JP4664811B2 - Seal structure for operation cable - Google Patents

Seal structure for operation cable Download PDF

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Publication number
JP4664811B2
JP4664811B2 JP2005366747A JP2005366747A JP4664811B2 JP 4664811 B2 JP4664811 B2 JP 4664811B2 JP 2005366747 A JP2005366747 A JP 2005366747A JP 2005366747 A JP2005366747 A JP 2005366747A JP 4664811 B2 JP4664811 B2 JP 4664811B2
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cable
joint
outer tube
adjusting
relative position
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JP2007170490A (en
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哲明 前田
二巳範 亀水
優 川井
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YAMATO INDUSTRIAL CO., LTD.
Honda Motor Co Ltd
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YAMATO INDUSTRIAL CO., LTD.
Honda Motor Co Ltd
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Priority to JP2005366747A priority Critical patent/JP4664811B2/en
Priority to CN 200610171886 priority patent/CN100545468C/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
    • F16C1/10—Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms"
    • F16C1/107—Sealing details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
    • F16C1/10—Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms"
    • F16C1/22—Adjusting; Compensating length
    • F16C1/226—Adjusting; Compensating length by adjusting the effective length of the sheathing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Flexible Shafts (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Description

本発明は、可撓性を有するアウターチューブ内に摺動自在に挿通されて操作子に連結されるインナーケーブルの遊動長を調整する長さ調整手段が、前記操作子との相対位置を一定とした固定部材と、該固定部材との相対位置を調整可能として前記アウターチューブに連結される可動部材とを有して、前記アウターチューブの端部もしくは中間部に設けられる操作ケーブルに関し、特に、インナーケーブル側への水の浸入を防止するためのシール構造の改良に関する。   According to the present invention, the length adjusting means for adjusting the idle length of the inner cable that is slidably inserted into the flexible outer tube and is connected to the operation element has a constant relative position to the operation element. And a movable member connected to the outer tube so that the relative position between the fixed member and the fixed member can be adjusted. The present invention relates to improvement of a seal structure for preventing water from entering the cable side.

アウターチューブの端部に長さ調整手段が設けられ、長さ調整手段を覆うダストブーツで、アウターチューブおよび長さ調整手段とインナーケーブルとの間をシールするようにしたものが、たとえば特許文献１によって知られている。
実開昭５９−１２３６３９号公報 For example, Patent Document 1 discloses a structure in which a length adjusting means is provided at an end of an outer tube and a dust boot covering the length adjusting means is used to seal between the outer tube and the length adjusting means and the inner cable. Known by.
Japanese Utility Model Publication No.59-123039

ところが、上記特許文献１で開示された操作ケーブルでは、長さ調整手段によってインナーケーブルの遊動長を調整する際には、長さ調整手段から外れる位置までダストブーツをずらせる必要があり、調整作業終了後にはダストブーツを元の位置に戻す作業が必要となるので、良好なメンテナンス性および防水性の両立を図ることが困難である。   However, in the operation cable disclosed in Patent Document 1, when adjusting the idle length of the inner cable by the length adjusting means, it is necessary to shift the dust boot to a position where it is disengaged from the length adjusting means. Since it is necessary to return the dust boot to its original position after the completion, it is difficult to achieve both good maintainability and waterproofness.

本発明は、かかる事情に鑑みてなされたものであり、防水性および良好なメンテナンス性の両立を図った操作ケーブルにおけるシール構造を提供することを目的とする。   This invention is made | formed in view of this situation, and it aims at providing the seal structure in the operation cable which aimed at both waterproofness and favorable maintenance property.

上記目的を達成するために、請求項１記載の発明は、可撓性を有するアウターチューブ内に摺動自在に挿通されて操作子に連結されるインナーケーブルの遊動長を調整する長さ調整手段が、前記操作子との相対位置を一定とした固定部材と、該固定部材との相対位置を調整可能として前記アウターチューブに連結される可動部材とを有して、前記アウターチューブの端部もしくは中間部に設けられる操作ケーブルにおいて、円筒状に形成された前記固定部材の端部内周に設けられた段部により前記固定部材の端部に大径孔部が形成され、この大径孔部と、前記固定部材内に摺動可能に挿入された前記可動部材との間に前記インナーケーブル側への水の浸入を防止する環状のシール部材が介装され、前記固定部材を囲繞する円筒状に形成されて前記可動部材の少なくとも前記固定部材寄りの部分を覆う調整操作部材が、その回転操作に応じて前記固定部材に対する前記可動部材の相対位置を調整するようにして前記固定部材に相対回転可能に取付けられ、その取付部は、前記段部から前記固定部材の軸方向に離間して前記固定部材の外周に設けられる係合溝と、前記調整操作部材の前記固定部材側の先端に設けられて、内周を前記係合溝に係合するようにかしめられる薄肉円筒部とで構成され、前記調整操作部材と前記段部との間に前記シール部材が軸方向に挟持されることを特徴とする。 In order to achieve the above object, the invention according to claim 1 is a length adjusting means for adjusting a floating length of an inner cable which is slidably inserted into a flexible outer tube and connected to an operator. Comprises a fixed member having a fixed relative position with respect to the operating element, and a movable member connected to the outer tube so that the relative position with the fixed member can be adjusted, and the end of the outer tube or In the operation cable provided in the intermediate portion, a large-diameter hole is formed at the end of the fixing member by a step provided in the inner periphery of the end of the fixing member formed in a cylindrical shape. An annular seal member that prevents water from entering the inner cable side is interposed between the movable member slidably inserted into the fixed member, and has a cylindrical shape surrounding the fixed member. Formed An adjustment operation member that covers at least a portion of the movable member near the fixed member is attached to the fixed member so as to be rotatable relative to the fixed member so as to adjust a relative position of the movable member with respect to the fixed member according to the rotation operation. The mounting portion is provided at an engagement groove provided on an outer periphery of the fixing member so as to be spaced apart from the step portion in the axial direction of the fixing member, and at an end of the adjustment operation member on the fixing member side. is composed of a thin cylindrical portion that is crimped to the peripheral to engage the engaging groove, characterized in that the sealing member between the adjusting operation member and the stepped portion is clamped in the axial direction .

また請求項２記載の発明は、請求項１記載の発明の構成に加えて、前記調整操作部材の内周に前記可動部材の外周が螺合されることを特徴とする。 Invention or請 Motomeko 2 wherein, in addition to the configuration of the invention according to claim 1, the outer periphery of the movable member on the inner periphery of the adjusting operation member is characterized by being screwed.

さらに請求項３記載の発明は、請求項１または請求項２に記載の発明の構成に加えて、前記シール部材がＯリングであることを特徴とする。 Further, the invention described in claim 3 is characterized in that, in addition to the configuration of the invention described in claim 1 or 2 , the seal member is an O-ring.

なお実施例のスロットルケーブル９が本発明の操作ケーブルに対応し、実施例のスロットルグリップ５が本発明の操作子に対応し、実施例のジョイント１３が本発明の固定部材に対応し、実施例の調整ボルト１８が本発明の可動部材に対応し、実施例の調整ナット２３が本発明の調整操作部材に対応する。   The throttle cable 9 of the embodiment corresponds to the operation cable of the present invention, the throttle grip 5 of the embodiment corresponds to the operation element of the present invention, and the joint 13 of the embodiment corresponds to the fixing member of the present invention. The adjusting bolt 18 corresponds to the movable member of the present invention, and the adjusting nut 23 of the embodiment corresponds to the adjusting operation member of the present invention.

請求項１記載の発明によれば、長さ調整手段が、インナーケーブル側への水の浸入を防止するシール部材を内蔵するものであるので、長さ調整手段によってインナーケーブルの遊動長を調整する際、ならびにその調整作業完了後に、従来のダストブーツのような防水部品を動かすことが不要であり、防水性を確保しつつ良好なメンテナンス性を得ることができる。しかも、シール部材を固定部材の端部に形成された大径孔部と該固定部材内に摺動可能に挿入された可動部材との間に介装せしめるだけの簡単な構造で、インナーケーブルの全周にわたって確実な防水性を確保することができると共に、固定部材に相対回転可能に取付けられる調整操作部材と固定部材の段部との間に前記シール部材が軸方向に挟持されるので、防水構造の一部を構成する部材で長さ調整操作を行うようにして、シール部材を保持するための特別な部材を不要とし、防水構造を少ない部品点数で簡単に構成することができる。 According to the first aspect of the invention, since the length adjusting means incorporates a seal member that prevents water from entering the inner cable, the length of the inner cable is adjusted by the length adjusting means. At the time, and after the adjustment work is completed, it is not necessary to move a waterproof part such as a conventional dust boot, and good maintainability can be obtained while ensuring waterproofness. Moreover, the inner cable of the inner cable has a simple structure in which the seal member is simply interposed between the large-diameter hole formed at the end of the fixed member and the movable member slidably inserted into the fixed member. it is possible to secure a reliable waterproofness over the entire circumference, since the sealing member is sandwiched in the axial direction between the step portion of the adjusting operation member and the fixed member mounted to be relatively rotatable to the fixed member, waterproof The length adjustment operation is performed with a member constituting a part of the structure, a special member for holding the seal member is unnecessary, and the waterproof structure can be easily configured with a small number of parts.

請求項２記載の発明によれば、可動部材の固定部材に対する相対位置を変化させるために、調整操作部材に内周に可動部材の外周を螺合させているので、固定部材に対する可動部材すなわちアウターチューブの相対位置を変化させるための構造を簡略化することができる。 According to the second aspect of the present invention, in order to change the relative position of the movable member to the fixed member, the outer periphery of the movable member is screwed to the inner periphery of the adjustment operation member. The structure for changing the relative position of the tube can be simplified.

さらに請求項３記載の発明によれば、Ｏリングであるシール部材を用いることで、組付け時に可動部材を固定部材内に挿入する際に、シール部材を傷つけることなく固定部材および可動部材間に容易に挿入することができる。 Furthermore, according to the invention of claim 3 , by using the seal member which is an O-ring, when the movable member is inserted into the fixed member at the time of assembly, the seal member is not damaged and is not damaged. Can be inserted easily.

以下、本発明の実施の形態を、添付の図面に示した本発明の一実施例に基づいて説明する。   DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

図１および図２は本発明の一実施例を示すものであり、図１は自動二輪車のスロットルグリップおよびスロットルケーブルの連結部付近を示す図、図２はスロットルケーブルの縦断面図である。   1 and 2 show an embodiment of the present invention. FIG. 1 is a view showing the vicinity of a connecting portion between a throttle grip and a throttle cable of a motorcycle, and FIG. 2 is a longitudinal sectional view of the throttle cable.

先ず図１において、自動二輪車が備えるバー状の操向ハンドル４の右端部には、操作子であるスロットルグリップ５が回動可能に装着されるとともに、スロットルグリップ５の前方に配置されるブレーキレバー６が回動操作可能に取付けられており、前記スロットルグリップ５に隣接して操向ハンドル４に設けられたスロットルハウジング７内には、前記スロットルグリップ５と一体に回動作動するドラム８が収納される。前記スロットルグリップ５による回動操作力は、自動二輪車に搭載されるエンジンのスロットル弁（図示せず）に、前記ドラム８と、本発明の操作ケーブルであるスロットルケーブル９とを介して伝達される。   First, in FIG. 1, a throttle grip 5 as an operator is rotatably mounted on a right end portion of a bar-shaped steering handle 4 provided in the motorcycle, and a brake lever disposed in front of the throttle grip 5. 6 is attached to the steering handle 4 adjacent to the throttle grip 5, and a drum 8 that rotates together with the throttle grip 5 is accommodated in the throttle housing 7. Is done. The turning operation force by the throttle grip 5 is transmitted to a throttle valve (not shown) of an engine mounted on the motorcycle via the drum 8 and the throttle cable 9 which is an operation cable of the present invention. .

なお図１において、スロットルグリップ５からのスロットルケーブル９の延出方向は説明の簡便化のために実際の方向に対して９０度変化させて示している。   In FIG. 1, the extending direction of the throttle cable 9 from the throttle grip 5 is shown by being changed by 90 degrees with respect to the actual direction in order to simplify the explanation.

前記スロットルケーブル９は、可撓性を有するアウターチューブ１０と、該アウターチューブ１０内に摺動自在に挿通されて前記スロットルドラム８に一端部が連結されるインナーケーブル１１と、該インナーケーブル１１の遊動長を調整するようにして前記アウターチューブ１０の前記スロットルドラム８側の端部およびスロットルハウジング７間に設けられる長さ調整手段１２とを備える。   The throttle cable 9 includes a flexible outer tube 10, an inner cable 11 that is slidably inserted into the outer tube 10 and has one end connected to the throttle drum 8, and the inner cable 11 A length adjusting means 12 is provided between the end of the outer tube 10 on the throttle drum 8 side and the throttle housing 7 so as to adjust the idle length.

図２を併せて参照して、スロットルハウジング７の下部には、長さ調整手段１２の一部を構成する固定部材としての円筒状のジョイント１３の一端部が連結される。前記ジョイント１３の一端部はスロットルハウジング７に螺合されており、ジョイント１３のスロットルハウジング７への螺合状態を維持するためのロックナット１４が、スロットルハウジング７に当接するようにしてジョイント１３の一端部に螺合される。これによりジョイント１３は、前記スロットルグリップ５および前記ドラム８との相対位置を一定としてスロットルハウジング７に連結されることになる。   Referring also to FIG. 2, one end of a cylindrical joint 13 as a fixing member constituting a part of the length adjusting means 12 is connected to the lower portion of the throttle housing 7. One end of the joint 13 is screwed into the throttle housing 7, and a lock nut 14 for maintaining the screwed state of the joint 13 to the throttle housing 7 is brought into contact with the throttle housing 7 so that the joint 13 Screwed into one end. As a result, the joint 13 is connected to the throttle housing 7 with the relative position between the throttle grip 5 and the drum 8 being constant.

しかもジョイント１３は、前記スロットルハウジング７から下方に延び、さらに自動二輪車の内方側に向かうように彎曲して形成されるものであり、インナーケーブル１１は該ジョイント１３内に挿通される。またスロットルハウジング７内で前記ジョイント１３の一端にはブーツ３０が装着されており、そのブーツ３０から突出したインナーケーブル１１の一端部は、スロットルグリップ５の回動操作に応じてドラム８への巻き掛け量が多くなるようにして前記ドラム８に巻き掛けられ、インナーケーブル１１の一端に取付けられる係合駒１５がドラム８に係合、連結される。またジョイント１３の他端内周には、前記ドラム８側とは反対側に臨む環状の段部１６を形成するようにして大径孔部１７が設けられる。 In addition, the joint 13 extends downward from the throttle housing 7 and is bent so as to be directed inward of the motorcycle. The inner cable 11 is inserted into the joint 13. Further, a boot 30 is attached to one end of the joint 13 in the throttle housing 7, and one end portion of the inner cable 11 protruding from the boot 30 is wound around the drum 8 in accordance with the turning operation of the throttle grip 5. An engagement piece 15 that is wound around the drum 8 and attached to one end of the inner cable 11 with an increased amount of engagement is engaged and connected to the drum 8. A large-diameter hole 17 is provided on the inner periphery of the other end of the joint 13 so as to form an annular step 16 facing the side opposite to the drum 8 side.

前記長さ調整手段１２は、前記ジョイント１３との相対位置を調整可能として該ジョイント１３の他端部に一端部が摺動可能に挿入される円筒状の可動部材としての調整ボルト１８を備える。この調整ボルト１８は、前記ジョイント１３の他端部に摺動可能に挿入される円筒状の挿入筒部１８ａと、挿入円筒部１８ａの外周よりも大径の外周を有して円筒状に形成されるとともに外周には雄ねじ１９が刻設されるねじ筒部１８ｂと、該ねじ筒部１８ｂよりも大径の外周を有する円筒状の連結筒部１８ｃを有するものであり、挿入筒部１８ａおよびねじ筒部１８ｂの内周は、インナーケーブル１１を挿入可能として同一にかつ面一に連なるように形成され、連結筒部１８ｃの内周は、アウターチューブ１０の一端部を挿入すべく前記挿入筒部１８ａおよびねじ筒部１８ｂの内周よりも大径に形成される。   The length adjusting means 12 includes an adjusting bolt 18 as a cylindrical movable member that can be adjusted in a relative position with the joint 13 and has one end slidably inserted into the other end of the joint 13. The adjustment bolt 18 is formed in a cylindrical shape having a cylindrical insertion tube portion 18a that is slidably inserted into the other end portion of the joint 13 and an outer periphery that is larger in diameter than the outer periphery of the insertion cylinder portion 18a. In addition, the outer periphery includes a screw cylinder portion 18b in which an external thread 19 is engraved, and a cylindrical connecting cylinder portion 18c having an outer diameter larger than that of the screw cylinder portion 18b. The inner periphery of the screw cylinder portion 18b is formed to be continuous and flush with the inner cable 11 so that the inner cable 11 can be inserted, and the inner periphery of the connecting cylinder portion 18c is the insertion cylinder for inserting one end portion of the outer tube 10. It is formed with a larger diameter than the inner periphery of the portion 18a and the screw cylinder portion 18b.

連結筒部１８ｃは、該連結筒部１８ｃ内に挿入されたアウターチューブ１０の一端部外周に内周が食い込むようにかしめられるものであり、調整ボルト１８の他端部はアウターチューブ１０の一端部に連結されることになる。しかも前記連結筒部１８ｃおよびアウターチューブ１０の一端部の連結部は、その連結部の液密性を保持すべくブーツ２０で覆われており、該ブーツ２０を除く部分でアウターチューブ１０は、被覆チューブ２１で覆われる。   The connecting tube portion 18c is caulked so that the inner periphery bites into the outer periphery of one end portion of the outer tube 10 inserted into the connecting tube portion 18c, and the other end portion of the adjusting bolt 18 is one end portion of the outer tube 10. It will be connected to. In addition, the connecting cylindrical portion 18c and the connecting portion at one end of the outer tube 10 are covered with a boot 20 in order to maintain the liquid tightness of the connecting portion, and the outer tube 10 is covered with a portion excluding the boot 20. Covered with a tube 21.

前記ジョイント１３の他端部の大径孔部１７には、環状のシール部材であるＯリング２２が挿入されるものであり、調整ボルト１８の一端部の挿入筒部１８ａがジョイント１３の他端部に摺動可能に挿入されることにより、前記Ｏリング２２は、ジョイント１３の他端部の大径孔部１７および調整ボルト１８の一端部の挿入筒部１８ａ間に介装されることになる。 An O-ring 22, which is an annular seal member, is inserted into the large-diameter hole 17 at the other end of the joint 13, and the insertion tube portion 18 a at one end of the adjustment bolt 18 is connected to the other end of the joint 13. The O-ring 22 is interposed between the large-diameter hole portion 17 at the other end portion of the joint 13 and the insertion tube portion 18 a at one end portion of the adjustment bolt 18 by being slidably inserted into the portion. Become.

さらに前記長さ調整手段１２は、前記ジョイント１３の他端部を囲繞する円筒状に形成されるとともに前記調整ボルト１８の少なくとも前記ジョイント１３寄りの部分を覆う調整操作部材である調整ナット２３を備え、その調整ナット２３は、その回転操作に応じて前記ジョイント１３に対する前記調整ボルト１８の相対位置を調整するようにして前記ジョイント１３に相対回転可能に取付けられる。   Further, the length adjusting means 12 includes an adjusting nut 23 that is formed in a cylindrical shape surrounding the other end of the joint 13 and is an adjusting operation member that covers at least a portion of the adjusting bolt 18 near the joint 13. The adjusting nut 23 is attached to the joint 13 so as to be relatively rotatable so as to adjust the relative position of the adjusting bolt 18 with respect to the joint 13 according to the rotation operation.

前記調整ナット２３は、その一端側（図２の左端側）から順に、薄肉円筒部２３ａ、厚肉円筒部２３ｂ、大径円筒部２３ｃおよび六角ナット部２３ｄとが同軸かつ一体に連なって成り、基本的には段付き円筒状に形成されるものである。薄肉円筒部２３ａは、前記ジョイント１３の他端寄り外周に段部１６から軸方向に離間して設けられる環状の係合溝２４を覆うように形成されるものであり、厚肉円筒部２３ｂは、前記薄肉円筒部２３ａよりも肉厚に形成されて前記ジョイント１３の他端部を囲繞する。また六角ナット部２３ｄの外周は、回転操作を容易とするために六角形の横断面形状を有するように形成され、六角ナット部２３ｄの内周には調整ボルト１８の雄ねじ１９に螺合する雌ねじ２５が刻設される。さらに厚肉円筒部２３ｂおよび六角ナット部２３ｄ間の大径円筒部２３ｃは、軸方向長さを比較的短くしつつ厚肉円筒部２３ｂおよび六角ナット部２３ｄの外面よりも半径方向外方に突出するように形成される。 The adjustment nut 23 is composed of a thin cylindrical portion 23a, a thick cylindrical portion 23b, a large diameter cylindrical portion 23c, and a hexagonal nut portion 23d that are coaxially and integrally connected in order from one end side (left end side in FIG. 2). Basically, it is formed in a stepped cylindrical shape. The thin cylindrical portion 23a is formed so as to cover an annular engagement groove 24 provided on the outer periphery near the other end of the joint 13 so as to be spaced apart from the step portion 16 in the axial direction. The thin cylindrical portion 23a is thicker and surrounds the other end of the joint 13. Further, the outer periphery of the hexagon nut portion 23d is formed to have a hexagonal cross-sectional shape in order to facilitate the rotation operation, and the inner periphery of the hexagon nut portion 23d is a female screw that is screwed into the male screw 19 of the adjusting bolt 18. 25 is engraved. Furthermore, the large-diameter cylindrical portion 23c between the thick-walled cylindrical portion 23b and the hexagonal nut portion 23d protrudes outward in the radial direction from the outer surfaces of the thick-walled cylindrical portion 23b and the hexagonal nut portion 23d while the axial length is relatively short. To be formed.

前記薄肉筒部２３ａは、その内周を前記係合溝２４に係合するようにしてかしめられる。すなわち調整ナット２３の一端部は、前記ジョイント１３の他端寄り外周に、回転かしめによって相対回転可能に取付けられる。しかも調整ナット２３の一端部およびジョイント１３の他端部の連結部は、その連結部の液密性を保持するともにジョイント１３に対する調整ナット２３の相対回転を許容するようにしてブーツ２６で覆われており、該ブーツ２６は前記液密性を高めるために前記厚肉円筒部２３ｂの外周に密接される。   The thin cylindrical portion 23 a is caulked so that the inner periphery thereof engages with the engagement groove 24. That is, one end of the adjusting nut 23 is attached to the outer periphery near the other end of the joint 13 so as to be relatively rotatable by rotational caulking. Moreover, the connecting portion between one end of the adjusting nut 23 and the other end of the joint 13 is covered with a boot 26 so as to maintain the liquid-tightness of the connecting portion and to allow relative rotation of the adjusting nut 23 with respect to the joint 13. The boot 26 is in close contact with the outer periphery of the thick cylindrical portion 23b in order to enhance the liquid tightness.

また調整ナット２３は、その六角ナット部２３ｄの大径円筒部２３ｃ寄りの部分の内周から半径方向内方に張り出す挟持鍔部２３ｅを一体に有するものであり、前記ジョイント１３の他端部および調整ボルト１８の一端部の挿入筒部１８ａ間に介装される前記Ｏリング２２は、ジョイント１３の段部１６および挟持鍔部２３ｅ間に挟持される。   Further, the adjusting nut 23 integrally has a holding hook 23e projecting radially inward from the inner periphery of the portion of the hexagonal nut 23d near the large-diameter cylindrical portion 23c, and the other end of the joint 13 The O-ring 22 interposed between the insertion tube portion 18a at one end of the adjustment bolt 18 is sandwiched between the step portion 16 of the joint 13 and the sandwiching flange portion 23e.

さらに前記調整ボルト１８のねじ筒部１８ｂにおいて調整ナット２３からの突出部外周の雄ねじ１９にはロックナット２７が螺合されるものであり、このロックナット２７を前記調整ナット２３に当接するまで締めつけることにより、調整ナット２３および調整ボルト１８の相対位置、すなわちジョイント１３に対するアウターチューブ１０の相対位置が一定に保持される。   Further, a lock nut 27 is screwed onto the male screw 19 on the outer periphery of the protruding portion from the adjustment nut 23 in the screw cylinder portion 18 b of the adjustment bolt 18. The lock nut 27 is tightened until it abuts against the adjustment nut 23. Thus, the relative position of the adjustment nut 23 and the adjustment bolt 18, that is, the relative position of the outer tube 10 with respect to the joint 13 is held constant.

またジョイント１３に対するアウターチューブ１０の相対位置を変化させてインナーケーブル１１の遊動長を調整する際には、ロックナット２７を緩め、調整ナット２３を回転操作することで調整ナット２３すなわちジョイント１３と、調整ボルト１８すなわちアウターチューブ１０との相対位置を変化させるようにすればよい。   When adjusting the free length of the inner cable 11 by changing the relative position of the outer tube 10 with respect to the joint 13, the adjustment nut 23, that is, the joint 13, What is necessary is just to make it change the relative position with the adjustment bolt 18, ie, the outer tube 10,.

次にこの実施例の作用について説明すると、インナーケーブル１１の遊動長を調整する長さ調整手段１２が、スロットルグリップ５およびドラム８との相対位置を一定としたジョイント１３と、該ジョイント１３との相対位置を調整可能として前記アウターチューブ１０に連結される調整ボルト１８とを有して、前記アウターチューブ１０の一端部に設けられるのであるが、長さ調整手段１２の内部には、インナーケーブル１１側への水の浸入、すなわちアウターチューブ１０に連結された調整ボルト１８およびジョイント１３間から内部への水の浸入を防止するためのＯリング２２が内蔵されている。   Next, the operation of this embodiment will be described. The length adjusting means 12 for adjusting the idle length of the inner cable 11 includes a joint 13 having a fixed relative position between the throttle grip 5 and the drum 8, and the joint 13. An adjustment bolt 18 connected to the outer tube 10 so that the relative position can be adjusted is provided at one end of the outer tube 10. An O-ring 22 for preventing water from entering the inside, that is, the adjustment bolt 18 connected to the outer tube 10 and the water from the inside of the joint 13 to the inside is incorporated.

したがって長さ調整手段１２によってインナーケーブル１１の遊動長を調整する際、ならびにその調整作業完了後に、従来のダストブーツのような防水部品を動かすことが不要であり、防水性を確保しつつ良好なメンテナンス性を得ることができる。   Therefore, when adjusting the idle length of the inner cable 11 by the length adjusting means 12 and after the adjustment work is completed, it is not necessary to move a waterproof part such as a conventional dust boot, which is favorable while ensuring waterproofness. Maintainability can be obtained.

しかもシール部材としてＯリング２２を用いることで、組付け時に調整ボルト１８をジョイント１３内に挿入する際に、Ｏリング２２を傷つけることなくジョイント１３および調整ボルト１８間に容易に挿入することができる。   In addition, by using the O-ring 22 as a sealing member, when the adjustment bolt 18 is inserted into the joint 13 during assembly, it can be easily inserted between the joint 13 and the adjustment bolt 18 without damaging the O-ring 22. .

また円筒状に形成される前記ジョイント１３の大径孔部１７と、円筒状に形成されてジョイント１３内に摺動可能に挿入される前記調整ボルト１８との間に前記Ｏリング２２が介装されているので、それぞれ円筒状であるジョイント１３および調整ボルト１８間にＯリング２２を介装せしめるだけの簡単な構造で、調整ボルト１８およびジョイント１３間から内部への水の浸入を防止して、インナーケーブル１１の全周にわたって確実な防水性を確保することができる。 The O-ring 22 is interposed between the large-diameter hole portion 17 of the joint 13 formed in a cylindrical shape and the adjustment bolt 18 formed in a cylindrical shape and slidably inserted into the joint 13. Therefore, it is possible to prevent the intrusion of water from between the adjusting bolt 18 and the joint 13 with a simple structure in which an O-ring 22 is interposed between the joint 13 and the adjusting bolt 18 each having a cylindrical shape. A certain waterproof property can be secured over the entire circumference of the inner cable 11.

またジョイント１３を囲繞する円筒状に形成されて調整ボルト１８の少なくともジョイント１３寄りの部分を覆う調整ナット２３が、その回転操作に応じて前記ジョイント１３に対する前記調整ボルト１８の相対位置を調整するようにして前記ジョイント１３に相対回転可能に取付けられ、該調整ナット２３が一体に有する挟持鍔部２３ｅおよび前記ジョイント１３の段部１６間にＯリング２２が挟持されるので、防水構造の一部を構成する部材で長さ調整操作を行うようにして、Ｏリング２２を保持するための特別な部材を不要として防水構造を少ない部品点数で簡単に構成することができる。   An adjustment nut 23 that is formed in a cylindrical shape surrounding the joint 13 and covers at least a portion near the joint 13 of the adjustment bolt 18 adjusts the relative position of the adjustment bolt 18 with respect to the joint 13 according to the rotation operation. Since the O-ring 22 is clamped between the clamping hook 23e integrally attached to the adjusting nut 23 and the step 16 of the joint 13, the O-ring 22 is clamped to the joint 13. By performing the length adjustment operation with the constituent members, a special member for holding the O-ring 22 is unnecessary, and the waterproof structure can be easily configured with a small number of parts.

さらに調整ナット２３の内周に前記調整ボルト１８の外周が螺合されるので、ジョイント１３に対する調整ボルト１８すなわちアウターチューブ１０の相対位置を変化させるための構造を簡略化することができる。   Furthermore, since the outer periphery of the adjusting bolt 18 is screwed into the inner periphery of the adjusting nut 23, the structure for changing the relative position of the adjusting bolt 18 relative to the joint 13, that is, the outer tube 10, can be simplified.

以上、本発明の実施例を説明したが、本発明は上記実施例に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行うことが可能である。   Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

たとえば本発明をアウターチューブ１０の中間部に長さ調整手段１２が設けられる操作ケーブルに適用することも可能である。また上記実施例のＯリング２２に代えて、オイルシール等の他のシール部材を用いても同様の効果を得ることができることは言うまでもない。   For example, the present invention can be applied to an operation cable in which the length adjusting means 12 is provided in the intermediate portion of the outer tube 10. It goes without saying that the same effect can be obtained by using another seal member such as an oil seal in place of the O-ring 22 of the above embodiment.

自動二輪車のスロットルグリップおよびスロットルケーブルの連結部付近を示す図である。It is a figure which shows the connection part of the throttle grip of a motorcycle, and a throttle cable vicinity. スロットルケーブルの縦断面図である。It is a longitudinal cross-sectional view of a throttle cable.

５・・・操作子であるスロットルグリップ
９・・・操作ケーブルであるスロットルケーブル
１０・・・アウターチューブ
１１・・・インナーケーブル
１２・・・長さ調整手段
１３・・・固定部材であるジョイント
１６・・・段部
１７・・・大径孔部
１８・・・可動部材である調整ボルト
２２・・・シール部材であるＯリング
２３・・・調整操作部材である調整ナット
２３ａ・・・薄肉円筒部
２４・・・係合溝 5 ... Throttle grip 9 as an operator ... Throttle cable 10 as an operation cable ... Outer tube 11 ... Inner cable 12 ... Length adjusting means 13 ... Joint as a fixing member
16 ... Step
17 ... Large-diameter hole 18 ... Adjusting bolt 22 as a movable member ... O-ring 23 as a seal member ... Adjusting nut as an adjusting operation member
23a: Thin cylindrical part
24 ... engaging groove

Claims (3)

可撓性を有するアウターチューブ（１０）内に摺動自在に挿通されて操作子（５）に連結されるインナーケーブル（１１）の遊動長を調整する長さ調整手段（１２）が、前記操作子（５）との相対位置を一定とした筒状の固定部材（１３）と、該固定部材（１３）との相対位置を調整可能として前記アウターチューブ（１０）に連結される可動部材（１８）とを有して、前記アウターチューブ（１０）の端部もしくは中間部に設けられる操作ケーブルにおいて、
円筒状に形成された前記固定部材（１３）の端部内周に設けられた段部（１６）により前記固定部材（１３）の端部に大径孔部（１７）が形成され、
この大径孔部（１７）と、前記固定部材（１３）内に摺動可能に挿入された前記可動部材（１８）との間に前記インナーケーブル（１１）側への水の浸入を防止する環状のシール部材（２２）が介装され、
前記固定部材（１３）を囲繞する円筒状に形成されて前記可動部材（１８）の少なくとも前記固定部材（１３）寄りの部分を覆う調整操作部材（２３）が、その回転操作に応じて前記固定部材（１３）に対する前記可動部材（１８）の相対位置を調整するようにして前記固定部材（１３）に相対回転可能に取付けられ、
その取付部は、前記段部（１６）から前記固定部材（１３）の軸方向に離間して前記固定部材（１３）の外周に設けられる係合溝（２４）と、前記調整操作部材（２３）の前記固定部材（１３）側の先端に設けられて、内周を前記係合溝（２４）に係合するようにかしめられる薄肉円筒部（２３ａ）とで構成され、
前記調整操作部材（２３）と前記段部（１６）との間に前記シール部材（２２）が軸方向に挟持されることを特徴とする操作ケーブルにおけるシール構造。 The length adjusting means (12) for adjusting the idle length of the inner cable (11) that is slidably inserted into the flexible outer tube (10) and is connected to the operating element (5) comprises the operation A cylindrical fixed member (13) having a constant relative position to the child (5), and a movable member (18) connected to the outer tube (10) so that the relative position of the fixed member (13) can be adjusted. ), And an operation cable provided at an end portion or an intermediate portion of the outer tube (10),
A large-diameter hole (17) is formed at the end of the fixing member (13) by the step (16) provided on the inner periphery of the end of the fixing member (13) formed in a cylindrical shape,
Preventing water from entering the inner cable (11) between the large-diameter hole (17) and the movable member (18) slidably inserted into the fixed member (13). An annular seal member (22) is interposed,
An adjustment operation member (23) formed in a cylindrical shape surrounding the fixing member (13) and covering at least a portion of the movable member (18) close to the fixing member (13) is fixed according to the rotation operation. The movable member (18) is attached to the fixed member (13) so as to be rotatable relative to the member (13) so as to adjust the relative position of the movable member (18).
The mounting portion includes an engaging groove (24) provided on an outer periphery of the fixing member (13) at a distance from the step portion (16) in the axial direction of the fixing member (13), and the adjustment operation member (23). ) And a thin cylindrical portion (23a) that is caulked so that the inner periphery engages with the engagement groove (24).
A seal structure for an operation cable , wherein the seal member (22) is sandwiched between the adjustment operation member (23) and the step portion (16) in an axial direction . 前記調整操作部材（２３）の内周に前記可動部材（１８）の外周が螺合されることを特徴とする請求項１記載の操作ケーブルにおけるシール構造。 Seal structure in the operation cable of claim 1, wherein said outer periphery of said movable member inner periphery of the adjusting operation member (23) (18) is screwed. 前記シール部材（２２）がＯリングであることを特徴とする請求項１または請求項２に記載の操作ケーブルにおけるシール構造。 The seal structure for an operation cable according to claim 1 or 2 , wherein the seal member (22) is an O-ring.
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JP2010145156A (en) * 2008-12-17 2010-07-01 Nippon Seiki Co Ltd Position detecting device
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08478U (en) * 1991-10-29 1996-03-08 日本ケーブル・システム株式会社 Control cable seal structure
JPH11210738A (en) * 1998-01-23 1999-08-03 Daihatsu Motor Co Ltd Connection structure of meter cable
JP2002522719A (en) * 1998-08-13 2002-07-23 トランスデイグム・インコーポレーテツド Control cable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08478U (en) * 1991-10-29 1996-03-08 日本ケーブル・システム株式会社 Control cable seal structure
JPH11210738A (en) * 1998-01-23 1999-08-03 Daihatsu Motor Co Ltd Connection structure of meter cable
JP2002522719A (en) * 1998-08-13 2002-07-23 トランスデイグム・インコーポレーテツド Control cable

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