US3741187A - Engine starter mechanism - Google Patents

Engine starter mechanism Download PDF

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Publication number
US3741187A
US3741187A US00250041A US3741187DA US3741187A US 3741187 A US3741187 A US 3741187A US 00250041 A US00250041 A US 00250041A US 3741187D A US3741187D A US 3741187DA US 3741187 A US3741187 A US 3741187A
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United States
Prior art keywords
shaft
pinion
starter
push rod
accordance
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 - Lifetime
Application number
US00250041A
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English (en)
Inventor
B Niebur
T Peters
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.)
Outboard Marine Corp
Original Assignee
Outboard Marine Corp
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Filing date
Publication date
Application filed by Outboard Marine Corp filed Critical Outboard Marine Corp
Application granted granted Critical
Publication of US3741187A publication Critical patent/US3741187A/en
Anticipated expiration legal-status Critical
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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
    • F02N1/00—Starting apparatus having hand cranks
    • F02N1/005—Safety means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/13—Machine starters
    • Y10T74/131—Automatic

Definitions

  • ABSTRACT Disclosed herein is a marine propulsion device comprising an engine starter including a rotatably mounted shaft and a pinion carried by the shaft for movement relative to the shaft and relative to an engaged position in mesh with an engine starting gear, and cooperating, selectively operable means on the shaft and pinion for displacing the starter pinion to the engaged position in response to shaft rotation and for preventing movement of the starter pinion to the engaged position, notwithstanding shaft rotation.
  • a linkage connecting the selectively operable means to a transmission shiftable between a neutral condition and a drive condition and operable to selectively operate the cooperating means on the shaft and the pinion for displacing the starter pinion to the engaged position and for preventing movement of the starter pinion to the engaged position.
  • the invention relates generally to starter mechanisms for internal combustion engines, such as are included in marine propulsion devices having reversing transmissions.
  • a marine propulsion device which includes an engine starting gear, a reversing transmission, and a starter mechanism including a rotatable starter shaft and a starter pinion carried on the starting shaft for movement relative to the starter shaft and to an engaged position in mesh with the starting gear, together with selectively operable, cooperating means on the starter shaft and on the starter pinion for displacing the starter pinion to the engaged position in response to rotation of the starter shaft and for preventing movement of the starter pinion to the engaged position, notwithstanding rotation of the starter shaft.
  • the reversing transmission is shiftable between a neutral condition and a drive condition and there is included means connecting the transmission to the selectively operable, cooperating means on the starter shaft and on the starter pinion for displacing the starter pinion to the engaged position in response to starter shaft rotation when the transmission is in neutral condition and for preventing displacement of the pinion to the engaged position when the transmission is in drive condition.
  • the preferred embodiment of the invention includes control of the operation of the starter mechanism in accordance with the condition of the reversing transmission, it is within the scope of the invention to provide a control for the starter mechanism independently of the reversing transmission.
  • the means for displacing the starter pinion to the engaged position and for preventing movement of the starter pinion to the engaged position includes provision on one of the starter shaft and starter pinion of a drive pin and provision in the other of the starter shaft and starter pinion ofa slot which receives the drive pin and which includes a portion extending axially of the starter shaft axis, and a portion extending in inclined relation to the starter shaft axis.
  • one preferred embodiment of the invention includes employment of a starter shaft including an axial bore, together with a linkage operable in the bore to displace the starter pinion relative to the starter shaft so as to selectively locate the drive pin in either the axial or inclined slot portions.
  • the linkage includes a push rod movable axially in the starter shaft bore between a first or upper position 10- cating the starter pinion such that the drive pin is located in the axially extending slot portion and a second or lower position in which the drive pin is located in the inclined slot portion.
  • the linkage further includes means connecting the push rod to the starter pinion so as to afford starter pinion movement in accordance with movement of the push rod, together with means for displacing the push rod in the bore of the starter shaft.
  • such means comprises a second push rod which is located in the starter shaft bore in engagement with the first push rod to afford axial displacement of the first push rod in response to axial displacement of the second push rod while permitting rotational movement therebetween, together with means for displacing the second push rod axially of the starter shaft bore.
  • the means for displacing the second push rod axially of the starter shaft bore comprises a pivotally mounted control shaft and a link pivotally connected between the second push rod and the control shaft so as to displace the second push rod within the starter shaft bore in re sponse to rocking of the control shaft.
  • control shaft comprises a control shaft for the reversing transmission and the components are arranged such that the push rods are displaced to locate the drive pin in the axially extending slot portion of the starter pinion to prevent starter pinion movement to the position engaging the starting gear whenever the reversing transmission is shifted to a drive condition.
  • the linkage is such that when the reversing transmission is located, by reason of movement of the control shaft, in the neutral condition, the second or lower push rod is so positioned so as to permit the first or upper push rod and the starter pinion to fall to a position in which the drive pin is located in the inclined slot portion so as to thereby afford advancement of the starter pinion to the position in meshing engagement with the starting gear in responseto rotation of the starter shaft in the proper direction.
  • the invention also provides a starter mechanism which is adapted to be operatively connected to an engine and which includes various of the features already mentioned.
  • One of the principal objects of the invention is the provision of a starter mechanism including selectively operable, cooperating means on a starter shaft and on a starter pinion carried on the starter shaft for relative movement therebetween, which cooperating means is selectively operable to displace the starter pinion to a position in meshed engagement with a starting engine gear in response to rotation of the starter shaft in one direction and for preventing such movement in response to such starter shaft rotation.
  • Another of the principal objects of the invention is the provision of a starter mechanism of the type referred to in the preceding paragraph, which starter mechanism is controlled so as to permit movement of a starter pinion to a position engaged with an engine starting gear and to prevent such movement in response to the condition of a reversing transmission.
  • Still another of the principal objects of the invention is the provision of a marine propulsion device including a starter mechanism which is operable to initiate engine starting only when the reversing transmissionis in new tral, and which includes various of the features already mentioned.
  • another of the principal objects of the invention is to afford starting operation of a starter mechanism when a reversing transmission is in neutral and to prevent starting operation of a starter mechanism when the reversing transmission is in a drive condition by means operable within a bore provided in a starter shaft.
  • FIG. 1 is a side elevational view of an outboard motor embodying various of the features of the invention.
  • FIG. 2 is an enlarged view of a portion of a mechanism shown in FIG. 1.
  • FIG. 3 is a'fragmentary elevational view of various of the components of the mechanism shown in FIG. 3 with the pinion shown in its intermediate position.
  • FIG. 4 is a fragmentary elevational view of various of the components of the mechanism shown in FIG. 2 with the pinion shown in its locked-out position.
  • FIG. Si is a fragmentary, partially broken away, top view of the mechanism shown in FIG. 2.
  • a marine propulsion device which embodies various of the features of the invention, which can take various forms and which, in the illustrated construction, is in the form of an outboard motor 11.
  • a propulsion unit 13 comprising a powerhead l7 and a lower unit 21.
  • the powerhead 17 includes an engine block 23 including a starting or flywheel gear 27 and a starter or starter mechanism 29 mounted on the engine block 23 and adapted to be actuated so as to engage the starting gear 2 and rotate the engine to initiate operation.
  • the lower unit 21 includes a portion which is normally under water, which rotatably supports a propeller 31, and which includes a clutch or reversing transmission 33 shiftable between a neutral condition and each of a forward drive and a rearward drive condition.
  • the transmission 33 is operated by a control rod 37 which extends vertically in the lower unit 21, which is operatively connected at its lower end to the reversing transmission 33, and which, at its upper end, emerges in proximity to the engine block 23.
  • the control rod 37 is pivotally connected to the outer end of a lever 39 mounted on one portion of a suitably rotatablY supported shift control shaft 41 which, at one end, extends exteriorly of a powerhead cover 43 and is adapted to be operated, i.e., rocked so as to actuate the transmission 33, either manually or by remote means connected thereto.
  • the starter mechanism 29 includes a mounting bracket 47 which is connected to the engine block 23 and which includes a vertically extending bore 49 carrying a starter drive shaft 51. Carried by the starter drive shaft 51 for rotary and axial movement relative thereto, is a starter pinion 53 which, in accordance with the invention, is movable between a first or engaged or advanced position in mesh with the starting gear 27, a second or partially advanced or intermediate position (See FIG. 3) below the engaged position and out of engagement with the starting gear 27, and a third or retracted or lock-out position (See FIG. 4) which is located below the intermediate position.
  • Means are provided for rotating the starter shaft 51 to enable displacement of the starter pinion 53 to its engaged position from its intermediate position and, when the starter pinion 53 is engaged with the starting gear 27, for initiating engine operation.
  • Such means comprises connection of the lower end of the starting shaft 51 to a pulley 57 which, in turn, has anchored thereto a pull rope (not shown).
  • the upper end of the starter shaft 51 is fixedly connected to a recoil spring 59 which is housed in a recess 61 in the mounting bracket 47 and has its other end anchored to the mounting bracket 47.
  • a recoil spring 59 which is housed in a recess 61 in the mounting bracket 47 and has its other end anchored to the mounting bracket 47.
  • cooperating selectively operable means on the shaft 51 and on the pinion 53 are provided for preventing movement of the starter pinion 53 from the retracted position (See FIG. 4) to the engaged position when the starter pinion is in the retracted position, notwithstanding rotation of the starter shaft 51 in the counterclockwise direction, and when the starter pinion 53 is in the intermediate position, for effecting movement of the starter pinion 53 from the intermediate position (See FIG. 3) to the engaged position in response to rotation of the starter shaft in the counterclockwise direction.
  • such means comprises formation of the starter pinion 53 with a hub 69 having diametrically opposed slots 71 which are respectively located on opposite sides of the hub 69 and which respectively include an axially extending lock-out portion 73 and an axially inclined and circumferentially extending portion 77 extending from the lower or bottom end of the axially extending portion 73, together with a drive pin 79 which extends fixedly and diametrically from the starter shaft 51 and has opposite ends received in the slots 71.
  • a single slot together with a drive pin having a single end received in the slot is within the scope of the invention, as well as location of the slot in the shaft and employment of a pin extending from the pinion into the slot in the shaft.
  • the slots 71 and drive pin 79 are arranged such that, when the starter pinion 53 is located in the beforementioned fully retracted or lock-out position (See FIG. 4), the drive pin 79 is located at the upper end of the axially extending slot portions 73 and rotation of the starter shaft 51 will cause common rotation of the starter pinion 53 therewith in both rotative directions, but will be ineffective to advance the starter pinion 53 toward the engaged position.
  • Rotation of the starter shaft 51 in the counterclockwise direction causes advancement of the starter pinion 53 from the intermediate position (See FIG. 3) to the engaged position due to cooperating assistance from a drag spring 81 which includes a circular portion 83 engaged in an angular groove on the starter pinion 53 and which further includes an extending portion 87 which engages a suitable ear or stop 89 extending from the mounting bracket 47.
  • a drag spring 81 which includes a circular portion 83 engaged in an angular groove on the starter pinion 53 and which further includes an extending portion 87 which engages a suitable ear or stop 89 extending from the mounting bracket 47.
  • a linkage or means 89 is connected to the just described selectively operable means to afford selective operation thereof.
  • the starter shaft 51 is hollow or includes a bore 90 and there is provided in the hollow interior or bore 90 an upper push rod 91 which is movable between upper and lower positions and means for connecting the push rod 91 to the starter pinion 53 to afford starter pinion movement in accordance with push rod movement.
  • such means includes a lift pin 93 extending fixedly from the upper push rod 91 through diametrically opposite axially extending openings 97 in the starter shaft 51 and into engagement with the under surface of the starter pinion 53.
  • the starter pinion 53 When the upper push rod 91 is in its lower position, the starter pinion 53 is free to automatically fall or descend on the starter shaft 51, under the influend of gravity, from the intermediate or engaged positions to the retracted or lock-out position (See FIG. 4) with the lower face of the starter pinion 53 engaged with the lift pin 93, to thereby locate the drive pin 79 at the upper end of the axially extending slot portion 73.
  • the drive pin 79 is in the axially extending slot portion 73, rotation of the starter shaft 51 will result only in common rotation of the starter pinion 53, without any advancement of the starter pinion 53 toward the position in engagement with the starting or flywheel gear 27.
  • the push rod lift pin 93 When the upper push rod 91 is in its upper, raised or elevated position, the push rod lift pin 93 will support the starter pinion 53 in its intermediate position. Similarly displacement of the upper push rod 91 from its lower to its upper positions will raise the starter pinion 53 from its retracted or lock-out position to its intermediate position.
  • the means for effecting selective operation further includes means for displacing the upper push rod 91 within the hollow interior of the starter shaft 51 from the lower position to the upper position so as to locate the starter pinion 53 in the intermediate position with the drive pin 79 at the top end of the inclined slot portion 77 and for permitting the upper push rod 91 to fall, under the influence of gravity, from its upper position to its lower position, and thereby to also permit the starter pinion 53 to fall from its intermediate position to its retracted or lock-out position.
  • the lower end of the hollow interior of the starter shaft 51 is open and there is received therein a second or lower push rod 121 which, at its upper end, engages the bottom of the upper push rod 91 so as to control the position thereof while permitting rotation of the upper push rod 91 with the starter shaft 51 relative to the lower push rod 121.
  • the lower push rod 121 is pivotally connected, about an axis transverse to the axis of the starter shaft 51, to an arcuately extending connecting link 123 which, in turn and at its lower end, is pivotally connected to a lever 127 extending fixedly from the pivotally mounted shift control shaft 41.
  • the components are so arranged so that when the shift control shaft 41 is in its neutral position, the lower push rod 121 is located in its most elevated position within the starter shaft 51, thereby raising the upper push rod 91 to its upper position, which, in turn, raises the starter pinion 53 on the starter shaft 51 to the intermediate or partially advanced position with the drive pin 79 located in the upper end of the inclined slot portion 77. Accordingly, with the components in the just described position, rotation of the starter shaft 51 in the counterclockwise direction will cause advancement of the starter pinion 53 from the intermediate or partially advanced position to the fully advanced or engaged position to effect engine starting operation. It is to be especially noted that engine starting operation is permitted when the shift control shaft 41 is in the neutral position.
  • the linkage 89 serves to lower or partially withdraw the lower push rod 121, thereby permitting the lowering of the upper push rod 91 under the action of gravity to its lower position and simultaneously to afford lowering of the starter pinion 53 to the fully lowered or retracted lock-out position.
  • the drive pin 79 is located at the upper end of the axially extending slot portion 73 to thereby prevent starter pinion movement from the retracted toward the engaged position. Accordingly, whenever the shift control shaft 41 is rocked from its neutral position, the starter pinion 53 is permitted to fall to its lock-out position so as to prevent engine starting operation of the starter mechanism 29.
  • a marine propulsion device comprising an engine having a starting gear, a starter including a rotatable starter shaft and a pinion carried on said shaft for movement relative to said shaft and to an engaged position in mesh with said starting gear, and selectively operable cooperating means on said shaft and on said pinion for displacing said pinion to said engaged position in response to rotation of said shaft and for preventing movement of said pinion to said engaged position notwithstanding rotation of said shaft.
  • a marine propulsion device in accordance with claim 1 wherein said means for displacing said pinion to said engaged position and for preventing pinion movement to said engaged position includes a drive pin on one of said shaft and said pinion and a slot in the other of said shaft and said pinion, said slot receiving said drive pin and including a portion extending axially of the axis of said shaft and a portion extending in inclined relation to the axis of said shaft.
  • a marine propulsion device in accordance with claim 2 wherein said shaft includes an axial bore therein and a linkage operable in said bore to displace said pinion relative to said shaft so as to selectively locate said drive pin in the axial and inclined slot portions.
  • a marine propulsion device in accordance with claim 4 wherein said means for displacing said push rod comprises a second push rod in said shaft bore in engagement with said first mentioned push rod, and means for displacing said second push rod axially of said shaft bore.
  • a marine propulsion device in accordance with claim 5 wherein said means for displacing said second push rod comprises a pivotally mounted control shaft and a link pivotally connecting said second push rod to said control shaft.
  • a marine propulsion device comprising an engine having a starting gear, a transmission shiftable between a neutral condition and a drive condition, a starter including a rotatable starter shaft and a pinion carried on said starter shaft for axial and rotative movement relative to said starter shaft, selectively operable means on said starter shaft and on said pinion for displacing said pinion relative to an engaged position in mesh with said starting gear in response to rotation of said starter shaft and for preventing movement of said pinion to said engaged position notwithstanding rotation of said shaft, and means connecting said transmission to said selectively operable means on said starter shaft and on said pinion for operating said selective means to displace said pinion to said engaged position in response to starter shaft rotation when said transmission is in neutral condition and for operating said selective means to prevent displacment of said pinion to said engaged position in response to starter shaft rotation when said transmission is in drive condition.
  • a marine propulsion device in accordance with claim 8 wherein said means for displacing said pinion to said engaged position and for preventing pinion movement to said engaged position includes a drive pin on one of said shaft and said pinion and a slot in the other of said shaft and said pinion, said slot receiving said drive pin and including a portion extending axially of the axis of said shaft and a portion extending in inclined relation to the axis of said shaft.
  • a marine propulsion device in accordance with claim 9 wherein said shaft includes an axial bore therein and a linkage operable in said bore to displace said pinion relative to said shaft so as to selectively locate said drive pin in the axial and inclined slot portions.
  • a marine propulsion device in accordance with claim 11 wherein said means for displacing said push rod comprises a second push rod in said shaft bore and means for displacing said second push rod axially of said shaft bore.
  • a marine propulsion device in accordance with claim 12 wherein said means for displacing said second push rod comprises a pivotally mounted control shaft anda link pivotally connecting said second push rod to said control shaft.
  • An engine starter including a rotatable starter shaft and a pinion carried on said shaft for movement relative to said shaft and relative to a position adapted for meshing engagement of said pinion with an engine starting gear when in said position, and a drive pin on one of said shaft and said pinion and a slot in the other of said shaft and said pinion and receiving said drive pin, said slot including a portion extending axially of the axis of said shaft and a portion extending in inclined relation to the axis of said shaft, whereby, when said drive pin is in said axially extending slot portion, said pinion is prevented from moving to said position and when said drive pin is in said inclined slot portion, said pinion is displaced to said position in response to rotation of said shaft.
  • said linkage includes a push rod movable axially in said shaft bore and means connecting said push rod to said pinion to afford pinion movement in accordance with movement of said push rod.

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  • 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)
US00250041A 1972-05-03 1972-05-03 Engine starter mechanism Expired - Lifetime US3741187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25004172A 1972-05-03 1972-05-03

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US3741187A true US3741187A (en) 1973-06-26

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US00250041A Expired - Lifetime US3741187A (en) 1972-05-03 1972-05-03 Engine starter mechanism

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US (1) US3741187A (fr)
JP (1) JPS5926515B2 (fr)
CA (1) CA974130A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866591A (en) * 1973-05-31 1975-02-18 Outboard Marine Corp Manual starter and shift interlock mechanism
US3906921A (en) * 1974-08-05 1975-09-23 Toro Co Lawn mower starting interlock
US3942505A (en) * 1974-08-05 1976-03-09 The Toro Company Lawn mower starting interlock
US20040161983A1 (en) * 2003-02-13 2004-08-19 Neisen Gerald F. Watertight flywheel housing for boats using a stern drive system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5928034B2 (ja) * 1975-05-24 1984-07-10 株式会社リケン 発熱体を埋設した耐火物製造方法
JPS5836157Y2 (ja) * 1975-05-24 1983-08-15 株式会社リケン 発熱体を埋設する耐火物
JPS551052A (en) * 1978-06-20 1980-01-07 Goto & Co Ltd Electric heater of corodierite as main content
JPS60246582A (ja) * 1984-05-21 1985-12-06 佐藤　宏 複合構造電気抵抗発熱器及びその製造方法
CN106143855B (zh) * 2016-07-29 2017-12-22 李良晶 一种舷外机启动器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250240A (en) * 1961-11-24 1966-05-10 Outboard Marine Corp Starting motor power take off

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866591A (en) * 1973-05-31 1975-02-18 Outboard Marine Corp Manual starter and shift interlock mechanism
US3906921A (en) * 1974-08-05 1975-09-23 Toro Co Lawn mower starting interlock
US3942505A (en) * 1974-08-05 1976-03-09 The Toro Company Lawn mower starting interlock
US20040161983A1 (en) * 2003-02-13 2004-08-19 Neisen Gerald F. Watertight flywheel housing for boats using a stern drive system

Also Published As

Publication number Publication date
JPS4942096A (fr) 1974-04-20
JPS5926515B2 (ja) 1984-06-28
CA974130A (en) 1975-09-09

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