Buckles – buttons – clasps – etc. – Clasp – clip – support-clamp – or required component thereof – With specific mounting means for attaching to rigid or...
Reexamination Certificate
1999-08-04
2001-04-17
Sakran, Victor N. (Department: 3626)
Buckles, buttons, clasps, etc.
Clasp, clip, support-clamp, or required component thereof
With specific mounting means for attaching to rigid or...
C024S457000, C024S459000, C024S293000, C248S068100
Reexamination Certificate
active
06216320
ABSTRACT:
TECHNICAL FIELD AND BACKGROUND OF THE INVENTION
The invention relates to a cable holding arrangement with a holding plate as used in switch cabinets, for example. The cables led in must be secured mechanically in front of their electrical connection points, and there often must also be a ground connection with the cable shielding. To this end, the cable is stripped in a known way in the holding area up to the cable shielding after which there is a fastening to a metal rail by means of a screw terminal or collar.
One of the drawbacks of this conventional fastening means is that screw holes must be drilled to fix the screw terminal or collar, and screw fastening involves a not inconsiderable amount of labor. A subsequent shift in the fastening point is a complicated matter and also entails a major amount of work. Since the cables to be fastened usually have different diameters, different-size screw terminals or collars must be provided. Another drawback is that the minimum space between cables to be fastened is not inconsiderable because of the holding tabs of the screw terminals or collars to be screwed tight so that an often desirable fastening of the cables right to each other is hardly possible.
SUMMARY OF THE INVENTION
The object of the invention is thus to provide a cable holding arrangement that makes cable fastening and loosening possible without considerable mounting effort.
This object is achieved according to the invention by a cable holding arrangement with a holding plate having a plurality of similar holding openings arranged next to each other in a row, with at least one holding clip that has two plug feet connected with each other through a holding area for insertion in two of the holding openings and which forms a U-like arrangement in the plugged-in condition by means of which a cable to be secured can be clasped and pressed onto the holding plate, the plug feet having an arrangement for locating with the holding openings.
The particular advantage of the invented cable holding arrangement is that, to secure the cable, only one holding clip has to be mounted in a way that its two plug feet engage a holding opening on both sides of the cable.
Location and securing of the cable is automatic on insertion. Selection of the cable fastening point can be practically anywhere because of the many holding openings that are arranged next to each other in a row. Depending on the diameter of the cable to be fastened, the holding clip can used in two holding openings arranged next to each other or in two that are spaced farther apart.
Advantageous developments and improvements with respect to the cable holding arrangement indicated in claim
1
are possible with measures that are given in the subordinate claims.
The holding openings are preferably designed as parallel slots in order to ensure a wide and reliable fixing of the suitable shaped plug feet.
The holding clip is preferably designed as a flexibly sprung arrangement, the plug feet to be pressed toward each other for insertion in the two holding openings being spring-mounted in the inserted condition on the most widely separated outer edges or edge areas of the two holding openings.
The holding clip can be disengaged and loosened in a simple way by pressing the two plug feet together. The flexibly sprung arrangement of the holding clip ensures adjustment to cables with different cross-sections.
For reliable location, the two plug feet have stop projections and/or stop recesses pointing in opposite directions designed for locating with the outer edges of two holding openings. The outer edges thus act as counter-locating means for the stop projections and/or stop recesses.
Each plug foot will preferably have at least one row of stop teeth running in the plugging direction so that locating will take place with practically any insertion depth. This helps considerably to make it possible for a single kind of holding clip to be used for quite different cable diameters.
In a further advantageous development, the stop teeth have tooth ramps that facilitate insertion on their side pointing in the direction of insertion and tooth edges that are essentially vertical on the other side. In this way, the holding clips can be pressed against the cable following insertion of the plug feet into two holding openings, which provides in a simple way for clamping and reliable location. Production of the holding clips is especially simple and economical in that they are preferably designed as a one-piece stamped and bent part made of sheet metal.
An even better adjustment to different cable diameters and a more reliable fixing of the clamp is achieved in that a holding spring arrangement, which is flexibly held against the cable to be held when the holding clip is in the inserted condition, is formed on the holding area. The holding spring arrangement is preferably designed as a one-piece metal strip formed on the holding area and extends from one edge of the holding plate along the underside of the holding area pointing in the inserted condition toward the holding plate.
In an alternative advantageous development, the holding area is designed as a tension spring that preferably has a flat shape. This development is especially suitable for cables with very large diameters, the design of the holding plate as a tension spring also achieving very good adjustment to the cross-section of the cable to be fastened. This kind of holding clip can also be used, for example, to secure a number of cables in place together.
In a simple development, the holding plate has a U-shaped cross-section, the holding openings being arranged on the connection cross-piece between the strip-like U-legs. In an improved development, these holding elements are arranged in the middle area of the connection cross-piece, and holding elements with a T-shape in particular are formed on the two side areas. With these holding elements, isolated areas on both sides of the insulated area can also be fastened with holding strips, tapes or wires. To adjust to the reduced cross-section of the cable in the stripped area, the plane of the middle area of the connection cross-piece is preferably displaced relative to the two side areas toward the side facing away from the U-legs, particularly by a value equal to the thickness of the insulation layer so that the cable can be secured linearly.
In a further advantageous development, the holding plate is provided on one side with a with a mount for clamping attachment on a bearing rail or a mounting cross-piece on the opposite side with the holding openings. The mount is preferably designed as a bent over end area of the holding plate.
This kind of holding plate can thus be clamped or located in a very simple and rapid way on an existing bearing rail or an existing mounting cross-piece so that it can be provided later at the required point with this kind of holding plate that can also be displaced.
The mount for clamping location is designed with a stop strip arranged in particular on a U-leg of the bearing rail or of the mounting cross-piece.
This kind of stop strip is often present in any case on conventional bearing rails or mounting cross-pieces.
The holding plate and the at least one holding clip consist at least in part of an electrically conductive material, especially metal, so that a grounding connection with the cable shielding of the cable is established when fastening is carried out by means of the holding clip.
REFERENCES:
patent: 3042352 (1962-07-01), Stamper
patent: 3802654 (1974-04-01), Jenko et al.
patent: 4323378 (1982-04-01), Miljoen
patent: 4679754 (1987-07-01), Richards
patent: 5149026 (1992-09-01), Allen
patent: 5149027 (1992-09-01), Weber
patent: 5593115 (1997-01-01), Lewis
patent: 5922961 (1999-05-01), Viklund et al.
patent: 0221618 (1962-06-01), None
Adams, Schwartz & Evans P.A.
Friedrich Lutze Elektro GmbH
Sakran Victor N.
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