EP0645194B1 - Hand-actuated tool - Google Patents

Hand-actuated tool Download PDF

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Publication number
EP0645194B1
EP0645194B1 EP94114850A EP94114850A EP0645194B1 EP 0645194 B1 EP0645194 B1 EP 0645194B1 EP 94114850 A EP94114850 A EP 94114850A EP 94114850 A EP94114850 A EP 94114850A EP 0645194 B1 EP0645194 B1 EP 0645194B1
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EP
European Patent Office
Prior art keywords
push rod
handle
blocks
housing
respect
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EP94114850A
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German (de)
French (fr)
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EP0645194A3 (en
EP0645194A2 (en
Inventor
Slobodan Dr. Tepic
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AO Research Institute
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AO Research Institute
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like

Definitions

  • the invention relates to a hand-operated tool with a pivotable handle relative to a housing with the features of the preamble of patent claim 1.
  • Hand-operated tools with a pivotable handle relative to a pistol-like housing of the tool, by means of which a push rod mounted in the housing can be gradually and axially adjusted have become known in various embodiments.
  • Such hand-operated tools are shown and described, for example, in the publications listed below: GB-PS 703 780; GB-PS 1,011,470; U.S. Patent 2,530,359; U.S. Patent 2,582,156; U.S. Patent 2,726,802; U.S. Patent 4,009,804; U.S. Patent 4,135,644; U.S. Patent 4,338,925; U.S. Patent 4,566,610; U.S. Patent 5,052,243; EU-OS 108 584; WO 89/01322.
  • Hand-operated tools of this type are usually used to press out a mass located in a cartridge with the push rod, which carries a piston at one end, the cartridge being fixable in or on the housing of the tool. By actuating the handle, the push rod with its piston is gradually pushed into the cartridge and the mass in it is squeezed out.
  • Such tools are used, for example, in the construction industry for laying sealing compounds, but such tools with this structure are also known for other purposes.
  • the push rod In order to axially move the push rod due to the periodic movement of the pivotable handle, a toothing is provided on the push rod (EU-OS 108 584; US Pat. No. 4,135,644) into which a pawl connected to the handle engages. Since considerable forces are effective at this point of engagement, the intermeshing parts wear out very quickly, so that the tool is then unusable.
  • the push rod was designed to be smooth and a square block to be attached to it (GB-PS 703 780; GB-PS 1 011 470; US-PS 2 530 359; US-PS 2 582 156; US-PS 2 726,802; U.S. Patent 4,009,804; U.S.
  • Patent 4,338,925; U.S. Patent 4,566,610; U.S. Patent 5,052,243; WO 89/01322) which can be actuated by the handle directly or via a translation.
  • This cantilever block is pressed against a stop by a helical spring fully penetrated by the push rod, for example on the handle in its rest position. If the handle is now pivoted, the square block is inclined with respect to the axis of the push rod, it jams on the push rod and pulls it along as a result.
  • This mechanism is provided between two bearings that support the push rod.
  • FR-PS 1 543 996 (cf. preamble of the first claim) should be mentioned in particular.
  • the push rod penetrates a slide supported by a spring on the housing, in which contact bolts, which are arranged in pairs on axle bolts and are held in a starting position by means of coil springs, with their corner edges projecting rearward relative to the slide, via the handle movable pusher or driver.
  • the functionality of this device appears questionable for several reasons, especially when higher press-out forces are to be generated.
  • the bearing bolts provided here for the storage of the contact block can, since it is a hand-operated device, only be of relatively small dimensions, taking into account the forces occurring here, it must be assumed that these small bearing bolts do not without the load acting on them To take damage.
  • the contact blocks arranged in pairs are position-oriented, so that this does not ensure that both contact blocks are in an identical manner act on the push rod and thus the desired exact symmetry of the pushing force cannot be achieved with sufficient accuracy, which leads to the undesirable eccentric loading of the push rod. Due to the lateral contact with a corner edge of a square block on the push rod, high local loads occur.
  • the aim and purpose of the present invention is to keep the bearings free of this load and to convert the force that can be applied via the handle as undiminished and completely as possible into thrust force and, furthermore, to divide the forces to be transmitted from the contact block to the push rod, which is achieved according to the invention by those measures, the content and subject of the characterizing part of claim 1.
  • the tool with which sealing compounds can be pressed out of cartridges, for example, has a pistol-like housing 1, in which a push rod 2 with a piston 3 is axially displaceably mounted.
  • This push rod 2 is supported by three bearings 4, 5 and 6 on the housing side.
  • a frame 7 on the housing side serves to receive and fix the cartridge, which is not shown here, which contains the sealing compound to be pressed out.
  • each square block 8 is essentially designed as a cuboid plate which has an opening or bore 9 in its one section, the diameter of which is slightly larger is as the diameter of the push rod 2.
  • this square block 8 in which the bore 9 is provided for the passage of the push rod 2 and with which they overlap each other, these are cuboid
  • the platelets are stepped and have a lower thickness here than in the section facing away from the push rod 2.
  • a helical spring 10 which is supported in the housing 1 and is penetrated by the push rod 2, rests with its other end on an edge block 8.
  • the fork arms 11 of the handle 12 pivotable about the axis 13 rest.
  • An imaginary connecting line between the two contact points lies essentially parallel to the pivot axis 13 of the handle 12.
  • brake blocks 14 are also provided, also in pairs - with respect to the axis of the push rod 2 - in a symmetrical arrangement, which are held in their rest position by a coil spring 15 are supported on the one hand on one of the brake blocks 14 and on the other hand on a part of the housing 1.
  • These brake blocks 14 are shaped identically to the square blocks 8. With their outer sections, they rest on bearings on the housing side.
  • a switching pin 16 is mounted displaceably against the force of a spring 17, the inner end of which rests on one of the brake blocks 14 provided in pairs.
  • the fork arms 11 of the handle 12 act directly on the square block 8 and engage it, it is within the scope of the invention to provide a transmission mechanism between the handle 12 and the square block 8, possibly with a suitable translation.
  • the aim of the invention, to keep the push rod 2 free of bending forces as far as possible, is only achieved to a limited extent in this case.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Description

Die Erfindung bezieht sich auf ein handbetätigtes Werkzeug mit einem gegenüber einem Gehäuse verschwenkbaren Handgriff mit den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a hand-operated tool with a pivotable handle relative to a housing with the features of the preamble of patent claim 1.

Handbetätigte Werkzeuge mit einem gegenüber einem pistolenartigen Gehäuse des Werkzeuges verschwenkbaren Handgriff, durch welchen eine im Gehäuse gelagerte Schubstange schrittweise und axial verstellbar sind, sind in verschiedenen Ausführungsformen bekannt geworden. Solche handbetätigte Werkzeuge sind beispielsweise in den nachstehend angeführten Veröffentlichungen dargestellt und beschrieben: GB-PS 703 780; GB-PS 1 011 470; US-PS 2 530 359; US-PS 2 582 156; US-PS 2 726 802; US-PS 4 009 804; US-PS 4 135 644; US-PS 4 338 925; US-PS 4 566 610; US-PS 5 052 243; EU-OS 108 584; WO 89/01322.Hand-operated tools with a pivotable handle relative to a pistol-like housing of the tool, by means of which a push rod mounted in the housing can be gradually and axially adjusted, have become known in various embodiments. Such hand-operated tools are shown and described, for example, in the publications listed below: GB-PS 703 780; GB-PS 1,011,470; U.S. Patent 2,530,359; U.S. Patent 2,582,156; U.S. Patent 2,726,802; U.S. Patent 4,009,804; U.S. Patent 4,135,644; U.S. Patent 4,338,925; U.S. Patent 4,566,610; U.S. Patent 5,052,243; EU-OS 108 584; WO 89/01322.

Handbetätigte Werkzeuge dieser Art dienen in der Regel dazu, mit der Schubstange, die an ihrem einen Ende einen Kolben trägt, eine in einer Kartusche befindliche Masse auszupressen, wobei die Kartusche im bzw. am Gehäuse des Werkzeuges festlegbar ist. Durch die Betätigung des Handgriffes wird die Schubstange mit ihrem Kolben schrittweise in die Kartusche hineingedrückt und dabei die in ihr befindliche Masse ausgepreßt. Solche Werkzeuge werden beispielsweise in der Bauindustrie verwendet zur Verlegung von Dichtmassen, doch auch für andere Einsatzzwecke sind solche Werkzeuge mit diesem Aufbau bekannt.Hand-operated tools of this type are usually used to press out a mass located in a cartridge with the push rod, which carries a piston at one end, the cartridge being fixable in or on the housing of the tool. By actuating the handle, the push rod with its piston is gradually pushed into the cartridge and the mass in it is squeezed out. Such tools are used, for example, in the construction industry for laying sealing compounds, but such tools with this structure are also known for other purposes.

Um die Schubstange durch die periodische Bewegung des verschwenkbaren Handgriffes axial zu verschieben, ist an der Schubstange eine Zahnung vorgesehen (EU-OS 108 584; US-PS 4 135 644), in welche eine mit dem Handgriff verbundene Klinke eingreift. Da an dieser Eingreifstelle doch erhebliche Kräfte wirksam sind, verschleißen die miteinander kämmenden Teile sehr rasch, so daß dann das Werkzeug unbrauchbar wird. In der Weiterentwicklung solcher Werkzeuge wurde dazu übergegangen die Schubstange glatt auszubilden und an ihr einen Kantkloben anzusetzen (GB-PS 703 780; GB-PS 1 011 470; US-PS 2 530 359; US-PS 2 582 156; US-PS 2 726 802; US-PS 4 009 804; US-PS 4 338 925; US-PS 4 566 610; US-PS 5 052 243; WO 89/01322), der vom Handgriff direkt oder über eine Übersetzung betätigbar ist. Dieser Kantkloben wird dabei von einer voll der Schubstange durchsetzten Schraubenfeder gegen einen Anschlag gedrückt, beispielsweise an den in seiner Ruhestellung befindlichen Handgriff. Wird nun der Handgriff verschwenkt, so wird der Kantkloben gegenüber der Achse der Schubstange schräggestellt, er verklemmt sich an der Schubstange und zieht diese in der Folge mit. Diese Mechanik ist zwischen zwei die Schubstange tragenden Lagern vorgesehen. Mit herkömmlichen Geräten der gegenständlichen Art sind Preßkräfte bis maximal 800 N (80 kg) aufzubringen, wobei am Angriffspunkt des Kantklobens an der Schubstange ein Mehrfaches dieser Kraft auftritt. Im Grunde hat sich diese Verstellmöglichkeit für die Schubstange durchaus bewährt, doch ist hier zu beachten, daß bei der Betätigung des Handgriffes und die dadurch bedingte Beanspruchung der miteinander in Wirkverbindung stehenden Bauteile eine erhebliche Biegebeanspruchung auf den zwischen den beiden Lagern befindlichen Teil der Schubstange ausgeübt wird und die dadurch hervorgerufenen Reaktionskräfte in den Lagern müssen manuell überwunden werden, so daß ein beachtlicher Teil der manuell aufgebrachten Kraft zur Überwindung von Reibungskräften und Verformungskräften aufgezehrt wird, was ohne Zweifel nachteilig ist und die Effizienz des Werkzeuges beeinträchtigt.In order to axially move the push rod due to the periodic movement of the pivotable handle, a toothing is provided on the push rod (EU-OS 108 584; US Pat. No. 4,135,644) into which a pawl connected to the handle engages. Since considerable forces are effective at this point of engagement, the intermeshing parts wear out very quickly, so that the tool is then unusable. In the further development of such tools, the push rod was designed to be smooth and a square block to be attached to it (GB-PS 703 780; GB-PS 1 011 470; US-PS 2 530 359; US-PS 2 582 156; US-PS 2 726,802; U.S. Patent 4,009,804; U.S. Patent 4,338,925; U.S. Patent 4,566,610; U.S. Patent 5,052,243; WO 89/01322) which can be actuated by the handle directly or via a translation. This cantilever block is pressed against a stop by a helical spring fully penetrated by the push rod, for example on the handle in its rest position. If the handle is now pivoted, the square block is inclined with respect to the axis of the push rod, it jams on the push rod and pulls it along as a result. This mechanism is provided between two bearings that support the push rod. With conventional devices of the type in question, pressing forces of up to a maximum of 800 N (80 kg) can be applied, a multiple of this force occurring at the point of application of the square block on the push rod. Basically, this adjustment option for the push rod has proven itself, but it should be noted here that when the handle is actuated and the resulting stress on the components that are in operative connection with each other, a considerable bending stress is exerted on the part of the push rod located between the two bearings and the resulting reaction forces in the bearings have to be overcome manually, so that a considerable part of the manually applied force is overcome to overcome frictional and deforming forces, which is undoubtedly disadvantageous and affects the efficiency of the tool.

In diesem Zusammenhang ist vor allem die FR-PS 1 543 996 (vgl. Oberbegriff des ersten Anspruchs) zu erwähnen. Bei der hier gezeigten Konstruktion durchsetzt die Schubstange einen über eine Feder am Gehäuse abgestützten Schlitten, in welchem auf Achsbolzen paarweise angeordnete Kontaktkloben gelagert sind, die über Schraubenfedern in einer Ausgangsstellung gehalten sind, wobei an ihren gegenüber dem Schlitten nach hinten vorstehenden Eckkanten der über den Handgriff bewegbare Drücker oder Mitnehmer anliegt. Die Funktionstüchtigkeit dieser Einrichtung erscheint aus mehreren Gründen fraglich, vor allem dann, wenn höhere Auspreßkräfte erzeugt werden sollen. Die hier für die Lagerung der Kontaktkloben vorgesehenen Lagerbolzen können, da es sich um ein handbetätigtes Gerät handelt, nur relativ klein bemessen sein, wobei unter Berücksichtigung der hier auftretenden Kräfte davon ausgegangen werden muß, daß diese klein bemessenen Lagerbolzen die auf sie einwirkende Belastung nicht ohne Schaden zu erleiden aufnehmen können. Durch diese Lagerbolzen sind die paarweise angeordneten Kontaktkloben lageorientiert, so daß dadurch nicht sichergestellt ist, daß beide Kontaktkloben in identischer Weise auf die Schubstange einwirken und somit die angestrebte exakte Symmetrie der Schubkraft nicht hinreichend genau erreicht werden kann, was zu der unerwünschten exzentrischen Belastung der Schubstange führt. Durch die seitliche Anlage je weils einer Eckkante eines Kantklobens an der Schubstange treten hohe örtliche Belastungen auf.In this connection, FR-PS 1 543 996 (cf. preamble of the first claim) should be mentioned in particular. In the construction shown here, the push rod penetrates a slide supported by a spring on the housing, in which contact bolts, which are arranged in pairs on axle bolts and are held in a starting position by means of coil springs, with their corner edges projecting rearward relative to the slide, via the handle movable pusher or driver. The functionality of this device appears questionable for several reasons, especially when higher press-out forces are to be generated. The bearing bolts provided here for the storage of the contact block can, since it is a hand-operated device, only be of relatively small dimensions, taking into account the forces occurring here, it must be assumed that these small bearing bolts do not without the load acting on them To take damage. By means of these bearing bolts, the contact blocks arranged in pairs are position-oriented, so that this does not ensure that both contact blocks are in an identical manner act on the push rod and thus the desired exact symmetry of the pushing force cannot be achieved with sufficient accuracy, which leads to the undesirable eccentric loading of the push rod. Due to the lateral contact with a corner edge of a square block on the push rod, high local loads occur.

Ziel und Zweck der gegenständlichen Erfindung ist es, die Lager von dieser Belastung freizuhalten und die über den Handgriff aufbringbare Kraft möglichst ungeschmälert und vollständig in Schubkraft umzuwandeln und darüberhinaus die von den Kontaktkloben auf die Schubstange zu übertragenden Kräfte aufzuteilen, was erfindungsgemäß durch jene Maßnahmen gelingt, die Inhalt und Gegenstand des kennzeichnenden Teiles des Patentanspruches 1 sind.The aim and purpose of the present invention is to keep the bearings free of this load and to convert the force that can be applied via the handle as undiminished and completely as possible into thrust force and, furthermore, to divide the forces to be transmitted from the contact block to the push rod, which is achieved according to the invention by those measures, the content and subject of the characterizing part of claim 1.

Um die Erfindung zu veranschaulichen, wird sie anhand eines schematisch dargestellten Ausführungsbeispieles näher erläutert, ohne sie dadurch auf das gezeigte Anwendungsbeispiel einzuschränken. Es zeigen:

  • Fig. 1 die für den Antrieb der Schubstange wesentlichen Bauelemente in Draufsicht und Fig. 2 in Seitensicht.
In order to illustrate the invention, it is explained in more detail with the aid of a schematically illustrated exemplary embodiment, without thereby restricting it to the application example shown. Show it:
  • Fig. 1 shows the essential components for driving the push rod in plan view and Fig. 2 in side view.

Das Werkzeug, mit dem beispielsweise aus Kartuschen Dichtmassen auspreßbar sind, besitzt ein pistolenartiges Gehäuse 1, in welchem eine Schubstange 2 mit einem Kolben 3 axial verschiebbar gelagert ist. Diese Schubstange 2 ist von drei gehäuseseitigen Lagern 4, 5 und 6 getragen. Zur Aufnahme und Festlegung der die auszupressende Dichtmasse beinhaltenden, hier nicht dargestellten Kartusche dient ein gehäuseseitiger Rahmen 7.The tool, with which sealing compounds can be pressed out of cartridges, for example, has a pistol-like housing 1, in which a push rod 2 with a piston 3 is axially displaceably mounted. This push rod 2 is supported by three bearings 4, 5 and 6 on the housing side. A frame 7 on the housing side serves to receive and fix the cartridge, which is not shown here, which contains the sealing compound to be pressed out.

Innerhalb des Gehäuses 1 durchsetzt die Schubstange 2 zwei - bezüglich ihrer Achse - symmetrisch zueinander angeordnete Kantkloben 8. Jeder Kantkloben 8 ist im wesentlichen als quaderförmiges Plättchen ausgebildet, welches in seinem einen Abschnitt eine Öffnung oder Bohrung 9 besitzt, deren Durchmesser um ein geringes Maß größer ist als der Durchmesser der Schubstange 2. In jenem Abschnitt dieser Kantkloben 8, in dem die Bohrung 9 für den Durchtritt der Schubstange 2 vorgesehen ist und mit welchem sie sich gegenseitig überlappen, sind diese quaderförmigen Plättchen stufenförmig abgesetzt und besitzen hier eine geringere Stärke als in jenem Abschnitt, der der Schubstange 2 abgewandt ist. Eine im Gehäuse 1 abgestützte Schraubenfeder 10, die von der Schubstange 2 durchsetzt ist, liegt mit ihrem anderen Ende am einen Kantkloben 8 an. Auf der dieser Feder 10 abgewandten Seite, und zwar an den äußeren Abschnitten dieser beiden Kantkloben 8 liegen die Gabelarme 11 des um die Achse 13 schwenkbaren Handgriffes 12 an. Eine gedachte Verbindungslinie der beiden Anlagepunkte liegt im wesentlichen parallel zur Schwenkachse 13 des Handgriffes 12.Within the housing 1, the push rod 2 passes through two square blocks 8 which are arranged symmetrically with respect to one another with respect to their axis. Each square block 8 is essentially designed as a cuboid plate which has an opening or bore 9 in its one section, the diameter of which is slightly larger is as the diameter of the push rod 2. In that section this square block 8, in which the bore 9 is provided for the passage of the push rod 2 and with which they overlap each other, these are cuboid The platelets are stepped and have a lower thickness here than in the section facing away from the push rod 2. A helical spring 10, which is supported in the housing 1 and is penetrated by the push rod 2, rests with its other end on an edge block 8. On the side facing away from this spring 10, specifically on the outer sections of these two square blocks 8, the fork arms 11 of the handle 12 pivotable about the axis 13 rest. An imaginary connecting line between the two contact points lies essentially parallel to the pivot axis 13 of the handle 12.

Um die Schubstange 2 in ihrer jeweiligen, vorgeschobenen Lage gegen die auf sie einwirkende axiale Reaktionskraft zu halten, sind noch Bremskloben 14, ebenfalls in paarweiser - bezogen auf die Achse der Schubstange 2 - symmetrischer Anordnung vorgesehen, die in ihrer Ruhelage durch eine Schraubenfeder 15 gehalten sind, die sich einerseits an einem der Bremskloben 14 und andererseits an einem Teil des Gehäuses 1 abstützt. Diese Bremskloben 14 sind identisch geformt wie die Kantkloben 8. Mit ihren äußeren Abschnitten liegen sie an gehäuseseitigen Lagern an. Parallel zur Schubstange 2 ist ein Schaltstift 16 gegen die Kraft einer Feder 17 verschiebbar gelagert, der mit seinem inneren Ende am einen der paarweise vorgesehenen Bremskloben 14 anliegt.In order to hold the push rod 2 in their respective advanced position against the axial reaction force acting on them, brake blocks 14 are also provided, also in pairs - with respect to the axis of the push rod 2 - in a symmetrical arrangement, which are held in their rest position by a coil spring 15 are supported on the one hand on one of the brake blocks 14 and on the other hand on a part of the housing 1. These brake blocks 14 are shaped identically to the square blocks 8. With their outer sections, they rest on bearings on the housing side. Parallel to the push rod 2, a switching pin 16 is mounted displaceably against the force of a spring 17, the inner end of which rests on one of the brake blocks 14 provided in pairs.

Wenn im gezeigten Ausführungsbeispiel die Gabelarme 11 des Handgriffes 12 direkt auf die Kantkloben 8 einwirkt und an diesen angreift, so liegt es im Rahmen der Erfindung, zwischen Handgriff 12 und Kantkloben 8 ein Übertragungsmechanismus vorzusehen, eventuell mit einer geeigneten Übersetzung.If, in the exemplary embodiment shown, the fork arms 11 of the handle 12 act directly on the square block 8 and engage it, it is within the scope of the invention to provide a transmission mechanism between the handle 12 and the square block 8, possibly with a suitable translation.

In der Ausgangslage befindet sich der Kolben 3 bzw. die Schubstange 2 - bezogen auf die Fig. 1 und 2 - links. Wird der Handgriff 12 des pistolenartigen Gehäuses 1 verschwenkt (Pfeil 18) gegen die Kraft der Feder 20, so werden über die Gabelarme 11 die Kantkloben 8 gegen die Kraft der Feder 10 verkantet, sie legen sich reibungsschlüssig an der Schubstange 2 fest und die Schubstange 2 wird nun um ein Maß nach rechts geschoben, das der Sehnenlänge des Schwenkbogens der Gabelarme 11 entspricht. Die nur durch die Feder 15 belasteten Bremskloben 14 behindern diese Bewegung nicht. Wird der Handgriff 12 losgelassen, der aufgrund der auf ihn einwirkenden Kraft der Feder 20 in seine Ausgangslage zurückkehrt, so werden die Kantkloben 8 durch die vorgespannte Feder 10 in ihre aus Fig. 1 ersichtliche Lage zurückgedrückt. Die auf den Kolben 3 einwirkende Reaktionskraft (Pfeil 19) der in der nicht dargestellten Kartusche befindlichen Masse, versucht die Schubstange 2 zurück, nach links zu schieben. Diese Bewegung wird aber durch die unter der Wirkung der Kraft der Feder 15 stehenden Bremskloben nun blockiert, die ja durch die Kraft dieser Feder gegenüber der Schubstange 2 verkantet sind und diese reibungsschlüssig festhalten. Durch periodische Bewegungen des Handgriffes 12 wird die Schubstange 2 bzw. der Kolben 3 schrittweise nach rechts bewegt. Soll der schlußendlich in der rechten Endlage befindliche Kolben wieder in seine Ausgangslage zurückgebracht werden, so werden durch Drücken des Schaltstiftes 16 die Bremskloben 14 gegen die Kraft der Feder 15 etwas verschwenkt, so daß der Reibungsschluß zwischen den Bremskloben 14 und der Schubstange 2 aufgehoben ist und dadurch die Schubstange 2 manuell zurückgezogen werden kann.In the starting position, the piston 3 or the push rod 2 - based on FIGS. 1 and 2 - is on the left. If the handle 12 of the pistol-like housing 1 is pivoted (arrow 18) against the force of the spring 20, the claw clamps 8 are tilted against the force of the spring 10 via the fork arms 11, they fix themselves frictionally on the push rod 2 and the push rod 2 is now pushed to the right by an amount that corresponds to the chord length of the swivel bow of the fork arms 11. The brake block 14 loaded only by the spring 15 does not hinder this movement. If the handle 12 is released, which returns to its initial position due to the force of the spring 20 acting on it, the claw clamps 8 are pushed back into their position shown in FIG. 1 by the prestressed spring 10. The reaction force acting on the piston 3 (arrow 19) of the mass in the cartridge (not shown) tries to push the push rod 2 back to the left. But this movement is caused by the under the action of the force of the spring 15 standing brake block now blocked, which are tilted by the force of this spring relative to the push rod 2 and hold it frictionally. Periodic movements of the handle 12 gradually move the push rod 2 or the piston 3 to the right. If the piston, which is finally in the right end position, is to be returned to its starting position, the brake block 14 is pivoted somewhat against the force of the spring 15 by pressing the switching pin 16, so that the frictional engagement between the brake block 14 and the push rod 2 is canceled and thereby the push rod 2 can be withdrawn manually.

Durch die symmetrische Anordnung der Kantkloben 8 und der Bremskloben 14 wirken auf die Schubstange 2 praktisch nur achsparallele Kräfte ein, wodurch nicht nur die Verformung der Schubstange, sondern auch die ungleichmäßige Belastung der Lager verhindert wird und so die manuell über den Handgriff 12 aufgebrachten Kräfte effizient zum Verschub der Schubstange 2 einsetzbar sind.Due to the symmetrical arrangement of the square block 8 and the brake block 14, practically only axially parallel forces act on the push rod 2, which not only prevents the deformation of the push rod, but also the uneven loading of the bearings and thus the forces manually applied via the handle 12 efficiently can be used to move the push rod 2.

Die Längsachsen der beiden Kantkloben 8, das sind die in Fig. 1 zur Zeichenebene parallel liegenden Achsen derselben, schließen beim gezeigten Ausführungsbeispiel miteinander einen gestreckten Winkel von 180° ein. Es liegt im Rahmen der Erfindung, diese paarweise vorgesehenen Kantkloben 8 so zueinander anzuordnen, daß ihre Achsen einen stumpfen oder gar spitzen Winkel miteinander einschließen. Der durch die Erfindung angestrebte Zweck, die Schubstange 2 von Biegekräften so weit wie möglich freizuhalten, wird in diesem Falle allerdings nur in beschränktem Umfang erreicht.The longitudinal axes of the two cantilever blocks 8, that is, the axes thereof lying parallel to the plane of the drawing in FIG. 1, form an extended angle of 180 ° with one another in the exemplary embodiment shown. It is within the scope of the invention to arrange these claw clamps 8, which are provided in pairs, so that their axes enclose an obtuse or even acute angle with one another. The aim of the invention, to keep the push rod 2 free of bending forces as far as possible, is only achieved to a limited extent in this case.

LegendeLegend zu den Hinweisziffern:to the reference numbers:

11
Gehäusecasing
22nd
SchubstangePush rod
33rd
Kolbenpiston
44th
Lagercamp
55
Lagercamp
66
Lagercamp
77
Rahmenframe
88th
KantklobenEdge block
99
Bohrungdrilling
1010th
SchraubenfederCoil spring
1111
GabelarmFork arm
1212th
HandgriffHandle
1313
Achseaxis
1414
BremsklobenBrake block
1515
SchraubenfederCoil spring
1616
SchaltstiftSwitching pin
1717th
Federfeather
1818th
Pfeilarrow
1919th
Pfeilarrow
2020th
Federfeather

Claims (2)

  1. A manually operated tool with a handle (12) which is pivotable with respect to a housing (1) and by which a push rod (2) mounted in the housing (1) is mounted so as to be axially displaceable in steps, and between the bearings (5, 6) supporting it the push rod (2) cooperates with at least two tilting blocks (8) which are loaded by a spring (10) supported on the housing (1), wherein the force exerted by the spring (10) upon the tilting blocks (8) is directed contrary to the displacement direction of the push rod (2) and the displacement force exertable periodically by the handle (12) engages on the outer portion of the tilting blocks (8) remote from the push rod (2) and at least one braking block (14) is provided for locking the push rod (2), wherein at least the tilting blocks (8) are provided in pairs in a symmetrical arrangement with respect to the axis of the push rod (2), characterized in that the tilting blocks (8) which are traversed by the push rod (2) are constructed as platelets or cuboids and have a portion which is provided with a bore (9) for the passage of the push rod (2) and in which they mutually overlap and the overlapping portions have a reduced thickness as compared with the remaining portion, and the part of the handle (12) cooperating with the tilting blocks (8) arranged symmetrically with respect to the push rod (2) is constructed in the manner of a fork, and the pivot axis (13) of the handle (12) is situated substantially parallel to the imaginary line connecting the engagement points of the fork arms (11) of the handle (12) on the tilting blocks (8).
  2. A manually operated tool according to Claim 1, characterized in that the braking blocks (14) are likewise provided in a symmetrical arrangement with respect to the axis of the push rod (2).
EP94114850A 1993-09-27 1994-09-21 Hand-actuated tool Expired - Lifetime EP0645194B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0194093A AT401623B (en) 1993-09-27 1993-09-27 MANUAL TOOL
AT1940/93 1993-09-27

Publications (3)

Publication Number Publication Date
EP0645194A2 EP0645194A2 (en) 1995-03-29
EP0645194A3 EP0645194A3 (en) 1995-08-02
EP0645194B1 true EP0645194B1 (en) 1997-12-17

Family

ID=3524324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114850A Expired - Lifetime EP0645194B1 (en) 1993-09-27 1994-09-21 Hand-actuated tool

Country Status (5)

Country Link
US (1) US5511699A (en)
EP (1) EP0645194B1 (en)
AT (1) AT401623B (en)
DE (1) DE59404816D1 (en)
DK (1) DK0645194T3 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US6745921B2 (en) 2001-02-20 2004-06-08 P.C. Cox Limited Hand actuated tool and clutch mechanism

Families Citing this family (9)

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AT406452B (en) * 1996-09-19 2000-05-25 Soraton Sa MANUAL TOOL
GB9804473D0 (en) * 1998-03-02 1998-04-29 Benoist Girard & Cie Prosthesis inserter
DE19855764A1 (en) * 1998-12-03 2000-06-08 Weimer Pharma Gmbh Use of a carpule as a dispenser and device for this use
US7971758B2 (en) 2005-11-10 2011-07-05 Black & Decker Inc. Caulk gun
DE102006035476A1 (en) * 2006-12-04 2008-06-05 Hilti Ag Extruding device for extruding containers having single or multi-component mass, has piston rod and feeding mechanism, which has clamp lever and another clamp lever
US9005209B2 (en) * 2009-07-30 2015-04-14 Kyphon Sarl High pressure surgical system
EP3251755A1 (en) * 2016-05-31 2017-12-06 Sulzer Mixpac AG Two-component dispenser
CN111576817B (en) * 2018-11-26 2021-04-30 杭州曼京科技有限公司 Auxiliary device is used to box fitment
CN109518922B (en) * 2018-11-26 2020-05-05 杭州曼京科技有限公司 Auxiliary device for building interior decoration

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US4135644A (en) * 1976-07-19 1979-01-23 Pacetti Clarence N Caulking gun
US4338925A (en) * 1979-12-20 1982-07-13 Jo Miller Pressure injection of bone cement apparatus and method
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EP0326551B1 (en) * 1987-08-15 1994-03-16 Ao-Forschungsinstitut Davos Hand power tool mechanism

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Publication number Priority date Publication date Assignee Title
US2530359A (en) * 1948-03-20 1950-11-14 Northeast Tool And Die Works I Operating mechanism for plungers of caulking guns
US2582156A (en) * 1948-03-20 1952-01-08 Wilbur P Peterson Dispensing apparatus and cartridge therefor
US2726802A (en) * 1951-04-27 1955-12-13 Force Flo Inc Loading rig for caulking guns
GB1011470A (en) * 1963-11-06 1965-12-01 Expandite Ltd Improvements relating to guns for applying viscous materials such as mastics
US4009804A (en) * 1974-07-17 1977-03-01 Loctite Corporation Anti-drool extrusion device
US4566610A (en) * 1982-09-15 1986-01-28 Hilti Aktiengesellschaft Hand-held device for dispensing a multi-component substance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6745921B2 (en) 2001-02-20 2004-06-08 P.C. Cox Limited Hand actuated tool and clutch mechanism

Also Published As

Publication number Publication date
US5511699A (en) 1996-04-30
EP0645194A3 (en) 1995-08-02
AT401623B (en) 1996-10-25
DE59404816D1 (en) 1998-01-29
ATA194093A (en) 1996-03-15
DK0645194T3 (en) 1998-08-24
EP0645194A2 (en) 1995-03-29

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