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EP0178252B1 - Power-driven screw driver - Google Patents

Power-driven screw driver Download PDF

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Publication number
EP0178252B1
EP0178252B1 EP85810344A EP85810344A EP0178252B1 EP 0178252 B1 EP0178252 B1 EP 0178252B1 EP 85810344 A EP85810344 A EP 85810344A EP 85810344 A EP85810344 A EP 85810344A EP 0178252 B1 EP0178252 B1 EP 0178252B1
Authority
EP
European Patent Office
Prior art keywords
stop
actuating sleeve
sleeve
bush
stop bush
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
Application number
EP85810344A
Other languages
German (de)
French (fr)
Other versions
EP0178252A2 (en
EP0178252A3 (en
Inventor
Paul Duerr
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to AT85810344T priority Critical patent/ATE34529T1/en
Publication of EP0178252A2 publication Critical patent/EP0178252A2/en
Publication of EP0178252A3 publication Critical patent/EP0178252A3/en
Application granted granted Critical
Publication of EP0178252B1 publication Critical patent/EP0178252B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/141—Mechanical overload release couplings
    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0064—Means for adjusting screwing depth

Definitions

  • the invention relates to a motor-driven screwing device with an adjustable torque limiting clutch arranged between a drive unit and a drive spindle for the tool, an adjustable stop sleeve relative to the device housing, on which a spring element adjustable for adjusting the torque limiting clutch is supported, the stop sleeve axially opposite one of these by a screw connection adjustable depth stop carries, with which an actuating sleeve is rotatably and axially displaceably connected.
  • a well-known motorized screwdriver type 1410.1 in accordance with the BOSCH catalog EW-WEB 1/130 (2.84) H, has an adjustable torque limiting coupling as well as an adjustable depth stop.
  • the torque limiting clutch is adjusted by changing the preload applied by a spring element between a coupling part connected in a rotationally fixed manner to a drive spindle and an output part of a drive unit.
  • a stop bush serving as an abutment for the spring element is axially displaced relative to the device housing.
  • a first actuating sleeve connected to the stop bushing is provided for this adjustment process.
  • a second actuating sleeve is used to adjust the depth stop. This manually mediated rotary movement is transmitted to the depth stop, which is therefore axially displaceable relative to the stop bush due to a screw connection with the device part receiving it.
  • the invention has for its object to provide in a screwdriver of the type described for adjusting the torque limiting clutch and adjusting the depth stop an actuator characterized by simple structure and easy handling.
  • the actuating sleeve thus fulfills a double function, in that on the one hand the depth stop can be adjusted and on the other hand the torque limiting clutch can be adjusted. This allows a simple structure and considerably simplifies handling.
  • Suitable as a connecting element is, for example, a partially free-standing bolt which is held in position by the actuating sleeve and which engages in frontal locking openings of the stop bushing in order to achieve the rotational connection.
  • the latching openings can be provided directly or indirectly, for example, via a support ring on the stop bush.
  • latching elements for securing the actuating sleeve are provided on the actuating sleeve and on the stop bush both in the rotationally fixed position relative to the stop bush and in the position axially displaced relative to the stop bush.
  • locking elements allows the operator to clearly perceive the changeover of the actuating sleeve to the respective other position.
  • the locking elements prevent the position of the actuating sleeve from changing automatically, as might otherwise occur in the event of vibrations or other external influences.
  • the screwing device has a device housing, generally designated 1, with a handle 2 projecting sideways from it.
  • the power supply line is provided by a cable 3 opening into the handle 2.
  • the screwdriver is switched on or off via a trigger 4.
  • An actuating sleeve 5 is connected to the front of the device housing 1 and a depth stop, denoted overall by 6, is axially surmounted by the working end of a screw insert 7.
  • Figure 2 shows the stub of the drive shaft 8 of an engine.
  • An output part in the form of a gear 9 meshes with the end-side pinion 8a of the drive shaft 8 and is rotatably supported by a rotary bearing 11 on an axially subdivided drive spindle, generally designated 12.
  • the gear 9 is shouldered by a roller bearing 13.
  • the gear 9 has a spur toothing 9a.
  • the drive spindle 12 is secured against rotation by a spline toothing 14, and a disk-shaped coupling part 15 is slidably assigned. This has a corresponding counter toothing 15a.
  • the counter toothing 15a of the coupling part 15 is held in engagement with the end toothing 9a of the toothed wheel 9 by the force of a spring element which is formed by plate springs and is designated overall by 16.
  • the spring element 16 is supported by a further roller bearing 17 and a locking ring 18 which is in one stop socket 19 is stuck, towards the front.
  • the gear 9, the coupling part 15 and the spring element 16 together form a torque limiting clutch, designated overall by 21.
  • the rotary bearing of the rear section 22 of the drive spindle 12 is used by a ball bearing 23 which is axially immovably fixed on the section 22 between a support ring 24 and a shoulder 22a.
  • the stop bushing 19 is connected by a thread 25 to the device housing 1 by a sliding connection.
  • the stop bush 19 In a radial bore 19a, the stop bush 19 carries a locking ball 26, which snaps into place in a longitudinal groove 28 distributed over the inner surface of the device housing 1 by a compression spring 27. A rotation of the stop bush 19 can therefore only take place by overcoming this locking.
  • a scale ring 29 is pressed onto the stop bush 19.
  • a reading window 31 in the device housing 1 enables reading of the respectively set torque level.
  • the maximum and minimum setting of the torque is limited by a pin 32 seated in the stop bushing 19.
  • a rotary bearing 33 is provided for the front section 34 of the drive spindle 12. Furthermore, a sealing ring 35 is located in front of the rotary bearing 33.
  • a connecting ring 37 which is part of the depth stop 6, is in screw connection with the stop bush 19 via a further thread 36.
  • the actuating sleeve 5 which is made of plastic, carries a connecting element 38, which is firmly connected to it, in the form of a cast-in bolt.
  • the forward end region 38a of the connecting element 38 projects into an axial bore 37a of the connecting ring 37.
  • the opposite rear free end region 38b of the connecting element 38 engages in latching openings 19b of the stop bush 19, a plurality of which are arranged on a circular path on the end face.
  • the actuating sleeve 5 In this engagement position of the connecting element 38, the actuating sleeve 5 is held in a circumferential groove 19c of the stop bush 19 by the latching engagement of a bead 5a arranged on resilient fingers.
  • the screwing insert 7 is inserted in a rotationally locking manner into a receiving opening 39 of the drive spindle 12.
  • the front section 34 of the drive spindle 12 is displaced toward the rear section 22, so that the drive spindle 12 forms a rotationally locking unit through mutual engagement of dog gear rings 34a, 22b.
  • the torque introduced by the drive shaft 8 is thus transmitted to the drive spindle 12 via the torque limiting clutch 21 and from there to the screw insert 7.
  • the torque that can be transmitted by the torque limiting clutch 21 is set by changing the axial position of the stop bushing 19. For this purpose, this must be rotated, which is accomplished with the aid of the actuating sleeve 5.
  • FIG. 3 shows such an offset position and also illustrates the abutment of the bead 5a under pretension on a support flank 19d facing the front of the stop bush 19.
  • the actuating sleeve 5 is moved into the The functional position shown in FIG. 2 is therefore only possible after the support flank 19d has been passed over, for which purpose the operator has to apply a corresponding displacement force.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Transmission Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Vehicle Body Suspensions (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

Abstract

In a motor-driven screw driving device, a drive unit and a drive member are located within a housing and are interconnected by a torque-limiting coupling. The coupling is adjustable by changing the force applied to a spring element. The spring element is supported within a stop sleeve located within the housing and the stop sleeve is axially displaceable relative to the housing. A depth stop on the drive spindle is adjustable relative to the stop sleeve. An actuating sleeve accessible on the exterior of the screw driving device affords the adjustment of the stop sleeve and the depth stop. A connecting element is secured to the actuating sleeve and is in engagement with the depth stop so that the actuating sleeve and depth stop can be rotated as a unit. The connecting element is selectively engageable with the stop sleeve so that the actuating sleeve and stop sleeve can be rotated as a unit for adjusting the torque-limiting coupling.

Description

Die Erfindung betrifft ein motorisch betriebenes Schraubgerät mit einer zwischen einer Antriebseinheit und einer Antriebsspindel für das Werkzeug angeordneten einstellbaren Drehmomentbegrenzungskupplung, einer gegenüber dem Gerätegehäuse verstellbaren Anschlagbuchse, an der sich ein zur Einstellung der Drehmomentbegrenzungskupplung verstellbares Federelement abstützt, wobei die Anschlagbuchse einen dieser gegenüber durcheine Schraubverbindung axial verstellbaren Tiefenanschlag trägt, mit dem drehschlüssig und axial verschiebbar eine Betätigungshülse verbunden ist.The invention relates to a motor-driven screwing device with an adjustable torque limiting clutch arranged between a drive unit and a drive spindle for the tool, an adjustable stop sleeve relative to the device housing, on which a spring element adjustable for adjusting the torque limiting clutch is supported, the stop sleeve axially opposite one of these by a screw connection adjustable depth stop carries, with which an actuating sleeve is rotatably and axially displaceably connected.

Ein bekanntes motorisch betriebenes Schraubgerät, Typ 1410.1 entsprechend BOSCH-Katalog EW-WEB 1/130 (2.84) H, verfügt über eine einstellbare Drehmomentbegrenzungskupplung sowie über einen verstellbaren Tiefenanschlag. Das Einstellen der Drehmomentbegrenzungskupplung erfolgt durch Verändern der durch ein Federelement aufgebrachten Vorspannung zwischen einem drehfest mit einer Antriebsspindel verbundenen Kupplungsteil und einem Abtriebsteil einer Antriebseinheit.A well-known motorized screwdriver, type 1410.1 in accordance with the BOSCH catalog EW-WEB 1/130 (2.84) H, has an adjustable torque limiting coupling as well as an adjustable depth stop. The torque limiting clutch is adjusted by changing the preload applied by a spring element between a coupling part connected in a rotationally fixed manner to a drive spindle and an output part of a drive unit.

Hierzu wird eine als Widerlager für das Federelement dienende Anschlagbuchse relativ zum Gerätegehäuse axial verschoben. Für diesen Einstellvorgang ist eine mit der Anschlagbuchse verbundene erste Betätigungshülse vorgesehen. Davon konstruktiv getrennt, dient dem Verstellen des Tiefenanschlages eine zweite Betätigungshülse. Diese manuell vermittelte Drehbewegung wird auf den Tiefenanschlag übertragen, der somit aufgrund einer Schraubverbindung mit dem Ihn aufnehmenden Geräteteil relativ zur Anschlagbuchse axial versetzbar ist.For this purpose, a stop bush serving as an abutment for the spring element is axially displaced relative to the device housing. A first actuating sleeve connected to the stop bushing is provided for this adjustment process. Separately from this, a second actuating sleeve is used to adjust the depth stop. This manually mediated rotary movement is transmitted to the depth stop, which is therefore axially displaceable relative to the stop bush due to a screw connection with the device part receiving it.

Diese bekannte Anordnung hat insbesondere den handhäbungsmässigen Nachteil, dass die Möglichkeit der Verwechslung der Betätigungshülsen besteht.This known arrangement has in particular the handling disadvantage that there is the possibility of confusing the actuating sleeves.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Schraubgerät der eingangs beschriebenen Art für das Einstellen der Drehmomentbegrenzungskupplung und das Verstellen des Tiefenanschlags eine sich durch einfachen Aufbau und problemlose Handhabung auszeichnende Betätigungseinrichtung zu schaffen.The invention has for its object to provide in a screwdriver of the type described for adjusting the torque limiting clutch and adjusting the depth stop an actuator characterized by simple structure and easy handling.

Erfindungsgemäss wird die Aufgabe durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.According to the invention the object is achieved by the characterizing features of patent claim 1.

Die Betätigungshülse erfüllt somit eine zweifache Funktion, indem einerseits der Tiefenanschlag verstellt und andererseits die Drehmomentbegrenzungskupplung eingestellt werden kann. Dies erlaubt einen einfachen Aufbau und vereinfacht die Handhabung erheblich.The actuating sleeve thus fulfills a double function, in that on the one hand the depth stop can be adjusted and on the other hand the torque limiting clutch can be adjusted. This allows a simple structure and considerably simplifies handling.

Als Verbindungselement-eignet sich beispielsweise ein von der Betätigungshülse lagefest gehaltener, teilweise freistehender Bolzen, der zur Erzielung der drehschlüssigen Verbindung in stirnseitige Rastöffnungen der Anschlagbuchse eingreift. Die Rastöffnungen können direkt oder beispielsweise über einen Stützring indirekt an der Anschlagsbuchse vorgesehen sein.Suitable as a connecting element is, for example, a partially free-standing bolt which is held in position by the actuating sleeve and which engages in frontal locking openings of the stop bushing in order to achieve the rotational connection. The latching openings can be provided directly or indirectly, for example, via a support ring on the stop bush.

Vorzugsweise sind an der Betätigungshülse und an der Anschlagbuchse Rastelemente zur Sicherung der Betätigungshülse sowohl in der gegenüber der Anschlagbuchse drehschlüssig festgelegten als auch in der axial dazu versetzten, gegenüber der Anschlagbuchse frei verdrehbaren Position vorgesehen.Preferably, latching elements for securing the actuating sleeve are provided on the actuating sleeve and on the stop bush both in the rotationally fixed position relative to the stop bush and in the position axially displaced relative to the stop bush.

Das Anordnen solcher Rastelemente lässt die Bedienungsperson das Umstellen der Betätigungshülse auf die jeweils andere Position deutlich wahrnehmen. Zudem unterbinden die Rastelemente eine selbsttätige Positionsänderung der Betätigungshülse, wie dies eventuell bei auftretenden Erschütterungen oder anderen äusseren Einflüssen andernfalls auftreten könnte.The arrangement of such locking elements allows the operator to clearly perceive the changeover of the actuating sleeve to the respective other position. In addition, the locking elements prevent the position of the actuating sleeve from changing automatically, as might otherwise occur in the event of vibrations or other external influences.

Die Erfindung sei nachstehend anhand von Zeichnungen, die ein Ausführungsbeispiel eines Schraubgerätes wiedergeben, näher erläutert. Es zeigen :-

  • Fig: 1 die Ansicht eines kompletten Schraubgerätes ;
  • Fig. 2 einen vergrösserten Längsschnitt durch den Vorderbereich des Schraubgerätes nach Fig. 1, mit fehlendem Vorderteil des Tiefenanschlags und fehlendem Schraubeinsatz ;
  • Fig. 3 einen Ausschnitt aus dem Längsschnitt nach Fig. 2, mit in anderer Funktionsstellung befindlicher Betätigungshülse.
The invention is explained in more detail below with reference to drawings which show an embodiment of a screwing device. Show it :-
  • Fig: 1 the view of a complete screwdriver;
  • FIG. 2 shows an enlarged longitudinal section through the front area of the screwing device according to FIG. 1, with the front part of the depth stop missing and the screwing insert missing;
  • Fig. 3 shows a detail from the longitudinal section of FIG. 2, with the actuating sleeve in a different functional position.

Das Schraubgerät nach Figur 1 weist ein insgesamt mit 1 bezeichnetes Gerätegehäuse mit einem von diesem seitwärts abstehenden Handgriff 2 auf. Der Stromzuleitung dient ein in den Handgriff 2 mündendes Kabel 3. Ueber einen Trigger 4 wird das Schraubgerät ein- bzw ausgeschaltet. An das Gerätegehäuse 1 schliesst vorderseitig eine Betätigungshülse 5 und an diese ein insgesamt mit 6 bezeichneter Tiefenanschlag an- Dieser wird vom Arbeitsende eines Schraubeinsatzes 7 axial überragt.The screwing device according to FIG. 1 has a device housing, generally designated 1, with a handle 2 projecting sideways from it. The power supply line is provided by a cable 3 opening into the handle 2. The screwdriver is switched on or off via a trigger 4. An actuating sleeve 5 is connected to the front of the device housing 1 and a depth stop, denoted overall by 6, is axially surmounted by the working end of a screw insert 7.

Die Figur 2 zeigt den Stummel der Antriebswelle 8 eines Motors. Mit dem endseitigen Ritzel 8a der Antriebswelle 8 kämmt ein Abtriebsteil in Form eines Zahnrades 9, das über ein Drehlager 11 auf einer insgesamt mit 12 bezeichneten, axial unterteilten Antriebsspindel frei drehbar gelagert ist. Nach hinten ist das Zahnrad 9 durch ein Rollenlager 13 abgeschultert. An der gegenüberliegenden Seite weist das Zahnrad 9 eine Stirnverzahnung 9a auf. Der Antriebsspindel 12 ist, durch eine Keilwellenverzahnung 14 gegen Drehen gesichert, ein scheibenförmiges Kupplungsteil 15 verschiebbar zugeordnet. Dieses weist eine korrespondierende Gegenverzahnung 15a auf.Figure 2 shows the stub of the drive shaft 8 of an engine. An output part in the form of a gear 9 meshes with the end-side pinion 8a of the drive shaft 8 and is rotatably supported by a rotary bearing 11 on an axially subdivided drive spindle, generally designated 12. To the rear, the gear 9 is shouldered by a roller bearing 13. On the opposite side, the gear 9 has a spur toothing 9a. The drive spindle 12 is secured against rotation by a spline toothing 14, and a disk-shaped coupling part 15 is slidably assigned. This has a corresponding counter toothing 15a.

Die Gegenverzahnung 15a des Kupplungsteiles 15 wird von der Kraft eines durch Tellerfedern gebildeten, insgesamt mit 16 bezeichneten Federelementes mit der Stirnverzahnung 9a des Zahnrades 9 in Eingriff gehalten. Das Federelement 16 stützt sich über ein weiteres Rollenlager 17 und einen Sicherungsring 18, der in einer Anschlagbuchse 19 festsitzt, nach vorne ab. Das Zahnrad 9, das Kupplungsteil 15 und das Federelement 16 bilden zusammen eine insgesamt mit 21 bezeichnete Drehmomentbegrenzungskupplung.The counter toothing 15a of the coupling part 15 is held in engagement with the end toothing 9a of the toothed wheel 9 by the force of a spring element which is formed by plate springs and is designated overall by 16. The spring element 16 is supported by a further roller bearing 17 and a locking ring 18 which is in one stop socket 19 is stuck, towards the front. The gear 9, the coupling part 15 and the spring element 16 together form a torque limiting clutch, designated overall by 21.

Der Drehlagerung des hinteren Abschnittes 22 der Antriebsspindel 12 dient ein Kugellager 23, das auf dem Abschnitt 22 zwischen einem Stützring 24 und einer Schulter 22a axial unverschieblich festsitzt. Die Anschlagbuchse 19 steht über ein Gewinde 25 mit dem Gerätegehäuse 1 in durch Drehen verschieblicher Verbindung. In einer Radialbohrung 19a trägt die Anschlagbuchse 19 eine Rastkugel 26, die von einer Druckfeder 27 in über die Innenfläche des Gerätegehäuses 1 verteilt angeordnete Längsnuten 28 einrastet. Ein Verdrehen der Anschlagbuchse 19 kann demnach nur unter Ueberwindung dieser Verrastung erfolgen.The rotary bearing of the rear section 22 of the drive spindle 12 is used by a ball bearing 23 which is axially immovably fixed on the section 22 between a support ring 24 and a shoulder 22a. The stop bushing 19 is connected by a thread 25 to the device housing 1 by a sliding connection. In a radial bore 19a, the stop bush 19 carries a locking ball 26, which snaps into place in a longitudinal groove 28 distributed over the inner surface of the device housing 1 by a compression spring 27. A rotation of the stop bush 19 can therefore only take place by overcoming this locking.

Auf die Anschlagbuchse 19 ist ein Skalenring 29 aufgepresst. Das Ablesen der jeweils eingestellten Drehmoment-Stufe ermöglicht ein Sichtfenster 31 im Gerätegehäuse 1. Die maximale und minimale Einstellung des Drehmomentes wird durch einen .in der Anschlagbuchse 19 sitzenden Stift 32 begrenzt.A scale ring 29 is pressed onto the stop bush 19. A reading window 31 in the device housing 1 enables reading of the respectively set torque level. The maximum and minimum setting of the torque is limited by a pin 32 seated in the stop bushing 19.

Im Vorderbereich der Anschlagbuchse 19 ist ein Drehlager 33 für den vorderen Abschnitt 34 der Antriebsspindel 12 vorgesehen. Ferner sitzt vor dem Drehlager33 ein Dichtungsring 35. Ueber ein weiteres Gewinde 36 steht mit der Anschlagbuchse 19 ein Anschlussring 37 in Schraubverbindung, der Teil des Tiefenanschlages 6 ist.In the front region of the stop bush 19, a rotary bearing 33 is provided for the front section 34 of the drive spindle 12. Furthermore, a sealing ring 35 is located in front of the rotary bearing 33. A connecting ring 37, which is part of the depth stop 6, is in screw connection with the stop bush 19 via a further thread 36.

Die aus Kunststoff bestehende Betätigungshülse 5 trägt ein mit dieser fest verbundenes Verbindungselement 38 in Form eines eingegossenen Bolzens. Der nach vorne weisende freie Endbereich 38a des Verbindungselementes 38 ragt in eine Axialbohrung 37a des Anschlussringes 37 ein. Der gegenüberliegende hintere freie Endbereich 38b des Verbindungselementes 38 greift in Rastöffnungen 19b der Anschlagbuchse 19 ein, deren mehrere stirnseitig auf einer Kreisbahn angeordnet sind. In dieser Eingriffsstellung des Verbindungselementes 38 wird die Betätigungshülse 5 durch rastenden Eingriff eines an federbaren Fingern angeordneten Wulstes 5a in einer umlaufenden Nut 19c der Anschlagbuchse 19 gehalten.The actuating sleeve 5, which is made of plastic, carries a connecting element 38, which is firmly connected to it, in the form of a cast-in bolt. The forward end region 38a of the connecting element 38 projects into an axial bore 37a of the connecting ring 37. The opposite rear free end region 38b of the connecting element 38 engages in latching openings 19b of the stop bush 19, a plurality of which are arranged on a circular path on the end face. In this engagement position of the connecting element 38, the actuating sleeve 5 is held in a circumferential groove 19c of the stop bush 19 by the latching engagement of a bead 5a arranged on resilient fingers.

Für den Arbeitseinsatz des Schraubgerätes wird in eine Aufnahmeöffnung 39 der Antriebsspindel 12 der Schraubeinsatz 7 drehschlüssig eingesetzt. Im Schraubbetrieb ist der vordere Abschnitt 34 der Antriebsspindel 12 zum hinteren Abschnitt 22 hin verschoben, so dass durch gegenseitigen Eingriff von Klauenzahnkränzen 34a, 22b die Antriebsspindel 12 eine drehschlüssige Einheit bildet.For the work use of the screwing device, the screwing insert 7 is inserted in a rotationally locking manner into a receiving opening 39 of the drive spindle 12. In the screwing operation, the front section 34 of the drive spindle 12 is displaced toward the rear section 22, so that the drive spindle 12 forms a rotationally locking unit through mutual engagement of dog gear rings 34a, 22b.

Das von der Antriebswelle 8 eingeleitete Drehmoment wird so über die Drehmomentbegrenzungskupplung 21 auf die Antriebsspindel 12 und von dieser auf den Schraubeinsatz 7 übertragen.The torque introduced by the drive shaft 8 is thus transmitted to the drive spindle 12 via the torque limiting clutch 21 and from there to the screw insert 7.

Das von der Drehmomentbegrenzungskupplung 21 übertragbare Drehmoment wird durch Aenderung der axialen Position der Anschlagbuchse 19 eingestellt. Hierzu muss diese verdreht werden, was mit Hilfe der Betätigungshülse 5 bewerkstelligt wird. Ein manuelles Verdrehen der Betätigungshülse 5 bewirkt aufgrund des Eingriffs des Verbindungselementes 38 in einer der Rastöffnungen 19b die drehschlüssige Mitnahme der Anschlagbuchse 19. Diese wird dabei über das Gewinde 25 axial versetzt.The torque that can be transmitted by the torque limiting clutch 21 is set by changing the axial position of the stop bushing 19. For this purpose, this must be rotated, which is accomplished with the aid of the actuating sleeve 5. A manual rotation of the actuating sleeve 5, due to the engagement of the connecting element 38 in one of the latching openings 19b, causes the stop sleeve 19 to be rotatably entrained. This is offset axially via the thread 25.

Zum Verstellen des Tiefenanschlages 6 bedarf es einer axialen Versetzung des Anschlussringes 37. Hierzu wird die Betätigungshülse 5 bis zum Auflaufen an einem in der Anschlagbuchse 19 gehaltenen Stoppring 41 vorgezogen. Das Verbindungseiement 38 gelangt dadurch ausser Eingriff mit der Anschlagbuchse 19. Anschliessendes Verdrehen der Betätigungshülse 5 bewirkt durch den Eingriff des Endbereichs 38a die Drehmitnahme des Anschlussringes 37, so dass dieser über das Gewinde 36 gegenüber der Anschlagbuchse 19 axial versetzt wird. Dabei unterbindet die in Rastposition befindliche Rastkugel 26 ein Mitdrehen der Anschlagbuchse 19. Die Figur 3 zeigt eine solche versetzte Position und verdeutlicht zudem das Anstehen des Wulstes 5a unter Vorspannung an einer nach vorne gewandten Stützflanke 19d der Änschlagbuchse 19. Ein Umsetzen der Betätigungshülse 5 in die der Figur 2 entnehmbare Funktionsstellung ist somit nur nach dem Ueberfahren der Stützflanke 19d möglich, wozu von der Bedienungsperson eine entsprechende Verschiebekraft aufzubringen ist.In order to adjust the depth stop 6, an axial displacement of the connecting ring 37 is required. For this purpose, the actuating sleeve 5 is pulled up to a stop ring 41 held in the stop bush 19 until it comes up against it. The connecting element 38 thereby disengages from the stop bushing 19. Subsequent rotation of the actuating sleeve 5 causes the connecting ring 37 to be rotated by the engagement of the end region 38a, so that it is axially offset relative to the stop bushing 19 via the thread 36. The latching ball 26, which is in the latching position, prevents the stop bush 19 from rotating as well. FIG. 3 shows such an offset position and also illustrates the abutment of the bead 5a under pretension on a support flank 19d facing the front of the stop bush 19. The actuating sleeve 5 is moved into the The functional position shown in FIG. 2 is therefore only possible after the support flank 19d has been passed over, for which purpose the operator has to apply a corresponding displacement force.

Claims (2)

1. A motor-operated screw driver tool comprising an adjustable torque limitation clutch (21) arranged between a driving unit and a driving spindle (12) for the tool (7), a stop bush (19) which is adjustable relative to the tool housing (1) and in which is supported a spring element (16) which is adjustable for the setting of the torque limitation clutch, in which respect the stop bush (19) carries a depth stop (6) which is axially adjustable relative thereto by a screw connection and to which an actuating sleeve (5) is connected in a torsion- locking and axially displaceable manner, characterised in that the depth stop (6) has a connection ring (37) which serves for its rotation-locking connection to the actuating sleeve (5) and which, for adjustment, stands in screw connection by way of a thread (36) with the stop bush (19), the stop bush (19) communicates by way of a thread (25) with the tool housing (1) so as to be displaceable by rotation, and the actuating sleeve (5) has a connection element (38) which is connected in rotation-locking manner to the connection ring (37) and which by displacement of the actuating sleeve (5) enters into rotation-locking connection with the stop bush (19).
2. A tool according to claim 1, characterised in that detent elements (5a/19c, 19d/41) for securing the actuating sleeve (5) both in the position in which it is secured in rotation-locking manner relative to the stop bush (19) and in the position in which it is displaced axially thereto and freely rotatable relative to the stop bush (19) are provided on the actuating sleeve (5) and on. the stop bush (19).
EP85810344A 1984-09-03 1985-07-25 Power-driven screw driver Expired EP0178252B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810344T ATE34529T1 (en) 1984-09-03 1985-07-25 MOTORIZED WRENCH TOOL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843432382 DE3432382A1 (en) 1984-09-03 1984-09-03 MOTORIZED SCREWDRIVER
DE3432382 1984-09-03

Publications (3)

Publication Number Publication Date
EP0178252A2 EP0178252A2 (en) 1986-04-16
EP0178252A3 EP0178252A3 (en) 1986-07-09
EP0178252B1 true EP0178252B1 (en) 1988-05-25

Family

ID=6244552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810344A Expired EP0178252B1 (en) 1984-09-03 1985-07-25 Power-driven screw driver

Country Status (12)

Country Link
US (1) US4630512A (en)
EP (1) EP0178252B1 (en)
JP (1) JPS6165785A (en)
AT (1) ATE34529T1 (en)
AU (1) AU573150B2 (en)
CA (1) CA1276818C (en)
DE (2) DE3432382A1 (en)
DK (1) DK156885C (en)
ES (1) ES8701007A1 (en)
FI (1) FI80397C (en)
NO (1) NO161544C (en)
YU (1) YU44568B (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510605A1 (en) * 1985-03-23 1986-10-02 C. & E. Fein Gmbh & Co, 7000 Stuttgart CLUTCH FOR POWER DRIVEN SCREW TOOLS
US4809572A (en) * 1986-12-09 1989-03-07 Makita Electric Works, Ltd. Power driven screwdriver
DE3912790A1 (en) * 1989-04-19 1990-10-25 Metabowerke Kg DEVICE FOR THE DETACHABLE DRIVE OF A SCREW SPINDLE
DE3918227C1 (en) * 1989-06-03 1990-11-15 C. & E. Fein Gmbh & Co, 7000 Stuttgart, De
JPH0641811Y2 (en) * 1989-12-01 1994-11-02 日立工機株式会社 Screw driver
US5025903A (en) * 1990-01-09 1991-06-25 Black & Decker Inc. Dual mode rotary power tool with adjustable output torque
DE4123349C1 (en) * 1991-07-15 1993-03-04 Fein C & E Screwdriver with variable torque setting
JP3071523B2 (en) * 1991-10-08 2000-07-31 株式会社マキタ Detent device in screw driver
JP3071563B2 (en) * 1992-05-20 2000-07-31 株式会社マキタ Clutch device for screw driver
US5372206A (en) * 1992-10-01 1994-12-13 Makita Corporation Tightening tool
US5380132A (en) * 1993-09-10 1995-01-10 Black & Decker Inc. Depth adjusting system for a power tool
US5689891A (en) * 1994-12-13 1997-11-25 Milwaukee Electric Tool Corp. Clutch mechanism for reciprocating saws
USRE37211E1 (en) 1994-12-13 2001-06-12 Milwaukee Electric Tool Corporation Clutch mechanism for reciprocating saws
US5607023A (en) * 1994-12-13 1997-03-04 Milwaukee Electric Tool Corp. Impact absorption mechanism for power tools
US5566458A (en) * 1994-12-13 1996-10-22 Milwaukee Electric Tool Corporation Clutch mechanism for reciprocating saws
US5538089A (en) * 1995-06-05 1996-07-23 The Black & Decker Corporation Power tool clutch assembly
US5601387A (en) * 1995-06-07 1997-02-11 Black & Decker Inc. Depth adjusting system for a power tool
US5690005A (en) * 1995-09-22 1997-11-25 General Electric Company Tool for remotely installing and torquing tie rod nut with limited vertical access
DE19809133B4 (en) * 1998-03-04 2012-07-19 Scintilla Ag Hand tool, in particular drill
DE10103544A1 (en) * 2001-01-26 2002-08-01 Hilti Ag screwdriving
US6758116B2 (en) 2001-06-28 2004-07-06 Porter-Cable/Delta Depth adjusting system for a screw gun
US7047848B2 (en) * 2001-06-29 2006-05-23 Portar-Cable/Delta Manufacture of steel components for screw gun clutches
US6665923B2 (en) 2001-06-29 2003-12-23 Porter-Cable/Delta Clutch for a screw gun and utilizing method
AU148142S (en) 2001-09-15 2002-06-12 Positec Power Tools Europe Ltd Power tool
USD468610S1 (en) 2001-12-17 2003-01-14 Kuo Cheng Chien Gun screwdriver
AU151679S (en) 2002-02-14 2003-05-12 Black & Decker Inc A drill such as a hammer drill
GB0210029D0 (en) * 2002-05-02 2002-06-12 Black & Decker Inc Detent mechanism
DE10360282A1 (en) * 2003-12-20 2005-07-14 Hilti Ag Hand drill with low noise torque coupling
TW200918249A (en) * 2007-10-19 2009-05-01 Chia-Chiung Chuang Mechanism for stabilizing output torque of transmission member
GB2568911B (en) * 2017-11-30 2021-08-11 Quantum Tuner Ltd Improved torque device for tuning drums
US12427584B2 (en) 2020-11-30 2025-09-30 Techtronic Cordless Gp Rotary tool with axial adjustment mechanism

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670644A (en) * 1951-07-19 1954-03-02 Thor Power Tool Co Attachment for power-driven rotary tools
DE1254549B (en) * 1955-02-07 1967-11-16 Licentia Gmbh Power tool with an axially displaceable sleeve for loosening insert tools and a slip clutch with spring
US2796161A (en) * 1955-07-26 1957-06-18 Clinton L Graybill Hydraulically actuated attachment for power-driven tool chucks
US3454059A (en) * 1967-10-02 1969-07-08 Black & Decker Mfg Co Attaching and adjusting construction for depth locating accessory
US3527273A (en) * 1968-01-24 1970-09-08 Rockwell Mfg Co Adjustable means of limiting driving depth with attachable nosepiece
GB1208212A (en) * 1968-03-18 1970-10-07 Wolf Electric Tools Ltd Improvements relating to electric screwdrivers
US3834252A (en) * 1973-06-11 1974-09-10 Black & Decker Mfg Co Adjustable positive clutch screwdriver
SE377900B (en) * 1974-01-15 1975-08-04 Atlas Copco Ab
US3869942A (en) * 1974-02-04 1975-03-11 Textron Inc Driving tool
US3942337A (en) * 1974-09-16 1976-03-09 Industrial Analytics Inc. Torque limiting device
US3943800A (en) * 1975-02-18 1976-03-16 Chicago Pneumatic Tool Company Portable screw driving tool having screw depth control feature
DE3242862A1 (en) * 1982-11-19 1984-05-24 Hilti Ag, Schaan HAND DEVICE WITH ADJUSTABLE DEPTH STOP
DE3330962A1 (en) * 1983-08-27 1985-03-21 Eberhard Dipl.-Ing. Beyhl (FH), 8503 Altdorf Screw-limiting device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Typ 1410.7 entsprechend BOSCH Katalog EW-WEB 1/130 (2B4) H *

Also Published As

Publication number Publication date
DK399685A (en) 1986-03-04
DE3432382A1 (en) 1986-03-13
FI853353L (en) 1986-03-04
YU130985A (en) 1988-06-30
AU4641185A (en) 1986-03-13
FI80397C (en) 1990-06-11
FI80397B (en) 1990-02-28
NO161544C (en) 1989-08-30
DK156885C (en) 1990-04-09
JPH0536194B2 (en) 1993-05-28
EP0178252A2 (en) 1986-04-16
ATE34529T1 (en) 1988-06-15
DK399685D0 (en) 1985-09-02
FI853353A0 (en) 1985-09-02
CA1276818C (en) 1990-11-27
DK156885B (en) 1989-10-16
EP0178252A3 (en) 1986-07-09
AU573150B2 (en) 1988-05-26
ES8701007A1 (en) 1986-11-16
US4630512A (en) 1986-12-23
JPS6165785A (en) 1986-04-04
DE3562872D1 (en) 1988-06-30
ES546682A0 (en) 1986-11-16
NO853449L (en) 1986-03-04
YU44568B (en) 1990-10-31
NO161544B (en) 1989-05-22

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