawback of being costly and time-consuming to manufacture. Therefore, it may be possible to use a synthetic resin material that is easy to mold and inexpensive, but a brake lever with sufficient strength has not yet been proposed. For example, Japanese Utility Model Application Publication No. 59-54388 discloses a lever made of synthetic resin, but in this case, it was not possible to use the conventional bracket and band to attach the lever to the handle, so it was necessary to integrate both. It is necessary to use a lever housing, which lacks versatility, and there is also a problem with the strength of fixing it to the handle.

[Problem that the invention attempts to solve]

この考案は上記事情に鑑みて鋭意研究の結果創
案されたものであつて、その主たる課題は、レバ
ー本体の素材として合成樹脂材を用いて、ブレー
キレバーとして十分な強度を有する自転車用ブレ
ーキレバーを提供するにある。 This idea was devised as a result of intensive research in view of the above circumstances, and its main problem was to create a bicycle brake lever with sufficient strength as a brake lever by using synthetic resin as the material for the lever body. It is on offer.

[Means to solve the problem]

この考案は上記課題を解決するために、レバー
ブラケツトの中空内にレバー本体の基端に形成さ
れた左右一対の側壁を嵌込み、その重合部分に横
向きに枢軸を嵌挿してレバー本体をレバーブラケ
ツトに枢動可能に取付けると共に、上記枢軸の中
途部で取付ボルトを縦向きに嵌挿して頭部を枢軸
に係止し先端側で自転車のハンドルを囲繞するバ
ンドを緊締してなる自転車用ブレーキレバーにお
いて、 (a) レバー本体が、中実の合成樹脂材からなつて
おり、一対の側壁間に窪み部分を形成してあ
る、 (b) 該窪み部分が、（ｂ−１）前記側壁の基端側前方で開口する
と共に枢軸を嵌挿する枢軸嵌挿孔部の上方と
連通し、レバー回転完了時に取付ボルトを上
から枢軸に挿入可能なスペースを形成し、レ
バー復帰時に枢軸に嵌合した取付ボルトと衝
合しない周面を有するボルト収納孔部を有す
る、（ｂ−２）前記側壁の下側で開口すると共に
前記枢軸嵌挿孔部の下方と連通し、バンドに
固着された取付ボルトとレバー回転時に衝合
しないスペースに設定された摺動孔部を有す
る、 (c) 上記ボルト収納孔部と摺動孔部との間の前方
であつてレバー回転時に取付ボルトと衝合しな
い位置で左右の側壁を連結すると共に、内面が
枢軸の軸受面となる前方横架枠部を設ける、 (d) 上記ボルト収納孔部と摺動孔部との間の後方
であつてレバー本体の中実部分から突出し左右
の側壁を連結すると共に内面が枢軸の軸受面と
なる後方横架枠部を設ける、という技術的手段を講じている。 In order to solve the above problems, this invention fits a pair of left and right side walls formed at the base end of the lever body into the hollow of the lever bracket, and a pivot is inserted laterally into the overlapping part to attach the lever body to the lever bracket. A brake lever for a bicycle, which is pivotably attached to the shaft, and a mounting bolt is inserted vertically in the middle of the shaft, the head is locked to the shaft, and a band surrounding the handlebar of the bicycle is tightened on the tip side. (a) the lever body is made of a solid synthetic resin material and has a recessed portion between a pair of side walls; (b) the recessed portion is located at the base of the side wall (b-1); It opens at the front of the end and communicates with the upper part of the pivot insertion hole into which the pivot is inserted, forming a space where the mounting bolt can be inserted into the pivot from above when the lever rotation is completed, and it fits into the pivot when the lever returns. (b-2) A mounting bolt that opens at the lower side of the side wall, communicates with the lower part of the pivot insertion hole, and is fixed to the band. (c) A position in front between the bolt storage hole and the sliding hole that does not collide with the mounting bolt when the lever is rotated. (d) A front horizontal frame part is provided which connects the left and right side walls and whose inner surface serves as the bearing surface of the pivot. A technical measure has been taken to provide a rear horizontal frame part that protrudes from the real part and connects the left and right side walls, and whose inner surface serves as the bearing surface for the pivot.

[Effect]

レバー本体にボルト収納孔部が形成されている
ので、取付ボルトでレバーブラケツトをハンドル
に固着する場合に、レバー本体を回転完了状態ま
で回転させると、取付ボルト挿入用の空隙となつ
て取付ボルトを締付位置まで挿入することができ
る。また取付ボルト固着後はレバー本体を回転復帰
してもボルト収納孔部の空隙によつて取付ボルト
と衝合することがないのでレバー本体の回転に支
障を生じない。またレバー本体に摺動孔部が形成されているの
で、レバー本体がレバー回転しても、固着された
取付ボルトが衝合することなく回転させることが
できる。そして側壁の前方と後方にはそれぞれ前方横架
枠部と後方横架枠部とが設けられて枢軸を軸受け
すると共に左右の側壁を一体的に連結しているの
で荷重のかかりやすい枢着部分を補強して強度を
高めている。 A bolt storage hole is formed in the lever body, so when the lever bracket is fixed to the handle with the mounting bolt, when the lever body is rotated until the rotation is completed, the hole becomes a space for inserting the mounting bolt. It can be inserted to the tightening position. Further, even if the lever body is rotated back after the mounting bolt is fixed, it will not collide with the mounting bolt due to the gap in the bolt housing hole, so there will be no trouble in rotating the lever body. Further, since the sliding hole is formed in the lever body, even when the lever body rotates, the lever body can be rotated without the fixed mounting bolts colliding with each other. A front horizontal frame portion and a rear horizontal frame portion are provided at the front and rear of the side wall, respectively, to support the pivot shaft and integrally connect the left and right side walls, so that the pivot portions that are easily subjected to loads can be fixed. Reinforced to increase strength.

【Example】

以下、この考案に係る好適実施例を図面に基づ
いて説明する。第１図乃至第２図に示す自転車用ブレーキレバ
ー１は、自転車のハンドルＨを囲繞するバンド９
をレバーブラケツト８の中空８Ａ内で上下方向に
締付ける取付ボルト７Ｂを設けてレバーブラケツ
ト８をハンドルＨに固着すると共に、該レバーブ
ラケツト８の中空８Ａにレバー本体２の基端側に
形成された左右一対の側壁２０，２０を嵌込み、
上記レバーブラケツト８を横方向に貫通する枢軸
７Ａで共締めした公知の取付構造からなつてい
る。そして、このレバー本体２は合成樹脂材の一体
成型からなつている。このレバー本体２は、基端側の内面にボルト収
納孔部３と、摺動孔部４と枢軸嵌挿孔部５を穿設
しており、またその側壁２０，２０間の上記中空
には前方横架枠部６Ａと後方横架枠部６Ｂとが連
接されている。即ち、ボルト収納孔部３は、レバー回転完了状
態で取付ボルト７Ｂを上下方向に挿入しうるよう
レバー回転角に対応した角度に傾斜して開口３Ａ
されており、且つその開口の基端側がレバー復帰
状態で、枢軸７Ａを貫通して固着された取付ボル
ト７Ｂと衝合しないよう空隙３Ｂを有する形状に
穿設されている。このボルト収納孔部３は第２図に示す断面形状
で一連に切欠かれた構成でもよいが、ボルト収納
孔部３の周壁３′が取付ボルト７Ｂの頭部の外径
よりやや大径となる湾曲面に形成すれば合成樹脂
材の肉厚を一層厚くすることができて好ましい。また、レバー本体２の側壁２０，２０の枢着側
の端部は、前記固着された取付ボルト７Ｂがレバ
ー回転によつて衝合しないよう、レバー回転角に
対応した間隔で開口する摺動孔部４を穿設してい
る。この摺動孔部４は、取付ボルト７Ｂの軸部の直
径よりやや大径の横幅に設定されて、中央に固着
された取付ボルト７Ｂが隙間を介して配設される
構成からなつており、その前後両端の周壁は取付
ボルト７Ｂの軸の外径よりやや大径の湾曲面に設
定しておいてもよいこと前記ボルト収納孔部３の
場合と同様である。更にレバー本体２は、左右一対の側壁２０，２
０の中途部で同軸状に開口し、横幅方向に貫通す
る枢軸嵌挿孔部５を開口形成しており、該枢軸嵌
挿孔部５は上記ボルト収納孔部３及び摺動孔部４
と連通する構成からなつている。この枢軸嵌挿孔部５には、水平方向に枢軸７Ａ
が嵌挿されてレバー本体２をレバーブラケツト８
に枢着している。なお、この枢軸７Ａには中途部に上下に貫通す
る孔が形成されており、前述の取付ボルト７Ｂが
貫通して枢軸７Ａの取付位置を固定する公知構成
からなつている。そして、上記レバー本体２の中空部には、前記
側壁２０，２０の前端でレバー回転時に取付ボル
ト７Ｂと衝合しない位置で左右の側壁３，３を連
結する前方横架枠部６Ａが連接されている。この前方横架枠部６Ａは、その内面が枢軸７Ａ
の軸受面となつている。またこの前方横架枠部６Ａと枢軸７Ａを介して
略対向する位置に左右の側壁２０，２０を連結す
ると共に内面が枢軸７Ａの軸受面となる後方横架
枠部６Ｂが設けられている。従つて、この前方横架枠部６Ａ及び後方横架枠
部６Ｂは、肉厚の薄い側壁３，３を一体的に連接
して補強リブ的な機能を発揮している。更に、両者６Ａ，６Ｂの対向する内面は、略直
径方向に配設されて枢軸７Ａを支承する軸受面と
もなつているので側壁２０，２０の枢軸７Ａ挿入
孔にかかる枢軸７Ａの負荷を偏在させることなく
分散することができ、強度を一層高め得る。なお、図中１０はブレーキワイヤＷの係合子を
掛止めるための連結孔であつて、ブレーキワイヤ
導入溝１０Ａと係合子掛止孔１０Ｂとからなつて
いる。これにより、レバー本体２は合成樹脂材であつ
ても十分の強度を有するのでブレーキレバーとし
て使用することができる。第３図にはレバー本体の異なる形状からなるブ
レーキレバーを示す。上記形状以外は前記実施例
と同一構成からなるのでその説明は省略する。なお、上記構成はレバー本体を全て合成樹脂材
で成型したが、その一部に金属材や剛性を有する
素材を内蔵して強度を補強する構成であつてもよ
い。 Hereinafter, preferred embodiments of this invention will be described based on the drawings. A bicycle brake lever 1 shown in FIGS. 1 and 2 includes a band 9 surrounding a handlebar H of a bicycle.
The lever bracket 8 is fixed to the handle H by providing a mounting bolt 7B that is tightened vertically in the hollow 8A of the lever bracket 8, and the right and left holes formed on the base end side of the lever body 2 in the hollow 8A of the lever bracket 8 are provided. Fitting a pair of side walls 20, 20,
It has a known mounting structure in which the lever bracket 8 is fastened together with a pivot shaft 7A passing through the lever bracket 8 in the lateral direction. The lever body 2 is integrally molded from a synthetic resin material. This lever body 2 has a bolt storage hole 3, a sliding hole 4, and a pivot insertion hole 5 on the inner surface of the base end, and the hollow space between the side walls 20, 20 is The front horizontal frame portion 6A and the rear horizontal frame portion 6B are connected. That is, the bolt storage hole 3 has an opening 3A inclined at an angle corresponding to the lever rotation angle so that the mounting bolt 7B can be inserted in the vertical direction when the lever rotation is completed.
Moreover, the proximal end of the opening is formed in a shape having a gap 3B so that the proximal end side of the opening does not collide with the mounting bolt 7B fixed through the pivot shaft 7A when the lever is in the returned state. This bolt storage hole 3 may have a configuration in which a series of notches are formed in the cross-sectional shape shown in FIG. It is preferable to form it into a curved surface because the thickness of the synthetic resin material can be further increased. In addition, the pivot side ends of the side walls 20, 20 of the lever body 2 are provided with sliding holes that are opened at intervals corresponding to the lever rotation angle so that the fixed mounting bolts 7B do not collide with each other when the lever rotates. Part 4 is drilled. This sliding hole portion 4 has a width set to be slightly larger than the diameter of the shaft portion of the mounting bolt 7B, and has a structure in which the mounting bolt 7B fixed at the center is disposed through a gap, The peripheral walls at both front and rear ends thereof may be curved to have a slightly larger diameter than the outer diameter of the shaft of the mounting bolt 7B, as in the case of the bolt storage hole 3. Further, the lever main body 2 has a pair of left and right side walls 20, 2.
A pivot fitting hole 5 is formed coaxially in the middle of 0 and penetrating in the width direction, and the pivot fitting hole 5 is connected to the bolt storage hole 3 and sliding hole 4
It consists of a structure that communicates with This pivot insertion hole 5 has a pivot 7A in the horizontal direction.
is inserted and the lever body 2 is connected to the lever bracket 8.
It is centrally located. Note that this pivot 7A has a hole formed in the middle thereof that passes through the hole vertically, and has a known structure through which the aforementioned mounting bolt 7B passes to fix the mounting position of the pivot 7A. A front horizontal frame portion 6A is connected to the hollow portion of the lever main body 2 at the front end of the side walls 20, 20 and connects the left and right side walls 3, 3 at a position that does not collide with the mounting bolt 7B when the lever is rotated. ing. This front horizontal frame portion 6A has an inner surface with a pivot shaft 7A.
This is the bearing surface of the bearing surface. Further, a rear horizontal frame portion 6B is provided at a position substantially facing the front horizontal frame portion 6A via the pivot shaft 7A, and connects the left and right side walls 20, 20, and whose inner surface serves as a bearing surface for the pivot shaft 7A. Therefore, the front horizontal frame portion 6A and the rear horizontal frame portion 6B integrally connect the thin side walls 3, 3, and exhibit a reinforcing rib-like function. Furthermore, since the opposing inner surfaces of both 6A and 6B are arranged approximately in the diametrical direction and serve as bearing surfaces for supporting the pivot 7A, the load of the pivot 7A applied to the insertion holes of the pivot 7A in the side walls 20 and 20 is unevenly distributed. The strength can be further increased. In the figure, reference numeral 10 denotes a connecting hole for latching an engaging element of the brake wire W, and is composed of a brake wire introduction groove 10A and an engaging element latching hole 10B. As a result, even though the lever body 2 is made of synthetic resin, it has sufficient strength and can be used as a brake lever. FIG. 3 shows brake levers with different shapes of lever bodies. Since the configuration other than the above-mentioned shape is the same as that of the previous embodiment, the explanation thereof will be omitted. In the above structure, the lever main body is entirely molded from a synthetic resin material, but a structure may also be adopted in which a part of the lever body is built in a metal material or a rigid material to reinforce the strength.

[Effect of the idea]

この考案は上記構成からなるので、レバー本体
を合成樹脂材で成型することができ、成型が極め
て容易で大量生産しやすく、且つ大幅にコストダ
ウンを図ることができるので工業的に極めて有益
である。また、ボルト収納孔部と摺動孔部との間
には前方横架枠部と後方横架枠部とが設けられて
左右の側壁を連接すると共に枢軸を軸方向に軸受
しているので、側壁に設けた孔だけで枢軸を受け
る場合に比べて強度を高めることができる。 Since this invention has the above-mentioned structure, the lever body can be molded from a synthetic resin material, and it is extremely easy to mold, mass-produce, and can significantly reduce costs, so it is extremely useful industrially. . In addition, a front horizontal frame portion and a rear horizontal frame portion are provided between the bolt storage hole portion and the sliding hole portion, connecting the left and right side walls, and bearing the pivot shaft in the axial direction. The strength can be increased compared to the case where the pivot shaft is received only by the hole provided in the side wall.

[Brief explanation of the drawing]

第１図はこの考案に係る自転車用ブレーキレバ
ーのレバー本体の斜視図、第２図ａ，ｂは取付状
態を示す側面図、第３図はレバー本体の異なる形
状の異なる実施例を示す斜視図、第４図は従来例
を示す縦断面図である。１……ブレーキレバー、２……レバー本体、３
……ボルト収納孔部、４……摺動孔部、５……枢
軸嵌挿孔部、６Ａ……前方横架枠部、６Ｂ……後
方横架枠部、７Ａ……枢軸、７Ｂ……取付ボル
ト、８……レバーブラケツト、９……バンド、１
０……連結孔、２０……側壁、Ｈ……ハンドル。 Fig. 1 is a perspective view of the lever body of the bicycle brake lever according to this invention, Figs. 2 a and b are side views showing the attached state, and Fig. 3 is a perspective view showing different embodiments of the lever main body with different shapes. , FIG. 4 is a longitudinal sectional view showing a conventional example. 1...Brake lever, 2...Lever body, 3
...Bolt storage hole, 4...Sliding hole, 5...Pivot fitting hole, 6A...Front horizontal frame, 6B...Rear horizontal frame, 7A...Pivot, 7B... Mounting bolt, 8... Lever bracket, 9... Band, 1
0... Connection hole, 20... Side wall, H... Handle.

Claims

[Scope of Claim for Utility Model Registration] (1) A pair of left and right side walls formed at the base end of the lever body are fitted into the hollow of the lever bracket, and a pivot is inserted laterally into the overlapping part to attach the lever body to the lever bracket. A brake lever for a bicycle, which is pivotably attached to the shaft, and a mounting bolt is inserted vertically in the middle of the shaft, the head is locked to the shaft, and a band surrounding the handlebar of the bicycle is tightened on the tip side. In the lever body, the lever body is made of a solid synthetic resin material and has a recessed part between a pair of side walls, and the recessed part opens in front of the proximal end of the side wall and has a pivot fitting into which the pivot is inserted. A bolt storage hole that communicates with the upper part of the insertion hole, forms a space in which the mounting bolt can be inserted into the pivot from above when the lever rotation is completed, and has a circumferential surface that does not collide with the mounting bolt fitted to the pivot when the lever returns. and a sliding hole that opens at the lower side of the side wall and communicates with the lower part of the pivot insertion hole, and is set in a space where the mounting bolt fixed to the band and the lever do not collide when the lever is rotated. The front horizontal frame connects the left and right side walls at the front between the bolt storage hole and the sliding hole at a position that does not collide with the mounting bolt when the lever is rotated, and the inner surface is the bearing surface of the pivot. a frame portion, and a rear horizontal frame portion that is located at the rear between the bolt storage hole portion and the sliding hole portion, protrudes from the solid portion of the lever body, connects the left and right side walls, and whose inner surface serves as a bearing surface for the pivot. A bicycle brake lever comprising: (2) The bicycle brake lever according to claim 1, wherein the side wall of the bolt storage hole is formed with a curved surface having a slightly larger diameter than the outer diameter of the head of the mounting bolt. . (3) A practical device characterized in that the sliding hole has a width slightly larger than the diameter of the shaft of the mounting bolt, and both front and rear ends are curved surfaces with a diameter slightly larger than the outside diameter of the mounting bolt. A bicycle brake lever according to claim 1 of the patent registration claim.