EP3727763B1 - Dispositif d'enfoncement - Google Patents

Dispositif d'enfoncement 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
Authority
EP
European Patent Office
Prior art keywords
energy
fan
motor
support structure
damping 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.)
Active
Application number
EP18808400.8A
Other languages
German (de)
English (en)
Other versions
EP3727763A1 (fr
Inventor
Iwan Wolf
Dominik Schmidt
Mario Grazioli
Kurt Bauernfeind
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 EP3727763A1 publication Critical patent/EP3727763A1/fr
Application granted granted Critical
Publication of EP3727763B1 publication Critical patent/EP3727763B1/fr
Active legal-status Critical Current
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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
    • B25C1/06—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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)

Claims (11)

  1. Dispositif (900) destiné à enfoncer un élément de fixation dans un substrat dans une direction d'enfoncement, ledit dispositif comprenant une source de chaleur, un ventilateur (960) destiné à refroidir la source de chaleur, une structure de support (920) qui supporte le ventilateur, et un élément d'amortissement de ventilateur au moyen duquel le ventilateur est maintenu sur la structure de support ou sur la source de chaleur (910),
    caractérisé en ce que le ventilateur comporte une enceinte qui est formée par l'élément d'amortissement de ventilateur (970).
  2. Dispositif selon la revendication 1, comprenant en outre un autre élément d'amortissement (930) au moyen duquel la source de chaleur est maintenue sur la structure de support.
  3. Dispositif selon l'une des revendications précédentes, l'élément d'amortissement de ventilateur (970) comportant au moins une saillie (980) et la structure de support ou la source de chaleur comportant un réceptacle dans lequel est reçue la saillie.
  4. Dispositif selon la revendication 3, caractérisé en ce que le réceptacle comporte une contre-dépouille dans laquelle s'engage la saillie.
  5. Dispositif selon l'une des revendications précédentes, l'élément d'amortissement de ventilateur et/ou l'autre élément d'amortissement comprenant un matériau élastique, notamment un élastomère, notamment du PU, de l'EPDM ou du FKM, et étant notamment constitués de celui-ci.
  6. Dispositif selon l'une des revendications précédentes, comportant en outre un boîtier, la structure de support étant reliée rigidement au boîtier (20) ou faisant partie du boîtier.
  7. Dispositif selon l'une des revendications précédentes, la source de chaleur comprenant notamment un moteur électrique.
  8. Dispositif selon l'une des revendications précédentes, comprenant en outre un élément de transmission d'énergie qui est mobile entre une position initiale et une position de réglage et qui est destiné à transmettre de l'énergie à l'élément de fixation.
  9. Dispositif selon l'une des revendications précédentes, comportant en outre un accumulateur d'énergie mécanique destiné à emmagasiner de l'énergie mécanique et une unité de transmission d'énergie destinée à transmettre de l'énergie d'une source d'énergie à l'accumulateur d'énergie mécanique, l'unité de transmission d'énergie comportant le moteur pour transmettre l'énergie de la source d'énergie à l'accumulateur d'énergie mécanique.
  10. Dispositif selon la revendication 9, l'accumulateur d'énergie mécanique comprenant un ressort (200), notamment un ressort hélicoïdal.
  11. Dispositif selon l'une des revendications 9 et 10, la source d'énergie comprenant une batterie électrique (590) qui alimente le moteur et le ventilateur en énergie électrique.
EP18808400.8A 2017-12-21 2018-12-05 Dispositif d'enfoncement Active EP3727763B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17209533.3A EP3501752A1 (fr) 2017-12-21 2017-12-21 Dispositif d'enfoncement
PCT/EP2018/083575 WO2019120997A1 (fr) 2017-12-21 2018-12-05 Dispositif d'enfoncement

Publications (2)

Publication Number Publication Date
EP3727763A1 EP3727763A1 (fr) 2020-10-28
EP3727763B1 true EP3727763B1 (fr) 2023-02-08

Family

ID=60781867

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17209533.3A Withdrawn EP3501752A1 (fr) 2017-12-21 2017-12-21 Dispositif d'enfoncement
EP18808400.8A Active EP3727763B1 (fr) 2017-12-21 2018-12-05 Dispositif d'enfoncement

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17209533.3A Withdrawn EP3501752A1 (fr) 2017-12-21 2017-12-21 Dispositif d'enfoncement

Country Status (3)

Country Link
US (1) US20210162573A1 (fr)
EP (2) EP3501752A1 (fr)
WO (1) WO2019120997A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020112867A1 (fr) * 2018-11-27 2020-06-04 Milwaukee Electric Tool Corporation Ensemble dispositif de levage pour un dispositif d'entraînement d'élément de fixation motorisé

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014103854A1 (de) * 2014-03-20 2015-09-24 C. & E. Fein Gmbh Handwerkzeug mit einer Lüftereinheit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5309920B2 (ja) * 2008-11-19 2013-10-09 日立工機株式会社 電動工具
DE102009001371A1 (de) * 2009-03-06 2010-09-09 Hilti Aktiengesellschaft Handgeführtes Eintreibgerät
DE102010030092A1 (de) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Eintreibvorrichtung
DE102010030059A1 (de) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Handgeführtes Eintreibgerät
US10717179B2 (en) * 2014-07-28 2020-07-21 Black & Decker Inc. Sound damping for power tools

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014103854A1 (de) * 2014-03-20 2015-09-24 C. & E. Fein Gmbh Handwerkzeug mit einer Lüftereinheit

Also Published As

Publication number Publication date
WO2019120997A1 (fr) 2019-06-27
EP3501752A1 (fr) 2019-06-26
EP3727763A1 (fr) 2020-10-28
US20210162573A1 (en) 2021-06-03

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