US3444649A - Window raising device - Google Patents

Description

May 20, 1969 c. RlvoLlr-:R 3,444649 WINDOW RAISING DEVICE Filed Jan. 16, 1968 sheet y of s May 20,1969 c. RlvoLlER WINDOW RAISING DEVICE Sheet med Jan. 16, 1968 ThE 7732 WINDOW RAISING DEVICE Filed Jan. 1G, 1968 1 sheet .3 ors o? f H95 C 3,444,649 WINDOW RAISING DEVICE Charles Rivolier, Paris, France, assgnor to Societe Anonyme D.B.A. Filed Jan. 16, 1968, Ser. No. 698,337 Claims priority, application France, Jan. 19, 1967,

Inf. cl. Eosf 11/48 U.S. Cl. 49-352 1 Claim ABSTRACT OF THE DISCLOSURE A window raising device employing a closed loop cable having at least two cable conduits connected by a device including a compression `spring to maintain Aadequate cable tension with said window being mounted to ride upwardly and downwardly within grooves of a frame thereabout.

Such devices are 4generally of the type comprising a window sliding on two parallel grooves provided on a iixed frame by means of a cable which lowers or raises the window through a bearing member rigidly connected to said cable, the latter being generally guided by pulleys iixed to the frame.

In the devices of this type, the cable is subjected to the action of the exterior contaminants which entail important damages to the cable. Furthermore, the mounting of said pulleys is generally diicult to effect.

`It is therefore Ian object of -this invention to provide a window raising device operative to move a window 'slidably mounted on two parallel grooves provided on a l xed frame, said -window raising devi-ce comprising an operatively guided closed loop cable operative upon actuation by a control device to move a bearing 4member connected to the window for lowering or raising the latter, characterized in that said closed loop cable is located in fixed C-shaped tubing 4means which are so secured to the frame that the free portion of said cable located between the free `ends of said C-shaped tubing means extends substantially parallel to said grooves to support said bearing member operatively secured to said free portion of said cable.

It is obvious that with such a feature, the cable is better protected. Furthermore, one of the two portions of the cable `acts on the window to riase it while the second portion lowers it, the two portions of the cable are alternatively submitted to tensile stress during these reverse movements. This feature allows to use a small section cable and consequently not expensive.

Other advantages of the invention will become more apparent on consideration of the following description referring t-o the accompanying drawings wherein;

FIGURE 1 is a schematic View of the window raising device Iaccording to the invention.

FIGURE 2 is a lateral View of the guiding device of the bearing of the cable.

FIGURE 3 is a partial section of a manually control device according to the invention.

FIGURE 4 shows a longitudinal section of a spreading means according to the invention.

FIGURE 5 illustrates partially another embodiment of a window raising device.

FIGURE 6 is a cross sectional view taken substantially on theline l6 6 of FIGURE 5.

FIGURE l shows `awindow 1 adapted to slide on twogrooves 2 provided on a iixed |frame 3, as represented in phantom lines. Said frame may be the door of a vehicle for instance. At the lower portion of thewindow 1, a body 4 is secured to receive the descending and raising movements of theWindow 1 which are communicated to lUnited States Patent O 3,444,649 Patented May 20, 1969 said body by means of abearing member 5. The end portions of the latter `are provided withrollers 9Iand 10 adapted to transversally roll in agroove 11 provided on the body 4 and beneath the latter respectively.

Acable 13, disposed in a plane substantially parallel to the plane of the window, transmits the stresses of acontrol device 12 to thebearing member 5. Thecable 13 is rigidly -connected to the latter by means of asleeve 15 set on the cable and wedged between the t-wo ears of aU-shaped member 16 integral -with thebearing member 5. Thecable 13 is stretched between two supportingmembers 7 and 8 fixed to the frame, on the portion of said cable substantially parallel to thegrooves 2. The upper and lower portions (FIG. l) of thecable 13 are each guided in metallic tubing means 17land 18 or in rigid or semi-rigid plastic tubings preferentially which take abutment on the supportingmembers 7 and 8. The cable is similar to an endless cable working between thecontrol member 12 and thebearing member 5. The two end portions of the cable are secured to thecontrol member 12.

A guidingstem 6 is integral with the supportingmembers 7 and 8, by welding for instance. Supportingmembers 7 yand 8 are lixed to the intern-a1 wall of the fixed frame by means ofbolts 21 and 22 (FIGURE 2). Thestem 6 is provided to guide the bearingmember 5 through the U-shapedmember 16 integral with thebearing member 5 and comprising two ear-s which will be advantageously `as spaced as possible to insure a good guiding of the bearingmember 5 on the stem `6. A lack of parallelism between the latter and thegrooves 2 is absorbed by therollers 9 and 10 which have a transversal play.

Thus, a rigorous parallelism between thestem 6 and thegrooves 2 is not requested. Furthermore, therollers 9 and 10 are free perpendicularly with respect to the window when considering FIGURE 1. One of the two rollers,roller 10 for instance, could insure only the raising of the window Iand not the descending -so as to allow the free actuation of a self-clamping device 23 which prevents the window from lowering, by a `direct action on the latter.

Another feature of the invention is the guiding of the bearing member by a stem integral with the frame. This embodiment allows to raise the window without any risk of jamming of the latter in its grooves even if one of them is shortened due to the fact that the window is broken in two parts.

Raising and descending movements of the window could be manually effected or by means of an auxiliary power source, electric or pneumatic for instance.

To raise the window, the resultant of the Weight of the latter and different parasit frictions must be overcome. A reducing gear must be advantageously provided between the cable and the handle of the crank.

Referring to FIGURE 3, a manually control device is illustrated, wherein the reduction ratio of the stress is merely achieved by means of asmall diameter drum 26 around which is wound alternatively each end portion of the cable, in one direction, then in the other direction, within an helicoidal groove provided on the periphery of the drum to guidecable 13. The end portions ofcable 13 pass through diametral slots bored in thedrum 26.Cable 13 is stretched and each of its end portions is secured by means of aworm 27. Asplined axle 28 transmits the rotation of acrank 12 to thedrum 26. The supporting member 24 of thedrum 26 can be fixed to theframe 3 by means of one set screw only as in 25 and serves as an abutment member fortubings 17 and 18.

A pulley comprising two toric grooves of relatively great diameter can be used instead of the small diameter drum, to maintain a constant direction of each end portion of the cable. Said pulley must be able to develop the raising of the window by one revolution. It is thus necessary to associate a reduction ratio device. On FIGURE 1,such device 20 is of the type having epicycloidal gearings cornprising a sun gear, three planet gears and a rim forming a pulley having two grooves.

An auxiliary power source may be used to raise or lower thewindow 1. An electric power source may also be used, the latter controlling a motor which controls an epicycloidal gearing by means of a resilient driving device and a worm and pinion gearing.

The actuation of the device, according to the invention, is as described hereinafter: When thecrank 12 is turned in one direction, thecable 13 rigidly xed to thebearing member 5, raises the window through therollers 9 and 10, the guiding being insured by means of thestem 6. During this step, the portion ofcable 13 passing through thetubing 17 is submitted to tensile stress, while the portion passing through thetubing 18 is submitted to compression stress. Should thecrank 12 be turned in the reverse direction, the window lowers, the portions of thecable 13 submitted to tensile and compression stresses being inverted.

Each of the portions of the cable being alternatively submitted to tensile stress, spreadingmeans 19 are inserted in eachtubing 17 and 18. The spreading means as illustrated by FIGURE 4 are comprised of twosleeves 45 surrounding thetubings 17 and 18. A preloaded spring 44 located in the cavity of thesleeves 45, is adapted to spread away these latter with respect to one another, to stretch the cable.

The portion of the cable transmitting the movement to the window to raise or to lower the latter, being ever submitted to tensile stress, it is not necessary to associate to the device a return spring, stretched by the descending movement, to help the raising of the window.

Another embodiment of the window raising device, according to the invention, is illustrated by FIGURE and has the advantage to provide a better protection of the cable. The portion ofcable 13 outwardly of the tubings 17-18 of the embodiment of FIGURE 1, is represented in FIGURE 5 byreference numeral 113. This portion passes through a guidingpipe 106. The latter should be advantageously longitudinally split to permit the passage of a fixation means between thecable 113 and a bearingmember 105 which transmits the raising and descending movements to the window. The guiding of the bearingmember 105 is insured by means of a guidingmember 116, formed in a plastic material preferentially. As it can be seen in FIGURE 6, thesplit pipe 106 passes through the guidingmember 116. The driving is eifected towards the two directions by means of twoprojections 150 which penetrate into thesplit pipe 106 and are respectively drawn by the end portions of thecable 113 on which stop means 115 are crimped. The two end portions of the cable are introduced through a slot 151 provided in the guidingmember 116. This embodiment, allows to the tensile stresses on the cable to exert along the axis of the guidingpipe 106, and therefore suppresses the resulting torque of the overhang of the stern 6 with respect to thecable 13 in the embodiment accordingly to FIGURE l.

Thesplit guiding pipe 106 is fixed at its end portions by means of supportingmembers 107, 108, the latter being xed to the frame by means of worms (not shown). The supportingmembers 107 and 108 which serve also as abutment members can advantageously be formed in a plastic material, so as to lower the price of the device. The window raising device according to the invention needs only a single pulley to insure the control of the device, and consists of a set of unitary assembly which can be xed to the frame by means of few worms.

It will be apparent to those skilled in the art that the invention is susceptible of a variety of changes and modifications without departing from the scope and spirit of the appended claim.

We claim:

1. A window raising device operative to move a window slidably mounted on two parallel grooves provided on a lixed frame, said device comprising:

a guided closed loop cable capable of moving a bearing member operatively connected to the window, said bearing engaging the lower edge of the window and having a guiding member between the free ends of a C-shaped tubing means affixed to the frame, said C- shaped tubing means having at least one sectioned portion between the ends of` which spreading means are inserted to spread away said ends with respect to one another to increase tension of the cable, said spreading means being comprised of a preloaded compression spring slipped on the cable and inserted into two sleeves of the spreading means fitted on the adjacent ends of said tubings; and

a control device connected to said cable, characterized in that said closed loop cable is located in said C- shaped tubing means with the free portion of said cable located between the free ends of said C-shaped tubing means being substantially parallel to said grooves and operatively secured to said bearing means.

References Cited UNITED STATES PATENTS 1,827,746 10/1931 Hansen 49-352 X 3,014,716 12/1961 Hitzelberger 49-352 X 3,235,248 2/1966 Golde 49-352 X 3,280,509 10/1966 Werner 49 352 3,281,991 11/1966 Colell 49-352 FOREIGN PATENTS 979,815 l/l965 Great Britain. 983,444 2/ 1965 Great Britain.

REINALDO P. MACHADO, Primary Examiner. PHILIP C. KANNAN, Assistant Examiner.

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