EP3727763B1 - Fastener driving device - Google Patents

Fastener driving device Download PDF

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Publication number
EP3727763B1
EP3727763B1 EP18808400.8A EP18808400A EP3727763B1 EP 3727763 B1 EP3727763 B1 EP 3727763B1 EP 18808400 A EP18808400 A EP 18808400A EP 3727763 B1 EP3727763 B1 EP 3727763B1
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EP
European Patent Office
Prior art keywords
energy
fan
motor
support structure
damping element
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Application number
EP18808400.8A
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German (de)
French (fr)
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EP3727763A1 (en
Inventor
Iwan Wolf
Dominik Schmidt
Mario Grazioli
Kurt Bauernfeind
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Hilti AG
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Hilti AG
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Publication of EP3727763A1 publication Critical patent/EP3727763A1/en
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    • 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
    • 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
    • B25F5/006—Vibration damping means
    • 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
    • B25F5/008—Cooling means

Definitions

  • the application relates to a device for driving a fastener into a substrate.
  • Such devices usually have a piston for transmitting energy to the fastener.
  • the energy required for this must be made available in a very short time, which is why, for example, in the case of so-called spring nailers, a spring is first tensioned, which abruptly transfers the tensioning energy to the piston during the driving process and accelerates it towards the fastening element.
  • the abruptly released energy, with which the fastener is driven into the ground, causes a recoil, which mechanically stresses some components of such devices.
  • EP2189246A2 discloses the preamble of claim 1.
  • One aspect not according to the invention relates to a device for driving a fastener into a substrate in a driving direction, with a motor, with a support structure that carries the motor, and with a damping element by means of which the motor is held on the support structure.
  • the damping element comprises a ring element, which extends the motor in a direction that is preferably perpendicular to the driving direction level. Such an arrangement of the damping element allows the motor a great deal of freedom of movement in the driving direction relative to the supporting structure.
  • a configuration that is not advantageous according to the invention is characterized in that the motor is held on the support structure only by means of the damping element and is otherwise motion-decoupled in the driving-in direction relative to the support structure. Furthermore, the motor is preferably decoupled in terms of movement in all directions relative to the support structure.
  • the ring element comprises an elastic material, preferably an elastomer, in particular PU, EPDM or FKM.
  • the ring element preferably consists of this.
  • ring element is designed in the shape of a circular ring.
  • ring element has an elliptical, in particular circular, cross-section in the circumferential direction.
  • an embodiment that is not advantageous according to the invention is characterized in that the device has a housing, with the support structure being rigidly connected to the housing or being part of the housing.
  • the support structure has a groove for partially receiving the ring element.
  • the groove preferably runs in the circumferential direction of the ring element.
  • the motor has a groove for partially accommodating the ring element.
  • the groove preferably runs in the circumferential direction of the ring element.
  • a configuration that is not advantageous according to the invention is characterized in that the device comprises an energy transmission element, which can be moved between an initial position and a setting position, for transmitting energy to the fastening element.
  • a not according to the invention advantageous embodiment is characterized in that the device has a mechanical energy store for storing mechanical energy and an energy transmission device for transmitting energy from an energy source has the mechanical energy store, wherein the energy transfer device has the motor for transferring the energy from the energy source to the mechanical energy store.
  • the mechanical energy store preferably includes a spring.
  • one aspect of the application relates to a device for driving a fastener into a substrate in a driving direction, with a heat source, with a fan for cooling the heat source, with a support structure that carries the fan, and with a fan damping element, by means of which the fan is held on the supporting structure or on the heat source.
  • An advantageous embodiment is characterized in that the device comprises a further damping element, by means of which the heat source is held on the support structure.
  • this configuration is characterized in that the fan has a housing formed by the fan muffling member.
  • the fan damping element has at least one projection
  • the support structure or the heat source has a receptacle in which the projection is accommodated.
  • the receptacle preferably has an undercut in which the projection engages.
  • the fan damping element and/or the further damping element comprises an elastic material, preferably an elastomer, in particular PU, EPDM or FKM.
  • the fan damping element preferably consists of this.
  • An advantageous embodiment is characterized in that the device has a housing, with the support structure being rigidly connected to the housing or being part of the housing.
  • An advantageous embodiment is characterized in that the device comprises an energy transmission element, which can be moved between an initial position and a setting position, for the transmission of energy to the fastening element.
  • thermoelectric generator includes a motor, preferably an electric motor.
  • An advantageous embodiment is characterized in that the device has a mechanical energy store for storing mechanical energy and an energy transfer device for transferring energy from an energy source to the mechanical energy store, the energy transfer device having the motor for transferring the energy from the energy source to the mechanical energy store having.
  • the mechanical energy store preferably comprises a spring, particularly preferably a helical spring.
  • An advantageous embodiment is characterized in that the energy source comprises an electric battery which supplies the motor and the fan with electric energy.
  • the driving-in device 10 for driving a fastener, such as a nail or bolt, into a substrate in a side view.
  • the driving-in device 10 has an energy transmission element, not shown, for transmitting energy to the fastening element, and a housing 20, in which the energy transmission element and a drive device, also not shown, for transporting the energy transmission element are accommodated.
  • the driving device 10 also has a handle 30 , a magazine 40 and a bridge 50 connecting the handle 30 to the magazine 40 .
  • the magazine is not detachable.
  • a scaffolding hook 60 for suspending the driving-in device 10 on a scaffolding or the like and an electrical energy store designed as a rechargeable battery 590 are fastened to the bridge 50 .
  • a trigger 34 and a grip sensor designed as a manual switch 35 are arranged on the grip 30 .
  • the driving-in device 10 has a guide channel 700 for guiding the fastening element and a pressing device 750 for detecting a distance of the driving-in device 10 from a substrate (not shown). Alignment of the driving-in device perpendicular to a substrate is supported by an alignment aid 45 .
  • Drive device 70 comprises an electric motor, not shown, for converting electrical energy from battery 590 into rotational energy, a torque transmission device comprising a gearbox 400 for transmitting a torque of the electric motor to a motion converter embodied as a spindle drive 300, a power transmission device comprising a roller train 260 for transmitting a force from the movement converter to a mechanical energy store designed as a spring 200 and for transmitting a force from the spring to the energy transmission element.
  • the motor 480 is designed as a brushless DC motor and has motor coils 495 for driving the motor output 490, which includes a permanent magnet 491.
  • the motor 480 is held by a motor holder (not shown) and is supplied with electrical energy by means of the crimp contacts 506 and is controlled by means of the control line 505 .
  • a rotating element on the motor side designed as a motor pinion 410, is fastened in a rotationally fixed manner to the motor output 490 by a press fit.
  • the rotary element is fastened in a materially bonded manner, in particular by gluing or spraying on, or in a form-fitting manner.
  • the motor pinion 410 is driven by the motor output 490 and in turn drives a not shown Torque transmission device.
  • a holding device 450 is rotatably mounted on the one hand by means of a bearing 452 on the motor output 490 and on the other hand is connected non-rotatably to the motor housing by means of an annular mounting element 470 .
  • a ring-shaped sealing element 460 which serves to seal against dust and the like.
  • the motor housing 24 is sealed off from the rest of the housing, with the fan 565 drawing in air through the ventilation slots 33 to cool the motor 480 and the rest of the drive device being protected from dust.
  • the holding device 450 has a magnet coil 455 which, when energized, exerts an attractive force on one or more magnet armatures 456 .
  • the magnet armatures 456 extend into armature recesses 457 embodied as openings in the motor pinion 410 and are thus arranged in a rotationally fixed manner on the motor pinion 410 and thus on the motor output 490 . Due to the force of attraction, the magnet armatures 456 are pressed against the holding device 450, so that a rotational movement of the motor output 490 relative to the motor housing is braked or prevented.
  • FIG. 4 shows another example of a driving device 800 with a motor 810 and a support structure 820, which is part of a housing of the driving device 800 and carries the motor 810, which is held on the support structure 820 by means of two damping elements 830 designed as ring elements.
  • the damping elements 830 each span the motor 810 in a plane extending perpendicular to the driving direction of the driving device. Otherwise, the motor 810 is motion-decoupled in all directions relative to the support structure 820 .
  • the damping elements 830 consist of an elastomer and are designed in the shape of a circular ring. They have a circular cross-section and are designed as O-rings.
  • FIG. 12 shows a sectional view of the arrangement 4 .
  • the support structure 820 has grooves 840 for partially accommodating a damping element 830 in each case, with each groove 840 being formed completely circumferentially in the circumferential direction of the respective damping element 830 .
  • the motor 810 has two grooves 850 for partially accommodating a damping element 830 each, with each groove 850 being designed to run completely around the respective damping element 830 in the circumferential direction.
  • FIG. 6 shows another example of a driving device 900 with a motor 910 and a support structure 920, which is part of a housing of the driving device 900 and carries the motor 910, which is held on the support structure 920 by means of two damping elements 930 designed as ring elements.
  • the damping elements 930 each span the motor 910 in a plane extending perpendicular to the driving direction of the driving device.
  • the damping elements 830 consist of an elastomer and are designed in the shape of a circular ring. They have a circular cross-section and are designed as O-rings.
  • the driving device 900 has a fan 960 which is operated by the same energy source as the motor 910 and which is held on the support structure 920 by means of a fan damping element 970.
  • the fan is held on the motor by means of the fan damping element and is therefore additionally damped by means of the damping elements of the motor.
  • the fan damping element 970 consists of an elastomer and forms a housing for the fan 960 and has a preferably T-shaped projection 980 which is accommodated in a receptacle 990 of the support structure 920.
  • the projection 980 engages in an undercut of the receptacle.

Description

Technisches Gebiettechnical field

Die Anmeldung betrifft eine Vorrichtung zum Eintreiben eines Befestigungselementes in einen Untergrund.The application relates to a device for driving a fastener into a substrate.

Stand der TechnikState of the art

Derartige Vorrichtungen weisen üblicherweise einen Kolben zur Übertragung von Energie auf das Befestigungselement auf. Die dazu erforderliche Energie muss dabei in sehr kurzer Zeit zur Verfügung gestellt werden, weshalb beispielsweise bei sogenannten Federnaglern zunächst eine Feder gespannt wird, welche während des Eintreibvorgangs die Spannenergie schlagartig an den Kolben abgibt und diesen auf das Befestigungselement zu beschleunigt. Die schlagartig freiwerdende Energie, mit der das Befestigungselement in den Untergrund eingetrieben wird, bewirkt einen Rückstoss, welcher einige Komponenten solcher Vorrichtungen mechanisch belastet.Such devices usually have a piston for transmitting energy to the fastener. The energy required for this must be made available in a very short time, which is why, for example, in the case of so-called spring nailers, a spring is first tensioned, which abruptly transfers the tensioning energy to the piston during the driving process and accelerates it towards the fastening element. The abruptly released energy, with which the fastener is driven into the ground, causes a recoil, which mechanically stresses some components of such devices.

EP2189246A2 offenbart den Oberbegriff des Anspruches 1. EP2189246A2 discloses the preamble of claim 1.

Andere Vorrichtungen sind aus der US2016/023342A1 , US2011/303718A1 , EP2226162A1 , EP2397266A2 oder DE102014103854A1 bekannt.Other devices are from the US2016/023342A1 , US2011/303718A1 , EP2226162A1 , EP2397266A2 or DE102014103854A1 known.

Darstellung der ErfindungPresentation of the invention

Ein Aspekt nicht gemäß der Erfindung betrifft eine Vorrichtung zum Eintreiben eines Befestigungselementes in einen Untergrund in einer Eintreibrichtung, mit einem Motor, mit einer Tragstruktur, welche den Motor trägt, und mit einem Dämpfelement, mittels dessen der Motor an der Tragstruktur gehalten ist. Das Dämpfelement umfasst ein Ringelement, welches den Motor in einer sich bevorzugt senkrecht zur Eintreibrichtung erstreckenden Ebene umspannt. Eine solche Anordnung des Dämpfelements lässt dem Motor relativ zur Tragstruktur eine grosse Bewegungsfreiheit in der Eintreibrichtung.One aspect not according to the invention relates to a device for driving a fastener into a substrate in a driving direction, with a motor, with a support structure that carries the motor, and with a damping element by means of which the motor is held on the support structure. The damping element comprises a ring element, which extends the motor in a direction that is preferably perpendicular to the driving direction level. Such an arrangement of the damping element allows the motor a great deal of freedom of movement in the driving direction relative to the supporting structure.

Eine nicht gemäß der Erfindung vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass der Motor nur mittels des Dämpfelements an der Tragstruktur gehalten ist und im Übrigen in der Eintreibrichtung relativ zur Tragstruktur bewegungsentkoppelt ist. Bevorzugt ist der Motor im Übrigen in allen Richtungen relativ zur Tragstruktur bewegungsentkoppelt.A configuration that is not advantageous according to the invention is characterized in that the motor is held on the support structure only by means of the damping element and is otherwise motion-decoupled in the driving-in direction relative to the support structure. Furthermore, the motor is preferably decoupled in terms of movement in all directions relative to the support structure.

Eine nicht gemäß der Erfindung vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass das Ringelement ein elastisches Material, bevorzugt ein Elastomer, insbesondere PU, EPDM oder FKM, umfasst. Bevorzugt besteht das Ringelement daraus.An embodiment that is not advantageous according to the invention is characterized in that the ring element comprises an elastic material, preferably an elastomer, in particular PU, EPDM or FKM. The ring element preferably consists of this.

Eine nicht gemäß der Erfindung vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass das Ringelement kreisringförmig ausgebildet ist. Eine weitere vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass das Ringelement in Umfangsrichtung einen elliptischen, insbesondere kreisförmigen, Querschnitt aufweist.An embodiment that is not advantageous according to the invention is characterized in that the ring element is designed in the shape of a circular ring. A further advantageous embodiment is characterized in that the ring element has an elliptical, in particular circular, cross-section in the circumferential direction.

Eine nicht gemäß der Erfindung vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Vorrichtung ein Gehäuse aufweist, wobei die Tragstruktur starr mit dem Gehäuse verbunden oder Teil des Gehäuses ist.An embodiment that is not advantageous according to the invention is characterized in that the device has a housing, with the support structure being rigidly connected to the housing or being part of the housing.

Eine nicht gemäß der Erfindung vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Tragstruktur eine Nut für eine teilweise Aufnahme des Ringelements aufweist. Bevorzugt verläuft die Nut in Umfangsrichtung des Ringelements. Eine weitere vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass der Motor eine Rille für eine teilweise Aufnahme des Ringelements aufweist. Bevorzugt verläuft die Rille in Umfangsrichtung des Ringelements.An embodiment that is not advantageous according to the invention is characterized in that the support structure has a groove for partially receiving the ring element. The groove preferably runs in the circumferential direction of the ring element. A further advantageous embodiment is characterized in that the motor has a groove for partially accommodating the ring element. The groove preferably runs in the circumferential direction of the ring element.

Eine nicht gemäß der Erfindung vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Vorrichtung ein zwischen einer Ausgangsstellung und einer Setzstellung bewegbares Energieübertragungselement zur Übertragung von Energie auf das Befestigungselement umfasst.A configuration that is not advantageous according to the invention is characterized in that the device comprises an energy transmission element, which can be moved between an initial position and a setting position, for transmitting energy to the fastening element.

Eine nicht gemäß der Erfindung vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Vorrichtung einen mechanischen Energiespeicher zur Speicherung von mechanischer Energie und eine Energieübertragungseinrichtung zur Übertragung von Energie aus einer Energiequelle auf den mechanischen Energiespeicher aufweist, wobei die Energieübertragungseinrichtung den Motor zur Übertragung der Energie aus der Energiequelle auf den mechanischen Energiespeicher aufweist. Bevorzugt umfasst der mechanische Energiespeicher eine Feder.A not according to the invention advantageous embodiment is characterized in that the device has a mechanical energy store for storing mechanical energy and an energy transmission device for transmitting energy from an energy source has the mechanical energy store, wherein the energy transfer device has the motor for transferring the energy from the energy source to the mechanical energy store. The mechanical energy store preferably includes a spring.

Wie in Anspruch 1 dargestellt, ein Aspekt der Anmeldung betrifft eine Vorrichtung zum Eintreiben eines Befestigungselementes in einen Untergrund in einer Eintreibrichtung, mit einer Wärmequelle, mit einem Lüfter zur Kühlung der Wärmequelle, mit einer Tragstruktur, welche den Lüfter trägt, und mit einem Lüfterdämpfelement, mittels dessen der Lüfter an der Tragstruktur oder an der Wärmequelle gehalten ist.As shown in claim 1, one aspect of the application relates to a device for driving a fastener into a substrate in a driving direction, with a heat source, with a fan for cooling the heat source, with a support structure that carries the fan, and with a fan damping element, by means of which the fan is held on the supporting structure or on the heat source.

Eine vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Vorrichtung ein weiteres Dämpfelement umfasst, mittels dessen die Wärmequelle an der Tragstruktur gehalten ist.An advantageous embodiment is characterized in that the device comprises a further damping element, by means of which the heat source is held on the support structure.

Wie in Anspruch 1 dargestellt, diese Ausgestaltung ist dadurch gekennzeichnet, dass der Lüfter eine Einhausung aufweist, welche durch das Lüfterdämpfelement gebildet ist.As set forth in claim 1, this configuration is characterized in that the fan has a housing formed by the fan muffling member.

Eine vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass das Lüfterdämpfelement mindestens einen Vorsprung aufweist, und wobei die Tragstruktur beziehungsweise die Wärmequelle eine Aufnahme aufweist, in welcher der Vorsprung aufgenommen ist. Bevorzugt weist die Aufnahme einen Hinterschnitt auf, in welchen der Vorsprung eingreift. Eine vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass das Lüfterdämpfelement und/oder das weitere Dämpfelement ein elastisches Material, bevorzugt ein Elastomer, insbesondere PU, EPDM oder FKM, umfasst. Bevorzugt besteht das Lüfterdämpfelement daraus.An advantageous embodiment is characterized in that the fan damping element has at least one projection, and the support structure or the heat source has a receptacle in which the projection is accommodated. The receptacle preferably has an undercut in which the projection engages. An advantageous embodiment is characterized in that the fan damping element and/or the further damping element comprises an elastic material, preferably an elastomer, in particular PU, EPDM or FKM. The fan damping element preferably consists of this.

Eine vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Vorrichtung ein Gehäuse aufweist, wobei die Tragstruktur starr mit dem Gehäuse verbunden oder Teil des Gehäuses ist.An advantageous embodiment is characterized in that the device has a housing, with the support structure being rigidly connected to the housing or being part of the housing.

Eine vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Vorrichtung ein zwischen einer Ausgangsstellung und einer Setzstellung bewegbares Energieübertragungselement zur Übertragung von Energie auf das Befestigungselement umfasst.An advantageous embodiment is characterized in that the device comprises an energy transmission element, which can be moved between an initial position and a setting position, for the transmission of energy to the fastening element.

Eine vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Wärmequelle einen Motor umfasst, bevorzugt einen elektrischen Motor.An advantageous embodiment is characterized in that the heat source includes a motor, preferably an electric motor.

Eine vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Vorrichtung einen mechanischen Energiespeicher zur Speicherung von mechanischer Energie und eine Energieübertragungseinrichtung zur Übertragung von Energie aus einer Energiequelle auf den mechanischen Energiespeicher aufweist, wobei die Energieübertragungseinrichtung den Motor zur Übertragung der Energie aus der Energiequelle auf den mechanischen Energiespeicher aufweist. Bevorzugt umfasst der mechanische Energiespeicher eine Feder, besonders bevorzugt eine Schraubenfeder.An advantageous embodiment is characterized in that the device has a mechanical energy store for storing mechanical energy and an energy transfer device for transferring energy from an energy source to the mechanical energy store, the energy transfer device having the motor for transferring the energy from the energy source to the mechanical energy store having. The mechanical energy store preferably comprises a spring, particularly preferably a helical spring.

Eine vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, dass die Energiequelle eine elektrische Batterie umfasst, welche den Motor und den Lüfter mit elektrischer Energie versorgt.An advantageous embodiment is characterized in that the energy source comprises an electric battery which supplies the motor and the fan with electric energy.

Ausführungsbeispieleexemplary embodiments

Nachfolgend werden Ausführungsformen einer Vorrichtung zum Eintreiben eines Befestigungselementes in einen Untergrund anhand von Beispielen unter Bezugnahme auf die Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine Seitenansicht einer Eintreibvorrichtung,
Fig. 2
eine Seitenansicht einer Eintreibvorrichtung mit geöffnetem Gehäuse,
Fig. 3
einen Längsschnitt eines Elektromotors,
Fig. 4
eine perspektivische Ansicht eines Elektromotors,
Fig. 5
einen Längsschnitt des Elektromotors aus Fig. 4 und
Fig. 6
eine perspektivische Ansicht eines Elektromotors mit einem Lüfter.
Embodiments of a device for driving a fastening element into a substrate are explained in more detail below using examples with reference to the drawings. Show it:
1
a side view of a driving device,
2
a side view of a driving device with the housing open,
3
a longitudinal section of an electric motor,
4
a perspective view of an electric motor,
figure 5
a longitudinal section of the electric motor 4 and
6
a perspective view of an electric motor with a fan.

Fig. 1 zeigt eine Eintreibvorrichtung 10 zum Eintreiben eines Befestigungselementes, beispielsweise eines Nagels oder Bolzens, in einen Untergrund in einer Seitenansicht. Die Eintreibvorrichtung 10 weist ein nicht dargestelltes Energieübertragungselement zur Übertragung von Energie auf das Befestigungselement sowie ein Gehäuse 20 auf, in welchem das Energieübertragungselement und eine ebenfalls nicht dargestellte Antriebseinrichtung zur Beförderung des Energieübertragungselementes aufgenommen sind. 1 shows a driving device 10 for driving a fastener, such as a nail or bolt, into a substrate in a side view. The driving-in device 10 has an energy transmission element, not shown, for transmitting energy to the fastening element, and a housing 20, in which the energy transmission element and a drive device, also not shown, for transporting the energy transmission element are accommodated.

Die Eintreibvorrichtung 10 weist ferner einen Griff 30, ein Magazin 40 und eine den Griff 30 mit dem Magazin 40 verbindende Brücke 50 auf. Das Magazin ist nicht abnehmbar. An der Brücke 50 sind ein Gerüsthaken 60 zur Aufhängung der Eintreibvorrichtung 10 an einem Gerüst oder dergleichen und ein als Akku 590 ausgebildeter elektrischer Energiespeicher befestigt. An dem Griff 30 sind ein Abzug 34 sowie ein als Handschalter 35 ausgebildeter Grifffühler angeordnet. Weiterhin weist die Eintreibvorrichtung 10 einen Führungskanal 700 für eine Führung des Befestigungselementes und eine Anpresseinrichtung 750 zur Erkennung eines Abstandes der Eintreibvorrichtung 10 von einem nicht dargestellten Untergrund auf. Ein Ausrichten der Eintreibvorrichtung senkrecht zu einem Untergrund wird durch eine Ausrichthilfe 45 unterstützt.The driving device 10 also has a handle 30 , a magazine 40 and a bridge 50 connecting the handle 30 to the magazine 40 . The magazine is not detachable. A scaffolding hook 60 for suspending the driving-in device 10 on a scaffolding or the like and an electrical energy store designed as a rechargeable battery 590 are fastened to the bridge 50 . A trigger 34 and a grip sensor designed as a manual switch 35 are arranged on the grip 30 . Furthermore, the driving-in device 10 has a guide channel 700 for guiding the fastening element and a pressing device 750 for detecting a distance of the driving-in device 10 from a substrate (not shown). Alignment of the driving-in device perpendicular to a substrate is supported by an alignment aid 45 .

Fig. 2 zeigt die Eintreibvorrichtung 10 mit geöffnetem Gehäuse 20. In dem Gehäuse 20 ist eine Antriebseinrichtung 70 zur Beförderung eines in der Zeichnung verdeckten Energieübertragungselementes aufgenommen. Die Antriebseinrichtung 70 umfasst einen nicht dargestellten Elektromotor zur Umwandlung von elektrischer Energie aus dem Akku 590 in Drehenergie, eine ein Getriebe 400 umfassende Drehmomentübertragungseinrichtung zur Übertragung eines Drehmomentes des Elektromotors auf einen als Spindeltrieb 300 ausgebildeten Bewegungsumwandler, eine einen Rollenzug 260 umfassende Kraftübertragungseinrichtung zur Übertragung einer Kraft von dem Bewegungsumwandler auf einen als Feder 200 ausgebildeten mechanischen Energiespeicher und zur Übertragung einer Kraft von der Feder auf das Energieübertragungselement. 2 shows the driving-in device 10 with the housing 20 open. Drive device 70 comprises an electric motor, not shown, for converting electrical energy from battery 590 into rotational energy, a torque transmission device comprising a gearbox 400 for transmitting a torque of the electric motor to a motion converter embodied as a spindle drive 300, a power transmission device comprising a roller train 260 for transmitting a force from the movement converter to a mechanical energy store designed as a spring 200 and for transmitting a force from the spring to the energy transmission element.

Fig. 3 zeigt einen elektrischen Motor 480 mit einem Motorabtrieb 490 in einem Längsschnitt. Der Motor 480 ist als bürstenloser Gleichstrommotor ausgebildet und weist Motorspulen 495 zum Antreiben des Motorabtriebs 490, welcher einen Permanentmagneten 491 umfasst, auf. Der Motor 480 wird von einem nicht dargestellten Motorhalter gehalten und mittels der Crimpkontakte 506 mit elektrischer Energie versorgt und mittels der Steuerleitung 505 gesteuert. 3 shows an electric motor 480 with a motor output 490 in a longitudinal section. The motor 480 is designed as a brushless DC motor and has motor coils 495 for driving the motor output 490, which includes a permanent magnet 491. The motor 480 is held by a motor holder (not shown) and is supplied with electrical energy by means of the crimp contacts 506 and is controlled by means of the control line 505 .

An dem Motorabtrieb 490 ist ein als Motorritzel 410 ausgebildetes motorseitiges Drehelement durch einen Presssitz drehfest befestigt. Bei nicht dargestellten Ausführungsbeispielen ist das Drehelement stoffschlüssig, insbesondere durch Kleben oder Aufspritzen, oder formschlüssig befestigt. Das Motorritzel 410 wird von dem Motorabtrieb 490 angetrieben und treibt seinerseits eine nicht dargestellte Drehmomentübertragungseinrichtung an. Eine Halteeinrichtung 450 ist einerseits mittels eines Lagers 452 auf dem Motorabtrieb 490 drehbar gelagert und andererseits mittels eines ringförmigen Montageelementes 470 an dem Motorgehäuse drehfest angebunden. Zwischen der Halteeinrichtung 450 und dem Montageelement 470 ist ein ebenfalls ringförmiges Dichtelement 460 angeordnet, welches der Dichtung gegen Staub und dergleichen dient. Zusammen mit der Leitungsdichtung 570 wird das Motorgehäuse 24 gegenüber dem übrigen Gehäuse abgedichtet, wobei der Lüfter 565 durch die Lüftungsschlitze 33 Luft zur Kühlung des Motors 480 ansaugt und die übrige Antriebseinrichtung vor Staub geschützt ist.A rotating element on the motor side, designed as a motor pinion 410, is fastened in a rotationally fixed manner to the motor output 490 by a press fit. In the case of exemplary embodiments that are not shown, the rotary element is fastened in a materially bonded manner, in particular by gluing or spraying on, or in a form-fitting manner. The motor pinion 410 is driven by the motor output 490 and in turn drives a not shown Torque transmission device. A holding device 450 is rotatably mounted on the one hand by means of a bearing 452 on the motor output 490 and on the other hand is connected non-rotatably to the motor housing by means of an annular mounting element 470 . Between the holding device 450 and the mounting element 470 there is also a ring-shaped sealing element 460 which serves to seal against dust and the like. Together with the line seal 570, the motor housing 24 is sealed off from the rest of the housing, with the fan 565 drawing in air through the ventilation slots 33 to cool the motor 480 and the rest of the drive device being protected from dust.

Die Halteeinrichtung 450 weist eine Magnetspule 455 auf, welche bei Bestromung eine Anziehungskraft auf einen oder mehrere Magnetanker 456 ausübt. Die Magnetanker 456 erstrecken sich in als Durchbrüche ausgebildete Ankerausnehmungen 457 des Motorritzels 410 und sind somit drehfest an dem Motorritzel 410 und damit an dem Motorabtrieb 490 angeordnet. Aufgrund der Anziehungskraft werden die Magnetanker 456 gegen die Halteeinrichtung 450 gedrückt, so dass eine Drehbewegung des Motorabtriebs 490 gegenüber dem Motorgehäuse abgebremst oder verhindert wird.The holding device 450 has a magnet coil 455 which, when energized, exerts an attractive force on one or more magnet armatures 456 . The magnet armatures 456 extend into armature recesses 457 embodied as openings in the motor pinion 410 and are thus arranged in a rotationally fixed manner on the motor pinion 410 and thus on the motor output 490 . Due to the force of attraction, the magnet armatures 456 are pressed against the holding device 450, so that a rotational movement of the motor output 490 relative to the motor housing is braked or prevented.

Fig. 4 zeigt ein weiteres Beispiel einer Eintreibvorrichtung 800 mit einem Motor 810 und einer Tragstruktur 820, welche Teil eines Gehäuses der Eintreibvorrichtung 800 ist und den Motor 810 trägt, welcher mittels zweier als Ringelemente ausgebildeter Dämpfelemente 830 an der Tragstruktur 820 gehalten ist. Die Dämpfelemente 830 umspannen jeweils den Motor 810 in einer sich senkrecht zur Eintreibrichtung der Eintreibvorrichtung erstreckenden Ebene. Im Übrigen ist der Motor 810 in allen Richtungen relativ zur Tragstruktur 820 bewegungsentkoppelt. Die Dämpfelemente 830 bestehen aus einem Elastomer und sind kreisringförmig ausgebildet. Sie weisen einen kreisförmigen Querschnitt auf und sind als O-Ringe ausgebildet. 4 shows another example of a driving device 800 with a motor 810 and a support structure 820, which is part of a housing of the driving device 800 and carries the motor 810, which is held on the support structure 820 by means of two damping elements 830 designed as ring elements. The damping elements 830 each span the motor 810 in a plane extending perpendicular to the driving direction of the driving device. Otherwise, the motor 810 is motion-decoupled in all directions relative to the support structure 820 . The damping elements 830 consist of an elastomer and are designed in the shape of a circular ring. They have a circular cross-section and are designed as O-rings.

Fig. 5 zeigt eine Schnittansicht der Anordnung aus Fig. 4. Die Tragstruktur 820 weist Nuten 840 für eine teilweise Aufnahme jeweils eines Dämpfelements 830 auf, wobei jede Nut 840 in Umfangsrichtung des jeweiligen Dämpfelements 830 vollständig umlaufend ausgebildet ist. In analoger Weise weist der Motor 810 zwei Rillen 850 für eine teilweise Aufnahme jeweils eines Dämpfelements 830 auf, wobei jede Rille 850 in Umfangsrichtung des jeweilgen Dämpfelements 830 vollständig umlaufend ausgebildet ist. figure 5 Figure 12 shows a sectional view of the arrangement 4 . The support structure 820 has grooves 840 for partially accommodating a damping element 830 in each case, with each groove 840 being formed completely circumferentially in the circumferential direction of the respective damping element 830 . In an analogous manner, the motor 810 has two grooves 850 for partially accommodating a damping element 830 each, with each groove 850 being designed to run completely around the respective damping element 830 in the circumferential direction.

Fig. 6 zeigt ein weiteres Beispiel einer Eintreibvorrichtung 900 mit einem Motor 910 und einer Tragstruktur 920, welche Teil eines Gehäuses der Eintreibvorrichtung 900 ist und den Motor 910 trägt, welcher mittels zweier als Ringelemente ausgebildeter Dämpfelemente 930 an der Tragstruktur 920 gehalten ist. Die Dämpfelemente 930 umspannen jeweils den Motor 910 in einer sich senkrecht zur Eintreibrichtung der Eintreibvorrichtung erstreckenden Ebene. Im Die Dämpfelemente 830 bestehen aus einem Elastomer und sind kreisringförmig ausgebildet. Sie weisen einen kreisförmigen Querschnitt auf und sind als O-Ringe ausgebildet. 6 shows another example of a driving device 900 with a motor 910 and a support structure 920, which is part of a housing of the driving device 900 and carries the motor 910, which is held on the support structure 920 by means of two damping elements 930 designed as ring elements. The damping elements 930 each span the motor 910 in a plane extending perpendicular to the driving direction of the driving device. The damping elements 830 consist of an elastomer and are designed in the shape of a circular ring. They have a circular cross-section and are designed as O-rings.

Um den Motor 910, der eine Wärmequelle darstellt, zu kühlen, weist die Eintreibvorrichtung 900 einen von der gleichen Energiequelle wie der Motor 910 betriebenen Lüfter 960 auf, welcher mittels eines Lüfterdämpfelements 970 an der Tragstruktur 920 gehalten ist. Bei einem nicht gezeigten Ausführungsbeispiel ist der Lüfter mittels des Lüfterdämpfelements an dem Motor gehalten und somit mittels der Dämpfelemente des Motors zusätzlich gedämpft. Das Lüfterdämpfelement 970 besteht aus einem Elastomer und bildet eine Einhausung des Lüfters 960 und weist einen bevorzugt T-förmigen Vorsprung 980 auf, welcher in einer Aufnahme 990 der Tragstruktur 920 aufgenommen ist. Der Vorsprung 980 greift dabei in einen Hinterschnitt der Aufnahme ein.In order to cool the motor 910, which is a heat source, the driving device 900 has a fan 960 which is operated by the same energy source as the motor 910 and which is held on the support structure 920 by means of a fan damping element 970. In an exemplary embodiment that is not shown, the fan is held on the motor by means of the fan damping element and is therefore additionally damped by means of the damping elements of the motor. The fan damping element 970 consists of an elastomer and forms a housing for the fan 960 and has a preferably T-shaped projection 980 which is accommodated in a receptacle 990 of the support structure 920. The projection 980 engages in an undercut of the receptacle.

Claims (11)

  1. Apparatus (900) for driving a fastening element into an substrate in a driving-in direction, having a heat source, having a fan (960) for cooling the heat source, having a support structure (920), which supports the fan, and having a fan damping element, by means of which the fan is held on the support structure or on the heat source (910), characterized in that the fan has an enclosure, which is formed by the fan damping element (970).
  2. Apparatus according to Claim 1, also comprising a further damping element (930), by means of which the heat source is held on the support structure.
  3. Apparatus according to either of the preceding claims, wherein the fan damping element (970) has at least one protrusion (980), and wherein the support structure or the heat source has a receptacle in which the protrusion is received.
  4. Apparatus according to Claim 3, wherein the receptacle has an undercut in which the protrusion engages.
  5. Apparatus according to one of the preceding claims, wherein the fan damping element and/or the further damping element comprise/comprises an elastic material, in particular an elastomer, in particular PU, EPDM or FKM, and in particular consist/consists thereof.
  6. Apparatus according to one of the preceding claims, also having a housing, wherein the support structure is rigidly connected to the housing (20) or is part of the housing.
  7. Apparatus according to one of the preceding claims, wherein the heat source comprises an in particular electric motor.
  8. Apparatus according to one of the preceding claims, also comprising an energy transmission element that is movable between a starting position and a setting position in order to transmit energy to the fastening element.
  9. Apparatus according to one of the preceding claims, also having a mechanical energy store for storing mechanical energy and an energy transmission device for transmitting energy from an energy source to the mechanical energy store, wherein the energy transmission device has the motor for transmitting the energy from the energy source to the mechanical energy store.
  10. Apparatus according to Claim 9, wherein the mechanical energy store comprises a spring (200), in particular a helical spring.
  11. Apparatus according to either of Claims 9 and 10, wherein the energy source comprises an electric battery (590), which supplies the motor and the fan with electrical energy.
EP18808400.8A 2017-12-21 2018-12-05 Fastener driving device Active EP3727763B1 (en)

Applications Claiming Priority (2)

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EP17209533.3A EP3501752A1 (en) 2017-12-21 2017-12-21 Fastener driving device
PCT/EP2018/083575 WO2019120997A1 (en) 2017-12-21 2018-12-05 Driving-in device

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EP3727763A1 EP3727763A1 (en) 2020-10-28
EP3727763B1 true EP3727763B1 (en) 2023-02-08

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US11498194B2 (en) * 2018-11-27 2022-11-15 Milwaukee Electric Tool Corporation Lifter assembly for a powered fastener driver

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DE102014103854A1 (en) * 2014-03-20 2015-09-24 C. & E. Fein Gmbh Hand tool with a fan unit

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JP5309920B2 (en) * 2008-11-19 2013-10-09 日立工機株式会社 Electric tool
DE102009001371A1 (en) * 2009-03-06 2010-09-09 Hilti Aktiengesellschaft Hand-guided tacker
DE102010030092A1 (en) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft driving-
DE102010030059A1 (en) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Hand-guided tacker
US10717179B2 (en) * 2014-07-28 2020-07-21 Black & Decker Inc. Sound damping for power tools

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DE102014103854A1 (en) * 2014-03-20 2015-09-24 C. & E. Fein Gmbh Hand tool with a fan unit

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EP3501752A1 (en) 2019-06-26
US20210162573A1 (en) 2021-06-03
WO2019120997A1 (en) 2019-06-27

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