DE1271648B - Key for tightening or loosening nuts, sleeves or the like. - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B25b

German class: 87 a-6

Number: 1271648

File number: P 12 71 648.2-15

Filing date: October 16, 1964

Opening day: June 27, 1968

The invention relates to a key for tightening or releasing the end face not or poorly accessible nuts, sleeves or the like with the nuts or sleeves completely encompassing, split key head.

Such a key has already become known. In this known embodiment for tightening or loosening the nuts, sleeves or the like (hereinafter referred to as screw elements) of the Key head rotated in the circumferential direction with an attachable key arm.

With the key head open, such a key can be perpendicular to the axis of rotation of the one to be tightened or part to be loosened, but required for the swivel range of the key arm Place to turn the key.

The invention is based on the object of a split one that completely encompasses the screw elements To develop a key that is perpendicular to the axis of rotation of the part to be tightened or loosened put on, this can tighten or loosen without pivoting the key arm.

According to the invention, this object is achieved by a key head encompassed opposite the key head rotatable, split insert under external influence. This makes for tightening or loosening screw elements in the area of these elements only requires as much space as is necessary to insert the key. It is no longer necessary to pivot the key arm.

In order to apply sufficient torque to the screw elements with such a wrench to be able to transfer is, according to a further embodiment of the invention, an arranged on the insert, meshes with the worm or bevel gear arranged on (or in) the wrench head upcoming sprocket planned. Further embodiments of the invention are in the remaining Contain subclaims.

In the drawing, an embodiment of the key according to the invention is shown schematically. It shows

F i g. 1 shows a longitudinal section of the key along line I-I in FIG. 2, F i g. 2 is an end view of the key and FIG. 3 is an end view of the insert.

A split key head consisting of key head halves 13 and 14 is arranged on a key arm 11. These key head halves are connected on one side by a joint 14 and on the other side by keys for tightening and loosening
Nuts, sleeves or the like.

Applicant:

Josef Weber,

4600 Dortmund-Aplerbeck, Apierbecker Str. 360

Named as inventor:

Josef Weber, 4600 Dortmund-Aplerbeck

a catch 16, which when the key head is closed in a recess 17 of the key head half 12 releasably locks into place.

A two-part insert 18, 19 (FIG. 3) with an inner profile 21 is received in the key head. The insert 18, 19 is U-shaped on the circumference. One leg 22 of the U-profile is provided with a ring gear 23 (Fig. 1) which meshes with a bevel gear 24 mounted in the key head. That Bevel gear 24 is seated on a shaft 26 that is rotatably mounted in the key arm 11.

• The insert 18,19 is divided so that in the dividing surfaces 31, 32 and 31 ', 32' parting planes 27 lying opposite to the same angle 28 to the axis of rotation 29 to have. The insert parts 18 and 19 are supported by a spring 33 let into the separating surfaces 31 and 32 (mutually movable) connected. Grooves 34 and projections 36 in the parting surfaces fit positively into one another and ensure that the insert parts 18 and 19 are perfectly assembled.

It is conceivable to provide a key according to the invention with replaceable inserts, their Width across flats and / or height is adapted to the respective screw elements to be screwed.

Correspondingly shaped inserts also allow tightening or loosening of parts that have an im have substantially cylindrical surface, such as the z. B. is often the case with pipe connections.

Claims (7)

Patent claims: 1. Key for tightening or loosening parts that are difficult or impossible to access at the front Nuts, sleeves or the like, with the nuts or sleeves completely encompassing, split Key head, characterized by one encompassed by the key head (12, 13), 809 567/165 with respect to the key head (12, 13) rotatable under external influence, split insert (18.19). 2. Key according to claim 1, characterized by one on the insert (18, 19) arranged, with worm or bevel gear (24) arranged on or in the wrench head (12, 13) in Engaging the incoming ring gear (23). 3. Key according to claims 1 and 2, marked by one through the key arm (11) guided bevel gear shaft (26). 4. Key according to claims 1 to 3, characterized by one on the circumference U-Pronl having insert (18, 19) with a width of the key head (12, 13) corresponding Web width. 5. Key according to claims 1 to 4, characterized in that the inner surface of one of the angled edge portions of the insert (18, 19) is provided with a toothed ring (23). 6. Key according to claims 1 to 5, characterized by corresponding adjustment pins or springs (33, 36) and lustier bores or grooves (34) in or on the one another pivotable surfaces (31, 32 and 31 ', 32') of the insert (18, 19) and / or key head halves (12.13). 7. Key according to claims 1 to 6, characterized in that in the parting surfaces (31, 32 and 31 ', 32') lying parting planes (27) opposite the same angle (28) to the axis of rotation (29) form. Considered publications:
U.S. Patent Nos. 1478,668, 2522428, 2609719, 2847-888. - For this 1 sheet of drawings 809 567/165 6.68 © Bundesdruckerei Berlin