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EP0249037B1 - Auxiliary handle for a hand drill - Google Patents

Auxiliary handle for a hand drill Download PDF

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Publication number
EP0249037B1
EP0249037B1 EP87106804A EP87106804A EP0249037B1 EP 0249037 B1 EP0249037 B1 EP 0249037B1 EP 87106804 A EP87106804 A EP 87106804A EP 87106804 A EP87106804 A EP 87106804A EP 0249037 B1 EP0249037 B1 EP 0249037B1
Authority
EP
European Patent Office
Prior art keywords
auxiliary handle
clamping
handle according
clamping ring
stop
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
EP87106804A
Other languages
German (de)
French (fr)
Other versions
EP0249037A2 (en
EP0249037A3 (en
Inventor
Ernoe Szily
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.)
Scintilla AG
Original Assignee
Scintilla 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 Scintilla AG filed Critical Scintilla AG
Publication of EP0249037A2 publication Critical patent/EP0249037A2/en
Publication of EP0249037A3 publication Critical patent/EP0249037A3/en
Application granted granted Critical
Publication of EP0249037B1 publication Critical patent/EP0249037B1/en
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
    • 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
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
    • B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
    • 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
    • B25F5/003—Stops for limiting depth in rotary hand tools

Definitions

  • the invention is based on an additional handle of the type according to the preamble of claim 1.
  • Known additional handles of this type are constructed with a large number of individual parts and are therefore expensive to manufacture. Functionally, they have the disadvantage that they can only be pushed onto the spindle neck of the drilling machine in different rotational positions and this rotational position can only be corrected by pulling them off and pushing them back on again. This cumbersome handling takes a lot of time. The operator therefore often refrains from looking for the cheapest, most comfortable rotary position for the additional handle. This in turn leads to faster fatigue and can even be harmful to your health.
  • the additional handle according to the invention with the characterizing features of claim 1, in contrast, has the advantage of being easy to manufacture and of being able to be brought into the optimum rotational position relative to the hand drill.
  • a clamping ring By assigning a clamping ring to a spindle neck with longitudinal notches and an annular groove, which has an additional resilient tongue with a detent fitting into the longitudinal notches, the additional handle, once pushed on, can be rotated from longitudinal notch to longitudinal notch until the correct rotary position is found.
  • the latch spring resiliently without great resistance from a not yet suitable longitudinal notch and noticeably in the next.
  • the latch Due to the stop attached to the resilient part of the clamping ring and behind the latch back of the tongue, the latch can be blocked in the rotational position found within the selected longitudinal notch, simply by tightening the clamping ring. With the same spring stroke of the resilient part of the clamping ring, the rib can also engage in the annular groove on the spindle neck. The additional handle is positively secured against rotation as well as against longitudinal displacement by the clamping movement on the clamping ring.
  • FIG. 1 shows a partial view of an additional handle with the complete clamping ring
  • FIG. 2 shows a detail at A in FIG. 1, with the additional handle fixed
  • FIG. 3 shows a side view of a spindle neck of a corresponding hand drill
  • FIG. 4 shows a side view of FIG. 3.
  • An additional handle 2 can be attached to a spindle neck 1 of a hand drill.
  • This spindle neck 1 has longitudinal notches 3 and an annular groove 4.
  • a clamping ring 5 of the additional handle 2 is used for fastening.
  • This has a resilient part 6 and an additional resilient tongue 7 with a locking lug 8.
  • a stop 9 is attached to the resilient part 6. The stop surface of this stop 9 is behind the back of the locking lug 8, at a distance which corresponds approximately to the spring travel of the resilient part 6. This distance arises when the locking lug 8 engages in a longitudinal notch 3, but the clamping ring 5 has not yet been tightened.
  • Both projections 10 and 11 are connected at their outer end via an eyelet 13. Between the locking lug 8 and the projection 11, the resilient part 6 of the clamping ring 5 has a rib 14. This rib 14 is arranged such that it lies outside the spindle neck 1 when the clamping ring 5 is not tensioned, but when tightening it into the annular groove 4 of the spindle neck 1 can intervene.
  • the projection 10 has a guide 15 for a hexagonal rod 16. This guide 15 is open towards the slot 12 and also towards a subsequent recess 17. A resilient tongue 18 is formed in the recess 17, the resilient end of which rests against the surface of the hexagonal rod 16 facing it.
  • the surface of the hexagonal bar 16 facing the slot 12 is provided with teeth 19.
  • Matching teeth 20 on the projection 11 are juxtaposed with the teeth 19.
  • a clamping bolt 23 is inserted through mutually aligned bores 21 and 22 in the projections 10 and 11.
  • One end 24 of this clamping bolt 23 protrudes into a recess 25 behind the projection 10.
  • a washer 26 and a locking washer 27 the clamping bolt is supported on the rear surface of the projection 10.
  • the other end of the clamping bolt 23 protrudes from the rear of the projection 11 and there carries a rotary knob 28 with an axially acting cam track 29.
  • the cam track 29 is opposed to a ring 30 on the projection 11 with a corresponding cam track 31.
  • the clamping bolt 23 is secured in the same way as at the other end by means of a washer 26 and a locking washer 27.
  • the total stroke of the curved tracks 29 and 31 is distributed over an angle of rotation of the rotary knob 28 of approximately 130 ° . It corresponds to the required clamping stroke for tightening the clamping ring 5.
  • the clamping ring 5 is made in one piece with the actual handle 32 of the additional handle 2 from flexible plastic.
  • the state shown in FIG. 1 shows a released clamping ring 5 pushed onto the spindle neck 1 Latch 8 engages in the longitudinal notch 3 under the action of the tongue 7's own spring.
  • the additional handle 2 is still rotatable on the spindle neck 1 from rest to rest. It can also be moved axially.
  • the rotary knob 28 As soon as the rotary knob 28 is turned, its cam track 29 urges the resilient part 6 of the clamping ring 5 into the clamping position.
  • the rib 14 engages in the ring groove 4 and thus secures against axial displacement of the additional handle 2.
  • the stop 9 lies against the back of the locking lug 8 and blocks it in its locking position.
  • the additional handle is also secured against rotation on the spindle neck 1 (FIG. 2).
  • the teeth 19 and 20 interlock so that the hexagonal rod 16 serving as a depth stop is also fixed.
  • the rotary knob 28 is turned back.
  • the slot 12 opens, the rib 14 emerges from the annular groove 4 and the stop 9 from the back of the locking lug 8.
  • the tooth mesh between 19 and 20 is released.
  • the hexagonal rod 16 can be shifted in its guidance and the additional handle 2 can be shifted and / or rotated on the spindle neck 1.
  • a new rotational position or a different stop depth can thus be set or the additional handle 2 can be removed from the spindle neck 1.
  • Optimal use of the additional handle 2 is thus ensured with the least possible expenditure on parts and assembly time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Description

Die Erfindung geht aus von einem Zusatzhandgriff nach der Gattung gemäß dem Oberbegriff des Anspruchs 1. Bekannte Zusatzhandgriffe dieser Art sind mit einer Vielzahl von Einzelteilen aufgebaut und deshalb fertigungstechnisch aufwendig. Funktionell haben sie den Nachteil, daß man sie nur in verschiedenen Drehstellungen auf den Spindelhals der Bohrmaschine aufschieben kann und eine Korrektur dieser Drehstellung nur durch Abziehen und erneutes Aufschieben möglich ist. Diese umständliche Handhabung kostet viel Zeit. Der Bedienende verzichtet deshalb oft darauf, die günstigste, handschonenste Drehstellung für den Zusatzhandgriff aufzusuchen. Das wiederum führt zur schnelleren Ermüdung und kann sogar gesundheitlich schaden.The invention is based on an additional handle of the type according to the preamble of claim 1. Known additional handles of this type are constructed with a large number of individual parts and are therefore expensive to manufacture. Functionally, they have the disadvantage that they can only be pushed onto the spindle neck of the drilling machine in different rotational positions and this rotational position can only be corrected by pulling them off and pushing them back on again. This cumbersome handling takes a lot of time. The operator therefore often refrains from looking for the cheapest, most comfortable rotary position for the additional handle. This in turn leads to faster fatigue and can even be harmful to your health.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Zusatzhandgriff mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil einfach herstellbar und einfach in die optimale Drehstellung zur Handbohrmaschine bringbar zu sein. Dadurch, daß man einem Spindelhals mit Längskerben und einer Ringnut einen Spannring zuordnet, der eine zusätzliche federnde Zunge mit einer in die Längskerben passenden Rastnase hat, kann der einmal aufgeschobene Zusatzhandgriff von Längskerbe zu Längskerbe gedreht werden, bis die richtige Dreh stellung gefunden ist. Die Rastnase federd dabei ohne großen Widerstand aus einer noch nicht passenden Längskerbe aus und spürbar in die nächste wieder ein. Durch den am federnden Teil des Spannringes und hinter dem Rastnasenrücken der Zunge angebrachten Anschlag kann die Rastnase in der gefundenen Drehstellung innerhalb der gewählten Längskerbe blockiert werden, einfach durch Festziehen des Spannringes. Mit dem gleichen Federhub des federnden Teiles des Spannringes kann auch die Rippe in die Ringnut am Spindelhals eingreifen. So ist der Zusatzhandgriff durch die Spannbewegung am Spannring sowohl gegen Drehen als auch gegen Längsverschieben formschlüssig gesichert.The additional handle according to the invention with the characterizing features of claim 1, in contrast, has the advantage of being easy to manufacture and of being able to be brought into the optimum rotational position relative to the hand drill. By assigning a clamping ring to a spindle neck with longitudinal notches and an annular groove, which has an additional resilient tongue with a detent fitting into the longitudinal notches, the additional handle, once pushed on, can be rotated from longitudinal notch to longitudinal notch until the correct rotary position is found. The latch spring resiliently without great resistance from a not yet suitable longitudinal notch and noticeably in the next. Due to the stop attached to the resilient part of the clamping ring and behind the latch back of the tongue, the latch can be blocked in the rotational position found within the selected longitudinal notch, simply by tightening the clamping ring. With the same spring stroke of the resilient part of the clamping ring, the rib can also engage in the annular groove on the spindle neck. The additional handle is positively secured against rotation as well as against longitudinal displacement by the clamping movement on the clamping ring.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Zusatzhandgriffs möglich. Besonders vorteilhaft ist die Begrenzung des Spannweges auf weniger als eine Umdrehung mittels eines Bolzens, der einen Drehknopf mit axial wirkender Kurvenbahn trägt, die vom federnden Teil des Spannringes abgetastet wird.The measures listed in the subclaims permit advantageous developments and improvements of the additional handle specified in the main claim. It is particularly advantageous to limit the clamping path to less than one revolution by means of a bolt which carries a rotary knob with an axially acting cam track which is scanned by the resilient part of the clamping ring.

Zeichnungdrawing

Ein Ausführungsbeispiel des Erfindungsgegenstandes ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine Teilansicht eines Zusatzhandgriffs mit dem vollständigen Spannring, Figur 2 eine Einzelheit bei A in Figur 1, bei festgelegtem Zusatzhandgriff, Figur 3 eine Seitenansicht eines Spindelhalses einer entsprechenden Handbohrmaschine und Figur 4 eine Seitenansicht zu Figur 3.An embodiment of the subject of the invention is shown in the drawing and explained in more detail in the following description. FIG. 1 shows a partial view of an additional handle with the complete clamping ring, FIG. 2 shows a detail at A in FIG. 1, with the additional handle fixed, FIG. 3 shows a side view of a spindle neck of a corresponding hand drill and FIG. 4 shows a side view of FIG. 3.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Auf einem Spindelhals 1 einer Handbohrmaschine kann ein Zusatzhandgriff 2 befestigt werden. Dieser Spindelhals 1 besitzt Längskerben 3 und eine Ringnut 4. Zum Befestigen dient ein Spannring 5 des Zusatzhandgriffs 2. Dieser hat einen federnden Teil 6 und eine zusätzliche federnde Zunge 7 mit einer Rastnase 8. Außerdem ist am federnden Teil 6 ein Anschlag 9 angebracht. Die Anschlagfläche dieses Anschlags 9 liegt hinter dem Rücken der Rastnase 8, mit einem Abstand, der etwa dem Federweg des federnden Teils 6 entspricht. Dieser Abstand stellt sich ein, wenn die Rastnase 8 in eine Längskerbe 3 eingerastet, der Spannring 5 aber noch nicht festgespannt ist. Am festen und am federnden Teil 6 des Spannrings 5 sind zwei nach außen gerichtete Vorsprünge 10 und 11 angebracht, die einen Schlitz 12 bilden. Beide Vorsprünge 10 und 11 sind an ihrem äußeren Ende über eine Öse 13 verbunden. Zwischen der Rastnase 8 und dem Vorsprung 11 hat der federnde Teil 6 des Spannrings 5 eine Rippe 14. Diese Rippe 14 ist so angeordnet, daß sie bei nicht gespanntem Spannring 5 außerhalb des Spindelhalses 1 liegt, beim Festspannen aber in die Ringnut 4 des Spindelhalses 1 eingreifen kann. Der Vorsprung 10 hat eine Führung 15 für einen Sechskantstab 16. Diese Führung 15 ist zum Schlitz 12 hin offen und zu einer anschließenden Ausnehmung 17 hin ebenfalls. In die Ausnehmung 17 ist eine federnde Zunge 18 eingeformt, deren federndes Ende sich an die ihr zugewendete Fläche des Sechskantstabes 16 anlegt. Sie hält so den Sechskantstab 16 bei nicht aufgespanntem Spannring 5 reibungsschlüssig in seiner Führung 15 fest. Die dem Schlitz 12 zugewendete Fläche des Seckskantstabes 16 ist mit Zähnen 19 versehen. Den Zähnen 19 sind passende Zähne 20 am Vorsprung 11 gegenübergestellt. Durch miteinander fluchtende Bohrungen 21 und 22 in den Vorsprüngen 10 und 11, ist ein Spannbolzen 23 gesteckt. Das eine Ende 24 dieses Spannbolzens 23 ragt in eine Ausnehmung 25 hinter dem Vorsprung 10. Mittels einer Unterlegscheibe 26 und einer Sicherungsscheibe 27 stützt sich der Spann bolzen an der Rückfläche des Vorsprungs 10 ab. Das andere Ende des Spannbolzens 23 ragt aus der Rückseite des Vorsprungs 11 hervor und trägt dort einen Drehknopf 28 mit einer axial wirkenden Kurvenbahn 29. Der Kurvenbahn 29 ist ein Ring 30 am Vorsprung 11 mit einer entsprechenden Kurvenbahn 31 gegenübergestellt. Im Drehknopf 28 ist der Spannbolzen 23, in gleicher Weise wie am anderen Ende, mittels einer Unterlegscheibe 26 und einer Sicherungsscheibe 27 gesichert. Der Gesamthub der Kurvenbahnen 29 und 31 ist auf etwa 130° Drehwinkel des Drehknopfes 28 verteilt. Er entspricht dem erforderlichen Spannhub zum Festspannen des Spannrings 5. Der Spannring 5 ist einstückig mit der eigentlichen Handhabe 32 des Zusatzhandgriffs 2 aus biegeelastischem Kunststoff hergestellt. Der in Figur 1 gezeigte Zustand zeigt einen gelösten, auf den Spindelhals 1 aufgeschobenen Spannring 5. Die Rastnase 8 greift unter der Wirkung der Eigenfederung der Zunge 7 in eine Längskerbe 3 ein. So ist der Zusatzhandgriff 2 noch auf dem Spindelhals 1 drehbar von Rast zu Rast. Er kann auch noch axial verschoben werden. Sobald der Drehknopf 28 verdreht wird, drängt er mit seiner Kurvenbahn 29 den federnden Teil 6 des Spannrings 5 in Spannstellung. Die Rippe 14 greift in die Ringnug 4 ein und sichert so gegen axiales Verschieben des Zusatzhandgriffs 2. Der Anschlag 9 legt sich an den Rücken der Rastnase 8 und blockiert diese in ihrer Raststellung. So ist der Zusatzhandgriff auch gegen Verdrehen auf dem Spindelhals 1 gesichert (Figur 2). Die Zähne 19 und 20 greifen ineinander, so daß auch der als Tiefenanschlag dienende Sechskantstab 16 festgelegt ist. Zum Lösen des Zusatzhandgriffs 2 wird der Drehknopf 28 zurückgedreht. Der Schlitz 12 öffnet sich, die Rippe 14 tritt aus der Ringnut 4 heraus und der Anschlag 9 vom Rücken der Rastnase 8 zurück. Der Zahneingriff zwischen 19 und 20 wird gelöst. Nun können der Sechskantstab 16 in seiner Führung verschoben und der Zusatzhandgriff 2 auf dem Spindelhals 1 verschoben und/oder gedreht werden. So läßt sich eine neue Drehstellung bzw. eine andere Anschlagtiefe einstellen oder auch der Zusatzhandgriff 2 vom Spindelhals 1 abnehmen. Mit denkbar geringem Aufwand an Teilen und Montagezeit ist so eine optimale Verwendung des Zusatzhandgriffs 2 gesichert.An additional handle 2 can be attached to a spindle neck 1 of a hand drill. This spindle neck 1 has longitudinal notches 3 and an annular groove 4. A clamping ring 5 of the additional handle 2 is used for fastening. This has a resilient part 6 and an additional resilient tongue 7 with a locking lug 8. In addition, a stop 9 is attached to the resilient part 6. The stop surface of this stop 9 is behind the back of the locking lug 8, at a distance which corresponds approximately to the spring travel of the resilient part 6. This distance arises when the locking lug 8 engages in a longitudinal notch 3, but the clamping ring 5 has not yet been tightened. On the fixed and on the resilient part 6 of the clamping ring 5, two outward projections 10 and 11 are attached, which form a slot 12. Both projections 10 and 11 are connected at their outer end via an eyelet 13. Between the locking lug 8 and the projection 11, the resilient part 6 of the clamping ring 5 has a rib 14. This rib 14 is arranged such that it lies outside the spindle neck 1 when the clamping ring 5 is not tensioned, but when tightening it into the annular groove 4 of the spindle neck 1 can intervene. The projection 10 has a guide 15 for a hexagonal rod 16. This guide 15 is open towards the slot 12 and also towards a subsequent recess 17. A resilient tongue 18 is formed in the recess 17, the resilient end of which rests against the surface of the hexagonal rod 16 facing it. In this way, it holds the hexagonal rod 16 frictionally in its guide 15 when the clamping ring 5 is not clamped. The surface of the hexagonal bar 16 facing the slot 12 is provided with teeth 19. Matching teeth 20 on the projection 11 are juxtaposed with the teeth 19. A clamping bolt 23 is inserted through mutually aligned bores 21 and 22 in the projections 10 and 11. One end 24 of this clamping bolt 23 protrudes into a recess 25 behind the projection 10. By means of a washer 26 and a locking washer 27, the clamping bolt is supported on the rear surface of the projection 10. The other end of the clamping bolt 23 protrudes from the rear of the projection 11 and there carries a rotary knob 28 with an axially acting cam track 29. The cam track 29 is opposed to a ring 30 on the projection 11 with a corresponding cam track 31. In the rotary knob 28, the clamping bolt 23 is secured in the same way as at the other end by means of a washer 26 and a locking washer 27. The total stroke of the curved tracks 29 and 31 is distributed over an angle of rotation of the rotary knob 28 of approximately 130 ° . It corresponds to the required clamping stroke for tightening the clamping ring 5. The clamping ring 5 is made in one piece with the actual handle 32 of the additional handle 2 from flexible plastic. The state shown in FIG. 1 shows a released clamping ring 5 pushed onto the spindle neck 1 Latch 8 engages in the longitudinal notch 3 under the action of the tongue 7's own spring. So the additional handle 2 is still rotatable on the spindle neck 1 from rest to rest. It can also be moved axially. As soon as the rotary knob 28 is turned, its cam track 29 urges the resilient part 6 of the clamping ring 5 into the clamping position. The rib 14 engages in the ring groove 4 and thus secures against axial displacement of the additional handle 2. The stop 9 lies against the back of the locking lug 8 and blocks it in its locking position. The additional handle is also secured against rotation on the spindle neck 1 (FIG. 2). The teeth 19 and 20 interlock so that the hexagonal rod 16 serving as a depth stop is also fixed. To release the additional handle 2, the rotary knob 28 is turned back. The slot 12 opens, the rib 14 emerges from the annular groove 4 and the stop 9 from the back of the locking lug 8. The tooth mesh between 19 and 20 is released. Now the hexagonal rod 16 can be shifted in its guidance and the additional handle 2 can be shifted and / or rotated on the spindle neck 1. A new rotational position or a different stop depth can thus be set or the additional handle 2 can be removed from the spindle neck 1. Optimal use of the additional handle 2 is thus ensured with the least possible expenditure on parts and assembly time.

Claims (8)

1. Auxiliary handle (2) for portable drills which can be clamped onto the spindle neck (1) of the drill and secured against rotation and axial displacement, characterized in that, allocated to a spindle neck (1) having longitudinal notches (3) distributed over its periphery and an annular groove (4), it has a sht. elastic clamping ring (5) which, on its elastic part (6) has a rib (14) fitting into the annular groove (4), an elastic tongue (7) having a detent (8) fitting into the longitudinal notches (3), and a stop (9) arranged behind the back of the detent (8) of the tongue (7).
2. Auxiliary handle according to Claim 1, characterized in that the distance of the stop surface of the stop (9) from the detent back of the tongue (7). when the detent (8) is snapped in, approximately corresponds to the engagement stroke of the rib (14) into the annular groove (4).
3. Auxiliary handle according to Claim 1, characterized in that a clamping screw (23) having clamping travel limited to less than one rotation is allocated to the slit clamping ring (5).
4. Auxiliary handle according to Claim 3, characterized in that, instead of a clamping screw, a clamping bolt (23) is used which carries a rotary knob (28) having an axially acting curved sector (29) which the elastic part (6) of the clamping ring (5) follows and which is distributed preferably over a rotational angle of 130°.
5. Auxiliary handle according to Claim 3, characterized in that the clamping ring (5) has two projections (10, 11), directed outwards, for accommodating the clamping bolt (23) or the clamping screw, which projections (10, 11 ) are separated by a slot (12), and in that catch teeth (20) are put into this slot (12), variable by spring action of the clamping ring (5), on one projection (11), which catch teeth (20) are intended for meshing with corresponding catch teeth (19) on a hexagon bar (16) guided to it (sic) opposite projection (10) and sewing as a stop.
6. Auxiliary handle according to Claim 5, characterized in that the guide (15) for the hexagon bar (16) has a widened portion (17) into which a spring tongue (18) is placed which holds the hexagon bar (16) frictionally in its guide (15) when the auxiliary handle (2) is not fastened in place.
7. Auxiliary handle according to Claim 5, characterized in that the projections (10, 11) are connected at their outer end by an eye (13).
8. Auxiliary handle according to Claim 1 or any of Claims 1 to 7, characterized in that, apart from the clamping screw (23) and the hexagon bar (16), it is made of flexible plastic in one piece.
EP87106804A 1986-06-10 1987-05-11 Auxiliary handle for a hand drill Expired - Lifetime EP0249037B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863619520 DE3619520A1 (en) 1986-06-10 1986-06-10 ADDITIONAL HANDLE FOR HAND DRILLING MACHINES
DE3619520 1986-06-10

Publications (3)

Publication Number Publication Date
EP0249037A2 EP0249037A2 (en) 1987-12-16
EP0249037A3 EP0249037A3 (en) 1988-07-27
EP0249037B1 true EP0249037B1 (en) 1990-08-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106804A Expired - Lifetime EP0249037B1 (en) 1986-06-10 1987-05-11 Auxiliary handle for a hand drill

Country Status (2)

Country Link
EP (1) EP0249037B1 (en)
DE (2) DE3619520A1 (en)

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AT385447B (en) * 1984-10-12 1988-03-25 Vnii Pk I Mechanizirovannogo ADDITIONAL HANDLE FOR PORTABLE, POWER-DRIVEN TOOLS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11318589B2 (en) 2018-02-19 2022-05-03 Milwaukee Electric Tool Corporation Impact tool
US11964368B2 (en) 2018-02-19 2024-04-23 Milwaukee Electric Tool Corporation Impact tool

Also Published As

Publication number Publication date
EP0249037A2 (en) 1987-12-16
EP0249037A3 (en) 1988-07-27
DE3619520A1 (en) 1987-12-17
DE3764196D1 (en) 1990-09-13

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