Cable pulling aid with rotating outer shells and optional manual or machine drive

Abstract

Cable pulling aid for pulling wires or cables into conduits, comprising a housing and a flexible pulling tape received in the housing, characterized in that the housing consists of two outer shells rotatably designed relative to each other and a substantially stationary middle section with handle arranged between them, wherein the outer shells are rotatably designed relative to the middle section and rotate together when the pulling tape is wound up or unwound, while the middle section remains essentially immobile.

Description

Technical field

[0001] The invention relates to a cable pulling aid for pulling wires or cables into conduits, particularly in the field of electrical installations in buildings. State of the art

[0002] Cable pulling aids are known from the prior art that use flexible pulling tapes which are manually inserted into conduits or wound onto simple drums. These known designs are often exclusively designed for manual operation, have limited sliding properties, or do not allow the use of power tools such as cordless screwdrivers or drills. Object of the invention

[0003] The invention is based on the objective of providing a cable pulling aid that can be operated both manually and mechanically, enables easy handling and is structurally simple and robust. Description of the invention

[0004] The cable pulling aid has a housing in which a flexible pulling tape is contained.

[0005] The housing consists of two opposing outer shells, which are rotatable relative to an intermediate central piece.

[0006] The center section is stationary and features an integrated handle by which the cable pulling aid can be held and guided.

[0007] The outer shells are arranged in such a way that they perform a rotary movement during operation of the cable pulling aid, while the middle piece remains essentially stationary.

[0008] The pull tape is located inside the housing and is wound up or unwound during operation of the cable pulling aid.

[0009] The rotational movement of the outer shells occurs without separate rolling or sliding bearings, but via directly formed sliding surfaces between the components.

[0010] The cable pulling aid is designed so that it can be operated either manually or mechanically.

[0011] For this purpose, a drive interface is provided, via which either a manual operating device or a mechanical drive can be connected. Advantageous embodiments of the invention

[0012] In an advantageous embodiment of the invention, the outer shells consist of a plastic with good sliding properties, in particular a plastic based on polyoxymethylene (POM), preferably with a PTFE component.

[0013] In a further advantageous embodiment, the middle section is made of a robust plastic, in particular acrylonitrile butadiene styrene (ABS).

[0014] The pull-in tape is preferably designed as a flexible fiberglass tape and is arranged in the housing of the cable pull-in aid.

[0015] The pull-in tape is inserted into the housing and secured by screwing the housing parts together.

[0016] It is designed to be removable and replaceable, although replacement is not intended for regular operation.

[0017] In a further embodiment, the cable pulling aid is equipped with an adapter that enables machine operation.

[0018] The adapter is preferably designed as an elongated adapter, in particular as a hexagonal adapter, and has a first section for insertion into the cable pulling aid and a second section for insertion into an electrically operated tool, in particular a cordless screwdriver or a drill.

[0019] The adapter can be designed so that it can be used for both a manual actuation device and a machine drive.

[0020] Furthermore, the cable pulling aid may have a removable stand that allows for stable positioning during operation.

[0021] The described configurations can be implemented individually or in any combination. Brief description of the drawings Fig. 1 a front view of a cable pulling aid according to the invention, Fig. 2 a side view of the cable pulling aid according to the invention, Fig. 3 a rear view of the cable pulling aid according to the invention, Fig. 4 A perspective view of an adapter for manual or machine operation of the cable pulling aid.

Claims

[1] Cable pulling aid for pulling wires or cables into conduits, with a housing and a flexible pulling tape held in the housing, characterized by , that the housing consists of two outer shells rotatable relative to each other and an essentially stationary middle section with a handle arranged between them, wherein the outer shells are rotatable relative to the middle section and rotate together when the feed belt is wound up or unwound, while the middle section remains essentially immobile. [2] Cable pulling aid according to claim 1, characterized by , that the rotational movement of the outer shells takes place without separate rolling or sliding bearings, but via directly formed sliding surfaces between the components. [3] Cable pulling aid according to claim 1 or 2, characterized by that the outer shells consist at least partially of a slippery plastic. [4] Cable pulling aid according to one of the preceding claims, characterized by , that the retraction tape is inserted into the housing and fixed by joining the housing parts together. [5] Cable pulling aid according to claim 4, characterized by that the retractable tape is designed to be removable and replaceable. [6] Cable pulling aid according to one of the preceding claims, characterized by that it can be operated either manually or by means of a mechanical drive. [7] Cable pulling aid according to claim 6, characterized by , that a drive interface is provided to which an adapter for manual or machine operation can be attached. [8] Adapter for operating a cable pulling aid, characterized by that the adapter has a first section for insertion into the cable pulling aid and a second section for insertion into a manually operated or electrically powered tool. [9] Cable pulling aid according to one of claims 1 to 7 in combination with an adapter according to claim 8.

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