DE2107628A1 - Wrenches and nuts - Google Patents

Description

Patent Attorneys ' ^: "'''"■' · ιϋί «

Dipl.-ln'i. A. ^r : i> nacker O * λ <n aaa

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Dr. :). <y. ..o: kr.cir S ManchJr: 2 /., IvIuxinüiLnstr. 43

Pafonnaldung

Corino OROSBRA t in Meolo (Venezia), Italy, "wrenches and nuts".

The invention relates to a screw and Kutte rn schliissei with four pairs of aligned, cross or star-shaped, interconnected at their inner ends and each provided with a socket or socket wrench head on their outer south.

The wrenches and nuts of this type combine four individual wrenches in a single device for

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Different screw or nut sizes and / or -form and enable not only convenient handling and operation of the key used, but also the exertion of a larger torque when tightening or looking a screw connection, since that transverse to the shaft of the key head used Pair of keys as a toggle or handle can be used.

In the known wrenches and nuts of this type, the four are arranged in a cross or star shape Key shafts rigidly connected to each other and form As a result, it is a very bulky device that takes up a lot of space when it is put down and is very heavy in the usual tool bags or tool boxes, e.g. for drivers, plumbers and the like.

The object of the invention is to eliminate this disadvantage of the known designs and to provide a screw and to develop nut wrenches of the type described at the beginning, which are essential when not in use Takes up less space, i.e. is not so bulky and conveniently housed in tool pockets or boxes can be.

According to the invention, this object is achieved in that a key shaft telescopically in the aligned,

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tubular key shaft can be inserted is, and that the two, other Schi ils are shafts on hinged to the outer, tubular key shaft of the telescopic key shaft pair and in one about parallel to this key shaft on both sides of the same lying closed position can be pivoted.

In the inventive design of the screw or | Nut wrench can so the two hinged on the tubular key shaft, in the use position; perpendicular to this standing and mutually aligned key shafts are pivoted in opposite directions when the key is not in use so that they come to lie approximately parallel to the tubular key shaft on both sides of the latter. In addition, d ' . Slidable key shaft pushed out into the position of use can be pushed completely or largely into the tubular key shaft when the key is not in use. In this closed position, the key assumes a very compact (remaining old) and can consequently be stored in a space-saving manner or items in a tool bag or in a box or the like.

After another llerkjaa ^. d ^ a? $ Jr.f4n # ung Screw

ORIGINAL INSPECTED

Locking means for the rotationally fixed and releasably displaceable connection of the tubular key shaft with the displaceable key shaft at least in the pushed out and preferably also in the pushed in Position of this latter equipped. As a result, the sliding key shaft is pushed out in its Use position firmly with the tubular key shaft connected, so that this is directly or indirectly via the two other swiveled-out key shafts can be used in the usual, advantageous manner as a hand grip or Xnebelgrip. On the other hand, the slidable key shaft also held in its pushed-in position on the tubular key shaft and as a result, cannot accidentally step out of it.

The means for the non-displaceable, releasable connection of the tubular key shaft to the displaceable key shaft in its extended and retracted position are advantageously designed as spring-loaded locking elements, in particular locking balls. For the non-rotatable connection of the tubular key shaft with the displaceable key shaft, the inner end of the latter can be designed as a polygon which, in the extended position of the displaceable key shaft, is inserted into a corresponding Hehrkantabschnitt the bore of the tubular

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shaped key shaft engages. Of course it is also possible to use both the bore of the tubular key shaft and the displaceable key shaft A suitable polygonal profile for the positive, non-rotating coupling of the two over its entire length To lend key shafts, or the sliding key shaft in any other way on his guide the entire displacement path positively non-rotatable in the tubular key shaft. |

According to a further feature of the invention, the displaceable key shaft can be pulled out completely from the tubular key shaft. This design has the advantage that the slidable, extended key shaft can be used as an independent, separate tool and can also be designed accordingly. In particular, the inner end of the displaceable key shaft can have a shoulder designed as a screwdriver. Furthermore, can be plugged on the inner end of the displaceable i extended key shank, an additional single- or Aufsteckschlttsselkopf and be releasably secured.

Further features and advantages of the invention emerge from the following description of one in the drawing schematically illustrated embodiment. Show it:

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Pig. 1 a screw and nut wrench according to the invention in the open position of use, partly in section.

Fig. 2 is a cross section along the line II-II of Pig.

Pig. 3 the wrench and nut wrench in the closed storage position.

Pig. 4 the soaked sliding key shaft with an additional key head attached.

The wrench and nut wrench shown consists of four cross-shaped pairs aligned with one another arranged key shafts 1, 2, 3 and 4, each with a socket or socket wrench head at their outer ends 101, 102, 103 and 104 are provided. The key heads 101, 102, 103 and 104 can be e.g. designed as a spanner or open-end wrench or as a socket wrench 101, 102, 103 or as a stereo wrench 104 be.

The key shaft 1 is tubular. On its inner side, i.e. opposite to the key head 101, At the open end, two connecting plates 5 parallel to one another are attached, e.g. welded, on both sides. the

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inner, i.e. facing ends of the "other two Key shafts 2 and 3 engage between these connecting plates 5 and are each connected to them by a bolt 202 "or 203 pivotably connected. The fourth key shaft 4 is telescopically displaceable in the tubular Key shaft 1 stored. The inner end of this sliding one The key shaft 4 is designed as a polygon 204 and has a screwdriver attachment on the face

1 6 provided. The tubular key shaft 1 instructs its inner end has a polygonal bore section 201 which corresponds to the inner polygonal end 204 of the sliding key shaft 4 corresponds. Besides that a spring-loaded locking ball 7 is installed in this inner end of the tubular key shaft 1, which protrudes into the polygonal bore section 201 of the key shaft 1 and with a corresponding, pan-shaped catch 8 in the inner polygonal end 204 of the displaceable key shaft 4 cooperates.

In the in Pig. 1 and 2 shown position of use of the wrench and nut wrench, the two lateral, pivotable key shafts 2 and 3 are in their aligned with each other and perpendicular to the tubular key shaft 1 pivoted position, in which they stop, e.g. by stopping their correspondingly shaped, inner ends against the tubular

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Key shaft 1 are held. The sliding one The key shank 4 is pushed out so far that its inner polygonal end 204 enters the polygonal bore section 201 of the tubular key-socket shank 1 come and the spring-loaded hurry ball 7 in the associated notch 8 engages. As a result, the slidable key shaft 4 is rotatable and slidable with the tubular key shaft 1 connected. In this open position of use, the wrench and nut wrench how the traditional cross-shaped keys are used.

When not in use, the wrench and nut wrench can be brought into the space-saving locking or storage position shown in FIG. 3. For this purpose, the two lateral, pivotable key shafts 2, 3 are pivoted in the direction of the tubular key shaft 1, ie upward in FIG. 1, and assume a position approximately parallel to the tubular key shaft 1 on both sides of the same. The displaceable key shaft 4, on the other hand, is pushed so far into the tubular key shaft 1 that only its key head 104 protrudes therefrom. Preferably, the sliding key shank 4 is also held in this retracted closed position on the tubular key shaft 1, and by means of the same latching ball which is now the in a corresponding, in 7 »

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outer end of the 3 SchlCisöelschaf fcs 4 behind deoson Key head 104 provided catch 9 engages.

Due to the arrangement of the locking ball 7 as a locking means for the non-sliding, releasable connection of the two telescopically retractable and extendable key shafts 1 and 4, the sliding key shaft 4 can be completely pulled out of the tubular key shaft 1 and used as | Independent, separate tool, both as a screwdriver with its inner shoulder 6 and as a wrench and nut wrench with its outer socket head. In addition, an external key head 10 can be inserted into the permanently inner ear canal strap 204 of the extended key shaft 1, as in particular in Pig. 4 is shown. This additional key head 10 is rotatably and displaceably connected to the key shaft 4 so that it can be moved and rotated, namely by inserting the polygonal end 204 of the key shaft 4 into a corresponding, polygonal-shaped hole "of the key head 10 engages, and that a locking ball 11 built into the Schlilmiöl head 10 iv. the Fiiui ■ ί 8 Lm polygonal end 204 of the key shaft 4 unites.

The invention is of course not restricted to the illustrated and described exemplary embodiment, but there are several within the scope of the general inventive concept, in particular from a structural point of view

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different solutions possible. ' On the other hand you can sümbliche, the drawing and the description inferable Features, including structural details In any combination according to the invention be,

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Claims (10)

PATENT CLAIMS 1.1 Wrench and nut wrenches with four cross-shaped or star-shaped ones, aligned in pairs arranged, connected to one another at their inner ends and with one each at their outer ends Key shafts provided with a plug-in or socket wrench head, characterized in that a key shaft (4) can be inserted telescopically into the tubular key shaft (1) aligned for this purpose is, and that the "two other key shafts (2,3) on the outer, tubular key shaft (1) of the telescopic key shaft pair (1,4) articulated and in an approximately parallel to this key shaft (1) on both sides of the same lying closed position can be pivoted. 2. Wrench and nut wrench according to claim 1, characterized by locking and locking means for the rotationally fixed and releasably sliding connection of the tubular key shaft (1) with the sliding key shaft (4) at least in the extended and preferably also in the retracted position of the latter. 3. screw and nut wrench according to claim 1 and 2, 109 * 3S / n? Li * --- BADO _R , G, NAL characterized in that the means for releasable sliding Connection of the tubular key shaft (1) with the sliding key shaft (4) in the inserted and / or extended position of the latter as spring-loaded hurry elements (haste ball 7, hasten 8,9) are trained. 4. Wrench and nut wrench according to claim 1 to 3 _f, characterized in that for the rotationally fixed connection of the tubular key shaft (1) with the displaceable key shaft (4), the inner end of the latter is designed as a polygon (204) which is in the extended position (Fig. 1) of the displaceable key shaft (4) engages in a corresponding polygonal section (201) of the bore of the tubular key shaft (1). 5. screw and nut wrench according to claim 1 to 3t characterized in that the displaceable key shaft (4) is positively locked over its entire displacement path is guided non-rotatably in the tubular key shaft (1). 6. screw and nut wrench according to any one of claims 1 to 5, characterized in that the displaceable key shaft (4) can be pulled out entirely from the tubular key shaft (1). 109835/0709 7 screw and nut wrenches according to claim 6, ' characterized in that the inner end of the displaceable key shaft (4) is designed as a screwdriver Has approach (6). 8. screw and nut wrench according to claim 6 or 7 »characterized in that on the inner end (204) of the sliding, extended key shaft (4) I a separate socket or socket wrench head (10) can be attached and can be connected to the key shaft (4) so that it is detachable and non-rotatable (Pig. 4). 9 · bolt and nut wrench according to one of claims 1 to 8, characterized in that the pivotable Schlüsselschäfte (2,3) in their pivoted position by locking, locking and / or _Lifting: are medium retainable. 10. Wrenches and nuts according to one of the ^ Claims 1 to 9 »characterized in that a connection plate (5) is attached to diametrically opposite sides of the tubular key shaft (1) and the pivotable locking shafts (2, 3) engage between the connection plates (5) and are hinged to them . 109835/0209