DE19754557C1 - Sprung roller shutter for building - Google Patents

Abstract

The shutter has a shaft (1) with a bearing shaft (3) at each end. Each bearing shaft is mounted in a guide bearing support (5) with a preset angular play and axial play. Each support can be formed as a cardan joint.

Description

The invention is concerned with a spring roller blind, in particular with a cover spring roller blind, with a roller shaft for a winding tarpaulin which can be wound thereon, with at least one Bearing shaft inside the roller blind shaft, and with one interposed between roller blind shaft and bearing shaft Tensioning device, the winding tarpaulin from the roller blind shaft against the force of the tensioning device while storing Clamping energy can be developed in the clamping device and under Resetting the tensioning device and taking advantage of the ge stored tension energy can be wound on the roller blind shaft is. - Under a wrap tarp is within the scope of the invention to understand any surface structure that can be wound up. Examples of this are plastic tarpaulins, flies grids, fabric sheets but also roller shutter-like slat sheets made of plastic or metal slats. Springrollo means in Within the scope of the invention, a winding cover is generally possible direction, which after unwinding in general to automatic winding is able.

A spring roller blind, in this case a fly screen roller blind, the one Construction described above is by the German Utility model DE 94 13 520 U1 become known. This Spring roller blind is arranged in a roller shutter box and will ge with an end strip in lateral guide profiles leads. In this way, when used in a Roller shutter box reaches an insect-tight cover become.  

A fly screen roller blind or a spring roller blind at the beginning described type is further by the German patent publication DE 39 36 343 C2 become known. In detail here an insect screen roller grille device for insects tight, breathable cover of a window or Door opening described.

In addition, one knows from US 2 105 469 Spring roller blind, which is only pulled briefly to roll it up got to.

Otherwise there are spring blinds or roll-up covers directions from the embodiment described above known in practice and are used, for example, in vehicle construction used. They serve window openings against sun irradiation or to cover the daylight. This is be especially required for trucks (trucks), namely around for example, undisturbed sleep for the truck driver - also during the day. In any case, there is such cover devices the constant problem that this on the one hand are relatively expensive to manufacture others partly assembly and functional reliability difficult designed. The latter can be largely attributed to the fact that the inner lining in a truck (or car) Movements while driving - or out called by temperature effects - executes, so that in total not inclined canting of the built-in covering device can be excluded. Even a complete one Inoperability is to be feared.  

From a manufacturing point of view it is striking that the most known cover devices extremely expensive are executed because they are made up of many different individual parts are built that are not only costly Production, but also when assembling one require a set approach and many different ones Make assembly steps necessary. - Here's where Invention.

The invention is based on the technical problem Springrollo the construction described above so on form that overall manufacturing and assembly simplified are and at the same time reduce the risk of malfunctions sets is.

To achieve this object, the invention proposes generic spring roller blind, in particular a cover springrollo that the bearing shaft in both sides of the Roller shaft arranged spherical bearing devices with pre given angular play and axial play of the roller blind shaft is. The respective spherical bearing device is concerned preferably a universal joint with a predetermined angle game, with pivot pins arranged in a bearing eye and the hinge ring surrounding the hinge pin in the bearing eye. The bearing shaft can essentially consist of two formed bearing shaft journals, each one hand attached to the associated spherical bearing device closed and on the other hand in one in the roller blind set bearing block are stored. Each camp shows shaft journal preferred for adjusting the axial play of the Roller blind shaft in a circular recess at the front of the  Bearing blocks for axial movement of the roller blind on the Bearing pin engaging stop lug. At the instep device is generally an im Area of a spherical bearing device in the role ordered torsion spring, which with one end to the a bearing shaft journal is connected and with her other end by means of a spring arm in a longitudinal slot of the roller blind shaft engages. Finally, the Roller blind shaft is preferred in the area of the other spherical plain bearings direction - opposite the clamping device - on integrated friction-damped locking mechanism to hold on and braked winding of the unwound tarpaulin.

These measures of the invention are first of all manufacturing simplified. Because the bearing shaft consists in essentially from two identical bearing journals, so that material savings can be recorded. Furthermore  incorrect installation is avoided because the swapping of the two bearing journal is unproblematic. Come in addition, that the tensioning device designed as a torsion spring inserted into the roller blind shaft with a longitudinal slot and can be performed relatively short. This also leads to Material savings and easier assembly. this applies also for the measure according to the invention, the friction to integrate damped locking into the roller blind shaft. Here a particularly compact structure is achieved by.

It is essential that the Cover device according to the invention flexible to difference Liche installation conditions can be adjusted so that functional interference can be excluded. This is ensured by be especially the bearing with given angular and axial game of roller blind. - In fact, not only master differently designed installation locations, because Movements of the interior lining due to twisting of the Motor vehicle bodywork or temperature effects can be problem going to be picked up. The gimbal position ensures this tion, which easily causes angular misalignment of the roller blind shaft records. The approved axial play also enables compensation due to temperature and / or torsion Width changes of the respective attachment points for the Spherical bearing devices.

Anyway, malfunctions are excluded altogether, which with a constructionally simple construction and easy assembly is achieved. Here are the main ones Lichen advantages of the invention to see.  

Further features essential to the invention are as follows listed. So the spherical bearing device is mainly in longitudinal section Ω-shaped with central bearing eye and edge connected holding flanges. This The procedure enables a particularly homogeneous force through the holding flanges. Most of it is Bearing eye as a circular ring with a circular section cross-section formed surface and central pivot pin, the Articulated ring of the universal joint as a concentric circular ring with adapted to the circular section cross-sectional area Circular section cross-sectional area same arc radius and predetermined arc angle is executed. This leaves the articulated ring is secure at the same time and with a predeterminable Lead angular play in the bearing eye. This will be explained in detail Explanation of the figure description.

In addition, there is usually one on the pivot pin the circular eye clamp receiving the bearing eye in one piece shaped. Circular arc clamp and joint pin can in total form together with a plastic injection molded part. The spherical bearings device can have an angular play of approx. 60 ° horizontal swiveling angle and in verti cal plane an angular play of approx. 50 ° ver tical pivot angle. This will make an overall sufficient angular mobility or sufficient Angular play achieved. Because now the roller blind shaft can do that easily swipe over the mentioned swivel angle, whereby of course also inclinations, d. H. Pan angle in a diagonally arranged plane through the front standing areas defined within the scope of the invention possible are.  

The torsion spring is preferably in one on a siche ring of the bearing shaft journal led on the output side. In this way, the spring Move the sleeve axially in the roller blind shaft. Also cares the spring sleeve for the circumferential guidance of the torsion feather, d. H. the torsion spring is not on the bearing shaft or the bearing shaft journal held, like this the state of the art is common. Consequently, a through the roller blind in its entire length outgoing bearing shaft are at this point rather the reali already described bearing journal siert. Besides the fact that this is a material savings, weight advantages can also be achieved, which is of increasing importance, particularly in motor vehicle construction tung is. Because the spring sleeve can be made as a simple sleeve In any case, plastic or aluminum is made cheaper and lighter than a continuous bearing shaft.

The torsion spring preferably points in the connection area to the Bearing shaft journal one on the bearing shaft journal diameter adjusted spring diameter and encloses it, d. H. the bearing journal in this area (i.e. the Connection area). The spring diameter increases in a transition area to one on the spring sleeves Adjusted inner diameter value, the bearing shaft journal only extends to the connection area. Once the torsion spring has a larger spring diameter as the bearing shaft journal has diameter, follows Lich the bearing shafts no longer required for guidance tap. Rather, this leadership will follow the  Transition area taken over by the spring sleeve, against which lies around the torsion spring.

The locking mechanism mainly points to a fuse ring of the other shaft bearing journal, with the Roller shutter shaft connected ratchet housing with inside on the bottom of the locking mechanism, the coupling being connected to the shaft bearing journal and can be unlocked against the force of a compression spring. Of the Circlip of the other shaft bearing journal ensures here - as in the case of the spring sleeve - for the fact that axial displacement against the roller blind shaft, just because the entire ratchet housing in the blind shaft can be moved axially. Otherwise, is through the connection of the clutch with the bearing journal it is enough that the bearing shaft journal - clutch lung - floor of the ratchet housing - roller blind the roller blind shaft is held with the clutch "engaged", d. H. winding of the tarpaulin does not take place. Should this winding happen, the clutch must be unlocked against the force of the compression spring.

In this context, it is further provided that a Ring encompassing the bearing shaft journal in the locking housing friction damper is realized, which in one by the compression spring limited damper housing part of the locking mechanism Housing is arranged, the ring friction damper at unlocked clutch and compressed compression spring as well thereby reduced damper housing part with predeterminable Frictional force applied to the bearing shaft journal. By the front The measure mentioned will be a low-friction winding  the winding tarpaulin reached. Because after unlocking the clutch is the locking housing in principle free, d. H. no more connected to the bearing shaft journal so that it - driven through the torsion spring - together with the roller blind shaft can rotate. This rotation or the winding speed speed is now limited by the fact that when the clutch is unlocked the compression spring is compressed and thereby the Damper housing part undergoes a reduction. this leads to to the fact that the ring located in the damper housing part friction damper is compressed and increasingly around or places it on the bearing shaft journal and this with, as it were Predeterminable friction force brakes with respect to its rotation. In any case, this can be a friction overall achieve damped coiling, especially that at Spring blinds usual snap back the tarpaulin at Avoid winding up reliably. Operator injuries person or damage to adjacent components by the In this way, tarpaulins are excluded.

In the following, the invention is based on only one Exemplary embodiment illustrating the drawing tert; show it:

Fig. 1 is a plan view of the inventive winding bare covering, partly in section,

Fig. 2 shows an enlarged detail from Fig. 1 in the region of the right hinge bearing means,

Fig. 3 shows an enlarged detail from Fig. 1 in the region of the left hinge bearing means,

Fig. 4 shows a section through a pivot bearing means along the lines BB in Fig. 2,

Fig. 5 is an end view in direction A of FIG. 1 and

Fig. 6 shows a section through the roller blind shaft.

In the figures, a cover device that can be wound up is shown, in the exemplary embodiment a cover spring roller blind. In its basic structure, this consists of a roller blind shaft 1 for a winding tarpaulin 2 that can be wound thereon and at least one bearing shaft 3 inside the roller blind shaft 1 and finally a tensioning device 4 interposed between roller blind shaft 1 and bearing shaft 3 . The winding tarpaulin 2 is unwound bar against the force of the tensioning device 4 with storage of tensioning energy in the tensioning device 4 . By resetting the tensioning device 4 and using the stored tensioning energy, the winding plane 2 can be rewound. The covering device shown is supported by means of the bearing shaft 3 in spherical bearing devices 5 a, 5 b arranged on both sides of the roller blind shaft 1 with predetermined angular play (α, β) and axial play (S) of the roller blind shaft 1 .

The respective joint bearing devices 5 a, 5 b are formed as a universal joint with a predetermined angular play α, β with a pivot pin 7 arranged in a bearing eye 6 and the joint pin 7 in the bearing eye 6 surrounding joint ring 8 . As evidenced by FIG. 4, the articular bearing Rich is processing executed shaped Ω-6 and with a central bearing eye peripherally connected retaining flanges 9 5 in longitudinal section. The holding flanges 9 on both sides have openings 10 which are used to hold fastening elements, eg. B. screws are set up. The respective upper opening 10 a is circular, while the lower opening 10 b has an oval cross section in order to be able to pivot the joint bearing device 5 a, 5 b back and forth overall. This is indicated by an arrow 11 .

As shown in FIG. 4, the bearing eye 6 is designed as a circular ring with a circular section cross-sectional area 12 and a central pivot pin 7 . The joint ring 8 is designed as a conical circular ring with the circular section cross-sectional area 12 adapted circular section cross-sectional area 13 of the same arc radius R and a predetermined arc angle γ.

The hinge pin 7 is formed on a circular arch clamp 14 receiving the bearing eye 6 , specifically in the region of the highest point of this circular arch clamp 14 . Circular arc clamp 14 and pivot pin 7 therefore form a one-piece component, for example an injection molded part. The spherical bearing device 5 a, 5 b has in the horizontal plane H an angular play of approximately 60 ° horizontal swivel angle α and in the vertical plane an angular play of approximately 50 ° vertical swivel angle β. The vertical pivot angle β - because the spherical bearing device 5 a, 5 b in the area of the bearing eye 6 is symmetrical overall - in the center position of the joint ring 8, as it were, from the two half angles β / 2 on both sides of the angle γ according to FIG. 4. Depending on the inclination angle of the articulated ring 8 , vertical pivoting angles β in the range from 0 ° to 50 ° can thus be covered. This makes the comparison of the solid center position with the two extreme positions (dash-dotted and dashed lines) in Fig. 4 immediately clear.

The support shaft 3 essentially consists of two identically constructed bearing shaft journal 3 a, 3 b. These two bearing shaft journals 3 a, 3 b are each connected on the one hand to the associated joint bearing device 5 a, 5 b and on the other hand mounted in a bracket 15 inserted into the roller blind shaft 1 . This bracket 15 is a plug-in into the roller blind shaft 1 plastic bushing with a hollow bore for the respective bearing shaft journal 3 a, 3 b. Also, the respective bearing shaft journals 3 a, 3 b is drilled hollow, as discussed below. To A the axial clearance S position of the roller blind shaft 1, each bearing journal 3 a, 3 b an end face in an annular recess 16 of the bearing block 15 in axial displacement of the roller blind shaft 1 on the bearing shaft journals 3 a, 3 b engaging stop lug 17. In addition, each bearing shaft journal 3 a, 3 b has a stop ring 18 , which axially shifts the components against each other within the roller blind shaft 1 . These components are, on the one hand, a spring sleeve 19 (cf. FIG. 2) and, on the other hand, a locking housing 20 (cf. FIG. 3).

The tensioning device 4 is, according to the exemplary embodiment, a torsion spring 4 arranged in the region of a joint bearing device 5 a in the roller blind shaft 1 . This torsion spring 4 is connected with its one end to a bearing shaft journals 3a and guided with its other end by means of a spring arm 21 in a longitudinal slot 22 of the roller blind shaft engaging 1 (see. Fig. 6). To insert the torsion spring 4 in the roller blind shaft 1 , it is consequently only necessary to insert this spring arm 21 into the longitudinal slot 22 . Accordingly, the spring arm 21 ensures a endseiti conditions hold the torsion spring 4 against torsion. The other fixed point for the torsion spring 4 is - as already leads out - formed by the bearing journal 3 a. The torsion spring 4 is guided in the to the retaining ring 18 of the bearing shaft journal 3 a spring sleeve 19 adjacent circumference side.

In the connection area AB (see FIG. 2) on the bearing shafts pin 3 a, the torsion spring 4 has a spring pin diameter adapted to the bearing shaft diameter. Here, ie in the connection area AB, the gate sion spring 4 encloses the bearing journal 3 a. In the transition area ÜB, the spring diameter of the torsion spring 4 increases up to a value adapted to the inner diameter of the spring sleeve. The bearing shaft journals 3 a extends only as far as the connection region AB, where the torsion spring 4 surrounds the bearing shaft journals 3 a. The growth of the spring diameter in the transition area ÜB takes place in the manner of a cone-like design of the circumference of the tor sion spring 4 .

According to FIG. 3 1, the roller shaft in the region of the other hinge bearing means 5 b - the clamping device or of the torsion spring 4 opposite - an integrated friction damped locking mechanism 23 having ratchet housing 20. This ratchet 23 is used to hold on and braked to wind the unwound tarpaulin 2 . The locking housing 20 is - as already mentioned - on the retaining ring 18 of the other shaft journal 3 b. It is connected to the roller blind shaft 1 in such a way that a pin 24 engages in the slot 22 of the roller blind shaft 1 already mentioned. Accordingly, the locking housing 20 - like the torsion spring 4 - can be easily and securely inserted into the roller blind shaft 1 during assembly. At the bottom of the locking housing 20 is a clutch 25 , which is connected to the shaft journal 3 b and can be locked against the force of a compression spring 26 ent. The clutch 25 cooperates with a shaft gear 27 , not shown, which in a usual manner - in the manner of a ratchet - ensures a gradual and blocked unwinding of the winding tarpaulin 2 .

In addition, a shaft bearing journal 3 b in the ratchet housing 20 comprising ring friction damper 28 is provided, which is arranged in a damper housing part 29 limited by the compression spring 26 of the ratchet housing 20 . The ring friction damper 28 is in the unlocked clutch 25 and compressed compression spring 26 and thereby reduced damper housing part 29 with a predetermined friction force on the shaft bearing journal 3 b. That is, when the clutch 25 is unlocked, the damper housing part 29 is simultaneously reduced and in this way the friction damper 28 is compressed. Its compression leads to the fact that the closed shaft bearing journal 3 b is prevented from rotating with increasing frictional force, so that a damped winding of the winding tarpaulin 2 onto the roller blind shaft 1 succeeds. To unlock the clutch 25 , an unlocking mechanism 30 , for example in the form of a traction cable, is realized. This traction cable is passed through an opening 31 in the pivot pin 7 . Not shown is a cover that can be clipped onto the cover device as a whole.

Claims (14)

1. Spring roller blind, in particular cover spring roller blind, with a roller blind shaft ( 1 ) for a winding tarpaulin ( 2 ) that can be wound thereon, with at least one bearing shaft ( 3 ) inside the roller blind shaft ( 1 ), and with one between roller blind shaft ( 1 ) and bearing shaft ( 3 ) Intermediate tensioning device ( 4 ), wherein the winding tarpaulin ( 2 ) from the roller blind shaft ( 1 ) can be unwound against the force of the tensioning device ( 4 ) and can be wound under the tensioning device ( 4 ) on the roller blind shaft ( 1 ), characterized in that the bearing shaft ( 3 ) in both sides of the roller blind shaft ( 1 ) arranged articulated bearing devices ( 5 a, 5 b) with a predetermined angular play (α, β) and axial play (S) of the roller blind shaft ( 1 ). 2. Spring roller blind according to claim 1, characterized in that the respective joint bearing device ( 5 a, 5 b) as a universal joint with a predetermined angular play (α, β) in a bearing eye ( 6 ) arranged pivot pin ( 7 ) and the pivot pin ( 7 ) in Bearing eye ( 6 ) surrounding hinge ring ( 8 ) is formed. 3. Spring roller blind according to claim 1 or 2, characterized in that the joint bearing device ( 5 ) is formed in longitudinal section Ω-shaped with a central bearing eye ( 6 ) and edge-side closed holding flanges ( 9 ). 4. Spring roller blind according to one of claims 1 to 3, characterized in that the bearing eye ( 6 ) is designed as a circular ring with a circular cross-sectional area ( 12 ) and a central joint pin ( 7 ), and that the joint ring ( 8 ) as a concentric circular ring with a to the circular section cross-sectional area ( 12 ) adapted circular section cross-sectional area ( 13 ) of the same arc radius (R) and predetermined arc angle (γ) is executed. 5. Spring roller blind according to claim 2, characterized in that the hinge pin ( 7 ) on a bearing eye ( 6 ) receiving circular arch clamp ( 14 ) is integrally formed. 6. Spring roller blind according to one of claims 1 to 5, characterized in that the joint bearing device ( 5 ) in the horizontal plane (H) an angular play of approximately 60 ° over brushable horizontal swivel angle (α) and in the vertical plane an angular play of approximately 50 ° swept vertical swivel angle (β). 7. Spring roller blind according to one of claims 1 to 6, characterized in that the bearing shaft ( 3 ) consists essentially of two identically designed bearing shaft journals ( 3 a, 3 b), each of which on the one hand to the associated joint bearing device ( 5 a, 5 b ) are connected and on the other hand are mounted in a bearing block ( 15 ) inserted into the roller shaft ( 1 ). 8. Spring roller blind according to claim 7, characterized in that each bearing shaft journal ( 3 a, 3 b) for adjusting the axial play (S) of the roller blind shaft ( 1 ) in a circular ring savings ( 16 ) end of the bearing block ( 15 ) at Axialver shift the roller blind shaft ( 1 ) on the bearing shaft journal ( 3 a, 3 b) engaging stop lug ( 17 ). 9. Spring roller blind according to one of claims 1 to 8, characterized in that the tensioning device ( 4 ) as in the region of a spherical bearing device ( 5 a) in the roller blind shaft ( 1 ) arranged torsion spring ( 4 ), which is at one end one bearing shaft journal ( 3 a) is connected and engages with its other end by means of a spring arm ( 21 ) in a longitudinal slot ( 22 ) of the roller blind shaft ( 1 ). 10. Spring blind according to claim 9, characterized in that the torsion spring ( 4 ) in a on a locking ring ( 18 ) of the bearing shaft journal ( 3 a) adjacent spring sleeve ( 19 ) is guided on the circumference. 11. Spring roller blind according to claim 9 or 10, characterized in that the torsion spring ( 4 ) in the connection area (AB) on the bearing shaft journal ( 3 a) has a spring diameter adapted to the bearing shaft journal diameter and encloses this, and that the spring diameter in a transition region (ÜB) increases to a value adapted to the inner diameter of the spring sleeve, the bearing shaft journal ( 3 a) only extending into the connection area (AB). 12. Spring roller blind according to one of claims 1 to 11, characterized in that the roller blind shaft ( 1 ) in the region of the tensioning device ( 4 ) opposite hinge bearing device ( 5 b) an integrated friction-damped locking mechanism ( 23 ) for holding and braked winding of the unwind Has tarpaulin ( 2 ). 13. Spring roller blind according to claim 12, characterized in that the locking mechanism ( 23 ) on a locking ring ( 18 ) of the other bearing shaft journal ( 3 b), with the roller blind shaft ( 1 ) connected, locking mechanism housing ( 20 ) on the inside, on bottom of the Gesperregehäuses (20) fitting having coupling (25), said clutch (25) is connected to the supporting shaft pin (3 b) and can be unlocked against the force of a compression spring (26). 14. Spring roller blind according to claim 13, characterized in that a bearing shaft journal ( 3 b) in the locking housing ( 20 ) comprising ring friction damper ( 28 ) is provided, which in a by the compression spring ( 26 ) limited damper housing part ( 29 ) of the locking housing ( 20 ) is arranged, the ring friction damper ( 28 ) with ent unlocked clutch ( 25 ) and compressed compression spring ( 26 ) and thereby reduced damper housing part ( 29 ) with predetermined frictional force on the bearing shaft journal ( 3 b).