US2422456A - Window lifting and lowering device for motor vehicles - Google Patents

Description

June 17, 1947. W. s. wlsr-:MAN 2,422,456

WINDOW LIFTING AND LOWERING DEVICE FOR MOTOR VEHICLES Filed April 10, 1944 Srmentor (Itfornegs Patented June 17, 1947 WINDOW LIFTING AND LOWERING DEVICE i FOR MOTOR VEHICLES Walter S. Wiseman, Detroit, Mich., assignor of fifteen per cent to Joseph P. Aubin and fifteen per cent to Ernest M. Zahn, both of Detroit,

Mich.

Application April 10, 1944, Serial No. 530,283

4 Claims. l

This invention relates to new and useful improvements in window lifting and lowering devices for motor Vehicles.

The primary object/of this invention is to provide a window lifting and llowering device in which the operating parts are contained in an oil tight casing located within the confines of the vehicle door so that said lifting and lowering device will be wholly within the normal contour thereof.

Another object of the invention is to provide a window lifting and lowering device in which the operating parts will be constantly lubricated in a bath of oil contained in said casing so that they will withstand considerable wear and permit the easy and frequent raising and lowering of the vehicle windows.

Another object of the invention is to provide a window lifting and lowering device capable of being easily and quickly installed as a unit in a motor vehicle door frame of conventional and standard form without requiring the use of additional linkage for moving the window.

Another object of the invention is to provide a window lifting and lowering unit which may be easily and readily installed in a motor vehicle door structure by being inserted through a relatively small opening therein and fastened in place on the inner wall of the door structure so that it is only necessary to make a single connection with the window lifting and lowering linkage already installed in the door structure.

Other objects and advantages will become apparent during the course of the following description of the accompanying drawing, wherein:

Figure l is an elevational View of a vehicle door illustrating the manner in which the invention is applied thereto;

Figure 2 is an enlarged vertical sectional view of the window lifting and lowering mechanism showing the vari-ous parts in detail and illustrating the manner in which the casing is fastened and supported within the confines of a vehicle door;

Figure 3 is a vertical cross-sectional view of the L unit casing taken on line 3--3 in Figure 2 and looking in the direction of the arrows to illustrate the concealed parts of the unit and the arrangement thereof;

Figure 4 is a horizontal cross sectional 'view taken on line 4--4 in Figure 2 looking in the direction of the arrows illustrating the manner in which the driving motor is attached to the window lifting and lowering unit casing; and

Figure 5 is a horizontal cross-sectional view of the unit casing taken on line 5-5 of Figure 2 illustrating the 'sliding cross-head and its position within said casing.

In the drawing there is shown an embodiment of the invention as being installed in a vehicle door of conventional design and generally designated by the reference character 5. The door is shown as having a glass window 6 slidably mounted for Vertical movement between a pair of vertical guide channels I secured to the door structure 5. Secured to the lower edge of the window is a horizontal channel 8 having a pair of lugs 9 depending therefrom at each end thereof. Within each of the lugs is a horizontal slot I0 in each of .which is a pin II extendingfrom each of the crossed links I2 and I3 which are pivoted as at I4. The lower ends of the links I2 and I3 are pivotally connected to lugs I5 and I6 respectively projecting from the lower ends of the guide channels 'I in opposed relation one to the other. A pin I8 is provided for connecting the lower end of the link I2 to the lug I5 while a pin I8 is secured tothe link I3 for operatively engaging within aslot I9 in said lug I8.

From the above description of the door and window structure it will be readily observed that a vertical upward force applied to the link I2 will cause said glass window 6 to be raised. SimllarlY, a vertical downward force will cause said window to be lowered into said door between the guide channels 'I. As the link I2 is pivoted about its pivot pin I1, the pins II and I8 slide in their respective slots I0 and I9, thereby permitting free and easy movement of the window 6.

The door structure includesy a pair of inner and outer spaced panel members 2S and 2l respectively, connected at their lower ends by a foot portion 22 so as to provide a closed chamber 23 between the panels for permitting the vertical sliding movement of the glass window 6. Formed in the inner panel member 2li. adjacent Ythe lower end of the door structure is an inspecand lowering unit corn-v and nuts which are adapted to clampingly secure the offset ends of the bracket in position with the offset upper end of the bracket fastened above the opening 24 and the lower oiset end of the bracket fastened below said openings (Figure 2).

Each casing section includes front, back, side and end walls 38 to 4I respectively with their meeting edges machined or the like to provide an oil tight point therebetween. Each casing section is provided with a pair of guide ways 42 arranged in spaced apart relation adjacent the corners of the side, front and back walls to slidably guide a crosshead 43 to and from its limits of movement within the unit casing 25. Y

The meeting edges of the carsin'g'walls at the uppermost end of said casing are cut away as at 44 to provide semi-circular openings for receiving a bearing bushing 45 and, similarly, the meeting edges of the bottom walls 4l of the casing are cut away to provide semi-circular'openings 46 for the reception of a bearing bushing 4l in axial alignment with the bearing bushing 45. Rotatably supported by the bearing bushings 45 and 41 is a feed screw 48 having reduced ends 49 and 58 forming bearing surfaces for. beingjournaled in said bushings 45 and 41 respectively. The feed screw 48is threaded in an opening 52 in the crosshead 43 toY feed the same along the guideways 42 upon rotation of the feed screwin either of its twodirections of movement.

The lower portion of the back wall 39 ofsaid casing section 21 is provided with an offset housing formation 53 at the @nds of which are located bearing bosses 54 and-55 Yin axial alignment for supporting a drive shaft 56. y

The drive shaft 56 is directly connected to a reversible electric rcotor'l' secured to an offset angeportion 58 of the casing section-21 byrneans of machine screws or bolts 59 so that the motor will be supported thereon and provide a unitary window lift structure capable of being installed in the motor vehicle door after the door has been hung on the motor vehicle or before the motor vehicle has left the assembly line. Actually, the drive shaft 56 may be in the form of an extension of the armature shaft of the motor 51 with areduced end portion 68 journaled in the bearing boss 54 and the other end journaled in the bearing boss 55. Formed in the other casing section front walls 38 in opposed relation to the offset casing housing 53 is an arcuately curved casing section 6| for accommodating a worm wheel 62 keyed as by means of a key 63 to the reduced bearing portion 50 of the screw feed shaft 48. The worm wheel 62 is in driving engagement with a worm 64 mounted on or formed integral with the armature shaft extension4 5E Yso that rotation of the armature shaft 56 will rotate the feed screw at a reduced rate of speed and thereby cause said crosshead 43 to be reciprocated within the sectional housing 25.

Secured to and extending upwardly from the cross-head 43 is a pair of parallel slide shafts 65 and 66 having their lower ends reduced as at 61 and 68 respectively for being received in openings 69 and 10 so that the extreme lower ends 4 thereof may be upset by being and 12.

The upper ends of the parallel reciprocating rods 65 and 66 are similarly reduced as at 13 and 14 respectively and said rods are adapted to project through the upper wall 4I of the casing 25 and be guided by guide bushings 15 and 16 inserted in cut away portions 11 and 18 formed in the meeting edges of the casing sections 26 and 2l'.

Connected to and extending between the upper ends of the rods 65 and 66 is a bridge piece 18 which is held in place by means of riveting cr upsetting the ends of said rods as at 86 to thereby provide a substantially rigid connection therebetween.

Secured to the intermediate portion of the bridge piece 16 is a clevis 8l having its bifurcated arms 82 projecting upwardly and spaced apart for the reception of a connecting link 83 by kmeans of a pivotal connection 84. A stud 85 is formed on the clevis 8| and said stud is riveted in place as by being upset as at86. The upper end of the connecting link 83 'is pivotally affixed to the cross lever 12 of the window linkages l2 and I3 to impart a Vertical up and down movement thereto.

The casing 25 is filled with a lubricant such as oil or grease to constantly supply'the working parts of the window lift with a lubricant so that said parts will be bathed in a lubricant and thus prevented from becoming worn due vto friction.

riveted as at 1| The electric motor is reversible to cause the cross-head 43 to be reciprocated in both of its directions, consequently the reciprocating rods will, travel up and down in response to the to and fro movement of the crosshead.` Such reciprocating movement will be imparted to the window 6 through the medium of the various connecting links and levers I2, i 3, 19 and 83.

After the window lift" unit has been installed by being affixed to the inner panel-20 of the Vdoor structure, the motor may be electrically connected to the vehicle source of current supply with a suitable reversing switch interposed in the'circuit so that'the driver may operate theA window lift from a remote point such as 'the dashboard ofthe vehicle.

It is to be understood that the form of the lnvention herewith shown and described is to be taken as a preferred embodiment of the same and that various changes maybe made in the shape, size and arrangement of parts without departing from the spirit of the invention or the scope of the subjoined claims.

What I claim is:

1. A power-driven window regulator for raising and lowering a window pane in a vehicle door opening, comprising a casing support mounted within said door and connected thereto a lubricant-tight enclosed casing mounted on said support and having bearing portions therethrough, a vscrew shaft'rotatably mounted within said casing, an external motor connected to said casing andhaving a motor shaft entering said casing, speedreducing mechanism within said casing operatively connecting said motor shaft to said screw shaft, a cross head threadedly connected to said screw shaft, a window pane carrier connected to said window pane and a power-transmitting mechanism extending from said cross head through said bearing portions to said windowpane carrier.

2. A power-driven window regulator for raising and lowering a Window pane in a vehicle door opening, comprising a casing support mounted within said door and connected thereto a lubricant-tight enclosed casing mounted on said support and having bearing portions therethrough, a screw shaft rotatably mounted within said casing, an external motor connected to said casing and having a motor shaft entering said casing, speedreducing mechanism Within said casing operatively connecting said motor shaft to said screw shaft, a cross head threadedly connected to said screw shaft, a window pane carrier connected to said window pane, a pair of reciprocable rods extending from said cross-head through said bearing portions, and means for connecting said rods to said window-pane carrier externally of said casing.

3. A power-driven window regulator for raising and lowering a window pane in a vehicle door opening, comprising a casing support mounted within said door and connected thereto a lubricant-tight enclosed casing mounted on said support and having bearing portions therethrough, a screw shaft rotatably mounted within said casing, an external motor connected to said casing and having a motor shaft entering said casing, speedreducing mechanism within said casing operatively connecting said motor shaft to said screw shaft, elongated guides disposed within said casing on opposite sides of said screw shaft, a cross head threadedly connected to said screw shaft with its opposite ends engaging said guides, a window pane carrier connected to said window-pane and a power-transmitting mechanism extending from said cross-head through said bearing portions to said Window-pane carrier.

4. A power-driven window regulator for raising and lowering a window pane in a vehicle door opening, comprising a casing support mounted within said door and connected thereto a lubricant-tight enclosed casing mounted on said support and having bearing portions therethrough, a screw window-pane, a pair of reciprocable rods extending from said cross head through said bearing portions, and means for connecting said rods to said window-pane carrier externally of said casing, said screw shaft, said guides and said rods being disposed substantially parallel to one another.

WALTER S. WISEMAN.

REFERENCES CTED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,176,751 Hardy et al Mar. 28, 1916 2,331,260 Wiseman Oct. 5, 1943 2,311,972 Simpson Feb. 23, 1943 2,324,145 Floraday July 13, 1943 1,409,459 Ludlow Mar. 14, 1922 2,306,723 Floraday Dec. 29, 1942 925,163 Dickie June 15, 1909 2,337,867 Brotman et al Dec. 28, 1943 1,914,149 Mizer et al June 13, 1933 2,153,516 Eck g Apr. 4, 1939 2,315,571 Wilder Apr. 6, 1943 FOREIGN PATENTS Number Country Date 185,070 Germany June 3, 1907

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