JP4886927B2 - Push-pull cable connection mechanism - Google Patents
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- JP4886927B2 JP4886927B2 JP2000161499A JP2000161499A JP4886927B2 JP 4886927 B2 JP4886927 B2 JP 4886927B2 JP 2000161499 A JP2000161499 A JP 2000161499A JP 2000161499 A JP2000161499 A JP 2000161499A JP 4886927 B2 JP4886927 B2 JP 4886927B2
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Description
【0001】
【発明の属する技術分野】
本発明は、例えばフロントローダ等が備える遠隔駆動装置にプッシュプルケーブルを連結して、遠隔操作するのに用いられるプッシュプルケーブルの連結機構に関する。
【0002】
【従来の技術】
図7に示すトラクター(20)には、例えば油圧式のフロントローダ(21)が搭載されている。そして遠隔操作レバー(25)と遠隔駆動装置である油圧方向切換弁(10)とをプッシュプルケーブル(1)で連結し、上記遠隔操作レバー(25)で上記油圧方向切換弁(10)を遠隔操作することにより、図外の油圧ホースを介して各油圧シリンダ(22)(23)を伸縮させて、上記フロントローダ(21)を駆動制御するように構成されている。この種のプッシュプルケーブルの連結機構としては、従来より例えば図6に示すものが知られている。
【0003】
この連結機構は、図6に示すように、インナーワイヤ(2)の先端部を遠隔駆動装置(10)の従動スプール(11)にねじ込んでロックナット(5)で固定し、上記遠隔駆動装置(10)のケーシング(12)に組付具(13・14)を介してチューブ固定筒(16)を固定し、アウターチューブ(3)を上記チューブ固定筒(16)にねじ込んでロックナット(19)で固定して構成される。そして本来ならチューブ固定筒(16)とインナーワイヤ(2)とは、従動スプール(11)に対して同一軸心状(以下「同軸状」という)に連結される。
【0004】
【発明が解決しようとする課題】
ところが、インナーワイヤ(2)の先端部の雄ねじと従動スプール(11)の先端部の雌ねじとの間にはねじ嵌合のガタが存在するとともに、上記インナーワイヤ(2)の雄ねじと前記ロックナット(5)の雌ねじとの間にもねじ嵌合のガタが存在する。このため、インナーワイヤ(2)と従動スプール(1)との連結に際して、従動スプール(11)の軸線(Z1)に対してインナーワイヤ(2)の軸線(Z2)が傾く場合があり、ロックナット(5)を締め付けると、その傾いた状態のままで、インナーワイヤ(2)が従動スプール(11)に固定されてしまう。このインナーワイヤ(2)の倒れに起因するインナーワイヤとアウターチューブとの干渉抵抗により、前記の遠隔駆動装置が作動不良を起こす場合がある。このような不都合を解消するには、再組付けによる調整が必要になる。
【0005】
本発明はこのような事情に鑑みてなされたものであり、その目的は、インナーワイヤの倒れに起因するアウターチューブとの干渉抵抗を無くして遠隔駆動装置の作動不良を解消するとともに、再組付けによる調整を不要にするプッシュプルケーブルの連結機構を提供することにある。
【0006】
【課題を解決するための手段】
上記課題を解決するために、本発明に係るプッシュプルケーブルの連結機構は以下のように構成される。
即ち、請求項1に記載の発明は、例えば図1及び図2に示すように、インナーワイヤ(2)を遠隔駆動装置(10)の従動部材(11)に螺合するとともに、アウターチューブ(3)をチューブ固定筒(16)に固定し、このチューブ固定筒(16)を上記遠隔駆動装置(10)の固定側部材(12)に組み付けて構成する。そして、上記インナーワイヤ(2)の雄ねじ部(2a)と同軸状に該インナーワイヤ(2)に形成された密嵌部(2b)と、上記雄ねじ部(2a)に螺合する上記従動部材(11)の雌ねじ部(4a)と同軸状であって上記従動部材(11)と一体に又はそれとは別体に形成され、かつ、上記密嵌部(2b)に同軸状でかつ緊密に外嵌する所定長さ(C)の密嵌孔(4b,11b)とからなる同軸矯正手段(4)を備えており、上記チューブ固定筒(16)を上記従動部材(11)と同軸状に配置して上記固定側部材(12)に固定するとともに、上記インナーワイヤ(2)を上記同軸矯正手段(4)を介して上記従動部材(11)に同軸状に螺合する。
【0007】
【0008】
【0009】
【発明の作用・効果】
請求項1に記載の発明では、上記チューブ固定筒(16)は遠隔駆動装置(10)の従動部材(11)と同軸状に配置して上記固定側部材(12)に固定される。他方のインナーワイヤ(2)は、上記インナーワイヤ(2)の雄ねじ部(2a)と同軸状に形成された密嵌部(2b)と、上記雄ねじ部(2a)に螺合する雌ねじ部(4a)と同軸状に形成され、この密嵌部(2b)に同軸状でかつ緊密に外嵌する所定長さ(C)の密嵌孔(4b)とからなる同軸矯正手段(4)を介して上記従動部材(11)に同軸状に螺合される。これによりインナーワイヤの倒れは無くなり、インナーワイヤとアウターチューブとの干渉も無くなる。従って、両者の干渉抵抗による遠隔駆動装置の作動不良は解消され、再組付けによる調整も不要になる。
【0010】
【0011】
【0012】
【発明の実施の形態】
以下、本発明の実施形態を添付図面に基づいて説明する。図1は本発明の第1の実施形態を示し、図1(A)はプッシュプルケーブルと遠隔駆動装置との連結機構の要部を破断した正面図、図1(B)はその要部を拡大した部分断面図である。
【0013】
このプッシュプルケーブルの連結機構は、図1(A)に示すように、プッシュプルケーブル(1)のインナーワイヤ(2)を遠隔駆動装置である油圧方向切換弁(10)の従動部材(11)に連結するとともに、プッシュプルケーブル(1)のアウターチューブ(3)を上記の油圧方向切換弁(10)の固定側部材(12)にチューブ固定筒(16)を介して組み付けて構成される。以下、上記従動部材(11)を「従動スプール」といい、上記固定側部材(12)を「ケーシング」という。
【0014】
上記インナーワイヤ(2)の先端部には雄ねじ(2a)が形成されており、この雄ねじ(2a)に予め筒状の同軸矯正手段(4)を深く装着しておく。他方、上記同軸矯正手段(4)の筒内面には、雌ねじ部(4a)とこれよりも大径で所定長さ(C)の密嵌孔(4b)が同軸状に形成されている。上記インナーワイヤ(2)に上記同軸矯正手段(4)を装着した状態では、上記インナーワイヤ(2)の密嵌部(2b)に上記同軸矯正手段(4)の密嵌孔(4b)が緊密に外嵌し、両者は同軸状に嵌合している。
【0015】
上記従動スプール(11)を図外のスパナ等により回転させて、上記雄ねじ(2a)を従動スプール(11)にねじ込む。その後で上記同軸矯正手段(4)を上記従動スプール(11)に向けて増し締めすることにより、その同軸矯正手段(4)の右端面が従動スプール(11)の先端面に接当して、上記従動スプール(11)に対するインナーワイヤ(2)の倒れが矯正される。これにより、インナーワイヤ(2)と従動スプール(11)とが同軸状に連結される。
【0016】
上記チューブ固定筒(16)の一端部には鍔状のフランジ(17)が一体に形成され、他端部には雌ねじ(18)が形成されている。上記フランジ(17)は一組の挟持金具(13・14)で挟持され、これらの挟持金具(13・14)はケーシング(12)に固定ボルト(15)で固定される。この状態では、チューブ固定筒(16)と従動スプール(11)とは同軸状になる。
【0017】
他方、アウターチューブ(3)の先端部には雄ねじが形成されており、この雄ねじを上記チューブ固定筒(16)の雌ねじ(18)にねじ込み、ロックナット(19)で緩み止めする。この状態ではアウターチューブ(3)と従動スプール(11)とが同軸状になる。従って、仮にインナーワイヤ(2)が従動スプール(11)に対して倒れが生じる場合においても、上記の同軸矯正手段(4)により従動スプール(11)に対するインナーワイヤ(2)の倒れが矯正され、両者は同軸状に連結されて、インナーワイヤ(2)とアウターチューブ(3)との干渉も無くなる。
【0018】
図2(a)〜(d)は、それぞれ同軸矯正手段(4)の変形例を示す図1(B)相当図である。
図2(a)は同軸矯正手段(4)の第1の変形例を示し、従動スプール(11)の奥内寄りに雌ねじ部(11a)が形成され、先端寄りにこれよりも大径で所定長さ(C)の密嵌孔(11b)が同軸状に形成されている。この実施形態では、インナーワイヤ(2)の雄ねじ(2a)に続く大径の密嵌部(2b)と上記の密嵌孔(11b)とが同軸矯正手段(4)を構成する。上記インナーワイヤ(2)の雄ねじ(2a)を従動スプール(11)にねじ込んだ後で、従動スプール(11)先端部の止めねじ(6)で緩み止めする。これにより、上記インナーワイヤ(2)の密嵌部(2b)に上記の密嵌孔(11b)が緊密に外嵌した状態で、上記インナーワイヤ(2)と従動スプール(11)とが同軸状に連結される。
【0019】
図2(b)は同軸矯正手段(4)の第2の変形例を示す。ここではインナーワイヤ(2)の雄ねじ(2a)の先端側に密嵌部(2b)が形成され、従動スプール(11)の先端寄りに雌ねじ部(11a)が、その奥内部にこれよりも小径で所定長さ(C)の密嵌孔(11b)が同軸状に形成されている。この実施形態では、上記の密嵌部(2b)と密嵌孔(11b)が同軸矯正手段(4)を構成する。上記インナーワイヤ(2)の雄ねじ(2a)を従動スプール(11)にねじ込んだ後で、従動スプール(11)の先端のロックナツト(5)を締結する。これにより、上記インナーワイヤ(2)の密嵌部(2b)に上記の従動スプール(11)の密嵌孔(11b)が緊密に嵌合した状態で、上記インナーワイヤ(2)と従動スプール(11)とが同軸状に連結される。
【0020】
図2(c)は同軸矯正手段(4)の第3の変形例(参考例)を示す。ここではインナーワイヤ(2)の先端寄りに密嵌部(2b)が形成され、この密嵌部(2b)に抜止め溝(2c)が形成されている。他方、従動スプール(11)の先端部に所定長さ(C)の密嵌孔(11b)が同軸状に形成されている。この参考例では、上記インナーワイヤ(2)の密嵌部(2b)と従動スプール(11)の密嵌孔(11b)が同軸矯正手段(4)を構成する。上記インナーワイヤ(2)の密嵌部(2b)を従動スプール(11)の密嵌孔(11b)内に挿入して、止めねじ(6)で抜け止めする。これにより、上記インナーワイヤ(2)の密嵌部(2b)に従動スプール(11)の密嵌孔(11b)が緊密に嵌合した状態で、上記インナーワイヤ(2)と従動スプール(11)とが同軸状に連結される。
【0021】
図2(d)は同軸矯正手段(4)の第4の変形例(参考例)を示す。ここではインナーワイヤ(2)の先端寄りに太めの密嵌部(2b)が形成されている。他方、従動スプール(11)の先端寄りに所定長さ(C)の密嵌孔(11b)が同軸状に形成されている。また、上記の従動スプール(11)の先端寄りに雄ねじ(11c)が形成され、これに抜け止めナット(7)が螺着されて上記の密嵌部(2b)を抜け止めする。
【0022】
この参考例では、上記インナーワイヤ(2)の密嵌部(2b)と従動スプール(11)の密嵌孔(11b)が同軸矯正手段(4)を構成する。上記インナーワイヤ(2)の密嵌部(2b)を従動スプール(11)の密嵌孔(11b)内に挿入して、上記抜け止めナット(7)で抜け止めする。これにより、上記インナーワイヤ(2)の密嵌部(2b)に従動スプール(11)の密嵌孔(11b)が緊密に嵌合した状態で、上記インナーワイヤ(2)と従動スプール(11)とが同軸状に連結される。
【0023】
図3は本発明の参考例1を示し、図3(A)はプッシュプルケーブルの連結機構の要部を破断した正面図、図3(B)はその要部を拡大した部分断面図である。この連結機構は、図3(A)に示すように、プッシュプルケーブル(1)のインナーワイヤ(2)を従来例(図6)と同様に従動スプール(11)に連結するとともに、前記の油圧方向切換弁(10)のケーシング(12)に対して遊動隙間(S)を介してチューブ固定筒(16)を組付け、このチューブ固定筒(16)にプッシュプルケーブル(1)のアウターチューブ(3)を固定して構成される。
【0024】
即ち、上記チューブ固定筒(16)の一端側のフランジ(17)は、前記の挟持金具(13・14)で挟持されるが、この参考例1では、一方の挟持金具(13)に大きめの装着用凹部(13a)を形成することにより、上記フランジ(17)の遊動隙間(S)が形成される。なお、図3(B)に示すように、一組みの挟持金具(13・14)の間にスペーサ(8a)を介在させることにより上記の遊動隙間(S)を簡単に形成することができる。
【0025】
この参考例1では、仮にインナーワイヤ(2)が従動スプール(11)に対して倒れが生じた状態で連結された場合においても、上記チューブ固定筒(16)を上記ケーシング(12)に対して遊動隙間(S)を介して組み付けることにより、上記アウターチューブ(3)は上記インナーワイヤ(2)の倒れに対して追随する。これによりインナーワイヤの倒れが生じた場合でも、両者の干渉抵抗による遠隔駆動装置の作動不良は解消され、再組付けによる調整も不要になる。
【0026】
図4は本発明の参考例1の変形例を示し、図4(A)はプッシュプルケーブルの連結機構の要部を破断した正面図、図4(B)はその要部を拡大した部分断面図である。この変形例では、上記チューブ固定筒(16)の一端側のフランジ(17)は、一組みの挟持金具(13・14)に挟持固定されるが、一方の挟持金具(13)は前記ケーシング(12)に対して遊動隙間(S)を介して組付けられる。
【0027】
即ち、図4(A)(B)に示すように、一方の挟持金具(13)は、前記ケーシング(12)に対して当該挟持金具(13)の厚みよりも背丈の大きいカラー(8c)を有する組付けボルト(8b)で遊動自在に組付けられる。この変形例においても、アウターチューブ(3)は上記インナーワイヤ(2)の倒れに対して追随する。これによりインナーワイヤの倒れが生じた場合でも、両者の干渉抵抗による遠隔駆動装置の作動不良は解消される。
【0028】
図5は本発明の参考例2を示し、図5(A)は参考例2に係る連結機構の要部を破断した正面図、図5(B)はその変形例に係る要部の拡大部分断面図である。この参考例2では、インナーワイヤ(2)は首振連結具(9)を介して従動スプール(11)に首振り可能に連結され、上記チューブ固定筒(16)は、ケーシング(12)に固定されたとき、従動スプール(11)と同軸状になる。
【0029】
即ち、図5(A)に示す参考例2では、インナーワイヤ(2)の先端部にボールジョイント(9a)を設け、他方の従動スプール(11)にこのボールジョイント(9a)を抜け止め装着して首振り可能に連結する。また、図5(B)に示す変形例では、インナーワイヤ(2)の先端部に首振り可能な大きめのピン孔(2e)をあけ、このピン孔(2e)にピン(9b)を通する。他方の従動スプール(11)の先端部にワイヤー先端部を挿入する挿入孔(11e)をあけ、この挿入孔(11e)内に上記ワイヤー先端部を上記ピン(9b)により組み付け、従動スプール(11)に対してインナーワイヤ(2)を首振り可能に連結する。
【0030】
上記参考例2では、ボールジョイント(9a)や上記ピン孔(2e)及びピン(9b)が首振連結具(9)を構成する。つまり、従動スプール(11)に対して首振り可能に連結されたインナーワイヤ(2)は、アウターチューブ(3)に対して常に追従可能になる。従って、インナーワイヤ(2)とアウターチューブ(3)との干渉抵抗による遠隔駆動装置の作動不良は解消され、再組付けによる調整も不要になる。
【0031】
上記の各実施形態では、前記遠隔駆動装置(10)を油圧方向切換弁として説明したが、これを例えばレバー式の駆動手段等に変更可能である。
【図面の簡単な説明】
【図1】 本発明の第1の実施形態を示し、図1(A)はプッシュプルケーブルと遠隔駆動装置との連結機構の要部を破断した図、図1(B)はその要部を拡大した部分断面図である。
【図2】 図2(a)〜(d)は、上記第1の実施形態に係る同軸矯正手段のそれぞれ変形例を示す図1(B)相当図である。
【図3】 本発明の参考例1を示し、図3(A)はプッシュプルケーブルの連結機構の要部を破断した図、図3(B)はその要部を拡大した部分断面図である。
【図4】 本発明の参考例1の変形例を示し、図3(A)はプッシュプルケーブルの連結機構の要部を破断した図、図3(B)はその要部を拡大した部分断面図である。
【図5】 本発明の参考例2を示し、図3(A)はプッシュプルケーブルの連結機構の要部を破断した図、図3(B)はその変形例の要部を拡大した部分断面図である。
【図6】 従来例に係る図1(A)相当図である。
【図7】 フロントローダを搭載したトラクターの側面図である。
【符号の説明】
1…プッシュプルケーブル、2…インナーワイヤ、3…アウターチューブ、4…同軸矯正手段、9…首振連結具、10…遠隔駆動装置(油圧方向切換弁)、11…従動部材(従動スプール)、12…固定側部材(ケーシング)、16…チューブ固定筒、S…遊動隙間。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a push-pull cable connecting mechanism used for remote operation by connecting a push-pull cable to a remote drive device provided in a front loader, for example.
[0002]
[Prior art]
For example, a hydraulic front loader (21) is mounted on the tractor (20) shown in FIG. The remote control lever (25) and the hydraulic direction switching valve (10) as a remote drive device are connected by a push-pull cable (1), and the hydraulic direction switching valve (10) is remotely controlled by the remote control lever (25). By operating, the hydraulic cylinders (22) and (23) are expanded and contracted via a hydraulic hose (not shown), and the front loader (21) is driven and controlled. As a connecting mechanism of this type of push-pull cable, for example, the one shown in FIG. 6 has been known.
[0003]
As shown in FIG. 6, the connecting mechanism is configured such that the distal end portion of the inner wire (2) is screwed into the driven spool (11) of the remote drive device (10) and fixed by the lock nut (5). The tube fixing cylinder (16) is fixed to the casing (12) of 10) via the assembly tool (13, 14), and the outer tube (3) is screwed into the tube fixing cylinder (16) to lock nut (19). It is fixed and configured. Originally, the tube fixing cylinder (16) and the inner wire (2) are connected to the driven spool (11) in the same axial center (hereinafter referred to as "coaxial").
[0004]
[Problems to be solved by the invention]
However, with the screw fitting play exists between the tip portion of the female screw of the male screw and the driven spool of the distal end portion of the inner wire (2) (11), and the male screw of the inner wire (2) screw fitting backlash also exists between the female screw of the lock nut (5). For this reason, when connecting the inner wire (2) and the driven spool (1), the axis (Z2) of the inner wire (2) may be inclined with respect to the axis (Z1) of the driven spool (11). When (5) is tightened, the inner wire (2) is fixed to the driven spool (11) in the inclined state. Due to the interference resistance between the inner wire and the outer tube caused by the fall of the inner wire (2), the remote drive device may malfunction. To eliminate such inconvenience, adjustment by reassembly is required.
[0005]
The present invention has been made in view of such circumstances, and its purpose is to eliminate the interference resistance with the outer tube caused by the fall of the inner wire to eliminate the malfunction of the remote drive device and to reassemble it. It is an object of the present invention to provide a push-pull cable coupling mechanism that eliminates the need for adjustment by the above.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a push-pull cable coupling mechanism according to the present invention is configured as follows.
That is, according to the first aspect of the present invention, as shown in FIGS. 1 and 2, for example, the inner wire (2) is screwed into the driven member (11) of the remote drive device (10) and the outer tube (3). ) Is fixed to the tube fixing cylinder (16), and the tube fixing cylinder (16) is assembled to the fixed side member (12) of the remote drive device (10). Then, a close fitting portion (2b) formed on the inner wire (2) coaxially with the male screw portion (2a) of the inner wire (2), and the driven member ( screwed into the male screw portion (2a)) 11) it is or integrally internally threaded portion (the driven
[0007]
[0008]
[0009]
[Operation and effect of the invention]
In the first aspect of the present invention, the tube fixing cylinder (16) is arranged coaxially with the driven member (11) of the remote drive device (10) and is fixed to the fixed side member (12). The other inner wire (2) includes a close fitting portion (2b) formed coaxially with the male screw portion (2a ) of the inner wire (2) and a female screw portion (4a) screwed into the male screw portion (2a). And a coaxial correction means (4) comprising a close fitting hole (4b) of a predetermined length (C) coaxially and tightly fitted to the close fitting portion (2b). It is screwed coaxially to the driven member (11). As a result, the inner wire is not collapsed, and the interference between the inner wire and the outer tube is eliminated. Therefore, the malfunction of the remote drive device due to the interference resistance between them is eliminated, and adjustment by reassembly is not necessary.
[0010]
[0011]
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a first embodiment of the present invention, FIG. 1 (A) is a front view in which a principal part of a connection mechanism between a push-pull cable and a remote drive device is broken, and FIG. 1 (B) is a principal part thereof. It is the expanded fragmentary sectional view.
[0013]
As shown in FIG. 1 (A), this push-pull cable coupling mechanism is configured such that the inner wire (2) of the push-pull cable (1) is driven by a driven member (11) of a hydraulic direction switching valve (10) as a remote drive device. And the outer tube (3) of the push-pull cable (1) is assembled to the stationary member (12) of the hydraulic direction switching valve (10) via the tube fixing cylinder (16). Hereinafter, the driven member (11) is referred to as a “driven spool”, and the stationary member (12) is referred to as a “casing”.
[0014]
A male screw (2a) is formed at the tip of the inner wire (2), and a cylindrical coaxial correction means (4) is deeply attached to the male screw (2a) in advance. On the other hand, the cylindrical inner surface of the coaxial correcting means (4), closely Hamaana a predetermined length at a diameter larger than that between the female threaded portion (4a) (C) (4b) are formed coaxially. In a state where the coaxial correction means (4) is mounted on the inner wire (2), the close fitting hole (4b) of the coaxial correction means (4) is tightly fitted in the close fitting portion (2b) of the inner wire (2). And both are fitted coaxially.
[0015]
The driven spool (11) is rotated by a spanner or the like (not shown), and the male screw (2a) is screwed into the driven spool (11). Thereafter, the coaxial straightening means (4) is further tightened toward the driven spool (11), so that the right end surface of the coaxial straightening means (4) comes into contact with the front end surface of the driven spool (11), The fall of the inner wire (2) with respect to the driven spool (11) is corrected. Thereby, an inner wire (2) and a driven spool (11) are connected coaxially.
[0016]
At one end of the tube fixed cylinder (16) collar-shaped flange (17) is formed integrally with the female screw (18) is formed at the other end. The flange (17) is clamped by a pair of clamps (13, 14), and these clamps (13, 14) are fixed to the casing (12) with fixing bolts (15). In this state, the tube fixing cylinder (16) and the driven spool (11) are coaxial.
[0017]
On the other hand, the distal end portion of the outer tube (3) are formed male screw is screwed the male screw into the female screw (18) of the tube fixed cylinder (16), to stop loosening the lock nut (19). In this state, the outer tube (3) and the driven spool (11) are coaxial. Accordingly, even if the inner wire (2) falls down with respect to the driven spool (11), the coaxial straightening means (4) corrects the falling of the inner wire (2) with respect to the driven spool (11), Both are connected coaxially, and the interference between the inner wire (2) and the outer tube (3) is eliminated.
[0018]
FIGS. 2A to 2D are views corresponding to FIG. 1B, each showing a modification of the coaxial correction means (4).
2 (a) shows a first modification of the coaxial correcting means (4), is formed a female screw part (11a) is in the back inboard of the driven spool (11), with a diameter larger than that near the tip end A close fitting hole (11b) having a predetermined length (C) is formed coaxially. In this embodiment, the large-diameter close fitting portion (2b) following the male screw (2a) of the inner wire (2) and the close fitting hole (11b) constitute the coaxial correcting means (4). After the male screw (2a) of the inner wire (2) is screwed into the driven spool (11), the inner wire (2) is loosened with a set screw (6) at the tip of the driven spool (11). As a result, the inner wire (2) and the driven spool (11) are coaxial in a state in which the tight fitting hole (11b) is tightly fitted to the tight fitting portion (2b) of the inner wire (2). Connected to
[0019]
FIG.2 (b) shows the 2nd modification of a coaxial correction means (4). Here is formed close fit portion (2b) on the distal end side of the male thread (2a) of the inner wire (2), the female threaded portion near the tip end of the driven spool (11) (11a), than this on its back inside A close fitting hole (11b) having a small diameter and a predetermined length (C) is formed coaxially. In this embodiment, the close fitting portion (2b) and the close fitting hole (11b) constitute the coaxial correction means (4). After the male screw (2a) of the inner wire (2) is screwed into the driven spool (11), the lock nut (5) at the tip of the driven spool (11) is fastened. Thereby, the inner wire (2) and the driven spool (11) are tightly fitted into the tight fitting portion (2b) of the inner wire (2) with the tight fitting hole (11b) of the driven spool (11). 11) are connected coaxially.
[0020]
FIG.2 (c) shows the 3rd modification (reference example) of a coaxial correction means (4). Here, a close fitting portion (2b) is formed near the tip of the inner wire (2), and a retaining groove (2c) is formed in the close fitting portion (2b). On the other hand, a close fitting hole (11b) having a predetermined length (C) is formed coaxially at the tip of the driven spool (11). In this reference example , the close fitting portion (2b) of the inner wire (2) and the close fitting hole (11b) of the driven spool (11) constitute coaxial correction means (4). The tightly fitting portion (2b) of the inner wire (2) is inserted into the tightly fitting hole (11b) of the driven spool (11) and is prevented from coming off with a set screw (6). Accordingly, the inner wire (2) and the driven spool (11) are in a state in which the close fitting hole (11b) of the driven spool (11) is closely fitted to the tightly fitting portion (2b) of the inner wire (2). Are connected coaxially.
[0021]
FIG.2 (d) shows the 4th modification (reference example) of a coaxial correction means (4). Here, a thick close fitting part (2b) is formed near the tip of the inner wire (2). On the other hand, a close fitting hole (11b) having a predetermined length (C) is formed coaxially near the tip of the driven spool (11). Further, a male screw (11c) is formed near the tip of the driven spool (11), and a retaining nut (7) is screwed onto the male thread (11c) to prevent the tight fitting portion (2b) from coming off.
[0022]
In this reference example , the close fitting portion (2b) of the inner wire (2) and the close fitting hole (11b) of the driven spool (11) constitute coaxial correction means (4). The tight fitting portion (2b) of the inner wire (2) is inserted into the tight fitting hole (11b) of the driven spool (11), and is prevented from coming off by the retaining nut (7). Accordingly, the inner wire (2) and the driven spool (11) are in a state in which the close fitting hole (11b) of the driven spool (11) is closely fitted to the tightly fitting portion (2b) of the inner wire (2). Are connected coaxially.
[0023]
FIG. 3 shows Reference Example 1 of the present invention, FIG. 3 (A) is a front view in which a main part of a push-pull cable coupling mechanism is broken, and FIG. 3 (B) is an enlarged partial sectional view of the main part. . As shown in FIG. 3A, this connecting mechanism connects the inner wire (2) of the push-pull cable (1) to the driven spool (11) as in the conventional example (FIG. 6), and the hydraulic pressure described above. A tube fixing cylinder (16) is assembled to the casing (12) of the direction switching valve (10) via a floating clearance (S), and the outer tube (1) of the push-pull cable (1) is attached to the tube fixing cylinder (16). 3) is fixed.
[0024]
That is, the flange (17) on one end side of the tube fixing cylinder (16) is clamped by the clamping metal fittings (13, 14). In this reference example 1, a larger one of the clamping metal fittings (13) is used. By forming the mounting recess (13a), the loose clearance (S) of the flange (17) is formed. In addition, as shown to FIG. 3 (B), said floating clearance (S) can be easily formed by interposing a spacer (8a) between a pair of clamping metal fittings (13 * 14).
[0025]
In this reference example 1, even when the inner wire (2) is connected to the driven spool (11) in a state where the inner wire (2) is tilted, the tube fixing cylinder (16) is connected to the casing (12). The outer tube (3) follows the fall of the inner wire (2) by assembling via the idle clearance (S). As a result, even when the inner wire falls down, the malfunction of the remote drive device due to the interference resistance between them is eliminated, and adjustment by reassembly is not necessary.
[0026]
FIG. 4 shows a modification of Reference Example 1 of the present invention, FIG. 4 (A) is a front view in which the main part of the push-pull cable coupling mechanism is broken, and FIG. 4 (B) is an enlarged partial cross-sectional view of the main part. FIG. In this modification, the flange (17) on one end side of the tube fixing cylinder (16) is clamped and fixed to a pair of clamps (13, 14), but one clamp (13) is connected to the casing (13). 12) is assembled via a loose clearance (S).
[0027]
That is, as shown in FIGS. 4A and 4B, one clamping bracket (13) has a collar (8c) that is taller than the thickness of the clamping bracket (13) with respect to the casing (12). The assembled bolt (8b) has a freely assembled structure. Also in this modification, the outer tube (3) follows the fall of the inner wire (2). As a result, even when the inner wire falls down, the malfunction of the remote drive device due to the interference resistance between them is eliminated.
[0028]
FIG. 5 shows a reference example 2 of the present invention, FIG. 5 (A) is a front view in which the main part of the coupling mechanism according to the reference example 2 is broken, and FIG. 5 (B) is an enlarged part of the main part according to the modification. It is sectional drawing. In this reference example 2, the inner wire (2) is connected to the driven spool (11) via the swing coupling tool (9) so as to be able to swing, and the tube fixing cylinder (16) is fixed to the casing (12). When done, it is coaxial with the driven spool (11).
[0029]
That is, in Reference Example 2 shown in FIG. 5A, a ball joint (9a) is provided at the tip of the inner wire (2), and the ball joint (9a) is attached to the other driven spool (11) to prevent it from coming off. To be able to swing. In the modification shown in FIG. 5B, a large pin hole (2e) that can be swung is formed at the tip of the inner wire (2), and the pin (9b) is passed through the pin hole (2e). . An insertion hole (11e) for inserting the wire tip portion is formed in the tip portion of the other driven spool (11), the wire tip portion is assembled into the insertion hole (11e) by the pin (9b), and the driven spool (11 ) To the inner wire (2) so as to be swingable.
[0030]
In the reference example 2, the ball joint (9a), the pin hole (2e), and the pin (9b) constitute the swing coupling tool (9). That is, the inner wire (2) connected to the driven spool (11) so as to be able to swing can always follow the outer tube (3). Therefore, the malfunction of the remote drive device due to the interference resistance between the inner wire (2) and the outer tube (3) is eliminated, and adjustment by reassembly is not necessary.
[0031]
In each of the above embodiments, the remote drive device (10) has been described as a hydraulic direction switching valve, but this can be changed to, for example, a lever-type drive means.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of the present invention, FIG. 1 (A) is a cutaway view of a main part of a connection mechanism between a push-pull cable and a remote drive device, and FIG. 1 (B) shows the main part. It is the expanded fragmentary sectional view.
FIGS. 2A to 2D are views corresponding to FIG. 1B, each showing a modification of the coaxial correcting means according to the first embodiment.
FIG. 3 shows Reference Example 1 of the present invention, in which FIG. 3 (A) is a cutaway view of a main part of a push-pull cable coupling mechanism, and FIG. 3 (B) is an enlarged partial cross-sectional view of the main part. .
4 shows a modification of Reference Example 1 of the present invention, FIG. 3 (A) is a cutaway view of a main part of a push-pull cable coupling mechanism, and FIG. 3 (B) is an enlarged partial cross-sectional view of the main part. FIG.
5 shows a reference example 2 of the present invention, FIG. 3 (A) is a cutaway view of a main part of a push-pull cable coupling mechanism, and FIG. 3 (B) is an enlarged partial cross-sectional view of the main part of the modification. FIG.
FIG. 6 is a view corresponding to FIG. 1 (A) according to a conventional example.
FIG. 7 is a side view of a tractor equipped with a front loader.
[Explanation of symbols]
DESCRIPTION OF
Claims (1)
上記インナーワイヤ(2)の雄ねじ部(2a)と同軸状に該インナーワイヤ(2)に形成された密嵌部(2b)と、上記雄ねじ部(2a)に螺合する上記従動部材(11)の雌ねじ部(4a)と同軸状であって上記従動部材(11)と一体に又はそれとは別体に形成され、かつ、上記密嵌部(2b)に同軸状でかつ緊密に外嵌する所定長さ(C)の密嵌孔(4b,11b)とからなる同軸矯正手段(4)を備えており、
上記チューブ固定筒(16)を上記従動部材(11)と同軸状に配置して上記固定側部材(12)に固定するとともに、上記インナーワイヤ(2)を上記同軸矯正手段(4)を介して上記従動部材(11)に同軸状に螺合した、ことを特徴とするプッシュプルケーブルの連結機構。The inner wire (2) is screwed into the driven member (11) of the remote drive device (10), and the outer tube (3) is fixed to the tube fixing cylinder (16). In the push-pull cable coupling mechanism constructed by assembling the fixed side member (12) of the drive device (10),
A close fitting portion (2b) formed on the inner wire (2) coaxially with the male screw portion (2a) of the inner wire (2), and the driven member (11) screwed into the male screw portion (2a ) The female threaded portion (4a) is coaxial with the driven member (11), or is formed separately from the same, and is coaxially and tightly fitted to the tightly fitting portion (2b). A coaxial correction means (4) comprising tightly fitting holes (4b , 11b ) of length (C);
The tube fixing cylinder (16) is arranged coaxially with the driven member (11) and fixed to the fixed side member (12), and the inner wire (2) is connected via the coaxial correction means (4). A push-pull cable coupling mechanism, wherein the follower member (11) is screwed coaxially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000161499A JP4886927B2 (en) | 2000-05-31 | 2000-05-31 | Push-pull cable connection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000161499A JP4886927B2 (en) | 2000-05-31 | 2000-05-31 | Push-pull cable connection mechanism |
Publications (2)
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| JP2001336519A JP2001336519A (en) | 2001-12-07 |
| JP4886927B2 true JP4886927B2 (en) | 2012-02-29 |
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| JP2000161499A Expired - Lifetime JP4886927B2 (en) | 2000-05-31 | 2000-05-31 | Push-pull cable connection mechanism |
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| JP2013036577A (en) * | 2011-08-10 | 2013-02-21 | Chuo Spring Co Ltd | Cable and operation force transmission device |
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| US4100431A (en) * | 1976-10-07 | 1978-07-11 | Motorola, Inc. | Integrated injection logic to linear high impedance current interface |
| JPS56166313A (en) * | 1980-05-27 | 1981-12-21 | Nippon Steel Corp | Method for preventing explosion during reduction of stock line and blowing down of blast furnace |
| JPS5783713A (en) * | 1980-11-11 | 1982-05-25 | Nissan Motor Co Ltd | Intermediate connector of remote operating wire for car door-lock |
| JPS59144218A (en) * | 1983-02-08 | 1984-08-18 | Nippon Telegr & Teleph Corp <Ntt> | Multilevel discriminator |
| JPH0244112A (en) * | 1988-08-03 | 1990-02-14 | Tomoo Tsuchida | Burner using granular heating medium |
| JPH09317935A (en) * | 1996-05-27 | 1997-12-12 | Inax Corp | Shock absorbing mechanism of push one-way type drain cock |
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