[go: up one dir, main page]

WO2005051606A1 - Hand-held drilling and screw driving machine - Google Patents

Hand-held drilling and screw driving machine Download PDF

Info

Publication number
WO2005051606A1
WO2005051606A1 PCT/EP2004/052717 EP2004052717W WO2005051606A1 WO 2005051606 A1 WO2005051606 A1 WO 2005051606A1 EP 2004052717 W EP2004052717 W EP 2004052717W WO 2005051606 A1 WO2005051606 A1 WO 2005051606A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotation
output spindle
motor
hand
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.)
Ceased
Application number
PCT/EP2004/052717
Other languages
German (de)
French (fr)
Inventor
Alfred Frech
Wolfgang Hirschburger
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2005051606A1 publication Critical patent/WO2005051606A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like

Definitions

  • the present invention is based on a hand drill screwing machine according to the preamble of claim 1 and according to that of claim 6.
  • this serves to be able to conveniently open or close the drill chuck for holding insert drilling tools or screw bits by hand without tools, without the drill chuck being able to rotate about its own axis.
  • the automatic rotary lock enables the hand drill to be used as a hand-operated tool - by turning it around its own axis in order to drill holes or tighten screws by hand if the electrical power supply and thus the drive fail.
  • the present invention with the features of claim 1 has the advantage that the hand drill screwdriver by hand - without operating the motor - can be used particularly conveniently as a hand tool for drilling or screwing, the hand drill screwdriver not being cumbersome by full rotations due to the selectable adjustable direction of rotation lock their longitudinal axis must be rotated, but pendulum by swiveling back and forth around the longitudinal axis - like a ratchet wrench.
  • ratchet designed as a bit can be used in a known manual screwdriver with automatic spindle lock, which takes effect from the outside when a torque is applied, means that oscillating screwing or drilling as with a ratchet wrench is possible with this machine in a simple manner.
  • the ratchet bit has its own inventive value.
  • FIG. 1 shows a side view of a hand drill
  • FIG. 3 shows the representation according to FIG. 2 when the clockwise rotation is blocked and
  • FIG. 4 shows the representation according to FIG. 2 when both directions of rotation are released.
  • Fig. 5 is a side view of a handheld screwdriver with ratchet bit
  • FIG. 1 shows a side view of a hand drill 10. It has a motor housing 12 consisting of longitudinal shells, which accommodates a motor (not shown) and to which a gear housing 13 is attached on the left in the viewing direction, from which an output spindle 20 emerges in the center at the front and can be driven in rotation by means of the motor.
  • a motor housing 12 consisting of longitudinal shells, which accommodates a motor (not shown) and to which a gear housing 13 is attached on the left in the viewing direction, from which an output spindle 20 emerges in the center at the front and can be driven in rotation by means of the motor.
  • a battery (not shown) is arranged in a pistol-shaped handle 14, which extends angled downward from the motor housing 12 and can be electrically connected to the motor or switched on and off by pressing the switch button 16.
  • switch button 16 Above the switch button 16 is a side-to-side sliding direction switch 18 with which the motor direction of rotation can be switched to the right or left.
  • an adjusting ring 22 is rotatably mounted, with the output spindle 20 being rotatably arrestable in one direction of rotation by rotating through a certain or limited angle of rotation to the left or right and thereby freely in the other direction of rotation is rotatable.
  • the output spindle 20 is designed on the outside as a hexagon and can be used as a socket wrench or can be coupled with an externally pluggable screw bit.
  • the output spindle 20 is also hollow on the inside and designed as a hexagon socket 26 - suitable for internally insertable, externally hexagonal standard screw bits.
  • a direction of rotation lock 30 overlapped by the adjusting ring 22 can be set automatically from any locked position into a neutral position by means not shown, either mechanically coupled to the switch-on button and actuating the locking lever 38 (FIG. 2) or electrically actuated after the motor circuit has been closed. as soon as the output spindle 20 rotates with the motor switched on.
  • the direction of rotation lock 30 is formed from a gear 32, which encompasses the output spindle 20 in a rotationally fixed manner and follows its rotation.
  • the gear wheel 32 carries equally spaced teeth 34 which are spaced apart from one another by regularly following tooth gaps 36.
  • the teeth 34 or tooth gaps 36 are assigned a locking lever 38 which is pivotably mounted about an axis of rotation 40 on the end wall of the gear housing 13 in such a way that it dips into one of the tooth gaps 36 with a first locking tooth 42 and a rotation in the one maximum swivel position of the gear 32 locks clockwise according to the arrow 43.
  • the gear 32 and thus the output spindle 20 can rotate in the opposite direction of rotation according to the arrow 45, because the locking lever 38 can deflect upwards due to the oblique configuration of the right tooth flank of the locking tooth 42 and thus release this direction of rotation.
  • the detent lever 38 can be evaded in that the detent lever 38 is supported with respect to the adjusting ring 22 or with respect to the actuating cam 23 thereof via an arched leaf spring 46, which holds the first locking tooth 42 downward in the blocking direction and a rotation of the gear wheel 32 in the clockwise direction prevented, but is deformed when the gear 32 is rotated in the opposite direction so that the ratchet tooth 42 emerges from the respective tooth gap 36 and dips into the next tooth gap with a snap, so that an audible ratchet effect occurs in the preferred direction.
  • a tension spring 48 is attached with its upper side to the gear housing 13 and with its underside to a projection 50 of the latching lever 38 and tries to keep it in its neutral position, in which both locking teeth 42, 44 are out of engagement with the tooth gaps 36 and thus both directions of rotation release the output spindle 20.
  • the setting ring 22 In the viewing direction below, on the opposite side of the locking lever 38, the setting ring 22 carries a switching cam 52 which engages in a longitudinally displaceable electrical sliding contact 54 and, depending on the setting position of the setting ring 22, a counter contact 56 in the viewing direction on the right or in the other setting position presses on the opposite mating contact 58 and thus causes the electrical direction of rotation of the motor to be switched. This ensures that the motor only rotates in the direction that is released for rotation by the selected position of the locking lever 38.
  • a separate direction of rotation switch 18, as in FIG. 1, is either shut down or not provided.
  • FIG. 3 shows a schematic illustration according to FIG. 2, but with the reverse direction of rotation blocked.
  • the second locking tooth 44 is immersed in a tooth gap 36 and prevents the gear 32 - and thus the output shaft 20 - from rotating counterclockwise. In this case, the clockwise rotation is released according to arrow 45.
  • the sliding contact 54 has come into contact with the mating contact 58 and has been released from the opposite mating contact 56. As a result, the motor or the output spindle 20 can only rotate according to the arrow 45.
  • Fig. 4 shows the locking lever 38 in the neutral position, in which both locking teeth 42, 44 are completely out of engagement with the tooth gaps 36 and thus the gear 32 and the output spindle 20 can be freely rotated in opposite directions of rotation.
  • the leaf spring 46 is curved sinusoidally, so that its concave curvature is positioned close to the center of rotation 40 in the center.
  • the locking ring 22 and its adjusting cams 23 are held in a force-locking manner in one of the three possible adjusting positions by not shown latching means.
  • This holding force can only be overcome by turning the adjusting ring 22 with a minimum force by hand 5 shows a side view of a hand drill screwdriver 60. It has a housing 62, which consists of a motor housing (not shown in more detail) and a gear housing adjoining it to the left in the viewing direction.
  • An output spindle 70 with an internal hexagon 72 emerges from the front in the center and can be driven in rotation by means of the motor.
  • a battery (not shown) is arranged in a pistol-shaped handle 64, which extends angled downward from the housing 12, and which can be electrically connected or switched on and off by actuating the switch key 66 to the motor.
  • switch button 66 is a laterally, transversely to the longitudinal axis of the hand-held screwdriver 60 back and forth sliding direction switch 68 is arranged, with which the motor direction of rotation can be switched to the right or left.
  • a hexagon bit shank 77 is removably inserted into the hexagon socket 72 of the output shaft 70 and carries a chisel 75 of a ratchet bit 74.
  • the ratchet bit 74 carries on its chassis 75 a rotatably mounted adjusting ring 76, with which its output shaft 79 can be locked in one direction of rotation by rotating through a specific or limited angle of rotation to the left or right and can be freely rotated in the other direction of rotation.
  • the output shaft 79 emerges from the center of the ratchet bit 74. It is designed on the outside as a hexagon and can be used as a socket wrench or can be coupled with an externally attachable screw bit.
  • the output shaft 79 is also hollow on the inside and designed as a hexagon socket 80 - suitable for insertable inside, hexagonal standard screw bits on the outside.
  • the respectively releasing direction of rotation of the ratchet 68 is indicated by two opposite direction arrows 82.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drilling And Boring (AREA)

Abstract

A hand-held drilling and screw driving machine comprises a housing (12, 13) and a motor that is housed therein while serving to drive a driven spindle (20). This driven spindle is rotationally mounted inside the housing (12, 13) and can be coupled to insert tools such as drill bits, screwing bits or the like for rotating therewith. The invention is characterized in that the driven spindle (20) is coupled to a selectable rotating direction locking mechanism that, alone, blocks a torque in one direction acting externally upon the driven spindle and releases it in the opposite direction.

Description

HandbohrschraubmaschineHandbohrschraubmaschine

Stand der TechnikState of the art

Die vorliegende Erfindung geht aus von einer Handbohrsclrraubmaschine nach dem Oberbegriff des Anspruchs 1 bzw. nach dem des Anspruchs 6.The present invention is based on a hand drill screwing machine according to the preamble of claim 1 and according to that of claim 6.

Aus GB 233729 ist eine Handbohrschraubmaschine bekannt, deren Abtriebsspin el bei Einwirken eines Drehmoments von außen entgegen der jeweils anliegenden Drehrichtung dreharretiert wird.From GB 233729 a hand drilling screwdriver is known, the driven spindle el of which is locked against rotation in the event of the action of a torque from the outside in the opposite direction of rotation.

Dies dient einerseits dazu, das Bohrfutter zur Aufnahme von Einsatzbohrwerkzeugen o- der Schraubbits werkzeuglos von Hand bequem öffnen bzw. schließen zu können, ohne dass sich dabei das Bohrfutter um die eigene Achse mitdrehen kann. Andererseits ermöglicht die automatische Drehverriegelung ein Benutzen der Handbohrschraubmaschine als handbetätigtes Werkzeug - durch Drehen um deren eigene Achse, um bei Ausfall der elektrischen Stromversorgung und damit des Antriebs Löcher von Hand zu bohren bzw. Schrauben von Hand festzuziehen.On the one hand, this serves to be able to conveniently open or close the drill chuck for holding insert drilling tools or screw bits by hand without tools, without the drill chuck being able to rotate about its own axis. On the other hand, the automatic rotary lock enables the hand drill to be used as a hand-operated tool - by turning it around its own axis in order to drill holes or tighten screws by hand if the electrical power supply and thus the drive fail.

Vorteile der ErfindungAdvantages of the invention

Die vorliegende Erfindung mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass die Handbohrschraubmaschine von Hand - ohne Betrieb des Motors - besonders bequem als Handwerkzeug zum Bohren oder Schrauben benutzt werden kann, wobei durch das wählbar einstellbare Drehrichtungsgesperre die Handbohrschraubmaschine nicht umständlich um volle Umdrehungen um ihre Längsachse gedreht werden muss, sondern pendelbar durch Vor- und Zurückschwenken um die Längsachse - wie ein Ratschenschlüssel - einsetzbar ist.The present invention with the features of claim 1 has the advantage that the hand drill screwdriver by hand - without operating the motor - can be used particularly conveniently as a hand tool for drilling or screwing, the hand drill screwdriver not being cumbersome by full rotations due to the selectable adjustable direction of rotation lock their longitudinal axis must be rotated, but pendulum by swiveling back and forth around the longitudinal axis - like a ratchet wrench.

Dadurch, dass sich das Drehrichtungsgesperre — auch Rastsche genannt - wählbar mit ei- nem Einstellring an der Stirnseite der Handbohrschraubmaschine einstellen läßt, ist dieseThe fact that the direction of rotation lock - also called Rastsche - can be adjusted with an adjusting ring on the front of the hand drill is this

- ohne Motorbetrieb - zum manuellen Schi-aubendrehen, sowohl zum Festdrehen als auch zum Lösen oder zum Bohren einsetzbar.- without motor operation - for manual ski turning, can be used for tightening as well as for loosening or drilling.

Dadurch, dass das Drehrichtungsgesperre beim Einschalten des Motors zunächst automa- tisch neutral eingestellt ist, ist die Gefahr ausgeschlossen, dass die Abtriebsspindel bzw. der Motor durch ungewollte Einschaltung des Drehrichtungsgesperres blockiert wird.The fact that the direction of rotation lock is initially set to neutral when the motor is switched on means that there is no danger that the output spindle or the motor will be blocked if the direction of rotation lock is switched on unintentionally.

Dadurch, dass ein die Motordrehrichtung bestimmender, elektrischer Drehrichtungsumschalter mit den Stellmitteln zur Drehrichtungsvorwahl des Drehrichtungsgesperres ge- kuppelt ist, ist automatisch immer nur die Gegendrelirichtung der jeweils gewählten Motor- bzw. Abtriebsspindeldrehrichtung gesperrt, so dass bei nachlassender Batterieleistung komfortabel mit manueller Unterstützung geschraubt oder gebohrt werden kann.Due to the fact that an electrical direction switch that determines the direction of motor rotation is coupled with the adjusting means for preselection of the direction of rotation lock, only the reverse direction of the respectively selected motor or output spindle direction of rotation is automatically blocked, so that when the battery power drops, you can comfortably screw or drill with manual assistance can be.

Dadurch, dass ein von Ratschen-Schraubenschlüssel bekanntes Drehrichtungsgesperre in die Handbohrschraubmaschine eingebaut ist, kann auf ein kompliziertes Autolock-Sy- stem - wie beispielsweise aus GB 233729 bekannt verzichtet werden — und statt dessen auf ein kostengünstig zu fertigendes, bereits als Baugruppe vorhandenes System zurückgegriffen werden. Dadurch ist eine hochwertige Handbohrschraubmaschine besonders kostengünstig herstellbar.The fact that a direction of rotation lock known from ratchet wrenches is installed in the hand drill screwdriver means that a complicated Autolock system - as is known, for example, from GB 233729 - can be dispensed with and instead a system that is already available as an assembly and can be manufactured cost-effectively become. This means that a high-quality hand-held screwdriver can be manufactured particularly cost-effectively.

Dadurch, dass in eine bekannte Handschraub-Bohrmaschine mit automatischer Spindelarretierung, die bei Einwirken eines Drehmoments von außen wirksam wird, eine als Bit ausgestaltete Ratsche einsetzbar ist, ist auf einfache Weise ein pendelndes Schrauben oder Bohren wie mit einem Ratschenschlüssel mit dieser Maschine möglich.The fact that a ratchet designed as a bit can be used in a known manual screwdriver with automatic spindle lock, which takes effect from the outside when a torque is applied, means that oscillating screwing or drilling as with a ratchet wrench is possible with this machine in a simple manner.

Somit kommt dem Ratschen-Bit ein eigener erfinderischer Wert zu.Thus the ratchet bit has its own inventive value.

Zeichnung Nachstehend ist die Erfindung an Hand eines Ausführungsbeispiels mit zugehöriger Zeichnung näher erläutert.drawing The invention is explained in more detail below on the basis of an exemplary embodiment with the associated drawing.

Es zeigen Fig. 1 eine Seitenansicht einer Handbohrschraubmaschine,1 shows a side view of a hand drill,

Fig. 2 einen Querschnitt des Drehrichtungsgesperres mit gesperrter Links- und freier Rechtsdrehung,2 shows a cross section of the direction of rotation lock with locked left and free right rotation,

Fig. 3 die Darstellung gemäß Fig. 2 bei gesperrter Rechtsdrehung und Fig. 4 die Darstellung gemäß Fig. 2 bei Freigabe beider Drehrichtungen. Fig. 5 eine Seitenansicht einer Handboliτschraubmaschine mit Ratschenbit3 shows the representation according to FIG. 2 when the clockwise rotation is blocked and FIG. 4 shows the representation according to FIG. 2 when both directions of rotation are released. Fig. 5 is a side view of a handheld screwdriver with ratchet bit

Beschreibung des AusführungsbeispielsDescription of the embodiment

In Fig. 1 ist eine Seitenansicht einer Handbohrschraubmaschine 10 dargestellt. Sie hat ein aus Längsschalen bestehendes Motorgehäuse 12, das einen nichtdargestellten Motor aufnimmt und an das in Betrachtungsrichtung links ein Getriebegehäuse 13 angesetzt ist, aus dem vorn mittig eine Abtriebsspindel 20 austritt, die mittels des Motors drehend antreibbar ist.1 shows a side view of a hand drill 10. It has a motor housing 12 consisting of longitudinal shells, which accommodates a motor (not shown) and to which a gear housing 13 is attached on the left in the viewing direction, from which an output spindle 20 emerges in the center at the front and can be driven in rotation by means of the motor.

Dazu ist in einem pistolenformigen Handgriff 14, der sich vom Motorgehäuse 12 nach unten abgewinkelt erstreckt, ein nicht dargestellter Akku angeordnet, der durch Betätigen der Schalttaste 16 mit dem Motor elektrisch verbindbar bzw. ein- und ausschaltbar ist.For this purpose, a battery (not shown) is arranged in a pistol-shaped handle 14, which extends angled downward from the motor housing 12 and can be electrically connected to the motor or switched on and off by pressing the switch button 16.

Oberhalb der Schalttaste 16 ist ein seitlich hin- und herschiebbarer Drehrichtungsschalter 18 angeordnet, mit dem die Motordrehrichtung nach rechts bzw. links umschaltbar ist.Above the switch button 16 is a side-to-side sliding direction switch 18 with which the motor direction of rotation can be switched to the right or left.

An der Stirnseite des Gerriebegehäuses 13, die Abtriebsspindel 20 umgreifend, ist ein Einstellring 22 drehbar gelagert mit dem durch Drehen um einen bestimmten bzw. begrenzten Drehwinkel nach links oder rechts die Abtriebsspindel 20 jeweils in einer Dreh- richtung dreharretierbar und dabei in der anderen Drehrichtung frei drehbar ist.On the front side of the transmission housing 13, encompassing the output spindle 20, an adjusting ring 22 is rotatably mounted, with the output spindle 20 being rotatably arrestable in one direction of rotation by rotating through a certain or limited angle of rotation to the left or right and thereby freely in the other direction of rotation is rotatable.

Die Abtriebsspindel 20 ist außen als Sechskant gestaltet und als Steckschlüssel einsetzbar bzw. mit einem außen aufsteckbaren Schraubbit kuppelbar. Die Abtriebsspindel 20 ist außerdem innen hohl und als Innensechskant 26 ausgestaltet - passend für innen ein- steckbare, außen sechseckige Normschraubbits. Ein vom Einstellring 22 übergriffenes Drehrichtungsgesperre 30 ist über nicht dargestellte, entweder mechanisch mit der Einschalttaste gekoppelte und den Rasthebel 38 (Fig. 2) betätigende oder nach Schließen des Motor-Stromkreises elektrisch betätigte Mittel au- tomatisch aus einer beliebig eingestellten Sperrposition in Neutralposition einstellbar, sobald sich bei eingeschaltetem Motor die Abtriebsspindel 20 dreht.The output spindle 20 is designed on the outside as a hexagon and can be used as a socket wrench or can be coupled with an externally pluggable screw bit. The output spindle 20 is also hollow on the inside and designed as a hexagon socket 26 - suitable for internally insertable, externally hexagonal standard screw bits. A direction of rotation lock 30 overlapped by the adjusting ring 22 can be set automatically from any locked position into a neutral position by means not shown, either mechanically coupled to the switch-on button and actuating the locking lever 38 (FIG. 2) or electrically actuated after the motor circuit has been closed. as soon as the output spindle 20 rotates with the motor switched on.

In Fig. 2 ist ein Querschnitt durch das Drehrichtungsgesperre 30 im vorderen Bereich der Handbohrschraubmaschine 10 bzw. der Schnittebene 2/2 gezeigt, dessen Einstellring 22 die Abtriebsspindel 20 konzentrisch umgreift. Das Drehrichtungsgesperre 30 wird aus einem Zahnrad 32 gebildet, das die Abtriebsspindel 20 drehfest umgreift und deren Drehung folgt. Das Zahnrad 32 trägt gleichmäßig beabstandete Zähne 34, die durch regelmäßig folgende Zahnlücken 36 zueinander beabstandet sind.2 shows a cross section through the direction of rotation lock 30 in the front area of the hand-held screwdriver 10 or the cutting plane 2/2, the adjusting ring 22 of which concentrically engages around the output spindle 20. The direction of rotation lock 30 is formed from a gear 32, which encompasses the output spindle 20 in a rotationally fixed manner and follows its rotation. The gear wheel 32 carries equally spaced teeth 34 which are spaced apart from one another by regularly following tooth gaps 36.

Den Zähnen 34 bzw. Zahnlücken 36 ist ein Rasthebel 38 zugeordnet, der um eine Drehachse 40 an der Stirnwand des Getriebegehäuses 13 schwenkbar so gelagert ist, dass er in der einen maximalen Schwenkposition mit einem ersten Sperrzahn 42 in eine der Zahnlücken 36 taucht und eine Drehung des Zahnrads 32 im Uhrzeigersinn gemäß Drehpfeil 43 sperrt. Dabei kann sich in der Gegendrehrichtung gemäß Drehpfeil 45 das Zahnrad 32 und damit die Abtriebsspindel 20 drehen, weil durch die schiefebene Ausgestaltung der rechten Zahnflanke des Sperrzahns 42 der Rasthebel 38 nach oben ausweichen kann und damit diese Drehrichtung freigibt. Das Ausweichen des Rasthebels 38 ist dadurch möglich, dass sich der Rasthebel 38 gegenüber dem Einstellring 22 bzw. gegenüber dessen Stellnocken 23 über eine gewölbte Blattfeder 46 abstützt, die zwar in Sperrichtung den ersten Sperrzahn 42 nach unten hält und ein Drehen des Zahnrads 32 im Uhrzeigersinn verhindert, jedoch bei Drehen des Zahnrads 32 in der Gegenrichtung so verformt wird, dass der Sperrzahn 42 aus der jeweiligen Zahnlücke 36 austritt und überrastend in die nächste Zahnlücke eintaucht, so dass ein hörbarer Ratscheneffekt in der Vorzugsrichtung entsteht.The teeth 34 or tooth gaps 36 are assigned a locking lever 38 which is pivotably mounted about an axis of rotation 40 on the end wall of the gear housing 13 in such a way that it dips into one of the tooth gaps 36 with a first locking tooth 42 and a rotation in the one maximum swivel position of the gear 32 locks clockwise according to the arrow 43. The gear 32 and thus the output spindle 20 can rotate in the opposite direction of rotation according to the arrow 45, because the locking lever 38 can deflect upwards due to the oblique configuration of the right tooth flank of the locking tooth 42 and thus release this direction of rotation. The detent lever 38 can be evaded in that the detent lever 38 is supported with respect to the adjusting ring 22 or with respect to the actuating cam 23 thereof via an arched leaf spring 46, which holds the first locking tooth 42 downward in the blocking direction and a rotation of the gear wheel 32 in the clockwise direction prevented, but is deformed when the gear 32 is rotated in the opposite direction so that the ratchet tooth 42 emerges from the respective tooth gap 36 and dips into the next tooth gap with a snap, so that an audible ratchet effect occurs in the preferred direction.

Wird der Einstellring 22 in Betrachtungsrichtung nach rechts geschwenkt, ergibt sich das umgekehrte Bild und die Gegendrehrichtung ist drehgesperrt, weil der zweite Sperrzahn 44 in eine der Zahnlücken 36 eintaucht. Eine Zugfeder 48 ist mit ihrer oberen Seite am Getriebegehäuse 13 und mit ihrer Unterseite an einem Vorsprung 50 des Rasthebels 38 befestigt und sucht diesen in seiner Neutralposition zu halten, in der beide Sperrzähne 42, 44 außer Eingriff mit den Zahnlücken 36 sind und damit beide Drehrichtungen der Abtriebsspindel 20 freigeben.If the adjusting ring 22 is pivoted to the right in the viewing direction, the reverse image results and the counter-rotation direction is locked against rotation because the second locking tooth 44 dips into one of the tooth gaps 36. A tension spring 48 is attached with its upper side to the gear housing 13 and with its underside to a projection 50 of the latching lever 38 and tries to keep it in its neutral position, in which both locking teeth 42, 44 are out of engagement with the tooth gaps 36 and thus both directions of rotation release the output spindle 20.

In Betrachtungsrichtung unten, auf der entgegengesetzten Seite des Rasthebels 38, trägt der Einstellring 22 einen Schaltnocken 52, der in einen längs verschiebbaren elektrischen Schiebekontakt 54 greift, und diesen je nach Stellposition des Einstellrings 22 an einen Gegenkontakt 56 in Betrachtungsrichtung rechts oder in der anderen Stellposition an den gegenüberliegenden Gegenkontakt 58 drückt und damit die elektrische Drehrichtungsum- schaltung des Motors bewirkt. Dadurch ist gesichert, dass sich der Motor nur in der Richtung dreht, die durch die gewählte Position des Rasthebels 38 zum Drehen freigegeben ist.In the viewing direction below, on the opposite side of the locking lever 38, the setting ring 22 carries a switching cam 52 which engages in a longitudinally displaceable electrical sliding contact 54 and, depending on the setting position of the setting ring 22, a counter contact 56 in the viewing direction on the right or in the other setting position presses on the opposite mating contact 58 and thus causes the electrical direction of rotation of the motor to be switched. This ensures that the motor only rotates in the direction that is released for rotation by the selected position of the locking lever 38.

Bei einer derartigen Anordnung der elektrischen Drehrichtungsximschaltung ist ein gesonderter Drehrichtungsschalter 18 wie in Fig. 1 entweder stillgelegt oder nicht vorgesehen.With such an arrangement of the electrical direction of rotation switching, a separate direction of rotation switch 18, as in FIG. 1, is either shut down or not provided.

Fig. 3 zeigt eine schematische Darstellung gemäß Fig. 2, jedoch mit gesperrter Gegen- drehrichtung. Dabei ist der zweite Sperrzahn 44 in eine Zahnlücke 36 getaucht und hindert das Zahnrad 32 - und damit die Abtriebswelle 20 - sich entgegen dem Uhrzeigersinn zu drehen. In diesem Fall ist die Drehung im Uhrzeigersinn gemäß dem Pfeil 45 freigegeben. Zugleich ist der Schiebekontakt 54 am Gegenkontakt 58 zur Anlage gekommen und vom gegenüberliegenden Gegenkontakt 56 gelöst. Dadurch kann sich der Motor bzw. die Abtriebsspindel 20 nur gemäß Drehpfeil 45 drehen.FIG. 3 shows a schematic illustration according to FIG. 2, but with the reverse direction of rotation blocked. The second locking tooth 44 is immersed in a tooth gap 36 and prevents the gear 32 - and thus the output shaft 20 - from rotating counterclockwise. In this case, the clockwise rotation is released according to arrow 45. At the same time, the sliding contact 54 has come into contact with the mating contact 58 and has been released from the opposite mating contact 56. As a result, the motor or the output spindle 20 can only rotate according to the arrow 45.

Fig. 4 zeigt den Rasthebel 38 in Neutralstellung, in der beide Sperrzähne 42, 44 völlig außer Eingriff mit den Zahnlücken 36 sind und damit das Zahnrad 32 bzw. die Abtriebsspindel 20 in entgegengesetzte Drehrichtungen freidrehbar sind.Fig. 4 shows the locking lever 38 in the neutral position, in which both locking teeth 42, 44 are completely out of engagement with the tooth gaps 36 and thus the gear 32 and the output spindle 20 can be freely rotated in opposite directions of rotation.

Die Blattfeder 46 ist sinusförmig gebogen, so dass ihre konkave Wölbung mittig dicht benachbart zur Drehachse 40 positioniert ist. Durch nicht dargestellte Uberrastmittel wird der Einstellring 22 bzw. dessen Stellnocken 23 fühlbar in jeweils einer der drei möglichen Stellpositionen kraftschlüssig festgehalten. Diese Haltekraft ist nur durch Drehen des Einstellrings 22 mit einer Mindestkraft von Hand zu überwinden In Fig. 5 ist eine Seitenansicht einer Handbohrschraubmaschine 60 dargestellt. Sie hat ein Gehäuse 62, das aus - nicht näher bzeichnetem Motorgehäuse- und - in Betrachtungsrichtung links sich daran anschließendem Getriebegehäuse besteht. Aus dieem tritt vorn mittig eine Abtriebsspindel 70 mit einem Innensechskant 72 aus, die mittels des Motors drehend antreibbar ist.The leaf spring 46 is curved sinusoidally, so that its concave curvature is positioned close to the center of rotation 40 in the center. The locking ring 22 and its adjusting cams 23 are held in a force-locking manner in one of the three possible adjusting positions by not shown latching means. This holding force can only be overcome by turning the adjusting ring 22 with a minimum force by hand 5 shows a side view of a hand drill screwdriver 60. It has a housing 62, which consists of a motor housing (not shown in more detail) and a gear housing adjoining it to the left in the viewing direction. An output spindle 70 with an internal hexagon 72 emerges from the front in the center and can be driven in rotation by means of the motor.

Dazu ist in einem pistolenformigen Handgriff 64, der sich vom Gehäuse 12 nach unten abgewinkelt erstreckt, ein nicht dargestellter Akku angeordnet, der durch Betätigen der Schalttaste 66 mit dem Motor elektrisch verbindbar bzw. ein- und ausschaltbar ist.For this purpose, a battery (not shown) is arranged in a pistol-shaped handle 64, which extends angled downward from the housing 12, and which can be electrically connected or switched on and off by actuating the switch key 66 to the motor.

Oberhalb der Schalttaste 66 ist ein seitlich, quer zur Längsache der Handbohrschraubmaschine 60 hin- und herschiebbarer Drelrrichtungsschalter 68 angeordnet, mit dem die Motordrehrichtung nach rechts bzw. links umschaltbar ist.Above the switch button 66 is a laterally, transversely to the longitudinal axis of the hand-held screwdriver 60 back and forth sliding direction switch 68 is arranged, with which the motor direction of rotation can be switched to the right or left.

In den Innensechskant 72 der Abtriebswelle 70 ist ein Sechskantbitschaft 77 lösbar eingesetzt, der ein Chssis 75 eines Ratschen-Bits 74 trägt. Der Ratschen-Bit 74 trägt auf seinem Chassis 75 einen drehbar gelagerten Einstellring 76, mit dem durch Drehen um einen bestimmten bzw. begrenzten Drehwinkel nach links oder rechts seine Ausgangswelle 79 jeweils in einer Drehrichtung dreharretierbar und dabei in der anderen Drehrichtung frei drehbar ist.A hexagon bit shank 77 is removably inserted into the hexagon socket 72 of the output shaft 70 and carries a chisel 75 of a ratchet bit 74. The ratchet bit 74 carries on its chassis 75 a rotatably mounted adjusting ring 76, with which its output shaft 79 can be locked in one direction of rotation by rotating through a specific or limited angle of rotation to the left or right and can be freely rotated in the other direction of rotation.

Die Ausgangswelle 79 tritt mittig aus dem Ratschen-Bit 74. Sie ist außen als Sechskant gestaltet und als Steckschlüssel einsetzbar bzw. mit einem außen aufsteckbaren Schraub- bit kuppelbar. Die Ausgangswelle 79 ist außerdem innen hohl und als Innensechskant 80 ausgestaltet - passend für innen einsteckbare, außen sechseckige Normschraubbits.The output shaft 79 emerges from the center of the ratchet bit 74. It is designed on the outside as a hexagon and can be used as a socket wrench or can be coupled with an externally attachable screw bit. The output shaft 79 is also hollow on the inside and designed as a hexagon socket 80 - suitable for insertable inside, hexagonal standard screw bits on the outside.

Die jeweils freigebende Drehrichtung der Ratsche 68 wird durch zwei entgegengesetzte Richtungspfeile 82 angezeigt. The respectively releasing direction of rotation of the ratchet 68 is indicated by two opposite direction arrows 82.

Claims

Ansprüche Expectations 1. Handbohrschraubmaschine (10) mit einem Gehäuse (12, 13) und einem darin angeordneten Motor zum Antrieb einer im Gehäuse (12, 13) drehend gelagerten Abtriebsspindel (20), die mit Einsatzwerkzeugen wie Bohrer, Schraubbits oder dergleichen zur Drehmitnahme kuppelbar ist, dadurch gekennzeichnet, dass die Abtriebsspindel (20) mit einem wählbar einstellbaren Drehrichtungsgesperre (30) gekuppelt ist, das allein ein außen auf die Abtriebsspindel (20) wirkendes Drehmoment in einer Richtung sperrt und in der entgegengesetzten Richtung freigibt.1. hand drill screwdriver (10) with a housing (12, 13) and a motor arranged therein for driving an output spindle (20) which is rotatably mounted in the housing (12, 13) and which can be coupled with insert tools such as drills, screw bits or the like for rotary driving, characterized in that the output spindle (20) is coupled to a selectively adjustable direction of rotation lock (30) which alone blocks a torque acting externally on the output spindle (20) in one direction and releases it in the opposite direction. 2. Handbohrschraubmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Drehrichtungsgesperre (30) über einen Einstellring (22) einstellbar ist.2. Hand drill screwdriver according to claim 1, characterized in that the direction of rotation lock (30) via an adjusting ring (22) is adjustable. 3. Handbohrschraubmaschine nach einem der vorhergehbaren Ansprüche, dadurch ge- kennzeichnet, dass Mittel vorgesehen sind, mit denen das Drehrichtungsgesperre (30) bei Einschalten des Motors automatisch neutralisiert wird, so dass sich die Abtriebsspindel (20) frei drehen kann.3. Hand drill screwdriver according to one of the preceding claims, characterized in that means are provided with which the direction of rotation lock (30) is automatically neutralized when the motor is switched on, so that the output spindle (20) can rotate freely. 4. Handbohrschraubmaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Stellmittel zur Wahl der jeweils zu sperrenden Drehrichtung mit einem elektrischen Schalter zur Drehrichtungseinstellung des Motors kuppelbar sind.4. Hand drill screwdriver according to claim 3, characterized in that the adjusting means for selecting the respective direction of rotation to be blocked can be coupled with an electrical switch for setting the direction of rotation of the motor. 5. Handbohrschraubmaschine nach einem der vorhergehbaren Ansprüche, dadurch gekennzeichnet, dass die Stellmittel, insbesondere der Einstellring (22), zur Betätigung des Drehrichtungsgesperres (30) den Drehrichtungsschalter (18) automatisch in eine solche Position stellen, dass die durch das Drehrichtungsgesperre (30) freigegebene Drehrichtung mit der Motordrelrrichtung übereinstimmt.5. Hand drill screwdriver according to one of the preceding claims, characterized in that the adjusting means, in particular the adjusting ring (22), for actuating the direction of rotation lock (30) automatically set the direction of rotation switch (18) in such a position that the direction of rotation lock (30) released direction of rotation corresponds to the motor direction. 6. Handbohrschraubmaschine (60) mit einem Gehäuse (12) und einem darin angeordne- ten Motor zum Antrieb einer im Gehäuse (12 drehend gelagerten Abtriebsspindel (70), die mit Einsatzwerkzeugen wie Bohrer, Schraubbits oder dergleichen zur Drehmitnahme kuppelbar ist und mit einem - bei von außen auf die Abtriebsspindel (70) wirkendem Drehmoment - die Abtriebsspindel (70) drehfest festlegenden Drehrichtungsgesperre, dadurch gekennzeichnet, dass die Abtriebsspindel (70) mit einem lösbar einsteckbaren Ratschenbit (74) bestückbar ist, das als wählbar einstellbares Drehrichtungsgesperre dient.6. Hand drill screwdriver (60) with a housing (12) and a motor arranged therein for driving an output spindle (70) which is rotatably mounted in the housing (12) and which can be coupled with insert tools such as drills, screw bits or the like for rotary driving and with a - with external torque acting on the output spindle (70) - the output spindle (70) rotationally fixed locking mechanism, characterized in that the output spindle (70) with a detachable plug-in ratchet bit (74) can be fitted, which serves as a selectable adjustable rotation lock. Drehrichtungsgesperre, dadurch gekennzeichnet, dass es als lösbares Ratschen-Bit (68) , insbesondere von einem Norm-Sechskantschaft (77) getragen, in eine Bit- Aufnahme (72) einer Handbohrschraubmaschine (60), insbesondere versehen mit integriertem, automatischem Drehrichtungsgesperre, einsetzbar ist. Direction of rotation lock, characterized in that it can be used as a detachable ratchet bit (68), in particular carried by a standard hexagonal shaft (77), in a bit holder (72) of a hand-held screwdriver (60), in particular provided with an integrated, automatic rotation direction lock is.
PCT/EP2004/052717 2003-11-27 2004-10-29 Hand-held drilling and screw driving machine Ceased WO2005051606A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10356006A DE10356006A1 (en) 2003-11-27 2003-11-27 Handbohrschraubmaschine
DE10356006.8 2003-11-27

Publications (1)

Publication Number Publication Date
WO2005051606A1 true WO2005051606A1 (en) 2005-06-09

Family

ID=34609401

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/052717 Ceased WO2005051606A1 (en) 2003-11-27 2004-10-29 Hand-held drilling and screw driving machine

Country Status (2)

Country Link
DE (1) DE10356006A1 (en)
WO (1) WO2005051606A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2895928A1 (en) * 2006-01-06 2007-07-13 Georges Renault Soc Par Action Gun type screwing and unscrewing tool e.g. unscrewer-screw gun, for rotating unit, has push buttons activated along longitudinal axis direction connecting front and rear parts of body of tool and mounted on shoulder provided on case of tool
WO2017001423A1 (en) * 2015-06-30 2017-01-05 Festool Gmbh Portable power tool
DE102016124241A1 (en) 2016-12-13 2018-06-14 Schaeffler Technologies AG & Co. KG shaft coupling
CN110576405A (en) * 2019-08-15 2019-12-17 陈慧 A screw gun for assembly

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329185A (en) * 1964-10-24 1967-07-04 Bosch Gmbh Robert Power driven device for tightening and loosening of screws or the like
US3802518A (en) * 1972-03-09 1974-04-09 J Albert Ratchet implement
EP0088836A1 (en) * 1982-03-11 1983-09-21 Katsuyuki Totsu An electrically driven screw-driver
US4754669A (en) * 1985-10-24 1988-07-05 Black & Decker Inc. Motor driven screwdriver with spindle lock
DE4128651A1 (en) * 1991-08-29 1993-03-04 Gardena Kress & Kastner Gmbh Electric screwdriver with reverse and manual switch settings - has ratchet-and-pawl arrangements in gearbox allowing optional manual screw-driving or withdrawal with motor inoperative
GB2333729A (en) * 1998-01-30 1999-08-04 Scintilla Ag A hand-guided drill with a spindle locking device
US6199642B1 (en) * 1999-07-06 2001-03-13 Snap-On Tools Company Reversible ratcheting power tool with synchronized motor and ratchet control
US20030061913A1 (en) * 2000-12-29 2003-04-03 Marquardt Steven H. Advanced tools systems

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329185A (en) * 1964-10-24 1967-07-04 Bosch Gmbh Robert Power driven device for tightening and loosening of screws or the like
US3802518A (en) * 1972-03-09 1974-04-09 J Albert Ratchet implement
EP0088836A1 (en) * 1982-03-11 1983-09-21 Katsuyuki Totsu An electrically driven screw-driver
US4754669A (en) * 1985-10-24 1988-07-05 Black & Decker Inc. Motor driven screwdriver with spindle lock
DE4128651A1 (en) * 1991-08-29 1993-03-04 Gardena Kress & Kastner Gmbh Electric screwdriver with reverse and manual switch settings - has ratchet-and-pawl arrangements in gearbox allowing optional manual screw-driving or withdrawal with motor inoperative
GB2333729A (en) * 1998-01-30 1999-08-04 Scintilla Ag A hand-guided drill with a spindle locking device
US6199642B1 (en) * 1999-07-06 2001-03-13 Snap-On Tools Company Reversible ratcheting power tool with synchronized motor and ratchet control
US20030061913A1 (en) * 2000-12-29 2003-04-03 Marquardt Steven H. Advanced tools systems

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2895928A1 (en) * 2006-01-06 2007-07-13 Georges Renault Soc Par Action Gun type screwing and unscrewing tool e.g. unscrewer-screw gun, for rotating unit, has push buttons activated along longitudinal axis direction connecting front and rear parts of body of tool and mounted on shoulder provided on case of tool
WO2017001423A1 (en) * 2015-06-30 2017-01-05 Festool Gmbh Portable power tool
CN107980019A (en) * 2015-06-30 2018-05-01 费斯托工具有限责任公司 Hand held power machine
EP3674038A1 (en) * 2015-06-30 2020-07-01 Festool GmbH Hand tool machine
CN107980019B (en) * 2015-06-30 2021-10-15 费斯托工具有限责任公司 hand-held power tool
DE102016124241A1 (en) 2016-12-13 2018-06-14 Schaeffler Technologies AG & Co. KG shaft coupling
CN110576405A (en) * 2019-08-15 2019-12-17 陈慧 A screw gun for assembly
CN110576405B (en) * 2019-08-15 2020-12-08 江西万上实业有限公司 A screw gun for assembly

Also Published As

Publication number Publication date
DE10356006A1 (en) 2005-06-23

Similar Documents

Publication Publication Date Title
DE69202384T2 (en) Ratchet wrench.
EP2295206B1 (en) Electric combined hand-held power tool
EP2064031B1 (en) Electric power hand tool
DE10254451A1 (en) Power-driven, hand-held tool with side handle
DE10108672C2 (en) Handle device for a key
DE19528924B4 (en) Electric hammer drill
DE3316111C2 (en)
DE2557118C2 (en) Portable rotary impact machines with detachable striking mechanism
DE3317398C2 (en) Surgical hand drill
EP1946892B1 (en) Impact wrench
DE4128651A1 (en) Electric screwdriver with reverse and manual switch settings - has ratchet-and-pawl arrangements in gearbox allowing optional manual screw-driving or withdrawal with motor inoperative
WO2005051606A1 (en) Hand-held drilling and screw driving machine
EP0180831B1 (en) Pipe wrench
WO2019223992A1 (en) Ratchet wrench
DE10227983C1 (en) Hand machining tool with blocking device for blocking rotation of its drive shaft during attachment of tool to drive shaft
DE2631994A1 (en) Hand held bidirectional power tool - has on=off button and direction reversing lever interlocked to prevent wrong rotation
DE3108112A1 (en) Handtool with a rotatable work spindle for use with a tool insert such as a screwdriver blade, a drill, a cutter, a hexagon box spanner or the like
DE2629472A1 (en) Screw driver with motor drive - has piston shaped housing with battery and removable grip carrying motor reversing switch
CH640452A5 (en) SCREWDRIVER.
DE10309057B4 (en) Hand-operated implement with adjustable torque limiter
DE3938244A1 (en) Quick-change tool adaptor - is for portable drill or screwdriver and has drill fitted in adaptor with shank end entering quick-change chuck
DE19512064A1 (en) Self turning screwing tool for professional and home working
DE102005006425A1 (en) A method for the application and release of a tool in an electric battery driven hand tool has a rotatable chuck housing which operates the jaws
DE102015120421B3 (en) Ratchet wrench with quick-change drive parts
DE19935142C2 (en) Plug-in adapter for combination keys

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase