DE8910088U1 - Openable roof panel - Google Patents

Description

Schürmann, Erich, Dr.-Ing., Wittenberg 1, 4415 Sendenhorst

"Openable roof panel"

The innovation refers to an extendable roof panel according to the generic term of the main application.

c he s,

Removable roof panels of the generic type are known, whereby these roof panels are ^convex towards the outside. In order to achieve a uniform and tight fit of the roof panel to the inner wall of the roof frame, it is required that the locking device for the Roof pane is operated with large closing forces. The closing forces must be large enough that the roof pane deforms elastically in its closed position, flattens and presses with its edges against the inside of the roof frame.

It was considered disadvantageous that such closing forces had to be applied and the innovation is based on the task of opening and closing To create a locking device with which a problem-free closing of the exposed roof pane is possible, whereby the forces to be applied in the final phase of the closing process are essentially no greater than those in the initial phase of the Forces to be applied to close the roof pane are.

This task underlying the innovation is

solved by the doctrine of the main claim.

Advantageous embodiments are explained in the subclaims.

In other words, a deployment and locking device is proposed, which is located centrally on the rear side as seen in the direction of travel of the vehicle.

the outer side of the roof pane on the one hand and on the other hand is supported by the roof frame located there. The opening and closing device consists of an inner coil spring, which strives to push the roof pane outwards on its own

to press. The coil spring is held in the retracted position or in the partially retracted position by a slider that rests on the top of the coil spring coils and which is rotatably coupled to an operating handle

If the operating handle is now turned,

the slider on the top of the coils of the helical spring rotates and pulls this helical spring down into the rest position for the roof pane. In this case, the greatest distance of the

A constant force must be applied to the coil spring, which depends on the resistance that the coil spring offers to the retraction movement of the slide and which is essentially determined by the pitch of the coil spring and the completed

spring travel is determined.

In the upper part of the coil spring, the winding is less steep than in the rest of the area and therefore less force is required to pull in the coil spring, at the same time

·

- 2a -

but the additional available

standing force capable of holding the curved disk;

now flatten and thus with their edge areas C

chen to the roof edge to seal it. ·

On the last path of the rotation of the slide ^f

(See original documents pages 3 to 5)

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This results in a very large transmission ratio with the positive consequence that at the end of the closing movement a very large closing force is achieved with little effort.
5

An example of the innovation is explained below using the drawings. The drawings show

Fig. 1 diagrammatic but relatively schematic

a flared roof panel and in Fig. 2 on a larger scale the actual opening and locking device.

The drawings show a roof pane 1 which can be made of glass, plastic or the like and which can be transparent or opaque. This roof pane 1 is held on a roof frame which can be inserted in a sealed manner into a corresponding opening in the actual vehicle roof. The roof frame 4 creates a roof opening 3 which is to be closed by the roof pane 1.

The actual roof frame 4 has a front longitudinal edge 5 and a rear longitudinal edge 6 as well as two transverse edges 7 and 8. The roof panel 1 is fixed in the front area at the longitudinal edge 5 by corresponding hinge devices , while an opening and closing device 2 engages the rear longitudinal edge 6.

The design of the opening and closing device 2 is more clearly shown in Fig. 2. From Fig. a coil spring 9 can be seen, the lower

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End is connected in a corresponding manner to the rear longitudinal edge 6 of the roof frame 4, while the upper end is attached to the roof pane 1 accordingly. From this it can be seen that the coil spring 9 strives to guide the actual roof pane 1 into the open position. In the center of the coil spring 9 and in the lower area of the same, a rotating sleeve 15 is provided, which is provided with a

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further accommodates a slider 11, which has two guides 12 and 15, which rest on the top of the winding 10 of the coil spring 9. If the operating handle 16 is now turned, the slider 11 is guided downwards or upwards on the windings 10 of the coil spring 9. If the operating handle is turned so that the slider 11 moves upwards, the slider 11 forces the windings 10 downwards under its guides 12 and 14 and the actual roof panel is thereby closed. In the upper area of the coil spring 9, the windings 10 are flatter than in the rest.

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that the resistance to be overcome by the slide is now lower on the one hand because the gradient is smaller, and on the other hand the available closing force can now be used to deform the convexly curved roof panel in such a way that it is pressed into the roof frame 4 in a sealing manner .

From Fig. 2 it is also clear that the slide 11 is arranged in the rotary sleeve 15 in a vertical slot 18 in which the slide is mounted so that it can move up and down. In this case, the slide - what cannot be seen from the drawing - after

is loaded from below by a return spring, so that it basically strives to rest on the underside of the vertical slot 18. Due to the lifting force, which the windings 10 exert on the underside of the guide 12 and 14, the slide 11 is guided into the upper position shown in Fig. 2. If the slide now reaches the area of the lowest winding, no more pressure is exerted on the underside of the slide pr«; 11 h7w. dip guides 12 and 14 exerted and the return spring (not shown in the drawing) moves the slide 11 downwards into the vertical slot. This now makes it possible for one of the two guides 12 to come into contact with a stop 17, which

Rotational movement not only of the slide, but also

the rotating sleeve 15 and the operating handle 16. This safely prevents over-tightening downwards.

Instead of the one shown in the drawing,

a coil spring 9 made of round spring steel, a spring steel can also be used which is designed as flat steel, i.e. the actual coil spring 9 consists of turns of transverse cut rectangular material.

Claims (9)

PATENT ATTORNEY ····*·· '..·*..* *#ö^yxc _H s4« . D 4400 MONSTER 22.08.8$. DIPL.-INQ. H.-Q. HABBEL at the cannon square n r _: AT THE EUROPEAN PATENT OFFICE REPRESENTATIVE TELEPHONE (OtSII 5110*7 $ MYFILE: (please ««just) S180/12765 X/Sc TELEX If£tf7lufc4 FAX (OiSIJ Illtt» Schürmann, Erich, Dr.-Ing., Wittenberg 1, Sendenhorst "Openable roof panel" Protection claims: 1. Openable roof window for vehicles which are hinged at one of their longitudinal edges (5) to a roof frame (4) that can be fixed to the vehicle roof and is equipped with a hinged and locking device (2) that engages its other longitudinal edge (6), whereby the roof panel (1) is convexly protruding outwards is curved, characterized by a helical spring (9) as an opening and closing device (2) and a slide (11) supported on the upper side on the windings (10), which in the lower part and inside the Coil spring (9) and a Operating handle (16) can be rotated 1st. 2. Openable roof panel according to claim 1, characterized in that the slider (U) is designed as a latch and is supported by at least one elaborate guide on the upper side of the winding (10). 3. Openable roof panel according to claim 1, characterized in that the slide (11) is designed as a latch and can be opened by means of two oppositely located guides {12» 14} .on the upper side U of the mindung (10). 4. Äi'iSiä &iacgr; 1 over the axle section after?· ain-em cross several of the preceding claims?., thereby characterized in that the slide (11) in a rotating sleeve (15) to which the operating handle (16) is connected and is mounted so that it can move up and down. 5. Openable roof panel according to one or more of the preceding claims, characterized in that one or more of the uppermost turns (10) of the helical spring (9) are flatter in their pitch than the other turns. 6. Openable roof panel according to one or more of the preceding claims, characterized by a stop (17) for the slide (11) which projects into the rotational path of the slide (11) in the region of the lowest turn and limits the rotational movement of the slide (11). 7. Openable roof panel according to one or more of the preceding claims, characterized by a return spring, against the force of which the upward movement of the slide (U) 1n of the rotary sleeve (15) takes place. !&bull;&bull;til ·· · « ·· «· 8. Openable roof panel according to one or more of the preceding claims, characterized in that the helical spring (9) consists of spring wire with a cross-section. 9. An extendable turntable according to one or more of the preceding claims 1 to 7, characterized in that the screw threads (9) consist of turns which are arranged transversely cross-section made of rectangular spring wire qeiii^liit.