DE29800189U1 - Screwdriver with driven key head - Google Patents

Description

Screwdriver with driven wrench head

The invention relates to a screwing device with a wrench head driven in the manner of a flat drive, in which the rotating or ratchet-like drive movement introduced by hand or machine is transmitted via an adapter arranged in the device head to the gear drive of the flat drive and further to the wrench head.

Screwing devices of the type described above are known in principle and have already found a proven application in assembly operations. They are primarily used where there is not enough space to handle the usual open-end, ring or socket wrenches and/or where access to the nut or screw head is partially structurally blocked or not possible directly. In addition, such screwing devices are used to tighten or loosen screws and nuts with high torque, which cannot be operated with the usual means due to space constraints.

Particularly in aircraft and vehicle construction and other areas of assembly, where mechanical or electrical units and components are housed in the tightest of spaces and direct, free access to the screw links is often only possible to a limited extent, screwing tools or screwing devices designed in this way have application-specific designs. For example, they can be designed to be straight or angled in the two possible spatial planes and/or equipped with a flat output shaft with different lengths. In addition, efforts were made to minimize the width of the output shaft while ensuring appropriate stability in order to largely meet the requirement of saving space in this respect too.

Nevertheless, it turns out that during warning and maintenance work, various components must first be removed because the structural conditions and the handling options of these screwing tools still leave something to be desired in order to work freely and cost-effectively.

The purpose and task of this innovation arises from these circumstances. The purpose is to provide a screwing device of the type described above, which meets the requirements of a more flexible application in

the assembly even better, whereby the task is seen as being able to adapt the adapter in the device head more effectively to the respective space conditions during the screwing process in a simple manner.

This object is achieved by applying the technical design features characterized in the protection claims by providing a screwing device with a driven wrench head, in which, in addition to the application-specific designs mentioned, the adapter is designed to be pivotable in relation to the drive nut in a detent-like manner.

This makes it possible to position the adapter in a spatially offset position in the swivel plane relative to the flat drive and thus to the wrench head, in order to be flexible in terms of positioning the screw driver in installation locations that are difficult to access.

The present innovation will be explained in more detail using the example embodiment explained below with the help of a drawing.

The drawing represents

Fig, 1 the side view of the screwing device partly in section according to

Line I -1 in Fig. 2 and in
Fig. 2 the top view of the grid-shaped flange part of the

Receptacle sleeve according to line Π - Π in Fig. 1
represents

The screwing device 1 is composed in a manner known in principle of a sleeve-shaped base body 3 enclosed by an adapter 2 serving as the device head part, as well as a flat drive 5 which accommodates the gear drive for the wrench head 4 and is firmly mounted on the base body 3.

The drive of the wrench head 4 of the screwing device 1 is also carried out in a known manner by hand or mechanically by a drive element 6 designed as a lever or motor shaft, which is fixed in the adapter 2 by means of a form or

Force connection, is conveniently held in a recess 7 and whose drive transmission element 8 is connected to the drive sleeve 9 in a driving manner, e.g. by form-fitting. The drive sleeve 9 carries the spur gear 10 on the output side, through which the drive movement of the drive sleeve 9 is in turn transmitted to the flat output 5.

In order to design a screwing device 1 designed in this way for more universal use and to make it more versatile, the adapter 2 can be pivoted relative to the base body 3 in both directions and can be conveniently locked and secured in several positions. For this latter purpose, the base body 3 has several radially machined and axially extending locking grooves 12 in its flange part 11 serving as a locking disk, into which a locking finger 13 of a locking bolt 15 movable in a guide 14 engages in a locking position in a selected locking position, as shown in Fig. 1 and Fig. 2.

The locking bolt 15 is under the influence of a spring 16, which can hold it in the locking position. A hook-like handle 17 serves to move the locking bolt 15 out of the locking position if desired, in order to be able to pivot the adapter 2 in the direction of arrow "E" or "F" and thus at the same time to move the drive element 6 together with the adapter 2 into a different spatial position relative to the flat output 5.

Claims (2)

08-&Pgr;1.&Ogr;:::: Protection claims 1. Screwing device with a wrench head driven in the manner of a flat drive, in which the rotating or ratchet-like drive movement introduced by hand or motor is transmitted via a wrench nut arranged in the device head part and covered by an adapter to the gear drive of the flat drive and from there via a gear drive to the wrench head, characterized in that the adapter (2) covering the drive sleeve (9) and the base body (3) is designed to be pivotable about its longitudinal axis (A) in both pivoting directions (E-F) imposed on it and can be locked in a preselected locking position by a locking bolt (15) that can be moved on the adapter (2) and which can engage in a flange part (11) of the base body (3) that serves as a locking disk and is provided with locking grooves (12). 2. Screwing device according to claim 1, characterized in that the angular distance of the locking grooves (12) is 15° or a multiple thereof.