DE8317884U1 - HOOK KEY - Google Patents

Description

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Hakensch 1 (eats I

The innovation relates to a hook connector1 for tightening or loosening of rotationally symmetrical and on a thread rotatable, arranged in confined spaces parts, which are provided with recesses, which with a Corresponding hooks on the hook wrench.

Similar keys have already become known that can be used for nuts or sleeves in enclosed spaces are. Here solutions are proposed at which keys with variable mouth openings are to be moved Fully grip the nuts almost completely. If, however, as in the present application in the case of ignition devices for explosive bodies, rubbed cramped Spatial conditions also a limited angle of rotation is available, a hook wrench can be used if the part to be turned is suitable its scope is able to accommodate a large number of recesses for the hook of the key.

The innovation is based on the task of designing a hook wrench so that it can be tightened or part to be loosened securely in a confined space and moved with a selectable torque can.

The object is achieved according to the invention in that the hook wrench has a wrap angle of less than 180, on the hook wrench a spring-loaded wedge in the plane of the looping line like this is pivotably mounted that it forms a counter-bearing to the hook in the applied state with one end face, the hook wrench at the end of the handle

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parallel to the longitudinal axis of the rotationally symmetrical to be moved Part of ve contains 1 opening recess into the A peg-like element of an extension device for the handle of the Ilaken key can be replaced by force is. As an advantageous embodiment, instead of the extension direction of the handle a torque switch key can be used.

An exemplary embodiment is shown in the drawing and is explained below. Show it

1 shows a top view of a hook wrench, FIG. 2 shows a side view of a hook wrench.

In Fig. 1, the hook wrench 1 is shown in its working position on a rotationally symmetrical part 10 which is surrounded by a jacket 11 with a small opening 13. The part 10 is provided with a multiplicity of recesses which correspond to the hook 5 and which lie on one or more circumferential lines in the region of the opening 13. The hook wrench rests on part 10 with a wrap angle 2 of about 100 °. Since the key would slide with its hook 5 out of the corresponding recess when actuated due to the small angle 2, a spring-loaded wedge 3 was provided which, in the applied position, forms a counter-bearing to the hook 5 with its end face 4. In order to obtain the necessary for generating a high torque long lever arm, an extension device 9 is provided, which is equipped with a pin-like element 8 a ^m handle 6 of the hook key 1 inserted in the recess. 7 If, according to an advantageous embodiment of the innovation, a rotary

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Momentsch 1 lissc 1 is used as a Verliingerungso i rir · i chLuiig , the part 10 can be moved with an adjustable and / or measurable torque.

Claims (2)

• ft t BTOl Mg / th 9392 Hook wrench Protection claims Hook wrenches for tightening or loosening rotationally symmetrical and rotatable on a thread, in confined spaces arranged parts that are provided with recesses, which with a hook of the Corresponding hook wrenches, characterized by the following features: - The hook wrench (1) has a wrap angle (2) of less than I80 on - There is a spring-loaded on the hook wrench (1) Wedge (3) pivoted in the plane of the looping line in such a way that it is in the applied state with an end face (4) a counter bearing forms the hook (5) - The hook wrench contains at its handle-side end (6) a parallel to the longitudinal axis of the moving rotationally symmetrical part Recess (7) 5 in a peg-like Element (8) of an extension device (9) of the handle (6) of the hook wrench frictionally can be used. 2. Hook wrench according to claim I _5, characterized in that a torque wrench can be used instead of the extension device (9).