EP4034340B1 - Nail driving tool, in particular compressed air nailer, movable guide element, arrangement and kit - Google Patents

Description

The present invention relates to a movable guide element, according to the preamble of claim 1, for detachable attachment to a nail setting device or to a base body of a kit for subsequent attachment to a nail setting device, which can be attached to a nail setting device or a base body in such a way that it can be pivoted about a pivot axis relative to a base body of the nail setting device between a radially inner guide position with respect to a firing channel axis of the nail setting device, in which it partially closes the open front end section of a barrel tube of a nail setting device and guides a nail to be driven in and a firing pin driving it along the firing channel axis, and a radially outer deflection position in which a radial deflection of a nail to be driven in is possible, wherein a linearly extending guide groove for guiding a nail to be driven in and a firing pin is provided in an inner end face facing the firing channel axis in the installed state.

Furthermore, the invention relates to an arrangement, according to the preamble of claim 5, comprising a nail setting device, in particular a pneumatic nailer, with a base body which comprises a running tube for guiding a nail to be driven into a workpiece and a striking pin driving the nail, wherein the running tube extends between a front free end, over which the nail emerges when driven into a workpiece, and a drive-side rear end, wherein the running tube forms a firing channel on the inside along a firing channel axis and has an open front end section in which it surrounds the firing channel only over a partial circumferential section, wherein the nail setting device has fastening means for a movable guide element, and a movable guide element fastened thereto.

Furthermore, the present invention relates to a kit, according to the preamble of claim 10, for subsequently attaching a guide element to a nail setting device, comprising a base body on which attachment means are provided in order to be able to attach the base body to the base body of a nail setting device, and which has fastening means for a movable guide element, and a movable guide element fastened to this.

Furthermore, the present invention relates to a nail setting device according to the preamble of claim 14, in particular a pneumatic nailer, with a base body which comprises a barrel for guiding a nail to be driven into a workpiece and a striking pin driving said nail, wherein the barrel extends between a front free end, through which the nail emerges when driven into a workpiece, and a drive-side rear end, wherein the barrel forms a firing channel on the inside along a firing channel axis and has an open front end section in which it surrounds the firing channel only over a partial circumferential section.

Nails are among the oldest known fasteners in construction technology, such as house building, shipbuilding, armament technology, etc., mostly in connection with the material wood. A distinction must be made between nails made of metal, mostly iron or steel, and wooden nails, which in recent years have increasingly been used to connect one or more components made of Wood. Traditionally, nails are driven into the material to be nailed with hammers. This usually requires several hammer blows, and there is a risk of the nail bending if the nail head is not hit in the extension of the nail shaft.

With increasing industrialization, production speed is becoming more and more important for economic reasons. For this reason, tools have been developed that can drive nails into the components to be connected more quickly than with a hand-held hammer. These include nail setting devices, which can be equipped with different drive concepts. Pneumatic nailers, which are usually operated at pressures of 5 to 6 bar, are particularly important here. With such pneumatic nailers, driving speeds of around 25 meters per second can be achieved.

Conventional pneumatic nailers have a base body which comprises a barrel for guiding a nail to be driven into a workpiece and a firing pin which drives it. The base body can form a device nose, particularly in the case of a modular pneumatic nailer, or be part of a device nose, to which a device for applying compressed air is connected at the back. The barrel extends between a front free end, which is placed on the workpiece to drive a nail, and a rear drive-side end, which is fluidically connected to the device for applying compressed air, and forms a firing channel on the inside. To drive in a nail, the firing pin is pressurized with compressed air by manually actuating a trigger or by automatically actuating it, so that it moves at high speed in the firing channel towards the free end of the barrel and drives a nail into a workpiece.

Pneumatic nailers of this type are particularly popular for driving in metal nails. In recent years, pneumatic nailers have also been increasingly used to drive wooden nails directly into components that are to be joined together without making a pre-drill. To increase processing speeds, nails are connected to form rigid or flexible nail strips so that the nails can be automatically fed into the firing channel one after the other.

If a metal nail hits a hard spot in the workpiece to be connected, the nail is compressed and deformed. To enable the nail to be deformed radially to the firing channel, the barrels of commercially available pneumatic nailers have an open front end section in which the barrel only surrounds the firing channel over a partial section of the circumference. Since wooden nails do not have the ductility of metal nails, the material bond breaks down when they hit a hard spot, so that the wood fibers contained in the wooden nail exert radial pressure on the barrel of the nailing device under the axial pressure of the firing pin due to their then no longer aligned structure. It has been found that this pressure can exceed the strength of the components of the nailing device, in particular the barrel and the firing pin.

Furthermore, when feeding the wooden nails from a nail strip, the problem arises that they slip relative to each other due to vibrations of the setting tool in the nail strip, which can cause disruptions in the nail feed.

Nail setting devices with a movable guide element of the type mentioned above are known, for example, from US 2009/ 007 2000 A1 , which Preamble of claim 1, which US 6 578 749 B1 and the EP 1 741 519 A1 previously known.

The object of the present invention is therefore to further develop a nail setting device of the previously known type in such a way that it is characterized by particular reliability and ease of use and in particular avoids the disadvantages mentioned above.

In a nail setting device of the type mentioned at the outset, it is provided that the nail setting device has fastening means which are designed and suitable for releasably fastening to the base body a movable guide element which can be pivoted about a pivot axis relative to the base body between a radially inner guide position with respect to the firing channel axis, in which it partially closes the open front end section of the barrel and guides a nail to be driven in and the firing pin driving it along the firing channel axis, and a radially outer deflection position in which a radial deflection of a nail to be driven in is possible.

The object underlying the invention is achieved by a movable guide element, according to claim 1, for detachable attachment to a nail setting device or a base body, which can be attached to a nail setting device or a base body in such a way that it can be pivoted about a pivot axis relative to the base body between a radially inner guide position with respect to a firing channel axis of the nail setting device, in which it partially closes the open front end section of a barrel of the nail setting device and guides a nail to be driven in and the firing pin driving it along the firing channel axis, and a radially outer deflection position in which a radial expulsion of a nail to be driven in is possible. According to the invention, the movable guide element has a linearly extending guide groove for guiding a nail to be driven in and a firing pin in an inner end face facing the firing channel axis when it is attached to the nail setting device. A guide groove, which preferably extends in the direction of the firing channel axis when the movable guide element is in its guide position, enables stable guidance of a nail to be driven in, which slides along the movable guide element when being driven into a workpiece.

In a further embodiment, the guide groove can have a V-shaped cross-section, with the opening angle being in particular at least 60° and/or at most 120°, preferably approximately 90°. A V-shaped basic shape creates a two-point support for a nail with a circular cross-section. With an opening angle of 90°, the support points are also offset from one another by an angle of 90° on the contour of the nail.

The front surface, which points radially inwards to the firing channel axis when installed, can have additional surface sections in addition to the guide groove. Preferably, a flat front surface section adjoins the guide groove on both sides, viewed from the center of the groove, with the two front surface sections lying in one plane in particular. Further outwards, in the transition to the side surfaces delimiting the movable guide element, there can be chamfered slopes which can be inclined, for example, at an angle of 15° to the flat front surface sections.

In order to allow a collapsing, radially deforming nail to escape, the rear end of the guide groove opens into a central recess which completely passes through the movable guide element radially to the firing channel axis and separates two webs which protrude to the rear and lie opposite one another. In particular, the central recess can be used to remove wood fibers which are released when a nail collapses, so that a subsequent nail can be driven in directly afterwards without first cleaning the free end of the firing channel and the movable guide element. The width of the recess can be based on the diameter of the nail, in particular be larger than the diameter of the nail to be driven in and/or be approximately 6 mm. A rounding can be provided in the transition to the two webs which protrude to the rear.

In a further design of the movable guide element, the two webs can extend back to different distances. On both sides of the guide groove, inlet contours can be provided in the transition to the webs, which are preferably designed differently on both sides of the guide groove. Tests have shown that the asymmetry of the design of the webs and the inlet contours means that the firing pin cannot hit the movable guide element in an unfavorable manner when it slips off the nail head and be damaged there if the nail collapses. Due to the geometric asymmetry of the movable guide element in the area of the webs and the inlet slopes, damage to the various components can be reliably prevented.

Specifically, the inlet contour can be stepped on one side and comprise a front inlet slope and a rear inlet slope inclined outwards relative to this. The front inlet slope is preferably inclined to the inner face by an angle of at least 20° and at most 40°, preferably by 30°, and the rear inlet slope by an angle of at least 50° and at most 70°, preferably inclined by 60° to the inner face. Such a stepped inlet contour on one side of the guide groove can efficiently absorb high radial forces from a collapsing wooden nail. At the same time, the mechanical stresses on the firing pin and the barrel are minimized and plastic deformation of the components is avoided.

For the same purpose, the transition between the front and rear inlet slopes can be rounded, with the rounding preferably having a radius of about 4 millimeters. Such a rounding between the two inlet slopes prevents a sharp-edged transition and thus the risk of material blocking.

The front inlet slope and the rear inlet slope as well as a rounding formed between them can also extend at least partially into the area of the central recess and form a transition between the guide groove and the central recess.

In a further embodiment of the movable guide element, the inlet contour can be designed as a single-stage inlet bevel on one side of the guide groove and can be inclined to the inner end face by an angle of at least 10° and at most 20°, preferably by 15°. It can thus be provided that one inlet contour is designed in several stages and the other inlet contour is designed as a single-stage inlet bevel. Such asymmetry means that damage to the firing pin and other components can be reliably prevented if a nail collapses and forces acting radially to the firing channel axis occur.

In a further development of this embodiment, the web can be rounded towards the rear adjacent to the run-in phase and have the contour of a partial section of a circular arc.

The object underlying the invention is also achieved by an arrangement of the type mentioned at the outset comprising a nail setting device and a movable guide element attached to it, as described above.

The nail setting device, in particular a pneumatic nailer, has a base body which comprises a barrel for guiding a nail to be driven into a workpiece and a striking pin driving the nail, the barrel extending between a front free end, through which the nail emerges when driven into a workpiece, and a drive-side rear end, the barrel forming a firing channel on the inside along a firing channel axis and having an open front end section in which it only surrounds the firing channel over a partial circumferential section. The nail setting device has corresponding fastening means by means of which a movable guide element is or can be fastened to it.

Furthermore, the object underlying the invention is achieved by a kit for subsequently attaching a guide element to a nail setting device, comprising a base body and a movable guide element attached to it as described above, wherein attachment means are provided on the base body in order to be able to attach the base body to the basic body of a nail setting device, and wherein the base body has attachment means for a movable guide element, and a movable guide element attached to it as described above, so that the guide element can be pivoted about a pivot axis relative to the Base body can be pivoted between a guide position and an evasive position, so that it is suitable for partially closing the open front end section of the barrel of a nail setting device and enabling a radial evasive action of a nail to be driven in.

It is also possible to attach a stationary guide element, which closes the open front end section of the barrel at least partially, in particular over the entire circumference, and guides a nail to be driven in and the firing pin driving it along the firing channel axis, to the base body of a nail-setting device as an alternative to the movable guide element. In other words, it can be provided that the stationary guide element can be attached immovably to a nail-setting device or to a base body of a kit for the subsequent attachment of a guide element to a nail-setting device.

In such a case, depending on the type of nail to be driven in or the ambient conditions, a movable or a stationary guide element can be provided at the front end section of the firing channel, which is partially open. Tests have shown that, particularly for shorter nails, preferably those with a length of less than 65 mm, made of lignocellulosic material, for example wood, a stationary guide element is advantageous and enables reliable driving into a component. In contrast, for longer nails it has proven advantageous to design the front end section of the firing channel in such a way that radial forces which can occur when a wooden nail collapses can be absorbed by a movable guide element which functions like a flap. The movable guide element is able to guide the wooden nail to be driven in and the firing pin in the direction of the open end section of the firing channel and at the same time to prevent radial forces from occurring as a result of a collapsing nail. nail to move sideways and thus absorb the radial forces of the nail and the firing pin. The movable guide element is preferably designed in such a way that it tightly guides a nail to be driven in in its guide position and moves out of its guide position when the firing pin hits in order to absorb the firing pin in a defined manner and to avoid mechanical overloading of the firing pin and the mechanical components.

In principle, it is conceivable to equip a nail setting device directly with such a movable or stationary guide element. Using the kit according to the invention, it is also possible to subsequently equip existing nail setting devices with such guide elements.

The nail setting device can also be constructed in a modular manner. In this case, it can, for example, comprise a device nose which is at least partially formed by the base body. A device for generating and applying compressed air can be provided, functionally separated from this device nose. For this purpose, connecting means can be provided which make it possible to connect the base body to a device for applying compressed air. For example, a flange can be formed at the rear end of the base body for this purpose.

Where the individual components, such as the movable guide element or the stationary guide element or the base body for a kit, are described below, the information refers to the installed state. For example, if a (radially) inner end face is mentioned in connection with a guide element, this means the end face that faces radially inwards towards the firing channel axis when the guide element is attached to a nail setting device.

Preferably, the fastening means of the nail setting device or of the base body comprise a fastening projection which is designed to engage in a corresponding recess of a movable guide element or a stationary guide element.

The fastening means of the nail setting device or the base body of a kit for subsequently attaching a guide element to a nail setting device can comprise a fastening hole which runs offset from the firing channel axis in order to be able to pivotally mount a movable guide element on the nail setting device. The bore axis of the fastening hole can lie in a plane running perpendicular to the firing channel axis in a nail setting device. Accordingly, the bore axis of the fastening hole of the base body can be designed such that it lies in a plane running perpendicular to the firing channel axis when the base body is attached to a nail setting device.

Correspondingly, the movable guide element according to the invention can have bearing means for pivotably supporting the movable guide element relative to the base body of a nail setting device or on the base body of a kit. Specifically, these bearing means can comprise a bearing bore which completely passes through the movable guide element, in particular in a rear area, and by means of which - for example via a bolt or a screw - the guide element can be pivotally supported on the nail setting device or on the base body. In principle, attachment means can be provided for a stationary guide element in order to detachably fasten the guide element to a nail setting device or to the base body of a kit for subsequently attaching a guide element to a nail setting device. These attachment means can comprise a retaining bore which passes through the stationary guide element, so that by means of a Bolt or screw or the like, the guide element can be releasably attached to a nail setting device or to a base body of a kit.

The nail setting device or the base body may be provided with stop means to limit the movement of an attached movable guide element in the direction of the guide position and/or to position an attached stationary guide element relative to the base body or the base body.

The stop means can comprise at least one stop surface which is formed on the nail setting device or on the base body and preferably faces the firing channel axis. It is also conceivable that two different stop surfaces are provided which are stepped relative to one another, with one stop surface serving to limit the movement of the movable guide element in the direction of the guide position and the other stop surface serving to position a stationary guide element.

Correspondingly, a counter surface can be formed on the movable guide element, which is preferably located in a rear section of the movable guide element, in particular is formed by a web, and can be brought into contact with a corresponding stop surface of the nail setting device or the base body. In other words, the guide position of the movable guide element is defined by the stop means, so that any further movement of the guide element into the firing channel is excluded. The stop means or the corresponding counter surface of the movable guide element can be designed in such a way that the movable guide element does not touch the opposite section of the barrel tube. Such a gap between the guide element and the guide tube can allow wood fibers to escape in the event of a collapsing nail.

In a similar way, a stationary guide element can have a contact surface that can be brought into contact with a corresponding stop surface of the nail setting device or the base body of a kit for subsequently attaching a guide element to a nail setting device in order to position the stationary guide element on the nail setting device or on the base body. This design is based on the idea that clear positioning is possible by ensuring that the contact surface of the stationary guide element is in flat contact with the corresponding stop surface and at the same time the retaining hole is arranged in alignment with the fastening hole using a bolt or a screw.

The nail setting device can be designed such that the barrel tube surrounds the firing channel in an open front end section over a circumferential angle of at least 160° and/or at most 200°, preferably over a circumferential angle of 180°.

Furthermore, the nail setting device can have a feed device for nails, which defines a feed axis along which nails oriented parallel to one another are fed one after the other into the barrel channel in order to be driven into a workpiece. The feed axis preferably extends transversely to the firing channel axis. In a specific embodiment, the firing channel axis and the feed axis can enclose an acute angle to the rear, in particular an angle of at least 60° and/or of at most 85°, preferably of approximately 75°.

The nail setting device can be designed in such a way that a guide rail is provided which extends parallel to the feed axis and runs in front of it in order to support nails to be fed at their tips. In the same way, a guide rail can be provided in the base body for a kit, which is designed in such a way that after the base body is attached to the nail setting device, it extends parallel to the feed axis and runs in front of it in order to support nails to be fed at their tips. These embodiments are based on the idea of providing a rail protruding from the running tube, against which the nails to be fed can hit with their tips if they become detached from the nail strip. This prevents the nails from slipping forwards out of the nail strip and blocking the supply of nails to the running channel.

The nail setting device is preferably designed in such a way that the guide rail is formed in one piece with the base body. Alternatively, it is conceivable that the guide rail is detachably attached to the base body, in particular screwed to it. In a similar way, the guide rail can be formed in one piece with the base body in a base body. It is also possible for the base body to be formed in several parts and the guide rail is screwed to the rest of the base body as a separate component.

If the guide rail and the base body of the nail setting device or the base body of the kit are designed as separate components, a rear-facing contact surface can be provided for support at a front end area of the base body or the base body, against which the guide rail rests. This fixes the position of the guide rail when it is screwed on or otherwise attached, so that the guide rail cannot slip or rattle. In order to improve the guidance of the nails to be fed along the feed axis, a longitudinal groove extending in its longitudinal direction with a particularly V-shaped cross-section can be formed in the guide rail in the rear-facing side, wherein the opening angle of the cross-section can be, for example, approximately 140°.

In a further embodiment, the guide rail can have a feed slope at the rear at its end area radially to the firing channel axis in order to avoid blocking nails being fed in. In other words, a feed slope is provided in order to force nails that have already slipped out of the nail strip back into their correct position in the nail strip when they are fed in.

In a further embodiment of the nail setting device, the fastening means can be arranged on a radially inner end region directly on the guide rail. In the same way, in a base body for a kit for subsequently attaching a guide element to a nail setting device in which a guide rail is provided, the fastening means can be arranged on the guide rail, in particular on a radially inner end region of the guide rail. This means that the movable or stationary guide element can be attached directly to the guide rail. The guide rail can engage in a central recess in the respective guide elements.

The central recess of the movable guide element and the guide rail can be designed in such a way that the guide rail fills the central recess over its entire width, so that there is practically no gap between the guide rail and the two webs which laterally delimit the central recess of the movable guide element. This prevents a gap from filling with wood fibres when a nail collapses and impairing the pivoting movement of the movable guide element.

In order to attach the kit according to the invention to a nail-setting device, attachment means for attachment to a base body of a nail-setting device can be provided on the base body of the kit. Specifically, the attachment means can comprise threaded holes for screwing onto a nail-setting device. In order to position the base body on a base body of a nail-setting device, a contact surface can be formed on the base body, which is intended to rest on a corresponding counter edge of the base body of a nail-setting device.

In a similar way to the movable guide element, the stationary guide element can also have a linearly extending guide groove for guiding a nail to be driven in and a firing pin in an inner end face facing the firing channel axis when installed. The guide groove preferably has a semicircular cross-section. The cross-section of the guide groove is preferably adapted to the diameter of the nails to be driven in. In particular, it is provided that the cross-section is adapted in such a way that a nail to be driven in is guided tightly, i.e. with little play or without play.

Flat end face sections can be arranged on both sides of the guide groove. Transition bevels can be formed at the rear end of at least one end face section, whereby a secure feeding of the nails and the firing pin is achieved. In particular, a transition bevel can be provided only on one side of the guide groove, which is at an angle of at least 10° and at most 50°, preferably in at an angle of approximately 30° to the adjacent flat end face section.

Furthermore, the stationary guide element can comprise a guide projection that projects to the rear and over which the guide groove extends. The guide projection can be rounded and/or bevelled at its rear free end. The guide projection, on which part of the guide groove is formed, enables the guide groove to extend over almost the entire axial length of the open front end section of the barrel tube when installed.

The stationary guide element can also comprise a central recess, which is preferably open to the rear and to the outside. The guide rail can engage in this central recess when mounted. Furthermore, the retaining hole can be arranged in the area of this recess.

A contact surface can be formed in a rear and/or radially outer section of the stationary guide element, which can be brought into contact with a corresponding stop surface of a nail setting device or a base body in order to firmly position the stationary guide element on the nail setting device or on the base body. Since the stationary guide element must be able to be attached immovably to the nail setting device or to the base body of a kit for subsequently attaching a guide element to a nail setting device, a bearing with a bolt is not sufficient. According to this embodiment, it is provided that an additional contact surface of the stationary guide element is brought into contact with or rests on a corresponding stop surface, so that the bolt or the screw and the contact of the two surfaces the stationary guide element is clearly and firmly positioned.

The arrangement can be designed in such a way that the counter surface of the movable guide element can be brought into contact with a stop surface of the base body in order to limit the movement of the movable guide element in the direction of its guide position. Accordingly, in the kit according to the invention, the counter surface of the movable guide element can be brought into contact with a stop surface of the base body.

Preferably, the fastening means are arranged on an inner end region of the guide rail of the nail setting device or of the base body, so that the guide rail can engage in the central recess of the movable guide element. The bearing bore can also expediently be arranged in the region of the central recess of the movable guide element.

The arrangement or kit can be designed such that a bolt or a screw passes through the bearing hole of the movable guide element and the fastening hole of the nail setting device or the base body in order to pivotally mount the movable guide element relative to the base body of the nail setting device or the base body. Furthermore, securing means can be provided to secure the bolt or the screw in the fastening hole or bearing hole, wherein the securing means preferably comprise a locking ring or a nut, in particular a hexagon nut. Such a locking ring can, for example, be designed such that it can only be removed from the bolt using a tool. It is conceivable that the locking ring engages in a corresponding groove formed in the bolt. This ensures that only users who have the appropriate tools can replace the corresponding guide element on a nail setting device or a base body of a kit. Alternatively, the securing means can also include a screw which is secured against unintentional loosening, for example with a nut, in particular a hexagon nut.

Furthermore, pre-tensioning means can be provided to pre-tension the movable guide element in the direction of its guide position. Specifically, the pre-tensioning means can comprise a compression spring, in particular a helical compression spring, which is supported between the base body of the nail setting device, in particular a forward-projecting projection of the base body, or the base body of the kit, and a section of the movable guide element located axially in front of the pivot axis. This design is based on the idea that the movable guide element should basically be in its guide position and should return to the guide position independently after a movement out of the guide position as a result of a collapsing nail. On the other hand, pre-tensioning in the direction of the guide position ensures that the nail to be driven in and the striking pin are guided and that when radial forces occur, the guide element deflects in a defined manner against the restoring force of the compression spring. At the same time, this ensures that after the unsuccessful driving in of a collapsed nail and the associated movement of the guide element out of its guide position, the movable guide element automatically returns to its guide position before the next nail is driven in.

In order to avoid buckling of the compression spring, the nail setting device, in particular in the base body of the nail setting device, or the Blind holes should be provided between the base body of a kit and the movable guide element, into which the compression spring engages or can engage. Alternatively or additionally, if it is a helical compression spring, a guide pin, for example made of hard rubber, can be inserted into the interior to prevent buckling.

Furthermore, an arrangement comprising a nail setting device as described above with a stationary guide element attached to it in an immovable manner as described above is also conceivable. Likewise, a kit with a base body and a stationary guide element attached to it, each as described above, can also be provided.

The object underlying the invention is further achieved by a nail setting device according to patent claim 14, with a kit attached thereto as described above.

In principle, a system comprising a nail setting device, a movable guide element and a stationary guide element, each as described above, as well as a retrofit system comprising a base body of a kit for subsequently attaching a guide element to a nail setting device, a movable guide element and a stationary guide element, each as described above, is also conceivable, so that a user can optionally detachably attach a movable guide element or a stationary guide element to the nail setting device or to the base body.

This design is based on the idea of providing the user with two different guide elements, namely a stationary and a movable guide element. Depending on the general conditions, in particular the length of the nails to be driven, the Users can then select between one of the two guide elements and attach it detachably to a nail setting device or a corresponding kit.

The system or the retrofit system can further comprise a bolt or a screw which can pass through the fastening hole of the nail setting device or the base body and the bearing hole of a movable guide element in order to pivotally mount the movable guide element relative to the base body. In the same way, this bolt or the screw can pass through the fastening hole and the holding hole of a stationary guide element in order to releasably fasten the stationary guide element immovably to the base body of the nail setting device or to the base body of a kit. In other words, the optional fastening of a movable or stationary guide element can be carried out by arranging the corresponding holes in alignment with one another and inserting a bolt or a screw.

In order to prevent the bolt or screw from accidentally moving out of the corresponding holes, locking means can be provided. In the case of a bolt, these can include a locking ring which prevents the bolt from accidentally moving within the holes.

The system can further comprise pre-tensioning means in order to be able to pre-tension the movable guide element in the direction of its guide position. Specifically, the pre-tensioning means can comprise a compression spring, in particular a helical compression spring, which is located between the base body of the nail setting device, in particular a forwardly projecting projection of the base body, or the base body of the kit and an axially the section of the movable guide element located on the pivot axis.

The individual components of the system or the retrofit system can be designed in such a way that a counter surface of the movable guide element can be brought into contact with a stop surface of the nail setting device or the base body in order to limit the movement of the movable guide element in the direction of its guide position. Furthermore, a contact surface can be provided on the stationary guide element, which can be brought into contact with a corresponding stop surface of the nail setting device or the base body in order to clearly position the stationary guide element relative to the base body or base body.

Preferably, the fastening means are arranged on an inner end region of the guide rail of the nail setting device or of the base body, so that the guide rail can engage in the central recess of the movable guide element and/or the stationary guide element. The bearing bore can also expediently be arranged in the region of the central recess of the movable guide element or the holding bore in the region of the central recess of the stationary guide element.

Figur 1

eine erfindungsgemäße Anordnung in einer teilweisen perspektivischen Darstellung mit einem montierten bewegbaren Führungselement;

Figur 2

die Gerätenase aus Figur 1 in einer weiteren perspektivischen Darstellung;

Figur 3

die Führungsschiene und einen Teil des Grundkörpers des Nagelsetzgeräts aus Figur 1 in einer Seitenansicht;

Figur 4

die Führungsschiene und den Teil des Grundkörpers aus Figur 3 in einer bezogen auf die Schusskanalachse radial nach außen gerichteten Ansicht;

Figur 5

die Führungsschiene und den Teil des Grundkörpers aus Figur 3 in einer Rückansicht;

Figur 6

das bewegbare Führungselement der Anordnung aus der Figur 1 in einer perspektivischen Darstellung;

Figur 7

das bewegbare Führungselement aus Figur 6 in einer bezogen auf die Schusskanalachse radial nach innen gerichteten Ansicht;

Figur 8

das bewegbare Führungselement aus Figur 6 in einer teilweise geschnittenen Ansicht;

Figur 9

das bewegbare Führungselement aus Figur 6 in einer bezogen auf die Schusskanalachse radial nach außen gerichteten Ansicht;

Figur 10

das bewegbare Führungselement aus Figur 6 in einer weiteren Seitenansicht;

Figur 11

ein Bausatz gemäß der vorliegenden Erfindung zum Anbringen an einem Nagelsetzgerät in einer perspektivischen Darstellung;

Figur 12

dem Bausatz aus Figur 11 in einer weiteren perspektivischen Darstellung;

Figur 13

die Gerätenase eines Nagelsetzgeräts mit einem Bausatz der Figur 11 in einer perspektivischen Darstellung;

Figur 14

die Gerätenase aus Figur 13 in einer weiteren perspektivischen Darstellung;

Figur 15

die Gerätenase des Nagelsetzgeräts aus Figur 13 und 14 mit einem Bausatz, jedoch mit einem montierten stationären Führungselement in einer perspektivischen Darstellung;

Figur 16

die Gerätenase aus Figur 15 in einer weiteren perspektivischen Darstellung;

Figur 17

das stationäre Führungselement aus Figur 15 und 16 in einer perspektivischen Darstellung; und

Figur 18

das stationäre Führungselement aus Figur 17 in einer weiteren perspektivischen Darstellung.

For the further development of the invention, reference is made to the dependent claims and to the accompanying drawing. In the drawing:

Figure 1

an arrangement according to the invention in a partial perspective view with a mounted movable guide element;

Figure 2

the device nose Figure 1 in another perspective view;

Figure 3

the guide rail and part of the base body of the nail setting device Figure 1 in a side view;

Figure 4

the guide rail and the part of the base body Figure 3 in a view directed radially outwards with respect to the firing channel axis;

Figure 5

the guide rail and the part of the base body Figure 3 in a rear view;

Figure 6

the movable guide element of the arrangement from the Figure 1 in a perspective view;

Figure 7

the movable guide element Figure 6 in a view directed radially inwards with respect to the firing channel axis;

Figure 8

the movable guide element Figure 6 in a partially sectioned view;

Figure 9

the movable guide element Figure 6 in a view directed radially outwards with respect to the firing channel axis;

Figure 10

the movable guide element Figure 6 in another side view;

Figure 11

a kit according to the present invention for attachment to a nail setting device in a perspective view;

Figure 12

the kit from Figure 11 in another perspective view;

Figure 13

the nose of a nail setting device with a kit of Figure 11 in a perspective view;

Figure 14

the device nose Figure 13 in another perspective view;

Figure 15

the nose of the nail setting device Figure 13 and 14 with a kit, but with a mounted stationary guide element in a perspective view;

Figure 16

the device nose Figure 15 in another perspective view;

Figure 17

the stationary guide element made of Figure 15 and 16 in a perspective view; and

Figure 18

the stationary guide element made of Figure 17 in another perspective view.

The Figures 1 and 2 show an arrangement according to the invention with a nail setting device for driving nails into workpieces to be joined, which comprises a device nose 1.

The nose 1 of the nail setting device has a base body 2 designed as a cast part. This comprises a barrel 3 for guiding a nail to be driven into a workpiece and a firing pin (not shown) that drives this. The barrel 3 extends between a front free end 4, through which the nail emerges when driven into a workpiece, and a drive-side rear end of the base body 2. On the inside, the barrel 3 forms a firing channel 5 along a firing channel axis X. The barrel 3 also has an open front end section 6, in which it only surrounds the firing channel 5 over a partial circumferential section of approximately 180°.

In order to supply compressed air to the firing channel 5 for driving the firing pin, the base body 2 is provided at its rear end with a flange 5, through which it is connected to a device (not shown) for supplying compressed air.

The nose 1 of the nail setting device also has a feed device 8 for nails, which defines a feed axis Y. This forms an acute angle of approximately 75° with the firing channel axis X to the rear. Along the feed axis Y, nails of a nail strip oriented parallel to one another can be fed one after the other into the firing channel 5. Specifically, the feed device 8 comprises a door 10 which is pivotably connected to the base body 2 via a hinge 9. In Figure 2 the door 10 is shown in a closed state and is securely closed by a locking element 11 which engages positively in a corresponding contour of the base body 2. If a nail strip is to be inserted into the feed device 8, the locking element 11 is removed from the Figure 2 shown position against the restoring force of a tension spring 12, so that the door 10 can be opened and a nail strip can be inserted into the feeding device 8 before the door 10 is closed again.

In a front end region of the base body 2, a guide rail 14 is provided on a forward-projecting projection 13, which extends parallel to the feed axis Y and runs in front of it in order to support nails to be fed into the firing channel at their tip. Specifically, the guide rail 14 is formed in one piece with the base body 2.

In the Figures 3 to 5 the guide rail 14 and the projection 13 of the base body 2 are shown in detail. At its end area radially to the firing channel axis X, the guide rail has a feed slope 15 at the top in order to move nails that may have slipped in the nail strip back to their intended position. On its side facing backwards, towards the feed axis Y, a longitudinal groove 16 is formed in the longitudinal direction of the guide rail 14. This has a rectangular cross-section in order to support nails to be fed at their tip and to guide them along the feed axis Y.

Fastening means are provided on an end section of the guide rail 14 that is located radially inward to the firing channel axis X in order to mount a movable guide element 17 so that it can pivot about a pivot axis Z relative to the base body. Specifically, the fastening means comprise a fastening hole formed in the guide rail 14. The movable guide element is pivotally mounted by means of a bolt 18 that passes through a bearing hole 19 and the fastening hole along the pivot axis Z and is secured against unintentional loosening by means of a locking ring 20.

The guide element 17 is between a radially inner guide position relative to the firing channel axis X, as shown in Figure 1 and 2 shown, and a radially outer evasive position. In the guide position, the guide element 17 partially closes the open front end section 6 of the barrel 3 and guides a nail to be driven in and the firing pin driving it along the firing channel axis X. In the radially outer evasive position, a radial evasive action of a nail to be driven in is possible.

In the Figures 6 to 10 the movable guide element is shown in detail as a single component. In its inner face 21 facing the firing channel axis X, the movable guide element 17 has a linearly extending guide groove 22 for guiding a nail to be driven in and the firing pin. The guide groove 22 has a V-shaped cross section with an opening angle of 90°.

On both sides of the guide groove 22 - viewed from the center of the groove - a flat end face section 23 adjoins the guide groove 22, with the two end face sections 23 lying in one plane. Further outwards, in the transition to the side surfaces 24 delimiting the guide element 17, there are chamfered slopes 25 which are inclined at an angle of approximately 15° to the end face sections 23.

The rear end of the guide groove 22 opens into a central recess 26, which completely penetrates the guide element 17 radially to the firing channel axis X and separates two rearwardly projecting, mutually opposite webs 27, 28. The central recess 26 has a width of approximately 6.5 mm and is rounded at the transition to the webs 27, 28, as can be seen in particular in Figure 7 The guide rail 14 engages flush with the central recess 26, so that between the guide rail 14 and the webs 27, 28 there is no significant gap.

The two webs 27, 28 protrude rearwardly from the central recess 26 at different angles, whereby the Figure 9 The web 27 arranged on the left projects less far to the rear than the web 28 arranged on the right.

In order to prevent a nail being driven in from becoming blocked, inlet contours of different designs are provided on both sides of the guide groove 22 in the transition to the webs 27, 28. In the transition to the web 27, the inlet contour is stepped and comprises a front inlet slope 29, which is inclined at an angle of 30° to the inner front side, and a rear inlet slope 30, which is inclined outwards relative to this and is inclined at an angle of 60° to the inner front side. A rounding 31 is formed between the front inlet slope 29 and the rear inlet slope 30, which in this case has a radius of 4 mm. The front inlet slope 29, the rear inlet slope 30 and the rounding 31 arranged between them also form, at least in part, the transition from the guide groove 22 to the central recess 26.

On the other side, the inlet contour in the transition to the web 28 is designed as a single-stage inlet bevel 32 and is inclined at an angle of 15° to the inner end face. Adjacent to the inlet bevel 32, the web 28 is rounded towards the rear and has the contour of a partial section of a circular arc.

As in Figure 1 and Figure 2 As can be seen, stop means are provided to limit the movement of the guide element 17 in the direction of the guide position. Specifically, the stop means have a stop on the base body 2 formed stop surface 33, which is located behind and radially outside of the pivot axis Z. A corresponding counter surface 34 of the guide element 17 rests against this.

Furthermore, pre-tensioning means are provided to pre-tension the guide element 17 in the direction of its guide position. In the present case, the pre-tensioning means comprise a helical compression spring 35, which is supported between the projection 13 of the base body 2 and a section of the guide element 17 located axially in front of the pivot axis Z. In order to prevent the helical compression spring 35 from buckling, blind holes 36 are provided in the projection 13 of the base body 2 and in the guide element 17, into which the helical compression spring 35 engages.

The Figures 11 and 12 show a kit 37 according to the present invention for attachment to a nail setting device 1; the Figures 13 and 14 show a device nose 1 of a nail setting device with such a kit 37.

The kit 37 makes it possible to subsequently equip an existing nail setting device with a guide rail 14 for guiding the nails to be fed in and with a movable guide element 17 for guiding a nail to be driven in and a striking pin.

The kit 37 comprises a base body 38, which is designed to be attached to the base body 2 of a device nose of the nail setting device. For this purpose, fastening means are provided, which in the present case comprise threaded holes 39 formed in the base body 38 for screwing onto the base body 2 of a device nose 1 of a nail setting device. For positioning the base body 38 relative to the base body 2 of a nail setting device 1, a contact surface 70 is formed on the base body 38, which, as in the Figures 13 and 14 shown, can be brought into contact with a corresponding counter edge 41 of the base body 2 of the device nose 1 of a nail setting device.

On the base body 38, in the same way as on the projection 13 of the base body 2 of the nose 1 of a nail setting device, the Figures 1 to 10 A guide rail 14 is provided to support the nails to be fed forward. The guide rail 14 and the base body 38 are formed as one piece.

Also in the same way, a guide element 17 is attached to the guide rail 14, as shown in the Figures 6 to 10 shown, is pivotally mounted between a guide position and an evasive position, so that it is suitable for partially closing the open front end section 6 of the running tube 3 and enabling a radial evasion of a nail to be driven in.

Both in the Figure 1 and 2 shown nose 1 of a nail setting device, in which the guide rail 14 is attached directly to the base body 2, as well as in the nail setting device 1 provided with the kit 37 according to the invention of the Figures 13 and 14 Wooden nails from a nail strip are successively fed to the running tube 3 by the feeding device 8.

The guide rail 14 and the longitudinal groove 16 formed in it, as well as the feed slope 15, ensure that the wooden nails contained in the nail strip cannot slip, or that slipped wooden nails return to their correct position relative to the nail strip, so that a reliable and trouble-free feeding of the nails to the firing channel 5 is ensured. is achieved.

If a wooden nail inserted into the firing channel 5 is to be driven into a workpiece, the front free end 4 of the barrel 3 is first placed on the workpiece. The firing channel 5 is then pressurized with air pressure by manual or automated operation so that the firing pin drives the wooden nail in the direction of the front free end 4 of the barrel 3 along the firing channel axis X. The nail leaves the barrel 3 at a speed of around 25 m/s and penetrates a workpiece. The nail is guided by the guide element 17 in the area of the open front end section 6 of the barrel 3.

If the nail does not encounter a hard spot in the workpiece, it will penetrate completely into the workpiece without any problem, without the guide element 17 being moved out of the guide position and without the nail exerting radial forces on other components of the nail setting device, for example the firing pin or the guide element 17 or the barrel 3.

If, however, the nail to be driven into the workpiece encounters a hard spot, it frays due to the lack of ductility and collapses. This causes the nail cross-section to widen in the rear end area of the nail, so that considerable radial forces occur. In this case, the guide element 17 moves radially outwards against the preload force of the helical compression spring 35 in relation to the firing channel axis X and thus enables the nail to expand radially. In addition, the central recess 26 of the guide element 17 means that wood fibers of the nail can emerge laterally from the firing channel 5. Furthermore, the defined deflection of the guide element 17, in particular due to its asymmetrical design, intercepts the nail and the firing pin driving it, without high mechanical stresses. which may damage components of the nose 1 of a nail setting device.

Even if a nail collapses by hitting a hard spot in the workpiece, the guide element 17 automatically returns to its guide position due to the restoring force of the helical compression spring 35, so that the next nail can be driven directly into the workpiece without any complex troubleshooting work. Because the guide rail 14 engages in the central recess 26 of the guide element 17 without any significant play, no wood fibers can become stuck and block the movement of the guide element 17 relative to the base body 2.

For certain nails, especially those of a short length, it has proven advantageous not to provide any escape route. Accordingly, the Figures 15 and 16 a device nose 1 of a nail setting device with a base body 38, but not a movable guide element 17, but a stationary guide element 42 is attached to the base body 38. The Figures 17 and 18 show the stationary guide element 42 as a separate component in detail.

The stationary guide element 42 has a linearly extending guide groove 44 with a semicircular cross-section in its inner end face 43, which in the installed state points towards the firing channel axis X. This serves to guide a nail to be driven in and the firing pin of the nail setting device 1. Flat end face sections 45 are arranged on both sides of the guide groove 44, with the Figure 18 The front surface section 45 shown on the left ends at the top in a transition slope 46. This is inclined at an angle of approximately 30° to the flat front surface section 45.

As particularly in the Figures 17 and 18 As can be seen, the guide groove 44 also extends over a guide groove projection 47 which projects to the rear and is bevelled and rounded in its rear end region. Due to this guide groove projection 47, the guide groove 44 extends essentially over the entire axial length of the open front end section 6 of the barrel 3.

The stationary guide element 42 further comprises attachment means for detachably attaching the guide element 42 to the base body 38 of the kit 37. Specifically, the attachment means comprise a retaining hole 48 which completely penetrates the stationary guide element 42. In the Figures 15 and 16 it can be seen that the stationary guide element 42 is detachably attached to the base body 38. The bolt 18 completely penetrates the retaining hole 48 of the stationary guide element 42 and the fastening hole of the base body 38 and is secured against unintentional release by means of the locking ring 20.

Furthermore, the stationary guide element 42 is provided with a central recess 49 which is open to the rear and radially outward and into which the guide rail 14 of the base body 38 engages, so that a space-saving fastening of the stationary guide element 42 can be realized.

At its radially outer end, the stationary guide element 42 has a contact surface 50, which can be brought into contact with a corresponding second stop surface 51 of the base body 38 in order to firmly position the stationary guide element 42 on the base body 38. In conjunction with the fastening via the retaining hole 48, the stationary guide element 42 is thus firmly attached to the base body, as can be seen in Figure 15. 38 and thus firmly positioned relative to the base body 2 of the nail setting device.

A user can therefore optionally attach a stationary guide element 42 or a movable guide element 17 to the nail setting device, i.e. depending on the type of nails to be driven in and other conditions. To do this, he only has to remove the locking ring 20 from the bolt 18 and pull the bolt 18 out of the corresponding holes. The guide element 17, 41 can then be replaced without any problems. In this way, the nail setting device shown can be used universally and is suitable for driving in various nails, in particular those made of lignocellulosic material.

List of reference symbols

1

Device nose

2

Base body

3

Barrel

4

front free end

5

Firing channel

6

open front end section

7

flange

8th

Feeding device

9

hinge

10

door

11

Locking element

12

Compression spring

13

head Start

14

Guide rail

15

Feed slope

16

Longitudinal groove

17

movable guide element

18

Pivot bolt

19

Bearing bore

20

Retaining ring

21

inner face

22

Guide groove

23

Frontal section

24

Side surface

25

chamfered slope

26

central recess

27

web

28

web

29

front inlet slope

30

rear inlet slope

31

Rounding

32

Lead-in chamfer

33

Stop surface

34

Counter surface

35

Helical compression spring

36

blind hole

37

Kit

38

Base body

39

Threaded hole

40

Contact surface

41

Counter edge

42

stationary guide element

43

inner face

44

Guide groove

45

flat front surface section

46

Transition slope

47

Guide groove projection

48

Retaining hole

49

central recess

50

Contact surface

51

second stop surface

X

Firing channel axis

Y

Feed axis

Z

Swivel axis

Claims (14)

1. Movable guide element (17) for detachable attachment to a nail setting device or to a basic body (38) of a kit for subsequent attachment to a nail setting device, which guide element (17) can be attached to a nail setting device or a basic body (38) in such a way that it can be moved between a radially inner guide position in relation to a firing channel axis of the nail setting device, in which it partially closes the open front end section (6) of a barrel (3) of a nail setting device and guides a nail to be driven in and a firing pin driving it along the firing channel axis, and a radially outer deflection position, in which a radial deflection of a nail to be driven in is possible, about a pivot axis relative to a base body (2) of the nail setting device, wherein a linearly extending guide groove (22) for guiding a nail to be driven in and a firing pin is provided in an inner end face (21) facing the firing channel axis in the installed state, characterized in that the rear end of the guide groove (22) opens into a central recess (26) which completely penetrates the guide element (17) from the inside to the outside and separates two rearwardly projecting, mutually opposite webs (27, 28).
2. Movable guide element (17) according to claim 1, characterized in that the guide groove (22) has a V-shaped cross-section, the opening angle being in particular at least 60° and/or at most 120°, preferably about 90°, and/or in that the two webs (27, 28) project rearwardly by different distances.
3. Movable guide element (17) according to claim 1 or 2, characterized in that inlet contours are provided on both sides of the guide groove (22) in the transition to the webs (27, 28), wherein, in particular, the inlet contours are formed differently on both sides of the guide groove (22) and/or the inlet contour is stepped on one side of the guide groove (22) and comprises a front inlet slope (29) and a rear inlet slope (30) inclined outwards relative thereto, wherein, preferably, the front inlet slope (29) is inclined by an angle of at least 20° and at most 40°, preferably by 30° to the inner end face, and the rear inlet slope (30) is inclined by an angle of at least 50° and at most 70°, preferably by 60° to the inner end face (21), and/or the transition between the front and the rear inlet slope (30) is rounded, wherein the rounding (31) particularly preferably has a radius of about 4 mm.
4. Movable guide element (17) according to claim 3, wherein the inlet contours on both sides of the guide groove (22) are formed differently, characterized in that on one side of the guide groove (22) the inlet contour is formed in one step as an inlet chamfer (32) and is inclined by an angle of at least 10° and at most 20°, preferably by 15° to the inner end face (21), wherein, in particular, the web adjacent to the inlet chamfer (32) is rounded towards the rear and has the contour of a partial section of an arc of a circle.
5. Arrangement comprising

   a nail setting device, in particular a pneumatic nailer, with a base body (2) which comprises a barrel (3) for guiding a nail to be driven into a workpiece and a firing pin driving the nail, wherein the barrel (3) extends between a front free end (4), via which the nail emerges when driven into a workpiece, and a rear end on the drive side, wherein the barrel (3) forms a firing channel (5) on the inside along a firing channel axis and has an open front end section (6) in which it surrounds the firing channel (5) only over a partial circumferential section, wherein the nail setting device has fastening means for a movable guide element (17),

   characterized in that a movable guide element (17) according to any of the preceding claims is fastened to the nail setting device, so that the movable guide element (17) is pivotable about a pivot axis relative to the base body (2) between a radially inner guide position in relation to the firing channel axis, in which it partially closes the front end section (6) of the barrel (3) and guides a firing pin driving the latter along the firing channel axis, and a radially outer deflection position, in which radial deflection of a nail to be driven in is possible.
6. Arrangement according to claim 5, characterized in that the fastening means of the nail setting device comprise a fastening bore which runs offset to the firing channel axis, in particular lies in a plane running perpendicular to the firing channel axis, and the movable guide element (17) has bearing means which comprise a bearing bore (19) which passes completely through the guide element (17), in particular in a rear region, and in that a bolt (18) or a screw passes through the fastening bore and the bearing bore (19) in order to pivotably mount the guide element (17) to the base body of the nail setting device, and/or in that a counter surface (34) is formed in particular in a rear section of the guide element (17) and stop means are provided on the nail setting device, which have a stop surface (33) formed on the nail setting device, in particular on the base body (2) and preferably pointing towards the firing channel axis, so that the counter surface (34) of the guide element can be brought into contact with the stop surface (33) of the base body (2) in order to limit the movement of the guide element (17) in the direction of the guide position, and/or in that pretensioning means are provided in order to pretension the movable guide element (17) in the direction of its guide position, and/or in that the barrel (3) surrounds the firing channel (5) in an open front end section (6) over a circumferential angle of at least 160° and/or at most 200°, preferably over a circumferential angle of 180°.
7. Arrangement according to claim 5 or 6, characterized in that the nail setting device has a feeding device (8) for nails, which defines a feed axis along which nails oriented parallel to one another are fed one after the other to the fixing channel (5) in order to be driven into a workpiece, the feed axis extending transversely to the fixing channel axis.
8. Arrangement according to claim 7, characterized in that a guide rail (14), which extends parallel to the feed axis and runs in front of the latter, is provided in order to support nails to be fed at their tip, the guide rail (14) being, in particular, detachably fastened to the base body (2), preferably screwed to the latter, or this guide rail (14) is formed in one piece with the base body (2), and/or a longitudinal groove (16) extending in its longitudinal direction with a particularly V-shaped or rectangular cross-section is formed in the guide rail (14) on the side pointing to the rear, and/or the guide rail (14) has a feed slope (15) at its radially outer end region towards the rear in relation to the firing channel axis, in order to avoid blocking of nails to be fed, and/or the firing channel axis and the feed axis enclose an acute angle towards the rear, in particular an angle of at least 60° and/or of at most 85°, preferably of about 75°.
9. Arrangement according to claim 8, characterized in that the fastening means are arranged directly on the guide rail (14) at a radially inner end region.
10. Kit (37) for subsequently attaching a guide element to a nail setting device, the kit (37) comprising a basic body (38) on which attachment means are provided in order to be able to attach the basic body to the base body of a nail setting device, and which has fastening means for a movable guide element (17),
    characterized in that a movable guide element (17) according to any of claims 1 to 4 is fastened to the basic body (38), so that the guide element (17) is pivotable about a pivot axis relative to the basic body (38) between a guide position and a deflection position, so that it is suitable for partially closing the open front end section (6) of the barrel (3) of a nail setting device and enabling radial deflection of a nail to be driven in.
11. Kit (37) according to claim 10, characterized in that the fastening means of the basic body (38) comprise a fastening bore, and the movable guide element (17) has bearing means which comprise a bearing bore (19) which completely penetrates through the guide element (17), in particular in a rear region, and in that a bolt (18) or a screw passes through the fastening bore and the bearing bore (19), in order to pivotably mount the guide element (17) on the basic body (38), and/or in that stop means are provided on the basic body (38) in order to limit the movement of the guide element (17) in the direction of the guide position, the stop means having a stop surface (33) formed on the basic body (38), and a counter surface (34) being formed in particular in a rear section of the guide element (17), so that the counter surface (34) of the guide element can be brought into contact with the stop surface (33) of the basic body (38) in order to limit the movement of the movable guide element (17) in the direction of the guide position, and/or in that securing means are provided in order to secure the bolt (18) or the screw in the fastening bore and the bearing bore (19), wherein the securing means preferably comprise a locking ring (20) or a nut, in particular a hexagon nut, and/or in that pretensioning means are provided in order to pretension the movable guide element (17) in the direction of its guide position, and/or that the attachment means comprise threaded holes (39) for screwing the basic body (38) to the base body (2) of the nail setting device.
12. Kit according to claim 10 or 11, characterized in that a guide rail (14) is provided on the basic body (38), which guide rail is designed and arranged in such a way that, after the basic body (38) has been attached to a nail setting device, it extends parallel to a feed axis (Y) of the nail setting device and runs in front of the latter, in order to support nails to be fed at its tip, wherein, in particular, the guide rail (14) is formed in one piece with the basic body (38), wherein, preferably, a longitudinal groove (16) extending in its longitudinal direction and having a particularly V-shaped or rectangular cross-section is formed in the guide rail (14) in a rearwardly facing side.
13. Kit (37) according to claim 12, characterized in that the guide rail (14) has a feed slope (15) at an outer end region towards the rear in order to avoid blocking of nails to be fed.
14. Nail setting device having a base body (2) which comprises a barrel (3) for guiding a nail to be driven into a workpiece and a driving pin which drives the nail, the barrel (3) extending between a front free end (4), via which the nail emerges when driven into a workpiece, and a drive-side rear end, the barrel (3) forming a firing channel (5) on the inside along a firing channel axis and having an open front end section (6), in which it surrounds the firing channel (5) only over a partial circumferential section, characterized by a kit (37) according to one of claims 10 to 13 attached thereto.

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