DE1684419U - ARRANGEMENT FOR THE WORKING OF A WRENCH WITH A SCREW. - Google Patents

Description

USP Nürnberger Schraubenfabrik und Elektrowerk GmbH Nürnberg, Further Strasse lola

. File number: Ή 21o8 / S7a

3o. 5.52

Arrangement for the interaction of a wrench with a screw.

The fire relates to a new design of visual fairies, in particular screws with internal engagement and corresponding actuating elements and their interaction. Ss begannt that fcei- Sch2 ^ rtfiSLn_jnit inside attack - among these are also understand the Sehlitzkopf- and the Er-euzseiiütssel raucen zn in a broad sense - due to insufficient führungsmögliehkeiten the suit with -erheblichen difficulties connected. It has been proposed here, for example in the case of erecting screws, to form the erecting seat in the screw head in such a way that considerable rapid friction is brought about. With the introduction of the InnenseehskantschjLaab «rr" K: this could be eliminated,

the screws of this type a considerable depth of the SeGhskantsackloch.es and thus a large height of the screw head required, otherwise the actuation of the screw again takes place without sufficient management of the key. From Zonstruktionsgrünaen on the other hand, a screw head as small as possible is advantageous. Considerations of this kind led to hexagon socket screws lower head height, next to the Seeliskaatlocli ir. Scliraubenkopf also have a blind hole in which a zai: fenför. ~ I ^ er The approach of the hexagon wrench engages.

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To denote the initially cited Eaeliteile -.vira innovations-r according to an arrangement for the interaction of Selirauben, in particular with internal attack, and wrench or screwdriver, the single handle part engages in the counter-shaped recess in the Sciiraubenko-pf, ": ei der There is an additional guide and force-fit connection between the fastening and actuating member via further common AufisgefIschen.

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The vUeuefang is explained in more detail using the drawings, for example. In the figures 1 - 4 the interaction according to the example of a Fätfäruhgy'anr ⁷ is -: Simple slotted head screw shown. The screwdriver shaft 1 is characterized on the front by a flat surface 2. When actuated, the engaging part 3 engages in the slot 4 of the screw 5, whereby the two end faces Z and β de.§ screw drivers or the screw come flat against one another and, due to the surface friction and additional guidance, the Use a screwdriver or prevent damage to the screw head. ' ^:

In Fig. 5 , the cooperation in accordance with the principles of a Phillips screw is shown. Engagement part 7 and cross slot 8 are formed in the usual way. The suit . j is, however, by the superposed in frontal Bdätigung I "surfaces 9 and comparable Io of the screw driver or the screw j pieces. _r \

line shows another version of the arrangement according to the innovation Fig. 6 using the example of the hexagon socket screw. This screw is characterized by a relatively small run of the hexagonal hole 11 and consequently by an advantageous, low head height 12, A hexagonal profile rod bent to an angle or a hexagonal rod with a knob handle can be used as a socket wrench be used. What is remarkable, however, is the stepped shape Paragraph of the engagement part 15 from the support ring 14, for example can be produced in a simple manner in that a cylinder sleeve 15 is pushed over the socket wrench profile us3u alt öiesssr by means of elaeT or ßrßr'erer adjusting screws 16 and 17 can be screwed. Of course, one can Such a key can also be made in one piece from the full material. When pressed, an additional one takes place here Leadership as a result of the two end faces lying on top of one another 14 and IS of the wrench or screw.

With the innovation according to the design of the screw according to FIG. 6a the additional guidance takes place over the end face 19 and over the frustoconical surface 2o.

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The arrangement of FIG. 1 according to the invention offers excellent guidance and centering aid. The fastening and actuating elements are advantageously designed in such a way that the common guidance and centering takes place only via the two common frustoconical surfaces 21 and 22.

Fig. 8 and 9 show an embodiment according to the innovation with additional Leadership and, frictional connection between Visual hood and key using the example of the Allen screw. 'This example combines the advantages of the Allen screw with those of the normal slotted head screw.

The inflation is not limited to the examples shown. Scr.- ', for example, similar to the cross-head screws, it can also be used on screws with any recess in the screw head. ! The frame of the • Inflation is also not exceeded if the same 'renewal according to characteristics that have been explained in the -Innensechskantschraube, even with internal square, _{Inneoscirtkant-;} . generally with socket head screws as well as with screws with serration or with any internal shape and designed accordingly. Wrenches are applied.

Claims (7)

1 »Arrangement for the interaction, a screw, in particular with internal attack, for example, in the form of a slot, cross slot or any designed blind holes in the screw head with a wrench or screwdriver whose engagement eil is designed as a counter-shape, characterized by such a design "that between the fastening and actuating elements an additional guide and / or force-fit . "Connection takes place via other common contact surfaces * 2. Arrangement according to claim 1, characterized in that the additional guide over the end face (2 in Fig. 1-4 and 9 in Fig. 5) of the actuator on the one hand and the end face \ -_ (6 in Fig. 4 and Io in Fig. 5) of the screw head takes place. 3. Arrangement according to claim 1 or 2, characterized in that the blind hole in the screw has an even number of edges or has internal splines, while the engaging part of the ■ Actuator is designed as a corresponding counter profile. 4. Arrangement according to claim 1 or the following, characterized in that the Saefcloch is designed as a hexagon socket (11 in Fig. 6). - ■■■■ ■ - \ .- " ^J :.. 5. "Arrangement according to claim 4, characterized in that a hexagonal profile rod reinforced with a cylinder liner is used as a socket wrench is provided. (13, 15 in Fig. 6). 6. Arrangement according to claim 5, characterized in that the cylinder liner is attached to the profile bar by means of adjusting screws (16, 17 in Fig. 6) or is concealed from them. 7. screw with hexagon socket according to claim 3 or the the following, characterized by a significantly lower head height than the previously common hexagon socket screws (12 in Fig. 6). 8 * screw with hexagon socket according to claim 7, characterized by a head height according to regulation DIK 84 .. NYS. * F. Nürnberger 'screw factory and Elektrovierk G.m.b.H.