JPH0119066B2 - - Google Patents
Info
- Publication number
- JPH0119066B2 JPH0119066B2 JP12784182A JP12784182A JPH0119066B2 JP H0119066 B2 JPH0119066 B2 JP H0119066B2 JP 12784182 A JP12784182 A JP 12784182A JP 12784182 A JP12784182 A JP 12784182A JP H0119066 B2 JPH0119066 B2 JP H0119066B2
- Authority
- JP
- Japan
- Prior art keywords
- lock
- sliding tube
- sliding
- housing
- ball
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 230000037431 insertion Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 8
- 239000007858 starting material Substances 0.000 claims description 6
- 230000002265 prevention Effects 0.000 description 16
- 210000000078 claw Anatomy 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Gear Transmission (AREA)
Description
【発明の詳細な説明】
本発明は、エンジン始動時始動モータの駆動に
よりピニオンを慣性により前進させてエンジンの
リングギヤに噛合させるようにした、慣性摺動式
始動装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inertial sliding starter device in which a pinion is moved forward by inertia by driving a starter motor when an engine is started, and meshes with a ring gear of the engine.
従来、この種装置として、始動中不整着火によ
りエンジンが激しく回転変動を起こした場合、ピ
ニオンがリングギヤより離脱するのを防止してエ
ンジンのクランキングを間断無く継続させるため
に、早期離脱防止機構を備えたものが知られてい
る（例えば実公昭51−6587号公報参照）が、この
早期離脱防止機構はそれを作動および解除するた
めのロツク環をピニオンの中心線方向に往復動さ
せるようにしているので、装置の前記中心線方向
長さが長くなり、それが大型化するという欠点が
ある。 Conventionally, this type of device has been equipped with an early disengagement prevention mechanism to prevent the pinion from disengaging from the ring gear and allowing the engine to continue cranking without interruption when the engine's rotation fluctuates violently due to irregular ignition during startup. Some devices equipped with this mechanism are known (see, for example, Japanese Utility Model Publication No. 51-6587), but this early disengagement prevention mechanism is designed so that a lock ring for activating and releasing it is reciprocated in the direction of the center line of the pinion. Therefore, the length of the device in the direction of the center line becomes long, which has the drawback of increasing the size.
本発明は早期離脱防止機構を作動および解除す
るロツク環をピニオンの中心線回りに回転させる
ようにして装置の小型化を達成した、前記慣性摺
動式始動装置を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide the above-mentioned inertial sliding type starting device, in which the lock ring for activating and releasing the early release prevention mechanism is rotated around the center line of the pinion, thereby achieving miniaturization of the device.
以下、図面により本発明の一実施例について説
明すると、Ｈは各種機構部を収容するハウジング
で、それは第１図において左側に位置するモータ
収容部２と、中間に位置する減速機収容部３と、
右側に位置する早期離脱防止機構収容部４とより
なる。モータ収容部２と減速機収容部３間の隔壁
５には、モータ収容部２に収容された始動モータ
１の回転軸６が軸受７を介して回転可能に支承さ
れ、その回転軸６先端のピニオン８が減速機収容
部３内に収容された内歯歯車９に噛合する。内歯
歯車９の端壁には、大径部１０、中径部１１およ
び小径部１２よりなる駆動軸１３が一体に突設さ
れており、その駆動軸１３は早期離脱防止機構収
容部４を貫通する。駆動軸１３の大径部１０は減
速機収容部３と早期離脱防止機構収容部４間の隔
壁１４に、軸受１５を介して回転可能に支承さ
れ、一方駆動軸１３の小径部１２の先端は早期離
脱防止機構収容部４の外側壁１６より外部に突出
する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.H is a housing that houses various mechanical parts, which include a motor housing part 2 located on the left side in FIG. 1, and a reducer housing part 3 located in the middle. ,
It consists of an early release prevention mechanism housing section 4 located on the right side. A rotary shaft 6 of the starting motor 1 housed in the motor housing 2 is rotatably supported on the partition wall 5 between the motor housing 2 and the reducer housing 3 via a bearing 7. The pinion 8 meshes with an internal gear 9 housed in the reducer housing 3. A drive shaft 13 consisting of a large diameter portion 10, a medium diameter portion 11, and a small diameter portion 12 is integrally protruded from the end wall of the internal gear 9. penetrate. The large diameter portion 10 of the drive shaft 13 is rotatably supported via a bearing 15 on the partition wall 14 between the reducer accommodating portion 3 and the early detachment prevention mechanism accommodating portion 4, while the tip of the small diameter portion 12 of the drive shaft 13 is It protrudes to the outside from the outer wall 16 of the early release prevention mechanism accommodating portion 4 .
駆動軸１３の中、小径部１１，１２には摺動筒
１７が被せられており、その摺動筒１７の基端側
はヘリカルスプラインs1，s2を介して中径部１１
に螺合され、また中間部内周面に突設された軸受
部１８は軸受１９を介して小径部１２に摺動自在
に支承される。また摺動筒１７は軸受２０を介し
て早期離脱防止機構収容部４の外側壁１６に回転
および摺動可能に支承される。摺動筒１７の先端
外周面には、それと一体に、エンジンのリングギ
ヤ２１と噛合し得るピニオン２２が形成される。 Inside the drive shaft 13, the small diameter portions 11 and 12 are covered with a sliding tube 17, and the base end side of the sliding tube 17 is connected to the medium diameter portion 11 via helical splines s1 and s2 .
A bearing portion 18, which is screwed together and protrudes from the inner circumferential surface of the intermediate portion, is slidably supported by the small diameter portion 12 via a bearing 19. Further, the sliding tube 17 is rotatably and slidably supported by the outer wall 16 of the early detachment prevention mechanism accommodating portion 4 via a bearing 20. A pinion 22 that can mesh with a ring gear 21 of the engine is formed integrally with the outer circumferential surface of the tip of the sliding tube 17.
摺動筒１７の基端側には、駆動軸１３の回転開
始後その摺動筒１７を第１図右方へ前進させるべ
く、回転方向へのみ一定の制動トルクを与えるレ
ーキ機構２３が設けられる。そのブレーキ機構２
３は、摺動筒１７の基端外周面に円周上等間隔に
形成された複数の係合溝２４と、その係合溝２４
の何れか１つと係合し得る係合爪２５をもち、一
端をピン２６により隔壁１４に揺動可能に支承さ
れた揺動アーム２７とを備え、その揺動アーム２
７は電磁作動機構２８により揺動して係合爪２５
を係合溝２４に対し係脱し得るようになつてい
る。 A rake mechanism 23 is provided on the base end side of the sliding tube 17 to apply a constant braking torque only in the rotation direction in order to advance the sliding tube 17 to the right in FIG. 1 after the drive shaft 13 starts rotating. . The brake mechanism 2
3, a plurality of engagement grooves 24 formed at equal intervals on the circumference on the outer peripheral surface of the base end of the sliding tube 17, and the engagement grooves 24.
The swing arm 27 has an engaging claw 25 that can be engaged with any one of the swing arms 2 and 27, and one end of the swing arm 27 is swingably supported on the partition wall 14 by a pin 26.
7 is swung by an electromagnetic actuating mechanism 28 to engage the engaging pawl 25.
can be engaged with and disengaged from the engagement groove 24.
電磁作動機構２８は、第２図に明示するように
早期離脱防止機構収容部４に取付けられたケーシ
ング２９と、その内部に固定されたコイル３０
と、そのコイル３０の中心孔の一端に嵌着された
鉄心３１と、中心孔の他端に摺動自在に嵌入され
たプランジヤ３２と、そのプランジヤ３２の戻し
ばね３３とより構成される。 As clearly shown in FIG. 2, the electromagnetic actuating mechanism 28 includes a casing 29 attached to the early detachment prevention mechanism accommodating section 4, and a coil 30 fixed inside the casing 29.
, an iron core 31 fitted into one end of the center hole of the coil 30, a plunger 32 slidably fitted into the other end of the center hole, and a return spring 33 of the plunger 32.
プランジヤ３２の先端部には、２枚のフランジ
部３４，３５が設けられ、その内側に位置するフ
ランジ部３５とコイルカバー３６との間に戻しば
ね３３が縮設される。コイル３０が通電されてい
ない状態では、戻しばね３３の弾発力でプランジ
ヤ３２の先端がケーシング２９の端壁内面に衝合
し、これによりプランジヤ３２のコイル３０中心
孔からの抜止めがなされている。 Two flange portions 34 and 35 are provided at the tip of the plunger 32, and a return spring 33 is compressed between the flange portion 35 located inside the flange portion 35 and the coil cover 36. When the coil 30 is not energized, the elastic force of the return spring 33 causes the tip of the plunger 32 to abut against the inner surface of the end wall of the casing 29, thereby preventing the plunger 32 from coming out of the center hole of the coil 30. There is.
揺動アーム２７の自由端側には、鉤形に折曲げ
形成された係合ピン３７が突設されており、その
係合ピン３７はプランジヤ３２の２枚のフランジ
部３４，３５間に挿入される。これによりコイル
３０に通電すると鉄心３１が磁されてプランジヤ
３２が第２図右方へ吸引されるので、揺動アーム
２７が第２図時計方向に揺動して係合爪２５が摺
動筒１７の何れか１つの係合溝２４と係合する。
一方コイル３０への通電を断つと、プランジヤ３
２が戻しばね３３の弾性力で第２図左方へ摺動す
るので、係合爪２５が係合溝２４から離脱する。 An engagement pin 37 bent into a hook shape is protruded from the free end side of the swing arm 27, and the engagement pin 37 is inserted between the two flanges 34 and 35 of the plunger 32. be done. As a result, when the coil 30 is energized, the iron core 31 is magnetized and the plunger 32 is attracted to the right in FIG. 2, so the swinging arm 27 swings clockwise in FIG. It engages with any one of the 17 engagement grooves 24.
On the other hand, when the power to the coil 30 is cut off, the plunger 3
2 slides to the left in FIG. 2 by the elastic force of the return spring 33, so that the engagement pawl 25 disengages from the engagement groove 24.
電磁作動機構２８による制動トルクは、摺動筒
１７がリングギヤ２１に衝合して前進を阻止され
たときに、係合溝２４が係合爪２５から外れて摺
動筒１７が回転し得るように設定される。また係
合爪２５の長さは、ピニオン２２とリングギヤ２
１の噛合が略完了するまで係合爪２５と係合溝２
４の係合が続行し得るように決められている。 The braking torque by the electromagnetic actuating mechanism 28 is such that when the sliding tube 17 collides with the ring gear 21 and is prevented from moving forward, the engaging groove 24 is disengaged from the engaging pawl 25 and the sliding tube 17 can rotate. is set to Furthermore, the length of the engaging claw 25 is the same as that between the pinion 22 and the ring gear 2.
The engaging claw 25 and the engaging groove 2 until the engagement of the engaging groove 2 is substantially completed.
It is determined that the engagement of No. 4 can continue.
摺動筒１７と外側壁１６との間には以下に述べ
るような早期離脱防止機構３８が設けられる。 An early detachment prevention mechanism 38 as described below is provided between the sliding tube 17 and the outer wall 16.
即ち、外側壁１６の内面には摺動筒１７を遊挿
させた筒部３９が突設され、その筒部３９周壁に
は180度の位相差を以て一対のボール挿入孔４０
が形成される。各ボール挿入孔４０には、筒部３
９の周壁の厚さよりも大きな直径を有するロツク
ボール４１が遊嵌される。摺動筒１７の基端側外
周面には係合溝２４に隣接させてロツク溝４２が
形成され、各ロツクボール４１の一部は、それが
摺動筒１７の外周面に接触している間は筒部３９
外周面に露出し、一方各ロツクポール４１がロツ
ク溝４２に落込むとその一部は筒部３９外周面よ
り没するようになつている。筒部３９の外周に
は、ロツク環４３が回転可能に配設され、そのロ
ツク環４３の内周面には各ロツクボール４１の一
部が筒部３９外周面より露出しているとき、それ
と係合する一対の逃がし溝４４が形成される。ロ
ツク環４３の外周面には鉤形に折曲げ形成された
係合ピン４５が突設されており、その係合ピン４
５はプランジヤ３２の２枚のフランジ部３４，３
５間に挿入される。これにより電磁作動機構２８
の作動時において摺動筒１７の前進に伴いそれに
対するブレーキ機構２３の制動が解除された後、
即ち揺動アーム２７の係合爪２５から摺動筒１７
の係合溝２４が外れた後、各ロツクボール４１が
ロツク溝４２に落込むと、ロツク溝４３が第２図
時計方向に回動してボール挿入孔４０の開口を閉
塞し、各ロツクボール４１のロツク溝４２からの
外れ止めがなされる。４８はロツク環４３の抜止
めリングである。 That is, a cylindrical portion 39 into which the sliding tube 17 is loosely inserted is protruded from the inner surface of the outer wall 16, and a pair of ball insertion holes 40 are formed on the peripheral wall of the cylindrical portion 39 with a phase difference of 180 degrees.
is formed. Each ball insertion hole 40 has a cylindrical portion 3
A lock ball 41 having a diameter larger than the thickness of the peripheral wall 9 is loosely fitted. A lock groove 42 is formed adjacent to the engagement groove 24 on the outer circumferential surface of the base end of the sliding tube 17, and a portion of each lock ball 41 is in contact with the outer circumferential surface of the sliding tube 17. is the cylindrical part 39
The locking pawls 41 are exposed on the outer circumferential surface, and when each locking pawl 41 falls into the locking groove 42, a portion of the locking pawls 41 is sunk below the outer circumferential surface of the cylindrical portion 39. A lock ring 43 is rotatably disposed on the outer periphery of the cylindrical portion 39, and when a portion of each lock ball 41 is exposed from the outer periphery of the cylindrical portion 39, the lock ring 43 engages with the inner periphery of the lock ring 43. A pair of matching relief grooves 44 are formed. An engagement pin 45 bent into a hook shape is protruded from the outer peripheral surface of the lock ring 43.
5 is the two flange portions 34, 3 of the plunger 32.
It is inserted between 5. As a result, the electromagnetic actuating mechanism 28
When the sliding cylinder 17 moves forward, the brake mechanism 23 releases the brake against the sliding cylinder 17.
That is, from the engaging claw 25 of the swing arm 27 to the sliding tube 17
When the lock balls 41 fall into the lock grooves 42 after the engagement grooves 24 of the lock grooves 24 are disengaged, the lock grooves 43 rotate clockwise in FIG. It is prevented from coming off from the lock groove 42. 48 is a retaining ring for the lock ring 43.
摺動筒１７の軸受部１８と駆動軸１３の小径部
１２先端に抜止め保持されたリテーナ４６との間
には摺動筒１７の戻しばね４７が縮設される。 A return spring 47 of the sliding tube 17 is compressed between the bearing portion 18 of the sliding tube 17 and a retainer 46 held at the tip of the small diameter portion 12 of the drive shaft 13 so as not to come off.
次にこの実施例の作用について説明する。 Next, the operation of this embodiment will be explained.
第１、第２図はエンジン始動前の状態を示し、
摺動筒１７の戻しばね４７の伸長力を受けて基端
端面を駆動軸１３の大径部１０と中径部１１間の
段部に衝合させた後退位置に保持される。また電
磁作動機構２８が不作動なのでプランジヤ３２が
戻しばね３３の伸長力によりケーシング２９の端
壁内面に衝合し、これにより揺動アーム２７が第
２図反時計方向に揺動して、その係合爪２５が摺
動筒１７の係合溝２４から離脱し、また各ロツク
ボール４１が摺動筒１７の外周面に接触して、筒
部３９の外周面より露出する各ロツクボール４１
の一部がロツク環４３の各逃がし溝４４に係合し
ている。 Figures 1 and 2 show the state before starting the engine,
Under the extension of the return spring 47 of the sliding tube 17, the proximal end surface is held in a retracted position where it abuts against the stepped portion between the large diameter portion 10 and the medium diameter portion 11 of the drive shaft 13. Furthermore, since the electromagnetic actuating mechanism 28 is inoperative, the plunger 32 abuts against the inner surface of the end wall of the casing 29 due to the extension force of the return spring 33, and as a result, the swinging arm 27 swings counterclockwise in FIG. The engaging claw 25 is disengaged from the engaging groove 24 of the sliding tube 17, and each lock ball 41 comes into contact with the outer circumferential surface of the sliding tube 17, and each lock ball 41 is exposed from the outer circumferential surface of the cylindrical portion 39.
A part of the lock ring 43 is engaged with each release groove 44 of the lock ring 43.
エンジン始動時には、始動スイツチを入れ始動
モータ１を駆動して回転軸６のピニオン８、内歯
歯車９を介して駆動軸１３を回転させる。同時に
電磁作動機構２８を作動させてプランジヤ３２を
第２図右方に吸引し、揺動アーム２７を第２図時
計方向に揺動させてその係合爪２５を摺動筒１７
の係合溝２４の何れか１つに係合させ、摺動筒１
７に回転方向へのみ制動トルクを与える。 When starting the engine, the starter switch is turned on and the starter motor 1 is driven to rotate the drive shaft 13 via the pinion 8 of the rotary shaft 6 and the internal gear 9. At the same time, the electromagnetic actuating mechanism 28 is activated to attract the plunger 32 to the right in FIG. 2, and the swinging arm 27 is swung clockwise in FIG.
The sliding tube 1 is engaged with any one of the engagement grooves 24 of the
Apply braking torque to 7 only in the direction of rotation.
引続く駆動軸１３の回転により摺動筒１７が、
ブレーキ機構２３に起因する慣性によつて戻しば
ね４７を圧縮しながら第１図右方に前進を開始す
る。そしてピニオン２２の歯がリングギヤ２１の
歯に衝合すると摺動筒１７の前進が阻止されるの
で、摺動筒１７が係合爪２５の係合力に打勝つて
回転し、これによりピニオン２２とリングギヤ２
１が噛合を開始する。この噛合開始後、摺動筒１
７は再び前進し、そして揺動アーム２７の係合爪
２５から摺動筒１７の係合溝２４が離脱した後、
摺動筒１７はリングギヤ２１による慣性によりピ
ニオン２２とリングギヤ２１が噛合を完了するま
で前進を続行する。 Due to the subsequent rotation of the drive shaft 13, the sliding tube 17
While compressing the return spring 47 due to the inertia caused by the brake mechanism 23, the vehicle starts moving forward to the right in FIG. When the teeth of the pinion 22 collide with the teeth of the ring gear 21, the sliding tube 17 is prevented from moving forward, so the sliding tube 17 overcomes the engagement force of the engagement pawl 25 and rotates. Ring gear 2
1 starts meshing. After this meshing starts, the sliding tube 1
7 moves forward again, and after the engagement groove 24 of the sliding tube 17 is disengaged from the engagement claw 25 of the swing arm 27,
The sliding cylinder 17 continues to move forward due to the inertia of the ring gear 21 until the pinion 22 and the ring gear 21 complete meshing.
ピニオン２２とリングギヤ２１が噛合を完了し
たときには、第３、第４図に示すように摺動筒１
７のロツク溝４２に各ロツクボール４１が落込ん
で筒部３９の外周面から各ロツクボール４１の一
部が没する。この時点では摺動筒１７が揺動アー
ム２７より外れているので、電磁作動機構２８の
プランジヤ３２がさらに第２図右方へ吸引されて
第４図に示すように鉄心３１に衝合する。その結
果、ロツク環４３が第２図時計方向に回動して第
４図に示すようにロツク環４３により各ボール挿
入孔４０の開口部が閉塞される。 When the pinion 22 and the ring gear 21 complete meshing, the sliding tube 1
Each lock ball 41 falls into the lock groove 42 of No. 7, and a portion of each lock ball 41 sinks from the outer peripheral surface of the cylindrical portion 39. At this point, the sliding tube 17 has come off the swing arm 27, so the plunger 32 of the electromagnetic actuating mechanism 28 is further attracted to the right in FIG. 2 and collides with the iron core 31 as shown in FIG. As a result, the lock ring 43 rotates clockwise in FIG. 2, and the opening of each ball insertion hole 40 is closed by the lock ring 43 as shown in FIG.
これにより摺動筒１７の前進および後退が早期
離脱防止機構３８の作動によりロツクされるの
で、駆動軸１３の回転力が摺動筒１７に伝達さ
れ、ピニオン２２を介してリングギヤ２１を回転
させてエンジンをクランキングする。 As a result, the forward movement and retraction of the sliding cylinder 17 is locked by the operation of the early release prevention mechanism 38, so the rotational force of the drive shaft 13 is transmitted to the sliding cylinder 17 and rotates the ring gear 21 via the pinion 22. Crank the engine.
この場合、エンジンが不整着火により激しく回
転変動を起こしてリングギヤ２１からピニオン２
２に瞬間的に後退力が働いても、摺動筒１７の後
退は早期離脱防止機構３８により阻止されている
ので、ピニオン２２がリングギヤ２１より離脱す
ることがなく、したがつてエンジンのクランキン
グを継続させ、これを確実に始動することができ
る。 In this case, the engine causes severe rotational fluctuations due to irregular ignition, causing the ring gear 21 to shift from the pinion 2 to the pinion 2.
Even if a momentary retreating force acts on the sliding cylinder 17, the early detachment prevention mechanism 38 prevents the pinion 22 from disengaging from the ring gear 21, which prevents the engine from cranking. can be continued and started reliably.
エンジンの始動後は、摺動筒１７がリングギヤ
２１により高速回転させられ、また戻しばね４７
の弾発力を受けているので摺動筒１７には第３図
左方へ後退させる方向の推力が働く。そして始動
スイツチを切ると、始動モータ１への通電が断た
れるので駆動軸１３の駆動が停止する。同時に電
磁作動機構２８への通電も断たれるので、プラン
ジヤ３２が戻しばね３３の弾発力で第４図左方へ
摺動し、これにより揺動アーム２７が、その係合
爪２５が摺動筒１７の係合溝２４と係合しない位
置まで反時計方向に揺動し、またロツク環４３が
同様に反時計方向に回動してその各逃がし溝４４
と各ロツクボール４１が合致し各ロツクボール４
１がロツク溝４２から外れる。即ち、早期離脱防
止機構３８が解除されるので、摺動筒１７がヘリ
カルスプラインs1，s2を介しそれの基端端面が大
径部１０と中径部１１間の段部に衝合する位置ま
で後退し、その間にピニオン２２がリングギヤ２
１より離脱する。 After the engine starts, the sliding tube 17 is rotated at high speed by the ring gear 21, and the return spring 47
Since the sliding cylinder 17 is receiving an elastic force, a thrust force is applied to the sliding cylinder 17 in the direction of retreating it to the left in FIG. Then, when the starting switch is turned off, the power to the starting motor 1 is cut off, so that the driving of the drive shaft 13 is stopped. At the same time, the power to the electromagnetic actuating mechanism 28 is cut off, so the plunger 32 slides to the left in FIG. The lock ring 43 pivots counterclockwise to a position where it does not engage with the engagement groove 24 of the movable barrel 17, and the lock ring 43 similarly pivots counterclockwise to close its relief grooves 44.
and each lock ball 41 match, and each lock ball 4
1 comes off from the lock groove 42. That is, since the early detachment prevention mechanism 38 is released, the proximal end surface of the sliding tube 17 abuts against the step between the large diameter section 10 and the medium diameter section 11 via the helical splines s 1 and s 2 . position, during which the pinion 22 is connected to the ring gear 2.
Leave from 1.
以上のように本発明によれば、ハウジングに、
始動モータにより回転駆動される駆動軸を回転可
能に支承させると共に駆動軸にヘリカルスプライ
ンを介して螺合される摺動筒を回転および摺動可
能に支承させ、摺動筒の先端にエンジンのリング
ギヤと噛合し得るピニオンを設けハウジングと摺
動筒との間に、ピニオンがリングギヤに噛合した
とき作動して、摺動筒を前進限に保持し、ピニオ
ンの早期離脱を防止する早期離脱防止機構を設け
たものにおいて、摺動筒に形成されたロツク溝
と、ハウジングに突設され、摺動筒を遊挿させた
筒部と、筒部のボール挿入孔に保持され、摺動筒
の前進限でロツク溝に落込み得るロツクボール
と、筒部外周に回転可能に配設され、ロツクボー
ルがロツク溝に落込んだとき回転してボール挿入
孔を閉塞し、ロツクボールのロツク溝からの外れ
止めをなすロツク環とより前記早期離脱防止機構
を構成したので、エンジン始動時におけるピニオ
ンとリングギヤとの噛合をロツク溝と、それに落
込んだロツクボールと、そのロツクボールの外れ
止めをなすロツク環との協働により確実に保持す
ることができる。またロツク環をピニオンの中心
線回りに回転させて早期離脱防止機構の作動およ
び解除を行うので、装置の上記中心線方向の長さ
を短縮してその小型化を達成することができる。 As described above, according to the present invention, the housing includes
A drive shaft that is rotationally driven by a starter motor is rotatably supported, and a sliding tube that is threaded onto the drive shaft via a helical spline is rotatably and slidably supported, and the ring gear of the engine is attached to the tip of the sliding tube. A pinion that can mesh with the ring gear is provided between the housing and the sliding tube, and an early release prevention mechanism is provided between the housing and the sliding tube that operates when the pinion meshes with the ring gear to hold the sliding tube at the forward limit and prevent the pinion from leaving early. In this case, a lock groove formed in the sliding tube, a cylindrical portion protruding from the housing into which the sliding tube is loosely inserted, and a ball held in the ball insertion hole of the cylindrical portion to limit the forward movement of the sliding tube. A lock ball that can fall into the lock groove with a lock ball, and a lock ball that is rotatably arranged on the outer periphery of the cylindrical part, and when the lock ball falls into the lock groove, it rotates to close the ball insertion hole and prevent the lock ball from coming off from the lock groove. Since the early disengagement prevention mechanism is constituted by the lock ring, the engagement between the pinion and the ring gear when starting the engine is achieved by the cooperation of the lock groove, the lock ball that falls into the lock ball, and the lock ring that prevents the lock ball from coming off. Can be held securely. Further, since the lock ring is rotated around the centerline of the pinion to activate and release the early release prevention mechanism, the length of the device in the direction of the centerline can be shortened, thereby achieving miniaturization.
図面は本発明の一実施例を示すもので、第１図
は作動前の縦断側面図、第２図は第１図−線
断面図、第３図は作動中の縦断側面図、第４図は
第３図−線断面図である。
Ｈ……ハウジング、s1，s2……ヘリカルスプラ
イン、１……始動モータ、１３……駆動軸、１７
……摺動筒、２１……リングギヤ、２２……ピニ
オン、３８……早期離脱防止機構、３９……筒
部、４０……ボール挿入孔、４１……ロツクボー
ル、４２……ロツク溝、４３……ロツク環。
The drawings show one embodiment of the present invention, and FIG. 1 is a vertical sectional side view before operation, FIG. 2 is a sectional view taken along the line of FIG. is a sectional view taken along the line in FIG. H...housing, s1 , s2 ...helical spline, 1...starting motor, 13...drive shaft, 17
...Sliding tube, 21...Ring gear, 22...Pinion, 38...Early release prevention mechanism, 39...Cylinder part, 40...Ball insertion hole, 41...Lock ball, 42...Lock groove, 43... ...Lock ring.
Claims (1)
れる駆動軸を回転可能に支承させると共に前記駆
動軸にヘリカルスプラインを介して螺合される摺
動筒を回転および摺動可能に支承させ、前記摺動
筒の先端にエンジンのリングギヤと噛合し得るピ
ニオンを設け、前記ハウジングと前記摺動筒との
間に、前記ピニオンが前記リングギヤに噛合した
とき作動して、前記摺動筒を前進限に保持し前記
ピニオンの早期離脱を防止する早期離脱防止機構
を設けたものにおいて、前記摺動筒に形成された
ロツク溝と、前記ハウジングに突設され、前記摺
動筒を遊挿させた筒部と、該筒部のボール挿入孔
に保持され、前記摺動筒の前進限で前記ロツク溝
に落込み得るロツクボールと、前記筒部外周に回
転可能に配設され、前記ロツクボールが前記ロツ
ク溝に落込んだとき回転して前記ボール挿入孔を
閉塞し、該ロツクボールの該ロツク溝からの外れ
止めをなすロツク環とより前記早期離脱防止機構
を構成した、慣性摺動式始動装置。1. A housing rotatably supports a drive shaft rotationally driven by a starter motor, and also rotatably and slidably supports a sliding tube that is threaded onto the drive shaft via a helical spline, and the sliding tube A pinion capable of meshing with the ring gear of the engine is provided at the tip of the housing, and is actuated when the pinion meshes with the ring gear to hold the sliding cylinder at the forward limit. A locking groove formed in the sliding tube, a cylindrical portion protruding from the housing into which the sliding tube is loosely inserted, and a locking groove formed in the sliding tube, and a cylindrical portion protruding from the housing into which the sliding tube is loosely inserted. A lock ball is held in a ball insertion hole of a cylindrical part and can fall into the lock groove at the forward limit of the sliding cylinder; The inertial sliding type starting device comprises a lock ring which rotates when the lock ring rotates to close the ball insertion hole and prevent the lock ball from coming off from the lock groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12784182A JPS5918262A (en) | 1982-07-22 | 1982-07-22 | Inertia sliding starting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12784182A JPS5918262A (en) | 1982-07-22 | 1982-07-22 | Inertia sliding starting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5918262A JPS5918262A (en) | 1984-01-30 |
| JPH0119066B2 true JPH0119066B2 (en) | 1989-04-10 |
Family
ID=14969985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12784182A Granted JPS5918262A (en) | 1982-07-22 | 1982-07-22 | Inertia sliding starting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5918262A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7810403B2 (en) | 2006-05-04 | 2010-10-12 | Conntechnical Industries, Inc. | Starter motor having a permanently engaged gear |
| WO2007131080A2 (en) * | 2006-05-04 | 2007-11-15 | Conntechnical Industries, Inc. | Starter motor having a permanently engaged gear |
-
1982
- 1982-07-22 JP JP12784182A patent/JPS5918262A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5918262A (en) | 1984-01-30 |
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