EP0229195A1 - Magazine for a power-driven tool for driving pins or nails or the like - Google Patents

Abstract

Magazine (18) for a power-driven driving tool for receiving pins or nails, in particular headless pins or nails, with a guide channel, the top wall of which can have a different height than the bottom wall for adaptation to the lengths of the pins or nails. One side wall of the guide channel is formed by a longitudinal surface of at least one lamella (34) which is mounted in the upper region of the guide channel along an axis transverse to the longitudinal axis of the guide channel and is preloaded in the direction of the other side wall by means of a spring (38). A side cover rail (21) in a retracted position releases the guide channel for loading from the side and its guide is designed so that in the closed position of the cover rail, the longitudinal surface of the slat either on the other side wall or at the upper ends of the nails or Pins are present and in the partially or fully open rear position the lamella is at a distance from the other side wall.

Description

The invention relates to a magazine for a power-driven driving tool for receiving pins or nails, in particular headless pins or nails, with a guide channel which is formed by spaced side walls, a bottom and a top wall, the top wall adapting to the length the pins or nails can have a different height with respect to the bottom wall, and a feeder loaded by a spring, which pushes the pins or nails in the guide channel to a shot channel in the muzzle tool of the driving tool.

In conventional driving tools, the driving plunger, which drives the fastener into a workpiece, is included Spring force, electrically or pneumatically operated. The fastening means, for example staples, nails or pins, are usually stored in a magazine in strip form and fed to the driving or firing channel by means of a pusher. The magazines are mostly elongated bodies which have a guide channel on the inside which is roughly adapted to the profile of the fastening means. In the case of nails or pens, a correspondingly narrow guide channel is provided, along which they are moved by the feeder. If possible, the nails or pencils are not only guided from below, but also from above. In the case of nails or pencils of different lengths, however, a corresponding change in the height of the guide is required, which can be achieved by appropriate manipulations on the magazine.

In the magazine mentioned at the beginning, a rail forming the ceiling wall of the guide channel is suspended in a height-adjustable manner. A rod that can be actuated by means of a button and can be locked in different height positions is connected to the rail and must be adjusted for a different nail or pin length. In the known concept, only relatively large jumps for pin lengths can be permitted. The control button protrudes relatively far from the upper rivet of the magazine upwards and can impair the handling of the driving tool (DE-OS 27 43 906).

A magazine for a driving tool has also become known, in which a permanently installed guide with headed nails can accommodate two different lengths (DE-OS 29 26 881). The well-known magazine is not suitable for headless nails or pens.

The invention is therefore based on the object of providing a magazine for a power-driven driving tool which also accepts headless pins, nails or the like of different lengths without the magazine having to be manipulated.

This object is achieved in that a side wall is formed by a longitudinal surface of at least one lamella, which is mounted in the upper region of the guide channel along an axis transverse to the longitudinal axis of the guide channel and is preloaded by means of a spring in the direction of the other side wall, one cover rail forming lateral boundary is guided by means of a rail guide on the magazine in the longitudinal direction of the guide channel and in a retracted position releases the guide channel for loading from the side and the rail guide and the cover rail are designed such that, in the closed front position of the cover rail, the longitudinal surface of the lamella either abuts or is at a short distance from the other side wall or at the upper ends of the nails or pins and in the partially or fully opened rear Position the lamella is at a distance from the other side wall that is larger than the diameter of the shaft or the head of the pins or nails.

The magazine according to the invention is loaded from the side when the cover rail is open. When moving from the closed position to the open or in the opposite direction, the cover rail performs a lateral movement approximately parallel to itself. In the upper area of the guide channel, an area of the side wall is formed by at least one lamella, which is biased in the direction of the other side wall by means of a spring. If there is no nail in the guide channel, the lamella lies against the other side wall or is at a short distance from it when the cover rail is in the front closed position. In the partially or fully open position of the cover rail, on the other hand, there is a distance between the lamella and the other side wall, the distance being dimensioned such that it is larger than the head or the diameter of the Shank of the nail or pin to be picked up, the underside of the lamella thus represents an upper guide for nails or pins, the length of which corresponds approximately to the height of the guide channel to the underside of the lamella. If the length of the nail or the pin is greater, the lamella is automatically pushed back against the spring by the upper ends of the nails or pins when the cover rail is closed, so that a guide surface located above the lamella takes over the upper guidance. With only one lamella, automatic adaptation to nails or pins of two different length levels is obtained in this way. If, for example, three slats lying one above the other are used, an adjustment to four pin lengths can be made. It goes without saying that the thickness of the lamellae is chosen so that an adaptation to standard pin or nail lengths is achieved.

The cover rail is expediently held by an elongate support part connected to the driving tool.

The lamella can be mounted in the supporting part or in the cover rail. The arrangement of the slats in the cover rail is preferable. For this purpose, according to one embodiment of the invention, the slat is in a guide in the cover rail. The guide has a guide recess which is open to the guide channel, the upper guide wall approximately abutting the other wall of the guide channel. In addition, the slats are mounted so that they can move to a limited extent so that their wall surface facing the guide channel is flush with the upper guide surface when the cover rail is in its fully or partially open position.

The lamella has limited lateral mobility. A simple guide can consist in the fact that two spaced elongated holes are formed in the lamella, through which pins pass. The slats can be formed from metal or plastic. The spring acting on the slats is, for example, a leaf or bar spring. In the case of metal slats, the leaf spring is a separate component that is fastened to the slat using suitable fastening means. If, on the other hand, the lamella is molded from plastic, the leaf spring can be molded in one piece.

In one embodiment of the invention, the cover rail is approximately C-shaped in cross section. Their free edges slide in the upper and lower grooves of a carrier component. So that the lateral movement of the C-shaped cover rail described above can be achieved Provide the grooves over their greater length with a width which is greater than the thickness of the edges of the cover rail which engage in the grooves. However, the grooves have a laterally offset section near the firing channel. Furthermore, the front and rear ends of the free edges of the cover rail have thickened sections, the thickness of which corresponds approximately to the width of the grooves. The thickened sections ensure that the cover rail is axially guided laterally in the carrier component. In the fully or partially open position, the front thickened sections therefore ensure that the lamella is at the distance described above from the other wall. In the closed position, the front thickened sections migrate into the offset groove section and the rear thickened sections enter the guide grooves, so that the described lateral offset of the cover rail thereby occurs and the lamella approaches the whole of the opposite guide channel wall. If, on the other hand, there is a nail in the area of a lamella, the lamella rests resiliently against the nail.

The lower guide for the nails or pins is preferably formed by a lateral extension of the carrier component. On this side approach, a guide bar for the reverse U-shaped pusher can also be used to be appropriate.

In the case of escapements in the lower area of the driving channel, it is advantageous if the rear section of the mouth tool is connected to the cover rail in the lower area. Moving the cover rail backwards frees the lower area of the drive channel. The jammed fastener can be removed. In order that a fastener clamped in the upper region of the driving channel can be released, one embodiment of the invention provides that the carrier component is guided at the front end by means of a relatively short guide part attached to the muzzle tool and can be fastened to the muzzle tool with a screw. The carrier component is also fastened in the rear component by means of a further screw which is passed through an elongated hole in the carrier component. If the two screws mentioned are loosened, the carrier component can be pulled back a short distance and thus free the upper area of the drive channel.

The magazine according to the invention can be used for nails or pens with or without a head. In the case of pencils or nails with a head, the wall section opposite the lamella preferably has a recess which extends extends over the length of the guide channel.

• Fig. 1 zeigt eine Seitenansicht eines Eintreibgeräts mit einem Magazin nach der Erfindung.
• Fig. 2 zeigt die gleiche Ansicht wie Fig. 1 bei teilweise geöffnetem Magazin.
• Fig. 3 zeigt einen Schnitt durch die Darstellung nach Fig. 1 entlang der Linie 3-3.
• Fig. 4 zeigt einen Schnitt durch die Darstellung nach Fig. 2 entlang der Linie 4-4.
• Fig. 5 zeigt eine ähnliche Darstellung wie Fig. 2, jedoch mit beladenem Magazin.
• Fig. 6 zeigt einen Schnitt durch die Darstellung nach Fig. 1 entlang der Linie 6-6.
• Fig. 7 zeigt einen Schnitt durch die Darstellung nach Fig. 5 entlang der Linie 7-7.
• Fig. 8 zeigt einen ähnlichen Schnitt wie Fig. 6, jedoch für Nägel mit Köpfen.
• Fig. 9 zeigt einen ähnlichen Schnitt wie Fig. 7, jedoch für Nägel mit Köpfen.
• Fig. 10 zeigt eine Draufsicht auf eine Lamelle für das erfindungsgemäße Magazin aus Metall.
• Fig. 11 zeigt eine andere Ausführungsform einer Lamelle für das erfindungsgemäße Magazin aus Kunststoff.
• Fig. 12 zeigt eine Draufsicht auf das Gerät nach Fig. 2 in Richtung des Teils 12 unter Weglassung von allen Teilen, die nicht zum Magazin gehören.
• Fig. 13 zeigt eine ähnliche Seitenansicht wie Fig. 2, jedoch mit gelöstem Trägerbauteil.

The invention is explained in more detail below with reference to drawings.

• Fig. 1 shows a side view of a driving tool with a magazine according to the invention.
• Fig. 2 shows the same view as Fig. 1 with the magazine partially open.
• Fig. 3 shows a section through the representation of FIG. 1 along the line 3-3.
• FIG. 4 shows a section through the representation according to FIG. 2 along the line 4-4.
• FIG. 5 shows a representation similar to FIG. 2, but with the magazine loaded.
• FIG. 6 shows a section through the representation according to FIG. 1 along the line 6-6.
• FIG. 7 shows a section through the representation according to FIG. 5 along the line 7-7.
• Fig. 8 shows a similar section as Fig. 6, but for nails with heads.
• Fig. 9 shows a similar section as Fig. 7, but for nails with heads.
• 10 shows a plan view of a lamella for the metal magazine according to the invention.
• 11 shows another embodiment of a lamella for the magazine made of plastic according to the invention.
• FIG. 12 shows a plan view of the device according to FIG. 2 in the direction of part 12, with the omission of all parts that do not belong to the magazine.
• FIG. 13 shows a side view similar to FIG. 2, but with the carrier component released.

Before going into the details shown in the drawings, it should be stated that each of the features described is of importance for the invention, either individually or in conjunction with features of the claims.

Fig. 1 shows a compressed air-powered driving tool 15, which has an upper handle part 16, a drive part 17 and a magazine 18. The elongated magazine 18 extends between a mouth tool 19 and a holding part 20 which is connected to the rear end of the handle part 16. In Fig. 2 it can be seen that a cover rail 21 of the magazine 18 is partially pushed back. A nose 22 on the cover rail 21 can be seen at the upper rear end, which cooperates with a lock on the holding part 20, which is actuated by a locking lever 23. Such a lock is known, however, and will not be described further below. An elongated carrier component 24 can also be seen from FIG. 2.

The structure of the magazine 18 can be seen in more detail from the sectional representations according to FIGS. 3, 4, 6 and 7. The carrier component 24, which is constricted in the middle at 25 to save material, has an upper groove 26a and a lower groove 26b. The cover rail 21 is C-shaped in section. Their inwardly bent free edges 27a, 27b engage in the grooves 26a, 26b. The thickness of the free edges 27a, 27b is considerably smaller than the width of the nuts 26a, 26b. The legs of the cover rail 21 lie against the parts of the carrier component 24 lying within the rail, so that the rail 21 transversely to the side movement The longitudinal axis relative to the carrier component 24, as shown in FIGS. 3 and 4, is guided by the carrier component.

The carrier component 24 has on the lower section lying in the rail 21 an extension 28 on which a guide bar 29 is attached. As can be seen in particular from FIGS. 6 and 7, an inner surface 30 forms the side wall of a guide channel for pins 31. The lower limit of the guide channel is provided by the upper surface of the extension 28. In the lower region, the guide channel is on the side opposite the surface 30 limited by the facing surface of the guide bar 29. An inverted U-shaped pusher 32 rests on the guide bar and interacts with a spring in a manner not described. The inner leg of the pusher 32 engages the rear pin 31.

In the upper region of the cover rail 21, a guide component 33 is fastened on the inside in a manner not shown in detail. On average, it is a lying U-profile, with the recess facing the guide channel. A packet of three slats 34 with a rectangular cross section is stored in the recess. The structure of the slats is shown in Figures 10 and 11 in more detail. 10 shows a lamella 34a made of metal and Fig. 11 shows a lamella 34b made of plastic. The fins 34a, 34b are flat bars with a rectangular cross-section over most of their length. At the ends they are recessed at 35a and 35b. An attachment 36a or 36b adjoins the recess. Elongated holes 37a and 37b are formed in lugs 36a and 36b, respectively. Rod springs 38a and 38b are arranged in the recesses. The bar spring 38a is fastened by welding or by riveting or by means of a screw. The bar spring 38b is formed in one piece with the lamella 34b. A guide pin extends through the elongated holes 37a and 37b on the Eden, which is shown in broken lines at 39 in FIGS. 3, 4 and 6. The pins 34 are connected to the legs of the guide part 33. The bar springs 38 of the slats 34 are supported on the bottom of the recess and therefore press the slats 34 in the direction of the opposite guide channel wall 30. The elongated holes 37 limit the end position. In this, the longitudinal surfaces 40 of the lamellae 34, which face the guide channel, are aligned with the end face of the upper leg 41 of the guide part 33 can. According to the illustration according to FIGS. 3 and 6, the two parts are maximally displaced towards one another. This is in accordance with the closed cover rail 21 Fig. 1 the case. In Fig. 4 cover rail 21 and support member 24 are at a maximum distance from each other. This is the case with the cover rail 21 partially open according to FIG. 2.

An alternative embodiment of the magazine described above is shown in FIGS. 8 and 9. The sectional representations are the same as those shown in FIGS. 6 and 7, and insofar as parts are shown the same reference numbers are used. The only difference in FIGS. 8 and 9 is that a recess 30a is formed in the upper region of the guide channel wall 30 and extends over the length of the carrier component 24. The recess partially receives the head of a nail 42. The depression 30a prevents nails from being tilted with heads.

From Fig. 12 it can be seen that a stop 50 is attached to the top of the cover rail 21 at the front end, which interacts with a rear stop 58 at the lower end of the holding part 20 and limits a displacement of the cover rail 21 to the rear. As can be seen from FIG. 7, the stop 50 has a section 51 with which it projects into the groove 26a. The total width of section 51 and free edge 27a of the cover rail 21 corresponds approximately to the width of the Groove 26a. It can be seen from FIGS. 2 and 5 that the lower rear section 52 of the mouth tool 19 is firmly connected to the cover rail 21. From Fig. 7 it can be seen that a projection 53 is formed in one piece with the tool section 52, which engages in the lower groove 26b. The total width of shoulder 53 and free edge 27b or their thickness corresponds approximately to the width of groove 26b. 12 also shows that the free edges 27a, 27b are thickened on the inside at the rear end, as shown in dashed lines at 54. The groove 26a has a wider oblique section 55 at the front end which opens into an axially parallel end section 56 which is freely open to the side.

In the position of the cover rail 21 shown in FIGS. 2 and 12, there is an arrangement of the cover rail 21 in accordance with the sectional view according to FIG. 4. All the slats 34 are at the same distance from the opposite wall 30 Bring closed position, the groove portions 55, 56 of the grooves 26a and 26b and the thickened portions 54 at the rear end cause the cover rail 21 is moved laterally parallel to itself by a certain amount. This position can be seen in Fig. 3. The fins 34 rest on the wall 30.

When the cover rail 21 is completely open, a pin strip 31 can be inserted into the magazine. This can be seen in FIG. 7. The distance of the lamellae 34 from the wall 30 is approximately one and a half to two times the diameter of the pins 30. After the loading, the rail 21 is pushed forward again. Because of the distance of the lamellae 34 from the pins 31, this can be done without obstacle. At the moment when the cover rail 21 carries out the transverse movement described above, the lamellae lie against the nails, to the extent that they are grasped by the nails. 6, the length of the pins 31 corresponds to the height of the guide channel up to approximately the underside of the upper lamella 34. The lower two lamellae are therefore pressed inwards into the recess of the guide part 33 by the diameter of the pins 31. In this way, the nails of the two lower slats are guided laterally and through the upper slat 34 from above. In the illustrated embodiment, the thickness of the slats can be 3 mm. Pin lengths of 12, 15, 18 and 21 mm can then be processed with the driving tool shown. Manipulation in the magazine when changing the pin lengths in accordance with the specified values is therefore not necessary.

The carrier component 24 abuts on the inside against the mouth tool 19 and screwed to it with the aid of a screw 56. If the screw 56 is loosened and a further screw in the area of the holding part 20, the carrier component 24 can be pulled backwards by an amount, as is shown in FIG. A pin guide 57 for the carrier component can be seen, which interacts with a bore in the carrier component 24. A screw connected to the holding part 20 extends through an elongated hole (not shown) of the carrier component, which enables the described displacement. In the arrangement of the carrier component shown in FIG. 13, the drive channel (not shown) of the mouth tool 19 is freely accessible in order to remove clamped fastening means.

Claims (15)

1. Magazine for a power-driven driving tool for receiving pins or nails, in particular headless pins or nails, with a guide channel which is formed by spaced side walls, a bottom and a top wall, the top wall for adaptation to the lengths of the pins or nails can have a different height with respect to the bottom wall and a feeder loaded by a spring which advances the pins or nails in the guide channel to a firing channel in the mouth tool of the driving tool, characterized in that a side wall is formed by a longitudinal surface of at least one lamella (34), which in the upper region of the guide channel is mounted to be movable to a limited extent along an axis transverse to the longitudinal axis of the guide channel and is prestressed in the direction of the other side wall (30) by means of a spring (38, 38a, 38b) Rail guide (26a, 26b) guided on the magazine (18) is and in a retracted position releases the guide channel for loading from the side and the rail guide and the cover rail (21) are designed such that in the closed front position of the cover rail (21) the longitudinal surface of the lamella (34) either bears against the other side wall (30) or has a small distance from it or bears against the upper ends of the nails (42) or pins (31) and in the partially or fully open rear position the lamella (34) has a distance from the other side wall (34) which is larger than the diameter of the shaft and the head of the pins (31) or nails (42). 2. Magazine according to claim 1, characterized in that the lamella (34) is mounted in the cover rail (21). 3. Magazine according to claim 1 or 2, characterized in that the lamella (34) is mounted in a guide part (33) in the cover rail (21) and their longitudinal surface facing the guide channel is approximately aligned with a wall surface of the guide (33, 41) when the cover rail (21) is in its fully or partially open position. 4. Magazine according to one of claims 1 to 3, characterized in that in the lamella (34a, 34b) two spaced elongated holes (37a, 37b) are formed, through which pins (39) are passed. 5. Magazine according to one of claims 1 to 4, characterized in that the lamella (34a) is formed from metal and is provided at the ends facing away from the guide channel with leaf springs (38a). 6. Magazine according to one of claims 1 to 4, characterized in that the lamella (34b) is molded from plastic with which a leaf spring (38b) or the like is integrally formed on the side facing away from the guide channel. 7. Magazine according to one of claims 1 to 6, characterized in that the cover rail (21) is approximately C-shaped in cross-section and with the free edges (27a, 27b) in grooves (26a, 26b) of a carrier component (24) is. 8. Magazine according to claim 7, characterized in that the grooves (26a, 26b) have over their greater length a width which is greater than the thickness of the C-shaped cover rail (21) at the free edges, the grooves (26a, 26b) near the firing channel have a section (55, 56) laterally offset with respect to the cover rail (21) and sections (51, 53, 54) thickened at the front and rear ends at the free edges (27a, 27b) of the cover rail (21) are arranged, the thickness of which approximately corresponds to the width of the grooves (26a, 26b). 9. Magazine according to claim 7 or 8, characterized in that the carrier component (24) has a lateral extension (28) on which the lower ends of the pins or nails stand up. 10. Magazine according to claim 9, characterized in that on the extension (28) a guide bar (29) for the reverse U-shaped pusher (32) is attached. 11. Magazine according to one of claims 7 to 10, characterized in that the carrier component (24) at the front end by means of a relatively short, attached to the mouth tool (19) guide part (57) and with the aid of a screw (56) on the mouth tool ( 19) can be fastened and the carrier component (24) is fastened in the rear region by means of a further screw which is passed through an elongated hole in the carrier component (24). 12. Magazine according to one of claims 1 to 11, characterized in that the rear section (52) of the mouth tool (19) is connected to the cover rail (21). 13. Magazine according to one of claims 1 to 12, characterized in that the side wall section (30) opposite the lamellae (34) has a depression (30a) which extends over the length of the guide channel. 14. Magazine according to one of claims 8 to 13, characterized in that a at the front end on the cover rail (21) attached stop (50), which interacts with a rear stop of the magazine, with a section (51) in the groove (26a) stretched in to form the upper front thickened portion. 15. Magazine according to claim 8 and 12, characterized in that a section (53) of the mouth tool (52) extends into the lower groove (26b) to form the front lower thickened section.

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