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EP2885110A2 - Fastener driving tool with safety lock - Google Patents

Fastener driving tool with safety lock

Info

Publication number
EP2885110A2
EP2885110A2 EP13750302.5A EP13750302A EP2885110A2 EP 2885110 A2 EP2885110 A2 EP 2885110A2 EP 13750302 A EP13750302 A EP 13750302A EP 2885110 A2 EP2885110 A2 EP 2885110A2
Authority
EP
European Patent Office
Prior art keywords
tacker
slide
driving
drive
transmission element
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.)
Granted
Application number
EP13750302.5A
Other languages
German (de)
French (fr)
Other versions
EP2885110B1 (en
Inventor
Iwan Wolf
Mario Grazioli
Karl Franz
Stefan Miescher
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
Publication of EP2885110A2 publication Critical patent/EP2885110A2/en
Application granted granted Critical
Publication of EP2885110B1 publication Critical patent/EP2885110B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/008—Safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power

Definitions

  • the invention relates to a tacker according to the preamble of claim 1.
  • DE 100 32 310 A1 describes a operated with fuel gas tacker, in which a position of a drive piston for function control by means of a feeler member is interrogated.
  • a fastener according to the invention is understood to mean any retractable nail, bolt, pin or even a clamp or screw.
  • the fastening device is electrically driven and hand-guided.
  • the drive may preferably have an electrical energy storage in the manner of a rechargeable battery to be operated wirelessly.
  • the energy transmission element may be formed in any manner known by tacking devices.
  • it can be a spring-loaded piston as a power transmission element, which can be tensioned by a drive device comprising a rotatable spindle.
  • the spring may be formed as a metal or plastic spring or as a gas spring. In such devices is usually a tensioning of the spring by turning the spindle by means of an example electric motor to a tensioned state.
  • the piston After a release, the piston is accelerated by the spring, so that the piston meets the fastener and this rubs into a workpiece.
  • a back dividing the piston into an initial position can be done subsequently by further rotation of the spindle, wherein depending on the design of the mechanism, the direction of rotation may be reversed.
  • Other embodiments covered by the invention may include, for example, gas powered or air driven tackers.
  • the energy transmission element is initially subjected to a kinetic energy by means of an energy source, wherein it subsequently transfers this to the fastening element in order to drive it into a workpiece.
  • a driving member of the energy transmission element is understood to mean that part which acts directly on the fastening element in order to accelerate it.
  • the drive member is often, but not necessarily, a plunger.
  • the plunger is usually formed as a front part of a driven piston or other component of the energy transfer element.
  • the blocking member can be arranged to block directly in a travel path of the drive member or in a travel path of another part of the energy transfer element. It is essential that an acceleration of the fastener is basically prevented.
  • each element is to be understood, which serves to determine a proper operating state. It can be a mechanical feeler, an electromechanical component, a safety switch to be actuated, a light barrier or the like.
  • a sensor member in the sense of the invention is understood to mean a device by means of which a proper application or pressing of the tacker on a workpiece can be determined in order to prevent an uncontrolled escape of the fastener from the tacker.
  • a further safety device is provided on the tacker in addition to the locking member, wherein the triggering of a driving operation is prevented by means of the further safety device.
  • an inventive locking member therefore provided in addition to the safety device, so that a total of a particularly high security is achieved.
  • the safety is ensured exclusively by the locking member and without further safety device.
  • the locking member is expediently designed so that it can intercept the energy transmission element repeatedly, without causing relevant components damage or fatigue.
  • the sensor member comprises a pressure member in a front region of the tacker, wherein the pressure member is supported against a workpiece for releasing the driving operation.
  • a pressure member may be formed, for example, as a retractable sleeve-shaped mouth channel, as a retractable feeler pin or the like.
  • the locking member comprises in a generally advantageous embodiment, a movable slide, wherein the slider is disposed in a locking position between the driving member and the fastening element, and wherein the slider in a release position releases a travel of the driving member against the fastening member. The positioning between the drive member and the fastener causes the fuse in a particularly effective manner.
  • the locking member is vorzugsweisse from a formed stable material and therefore particularly suitable to absorb the kinetic energy of the drive member or the piston. In addition, this results in an arrangement of the locking member in a front region of the tacker, so that in particular a mechanical control of the slider is easily feasible.
  • the slider is connected via a mechanism with a pressure member, wherein a pressing of the pressure member against a workpiece moves the slider in the release position.
  • the pressure member can also control one or more other safety devices of the tacker depending on the requirements.
  • the slide can be designed as a rotary valve.
  • the slide can also be designed as a linear slide.
  • an electric motor is present as the drive source.
  • another drive form such as fuel gas or compressed air can be selected.
  • Fig. 1 shows a side, partially cutaway overall view of a tacker according to the invention.
  • Fig. 2 shows a component of the device of Fig. 1 with a locking member as
  • Rotary valve in spatial view in a non-pressed state
  • FIG. 3 a shows the component from FIG. 2 in a lateral plan view with a
  • FIG. 3b shows the component from FIG. 2 in a further lateral plan view.
  • 3c shows a sectional view of the component from FIG. 3b along the line AA.
  • Fig. 4 shows the device of FIG. 2 in a three-dimensional view in a pressed
  • FIG. 5a shows the component from FIG. 4 in a lateral plan view with one
  • FIG. 5b shows the component from FIG. 4 in a further lateral plan view.
  • FIG. 5c shows a sectional view of the component from FIG. 5b along the line A-A.
  • Fig. 6 shows a further embodiment of the device of Fig. 2 with a linear slider as a locking member in a non-pressed state.
  • FIG. 7 shows the component from FIG. 6 in two lateral plan views and one
  • Fig. 8 shows a perspective view of the device of Fig. 6 in a pressed
  • FIG. 9 shows the component from FIG. 7 in two lateral plan views and one
  • Fig. 10 shows a schematic representation of a locking member with a linear, pivotable slide.
  • Fig. 11 shows a schematic representation of a locking member with a linear, four-slide valve.
  • Fig. 12 shows a schematic representation of a locking member with a rotary valve in the open and closed positions.
  • FIG. 13 shows a modification of the rotary valve from FIG. 12.
  • the drive-in device according to the invention from FIG. 1 comprises a hand-guided housing 1, in which a power transmission element 2 with a drive device 7 is accommodated.
  • a power transmission element 2 with a drive device 7 is accommodated.
  • the energy transmission element 2 comprises a linearly guided piston with a drive member 4 in the form of a substantially cylindrical plunger made of particularly low-wear material.
  • a damped stop 6 is arranged for the piston.
  • Fasteners 8 are received in a magazine 9.
  • a fastener is in each case transported into a chamber 10 of the component 5, from where it accelerated by the action of the drive member 4 and is driven through a sleeve-shaped mouth part 1 1 in a workpiece (not shown).
  • the drive device 7 in the present case comprises an electric motor 7a, a gear 7b with adjoining rotary spindle (not shown) and a spring member 7c for intermediate storage of mechanical energy, whose end is received in a spring receptacle 3.
  • a blocking member 12 is arranged in a path traveled by the drive member 4, the blocking member being a blocking arrangement (see, for example, FIGS. 2 to 3 c, 6, 7, 10) or a releasing arrangement (see, for example, Fig. 4 to Fig. 5c, Fig. 8, Fig. 9) may have.
  • the locking member each comprises a slider 13, which may be formed depending on the embodiment shown as a linear slide or a rotary valve. If a release of the tacker in the locked state of the locking member 12 should take place, the driving member 4 would hit against the slider 13 of the locking member 12 and thereby stopped in his path. The kinetic energy of the energy transmission element is intercepted and not directed to the fastener.
  • the present tacker also has other safety devices (not shown), by the triggering of the device is prevented in a non-operational state. If, for reasons of malfunction or manipulation, nevertheless triggering take place, then the blocking member 12 would act as an additional safeguard, which immediately prevents energy transfer to the fastening element.
  • the further safety devices may be of a purely mechanical nature or may also have electrical switches, such as contacts, photocells or the like.
  • an operational state for driving in the fastening element 8 is only present when the mouth part 11 is pressed against a workpiece.
  • the mouth part 1 1 has an insertability about a stroke along its longitudinal direction or in the driving direction.
  • the mouth part 11 is coupled to a pressing rod 14, which is supported against a spring 14a.
  • the pressing rod 14 is also mechanically connected to the locking member 12, so that at the same time the slide 13 of the locking member 12 is actuated by the stroke of the pressing rod 14.
  • the slide 13 is designed as a rotary slide 13a.
  • This comprises a cylindrical roller 15 with a lateral recess 16 in the form of a cylinder segment.
  • the slider 13a partially covers a passage opening 17 for the drive member 4, so that the drive member would strike against the slider.
  • the release position covers the passage opening 17 with the recess 16 so that it is completely free.
  • Trained as a rotary valve slide 13a is rotated by a rotary lever 18, with which the pressure bar 14 is pivotally connected.
  • the slide 13 is designed as a linear slide 13 b. The slider 13b protrudes from the side into the passage opening 17 in a locked state and blocks it (see FIG.
  • Fig. 10 shows a schematic representation of another embodiment of a linear slider 13, 13c. This is not formed exactly linearly displaceable, but is pivoted about a hinge 21, wherein a pin 22 of the slider 13c in the passage opening 17 on or pivots out.
  • 1 1 shows a schematic representation of the principle of the linear slide of FIGS. 6 to 9.
  • Fig. 12 shows a schematic representation of a rotary valve in the closed and open state, wherein the rotary valve 13 is formed as a cylindrical roller with a central, directed perpendicular to the cylinder axis bore 23. With appropriate orientation, the bore 23, the passage opening 17 is free.
  • Fig. 13 shows schematically a modification of such a rotary valve with non-central recess, which corresponds to the embodiment of Fig. 1 to Fig. 5c.

Landscapes

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

Abstract

The invention relates to a fastener driving tool, comprising a hand-held casing (1) with a movable and drivable energy transmission element (2) accommodated therein, for transmitting energy to a fastener (8), a driving member (4) of the energy transmission element (2), wherein the driving member (4) acts to drive the fastener (8), and a sensor member (11) for determining an operational state of the fastener driving tool, wherein a driving process is released only if the operational state prevails, wherein a locking member (12, 13) is arranged in a locking manner in a path of the energy transmission element if the non-operational state prevails, wherein, once a driving process has been triggered, the locking member (12, 13) can cushion the energy transmission element (2).

Description

Eintreibgerät mit Sicherheitssperre  Tacker with safety lock
Die Erfindung betrifft ein Eintreibgerät nach dem Oberbegriff des Anspruchs 1. DE 100 32 310 A1 beschreibt ein mit Brenngas betriebenes Eintreibgerät, bei dem eine Stellung eines Eintreibkolbens zur Funktionssteuerung mittels eines Tastgliedes abfragbar ist. The invention relates to a tacker according to the preamble of claim 1. DE 100 32 310 A1 describes a operated with fuel gas tacker, in which a position of a drive piston for function control by means of a feeler member is interrogated.
Es ist die Aufgabe der Erfindung, eine Eintreibgerät anzugeben, das eine hohe Betriebssicherheit aufweist. It is the object of the invention to provide a tacker that has a high reliability.
Diese Aufgabe wird für eine eingangs genannte Eintreibvorrichtung erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Durch das Vorsehen eines Sperrgliedes in dem Weg des Energieübertragungselements wird eine ungewollte oder nicht betriebsgemäße Beaufschlagung des Befestigungselements unmittelbar verhindert. Das Abfangen des Energieübertragungselementes verhindert in einem solchen Fall ein Einwirken auf das Befestigungselement. Je nach Auslegung kann dabei ein erheblicher Anteil oder auch eine vollständige Bewegungsenergie durch das Sperrglied abgefangen werden, die andernfalls auf das Befestigungselement übertragen würde. This object is achieved according to the invention for a drive-in device mentioned above with the characterizing features of claim 1. By providing a blocking member in the path of the energy transmission element, an undesired or non-operational loading of the fastening element is directly prevented. The interception of the energy transmission element prevents acting on the fastener in such a case. Depending on the design, a significant proportion or even a complete kinetic energy can be absorbed by the blocking member, which would otherwise be transferred to the fastening element.
Unter einem Befestigungselement im Sinne der Erfindung wird dabei jeder eintreibbare Nagel, Bolzen, Stift oder auch eine Klammer oder Schraube verstanden. Die Befestigungsvorrichtung ist elektrisch angetrieben und handgeführt. Der Antrieb kann bevorzugt über einen elektrischen Energiespeicher nach Art eines Akkumulators verfügen, um kabellos betrieben zu werden. Das Energieübertragungselement kann auf beliebige, von Eintreibgeräten bekannte Weise ausgebildet sein. Zum Beispiel kann es sich um einen federbelasteten Kolben als Energieübertragungselement handeln, das von einer eine drehbare Spindel umfassende Antriebsvorrichtung spannbar ist. Die Feder kann als Metall- oder Kunststofffeder oder auch als Gasfeder ausgebildet sein. Bei solchen Geräten erfolgt meist ein Spannen der Feder durch Drehen der Spindel mittels eines z.B. elektrischen Motors bis zu einem gespannten Zustand. Nach einem Auslösen wird der Kolben durch die Feder beschleunigt, so dass der Kolben auf das Befestigungselement trifft und dieses in ein Werkstück einreibt. Ein Rücksteilen des Kolbens in eine Ausgangsposition kann nachfolgend durch weitere Drehung der Spindel erfolgen, wobei je nach Auslegung der Mechanik die Drehrichtung umgekehrt sein kann. Andere unter die Erfindung fallende Ausführungsformen können zum Beispiel brenngasbetriebene oder druckluftbetriebene Eintreibgeräte umfassen. Bei allen Ausführungsformen wird dabei das Energieübertragungselement mittels einer Energiequelle zunächst mit einer Bewegungsenergie beaufschlagt, wobei es diese nachfolgend auf das Befestigungselement überträgt, um es in ein Werkstück einzutreiben. A fastener according to the invention is understood to mean any retractable nail, bolt, pin or even a clamp or screw. The fastening device is electrically driven and hand-guided. The drive may preferably have an electrical energy storage in the manner of a rechargeable battery to be operated wirelessly. The energy transmission element may be formed in any manner known by tacking devices. For example, it can be a spring-loaded piston as a power transmission element, which can be tensioned by a drive device comprising a rotatable spindle. The spring may be formed as a metal or plastic spring or as a gas spring. In such devices is usually a tensioning of the spring by turning the spindle by means of an example electric motor to a tensioned state. After a release, the piston is accelerated by the spring, so that the piston meets the fastener and this rubs into a workpiece. A back dividing the piston into an initial position can be done subsequently by further rotation of the spindle, wherein depending on the design of the mechanism, the direction of rotation may be reversed. Other embodiments covered by the invention may include, for example, gas powered or air driven tackers. In all embodiments, the energy transmission element is initially subjected to a kinetic energy by means of an energy source, wherein it subsequently transfers this to the fastening element in order to drive it into a workpiece.
Unter einem Treibglied des Energieübertragungselements wird im Sinne der Erfindung derjenige Teil verstanden, der unmittelbar auf das Befestigungselement einwirkt, um dieses zu beschleunigen. Bei dem Treibglied handelt es sich häufig, aber nicht notwendig, um einen Stößel. Der Stößel ist meist als vorderes Teil eines antreibbaren Kolbens oder einer sonstigen Komponente des Energieübertragungselements ausgebildet. Grundsätzlich kann das Sperrglied unmittelbar in einem Verfahrweg des Treibgliedes oder auch in einem Verfahrweg eines anderen Teils des Energieübertragungselementes sperrend angeordnet sein. Wesentlich ist dabei, dass eine Beschleunigung des Befestigungselementes grundsätzlich verhindert wird. In the sense of the invention, a driving member of the energy transmission element is understood to mean that part which acts directly on the fastening element in order to accelerate it. The drive member is often, but not necessarily, a plunger. The plunger is usually formed as a front part of a driven piston or other component of the energy transfer element. In principle, the blocking member can be arranged to block directly in a travel path of the drive member or in a travel path of another part of the energy transfer element. It is essential that an acceleration of the fastener is basically prevented.
Unter einem Sensorglied im Sinne der Erfindung ist jedes Element zu verstehen, das zur Feststellung eines betriebsgemäßen Zustandes dient. Es kann sich um ein mechanisches Tastglied handeln, um ein elektromechanisches Bauteil, ein zu betätigender Sicherheitsschalter, eine Lichtschranke oder Ähnliches. Insbesondere wird unter einem Sensorglied im Sinne der Erfindung eine Vorrichtung verstanden, mittels der ein ordnungsgemäßes Anlegen oder Andrücken des Eintreibgerätes an ein Werkstück feststellbar ist, um einen unkontrollierten Austritt des Befestigungselements aus dem Eintreibgerät zu verhindern. Bei einer besonders bevorzugten Ausführungsform der Erfindung ist zusätzlich zu dem Sperrglied eine weitere Sicherheitseinrichtung an dem Eintreibgerät vorgesehen, wobei das Auslösen eines Eintreibvorgangs mittels der weiteren Sicherheitseinrichtung verhindert ist. Im Unterschied zu der Funktion des Sperrgliedes wird durch die weitere Sicherheitseinrichtung lediglich ein Auslösen blockiert. Solche Sicherhitseinrichtungen sind in vielen Bauarten bekannt. Ein Kriterium zur Aktivierung der weiteren Sicherheitseinrichtung kann von dem betriebsgemäßen Zustand zur Freigabe des Sperrgliedes abweichen oder auch dasselbe Kriterium sein. Ein wesentlicher Unterschied zwischen der weiteren Sicherheitseinrichtung und der Funktion des Sperrglieds besteht darin, dass durch das Sperrglied eine Energieübertragung auf das Befestigungselement grundsätzlich verhinderbar ist. Das Sperrglied ist daher auch dann wirksam, wenn durch Manipulationen, Verschleiß, Bruch, Einwirkung von Wasser, Eis oder sonstige unvorhergesehene Umstände weitere Sicherheitseinrichtungen ausfallen. Under a sensor member in the context of the invention, each element is to be understood, which serves to determine a proper operating state. It can be a mechanical feeler, an electromechanical component, a safety switch to be actuated, a light barrier or the like. In particular, a sensor member in the sense of the invention is understood to mean a device by means of which a proper application or pressing of the tacker on a workpiece can be determined in order to prevent an uncontrolled escape of the fastener from the tacker. In a particularly preferred embodiment of the invention, a further safety device is provided on the tacker in addition to the locking member, wherein the triggering of a driving operation is prevented by means of the further safety device. In contrast to the function of the locking member is blocked by the further safety device only triggering. Such Sicherhitseinrichtungen are known in many designs. A criterion for activating the further safety device can deviate from the operating state for releasing the blocking element or can also be the same criterion. An essential difference between the further safety device and the function of the locking member is that by the locking member energy transfer to the fastener is basically prevented. The locking member is therefore effective even if fail by manipulation, wear, breakage, exposure to water, ice or other unforeseen circumstances further safety devices.
Besonders bevorzugt ist ein erfindungsgemäßes Sperrglied daher ergänzend zu der Sicherheitseinrichtung vorgesehen, so dass insgesamt eine besonders hohe Sicherheit erzielt wird. Grundsätzlich kann aber auch vorgesehen sein, dass die Sicherheit ausschließlich durch das Sperrglied und ohne weitere Sicherheitseinrichtung gewährleistet wird. In einem solchen Fall ist das Sperrglied zweckmäßig so auszulegen, dass es auch wiederholt das Energieübertragungselement abfangen kann, ohne dass relevante Bauteile hierdurch Schaden nehmen oder ermüden. Particularly preferred is an inventive locking member therefore provided in addition to the safety device, so that a total of a particularly high security is achieved. In principle, however, it can also be provided that the safety is ensured exclusively by the locking member and without further safety device. In such a case, the locking member is expediently designed so that it can intercept the energy transmission element repeatedly, without causing relevant components damage or fatigue.
Bei einer allgemein bevorzugten Ausführungsform der Erfindung umfasst das Sensorglied ein Andruckglied in einem vorderen Bereich des Eintreibgerätes, wobei das Andruckglied zur Freigabe des Eintreibvorganges gegen ein Werkstück abgestützt ist. Ein solches Andruckglied kann zum Beispiel als einschiebbarer hülsenförmiger Mündungskanal, als einschiebbarer Tastbolzen oder Ähnliches ausgebildet sein. Das Sperrglied umfasst bei einer allgemein vorteilhaften Ausführungsform einen beweglichen Schieber, wobei der Schieber in einer Sperrstellung zwischen dem Treibglied und dem Befestigungselement angeordnet ist, und wobei der Schieber in einer Freigabestellung einen Verfahrweg des Treibgliedes gegen das Befestigungsglied freigibt. Die Positionierung zwischen dem Treibglied und dem Befestigungselement bewirkt die Sicherung auf besonders effektive Weise. Das Sperrglied ist vorzugsweisse aus einem stabilen Material ausgebildet und daher besonders geeignet, die Bewegungsenergie des Treibglieds beziehungsweise des Kolbens abzufangen. Zudem besteht hierdurch eine Anordnung des Sperrglieds in einem vorderen Bereich des Eintreibgerätes, so dass insbesondere eine mechanische Ansteuerung des Schiebers leicht realisierbar ist. In a generally preferred embodiment of the invention, the sensor member comprises a pressure member in a front region of the tacker, wherein the pressure member is supported against a workpiece for releasing the driving operation. Such a pressure member may be formed, for example, as a retractable sleeve-shaped mouth channel, as a retractable feeler pin or the like. The locking member comprises in a generally advantageous embodiment, a movable slide, wherein the slider is disposed in a locking position between the driving member and the fastening element, and wherein the slider in a release position releases a travel of the driving member against the fastening member. The positioning between the drive member and the fastener causes the fuse in a particularly effective manner. The locking member is vorzugsweisse from a formed stable material and therefore particularly suitable to absorb the kinetic energy of the drive member or the piston. In addition, this results in an arrangement of the locking member in a front region of the tacker, so that in particular a mechanical control of the slider is easily feasible.
Bei einer besonders bevorzugten Weiterbildung ist dabei der Schieber über eine Mechanik mit einem Andruckglied verbunden, wobei ein Andrücken des Andruckgliedes gegen ein Werkstück den Schieber in die Freigabestellung bewegt. Das Andruckglied kann je nach Anforderungen zudem eine oder mehrere weitere Sicherheitseinrichtungen des Eintreibgerätes ansteuern. Durch den Vorgang des Andrückens gegen ein Werkstück ist auf einfache und effektive Weise der betriebsgemäße Zustand des Eintreibgerätes hergestellt. In a particularly preferred development of the slider is connected via a mechanism with a pressure member, wherein a pressing of the pressure member against a workpiece moves the slider in the release position. The pressure member can also control one or more other safety devices of the tacker depending on the requirements. By the process of pressing against a workpiece is produced in a simple and effective manner, the operating state of the tacker.
Bei einer einfachen und zweckmäßigen Realisierung einer Ansteuerung ist dabei das Sperrglied mittels einer Anpressstange mit dem Andruckglied verbunden. In a simple and expedient realization of a drive while the locking member is connected by means of a pressing bar with the pressure member.
Bei einer ersten möglichen Detailgestaltung kann der Schieber als ein Drehschieber ausgebildet sein. Bei einer hierzu alternaiven Ausgestaltung kann der Schieber auch als ein linearer Schieber ausgebildet sein. In a first possible detail design of the slide can be designed as a rotary valve. In an alternative embodiment, the slide can also be designed as a linear slide.
Bei einer bevorzugten, aber nicht notwendigen Bauform eines Eintreibgerätes liegt ein elektrischer Motor als Antriebsquelle vor. Alternativ hierzu kann aber auch eine andere Antriebsform wie etwa Brenngas oder Druckluft gewählt sein. In a preferred, but not necessary design of a tacker, an electric motor is present as the drive source. Alternatively, however, another drive form such as fuel gas or compressed air can be selected.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ausführungsbeispielen sowie aus den abhängigen Ansprüchen. Nachfolgend werden mehrere bevorzugte Ausführungsbeispiele der Erfindung beschrieben und anhand der anliegenden Zeichnungen näher erläutert. Further features and advantages of the invention will become apparent from the embodiments and from the dependent claims. Hereinafter, several preferred embodiments of the invention will be described and explained in more detail with reference to the accompanying drawings.
Fig. 1 zeigt eine seitliche, teilweise aufgeschnittene Gesamtansicht eines erfindungsgemäßen Eintreibgerätes. Fig. 1 shows a side, partially cutaway overall view of a tacker according to the invention.
Fig. 2 zeigt ein Bauelement des Gerätes aus Fig. 1 mit einem Sperrglied als  Fig. 2 shows a component of the device of Fig. 1 with a locking member as
Drehschieber in räumlicher Ansicht in einem nicht angepressten Zustand.  Rotary valve in spatial view in a non-pressed state.
Fig. 3a zeigt das Bauelement aus Fig. 2 in einer seitlichen Draufsicht mit einer FIG. 3 a shows the component from FIG. 2 in a lateral plan view with a
Schnittansicht entlang der Linie A-A..  Section view along the line A-A ..
Fig. 3b zeigt das Bauelement aus Fig. 2 in einer weiteren seitlichen Draufsicht. Fig. 3c zeigt eine Schnittansicht des Bauelements aus Fig. 3b entlang der Linie A-A. Fig. 4 zeigt das Bauelement aus Fig. 2 in räumlicher Ansicht in einem angepressten FIG. 3b shows the component from FIG. 2 in a further lateral plan view. 3c shows a sectional view of the component from FIG. 3b along the line AA. Fig. 4 shows the device of FIG. 2 in a three-dimensional view in a pressed
Zustand.  Status.
Fig. 5a zeigt das Bauelement aus Fig. 4 in einer seitlichen Draufsicht mit einer  FIG. 5a shows the component from FIG. 4 in a lateral plan view with one
Schnittansicht entlang der Linie A-A..  Section view along the line A-A ..
Fig. 5b zeigt das Bauelement aus Fig. 4 in einer weiteren seitlichen Draufsicht.  FIG. 5b shows the component from FIG. 4 in a further lateral plan view.
Fig. 5c zeigt eine Schnittansicht des Bauelements aus Fig. 5b entlang der Linie A-A. Fig. 6 zeigt eine weitere Ausführungsform des Bauelementes aus Fig. 2 mit einem linearen Schieber als Sperrglied in einem nicht angepressten Zustand. Fig. 7 zeigt das Bauelement aus Fig. 6 in zwei seitlichen Draufsichten und einer FIG. 5c shows a sectional view of the component from FIG. 5b along the line A-A. Fig. 6 shows a further embodiment of the device of Fig. 2 with a linear slider as a locking member in a non-pressed state. FIG. 7 shows the component from FIG. 6 in two lateral plan views and one
Schnittansicht entlang der Linie A-A.  Section view along the line A-A.
Fig. 8 zeigt eine räumliche Ansicht des Bauelements aus Fig. 6 in einem angepressten Fig. 8 shows a perspective view of the device of Fig. 6 in a pressed
Zustand.  Status.
Fig. 9 zeigt das Bauelement aus Fig. 7 in zwei seitlichen Draufsichten und einer  FIG. 9 shows the component from FIG. 7 in two lateral plan views and one
Schnittansicht entlang der Linie A-A.  Section view along the line A-A.
Fig. 10 zeigt eine schematische Darstellung eines Sperrglieds mit einem linearen, verschwenkbaren Schieber.  Fig. 10 shows a schematic representation of a locking member with a linear, pivotable slide.
Fig. 11 zeigt eine schematische Darstellung eines Sperrglieds mit einem linearen, vierschiebbaren Schieber. Fig. 11 shows a schematic representation of a locking member with a linear, four-slide valve.
Fig. 12 zeigt eine schematische Darstellung eines Sperrglieds mit einem Drehschieber in offner und geschlossener Stellung. Fig. 12 shows a schematic representation of a locking member with a rotary valve in the open and closed positions.
Fig. 13 zeigt eine Abwandlung des Drehschiebers aus Fig. 12. FIG. 13 shows a modification of the rotary valve from FIG. 12.
Das erfindungsgemäße Eintreibgerät aus Fig. 1 umfasst ein handgeführtes Gehäuse 1 , in dem ein Energieübertragungselement 2 mit einer Antriebseinrichtung 7 aufgenommen ist. Im vorliegenden Ausführungsbeispiel handelt es sich um ein elektrisch angetriebenes Eintreibgerät. Das Energieübertragungselement 2 umfasst einen linear geführten Kolben mit einem Treibglied 4 in Form eines im Wesentlichen zylindrischen Stößels aus besonders verschleißarmem Material. In einem vorderen Bauelement 5 des Eintreibgerätes ist ein gedämpfter Anschlag 6 (siehe Fig. 3c) für den Kolben angeordnet. The drive-in device according to the invention from FIG. 1 comprises a hand-guided housing 1, in which a power transmission element 2 with a drive device 7 is accommodated. In the present embodiment, it is an electrically driven tacker. The energy transmission element 2 comprises a linearly guided piston with a drive member 4 in the form of a substantially cylindrical plunger made of particularly low-wear material. In a front component 5 of the tacker, a damped stop 6 (see FIG. 3c) is arranged for the piston.
Befestigungselemente 8 (siehe Fig. 5c, Fig. 10) sind in einem Magazin 9 aufgenommen. Durch eine Zufuhrmechanik wird jeweils ein Befestigungselement in eine Kammer 10 des Bauelements 5 transportiert, von wo es durch Einwirkung des Treibglieds 4 beschleunigt und durch ein hülsenförmiges Mündungsteil 1 1 hindurch in ein Werkstück (nicht dargestellt) eingetrieben wird. Fasteners 8 (see FIGS. 5 c, 10) are received in a magazine 9. By a feed mechanism, a fastener is in each case transported into a chamber 10 of the component 5, from where it accelerated by the action of the drive member 4 and is driven through a sleeve-shaped mouth part 1 1 in a workpiece (not shown).
Die Antriebseinrichtung 7 umfasst vorliegend einen Elektromotor 7a, ein Getriebe 7b mit daran anschließender Drehspindel (nicht dargestellt) und ein Federglied 7c zur Zwischenspeicherung von mechanischer Energie, dessen Ende in einer Federaufnahme 3 aufgenommen ist. Vor einem Auslösen eines Eintreibvorgangs erfolgt ein Spannen des Federglieds 7c und ein Rücksteilen des Kolbens in eine Ausgangsposition auf bekannte Weise. In diesem Betriebszustand kann ein Auslösen des Eintreibvorgangs erfolgen, sofern weitere Sicherheitskriterien erfüllt sind. The drive device 7 in the present case comprises an electric motor 7a, a gear 7b with adjoining rotary spindle (not shown) and a spring member 7c for intermediate storage of mechanical energy, whose end is received in a spring receptacle 3. Before triggering a driving operation takes place a tensioning of the spring member 7c and a back dividing the piston in a starting position in a known manner. In this operating state, a triggering of the driving operation can take place, if further safety criteria are met.
Nach einem Auslösen des Eintreibvorgangs beschleunigt das Federglied 7c den Kolben des Energieübertragungselements 2 in Richtung des Anschlags 6. Dabei wird das Treibglied 4 gegen das Befestigungselement 8 geschlagen, so dass dieses in das Werkstück eingetrieben wird. After triggering the driving operation accelerates the spring member 7c, the piston of the power transmission element 2 in the direction of the stop 6. In this case, the drive member 4 is struck against the fastener 8, so that this is driven into the workpiece.
In einem dabei von dem Treibglied 4 überfahrenen Weg ist ein Sperrglied 12 angeordnet, wobei das Sperrglied eine sperrende Anordnung (siehe etwa Fig. 2 bis Fig. Fig. 3c, Fig. 6, Fig. 7, Fig. 10) oder eine freigebende Anordnung (siehe etwa Fig. 4 bis Fig. 5c, Fig. 8, Fig. 9) aufweisen kann. A blocking member 12 is arranged in a path traveled by the drive member 4, the blocking member being a blocking arrangement (see, for example, FIGS. 2 to 3 c, 6, 7, 10) or a releasing arrangement (see, for example, Fig. 4 to Fig. 5c, Fig. 8, Fig. 9) may have.
Das Sperrglied umfasst jeweils einen Schieber 13, der je nach gezeigter Ausführungsform als linearer Schieber oder als Drehschieber ausgebildet sein kann. Falls ein Auslösen des Eintreibgerätes im gesperrten Zustand des Sperrglieds 12 erfolgen sollte, so würde das Treibglied 4 gegen den Schieber 13 des Sperrglieds 12 treffen und hierdurch in seinem Weg aufgehalten. Dabei wird die Bewegungsenergie des Energieübertragungselementes abgefangen und nicht auf das Befestigungselement geleitet. The locking member each comprises a slider 13, which may be formed depending on the embodiment shown as a linear slide or a rotary valve. If a release of the tacker in the locked state of the locking member 12 should take place, the driving member 4 would hit against the slider 13 of the locking member 12 and thereby stopped in his path. The kinetic energy of the energy transmission element is intercepted and not directed to the fastener.
Das vorliegende Eintreibgerät weist zudem weitere Sicherheitseinrichtungen (nicht dargestellt) auf, durch die ein Auslösen des Gerätes in einem nicht betriebsgemäßen Zustand verhindert wird. Sollte aus Gründen einer Funktionsstörung oder einer Manipulation dennoch ein Auslösen erfolgen, so würde das Sperrglied 12 als zusätzliche Sicherung greifen, die eine Energieübertragung auf das Befestigungselement unmittelbar verhindert. Die weiteren Sicherheitseinrichtungen können rein mechanischer Natur sein oder auch elektrische Schalter wie etwa Kontakte, Photozellen oder Ähnliches aufweisen. Im vorliegenden Fall liegt ein betriebsgemäßer Zustand zum Eintreiben des Befestigungselementes 8 nur dann vor, wenn das Mündungsteil 11 gegen ein Werkstück angedrückt ist. Hierzu weist das Mündungsteil 1 1 eine Einschiebbarkeit um einen Hub entlang seiner Längsrichtung bzw. in der Eintreibrichtung auf. Das Mündungsteil 11 ist mit einer Anpressstange 14 gekoppelt, die gegen eine Feder 14a abgestützt ist. So werden bei einem Absetzen des Gerätes die Anpressstange 14 und das Mündungsteil 1 1 wieder zurückgeschoben, und das Gerät wird gegen ein Auslösen des Eintreibvorgangs gesichert. Das federbelastete, einschiebbare Mündungsteil 11 bildet daher ein Andruckglied und ein Sensorglied im Sinne der Erfindung aus. The present tacker also has other safety devices (not shown), by the triggering of the device is prevented in a non-operational state. If, for reasons of malfunction or manipulation, nevertheless triggering take place, then the blocking member 12 would act as an additional safeguard, which immediately prevents energy transfer to the fastening element. The further safety devices may be of a purely mechanical nature or may also have electrical switches, such as contacts, photocells or the like. In the present case, an operational state for driving in the fastening element 8 is only present when the mouth part 11 is pressed against a workpiece. For this purpose, the mouth part 1 1 has an insertability about a stroke along its longitudinal direction or in the driving direction. The mouth part 11 is coupled to a pressing rod 14, which is supported against a spring 14a. Thus, when the device is set down, the pressing rod 14 and the mouth part 11 are pushed back again, and the device is secured against triggering of the driving operation. The spring-loaded, insertable mouth part 11 therefore forms a pressing member and a sensor member according to the invention.
Die Anpressstange 14 ist zudem mechanisch mit dem Sperrglied 12 verbunden, so dass durch den Hub der Anpressstange 14 zugleich der Schieber 13 des Sperrglieds 12 betätigt wird. The pressing rod 14 is also mechanically connected to the locking member 12, so that at the same time the slide 13 of the locking member 12 is actuated by the stroke of the pressing rod 14.
Die einzelnen konkreten Ausführungsbeispiele der Erfindung unterscheiden sich dabei im Wesentlichen durch Bauart und mechanische Ansteuerung des Sperrglieds 12 mit dem Schieber 13. The individual concrete embodiments of the invention differ essentially by design and mechanical control of the locking member 12 with the slider 13th
Im Beispiel nach Fig. 1 bis Fig. 5c ist der Schieber 13 als ein Drehschieber 13a ausgebildet. Dieser umfasst eine zylindrische Walze 15 mit einer seitlichen Ausnehmung 16 in Form eines Zylindersegmentes. In der Sperrstellung überdeckt der Schieber 13a eine Durchtrittsöffnung 17 für das Treibglied 4 teilweise, so dass das Treibglied gegen den Schieber schlagen würde. In der Freigabestellung überdeckt die Durchtrittsöffnung 17 mit der Ausnehmung 16, so dass sie vollständig frei ist. Der als Drehschieber ausgebildete Schieber 13a wird über einen Drehhebel 18 verdreht, mit dem die Anpressstange 14 gelenkig verbunden ist. In dem Beispiel nach Fig. 6 bis Fig. 9 ist der Schieber 13 als linearer Schieber 13b ausgebildet. Der Schieber 13b ragt in einem gesperrten Zustand von der Seite in die Durchtrittsöffnung 17 hinein und versperrt diese (siehe Fig. 7). In der freigegebenen Stellung ist der Schieber 13b um einen Hub gegen die Kraft einer Feder (nicht dargestellt) zurückgezogen, so dass eine Ausnehmung 19 des Schiebers 13b mit der Durchtrittsöffnung 17 überdeckt und diese freigibt. Die freigebende Bewegung des linearen Schiebers 13b wird über einen gelenkig mit dem Bauelement 5 verbundenen Schwenkhebel 20 gesteuert, wobei der Schwenkhebel 20 wiederum als Teil einer verkoppelten Mechanik mit der Anpressstange 14 und dem Mündungsteil 11 ausgebildet ist. Fig. 10 zeigt eine schematische Darstellung einer weiteren Ausführung eines linearen Schiebers 13, 13c. Dieser ist nicht exakt linear verschiebbar ausgebildet, sondern wird um ein Gelenk 21 verschwenkt, wobei ein Zapfen 22 des Schiebers 13c in die Durchtrittsöffnung 17 ein- oder aus ausschwenkt. Fig. 1 1 zeigt eine schematisierte Darstellung des Prinzips des linearen Schiebers aus Fig. 6 bis Fig. 9. In the example according to FIGS. 1 to 5c, the slide 13 is designed as a rotary slide 13a. This comprises a cylindrical roller 15 with a lateral recess 16 in the form of a cylinder segment. In the locked position, the slider 13a partially covers a passage opening 17 for the drive member 4, so that the drive member would strike against the slider. In the release position covers the passage opening 17 with the recess 16 so that it is completely free. Trained as a rotary valve slide 13a is rotated by a rotary lever 18, with which the pressure bar 14 is pivotally connected. In the example according to FIGS. 6 to 9, the slide 13 is designed as a linear slide 13 b. The slider 13b protrudes from the side into the passage opening 17 in a locked state and blocks it (see FIG. 7). In the released position, the slider 13b is retracted by a stroke against the force of a spring (not shown), so that a recess 19 of the slider 13b covered with the passage opening 17 and this releases. The releasing movement of the linear slider 13b becomes controlled via a pivotally connected to the device 5 pivoting lever 20, wherein the pivot lever 20 is in turn formed as part of a coupled mechanism with the pressure bar 14 and the mouth part 11. Fig. 10 shows a schematic representation of another embodiment of a linear slider 13, 13c. This is not formed exactly linearly displaceable, but is pivoted about a hinge 21, wherein a pin 22 of the slider 13c in the passage opening 17 on or pivots out. 1 1 shows a schematic representation of the principle of the linear slide of FIGS. 6 to 9.
Fig. 12 zeigt eine schematische Darstellung eines Drehschiebers im geschlossenen und geöffneten Zustand, wobei der Drehschieber 13 als zylindrische Walze mit einer zentralen, senkrecht zur Zylinderachse gerichteten Bohrung 23 ausgeformt ist. Bei entsprechender Orientierung gibt die Bohrung 23 die Durchtrittsöffnung 17 frei. Fig. 12 shows a schematic representation of a rotary valve in the closed and open state, wherein the rotary valve 13 is formed as a cylindrical roller with a central, directed perpendicular to the cylinder axis bore 23. With appropriate orientation, the bore 23, the passage opening 17 is free.
Fig. 13 zeigt schematisch eine Abwandlung eines solchen Drehschiebers mit nicht zentraler Ausnehmung, was dem Ausführungsbeispiel nach Fig. 1 bis Fig. 5c entspricht. Fig. 13 shows schematically a modification of such a rotary valve with non-central recess, which corresponds to the embodiment of Fig. 1 to Fig. 5c.
Die Merkmale der verschiedenen Ausführungsbeispiele können je nach Anforderungen miteinander kombiniert werden. The features of the various embodiments may be combined with each other as required.

Claims

PATENTANSPRUECHE cLAIMS
1. Eintreibgerät, umfassend 1. tacker, comprising
ein handgeführtes Gehäuse (1) mit einem darin aufgenommenen, antreibbar bewegbaren Energieübertragungselement (2) zur Übertragung von Energie auf ein Befestigungselement (8),  a hand-guided housing (1) having a drivably movable energy transmission element (2) received therein for transmitting energy to a fastening element (8),
ein Treibglied (4) des Energieübertragungselements (2), wobei das Treibglied (4) zum Eintreiben auf das Befestigungselement (8) wirkt, und  a driving member (4) of the energy transmitting member (2), the driving member (4) acting to drive on the mounting member (8), and
ein Sensorglied (11) zur Bestimmung eines betriebsgemäßen Zustands des Eintreibgerätes, wobei ein Eintreibvorgang nur bei Vorliegen des betriebsgemäßen Zustands freigegeben ist,  a sensor member (11) for determining an operating condition of the tacker, wherein a drive-in operation is released only in the presence of the operational state,
dadurch gekennzeichnet,  characterized,
dass ein Sperrglied (12, 13) bei Vorliegen des nicht betriebsgemäßen Zustands in einem Weg des Energieübertragungselementes sperrend angeordnet ist, wobei das Sperrglied (12, 13) nach einem Auslösen eines Eintreibvorgangs das Energieübertragungselement (2) abfangen kann.  a blocking member (12, 13) is arranged blocking in a path of the energy transmission element in the presence of the non-operational state, wherein the blocking member (12, 13) can intercept the energy transmission element (2) after triggering a driving operation.
2. Eintreibgerät nach Anspruch 1 , dadurch gekennzeichnet, dass das Sperrglied einen beweglichen Schieber (13) umfasst, wobei der Schieber (13) in einer Sperrstellung zwischen dem Treibglied (4) und dem Befestigungselement (8) angeordnet ist, und wobei der Schieber (13) in einer Freigabestellung einen Verfahrweg des Treibgliedes (4) gegen das Befestigungsglied (8) freigibt. 2. A tacker according to claim 1, characterized in that the locking member comprises a movable slide (13), wherein the slide (13) is arranged in a blocking position between the driving member (4) and the fastening element (8), and wherein the slide ( 13) releases in a release position a travel path of the drive member (4) against the attachment member (8).
3. Eintreibgerät nach Anspruch 2, dadurch gekennzeichnet, dass der Schieber (13) über eine Mechanik (14, 18, 20, 21) mit einem Andruckglied (11) verbunden ist, wobei ein Andrücken des Andruckgliedes (1 1) gegen ein Werkstück den Schieber (13) in die Freigabestellung bewegt. 3. A tacker according to claim 2, characterized in that the slide (13) via a mechanism (14, 18, 20, 21) with a pressure member (11) is connected, wherein a pressing of the pressure member (1 1) against a workpiece Slider (13) moves to the release position.
4. Eintreibgerät nach Anspruch 3, dadurch gekennzeichnet, dass das Sperrglied (12, 13) mittels einer Anpressstange (14) mit dem Andruckglied (11) verbunden ist. 4. A tacker according to claim 3, characterized in that the locking member (12, 13) by means of a pressing bar (14) with the pressing member (11) is connected.
5. Eintreibgerät nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Schieber (13) als ein Drehschieber (13a) ausgebildet ist. 5. tacker according to one of claims 2 to 4, characterized in that the slide (13) as a rotary valve (13 a) is formed.
6. Eintreibgerät nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Schieber (13) als ein linearer Schieber (13b, 13c) ausgebildet ist. 6. tacker according to one of claims 2 to 4, characterized in that the slide (13) as a linear slide (13 b, 13 c) is formed.
7. Eintreibgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Eintreibgerät einen elektrischen Motor (7a) als Antriebsquelle aufweist. 7. A tacker according to one of the preceding claims, characterized in that the tacker has an electric motor (7a) as a drive source.
8. Eintreibgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Sensorglied (1 1) ein Andruckglied (11) in einem vorderen Bereich des Eintreibgerätes umfasst, wobei das Andruckglied (11) zur Freigabe des Eintreibvorganges gegen ein Werkstück abgestützt ist. 8. A tacker according to one of the preceding claims, characterized in that the sensor member (1 1) comprises a pressure member (11) in a front region of the tacker, wherein the pressure member (11) is supported for releasing the driving operation against a workpiece.
9. Eintreibgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zusätzlich zu dem Sperrglied (12, 13) eine weitere Sicherheitseinrichtung an dem Eintreibgerät vorgesehen ist, wobei das Auslösen eines Eintreibvorgangs mittels der weiteren Sicherheitseinrichtung verhindert ist. 9. A tacker according to one of the preceding claims, characterized in that in addition to the locking member (12, 13), a further safety device is provided on the tacker, wherein the triggering of a driving operation is prevented by means of the further safety device.
EP13750302.5A 2012-08-17 2013-08-13 Fastener driving tool with safety lock Active EP2885110B1 (en)

Applications Claiming Priority (2)

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DE102012214694.6A DE102012214694A1 (en) 2012-08-17 2012-08-17 Tacker with safety lock
PCT/EP2013/066873 WO2014026966A2 (en) 2012-08-17 2013-08-13 Fastener driving tool with safety lock

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JP (1) JP6035004B2 (en)
CN (1) CN104703761B (en)
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CN104703761A (en) 2015-06-10
CN104703761B (en) 2017-06-09
JP6035004B2 (en) 2016-11-30
JP2015526304A (en) 2015-09-10
ES2643267T3 (en) 2017-11-21
DE102012214694A1 (en) 2014-02-20
US10046448B2 (en) 2018-08-14
US20150224637A1 (en) 2015-08-13
WO2014026966A3 (en) 2014-07-10
WO2014026966A2 (en) 2014-02-20
EP2885110B1 (en) 2017-07-05

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