JP2004027880A - Accumulator starter device - Google Patents

Accumulator starter device Download PDF

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Publication number
JP2004027880A
JP2004027880A JP2002181825A JP2002181825A JP2004027880A JP 2004027880 A JP2004027880 A JP 2004027880A JP 2002181825 A JP2002181825 A JP 2002181825A JP 2002181825 A JP2002181825 A JP 2002181825A JP 2004027880 A JP2004027880 A JP 2004027880A
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JP
Japan
Prior art keywords
driven
dog
driving
follower
claw
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Pending
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JP2002181825A
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Japanese (ja)
Inventor
Masayuki Murakami
村上 真之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Kiki Kogyo Co Ltd
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Showa Kiki Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Showa Kiki Kogyo Co Ltd filed Critical Showa Kiki Kogyo Co Ltd
Priority to JP2002181825A priority Critical patent/JP2004027880A/en
Priority to CN 03102089 priority patent/CN1250872C/en
Publication of JP2004027880A publication Critical patent/JP2004027880A/en
Pending legal-status Critical Current

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  • Transmission Devices (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To avoid problems wherein a driving hook is removed to damage a starter device or restarting is made to be impossible, by improving an accumulator starter device interposing a shock-absorbing/accumulating mechanism portion in a midpoint of a drive line between a drive portion and a follower portion. <P>SOLUTION: The accumulator starter device interposes the shock-absorbing/accumulating mechanism portion in the midpoint of the drive line between the drive portion and the follower portion. A ratchet mechanism portion having the driving hook and a follower protrusion as the drive line between an accumulating spring mechanism portion and the follower portion is provided so as to dispose the driving hook of the ratchet mechanism portion in the accumulating spring mechanism portion side and dispose the follower protrusion of the ratchet mechanism portion in the follower portion side. An engaging/disengaging mechanism portion such as a retainer device with friction is provided on the ratchet mechanism, which shows a state that the driving hook is projected out to engage with the follower protrusion in the follower portion side at the time of rope pulling out operation, and shows a state that the driving hook is disengaged to be stored at the time of rope returning operation. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明が属する技術分野】
本発明は、リコイルロープの引き力の変動が少なく滑らかに引くことができる、始動性に優れた内燃エンジンの蓄力型スタータ装置すなわち、駆動部と従動部との間の動力伝達系の途中に緩衝・蓄力機構部を介装した蓄力型スタータ装置の改良に関する。
【0002】
【従来の技術】
従来、この種の蓄力型スタータ装置として次のような構成のものが提供されている。
【0003】
駆動部と従動部との間の動力伝達系の途中に緩衝・蓄力機構部を介在した蓄力型スタータ装置であって、緩衝・蓄力機構部は、駆動部の駆動の過程において当該駆動部の駆動によって従動部と緩衝しつつ蓄力すると共に当該蓄力を付加力となして従動部を駆動する蓄力バネ機構部であり、従動部は、始動前から駆動側と従動側とを係合の状態とする遠心爪を同従動部にもつ遠心爪クラッチを、当該遠心爪の係合が同従動側の回転による遠心力により解除する状態で備え、駆動部による駆動のときには遠心爪クラッチを介して蓄力バネ機構部と直接連動連結して駆動部と一緒に回転するようにした形式、要するに遠心爪クラッチを用いた形式。
【0004】
【発明が解決しようとする課題】
前記従来の技術において述べた遠心爪クラッチを用いた蓄力型スタータ装置は、リコイルロープの引き力の変動が少なく滑らかに引くことができ且つ始動性に優れているという利点を有して好ましいものであったが、依然として次のような問題点は解決されていない。
【0005】
▲1▼ 従動部側に設置してある遠心爪クラッチの遠心爪は、機関の回転(運転)中にこれと一緒に回転する構成になっていて、運転による振動等を長期に亘って受けることになっているものであって、これが原因で不測に外れ事故を惹起することがあった。
▲2▼ 前記外れた遠心爪クラッチの遠心爪が、スタータ等を損傷させたり、再始動できなくしたりするといったような致命的な不具合があった。
▲3▼ ロープを引いても機関が始動しない場合があるが、この際に引いたロープがスタータ内に戻るときに遠心爪と駆動部側の係合部が必ず接触して異音が発生していた。
▲4▼ 機関の運転中、クランクシャフトに偏荷重がかからないようにするために遠心爪を通常2本設置してバランスを取っているが、機関の排気量等によっては遠心爪が1本でも構わないときがあるのに、バランスを取るためだけで2本使用している場合があり、コスト高を招いている。
▲5▼ また、1本で使用している場合でもバランスを取るために、遠心爪が設置されていない方の形状を、重量が増すような形状にしているというような無駄をしていることがあった。
【0006】
本発明は、前記従来の技術において述べた蓄力型スタータ装置が有する好ましい利点を損なうことなく、前記諸問題点を完全若しくは充分に解消する新規の蓄力型スタータ装置を提供することを目的とする。
【0007】
【課題を解決するための手段】
上記目的を達成するために本発明に係る蓄力型スタータ装置は、駆動部と従動部との間の動力伝達系の途中に緩衝・蓄力機構部を介装した蓄力型スタータ装置であって、蓄力バネ機構部と従動部との動力伝達系として駆動爪および従動突起をもつラチェット機構部を、当該ラチェット機構部の駆動爪が蓄力バネ機構部側となりまた同ラチェット機構部の従動突起が従動部側となる配置として設けると共に当該ラチェット機構部に、ロープの引き出し動作の場合には駆動爪が突出して従動部側の従動突起に係合した状態を呈し且つロープの戻り動作の場合には当該駆動爪の係合を解除して同駆動爪を収納の状態を呈するようにするためのフリクション付きリテーナ装置等係合離脱機構部を設けたものである。
【0008】
【実施例】
図1〜図3に示す実施例は、駆動部1と従動部2との間の動力伝達系の途中に緩衝・蓄力機構部3を介在した蓄力型スタータ装置であって、
緩衝・蓄力機構部3は、駆動部1の駆動の過程において当該駆動部1の駆動によって従動部2と緩衝しつつ蓄力すると共に当該蓄力を付加力となして従動部2を駆動する蓄力バネ機構部4であり、
駆動部1は、従動側の回転速度が同駆動部1の回転速度以上に達したときには駆動爪の係合が解除されるラチェット機構部5を備え、
従動部2は、駆動部1による駆動ときにはラチェット機構部5を介して同駆動部1の駆動の途中から蓄力バネ機構部4と直接連動連結して駆動部1と一緒に回転するようにしてあるものである。
【0009】
すなわち、駆動部1は、エンジン側のファンケース(図示せず)に取付用アダプタ11を介して取付ける形式のスタータケース12内の中央個所にセンター軸13を立設し、このセンター軸13にリール14を回転自在に支承し、このリール14の内側側面に当該リール14のボス部15を囲繞する凹陥部16を、またこの凹陥部16の外周壁に外周方向に向って開口するロープ溝17を設け、当該ロープ溝17の側面にロープ通し孔18を開設してこれにリコイルロープ19の基端部を挿通し、この基端部における凹陥部の外に存する個所にロープ通し孔18の径よりも外径の大きい結び玉20を設け、リコイルロープ19をロープ溝17に捲着とすると共に同リコイルロープ19の先端部をスタータケース12の外に引出し口(図示せず)を介して引き出し自在とする。
【0010】
また、リール14の外側側面にセンター軸13を中心とする円形のバネ室22を一体に設け、このバネ室22にリコイルバネ23を当該リコイルバネ23がリコイルロープ19に捲き戻し力を賦与する状態で装入する。
【0011】
更にこれとは別個に、前記の凹陥部16の開口を塞ぐ状態の蓋兼駆動部材25を構成し、この蓋兼駆動部材25をセンター軸13の先端にセンターネジ27により抜出不能および回転可能に支承すると共に前記蓋兼駆動部材25の中央個所の内面側に安定性を高めるために筒状部28を設けて当該筒状部28を上記ボス部15の外周に回転自在に嵌合してあるものである。
【0012】
また、緩衝・蓄力機構部3は、前記の凹陥部16内に蓄力バネ40を収納し、この蓄力バネ40の内、外端を前記蓋兼駆動部材25の筒状部28と凹陥部16の外周部内とに設けた内、外係止部31,32に係止する。なお、蓄力バネ40の巻き方向は、リコイルロープを引いたときに当該蓄力バネ40に対して回転駆動力を蓄えるようにする。
【0013】
更に、前記センターネジ27の頭部に傘状頭部34付きリテーナ支軸部35を設けると共に当該リテーナ支軸部35を囲繞する筒状の囲い部36を蓋兼駆動部材25の外側面に設けてバネ室37を形成し、このバネ室37内にフリクッションバネ38を捲装すると共にこのフリクッションバネ38とリテーナ支軸部35の先端傘状頭部34との間に後述するドッグ41の係合離脱機能を果す鈎型リテーナ39を、当該鈎型リテーナ39が回転可能な状態およびフリクッションバネ38の弾性で常に制動を受ける状態として支承する。
【0014】
また、鈎型リテーナ39と蓋兼駆動部材25との間に駆動爪として機能するドッグ41を配して当該ドッグ41の揺動中心軸42を蓋兼駆動部材25に回転自在に支承し、また当該ドッグ41の移動空間を囲繞する環状部43をもつクランクプーリ45の内側面に一体に設けると共にこの環状部43の内周面に従動突起として機能するドッグ係止用従動突起44の多数個を等間隔配置に周設とする。
【0015】
前記の鈎型リテーナ39は、ドッグ出し用案内爪47とドッグ引込め用案内爪48と当該鈎型リテーナ39の可動範囲規制用爪49とを有していて、リコイルロープ19を引出すときにはドッグ出し用案内爪47がドッグ41を外方に案内して一つのドッグ係止用従動突起44に係合した状態を呈し、またリコイルロープ19を巻き取るときにはドッグ引込め用案内爪48がドッグ41を内方に案内してドッグ係止用従動突起44との係合状態を解消する。
【0016】
また、従動部2は、内燃機関のクランク軸(図示せず)に螺着されたナット部50を有するクランクプーリ45であって、エンジン側(機関側)のファンケースにスタータケース12を取付けたときには、前記蓋兼駆動部材25と対向した状態となるようにしたものである。
【0017】
すなわち、前記実施例においてリコイルロープ19に対して引き出し操作を加えると、リール14が回転してリコイルバネ22を巻き込み状態とすると共にこのリールの回転に伴って鈎型リテーナ39のドッグ出し用案内爪47がドッグ41とドッグ係止用従動突起44との係合状態を確保し、よってリール14と蓋兼駆動部材25を一体的に回転して蓄力バネ40に蓄力する。
【0018】
このようにして蓄力バネ40の蓄力量すなわちトルク値が前記エンジンからの負荷よりも大きくなった瞬間に当該蓄力バネ40が一挙に解放し、この解放力をクランク軸に伝えてエンジンを回転始動させる。
【0019】
そして、エンジンが始動すると、前記クランク軸側の回転始動によりドッグ41とドッグ係止用従動突起44との係合を自動的に解消し、前記エンジンは安定して回転を継続する。
【0020】
また、前記ドッグ41とドッグ係止用従動突起44との係合が解消されると、リール14がリコイルバネ23により逆転を開始し、この逆転に伴ってリコイルロープ19を同リール14に巻取る。
【0021】
図4〜図6に示す別異の実施例は、ラチェット機構部5が次のように構成されたものであって、その他は前記実施例と同じ様に構成されたものである。
【0022】
すなわち、ラチェット機構部5は、フリクッションバネ38とリテーナ支軸部35の先端傘状頭部34との間に平板状リテーナ51を、当該平板状リテーナ51が回転可能な状態およびフリクッションバネ38の弾性で常に制動を受ける状態として支承すると共にリテーナ支軸部35を囲繞する囲い部36の周りに筒形ドッグ52を回転自在に嵌着する。
【0023】
また、この筒形ドッグ52のクランクプーリ45側の端面に突起状駆動爪53を設け、同クランクプーリ45に突起状駆動爪53が係合するドッグ係止用従動突起54を設け、更に筒形ドッグ52の内周面に平板状リテーナ51の先端が係合する軸方向と平行の案内突壁55を設けると共に筒形ドッグ52の内周面と囲い部36の外周面とに相互に摺動自在に嵌合する軸方向と非平行のスプライン突条56およびスプライン溝57を設けたものである。
【0024】
要するに、前記別異の実施例のラチェット機構部5は、平板状リテーナ51の先端と案内突壁55との係合およびスプライン突条56とスプライン溝57との嵌合ならびにフリクッションバネ38による平板状リテーナ51への制動作用によって、リコイルロープ19の引き出し動作の場合には突起状駆動爪53が突出してドッグ係止用従動突起54に係合した状態を、またリコイルロープ19の戻り動作の場合には前記突起状駆動爪53の係合が解除した状態を呈するようにしたものである。
【0025】
本発明は、駆動爪の係合離脱機構部として他の構成のものを採用して実施すること、蓋兼駆動部材25は蓋部材と駆動部材を兼用しない別々の構成で実施すること、駆動爪および従動突起をアンバランスとならない配置で複数対まで設けて実施すること等は可能である。
【0026】
【発明の効果】
以上の説明から理解できるように、本発明に係るスタータ装置は、ロープ引きハンドルの引き力の変動が小さく、滑らかな引き操作で始動させることができ、力の弱い使用者でも容易に内燃エンジンを始動させることができ、また常に最良のタイミングで内燃エンジンを始動することができ、しかも始動性にも優れている効果を奏するは勿論であるが、特に前記諸問題点の発生の原因となっていた遠心爪をいらなくすることを可能にするものであって、これにより次のような効果を発揮するものである。
【0027】
▲1▼’ 駆動爪(ドッグ)は、機関の回転(運転)始動後にはこれと一緒に回転しない構成としたので、従来例のような機関の回転(運転)中に外れを惹起するようなことがないものであって、スタータ装置等を損傷させたり、再始動できなくしたりするといったような不具合を完全に回避できる。
▲2▼’ 引いたロープがスタータ内に戻るときには、ラチェット機構部の駆動爪が引っ込んで駆動爪ラチェット機構部の係合突起に接触しない構成としてあるので、異音を発生することがない。
▲3▼’ 機関の運転中のときにはラチェット機構部の駆動爪は従動突起から分離された状態を呈するような構成としてあるので、クランクシャフトに偏荷重がかかってアンバランス状態となることがなく、前記▲4▼および▲5▼のような問題点を完全に回避できる。
【図面の簡単な説明】
【図1】本発明の実施例を示す断面図である。
【図2】ドッグの係合の状態で示す図1A−A線に沿う断面図である。
【図3】ドッグの外れの状態で示す図1A−A線に沿う断面図である。
【図4】別異の実施例をドッグの係合の状態で示す断面図である。
【図5】同じくドッグの外れの状態で示す断面図である。
【符号の説明】
1 駆動部
2 従動部
3 緩衝・蓄力機構部
4 蓄力バネ機構部
5 ラチェット機構部
11 取付用アダプタ
12 スタータケース
13 センター軸
14 リール
15 ボス部
16 凹陥部
17 凹陥部
18 ロープ通し孔
19 リコイルロープ
20 結び玉
22 バネ室
23 リコイルバネ
25 蓋兼駆動部材
27 センターネジ
28 筒状部
31 内係止部
32 外係止部
34 傘状頭部
35 リテーナ支軸部
36 囲い部
37 バネ室
38 フリクションバネ
39 鈎状リテーナ
40 蓄力バネ
41 ドッグ
42 中心軸
43 環状部
44 ドッグ係止用従動突起
45 クランクプーリ
47 ドッグ出し用案内爪
48 ドッグ引込め用案内爪
49 可動範囲規制用爪
50 ナット部
51 平板状リテーナ
52 筒形ドッグ
53 突起状駆動爪
54 ドッグ係止用従動突起
55 案内突壁
56 スプライン突条
57 スプライン溝
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a power storage type starter device for an internal combustion engine having excellent startability, in which the pulling force of the recoil rope can be smoothly changed with little fluctuation, that is, in the middle of a power transmission system between a driving unit and a driven unit. The present invention relates to an improvement of a power storage type starter device provided with a buffer / power storage mechanism.
[0002]
[Prior art]
Conventionally, the following structure is provided as this kind of energy storage type starter device.
[0003]
A power storage type starter device in which a buffer / accumulation mechanism is interposed in a power transmission system between a driving unit and a driven unit, wherein the buffer / accumulation mechanism is configured to perform the driving in the process of driving the driving unit. A power storage spring mechanism that drives the driven part by storing the stored power as an additional force while buffering the driven part and driving the driven part, and the driven part connects the drive side and the driven side before starting. A centrifugal claw clutch having a centrifugal claw to be engaged in the driven portion is provided in a state where the engagement of the centrifugal claw is released by centrifugal force due to rotation of the driven side, and the centrifugal claw clutch is driven by the driving portion A type in which the drive unit is rotated by being directly linked with the energy storage spring mechanism through the mechanism, that is, a type using a centrifugal claw clutch.
[0004]
[Problems to be solved by the invention]
The energy storage type starter device using the centrifugal claw clutch described in the above prior art is preferable because it has the advantages that the pulling force of the recoil rope can be smoothly changed with little fluctuation and the startability is excellent. However, the following problems have not been solved.
[0005]
(1) The centrifugal pawl of the centrifugal pawl clutch installed on the driven part rotates together with the engine during rotation (operation), and receives vibrations from operation for a long period of time. This caused unexpected accidents and accidents.
{Circle around (2)} The centrifugal claws of the disengaged centrifugal claw clutches have a fatal inconvenience, such as damaging the starter or the like or making it impossible to restart.
(3) The engine may not start even if the rope is pulled, but at this time, when the pulled rope returns to the starter, the centrifugal claw and the engaging part on the drive unit side always contact, and abnormal noise is generated. I was
(4) During operation of the engine, two centrifugal pawls are usually installed to balance the crankshaft so that an unbalanced load is not applied. However, depending on the displacement of the engine, one centrifugal pawl may be used. Although there are times when there are no such cases, there are cases where two tubes are used just for balancing, resulting in high costs.
(5) In addition, in order to balance even when using a single rod, the shape without the centrifugal claw is wasted, such as increasing the weight. was there.
[0006]
An object of the present invention is to provide a new energy storage starter device that completely or sufficiently eliminates the above-mentioned problems without impairing the preferable advantages of the energy storage starter device described in the related art. I do.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a power storage type starter device according to the present invention is a power storage type starter device in which a buffering / power storage mechanism is interposed in a power transmission system between a driving unit and a driven unit. A ratchet mechanism having a driving claw and a driven protrusion as a power transmission system between the energy storage spring mechanism and the driven portion is provided. The driving claw of the ratchet mechanism is located on the energy storage spring mechanism side, and the ratchet mechanism is driven by the ratchet mechanism. In the case where the protrusion is provided as an arrangement on the driven portion side and the ratchet mechanism portion, in the case of the pull-out operation of the rope, the driving claw is projected and engaged with the driven protrusion on the driven portion side and in the case of the return operation of the rope. Is provided with an engagement / disengagement mechanism such as a retainer device with friction for releasing the engagement of the driving claw so that the driving claw assumes a housed state.
[0008]
【Example】
The embodiment shown in FIGS. 1 to 3 is a power storage type starter device in which a buffer / power storage mechanism unit 3 is interposed in a power transmission system between a driving unit 1 and a driven unit 2,
The buffering / accumulating mechanism unit 3 accumulates energy while buffering the driven unit 2 by driving the driving unit 1 in the process of driving the driving unit 1 and drives the driven unit 2 by using the accumulated power as an additional force. The storage spring mechanism 4,
The drive unit 1 includes a ratchet mechanism unit 5 that disengages the drive claw when the rotation speed on the driven side reaches or exceeds the rotation speed of the drive unit 1,
When driven by the drive unit 1, the driven unit 2 is directly linked with the energy storage spring mechanism unit 4 during the drive of the drive unit 1 via the ratchet mechanism unit 5 so as to rotate together with the drive unit 1. There is something.
[0009]
That is, the drive unit 1 has a center shaft 13 erected at a central position in a starter case 12 of a type that is mounted to a fan case (not shown) on the engine side via a mounting adapter 11, and a reel is mounted on the center shaft 13. 14 is rotatably supported, a concave portion 16 surrounding the boss portion 15 of the reel 14 is provided on an inner side surface of the reel 14, and a rope groove 17 opening outward in the outer peripheral wall of the concave portion 16 is provided. A rope through hole 18 is opened in the side surface of the rope groove 17 and the base end of the recoil rope 19 is inserted into the rope through hole 18. Also, a knot 20 having a large outer diameter is provided, the recoil rope 19 is wound around the rope groove 17, and a tip end of the recoil rope 19 is drawn out of the starter case 12 (not shown). And drawable through.
[0010]
Further, a circular spring chamber 22 centered on the center shaft 13 is provided integrally on the outer side surface of the reel 14, and a recoil spring 23 is mounted on the spring chamber 22 in a state where the recoil spring 23 applies a rewinding force to the recoil rope 19. Enter.
[0011]
Separately from this, a lid / drive member 25 is formed in a state of closing the opening of the recess 16, and the lid / drive member 25 cannot be pulled out and rotated by the center screw 27 at the tip of the center shaft 13. A cylindrical portion 28 is provided on the inner surface side of the central portion of the lid / drive member 25 to enhance stability, and the cylindrical portion 28 is rotatably fitted to the outer periphery of the boss 15. There is something.
[0012]
Further, the buffering / accumulating mechanism 3 accommodates the accumulating spring 40 in the recess 16, and the outer end of the accumulating spring 40 is recessed with the cylindrical portion 28 of the lid / drive member 25. It is locked to the outer locking portions 31 and 32 provided in the outer peripheral portion of the portion 16. The direction of winding of the energy storage spring 40 is such that the rotational driving force is stored in the energy storage spring 40 when the recoil rope is pulled.
[0013]
Further, a retainer support shaft 35 with an umbrella-shaped head 34 is provided on the head of the center screw 27, and a cylindrical enclosure 36 surrounding the retainer support 35 is provided on the outer surface of the lid / drive member 25. A spring 41 is formed in the spring chamber 37, and a free cushion spring 38 is wound in the spring chamber 37, and a dog 41 described later is disposed between the free cushion spring 38 and the head umbrella head 34 of the retainer support shaft 35. The hook-shaped retainer 39 that performs the engagement / disengagement function is supported in a state in which the hook-shaped retainer 39 is rotatable and in a state in which the hook-shaped retainer 39 is constantly braked by the elasticity of the free cushion spring 38.
[0014]
Further, a dog 41 functioning as a driving claw is disposed between the hook-shaped retainer 39 and the lid / drive member 25, and the swing center shaft 42 of the dog 41 is rotatably supported by the lid / drive member 25. A large number of dog-engaged driven projections 44 which are integrally provided on the inner surface of a crank pulley 45 having an annular portion 43 surrounding the moving space of the dog 41 and function as driven projections on the inner peripheral surface of the annular portion 43 are provided. Peripheries are arranged at equal intervals.
[0015]
The hook-shaped retainer 39 has a guide nail 47 for taking out a dog, a guide claw 48 for retracting a dog, and a claw 49 for restricting a movable range of the hook-shaped retainer 39. The guide pawl 47 guides the dog 41 outward and is engaged with one of the dog-engaged driven protrusions 44. When the recoil rope 19 is wound up, the dog retracting guide claw 48 holds the dog 41. It is guided inward to cancel the engagement state with the dog locking driven protrusion 44.
[0016]
The driven part 2 is a crank pulley 45 having a nut part 50 screwed to a crankshaft (not shown) of the internal combustion engine, and the starter case 12 is attached to a fan case on the engine side (engine side). Sometimes, it is in a state of facing the lid / drive member 25.
[0017]
That is, when a pull-out operation is applied to the recoil rope 19 in the above-described embodiment, the reel 14 rotates to bring the recoil spring 22 into a rolled-up state, and the dog-type guide claws 47 of the hook-shaped retainer 39 follow the rotation of the reel. Secures the engagement state between the dog 41 and the dog-engaged driven protrusion 44, so that the reel 14 and the lid / drive member 25 rotate integrally to accumulate energy in the energy accumulating spring 40.
[0018]
In this way, the moment the stored energy, that is, the torque value of the energy storage spring 40 becomes larger than the load from the engine, the energy storage spring 40 is released at once, and this releasing force is transmitted to the crankshaft to rotate the engine. Start.
[0019]
Then, when the engine is started, the engagement between the dog 41 and the dog locking driven protrusion 44 is automatically released by the rotation start on the crankshaft side, and the engine continues to rotate stably.
[0020]
When the engagement between the dog 41 and the dog-engaged driven projection 44 is released, the reel 14 starts to rotate in the reverse direction by the recoil spring 23, and the recoil rope 19 is wound on the reel 14 with the reverse rotation.
[0021]
In another embodiment shown in FIGS. 4 to 6, the ratchet mechanism 5 is configured as follows, and the rest is configured in the same manner as the above embodiment.
[0022]
That is, the ratchet mechanism 5 moves the flat retainer 51 between the free cushion spring 38 and the umbrella-shaped head 34 of the retainer support shaft 35 in a state where the flat retainer 51 is rotatable and when the free cushion spring 38 The cylindrical dog 52 is rotatably fitted around the surrounding portion 36 surrounding the retainer support shaft portion 35 while being supported by the elasticity.
[0023]
Further, a projection driving claw 53 is provided on the end face of the cylindrical dog 52 on the side of the crank pulley 45, and a dog locking driven projection 54 with which the projection driving claw 53 is engaged is provided on the crank pulley 45. On the inner peripheral surface of the dog 52, there is provided a guide projection wall 55 parallel to the axial direction with which the tip of the flat plate retainer 51 is engaged, and the inner peripheral surface of the cylindrical dog 52 and the outer peripheral surface of the enclosure 36 mutually slide. The spline projection 56 and the spline groove 57 are provided so as to fit freely in the non-parallel to the axial direction.
[0024]
In short, the ratchet mechanism section 5 of the above-mentioned different embodiment is configured such that the front end of the flat plate-shaped retainer 51 is engaged with the guide projection wall 55, the spline projection 56 is engaged with the spline groove 57, and the flat cushion spring 38 is used. When the recoil rope 19 is pulled out by the braking action on the hook-shaped retainer 51, the protrusion-shaped driving claw 53 projects and engages with the dog-engaged driven protrusion 54, and when the recoil rope 19 returns. , The state in which the engagement of the protruding drive claw 53 is released.
[0025]
The present invention can be implemented by adopting another configuration as the engagement / disengagement mechanism of the drive claw, the lid / drive member 25 can be implemented by a separate configuration not using the lid member and the drive member, It is also possible to provide a plurality of pairs of driven protrusions in an unbalanced arrangement.
[0026]
【The invention's effect】
As can be understood from the above description, the starter device according to the present invention has a small variation in the pulling force of the rope pulling handle, can be started by a smooth pulling operation, and can easily start the internal combustion engine even with a weak user. Not only can the engine be started, and the internal combustion engine can always be started at the best timing, and the startability is excellent. Of course, this is a cause of the problems described above. This makes it possible to eliminate the need for a centrifugal claw, which has the following effects.
[0027]
{Circle around (1)} The driving claw (dog) is configured not to rotate together with the engine after the rotation (operation) of the engine is started, so that the driving pawl (dog) may come off during the rotation (operation) of the engine as in the conventional example. Since the starter device and the like cannot be damaged or cannot be restarted, such problems can be completely avoided.
{Circle around (2)} When the pulled rope returns to the inside of the starter, the driving claw of the ratchet mechanism is retracted and does not come into contact with the engaging projection of the driving claw ratchet mechanism, so that no abnormal noise is generated.
(3) 'Since the driving pawl of the ratchet mechanism is configured to be separated from the driven projection when the engine is operating, the crankshaft is not imbalanced due to an uneven load applied to the crankshaft. Problems such as (4) and (5) can be completely avoided.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 showing the dog engaged.
FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 showing the dog in a detached state.
FIG. 4 is a sectional view showing another embodiment in a state where a dog is engaged.
FIG. 5 is a sectional view showing the dog in a detached state.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 drive unit 2 driven unit 3 buffering / accumulating mechanism unit 4 accumulating spring mechanism unit 5 ratchet mechanism unit 11 mounting adapter 12 starter case 13 center shaft 14 reel 15 boss unit 16 concave unit 17 concave unit 18 rope passage hole 19 recoil Rope 20 knot 22 spring chamber 23 recoil spring 25 lid / drive member 27 center screw 28 tubular part 31 inner locking part 32 outer locking part 34 umbrella head 35 retainer support shaft part 36 surrounding part 37 spring chamber 38 friction spring 39 Hook-shaped retainer 40 Energy storage spring 41 Dog 42 Center shaft 43 Annular portion 44 Driving protrusion 45 for dog locking Crank pulley 47 Guide claw for dog take-out 48 Guide claw for dog retraction 49 Claw for regulating movable range 50 Nut portion 51 Flat plate Retainer 52 Cylindrical dog 53 Projection-shaped drive claw 54 Dog-driven follower projection 55 Guide projection wall 56 Splat Emissions projections 57 spline groove

Claims (1)

駆動部と従動部との間の動力伝達系の途中に緩衝・蓄力機構部を介装した蓄力型スタータ装置であって、蓄力バネ機構部と従動部との動力伝達系として駆動爪および従動突起をもつラチェット機構部を、当該ラチェット機構部の駆動爪が蓄力バネ機構部側となりまた同ラチェット機構部の従動突起が従動部側となる配置として設けると共に当該ラチェット機構部に、ロープの引き出し動作の場合には駆動爪が突出して従動部側の従動突起に係合した状態を呈し且つロープの戻り動作の場合には当該駆動爪の係合を解除して同駆動爪を収納の状態を呈するようにするためのフリクション付きリテーナ装置等係合離脱機構部を設けたことを特徴とする蓄力型スタータ装置。A power storage type starter device in which a buffering / accumulation mechanism is interposed in a power transmission system between a driving unit and a driven unit, wherein a driving claw is used as a power transmission system between the power storage spring mechanism and the driven unit. And a ratchet mechanism having a driven projection is provided such that the driving claw of the ratchet mechanism is located on the side of the energy storing spring mechanism and the driven projection of the ratchet mechanism is located on the side of the driven part. In the case of the pull-out operation, the driving claw is projected and engaged with the driven protrusion on the driven portion side, and in the case of the return operation of the rope, the driving claw is disengaged and the driving claw is stored. A power storage type starter device comprising an engagement / disengagement mechanism such as a retainer device with friction for exhibiting a state.
JP2002181825A 2002-06-21 2002-06-21 Accumulator starter device Pending JP2004027880A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002181825A JP2004027880A (en) 2002-06-21 2002-06-21 Accumulator starter device
CN 03102089 CN1250872C (en) 2002-06-21 2003-01-29 Power accumulating starter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002181825A JP2004027880A (en) 2002-06-21 2002-06-21 Accumulator starter device

Publications (1)

Publication Number Publication Date
JP2004027880A true JP2004027880A (en) 2004-01-29

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Application Number Title Priority Date Filing Date
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Country Status (2)

Country Link
JP (1) JP2004027880A (en)
CN (1) CN1250872C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8771563B2 (en) 2005-07-12 2014-07-08 Towa Corporation Manufacturing method of optical electronic components and optical electronic components manufactured using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8771563B2 (en) 2005-07-12 2014-07-08 Towa Corporation Manufacturing method of optical electronic components and optical electronic components manufactured using the same

Also Published As

Publication number Publication date
CN1250872C (en) 2006-04-12
CN1472437A (en) 2004-02-04

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