DE2906424A1 - IMPROVEMENTS CONCERNING DEVICES FOR BALANCING THE WINDOW WINDOW ON DROP WINDOWS, ESPECIALLY FOR VEHICLES - Google Patents

Description

290642 /,

Applicant; Terenzio SESSA

VARESE (Italy)

"Improvements to Balancing Devices the target on drop windows, especially for vehicles "

DESCRIPTION

The present invention relates to some improvements in devices for balancing the wind-up pulley on drop windows, especially for vehicles such as railway vehicles, Motor vehicles and the like.

Windows of this type comprise a rectangular frame in which a stationary window pane is mounted, which in the

909835/07 01

- 29Q6A24

generally the lower half of the window takes up, and a vertically movable pull-up disc is mounted in such a way that air can also enter through the oboro window half is permitted.

One of the most significant technical problems that the Building. Such windows are to be solved, is that of balancing the dead weight of the movable pane.

A gear must be assigned to the movable disc that is able to compensate for its own weight such that it is the user with minimal effort can have and lower and such that their stable positioning is granted in the desired location.

Various devices have been proposed for this purpose which are well known to those skilled in the art and the most widely used are of three types, with pinion and rack, with gear and chain, and with rope.

The balancing systems with pinion and rack and with gear and chain have the advantage of being completely enclosed of the window to find space, thus allowing the production of a one-block window that is facing the Gaenze im ¥ Erk and which is then mounted in a corresponding recess in the vehicle.

On the other hand, these systems have the disadvantage that, in addition to the balancing spring, they are used to balance the movable ones Disc also require a device for locking the same in the desired position.

Windows of this type are, for example, in the Italian

90Ö83S / 0701

see Patent Nos. 494,3k $ and 1,001,683 described.

The compensation systems with pinion and rack have forner the disadvantage that the effect of the short term To feel the atmosphere, of the dust, etc., which lead to chiselling and in general to difficulties and noise during handling can lead in such a way that the user must exert a considerable amount of force.

The balancing systems with rope have the advantage of being very gentle and quiet in handling and the advantage of no auxiliary device to lock the pull-up disc to need; namely, they dread that Principle of adjusting the load transferred from the moving disc to the balancing spring by changing at every moment by means of an eccentric the distance of the point at which the load acts on the spring is changed.

However, these cable systems have the disadvantage of being bulky and cumbersome to assemble because the gearbox is in a box is included which is separately mounted inside the vehicle above the window. In other words, as they were previously designed, the compensation systems with rope prohibit the advantageous construction of a one-block window, however, as is possible with the other systems mentioned above.

It is a general object of the present invention to provide a drop window with a movable pull-down pane which is provided with a balancing system that has the advantages of the known systems and their disadvantages

909835/0701

avoid,

With regard to this Ziol ₉ , it was thought according to the invention to create a window with a generally rectangular frame of the type “which comprises a stationary disk and a movable pull-up disk, on which a constant force acts at all times by means of a system of cables with the movable Sheave in ¥ ¥ irkverbinden compensating springι characterized in that said system of ropes comprises a pair of pulleys mounted along the vertical sides of the rectangular window frame, the rope of each pulley having one end attached to the sides of the movable pulley and the opposite end j extending along a conical Schraubenlinionbahn winds and unwinds, which is provided at the end of a shaft _S which is rotatable in the upper transverse balcony of the stationary disc and cooperates with the · said compensating spring.

Other features and advantages of the subject invention will become more apparent from a review of the following exemplary description iintor reference to the accompanying drawings illuminate? in these show:

Figure 1 is a front elevational view of one of the invention window to use j

Fxguz * 2 a detail partially in section _{s of} the window of Figure 1 % . -.

Figux "3 shows a section along the section line III-IJI of the F-igra * 21

S08638 / 0701

Figure *! ■ a section along the line IV-IV of the Figure 2j

Figure 5 is a section along the section line V-V of Figure 2j

Figure 6 is a section along the section line VI-VI of Figure 2;

Figure 7 is a section along the section line VII-VII of the Figure 2ι

Figure 8 is a longitudinal section showing the compensating device the moving disk;

FIG. 9 shows a detail in a view straight arrow F of the figure 8th;

Figure 10 is a view according to arrow F, the figure 9 »

Figure 11 is a detail in section showing the compensating device represents the moving disc, with a mechanism to change the load on the balancing spring; and

FIG. 12 shows a section along the section line XII-XII in FIG. 11.

With reference to FIG. 1 of the drawings, the case window in question consists structurally of a rectangular frame 10 in which a stationary glass pane 11 and a movable glass slide 12 are mounted. Figure 1 is a view of the window from the interior of a room where the movable pane 12 is shown half in the fully raised position and half in the fully lowered position.

909835/0701

The rectangular frame 10 can be of any conventional type, for example formed from two half-frames 13 Ik, an upper and a lower one, which are connected to one another by a connecting element 15 (FIGS. 2, 5, 6 and 7). The half coffins 13, Ik consist of channel sections, which are adapted to receive _f the fixed glass panel and the movable panel in a known per se, and as shown in the drawings.

According to the present invention, the shift the movable glass pane 12 balanced between the positions open and closed by means of a cable device, which consists of a pair of pulleys 16 which are attached to the vertical sides of the frame 10 are mounted.

Each pulley includes a pulley I7 that is loose sits on a bracket 18, the top of the frame half 13 is fixed in such a way that its position can be adjusted by screws I9 which pass through elongated holes 10 which are cut out in the bracket 18 itself.

In this way it is possible to see the upper edge of the movable Glass pane 12 to align with the relevant stop on the upper Zargenhaelf te 13, even when on the vehicle mounted window in such a way that a completely tight seal is achieved.

The rope 21 is wound around the pulley 17, one end of which is fastened at 22 to the base of the vertical side of the movable glass pane 12 (FIG. 2) and the opposite end of which is attached to a conical one at 23 (FIG. 10)

909835/0701

Drum 2k is attached, which has a schraubonfoermige throat 2j in which this rope 21 is wound. Referring to FIGS. 3, 8, 9, 10, 11 and 12 it can be seen how the drums 2k are fastened to the ends of a shaft 26 which is rotatably mounted inside the upper crossbeam 27 of the stationary glass pane 11. A spring 28, which is able to compensate for the inherent gain of the movable glass pane 12, interacts with the shaft 26. The spring 28 (FIG. 8) has one end bound to a conical element 29 which is fixedly connected to the shaft 26 , and the opposite end is bound to a conical element 30 which is fixedly connected to the crossbeam 27. The loading of the spring 2S may J3 by in Figures 11, 12 transmission shown Screw - gear 3 ^ be changed.

From what has been said above, it is clear how the bulge of the movable disc 12 is achieved in each of its positions by changing the point of application of the pulling of the cables 21 at any point in time by means of the conical drums 2k in such a way that the ratio between that on the spring 28 applied force couple and the arm is kept constant, so:

where: T = constant tension of the ropes 21;

909835/0701

-sf- 2.906 A 24

C = pair of forces applied to spring 28; b = coil radius of the ropes,

The consequence that on the movable window pane in a constant force attacked all of their positions

In this way, a drop window with a pull-out glass pane is created, which by means of a cable compensation system is deployed, with this system for Gaenze in the framing is housed, so that it is the box of a one-block window with all the resulting advantages "

It should also be noted that the pulley device is completely hidden from view in every position of the movable window pane. The ropes 21 namely slide in the relevant recordings, each of which is given by a channel j which is recessed in the ΥβΓοχηαΐΐη ^ ββ ^ ίθοΙί: which is closed in the upper window half by a cover 36. Further, the pulleys are concealed by a ρer! Metric housing 31 which is mounted on the inner part of the window frame (Figure 3), with 3 ^2, however, the opening is denoted _s is installed in.der the window.

A. Another advantage of the compensation device according to Invention lies in the fact that it is completely nested in the window istj so that it is also in front of the atmospheres at the same time well protected dsfc.

Although a possible embodiment of the invention is described and has been shown, it will be evident that at. the same variants and changes can be made without what is defined in the claims below To leave the protected area of the invention «,

909835/0701

Claims (1)

Applicant Terenzio SESSA UAEBSE (Italy) "Improvements to Balancing Devices the pull-up window on drop windows, especially for vehicles " PATE H CLAIMS \ Fall window with generally rectangular frame and with a stationary and a movable or pull-out window pane, on which the latter a constant force is applied at every moment by means of a compensating spring, which is connected to the pull-out pane via a system of ropes Operative connection is 5 characterized in that the said system of ropes includes a pair of pulleys, each on the vertical sides of the rectangular window frame are mounted, with the rope of each pulley attached at one end to the sides of the winding pulley is and with the other end along a conical screw shape Winding and unwinding the web, which is provided at the end of a skin, which is inside the upper crossbeam the stationary window pane is rotatable and with which the said compensating spring cooperates, 2 »Window according to claim 1, characterized in that said helical path on a conical one on each End of said shaft attached drum is provided. 3. Window according to claim 1, characterized in that said balancing spring is coaxial on said shaft is mounted, bound with its one end to a first conical element firmly connected to the shaft and with the opposite end to a second conical one connected to said upper transom of the fixed window pane Element bound. k. Window according to claim 3 »characterized in that said second conical element is adjustable in its angular position with respect to said shaft in order to vary the load of the spring. 5. Window according to claim k, characterized in that the ¥ inkeleinstteilung of said second conical element by means of a gear with screw and gear bewerkstel- 9835/0701 is ligt. ,, 6 «Window according to claim 1 _}, characterized in that the pulleys are each mounted adjustable in their position along the said vertical sides of the window frame» 909835/0701