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Publication numberUS2371336 A
Publication typeGrant
Publication dateMar 13, 1945
Filing dateFeb 6, 1942
Priority dateFeb 6, 1942
Publication numberUS 2371336 A, US 2371336A, US-A-2371336, US2371336 A, US2371336A
InventorsWalter P Levon
Original AssigneeF L Jacobs Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Motor operated door closing device
US 2371336 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

March 13, 1945'. w -P LEVON 2,371,336

MOTOR OPERATED DOOR CLOSING DEVICE Filed Feb. 6, 1942 Z'mventor 7&5.

Gttomegs crosssection. Extending over the outer end of the bracket arm on opposite sides thereof is The motor is provided with a motor shaft 36 connected to a screw shaft 31 having a nut 38 The motor having one of its ends secured to one of the hinge members of said hinge connection, and screwand-nut mechanism rocking and swinging with the motor interconnecting said motor and said coil spring and responsive to the operation of said motor for storing energy in said coil spring for closing said door after being manually opened. whereby said door may be closed without necessitating the occupant of said vehicle changing his position,.said coil spring and screw-and-nut 'mechanism being maintained in straight-line threaded thereon. The screw shaft-.31 is provided with a stop portion 39 between the motor shaft 36 and screw shaft 31. The nut 38 is' provided with a peripheral spiral groove 40 having a. portion of thefconvolutions ofv a coil spring mounted therein and anchored thereto at its end 42 (Fig. 2). The coil spring 4! surrounds the screw shaft 31 and the stop cap 43 secured as at M to theouter end thereof (Fig. 2). t The opposite end45 of thecoilspring 4| passes through aperture 26 in the lug 25 and is anchored thereto by bending it in the form of a loop.

In the operation of the door closing device of i When the motor 3 5 isjthus energized, the

rotation of its shaft 36 and the screw shaft'3l causes the nut 38. to travel alongthe screw shaft 3'! toward the motor 35. This stretches the spring 4|, but does not immediately move the door H, due to the holding action of the door check. Thus a comparatively small motor 35 is able to store up a relatively large amount of energy in the spring 4|. .When the energy stored in the spring 4| is suflicient to overcome the resistance of the door check, the pull upon the hinge l2 at the lug 25 causes the door- Ii to swing into its closed position (Fig. 1). The nut 38 continues to travel until it meets the stop 39 or until the switch is opened. The motor 35 is of the type which will permit temporarystalling without its becoming burnt out.

It will be evident that the operatorcan also open or close the door manually without employing the motor 35 and without themotor 35 interfering with the manually closing. of the door or vice .versa. The door. closing device-of this invention is thus a very helpful device-especially invehicles equipped with very wide doors, since the operator can get into the car and seat himself behind the wheel, yet be able. to close the .door even though he cannot reach it directly.

,While a specific embodiment of the invention hasbeen described and illustrated,.lit will be understood that various modifications may he made within the scope of the appended claims without departing -from the spirit of the invention. c

What I claim is: 1. In a closing device for a vehicle door hingedly connected to the body oisaid vehicle and adapted to be manually opened, a motor rockably and swingingly securedto said vehicle body, said motorhaving an armatureshait, a coil spring driving relationship with said armature shaft throughout the swinging movement of said door.

2. In a closing device for a vehicle door hingedly connected to the body of said vehicle and adapted to be manually opened, a motor rockably and swingingly secured to said vehicle, said motor having an armature shaft aligned with said swinging connection, a spring device having one endsecured to the hinge member carried by said door, a screw element coextensive with said armature shaft, a nut element thereon operatively interposed between aid motor and the other end of said spring device, said screw element being connected to said. motor to rock therewith and said nut element being directly connected to said spring device, and means responsive to the operation of said motor for causing said elements to move in a straight line relationship with said armature shaft and relatively to one another to deform said spring device and swing said door on its hinge connection toclosed position after having been manually opened.

3. In a closing device for a vehicle door hingedly connected to the body of a vehicle and adapted to be manually opened, said hinge connection including a hinge strap carried by said vehicle door pivotally attached to said body, a motor rockably and swingingly secured to said vehicle, said motor having an armature shaft, a tension spring having one end secured to the hinge strap in spaced relation from the pivotal point of said. hinge strap; a screw element coextensive with said armature shaft, a nut element threaded thereon operatively interconnected between the other end of said spring and said screw element, and said spring, screw eledoor-about its hinge connection to close said door member after said door has been manually opened. 1

4. In a closing device for a vehicle door hingedly and pivotally connected to the body of a vehicle and adapted to be manually opened, a motor rockably secured to said vehicle body, said motor having an armature shaft aligned with saidrockable connection between the motor and said vehicle body, a screw shaft connected to the armature shaft rockable with said motor, a traveiing nut threaded on said screw shaft, and a spring encircling saidflscrew shaft and connected at one end to said nut and at the other end directily to the hinge connection in spaced relation from the pivotal point thereof whereby rotation of said motor armature shaft causes said nut to travel on said screw shaft and tension said spring so as to swing said door on its hinge connection

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2592891 *Nov 25, 1949Apr 15, 1952Harvey H HallElectrically actuated closure operator
US2594643 *Jun 16, 1950Apr 29, 1952Edward F GustishaVehicle trunk lid control
US2639142 *Feb 8, 1950May 19, 1953Perfection Plastic EngineeringAutomatic door actuator
US2938749 *Jan 20, 1956May 31, 1960Gen Motors CorpVehicle closure and operating mechanism therefor
US4782628 *Jan 29, 1987Nov 8, 1988Gaddis John JGate opening apparatus
US4934203 *Jan 6, 1989Jun 19, 1990Bailey Thomas RPower arm
US5140771 *Jun 4, 1991Aug 25, 1992Masco Industries, Inc.Power window actuator
US5161419 *Jun 4, 1991Nov 10, 1992Masco Industries, Inc.Power window actuator
US5325829 *Sep 25, 1992Jul 5, 1994Schmelzer CorporationIntake manifold air inlet control actuator
US5385061 *Mar 24, 1992Jan 31, 1995Mascotech ControlsPower window actuator
US5680728 *Mar 16, 1995Oct 28, 1997Saturn Electronics & Engineering, Inc.Power actuator for a vehicle window
US7234757Aug 8, 2005Jun 26, 2007Magna Closures Inc.Electromechanical strut
US7296380Oct 19, 2001Nov 20, 2007Besam International HpDevice for operating a door leaf or the like and door structure provided with such a device
US7566092Feb 26, 2007Jul 28, 2009Magna Closures Inc.Electromechanical strut
US7938473Mar 16, 2009May 10, 2011Magna Closures Inc.Electromechanical strut
US8027769 *Jul 2, 2007Sep 27, 2011Edscha AgDevice and method for controlling a vehicle flap or a vehicle door
US8042301 *Jun 15, 2007Oct 25, 2011Stabilus GmbhFlap drive
US8403397 *Dec 16, 2010Mar 26, 2013Dr. Ing. H.C. F. Porsche AktiengesellschaftAdjustable tailgate support
US20110140476 *Dec 16, 2010Jun 16, 2011Dr. Ing. H.C. F. Porsche AktiengesellschaftAdjustable tailgate support
US20120000304 *Aug 6, 2008Jan 5, 2012Hamminga Jeffrey SLinear drive actuator for a movable vehicle panel
EP0727554A2 *Feb 15, 1996Aug 21, 1996Bernard IseneggerOne-piece window drive with electrical screw actuator and deviator
WO2002033206A1 *Oct 19, 2001Apr 25, 2002Eric BaeckmanDevice for operating a door leaf or the like and door structure provided with such a device
Classifications
U.S. Classification49/340, 49/343, 122/367.3
International ClassificationE05F15/12
Cooperative ClassificationE05Y2900/531, E05F15/124
European ClassificationE05F15/12D3