DE10240731A1 - Wrench - Google Patents

Abstract

The invention relates to a screwing tool (7), comprising an attachment tool (1) and at least one actuating element (8) which can be detachably coupled to the attachment tool (1) for torque transmission by means of a plug connection (9), the plug connection (9) being one Has plug projection (5) and a cross-section adapted to it (11). For this purpose, a recess (12) is formed in the plug-in projection (5), which is part-ring-shaped, leaving an opening facing the free end of the plug-in projection (5) with a defined free passage width, and also on the plug-in receptacle (11) in a sliding direction through the recess (12) displaceable slide latch is provided, the slide latch a holding member (15), the cross section of which is larger than the passage width in the plugging direction, and a release member (16) adjacent in the sliding direction, the cross section of which is less than or equal to the passage width in the plugging direction , having.

Description

The present invention relates to a screwing tool, comprising at least one attachment tool and at least one actuator, that with the attachment tool for torque transmission by means of a plug connection solvable can be coupled, the plug connection having a plug projection has a plug-in receptacle adapted to it in a cross section.

The basic idea of a screwdriver with an attachment tool attached to an interchangeable handle with a plug connection is well known. So was the applicant the concept of a replaceable wrench that into an opening of an interchangeable handle is presented at a trade fair. In such known screwing tools, it is perceived as a disadvantage that with a plug projection in a plug receptacle of the actuating element inserted attachment tool on this with the simplest possible Not sufficiently secure to fasten plug connection in plug direction is so that the risk of unintentional detachment of the Attachment tool and therefore possible Injury or damage consists. The present invention lies against this background the task of a generic screwdriver advantageous further education.

The aforementioned object is achieved first and foremost by the subject matter of claim 1, the focus being on the fact that the plug-in projection forms a recess which is enclosed in a partial ring with a passage width leaving an opening facing the free end of the plug-in projection, and that at the A plug-in receptacle is provided in a sliding direction which can be displaced by the recess which can be inserted therein with the plug-in projection, the sliding bolt being a holding member, the cross-section of which in the plug-in direction is greater than the passage width, and a release member adjacent in the sliding direction, the cross-section of which is less than or equal to the plug-in direction Passage width is. The screwing tool according to the invention thus has an easy-to-use and, at the same time, reliable attachment of an attachment tool to the actuating element, which enables a plug connection. In order to attach an attachment tool to the actuating element, the sliding bolt is moved in the sliding direction into a position in which the release member passes through the receiving space of the plug-in receptacle with respect to the cross-section, so that when the plug-in protrusion is inserted into the receiving space of the plug-in receptacle, the release member passes through the edge opening with the free passage width enters the recess. In this state, the sliding bolt can be shifted in the sliding direction into an adjacent sliding position, in which instead of the release member the holding member passes through the recess of the plug-in projection, whereupon, due to the larger cross-section of the holding member in the plug-in direction, a reliable locking of the attachment tool on the actuating element is achieved is. In a preferred embodiment it is provided that the plug-in projection is provided on the attachment tool and the plug-in receptacle on the actuating element, the actuating element preferably being an extension element which forms a handle, for example an elongated flat steel, a tube or the like with an end Handle can act. This offers the advantage that, for example, only one handle with a corresponding receptacle is required, while any number of attachment tools with a plug receptacle of simple construction can be used as required. In a further preferred embodiment, it is provided that the sliding bolt can be displaced against the force of a spring element which acts on this force element, for example a flat spring. This enables the setting of a preferred rest position of the sliding bolt, in which the sliding bolt is located without additional external force and from which it can only be deliberately moved out when required. It is expedient if the rest position corresponds to the holding or locking position of the sliding bolt, in which the holding member passes through a cross section provided for receiving the plug-in projection in the plug-in receptacle. It is thereby achieved that an attachment tool connected to the actuating element is automatically locked thereon in the plugging direction without external force, so that there is no risk of unintentional loosening. It is further preferred that the attachment tool is designed as an attachment wrench or attachment screwdriver. Furthermore, the screwing tool can expediently be designed as a multi-function tool with a plurality of interchangeable attachment tools, the shape of which is adapted to different screwing bodies, such as nuts, shaft nuts, screws and the like. In addition, it is expedient if the sliding direction and thus the longitudinal extension direction of the sliding bolt are substantially perpendicular to the plugging direction and thereby also preferably substantially perpendicular to the rotational plane of the plug receptacle cross section provided for receiving the plug-in projection with the recess Screwdriver extends. This advantageously achieves kinematic decoupling of a torque or a torque exerted on a screw or the like, on the one hand, from the external force to be displaced to displace the sliding bolt. In an embodiment as an auxiliary wrench, this can in principle be designed as an open ring wrench, that is to say as an open-ended wrench, as a combination wrench, as a half-open ring wrench, ie with an opening width that is reduced compared to the wrench size, or as a closed ring wrench, with regard to the key internal profile or hollow key profile, which is used to positively receive the screw body. According to a further aspect of the present invention, which also has independent significance, there is the possibility that the auxiliary wrench forms a polygonal key inner profile which has a plurality of corners at directional transitions between edges of the key inner profile, the edge and / or corner positions being connected to a polydirectional form fit are adapted with at least two different polygonal profiles, the number of corners of a first and the number of corners of a second polygonal profile, to each of which an adaptation is given, not being integral multiples or divisors of one another. The corner positions of the corners of the key inner profile are understood to mean the respective relative corner position, ie the corner distance from one another, and the relative corner angle position, ie the angular position of the corner symmetry axes running through the center of the corner. Such an adaptation to a polydirectional form fit can preferably be implemented with regard to a hexagon often realized on screw bodies and an octagon, more preferably the same width across flats, with further preferred configurations and advantages of a key inner profile according to the invention, adapted to different polygon profiles, also on the associated subsequent parts reference is made to the description. The attachment tool can also be designed as an attachment wrench, having an internal key profile such as that of a control head or bottom bracket wrench and / or pedal wrench and / or locknut wrench and / or socket wrench for semi-oval nuts, for example on bottom brackets. In addition, an expedient further development is possible in that the attachment tool for torque transmission also has a through opening with a cross-sectional profile that is positively adapted to the profile pin cross section by means of a torque wrench having a profile pin, a ratchet or the like. The aspect of a simultaneous implementation of the plug-in projection according to the invention and the aforementioned passage opening on an attachment tool is also of independent importance in the context of the present invention. Furthermore, it is also preferred that the center distance between a screw, nut, shaft nut or the like held in a form-fitting manner in an attachment wrench on the one hand and the passage opening adapted to the cross section of the profile pin on the other hand is dimensioned uniformly within the screw or rotary plane. In addition, there is the possibility that the thickness of the expediently plate-like attachment tool corresponds at least in the area of the through opening to a spring catch spacing of a latching element projecting resiliently from the profiled pin of a contact shoulder for the attachment tool. In view of the independent importance of a combination of the plug-in projection according to the invention and the aforementioned passage opening on an attachment tool, reference is also made to the following parts of the description for advantages and preferred further developments in this regard. The aforementioned features according to the invention, both individually and in combination, enable improved handling of a screwing tool, in particular also for repairs or maintenance work on bicycles, mopeds or the like, with regard to the screwing bodies which are customary there and the spatial conditions there.

According to a separate one Aspect the present invention relates to a wrench tool, having a polygonal key inner profile, where the key inner profile is one A plurality of profile edges running in different profile directions has to form-fitting torque transmission to a first polygonal outer profile having a first number of edges are adjusted.

Wrench tools of this type are known in the prior art as open wrenches (open-end wrenches) and as semi-open and closed ring wrenches in order to transmit torque to screw bodies, such as screws, nuts, shaft nuts and the like, which are provided with the polygonal outer profile, during assembly or disassembly , The preferably regular polygonal outer profiles occur in a large number of different numbers of corners or edges and in a large number of sizes, ie with different edge lengths, standardizations being customary in practice for reducing the number of variants. For example, the DIN 475 standard wrench widths for two, four, six and eight edges, i.e. distances between parallel outer edges, can be found, whereby there are numerous matching polygonal profiles (e.g. hexagon and octagon) that differ in terms of the number of edges or corners Wrench sizes are specified. This means that with a known open-ended wrench, using only the key profile edges that are spaced apart in parallel across the width of the key, a torque to various polygonal outer profiles is also provided there same flank width corresponding width parallel outer flanks can be transferred. However, the parallel force application edges or surfaces to be used alone only allow unidirectional introduction of force into the screw body, so that it is only freely displaceable between the parallel wrench flanks at a key-wide distance and is therefore only unsafe and with the risk of slipping. With a generic wrench tool, in which the torque is transmitted through a plurality of profile edges running in different profile directions, the risk of slipping is avoided, but the known embodiments only have a geometrical adaptation to only a single polygonal shape, i.e., for example, only one Hexagon or only to an octagon, so that here as a disadvantage a loss of versatility can be accepted. Proceeding from a generic wrench tool, the invention is therefore based on the further aspect of the object of further developing it in a manner which is advantageous in use, so that a more reliable torque transmission to a plurality of different polygonal outer profiles of screw bodies is made possible.

This object is achieved according to the invention first and essentially in connection with the features that the key inner profile has a plurality of profile edges which run in different profile directions and which are adapted for positive torque transmission to a second polygonal profile having a second number of edges, the first and the second The number of edges is preferably not an integral part or a multiple of one another. While the polygonal profiles of screw bodies form regular polygons (polygons), such as regular hexagons or octagons, in many cases with regard to the plane of rotation, the design of the key inner profile according to the invention forms an irregular, open, semi-open or closed polygon profile, with some of which Key profile edges are positively assigned to a first polygonal outer profile and certain key profile edges to a second or further, different polygonal outer profile for torque transmission. Depending on the design, individual key profile edges can be important for the torque transmission to several different polygonal outer profiles, so that they have a multiple function. The adaptation of the respective profile edges is possible in such a way that a geometrical positional and possibly lengthwise assignment to certain edges or edge sections of the respective polygonal outer profile is carried out. The proposed solution, on the one hand, enables the wrench tool to be used in a variety of ways for different screw bodies which differ in terms of their polygonal outer profile, while on the other hand the multi-directional force application, i.e. multi-directional support of the screw body, allows the screw body to be securely torsionally rigidly received by the wrench tool. In particular, an embodiment is possible for this purpose, in which all the profile edges of the key inner profile pass through a common plane of rotation perpendicular to the axis of rotation of the screw body or lie within this plane of rotation. In a further preferred embodiment it is provided that the key inner profile has one or more corners at transitions between edges, the corner positions of which are adapted for positive torque transmission to the first polygonal outer profile having a first number of corners, that the key profile has one or more corners, the corner positions of which a positive torque transmission is adapted to the second polygonal outer profile having a second number of corners, the first and second number of corners preferably not being integral multiples or fractions of one another. Such a configuration achieves an even more extensive adaptation of the key inner profile to the respective outer contour of various polygonal outer profiles of screw bodies, that is to say an even further toothing, and thus further improves the reliability of the screw body being received in the wrench tool. Furthermore, it is preferably contemplated that the edge and / or corner positions as a whole are adapted to a hexagon and an octagon, but in principle an adaptation to different polygonal profiles with any number of corners is conceivable. For expedient further development, it is also proposed that the wrench tool be designed as a half-open ring spanner, ie as a ring spanner, the opening width of which is smaller than the spanner width due to projections that extend toward one another on the opening side. This has the advantage that the projections can also form profile edges and / or profile corners, which can make a contribution to a positive torque transmission. At the same time, torque transmission to a nut in a pipe fitting or the like also remains possible, for which purpose the semi-open ring spanner with its ring opening is first pushed laterally over the comparatively thinner pipe and then in the pipe direction over the nut. Such a half-open ring spanner is therefore particularly suitable as a versatile repair tool for bicycles, mopeds and the like, in which comparable screw connections can be found, for example, in the area of the handlebar head and wheel forks. The irregular polygonal key inner profile according to the invention can therefore in principle be closed, semi-open or open. The addressed Corners do not have to be sharp-edged, but can allow certain curves, as is common with wrenches. In a further preferred embodiment it is provided that at least four profile sides with a length that are adapted to a hexagon are configured on the wall of the key inner profile, of which two opposite profile sides run straight through and the remaining profile sides connecting the opposite profile sides with one another in the length section with recesses adapted to an octagon are provided. It is thereby achieved that a continuous force attack occurs on the continuous profile sides, preferably parallel to the key mouth opening direction, on opposite flanks of a hexagon as well as on opposite flanks of an octagon. Furthermore, there is the possibility that individual key profile edges have a curved course within the key profile level. The corner areas themselves can preferably be obtuse-angled, but in principle also be acute-angled. Furthermore, there is the possibility that the key inner profile in the key profile area or key profile base facing an actuating element and / or in the key profile area or key profile dome opposite it, each have three corner areas adapted to a hexagon and two, each individually in between, adapted to an octagon having. In addition, it is preferably contemplated that the wrench tool is designed as an attachment wrench that can be releasably coupled to a push-on handle and / or a torque wrench, a ratchet or the like for torque transmission, with regard to possible configurations and advantages also to others, this as an independent one Aspects of the invention related parts of the description.

According to a separate one Aspect, the present invention relates to an attachment tool, in particular Attachment wrench or Attachment screwdriver, having a web-like plug-in projection, the plug-in projection for torque transmission by means of an actuating element, like an extension element forming a handle, in one of which Plug-in projection cross-section, form-fittingly adapted plug-in receptacle of the actuator solvable is sustainable.

Such attachments are in State of the art known, to what the foregoing to known screwing tools, comprising at least one attachment tool and at least one actuator, is referred. In the known, only via a plug-in projection extension element connectable with one hand Attachment tools are only used in certain applications for reasons of space difficult or even restricted handling possible. Such Difficulties occur, for example, with one within their plane of rotation Extendable handle Vorsatzschraubschlüsseln on when doing the for an at least partial rotation required free space in the The area of the handle does not exist. With this in mind is the object of the present invention, a generic attachment tool Advanced use advantage, so that especially under cramped space handling is made easier.

The above-mentioned object is achieved by the invention first and essentially in connection with the features that the attachment tool for torque transmission by means of an actuating element having a profile pin, such as a torque wrench or a ratchet, has a through-opening which has a positive fit on the profile pin cross section in the torque plane has adapted opening cross-section. In this way, it is initially advantageously achieved that there is less dependence on the direction of attack or the available movement space due to the various connections for extension means implemented on the attachment tool. In principle, there is also the possibility that associated extension means are simultaneously connected to the attachment tool at the various connections, so that, depending on the space available, for example to increase the torque, two-hand operation of the attachment tool is also possible in principle. To improve the connection variability, it is also possible for the plug-in projection and the passage opening to extend within the same plane, more preferably within the plate plane, in the case of a preferably plate-like attachment tool to minimize the space requirement. On such an attachment tool, which is preferably manufactured as a stamped part, the plug-in projection can have the shape of an elongated rectangle in the plane of the plate and more preferably have a recess which is partially annular in the direction of the free end of the plug-in projection. The through opening, which also extends in the plane of the plate, can preferably have a square cross section with a preferred edge length of 3/8 inch connection dimension, so that a suitable adaptation for a plug connection to a square profile pin used in torque wrenches or ratchets is realized. By extending the plug-in projection and the through opening in the manner described above within the same plane, it is advantageously achieved that respectively assigned extension means can be connected to the attachment tool in plug-on directions that are perpendicular to one another, thereby increasing the connection variability thereby further increasing the number of possible applications. In addition, the possibility of connecting a ratchet, which in principle also additionally exists, contributes to the versatility and easier handling of the attachment tool, since its operation requires only a small amount of movement. Furthermore, instead of a ratchet or a torque wrench, a rod-like or tubular extension part with a profile pin on the end face can be positively inserted into the through opening to bridge a space perpendicular to the plane of rotation, and the torque wrench or the ratchet with its profile pin in one on the opposite end of the extension part are used, form-fittingly adapted recess in the direction of rotation. To further increase the versatility of the attachment tool, in a further development there is also the possibility that the attachment tool is designed as an attachment wrench, the attachment wrench forming a polygonal key inner profile which has a plurality of corners at transitions between edges pointing in different profile directions, the edge and / or corner positions are adapted to a multi-directional form fit with at least two different polygonal profiles, and preferably the number of corners of a first and the number of corners of a second polygonal profile, to each of which an adjustment is made, are not integral multiples or parts to one another. In addition, there is also the possibility that the plate-like attachment tool has a uniform plate thickness, which is adapted to a ball detent spacing of the torque wrench, which, when locked, enables the attachment tool to rest against a shoulder of the torque wrench or the ratchet and thus practically without play , The aforementioned features of the attachment tool according to the invention are particularly suitable, both individually and in combination, in order to improve the handling of an attachment wrench with regard to the screw elements typically used on bicycles, mopeds and the like, as well as the limited possibility of attack there and the restricted range of movement. For this purpose, the attachment tool or the attachment wrench can, in particular, have special internal key profiles, such as those of control head and bottom bracket keys, pedal keys, locknuts or, for example, shell keys for semi-oval nuts on bottom brackets.

The present invention is described below Terms of the attached Described figures, in which preferred embodiments are shown are. It shows:

1 a plan view of a first preferred embodiment of an attachment wrench according to the invention;

2 a plan view of a preferred embodiment of a screwing tool according to the invention;

3 a bottom view of the in 2 shown embodiment;

4 a longitudinal section along section line IV-IV in 3 ;

5 a functional section along section line IV-IV with the attachment tool removed in the release position;

6 a functional section along section line IV-IV with the attachment tool removed in the locking position;

7 a sectional view, shown partially offset, along section line VII-VII in 5 , in contrast, enlarged;

8th a sectional view, shown partially offset, along section line VIII-VIII in 6 , in contrast, enlarged;

9 a plan view of the actuator after 2 ;

10 a bottom view of the actuator 9 ;

11 a plan view of a further preferred embodiment of the screwing tool according to the invention with an attachment tool and a torque wrench;

12 a side view of the in 11 embodiment shown in viewing direction XII;

13a - 13b further preferred embodiments of the attachment tool according to the invention;

14 an enlarged section of the in 13a Shown embodiment of the attachment tool with the hexagon and therein

15 an enlarged section of the in 13a shown attachment tool with octagon accommodated therein.

1 shows a plan view of a first preferred embodiment of an attachment tool according to the invention 1 , which is designed as an attachment wrench. The attachment tool 1 is particularly suitable, in accordance with a further aspect of the invention, with an actuating element, such as an elongated handle part, and / or a torque wrench or a ratchet as a screwing tool, in particular as a multi-function tool in connection with a plurality of interchangeable attachment tools having different key inside profiles, co. The in 1 The adapter wrench shown has a polygonal key inner profile 2 on which, as with reference to 13 to 15 explained, is adapted to a form-fitting, polydirectional torque transmission to a hexagon, as well as to an octagon, each with the same width across flats S. The version chosen for the display is around a so-called half-ring (also semi-open or semi) key, i.e. the key profile has, like a spanner, a wall-free peripheral area, but in contrast to an open spanner there is a narrowing of the key opening by using the key flanks spaced parallel in key width S, ie polygon sides or profile edges 3 projections 4 survive facing each other, so that the mouth size M is ultimately smaller than the key size S. The front wrench is in 1 To clarify its contours, it is initially reproduced without a screw, nut or the like which can be positively received in the direction of rotation, that is to say the plane of the drawing, but the center point P ₁ that results when the screw body is properly recorded, ie the point of intersection of its axis of rotation through the plane of the drawing, is indicated by dashed lines. The attachment tool 1 is in the in 1 selected embodiment as a stamped part, that is, plate-shaped with a uniform plate thickness, the plate plane running parallel to the drawing plane. In order to be able to serve as a component of a screwing tool according to the invention, the attachment tool has 1 a tab 5 for interaction with an actuating element (cf. 2 to 8th ) and a square through opening 6 for detachable, also torsionally rigid connection with a torque wrench, ratchet or the like (cf. 11 and 12 ) on.

2 shows a plan view of a screwing tool according to the invention 7 , which consists of an attachment tool 1 according to a further preferred embodiment with of 1 different key inner profile and an actuator 8th by means of a plug connection 9 is composed. The elongated actuator 8th acts as a torsionally rigid extension of the plug-in projection in the compilation shown, ie in the assembled state 5 and forms in the front tool 1 facing away a section of a handle 10 out. This enables a tool in the form of an open ring spanner (open-end wrench) 1 a positively received screw, nut or the like about the axis of rotation running through the point P ₁ a sufficient torque can be exerted by the increased leverage. With regard to the connector 9 the top view shows that the plug-in projection 5 into a plug receptacle opening on the end face of the actuating element 11 is plugged in. There is a stop at the end to limit the insertion depth 12 ' provided, while the torsionally rigid connection is based on a cross section over a length section e which is essentially free of movement clearance of the plug projection cross section into the plug receptacle cross section. Regarding the attachment tool 1 the design of the plug-in projection is correct 5 with that of 1 agree, so that these, as well as those shown in further figures with regard to the key profile, different attachment tools 1 on the actuator 8th are interchangeable. Accordingly, the plug receptacle 5 a recess 12 with inner diameter d (cf. 7 and 8th ) on which to the free end 13 is enclosed in a partial ring, leaving a passage width w. At the connector 11 a sliding lock is adapted to it 14 provided that is displaceable in a sliding direction perpendicular to the plugging direction in a guide of the plug receptacle. While the direction of insertion is represented by a double arrow with the designation X, the sliding direction corresponds to the double arrow with reference symbol Y. The sliding bolt 14 first has a holding member 15 on (cf. 7 . 8th ), whose cross-section or diameter h is adapted to the inner diameter d practically without play in the plug-in direction X, that is to say is greater than the passage width w. On the holding link 15 is then in one piece in the direction of displacement Y a release member 16 provided, the cross section or diameter f in the insertion direction X is slightly smaller than the passage width w. While 2 as a plan view only the front end of the holding member 15 recognizes, shows 3 the free end of the release link as a corresponding bottom view 16 , An overall illustration is illustrative of the function 4 as a sectional view of the screwing tool 7 along the section line IV-IV (cf. 3 ) refer to. From this it is clear that with regard to the plug receptacle 11 between an extension 17 of the actuating element and a rivet thereon in the example shown 18 attached plate 19 a recording room 20 is formed by the sliding bolt 14 is penetrated. The longitudinal displacement of the sliding bolt 14 in sliding direction Y is guided by the release element 16 a hole 21 passes with sliding fit. A captive retention of the sliding bolt is achieved in that the holding member 15 the comparatively smaller bore with the transition cone 21 can not go through and on the other hand by a flat spring 22 is pressurized by a fastener 23 on the actuator 8th is attached. The holding link 15 enters through a hole 24 in the actuator 8th and supports itself with its free end against the flat spring 22 from. In the in the 2 to 4 locking position shown is the sliding bolt 14 through the flat spring 22 due to the different diameters with the holding member 15 against the plate 19 , ie automatically brought into a defined locking position in which the holding member 15 the recess 12 of the plug-in projection 5 in form-fitting direction X.

A more detailed functional description of the preferred embodiment of the lockable plug connection according to the invention 9 between intent Tool 1 and actuator 8th will be discussed below with reference to the 5 to 8th given. The show 5 and 6 again longitudinal sections of the actuating element 8th along section line IV-IV according to 3 (The figures also show an area of the correspondingly cut attachment tool 1 ), with the assigned 7 and 8th the corresponding cross sections of the actuating element 8th along the in the 5 respectively. 6 reproduce the indicated cutting lines VII-VII or VIII-VIII and in the cutting or viewing direction behind the cut actuating element 8th lying plug-in projection 5 of the attachment tool 1 is shown laterally offset for clearer reproduction of the details. Functionally concern the 5 and 7 a release position in which the sliding bolt 14 in the example shown, manually against the force of the flat spring 22 is shifted into a sliding position in which the holding member realized thereon 15 in sliding direction Y completely from the recording room 20 has stepped out, so that the cross section reduced release member 16 of the sliding bar 14 continuously over the recording height of the recording room 20 extends. The recording room 20 owns in the in the 7 . 8th Cross section shown is a flat right-angled, enclosed on four sides, the receiving height in the direction of the narrow sides of the rectangular contour and the receiving width in the cross section mentioned extends perpendicular to this. With the attachment tool inserted 1 in the actuator 8th is that in the 7 . 8th shown cross section of the receiving space 20 due to the laterally offset cross-section of the plug-in projection 5 about the in 3 shown insertion depth e is filled in at the edges only while leaving sliding or transition fits in order to create a torsionally rigid connection. Based on this and the locked state realized here (cf. 2 to 4 ) is in the in 5 and 7 shown release position of the male projection 5 due to the aforementioned shifting of the sliding bolt 14 unlocked because the diameter f of the release link 16 slightly smaller than the passage width w at the free end 13 of the plug-in projection 5 dimensioned and a removal of the attachment tool 1 by pulling out the projection 5 from the recording room 20 in the outward arrow direction X is possible. By the length of the release link 16 in the sliding direction Y at least the sum of the receiving height of the receiving space 20 and thickness of the plate 19 This ensures that the desired release position can be easily controlled by moving the slide lock 14 until a flush conclusion of the free end of the release link 16 with the outside of the plate 19 or the actuator 8th is obtained. Will be after removing the attachment tool 1 from the actuator 8th the sliding latch 14 released, the spring moves 22 the sliding bolt while decreasing its deformation stress 14 in the in the 6 and 8th shown starting position back. The release link is based on this 14 under a remaining low pressure force of the spring 22 with a conical, opposite the bore 21 larger diameter edge or transition area of the holding member 15 against the inner wall of the recording room 20 from. Starting from that in the 6 and 8th In the separated state shown, the attachment tool previously removed or, if necessary, a different attachment tool, for example adapted to a different wrench size or screw shape 1 in reverse order of the steps described again with the actuator 8th be connected and locked. To do this, first the sliding latch 14 as far as possible against the force of the spring 22 shifted so that the plug-in projection 5 due to the coordinated width of the release link 16 and passage width w up to a contact of the free end 13 with the stop 12 ' of the recording room 20 in the inward plug-in direction X. Through subsequent relief and automatic relocation of the sliding bolt 14 grips the holding link 15 now form-fitting into the recess 12 of the plug-in projection 5 , so that there is a positive connection in plug-in direction X. In the described embodiment, one is also in relation to the line IV-IV in 3 Axially symmetrical shape of the connector 9 chosen so that an attachment tool 1 relative to the actuator 8th in two alternatives, positions rotated to each other by 180 ° about an axis parallel to the line IV-IV, which in connection with a key profile or mouth opening inclined to the axis of rotation allows greater versatility. Alternatively, the other attachment tools described in the present application can also be used 1 in the manner described with the actuator 8th get connected.

The actuator 8th is after removing the attachment tool 1 separately in 9 as a top view and in 10 shown as a bottom view.

11 shows a top view of a screwdriver 7 , in the arrangement chosen here from an attachment tool 1 and a torque wrench 25 is composed. In the example shown, the attachment tool designed as an open-ended spanner is correct 1 with that already in the 2 to 4 shown attachment tool, but instead of an open wrench, another, preferably also a further key profile described in the present application or another attachment screwing tool, such as a screwdriver, a polygonal mandrel or the like, can also be formed thereon. On the other hand, it is important that the attachment tool 1 in addition to the tab 5 , which enables a releasable locking to an actuating element in the manner described above, additionally a through -opening 6 has, by means of which the attachment tool 1 alternatively or in combination, also on the torque wrench 25 (or a ratchet or the like) with matching profile pin 26 can be connected. In the example shown, the through opening 6 like the profile pin 26 a square cross-section, with a sliding or transition fit in terms of size dimensions. In the within the drawing level of 11 horizontal direction of rotation of the torque wrench 25 about the axis of rotation running perpendicularly through the center of rotation P ₂ is thus between the attachment tool 1 and the torque wrench 25 realized a torsionally stiff, ie suitable for torque transmission connector. In the in the 11 and 12 Realized embodiment is the attachment tool 1 designed as a stamped part plate-like, the web-like plug-in projection 5 as well as the passage opening 6 extend within the plate plane, ie in the same plane. The plate thickness b is adapted to a ball detent spacing k, in which a spring-loaded from the profile pin 26 protruding locking ball 27 from one of the profile pins 26 surrounding facility 28 for the attachment tool 1 is spaced, cf. 12 with a corresponding side view and partial opening. With regard to the described possibility of using different attachment tools on the torque wrench even with a wrench profile that deviates from one another, it is further preferred that the center distance a between the aforementioned center of rotation P _{2 of} the torque wrench is used in the case of correspondingly used attachment screwing tools 25 and the center of rotation P _{1 of} a screw, nut or the like is uniform. This from the point of view that the uniform additional rotary lever arm of length a for all interchangeable attachment tools 1 the same deviation, in particular amplification of the torque actually transmitted to the screw, nut or the like compared to the torque set or displayed on or by the torque wrench, so that this deviation is to be specified using a likewise corresponding calculation formula.

13 shows with partial figures a) to f) top views of different preferred embodiments of an attachment tool according to the invention 1 , which can be used as an attachment wrench with regard to the respective geometric adaptation of your key inner profile 2 to differentiate between different screw parts, preferably used on bicycles, such as screws, nuts, shaft nuts and the like, the same reference numerals being provided for features with the same function. The attachment tools shown are suitable due to the plug-in projection realized on them 5 both for plugging and locking an actuating element, as with reference to 2 to 8th described, as well as with respect to the square through opening also provided thereon 6 alternatively or in combination, also for connecting a torque wrench, a ratchet or the like with - in the example shown square - protruding profile pins (cf. 11 and 12 ). 13a shows a preferred embodiment with a polygonal, but half-open key inner profile 2 , which is coordinated with respect to the position and dimensions of the profile edges and profile corners to a respective polydirectional torque transmission on a hexagon, as well as on an octagon preferably on a screw, nut, shaft nut or the like. 13b shows the same preferred embodiment, the respective position of a hexagon or octagon is indicated by dashed lines. The corresponding projection on top of one another also shows that the wrench size S of the hexagon and octagon is identical in the selected example and that, regardless of the hexagonal or octagonal head of a screw, the same distance a results. 13c shows a further preferred embodiment of an attachment tool 1 , whose key inner profile 2 also to a polydirectional form fit with a hexagon as well as with an octagon, but in opposite to the 13a and 13b smaller wrench size S is adapted. Despite the different width across flats S, the various exemplary embodiments are also correct with regard to the distance a between the center Pi of the screw body and the center P _{2 of} the through opening 6 for the reason already explained. Furthermore, in the embodiments produced as a stamped part, the shape of the outer contour is also in spite of the different wrench sizes S. 29 essentially the same. In contrast, the variant shows 13c compared to that in the 13a and 13b Execution shown stronger projections 4 adjacent to the profile opening, whose minimum thickness c with respect to the length dimension is approximately two to three times the length m of a profile side on the mouth edge 30 . 30 ' equivalent.

13d shows a top view of a further preferred embodiment of an attachment tool according to the invention 1 , the so-called shell key with regard to the design of the key inner profile 2 is adapted to a semi-oval nut, such as that used on bottom brackets of bicycles. At the in 13e Another preferred embodiment shown is the key inner profile 2 adapted to a torque transmission on a known lock nut or shaft nut. At the in 13f Another variant shown is a coordination of the key inner profile 2 provided like a pedal wrench for bicycles. With all of the in the 13a to 13f ge In the exemplary embodiments shown, the distance a between points P ₁ and P ₂ is correct, as is its distance (only in 13f drawn) into a component a 'in the direction of the longitudinal axis 31 of the plug-in projection 5 and the component a ″ perpendicular thereto. In terms of size, the square is the through opening 6 a side length of 3/8 inches is chosen.

The 14 and 15 each show an enlarged section of the 13a and 13b shown preferred embodiment of the attachment tool according to the invention 1 , This affects 14 a first application in which in the key inner profile 2 a hatched highlighted hexagon 36 a screw head for transmitting a torque is added. The key inner profile points to achieving a form-locking form within the drawing plane 2 a plurality of corners 39 . 40 . 41 . 42 and 43 on, with regard to their relative position, ie their spacing and orientation to each other, to a form-fitting engagement by on the hexagon 36 existing corners 44 . 45 . 46 . 47 and 48 are adjusted. The corner positions are coordinated in such a way that between the inner key profile 2 and hexagon 36 only a small gap, just allowing easy inclusion of the hexagon, remains in 14 (and 15 ) is shown enlarged. The location of the aforementioned corners 39 to 43 the key profile relative to the through opening 6 for connecting a torque wrench, a ratchet or the like is chosen such that there is between the center of rotation P _{1 of} the hexagon (first polygon) and the center of the through opening 6 the distance a results.

How 15 clarifies, are also the aforementioned corners 39 to 43 corners at transitions between profile edges 49 and 50 the key inner profile 2 provided, the - in the example shown adjacent - corners 51 and 52 an octagon 38 (second polygon) a screw is assigned to polydirectional torque transmission. While transferring torque to the hexagon 36 to 14 only in profile edges adjacent to the aforementioned corners are involved in 15 in addition to the profile edges in the key base 33 . 33 ' . 34 and 34 ' the corners 49 . 50 also those with the corners involved 49 . 50 not connected, at the distance of the width across flats parallel spaced profile edges 3 at. Because the profile edges 3 , how 14 shows, also on a torque transmission to the hexagon 36 are involved, they have a dual function. A comparison of the 14 and 15 further clarifies that the profile edges or corners assigned to the form fit with the first polygon (hexagon) and the profile edges or corners which are positionally assigned to the form fit with the second polygon (octagon) also positionally refer to the passage opening 6 as a connection for a torque wrench are coordinated so that regardless of the choice of the different first or second polygon (hexagon or octagon) there is the same distance a between the axis of rotation of the screw body or polygon through point P ₁ and the center P _{2 of} the through opening results. Regarding one of the (in 14 . 15 Torque wrench not shown or set torque is therefore possible because of the additional lever arm, which is independent of the choice of the polygon, and an independent and therefore simplified conversion is possible. Even if in one of them 14 and 15 modified embodiment without the projections 4 the opposite parallel profile edges 3 up to the outer edge contour 29 there is a key internal profile 2 before, in which at least four profile sides adapted to the length of a hexagon are configured in terms of wall, of which the opposite profile sides along the profile sides 3 . 3 ' straight through and the two remaining profile sides connecting them to the octagon 38 adapted recesses 53 and 54 which the profile corners 49 and 50 include, are trained. On the other hand, one of them would be 14 and 15 deviating design also possible in that the key inner profile 2 is closed all round. With regard to the axis of symmetry running through the center of rotation P ₁ 55 can, for example, an axisymmetric repetition of the base of the profile with the corners 40 . 41 . 42 . 49 and 50 be provided so that the hexagon in the key profile obtained 36 the octagon at all six corners 38 is held in a rotationally locking manner at four of eight corners. The parallel profile edges that determine the width across flats S. 3 are also available in this variant in their entire length for alternative torque transmission to a hexagon as well as to the octagon.

All disclosed features are (in themselves) essential to the invention. In the disclosure of the application is hereby also the disclosure content of the associated / attached priority documents (Copy of the pre-registration) fully included, too for the purpose of features of these documents in claims of this Registration included.

Claims (26)

Screwdriver ( 7 ), comprising at least one attachment tool ( 1 ) and at least one actuator ( 8th ) with the attachment tool ( 1 ) for torque transmission using a plug connection ( 9 ) can be detachably coupled, the plug connection ( 9 ) a projection ( 5 ) and a cross-section adapted to it ( 11 ), characterized in that the plug-in projection ( 5 ) a recess ( 12 ) which is part-ring-shaped, leaving one of the free ends of the plug-in projection ( 5 ) facing opening is enclosed with a free passage width (w), and that at the plug receptacle ( 11 ) in a sliding direction (Y) through the recess ( 12 ) relocatable slide lock ( 14 ) is provided, the sliding bolt being a holding member ( 15 ), the cross-section of which in the plug-in direction (X) is larger than the passage width (w), and a release member adjacent in the slide direction (Y) ( 16 ), whose cross-section in the plug-in direction (X) is less than or equal to the passage width (w). Screwdriver ( 7 ) according to claim 1 or in particular according thereto, characterized in that the plug-in projection ( 5 ) on the attachment tool ( 1 ) and the socket ( 11 ) on the actuator ( 8th ), especially on an extension element with a handle. Screwdriver ( 7 ) according to one or both of the preceding claims or in particular according thereto, characterized in that the sliding bolt ( 14 ) against the force of a spring element ( 22 ) is relocatable. Screwdriver ( 7 ) according to one or more of the preceding claims or in particular according thereto, characterized in that the attachment tool ( 1 ) is designed as an attachment wrench or attachment screwdriver, the screwing tool being in particular a multifunction tool with a plurality of interchangeable attachment tools ( 1 ), the shape of which is adapted to different screw bodies, such as nuts, shaft nuts, screws or the like. Screwdriver ( 7 ) according to one or more of the preceding claims or in particular according thereto, characterized in that the auxiliary wrench is designed as a half-open ring spanner. Screwdriver ( 7 ) according to one or more of the preceding claims or in particular according thereto, characterized in that the auxiliary wrench has a polygonal key inner profile ( 2 ) which has a plurality of corners at transitions between edges pointing in different profile directions, the edge and / or corner positions being adapted to a polydirectional form fit with at least two different polygonal profiles, the number of corners of a first and the number of corners of a second polygonal profile, to which an adjustment is given in each case, are not integer multiples or divisors of one another. Screwdriver ( 7 ) according to one or more of the preceding claims or in particular according thereto, characterized in that the attachment tool ( 1 ) is designed as an attachment wrench, having an internal key profile such as that of a control head or bottom bracket key and / or pedal key and / or locknut wrench and / or socket wrench for semi-oval nuts on bottom brackets. Screwdriver ( 7 ) according to one or more of the preceding claims or in particular according thereto, characterized in that the corner layers are connected to a polydirectional form fit with a hexagon ( 36 ) and with an octagon ( 38 ) have the same width across flats (S). Screwdriver ( 7 ) according to one or more of the preceding claims or in particular according thereto, characterized in that the attachment tool ( 1 ) for torque transmission by means of a profile pin ( 26 ) torque wrench ( 25 ), a ratchet or the like a through opening ( 6 ) with a cross-sectional profile that is form-fittingly adapted to the profile pin cross-section. Screwdriver ( 7 ) according to one or more of the preceding claims or in particular according thereto, characterized in that a plurality of attachment wrenches are matched to one another in such a way that the center distance (a) between a screw, nut, held in a form-fitting manner in an attachment wrench within a screw or turning plane , Shaft nut or the like on the one hand and the cross-sectional profile of the through opening adapted to the profile pin cross section ( 6 ) on the other hand is dimensioned uniformly. Screwdriver ( 7 ) according to one or more of the preceding claims or in particular according thereto, characterized in that the thickness (b) of the attachment tool ( 1 ) at least in the area of the through opening ( 6 ) a spring catch distance (k) of a spring from the profile pin ( 26 ) corresponding protruding locking element. Wrench tool, having a polygonal key inner profile ( 2 ), the key inner profile ( 2 ) a plurality of profile edges running in different profile directions ( 3 . 3 ' . 30 . 30 ' . 32 . 32 ' . 35 . 35 ' ) which are adapted for positive torque transmission to a first polygonal outer profile having a first number of edges, characterized in that the key inner profile ( 2 ) a plurality of profile edges running in different profile directions ( 3 . 3 ' . 33 . 33 ' . 34 . 34 ' ) has that for positive torque transmission to two tes, a polygonal outer profile having a second number of edges are adapted, the first and the second number of edges not being integral divisors or multiples of one another. Wrench tool according to claim 12 or in particular according thereto, characterized in that the key inner profile ( 2 ) a plurality of corners at transitions between edges ( 39 . 40 . 41 . 42 . 43 ), whose corner positions for positive torque transmission are adapted to the first Mahrkan outer profile, which has a first number of corners, that the key inner profile ( 2 ) a plurality of corners ( 49 . 50 ), the corner positions of which are adapted to a positive torque transmission to the second polygonal outer profile having a second number of corners, the first and second number of corners not being integral multiples or fractions of one another. Wrench tool according to one or both of claims 12 and 13 or in particular according thereto, characterized in that the edge and / or corner layers on a hexagon 36 and an octagon 38 are adjusted. Schraubschlüsselwerkzeug according to one or more of the preceding claims 12 to 14 or in particular after that, characterized in that the wrench tool as a half-open ring spanner is trained. Wrench tool according to one or more of claims 12 to 15 or in particular according thereto, characterized in that on the key inner profile ( 2 ) at least four in terms of length to a hexagon ( 36 ) adapted profile sides are configured in terms of walls, of which two opposite profile sides run straight through and the remaining profile sides connecting these two opposite profile sides with one another to an octagon ( 38 ) adapted recesses ( 53 . 54 ) are provided. Schraubschlüsselwerkzeug according to one or more of claims 12 to 16 or in particular thereafter, characterized in that the continuously trained Profile pages essentially parallel to the direction of the key mouth run. Wrench tool according to one or more of claims 12 to 17 or in particular according thereto, characterized in that the key inner profile ( 2 ) in one actuator ( 8th ) facing key profile area, or key profile base, and / or in the opposite key profile area, or key profile dome, three each to a hexagon ( 36 ) adapted corners ( 40 . 41 . 42 ) and two, each in between, on an octagon ( 38 ) adapted corners ( 49 . 50 ) having. Wrench tool according to one or more of claims 12 to 18 or in particular according thereto, characterized in that the wrench tool is designed as an auxiliary wrench which can be detachably transmitted with a push-on handle and / or a torque wrench for torque transmission ( 25 ) can be coupled. Attachment tool ( 1 ), especially an additional wrench or additional screwdriver, with a web-like plug-in projection ( 5 ), the plug-in projection ( 5 ) for torque transmission using an actuator ( 8th ), such as an extension element that forms a handle, in a plug-in receptacle that is form-fittingly adapted to the plug projection cross-section ( 11 ) of the actuator ( 8th ) is releasably mountable, characterized in that the attachment tool ( 1 ) for torque transmission using a profile pin ( 26 ) having an actuating element, such as a torque wrench or a ratchet, a through opening ( 6 ) which has an opening cross section which is adapted to the profile pin cross section in the torque plane in a form-fitting manner. Attachment tool ( 1 ) according to claim 20 or in particular according thereto, characterized in that the plug-in projection ( 5 ) a recess ( 12 ), which to the free end of the plug-in projection ( 5 ) is enclosed in a partial ring. Attachment tool ( 1 ) according to one or both of claims 20 and 21 or in particular according thereto, characterized in that the attachment tool ( 1 ) is plate-like, the plug-in projection ( 5 ) and the passage opening ( 6 ) extend within the same level. Attachment tool ( 1 ) according to one or more of the preceding claims 20 to 22 or in particular according thereto, characterized in that the attachment tool ( 1 ) is designed as an auxiliary wrench, having a polygonal key inner profile, the key inner profile ( 2 ) at the transitions between profile edges pointing in different profile directions, the profile edge and / or corner layers being adapted to a polydirectional form fit with at least two different polygonal profiles, the number of corners of a first and the number of corners of a second polygonal profile, to each of which an adaptation is given is not an integer multiple or divisor of each other. Attachment tool ( 1 ) according to one or more of the preceding claims 20 to 23 or in particular according thereto, characterized in that the plate-like attachment tool ( 1 ) has a uniform plate thickness (b) which is attached to a ball indexing distance (k) of the torque wrench ( 25 ) is adjusted. Attachment tool ( 1 ) according to one or more of the preceding claims 20 to 24 or in particular according thereto, characterized in that the attachment tool ( 1 ) is designed as a stamped part. Attachment tool ( 1 ) according to one or more of the preceding claims 20 to 25 or in particular according thereto, characterized in that the attachment tool ( 1 ) is designed as an attachment wrench, having an internal key profile such as that of a control head or bottom bracket key and / or pedal key and / or locknut wrench and / or socket wrench for semi-oval nuts on bottom brackets.