EP0232474B1 - Agrafeuse motorisée - Google Patents

Agrafeuse motorisée Download PDF

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Publication number
EP0232474B1
EP0232474B1 EP19860115501 EP86115501A EP0232474B1 EP 0232474 B1 EP0232474 B1 EP 0232474B1 EP 19860115501 EP19860115501 EP 19860115501 EP 86115501 A EP86115501 A EP 86115501A EP 0232474 B1 EP0232474 B1 EP 0232474B1
Authority
EP
European Patent Office
Prior art keywords
tacker
trigger
feeler
workpiece
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19860115501
Other languages
German (de)
English (en)
Other versions
EP0232474A3 (en
EP0232474A2 (fr
Inventor
Manfred Dipl.-Ing. Buck
Wilfried Dipl.-Ing. Kabatnik
Siegfried Fehrle
Wolfgang Dipl.-Ing. Schmid
Martin Hölzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0232474A2 publication Critical patent/EP0232474A2/fr
Publication of EP0232474A3 publication Critical patent/EP0232474A3/de
Application granted granted Critical
Publication of EP0232474B1 publication Critical patent/EP0232474B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/10—Driving means
    • B25C5/15—Driving means operated by electric power

Definitions

  • the invention relates to a tacker with power drive according to the type of the main claim (see e.g. US-A-4550643).
  • Tackers are known in which the strength of the driving impact can be adjusted so that multiple strokes on one and the same tack are not necessary. If an operator is used by other known staple guns (eg according to DE-OS 32 32 137) that he can trigger lookups without a new staple being separated from the staple package, there is a risk that he will do so with a staple gun according to the present invention tries. However, because emphasis is placed on other advantages in use, such double strikes are sources of error. On the second stroke, a new tack is cut off and wrapped. That looks ugly. The second tack can jam in the tack channel and in extreme cases damage to the stapler.
  • the invention is defined in claim 1.
  • the tacker according to the invention with the characterizing features of the main claim has the advantage of reliably preventing two fastening means from striking one another without reducing the advantages of a free-kick protection according to the type of the main claim.
  • the repeat lock connected to the button forces the operator to change the point of impact by lifting the tacker off the workpiece.
  • the quick setting of a number of stapling devices can therefore be carried out without inhibition even with the actuating handle being constantly operated.
  • FIG. 1 An embodiment of the subject of the invention is shown in the drawing and explained in more detail in the following description.
  • the figure shows a partial longitudinal section through a tacker designed according to the invention.
  • a tacker 1 contains in a housing 2 a magnetic coil 3 for a plunger magnet 4, a circuit board 5 with switching electronics and a driver 6.
  • a driver 7 connects the immersion magnet 4 with the driver 6 so that the immersion magnet 4 can drive the driver 6 in the driving direction.
  • a return spring 8 is pushed onto the immersion magnet 4 and is supported on the one hand on an end face of the magnet coil 3 on the driver 7.
  • a guide rod 9 gives the immersion magnet 4 safe guidance. For this purpose, it is held in bearings 10 and 11 in housing 2.
  • the lower end of the driver 6 in the illustration according to the figure can be moved in a channel 12 in the head 13 of a staple magazine 14. A nose 15 of the head 13 projects beyond the underside of the tacking magazine 14.
  • a tab 16 on the tacking magazine 14 has an elongated hole 17. With this elongated hole 17, the tacking magazine 14 is hung over a housing-side hub 18, which at the same time has a threaded hole 19. One of the screws which hold the two shells of the housing 2 of the tacker 1 together can be screwed into this threaded hole 19. These screws are designated by 20 and are shown at four further locations of the housing 2 in the figure.
  • the stapling agent magazine 14 At its end facing away from the head 13, has a tab 21 which engages in a housing pocket 22 and together with it can form a joint. The staple magazine 14 can be pivoted about this joint, as indicated by an arrow 23.
  • a helical spring 25 is inserted, the end protruding from the recess 24 is supported on the magazine magazine 14. So that the helical spring 25 cannot slip on the support surface, a nose 26 is bent out of the housing of the tacking magazine 14. It engages in the interior of the coil spring 25.
  • the preloaded coil spring 25 is looking for so always apply the staple magazine 14 with the upper edge of the elongated hole 17 to the hub 18.
  • a lever arm 27 of an angle lever 28 also bears against the same surface of the stapling magazine 14 against which the coil spring 25 bears. This angle lever 28 is supported on a bolt 29 in the housing 2. It has a bent end 30.
  • the lever arm 27 emerges from this housing 2 through a corresponding opening in the housing 2.
  • the angle lever 28 can, as the figure shows, be moved to the left when the tacking magazine 14 is pressed onto the housing 2.
  • This angle lever 28 there is an end 31 of a transmission member 32.
  • the transmission member 32 is articulated to a handle 33 for triggering a driver blow.
  • This handle 33 in turn is pivotally supported in a trough 34 in the housing 2. It is supported by a helical spring 35 in a bearing 36 fixed to the housing.
  • this bearing 36 is part of a receptacle 37 for an electrical component 38.
  • a device 39 for fixing a power cable 40 which is inserted into the housing 2 through an opening 41 in the latter.
  • the end of this power cable 40 is passed through a bridge 42 from the handle part of the housing 2 to the lower part of the housing 2 and connected to the circuit board 5 with its individual wires.
  • the board 5 carries, in addition to terminals 43 and 44, an axis 45 for an adjusting button 46. With it, the strength of the driver's stroke can be adjusted. Details of this are unimportant for understanding the invention.
  • the board 5 also carries a trigger 47 with which the supply circuit for the solenoid 3 can be closed. For this purpose, insulated wires 48 and 49 are guided from the circuit board 5 to the magnetic coil 3.
  • the trigger 47 has a nose 50 with an inclined contact surface 51.
  • a first projection 52 is intended to cooperate with the nose 50 of the trigger 47 and has one for Chamfer chamfer 51 matching chamfer chamfer.
  • the second projection 53 is opposed to the bent end 30 of the angle lever 28.
  • a leaf spring 55 is inserted, the free end resiliently pressing against the transmission member 32. The leaf spring 55 always seeks to keep the transmission member 32 with its end 31 away from the trigger 47.
  • the staple magazine 14 is loaded with staples in a known manner and the power cable 40 is connected to the network.
  • the nose 15 of the staple magazine 14 is pressed onto a workpiece and the force of the coil spring 25 is overcome with this pressing force.
  • the staple magazine 14 lies against the lower edge 56 of the housing 2.
  • the angle lever 28 is pivoted counterclockwise around its bolt 29.
  • the end 30 of the angle lever 28 presses the end 31 of the transmission member 32 so far towards the trigger 47 that the first projection 52 comes to rest with its contact surface in front of the bevel 51 of the nose 50 of the trigger 47. If you now operate the handle 33 against the action of the helical spring 35, the transmission member 32 is pulled in the direction of an arrow 57 with this handle 33.
  • the second projection 53 runs at the end 31 of the transmission member 32 at the end 30 of the angle lever 28, while the first projection 52 of the end 31 takes the trigger 47 with it over the nose 50. So that the trigger 47 is moved to the position in which it applies voltage to the solenoid 3.
  • the helical spring 25 presses the staple magazine 14 away from the housing 2, whereby it is pivoted about the joint 21/22.
  • the leaf spring 55 presses on the transmission member 32 on the angle lever 28 so that it rotates in the clockwise direction with its lever arm 27 on the stapling agent magazine following its actuating movement.
  • the end 31 of the transmission member 32 also withdraws from the release 47 so far that it opens the supply circuit for the solenoid again.
  • the tacking magazine 14 presses the transfer member 32 against the trigger 47 again via the angle lever 28 and brings it back into the switched-on position.
  • the solenoid 3 causes a new driver blow. In this way, a number of stapling agents can be set in quick succession. The operator need not let go of the handle 33.
  • a repeat lock is used. It works when the staple gun 1 remains attached to a workpiece and the Handle 33 is operated a second or more times.
  • the transmission element 32 is provided with a latching recess 59. This locking recess 59 is assigned a locking lug 60 on the housing wall 58 adjacent to the transmission element 32.
  • the lever 28 presses the transmission member 32 towards the housing wall 58. If the handle 33 is now brought into the release position, the locking recess 59 engages over the locking lug 60 under the pressure of the angle lever 28. Up to the locking position, the transmission member 32 dodges the locking lug 60 by its own spring. If the handle 33 is now released, it will not return to its starting position and ready position for a new stroke as long as the angle lever 28 holds the transmission member 32 in the latched position. If the staple gun 1 is lifted from the workpiece, the pressure of the angle lever 28 on the transmission member 32 is released. The leaf spring 55 can push the transmission member 32 away from the housing wall 58 and thus release the latching connection 59/60. Now the handle 33 and the transmission link 32 move back into their rest position and are then ready for a new release movement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (3)

  1. Agrafeuse avec un moteur, qui est réglable à différentes forces de frappes, avec une sécurité anticoup libre, qui comprend un dispositif avec une poignée (33) pour déclencher un coup d'agrafeuse et un palpeur (15) qu'on peut déplacer sur une pièce pour la mise en place de l'agrafeuse, à laquelle est adapté un blocage (59,60) antirépétition de coups, qu'on ne peut déverrouiller qu'en soulevant l'agrafeuse (1) de la pièce, agrafeuse caractérisée en ce qu'elle présente un aimant plongeant (4) entraîné électriquement par une bobine d'induction (3) et un déclencheur (47) disposé dans le circuit d'alimentation en courant de la bobine d'induction (3), et en ce qu'aussi bien la poignée (33) que le palpeur (15) agissent sur un levier mobile en rotation (28), qui coopère avec le déclencheur (47).
  2. Agrafeuse selon la revendication 1, caractérisée en ce que le palpeur (15) est relié à un organe (32) du dispositif de déclenchement qui comprend la poignée de commande (33), pour maintenir ce dispositif dans sa position de déclenchement, tant que l'agrafeuse (1) avec le palpeur (15) reste en contact avec une pièce et pour empêcher ainsi un retour du déclencheur (47) et ensuite un nouveau déclenchement d'un coup d'agrafeuse.
  3. Agrafeuse selon la revendication 2, caractérisée en ce que le palpeur (15) est relié par un magasin d'agrafes (14) et un levier coudé (28) à un organe de transmission (32) en relation de transmission de la poignée de commande (33) à un déclencheur (47), de sorte que cet organe de transmission (32) puisse s'encliqueter par une encoche (59) placé sur lui, sur un cliquet d'arrêt (60) solidaire du boîtier, du moment qu'on enfonce la poignée de commande (33) et que l'agrafeuse (1) repose encore sur une pièce.
EP19860115501 1985-12-07 1986-11-08 Agrafeuse motorisée Expired - Lifetime EP0232474B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853543375 DE3543375A1 (de) 1985-12-07 1985-12-07 Tacker mit kraftantrieb
DE3543375 1985-12-07

Publications (3)

Publication Number Publication Date
EP0232474A2 EP0232474A2 (fr) 1987-08-19
EP0232474A3 EP0232474A3 (en) 1988-12-21
EP0232474B1 true EP0232474B1 (fr) 1992-03-04

Family

ID=6287954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860115501 Expired - Lifetime EP0232474B1 (fr) 1985-12-07 1986-11-08 Agrafeuse motorisée

Country Status (3)

Country Link
EP (1) EP0232474B1 (fr)
JP (1) JPH072314B2 (fr)
DE (2) DE3543375A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575455A (en) * 1945-12-12 1951-11-20 Bocjl Corp Impact tool
DE2443544A1 (de) * 1974-09-11 1976-03-25 Reich Maschf Gmbh Karl Ausloesesicherung fuer nagelgeraete
US4189080A (en) * 1978-02-23 1980-02-19 Senco Products, Inc. Impact device
US4260092A (en) * 1979-07-02 1981-04-07 Duo-Fast Corporation Safety assembly for a tool for driving fasteners
IT7904909V0 (it) * 1979-08-09 1979-08-09 Fasco Srl Meccanismo di scatto per pistola chiodatrice a valvola in testa
US4449660A (en) * 1981-04-30 1984-05-22 Black & Decker Inc. Fastener tool
GB2117692B (en) * 1982-02-11 1985-01-23 Black & Decker Inc Latching arrangement for a power-driven tacker
DE8303460U1 (de) * 1983-02-08 1983-06-16 Black & Decker, Inc., 19711 Newark, Del. Verriegelungsvorrichtung für einen kraftgetriebenen Tacker
DE3337278A1 (de) * 1983-10-13 1985-04-25 Metabowerke GmbH & Co, 7440 Nürtingen Eintreibgeraet
DE3341980A1 (de) * 1983-11-21 1985-07-04 Hilti Ag, Schaan Druckluftnagler
US4550643A (en) * 1984-05-02 1985-11-05 Duo-Fast Corporation Fastener driving tool

Also Published As

Publication number Publication date
EP0232474A3 (en) 1988-12-21
EP0232474A2 (fr) 1987-08-19
JPH072314B2 (ja) 1995-01-18
DE3543375A1 (de) 1987-06-11
DE3684136D1 (de) 1992-04-09
JPS62136381A (ja) 1987-06-19

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