US3697741A - Mechanical headlamp adjusting means - Google Patents

Mechanical headlamp adjusting means Download PDF

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Publication number
US3697741A
US3697741A US40605A US3697741DA US3697741A US 3697741 A US3697741 A US 3697741A US 40605 A US40605 A US 40605A US 3697741D A US3697741D A US 3697741DA US 3697741 A US3697741 A US 3697741A
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Prior art keywords
headlamps
crankarm
vehicle
cable
wheels
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US40605A
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English (en)
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Gideon Petrus Schoeman Yssel
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GIDEON PETRUS SCHOEMAN YSSEL
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GIDEON PETRUS SCHOEMAN YSSEL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
    • B60Q1/10—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution
    • B60Q1/11—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution by mechanical means

Definitions

  • ABSTRACT Mechanical arrangements for automatically raising or lowering of light beams emitted by vehicle headlamps I responsive to uneven sag of the vehicle body at the front and at the rear, the arrangements providing flexible connections extending between parts associated with and movable relative to sprung and unsprung vehicle members and adapted to control the operation of a light beam adjusting mechanism in or against a direction of applied resilient biassing.
  • the flexible connections being of a kind for leading along tortuous paths as may be required on different vehicles.
  • SHEET 1 [IF 3 MECHANICAL HEADLAMP ADJUSTING MEANS BACKGROUND OF THE INVENTION FIELD OF THE INVENTION
  • a motor and like vehicle having the headlamps mounted on a body which is resiliently carried on the wheels so that during darkness the light beams remain correctly directed with respect to a mean plane containing the wheel axes under varying difierently loaded conditions of the vehicle body or when rapid acceleration or deceleration takes place.
  • the rear and/or the front (as the case may be) of the vehicle sags which has the undesirable and often dangerous effect of changing the mean angle of the light beams, emitted by the headlamps, relative to the road surface.
  • a mechanical actuating arrangement for automatic adjustment of a light beam emitted by at least one headlamp of a vehicle having a resiliently suspended body and mechanical parts at the front and rear which are movable relative to the body and a mean plane containing the axes of the wheels on movement of the body relative to said plane, and also having at least one headlamp attached to a mechanism whereby the mean angle of the emitted light beam is changed relative to the body for controlling the said angle in proportion to a resultant difference in displacement of the front and rear of the vehicle body, which includes an elongated flexible member attached to a relatively movable part at one end of the vehicle and to the mechanismadapted to change the angle of the light beam emitted by the headlamp, and a connection from the relatively movable part at the opposite end of the vehicle to the said light beam angle changing mechanism; the connections of the relatively movable vehicle parts to the light beam angle changing mechanism being such that different displacing movements of the relatively movable parts at the opposite ends of
  • the elongated member comprises a flexible cable capable of being led and guided along a tortuous path from the relatively movable part at one end of the vehicle to the light beam angle changing mechanism.
  • spring-like devices may be provided to present a lost motion efl'ect for avoid instantaneous changes of the light beam angles so that flickering, due to road surface irregularities, may be prevented.
  • the light beam angle changing mechanism may comprise a switch device controlling energizing of any one of a number of lamp filaments provided in the headlamp.
  • Such switch device should include an operating arm to which the actuating arrangement is connected. Such is preferably spring loaded and against which the said arrangement is adapted to act.
  • the switch device is adapted to be advanced to connect different filaments separately to the electric current supply source for changing the angle of the emitted light beam in relation to the vehicle body and the plane contained in the axes of the wheels.
  • the headlamp is or the headlamps are tiltable in forward and rearward directions.
  • at least the reflector/s of the headlamp/s is/are pivotally mounted about a transverse axis.
  • the flexible elongated member is a cable of the sheathed kind, of which a core cable is axially displaceable therein. In other forms cables or wires are used.
  • FIGS. 1, 2, 3, 4, 5, 6, 7, 8 and 9 are diagrammatic views showing nine modified forms of the mechanical arrangement and means for automatic adjustment of light beams emitted by headlamps of a vehicle constructed according to the invention
  • FIG. 10 is a diagrammatic view showing a modified form of connection of the mechanical arrangement to semi-eliptical rear springs of a vehicle
  • FIG. 11 is a view of a part incorporated in the form of the arrangement shown in FIG. 4;
  • FIG. 12 is a modified form of the part shown in FIG. 11;
  • FIG. 13 is a further modified form of the part shown in FIG. 11;
  • FIG. 14 is a still further modified form of the part shown in FIG. 1 1.
  • numeral 10 denotes an anti-roll bar which is at the rear of the vehicle and having a downwardly directed central crank arm 12.
  • An anti-roll bar at the front of the vehicle is denoted by numeral 14 and is also provided with a downwardly directed crank arm 16 at its middle portion.
  • a pair of headlamps 18, or only the reflectors of the headlamps are tiltably mounted about transverse horizontal axes.
  • the headlamps 18 or their reflectors are preferably biassed by a spring 20 adapted to apply an upwardly tilting bias to the headlamp or the reflectors.
  • the headlamps 18 are caused to be tilted downwardly by links 22 connected onto crank arms 24 provided on a joumalled shaft 26.
  • the shaft 26 in turn is provided with an actuating crank arm 28.
  • the crank am 28 is connected by a cable 30 to the crank arm 12 of the rear anti-roll bar after passing through thecrank arm 16 of the front anti-roll bar 14.
  • a portion of the cable 30 slidably engages a sheath 31.
  • the sheath 31 is fixed by one end to the front of the crank arm 16 of the front anti-rollbar l4 and has its opposite end fixed to the chassis or body of the vehicle as at 32.
  • the front end of the cable 30 is attached to the actuating crank arm 28.
  • FIG. 3 shows an arrangement, of the kind shown in FIG. 2, where it is impractical to have crank arm 16.1 and also crank arm 12 extending upwardly.
  • the cable 30.1 is connected to one limb of a bell-crank lever 40 which is pivotally suspended from the vehicle body as downward tilting of the headlamps.
  • the 7 links 22 are connected to the bottom of the head-lamps and not the top as is shown in FIG. 2.
  • the crank arm 16 of the front anti-roll bar is directed downwardly.
  • FIG. 4 shows a form of the invention suitable for application on vehicles which are not provided with antiroll bars or where it is not practical to employ anti-roll bars with crank arms.
  • a bell crank lever 40 is provided which is attached to the vehicle body is swivelable and preferably biassed fashion to maintain contact with the axle casing 44.
  • Arm 42.1 of the lever 40 is bearingly held in engagement with a center portion of the rear axle casing 44, e.g. the differential casing, while the arm 42 is connected by cable 30.2 to the actuating crank arm 28 of the shaft 26.
  • a portion of the cable 30.2 passes over a pulley 46 mounted on a transverse bar 48 which in turn has oneend pivotally, and the opposite end pivotally and slidably, connected to transverse and swingably mounted spring carrying and wheel mounting beams, wishbone frames or brackets 50 of the vehicle.
  • the pulley 42 moves upwardly relative to the body, permitting upward tilting of the headlamps 18 due to the biassing by spring 20.
  • the cable 30.2 On sagging of the rear I of the vehicle the cable 30.2 is drawn rearwardly and causes downward tilting of the headlamps 18.
  • the bellcrank lever 40 may be fixed to the body in suspended fashion by a resilient material block 52 (see FIG. 1 1).
  • FIG. 5 The form of the invention shown in FIG. 5, particularly suitable on motor vehicles of which 'the differential gear casing 54 is suspended from the body and from which swivelable rear axles 56 extend, provides for the rear end of the cable 30.2 to be fixed to a rigid transverse bar. 58 which has its ends swivelably attached to downwardly projecting arm forming brackets 60 fixed on'rear axle bearing locating ties 62 which in turn are pivotally attached to the vehicle body. At the front of the vehicle a pulley 46 is provided rotatably on a transverse pin extending from the free end of crank arm 16.2 fixed to and projecting rearwardly from the middle portion of a front anti-roll bar 14.
  • FIG. 10 shows a modification with the cable 30.2 fixed to the center of a light bar 66 whereas cables 30.6 connect the outerends of bar 66 to the downwardly directed arms of brackets 60 fixed to ties 62 or semi-eliptical springs.
  • the arm forming brackets should be mounted close to the front swivelable ends of the ties 62 or the said springs.
  • FIG. 6 shows a modification in which the rear end of cable 30.2 is attached to the vehicle body 32 at the rear of the latter and arranged to pass over a pulley 46.1 which is joumalled on a transverse bar 58.1.
  • Bar 58.1 is swivelably attached by the ends to the rear axle bearing locating ties 62 or rear semi-elliptical springs so that on sagging of the vehicle at the rear the pulley 46.1 moves towards the body.
  • the arrangement according to FIG. 3 or according to any of those shown in 4 or 5, when modified, may be used.
  • As the drive shaft to the differential 54 may obstruct central location of the pulley 46.1 on the bar 58.1, such pulley may be disposed at a'slightly off-center position on the bar.
  • Cable 30.5 connects the front anti-roll bar crank arm 16, which differs in length from arm 12, to bar 66.1 at a position determined by a proportion of u/v y/x Cables 30.3 and 30.5 are kept under tension by spring 68, attached to the body 32, while the headlamps 18 are biassed by spring 20 to a downward] sloping position.
  • FIG. 8 shows an arrangement where the crank arms 12, 16 on the anti-roll bars 10, 14, differ in length and move in the same direction with opposite movement of the front and the rear ends of the vehicle body (-i.e. when the front lifts and the rear sags).
  • FIG. 9 illustrates an application of the invention on a vehicle of which the rear wheels are mounted on levers 80 which are pivotally attached to the vehicle body.
  • crank arms 82 are provided which are attached to cable 30.2 by convergingly arranged cables 30.6.
  • connection of such cables is preferable onto a ring 84.
  • the arrangement is substantially similar to that shown in FIG. 7. 1
  • the end of the cable or core cable may be attached to a center portion of the said A- bracket, onto a downwardly projecting arm on said bracket, or a cable pulley may be attached to said bracket.
  • lever 40.1 shown in FIG. 12, and for the same purpose as bell-crank lever 40, comprises a curved blade spring adapted for bolting, rivetting or like fixing to the body by end 70 while the opposite end region bearingly and slidably engages on the axle casing 44. Between the ends of the lever 40.1 a pin 72 extends downwardly and forms a lever arm for connecting thereto of cable 30, 30.1, 30.2.
  • the lever 40.2, shown in FIG. 13, also comprises a curved blade spring of greater curvation than that shown in FIG. 12.
  • End 70 is also fixed to the body 32 while a projecting pin 78 on an intermediate portion is adapted to slidingly bear on the axle casing 44 whereas the end portion 76 provides for the connection of the cable.
  • a lever for the same purpose is shown in FIG. 14 .
  • the said lever 40.3 is not resiliently biassed into engagement with the axle casing 44 but is pivotally suspended from body 32 and provides a bifurcated free end 74 which slidably embraces a part of the axle casing. Movement of the axle casing 44 towards or away from the body causes tilting of the lever 40.3.
  • Lever 40.3 is also of bell-crank construction.
  • the second arm 42.2 provides connection for the cable.
  • the arrangements shown and described provide mechanical means to automatically maintain light beams from headlamps at a constant distance in front of a motor vehicle as applicable on vehicles having different formsof body suspensions.
  • a switch having a control .arm, can be employed. Said control arm would be operated by a crank arm 28, 28.1 or 24 to control the electrical circuit to the required filament or headlamp.
  • the switch terminates theelectric current to the dipped beams, adjusted when empty, and connecting or maintaining connection to the dipped filaments of the lamps adjusted when the vehicle is laden, whenever that pair of dipped beams approach the horizontal or are directed upwardly due to loading or acceleration, in order to eliminate dangerous dazzle.
  • the various cables maybe lead over pulleys, through eyes or the like along a tortuous or winding path where it is not possible or not desirable toextend straight to the connection points.
  • the arrangements may be applied to new vehicles and can alsobe readily fitted to existing vehicles. 14
  • Mechanical means for automatically adjusting headlamps pivotally mounted on a. resiliently suspended body of a vehicle having wheels at the front end and at the rear end for maintaining asubstantially constant angle between light beams emitted by the headlamps and a mean plane containing the axes of the front and the rear wheels of the vehicle on uneven sagging of the front and rear ends of the body relative to said plane comprising: a joumalledoscillatable shaft transversely across the body and having crankarms connected by links to the headlamps, to a spring providing a bias to tilt the headlamps in one direction, and an actuator: a first member at the rear of the vehicle attached to the body and mountings for the rear wheels and adapted for movement in proportion to vertical movement of the body relative to the wheels: a second member at the front of the vehicle attached to the body and mountings for the front wheels to perform movement in proportion to vertical movement of the body relative to the front wheels; the actuator including a flexible cable fixed by one end to the said first member and by an opposite end to a
  • Mechanical means for automatically adjusting headlamps of a wheeled vehicle including first and second members comprising antiroll bars having crankarms on their center portions, the crankarm of the first member being connected by a flexible cable to a movable headdisposed forward "of the crankarm of the second member and also forwardly of a crankarm of the oscillatable shaft which is disposed in spaced relationshipforwardly of the crankarm of the second member, a compression spring bearing on the crankarm of the second member and a rear side of the crankarm of the oscillatable shaft, a compression spring bearing on the-head and a front side of the crankarm of the oscillatable shaft,'whereby downward tilting of the headlamps is effected byrearward movement of the head and pressure application on the crankarm of the oscillatable shaft through the compression spring forwardly of said crankarm whereas a variable pressure in the opposite direction on said crankarm is provided by the compression spring between the rear face of said crankarmand the crankarm of the second member.
  • Mechanical means for automatically adjusting headlamps of a wheeled vehicle including a first member comprising a bellcrank lever suspended movably from the body and of which one arm engages a rear wheel axle and differential casing of the vehicle and another arm providing connection for one end of the cable whereas the second member comprises an anti-roll bar having a crankarm on a center portion, a movable head on the opposite end of the cable disposed in spaced relationship forwardly of a crankarm of the oscillatable shaft and the crankarm of the anti-roll bar which is disposed 'rearvvardly of the crankarm of the'oscillatable shaft, compression springs bearing on front and rear sides of the crankarm of the oscillatable shaft and the head and crankarm of the anti-roll bar.
  • Mechanical means for automatically adjusting headlamps pivotally mounted on a resiliently suspended body ofa 'vehicle having wheels at a front end and at a rear end for maintaining a substantially constant angle between light beams emitted by the headlamps and a mean plane containing the axes 'of the front and the rear wheels of the vehicle on uneven sagging of the front and rear ends of the body relative to said plane including a joumalled oscillatable shaft transversely across the body and having crankarms connected by links to the headlamps, to a spring providing a bias to tiltable headlamps in one direction, and to an actuating cable; a transverse bar swivelably attached to short downwardly directed levers on tying members extending pivotally from the vehicle body to bearing mountings of the rear wheels and a connection on a center portion of the bar for one end of an actuating cable; a transverse bar connected by, one end pivotally and by an opposite end pivotally and slidable to spring supporting and wheel mounting pivot beams of the

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
US40605A 1969-05-29 1970-05-26 Mechanical headlamp adjusting means Expired - Lifetime US3697741A (en)

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ZA693851 1969-05-29

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US (1) US3697741A (enrdf_load_stackoverflow)
JP (1) JPS5111373B1 (enrdf_load_stackoverflow)
DE (1) DE2026448C3 (enrdf_load_stackoverflow)
ES (1) ES380144A1 (enrdf_load_stackoverflow)
FR (1) FR2048957A5 (enrdf_load_stackoverflow)
GB (1) GB1319161A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955080A (en) * 1974-03-30 1976-05-04 Lucas Electrical Company Limited Motor vehicle with headlamp tilting mechanism
US4066886A (en) * 1974-09-26 1978-01-03 The Lucas Electrical Company Limited Motor vehicle with headlamp tilting mechanism
US20060013005A1 (en) * 2004-07-16 2006-01-19 North American Lighting, Inc. Self-aim vehicle light device
US20140204598A1 (en) * 2011-08-01 2014-07-24 Piaggio & C. S. P. A. Regulation System Of The Headlights In A Tilting Vehicle With Roll Mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729620B1 (fr) * 1995-01-23 1997-04-04 Laribe Armand Installation pour la correction de la position des phares d'un vehicule en fonction de la charge s'exercant sur l'arriere et/ou l'avant de sa carrosserie

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1817256A (en) * 1930-06-11 1931-08-04 Heikens Robert Dirigible headlight
US2049802A (en) * 1935-12-16 1936-08-04 Hamm Fred Headlight for vehicles
US2105866A (en) * 1935-05-25 1938-01-18 Milton W Sheaffer Headlight control means for motor vehicles
US2250734A (en) * 1939-09-26 1941-07-29 Wallace S Thompson Dirigible headlight
US3316397A (en) * 1964-11-10 1967-04-25 Yssel Gideon Petrus Schoeman Vehicle headlamp adjusting means
US3370162A (en) * 1964-06-18 1968-02-20 Citroen Sa Andre Devices for automatically adjusting the inclination of the headlamps of an automotive vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE659043A (enrdf_load_stackoverflow) * 1964-02-01
LU48773A1 (enrdf_load_stackoverflow) * 1964-06-18 1965-08-04
JPS472507U (enrdf_load_stackoverflow) * 1971-01-28 1972-08-29

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1817256A (en) * 1930-06-11 1931-08-04 Heikens Robert Dirigible headlight
US2105866A (en) * 1935-05-25 1938-01-18 Milton W Sheaffer Headlight control means for motor vehicles
US2049802A (en) * 1935-12-16 1936-08-04 Hamm Fred Headlight for vehicles
US2250734A (en) * 1939-09-26 1941-07-29 Wallace S Thompson Dirigible headlight
US3370162A (en) * 1964-06-18 1968-02-20 Citroen Sa Andre Devices for automatically adjusting the inclination of the headlamps of an automotive vehicle
US3316397A (en) * 1964-11-10 1967-04-25 Yssel Gideon Petrus Schoeman Vehicle headlamp adjusting means

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955080A (en) * 1974-03-30 1976-05-04 Lucas Electrical Company Limited Motor vehicle with headlamp tilting mechanism
US4066886A (en) * 1974-09-26 1978-01-03 The Lucas Electrical Company Limited Motor vehicle with headlamp tilting mechanism
US20060013005A1 (en) * 2004-07-16 2006-01-19 North American Lighting, Inc. Self-aim vehicle light device
US7144141B2 (en) 2004-07-16 2006-12-05 North American Lighting, Inc. Self-aim vehicle light device
US20140204598A1 (en) * 2011-08-01 2014-07-24 Piaggio & C. S. P. A. Regulation System Of The Headlights In A Tilting Vehicle With Roll Mechanism
JP2014526996A (ja) * 2011-08-01 2014-10-09 ピアッジオ・エ・チ・ソチエタ・ペル・アツィオーニ ロール機構を備えたチルティングビークルのヘッドライトの調整システム
US9701238B2 (en) * 2011-08-01 2017-07-11 Piaggio & C. S.P.A. Regulation system of the headlights in a tilting vehicle with roll mechanism
TWI619633B (zh) * 2011-08-01 2018-04-01 比雅久股份有限公司 具有擺轉機構之傾斜式載具之頭燈調整系統

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Publication number Publication date
GB1319161A (en) 1973-06-06
FR2048957A5 (enrdf_load_stackoverflow) 1971-03-19
DE2026448C3 (de) 1981-10-08
ES380144A1 (es) 1973-02-16
JPS5111373B1 (enrdf_load_stackoverflow) 1976-04-10
DE2026448A1 (de) 1970-12-03
DE2026448B2 (de) 1981-01-22

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