EP3106265B1 - Handheld tool and method for its production - Google Patents

Description

The invention relates to a hand tool of the type specified in the preamble of claim 1 and a method for its preparation.

Hand tools comprising several tools are known in a variety of designs. For example, from the WO 99/56916 A2 is a handle for a hand tool known to the different tool inserts are interchangeable fixed.

There are also known so-called combination key, which are used for example for the maintenance of motor-driven, hand-held implements such as chainsaws or the like. Such combination keys usually comprise a first tool, namely a screwdriver, which is permanently connected to a second tool, namely a socket wrench. The two tools are not connected via a handle or the like. With each other, but fixed directly to each other. The one tool thereby forms a handle for the other tool in operation.

In such combination keys, it is known to weld the two tools together. The welding is relatively expensive to manufacture, since the two tools are usually galvanized after welding. In order to achieve complete galvanizing, spatter must be completely removed. As a result, the manufacturing process is relatively expensive.

From the US 2015/0014612 A1 is a hand tool, namely a crowbar known, the two tools are connected to each other via projections of a tool, which engage in recesses of the other tool.

The invention has for its object to provide a hand tool of the generic type, which is easier to produce. Another object of the invention is to provide a method for producing the hand tool.

This object is achieved with respect to the hand tool by a hand tool with the features of claim 1. With respect to the method, the object is achieved by a hand tool with the features of claim 11.

It is provided that a fastening region of the first tool protrudes through at least one receptacle of the second tool. At least in the attachment section arranged in the receptacle, it is provided that the first tool has a non-circular cross-section, and that the receptacle has a cross-section adapted to the attachment section. As a result, an anti-rotation of the first tool relative to the second tool can be achieved in a simple manner. To secure the position of the mounting portion in the receptacle at least one axial securing is provided. The at least one axial securing causes a securing of the position of the fastening portion in the receptacle in both directions. As a result, the attachment section can not be removed from the receptacle without damaging or destroying the at least one axial securing device. However, a limited displaceability of the attachment portion in the receptacle may be given. The attachment portion may therefore be kept in the receptacle with game.

By separating the rotation and the axial securing the production of the hand tool can be simplified. The rotation is achieved by appropriate shaping of the first tool and recording, so that no further process step is needed for this. The axial securing can be made simple, since not additionally an anti-rotation must be effected.

Advantageously, the axial securing is arranged adjacent to the receptacle. A very stable connection of the two tools is achieved when the second tool has a first receptacle and a second receptacle, which are arranged opposite one another and through which the mounting region of the first tool protrudes. It can be provided that only one of the receptacles causes a rotation of the first tool relative to the second tool. Preferably, however, both images cause an anti-rotation.

Advantageously, a first axial securing adjacent to the first receptacle and a second axial securing adjacent to the second receptacle are provided. The two axial fuses are arranged so that they effect a position assurance on opposite sides. As a result, a secure position in both directions is achieved in a simple manner. Advantageously, at least one axial securing is arranged between the receptacles. In order to achieve an attractive appearance of the hand tool, both axial fuses are preferably arranged between the receptacles. Advantageously, the first tool has a first end, and one of the axial fuses is disposed on the first end facing side of one of the receptacles and the other of the axial fuses on the side facing away from the first end of one of the receptacles. The two axial fuses can be arranged on different receptacles or both on the same receptacle.

A simple design results from the fact that the axial securing is formed by a securing portion of the first tool. As a result, no additional components are required for the axial securing. It is envisaged that the first tool has a longitudinal central axis. The outside of the first tool has in the securing portion at a distance from the longitudinal center axis, which is greater than a distance of the associated location of the inner wall of the receptacle to the longitudinal central axis. The securing portion can be easily manufactured by deformation of the first tool. The assigned location of the inner wall of the receptacle is the area that offset the receptacle in a direction to the securing portion in the direction of the longitudinal center axis Place limited. The assigned location of the inner wall is accordingly the projection of the securing portion onto the receptacle in the direction of the longitudinal central axis of the first tool. The distance between the axial securing to the longitudinal central axis and the distance of the assigned location of the inner wall of the receptacle to the longitudinal central axis are measured in the same, the longitudinal central axis containing cutting plane. Due to the non-circular design of receiving and mounting portion, the shape of the securing portion can be largely freely selected. The securing portion only has to protrude beyond the location of the inner wall of the receptacle in a viewing direction in the direction of the longitudinal center axis, so that the securing portion engages behind the location of the inner wall and prevents the first tool from sliding out of the receptacle in the direction of the longitudinal center axis. Advantageously, the cross-sectional shape deviates from the cross-sectional shape in the attachment section in the securing section. In this case, the cross-sectional shape in the securing portion may have a different shape than the cross-sectional shape in the attachment portion. However, it can also be provided that the shape of the cross section in the securing section is the same, but larger than the cross section in the attachment section. Alternatively, it may also be provided that the cross-sectional shape and cross-sectional size in the securing section and fastening section are the same, but the center of area of a cross section in the securing section has a spacing from the longitudinal center axis of the tool and thus also to the longitudinal center axis of the receptacle. In the securing section, the material of the first tool is accordingly displaced laterally relative to the longitudinal center axis.

Advantageously, the at least one securing portion holds the first tool without play on the second tool. Preferably, the at least one securing portion holds the first tool under pretension on the second tool. As a result, it can be achieved even after a relatively long operating time and under the influence of force during operation that the first tool does not move relative to the second tool. This facilitates the operation. The fixation of the first tool under bias on the second tool can be achieved for example by appropriate design and arrangement of the at least one securing portion.

The first tool is preferably rod-shaped, in particular designed as a screwdriver. The second tool is advantageously tubular and in particular designed as a socket wrench. The second tool can be one over its entire length have constant cross section, for example, a hexagonal cross-section. However, it can also be provided that the second tool has sections with different cross-sectional shape. For example, the region of the second tool, which has the at least one receptacle, have an annular cross-section and the region which serves for attachment to an engagement contour, for example a nut or hexagon screw, have a polygonal, for example hexagonal, cross section. Also, the first tool may only partially, in particular in the at least one attachment portion, have a non-circular cross-section. However, it can also be provided that the first tool has a non-circular cross section over its entire length.

For a method for producing a hand tool, it is provided that the first tool is inserted into the at least one receptacle of the second tool and that in a subsequent method step, the at least one axial securing is produced by caulking the first tool.

The caulking of the first tool allows a simple way of fixing the first tool relative to the second tool in the axial direction. By suitable design of the caulking the caulking can be formed so that a backlash-free fixation, in particular a fixation under bias results. The second tool preferably has a first receptacle and a second receptacle, and the caulking takes place in such a way that the first tool clamps the second tool in the region of the two receptacles. The second tool is expanded or compressed by the first tool. In this case, the length of the section between the receptacles lying portion of the first tool is preferably changed during caulking. This can be done easily if two axial fuses are placed between the two seats or if two axial fuses are placed outside the area between the seats. If the second tool is of tubular design, for example as a socket wrench, then the two axial fuses are advantageously arranged within the socket wrench or respectively on the outside of the socket wrench.

Advantageously, the first tool and the second tool are galvanized prior to insertion of the first tool into the at least one receptacle. The fact that the connection of the two tools by caulking and not, as in the prior art, by welding, the galvanizing can be applied before joining the two tools together. The galvanizing of the items is due to the simpler geometry of the items compared to the overall tool simple and reliable. The two individual parts advantageously have no overlaps, so that all areas of the two tools can be galvanized. As a result, areas in which one tool covers the other tool can simply be provided with galvanizing. However, subsequent galvanizing of the two tools is possible.

In order to achieve a backlash-free rotation of the first tool relative to the second tool, it is provided that when caulking the first tool material of the first tool is displaced into the receptacle, so that the material at least partially fills the gap between the first tool and the second tool and the first tool secures without play in the recording. By suitable design of the caulking can thereby a play-free connection of the two tools are made in the axial direction, in the radial direction and in the circumferential direction of the first tool.

Fig. 1

eine perspektivische Darstellung eines ersten Ausführungsbeispiels eines Handwerkzeugs,

Fig. 2

das Handwerkzeug aus Fig. 1 in Explosionsdarstellung vor dem Verstemmen,

Fig. 3

eine Draufsicht auf das Handwerkzeug aus den Figuren 1 und 2 nach dem Zusammenstecken der beiden Werkzeuge,

Fig. 4

eine teilgeschnittene Darstellung entlang der Linie IV-IV in Fig. 3,

Fig. 5

eine teilgeschnittene, schematische Darstellung der Herstellung der Verstemmung der beiden Werkzeuge,

Fig. 6

eine vergrößerte teilgeschnittene Darstellung des Handwerkzeugs nach dem Verstemmen,

Fig. 7

eine Seitenansicht in Richtung des Pfeils VII in Fig. 6,

Fig. 8

eine vergrößerte, schematische, ausschnittsweise Darstellung des Bereichs der ersten axialen Sicherung,

Fig. 9

eine schematische Darstellung eines alternativen Verfahrens zur Herstellung des Handwerkzeugs,

Fig. 10

eine ausschnittsweise, geschnittene Darstellung eines zweiten Ausführungsbeispiels eines Handwerkzeugs,

Fig. 11

eine Seitenansicht in Richtung des Pfeils XI in Fig. 10,

Fig. 12

eine schematische Explosionsdarstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs vor dem Zusammenstecken der beiden Werkzeuge,

Fig. 13

eine Draufsicht auf das Handwerkzeug aus Fig. 12 nach dem Zusammenstecken der beiden Werkzeuge,

Fig. 14

eine teilgeschnittene Darstellung entlang der Linie XIV-XIV in Fig. 13,

Fig. 15

eine ausschnittsweise Schnittdarstellung des Handwerkzeugs aus den Figuren 12 bis 14 nach der Verstemmung,

Fig. 16

eine Seitenansicht in Richtung des Pfeils XVI in Fig. 15,

Fig. 17

eine ausschnittsweise teilgeschnittene Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 18

eine Seitenansicht in Richtung des Pfeils XVIII in Fig. 17,

Fig. 19

eine schematische Darstellung der Herstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 20

eine ausschnittsweise teilgeschnittene Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 21

eine Seitenansicht in Richtung des Pfeils XXI in Fig. 20,

Fig. 22

eine teilgeschnittene ausschnittsweise Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 23

eine Ansicht in Richtung des Pfeils XXIII in Fig. 22,

Fig. 24

eine teilgeschnittene ausschnittsweise Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 25

eine Seitenansicht in Richtung des Pfeils XV in Fig. 24,

Fig. 26

eine ausschnittsweise teilgeschnittene Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 27

eine Seitenansicht in Richtung des Pfeils XVII in Fig. 26,

Fig. 28

eine teilgeschnittene ausschnittsweise Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 29

eine Seitenansicht in Richtung des Pfeils XXIX in Fig. 28,

Fig. 30

eine teilgeschnittene ausschnittsweise Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 31

eine Seitenansicht in Richtung des Pfeils XXXI in Fig. 30,

Fig. 32

eine teilgeschnittene ausschnittsweise Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 33

eine Seitenansicht in Richtung des Pfeils XXXIII in Fig. 32,

Fig. 34

eine teilgeschnittene ausschnittsweise Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 35

eine Seitenansicht in Richtung des Pfeils XXXV in Fig. 34,

Fig. 36

eine teilgeschnittene ausschnittsweise Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 37

eine Seitenansicht in Richtung des Pfeils XXXVII in Fig. 36,

Fig. 38

eine perspektivische Darstellung eines weiteren Ausführungsbeispiels eines Handwerkzeugs,

Fig. 39

eine teilgeschnittene ausschnittsweise Darstellung des Handwerkzeugs aus Fig. 38 vor dem Verstemmen der beiden Werkzeuge,

Fig. 40

eine Ansicht in Richtung des Pfeils XL in Fig. 39,

Fig. 41 bis Fig. 46

schematische Schnittdarstellungen von Ausführungsbeispielen von axialen Sicherungen eines Handwerkzeugs, wobei die Figuren 41, 43 und 45 das Handwerkzeug vor dem Verpressen zeigen und die Figuren 42, 44 und 46 nach dem Verpressen,

Fig. 47

eine perspektivische Darstellung eines Handwerkzeugs nach dem Stand der Technik.

Embodiments of the invention are explained below with reference to the drawing. Show it:

Fig. 1

a perspective view of a first embodiment of a hand tool,

Fig. 2

the hand tool off Fig. 1 in exploded view before caulking,

Fig. 3

a top view of the hand tool from the Figures 1 and 2 after putting the two tools together,

Fig. 4

a partially sectioned view along the line IV-IV in Fig. 3 .

Fig. 5

a partially cut, schematic representation of the preparation of the caulking of the two tools,

Fig. 6

an enlarged partially sectional view of the hand tool after caulking,

Fig. 7

a side view in the direction of arrow VII in Fig. 6 .

Fig. 8

an enlarged, schematic, fragmentary representation of the area of the first axial securing,

Fig. 9

a schematic representation of an alternative method for producing the hand tool,

Fig. 10

1 is a fragmentary sectional view of a second embodiment of a hand tool,

Fig. 11

a side view in the direction of the arrow XI in Fig. 10 .

Fig. 12

a schematic exploded view of another embodiment of a hand tool before the mating of the two tools,

Fig. 13

a top view of the hand tool Fig. 12 after putting the two tools together,

Fig. 14

a partially sectioned view along the line XIV-XIV in Fig. 13 .

Fig. 15

a partial sectional view of the hand tool from the FIGS. 12 to 14 after caulking,

Fig. 16

a side view in the direction of arrow XVI in Fig. 15 .

Fig. 17

1 a partially cutaway view of a further embodiment of a hand tool,

Fig. 18

a side view in the direction of arrow XVIII in Fig. 17 .

Fig. 19

a schematic representation of the production of another embodiment of a hand tool,

Fig. 20

1 a partially cutaway view of a further embodiment of a hand tool,

Fig. 21

a side view in the direction of the arrow XXI in Fig. 20 .

Fig. 22

a partially cutaway detail of another embodiment of a hand tool,

Fig. 23

a view in the direction of arrow XXIII in Fig. 22 .

Fig. 24

a partially cutaway detail of another embodiment of a hand tool,

Fig. 25

a side view in the direction of arrow XV in Fig. 24 .

Fig. 26

1 a partially cutaway view of a further embodiment of a hand tool,

Fig. 27

a side view in the direction of arrow XVII in Fig. 26 .

Fig. 28

a partially cutaway detail of another embodiment of a hand tool,

Fig. 29

a side view in the direction of arrow XXIX in Fig. 28 .

Fig. 30

a partially cutaway detail of another embodiment of a hand tool,

Fig. 31

a side view in the direction of arrow XXXI in Fig. 30 .

Fig. 32

a partially cutaway detail of another embodiment of a hand tool,

Fig. 33

a side view in the direction of arrow XXXIII in Fig. 32 .

Fig. 34

a partially cutaway detail of another embodiment of a hand tool,

Fig. 35

a side view in the direction of the arrow XXXV in Fig. 34 .

Fig. 36

a partially cutaway detail of another embodiment of a hand tool,

Fig. 37

a side view in the direction of the arrow XXXVII in Fig. 36 .

Fig. 38

a perspective view of another embodiment of a hand tool,

Fig. 39

a partially cutout detail of the hand tool from Fig. 38 before caulking the two tools,

Fig. 40

a view in the direction of the arrow XL in Fig. 39 .

FIGS. 41 to 46

schematic sectional views of embodiments of axial fuses of a hand tool, wherein the FIGS. 41, 43 and 45 show the hand tool before pressing and the FIGS. 42, 44 and 46 after pressing,

Fig. 47

a perspective view of a hand tool according to the prior art.

Fig. 1 shows an exemplary embodiment of a hand tool 1 a combination key. The hand tool 1 comprises a first tool 2 and a second tool 3, which are fixed, in particular are connected to each other without play. The first tool 2 is in the embodiment of a screwdriver with a shaft 4 and a flattened tip 5, which serves to engage in the slot of a screw. The shank 4 has a non-circular cross section, in the exemplary embodiment a hexagonal cross section. At its tip 5 facing away from the end of the shaft 4 has an axial securing 7, which is formed as a thickened end and rests against an outer side of the second tool 3. In the exemplary embodiment, the second tool 3 is a socket wrench. The second tool 3 is tubular and has in the embodiment over its entire length a hexagonal cross-section.

Like the exploded view in Fig. 2 shows, the second tool 3 has in a side wall a receptacle 10 which has a non-round, adapted to the cross section of the shaft 4 of the first tool 2 cross-section. In the embodiment has the Take 10 a hexagonal cross section. The receptacle 10 is arranged in an end region of the second tool 3. At the opposite end, the second tool 3 has a top opening 6, which serves for placing on a nut or the hexagonal head of a screw.

The shank 4 of the first tool 2 has a fastening region 8, which adjoins the axial securing device 7 and with which the shank 4 is inserted into the second tool 3 in the assembled state. The fastening region 8 comprises two fastening sections 9 whose length corresponds to the thickness of the side wall 26, 27 (FIG. Fig. 3 ) of the second tool 3 corresponds. With the mounting portions 9 of the shaft 4 is within the receptacle 10 and within a in Fig. 2 not visible, opposite receiving 11. Between the two mounting portions 9 is a portion 29 which is disposed in the interior of the second tool 3. As Fig. 3 shows, the portion 29 of the shaft 4 extends through an inner space 25 of the second tool 3. How Fig. 3 Also shows, the second tool 3 has a first wall portion 26 and a second, the first wall portion 26 opposite wall portion 27. At the second wall portion 27, the axial securing 7 of the shaft 4 abuts. The first wall portion 26 is closer to the tip 5 of the first tool 2 than the second wall portion 27.

As Fig. 4 shows, the first receptacle 10 in the first wall portion 26 is formed and the second, opposite receptacle 11 in the second wall portion 27. The shaft 4 protrudes through both receptacles 10 and 11, wherein in each case a fixing portion 9 is disposed within a receptacle 10, 11. Due to the coordinated cross-section of the receptacles 10 and 11 and the shaft 4, the first tool 2 is held against rotation in the receptacles 10 and 11 of the second tool 3. The first tool 2 can not rotate about its longitudinal central axis 17. For fixing the first tool 2 in the direction of its longitudinal center axis 17 on the second tool 3 are in Fig. 5 shown axial fuses 12 and 13 are provided. The axial fuses 12 and 13 are advantageously made by caulking the first tool 2. As Fig. 5 shows, the second tool 3 has a longitudinal central axis 28. For the preparation of the axial Fuses 12 and 13 are in Fig. 5 schematically shown dies 19 and 20 are provided. A lower die 20 is advanced through the attachment opening 6 to the shaft 4 of the first tool 2. An upper die 19 is inserted from the opposite side into the interior 25 of the second tool 3. By appropriate shaping of the dies 19 and 20, the axial fuses 12 and 13 are produced. It can be provided to arrange the first tool 2 and the second tool 3 stationary and to move both the upper die 19 and the lower die 20 during caulking. Alternatively, the second tool 3 can be arranged on one of the embossing dies 19, 20 and only the other embossing stamp 19, 20 can be moved.

The FIGS. 6 to 8 show the configuration of the axial fuses 12 and 13 in detail. In the exemplary embodiment, both axial fuses 12 and 13 are arranged in the section 29 of the first tool 2, so are in the interior 25 of the second tool 3. Thus, the axial fuses 12 and 13 are hidden in side view of the hand tool 1 from the second tool 3 and not visible , This results in an attractive appearance of the hand tool 1.

The axial securing device 12 is arranged adjacent to the receptacle 10 and comprises a first securing section 15, on which the material of the shaft 4 has been displaced laterally relative to the longitudinal central axis 17. The longitudinal center axis 18 of the first tool 2 extends on the side facing the receptacle 10 of the first securing portion 15 in the embodiment at an angle α to the longitudinal center axis 17, the comparatively is large and advantageously more than 10 °. The axial securing device 13 comprises a securing section 16 which, in the sectional view shown, which contains the longitudinal central axes 17 and 28 of the tools 2 and 3, is arranged on the side of the longitudinal center axis 17 opposite the securing section 15. The second securing portion 16 abuts against the wall portion 27 and is disposed immediately adjacent to the receptacle 11. On the outside of the wall portion 27, the axial securing 7 is arranged.

As Fig. 7 schematically shows, the axial fuses 12 and 13 are formed so that the axial securing 12 a force F ₁ on the first wall portion 26 and the axial securing 13 a force F ₂ on the second wall portion 27 exerts. The forces F ₁ and F ₂ are oppositely aligned and act from the interior 25 to the outside. As a result, the portion 29 is held without play between the wall sections 26 and 27. Advantageously, the section 29 exerts a biasing force on the wall sections 26 and 27. For this purpose, the caulking of the shaft 4 was advantageously carried out so that a length o of the section 29 between the wall sections 26 and 27 has increased during caulking and the second tool 3 is slightly expanded, for example by 0.1 mm to 1 mm. As a result, the second tool 3 is clamped between the receptacles 10 and 11 on the first tool 2.

Fig. 8 shows the design of the axial fuse 12 in detail. The axial securing 12 comprises the first securing section 15 and a recess 21 arranged on the opposite longitudinal side of the first tool 2. The recess 21 is produced during the caulking process by displacement of the material of the first tool 2 perpendicular to the longitudinal central axis 17 of the first tool 2. The caulking is so stated that the material 22 of the first tool 2 has been pressed into the gap between the first tool 2 and the second tool 3. The receptacle 10 has an inner wall 30 which limits the gap. When inserting the first tool 2 in the second tool 3 is advantageous to compensate for manufacturing tolerances game at the receptacles 10 and 11. By displacing the material 22 of the first tool 2 in the gap between the inner wall 30 of the receptacle 10 and the outer periphery of the first Tool 2 is eliminated this game, and there is a firm connection of the first tool 2 and second tool 3. How Fig. 8 Also shows, has an outer side 24 of the first securing portion 15 to the longitudinal center axis 17 a distance a, which is greater than a distance b of the inner wall 30 to the longitudinal central axis 17. The distance b is measured from a point 14 of the inner wall 30, which is assigned to the first securing portion 15. The distances a and b are measured in the same longitudinal plane of the central axis 17 containing cutting plane. The location 14 is the location at which a projection of the Securing portion 15 on the inner wall 30 of the receptacle 10 in the direction of the longitudinal center axis 17 is located. Characterized in that the distance a is greater than the associated distance b, the first tool 2 in the illustration in Fig. 8 not with respect to the second tool 3 to the left, ie in the direction of the tip 5 of the tool 2, move. In the Fig. 6 shown axial fuse 13 causes a positional backup in the opposite direction. Also in the case of the axial securing device 13, it is provided that the material of the first tool 2 is pressed into the gap formed between the receptacle 11 and the outer circumference of the shaft 4 in order to achieve a form-locking fixation. This can be achieved by suitable design of the die.

As Fig. 9 schematically shows, in the manufacture of the axial fuses 12 and 13 simultaneously with lateral stamping dies 23, the axial securing 7 are formed. Alternatively or additionally, the tip 5 of the first tool 2 can be formed by not shown, correspondingly formed die.

Fig. 10 shows an embodiment of a hand tool 31, which has an axial securing 13 in the interior 25 and a further axial securing 32. The same reference numerals designate the same elements in all figures. The axial securing 32 is designed in accordance with the axial securing 13 and has a securing section 35. However, the securing section 35 is not arranged in the interior 25, but on the tip 5 (FIG. Fig. 9 ) facing the interior 25 side facing away from the wall portion 26. The axial fuse 32 is characterized visible from the outside. Due to the good accessibility, the axial fuse 32 is easy to manufacture. The axial fuses 32 and 13 secure the first tool 2 against movement to the tip 5 facing away, the axial securing 7 facing the end. About the axial fuses 7 and 32 is a position assurance of the first tool 2 in both directions, ie towards the tip 5 back and in the opposite direction, achieved, so that the axial securing 13 also omitted can.

As Fig. 11 shows, the axial fuses 13 and 32 exert forces F ₁ , F ₂ , which act in the direction of the axial securing 7. The axial securing 7 exerts a force F ₃ on the wall section 27, which counteracts the forces F ₁ and F ₂ . The second tool 3 is advantageously braced between the axial fuse 32 and the axial fuse 7, so that there is a backlash-free fixation of the second tool 3 under bias.

Fig. 12 shows a further embodiment of a hand tool 41, which comprises a first tool 42 and a second tool 3. The first tool 42 differs from the tool 2 by the design of the tip 5 facing away from the end. The first tool 42 has no axial securing 7, but is adjacent to the mounting portion 8 with a constant outer diameter and a constant cross-sectional shape. Fig. 13 shows the first tool 42 and the second tool 3 after insertion of the first tool 42 in the receptacles 10 and 11 of the second tool. 3 Fig. 14 shows the arrangement in a partially sectional view. The section 29 extends through the interior 25 of the second tool 3. The mounting portions 9 are each in a receptacle 10 and 11. The first tool 42 is - except for the tip 5 - executed with a constant, in the embodiment hexagonal cross-section and can completely through the Shots 10 and 11 are pushed. Due to the lack of axial securing 7, the first tool 42 is loosely in the second tool. 3 Fig. 15 shows the arrangement after the caulking. On the first tool 42 axial fuses 12 and 13 are provided which have securing portions 15 and 16. The design of the axial fuses 12 and 13 corresponds to those of the FIGS. 6 to 8 discussed in detail axial fuses 12 and 13. The axial fuses 12 and 13 practice in Fig. 16 shown forces F ₁ and F ₂ on the wall sections 26 and 27 of the second tool 3 from. In this case, the portion 29 may have been lengthened during caulking, so that the wall portions 26 and 27 are clamped by the first tool 42 between the receptacles 10 and 11.

Fig. 17 shows an embodiment of a hand tool 51, which has a single axial securing 52, which extends over the entire portion 29. The section 29 designates the longitudinal section between the two fastening sections 9. In the exemplary embodiment, the axial securing 52, which likewise denotes a longitudinal section of the first tool 42, coincides with the section 29. The axial securing 52 comprises two securing sections 55 and 56 which are arranged on opposite sides of the longitudinal central axis 17 and in each case mark the regions projecting beyond the undeformed contour of the shaft 4. The undeformed contour of the shaft 4 is in Fig. 17 illustrated by dashed lines. As Fig. 17 shows, has the outer side 24 in the securing portions 55 and 56 each have a distance c to the longitudinal central axis 17, which is greater than that in Fig. 8 shown distance b of the associated inner wall 30 of the receptacle 10 and the receptacle 11 is. The securing portions 55 and 56 exert forces F ₁ and F ₂ on the wall portions 26 and 27, which are opposite to each other and each point from the inner space 25 to the outside and thereby clamp the second tool 3.

As Fig. 18 shows, the region of the first tool 42, which forms the axial securing 52, in the view in the direction of the longitudinal central axis 28 of the second tool 3 has a reduced thickness. In the exemplary embodiment, the walls are curved in section 29.

Fig. 19 shows an alternative embodiment of a hand tool 61, whose design in the in Fig. 19 shown sectional plane through the longitudinal center axes 17 and 28 corresponds to the design of the hand tool 51. In the exemplary embodiment, the securing portion 65 extends annularly around the entire portion 29. The axial fuse 62 is advantageously not made as the axial fuse 52 by die, which in Direction of the longitudinal central axis 28 are introduced into the second tool 3, but by a pressing tool 63 which acts between the tip 5 and the second tool 3 on the first tool 42 and serves to fix the first tool 42 in this area. On the opposite, protruding from the second tool 3 side of the first tool 42 is a Anvil 64 provided. To produce the axial securing 62, the pressing tool 63 is moved in the direction of the arrow 67, that is to say in the direction of the second tool 3. As a result, the portion 29 of the first tool 42 is compressed and thus the axial securing 62 is produced.

The FIGS. 20 and 21 show an embodiment of a hand tool 71, which is composed of a first tool 42 and a second tool 3. The portion 29 of the first tool 42, which projects through the inner space 25 of the second tool 3, has two axial fuses 72 and 73. The first axial fuse 72 is disposed adjacent to the wall portion 26 and the second axial fuse 73 adjacent to the wall portion 27 axial fuse 72 and the axial fuse 73 are mirror-symmetrical to the longitudinal central axis 28 containing, arranged perpendicular to the longitudinal central axis 17 mirror plane. The axial securing devices 72 and 73 each have a first securing section 75 and a second securing section 76, which are arranged on opposite sides of the longitudinal central axis 17 in the sectional plane shown. The securing sections 75 and 76 each have on their outer sides a distance d from the longitudinal central axis 17, which is significantly greater than the distance b (FIG. Fig. 8 ) of the inner wall 30 of the receptacles 10, 11 at the securing portions 75, 76 associated point 14. The securing portions 75 and 76 are composed in section of straight lines, so that an edge on the outside of the securing portions 75 and 76 results. The axial securing devices 72 and 73 are arranged on the wall sections 26 and 27 such that they each exert an outwardly acting force F ₁ , F ₂ on the wall sections 26 and 27 and thereby clamp the second tool 3 under pretension on the first tool 42. Between the axial fuses 72 and 73, a central region 74 is arranged, whose width in the in Fig. 20 shown sectional view is smaller than the outer diameter of the shaft 4.

As Fig. 21 shows the axial fuses 72 and 73 in a view in the direction of the longitudinal central axis 28 has a significantly reduced diameter, while the diameter at the central region 74 is greater than that of the shaft 4. The axial fuses are advantageous by deforming the cross sections of the first work train 42 and / or by axially displacing material of the central region 74 into the securing portions 75 and 76.

The FIGS. 22 and 23 show a hand tool 81, whose design substantially corresponds to that of the hand tool 71. The hand tool 81 has in the interior 25 of the second tool 3 arranged portion 29, two axial fuses 82 and 83, between which a central region 84 is located. The axial fuses are each formed by securing portions 85 and 86, which are arranged in the sectional view shown on opposite sides of the longitudinal central axis 17 and the longitudinal central axis 17 have a distance e, which is significantly greater than the distance b of the inner wall 30 at the associated location 14th to the longitudinal central axis 17 is. The axial fuses 82 and 83 differ from the axial fuses 72 and 73 in the outer contour, which is rounded at the axial fuses 82 and 83. Also in the in Fig. 23 shown view in the direction of the longitudinal central axis 28, the outer contour of the axial fuses 82 and 83 and also the outer contour of the central region 84 is rounded. Even with the hand tool 81, the axial fuses 82, 83 have been advantageously produced by deformation of the cross section of the shaft 4. In a sectional plane, the diameter of the shaft 4 is increased, while in another sectional plane (FIG. Fig. 23 ) is reduced in the region of the axial fuses 82, 83.

The FIGS. 24 and 25 show an embodiment of a hand tool 91, which has an axial securing 92. The axial securing 92 is produced by displacing the material of the shaft 4 in the section 29 in a direction transverse, in particular perpendicular to the longitudinal central axis 17. The cross-sectional shape is thus the same in each sectional plane of the shaft 4. However, the distance between the outer side and the longitudinal center axis 17 varies. The axial securing 92 has a securing section 95, in which the distance g from the longitudinal central axis 17 is maximum and significantly greater than the distance b (FIG. Fig. 8 ) of the inner wall 30 to the longitudinal center axis 17 is. As a result, the shaft 4 can not be pulled in the direction of the longitudinal central axis 17 out of the receptacles 10 and 11.

As Fig. 24 shows, the securing portion 95 exerts on both wall portions 26 and 27 from the interior 25 outwardly directed forces F ₁ , F ₂ and thus braces the second tool 3 relative to the first tool 42nd

As Fig. 25 shows, the axial securing 92 in a viewing direction in the direction of the longitudinal central axis 28 has a reduced average width. However, the width can also be constant.

The FIGS. 26 and 27 show an embodiment of a hand tool 101, in which the width of the shaft 4 in the direction parallel to the longitudinal central axis 28 of the second tool 3 is constant, such as Fig. 27 shows. As Fig. 26 shows, the hand tool 101 has an axial securing 102 on the second tool 42, which has a securing portion 105 which is arranged offset relative to the longitudinal central axis 17. The securing portion 105 extends over the entire portion 29. The outside of the securing portion 105 has to the longitudinal central axis 17 a distance h, which is also greater than that in Fig. 8 shown distance b is. The axial securing device 102 is designed in such a way that the second tool 3 is braced on the first tool 42, since the securing section 105 exerts forces F ₁ and F ₂ on the wall sections 26 and 27, which are opposite to one another and point out of the inner space 25. The outer wall of the first tool 42 extends in the securing portion 105 straight or at an angle to the longitudinal center axis 17. A convex or concave configuration of the outer wall is not provided in this embodiment. The cross-sections of the first tool 42 are offset in the securing portion 105 relative to the lying outside of the second tool 3 portion of the shaft 4 with respect to the longitudinal center axis 17 to one side.

The FIGS. 28 and 29 show an embodiment of a hand tool 111, which has two axial fuses 112 and 113, which act in different cutting planes. The hand tool 111 has the axial securing 112, which has securing sections 115 and 116 on opposite sides of the longitudinal central axis 17 in a sectional plane through the longitudinal central axes 17 and 28. In the area of the axial securing 113 is reduced in this sectional plane of the outer diameter of the shaft 4. The axial fuse 112 is disposed adjacent to the wall portion 26. The axial securing 112 is designed such that it exerts a force F ₁ on the wall section 26 in the direction of the tip 5 of the first tool 42 (FIG. Fig. 12 ) exercises. The securing sections 115 and 116 have, with respect to the longitudinal central axis 17, a maximum distance i that is greater than the distance b (FIG. Fig. 8 ).

As Fig. 29 shows, the axial securing 113 in a viewing direction parallel to the longitudinal central axis 28 (FIG. Fig. 28 ) Securing portions 117 and 118, on which the outer diameter of the first tool 42 is increased. The securing portions 117 and 118 have on their outer side a distance i to the longitudinal center axis 17, which corresponds to the distance i of the securing portions 115 and 116 to the longitudinal central axis 17 in the embodiment. The axial securing 113 exerts on the wall section 27 a force F ₂ which corresponds to the force F ₁ (FIG. Fig. 28 ) of the axial fuse 112 is opposite. As a result, the second tool 3 is braced on the first tool 42. In the in Fig. 29 As shown, the axial securing device 112 has a reduced diameter. The axial fuses 112 and 113 are made by appropriately changing the cross-sectional shape of the shaft 4 during caulking.

In the in the FIGS. 30 and 31 shown embodiment of a hand tool 121, an axial securing 122 is provided. In the in Fig. 30 shown cutting plane containing the longitudinal central axes 17 and 28, the first tool 42 in the region of the axial securing 122 has a reduced diameter. In the in Fig. 31 shown viewing direction parallel to the longitudinal central axis 28 of the second tool 3, the axial securing 122 has securing portions 125 and 126, on which the diameter of the first tool 42 is increased. The securing sections 125 and 126 have a distance k, which is greater than the distance b, from the longitudinal center axis 17 on their outer side. Fig. 8 ). The securing portions 125 and 126 are arranged centrally between the wall portions 26 and 27 and extend over the entire length of the portion 29. Adjacent to the wall portions 26 and 27 reduces the distance to Longitudinal axis 17, wherein the outer wall is designed to be rectilinear in the embodiment.

In the in the FIGS. 32 and 33 shown embodiment of a hand tool 131, an axial securing 132 is provided, which extends over the entire length of the portion 29. In the in Fig. 32 shown sectional plane through the longitudinal central axis 17 and the longitudinal central axis 28, the outer diameter of the first tool 42 is reduced. The axial securing 132 is in the in Fig. 33 shown view in the direction of the longitudinal central axis 28 visible. Here, securing portions 135 and 136 are provided, on which the distance of the outer side of the first tool 42 to the longitudinal central axis 17 is increased. In the exemplary embodiment, a distance 1 is provided which is greater than the distance b (FIG. Fig. 8 ). The contour of the outer surface of the securing portions 135 and 136 is straight, wherein the distance to the longitudinal central axis 17 increases continuously to the middle between the side walls 26 and 27 and decreases again to the other direction. The securing portions 135 and 136 exert on the wall portions 26 and 27 forces F ₁ and F ₂ , which act away from each other on the wall portions 26 and 27. Also, the axial securing 132 is disposed within the second tool 3.

In the in the FIGS. 34 and 35 shown embodiment of a hand tool 141, an axial securing 142 is provided, which in the in Fig. 34 shown sectional plane through the longitudinal central axes 17 and 28 has a reduced outer diameter and in the in Fig. 35 shown in the direction of the longitudinal central axis 28 of the second tool 3 has an enlarged outer diameter. The axial fuse 142 is crowned, so with curved walls executed. The axial fuse 142 has securing portions 145 and 146 which are mirror-symmetrical to the in Fig. 34 are shown and have a maximum distance m to the longitudinal central axis 17, which is greater than the distance b (FIG. Fig. 8 ). The securing sections 145 and 146 exert forces F ₁ and F ₂ on the wall sections 26 and 27 which act outwardly and clamp the second tool 3 on the first tool 42.

In the in the FIGS. 36 and 37 shown embodiment of a hand tool 151, the first tool 42 is provided in the section 29 with an opening 153 which extends in the direction of the longitudinal central axis 28 of the second tool 3 through the first tool 42. The opening 153 can be generated, for example, by the formation of a slot in the first tool 42. The portions of the first tool 42 pushed outwardly from the opening 153 form as Fig. 37 shows securing portions 155 and 156, which form an axial securing 152. As Fig. 37 shows, the outside of the securing portion 155 to the longitudinal central axis 17 has a distance n. The securing portion 156 has a corresponding, in Fig. 37 The securing portions 155 and 156 exert on the wall portions 26 and 27 outwardly directed forces F ₁ and F ₂ , which clamp the second tool 3 on the first tool 42.

Fig. 38 shows an embodiment of a hand tool 161 having a first tool 42 and a second tool 163. The second tool 163 is designed as a socket wrench, but has no constant cross-section over its entire length, but a round section 164 with annular cross-section, which has the receptacles 10 and 11, and a Aufsteckabschnitt 165, which is formed in the embodiment as a hexagonal cross-section. In between, a transition section 166 extends.

The Figures 39 and 40 The first tool 42 protrudes through receptacles 10 and 11 in the circular section 164 of the second tool 163. The receptacles 10 and 11 are advantageously arranged opposite one another, so that the longitudinal center axes 17 and 28 of the Cut tools 42 and 163. The longitudinal central axes 17 and 28 are advantageously perpendicular to each other. This arrangement is advantageous for all embodiments. At the attachment portion 165, the attachment opening 6 is formed. Also Fig. 40 shows the design of the Aufsteckabschnitts 165. In Aufsteckabschnitt 165, the outer diameter of the second tool 3 relative to the circular portion 164 is increased. This results at the same wrench size of the second tool 163 a shorter length of the portion 29 of the first tool 42, which projects through the inner space 25, the second tool 163. For the fixed connection, not shown, of first tool 42 and second tool 163, each of the design of axial fuses shown in the preceding embodiments may be provided.

Advantageously, in all embodiments, the connection between the first tool 2, 42 and the second tool 3, 163 is formed so that material of the first tool 2, 42 in the gap between the inner wall 30 of the receptacles 10 and 11 and the shaft 4 of the first tool. 2 , 42 is pressed, so that the rotationally fixed connection between the two tools 2, 42 and 3, 163 play and advantageously carried out under bias. The gap does not have to be completely filled. A partial filling with material of the first tool 2, 42 may be sufficient for a backlash-free fixation, in particular under bias. Also, the axial securing advantageously causes a backlash-free fixation of the second tool 3, 163 on the first tool 2, 42. Preferably, a fixation under bias is provided.

The FIGS. 41 to 46 show alternative embodiments for the design and manufacture of an axial fuse 7 in a hand tool 1. As in Fig. 9 As shown, the axial securing device 7 can be produced with lateral stamping dies 23. In the embodiment of the FIGS. 41 and 42 On the other hand, an embossing punch 36 to be moved in the direction of the longitudinal center axis 17 is provided, which forms an axial securing 37. The axial securing device 37 is designed as a thickened end of the first tool 2 and has a centrally arranged recess 38. In the second tool 3, two stamping dies 34 are arranged, which serve to fix the first tool 3 in the direction of the longitudinal center axis 17 during the stamping process. At the same time, the dies 34 form an axial securing 33, which is arranged on the side of the wall section 27 lying opposite the axial securing 37. In the manufacture of the axial securing 37 and / or the axial securing 33, material of the first tool 2 is advantageously introduced into a gap formed between the first tool 2 and the second tool 3 pressed, so that there is a firm, backlash-free connection, advantageous under bias.

In the in the FIGS. 43 and 44 In the embodiment shown, a first tool 2 is provided which has a head 44 which is spread open by an embossing punch 44. The head 44 may be formed, for example, according to an axial securing 7. The embossing punch 44 is moved to spread the head 44 in the direction of the longitudinal central axis 17. When spreading the head 44, an axial securing 47 is formed, which has a central recess 48.

The FIGS. 45 and 46 show an embodiment in which an embossing die 54, which is moved in the direction of the longitudinal center axis 17 of a first tool 42, forms an axial securing 57. The first tool 42 has no thickened end. The embossing punch 54 widens that of the tip 5 (FIG. Fig. 14 ) facing away from the end of the first tool 42 and thereby forms a recess 58. Also in the embodiments of the FIGS. 43 to 46 are beneficial in the Fig. 41 shown embossing dies 34 which fix the second tool 2, 42 during caulking in the direction of the longitudinal central axis 17. Also in the embodiments of the FIGS. 43 to 46 is advantageously provided that material of the first tool 2, 42 is pressed into the gap between the first tool 2, 42 and the second tool 3, so that a play-free connection is achieved.

Fig. 47 shows a hand tool 171 according to the prior art. The hand tool 171 has a first tool 172, which is designed as a screwdriver and a tip 5 and an end facing away from the tip 174 has. The hand tool 171 has a second tool 173, namely a tubular socket wrench to which the first tool 172 is attached. For this purpose, a weld 175 is provided, with which the first tool 172 is butt-welded at its end 174 to the outer wall of the second tool 173. After welding, weld spatter is removed, and then the entire hand tool 171 is galvanized.

For the hand tools 1, 31, 51, 61, 71, 81, 91, 101, 111, 121, 131, 141, 151, 161 it is provided that the second tool 3, 163 has receptacles 10 and 11 into which the shaft 4 of the first tool 2, 42 is inserted. The first prior art tool 172 has a round cross-section. The invention, on the other hand, provides for the shaft 4 to be provided with a non-round, in the exemplary embodiments with a hexagonal cross-section. Another non-round cross-sectional shape may be advantageous. The receptacles 10 and 11 have a corresponding cross-sectional shape, so that the first tool 2, 42 by the design of its cross section and the cross section of the receptacles 10 and 11 rotationally fixed to the second tool 3, 163 is fixed. Advantageously, the first tool 2, 42 and the second tool 3, 163 are galvanized before joining each other as individual parts. Subsequently, the first tool 2, 42 is inserted into the receptacles 10, 11 of the second tool 3, 163 and caulked to form the at least one axial securing. As a result, a fixation of the first tool 2, 42 in the direction of the longitudinal central axis 17 is achieved. The longitudinal central axis 17 is the longitudinal central axis of the region of the first tool 2, 42 projecting from the second tool 3, 163 and facing away from the second tool 3, 163.

Claims (11)

1. Handheld tool with a first tool (2, 42) and a second tool (3, 163), wherein the first tool (2) has a longitudinal central axis (17), wherein the first tool (2, 42) has a fastening region (8), where it is unreleasably joined to the second tool (3, 163), wherein the second tool (3, 163) has at least one receptacle (10, 11), through which the fastening region (8) of the first tool (2, 42) extends, wherein the first tool (2, 42) has a non-circular cross-section at least in the fastening section (9) located in the receptacle (10, 11), wherein the receptacle (10, 11) has a cross-section matching the fastening section (9), in which the first tool (2, 42) is non-rotatably held, and wherein the position of the fastening section (9) is secured in the receptacle (10, 11) by at least one axial locking device (7, 12, 13, 32, 33, 37, 47, 52, 57, 62, 72, 73, 82, 83, 92, 102, 112, 113, 122, 132, 142, 152), wherein the axial locking device (7, 12, 13, 32, 33, 37, 47, 52, 57, 62, 72, 73, 82, 83, 92, 102, 112, 113, 122, 132, 142, 152) is represented by a locking section (15, 16, 35, 55, 56, 65, 75, 76, 85, 86, 95, 105, 115, 116, 117, 118, 125, 126, 135, 136, 145, 146, 155, 156) of the first tool (2),
   characterised in that the outside of the first tool (2, 42) has in the locking section (15, 16, 35, 55, 56, 65, 75, 76, 85, 86, 95, 105, 115, 116, 117, 118, 125, 126, 135, 136, 145, 146, 155, 156) a distance (a, c, d, e, g, h, i, k, 1, m, n) which is greater than a distance (b) of the associated point (14) of the inner wall (30) of the receptacle (10, 11) from the longitudinal central axis (17).
2. Handheld tool according to claim 1,
   characterised in that the axial locking device (7, 12, 13, 32, 33, 37, 47, 52, 57, 62, 72, 73, 82, 83, 92, 102, 112, 113, 122, 132, 142, 152) is located adjacent to the receptacle (10, 11).
3. Handheld tool according to claim 1 or 2,
   characterised in that the second tool (3, 163) has a first receptacle (10) and a second receptacle (11), which are arranged opposite each other and through which the fastening region (8) of the first tool (2, 42) extends.
4. Handheld tool according to claim 3,
   characterised in that a first axial locking device (12, 72, 82, 112) is provided adjacent to the first receptacle (10) and a second axial locking device (7, 13, 33, 37, 47, 57, 73, 83 113) is provided adjacent to the second receptacle (11).
5. Handheld tool according to claim 3 or 4,
   characterised in that at least one axial locking device (12, 13, 33, 52, 62, 72, 73, 82, 83, 92, 102, 112, 113, 122, 132, 142, 152) is located between the receptacles.
6. Handheld tool according to any of claims 1 to 5,
   characterised in that the cross-sectional shape in the locking section (55, 56, 65, 75, 76, 85, 86, 115, 116, 125, 126, 135, 136, 145, 146, 155, 156) differs from the cross-sectional shape in the fastening section (9).
7. Handheld tool according to any of claims 1 to 6,
   characterised in that the at least one locking section (15, 16, 35, 55, 56, 65, 75, 76, 85, 86, 95, 105, 115, 116, 117, 118, 125, 126, 135, 136, 145, 146, 155, 156) holds the first tool (2, 42) in the second tool (3, 163) without play.
8. Handheld tool according to claim 7,
   characterised in that the at least one locking section (15, 16, 35, 55, 56, 65, 75, 76, 85, 86, 95, 105, 115, 116, 117, 118, 125, 126, 135, 136, 145, 146, 155, 156) holds the first tool (2, 42) in the second tool (3, 163) with preload.
9. Handheld tool according to any of claims 1 to 8,
   characterised in that the first tool (2, 42) is designed to be rod-shaped, in particular as a screwdriver.
10. Handheld tool according to any of claims 1 to 9,
    characterised in that the second tool (3, 163) is designed to be tubular, in particular as a socket spanner.
11. Method for producing a handheld tool according to any of claims 1 to 10,
    wherein the first tool (2, 42) is inserted into the at least one receptacle (10, 11) of the second tool (3, 163) and in a following step the at least one axial locking device (7, 12, 13, 32, 33, 37, 47, 52, 57, 62, 72, 73, 82, 83, 92, 102, 112, 113, 122, 132, 142, 152) is produced by peening the first tool (2, 42),
    characterised in that in the peening process of the first tool (2, 42) material (22) of the first tool (2, 42) is displaced into the receptacle (10, 11), so that the material (22) at least partially fills the gap between the first tool (2, 42) and the second tool (3, 163) and secures the first tool (2, 42) in the receptacle (10, 11) without play.

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