DE2322678A1 - ADJUSTABLE WRENCH - Google Patents

Description

DIPL-IN6. DR. IUR. DIPL.-ING.

VOLKER BUSSE DIETRICH BUSSE

45 OSNABRÜCK, ¹ K May 1973 MOSERSTRASSE 20/24 L / Th

Erik Lind

Ivars Uddevägen 1

590 80 Södra Vi, Sweden

Adjustable wrench

It is known to have a wrench with a tubular shaft or to provide a handle that extends from the key head and essentially in the same plane as the key head arranged and provided with .ein adjusting device to od the gap between the jaws from the free end of the shaft. Like. Adjust the wrench. In this known tool, the adjusting device comprises a rod which is in the Tubular shaft is axially displaceable, one end of which protrudes into an opening in the key head and the other end of which can be operated by a sleeve provided on the shaft so that the rod can be axially displaced can by moving the sleeve with respect to the shaft.

The invention is primarily based on the object of designing such a wrench so that it both as a common adjustable wrench and

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- 2 can also be used as a ratchet wrench.

According to the invention, this is essentially achieved by means for releasably locking the rod in the sleeve in the axial direction tion and for resilient pushing of the rod in the direction of the key head when the lock is released.

If the wrench is used to turn ordinary hexagon nuts, If screw heads, tubes or the like is used, the rod becomes the key head when the rod is locked pressed. Even if the wrench for turning screws with hexagon socket, d. H. Screws with a hexagonal recess in the head are used, the rod becomes the socket head down when the lock is released.

Further features and advantages of the invention emerge from the claims and the following description of several embodiments shown in the drawing. In the drawing demonstrate:

Pig. 1 is a view of a wrench according to the invention seen from below;

FIG. 2 'is a side view of the wrench according to FIG. 1;

3 shows a section through the wrench according to FIGS. 1 and 2 along the line III-III of FIG. 1;

Fig. Jj shows a cross section along the line IV-IV of Fig. 1;

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Fig. 5 is a plan view of the key head in a modified form Embodiment;

Pig. 6 shows a plan view of a further embodiment of a key head, which can be used for tubes and rods with a circular Cross section is determined;

Figure 7 is a plan view of a leaf spring clip for attachment to a key head;

Fig. 8 is a longitudinal section through a key head for Hexagon socket screws;

9 shows a longitudinal section through a further embodiment an adjustable wrench with modified means for loosening the rod; and

Pig. Fig. 10 shows a cross section essentially along the line X-X the pig. 9.

In the various figures, the same or similar parts or Elements have been given the same reference numerals throughout.

The head 1 of the adjustable wrench according to the invention is provided with a handle or shaft 2 which, starting from the key head, extends essentially in the plane thereof and is provided with a central, continuous longitudinal bore 19 in which a rod 3 is slidably arranged in the manner is that its one end into the opening 20 of the key head protrudes. The rod 3 is with a perpendicular to this

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standing pin 21 provided, which is in a longitudinal slot? 2 in the Scha 2 protrudes, in the rod 3 at a rotation with respect to the To prevent shaft 2. The end of the pin protruding through the slot 22 is provided with a head 24 in a suitable manner.

The rear end of the shaft 2 is provided with a threaded area onto which a sleeve 6 provided with an internal thread is screwed is. In its central area or near its center, the sleeve 6 is verseien with a transverse recess 4, which almost extends to the middle of the sleeve 6.

In the recess k a block 5 is arranged and provided with lugs 1: which protrude laterally on both sides of the sleeve 6.

On the opposite side of the sleeve, a plate 8 is arranged essentially in the same transverse plane as the block 5. The ends of the plate, which protrude beyond the circumference of the sleeve, are provided with mutually parallel pins 9 which are slidable are guided in projecting from the sleeve 6 lugs 10 and fixed in the lugs 11 of the block 5. The plate or crossbar 8 is in its normal, manually inoperative position at a distance from the sleeve 6 by the pins 9 surrounding it Compression springs 12 held.

The rear of the rod 3, which is in the sleeve 6 behind the protruding rear end of the shaft or handle 2 is provided with a circumferential recess 7, the width of which is slightly larger

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■ - 5 than that of block 5.

The rear end of the rod 3 is with a thinner extension 17, the rear end of which is slidable into a corresponding central recess or bore 18 in the rear end of the sleeve 6 can protrude. A compression spring is between the rear end of the rod 3> which is designed as an abutment 14, and a corresponding abutment. 16 is provided in the sleeve 6.

It has proven to be useful to remove the sides 26 of the key head, which are to be brought into engagement with a nut or a screw head, with radially inward protruding ears or To provide lugs? 5, which can be brought into engagement with the surface of a nut or a screw head and thus prevent that the wrench head slides off the nut or the screw head. .

The adjustable wrench works as follows:

Before using the wrench, the sleeve 6 is turned, until the nut or screw head to be tightened or loosened between the inner sides 26 of the wrench head 1 and the end of the rod 3 »which protrudes into the key head can be inserted.

When using the wrench one lets the head 1 slide over the nut or the screw head in such a way that the

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Approaches 25 with the surface of the nut or the screw head come into engagement, whereupon the sleeve 6 is rotated until the front end of the rod 3 tightly with the nut or the screw head comes into engagement. The handle 2 is then pivoted to pull or loosen the nut or screw head

When the swivel or rotary stroke has been carried out, the Plate 8 pressed down to hats 6 and the handle or the shaft 2 is pivoted back, with the rod 3 then axially by engagement of its front end with the nut or the like. Is axially displaced against the action of the spring 15, so that the front end of the rod 3 od on an edge of the nut. The like. Which is assumed to be a hexagon, can pass if the handle or the shaft 2 has been pivoted back by 60 ° is, the plate 8-is released, whereby the block 5 the rod-3 locks again in the axial direction and the nut or screw head can be rotated again.

Thus, the wrench serves both as an adjustable wrench and as a ratchet wrench.

The key head 1, the opening 20 of which is closed according to FIGS. 1 to 3 can also have a lateral opening 30, as shown in FIG. 5, which enables the wrench to be put on To a screw head or the like (not shown) can facilitate.

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Pig. 6 shows a further modified key head according to FIG the invention. According to this embodiment, the wrench serves as a pipe wrench with an open wrench head an arcuate portion 26 with teeth 31 on the front End of the rod 3 facing side is provided, wherein the front end of the rod 3 is concave and also gesaljmi is as shown at 32.

The lugs 25 with which the sides 26 of the key head according to FIGS. 1 to 3 are provided can instead also be provided on a separate leaf spring element 33 as shown in FIG. 7. This leaf spring element 33 has at least three, and preferably less than four, 120 ° angles J> k and can be removed from a key head, e.g. B. according to Fig. 5, can be attached by spring force.

The wrench according to the invention can also be used for hexagon socket screws, i. H. Screws, the heads of which with a hexagon recess are provided in which a wrench engages, executed s-a. The head of such an adjustable one Wrench according to the invention is illustrated schematically in FIG.

Instead of the opening 20 of the embodiments described above the key head according to FIG. 8 has a laterally projecting one Edge 36, which is united with the tubular shaft 2 or with this one

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_ ₈ _ 232267a

Piece forms and serves with one side of the hexagonal recess to be brought into engagement of the screw head to be rotated. The axially displaceable rod 3 is also provided with such a Provided transverse edge 37, which cooperates with the edge 36 and is used for this purpose, with an opposite side surface of the hexagonal recess of the screw head to be brought into engagement with a hexagon socket. The edge 37 can be in any suitable manner be attached to the rod 3, e.g. B. by a pin 38, or can ^ it the rod 3 consist of one piece.

When the rod 3 is released, so does the wrench Can pivot back, the edge 37 must of course be displaced resiliently towards the edge 36, so that the edges 36,37 at a Corner of the hexagonal recess in the screw head can pass. This is reflected in the embodiments described above, in which the rod 3 is also moved to the right by the nut.

9 to 10 show a modified device for releasing of the rod 3 · According to the embodiment according to FIGS. 9 to 10, the plate or crossbar 8 according to FIGS. 1 to 4 is through replaces a push button, the lugs 10, 11 of the sleeve 6 and of the block 5 being omitted. Instead, stretch the pins 9 through Bdirungen in the sleeve 6 itself and engage in threaded holes in the block 5. The push button 8a is through a ring 39 is guided, which is fastened in a recess in the sleeve 6 and acted upon by a single compression spring 12.

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In this pall, the pin 21 is fastened in the tubular shaft 2 and engages in a longitudinal recess 22 of the rod 3. A stop screw is designated with ^{1 JO.}

The embodiments described above and shown in the drawing of the invention are of course only to be regarded as examples and their details can refer to various Way can be modified without departing from the scope of the invention. In particular, new embodiments developed by of the invention can be provided by providing details from various of the illustrated embodiments be combined accordingly »

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Claims (3)

- ίο - 232267a Patent claims: flj Adjustable wrench with a wrench head, an opening in this or a nut or screw head engagement edge on this, a tubular shaft extending from the wrench head and non-pivotable in relation to this, a rod axially displaceable in the tubular shaft, one end of which goes into the opening of the wrench head. or protrudes beyond the engagement edge of the key head, and a sleeve which is axially movable and can be fixed in various axial positions on the end of the tubular shaft facing away from the key head ~, characterized by devices for releasably locking the rod (3) in the sleeve (6) in the axial direction and for resilient pressing of the rod (3) in the direction of the key head (1) when the lock is released. 2. Wrench according to claim 1, characterized in that the means for releasably locking the rod (3) in the Sleeve (6) arranged in a transverse recess (4) of the sleeve Has block (5) which can be brought into engagement with a recess (7) in the rod (3) and nit a device for manually disengaging the block from the recess (7) is provided. 3. Wrench according to claim 2, characterized in that the means for disengaging the block (5) from the recess (7) in the rod (3) comprises a transverse plate (8), 309847/0456 232267a which is provided on the sleeve (6) on its opposite side in relation to the recess (4) and the sleeve (6) both sides of which protrudes laterally, the two ends of the plate (8) being provided with pins (9) which can be slid from the sleeve (6) protruding Arisätze (10) reach through and ni ^ htgleitbar are fastened in lugs - (H) protruding from the block (5) and that coil springs around the pins between the * plate (8) and the lugs (10) of the sleeve, for pressing off the plate (8) are provided by the sleeve. l \. Wrench according to one of Claims 1 to 3, characterized in that the device for resiliently pressing the rod (3) in the direction of the wrench head (1) has a first abutment (I ¹ J) on the rear region of the rod (3) second abutment (16) on the sleeve (6) and the compression spring (15) arranged between the abutments and resting against them. * 5. Wrench according to claim H, characterized that the rear region (13) of the rod (3) is provided with a thinner extension (17) which is surrounded by the compression spring (15) and is displaceable in a corresponding guide recess (18) in the rear region of the sleeve (6). 6. Wrench according to one of claims 1 to 5, characterized by a leaf spring clip (33) with one * more than half of the outer circumference of the key head (1) 309847/0456 232267a Contour that can be flexibly attached to the key head and with the side pointing radially inward from the key head opening Approaches for contact with an end face of a nut or screw head to be turned by means of the wrench is. ■ 3 0 9 8 4 7/0 U 5 6 Blank page