US3209603A - Starter motors - Google Patents

Starter motors Download PDF

Info

Publication number
US3209603A
US3209603A US166476A US16647662A US3209603A US 3209603 A US3209603 A US 3209603A US 166476 A US166476 A US 166476A US 16647662 A US16647662 A US 16647662A US 3209603 A US3209603 A US 3209603A
Authority
US
United States
Prior art keywords
pinion
shaft
armature
motor
starter motors
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
US166476A
Inventor
Rodriguez German Garcia
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.)
Robert Bosch SA
Original Assignee
Fabrica Espanola de Magnetos SA FEMSA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fabrica Espanola de Magnetos SA FEMSA filed Critical Fabrica Espanola de Magnetos SA FEMSA
Priority to US166476A priority Critical patent/US3209603A/en
Application granted granted Critical
Publication of US3209603A publication Critical patent/US3209603A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • Y10T74/132—Separate power mesher

Definitions

  • the invention relates to improvements in starter motors whereby the starting characteristics of large motors are obtained, but with very small dimensions, a weight lower than that of existing motors and a cost which is also more economic.
  • this starter motor reside in that between the armature of the starter motor and the driving pinion there is interposed a reduction gear train which reduces the speed of rotation and thereby increases the starting torque of the driving pinion, in such manner that, starting from an electric motor, the torque of which is substantially small, its dimensions being therefore extremely reduced, it is possible with this reduction system of gears to reduce the revolutions of the driving pinion and increase the starting torque sufficiently to make it possible to start the most powerful diesel engine.
  • the reference 1 designates the contactor or electromagnet which, while it is causing the complete pinion 2 to advance by means of the fork 3, bridges the battery terminal and the motor terminal, causing the battery current to flow directly to the induction coils 4.
  • the movement of advance of the pinion is synchronised with the closing of the circuit in such manner that it prevents the flow of current to the motor until the pinion is in mesh with the engine of the vehicle, thus preventing in this way any strong shock on engagement and also any excessive wear of the faces of the pinion teeth.
  • the complete pinion 2 is of the free wheel type and consists of a pinion 5, a supporting shaft 6 in which there are formed inclined surfaces the slope of which is produced in the direction of rotation of the motor, rollers 7, a spiral spring 8 and a collar 9.
  • the planetary gear shaft 10 carries three planet gears 17 and is supported in two sintered sleeves and mounted in the support 11 at the driving end.
  • a ring 12 is the intermediate adjusting member between the driving-end support 11 and the casing or frame.
  • An armature 13 is provided with a shaft at the end of which there are teeth which mesh with the planet gears.
  • the toothed end of the armature shaft is in other words, the sun gear of a 3,209,603 Patented Oct. 5, 1965 ice planetary gear set.
  • the reference 14 designates the frame or casing and the reference 15 the support at the collector end.
  • the dished plate 16 serves as a means for retaining the grease in the planetary gear housing.
  • rollers 7 bind 0n the inclined surfaces of the supporting shaft 6 when a movement is imparted in the direction of rotation of the armature, rendering the supporting shaft and the driving pinion fast with one another, and, consequently, the torque developed by the armature is transmitted to the teeth of the driving pinion and in this way achieves the starting of the internal combustion engine of the vehicle.
  • the helicoidal surfaces 10' of the shaft 10 which mesh with the inner surfaces of the shaft 6, facilitate the movement of the pinion 5 in and out of engagement with the ring gear of the vehicle (not shown).
  • the fork 3 moves the pinion 5 from its withdrawn position to -a position in which it is lightly meshing with the ring gear. The rest of the movement is accomplished by the helicoidal surfaces.
  • the speed of the ring gear of the engine is greater than the speed of the armature of the starter motor and at this moment the free wheel system operates.
  • the rollers 7, which were binding on the inclined surf-aces of the supporting shaft 6, are disengaged and the rotary movement of the ring gear of the internal combustion engine is rendered independent of that of the armature, so that the driving pinion rotates at the speed of the ring gear and the supporting shaft at the speed of the armature, a receding movement of the rollers consequently occurring, said rollers becoming disengaged and preventing dangerous overspeed of all the rotating parts of the starter motor.
  • the return movement of the pinion 5 is effected essentially by the fork 3 through recovery springs 3' and 3" with the help of the helicoidal surfaces.
  • the assembly formed in this way offers the advantages of a small, very fast motor of relatively great power.
  • a starter motor com-prising an electromagnetic device, a fork actuated by said electromagnetic device, a return spring connected with said fork, a shaft having inclined surfaces, a collar connected with said shaft and said fork, rollers engaging said shaft, an engine-starting pinion having surfaces adapted to engage said rollers, a spring engaging said collar and said pinion, an armature operatively connected with said electromagnetic device and having a shaft with teeth thereon, said teeth constituting a sun gear, a plurality of planet gears meshing with said gun gear, a fixed ring gear in meshing engagement with the planet gears, another shaft, and means drivingly connecting said other shaft with said planet gears, the lastmentioned shaft slidably supporting said pinion and having helicoidal surfaces meshing with the inclined surfaces of the first-mentioned shaft.

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)

Description

06L 1955 s. G. RODRIGUEZ 3,209,603
STARTER MOTORS Filed Jan. 12, 1962 INVENTOR GERMAN GARCIA RODRIGUEZ ATTORNEYS United States Patent 3,209,603 STARTER MOTORS German Garcia Rodriguez, Madrid, Spain, assignor to gabrica Espanola Magnetos S.A. (Femsa), Madrid,
pain
Filed Jan. 12, 1962, Ser. No. 166,476 1 Claim. (Cl. 74-7) Starter motors in existence at the present time require a very large torque for starting diesel and petrol internal combustion engines and this is achieved with very considerable dimensions and weight and at a very considerable cost.
It is known that the power of an electric motor divided by the speed is proportional to the dimensions of the motor. That is to say, with a very fast small motor it is possible to achieve a relatively high power.
The invention relates to improvements in starter motors whereby the starting characteristics of large motors are obtained, but with very small dimensions, a weight lower than that of existing motors and a cost which is also more economic.
The main characteristics of this starter motor reside in that between the armature of the starter motor and the driving pinion there is interposed a reduction gear train which reduces the speed of rotation and thereby increases the starting torque of the driving pinion, in such manner that, starting from an electric motor, the torque of which is substantially small, its dimensions being therefore extremely reduced, it is possible with this reduction system of gears to reduce the revolutions of the driving pinion and increase the starting torque sufficiently to make it possible to start the most powerful diesel engine.
In order to detail clearly the special features of these improvements in starter motors which are the object of this invention, reference is made to the accompanying drawing showing a cross-section of one type of starter motors, the ditferent forms and dimensions which may be adopted not being shown in detail since this is independent of the object of the invention.
In the drawing, the reference 1 designates the contactor or electromagnet which, while it is causing the complete pinion 2 to advance by means of the fork 3, bridges the battery terminal and the motor terminal, causing the battery current to flow directly to the induction coils 4. The movement of advance of the pinion is synchronised with the closing of the circuit in such manner that it prevents the flow of current to the motor until the pinion is in mesh with the engine of the vehicle, thus preventing in this way any strong shock on engagement and also any excessive wear of the faces of the pinion teeth.
The complete pinion 2 is of the free wheel type and consists of a pinion 5, a supporting shaft 6 in which there are formed inclined surfaces the slope of which is produced in the direction of rotation of the motor, rollers 7, a spiral spring 8 and a collar 9.
The planetary gear shaft 10 carries three planet gears 17 and is supported in two sintered sleeves and mounted in the support 11 at the driving end. A ring 12 is the intermediate adjusting member between the driving-end support 11 and the casing or frame. An armature 13 is provided with a shaft at the end of which there are teeth which mesh with the planet gears. The toothed end of the armature shaft is in other words, the sun gear of a 3,209,603 Patented Oct. 5, 1965 ice planetary gear set. The reference 14 designates the frame or casing and the reference 15 the support at the collector end. The dished plate 16 serves as a means for retaining the grease in the planetary gear housing.
The operation of the entire driving pinion assembly takes place as described hereinafter.
The above-described rollers 7 bind 0n the inclined surfaces of the supporting shaft 6 when a movement is imparted in the direction of rotation of the armature, rendering the suporting shaft and the driving pinion fast with one another, and, consequently, the torque developed by the armature is transmitted to the teeth of the driving pinion and in this way achieves the starting of the internal combustion engine of the vehicle. The helicoidal surfaces 10' of the shaft 10 which mesh with the inner surfaces of the shaft 6, facilitate the movement of the pinion 5 in and out of engagement with the ring gear of the vehicle (not shown). Actually, the fork 3 moves the pinion 5 from its withdrawn position to -a position in which it is lightly meshing with the ring gear. The rest of the movement is accomplished by the helicoidal surfaces.
Once the internal combustion engine has started, the speed of the ring gear of the engine is greater than the speed of the armature of the starter motor and at this moment the free wheel system operates. The rollers 7, which were binding on the inclined surf-aces of the supporting shaft 6, are disengaged and the rotary movement of the ring gear of the internal combustion engine is rendered independent of that of the armature, so that the driving pinion rotates at the speed of the ring gear and the supporting shaft at the speed of the armature, a receding movement of the rollers consequently occurring, said rollers becoming disengaged and preventing dangerous overspeed of all the rotating parts of the starter motor. The return movement of the pinion 5 is effected essentially by the fork 3 through recovery springs 3' and 3" with the help of the helicoidal surfaces.
As has been explained above, the assembly formed in this way offers the advantages of a small, very fast motor of relatively great power.
The nature of the invention and the manner of carrying the same into effect in practice having been sufliciently described, it is pointed out that the arrangements indicated above are open to modifications of detail, without the fundamental principle of the invention being thereby altered, that which constitutes the essence of the same being characterised by the following claims.
What I claim is:
A starter motor, com-prising an electromagnetic device, a fork actuated by said electromagnetic device, a return spring connected with said fork, a shaft having inclined surfaces, a collar connected with said shaft and said fork, rollers engaging said shaft, an engine-starting pinion having surfaces adapted to engage said rollers, a spring engaging said collar and said pinion, an armature operatively connected with said electromagnetic device and having a shaft with teeth thereon, said teeth constituting a sun gear, a plurality of planet gears meshing with said gun gear, a fixed ring gear in meshing engagement with the planet gears, another shaft, and means drivingly connecting said other shaft with said planet gears, the lastmentioned shaft slidably supporting said pinion and having helicoidal surfaces meshing with the inclined surfaces of the first-mentioned shaft.
(References on following page) References Cited by the Examiner UNITED STATES PATENTS Zimmerman.
Hardman. 5 Lansing et a1 747 Allen 74-7 Callsen et a1. 747
Nardone 747 4 2,354,844 8/44 Thornburg. 2,923,162 2/ 60 Rainey 747 3,057,212 10/62 Hoven 747 FOREIGN PATENTS 348,966 5/31 Great Britain.
BROUGHTON G. DURHAM, Primary Examiner.
DON A. WAITE, Examiner.
US166476A 1962-01-12 1962-01-12 Starter motors Expired - Lifetime US3209603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US166476A US3209603A (en) 1962-01-12 1962-01-12 Starter motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US166476A US3209603A (en) 1962-01-12 1962-01-12 Starter motors

Publications (1)

Publication Number Publication Date
US3209603A true US3209603A (en) 1965-10-05

Family

ID=22603462

Family Applications (1)

Application Number Title Priority Date Filing Date
US166476A Expired - Lifetime US3209603A (en) 1962-01-12 1962-01-12 Starter motors

Country Status (1)

Country Link
US (1) US3209603A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356735A (en) * 1980-03-06 1982-11-02 Robert Bosch Gmbh Starting mechanism for internal combustion engines
US4412457A (en) * 1981-04-29 1983-11-01 General Motors Corporation In-line engine cranking motor drive having reduction gear set
US4454437A (en) * 1981-10-30 1984-06-12 Mitsubishi Denki Kabushiki Kaisha Stator frame and housing for venticular starting motor with reduction gears
US4503719A (en) * 1981-10-09 1985-03-12 Mitsubishi Denki Kabushiki Kaisha Buffering mechanism for automotive starter
US4519261A (en) * 1981-11-17 1985-05-28 Mitsubishi Denki Kabushiki Kaisha Starting motor with planetary gear reduction gears
DE3440388A1 (en) * 1983-11-30 1985-06-05 Société de Paris et du Rhône, Lyon, Rhône ELECTRIC STARTER FOR COMBUSTION ENGINES
US4573364A (en) * 1984-08-15 1986-03-04 General Motors Corporation Gear reduction starter drive
US4604907A (en) * 1983-11-07 1986-08-12 Mitsubishi Denki Kabushiki Kaisha Reduction gear device for a coaxial type starter
US4671125A (en) * 1984-09-25 1987-06-09 Mitsubishi Denki Kabushiki Kaisha Engine starter with a planetary reduction gear
DE3705034A1 (en) * 1986-02-17 1987-08-20 Mitsubishi Electric Corp LEVER GUIDE PINION IN A STARTER ENGINE
US4831895A (en) * 1981-11-07 1989-05-23 Mitsubishi Denki Kabushiki Kaisha Starting motor
US5045737A (en) * 1989-06-30 1991-09-03 Mitsubishi Denki Kabushiki Kaisha Starter motor
US20130147207A1 (en) * 2010-07-27 2013-06-13 Jean-Sébastien Metral Starter motor with drive assembly fitted with a coupling system for coupling a pinion mounted freely on its rotor shaft, and associated method
US20170226775A1 (en) * 2014-10-17 2017-08-10 Euchner Gmbh + Co. Kg Device for Locking or Releasing a Safety-Relevant, Movable Component in a Controlled Manner

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1290472A (en) * 1915-03-04 1919-01-07 Us Light & Heat Corp Starter for engines.
US1556988A (en) * 1919-07-28 1925-10-13 Dayton Eng Lab Co Connecting mechanism
GB348966A (en) * 1930-02-27 1931-05-21 Royce Frederick Henry Improvements in turning gear for starting internal combustion engines
US1931459A (en) * 1931-11-25 1933-10-17 Eclipse Aviat Corp Starting mechanism
US2150594A (en) * 1935-06-18 1939-03-14 Eclipse Aviat Corp Engine starting apparatus
US2151463A (en) * 1936-03-27 1939-03-21 Bosch Gmbh Robert Starting arrangement for internal combustion engines
US2203795A (en) * 1940-06-11 nardone
US2354844A (en) * 1942-01-09 1944-08-01 Gen Motors Corp Engine starter
US2923162A (en) * 1956-03-19 1960-02-02 Ford Motor Co Motor vehicle starter holding means
US3057212A (en) * 1959-07-13 1962-10-09 Garbe Lahmeyer & Co Ag Starter clutch

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203795A (en) * 1940-06-11 nardone
US1290472A (en) * 1915-03-04 1919-01-07 Us Light & Heat Corp Starter for engines.
US1556988A (en) * 1919-07-28 1925-10-13 Dayton Eng Lab Co Connecting mechanism
GB348966A (en) * 1930-02-27 1931-05-21 Royce Frederick Henry Improvements in turning gear for starting internal combustion engines
US1931459A (en) * 1931-11-25 1933-10-17 Eclipse Aviat Corp Starting mechanism
US2150594A (en) * 1935-06-18 1939-03-14 Eclipse Aviat Corp Engine starting apparatus
US2151463A (en) * 1936-03-27 1939-03-21 Bosch Gmbh Robert Starting arrangement for internal combustion engines
US2354844A (en) * 1942-01-09 1944-08-01 Gen Motors Corp Engine starter
US2923162A (en) * 1956-03-19 1960-02-02 Ford Motor Co Motor vehicle starter holding means
US3057212A (en) * 1959-07-13 1962-10-09 Garbe Lahmeyer & Co Ag Starter clutch

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356735A (en) * 1980-03-06 1982-11-02 Robert Bosch Gmbh Starting mechanism for internal combustion engines
US4412457A (en) * 1981-04-29 1983-11-01 General Motors Corporation In-line engine cranking motor drive having reduction gear set
US4503719A (en) * 1981-10-09 1985-03-12 Mitsubishi Denki Kabushiki Kaisha Buffering mechanism for automotive starter
US4454437A (en) * 1981-10-30 1984-06-12 Mitsubishi Denki Kabushiki Kaisha Stator frame and housing for venticular starting motor with reduction gears
US4831895A (en) * 1981-11-07 1989-05-23 Mitsubishi Denki Kabushiki Kaisha Starting motor
US4519261A (en) * 1981-11-17 1985-05-28 Mitsubishi Denki Kabushiki Kaisha Starting motor with planetary gear reduction gears
US4604907A (en) * 1983-11-07 1986-08-12 Mitsubishi Denki Kabushiki Kaisha Reduction gear device for a coaxial type starter
US4649285A (en) * 1983-11-30 1987-03-10 Societe Paris-Rhone Electric starter incorporating a base plate supporting the carcase of its electric motor and the yoke of its contactor
DE3440388A1 (en) * 1983-11-30 1985-06-05 Société de Paris et du Rhône, Lyon, Rhône ELECTRIC STARTER FOR COMBUSTION ENGINES
US4573364A (en) * 1984-08-15 1986-03-04 General Motors Corporation Gear reduction starter drive
US4671125A (en) * 1984-09-25 1987-06-09 Mitsubishi Denki Kabushiki Kaisha Engine starter with a planetary reduction gear
DE3705034A1 (en) * 1986-02-17 1987-08-20 Mitsubishi Electric Corp LEVER GUIDE PINION IN A STARTER ENGINE
US5045737A (en) * 1989-06-30 1991-09-03 Mitsubishi Denki Kabushiki Kaisha Starter motor
US20130147207A1 (en) * 2010-07-27 2013-06-13 Jean-Sébastien Metral Starter motor with drive assembly fitted with a coupling system for coupling a pinion mounted freely on its rotor shaft, and associated method
US9765744B2 (en) * 2010-07-27 2017-09-19 Valeo Equipements Electriques Moteur Starter motor with drive assembly fitted with a coupling system for coupling a pinion mounted freely on its rotor shaft, and associated method
US20170226775A1 (en) * 2014-10-17 2017-08-10 Euchner Gmbh + Co. Kg Device for Locking or Releasing a Safety-Relevant, Movable Component in a Controlled Manner

Similar Documents

Publication Publication Date Title
US3209603A (en) Starter motors
US4366385A (en) Engine starter drive
GB1232346A (en)
US4464576A (en) Engine starter drive
US3210554A (en) Electric starter mechanism for internal combustion engines
ES459150A1 (en) Shifting device for internal combustion engine starter
SU776572A3 (en) Starter for starting internal combustion engine
US3176525A (en) Starter mechanism for reversible engine
EP2472100B1 (en) An engine startup device
US2256466A (en) Starting mechanism for internal combustion engines
US3578981A (en) Engine starter control circuits
US2538300A (en) Engine starter gearing
US1868346A (en) Engaging and driving mechanism for rotary parts
US1563992A (en) Engine-starting mechanism
US2811044A (en) Starter gearing for internal combustion engines
US2140083A (en) Engine starting apparatus
US2880628A (en) Transmission gear for a combined device
US1960213A (en) Engine starter
US3280811A (en) Starting mechanism for internal combustion engines
US1505998A (en) Engine starter
US1737802A (en) Engine starter
US1589459A (en) Motor drive
USRE23359E (en) Engine stabtee drive
US2771780A (en) Starting devices for combustion engines
US1248549A (en) Engine-starter.