US3788150A - Inertia sliding type internal combustion engine starter - Google Patents

Inertia sliding type internal combustion engine starter Download PDF

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Publication number
US3788150A
US3788150A US00293000A US3788150DA US3788150A US 3788150 A US3788150 A US 3788150A US 00293000 A US00293000 A US 00293000A US 3788150D A US3788150D A US 3788150DA US 3788150 A US3788150 A US 3788150A
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United States
Prior art keywords
pinion
driven plate
plate
internal combustion
rotary shaft
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Expired - Lifetime
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US00293000A
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English (en)
Inventor
T Matsumoto
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
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Publication of US3788150A publication Critical patent/US3788150A/en
Anticipated expiration legal-status Critical
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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
    • F02N15/062—Starter drives
    • F02N15/063—Starter drives with resilient shock absorbers
    • 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 An inertia sliding type internal combustion engine starter having a rotary shaft upon which is located a driving plate, the two elements being intere'ngaged via helical splines. A second plate is driven by the first plate, the second driven plate also interengaging a pinion via ratchet gear teeth. Rotation of the rotary shaft rotates and translates the various components to their starter position, the pinion engaging an engine ring gear to attain starting. If starting is incomplete, the in- 9 ertia of the elements maintain such in-their starter positions thus preventing the phenomenon of earlier retreat.
  • the present invention relates generally to an engine starter of the Bendix type, wherein a pinion is caused to slide by the inertia of the pinion itself to interlock with an engine ring gear, and more particularly, it relates to an improved engine starter wherein return of the pinion after an incomplete starting period, such as often occurs in such structure, is prevented.
  • a conventional type premature retum-preventing device is disclosed in Japanese Patent Publication No. 9921 1965 and Japanese Utility Model Publication No. 2409/1966, 'wherein a groove is formed at the crest of a helical spline in the outer periphery of a screw sleeve and a return-stopper mounted to a pinion which is spline-fitted to the outer periphery of the sleeve is fitted to the groove at the time interlocking the pinion to the ring gear in order to prevent a premature return thereof.
  • the return-stopper usually was pressed on the outer periphery of the sleeve by a spring.
  • the stopper is slidably moved on the spline of the periphery of the sleeve. Accordingly, the friction experienced is quite severe and movement of the pinion has not been speedy because of the sliding friction, whereby starting of the engine has been disturbed.
  • centrifugal stopper mechanism comprising a stopper and a spring detecting thenumber of rotations by centrifugal force has been fitted to the member directly contributing to interlock the ring gear of the direct engine with the pinion and the sleeve.
  • Another object of the present invention is to provide an engine starter wherein a ratchet assembly is provided between the pinion and .the driving assembly so that the structure is quite simple, the operation is accurate, and the reliability of the starter is improved.
  • -Still another object of the present invention is to provide an engine starter which is easy to manufacture due to its design which facilitates easy processing and assembly, and which will greatly reduce such costs of systems manufacture.
  • Yet another object of the present invention is to provide an engine starter which will prevent the phenomenon of earlier retreat by means which will not interfere with the starting procedure and which will render such procedure more accurate.
  • an engine starter having a rotary shaft with a helical spline upon its peripheral surface, and a driving plate mounted upon the rotary shaft having a mating helical spline.
  • a driven plate and pinion are also provided, the driven plate and driving plate being interconnected by a flanged projection and groove assemblies, while the driven plate and pinion are interconnected via ratchet gear teeth.
  • FIG. 1 is a partial sectional view of an engine starter constructed in accordance with this invention, at the commencement'of the starting operation; 7
  • FIG. 2 is a sectional view of an engine starter as illustrated in FIG. 1, taken along the line IIII of FIG. I;
  • FIG. 3 is a partial sectional vi'ew of an engine starter as illustrated in FIG. 1, illustrating the cooperative parts during operation of the device.
  • a rotary shaft 1 of the starting motor which is not shown in the drawings, has a-male helical spline 2 formed upon its outer peripheral surface, while an annular driving plate 3 has, upon its inner peripheral surface, a female helicalspline 4 for mating with the helical spline 2, and radially extending projections 5 for transmitting and transforming rotary motion into translative motion, in conjunction with splines 2 and 4, as will be apparent hereinafter.
  • Buffers 6, which may be made of an elastomer, such as, for example, rubber, are provided for buffering propulsion forces whichare generated during'the engine startingperiod, and are disposed between projections 5 and an annular driven plate 7, being held in such location and in a preliminarily compressed state by caulked portions 9 of plate 7 which abut or overlap plate 3.
  • Driven plate 7 is in turn provided with a plurality of grooves or recesses 8 for receiving projections 5 of driving plate 3, whereby the rotary movement impressed upon driving plate 3 by rotary shaft 1 is enabled to be transmitted to driven plate 7.
  • ratchet gear teeth 10 which may be formed by various metal operations, such asfor example, pressing.
  • An annular pinion 11, for driving the engine is likewise provided with ratchet gear teeth 12 for interlocking engagement with the teeth 10, both sets of teeth being formed upon oppositely disposed side surfaces or faces of their respective members. It is noted that both sets of teeth 10 and 12 are formed so as to enable the transmission of the rotary movement in one direction only, i.e., from plate 7 to pinion ll.
  • a retaining ring 16 locks stopper 15 in a pre-determined position relative to shaft 1, while a conventional engine ring gear 17 is provided for engagement with starter pinion ll.
  • the engine starter switch not shown in the drawing, is closed in order to feed power to the starter motor. Consequently, when the rotary shaft 1 is rotated, the driving plate 3, the buffers 6, the driven plate 7, and the pinion 11 are all interengaged via splines 2 and 4, projections 5, and gear teeth and 12, and all have zero kinetic energy as each element was initially at rest. Hence, the teeth 10 and '12 of the ratchet assembly will be impulsively connected at their edge surfaces, while the driven plate 7 will similarly be suddenlyimpressed by an impulsive force due to the impulsive connection with driving plate 3 via projections 5.
  • the impulsive force will be buffered by the buffers 6, whereby the impulsive force transmitted to the pinion 11 from plate 7, via teeth 10 and 12, will be diminished somewhat, or at least is not as great as it would be in the absence of buffers 6.
  • the condition of such impulsive connection of the teeth 10 and 12 is subsequently changed and relaxed or diminished a short time after the rotary shaft 1 has been rotated by the starting motor, such condition permitting the pinion 11 to be subsequently easily interlocked with the ring gear 17.
  • Such occurs upon further rotation of shaft 1 which, in association with 1 splines 2 and 4, causes driving plate 3, with its interlocked driven plate 7 and pinion 11 to be translated along shaft 1 from its position disclosed in FIG. 1 to that disclosed in FIG. 3.
  • H6 the operative condition of the starter is disclosed, wherein the rotary driving effect of the rotary shaft 1 forces driving plate 3 to rotate and translate along shaft 1 per splines 2 and 4 so as to compress coil spring 14 and the buffers 6, whereby the deflection of I1 is attained and the load upon the motor is lightened.
  • inertia force is substantially greater than the return force present, it is consequently seen that the presence of such inertia prevents the abovementioned earlier retreat phenomenon from occurring, whereby the engine is in a position for being accurately started per a subsequent attempt by the starter mechanism.
  • the engine starter of the present invention has important advantages over the known prior art structures in that the phenomenon of earlier retreat is prevented, yet such is accomplished by means which do not interfere with the starter operation, the means utilized thereby facilitating accurate starter operation.
  • An inertia sliding type internal combustion engine starter comprising:
  • a driving plate connected to said rotary shaft via helical splines
  • a driven plate connected to said driving plate so as to be translated in an axial direction
  • said energy storage means constructed to provide a biasing force insufficient to overcome said predetermined inertia.
  • ratchet comprises a first set of ratchet teeth formed upon the side surface of the driven plate facing said pinion, and a second set of ratchet teeth formedupon the side surface of said pinion facing said driven plate, so as to interlock with said first set of ratchet teeth.
  • said energy storage means comprises a coil spring po-' sitioned about said rotary shaft.

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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)
US00293000A 1972-01-25 1972-09-28 Inertia sliding type internal combustion engine starter Expired - Lifetime US3788150A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972010567U JPS5144021Y2 (en)) 1972-01-25 1972-01-25

Publications (1)

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US3788150A true US3788150A (en) 1974-01-29

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US00293000A Expired - Lifetime US3788150A (en) 1972-01-25 1972-09-28 Inertia sliding type internal combustion engine starter

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JP (1) JPS5144021Y2 (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622643A1 (fr) * 1987-11-02 1989-05-05 Mitsubishi Electric Corp Moyen d'arret d'un pignon d'un demarreur de moteur
US5046373A (en) * 1989-08-07 1991-09-10 Briggs & Stratton Corp. Starter motor construction
US20080314195A1 (en) * 2007-06-21 2008-12-25 Denso Corporation Starter for engines
US20120085306A1 (en) * 2010-10-09 2012-04-12 Chu jun-jie Starter motor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1330567A (en) * 1920-02-10 Motor
US2455328A (en) * 1947-09-02 1948-11-30 Bendix Aviat Corp Engine starter gearing and control
US2569267A (en) * 1950-06-09 1951-09-25 Bendix Aviat Corp Engine starter gearing
US3071013A (en) * 1960-01-25 1963-01-01 Gen Motors Corp Starting apparatus
US3176525A (en) * 1959-11-16 1965-04-06 Kiekhaefer Corp Starter mechanism for reversible engine
US3630092A (en) * 1969-01-23 1971-12-28 Mitsubishi Electric Corp Starter for internal-combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200250A1 (de) * 1972-01-04 1973-07-19 Bosch Gmbh Robert Andrehvorrichtung fuer brennkraftmaschinen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1330567A (en) * 1920-02-10 Motor
US2455328A (en) * 1947-09-02 1948-11-30 Bendix Aviat Corp Engine starter gearing and control
US2569267A (en) * 1950-06-09 1951-09-25 Bendix Aviat Corp Engine starter gearing
US3176525A (en) * 1959-11-16 1965-04-06 Kiekhaefer Corp Starter mechanism for reversible engine
US3071013A (en) * 1960-01-25 1963-01-01 Gen Motors Corp Starting apparatus
US3630092A (en) * 1969-01-23 1971-12-28 Mitsubishi Electric Corp Starter for internal-combustion engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622643A1 (fr) * 1987-11-02 1989-05-05 Mitsubishi Electric Corp Moyen d'arret d'un pignon d'un demarreur de moteur
US5046373A (en) * 1989-08-07 1991-09-10 Briggs & Stratton Corp. Starter motor construction
US20080314195A1 (en) * 2007-06-21 2008-12-25 Denso Corporation Starter for engines
US20120085306A1 (en) * 2010-10-09 2012-04-12 Chu jun-jie Starter motor
US9004035B2 (en) * 2010-10-09 2015-04-14 Johnson Electric S.A. Starter motor

Also Published As

Publication number Publication date
JPS5144021Y2 (en)) 1976-10-26
JPS4886227U (en)) 1973-10-19

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