JP6220402B2 - Engine starter - Google Patents

Engine starter Download PDF

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JP6220402B2
JP6220402B2 JP2015541498A JP2015541498A JP6220402B2 JP 6220402 B2 JP6220402 B2 JP 6220402B2 JP 2015541498 A JP2015541498 A JP 2015541498A JP 2015541498 A JP2015541498 A JP 2015541498A JP 6220402 B2 JP6220402 B2 JP 6220402B2
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pinion
ring gear
engine
clutch inner
axial
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JPWO2015053042A1 (en
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慎悟 北島
慎悟 北島
繁彦 小俣
繁彦 小俣
中里　成紀
成紀 中里
宏泰 城吉
宏泰 城吉
和哉 高木
和哉 高木
山田　剛司
剛司 山田
義秋 長澤
義秋 長澤
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Hitachi Astemo Ltd
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Hitachi Automotive Systems Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/067—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement the starter comprising an electro-magnetically actuated lever
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0851—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
    • F02N15/023—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the overrunning type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/062—Starter drives
    • F02N15/063—Starter drives with resilient shock absorbers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/022—Engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
    • F02N2200/048—Information about pinion speed, both translational or rotational speed

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Gear Transmission (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Description

本発明は、エンジン始動装置に関する。   The present invention relates to an engine starting device.

環境対策及びエネルギー資源の節約のために、自動車を運転中にエンジンの一時停止が許容される所定条件が成立したときに、エンジンに供給する燃料を遮断することによりアイドリングを自動的にストップさせる事が考えられており、既に一部の自動車において実施されている。   In order to save environmental resources and save energy resources, idling can be automatically stopped by shutting off the fuel supplied to the engine when a predetermined condition is established that allows the engine to pause while the vehicle is in operation. Is already being implemented in some automobiles.

このアイドルストップにおいて、エンジンが完全に停止した後に再始動を行う場合は、エンジンのリングギヤも完全に停止しており、従来のエンジン始動装置でも容易にエンジンの再始動を行える。   In this idle stop, when restarting after the engine is completely stopped, the ring gear of the engine is also completely stopped, and the engine can be easily restarted even with a conventional engine starter.

ところが、アイドルストップが実施された後のエンジンが惰性回転中に、例えば交差点の信号が青色となり、運転者による発進操作（一例としてブレーキペダルの解除）が行われた場合、従来のエンジン始動装置ではエンジンのリングギヤが完全に停止しないとエンジンの再始動が行えず、運転者の再始動要求に俊敏に対応できないばかりか、後続車等の周りの交通機関に迷惑を掛けてしまうおそれがある。   However, when the engine after idle stop is coasting, for example, the signal at the intersection turns blue and the driver performs a starting operation (for example, release of the brake pedal). If the ring gear of the engine does not stop completely, the engine cannot be restarted, and not only the driver's restart request can be responded promptly, but there is a possibility that the transportation around the following vehicle or the like may be disturbed.

これに対し、アイドルストップ後のエンジン惰性回転中に、まずピニオンを押し出してリングギヤに噛み込ませてから、モータに通電してエンジンを再始動させる技術が示されている（特許文献１）。   On the other hand, a technique is disclosed in which, during engine inertia rotation after idle stop, a pinion is first pushed out and engaged with a ring gear, and then the motor is energized to restart the engine (Patent Document 1).

特許第４６４５７７１号公報Japanese Patent No. 4645771

特許文献１に示される従来の技術では、まずピニオン押し出し手段を作動させてリングギヤに噛み込ませる第一のタイミングと、ピニオンがリングギヤに噛み込んだ後にモータへ通電する第二のタイミングとを、所定の遅延時間として設定している。このため、所定の時間未満でピニオンがリングギヤに噛み込んだ場合でも、所定の時間が経過するまでモータに通電されないため、エンジンの再始動要求に俊敏に対応できないという課題がある。   In the prior art disclosed in Patent Document 1, firstly, a first timing at which the pinion pushing means is actuated to be engaged with the ring gear and a second timing at which the motor is energized after the pinion is engaged with the ring gear are predetermined. The delay time is set. For this reason, even when the pinion is engaged in the ring gear in less than a predetermined time, the motor is not energized until the predetermined time elapses, so that there is a problem that it is not possible to quickly respond to the engine restart request.

そこで、本発明は、エンジンの再始動要求に俊敏に対応できるエンジン始動装置を提供する。   Therefore, the present invention provides an engine starter that can quickly respond to an engine restart request.

上記課題を解決するために、本発明のエンジン始動装置は、
モータと、
前記モータの回転力が伝達される出力軸と、
前記出力軸上に形成されたヘリカルスプラインにより前記出力軸に係合され、前記ヘリカルスプラインを介して、前記モータの回転力をエンジンのクランク軸のリングギヤに伝達するピニオン移動体と、
一対の可動鉄心及び固定鉄心を有し、通電することにより吸引力を発生するマグスイッチと、
この吸引力により前記ピニオン移動体を前記リングギヤに噛み合うように押し出すレバーと、を備え、
前記ピニオン移動体は、クラッチインナを有する一方向クラッチと、前記クラッチインナにストレートスプラインで係合され前記クラッチインナ上を移動可能に構成されることにより前記出力軸上を軸方向に移動可能に設けられたピニオンと、前記クラッチインナと前記ピニオンとの間にセット荷重を持つように設置された弾性体と、を含んで構成され、
エンジンのアイドルストップ後の前記リングギヤの惰性回転中であって、前記リングギヤの回転数より前記ピニオンの回転数が小さいときに、前記ピニオンが前記リングギヤに噛み込む噛み込み動作を起こすエンジン始動装置において、
前記ピニオンが前記弾性体を撓ませながら前記クラッチインナ上を移動可能な軸方向移動量をＬ１、前記リングギヤの軸方向ピニオン側端面の回転方向前方側に設けた面取りの軸方向長さをＬ２、前記ピニオンの軸方向リングギヤ側端面の回転方向後方側に設けた面取りの軸方向長さをＬ３とした場合に、Ｌ１、Ｌ２及びＬ３は、Ｌ１＞Ｌ２で、かつＬ１＞Ｌ３となるように設定され、
エンジンのアイドルストップ後の前記リングギヤの惰性回転中であって、前記リングギヤの回転数より前記ピニオンの回転数が小さいときに、前記ピニオンの前記リングギヤ側の端面と前記リングギヤの前記ピニオン側の端面とが接触した状態から、前記ピニオンの前記端面が前記リングギヤの惰性回転により前記リングギヤの前記端面から外れて、前記ピニオンが前記リングギヤに噛み込む際に、前記ピニオンは、前記ピニオンの前記面取りと前記リングギヤの前記面取りとが衝突する前に、前記ピニオンの前記面取りの軸方向長さＬ３及び前記リングギヤの前記面取りの軸方向長さＬ２よりも長い距離を前記出力軸の軸方向に移動して、前記リングギヤに噛み込むように設定される。 In order to solve the above problems, an engine starter according to the present invention provides:
A motor,
An output shaft to which the rotational force of the motor is transmitted;
A pinion moving body which is engaged with the output shaft by a helical spline formed on the output shaft, and transmits the rotational force of the motor to a ring gear of an engine crankshaft through the helical spline;
A mug switch that has a pair of movable iron core and fixed iron core, and generates a suction force when energized;
A lever that pushes the pinion moving body so as to mesh with the ring gear by this suction force, and
The pinion moving body is configured to be movable in the axial direction on the output shaft by being configured to be movable on the clutch inner by being engaged with the clutch inner by a straight spline and a clutch inner having a clutch inner. And an elastic body installed to have a set load between the clutch inner and the pinion,
In the engine starting device that causes a biting operation in which the pinion bites into the ring gear when the rotation of the pinion is smaller than the rotation number of the ring gear during inertial rotation of the ring gear after engine idle stop,
L1 is the amount of axial movement that the pinion can move on the clutch inner while bending the elastic body, and L2 is the axial length of the chamfer provided on the front side in the rotational direction of the end surface on the pinion side of the ring gear. L1, L2, and L3 are set such that L1> L2 and L1> L3 when the axial length of the chamfering provided on the rear side in the rotational direction of the end surface on the axial ring gear side of the pinion is L3. And
During the inertial rotation of the ring gear after an idle stop of the engine, and when the rotation speed of the pinion is smaller than the rotation speed of the ring gear, the end surface on the ring gear side of the pinion and the end surface on the pinion side of the ring gear When the pinion is disengaged from the end surface of the ring gear by inertial rotation of the ring gear from the contact state, the pinion is engaged with the ring gear and the pinion is chamfered with the ring gear. Before the chamfering of the pinion collides, the axial length L3 of the chamfering of the pinion and the axial length L2 of the chamfering of the ring gear are moved in the axial direction of the output shaft, It is set to bite into the ring gear.

本発明によれば、エンジンの再始動要求に俊敏に対応できるエンジン始動装置を提供することができる。
上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされるADVANTAGE OF THE INVENTION According to this invention, the engine starting apparatus which can respond quickly to the restart request | requirement of an engine can be provided.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

エンジン始動装置の全体図（実施例）General view of engine starter (Example) ピニオン移動体周りの拡大図（実施例）Enlarged view around the pinion moving body (Example) エンジン始動装置の全体図（従来例）General view of engine starter (conventional example) 停止中のリングギヤにピニオンが噛み合う過程の状態を示す正面図と断面図Front view and sectional view showing a state where the pinion meshes with the ring gear being stopped 惰性回転中のリングギヤに、ピニオンが噛み込む過程の状態を示す正面図と断面図（従来例）Front view and sectional view showing the state in which the pinion bites into the ring gear during inertial rotation (conventional example) 惰性回転中のリングギヤに、ピニオンが噛み込む過程の状態を示す正面図と断面図（実施例）Front view and sectional view showing a state in which a pinion bites into a ring gear during inertial rotation (Example) 実施例のピニオンと従来例のピニオン移動体の軸方向移動量と時間の関係図Relationship diagram between axial movement amount and time of pinion of embodiment and pinion moving body of conventional example

以下、図面を用いて実施例を説明する。   Embodiments will be described below with reference to the drawings.

図１は、本発明の装置の一例を示すエンジン始動装置の全体図である。エンジン始動装置１はハーネス２によりバッテリ３に接続されており、通電によりモータ４の回転力は出力軸５を介してヘリカルスプイライン（図示せず）により係合されたピニオン移動体６に伝達される。ピニオン移動体６は、一方向クラッチ７と、一方向クラッチ７のクラッチインナ７ａにストレートスプライン（図示せず）で係合されたピニオン８と、クラッチインナ７ａとピニオン８の間に、セット荷重を持って設置された弾性体９と、ピニオン８は弾性体９のセット荷重によりピニオンストッパ７ｃに押し付けられており、クラッチインナ７ａにはピニオン８の軸方向ストローク量を規制するストッパ７ｂを設けて構成され、ピニオン８はクラッチインナ７ａ上に設けられたストレートスプライン（図示せず）上を、弾性体９を撓ませながら、ストッパ７ｂに当接するまで軸方向に移動可能な様に設置されている。   FIG. 1 is an overall view of an engine starting device showing an example of the device of the present invention. The engine starter 1 is connected to a battery 3 by a harness 2, and the rotational force of the motor 4 is transmitted via an output shaft 5 to a pinion moving body 6 engaged by a helical spiline (not shown) through energization. Is done. The pinion moving body 6 applies a set load between the one-way clutch 7, the pinion 8 engaged with the clutch inner 7a of the one-way clutch 7 by a straight spline (not shown), and the clutch inner 7a and the pinion 8. The holding elastic body 9 and the pinion 8 are pressed against the pinion stopper 7c by the set load of the elastic body 9, and the clutch inner 7a is provided with a stopper 7b for regulating the axial stroke amount of the pinion 8. The pinion 8 is installed on a straight spline (not shown) provided on the clutch inner 7a so as to be movable in the axial direction until it abuts against the stopper 7b while bending the elastic body 9.

マグスイッチ１０に通電することにより吸引力を発生し、この吸引力によりレバー１１を介して、ピニオン移動体６をエンジンクランク軸（図示せず）のリングギヤ１２に噛み合うように押し出し、かつモータ４への通電を行う接点（図示せず）を介し、バッテリ３の電気エネルギーをモータ４へ供給するように構成され、モータ４の回転力を出力軸５及びピニオン移動体６を介して、エンジンクランク軸のリングギヤ１２に伝達することにより、エンジンがクランキングされてエンジンが始動する。なおモータ４と出力軸５の間に、モータ４のトルクを増幅するための減速機を設けても良い。   By energizing the mag switch 10, a suction force is generated, and the pinion moving body 6 is pushed by the suction force so as to mesh with the ring gear 12 of the engine crankshaft (not shown) via the lever 11 and to the motor 4. The electric energy of the battery 3 is supplied to the motor 4 via a contact (not shown) for energizing the engine 4, and the rotational force of the motor 4 is supplied to the engine crankshaft via the output shaft 5 and the pinion moving body 6. By transmitting to the ring gear 12, the engine is cranked and the engine is started. A reduction gear for amplifying the torque of the motor 4 may be provided between the motor 4 and the output shaft 5.

図２はピニオン移動体周りの拡大図である。ピニオン８が弾性体９を撓ませならストッパ７ｂに当接するまでのピニオン８の軸方向移動量をＬ１とする。このＬ１は、後述するリングギヤ面取り１３の軸方向長さＬ２やピニオン面取り１４の軸方向長さＬ３に対し、Ｌ１＞Ｌ２および／またはＬ１＞Ｌ３となるように設定する。   FIG. 2 is an enlarged view around the pinion moving body. If the pinion 8 bends the elastic body 9, the axial movement amount of the pinion 8 until it abuts against the stopper 7b is L1. This L1 is set such that L1> L2 and / or L1> L3 with respect to the axial length L2 of the ring gear chamfer 13 and the axial length L3 of the pinion chamfer 14 described later.

図３は従来のピニオン移動体で構成された始動電動の全体図である。ピニオン移動体１７は、一方向クラッチ１５と、クラッチインナと一体的に構成されたピニオン１６とで構成される。なお、ピニオン移動体１７以外の構成部品は、図１の本発明の装置と同じ構成であるため説明を省略する。   FIG. 3 is an overall view of the starting electric motor constituted by a conventional pinion moving body. The pinion moving body 17 includes a one-way clutch 15 and a pinion 16 that is configured integrally with a clutch inner. The components other than the pinion moving body 17 have the same configuration as the apparatus of the present invention shown in FIG.

図４は、エンジンが停止中、すなわち停止中のリングギヤ１２にピニオン８が噛み合う過程の状態を示す正面図と断面図である。リングギヤ１２の軸方向ピニオン側端面には、ピニオン８のリングギヤ１２への噛み込み性を向上させる目的でリングギヤ面取り１３が設置されており、このリングギヤ面取り１３の軸方向長さをＬ２とする。またピニオン８の軸方向リングギヤ側端面には、ピニオン面取り１４が設置されており、このピニオン面取り１４の軸方向長さをＬ３とする。 FIG. 4 is a front view and a cross-sectional view showing a state in which the pinion 8 is engaged with the ring gear 12 when the engine is stopped, that is, when the engine is stopped. A ring gear chamfer 13 is installed on the end surface on the axial pinion side of the ring gear 12 for the purpose of improving the biting property of the pinion 8 into the ring gear 12, and the axial length of the ring gear chamfer 13 is L2. A pinion chamfer 14 is provided on the end surface of the pinion 8 on the axial ring gear side , and the axial length of the pinion chamfer 14 is L3.

回転停止中のリングギヤ１２に対し、モータ４の回転力によりピニオン８が図中の左方向の矢印方向に回転しながらマグスッチ１０の吸引力によりレバー１１を介して押し出されることにより、ピニオン面取り１４がリングギヤ面取り１３上を滑って、ピニオン８がリングギヤ１２へと噛み込む。   When the pinion 8 is pushed through the lever 11 by the suction force of the mag switch 10 while the pinion 8 is rotated in the left arrow direction in the drawing by the rotational force of the motor 4 with respect to the ring gear 12 that is stopped rotating, the pinion chamfer 14 is formed. The pinion 8 bites into the ring gear 12 by sliding on the ring gear chamfer 13.

図５は、エンジンのアイドルストップ後のエンジンの惰性回転中、すなわち惰性回転中のリングギヤ１２に、従来のピニオン移動体１７のピニオン１６が噛み込む過程の状態を示す正面図（上段）と断面図（中段、下段）である。図５の中段は、従来構造のクラッチインナと一体的に構成されたピニオン１６のリングギヤ１２側端面とリングギヤ１２のピニオン１６側端面とが接触した状態を示している。図５の下段は、図５の中段に示した状態から、惰性回転中のリングギヤ１２の回転により、ピニオン１６がリンギギヤ１２への噛み込みを試みた結果、ピニオン１６の軸方向移動量Ｌ４がリングギヤ面取り１３の軸方向長さＬ２やピニオン面取り１４の軸方向長さＬ３よりも小さいため、リングギヤ面取り１３とピニオン面取り１４とが接触してしまい、ピニオン１６のリングギヤ１２への噛み込みが失敗した状態を示している。   FIG. 5 is a front view (upper stage) and a cross-sectional view showing a state in which the pinion 16 of the conventional pinion moving body 17 is engaged with the ring gear 12 during inertial rotation of the engine after idle stop of the engine, that is, inertial rotation. (Middle, lower). The middle part of FIG. 5 shows a state where the end surface on the ring gear 12 side of the pinion 16 and the end surface on the pinion 16 side of the ring gear 12 that are integrally formed with the clutch inner of the conventional structure are in contact with each other. The lower part of FIG. 5 shows the result of the pinion 16 engaging with the ring gear 12 by the rotation of the ring gear 12 during inertia rotation from the state shown in the middle part of FIG. Since the axial length L2 of the chamfer 13 and the axial length L3 of the pinion chamfer 14 are smaller, the ring gear chamfer 13 and the pinion chamfer 14 come into contact with each other, and the pinion 16 has failed to be engaged with the ring gear 12 Is shown.

図６は、エンジンのアイドルストップ後のエンジンの惰性回転中、すなわち惰性回転中のリングギヤ１２に、本発明のピニオン移動体６のピニオン８が噛み込む過程の状態を示す正面図（上段）と断面図（中段、下段）である。図６の中段は、ピニオン８のリングギヤ１２側端面と、リングギヤ１２のピニオン８側端面同士が接触した状態を示している。図６の下段は、図６の中段に示した状態から、惰性回転中のリングギヤ１２の回転により、ピニオン８がリンギギヤ１２への噛み込みを試みた結果、ピニオン８の軸方向移動量Ｌ５がリングギヤ面取り１３の軸方向長さＬ２やピニオン面取り１４の軸方向長さＬ３よりも大きいため、お互いの面取り同士が接触することなく、ピニオン８のリングギヤ１２への噛み込みが成功した状態を示している。   FIG. 6 is a front view (upper stage) and a sectional view showing a state in which the pinion 8 of the pinion moving body 6 of the present invention is engaged with the ring gear 12 during inertial rotation of the engine after idle stop of the engine, that is, inertial rotation. It is a figure (middle stage, lower stage). The middle part of FIG. 6 shows a state in which the end surface on the ring gear 12 side of the pinion 8 and the end surface on the pinion 8 side of the ring gear 12 are in contact with each other. The lower part of FIG. 6 shows the result of the pinion 8 trying to engage the ring gear 12 by the rotation of the ring gear 12 during inertial rotation from the state shown in the middle part of FIG. Since the axial length L2 of the chamfer 13 and the axial length L3 of the pinion chamfer 14 are larger, the chamfering of the pinion 8 into the ring gear 12 is successfully performed without mutual contact between the chamfers. .

図７は、従来構造のピニオン移動体１７と、本発明におけるクラッチインナ７ａとピニオン８とが分離した構造のピニオン移動体６において、ピニオン８の端面やピニオン１６の端面と、リングギヤ１２の端面とが衝突してから、エンジンの惰性回転によるリングギヤ１２の回転により、お互いの端面同士の衝突からピニオン８やピニオン部８ａがリングギヤ１２に噛み込める状態の時のピニオン８やピニオン１６の軸方向リングギヤ１２側への移動量と時間を示している。従来構造のクラッチインナと一体的に構成されたピニオン１６と一方向クラッチ７とで構成されたピニオン移動体１７は、出力軸５とヘリカルスプライン係合されており、ピニオン移動体１７が軸方向リングギヤ側へ移動する際に、ヘリカルスプライン上を滑って回転しながら移動するため、ピニオン移動体１７の軸方向の移動距離Ｌ４は、ヘリカルスプラインの角度をαとすると、ヘリカルスプライン上の移動量にｃｏｓαを乗じた値となる。   FIG. 7 shows a pinion moving body 17 having a conventional structure, and a pinion moving body 6 having a structure in which the clutch inner 7a and the pinion 8 according to the present invention are separated, and the end face of the pinion 8, the end face of the pinion 16, and the end face of the ring gear 12. , The ring gear 12 is rotated by inertial rotation of the engine, and the pinion 8 and the pinion 16 are in the axial direction ring gear 12 when the pinion 8 and the pinion portion 8a are engaged with the ring gear 12 from the collision between the end faces of each other. The amount of movement to the side and the time are shown. A pinion moving body 17 constituted by a pinion 16 and a one-way clutch 7 integrally formed with a clutch inner having a conventional structure is engaged with the output shaft 5 by a helical spline, and the pinion moving body 17 is axially ring geared. When moving to the side, the movement distance L4 in the axial direction of the pinion moving body 17 is determined by the amount of movement on the helical spline when the angle of the helical spline is α. The value multiplied by.

これに対し、本発明のピニオン移動体６は、従来構造のピニオン移動体１７と同じくヘリカルスプライン上を滑って回転しながら移動するため、ピニオン移動体６の軸方向の移動距離は少なくとも前述のＬ４である。更に、本発明のピニオン移動体６は、ピニオン８がクラッチインナ７ａと分離した構造であるため、ピニオン８の端面とリングギヤ１２の端面とが衝突した後は、マグスイッチ１０の吸引力によりレバー１１を介して、リングギヤ１２の端面に衝突して軸方向リングギヤ側への動きが規制されているピニオン８を除くピニオン移動体６が、弾性体９を撓ませながら、ストッパ７ｂまで移動できる。したがって、ピニオン８とリングギヤ１２の端面同士が衝突してから、ピニオン８の回転もしくはエンジンの惰性回転によるリングギヤ１２の回転のどちらかにより、お互いの端面同士の衝突からピニオン８がリングギヤ１２に噛み込める状態の時のピニオン８の軸方向リングギヤ１２側への移動量Ｌ５は、従来構造のピニオン移動体１７の軸方向移動量Ｌ４に、弾性体９を撓ませてストッパ７ｂまで軸方向に移動したピニオン８の軸方向移動量Ｌ１を加えたＬ４＋Ｌ１となる。また、撓んでいる弾性体９の弾性反力により、ピニオン移動体６よりも大幅に軽量なピニオン８が軸方向リングギヤ１２側へ移動できるため、従来構造のピニオン移動体６ａの移動速度を大幅に上回る速度で、本発明のピニオン８は移動可能である。   On the other hand, since the pinion moving body 6 of the present invention moves while sliding on the helical spline like the conventional pinion moving body 17, the movement distance in the axial direction of the pinion moving body 6 is at least the aforementioned L4. It is. Furthermore, since the pinion moving body 6 of the present invention has a structure in which the pinion 8 is separated from the clutch inner 7a, after the end surface of the pinion 8 and the end surface of the ring gear 12 collide, the lever 11 is attracted by the suction force of the mag switch 10. The pinion moving body 6 excluding the pinion 8 that collides with the end face of the ring gear 12 and is restricted from moving toward the axial ring gear can move to the stopper 7b while bending the elastic body 9. Therefore, after the end surfaces of the pinion 8 and the ring gear 12 collide with each other, either the rotation of the pinion 8 or the rotation of the ring gear 12 due to the inertial rotation of the engine causes the pinion 8 to bite into the ring gear 12 from the collision between the end surfaces. The amount of movement L5 of the pinion 8 toward the axial ring gear 12 in the state is the pinion moved in the axial direction up to the stopper 7b by bending the elastic body 9 to the amount of movement L4 of the pinion moving body 17 of the conventional structure. L4 + L1 obtained by adding 8 axial movement amount L1. Further, the elastic reaction force of the elastic body 9 that is bent allows the pinion 8 that is significantly lighter than the pinion moving body 6 to move to the axial ring gear 12 side, so that the moving speed of the pinion moving body 6a having the conventional structure is greatly increased. At higher speeds, the pinion 8 of the present invention is movable.

本発明において、アイドルストップ後のエンジン惰性回転中に、エンジンを再始動させる際のエンジン始動装置の動作を説明する。   In the present invention, the operation of the engine starter when restarting the engine during engine inertia rotation after idle stop will be described.

エンジンのアイドルストップ後のエンジン惰性回転中に、例えば信号が青色に変わった場合、運転者は車両の減速中または車両が停止した状態から、ブレーキを解除しアクセルペダルを踏む動作に移行する。この動作を運転者の再始動要求と捕らえたＥＣＵ（図示せず）は、エンジン始動装置１を動作させるように指示を出す。   For example, when the signal changes to blue during engine inertia rotation after the engine is idle stopped, the driver shifts to the operation of releasing the brake and stepping on the accelerator pedal from the state where the vehicle is decelerating or the vehicle is stopped. An ECU (not shown) that captures this operation as a driver's restart request issues an instruction to operate the engine starter 1.

指示を受けた制御装置（図示せず）は、マグスイッチ１０に通電すべく、リレー（図示せず）を動作させる。バッテリ３からマグスイッチ１０に通電されることにより発生する吸引力にて、レバー１１を介してピニオン移動体６は軸方向リングギヤ１２側へ移動し、リンギギヤ１２のピニオン８側端面に衝突する。ピニオン８がクラッチインナ７ａと分離した構造であるため、ピニオン８の端面とリングギヤ１２の端面同士が衝突した後に、マグスイッチ１０の吸引力によりレバーを介して、リングギヤ１２の端面に衝突して軸方向リングギヤ側への動きが規制されたピニオン８を除くピニオン移動体６が、弾性体９を撓ませながら、ストッパ７ｂまで移動する。つぎに、ピニオン８とリングギヤ１２の端面同士が衝突してから、ピニオン８の回転もしくはエンジンの惰性回転によるリングギヤ１２の回転のどちらかにより、お互いの端面同士の衝突からピニオン８がリングギヤ１２に噛み込める状態となった時に、ピニオン８は軸方向リングギヤ側へ更に移動してリングギヤ１２への噛み込みを試みる。   Upon receiving the instruction, the control device (not shown) operates a relay (not shown) to energize the mug switch 10. The pinion moving body 6 moves to the axial ring gear 12 side via the lever 11 by the attractive force generated by energizing the mag switch 10 from the battery 3, and collides with the pinion 8 side end surface of the ring gear 12. Since the pinion 8 has a structure separated from the clutch inner 7a, after the end surface of the pinion 8 and the end surface of the ring gear 12 collide with each other, the pinion 8 collides with the end surface of the ring gear 12 via the lever by the suction force of the mag switch 10 The pinion moving body 6 excluding the pinion 8 whose movement to the direction ring gear side is restricted moves to the stopper 7b while bending the elastic body 9. Next, after the end surfaces of the pinion 8 and the ring gear 12 collide with each other, either the rotation of the pinion 8 or the rotation of the ring gear 12 due to the inertial rotation of the engine causes the pinion 8 to engage the ring gear 12 from the collision between the end surfaces. When the pinion 8 is in the retractable state, the pinion 8 further moves toward the axial ring gear side and tries to engage with the ring gear 12.

この時、ピニオン８もしくは従来構造のピニオン１６がリングギヤ１２への噛み込みを行うべく軸方向リングギヤ側へ移動するが、この移動量が噛み込みを成功させるか、もしくは失敗するかの重要な因子となる。   At this time, the pinion 8 or the pinion 16 having a conventional structure moves toward the axial ring gear to engage the ring gear 12, and this amount of movement is an important factor as to whether the engagement is successful or unsuccessful. Become.

すなわち、ピニオン８及びピニオン１６とリングギヤ１２の端面衝突状態からの回転により、端面同士が外れて噛み込むことが可能な時間内に、リングギヤ面取りの軸方向長さＬ２よりも、及び／またはピニオン面取り１４の軸方向長さＬ３よりも、ピニオン８の軸方向移動距離Ｌ５が大きい場合は、ピニオン８のリングギヤ１２への噛み込みは成功するが、前記と逆の場合は、リングギヤ面取り１３とピニオン面取り１４同士が衝突してしまい、ピニオン８のリングギヤ１２へのスムーズな噛み込みが行えず、噛み込みが失敗する。   That is, the rotation of the pinion 8 and the pinion 16 and the ring gear 12 from the end surface collision state is less than the axial length L2 of the ring gear chamfering and / or the pinion chamfering within a time period during which the end surfaces can be engaged with each other. When the axial movement distance L5 of the pinion 8 is greater than the axial length L3 of the pin 14, the pinion 8 is successfully engaged with the ring gear 12, but in the opposite case, the ring gear chamfer 13 and the pinion chamfer 14 collide with each other, the smooth engagement of the pinion 8 into the ring gear 12 cannot be performed, and the engagement fails.

以上より、本発明のピニオン８の軸方向移動量Ｌ５は、従来構造のピニオン１６の軸方向移動量Ｌ４に対し、ピニオン８を分離構造として弾性体９を撓ませた状態から噛み込みを開始するため、ピニオンストロークＬ１を加算したピニオン移動量Ｌ５（＝Ｌ４＋Ｌ１）となるため、従来構造のピニオン１６に対して本発明の構造は、惰性回転中のリングギヤ１２へのピニオン８の噛み込み性を大幅に向上することができ、エンジンの再始動要求に俊敏に対応できるエンジン始動装置を提供することができる。   As described above, the axial movement amount L5 of the pinion 8 according to the present invention starts to bite from the state in which the elastic body 9 is bent with the pinion 8 as a separation structure relative to the axial movement amount L4 of the pinion 16 having the conventional structure. Therefore, since the pinion movement amount L5 (= L4 + L1) is obtained by adding the pinion stroke L1, the structure of the present invention significantly increases the biting property of the pinion 8 into the ring gear 12 during inertial rotation compared to the conventional pinion 16. Thus, it is possible to provide an engine starter that can respond rapidly to an engine restart request.

また、撓んでいる弾性体９の弾性反力により、ピニオン移動体６よりも大幅に軽量なピニオン８が軸方向リングギヤ１２側へ移動できるため、従来構造のピニオン移動体６ａの移動速度を大幅に上回る速度で、本発明のピニオン８は移動可能である。   Further, the elastic reaction force of the elastic body 9 that is bent allows the pinion 8 that is significantly lighter than the pinion moving body 6 to move to the axial ring gear 12 side, so that the moving speed of the pinion moving body 6a having the conventional structure is greatly increased. At higher speeds, the pinion 8 of the present invention is movable.

この他、例えば特許文献１の技術では、ピニオン押し出しと接点開閉とを各々の電磁ソレノイドで行う必要があるため、従来のエンジン始動装置用マグネットスイッチの構造に対し複雑となり、小型軽量化や低価格化が困難となる場合がある。更に、ＥＣＵなどからエンジン始動装置を制御する際に、従来のエンジン始動装置のマグスイッチの１系統の配線とリレーに対し、ピニオン押し出し手段と接点開閉手段とを各々の電磁ソレノイドで行うために２系統の配線とリレーが必要となり、車両側でのコストアップの要因となる場合がある。   In addition, for example, in the technique of Patent Document 1, since it is necessary to perform pinion extrusion and contact opening / closing by each electromagnetic solenoid, the structure of the conventional magnet switch for an engine starter is complicated, and the size and weight are reduced and the price is low. May become difficult. Further, when controlling the engine starting device from an ECU or the like, in order to perform pinion pushing means and contact opening / closing means by each electromagnetic solenoid with respect to one wiring and relay of the mag switch of the conventional engine starting device, 2 System wiring and relays are required, which may increase costs on the vehicle side.

本発明によれば、例えば、一対の可動鉄心と固定鉄心でピニオン押し出し手段とモータへの接点開閉手段を行う従来のエンジン始動装置用マグスイッチ構造を用いて、エンジンのアイドルストップ後のエンジン惰性回転中に、ピニオンをエンジンのリングギヤに噛み込ませてモータに通電することより、廉価に、アイドルストップ後の惰性回転中のエンジンを再始動することができるエンジン始動装置を供給することもできる。   According to the present invention, for example, by using a conventional engine starter mag switch structure in which a pinion pushing means and a contact opening / closing means to a motor are paired with a pair of movable iron cores and fixed iron cores, engine inertia rotation after engine idle stop is performed. In addition, an engine starter that can restart the engine during inertial rotation after idling stop can be supplied at low cost by causing the pinion to engage with the ring gear of the engine and energizing the motor.

なお、ピニオン押し出し手段と接点開閉手段とを、各々の電磁ソレノイドで行うマグネットスイッチを採用した始動装置に、本発明のピニオン構造を用いることによっても、惰性回転中のリングギヤへのピニオンの噛み込み性を大幅に向上させることができる。   In addition, by using the pinion structure of the present invention in a starting device that employs a magnet switch in which the pinion pushing means and the contact opening / closing means are each operated by an electromagnetic solenoid, the pinion biting property to the ring gear during inertial rotation is also possible. Can be greatly improved.

なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of the embodiment.

１ エンジン始動装置
２ ハーネス
３ バッテリ
４ モータ
５ 出力軸
６ ピニオン移動体
７ 一方向クラッチ
７ａ クラッチインナ
７ｂ ストッパ
８ ピニオン
９ 弾性体
１０ マグスイッチ
１１ レバー
１２ リングギヤ
１３ リングギヤ面取り
１４ ピニオン面取り
１５ 一方向クラッチ
１６ ピニオン
１７ ピニオン移動体DESCRIPTION OF SYMBOLS 1 Engine starter 2 Harness 3 Battery 4 Motor 5 Output shaft 6 Pinion moving body 7 One-way clutch 7a Clutch inner 7b Stopper 8 Pinion 9 Elastic body 10 Mag switch 11 Lever 12 Ring gear 13 Ring gear chamfer 14 Pinion chamfer 15 One-way clutch 16 Pinion 17 Pinion moving body

Claims (2)

モータと、
前記モータの回転力が伝達される出力軸と、
前記出力軸上に形成されたヘリカルスプラインにより前記出力軸に係合され、前記ヘリカルスプラインを介して、前記モータの回転力をエンジンのクランク軸のリングギヤに伝達するピニオン移動体と、
一対の可動鉄心及び固定鉄心を有し、通電することにより吸引力を発生するマグスイッチと、
この吸引力により前記ピニオン移動体を前記リングギヤに噛み合うように押し出すレバーと、を備え、
前記ピニオン移動体は、クラッチインナを有する一方向クラッチと、前記クラッチインナにストレートスプラインで係合され前記クラッチインナ上を移動可能に構成されることにより前記出力軸上を軸方向に移動可能に設けられたピニオンと、前記クラッチインナと前記ピニオンとの間にセット荷重を持つように設置された弾性体と、を含んで構成され、
エンジンのアイドルストップ後の前記リングギヤの惰性回転中であって、前記リングギヤの回転数より前記ピニオンの回転数が小さいときに、前記ピニオンが前記リングギヤに噛み込む噛み込み動作を起こすエンジン始動装置において、
前記ピニオンが前記弾性体を撓ませながら前記クラッチインナ上を移動可能な軸方向移動量をＬ１、前記リングギヤの軸方向ピニオン側端面の回転方向前方側に設けた面取りの軸方向長さをＬ２、前記ピニオンの軸方向リングギヤ側端面の回転方向後方側に設けた面取りの軸方向長さをＬ３とした場合に、Ｌ１、Ｌ２及びＬ３は、Ｌ１＞Ｌ２で、かつＬ１＞Ｌ３となるように設定され、
エンジンのアイドルストップ後の前記リングギヤの惰性回転中であって、前記リングギヤの回転数より前記ピニオンの回転数が小さいときに、前記ピニオンの前記リングギヤ側の端面と前記リングギヤの前記ピニオン側の端面とが接触した状態から、前記ピニオンの前記端面が前記リングギヤの惰性回転により前記リングギヤの前記端面から外れて、前記ピニオンが前記リングギヤに噛み込む際に、前記ピニオンは、前記ピニオンの前記面取りと前記リングギヤの前記面取りとが衝突する前に、前記ピニオンの前記面取りの軸方向長さＬ３及び前記リングギヤの前記面取りの軸方向長さＬ２よりも長い距離を前記出力軸の軸方向に移動して、前記リングギヤに噛み込むように設定されたことを特徴とするエンジン始動装置。 A motor,
An output shaft to which the rotational force of the motor is transmitted;
A pinion moving body which is engaged with the output shaft by a helical spline formed on the output shaft, and transmits the rotational force of the motor to a ring gear of an engine crankshaft through the helical spline;
A mug switch that has a pair of movable iron core and fixed iron core, and generates a suction force when energized;
A lever that pushes the pinion moving body so as to mesh with the ring gear by this suction force, and
The pinion moving body is configured to be movable in the axial direction on the output shaft by being configured to be movable on the clutch inner by being engaged with the clutch inner by a straight spline and a clutch inner having a clutch inner. And an elastic body installed to have a set load between the clutch inner and the pinion,
In the engine starting device that causes a biting operation in which the pinion bites into the ring gear when the rotation of the pinion is smaller than the rotation number of the ring gear during inertial rotation of the ring gear after engine idle stop,
L1 is the amount of axial movement that the pinion can move on the clutch inner while bending the elastic body, and L2 is the axial length of the chamfer provided on the front side in the rotational direction of the end surface on the pinion side of the ring gear. L1, L2, and L3 are set such that L1> L2 and L1> L3 when the axial length of the chamfering provided on the rear side in the rotational direction of the end surface on the axial ring gear side of the pinion is L3. And
During the inertial rotation of the ring gear after an idle stop of the engine, and when the rotation speed of the pinion is smaller than the rotation speed of the ring gear, the end surface on the ring gear side of the pinion and the end surface on the pinion side of the ring gear When the pinion is disengaged from the end surface of the ring gear by inertial rotation of the ring gear from the contact state, the pinion is engaged with the ring gear and the pinion is chamfered with the ring gear. Before the chamfering of the pinion collides, the axial length L3 of the chamfering of the pinion and the axial length L2 of the chamfering of the ring gear are moved in the axial direction of the output shaft, An engine starter configured to be engaged with a ring gear. 請求項１に記載のエンジン始動装置において、
前記クラッチインナは、前記ピニオンが前記弾性体を撓ませながら軸方向移動量Ｌ１を移動した際に前記ピニオンと当接して前記ピニオンの移動量を規制するストッパを備えることを特徴とするエンジン始動装置。 The engine starter according to claim 1,
The clutch inner includes a stopper that contacts the pinion and regulates the movement amount of the pinion when the pinion moves the axial movement amount L1 while bending the elastic body. .
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