US3399576A - Starting mechanism for internal combustion engines - Google Patents

Starting mechanism for internal combustion engines Download PDF

Info

Publication number
US3399576A
US3399576A US585618A US58561866A US3399576A US 3399576 A US3399576 A US 3399576A US 585618 A US585618 A US 585618A US 58561866 A US58561866 A US 58561866A US 3399576 A US3399576 A US 3399576A
Authority
US
United States
Prior art keywords
shaft
clutch
starting mechanism
armature
engagement
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
US585618A
Other languages
English (en)
Inventor
Seilly Alec Harry
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.)
CAV Ltd
Original Assignee
CAV Ltd
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 CAV Ltd filed Critical CAV Ltd
Application granted granted Critical
Publication of US3399576A publication Critical patent/US3399576A/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
    • F02N15/066—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement the starter being of the coaxial type
    • 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

  • a starting mechanism for an internal combustion engine and the mechanism comprising an electric motor incluoing a rotor, a shaft extending through the rotor and pro jecting beyond one end thereof the projecting portion of the shaft having an axially movable pinion operatively connected thereto.
  • the mechanism also including a device for moving the pinion axially to an operative position in which it engages with a toothed wheel of the engine and there also being provided a one way clutch which ispositioned within the rotor and which acts to transmit driving torque between the rotor and the shaft.
  • This invention relates to starting mechanism for internal combustion engines and has for its object to provide such a mechanism in a simple and convenient form.
  • a starting mechanism in accordance with the invention comprises in combination, a motor, a shaft arranged to be driven by the motor, an axially movable pinion operatively connected to the shaft, a device for moving the pinion axially to an operative position in which it is engaged with the toothed wheel of an engine, and a one way clutch disposed intermediate the shaft and the motor, the arrangement being such that in'the event of the pinion being maintained in its operative position when the engine has started the clutch will act to prevent the motor being driven by the engine.
  • FIGURE 1 is a sectional side elevation of one example of a starting mechanism in accordance with the invention.
  • FIGURE 2 is a section on the line 22 of FIGURE 1,
  • FIGURE 3 is a sectional side elevation of part of a modification of the mechanism shown in FIGURE 1,
  • FIGURE 4 is a sectional side elevation of part of another modification of the mechanism shown in FIGURE 1
  • FIGURE 5 is a sectional side elevation of a modification of the mechanism of FIGURE 3.
  • FIGURE 1 of the drawings there is pro vided a rotor armature 1 having an extended axial shaft 2.
  • a non-magnetic sleeve 3 having secured thereto a pinion 4.
  • the pinion and shaft are inter-connected by a quick pitch screw thread 8 whereby when the shaft is rotated in one direction relative to the pinion the latter will be moved axially away from the armature 1 into mesh with teeth formed on the periphery of a flywheel 5 of the associated engine against the action of a compression spring 6 located between the pinion and an abutment 7 on the end of the shaft.
  • the sleeve 3 is surrounded by an axially slidable hollow cylindrical iron Patented Sept. 3, 1968 an annular step 10a on the sleeve so as to permit limited relative axial movement of the core and sleeve.
  • an axially slidable collar 12 which is loaded by a compression spring 13 and serves to move a plurality of catch balls 14 into engagement with an annular shoulder 15 in the shaft 2 for securing the sleeve to the shaft when the pinion 4 is moved into engagement with the teeth on the flywheel 5 of the engine so preventing inadvertent return of the sleeve to its rest position before the engine has been fully started.
  • annular electrically insulating disc 16 Adjacent the end of the solenoid nearest the armature is an annular electrically insulating disc 16 which carries a pair of fixed contacts 17, 18 forming part of two electric switches respectively.
  • the moving contacts 19, 20 of the switches are carried by a substantially rectangular titltable member 21 located about a hollow member 22 mounted on the core 9 and loaded against a flange on the shoulder by a coiled compression spring 23 of helically coiled conical form.
  • a further compression spring 9b is interposed between the housing and the core 9 to urge the core towards the armature.
  • a tongue piece 24 At one angular'position on the member 21 there is provided a tongue piece 24 and extending from the disc 16 towards the armature at substantially the same angular position as the tongue piece 24 is a support 25 having pivotally mounted thereon a catch 26 in the form of a bell crank lever. On one arm of the catch is a projection 27 to engage over the tongue piece in the manner of a hook.
  • the catch is loaded into engagement with the tongue piece by means of a spring 29 surrounding the pivot 25 one end of the spring bearing on the other arm of the catch and the other end of the spring bearing on the end of the core.
  • a spring 29 surrounding the pivot 25 one end of the spring bearing on the other arm of the catch and the other end of the spring bearing on the end of the core.
  • an annular catch release plate 30 mounted on the end of the sleeve nearest the armature is an annular catch release plate 30 provided to co-operate with the other arm of the catch when the sleeve moves away from the armature as during the starting sequence.
  • a one way clutch 40 which is accommodated within the armature and which serves as a driving connection between the rotor and the shaft 2.
  • the clutch illustrated in section in FIGURES 2 is a clutch of the roller type and includes an inner member 41 of plain hollow cylindrical form which is keyed or otherwise non-rotatably engaged with the shaft 2.
  • the outer member of the clutch is secured to the rotor and formed in the internal periphery thereof are a plurality of tapering recesses in which are located rollers 42 respectively the latter being located within a cage. The operation of this type of clutch is well known.
  • the core 9 and all the parts mounted thereon move axially away from the armature.
  • the shoulder 9a on the core abuts against the step 3a on the sleeve the sleeve is urged :by the core axially away from the armature against the action of the spring 6 and effects the initial engagement of the pinion 2 with the teeth of the flywheel 5.
  • the tongue 24 on the member 21 abuts against the projection 27 on the catch and the member is tilted against the action of the spring 23, allowing the contacts 17 and 19 to close and permitting the rotor to be energised through a resistance (not shown).
  • the catch balls 14 will move into position against the shoulders 15 to retain the sleeve relative to the shaft. Moreover, the collar will move relatively to the shaft and the balls will be retained positively in this position by the plain portion of the collar.
  • the catch release plate moves the catch 26 angularly to release the tongue 24 and allow the contacts 18, 20 to close. Closure of the contacts 18, 20 short circuits the resistance and full power is developed by the motor to rotate the flywheel.
  • the switch in the solenoid circuit After the engine has been set in rotation the switch in the solenoid circuit is re-opened the core first moves the collar to unlock the catch balls 14 whereafter the various parts are restored to their initial position by the screw connection between the shaft and the sleeve.
  • the clutch 40 is of the multiplate type but the remaining parts of the mechanism are identical to those described above.
  • the clutch 40 comprises an inner member of hollow cylindrical form.
  • a quick pitch thread which is engaged with a complementarily shaped thread formed on the periphery of the shaft 2.
  • member 50 On the external periphery of the, member 50 is formed a plurality of axially extending splines and also an outwardly extending flange 51.
  • Engaged with the splines are a plurality of driven annular clutch plates 52.
  • annular driving clutch plates 53 Interposed between driven clutch plates are annular driving clutch plates 53 which are in engagement with splines formed on the internal periphery of an outer clutch member 54, the latter being nonrotatably connected to the armature.
  • the end plate of the pack of clutch plates remote from the flange 51 is a driving plate and bearing upon this plate is a coiled compression spring 54a surrounding the shaft and having its end remote from the pack located within an annular groove formed in the outer clutch member.
  • the member 50 can move in opposite directions relative to the shaft the extent of movement of the member being limited by stops 55 and 56 formed on the outer clutch member and a flanged cylindrical member 57 which freely surrounds the shaft but which is nonrotatably engaged with the outer clutch member 54.
  • the member 57 is urged against a step on the shaft and interposed between the flange of the member and the flange 51 is a coiled compression spring 58.
  • the spring 58 maintains the clutch plates in light frictional engagement and when the armature starts to rotate rotary motion is imparted to the shaft by way of the clutch plates and the quick pitch thread, when the pinion is fully engaged the action of the quick pitch thread between the shaft and the member 50 is to load the clutch plates and to compress the spring 54a.
  • the clutch transmits the torque from the armature which is required to start the engine.
  • the extent of compression of the spring 54a is limited by the abutment of the member 50 with the stop 55 and if the member is in contact with the stop and the torque required to rotate the engine increases then the clutch will slip to prevent damage to the mechanism.
  • FIGURE 5 The arrangement shown in FIGURE 5 is substantially the same to that shown in FIGURE 3 with the exception that the spring 54a is omitted and also the stop 55.
  • the effect of this is that the member 50 moves axially to compress the clutch plates to a degree such that whatever torque is required to be transmitted by the clutch is transmitted. In other words the clutch does not limit the torque which can be transmitted between the motor and the shaft.
  • FIGURE 4 there is shown a further arrangement of the clutch 40 and in this case a ratchet clutch is provided.
  • the clutch comprises a driven member 60 which is in quick pitch screw thread engagement with the shaft 2 and a driving member 61 which is in axially extending spline engagement with the internal periphery of a hollow cylindrical part 61a driven by the armature 1.
  • the presented faces of the members 60 and 61 are provided with interengaging ratchet teeth 62 and a coiled compression spring 63 is provided to load the teeth into driving engagement.
  • a resilient cushion 64 is provided intermediate the driving member 61 and a radially extending face formed on the cylindrical part 61a.
  • a starting mechanism for internal combustion engines comprising in combination, an electric motor including a rotor, a shaft extending through the rotor and projecting beyond one end thereof, an axially movable pinion operatively connected to the projecting end of the shaft, a device for moving the pinion axially to an operative position in which it is engaged with a toothed wheel of an engine, and a one way clutch serving to transmit driving torque from the rotor to the shaft said clutch being positioned within the rotor so that the projecting portion of the shaft together with a portion of the shaft lying within the rotor is available to absorb shock loads resulting from the engagement of the pinion and toothed wheel, the clutch acting to prevent the rotor being driven by the engine.
  • a starting mechanism as claimed in claim 3 including means for urging the teeth into engagement when the motor is driving the shaft and for moving the teeth out of engagement when the shaft tends to drive the motor.
  • a starting mechanism as claimed in claim 4 in which said means comprises a quick pitch thread formed on the shaft and a complementary thread formed on one of said members.
  • a starting mechanism in claim 5 in which resilient means is provided to urge the teeth into engagement.
  • a starting mechanism as claimed in claim 7 in which said means comprises a quick pitch screw thread formed on the shaft and a complementary thread formed on a part surrounding the shaft to support one set of plates of the clutch.

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)
  • Mechanical Operated Clutches (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
US585618A 1965-10-22 1966-10-10 Starting mechanism for internal combustion engines Expired - Lifetime US3399576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB44764/65A GB1147193A (en) 1965-10-22 1965-10-22 Starting mechanism for internal combustion engines

Publications (1)

Publication Number Publication Date
US3399576A true US3399576A (en) 1968-09-03

Family

ID=10434647

Family Applications (1)

Application Number Title Priority Date Filing Date
US585618A Expired - Lifetime US3399576A (en) 1965-10-22 1966-10-10 Starting mechanism for internal combustion engines

Country Status (4)

Country Link
US (1) US3399576A (OSRAM)
JP (1) JPS4834009B1 (OSRAM)
DE (1) DE1476452B1 (OSRAM)
GB (1) GB1147193A (OSRAM)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714450A (en) * 1971-04-19 1973-01-30 Gen Motors Corp Starting mechanism
US3866960A (en) * 1974-02-04 1975-02-18 Gen Motors Corp Internal combustion engine cranking motor energizing circuit
US4104926A (en) * 1975-08-21 1978-08-08 Ronald Wilson Starter motors
US4260903A (en) * 1977-11-18 1981-04-07 Societe De Paris Et Du Rohne Locking devices for electric starter actuators
US4308462A (en) * 1980-01-17 1981-12-29 Ambac Industries, Incorporated Engine starter system with improved structure for maintaining engine engagement
US4423645A (en) 1981-06-10 1984-01-03 Varco International, Inc. Pipe spinner
US4488054A (en) * 1982-04-13 1984-12-11 Hitachi, Ltd. Starter apparatus
US4502429A (en) * 1981-10-09 1985-03-05 Hitachi, Ltd. Inertia drive type starter for internal combustion engine
US4574213A (en) * 1983-04-21 1986-03-04 Teledyne Industries, Inc. Bearing support and seal for a starter motor housing
DE3809684A1 (de) * 1987-03-18 1988-09-29 Mitsubishi Electric Corp Starter fuer eine maschine
US5839318A (en) * 1995-05-29 1998-11-24 Mitsuba Corporation Coaxial engine starter system
US5895993A (en) * 1995-12-19 1999-04-20 Denso Corporation Starter with improved pinion drive and return structure
US6157105A (en) * 1999-05-27 2000-12-05 Mitsubishi Denki Kabushiki Kaisha Starter
US20130167686A1 (en) * 2011-10-07 2013-07-04 Denso Corporation Starter
DE102015215782A1 (de) 2014-09-11 2016-03-17 Schaeffler Technologies AG & Co. KG Rutschkupplungsbaugruppe

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1384689A (en) * 1971-02-19 1975-02-19 Lucas Industries Ltd Starter motors
WO1988005864A1 (en) * 1987-02-05 1988-08-11 Mitsubishi Denki Kabushiki Kaisha Engine starter
JPS63209448A (ja) * 1987-02-23 1988-08-31 Mitsubishi Electric Corp エンジン用スタ−タ装置
KR930000475B1 (ko) * 1988-09-21 1993-01-21 미쯔비시 덴끼 가부시끼가이샤 시동 전동기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1939405A (en) * 1931-03-18 1933-12-12 Eclipse Aviat Corp Starting mechanism
US2333765A (en) * 1941-04-10 1943-11-09 Scintilla Ltd Starting device for internal combustion engines
US2727158A (en) * 1953-07-28 1955-12-13 Cav Ltd Electric engine-starting motor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH111446A (de) * 1923-11-09 1925-08-17 Bosch Robert Ag Anlasselektromotor für Verbrennungskraftmaschinen.
US2425946A (en) * 1945-07-30 1947-08-19 Lee Abe Starting device for internalcombustion engines
DE1078813B (de) * 1956-07-27 1960-03-31 Siemens Schuckertwerke Gmbh Schubschraubtrieb fuer elektrische Andrehmotoren von Brennkraftmaschinen
DE1805907U (de) * 1959-07-13 1960-02-11 Garbe Lahmeyer & Co Ag Anlassvorrichtung fuer brennkraftmaschinen.
GB955181A (en) * 1961-04-24 1964-04-15 Cav Ltd Electric starting mechanism for internal combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1939405A (en) * 1931-03-18 1933-12-12 Eclipse Aviat Corp Starting mechanism
US2333765A (en) * 1941-04-10 1943-11-09 Scintilla Ltd Starting device for internal combustion engines
US2727158A (en) * 1953-07-28 1955-12-13 Cav Ltd Electric engine-starting motor

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714450A (en) * 1971-04-19 1973-01-30 Gen Motors Corp Starting mechanism
US3866960A (en) * 1974-02-04 1975-02-18 Gen Motors Corp Internal combustion engine cranking motor energizing circuit
US4104926A (en) * 1975-08-21 1978-08-08 Ronald Wilson Starter motors
US4260903A (en) * 1977-11-18 1981-04-07 Societe De Paris Et Du Rohne Locking devices for electric starter actuators
US4308462A (en) * 1980-01-17 1981-12-29 Ambac Industries, Incorporated Engine starter system with improved structure for maintaining engine engagement
US4423645A (en) 1981-06-10 1984-01-03 Varco International, Inc. Pipe spinner
US4502429A (en) * 1981-10-09 1985-03-05 Hitachi, Ltd. Inertia drive type starter for internal combustion engine
US4488054A (en) * 1982-04-13 1984-12-11 Hitachi, Ltd. Starter apparatus
US4574213A (en) * 1983-04-21 1986-03-04 Teledyne Industries, Inc. Bearing support and seal for a starter motor housing
DE3809684A1 (de) * 1987-03-18 1988-09-29 Mitsubishi Electric Corp Starter fuer eine maschine
US5839318A (en) * 1995-05-29 1998-11-24 Mitsuba Corporation Coaxial engine starter system
US5895993A (en) * 1995-12-19 1999-04-20 Denso Corporation Starter with improved pinion drive and return structure
US6157105A (en) * 1999-05-27 2000-12-05 Mitsubishi Denki Kabushiki Kaisha Starter
US20130167686A1 (en) * 2011-10-07 2013-07-04 Denso Corporation Starter
US9062646B2 (en) * 2011-10-07 2015-06-23 Denso Corporation Starter
DE102015215782A1 (de) 2014-09-11 2016-03-17 Schaeffler Technologies AG & Co. KG Rutschkupplungsbaugruppe
US9803699B2 (en) 2014-09-11 2017-10-31 Schaeffler Technologies AG & Co. KG Slip clutch assembly

Also Published As

Publication number Publication date
DE1476452B1 (de) 1970-12-17
JPS4834009B1 (OSRAM) 1973-10-18
GB1147193A (en) 1969-04-02

Similar Documents

Publication Publication Date Title
US3399576A (en) Starting mechanism for internal combustion engines
US2902125A (en) Engine starting apparatus
US2554445A (en) Engine starter gearing
US3465353A (en) Starter drive with selectively-releasable friction advance mechanism
US2224935A (en) Starting motor drive
US2447007A (en) Clutch device
US3572133A (en) Starter drive with positive advance and inertia release
US2904148A (en) Clutch for an engine starting device
US3399575A (en) Starting mechanisms for internal combustion engines
US3299719A (en) Starter drive for internal combustion engine
US2644338A (en) Engine starter gearing
US2101606A (en) Engine starter
US1848361A (en) Engine starting mechanism
US1511492A (en) Flywheel dynamo-electric machine for internal-combustion engines
US2900970A (en) Single lever control for engine starting mechanism
US2934656A (en) Electric engine-starting motors
US2900057A (en) Clutch for engine starting device
US2494960A (en) Motor-generator-starter drive unit
US1364853A (en) Engine-starter
US1950296A (en) Driving mechanism for engine starters
US2209459A (en) Overrunning clutch
US2900058A (en) Clutch for engine starting device
US2203338A (en) Starter for engines
US2450129A (en) Engine starter gearing
US2919001A (en) Centrifugally controlled overrunning transmission