JP4264598B2

JP4264598B2 - Bicycle handle turning device

Info

Publication number: JP4264598B2
Application number: JP21980198A
Authority: JP
Inventors: 敏徳平良; 悦明岡本
Original assignee: 株式会社ニッコー; ブリヂストンサイクル株式会社
Priority date: 1998-07-17
Filing date: 1998-07-17
Publication date: 2009-05-20
Anticipated expiration: 2018-07-17
Also published as: JP2000033896A

Description

【発明の属する技術分野】
この発明は、自転車の車体の前部に備えた嵌合筒内に回転自在に挿通されているハンドルポストを駐輪時などに所望の転向角度位置に固定し、ハンドルの回転を一時的に固定できるようにした自転車用転向装置に関する。
【従来の技術】
駐輪場に置くときの自転車のスペースを狭くできるようにハンドルを車体と平行に転向して転向位置に固定するようにしたこの種の装置には、例えば実開平１−１１５９９７号公報および実開平４ー８１８９４号公報の他に、本出願人の先願に特開平９−３０１２４０号公報等がある。
【発明が解決しようとする課題】
上記従来の転向装置は、ハンドルロック錠と一体に付設されていたので、錠機構の施錠操作と開錠操作に、ハンドルの転向位置における固定動作と開放動作とが連動するように構成されており、そのために、自転車前部のハンドルポストの回りの限られた狭い場所に取り付ける錠機構の構造が複雑になる。また、駐輪時に施錠操作をすることなく、ハンドルのみを転向位置に固定したい場合の操作が不便であるという欠点があった。
以上のことから、本発明が解決しようとする第１の課題は、簡単な操作でハンドルの回転のみを一時的に固定できるようにした転向装置を提供して、この種の装置をより便利にかつ使い易くするとともに、使用時とともに非使用時における不用意な作動を防止して安全性に優れた転向装置を提供することにある。また本発明第２の課題は、転向装置の使用、不使用に関係せずにハンドルを転向位置において施錠できるようにすることにある。
【課題を解決するための手段】
（請求項1記載の発明）
請求項1記載の発明は、車体の前部に備えた嵌合筒内に、外周にねじ筒軸を一体に装着したハンドルポストを挿通してスラスト軸受に回転自在に軸受し、ねじ筒軸にねじ止めされたロックリング上に転向摩擦板を配置させると共に前記転向摩擦板上に駐輪用固定リングを配置させて、前記ねじ筒軸とハンドルポストを一体に回転するようにし、嵌合筒の外側に一体に延設した錠ケース内に、上記駐輪用固定リングの切欠部と係合する作動レバーを設け、この作動レバーにスライドカム及び斜面カムを介して、内端を接続した操作摘みを錠ケースの外側に臨出させ、この操作摘みの切り換え操作により、上記作動レバーが駐輪用固定リングの切欠部に係合する固定位置と、駐輪用固定リングとの係合から開放される開放位置とに切り換わるようにした自転車用ハンドル転向装置であって、上記錠ケースに、上記作動レバーの固定位置に前記操作摘みを掛止する第１掛止部と、該操作摘みを上記作動レバーの開放位置に掛止する第２掛止部を設けるとともに、この操作摘みを第１掛止部から第２掛止部へ向けて常時付勢する付勢ばねを設け、前記操作摘みは、前記錠ケースの下縁に沿って設けた前記第１掛止部と第２掛止部との間で左右動を自在にして備えられるとともに、錠ケース内で前記駐輪用固定リングの外周に沿って回動を自在に備えたスライドカムを接続して、このスライドカムを上記操作摘みの左右動に従動させ、前記作動レバーは、上記スライドカムに設けた斜面カムにガイドされて昇降して、前記駐輪用固定リングの切欠部と係合、離脱するように構成するとともに、上記操作摘みと上記スライドカムの接続部との間に、第１掛止部から第２掛止部へ操作摘みが切り換わるときは、付勢ばねによりその切換え動作が付勢されるようにしてあり、空間内に嵌装したばねに抗して上記操作摘みをハンドルポストの直径方向に引くことにより、それぞれの掛止部からの離脱を可能にしたことを特徴とする自転車用ハンドル転向装置。
上記のように構成した本発明転向装置は、ハンドルを転向位置に固定する時は、錠ケースの外側に臨出している操作摘みを第２掛止部から外して第１掛止部に切り換える操作により、該操作摘みに接続した作動レバーとハンドルポスト上の駐輪用固定リングとが係合し、ハンドルを転向位置に固定する。また、操作摘みを第１掛止部から第２掛止部に切り換えると、作動レバーが駐輪用固定リングから離脱して転向装置が非使用状態に切り換わり、ハンドルポストとハンドルが回転自在に開放される。
更に、第１掛止部から第２掛止部へ操作摘みが切り換わるとき（操作摘みが固定位置から開放位置に切り換わるとき）は、付勢ばねによりその切換え動作が付勢されるので、操作摘みの開放位置への復帰と、ハンドルポストからの作動レバーの離脱とがスムーズに行われる。また、転向装置の使用時、非使用時を問わず第１と第２の掛止部における掛止には上記付勢ばねによる付勢が抵抗になってそれぞれの掛止部内において操作摘みが確実に保持される。
また、第２掛止部から第１掛止部へ操作摘みを切り換えるときは、上記付勢ばねの付勢に抗して操作摘みを操作することになるので、操作摘みの不用意な切換え操作が防止され、転向装置の不用意な作動を抑止して、自転車の振動に耐える安全で確実な使用が期待できる。そして、それぞれの掛止部からの離脱を可能にするように構成することにより、本転向装置の作動をより確実にそしてより安全性の高いものにすることができる。
（請求項２記載の発明）
請求項2記載の発明は、ハンドルポストに、転向装置の駐輪用固定リングとは別にハンドルの転向位置に対応する切欠部を具えたロックリングを一体に装着する一方、錠ケース内に、このロックリングの切欠部と係合する錠杆を備えてハンドルを転向位置に回転不能に施錠する錠機構を設けることにより、転向位置でのハンドルを施錠できるようにすると、施錠しないハンドルの一時的な固定と、転向位置での施錠を互いに無関係に選択できるようになり、より一層使い勝手に優れた転向装置を得ることができる。
【実施例】
図面に示す実施例は、本発明に係る転向装置に施錠機構を付設した場合のもので、以下に本発明をこの実施例について説明する。図１は、本発明に係る上記実施例の側面図、図２はその取付け状態を示す一部切欠正面図、図３は転向装置の使用状態を示す一部切欠平面図である。
同上図において、１は、自転車の車体の前部に縦に一体形成されている嵌合筒、２は、外周にねじ筒軸３を一体に装着して嵌合筒１に挿通されたハンドルポスト、４は、嵌合筒１の両端部に備えられていてハンドルポスト２を回転自在に軸受する一方のスラスト軸受である。
５は、図３に示すように周縁にハンドルの正面位置とその左右にハンドルの転向位置を設定した複数カ所の切欠部６を具えてハンドルポスト２に嵌合し、図２に示すように下端をスラスト軸受４に支承させ、ねじ筒軸３にねじ止めされて互いに一体回転するように固定したロックリング、７は、ロックリング５の上部に設けた転向摩擦板、８は、この摩擦板７と接触する転向摩擦板９を裏面に形成し、周縁にハンドルの転向角度に対応させた多数の切欠部１０を歯車状に配設した駐輪用固定リング、１１は、ハンドルポスト１上で駐輪用固定リング９をロックリング５に圧接させて互いにハンドルポスト２と一体回転するように設けた環状の波型板ばねである。
１２は、同じく図３に示すように嵌合筒２の外側に延設した錠ケース１３内に縦に昇降可能に支持されて、駐輪用固定リング８の周縁部外側に位置して該リング８の切欠部１０と係合する作動レバー、１４は作動レバー１２を常時上昇方向に付勢する押し上げばねである。なお、錠ケース１３は円筒形の基部１３’をスラスト軸受４の外周に嵌合してフランジ部４’に支承され、嵌合筒１と一体回転するように固定されている。
１５は、図３、４に示すように、錠ケース１３の基部１３’の正面の内周に沿って左右方向に設けた円弧形のガイド溝、１６は、図示左端に備えた付勢ばね１７と共にガイド溝１４に嵌合し、図示右端部に具えた斜面カム１８を介して作動レバー１２の昇降動作を制御する円弧形のスライドカム、１９は、内端をスライドカム１６に接続して同カム１６を左右にスライドさせ、その移動により斜面カム１８を介して作動レバー１２を昇降させ、該レバー１２を駐輪用固定リング８の切欠部１０に嵌合させてハンドルを転向位置に固定したり、切欠部１０から離脱させてハンドルの固定を開放する操作摘みである。
この操作摘み１９は、図３に示す開放位置から同図中虚線で示す矢印に沿って左に操作されると、付勢ばね１７に抗してスライドカム１６を図４に示すように左へ移動させ、それに追従して作動レバー１２が、図５の（ａ）の位置からばね１４に押し上げられ、同図（ｂ）の位置（駐輪用固定リング８と係合する高さ）に上昇し、同リング８の切欠部１０に嵌合することにより、ハンドルポスト２及びハンドルが転向角度位置に固定される。
同じく図５の（ａ）（ｂ）に示すように、スライドカム１６の一側に備えた斜面カム１８は右端にカムの底所に当たる係合部１８’を設け、カムの高所に当たる図示左側を非係合部１８”としている。また作動レバー１２は、図１にも示すように、ハンドルポスト２側に向けて上下２本の係合腕１２’、１２”を突出させ、常時押し上げばね１４に付勢されて下の係合腕１２”をスライドカム１６に係合させつつ、上の係合腕１２’を駐輪用固定リング８の切欠部１０と接離させるように形成され、錠ケース１３に設けた昇降ガイド溝２０内に押し上げばね１４と共に嵌合している。
上記のようにして操作摘み１９が開放位置から固定位置へ移動させると、スライドカム１６が図示左に移動し、斜面カム１８を経て右端の係合部１８’が図５の（ｂ）に示す位置に達し、それまで同図（ａ）に示すように、非係合部１８”に制止されていた作動レバー１２が押し上げばね１４に付勢されて上昇し、駐輪用固定リング８の周縁部の切欠部１０と係合するので、駐輪用固定リング８及び両転向摩擦板７、９を介してハンドルポスト２の回転が阻止され、ハンドルはその時の角度位置に固定される。なお図５において駐輪用固定リング８及びスライドカム１６は説明のため展開状態で図示されている。
駐輪用固定リング８の開放は、操作摘み１９を図５の（ｂ）から（ａ）へ右に戻す操作により行われる。操作摘み１９とスライドカム１６の右行に従って斜面カム１８に押し下げられた作動レバー１２が、同カム１８の非係合部１８”へ復位することにより、転向位置に固定されていたハンドルが回転自在に開放される（図４及び図５の（ａ）参照）。
操作摘み１９は、上記のようにして作動レバー１２を駐輪用固定リング８の切欠部１０に係合させる固定位置と、切欠部１０から離脱させる開放位置を、錠ケース１３の下縁に切り欠き状に形成した第１掛止部２１と第２掛止部２２との嵌合によりそれぞれ左右動を不能にして掛止される。
そして、第１掛止部２１と第２掛止部２２に掛止される操作摘み１９には、スライドカム１６を常時図示右方向に付勢する付勢ばね１７の圧迫が作用するので、掛止位置での保持がより確実になり、自転車の振動に十分に耐えられる。また、スライドカム１６の右行は、付勢ばね１７の付勢によりスムーズに行われる一方、第２掛止部２２から第１掛止部２１へ移動させる操作摘み１９の操作は付勢ばね１７に抗して行われることになるので、不用意なハンドル固定作動を防止できる。
上記第１掛止部２１と第２掛止部２２からの操作摘み１９の離脱は、図３に示すように手前側に少し引くことによりなされる。図６の（ａ）（ｂ）に示すように操作摘み１９とスライドカム１６の接続部２３との嵌合部分には、第１と第２の掛止部２１と２２の深さに対応するスライド余裕２４と、ばね受け空間２５が形成されていて、ばね受け空間２５内に、一端を接続部２３の先端側に、他端を操作摘み１９の内端側にばね受けさせてコイル形のばね２６を嵌装し、このばね２６により常時操作摘み１９を錠ケース１３側に引き付けておき、操作に際して操作摘み１９を手前側に引いて掛止部２１、２２から離脱させて左右動を可能にし、左右動行程の終端で自動的に所定の掛止部内に引き戻させるように構成している。なお、図中２７は抜け止め用のストッパーである。
次にこの転向装置に付設した前記錠機構について説明すると、錠ケース１３には、操作摘み１９の臨出位置に隣接して形成した嵌装部１３”内に、図２の手前側に鍵穴を開口させたシリンダー錠機構２８を嵌装している。
実施例で採用したシリンダー錠機構２８は従来公知のもので、図３中に虚線で示す鍵２９の回転操作に従ってほぼ１８０°の回転が可能であるとともに、嵌装部１３’の底部との間に復元ばね３０を介設し、その付勢によって嵌装位置における所定長さの前後摺動を可能にしている。
このシリンダー錠機構２８は、同じく図３中に示すように内端に突出する角軸３１に、作動ガイド板３２と円形の回転レバー３３を嵌合し、回転レバー３３の内端面から突出するピン３４を、嵌装部１３”底部裏面に形成したスライドガイド孔３５に嵌合させた錠杆３６と係合させて、鍵２９の回転操作により、ピン３４を介して錠杆３６を進退させるように構成されている。
上記錠杆３６は、図２、３に示すように、前記ロックリング５と係合する位置に備えられ、前進時に該リング５の切欠部６と嵌合して、ハンドルポスト２及びハンドルを転向位置と正常の使用角度位置に回転不能に施錠する。なお図中３７は、錠杆３６を常時施錠方向に付勢する付勢ばねである。
図２に示す施錠状態から鍵２９の開錠操作によりシリンダー錠機構２８がほぼ９０°回転すると、図３に示すようにロックリング５の切欠部６から錠杆３６が離脱し、次いでシリンダー錠機構２８は復元ばね３０の付勢により若干手前側に移動する。次いで鍵２９を更に９０°回転すると、図３中に虚線で示すガイド溝３８の最奥部に作動ガイド板３２の一端に延設したガイド突起３９が掛止されて、開錠状態が強固に保持される。
以上のように、転向装置の駐輪用固定リング８とは別にハンドルの転向位置に対応する切欠部６を具えたロックリング５と、このロックリング５と係合する錠杆３６を備えてハンドルを転向位置に回転不能に施錠する錠機構（シリンダー錠機構２８）を設けることにより、この装置は、施錠しないハンドルの一時的な固定と、転向位置での施錠を互いに無関係に選択できるので、より一層使い勝手に優れ、自転車の使用上にきわめて有利である。
本発明の実施に際し、駐輪用固定リングを作動させる操作摘み、作動レバー等の構造は前述のように図示の態様に限られるものではなく、本発明の要旨に沿って適宜に設計変更されることは言うまでもない。
【発明の効果】
以上のように、本発明転向装置は、上記のようにきわめて簡単な操作でハンドルの一時的な固定ができる。また、ハンドルの固定時と開放時における操作摘みの保持が確実に行われ、不用意な作動が防止されるので安全性にも優れているなど、自転車の使用者に便利である。
【図面の簡単な説明】
【図１】図１は、実施例の側面図
【図２】図２は、実施例の取付け状態を示す一部切欠立面図
【図３】図３は、使用状態を示す一部切欠平面図
【図４】図４は転向装置のみを使用した場合の一部切欠平面図
【図５】図５（ａ）（ｂ）は、操作摘みとスライドカムの作動状態の説明図
【図６】図７（ａ）（ｂ）は、操作摘みとスライドカムとの接続部分の一部切欠側面図である。
【符合の説明】
１嵌合筒
２ハンドルポスト
３ねじ筒軸
４スラスト軸受
４’フランジ部
５ロックリング
６切欠部
７転向摩擦板
８駐輪用固定リング
９転向摩擦板
１０切欠部
１１波型板ばね
１２作動レバー
１２’ 係合腕
１２” 係合腕
１３錠ケース
１３’ 基端部
１３” 嵌装部
１４押し上げばね
１５ガイド溝
１６スライドカム
１７付勢ばね
１８斜面カム
１８’ 係合部
１８” 係合部
１９操作摘み
２０昇降ガイド溝
２１第１掛止部
２２第２掛止部
２３接続部
２４スライド余裕
２５ばね受け空間
２６ばね
２７ストッパー
２８シリンダー錠機構
２９鍵
３０復元ばね
３１角軸
３２作動ガイド板
３３回転レバー
３４ピン
３５スライドガイド孔
３６錠杆
３７付勢ばね
３８ガイド溝
３９ガイド突起BACKGROUND OF THE INVENTION
In this invention, a handle post that is rotatably inserted in a fitting cylinder provided at the front part of a bicycle body is fixed at a desired turning angle position during parking, and the rotation of the handle is temporarily fixed. The present invention relates to a bicycle turning device that can be used.
[Prior art]
This type of device in which the steering wheel is turned parallel to the vehicle body and fixed at the turning position so that the space of the bicycle when it is placed on the bicycle parking space can be reduced is disclosed in, for example, Japanese Utility Model Laid-Open No. 1-1115997 and Japanese Utility Model In addition to the 81894 publication , Japanese Patent Application Laid-Open No. 9-301240 is a prior application of the present applicant.
[Problems to be solved by the invention]
Since the conventional turning device is attached integrally with the handle lock lock, the locking operation and the unlocking operation of the lock mechanism are configured so that the fixing operation and the opening operation at the turning position of the handle are interlocked with each other. This complicates the structure of the locking mechanism that is attached to a limited narrow space around the handle post at the front of the bicycle. In addition, there is a disadvantage that the operation is inconvenient when it is desired to fix only the handle to the turning position without performing the locking operation when parking.
In view of the above, the first problem to be solved by the present invention is to provide a turning device that can temporarily fix only the rotation of the handle by a simple operation, making this type of device more convenient. It is another object of the present invention to provide a turning device that is easy to use and has excellent safety by preventing inadvertent operation during use and when not in use. A second object of the present invention is to enable the handle to be locked at the turning position regardless of whether or not the turning device is used.
[Means for Solving the Problems]
(Invention of Claim 1)
First aspect of the present invention, in the fitting tube having a front portion of the vehicle body, rotatably and bearing to the thrust bearing screw cylinder shaft on the outer periphery by inserting the handle post mounted integrally to the screw cylinder axis root Ji said on turning friction plate by placing the parked fixing ring together to place the turning friction plates on locking by lock ring, the threaded cylindrical shaft and the handle post so as to rotate integrally, fitting tube An operation lever that engages with the notch portion of the parking ring fixing ring is provided in a lock case that is integrally extended outside the door , and the inner end is connected to the operation lever via a slide cam and a slope cam. The knob is exposed to the outside of the lock case, and the operation lever switching operation releases the fixed position where the operating lever engages with the notch of the parking ring fixing ring and the engagement with the parking ring fixing ring. To switch to the open position A bicycle steering wheel turning device, wherein the lock case has a first latching portion for latching the operation knob at a fixed position of the operation lever, and the operation knob is latched at an open position of the operation lever. While providing the 2nd latching part, the biasing spring which always urges | biases this operation knob toward the 2nd latching part from the 1st latching part is provided, and the said operation knob follows the lower edge of the said lock case. The first latching portion and the second latching portion provided are provided so as to be freely movable in the left-right direction, and freely rotatable along the outer periphery of the parking ring fixing ring in a lock case. The slide cam is connected to follow the left-right movement of the operation knob, and the operating lever is guided by a slope cam provided on the slide cam to move up and down, and the parking ring fixing ring It is configured to engage and disengage from the notch, and When the operation knob is switched from the first latching section to the second latching section between the operation knob and the connecting portion of the slide cam, the switching operation is biased by the biasing spring. A bicycle steering wheel turning device characterized in that it can be detached from the respective latching portions by pulling the operation knob in the diameter direction of the steering wheel post against the spring fitted in the space .
In the turning device of the present invention configured as described above, when the handle is fixed at the turning position, the operation knob protruding outside the lock case is removed from the second hooking portion and switched to the first hooking portion. As a result, the operating lever connected to the operation knob and the parking ring fixing ring on the handle post are engaged to fix the handle in the turning position. In addition, when the operation knob is switched from the first latching portion to the second latching portion, the operating lever is detached from the parking ring fixing ring, the turning device is switched to the non-use state, and the handle post and the handle are freely rotatable. Opened.
Furthermore, when the operation knob is switched from the first latching section to the second latching section (when the operation knob is switched from the fixed position to the open position), the switching operation is biased by the biasing spring. The return of the operation knob to the open position and the release of the operating lever from the handle post are performed smoothly. In addition, regardless of whether the turning device is used or not, the first and second hooks are latched by the biasing force of the biasing spring, so that the operation knob can be reliably operated in each latching part. Retained.
In addition, when the operation knob is switched from the second latching section to the first latching section, the manipulation knob is operated against the biasing of the biasing spring. This prevents the turning device from being inadvertently operated, and can be expected to be used safely and reliably to withstand vibrations of the bicycle. And it is possible to make the operation of the turning device more reliable and safer by configuring so as to be able to be detached from the respective latching portions.
(Invention of Claim 2)
In the invention according to claim 2, a lock ring having a notch corresponding to the turning position of the handle is separately attached to the handle post separately from the stationary ring for parking of the turning device. By providing a lock mechanism that locks the handle in the turning position so that it cannot be rotated by providing a lock that engages with the notch of the lock ring, the handle in the turning position can be locked. Fixing and locking at the turning position can be selected independently of each other, and a turning device that is even more convenient can be obtained.
【Example】
The embodiment shown in the drawings is a case where a locking mechanism is attached to the turning device according to the present invention, and the present invention will be described below with reference to this embodiment. FIG. 1 is a side view of the above-described embodiment according to the present invention, FIG. 2 is a partially cutaway front view showing an attachment state thereof, and FIG. 3 is a partially cutaway plan view showing a use state of a turning device.
In the same figure, 1 is a fitting cylinder that is integrally formed vertically on the front of the bicycle body, and 2 is a handle post that is inserted into the fitting cylinder 1 with a screw cylinder shaft 3 integrally attached to the outer periphery. Reference numeral 4 denotes one thrust bearing which is provided at both ends of the fitting cylinder 1 and rotatably supports the handle post 2.
As shown in FIG. 3, a handle post 2 is fitted with a plurality of notches 6 having a front position of the handle on the periphery and a turning position of the handle on the right and left as shown in FIG. Is supported on the thrust bearing 4 and is fixed to the screw cylinder shaft 3 so as to rotate integrally with each other, 7 is a turning friction plate provided on the upper portion of the lock ring 5, and 8 is this friction plate 7 A fixed ring for parking, in which a turning friction plate 9 is formed on the back surface, and a number of notches 10 corresponding to the turning angle of the handle are arranged in a gear shape on the periphery. An annular corrugated leaf spring is provided so that the ring fixing ring 9 is brought into pressure contact with the lock ring 5 and rotates together with the handle post 2.
Similarly, as shown in FIG. 3, 12 is supported in a lock case 13 extending outside the fitting cylinder 2 so as to be vertically movable, and is positioned outside the peripheral edge of the parking ring fixing ring 8. Reference numeral 14 denotes an operating lever that engages with the notch 10, and 14 is a push-up spring that constantly urges the operating lever 12 in the upward direction. The lock case 13 is supported by the flange portion 4 ′ with a cylindrical base portion 13 ′ fitted to the outer periphery of the thrust bearing 4, and is fixed so as to rotate integrally with the fitting cylinder 1.
3 and 4, as shown in FIGS. 3 and 4, an arcuate guide groove provided in the left-right direction along the inner circumference of the front surface of the base portion 13 'of the lock case 13, and 16 is a biasing spring provided at the left end in the figure. 17 is an arc-shaped slide cam that is fitted in the guide groove 14 together with the control shaft 17 and controls the raising / lowering operation of the operating lever 12 via a slope cam 18 provided at the right end in the figure, and has an inner end connected to the slide cam 16. Then, the cam 16 is slid left and right, and the operation lever 12 is moved up and down through the inclined cam 18 by the movement, and the lever 12 is fitted into the notch 10 of the parking ring fixing ring 8 so that the handle is turned to the turning position. This is an operation knob that is fixed or released from the notch 10 to release the handle.
When this operation knob 19 is operated to the left from the open position shown in FIG. 3 along the arrow indicated by the imaginary line in FIG. 3, the slide cam 16 is moved to the left as shown in FIG. Following this, the actuating lever 12 is pushed up by the spring 14 from the position of FIG. 5 (a) to the position of FIG. 5 (b) (the height at which it engages with the parking ring fixing ring 8). The handle post 2 and the handle are fixed at the turning angle position by ascending and fitting into the notch 10 of the ring 8.
Similarly, as shown in FIGS. 5A and 5B, the slope cam 18 provided on one side of the slide cam 16 is provided with an engaging portion 18 'that hits the bottom of the cam at the right end, and the left side of the figure that hits the height of the cam. As shown in FIG. 1, the actuating lever 12 has two upper and lower engaging arms 12 ', 12 "projecting toward the handle post 2 side so as to always push up the spring. 14, the lower engaging arm 12 ″ is engaged with the slide cam 16 and the upper engaging arm 12 ′ is formed so as to contact and separate from the notch 10 of the parking ring fixing ring 8, A push-up spring 14 is fitted in an elevating guide groove 20 provided in the lock case 13.
When the operation knob 19 is moved from the open position to the fixed position as described above, the slide cam 16 moves to the left in the figure, and the right end engaging portion 18 ′ is shown in FIG. As shown in FIG. 5A, the operating lever 12 that has been restrained by the non-engaging portion 18 ″ is pushed up by the push-up spring 14 and rises to the periphery of the parking ring fixing ring 8 as shown in FIG. Therefore, the rotation of the handle post 2 is prevented via the parking ring fixing ring 8 and the turning friction plates 7 and 9, and the handle is fixed at the angular position at that time. 5, the parking ring fixing ring 8 and the slide cam 16 are shown in an unfolded state for the sake of explanation.
The parking ring fixing ring 8 is opened by an operation of returning the operation dial 19 from (b) to (a) in FIG. 5 to the right. When the operating lever 12 pushed down by the inclined cam 18 according to the right row of the operation knob 19 and the slide cam 16 returns to the non-engaging portion 18 ″ of the cam 18, the handle fixed at the turning position is rotatable. (See (a) of FIGS. 4 and 5).
The operation knob 19 cuts the fixed position where the operating lever 12 is engaged with the cutout portion 10 of the parking ring fixing ring 8 and the open position where it is released from the cutout portion 10 at the lower edge of the lock case 13 as described above. The first latching portion 21 and the second latching portion 22 formed in a notch shape are engaged with each other by disabling left-right movement.
The operation knob 19 latched by the first latching portion 21 and the second latching portion 22 is pressed by the biasing spring 17 that constantly biases the slide cam 16 in the right direction in the figure. Holding in the stop position is more reliable and can withstand the vibration of the bicycle. Further, the right movement of the slide cam 16 is smoothly performed by the biasing of the biasing spring 17, while the operation knob 19 that moves from the second latching portion 22 to the first latching portion 21 is operated by the biasing spring 17. Therefore, inadvertent handle fixing operation can be prevented.
The operation knob 19 is detached from the first hook portion 21 and the second hook portion 22 by slightly pulling it toward the front side as shown in FIG. As shown in FIGS. 6A and 6B, the fitting portion between the operation knob 19 and the connection portion 23 of the slide cam 16 corresponds to the depth of the first and second latching portions 21 and 22. A slide margin 24 and a spring receiving space 25 are formed. In the spring receiving space 25, one end is spring-loaded on the distal end side of the connecting portion 23 and the other end is spring-loaded on the inner end side of the operation knob 19. A spring 26 is fitted, and the operation knob 19 is always attracted to the lock case 13 by the spring 26, and when operating, the operation knob 19 is pulled to the front side to disengage from the latching portions 21, 22 and can be moved left and right. Thus, it is configured to be automatically pulled back into a predetermined latching portion at the end of the left-right movement stroke. In the figure, reference numeral 27 denotes a stopper for retaining the stopper.
Next, the lock mechanism attached to the turning device will be described. The lock case 13 has a keyhole on the front side in FIG. 2 in the fitting portion 13 ″ formed adjacent to the projecting position of the operation knob 19. The opened cylinder lock mechanism 28 is fitted.
The cylinder lock mechanism 28 employed in the embodiment is conventionally known, and can be rotated by approximately 180 ° in accordance with the rotation operation of the key 29 indicated by an imaginary line in FIG. 3, and is connected to the bottom of the fitting portion 13 ′. A restoring spring 30 is interposed therebetween, and the biasing of the restoring spring 30 makes it possible to slide back and forth for a predetermined length at the fitting position.
As shown in FIG. 3, the cylinder lock mechanism 28 has a pin 31 protruding from the inner end surface of the rotation lever 33 by fitting an operation guide plate 32 and a circular rotation lever 33 to a square shaft 31 protruding to the inner end. 34 is engaged with a lock rod 36 fitted in a slide guide hole 35 formed on the bottom surface of the fitting portion 13 ″, and the lock rod 36 is advanced and retracted via the pin 34 by rotating the key 29. It is configured.
As shown in FIGS. 2 and 3, the lock rod 36 is provided at a position where it engages with the lock ring 5, and engages with the notch 6 of the ring 5 when moving forward to turn the handle post 2 and the handle. Lock in a non-rotatable position and normal use angle position. In the figure, 37 is a biasing spring that constantly biases the lock rod 36 in the locking direction.
When the cylinder lock mechanism 28 is rotated approximately 90 ° by the unlocking operation of the key 29 from the locked state shown in FIG. 2, the lock rod 36 is detached from the notch 6 of the lock ring 5 as shown in FIG. 28 moves slightly forward by the biasing force of the restoring spring 30. Next, when the key 29 is further rotated by 90 °, a guide projection 39 extending to one end of the operation guide plate 32 is hooked at the innermost part of the guide groove 38 indicated by an imaginary line in FIG. Retained.
As described above, the handle is provided with the lock ring 5 provided with the notch 6 corresponding to the turning position of the handle, and the lock rod 36 engaged with the lock ring 5 separately from the stationary ring 8 for parking of the turning device. By providing a locking mechanism (cylinder locking mechanism 28) that locks the rotation position in a non-rotatable position, this device can select the temporary fixing of the handle that is not locked and the locking position in the turning position independently of each other. It is more convenient and extremely advantageous for bicycle use.
In carrying out the present invention, the structure of the operation knob, the operation lever, and the like for operating the parking ring fixing ring is not limited to the illustrated embodiment as described above, and the design is appropriately changed in accordance with the gist of the present invention. Needless to say.
【The invention's effect】
As described above, the turning device of the present invention can temporarily fix the handle with an extremely simple operation as described above. In addition, it is convenient for bicycle users because the operation knob is securely held when the handle is fixed and released, and careless operation is prevented, so that safety is excellent.
[Brief description of the drawings]
FIG. 1 is a side view of the embodiment. FIG. 2 is a partially cutaway elevation view showing a mounting state of the embodiment. FIG. 3 is a partially cutaway plan view showing a use state. [FIG. 4] FIG. 4 is a partially cutaway plan view when only a turning device is used. [FIG. 5] FIGS. 5 (a) and 5 (b) are explanatory views of an operation knob and an operating state of a slide cam. 7A and 7B are partially cutaway side views of a connection portion between the operation knob and the slide cam.
[Explanation of sign]
DESCRIPTION OF SYMBOLS 1 Fitting cylinder 2 Handle post 3 Screw cylinder shaft 4 Thrust bearing 4 'flange part 5 Lock ring 6 Notch part 7 Turning friction plate 8 Parking ring fixing ring 9 Turning friction plate 10 Notch part 11 Wave spring 12 Actuating lever 12 'Engagement arm 12' engagement arm 13 lock case 13 'base end portion 13 "fitting portion 14 push-up spring 15 guide groove 16 slide cam 17 biasing spring 18 slope cam 18' engagement portion 18" engagement portion 19 operation Knob 20 Lifting guide groove 21 First latching portion 22 Second latching portion 23 Connection portion 24 Sliding margin 25 Spring receiving space 26 Spring 27 Stopper 28 Cylinder locking mechanism 29 Key 30 Restoring spring 31 Square shaft 32 Actuation guide plate 33 Rotating lever 34 pin 35 slide guide hole 36 lock rod 37 biasing spring 38 guide groove 39 guide projection

Claims

In the fitting cylinder having at a front portion of the vehicle body, rotatably and bearing to the thrust bearing screw cylinder shaft on the outer periphery by inserting the handle post mounted integrally sleep in screw cylinder shaft Flip stop has been on the locking ring A turning friction plate and a parking ring fixing ring are arranged on the turning friction plate so that the screw cylinder shaft and the handle post rotate integrally, and extend integrally outside the fitting cylinder. An operating lever that engages with the notch of the parking ring fixing ring is provided in the lock case, and an operating knob having an inner end connected to the operating lever via a slide cam and a slope cam is exposed to the outside of the lock case. By switching the operation knob, the operation lever switches between a fixed position where the operating lever engages with the notch of the parking ring fixing ring and an open position where the operation lever is released from the engagement with the parking ring fixing ring. Bicycle handle A first latching portion for latching the operation knob at a fixed position of the operation lever, and a second latch for latching the operation knob at an open position of the operation lever. And a biasing spring that constantly biases the operation knob from the first latching section toward the second latching section, and the operation knob is provided along the lower edge of the lock case. A slide cam that is provided to freely move left and right between the first hook and the second hook, and that can freely rotate along the outer periphery of the parking ring in the lock case. The slide cam is connected to the left and right movements of the operation knob, and the operating lever is guided by a slope cam provided on the slide cam to move up and down to engage with the notch portion of the parking ring fixing ring. Are configured to detach, and the operation knob and the slider are Between the connection portion of Dokamu, when the first hook portion switches the operation knob to the second hook portion is Yes as the switching operation is biased by a biasing spring, it fits into the space A bicycle steering wheel turning device characterized in that it can be detached from each latching portion by pulling the operation knob against the mounted spring in the diameter direction of the steering wheel post.

A lock ring that rotates integrally with the parking ring fixing ring and locks the handle in the turning position is attached to the screw cylinder shaft, and a lock that engages with the notch of the lock ring is provided in the lock case. By providing a locking mechanism that locks the handle to the turning position in a non-rotatable manner, it is possible to select between fixing the handle at the turning position during parking and locking the handle at the turning position using the locking mechanism. The bicycle steering wheel turning device according to claim 1, wherein the bicycle steering wheel turning device is provided.