Screen device

Abstract

A screen device comprising: a screen roller (1), having a screen (2), which can be rolled up and unrolled hereon and which on at least one lateral side is provided with a thickening (6), a motor (7) for driving the screen roller (1), which motor, at that end of the screen roller (1) closest to the thickening (6), is disposed at least partially in the screen roller (1), wherein the motor (7) is fitted so far into the screen roller (1) that the thickening (6), in the rolled-up state of the screen (2), is positioned at least partially closer to the screen roller axis (A) than any point on that part of the motor (7) that is fitted in the screen roller (1), which point is situated the furthest from this screen roller axis (A).

Claims

1. A screen device comprising: a screen roller, which is arranged rotatably about a screen roller axis; a screen configured to reversibly transition between a first, rolled up state on the screen roller and a second, unrolled state on the screen roller, the screen comprising a thickening on at least one lateral side, wherein the thickening, in the first state of the screen, is positioned at least partially closer to the screen roller axis than any point on an outer circumference of the screen roller that is furthest from the screen roller axis; and an electric motor for driving the screen roller, wherein the motor is disposed at least partially inside the screen roller at an end of the screen roller that is positioned closest to the thickening, thereby defining portions of the motor inside the screen roller; wherein the motor is fitted sufficiently inside the screen roller such that, in the first state of the screen, the thickening is positioned at least partially closer to the screen roller axis than at least one point on the portions of the motor inside the screen roller, wherein the screen device, at the end of the screen roller that is positioned closest to the thickening, comprises a screen roller end piece, the screen roller end piece comprising a constriction such that, when the screen is in the first state and in the second state, the thickening ends up adjacent to the constriction, wherein the screen roller end piece is fixedly disposed in the screen device, and wherein the screen roller is arranged rotatably relative to the screen roller end piece, wherein the motor comprises a motor body that is configured to rotate about a longitudinal direction of the screen roller and is fixedly fitted in the screen roller, and wherein the motor comprises a motor head that is configured to rotate with respect to the motor body, and wherein the screen roller end piece is fixedly fastened to the motor head according to the longitudinal direction of the screen roller.

2. The screen device according to claim 1, characterized in that the electric motor is an electric tube motor.

3. The screen device according to claim 1, characterized in that any external dimension of the screen roller end piece closest to the screen roller is smaller than an outside diameter of the screen roller when the screen roller end piece closest to the screen roller is viewed transversely to a longitudinal direction of the screen roller.

4. The screen device according to claim 1, characterized in that the screen roller end piece comprises a shell surface that does not impede movement of the screen during the reversible transition from the first state of the screen to the second state of the screen.

5. The screen device according to claim 1, characterized in that the screen roller end piece tapers towards the constriction on the lateral side of the screen roller.

6. The screen device according to claim 1, characterized in that the screen device comprises a fastening head that is fixedly fastened to the motor head, the motor head being a portion of the motor, the motor being disposed at least partially inside the screen roller, wherein the screen device comprises a fastening body that is fixedly disposed in the screen device, wherein, when the fastening body is fastened to the fastening head, the screen device is able to receive the screen roller with the screen thereon, wherein, when the fastening body is disconnected from the fastening head, the screen roller is removable from the screen device, wherein the screen roller together with the motor is configured to be connected to the fastening body by connecting the fastening body to the fastening head, and wherein the screen roller together with the motor is configured to be disconnected from the fastening body by disconnecting the fastening body from the fastening head.

7. The screen device according to claim 6, characterized in that the screen roller end piece comprises the fastening head at an end opposite to the screen roller.

8. The screen device according to claim 1, characterized in that the screen device comprises an insert that is fastened to the end of the screen roller that is positioned closest to the thickening and that is at least partially configured to fasten the motor in the screen roller.

9. The screen device according to claim 8, characterized in that the insert at least partially tapers away from the screen roller.

10. The screen device according to claim 5, wherein the screen device comprises an insert that is fastened to the end of the screen roller that is positioned closest to the thickening and that is at least partially configured to fasten the motor in the screen roller.

11. The screen device according to claim 1, characterized in that the constriction, when viewed in a longitudinal direction of the screen roller, has a dimension (d.sub.e) transverse to the longitudinal direction of the screen roller that is smaller than a largest corresponding dimension (D.sub.m) of the portions of the motor inside the screen roller.

12. The screen device according to claim 6, characterized in that the fastening body forms part of a screen box of the screen device.

13. The screen device according to claim 6, characterized in that the fastening head is fastenable to the fastening body via a linear sliding movement, the movement occurring transversely to the longitudinal direction of the screen roller.

14. The screen device according to claim 1, characterized in that the screen device comprises at least one screen guide for guiding the thickening during the reversible transition between the first, rolled up state and the second, unrolled state.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) This invention is now explained in greater detail on the basis of the hereinafter following detailed description of a preferential embodiment of a screen device according to this invention. The aim of this description is solely to provide illustrative examples and to indicate further advantages and particularities of the invention, and thus can by no means be interpreted as a limitation of the scope of the invention or of the patent rights claimed in the claims.

(2) In this detailed description, reference is made by means of reference numerals to the accompanying drawings, wherein in

(3) FIG. 1 is depicted schematically in cross section a part of a screen roller adjacent to its end, with a screen which can be rolled up and unrolled thereon, an insert and a screen roller end piece of a screen device according to this invention.

DETAILED DESCRIPTION

(4) The depicted screen device comprises a screen roller (1), on which a screen (2) can be rolled up and unrolled herefrom. For this purpose, the screen roller (1) is rotatable about a screen roller axis (A). The roll-up and unrolling movement of the screen (2) is driven with the aid of a motor (7), which is partially fitted in the screen roller (1) with the aid of an insert (3).

(5) The screen roller (1) is designed as a hollow tube. In order to prevent the motor (7) from being able to penetrate further into the screen roller (1), the insert (3) is provided with a locking rim (11) and the motor (7) is provided with a corresponding locking rim (12). These locking rims (11, 12) extend substantially transversely to the longitudinal direction of the screen roller (1).

(6) The motor (7) comprises a motor body (8), which is fixedly fitted in the screen roller (1) according to the direction of rotation of the screen roller (1) in the rolling-up and unrolling of the screen (2), and a motor head (9), which is provided rotatably with respect to the motor body (8).

(7) To the motor head (9) is fastened a screen roller end piece (4), fixedly according to the direction of rotation of the screen roller (1). At its end, away from the screen roller (1), the screen roller end piece (4) is provided with a fastening head (10). With the aid of this fastening head (10), this screen roller end piece (4) can be fastened, via a linear sliding movement perpendicular to the longitudinal direction of the screen roller (1), fixedly in the screen device, this, for example, to an end piece of a screen box. Such fastenings with the aid of such a fastening head (10) are already known.

(8) Typically, in the known devices however, the motor head (9), which is designed as a fastening head, is fastened directly to such an end piece. This motor head (9) can also be fastened to such an end piece with the aid of an intermediate piece. This now happens with the screen roller end piece (4) as the intermediate piece. During this sliding movement, this fastening head (10) can be mechanically coupled with this end piece. At the same time, an electrical coupling can also take place, wherein the motor (7) is connected up to a supply cable. For this purpose, the electrical wiring to the motor (7) should then also partially be installed in the screen roller end piece (4).

(9) The screen (2) of the screen device is provided on its depicted lateral side with a thickening (6), which can be guided, for example with the aid of a screen guide, during the roll-up and unrolling movement of the screen (2). This thickening (6) can be designed, for example, as a half zip fastener. Adjacent to this thickening (6), the screen roller end piece (4) comprises a constriction (5), which, viewed according to the longitudinal direction of the screen roller (1), is disposed next to the motor (7).

(10) This constriction (5) here has a smallest dimension (d.sub.e), transversely to the longitudinal direction of the screen roller (1), which is smaller than the largest corresponding dimension (D.sub.m) of the motor (7). The thickening (6) is hence, in the rolled-up state of the screen (2), partially positioned closer to the screen roller axis (A) than any point on that part of the motor (7) that is fitted in the screen roller (1), which point is situated furthest from this screen roller axis (A).

(11) The shell surface of the screen roller end piece (4) is of smooth construction, so that this does not slow down the screen (2) during the roll-up and unrolling movement. For this purpose, the diameter (D.sub.e) of the screen roller end piece (4) is, closest to the screen roller (1), also smaller than the diameter (D.sub.s) of the screen roller (1). For this purpose, the insert (11) is at its end away from the screen roller (1), still designed such that it is conically tapered towards the screen roller end piece (4) in order to realize a smooth transition between the screen roller (1) and the screen roller end piece (4).

(12) In order to still be able to adjust the end positions of the screen (2) despite this arrangement of the constriction (5) with respect to the motor (7), the motor (7) is designed as an electronic tube motor (7).