DE2354121A1 - Socket spanner with ratchet coupling - has outer part with large inertia which acts as flywheel - Google Patents

Abstract

The spanner consists of an outer nut and an inner socket or an inner square on which a socket can be mounted. The inside bore of the nut is provided with ratchet teeth, while one or more ratchet pawls are mounted on the square mounted inside the nut. The nut has large inertia so that it is often possible to tighten or loosen nuts by hand. Additional tightening torque can be obtd. by placing a conventional spanner over the nut. The inner square on which sockets can be mounted can extend either side of the nut, and it is retained in position by side plates.

Description

BLUMBACH ■ V / EBER> BERGEN & KRAMER

. PATENT LAWYERS IN WIESBADEN AND MÖNCHEN 23541 21

DiPL-ING. P. G. BLUMBACH · DfPL-PHYS. Dr. W. WESER · DfPL- [NG. DR. JLfR. P. BERGEN DIPL-ING. R. KRAMER

WIESBADEN - SONNENBERGER STRASSE 43 ■ TEL (06121) 562943, 501998 MÖNCHEN

Renato Moerlini
Peseux (Switzerland)

Socket wrench with lock

Nuts or bolts in hard-to-reach places "Located, can often only be attracted with difficulty or be resolved. Often he is also around the mother or her Screw head existing space too small for a normal one Use wrench.

It is therefore the object of the present invention to provide a Socket wrench with locking mechanism to propose with the help of it all places accessible by hand can be reached.

Such a socket wrench consists of two rotatable, coaxial parts that are connected by a locking mechanism are, where one element is directly or indirectly linked to the engages to be tightened or loosened part, while the other element is rotated by hand. The socket wrench is

.509818 / 0235

further characterized by the fact that the latter element is an increased principal moment of inertia on v / e and thereby forms a swing fragment.

The invention is intended below on the basis of exemplary embodiments with reference to the accompanying drawings are explained in more detail. In the drawings show:

Fig. 1 is a view;

FIG. 2 shows a section along the line II-II of FIG. 1 j

and
Fig. 3 is a partially sectioned view accordingly

1 to illustrate an accessory.

The socket wrench shown in the drawing is intended for use with a nut that is on one side Square female attack element and on the other side Polygon or groove inner attack element has for Recording of the screw head to be tightened or loosened or the mother.

The socket wrench consists of a square 10, from one Insert 11, in which the square 10 can be held in two axial positions by ball locking members 12 through two side walls 13 attached to the insert 11 through

509 8.18 / 0235

a ring designed as a hexagon on its outside 14, which is freely on a wing of the insert 11 between the side walls 13 is rotatable by a freewheel mechanism consisting of a pawl attached to the insert 15 and a ratchet wheel 16 formed by the inner wall of the ring 14, the freewheel mechanism doing the conversion an intermittent rotational movement of the ring 14 Allowed in an intermittent feed movement of the square 10.

The ring 14 has a considerable moment of inertia, so that when turned by hand there is a sufficiently high moment of force available to tighten or loosen nuts, bolts or similar parts with normal tightening torque. _ - -, _

If necessary, tightening or loosening can also be done with With the help of an open-ended wrench that engages the hexagon, take place.

The proposed socket wrench includes an accessory (Fig. 3), consisting of an attachment 17, which is slipped over the hexagon of the insert 11, and the itself has a hexagon 18 with a small diameter,

5098 18/0235

(P

With the help of this accessory, which can be knurled on the outside to increase the grip, it is possible to

a) to increase the inertia of the flywheel, and

b) to use an open-end wrench with a small opening for tightening and loosening.

The proposed socket wrench has numerous advantages, especially that it can be used wherever there is manual access is possible, can be used and thus a valuable gain in time when loosening and tightening bolts and screws etc. permitted.

509818/0235

Claims (4)

BLUMBACH · WESER · BERGEN & KRAMER PATENT LAWYERS IN WIESBADEN AND MUNICH 2 3 b H! ■ £ I DIPI ..- ING. P. G. BLUMBACH - DIPL.-PHYS. Dr. W. WESER DIPL.-ING. DR. JUR. P. BERGEN DIPL-ING. R. KRAMER Ä2 WIESBADEN - SQNNENBERGER STRASSE 43. TEL. (06T21) 5i2? 43,5iI? 98 MÖNCHEN P a t e η t a η s ρ r ü c h e 1.y Socket wrench with locking mechanism to reach all manually accessible places, consisting of two coaxial rotatable elements that are connected by a locking mechanism, whereby one element acts directly or indirectly on the part to be tightened or loosened, while the other element by hand is operated, thereby marked in ze ic h η et that the latter element has an increased inertial main moment, and thereby constitutes a flywheel. 2. Socket wrench according to claim 1, da d u r c h g e k e η η ζ e i c h η e t, that that directly or indirectly to the part to be tightened attacking element is a square, while the second element, which has a large moment of inertia, is a hexagon. 509818/023 5 3. Socket wrench according to claim 1,
characterized in that an attachment is provided which is attached to the element having a large moment of inertia. 4. Socket wrench according to claims 1 to 3, characterized by gekennz.eich.net, that the attachment is integrally connected to a hexagon which has a smaller diameter than the element with large moment of inertia. 509818/0235