EP0659970B1 - Double roller shutter for cabinet type furniture - Google Patents

Abstract

The invention relates to a two-part roller shutter for cabinet-type pieces of furniture. The two roller-shutter elements are constructed of pivotably interconnected profiles and are interconnected by connecting elements. Via said connecting elements, the movement of one roller-shutter element can be transmitted synchronously to the other roller-shutter element in the form of a counter-movement. In the opening region (11) of the piece of furniture (1), guide profiles (2) are arranged on the opposite side walls (12), in the border region. Said guide profiles (2) have two longitudinal grooves (21, 22) which are provided for receiving toothed components (3, 4) and are located one behind the other. Said longitudinal grooves (21, 22) of the guide profiles (2) have slit openings (23, 24) directed parallel to the interior (13) of the piece of furniture (1). The toothed components (3, 4), which are arranged in the longitudinal grooves (21, 22) such that they can be displaced with respect to one another, can be connected via connecting means (5, 6) to in each case one of the roller-shutter elements (7, 8). The spacing between the longitudinal grooves (21, 22) arranged one behind the other is formed by a hollow region (25) in the guide profile (2). Said hollow region (25) is spanned by at least one rotatable gear wheel (9), arranged in a stationary manner on a pin (91), such that the teeth (92) of the gear wheel (9) mesh with the teeth (31, 41) of the toothed components (3, 4).

Description

The invention relates to a two-part shutter for cabinet-like Pieces of furniture, the two roller shutter elements being pivoted together connected profiles exist, and being the two roller shutter elements are connected to one another by connecting elements which synchronize the movement of one roller shutter element with the other Roller shutter element is transferable in the form of a counter movement.

Such a roller shutter element is known from EP 0 382 435 A1. The system described there uses on both narrow sides of the piece of furniture close to the opening in the upper and lower side wall area a roller over which a steel cable or fabric tape runs. The Both end strips of the upper and lower roller shutter element are on attached to the rope or fabric tape. As soon as the one end bar at the first roller shutter element is moved, the other end bar with the second roller shutter element through the rope fabric belt system into the other Moving direction.

The disadvantage of this system is seen in the fact that the roles are relative must be made small so that the vertical rope sections not too far apart. The roles become too small selected, the entire system is difficult to move because the ropes - steel ropes are usually chosen for durability reasons - are too difficult to bend over the small circumference of the reel. The risk of breakage for the steel cables is great in this case. Become textile tapes chosen for this system, the wear is predetermined in a short time. In addition, there is a slight delay in such tapes, so that the required tension in the system subsides.

If the guide rollers are chosen not too small, but too large, the distance of the ropes or tapes in the facial expressions increases large.

The end bar for the assigned roller shutter element, the one with the most distant one Rope is then connected in the guide rail very much well guided to allow the shutter to move at all. This guide can be complex with several small guide roles take place, which in turn in the slide rail of the shutter element to run. Without this additional guidance, especially in large areas Roller shutter elements the eccentric driving force for clamping of the roller shutter elements or lead to incorrect running. A system similar to that previously described is from the British Patent 885, 999 known. The system described there does not overflow a flexible band as a connection, but over steel wires. The disadvantages described above also apply to this system to the full extent.

This is where the invention comes in, which has set itself the task of in a two-part roller shutter of the type mentioned to specify a counter-moving drive system for such roller shutter elements, that avoids any difficulty of movement and one in question Roller shutter system indicates which even after a long time of use still has the same excellent running properties as at the beginning. According to the invention it is proposed that in the opening area of the piece of furniture on the opposite side walls near the edge guide profiles can be arranged, which two for receiving toothed Components provided, one behind the other longitudinal grooves, that the longitudinal grooves of the guide profiles parallel to the interior of the Directional slot openings have that in the longitudinal grooves toothed components slidably arranged relative to one another Connecting means can be connected to one of the roller shutter elements, and that the distance between the longitudinal grooves arranged one behind the other is formed by a hollow area of the guide profile, which by at least one rotatable gear wheel fixedly arranged on an axis is bridged so that the teeth of the gear with the teeth of the Comb toothed components.

The advantage of the gear movement facial expression according to the invention lies compared to the cable mechanism in the easy movement, because there is no redirection to different roles more or less large diameter results. The gear system of the invention can be made relatively compact, the individual component with For example, teeth can have a dimension of 5 x 5 mm. Although the two components of the system are arranged one behind the other the system builds very small, because in addition to the small Dimensions also a gear of smallest dimension can be used can.

Another advantage is the fact that the gear system according to the invention is easy to assemble. With the rope system of the state of the Technology, on the other hand, must be stretched the movement rope and the end strips the shutter elements must be in exactly the right place be connected to the steel cable, otherwise the end strips will not be parallel and correct running in the guide rails is not guaranteed is.

Finally, the toothed components according to the invention are stiff Profiles, e.g. Racks, toothed metal strips and the like, the guided in their entire length in the guide grooves of the guide profiles will. The end strips of the roller shutter elements can therefore be mechanical be fixed to the components so that the end strips from the Components are performed. This prevents in any case that clamp the end strips in the assigned guide rail.

As a last advantage over the known systems, that a breaking of the toothed components according to the invention Steel wire or tearing of the textile tape is excluded. The rigid movement facial expressions of the invention also prevent tilting of the end strips in the guide rails.

In the system according to the invention, it is advantageous that the guide profile an outwardly directed, U-shaped groove opening is formed in which the free ends of the roller shutter elements engage.

A guide bar can advantageously protrude into this U-shaped groove opening, which in a groove on the free ends of the shutter elements intervenes.

The connecting means between the toothed components according to the invention and the roller shutter elements are advantageously angular Tabs on the one hand with the end bar of the assigned roller shutter element and on the other hand with the assigned component in the guide profile are mechanically connected.

To guide the toothed components in the longitudinal grooves of the guide profile To improve still further, it seems advantageous that in the clear interior of the longitudinal grooves protrudes at least one guide lug, which in a longitudinal guide groove in the associated Component engages. The components for the system according to the invention can be made of metal or plastic, the teeth of the Components are punched, sawn or sprayed.

Fig.1 einen Schnitt durch den vorderen Teilbereich eines Möbelstücks mit montiertem Führungsprofil und kurzer Verbindungslasche.

Fig.2 einen Schnitt gemäß Fig.1 mit langer Verbindungslasche und Zahnrad.

Fig.3 einen Schnitt gemäß Fig.1 mit anderer Gestaltung der Führungsnut für die Rolladenelemente.

Fig.4 eine perspektivische Teilansicht des Führungssystems.

Fig.5 die perspektivische Darstellung eines Schrankelementes mit angedeutetem Führungssystem.

In the drawing, exemplary embodiments of the roller shutter system according to the invention are shown schematically; it shows:

1 shows a section through the front portion of a piece of furniture with a mounted guide profile and a short connecting strap.

2 shows a section according to Figure 1 with a long connecting plate and gear.

3 shows a section according to FIG. 1 with a different design of the guide groove for the roller shutter elements.

4 shows a perspective partial view of the guide system.

5 shows the perspective view of a cabinet element with the indicated guide system.

In Figure 1, the side wall 12 of the piece of furniture 1 is indicated. To the opening area 11 of the piece of furniture 1 is the guide profile 2nd arranged. The guide profile 2 can be mechanically and / or by gluing be connected to the inner surface 13 of the side wall 12. The guide profile 2 has the groove opening 26 directed outwards, in which the end strips 71, 81 engage and are guided there. Behind the groove opening 26 are the longitudinal grooves 21 in the guide profile 2, 22 arranged which the toothed components, racks shown here Record 3, 4. The racks 3, 4 are in the longitudinal grooves 21, 22 arranged that the teeth 31, 41 are facing each other.

The longitudinal grooves 21, 22 have outwardly directed slot openings 23, 24, for engaging and fastening fasteners 51, 52 serve for the connecting means 5, 6. In Fig.1 is about such a fastener 51, the connecting means 5 on the Rack 3 set such that the connecting means 5, which is designed as an angular tab, with the end bar 71 of the associated Roller shutter element 7 is fixedly connected to the surface the guide profile 2 remains a sufficiently large space that the possibility of movement of the angular tab 5 over the Guide profile 2 is retained.

The guide profile 2 has in the longitudinal grooves one behind the other 21, 22 each have at least one guide lug 27, 28, which in the clear interior of the longitudinal grooves 21, 22 protrudes and into an associated longitudinal guide groove 32, 42 in the associated rack intervenes.

The longitudinal grooves 21, 22 of the guide profile arranged one behind the other 2, which receive the racks 3, 4, are through a hollow area 25 separated from each other.

From Figure 2 it follows that this hollow area 25 by a stationary on the axis 91 arranged rotatable gear 9 is bridged.

The bridging takes place in such a way that the teeth 92 of the gear wheel 9 comb with teeth 31, 41 of racks 3, 4. In this way the desired opposite movement of the racks 3, 4 and thus achieve the shutter elements 7, 8.

In Figure 2, in contrast to Figure 1, the connecting means 6 is in shape a longer tab than that used in the connecting means 5 in Fig.1 is specified. The connecting means 6 connects the rack 4 with the end bar 81 of the second roller shutter element 8, the connection to rack 4 in the same way as for Fig.1 described. The connection to the end bar 81 can be by gluing and / or screws / or rivets. The axis 91 of the gear 9 is rotatably held in an insert pot 93, which in turn in a wall opening 14 is held in the side wall 12 of the piece of furniture 1.

In Figure 3, the basic structure of Figure 1 is shown with a different design the U-shaped slot opening 26 for receiving the end strips 71, 81. From the bottom 261 of the groove opening 26 protrudes in the shown Representation of a guide web 27, which in a groove (72, 82) engages the free ends of the end strips 71, 81 leading. Is shown in Figure 3 only the engagement of the guide web 27 in the groove 72 of the end bar 71. The same additional guidance can also be found in the end bar 81 achieve, the guide web 27 then in the not shown Groove 82 engages. In this context, it goes without saying that these guides each on both side walls of the piece of furniture must each be provided for the end strips 71, 81.

In Figure 4 is a partial perspective view of the invention Management system shown. For the sake of simplicity, here is the Playback of the furniture walls has been dispensed with. A leadership profile is shown 2 with the rack 3 projecting upwards, which is in the longitudinal groove 21 is arranged. In the longitudinal groove 22 is the down protruding rack 4, the teeth 31, 41 facing each other are.

The end bar 71 is connected via the tab-shaped connecting means 5 the rack 3 connected via the fasteners 51, the Type of connection to Fig.1 is described. The longer tab-shaped Connecting means 6 connects the end bar 81 of the lower roller shutter element 8 via the fastening elements 61 with the rack 4. The gear 9 is not shown in this illustration.

The operation of the gear 9 results from the perspective Representation of a cabinet element with the translucent Management system. A cabinet-like piece of furniture 1 is shown with a upper roller shutter element 8 and a lower roller shutter element 7. Die Roller shutter elements 7, 8 have for handling in the middle area the end strips 71, 81 handle elements 73, 83.

The facial expression is translucent in the front side wall. So is the upper shutter element 8 over the connecting means 6 with the longer bracket leg with the rack 4 in the described Way firmly connected. The lower shutter element 7 is via the end bar and the connecting means 5 with the shorter bracket angle connected to the rack 3. In the space between the racks 3, 4, the gear 9 is arranged on the axis 91, that the teeth 92 of the gear 9 with the teeth 31, 41 of the racks Comb 3, 4. After the gear 9 is arranged stationary, the racks arranged in the longitudinal grooves 21, 22 of the guide profile 2 3, 4 run up and down on the gear 9, and thus the roller shutter elements 7, 8 in an open-close movement.

The racks 3, 4 are only exemplary in the illustration shown reproduced. It can be used for the purposes of the invention differently shaped tooth element are used, whose teeth in the Are able to comb with the teeth of the gear 9 and in this way to transfer the rolling motion to the two roller shutter elements.

Claims (7)

1. A two-section tambour door for cabinet-style items of furniture, in which the two tambour door sections (7, 8) consist of flexibly connected profiles, and in which the two tambour door sections are joined to each other by means of connecting elements which enable the motion of one tambour door section to be transferred synchronously to the other tambour door section so as to produce a counter-motion, characterised in that it is possible to arrange track profiles (2) on the opposing side walls (12) around the edges of the open part (11) of the item of furniture (1), the said track profiles (2) having two serially arranged longitudinal chambers (21, 22) designed to receive toothed components (3, 4); in that the longitudinal chambers (21, 22) in the track profiles (2) have slot-type openings (23, 24) running parallel to the interior (13) of the item of furniture (1); in that each of the counter-directionally sliding toothed components (3, 4) in the longitudinal chambers (21, 22) can be connected to one of the tambour door sections (7, 8) by means of connecting pieces (5, 6); and in that the gap between the serially arranged longitudinal chambers (21, 22) is formed by a hollow part (25) ofthe track profile (2), which hollow part is bridged by at least one rotatable sprocket (9) on a permanently mounted axis (91), the bridging arrangement being such that the teeth (92) of the sprocket (9) mesh with the teeth (31, 41) on the toothed components (3, 4).
2. Tambour doors according to Claim 1, characterised in that the track profile (2) has a U-shaped, outward-facing moulded rebate (26) in which the free ends of the tambour door sections (7, 8) are engaged.
3. Tambour doors according to Claim 2, characterised in that there is a guide web (27) which projects into the U-shaped rebate (26) and engages in a recess (72, 82) in the free end ofthe end slat (71, 81) on the tambour door section (7, 8) to act as a guide.
4. Tambour doors according to Claim 1, characterised in that the connecting pieces (5, 6) are angled brackets, each with one arm mechanically joined to the end slat (71, 81) of the respective tambour door section (7, 8) and the other arm mechanically joined to the respective toothed component (3, 4) in the track profile (2).
5. Tambour doors according to Claim 1, characterised in that there is at least one guide lug (27, 28) which projects into the hollow interior of the longitudinal chamber (21, 22) in the track profile (2) and engages in a longitudinal guide groove (32, 42) in the respective toothed component (3, 4).
6. Tambour doors according to one or more of the above Claims, characterised in that the toothed components (3, 4) are made of metal or plastic.
7. Tambour doors according to Claim 5, characterised in that the teeth (31, 41) of the toothed components (3, 4) are punched, sawn or injection moulded.

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