EP0278067A1 - Panel with symbol fields and connections in the corner regions - Google Patents

Abstract

There is a panel in which a carrier plate (2) and a backing plate (1) are combined and in which detachable connecting devices (16, 19) are provided in the corner areas only for connecting the carrier plate (2) and the backing plate (1). In this context it is wished to make the fixed connections in the corner areas of outwardly concealed design without the use of screws. This is achieved in that each connecting device is formed from a sleeve (16) and a spigot (19) firmly wedged therein, which form an integral part of the carrier plate (2) on the one hand and the backing plate (1) on the other. These sleeve-spigot connections are invisible from outside, making it difficult for the uninformed person to detach them. <IMAGE>

Description

The invention relates to a sign in which a support plate and a back plate are put together and are provided with through-holes for at least one fastening screw to be inserted with a head, in which the support plate has windows and transverse webs crossing these, which delimit slots with the window edge, in which in the Window fields are set, which reach through the slots with resiliently bendable legs and reach behind the edge of the slot, in which ribs are provided on the back plate, which project into the slots in the legs, in which the support plate at the through hole via a support projection against the back plate is supported and in which the at least one fastening screw engages behind the shield on a support device and releasable connection devices are provided at the corner regions only for connecting the support plate and the back plate.

The sign gives e.g. Information on the location of water or sewage connections on roads. In a known (DE-PS 10 99 334) shield of this type, the connecting devices in the corner areas are fastening screws and nuts, the screw heads being easily accessible from the front and the connecting devices being able to be loosened easily by unauthorized persons without permission. Four screws with nuts are also required.

It is therefore an object of the invention to provide a sign of the type mentioned at the outset, in which the fixed connections of the corner regions are carried out in an outwardly concealed manner, avoiding screws. The shield according to the invention is solving this problem, characterized in that each connecting device is formed by a sleeve and a pin which is fixedly clamped therein and which, on the one hand, is integral with the carrier plate and, on the other hand, with the rear plate.

These socket-spigot connections are not visible from the outside, so that their solution is difficult for the non-expert. The person skilled in the art can loosen the socket-spigot connection of the shield removed from the supporting device with considerable force using a tool. Screwing devices are avoided, and the socket and spigot are also formed when the carrier plate and the back plate are manufactured.

The press fit of the pin in the sleeve can be achieved by choosing the diameter of the pin slightly larger than the inside diameter of the sleeve. Since this requires tolerance-free production, it is particularly expedient and advantageous if longitudinally formed molded-on ribs of small cross-section are provided between the sleeve and the pin. The ribs equalize tolerances and convey the tight fit of the spigot, which does not actually touch the socket. The ribs are deformed when the pin is pressed in and thus give a very firm, yet releasable frictional connection between the pin and the sleeve.

It is particularly expedient and advantageous if four ribs are distributed over the circumference. The connection between the spigot and the socket is often not very tight with three ribs and a fifth rib is superfluous.

It is also particularly expedient and advantageous if the carrier plate and back plate are in each case Connecting device have an opening and if the pin is provided with an axial bore which connects the two openings. A fastening screw can be inserted through the socket-spigot connection in order to attach the sign to a carrying device.

• Fig. 1 eine Rückansicht einer Trägerplatte eines Felder-Schildes mit Eckbereich-Verbindung,
• Fig. 2 einen Schnitt gemäß Linie II-II in Fig. 1,
• Fig. 3 einen Schnitt gemäß Linie III-III in Fig. 1,
• Fig. 4 einen Teil der Vorderseite der Trägerplatte gemäß Fig. 1,
• Fig. 5 einen Teil der Innenseite der Rückplatte, die zu der Trägerplatte gemäß Fig. 1 gehört,
• Fig. 6 einen Schnitt gemäß Linie VI-VI in Fig. 5,
• Fig. 7 in einem gegenüber Fig. 5 vergrößerten Maßstab eine Einzelheit Y im Schnitt und
• Fig. 8 in einem gegenüber Fig. 1 vergrößerten Maßstab eine Einzelheit X im Schnitt.

It is particularly expedient and advantageous if the opening of the carrier plate is blocked off from the outside by a transverse wall of reduced thickness. The transverse wall gives the sign a closed impression on the outside and can be easily drilled out for the use of fastening screws.

• 1 is a rear view of a carrier plate of a field sign with corner area connection,
• 2 shows a section along line II-II in FIG. 1,
• 3 shows a section along line III-III in FIG. 1,
• 4 shows a part of the front of the carrier plate according to FIG. 1,
• 5 shows part of the inside of the back plate, which belongs to the carrier plate according to FIG. 1,
• 6 shows a section along line VI-VI in FIG. 5,
• Fig. 7 on a larger scale compared to Fig. 5, a detail Y in section and
• Fig. 8 on an enlarged scale compared to Fig. 1, a detail X in section.

The shield according to the drawing is made of a thermoplastic material by injection molding and has a back plate (1), a carrier plate (2), fields, not shown, two fastening screws, not shown, and a support device, not shown, which is designed as a U-shaped bracket which crosses a vertical post, which is arranged between the bracket legs, in which the fastening screws are screwed. The support plate (2) has rectangular windows (3) of different sizes, in which the fields (not shown) are placed, which are provided with signs towards the front and have two legs projecting at right angles to the rear, each of which has a step-like protrusion at the free ends Wear latch. Each window (3) delimits a slot (4) with two opposite edges and each field is pushed with the two legs through the two slots (4) of a window (3), the lugs behind the two window edges delimiting the slots grasping.

On the back of the carrier plate (2), a peripheral ledge (5) is provided on the outside, on which the attached rear plate rests, and a ledge (6) is provided around each window (3), the height of which is perpendicular to the carrier plate is less than the edge of the ledge (5). Each window (3) is spanned by a cross piece (7) which is integral with the support plate (2) and which is at a distance corresponding to the thickness of the window from the front of the support plate and which has a reinforcing ledge (8) at the back of the slot (4). With the exception of an exception described below, each slot (4) is assigned a rib (9). The narrow, elongated ribs (9) are provided in one piece on the back plate (1) and, when the back plate is attached, protrude into the slots (3) between the crosspiece (7) and the leg of an inserted field.

In the central area of the carrier plate (2), the crossbars (7) of only two windows (3) are each provided with a through hole (10) which also extends to an annular support projection (11). which protrudes from the back of the carrier plate at the same height as the ledge (5) on the edge. The through hole (10) is formed in the area of the crosspiece (7) as a larger diameter (12) for receiving a screw head and has in the support projection (11) the diameter to be assigned to the screw shank. The distance between each through hole (10) from the lateral outer edge of the carrier plate (2) is greater than a third and only slightly less than half the distance between the two through holes (10). The position of the through holes (10) is placed on the support device designed as a U-bracket. A through hole (13) of the back plate (1) is assigned to each through hole (10) of the carrier plate (2). As shown in FIG. 5, no ribs are provided at the points (14) assigned to the through holes (3), to which ribs are to be assigned for securing the field. In Fig. 3, a fastening screw (22) with a head (23) is indicated.

The carrier plate (2) has four corner areas (15), in each of which a sleeve (16) is formed on the side facing the rear plate (1). The sleeve (16) has an inner diameter which is larger than that of an opening (17) which is provided in the carrier plate and is covered by the sleeve and which is covered towards the front of the carrier plate by a relatively thin, membrane-like transverse wall (18). The height of the sleeve (16) at right angles to the support plate (2) is the same as that of the ledge (5) on the edge. The back plate (1) has a pin (19) on the side of the ribs (9) in the corner areas (15), which is provided with an axial bore (20) which passes through the back plate and which, when the back plate is attached, has the opening (17) is aligned. The outside diameter of the pin (19), which is circular in cross section, is around one Clearance smaller than the inside diameter of the sleeve (16), which is circular on the inside in cross section. However, the pin (19) has four ribs (21) evenly distributed on the outside around the circumference, which end at a distance from the free end of the pin (19) and of which only two are shown in FIG. 7. The ribs (21) are very small in cross section, fill the last-mentioned game and are so large in the radial direction that the pushed-on sleeve (16) sits tightly and firmly on the pin.

Claims (5)

1.Shield, in which a support plate and a back plate are put together and provided with through-holes for at least one fastening screw to be inserted with a head, in which the support plate has windows and transverse webs crossing these, which delimit slots with the window edge, in which fields in the window are set, which reach through the slots with resiliently bendable legs and engage behind the edge of the slot, in which ribs are provided on the rear plate, which protrude into the slots next to the legs and in which the carrier plate is supported at the through hole by a support projection against the rear plate and in which the at least one fastening screw engages behind the shield on a support device and releasable connecting devices are provided at the corner regions only for connecting the carrier plate and the back plate, characterized in that each connecting device is clamped by a sleeve (16) and one en pin (19) is formed, which are on the one hand with the carrier plate (2) and on the other hand with the back plate (1) in one piece. 2. Shield according to claim 1, characterized in that between the sleeve (16) and pin (19) longitudinally formed ribs (21) of small cross section are provided. 3. Shield according to claim 2, characterized in that four ribs (21) are distributed over the circumference. 4. Shield according to claim 1, 2 or 3, wherein the carrier plate and back plate have an opening in each connecting device, characterized in that the pin (19) is provided with an axial bore (20) which connects the two openings (17). 5. Sign according to claim 4, characterized in that the opening (17) of the carrier plate (2) is blocked off from the outside thereof by a reduced transverse wall (18).

Images