COVER FOR INSCRIPTION FIELDS
A cover, in particular for covering inscription fields, includes a cover element configured to be inserted into a base body. At least one hooking-in element on the cover element can be engaged with at least one cutout on the base body. At least one latching tab on the cover element can engage with at least one latching opening on the base body, thus making it possible to form a detachable latching connection between the cover element and the base body. The cover element and/or the base body can be at least partially elastically deformed in a direction running parallel to the surface in the area of the at least one hooking-in element and/or in the area of the at least one latching tab and/or in the area of the at least one cutout receiving the hooking-in element, so that the cover element and the base body can be locked to one another by latching in a sprung manner.
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This application is a continuation of U.S. application Ser. No. 11/318,208, filed Dec. 23, 2005, which claims priority to German Application No. DE 10 2004 061 973.5, filed Dec. 23, 2004, the disclosures of which are hereby incorporated by reference herein.
TECHNICAL FIELDThe invention relates to a cover, in particular for inscription fields, as can be used for housings or front panels of electrical appliances or connections.
BACKGROUNDCovers for inscription fields as components of telephone housings are already known and are disclosed, by way of example, in DE 411 0710 C1. This relates to a telephone housing with an insert path which can be moved in a replaceable frame, inter alia locks the cover plate of an inscription field in the operating position, and releases it when moved in the direction of a rest trough. The inscription field may in this case be fitted in a recessed form, in which case a rear edge of the insert part can be pushed over a locking tab on the upper edge of the cover plate of the inscription field for locking, and the rear edge of the cover plate is mounted such that it can pivot on the telephone housing.
Inscription fields which have to be covered do not just occur in the case of telephone housings, however, but are also being increasingly required for industrial purposes, for example for identification of data lines, electrical cables and connections as well as associated housings or front panels. The requirements in this case are comparatively stringent, in particular with regard to optimum installation capability, flexibility, the capability for versatile use, the capability to be operated easily, robust construction and protection against dust or items being used, which requirements have not yet been adequately satisfied by the known covers for inscription fields.
The optimization of covers, in particular for inscription fields, thus represents a problem which until now has not yet been satisfactorily solved by the normal apparatuses known from the prior art.
SUMMARYThe invention is therefore based on the technical problem of providing an improved cover, in particular for inscription fields.
The invention is in this case based on the discovery that the particularly advantageous arrangement of hooking-in elements and latching tabs on a cover element and on an associated base body in conjunction with the characteristic of elastic deformability in a direction which runs parallel to the surface of the cover makes it possible to produce a robust, functional cover, which can be used in a versatile manner and is simple to handle, for inscription fields of any desired type. According to the invention, this is achieved by proposing a cover element, which is provided for insertion into a base body which is in the form of a holder, with at least one hooking-in element being provided on the cover element, which can be engaged with at least one cutout, which is in the form of a hooking-in opening on the base body, and with at least one latching tab being provided on the cover element and/or on the base body, which can engage with at least one cutout which corresponds to the latching tab, and/or is provided on the cover element and is in the form of a latching opening, thus making it possible to form a detachable latching connection between the cover element and the base body, and in which case the cover element and/or the base body can be at least partially elastically deformed in a direction running parallel to the surface in the area of the at least one hooking-in element and/or in the area of the at least one latching tab and/or in the area of the at least one cutout which is in the form of a hooking-in opening, so that the cover element and the base body can be locked to one another by latching in a sprung manner. The surface is in this case either that outer surface of the cover element which faces away from the base body in the latched-in state or that face which bears against the base body in the latched-in state.
In one advantageous embodiment, the cover element is formed from transparent material. The cover is in this case preferably used for fixing and for protection of a label, composed of paper or film for example, and designed to be adhesive or non-adhesive and on which the information to be conveyed to a user by means of the inscription field is provided. In order to allow the user to see this information at any time and in order that it is available to him without having to do anything else, it is advantageous for the cover element to be transparent, being composed, for example, of a transparent plastic such as acrylic glass.
In a further advantageous embodiment, the cover element can be embedded flush in a base body which has a depression and is in the form of a holder. In this case, a trough whose dimensions and shape correspond to those of the cover element is provided as a holder in the base body, and the cover element can be embedded in this trough in the course of the locking process. After being latched in, that surface of the cover element which faces away from the base body then ends flush with the surrounding flat surface of the base body. In addition to a uniform and straight appearance, this also ensures that there are not projecting corners or edges projecting out of the base body to disadvantageously influence the use of the object to which the cover is fitted.
In a further advantageous embodiment, the cover element can be tilted about the at least one hooking-in element after the latching connection has been released, and can be removed from the base body which is in the form of a holder. The tilting movement to be carried out simplifies handling, in particular during locking and/or unlocking of the cover by the user, and makes it easier to fit. Since the cover element is removable, it can be replaced by a new part without any problems, for example in the event of damage or wear.
In one preferred embodiment, the at least one hooking-in element is at least partially wedge-shaped and can engage with at least one cutout (which corresponds to it and is likewise at least partially wedge-shaped and in the form of a hooking-in opening) on the base body. This embodiment is particularly desirable when it is desirable to have a cover which is robust and less delicate, and which can still be locked and unlocked without any difficulties even in severe external conditions, for example where there is an increased incidence of dust or dirt.
In a further embodiment, the cover element has side slots, which originate from the outer edge of the cover element, in the area of the at least one hooking-in element, so that the area of the cover on which the at least one hooking-in element is located can be moved elastically and flexibly transversely with respect to the slot direction. This embodiment also offers the capability for a particularly robust configuration, since the elastic flexibility can nevertheless be ensured by appropriate positioning of the side slots, even if the walls are relatively thick, depending on the dimensions of the cover element. The side slots are in this case preferably incorporated in the area of the cover on which the at least one hooking-in element is located, and which is hooked into the base body before being latched in the course of the locking process. However, it is also feasible for the side slots to be incorporated on the cover element in the area of the at least one latching tab.
In a further embodiment, a hole whose diameter is larger than the slot width is provided at that end of each side slot which is remote from the outer edge of the cover element. This variant offers the advantage that the degree of mobility of the elastically flexible areas of the cover element can be defined as a function of the radius of the holes which are incorporated at the end of the side slots, without having to enlarge or modify the slot width. This procedure is particularly advantageous when it is desirable for the cover to be particularly robust and for the cover element to have relatively thick walls.
In a further advantageous embodiment, at least a portion of the area covered by the cover element can be sealed by means of a seal which is introduced between the cover element and the base body. This results in the cover and the object covered by it being protected against dust, dirt, moisture or other external influences so that it can also be used, for example in an industrial environment or in the open air, without the functionality being restricted.
In a further advantageous embodiment, a rim is provided on the cover element and/or on the base body which is in the form of a holder, which rim is opposite a rim on the base body or on the cover element when in the locked state, and to which the at least one latching tab is fitted, and at least one cutout is provided for unlocking the lock between the cover element and the base body. In this case, the cutout is preferably used to allow a tool, for example a screwdriver, to be fitted simply and without damaging the surfaces or edges of the cover when the cover is in the locked state. This means that the connection between the cover element and the base body can be unlatched, and that the cover element can thus be unlocked from its lock particularly easily owing to the lever effect which can be exerted by means of the tool to release the at least one latching tab from its engagement with the latching opening that corresponds to it.
In a further advantageous embodiment, a force can be exerted on the base body by means of the cover element via a contact tab which is in the form of a stop on the base body and is provided in the area of the cutout which is in the form of a hooking-in opening, in which case, the base body can be at least partially resiliently deformed, thus making it possible to produce a spring force which acts on the cover element via the contact tab. The contact tab which is formed on the base body in this case makes it possible to create a force application point on the base body for movement of the cover element from its latched connection to the base body, thus allowing a bending moment to be exerted in a controlled manner on the elastically deformable area of the base body. This makes it particularly simple and convenient for the user to release the lock between the cover element and the base body.
In a further advantageous embodiment, the cover element is elongated and can be moved in the longitudinal direction in the state in which it is locked to the base body, in order to unlock the lock. In this case, the cover element preferably has a profiled tab, which runs in the transverse direction, on its surface which faces away from the base body and which is preferably domed but can also be flat. This profiled tab allows movement in the longitudinal direction without the use of additional tools, thus making it particularly easy to release the latching connection between the cover element and the base body.
In a further advantageous embodiment, when it is in the unlatched state, the cover element has a bend along its longitudinal direction about a transverse axis which runs parallel to its flat surface. In contrast, in the latched-in state, the cover element is straightened against the curvature direction of its bend by elastic deformation, and is thus prestressed to a certain extent. This leads on the one hand to a label located under the cover being pressed against the body, and being fixed there, by the prestressed cover element, which serves in particular to prevent bends and ripples in the label material, and to prevent the label from sliding. On the other hand, the prestressing means that, during unlocking of the lock between the cover element and the base body, the cover element then tries to relax its prestress and to resume its originally curved position. Thus, once the latching connection has been released, the unlatched cover element then automatically bends away from the base body, and can thus be removed more easily from the depression, which is in the form of a holding trough, in the base body.
In one preferred embodiment, when it is in the unlatched state, the cover element is curved such that at least one outer end of the cover element, which is located in the longitudinal direction, is spread out in a direction which runs away from the base body. In this case, preferably throughout the lateral movement of the cover element which is required to unlock the connection, the hooking-in element at its other end remains engaged with the cutout which corresponds to it and is in the form of a hooking-in opening. The cover element can thus be detached from the base body, and removed from the holder, particularly easily and conveniently.
The invention will be explained in more detail with reference to one preferred exemplary embodiment. In the associated drawings,
- 1a, 1b, 1c Base body
- 8a, 8b, 8c Cover element
- 10a, 10b, 10c Hooking-in element
- 12a, 12b, 12c Hooking-in opening
- 13 Latching web
- 14 Cutout
- 15a, 15b, 15c Latching tab
- 16a, 16b, 16c Latching opening
- 17 Attachment lug
- 18 Centering tab
- 19 Contact tab
- 20a, 20b, 20c Surface
- 23 Side surface
- 24a, 24b, 24c Depression
- 25 Side slot
- 26 Hole
- 27a, 27b Rim of the base body
- 28b, 28c, 28d End wall of the base body
- 29a, 29b Cutout
- 30 Transverse direction
- 31 Transverse axis
- 33 Profiled tab
- 35 Longitudinal direction
- 36 Outer end
- 38 Slot
- 39 Dome
- 40 Opening
Claims
1. An inscription field assembly comprising:
- a base body defining a depression having a first length, a first undercut at a first side of the depression, and a second undercut at a second side of the depression, the base body including a flexible side wall partially bounding the first undercut, the side wall being configured to flex along a direction extending between the first and second sides of the depression; and
- a cover element configured for insertion into the depression of the base body, the cover element including at least one hooking-in tab, which is configured to be inserted into the first undercut in the base body, and the cover element also including at least one latching tab, which is configured to be inserted into the second undercut in the base body, the cover element having a second length extending from a distal end of the hooking-in tab to a distal end of the latching tab, the second length being greater than the first length;
- wherein the cover element is configured to push the flexible side wall of the base body away from the depression until the latching tab of the cover element is aligned with an entrance to the second undercut of the base body when the hooking-in tab is inserted into the first undercut of the base body, whereby inserting the latching tab into the second undercut forms a detachable latching connection between the cover element and the base body.
2. The inscription field assembly as claimed in claim 1, wherein the cover element is configured to be embedded flush in the depression of the base body.
4. The inscription field assembly as claimed in claim 1, wherein the cover element is configured to be tilted about the at least one hooking-in tab to insert and remove the latching tab from the second undercut.
5. The inscription field assembly as claimed in claim 1, wherein the cover element includes two spaced hooking-in tabs.
6. The inscription field assembly as claimed in claim 5, wherein the first undercut of the base body defines an elongated slot extending along the first side of the depression of the base body.
7. The inscription field assembly as claimed in claim 1, wherein the base body defines a cutout at a location along a perimeter of the depression, the cutout being sized to enable a tool to access a perimeter of the cover element when the cover element is inserted in the depression of the base body.
8. The inscription field assembly as claimed in claim 1, wherein the cover element defines an inclined cutout that aligns with the cutout defined at the location along the perimeter of the base body.
9. The inscription field assembly as claimed in claim 1, wherein the flexible side wall includes a contact tab that is pushed by the cover element when the hooking-in tab is inserted into the first undercut of the base body.
10. The inscription field assembly as claimed in claim 1, wherein the hooking-in tab is sufficiently long to push the flexible side wall of the base body when the hooking-in tab is inserted into the first undercut of the base body.
11. The inscription field assembly as claimed in claim 1, wherein the cover element includes a profiled tab extending outwardly away from the depression.
12. The inscription field assembly as claimed in claim 1, wherein the base body includes a rigid side wall partially bounding the second undercut.
13. A cover for covering an inscription field provided in a depression of a base body, comprising:
- an elongate body having a first surface and an opposite second surface, the elongate body being sized to fit within the depression of the base body so that the first surface faces the depression and the second surface faces away from the depression, the cover element being at least partially elastically deformed along a longitudinal axis of the elongate body so that the first surface has a convex curvature;
- a hooking-in tab configured to be inserted into a first undercut at a first side of the depression in the base body;
- a latching tab configured to be inserted into a second undercut at a second side of the depression in the base body; and
- a profiled tab extending outwardly from the second surface of the elongate body, the profiled tab extending transversely to the longitudinal axis of the elongate body.
14. The cover as claimed in claim 13, wherein the cover element is formed from transparent material.
15. The cover as claimed in claim 13, wherein the hooking-in tab and latching tab extend from opposite ends of the elongate body.
16. A method of inserting a cover element over an inscription field of a base body, the method comprising:
- providing a base body and a cover element;
- inserting a hooking-in tab of the cover element into a first cutout defined in the base body at a first side of the depression;
- moving the cover element towards the first side of the depression in a first direction until contact is made between the cover element and a side wall of the base body;
- continuing to move the cover element in the first direction to flex the side wall of the base body away from the depression until a latching tab of the cover element is aligned with a second undercut defined in the base body at a second side of the depression; and
- moving the cover element in an opposite direction to insert the latching tab into the second undercut and to enable the side wall of the base body to unflex until the hooking-in tab is positioned within the first undercut and the latching tab is positioned within the second undercut.
17. The method of claim 16, further comprising tilting the cover element about the hooking-in tab to align the latching tab with the entrance of the second undercut.
18. The method of claim 16, further comprising positioning a label in the depression defined in the base body.
19. The method of claim 16, further comprising removing the cover element from the base body including:
- moving the cover element towards the first side of the depression in the first direction until contact is made between the cover element and a side wall of the base body;
- continuing to move the cover element in the first direction to flex the side wall of the base body away from the depression until the latching tab of the cover element is moved out of the second undercut defined in the base body;
- tilting the cover element about the hooking-in tab so that the latching tab moves away from the depression; and
- removing the hooking-in tab from the first undercut defined in the base body.
20. The method of claim 19, wherein moving the cover element towards the first side of the depression in the first direction comprises inserting a tool into a cutout defined in the base body at a location along the perimeter of the depression and pushing the cover element with the tool.
Type: Application
Filed: Apr 18, 2011
Publication Date: Aug 11, 2011
Applicant: ADC GmbH (Berlin)
Inventors: Ulrich Hetzer (Berlin), Ferenc Nad (Berlin), Frank Mossner (Berlin)
Application Number: 13/088,811
International Classification: G09F 3/18 (20060101); B23P 11/00 (20060101);