EP0741378A1

EP0741378A1 - A device for displaying illustrations, texts or the like

Info

Publication number: EP0741378A1
Application number: EP96201009A
Authority: EP
Inventors: Gerrit Cornelis Van Ooyen
Original assignee: Zweegers Paulus Bernardus Louise Maria
Current assignee: Zweegers Paulus Bernardus Louise Maria
Priority date: 1995-05-01
Filing date: 1996-04-24
Publication date: 1996-11-06
Anticipated expiration: 2016-04-24
Also published as: NL1000263C2; ATE195194T1; EP0741378B1; DE69609556T2; DE69609556D1

Abstract

The invention relates to a device for displaying illustrations, texts or the like provided with a frame and with a plurality of display means which are rotatable about parallel axes of rotation, said display means comprising a few surfaces extending at least substantially parallel to said axes of rotation and including an angle with each other, which surfaces are provided with parts of the illustrations, texts or the like to be formed. Wheel-shaped driving means for rotating the display means are disposed near ends of the display means. The wheel-shaped means co-operate with pins secured to the ends of said display means, which extend parallel to the axis of rotation of the respective display means and which are disposed in regularly spaced-apart relationship on a circle extending concentrically about the axis of rotation of the display means. The wheel-shaped means is provided with a projecting nose, on either side of which passages for the pins are formed in the wheel-shaped means, all this in such a manner that when the wheel-shaped means is rotated, a pin is engaged by the nose so as to effect a rotation of the respective display means.

Description

The invention relates to a device for displaying illustrations, texts or the like provided with a frame and with a plurality of display means which are rotatable about parallel axes of rotation, said display means comprising a few surfaces extending at least substantially parallel to said axes of rotation and including an angle with each other, said surfaces being provided with parts of the illustrations, texts or the like to be formed, whilst wheel-shaped driving means are disposed near ends of said display means, which wheel-shaped driving means can be rotated about their central axes extending transversely to the axes of rotation of the display means in order for said display means to be rotated, whereby said wheel-shaped means co-operate with pins secured to the ends of said display means.
A device of this type is known from European Patent Application No. 0 539 308. Various illustrations, texts or the like can be displayed in succession with such a device by rotating the display means.
In this known device three pins extending in radial direction with respect to the display means are secured to each display means. Said pins co-operate with a wheel-shaped means which is circumferentially provided with a helical groove in which said pins engage and through which said pins move in order to rotate the respective display means. Especially the construction of the wheel-shaped means with a helical groove formed therein makes this a complicated and costly construction. In this known construction the wheel-shaped means must furthermore be disposed beside the extension of the axis of rotation of the display means, which leads to a comparatively great width of the device, seen in a direction perpendicularly to the plane through the axes of rotation of the wheel-shaped means.
The object of the invention is to provide a device wherein the above drawbacks are avoided.
With the device according to the invention this object is accomplished in that pins secured to a display means extend parallel to the axis of rotation of the respective display means and are disposed in regularly spaced-apart relationship in a circle extending concentrically about the axis of rotation of the display means, whilst the wheel-shaped means is provided with a projecting nose, on either side of which passages are present in said wheel-shaped means, all this in such a manner that when the wheel-shaped means is rotated, a pin is engaged by the nose so as to effect a rotation of the respective display means, whereby two pins are each guided through a passage from one side of said wheel-shaped means to another side of said wheel-shaped means.
When using the construction according to the invention it will be possible to use a wheel-shaped means, whereby the two passages in the wheel-shaped means are designed to have a simple shape, so that they are easy to form, whilst the wheel-shaped means may be disposed in line with the respective display means, so that the device can be designed to have a small depth.
One embodiment of the device according to the invention is characterized in that said wheel-shaped means is provided with two parallel flanges positioned on the same side of said nose, said flanges near said nose being provided with passages for guiding a pin from a side facing said nose of the flange located near said nose to a side facing away from said nose of the other flange, and vice versa.
The nose is in engagement with said pins only over a particular part of a revolution of the wheel-shaped means. When the wheel-shaped means is rotated while the nose is not in engagement with the pins, the flanges provide an accurate guiding and positioning of the pins positioned between the flanges.
The invention will be explained in more detail hereafter with reference to parts of the device according to the invention diagrammatically illustrated in the accompanying Figures.
Figure 1 is schematically shows one end of a display means with pins secured thereto and a wheel-shaped means co-operating with said pins.
Figure 2 is a larger-scale view of a wheel-shaped means.
Figure 3 is a side view of Figure 2.
Figure 4 is a sectional view of Figure 3, along line IV-IV in Figure 3.
Figures 5a-5g schematically show relative positions, seen from the central axis of the wheel-shaped means in the direction of the outer circumference of the wheel-shaped means, which pins secured to a display means and the wheel-shaped means take up with respect to each other when the wheel-shaped means is rotated in order to effect a rotation of the display means.
Figure 6 is a perspective view of a second embodiment of a device according to the invention.
Figure 7 is a perspective view of the device shown in Figure 6, in another position thereof.
Figure 8 is a larger-scale view of a wheel-shaped means according to the invention shown in Figure 6.
Figure 9 is a side view of Figure 8.
Figure 10 is a sectional view of Figure 8, along line X-X in Figure 8.
Figures 11A-G schematically show relative positions, seen from the central axis of the wheel-shaped means in the direction of the outer circumference of the wheel-shaped means, which pins secured to a display means and the wheel-shaped means take up with respect to each other when the wheel-shaped means is rotated in order to effect a rotation of the display means.
Like parts are numbered alike in the Figures.
Figure 1 shows one end of a display means 1, which is provided with three surfaces 2 including an angle with each other, which surfaces 2 form an equilateral triangle, seen in sectional view of the display means 1. A plurality of such display means are arranged in parallel relationship, and are journalled in supports 3 in such manner as to be rotatable about axes of rotation extending in the longitudinal direction of the display means, said supports 3 forming part of a frame of a device for displaying illustrations of which display means 1 forms part. The surfaces 2 are thereby intended for being provided with illustrations, texts or the like.
Devices of this kind are generally known, for example from the aforesaid European Patent 0 539 308 or from European Patent 0 162 254. For a description of the general design and operation of said devices for displaying illustrations, texts or the like reference is therefore made to the said publications, and a detailed explanation thereof will not be included herein.
As is shown in Figure 1, a shaft 4 is mounted on one end of display means 1, the central axis of said shaft coincides with the axis of rotation of display means 1. A disc 5 extending perpendicularly to shaft 4 is mounted on the end of said shaft 4. Three pins 6 - 8 are mounted on said disc, on the side facing away from shaft 4, said pins extending parallel to shaft 4 and thus parallel to the axis of rotation of display means 1.
As is apparent in particular from Figure 5, the pins are thereby arranged at regular angular distances apart on a circle extending concentrically about the axis of rotation of display means 1.
The pins co-operate with a wheel-shaped means 9 illustrated in more detail in Figures 1 - 4. Said wheel-shaped means comprises a hub 10, in which a (preferably unround) hole 11 is formed, said hole being hexagonal in the illustrated embodiment.
A plate-shaped disc 12 extending perpendicularly to the central axis of hole 11 is mounted on said hub, said disc extending through approximately 270° about the central axis of hole 11. Mounted on the outer circumference of said disc is a rim or strip 13 extending concentrically about the disc, the ends of which rim or strip project slightly beyond the ends of plate 12.
Furthermore a radially extending arm 14 is secured to hub 10, which arm divides the angle between boundary edges 15 and 16 of plate 12 in half, seen in the longitudinal direction of the central axis of hub 10. A plate-shaped means or nose 17 is mounted on the free end of arm 14. As will be apparent from Figure 3, said plate-shaped means or nose 17 is curved in the longitudinal direction of the central axis of hub 10, in such a manner that said plate-shaped means or nose 17 extends concentrically about the central axis of hub 10, whereby the spacing between the hub and the outer and the inner boundary surfaces of nose 17 is the same as the spacing between the hub and the inner and the outer boundary surfaces of rim 13.
As is furthermore apparent from Figure 2, the width of the part of nose 17 positioned between the facing ends of rim 13 gradually decreases. The boundary edges 18 and 19 of rim 13 facing towards nose 17 thereby extend more or less parallel to the boundary edges of said nose positioned opposite said boundary edges 18 and 19. Thus passages 20 and 21 are formed on either side of nose 17, between the boundary edges 18 and 19 of said rim 13 and the opposite boundary edges of nose 17, the longitudinal axes of said passages including an angle deviating from 90° with an imaginary plane extending through the central axis of hub 10 and the longitudinal axis of arm 14, whereby said passages 20 and 21 extend in opposed oblique directions with respect to said imaginary plane.
As is shown in Figure 1, a wheel-shaped means of this kind is disposed beside disc 5, in such a manner that the central axis of hub 10 is intersected perpendicularly by the extension of the axis of rotation of display means 1. In the position of rest of display means 1, which is shown in Figure 1, pins 6 and 8 will be positioned on one side of rim 13 of wheel-shaped means 9 and pin 7 will be positioned on the other side of said rim 13, as a result of which said wheel-shaped means 9 prevents rotation of display means 1 about its axis of rotation.
The wheel-shaped means 9 will be rotated so as to cause rotation of the display means about its axis of rotation, as is indicated by means of arrow A in Figure 5. Said diagrammatic Figure 5 shows the illustrated parts as seen from the central axis of wheel-shaped means 9 in the direction of the outer circumference of the wheel-shaped means, in particular in the direction of nose 17, as is indicated by arrow B (Figure 3). When wheel-shaped means 9 is rotated, the part of nose 17 that projects beyond rim 13 in a direction perpendicularly to the central axis of wheel-shaped means according to arrow B will come into contact with pin 7, which will cause display means 1 to rotate in the direction according to arrow B, as is indicated in Figure 5b . Said rotation of display means 1 will cause pin 7 to move through passage 20 from one side of rim 13 to the other side of rim 13, as is shown in Figures 5c-5f, whilst pin 6 will move through passage 21 in opposite direction from one side of the wheel-shaped means to the other side of said wheel-shaped means. It will be apparent that a rotation of wheel-shaped means 9 through 360° will thus result in a rotation of the display means through 120°. In this position, in which display means is rotated through 120°, pin 6 will be positioned on one side of rim 13, whilst the two pins 7 and 8 are positioned on the other side of the wheel-shaped means, as is shown in Figure 5g, whereby wheel-shaped means 9 will prevent rotation of the respective display means 1 after it has been stopped.
The wheel-shaped means 9 of display means 1 disposed in side-by-side relationship in the device may be mounted on a common unround shaft inserted into holes provided in the wheel-shaped means. The unround shaft is preferably twisted about a central axis extending in its longitudinal direction, so that a more or less "wavy" rotating movement of the display means 1 disposed in parallel relationship is effected, since it will be possible in a simple manner in that case for the pins 6-8 of successive display means to be positioned at different parts of the continuous part of the respective rim 13 in the position of rest.
Figures 6 - 11 show a second embodiment of the device according to the invention, which is provided with another wheel-shaped means 25. Said wheel-shaped means comprises a hub 10, in which a (preferably unround) hole 11, a hexagonal hole in the illlustrated embodiment, is formed. Two flanges 26, 27 extending transversely to the central axis of hole 11 are secured to said hub 10, which flanges extend parallel to each other. An annular guide slot 28 is located between flanges 26, 27. Furthermore a radially extending arm 14 is secured to the hub 10. A plate-shaped means or nose 17 is secured to the free end of arm 14. Nose 17 is configured to extend concentrically about the central axis of hub 10, whilst the tip of the nose is directed towards flanges 26, 27. Flanges 26, 27 are provided with passages 29, 30 on either side of nose 17. The tip of nose 17 extends to within passage 29 of flange 26.
In the position shown in Figure 6 pins 6, 8 are positioned within slot 28 and pin 27 is positioned on a side facing nose 17 of the flanges 26. Pins 6, 8 are precisely maintained in the position shown in Figure 6 by the flanges 26, 27 bounding slot 28. By rotating a shaft 31 extending through slot 11 in a direction indicated by arrow A the various positions A - G shown in Figure 11 are successively obtained until, after a single revolution of shaft 31, pins 7 and 8 are positioned within slot 28 and pin 6 is positioned on a side of flange 26 facing nose 17. As a result of the position of the pins being changed the display means connected therewith has at the same time been tilted through 120°.
The positions shown in Figures 11A-G of the disc 5 and the pins 6, 7, 8 connected therewith largely correspond with the positions of disc 5 shown in Figures 5A-G. By pivoting shaft 31 in the direction indicated by arrow A nose 17 is brought into engagement with pin 7, as a result of which disc 5 will rotate in the direction indicated by arrow B. Pin 6 is thereby moved along another side of the nose 17 by the passage 29 in flange 26, whilst pin 8 is moved out of slot 27 to a side of flange 27 facing away from nose 17 by the passage 30 in flange 27. In the position shown in Figure 11C a pin 6, 7 is present on either side of nose 17. The position shown in Figure 11D corresponds with the position shown in perspective view in Figure 7, wherein nose 17 extends transversely to shaft 4.
From this position pin 8 is led back to slot 28 via passage 30 as a result of the further pivoting of the nose in the direction indicated by arrow A, whilst pin 7 is moved into said slot via passage 29 (see Figures 11E-F). In the position shown in Figure 11G pins 7 and 8 are positioned within slot 28. When nose 17 is pivoted further in the direction indicated by arrow A, nose 17 is no longer in contact with either one of said pins, until the position of nose 17 with respect to said pins as shown in Figure 11A is reached again, with the understanding that in that position disc 5 has meanwhile rotated through 120°, so that nose 17 will abut against pin 6 instead of against pin 7. During the pivoting of nose 17 between the position shown in Figure 11G and the position shown in Figure 11A pins 7, 8 are maintained in the position shown in Figure 11G by means of the flanges 26, 27, and any undesirable rotation of disc 5 is prevented. Flanges 26, 27 thus provide a precisely defined position of disc 5, and thus of display means 1, with stationary surfaces 2.

Claims

A device for displaying illustrations, texts or the like provided with a frame and with a plurality of display means which are rotatable about parallel axes of rotation, said display means comprising a few surfaces extending at least substantially parallel to said axes of rotation and including an angle with each other, said surfaces being provided with parts of the illustrations, texts or the like to be formed, whilst wheel-shaped driving means are disposed near ends of said display means, which wheel-shaped driving means can be rotated about their central axes extending transversely to the axes of rotation of the display means in order for said display means to be rotated, whereby said wheel-shaped means co-operate with pins secured to the ends of said display means, characterized in that the pins secured to the display means extend parallel to the axis of rotation of the respective display means, and the pins are disposed in regularly spaced-apart relationship on a circle extending concentrically about the axis of rotation of the display means, whilst the wheel-shaped means is provided with a projecting nose, on either side of which passages the for pins are formed in the wheel-shaped means, whilst said wheel-shaped means is provided with a projecting nose, on either side of which passages for the pins are formed in said wheel-shaped means, all this in such a manner that when the wheel-shaped means is rotated, a pin is engaged by the nose so as to effect a rotation of the respective display means, whereby two pins are each guided through a passage from one side of the wheel-shaped means to the other side of said wheel-shaped means.
A device according to claim 1, characterized in that the axis of rotation of a display means intersects the central axis of the associated wheel-shaped means at least substantially perpendicularly.
A device according to claim 1 or 2, characterized in that said wheel-shaped means is provided with two parallel flanges positioned on the same side of said nose, said flanges near said nose being provided with passages for guiding a pin from a side facing the nose of the flange located near said nose to a side facing away from said nose of the other flange, and vice versa.
A device according to claim 1 or 2, characterized in that the position and the width of said wheel-shaped means are such that said wheel-shaped means fits between pins positioned on either side of said wheel-shaped means.
A device according to claim 4, characterized in that said wheel-shaped means is provided with a rim extending along part of the circumference of said wheel-shaped means, said rim being connected to a hub of said wheel-shaped means by means of a plate-shaped part extending perpendicularly to the central axis of said wheel-shaped means.
A device according to claim 5, characterized in that said plate-shaped part extends through an angle about the central axis of said wheel-shaped means which is smaller than the angle through which said rim extends about the central axis of said wheel-shaped means.
A device according to claim 5 or 6, characterized in that said nose is positioned between the facing ends of the rim, and projects beyond said rim on one side thereof.
A device according to claim 7, characterized in that the width of the part of the nose positioned between the facing ends of said rim gradually decreases in a direction away from the part of the nose projecting beyond said rim, whilst the boundary edges of the facing ends of said nose extend at least substantially perpendicularly to the opposite boundary edges of said nose.
A device according to any one of the preceding claims, characterized in that the wheel-shaped means of display means arranged in side-by-side relationship are mounted on a shaft which is twisted about the central axis.