Driving tool

Abstract

The invention relates to a driving-in device, in particular in the form of a magazine screwdriver, comprising a fastener feed device for partially or fully automated reloading of the driving-in device with fasteners and comprising a driving-in tool, characterized by a centring attachment arranged in front of the driving-in tool in the driving-in direction and designed to receive a fastener, set-up in such a way that the respective fastener can be reloaded at least partially into the centering attachment by the fastener feed device and can be gripped there by the driving-in tool for subsequent driving in of the fastener.

Description

[0001] Driving tool

[0002] Description

[0003] Field of the invention

[0004] The invention relates to a driving tool, in particular a magazine screwdriver, as well as to a centering attachment for a driving tool

[0005] Background and general description of the invention

[0006] The technical field of fastening technology is in a constant state of development. Particularly portable devices, with which fastening elements can be driven into a structure, are available in a wide variety of versions on the market and are used in tough, continuous operation. Especially when large objects have to be fastened, or when the same type of fastening must always be made using the same fastening elements, such as constantly recurring screw connections, magazine screwdrivers have already proven themselves. These store a number of screws that are partially or fully automatically fed or reloaded and can be inserted precisely by the user. adunox GmbH is active, among other things, in the sales and further development of such magazine screwdrivers.

[0007] In the development of such driving tools, a significant focus is placed on reducing the working time required for setting the connections to a minimum. This means that the stock of screws or fasteners on the driving tool as well as the potential error rate when driving the fasteners are subject to constant monitoring and review for potential further development. This description also deals with reducing the working time required for driving a fastener, as well as with reducing sources of error and reducing the potential error rate in order to provide the user with an even more satisfactory result.

[0008] Furthermore, it has been shown that fasteners of different lengths, for example screws of 20 mm in length on the one hand and screws of 60, 80 or even 150 mm in length on the other hand, should be used in series if necessary. Especially for long fasteners, no satisfactory product is available on the market.

[0009] An object of the present invention can therefore be seen in providing an improved device for driving fasteners into a workpiece or a surface. In a partial aspect of the present description, the aforementioned problems and challenges are solved or improvements are provided.

[0010] The aim is to further reduce the working time for the user by applying the present invention and / or to reduce the error rate, i.e. the incorrect setting of a fastener and / or the occurrence of a malfunction of the driving tool.

[0011] Another aspect of the task is to reach hard-to-reach or narrow places with a fastener such as a screw in such a way that it can be easily inserted with a driving tool

[0012] The object of the invention is solved by the subject matter of the independent patent claims. Dependent claims form further developments

[0013] A driving tool according to the present description is designed, for example, as a magazine screwdriver, as it is manufactured in numerous variants by adunox. Such a driving tool has a fastener feed device. This feed device ensures, on the one hand, the storage of fasteners and, on the other hand, a partially or fully automated reloading of the driving tool with the fasteners. Furthermore, the driving tool has a driving tool, e.g. a screwdriver bit arranged or arrangeable in the device, which can be inserted into corresponding receptacles on fastener heads. A prominent example of this is a Torx or Philips screwdriver.

[0014] The driving tool has an attachment arranged in front of the driving tool in the driving direction and designed to receive a fastener. Such an attachment is described below as a centering attachment. A centering attachment is a type of tip on the front of the driving tool into which a fastener can be inserted. The fastener is then partially reloaded into the centering attachment by the fastener feed device. This process can be carried out partially or fully automatically, so that the fastener feed device automatically positions a fastener, such as a screw, in the centering attachment when the driving tool is operated. When the fastener is loaded into the centering attachment,it can be gripped there by the driving tool for subsequent driving in of the fastener. For this purpose, for example, the screwdriver bit is moved in the direction of the centering tip so that it reaches the fastener head and can engage in the corresponding receptacle. Subsequently, by further pressing the driving tool in the direction of driving, the fastener is released from the fastener feed device (e.g. pressed out of the magazine belt) and guided through the centering attachment. The driving tool is accordingly preferably a screwing tool, prepared for the rotating driving of the screwing means into a workpiece or a surface,

[0015] The centering attachment can be designed to hold the fastening means, so that the centering attachment is a holding attachment or a centering and holding attachment. Alternatively or cumulatively, the centering attachment can provide a held or guided driving position for one of the fastening means. In other words, the centering attachment is designed such that a screw arranged at least partially in the centering attachment is held or guided by the centering attachment. For example, the fastening means can be clamped in the centering attachment. For example, the clamping can be designed such that at least one thread groove (thread pitch) of the fastening means engages in a clamping jaw,so that the screw is held securely in the clamping jaw. The centering attachment can therefore provide a held or guided driving position for the fastener. The screw or fastener remains in such a driving position regardless of how the driving tool is held (with the tip facing down or up) or even in the event that the driving tool experiences a shock (e.g. due to an impact). The presence of threads makes it easier for the clamping jaw to hold the fastener securely, as these create a higher resistance to any movement in the longitudinal direction than a smooth surface. For even stronger fixation, it is possible for the fastener to engage in corresponding grooves or locking lugs provided on the clamping jaw.

[0016] The centering attachment can be designed in one piece or in one piece with the driving tool. In a preferred embodiment, the driving tool can have a centering attachment holder for holding the centering attachment on the driving tool. The centering attachment holder can be adjustable, e.g. longitudinally adjustable, so that the centering attachment can also be mounted on different driving tools and / or can be mounted on the driving tool at an adjustable distance from the driving tool.

[0017] The present description also includes a centering attachment for a driving tool, for example as described above, wherein the centering attachment is designed to be arranged in front of a driving tool in the driving direction and further to receive a fastening means, such that the respective fastening means can be at least partially reloaded into the centering attachment by a fastening means feed device of the driving tool and can be grasped there by the driving tool for the subsequent driving of the fastening means.

[0018] In a further development, the centering attachment has at least one holding jaw for holding the fastening means loaded into the centering attachment. Such a holding jaw can be adjustable in order to be able to accommodate different screw diameters and / or to be able to react to slight changes in the position of the fastening means in the centering tip by means of position offset or position correction.

[0019] In a preferred embodiment, the at least one holding jaw can have a pre-spreader The pre-spreader can be designed to pre-spread the holding jaw when a pressure force is applied to the pre-spreader by the inserted fastening means This can ensure that, for example, a screw fastening means which has threads on the outer circumference of the fastening means can engage in the holding jaw without the fastening means jamming in or on the holding jaw If the holding jaw has a profile, the fastening means with threads can be held particularly well in the holding jaw However, inserting a screw into a profiled holding jaw can be made significantly more difficult or even impossible if a thread engages with a profile The pre-spreader has also proven advantageous for this purpose The centering attachment can alternatively or cumulatively also have a second,have a holding jaw arranged opposite the first holding jaw,

[0020] The pre-spreader can be formed in part in the first holding jaw and the second holding jaw, so that the pre-spreader is formed by both holding jaws, which either lie on top of each other or clamp the fastening means. The pre-spreader can also be designed in such a way, for example with a screw head receptacle, that the fastening means can be clamped or pushed in between the clamping jaws and the fastening means comes to rest in a defined manner on the screw head receptacle. This ensures that each fastening means is in the same rest position in the centering attachment before it is driven in. The screwing processes can then be carried out very ergonomically and in a similar manner, since the exact screw position in the centering attachment is known to the user in advance and he can remember the process, as well as the arm position, the necessary hand force, etc.can be optimized accordingly This saves valuable seconds each time the driving tool is positioned at the screw position at which the fastener is to be driven The holding jaw or the holding jaws can further comprise a reset device The reset device can be designed such that the holding jaws rest in a clamping position in which the holding jaws press against each other The reset device comprises, for example, a spring bearing for providing a clamping force, and further preferably for clamping a fastener by means of the clamping force between the holding jaws,

[0021] The centering attachment preferably has a loading side for loading one of the fastening means into the centering attachment. The loading side is typically arranged on one side of the centering attachment. Opposite the loading side, the centering attachment can also have a fastening means stop. The fastening means stop is, for example, designed in such a way that a fastening means inserted into the centering tip strikes the fastening means stop when inserted into the received position in the centering attachment, and thus cannot exit the centering tip on the opposite side of the centering tip.

[0022] The first holding jaw can be arranged on the loading side. The second holding jaw can be arranged on the side opposite the loading side, the stop side.

[0023] The first holding jaw can have a loading cutout for loading the fastener through the loading cutout of the holding jaw into the centering attachment. The second holding jaw can also have a loading cutout. This makes it possible to load a fastener into the centering attachment through the loading cutout of the first holding jaw and, if desired, to eject a fastener from the centering attachment through the loading cutout of the second holding jaw. For example, this can be advantageous if a fastener jam has occurred in the centering attachment, for example two or more fasteners are located in the centering attachment at the same time, or if the fasteners are to be changed, for example a different length or a different diameter is to be selected. The two holding jaws are particularly preferably constructed identically or symmetrically to one another.so that they are interchangeable. This means that only one form for the holding jaws has to be provided, which may reduce production costs,

[0024] The first holding jaw can comprise a return device arranged on each side of the loading cutout. For example, the holding jaw can be U-shaped in a plan view, with a spring element being arranged under each of the two legs and the free space between the legs being taken up by the loading cutout. A fastening element can thus be loaded between the two support legs of the holding jaw. This design enables, on the one hand, a more precise positioning of the clamping jaw, in particular on the screw fastening means, and, on the other hand, a shorter design of the centering attachment can be achieved.

[0025] The centering attachment can comprise an elongated centering attachment housing body. The housing body can have one or more of the following features: The centering attachment housing body can have holding jaw penetrations for the holding jaws to reach through the housing body from the outside. If the holding jaws are arranged outside the housing body, the housing body can be of comparatively compact construction and, at the same time, the holding jaws can be fixed to the housing body from the outside. This arrangement also enables a particularly high clamping force on the fastening means by the holding jaws. The housing body can in any case have a lateral loading slot with a loading slot length L, which is suitable for loading the fastening means(s) into the centering attachment. Alternatively or cumulatively, the housing body can have a stop slot, in particular arranged opposite the loading slot, with a stop slot length A.wherein the stop slot length is smaller than the loading slot length. Furthermore, the housing body can have a screw head centering aid on one side of the driving tool,

[0026] The stop slot length A can be designed in relation to the loading slot length L so that a fastener can be loaded into the centering attachment through the loading slot and abuts against the stop slot In other words, the stop slot is designed so that when the centering attachment is reloaded with a fastener, the fastener comes to rest in the centering attachment without there being a risk that the fastener protrudes on the stop side opposite the loading side The stop slot thus forms a barrier for the fastener, against which the fastener can strike and protrudes with its tip into the centering attachment If a tensile force is now applied to a magazine band holding the fastener, the fastener can be unloaded from the centering attachment through the stop slot Since it cannot be completely ruled out,that incorrect operation or incorrect insertion of a fastener occurs, it is conceivable that a fastener buildup will occur in the centering attachment In this case, it is advantageous if the fasteners can be easily unloaded from the centering attachment using the stop slot If, for example, the stop slot were not present and the housing were closed there, then excess or faulty fasteners could not be removed on the side opposite the loading side If, ​​however, the stop slot were too large, then the fasteners might not come to rest centered in the centering attachment, but might protrude with their tips from the centering attachment, making it impossible to insert the fastener cleanly using the driving tool A magazine belt on which the fasteners are stored can be prepared in such a way thatto ensure that the fastening element tilts in the centering attachment so that when the magazine band on the stop side is pulled, the fastening element swings out of the neutral position and can be pulled through the stop slot,

[0027] The stop slot length A can be designed in relation to the loading slot length L to A / L < 0.95, preferably < 0.85 and more preferably < 0.75 Alternatively or cumulatively, the stop slot length A can be designed in relation to the loading slot length L to A / L > 0.6, preferably > 0.7 and more preferably > 0.8

[0028] A centering attachment can also have a guide tip, for example, designed as part of the centering attachment housing body. Such a guide tip can be designed in such a way that it can be fitted into recesses on the object to be fastened using the key-lock principle, so that incorrect assembly or assembly in the wrong place can be excluded. Such a guide tip is therefore particularly advantageous when work has to be carried out very quickly, but at the same time a very high precision of the fastening positions has to be ensured.

[0029] The present description also includes a driving tool with such a centering attachment as described in the above statements

[0030] In a further development, the fastener feed device can be designed to provide a fastener in a ready position on a driving side of the driving tool. In other words, the fastener feed device automatically feeds the fasteners so that after driving in a fastener, another fastener is provided on the driving side of the driving tool. For this purpose, a ready position is particularly preferably provided, in which the fastener is held in such a way that it does not leave the ready position during operation or only leaveswhen it is moved by the driving tool in the driving direction. Furthermore, it can comprise an elongated driving tool body and a driving tool arranged in the driving tool body. The driving tool can be removable from the driving tool body. Furthermore, it can comprise a first compression module for providing a first compression path for the driving tool in the driving direction and a second compression module for providing a second compression path for the driving tool in the driving direction, wherein the two compression paths add up to a total compression in the driving direction,

[0031] With the first compression section, in particular the driving tool can be adjusted to the fastening means With the second compression section, the fastening means can be driven in particular into a workpiece or a surface In other words, the first compression section causes a linear displacement of the front part of the driving tool in relation to the driving tool drive, and the second compression section also causes a linear displacement of the front part of the driving tool in relation to the driving tool drive The driving tool is thereby compressed in the driving direction if necessary The driving tool can emerge from the driving tool in the driving direction or protrude If necessary, it is designed in such a way that the total length from a tool holder in a driving tool drive to the fastening means to be inserted remains unchanged,and due to the compression of the driving tool, the fastener on the driving side is ejected from the driving tool or moves further away from the first and / or second compression module,

[0032] To compress the first compression section, a first compression force is required, to compress the second compression section, a second compression force is required. The second compression force is particularly preferably greater than the first compression force, so that a two-stage compression section is provided. In other words, it is preferred if the first compression section is compressed first,and only when the first compression section is compressed is the second compression section compressed With the first stage of compression, the partially or fully automated fastener feed device can be activated and the driving tool can be placed on the fastener Only when this is completed is the second compression module activated and a further shortening of the driving tool and / or increase in the distance between the fastener to be driven and the first or second compression module is triggered With the further shortening or compression of the second compression section, the fastener is preferably driven into a workpiece or surface,

[0033] The compression of the first compression section can therefore preferably automatically prepare the fastener feed device for the subsequent reloading process. Alternatively or cumulatively, the relaxation of the first compression section can automatically reload the driving tool with a fastener from the fastener feed device. The second compression module preferably provides a tool holder for the fastener tool. Alternatively or cumulatively, the second compression module comprises a sliding sleeve, wherein in particular the tool holder is encompassed by the sliding sleeve.

[0034] The second compression module can accommodate a compression or restoring element. Such a compression or restoring element can in particular be a spring element. Alternatively or cumulatively, the compression or restoring element is adaptable with regard to the applied restoring force. Alternatively or cumulatively, the compression or restoring element is accommodated in a housing sleeve.

[0035] Preferably, a driving axis is formed from a driving tool drive to the loaded fastening means, wherein the driving axis passes through the first and second compression module. Alternatively or cumulatively, the driving tool drive, the first compression module, the second compression module and optionally also the loaded fastening means are arranged next to one another in such a way that the driving axis intersects all components or passes through all components. For example, the driving axis intersects the aforementioned components centrally or along the force transmission axis.

[0036] The fastening means are in particular screw means. Alternatively or cumulatively, the driving tool is a screw tool. Alternatively or cumulatively, the centering attachment is designed to hold the fastening means, so that the centering attachment is a holding attachment or a centering and holding attachment. Alternatively or cumulatively, the centering attachment provides a held or guided driving position for one of the fastening means.

[0037] Furthermore, the driving device can be provided with a centering attachment arranged in front of the driving tool in the driving direction and designed to receive the fastening means. The centering attachment can be designed in such a way that the respective fastening means can be at least partially reloaded into the centering attachment by the fastening means feed device and can be grasped there by the driving tool for the subsequent driving of the fastening means. The driving device can further comprise a centering attachment holder, in particular one which is longitudinally adjustable, for receiving the centering attachment on the driving device.

[0038] The second compression module can have a compression module coupling, with which the second compression module can be coupled to the first compression module. Alternatively or cumulatively, the second compression module can comprise a tool extension in order to couple a drive receptacle to the driving tool. Alternatively or cumulatively, the second compression module can be designed as a clamping element for clamping the second compression module to the driving tool drive.

[0039] The second compression module can have a linear guide Alternatively or cumulatively, the sliding sleeve can be guided along a linear guide in the compression module Alternatively or cumulatively, the sliding sleeve can have a guide pin for engaging in such a linear guide The second compression module can further comprise a driving tool drive receptacle for directly coupling the driving tool drive to the second compression module

[0040] In a further development, the driving tool can have an attachment arranged in the driving direction in front of the driving tool and designed to receive a fastening means, as described above

[0041] In the following, the invention is described in more detail using exemplary embodiments and with reference to the figures, wherein identical and similar elements are partly provided with the same reference numerals and the features of the various exemplary embodiments can be combined with one another.

[0042] Short description of the characters

[0043] It shows:

[0044] Fig 1 Side sectional view of a driving tool with centering attachment,

[0045] Fig 2 Side view of an embodiment of a centering attachment,

[0046] Fig 3 further side view of an embodiment of a centering attachment,

[0047] Fig 4 is another side view of an embodiment of a centering attachment,

[0048] Fig 5 perspective view of an embodiment of a centering attachment,

[0049] Fig 6 Front view of an embodiment of a centering attachment,

[0050] Fig 7 Exploded view of an embodiment of a centering attachment,

[0051] Fig. 8 Side view of an embodiment of a driving tool with centering attachment, Fig. 9 Partial side sectional view of an embodiment of a driving tool with centering attachment

[0052] Fig 10 partial side sectional view of an embodiment of a driving tool without centering attachment,

[0053] Fig 11 Side view of a second compression module,

[0054] Fig 12 Sectional view of a second compression module,

[0055] Fig 13 Front view of a second compression module,

[0056] Fig 14 perspective view of a second compression module

[0057] Detailed description of the invention

[0058] Fig. 1 shows a partially sectional side view of a centering attachment 10, with at least partially inserted screw 100, wherein the screw 100' is connected with its screw head 104 to the magazine belt 102. The centering attachment 10 has two holding jaws 12, 22, which are designed to hold a fastening means 100 in a front area of ​​the centering attachment 10. In order to apply a clamping force of the holding jaws 12, 22 to a fastening means 100', a rocker bearing 14, 24 is provided, as well as a return device 32, 34 providing the pre-tensioning force. The legs 16, 17, 27, 28, designed as a handle in this embodiment, can be operated, for example, by a hand or by the fingers of a hand. This allows, for example, a 12, 22 held screw 100' can be easily removed by releasing the holding jaws 12, 22 from the screw 100' when the legs 16, 17, 27,28 are pressed against the housing 40 and thus, aided by the rocker bearing 14, 24, the jaw supports 13, 23 of the holding jaws 12, 22 are loosened or removed from the held screw 100',

[0059] The centering attachment 10 has a guide tip 49 on the front, which is designed to guide the centering attachment 10. For example, the component 60 to be mounted can be designed in such a way that a counter-guide 62 is present at the location of the fastening to be attached, into which the guide tip 49 is inserted. For example, it may be necessary to screw on a metal angle which has pre-drilled holes. This makes it considerably easier to find the right place to attach the fastening with the centering attachment 10. In the case of the metal angle, the guide tip 49 can be inserted into the pre-drilled hole in the metal angle and the screw can be placed perfectly centrally. Instead of the metal angle, any other component, even one made of a different material, can of course also be mounted.

[0060] The centering attachment 10 has the centering attachment housing body 40, which at least partially encloses an inserted fastening means 100' and serves as an abutment for receiving the holding jaws 12, 22. When the fastening means 100' is freshly reloaded through the loading slot 42 into the centering attachment 10, it may only protrude into the centering attachment 10 with its tip, as also illustrated in Fig. 1, where a fastening means 100' extends into the centering attachment 10 by approximately half of its length. During operation, the fastening means 100' is then driven completely into and / or through the centering attachment 10 by the driving tool 82.

[0061] On the loading side 43, the centering attachment 10 has the loading slot 42 through which the screwing means 100, 100' can be loaded into the centering attachment 10. On the side opposite the loading side 43, a slot is also provided, namely a stop slot 44. The stop slot 44 is shorter than the loading slot 42. When a fastening means 100' is reloaded into the centering attachment 10, it can strike the stop 45 and thereby be aligned in the direction of the driving direction in the centering attachment. In other words, the stop 45 ensures that, for example, the tip or the front part of the fastening means 100, 100' cannot escape from the centering attachment 10, but rather remains in the centering attachment housing body 40 and thus the alignment along the driving direction in the direction of the holding jaws 12, 22 is maintained. During operation, so the screw 100', which is inserted into the centering attachment 10,be gripped by the driving tool 82 and pushed further into the centering attachment 10. In doing so, the fastening means 100' is released from the magazine belt 102 and can, for example, also initially strike and / or come to rest on the screw head centering aid 48. The screw head centering aid 48 is, for example, designed to be round and closed, so that any possible lateral deflection of the fastening means 100' from the driving direction can be absorbed by the screw head centering aid 48. As soon as the fastening means 100' is aligned centrally, the screw head 104 can also penetrate into the centering attachment housing body 40 and the screw can be moved further in the direction of the holding jaws 12, 14 or the driving direction by applying a pressure force to the driving tool 82. The fastening means is pushed against the holding jaws 12, 22 in this way.

[0062] In an awkward or unfavorable case, it can rarely lead to the fastening means 100' getting caught on the holding jaws 12, 22 or to the holding jaws not being able to open. It has proven advantageous if the holding jaws have a pre-spreader 15. On the way in the direction of the driving-in direction, the fastening means 100' will then first hit the pre-spreader 15 and drive the holding jaws 12, 22 out of their rest position by means of pressure on the pre-spreader 15. As the fastening means 100' moves further in the direction of the driving-in direction, it is then clamped between the clamping jaws 12, 22. A clamping position 25 is thus reached. In the clamping position 25, a fastening means 100, 100' is clamped between the holding jaws 12, 22 and held there. If the secure attachment of the fastening means 100' at the desired mounting position on the workpiece 60 appears to be ensured,Further pressure can be exerted on the driving tool 82 and at the same time a rotary movement or a rotary feed can be exerted on the fastener 100' in order to drive the fastener into the workpiece 60. After the fastener 100' has been driven into the workpiece 60, the driving tool 82 can be retracted back into its rest position. The retraction process activates the fastener feed device 90 for reloading with the next screw or fastener 100, 100'.

[0063] Referring now to Fig. 2, a centering attachment 10 is shown in a top view. The centering attachment 10 can be fastened to the driving tool body 80 using the centering attachment holder 4. In the illustration shown in Fig. 2, the loading side 43 is visible to the front in the image plane, so that the offset between the loading slot length L and stop slot length A becomes clear. A screw 100 loaded into the image plane from above can pass through the recess of the loading slot 42 and would strike with its tip against the stop 45, so that the tip of the fastening means 100 is reliably prevented from accidentally emerging from the centering attachment 10. The centering attachment holder 4 shown in Fig.The holding jaw 12 shown in Fig. 2 has two legs 16, 17, under each of which a preload spring 32 is arranged. Between the two legs 16, 17, a loading cutout 18 is arranged so that a screw 100 to be loaded can be easily loaded between the legs 16, 17 and into the centering device 10.

[0064] Fig. 3 shows a further side view of a centering attachment 10. The arrangement of the preload springs 32, 34 below the legs 16, 28 is particularly clear in this illustration. The holding jaws 12, 22 are mounted in bearings 14, 24 on the housing body 40, so that by applying pressure to the legs 16, 17, 27, 28, the holding jaws 12, 22 can be actuated and thus a possible release of a screw received in the centering attachment 10 can also take place. A screw 100 held by the holding jaws 12, 22 can thus be easily removed from the centering attachment 10, for example in the event of a malfunction or when the screw material needs to be changed. Referring to Fig. 4, a further side view of a centering attachment 10 is shown, wherein the arrangement of the second holding jaw 22 on the housing body 40 is particularly clear.

[0065] In all embodiments shown, the same reference numerals also represent the same features, so that the features of the embodiments shown in the individual figures can be combined with each other and the feature described for one figure also applies to another figure, unless otherwise highlighted.

[0066] Fig. 5 shows a perspective view of a centering attachment 10. The centering attachment 10 can be fastened to the driving tool body 80 by means of mounting openings 5, 5a arranged on the centering attachment holder 4. A screw can be loaded through the loading cutout 29, which is arranged between the legs 27, 28. Fig. 6 shows a front view of a centering attachment 10, wherein the clamping position 25 is clarified in a centered and held form.

[0067] Fig. 7 shows an exploded view of a centering attachment 10. This shows how the spring elements 34, which serve as pre-tensioning springs, as well as how the pre-tensioning springs 32 each dip into a spring receptacle 33 and rest opposite each other on the centering attachment housing body 40 in a spring plate. The holding jaws 12, 22 each have a pre-spreader 15, which together provide a pre-spreading function in cooperation with the inserted screw 100 on the holding jaws 12, 22.

[0068] Fig. 8 shows an overall view of a driving tool 2, wherein the centering attachment 10 is mounted on the driving tool body 80 by means of the centering attachment holder 4. A plurality of mounting means 100 is provided by means of the fastener feed device 90. A fastener 100 can be inserted or reloaded into the centering attachment 10 and driven into a workpiece 60 by means of the driving tool 2. Once the mounting means 100 has been driven into the workpiece 60, the driving tool 2 is automatically reloaded with a mounting means 100 by means of the fastener feed device 90.

[0069] As shown in Fig. 8, the driving tool 2 comprises a driving tool drive 75, a first compression module 83, a second compression module 84 and the centering attachment 10. The aforementioned modules are arranged linearly next to one another. The driving axis 58 cuts through the driving tool drive 75, the first compression element 83, the second compression element 84, the centering attachment 10 and the fastening means 100' inserted into the centering attachment 10. The driving axis 58 thus forms a force line, so to speak, which passes through the aforementioned device components and which extends from the driving tool drive 75 as the force-generating component to the fastening means 100'.

[0070] The first compression module 83 and the second compression module 84 are arranged directly next to one another. The second compression module 84 engages with the sliding sleeve 85 at least partially into the first compression module 83. As can also be seen in Fig. 8, the second compression module 84 has a linear guide 86, so that the guide pin 87 arranged on the sliding sleeve 85 is designed to be displaceable in the linear guide 86. This can in particular provide an anti-twist device for the sliding sleeve 85, and thus for the driving tool 2 as a whole. For example, the length of the linear path available for the guide pin 87 in the linear guide 86 can correspond to the length of the compression section K2. Furthermore, the second compression module 84 has a clamping lever 78, by means of which the second compression module 84 can be fastened to the driving tool drive 75.

[0071] The first compression module 83 is also designed to be compressible and can be compressed by the compression length K1. When the first compression module 83 is compressed by the compression distance K1, the fastener feed device 90 is prepared to reload a further fastener 100. The force required to compress the respective compression module 83, 84 preferably differs between the two modules. The force required to compress the first compression module 83 is preferably smaller than the force required for the second compression module 84. This means that the first compression module 83 is always activated first, and only when the first compression module 83 is sufficiently activated (compressed) does the second compression module 84 begin to be activated. With the activation of the second compression module 84, the screw length is further shortened,until the maximum shortening in the path length K1+K2 is finally reached,

[0072] Referring to Fig. 9, a sectional view of the driving device 2 is shown, wherein the driving tool 82 is also visible, which is arranged inside and which can be used to drive a fastener 100 through the centering attachment 10 and into a workpiece 60. For this purpose, the driving device 2 has compression elements which provide a compression stroke and thus position the driving tool 82 in the direction of the fastening element 100.

[0073] Further referring to Fig. 10, a further embodiment of the driving tool 2 is shown, which is provided without a front-side centering attachment 10. In this embodiment, too, the fastening means feed device 90 is first prepared for reloading by compressing the first compression module 83, and only then is the second compression module 84 activated in order to provide an even larger adjustment range for the driving tool 2. This allows, for example, particularly hard-to-reach places to be reached with the automated driving tool 2.

[0074] Referring now to Fig. 11, a second compression module 84 is shown separately from the first compression module 83 and the driving tool drive 75. In this illustration, the compression module coupling 85A is visible, which in this embodiment comprises a locking groove 85B. The first compression module 83 can be coupled to the second compression module 84 by means of the compression module coupling 85A. In the embodiment shown in Fig. 11, a compression or return element 88 is also provided inside the housing sleeve 89. For example, in this embodiment, it is designed as a screw element 88. At the drive-side end of the second compression module 84, a driving tool drive receptacle 76 is provided.

[0075] Fig. 12 shows a second compression module 84 in a sectional view. The second compression module can be coupled to the driving tool drive 75 by means of the driving tool drive receptacle 76. The driving tool 82 can then be driven via the tool receptacle 81 by means of the tool extension 73. In this embodiment, the distance between the driving tool drive receptacle 76 and the tool receptacle 81 is unchangeable. When the length of the second compression module 84 changes, the tool extension 73 is therefore moved further in the driving direction 58 when the driving tool 2 is brought to bear on the fastening means 100'.so that the total length of the driving tool 2 is shortened. The driving tool 82 then protrudes from the driving tool 2 in the driving direction 56. In other words, the driving tool 2 in the compressed state is shorter than the length of the driving tool 82 extended by means of the tool extension 73. In the embodiment shown, two linear guides 86 are provided on each side of the housing sleeve 89. Accordingly, the sliding sleeve 85 has two guide pins 87, wherein a guide pin 87 engages in each linear guide 86,

[0076] Referring to Fig. 13, a view of the front of the second compression module 84 is shown, wherein the tool extension 73 and the compression module coupling 85A are visible. Finally, referring to Fig. 14, a perspective view of the second compression module 84 is shown, wherein the compression module coupling 85A with locking groove 85B is again visible. A compression or return element 88 is accommodated in the housing sleeve 89.

[0077] It will be apparent to the person skilled in the art that the embodiments described above are to be understood as examples and that the invention is not limited to them, but can be varied in many ways without departing from the scope of the claims. Furthermore, it is clear that the features, regardless of whether they are disclosed in the description, the claims, the figures or otherwise, also individually define essential components of the invention, even if they are described together with other features. In all figures, the same reference numerals represent the same objects, so that descriptions of objects that may only be mentioned in one or at least not with regard to all figures, can also be transferred to these figures and embodiments with regard to which the object is not explicitly described in the description.

[0078] List of reference symbols

[0079] 2 tacker

[0080] 4 Centering attachment holder

[0081] 5.5A mounting opening

[0082] 10 Centering attachment

[0083] 12 first holding jaw

[0084] 13 Cheek rest

[0085] 14 camps

[0086] 15 pre-spreaders

[0087] 16 legs

[0088] 17 legs

[0089] 18 Loading cutout

[0090] 22 second holding jaw

[0091] 23 Cheek rest

[0092] 24 warehouses

[0093] 25 clamping position

[0094] 27 legs

[0095] 28 legs

[0096] 29 Loading cutout

[0097] 32 preload spring

[0098] 33 Spring retainer

[0099] 34 Preload spring

[0100] 35 spring plates

[0101] 40 Centering attachment housing body

[0102] 42 Charging slot

[0103] 43 Loading page

[0104] 44 Stop slot

[0105] 45 stop

[0106] 48 Screw head centering aid

[0107] 49 top management

[0108] 52 Holding jaw penetration

[0109] 56 Driving direction

[0110] 58 Drive axle

[0111] 60 workpiece

[0112] 62 Counter-guidance

[0113] 73 Tool extension

[0114] 75 tacker drive

[0115] 76 Tacker drive holder

[0116] 78 clamping lever

[0117] 80 tacker bodies

[0118] 81 Tool holder

[0119] 82 Driving tool

[0120] 82A tool tip

[0121] 83 first compression element

[0122] 84 second compression element 85 sliding sleeve

[0123] 85A compression module coupling

[0124] 85B Arretiemut

[0125] 86 Linear guide 87 Guide pin

[0126] 88 Compression or return element

[0127] 89 Housing sleeve

[0128] 90 Fastener feed device

[0129] 100 Fasteners 102 Magazine belt

[0130] 104 screw head

[0131] 106 threads

Claims

Patent claims 1 driving tool (2), in particular a magazine screwdriver, with a fastener feed device (90) for partially or fully automated reloading of the driving tool with fasteners (100, 100') and with a driving tool (82), characterized by a centering attachment (10) arranged in front of the driving tool in the driving direction and designed to receive a fastener, arranged in such a way that the respective fastener can be at least partially reloaded into the centering attachment by the fastener feed device and can be grasped there by the driving tool for subsequent driving of the fastener 2 Driving tool (2) according to the preceding claim, wherein the fastening means (100, 100') are screwing means, and / or wherein the driving tool (82) is a screwing tool, and / or wherein the centering attachment (10) is designed to hold the fastening means, so that the centering attachment is a holding attachment, and / or wherein the centering attachment provides a held or guided driving position for one of the fastening means 3 Driving tool (2) according to one of the preceding claims, further comprising a centering attachment holder (4) which is in particular longitudinally adjustable for receiving the centering attachment (10) on the driving tool 4 Centering attachment (10) for a driving tool (2), in particular according to one of the preceding claims, wherein the centering attachment is arranged to be arranged in front of a driving tool (82) in the driving direction and is further designed to receive a fastening means (100, 100'), such that the respective fastening means can be at least partially reloaded into the centering attachment by a fastening means feed device (90) of the driving tool and can be grasped there by the driving tool for the subsequent driving in of the fastening means 5 Centering attachment (10) according to one of the preceding claims, the centering attachment comprising at least one holding jaw (12, 22) for holding the fastening means (100, 100') loaded into the centering attachment 6 Centering attachment (10) according to the preceding claim, wherein the at least one holding jaw (12, 22) has a pre-spreader (15) which is designed to pre-spread the holding jaw when a pressing force exerted by the inserted fastening means (100, 100') on the pre-spreader is applied, so that the fastening means can engage in the holding jaw, and / or the centering attachment further comprises a second holding jaw opposite the first holding jaw 7 Centering attachment (10) according to one of the two preceding claims, the holding jaw(s) (12, 22) further comprising a return device (32, 34), in particular a spring bearing, for providing a clamping force, in particular for clamping a fastening means (100, 100') by means of the clamping force between the holding jaws 8 Centering attachment (10) according to one of the preceding claims, the centering attachment having a loading side (43) for loading one of the fastening means (100, 100') into the centering attachment, and / or wherein the centering attachment has a fastening means stop (45) arranged opposite a loading side (43) Centering attachment (10) according to one of claims 5 to 8, wherein the first holding jaw (12) is arranged on the loading side (43) and wherein the second holding jaw (22) is arranged on the stop side opposite the loading side, and / or the first holding jaw further comprises a loading cutout (18) for loading the fastening means (100, 100') through the loading cutout into the centering attachment, and / or wherein the second holding jaw has a loading cutout (29). Centering attachment (10) according to one of claims 5 to 9, the first holding jaw (12) comprising a return device (32, 34) arranged on each side of the loading cutout (18), in particular with a spring element, for applying the clamping force of the holding jaw. Centering attachment (10) according to one of the preceding claims, the centering attachment comprising an elongated centering attachment housing body (40),wherein the centering attachment housing body comprises at least one of the following features: holding jaw penetrations (52) for the holding jaws to reach through from the outside through the centering attachment housing body (40), and / or a lateral loading slot (42) with a loading slot length L, which is suitable for loading the fastening means (100, 100') into the centering attachment, and / or a stop slot (44), arranged in particular opposite the loading slot (42), with a stop slot length A, wherein the stop slot length is smaller than the loading slot length, and / or a screw head centering aid (48) arranged on a driving tool side. Centering attachment (10) according to the preceding claim, wherein the stop slot length A is designed in relation to the loading slot length L such that a fastening means (100, 100') can be loaded into the centering attachment through the loading slot (42), but on stop slot (44),and by applying a tensile force to a magazine band (102) holding the fastening means (100, 100'), it can be unloaded from the centering attachment through the stop slot, and / or wherein the magazine band (102) is designed to ensure tilting of the fastening means (100, 100') in the centering attachment, so that when the magazine band is pulled, the fastening means pivots out of the neutral position and can be pulled through the stop slot. Centering attachment (10) according to the preceding claim, wherein the stop slot length A in relation to the loading slot length L is designed to be A / L less than or equal to 0.95, preferably less than or equal to 0.85, more preferably less than or equal to 0.75, and / or wherein the stop slot length A in relation to the loading slot length L is designed to be A / L greater than or equal to 0.6, preferably greater than or equal to 0.7, more preferably greater than or equal to 0.

8. Centering attachment (10) according to one of the preceding claims,further comprising a guide tip (49), in particular designed as part of the centering attachment housing body (40) Driving tool (2) with a centering attachment (10) according to one of the preceding claims 4 to 14 Driving tool (2), in particular a magazine screwdriver, with a fastener feed device (90) for partially or fully automated reloading of the driving tool with fasteners (100, 100'), wherein the fastener feed device is designed to provide a fastener in a ready position on a driving side of the driving tool, and further comprising, an elongated driving tool body (80), a driving tool (82) arranged in the driving tool body, a first compression module (83) for providing a first compression distance (K1) for the driving tool in the driving direction (56), a second compression module (84) for providing a second compression distance (K2) for the driving tool in the driving direction, wherein the compression distances add up to a total compression in the driving direction 17 Driving tool (2) according to the preceding claim, wherein the driving tool (82) can be adjusted to the fastening means (100') with the first compression section (K1), and / or wherein the fastening means (100') [B: into a workpiece or a surface] can be driven with the second compression section (K2) 18 Driving tool (2) according to one of the preceding claims 16 or 17, wherein a first compression force is required to compress the first compression section (K1), wherein a second compression force is required to compress the second compression section (K2), and wherein the second compression force is greater than the first compression force, so that a two-stage compression section is provided [B: so that the first compression section always travels first] 19 Driving tool (2) according to one of the preceding claims 16 to 18, wherein the compression of the first compression section K1 automatically prepares the fastener feed device (90) for the subsequent reloading process, and / or wherein the relaxation of the first compression section x(HV) automatically reloads the driving tool with a fastener (100, 100') from the fastener feed device (90) 20 Driving tool (2) according to one of the preceding claims 16 to 19, wherein the second compression module (84) provides a tool holder (81) for the driving tool (82), and / or wherein the second compression module (84) comprises a sliding sleeve (85), wherein in particular the tool holder (81) is encompassed by the sliding sleeve 21 Driving tool (2) according to one of the preceding claims 16 to 20, wherein the second compression module (84) accommodates a compression or restoring element (88), wherein the compression or restoring element is in particular a spring element, and / or wherein the compression or restoring element (88) is adaptable with regard to the applied restoring force, and / or wherein the compression or restoring element (88) is accommodated in a housing sleeve (89) 22 Driving tool (2) according to the preceding claim, wherein a driving axis (58) is formed from a driving tool drive (75) to the loaded fastening means (100'), and wherein the driving axis leads through the first and second compression modules (83, 84), and / or wherein the driving tool drive (75), the first compression module (83), the second compression module (84) and optionally the loaded fastening means (100') are arranged next to one another in such a way that the driving axis passes through all components 23 Driving tool (2) according to the preceding claim, wherein the fastening means (100, 100') are screwing means, and / or wherein the driving tool (82) is a screwing tool, and / or wherein the centering attachment (10) is designed to hold the fastening means (100, 100') so that the centering attachment has a centering and holding attachment, and / or wherein the centering attachment (10) provides a held or guided driving position for one of the fastening means (100, 100') 24 Driving tool (2) according to the preceding claim, further comprising a centering attachment (10) arranged in the driving direction (56) in front of the driving tool (82) and designed to receive the fastening means (100, 100'), arranged in such a way that the respective fastening means can be at least partially reloaded into the centering attachment by the fastening means feed device (90) and can be grasped there by the driving tool for the subsequent driving in of the fastening means 25 Driving tool (2) according to one of the preceding claims 16 to 24, further comprising a centering attachment holder (4) which is adjustable in particular in the driving direction (56) for receiving the centering attachment (10) on the driving tool 26 Driving tool (2) according to one of the preceding claims 16 to 25, wherein the second compression module (84) has a compression module coupling (85A), and / or the sliding coupling (85) of the second compression module is designed as a compression module coupling, with which the second compression module can be coupled to the first compression module (83), and / or wherein the second compression module (84) comprises a tool extension (73) in order to couple a drive receptacle to the driving tool (82), and / or wherein the second compression module (84) comprises a clamping element (78) for clamping the second compression module to the driving tool drive (75) 27 Driving tool (2) according to one of the preceding claims 16 to 26, wherein the second compression module (84) has a linear guide (86), and / or wherein the sliding sleeve (85) is guided along a linear guide (86) in the compression module (84), and / or wherein the sliding sleeve (85) has a guide pin (87) for engaging in a linear guide (86), and / or wherein the sliding sleeve (85) engages in the first compression module (83) when the first compression module is connected to the second compression module (84) 28 A driving tool according to any one of the preceding claims 16 to 27, wherein the second compression module (84) comprises a driving tool drive receptacle (76) for directly coupling the driving tool drive (75) to the second compression module