The present invention relates to a label-holder element for electrical cable wires.
It is known, in the technical sector relating to the construction of switchboards for the wiring of electrical installations, to use terminal blocks adapted to be mounted on associated mounting rails and to provide access on the front to the means—normally of the screw type—for retaining the electrical connection wires which form the electric circuit.
It is also known that, owing to the increasingly greater complexity of electric switchboards, it is necessary to mount on each electric wire a corresponding identification label which must be visible at the front for reading by the user.
It is also known that on the market there exist different types of wires which each have a different cross-section, so that it is not possible to standardize the different types of labels, as well as different types and sizes of writing to be applied on them.
Examples of the prior art are described in DE 85 06 254 U1 and DE 20 2004 010070 U1.
The technical problem which is posed therefore is that of providing a label-holder element which is able to allow easy and safe coupling with/uncoupling from different types of electrical wires, while ensuring the features of safety, prevention of accidental removal of the label and good visibility of the label by the user.
In addition it is also desirable to achieve a greater standardization of the label and the associated writing.
In connection with this problem it is also required that the label-holder element should be easy and low-cost to produce and that it may be quickly mounted on/removed from the electrical wire.
These results are obtained according to the present invention by a label-holder element according to the characteristic features of claim 1.
The label-holder element for electrical wires, comprises a body extending in a longitudinal lengthwise direction, transverse widthwise direction and vertical thickness direction; and at least one pair of teeth extending outwards from the rear surface in the vertical direction for coupling with an electrical wire.
The body comprises a front face provided with a seat for a label, side faces opposite to each other in the transverse direction, a rear face opposite to the front face in the vertical direction. The seat has a top edge and a bottom edge which extend in the transverse direction, are arranged opposite each other in the longitudinal direction and are formed so as to engage and retain a label.
The teeth of one pair for coupling with a wire have a free end directed towards the other tooth in the transverse direction and are arranged staggered in the longitudinal direction for mounting on/coupling with a wire.
Preferably, the label engaging edges are formed in the manner of a respective tooth, each tooth forming a corresponding undercut towards the inside of the seat.
Each tooth of the seat may extend over the entire width of the seat in the transverse direction and/or have a rounded edge directed towards the inside of the said seat.
The rear face of the body may be bounded by opposite transverse edges and at least one pair of coupling teeth may extend outwards in the vertical thickness direction from the opposite transverse edges of the rear face of the body.
The two teeth of the pair are preferably elastically deformable in the transverse direction and/or have a respective chamfered free end.
According to a preferred embodiment, the element of the invention comprises a longitudinal rib which extends in the longitudinal direction for connecting together the free ends of the coupling teeth of a pair and with them defines an open space in the longitudinal direction for allowing mounting of the label-holder element on a wire or vice versa insertion of the wire in the label-holder element.
Preferably the label-holder element comprises at least two pairs of teeth for coupling with a wire, which are spaced from each other in the longitudinal direction, and said longitudinal rib connects the free ends of all the coupling teeth.
The seat may have lateral flanks open in the transverse direction for inserting the label from one side or the other side in the same transverse direction.
At least one relief may extend in the vertical direction on the front surface of the seat; the at least one relief is preferably arranged in a central position with respect to the transverse extension of the seat.
The front surface of the seat may comprise a depression.
Further details may be obtained from the following description of non-limiting examples of embodiment of the subject of the present invention, provided with reference to the accompanying drawings, in which:
As shown in
Each tooth forms a corresponding undercut 23. Preferably said teeth 21,22 arranged opposite each other have an edge 21a,22a suitably rounded to facilitate insertion frontally of the label 30 (
Although not shown, according to preferred embodiments the front surface of the seat 20 is provided with a depression for allowing the label to bend with an inwards convexity in order to facilitate insertion and engagement inside the opposite undercuts of the seat.
According to preferred embodiments at least one relief 25 is formed (
According to further embodiments the relief 25 is designed to be inserted inside a corresponding seat (not shown) of the label 30 so as to prevent any sliding thereof and/or prevent it from coming out in the transverse direction Y-Y.
In the embodiments with a depression of the seat 20 two reliefs 25 are arranged on the outside of the depression and symmetrically relative thereto in the longitudinal direction X-X.
The rear face 410c of the label-holder element is provided with means for coupling with supporting devices on which an identification label 30 must be mounted.
The supporting devices consist of an electrical connection wire 200 (
The means 440 for coupling the label-holder element on the wire 200 comprise at least one pair of teeth 441 extending outwards in the vertical direction Z-Z, preferably elastically deformable in the transverse direction Y-Y and suitable for coupling with the electrical wire 200.
With reference to the first embodiment 410 of the label holder according to the invention, it is also envisaged that the at least one pair 440 of teeth 441 extend outwards in the direction of the thickness Z-Z, preferably in the proximity of and/or along the opposite transverse edges of the rear face 410c of the label-holder element; the two teeth 441 of the pair have a free inner end 441a and are arranged staggered in the longitudinal direction (X-X); this configuration is particularly advantageous for production by means of molding in order to reduce the movements of the mold and facilitate extraction of the finished part.
Preferably the rib extends longitudinally until it connects the first pair of teeth 440 to the free ends of at least one further pair of teeth 440 arranged spaced from the first pair in the longitudinal direction X-X, in the example to the opposite longitudinal end of the face 410c.
In the embodiment shown in
As shown, the label-holder element has a laterally open seat 20 which allows insertion/extraction of a label 30 also from the sides and both from the right and from the left (
In the specific application it is also possible to provide labels without a recess for engagement with the relief 25 since the force applied by the relief on the label causes an elastic deformation (
It is therefore clear how the label-holder element according to the invention is easy and low-cost to produce and is able to form a versatile assembly which may be easily mounted on different types of electrical wire in a stable and therefore safe and reliable manner owing to coupling elements extending from the rear face. The particular structure of the label-holder seat contributes to the formation of a very versatile element, also allowing the use of substantially flat standardized labels which have a uniform thickness and are made using different plastic and/or paper materials.
Although described in connection with a number of embodiments and a number of preferred examples of embodiment of the invention, it is understood that the scope of protection of the present patent is determined solely by the claims below.
Number | Date | Country | Kind |
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102015000063843 | Oct 2015 | IT | national |