DE9415673U1 - Screw with internal and external hexagon and hexagon socket wrench insert for internal and external hexagon - Google Patents

Description

Description Page 1 Screw with hexagon socket and hexagon socket

Key insert for internal and external hexagon.

The invention relates to commercially available threaded screws with hexagon heads, which are additionally provided with a hexagon socket, and to threaded screws with hexagon sockets, the head of which is additionally provided with an external hexagon.

The invention relates to hexagon socket wrench inserts, which are additionally provided with an inserted hexagon pin.

In the known versions of hexagon screws, the head is provided with a hexagon. In the known versions of hexagon socket screws, the head is provided with a hexagon socket. The hexagon screw can only be used on the outside of the

Description Page 2

Hexagon can be turned with a wrench or socket wrench, the hexagon socket screw can only be turned in the hexagon socket with a hexagon key. It happens very often - especially with older, stuck screws - that the external or internal hexagon of the screw is so deformed when subjected to stress from a wrench, socket wrench or hexagon key that it can no longer be loosened with a wrench and has to be unscrewed with special screw extractors, which is a lot of work and time.

The invention is based on the task of developing a screw with corresponding tool, which is designed in such a way that even under extreme loads, deformation of the external or internal hexagon cannot occur.

Description Page 3

To achieve this object, the invention proposes that the screw (Fig. 1/1) is provided with an external hexagon (Fig. 1/2) and an internal hexagon (Fig. 1/3). A hexagon pin (Fig. 2/2) is additionally inserted into the hexagon socket wrench insert (Fig. 2/1), which is parallel to the hexagon of the socket wrench insert 1 (Fig. 2/3). The inserted hexagon pin (Fig. 2/2) extends so far into the socket wrench insert (Fig. 2/1) that when the socket wrench insert (Fig. 2/1) with the inserted hexagon pin (Fig. 2/2) is placed on the screw head (Fig. 1/4) of the screw (Fig. 1/1), the external hexagon (Fig. 1/2) is surrounded by the hexagon of the socket wrench insert 1 (Fig. 2/3) and the inserted hexagon pin (Fig. 2/2) snaps into the internal hexagon (Fig. 1)3). The force is not transmitted to either the external or internal hexagon as with previously known screws, but is distributed between the external and internal hexagon. Tests have shown that even under extreme loads the external and internal hexagons of the screw heads remain unchanged. In the event of overload, the screw heads are more likely to break off before the external or internal hexagon is deformed.

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List of reference symbols

Figure 1

1 screw

2 external hexagon

3 hexagon socket

4 screw head

Figure 2

1 hexagon socket wrench insert

2 Inserted hexagon pin

3 Hexagon of the socket wrench insert 1

Claims (9)

Protection claims Page 1 Screw with internal and external hexagon and hexagon socket for internal and external hexagon characterized in that 1) the screw head (Fig. 1/4) of the screw (Fig. 1/1) is hexagonal on the outside and additionally has a hexagon socket (Fig. 1/3). 2) the hexagon socket wrench insert (Fig. 2/1) is additionally provided with an inserted hexagon pin (Fig. 2/2). 3) the inserted hexagon pin (Fig. 2/2) is inserted into the hexagon socket wrench insert 1 (Fig. 2/1) in such a way that its surfaces and the surfaces of the hexagon of the hexagon socket wrench insert 1 (Fig. 2/3) are parallel to each other. 4) the inserted hexagon pin (Fig. 2/2) is inserted into the hexagon socket wrench insert (Fig. 2/1) in such a way that it snaps into the hexagon socket (Fig. 1/3) when the hexagon socket wrench insert (Fig. 2/1) is placed on the screw (Fig. 1/1). • * · Protection claims Page 2 5) the screw (Fig. 1/1) can be tightened or loosened by placing an open-end wrench, a ring spanner or a hexagon socket on the external hexagon (Fig. 1/2). 6) The screw (Fig. 1/1) can be tightened or loosened by inserting a hexagon key into the hexagon socket (Fig. 1/3). 7) by placing a hexagon socket wrench insert (Fig. 2/1) with inserted hexagon pin (Fig. 2/2) on the external hexagon (Fig. 1/2) of the screw head (Fig. 1/4), the hexagon of the hexagon socket wrench insert 1 (Fig. 2/3) encloses the external hexagon (Fig. 1/2) of the screw (Fig. 1/1) on the outside and the inserted hexagon pin (Fig. 2/2) of the hexagon socket wrench insert (Fig. 2/1) penetrates the internal hexagon (Fig. 1/3) of the screw (Fig. 1/1), so that the screw (Fig. 1/1) can be tightened or loosened. Protection claims Page 3 8) the force transmission for tightening or loosening the screw (Fig. 1/1) is distributed between the external hexagon (Fig. 1/2) and the internal hexagon (Fig. 1/3) using the hexagon socket wrench insert (Fig. 2/1) with the hexagon pin inserted (Fig. 2/2). 9) by distributing the force transmission as described under 8), the external hexagon (Fig. 1/2) and the internal hexagon (Fig. 1/3) of the screw (Fig. 1/1) and the hexagon of the hexagon socket wrench insert 1 (Fig. 2/3) with the inserted hexagon pin (Fig. 2/2), even with the most difficult to loosen screws, the hexagons are always retained exactly and rounding of the edges is prevented.