US3782219A - Friction lock for outboard motor throttle hand grip - Google Patents

Friction lock for outboard motor throttle hand grip Download PDF

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Publication number
US3782219A
US3782219A US00246339A US3782219DA US3782219A US 3782219 A US3782219 A US 3782219A US 00246339 A US00246339 A US 00246339A US 3782219D A US3782219D A US 3782219DA US 3782219 A US3782219 A US 3782219A
Authority
US
United States
Prior art keywords
hand grip
grip
steering arm
outboard motor
throttle
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
US00246339A
Other languages
English (en)
Inventor
R Beck
W Heikkinen
R Johnson
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.)
Brunswick Corp
Original Assignee
Brunswick Corp
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 Brunswick Corp filed Critical Brunswick Corp
Application granted granted Critical
Publication of US3782219A publication Critical patent/US3782219A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/12—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in an indefinite number of positions, e.g. by a toothed quadrant
    • G05G5/26—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in an indefinite number of positions, e.g. by a toothed quadrant by other means than a quadrant, rod, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/21—Control means for engine or transmission, specially adapted for use on marine vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
    • 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
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents
    • Y10T74/2066—Friction

Definitions

  • ABSTRACT is a friction lock which operates upon a throttle hand grip mounted on the steering arm of an outboard motor.
  • An end cap threaded axially with respect to the steering arm urges the hand grip against the shoulder on the steering arm, thereby creating friction to hold the throttle grip in a selected position.
  • twisting hand grip throttle controls have a tendency to creep away from a selected setting when the drivers hand is removed from the hand grip. Many are biased to return to the slow speed position when released. This is particularly irritating in those instances where a constant speed is desired, for example, when trolling or running at full power. At the same time, it is undesirable to positively lock a throttle in a set position in such a manner that it cannot be readily adjusted in case of emergency.
  • the invention comprises a cylindrical handle piece adapted to rotate freely upon a cylindrical portion of the steering arm for the outboard motor.
  • An end cap threaded axially thereto with respect to the steering arm, adjustably abuts the outer end of said hand piece urging it onto the steering arm.
  • Abutment means on the steering arm frictionally engages the inner end of said hand piece increasingly restricting its rotating motion as the end cap is tightened.
  • FIG. I is a top view of an outboard motor steering arm and throttle grip with a friction control device of the invention.
  • FIG. 2 is a vertical cross section through a side elevation of the handle of FIG. 1 illustrating a throttle friction control mechanism of the invention in the engaged position.
  • FIG. 3 is similar to FIG. 2 except that the throttle friction mechanism of the invention is illustrated in the disengaged position.
  • FIG. 4 is a cross section of a throttle control handle of the invention taken along line 4-4 of FIG. 3.
  • FIG. 5 is an interior end view of an end cap of the invention taken along Line 5-5 of FIG. 3.
  • FIG. I shows a steering arm I for an outboard motor configured to pivotally engage the motor housing and throttle control mechanisms upon an axis 2 so that it can be raised and lowered.
  • Control of the motor throttle is exercised by twisting a hand grip 3 mounted upon the steering arm 1.
  • Throttle position legends 4 typical of the art, may be provided.
  • freedom of movement of the hand grip 3 is controlled by adjusting an end cap 5 which causes a frictional force to be exerted upon the body 7 of the hand grip 3.
  • the hand grip 3 includes a cylindrical body 7 and an elastomeric outer covering 8.
  • the outer extremity of the steering arm 1 is reduced in diameter forming a basically cylindrical extension 10.
  • the body 7 of the hand grip 3 has a bore 12 therein sized to engage the extension 10 of the steering arm yet freely rotate thereabout.
  • the extension 10 is contoured to create inner and outer annular bearing elements 13 and 14 respectively, which engage and steady the body 7 of the handle grip with the area 15 in between being reduced in diameter so as not to engage the body 7.
  • the end cap 5 is configured to thread upon the outer extremity of a rectangular rod 17 which forms a portion of the throttle control linkage for the motor.
  • the rod 17 extends through an axial bore 16 in the steering arm 1.
  • the bore 16 is enlarged at the inner end 18 to receive therein a portion of a fitting 19 attached to the inner end of the rod 17.
  • the fitting 19 includes an annular shoulder 20 which is engaged by the inner end 21 of a tubular portion 22 of the steering arm 1.
  • the end cap 5 has an axial bore 25 therein threaded to receive the threaded end 26 of the shaft 17.
  • a bore 31 extending through the outer portion of the handle body 7 is rectangular, as is the shaft 17, so that turning of the grip 3 rotates the shaft 17 and the end cap 5.
  • friction between the handle body 7, the washer 29 and the shoulder 11 is increased. Friction between the element 19 and the inner face 21 of the inner annular portion 22 of the steering handle I is reduced by a lubricant.
  • FIG. 3 illustrates the above described assembly with the end cap 5 backed off of the rod 17 so that the handle 3 rides loosely upon the extension of the steering arm 1.
  • FIG. 4 illustrates certain elements of the internal structure of the handle grip 3.
  • the body 7 has four axial lands 33, 34, 35 and 36 extending from an annular groove 37 in the forward portion thereof (see FIG. 3) to the outer end thereof, the purpose of which is to engage matching detents in the neoprene rubber grip 8 which prevents it from slipping rotationally upon the body 7.
  • the body 7 is reduced in weight by a series of arcuate bores 38, 39, 40 and 41 in the body thereof as illustrated in the drawings.
  • the periphery of the end cap 5 and the outer end of the neoprene grip 8 are matchingly stepped.
  • the inner annular edge 51 of the neoprene grip 8 is slightly undersized with respect to its receiving step 52 in the cap 5.
  • the frictional engagement between the surfaces 51 and 52, and the relatively fine nylon threads of the cap, together act to prevent its being vibrated loose during motor operation. This engagement also aids in keeping water and dirt from the interior of the handle.
  • the body of the cap 5 is also reduced in weight by the presence of three arcuate bores 43, 44 and 45 positioned so that the solid annular portions 46 and 47 of the cap 5 engage the solid annular portions 48 and 49 of the handle body 7 when the cap 5 is tightened.
  • the invention thus presents a simple and effective means for creating and varying frictional restraint to the movement of the throttle grip 3 about the steering arm I, and thereby controlling movement of the throttle linkage shaft 17. It will be apparent to those skilled in the art that retaining shaft 17 in a selected position will effectively maintain the engine throttle at a corresponding position.
  • Throttle control mechanism for an outboard motor comprising a throttle control hand grip rotatingly mounted upon a steering arm of an outboard motor, and
  • means for retaining said hand grip in a preselected position comprising means for creating frictional force between the hand grip and the steering arm in opposition to rotation of said hand grip, including means for adjusting said frictional force creating means whereby the frictional force opposing rotation of said hand grip can be varied.
  • said frictional force creating means comprises a first movable abutting means
  • second abutting means for engaging the other end of said hand grip in opposition to the movement of said first abutting means.
  • said first abutting means comprises an end cap for said hand grip
  • said means for urging said first abutting means against one end of said hand grip comprises means for threading said cap axially with respect to the steering handle
  • said second abutting means comprises a stationary shoulder affixed to the steering handle.
  • said means for threading said cap axially with respect to said steering handle comprises a throttle control rod extending through a bore in the steering handle;
  • said means for urging said grip member against said annular shoulder comprises a first threaded member affixed to said steering arm and extending axially thereto;
  • a second member having threads adapted to rotationally advance and retard axially with respect to said first member
  • said second member configured to engage the outer end of said hand grip member
  • At least one of said members having threads made of a resiliently deformable material so that a resilient bias is imparted to said hand grip member when said second member is threaded into engagement therewith.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
US00246339A 1972-04-21 1972-04-21 Friction lock for outboard motor throttle hand grip Expired - Lifetime US3782219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24633972A 1972-04-21 1972-04-21

Publications (1)

Publication Number Publication Date
US3782219A true US3782219A (en) 1974-01-01

Family

ID=22930253

Family Applications (1)

Application Number Title Priority Date Filing Date
US00246339A Expired - Lifetime US3782219A (en) 1972-04-21 1972-04-21 Friction lock for outboard motor throttle hand grip

Country Status (4)

Country Link
US (1) US3782219A (ko)
JP (1) JPS5132038B2 (ko)
FR (1) FR2181012B1 (ko)
IT (1) IT980279B (ko)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287785A (en) * 1979-12-12 1981-09-08 Hunt Robert T Throttle setting device
GB2145540A (en) * 1983-05-16 1985-03-27 Yanmar Diesel Engine Co Outboard motor governer
US4650429A (en) * 1985-08-09 1987-03-17 Brunswick Corporation Throttle friction device for outboard motor
US5340342A (en) * 1993-06-02 1994-08-23 Brunswick Corporation Universal tiller handle with shift and throttle
US6491555B2 (en) * 2000-08-25 2002-12-10 Honda Giken Kogyo Kabushiki Kaisha Throttle grip position maintaining device in outboard engine system
US7021172B1 (en) * 2003-04-01 2006-04-04 Perry David S Hydraulic throttle for vehicles
US20090193930A1 (en) * 2008-02-01 2009-08-06 Paul Geoffrey Ashman Handlebar twist-grip control lock
US20130213177A1 (en) * 2012-02-17 2013-08-22 Stephen M. Ruth Assembly for selectively locking the angular position of a biased throttle grip
US10745095B2 (en) * 2016-10-25 2020-08-18 Changzhou Golden Motor Technology Co., Ltd Electric outboard motor for boat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA544153A (en) * 1957-07-30 John C. Nichel, Jr. Hand grip control device for internal combustion engines
US3395592A (en) * 1966-09-29 1968-08-06 Morse Controls Inc Vernier control with automatic release

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA544153A (en) * 1957-07-30 John C. Nichel, Jr. Hand grip control device for internal combustion engines
US3395592A (en) * 1966-09-29 1968-08-06 Morse Controls Inc Vernier control with automatic release

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287785A (en) * 1979-12-12 1981-09-08 Hunt Robert T Throttle setting device
GB2145540A (en) * 1983-05-16 1985-03-27 Yanmar Diesel Engine Co Outboard motor governer
US4650429A (en) * 1985-08-09 1987-03-17 Brunswick Corporation Throttle friction device for outboard motor
US5340342A (en) * 1993-06-02 1994-08-23 Brunswick Corporation Universal tiller handle with shift and throttle
US6491555B2 (en) * 2000-08-25 2002-12-10 Honda Giken Kogyo Kabushiki Kaisha Throttle grip position maintaining device in outboard engine system
US7021172B1 (en) * 2003-04-01 2006-04-04 Perry David S Hydraulic throttle for vehicles
US20090193930A1 (en) * 2008-02-01 2009-08-06 Paul Geoffrey Ashman Handlebar twist-grip control lock
US8272294B2 (en) * 2008-02-01 2012-09-25 Paul Geoffrey Ashman Handlebar twist-grip control lock
US20130213177A1 (en) * 2012-02-17 2013-08-22 Stephen M. Ruth Assembly for selectively locking the angular position of a biased throttle grip
US8887594B2 (en) * 2012-02-17 2014-11-18 Aks Engineering, Llc Assembly for selectively locking the angular position of a biased throttle grip
US10745095B2 (en) * 2016-10-25 2020-08-18 Changzhou Golden Motor Technology Co., Ltd Electric outboard motor for boat

Also Published As

Publication number Publication date
JPS5132038B2 (ko) 1976-09-10
FR2181012A1 (ko) 1973-11-30
JPS5047393A (ko) 1975-04-26
DE2317387A1 (de) 1973-11-08
DE2317387B2 (de) 1976-01-22
IT980279B (it) 1974-09-30
FR2181012B1 (ko) 1977-04-29

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