EP1864761B1 - Handwerkzeuggerät mit Vibrationsminderungseinrichtung - Google Patents

Handwerkzeuggerät mit Vibrationsminderungseinrichtung Download PDF

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Publication number
EP1864761B1
EP1864761B1 EP07109204A EP07109204A EP1864761B1 EP 1864761 B1 EP1864761 B1 EP 1864761B1 EP 07109204 A EP07109204 A EP 07109204A EP 07109204 A EP07109204 A EP 07109204A EP 1864761 B1 EP1864761 B1 EP 1864761B1
Authority
EP
European Patent Office
Prior art keywords
hand tool
arresting
main housing
arrangement
tool according
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.)
Not-in-force
Application number
EP07109204A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1864761A1 (de
Inventor
Ferdinand Kristen
Roland Meuer
Rüdiger Schulz
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 EP1864761A1 publication Critical patent/EP1864761A1/de
Application granted granted Critical
Publication of EP1864761B1 publication Critical patent/EP1864761B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0015—Tools having a percussion-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/255—Switches
    • B25D2250/261—Means for locking an operative switch on

Definitions

  • the invention relates to a hand tool, with a main housing to which vibrations are generated during operation.
  • the hand tool has a handle housing, which is held with the interposition of a vibration reducing device on the main housing, which dampens the vibrations occurring or the handle housing substantially isolated from the vibrations occurring at the main housing.
  • an actuating arrangement is provided with an adjustable between at least two positions, the main housing side adjusting device and adjustable between at least two positions, handle housing side adjusting device, which is mechanically coupled via a control connection with the main housing-side adjusting device.
  • the actuator has a flexible vibration reducing section between the handle housing and the main housing.
  • the vibrations occurring in operation on the handle housing are greatly reduced with respect to the vibrations on the main housing. This achieves a particularly high level of comfort when holding the device.
  • the adjusting arrangement makes it possible to adjust an adjusting device designed as a functional device on the main or handle housing by means of an adjusting device designed as a handling device, which is held on the other housing part in each case.
  • an electric combination hammer which can be used as a drill or chisel hammer. Further, a latching device is provided on a handle over which a pawl of a motor switch can be latched in chisel operation. In drilling operation, the detent device, which is actuated by a linkage held by a main switch held on the main housing, is displaced to a deactivated position.
  • a disadvantage of the known hand tool device is that the linkage, which acts as a positioning connection, transfers vibrations during operation from the main housing to the handle housing.
  • the linkage causes a relatively large installation effort and high production costs.
  • a combustion-powered hand tool device which has a main housing on which vibrations are generated during operation, a handle housing, which is held with the interposition of a vibration-reducing device on the main housing, and an actuating arrangement.
  • the adjusting arrangement has an adjustable between two positions, the main housing side adjusting device and an adjustable between two positions, handle housing side adjusting device, which is mechanically coupled via a control connection with the main housing-side adjusting device.
  • the actuator connection between the handle housing and the main housing has a Bowden cable as a flexible vibration reduction section.
  • the present invention has for its object to avoid the disadvantages mentioned in a generic hand tool and to minimize additional vibration transmission from the main body to the handle housing via the actuator connection.
  • the object is achieved in that the hand tool device formed by a switchable between a drilling and a chisel function electric combination hammer and the actuator assembly by a functionally engageable locking arrangement over which a pawl of a motor switch can be fixed in one position.
  • a combination hammer can be provided, the switch pawl can be locked in the chisel function, while locking in drilling operation is prevented.
  • the handle housing which forms a main handle of the power tool, at any time substantially completely decoupled from the main body, so that almost no vibrations are transmitted to the main handle of this.
  • the flexible vibration-reducing section is formed by a Bowden cable.
  • a Bowden cable This allows simultaneous flexibility of a transmission of particularly high restoring forces of one of the housing parts of the main body and handle housing to the other.
  • a Bowden cable is particularly inexpensive and can be easily mounted.
  • the handle housing side adjusting device is formed by a locking device of the locking arrangement, which is adjustable between a release position and a locking position in which the pawl on locking means in a switch-on position of the motor switch can be fixed.
  • a locking device of the locking arrangement which is adjustable between a release position and a locking position in which the pawl on locking means in a switch-on position of the motor switch can be fixed.
  • the locking arrangement on a via the actuating connection between an active position and a passive position movable activation member.
  • the locking device has a locking switch, by means of which the locking means in the active position of the activating member can be brought into the locking position.
  • the actuating function of the locking switch relative to the locking means is repealed.
  • the locking in the drilling function can be reliably prevented and merely made possible in the chiseling function.
  • the actual activation is then made by a user either by pressing the locking switch.
  • a quick locking or releasing the switch pawl is possible in the chisel to adapt to the particular circumstances.
  • the activation member is biased in the passive position. As a result, it is ensured at all times that the locking device is prevented during drilling operation even if the adjusting arrangement is damaged, for example when the flexible vibration-reducing section tears.
  • the main housing-side adjusting device is formed by a mode switch for switching between drilling and chisel function, whereby at the same time in the case of Bohr knewes the lock blocked and set in the case of chisel operation enables or activates the setting with the desired operating mode.
  • the fashion switch is coupled to a main housing-side end of the actuating connection, whereby a stable and accurate actuation of the actuating arrangement is ensured.
  • Fig. 1 shows a detail of a hand tool 2 in the form of an electrically operated combi hammer. This is by means of a mode switch 4 between a chisel function with pure impact operation and a drilling function, for hammer drilling or pure drilling, switchable, as shown by a chisel M and a drilling position B.
  • the hand tool 2 has a main housing 6, in which a motor unit 8 and a gear unit 10 are housed. Further, a handle housing 12 is held on the main housing 6 with the interposition of a vibration-reducing device 14, which has, for example spring means not shown. This handle housing 12 forms a handle 16, which can be held by one hand, on the same time a pawl 18 of a motor switch 20 can be operated to take the motor unit 8 and the hand tool 2 in total operation.
  • vibrations occur on the main housing 6.
  • the vibration reduction device 14 a transmission of the vibrations from the main housing 6 to the handle housing 12 is substantially avoided.
  • the mode switch 4 acts as the main housing-side adjusting device of a generally designated 22 actuator assembly between the main housing 6 and the handle housing 12. This also has on the handle housing 12 on a handle housing side adjusting device, which is formed by a locking device 24.
  • the locking device 24 is connected via a control connection 26 with the mode switch 4 and switchable by this between a locking position and a release position.
  • the actuating connection 26 has a slide element 28 which is held displaceably in the main housing 6 and which is coupled via a driver arrangement 30 to the mode switch 4, which has a slide-side slide 32 and a switch-side eccentric cam 34. Furthermore, the actuating connection 26 has a flexible vibration-reducing section 36 in the form of a Bowden cable, which is connected to the slider element 28 at a main housing-side end 38.
  • a handle housing side end 40 of the flexible vibration reduction portion is connected to a first leg 42 of an activating member 44.
  • This first leg 42 is on the one hand strigkbar mounted on the handle housing 12 and at the same time on a Swivel joint 46 connected to a second leg 48 of the activation member 44.
  • This second leg 48 is further connected to an actuating tongue 50, which can be applied to a pivotally mounted in the handle housing 12 locking hook 52.
  • actuator assembly 22 In the in Fig. 1 shown position of acting as a locking arrangement actuator assembly 22 is the locking device 24 through the set on Meisselfunktion M mode switch 4 and via the control link 26, which acts on the first leg 42 with a tensile force in an active position.
  • the actuating tongue 50 In this active position, the actuating tongue 50 is pivotable against the locking hook 52 by displacing a locking switch 54 into a front position (as shown).
  • the actuator assembly 22 is in a locked position, in which the locking hook 52 engages in a locking receptacle 56 of the pawl 18, which is thus held in an on position in which the motor switch 20, the motor unit 8 is activated.
  • the lock switch 54 as shown in FIG Fig. 2 shown, moved to a rear position.
  • the operating tongue 50 is no longer pressed against the locking hook 52, which is now pivoted by a leaf spring 58 out of engagement with the Arretierfact 56.
  • the hand tool 2 can be operated in the chisel function optionally without locking the pawl 18.
  • the mode switch 4 is in the drilling position B according Fig. 3 turned.
  • the slide element 28 is displaced into a new position via the driver arrangement 30, as a result of which the tensile force of the actuating connection 22 acting on the first limb 42 of the activation member 44 is reduced.
  • the first leg 42 which is acted upon by a biasing spring 60, pivoted in a direction away from the pawl 18.
  • the activator 44 takes the in Fig. 3 shown passive position.
  • the actuating tongue 50 is positioned relative to the locking hook 52, that a displacement of the locking switch 54 can not cause engagement of the locking hook 52 with the locking receptacle 56. This ensures that the locking device 24 is in drilling operation in a release position in which no locking of the pawl 18 takes place.
  • the mode switch 4 is again rotated in the chisel position M, via the slider element 28 and the flexible vibration reduction section 36 again a tensile force on the first Leg 42 attacks, the activation member 44 back into the in Fig. 1 shown active position spends, in turn, by moving the locking switch 54 an optional locking position of the locking device 24 can be taken.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)
EP07109204A 2006-06-09 2007-05-30 Handwerkzeuggerät mit Vibrationsminderungseinrichtung Not-in-force EP1864761B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006000287A DE102006000287A1 (de) 2006-06-09 2006-06-09 Handwerkzeuggerät mit Vibrationsminderungseinrichtung

Publications (2)

Publication Number Publication Date
EP1864761A1 EP1864761A1 (de) 2007-12-12
EP1864761B1 true EP1864761B1 (de) 2008-12-10

Family

ID=38512299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07109204A Not-in-force EP1864761B1 (de) 2006-06-09 2007-05-30 Handwerkzeuggerät mit Vibrationsminderungseinrichtung

Country Status (4)

Country Link
US (1) US20080017396A1 (zh)
EP (1) EP1864761B1 (zh)
CN (1) CN101085518B (zh)
DE (2) DE102006000287A1 (zh)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029630A1 (de) * 2006-06-28 2008-01-03 Robert Bosch Gmbh Handwerkzeugmaschine
DE102007000362A1 (de) * 2007-07-02 2009-01-08 Hilti Aktiengesellschaft Vibrierende Handwerkzeugmaschine mit einem Arretierschalter des Motorschalters
JP5180697B2 (ja) * 2008-06-19 2013-04-10 株式会社マキタ 手持式作業工具
US8800835B2 (en) * 2008-07-17 2014-08-12 Stanley Fastening Systems, Lp Fastener driving device with mode selector and trigger interlock
US20110308920A1 (en) * 2008-12-17 2011-12-22 Robert Bosch Gmbh Lock-On Switch System for Hand Drill and Hand Drill having the Same
JP5405864B2 (ja) * 2009-03-23 2014-02-05 株式会社マキタ 打撃工具
JP5502352B2 (ja) * 2009-03-23 2014-05-28 株式会社マキタ 電動工具
DE102010038750A1 (de) * 2010-08-02 2012-02-02 Robert Bosch Gmbh Elektrowerkzeugmaschine mit arretierbarer Schaltwippe
DE102010038753A1 (de) * 2010-08-02 2012-02-02 Robert Bosch Gmbh Antivibrationshandgriff mit auf Zug belasteter Schaltverbindung
US11059156B2 (en) 2015-01-28 2021-07-13 Koki Holdings Co., Ltd. Impact tool
DE102015226440A1 (de) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
DE102016218535A1 (de) * 2016-09-27 2018-03-29 Robert Bosch Gmbh Schaltvorrichtung für eine tragbare Werkzeugmaschine, insbesondere einen Bohr- und/oder Meißelhammer
JP6912224B2 (ja) * 2017-03-03 2021-08-04 株式会社マキタ 作業工具
EP3581337A1 (de) * 2018-06-11 2019-12-18 HILTI Aktiengesellschaft Handwerkzeugmaschine
EP3593951A1 (de) * 2018-07-11 2020-01-15 Hilti Aktiengesellschaft Handwerkzeugmaschine
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool
JP2021122870A (ja) * 2020-02-03 2021-08-30 株式会社マキタ ハンマドリル
DE102020001076A1 (de) * 2020-02-19 2021-08-19 Metabowerke Gmbh Hand-Werkzeugmaschine
US20220176534A1 (en) * 2020-12-07 2022-06-09 Black & Decker Inc. Power tool with multiple modes of operation and ergonomic handgrip
JP2022188996A (ja) * 2021-06-10 2022-12-22 株式会社マキタ 回転打撃工具

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Publication number Priority date Publication date Assignee Title
DE8909508U1 (de) 1989-03-21 1989-09-28 Sachs-Dolmar GmbH, 2000 Hamburg Bedienungseinrichtung für den Brennkraftmaschinenantrieb eines Gerätes, insbesondere einer Motorkettensäge, eines Trennschleifers oder eines Freischneiders
DE3932137C2 (de) * 1989-09-27 1998-07-02 Stihl Maschf Andreas Vorrichtung zur Betätigung einer Bremsvorrichtung zum Stillsetzen eines motorgetriebenen Arbeitswerkzeuges eines Arbeitsgerätes
JPH0825249A (ja) * 1994-07-12 1996-01-30 Makita Corp 振動工具及び防振リング
US5697456A (en) * 1995-04-10 1997-12-16 Milwaukee Electric Tool Corp. Power tool with vibration isolated handle
DE19937767B4 (de) * 1999-08-10 2004-09-09 Hilti Ag Handgeführter elektrischer Kombihammer
DE10034768A1 (de) * 2000-07-18 2002-02-07 Bosch Gmbh Robert Elektrokombihammer
DE10225239A1 (de) * 2002-06-06 2003-12-18 Hilti Ag Modiwahlschalter für kombinierte Elektrohandwerkzeugmaschine
GB2407791A (en) * 2003-11-04 2005-05-11 Black & Decker Inc Vibration reduction apparatus for a power tool
DE102004019776A1 (de) * 2004-04-23 2005-11-17 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer
JP4509662B2 (ja) * 2004-06-16 2010-07-21 株式会社マキタ 電動打撃工具
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DE102005038091A1 (de) * 2005-08-11 2007-02-15 Hilti Ag Handwerkzeuggerät mit Vibrationsminderung

Also Published As

Publication number Publication date
DE102006000287A1 (de) 2007-12-13
CN101085518A (zh) 2007-12-12
DE502007000282D1 (de) 2009-01-22
US20080017396A1 (en) 2008-01-24
EP1864761A1 (de) 2007-12-12
CN101085518B (zh) 2010-12-22

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