DD209408A1 - HEADSTOCK FOR SCREWDRIVERS - Google Patents

Abstract

The aim of the invention is to provide an essay or Kopfstueck for Schraubgeraete or similar devices with electric, pneumatic or manual drive, which allows a functionally appropriate leadership of the tool at a deviation from the perpendicularity of the tool against the corresponding surface on Werkstueck, ohnesie too damage and that ensures a change in the Einschublaenge of the tool. This is achieved by attaching a head piece to a guide piece by means of a screw connection and locking it in any desired position by means of a lock nut. At the opposite end is a load distributor, which is connected by means of a pivotal connection with the Kopfstueck and the support surface is adapted in the shape of the workpiece.

Description

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Title of the invention Head piece for screwdrivers

Field of application of the invention

The invention relates to a head piece for screwdrivers with electric, pneumatic or manual drive, especially in construction, engineering or similar industries.

Characteristic of the known technical solutions

There are essay or head pieces for screwing or similar devices with electric, pneumatic or manual drive known that have a protective function against or before the rotating tool and prevent lateral slippage of the screwdriver or a similar tool from the screw or the like. The known top or head pieces are formed as a hollow cylinder, in the interior of which the tool is located and exits at the end of the hollow cylinder to allow engagement in the screw or the like. The known technical solutions are liable to the defect that on the one hand, the top surface of the head piece is very small and at an already small deviation of the tool from the perpendicular to the corresponding surface on the workpiece no precise guidance of the tool is made possible and the surface of the workpiece damage having. Furthermore, the known technical solutions lack the defect that the insertion length of the screw

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can not be changed without replacing it · With necessary rework and associated changes in the length of the screwdriver or a similar tool, the necessary insertion length can no longer be guaranteed who the.

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Aim of the invention;

The aim of the invention is to eliminate the known technical solutions inherent deficiency and to provide such essay or head piece, which allows a functional guide of the tool at a deviation from the squareness relative to the corresponding surface on the workpiece, without damaging them and which ensures a change in the insertion length of the tool.

Explanation of the essence of the invention;

The object of the invention is to make the essay or head piece for screwing or similar devices with pneumatic, electric or manual drive so that when using the tools at a deviation from the perpendicular to the corresponding surface on the workpiece no damage, even at relatively soft materials, done on the workpiece and a change in the insertion length of the tool is guaranteed.

Features of the invention

The object of the invention is achieved in that a head piece is attached via a screw on the guide piece, which allows a change in the insertion length of the tool. By a counter screw the insertion length is fixed. On the side opposite the screw connection, a swiveling load distributor was attached to the head piece, which prevents damage to the workpiece when it deviates from the perpendicularity of the tool.

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Report on the result of the preliminary check for novelty and the technical-economic effectiveness

The plague of the novelty was researched in the following classes:

class country by Patent-Hr « to tent-ITr. B 25 B 17/00 DD 35773 21/00 DD 155258 38706 4.23 DD 49534 33977 29/00 DD 72761 - B 25 B 17/00 DE 3022675 1920227 21/00 DE 2104190 1503030 21/00 DE 2204699 2110112 21/00 DE 2264351 2210789 23/00 DE 3033669 2006031 B 25 B 17/00 US 3808916 3477318 17/00 US 4178817 3812744 17/00 US 4299145 4184390 21/00 US 4207784 3451514 23/00 US 4296656 3421557 29/00 US 4295393 3477756 B 25 B 17/00 SU 891417 406716 21/00 SU 903099 270613 23/00 SU 876412 442045 29/00 SU 870106 380445 B 25 B 17/00 GB 2072070 1155345 21/00 GB 2082491 1401019 21/00 GB 1397009 1082332 27/00 GB 2081636 1099760 29/00 GB 1431171 - 33/00 GB 2041815

There were no indications found that are contrary to the subject invention.

The application of the patented solution increases the working reliability of the corresponding devices and does not affect the surface quality of the processed parts, preferably of relatively soft material.

embodiment

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawing shows:

Fig. 1 head piece for screwdrivers

On a guide piece (1) a head piece (2) is fastened by means of a screw connection and locked by means of a lock nut (3) so that the insertion length of the tool (7) is optimal. On the opposite side of the screw is the load distributor (6) with its support surface (5) which is connected by means of a pivotal connection (4) with the head piece (2), whereby at a deviation from the perpendicularity of the tool relative to the corresponding surface on Workpiece prevents damage. For non-planar workpiece surfaces, the bearing surface (5) of the load distributor (6) is adapted in shape to that of the workpiece.

Claims (3)

15 2 ^ Erfindunffsanspruch. 1 head for screwdrivers or similar devices, characterized in that at a Pührungsstück (1) a head piece (2) is fastened via a screw and locked via a lock nut (3) that the Binschublänge the tool can be optimally designed · 2. head piece for screwing according to item 1, characterized in that on a head piece (2) opposite the screw, a load distributor (6) with its bearing surface (5), which is connected by means of a pivotal connection (4) with the head piece (2) · 3. head piece for screwing according to item 1, characterized in that the bearing surface (5) of the load distributor (β) is adapted in the shape of the workpiece. For this 1 page drawings