DE1811571B2 - Ratchet wrench - Google Patents

Description

3 4

Two abutting side surfaces 6 are accommodated by a projection 8 and a recess

forms, of which the outer is shortened. The tangle 9 arranged, which for the third limitation

and thus the advantages of the inventive surface 7 are directed towards or away from it. In the

The projection 8 is a ratchet wrench with this illustrated embodiment

known key cannot be reached. 5 designed so that a first contact surface 5 for

Further advantages and features of the invention er opening 2 with respect to di g__ a second Aniage-

result from the following description of a surface 6 inwards from gp-sytyt is ~ hif · recess 9 "is

Embodiment based on the drawing. Developed in such a way that the other first analysis

shows surface 5 to opening 2 with respect to the other

F i g. 1 is a detail from a plan view of the second contact surface 6 offset outwards.

a ratchet nut wrench according to the invention. 1 shown nut wrench 1

in an engaged position for rotating a nut, in that indicated by the arrow direction 10

Fig. 2 is a view similar to Fig. 1 moved in a different direction of rotation, so a dash-dotted line is

ren engagement position. drew hexagon nut 11 in the same direction of rotation

The drawing in FIG. 1 a nut wrench 15 taken along. Without being lifted from the nut 11, FIG. 1 can be seen to become a mouth or an opening 2, the wrench 1 can have jaws 3, 4 in the same. The jaw 3 can be pivoted away from the direction of rotation indicated by the direction of arrow 12 and through (not shown) towards it, whereby it can be moved practically freely around the known means. The jaws 3 and 4 of the nut 11 runs around or rattles and has reached parallel first contact surfaces 5 as well as a new clamping position on it,
tere subsequent second contact surfaces 6, which with- F i g. 2 shows a mutual engagement position on the nut 11 that can be achieved by means of the wrench 1 and with the first contact surfaces 5 enclose an angle. The nut wrench 1 has From the above, a third delimiting surface 7 is readily apparent, in that the described nut wrench is arranged in an angle with a single pull on the first and second contact surfaces 5, which is extremely economical the supply allowed, a very comfortable and at the same time second contact surfaces 6 is located, which connects them to reliable handling with perfect Einspand this way. In the areas between voltage and release of the element to be rotated, first contact surfaces 5 and the second contact surfaces are possible.

1 sheet of drawings

Claims (2)

1 2 open-end wrenches known, each of which has jaws, which together form four contact surfaces that are connected to one another according to the outline of the nut. 1. Ratchet wrench with two, through the. Each of these areas is shortened by one to enable a jaw opening arranged separately from one another 5 ratchet movement. From the slipped Jaws, with one jaw being a slight base at the free ends of the two together with a first contact surface and a jaw, surfaces receding outwardly angeim Angle to this standing retaining lug one works, in one case by rounding, in the other V-shaped receptacle for a corner of a nut by chamfering outwards. Both types of and the other jaw a second ania- io keys are only vergefläche for a single nut size has, which can be turned when tightening the nut. Furthermore, the key is after the in attachment to a side surface of the mother US-PS 1341178 given the risk that the advice comes the one touched by the holding nose see the key slipping from the mother, since he is so is parallel, characterized, must be withdrawn far that no safe that the jaws (3, 4) each embrace more on the inner sides 15. With the key after the their free ends parallel, opposite one another, US Pat. No. 1,138,572, there is no risk of this Have low third contact surfaces, which is the third available for the ratchet movement Contact surface (5) on the one jaw (4) moving space so tight that the nut can clamp on the retaining lug (8) and on the other jaw and / or their edges or those of the (3) One between her and the second key can be worn out quickly. location surface (6) arranged recess (9) on- The object of the invention is a ratchet nut closes, and one of the jaws in its distance tern key of the type described above on the other hand is adjustable. create a lightweight and with a simple structure 2. Ratchet nut wrench after tightening different nuts Claim 1, characterized in that the holding 25 allows size. nose (8) between the third contact surface (5) According to the invention, the object is thereby achieved and the second contact surface (6) releases in such a way that the jaws each on the inner sides of their is designed that the third contact surface (5) free ends parallel, opposite third to the opening (2) with respect to the second contact surface, the third contact surface (6) is stepped inwards. 30 face on one cheek against the retaining lug and on the other jaw to a recess arranged between it and the second contact surface connects, and one of the jaws is adjustable in its distance to the other. 35 With the key according to the invention, within the scope of its adjustability, nuts of the The invention relates to a ratchet nut of various sizes at least in the manner of one wrench with two, through an opening of a normal open-end wrench between the two parander separately arranged jaws, one of which grips and moves allelic end faces. Of the Baking a key together with a first contact surface 40 is therefore versatile. Also for and a holding lug at an angle to this the size of the nut, for which it acts as a ratchet wrench If a V-shaped receptacle is designed for a corner of a nut, it can be at the largest stage and the other jaw forms a second contact force requirement, i.e. during the final tightening has surface that when tightening the nut in or when first loosening with two parallel plant system comes to a side surface of the mother, the 45 surfaces are used attacking. There are found is parallel to the one touched by the retaining lug. with the keys according to US Pat. No. 3,252,359 Such a ratchet nut wrench is known from and DT-PS 890780 also at the free ends of US-PS 3,252,359. This key shows the jaws parallel contact surfaces. In both cases, however, such stepped jaws on their inner area are not provided that a nut is suitable for the tightening of hexagon nuts in 50 between these two surfaces, finally, three specific sizes. It is only the middle size in one position for and the force to be applied to move it, for the two other of these two surfaces transferred to the nut whose sizes are in the opposite position, that is, with which it should be. In each case one of these surfaces closes the opposite surface upwards, to be applied. For an angle of 120 ° to a further contact, all three sizes, it is possible to move the wrench in area, i.e. with this one corner of a Rieh hexagon nut opposite to the tightening movement, to transfer the rotational forces around the nut A new addition is this end face to enable the starting position without it being completely shortened by the nut. It is also to be removed from the DT-PS. This known wrench can be used in the introduction to the description as known but not in the sense of a normal open-end wrench 60, by making a recess and is not an open-end wrench for any other nut shape on one side than the three stamped sizes to transform encrypted. However, it is not a reversible one. There is also the risk that the inevitable signs of wear and tear given when this prior art ratchet comes from. A wrench with a recess in the retaining lugs lead to the fact that for the smaller 65 the jaw is known from DT-PS 890 780. Its nut sizes do not have sufficient contact surfaces, other jaw is shortened. This key is available for more. Nuts of different sizes cannot be used. He From US-PS 1,138,572 and 1,341,178 does not have a retaining lug, but a V-shaped