EP1944134B1 - Machine-outil manuelle portative - Google Patents

Machine-outil manuelle portative Download PDF

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Publication number
EP1944134B1
EP1944134B1 EP07033581A EP07033581A EP1944134B1 EP 1944134 B1 EP1944134 B1 EP 1944134B1 EP 07033581 A EP07033581 A EP 07033581A EP 07033581 A EP07033581 A EP 07033581A EP 1944134 B1 EP1944134 B1 EP 1944134B1
Authority
EP
European Patent Office
Prior art keywords
housing
handle
machine tool
pressure piece
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.)
Active
Application number
EP07033581A
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German (de)
English (en)
Other versions
EP1944134A1 (fr
Inventor
Thomas Robieu
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.)
Techtronic Industries GmbH
Original Assignee
AEG Electric Tools GmbH
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 AEG Electric Tools GmbH filed Critical AEG Electric Tools GmbH
Publication of EP1944134A1 publication Critical patent/EP1944134A1/fr
Application granted granted Critical
Publication of EP1944134B1 publication Critical patent/EP1944134B1/fr
Active 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
    • 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
    • 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
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Definitions

  • the invention relates to a portable, hand-held machine tool having the features according to the preamble of claim 1.
  • Such a portable hand-held machine tool is from the DE 102 36 135 A1 known.
  • the drill and chisel hammer shown there has a housing and a bow handle.
  • the bow handle is fixed with two legs on the housing.
  • With a first leg of the bow handle is pivotally mounted on the housing, wherein the connection of the second leg with the housing permits a pivoting relative movement between the bow handle and the housing.
  • a compression spring is arranged, which is held under pretension between two pressure pieces.
  • One of the two pressure pieces is applied to a screw dome of the bow handle, while the other pressure piece is screwed fixed to the housing.
  • the bow handle can be pivoted relative to the housing against the biasing force of the compression spring. It is formed an anti-vibration system, which reduces the operational vibration level at the bow handle and thus the user's hand.
  • the DE 103 55 103 A1 discloses a portable, hand-held machine tool with a bow handle, which is pivotally mounted relative to a device housing. Between an upper leg of the bow handle and the housing, a compression spring is held between two pressure pieces. The grip side pressure piece is hooked to the bow handle. When mounting the handle is first with his upper leg to the Inserted latch hook, being inserted for this purpose the locking hook with its hook ends in the lower portions of the openings of a metal plate. During assembly, both the handle and the latching hook and the spring element must be positioned simultaneously, put under tension and locked, which significantly complicates the assembly process.
  • the invention has the object of developing a generic machine tool such that the assembly is simplified without affecting the anti-vibration effect.
  • the handle side, the pressure spring under bias holding pressure piece without a mounted bow handle with the housing via at least one engaging in a receptacle of the housing hook element is positively locked hooked.
  • the hook connection between the pressure piece and the housing is advantageously designed as a bayonet connection. The pressure piece can be used in a simple manner in a twisted state.
  • the abutment facing away from the bow handle pressure piece may be appropriate to fix the abutment facing away from the bow handle pressure piece with the above-described entanglement.
  • that pressure piece is hooked, which is pressed in the assembled state against the second leg of the bow handle, wherein the entangled pressure piece is slidably mounted together with the at least one hook element in an axial direction of the compression spring in the housing.
  • the receptacle for the at least one hook element is advantageously designed as a slot extending in the axial direction of the housing.
  • Engine and gearbox housings can remain untouched.
  • the entanglement of the pressure piece with a slot of the housing makes it possible to first apply the spring preload with the grip side pressure piece.
  • the entanglement holds the pressure piece in place, wherein the bias of the compression spring is maintained.
  • the assembly of the bow handle can be done, in which case the entanglement of the pressure piece is inoperative.
  • the pressure piece can move freely due to the pivotal movement of the bow handle, whereby the desired anti-vibration effect is achieved.
  • the housing has a compression spring and the entangled pressure piece on the inside receiving sleeve, wherein the sleeve is provided with the receptacle for the at least one hook element.
  • the inside arrangement of the axially displaceable pressure piece leads to a compact, highly resilient design, whereby the subsequent assembly of the bow-shaped handle and its connection to the spring arrangement is simplified.
  • the sleeve expediently has at least one additional slot, which is delimited by two axial stops, for receiving a slider designed in particular as a screw dome of the bow-type handle.
  • the receptacle for the hook element is expediently arranged in the axial direction on a side facing away from the bow handle of the slot for the slider.
  • the sleeve exerts a double function on the one hand for guiding the spring element with the associated pressure piece and on the other hand for guiding and limiting the pivoting movement of the bow handle.
  • the arrangement is compact and easy to assemble.
  • Fig. 1 shows a side view of an inventively executed portable, hand-held machine tool using the example of a hammer drill 1. It can also be a percussion drill, a chisel or the like may be provided.
  • the hammer drill 1 has a housing 2, which comprises a motor and gear housing 21 for an electric drive motor, not shown, and a transmission and a lid 22 screwed from above.
  • a chuck 23 is provided for receiving a drill or chisel tool. It is about the electric drive motor and the intermediate gear about a rotational axis 27 rotatably driven. The impact movement takes place in the direction of the axis of rotation 27th
  • the bow handle 3 On the side opposite the chuck 23 side is an approximately C-shaped bow handle 3 with two legs 4, 5 fixed to the housing 2 and carries a switch lever 41 for actuating the electric drive motor.
  • the bow handle 3 comprises two substantially symmetrical half shells 39, 40, of which a half-shell 39 in Fig. 1 and the further half-shell 40 in Fig. 2 is shown.
  • Fig. 2 shows the hammer 1 after Fig. 1 With removed half shell 39 of the bow handle 3.
  • the Bow handle 3 with its first leg 4 on the housing 2, namely on the engine and transmission housing 21 is pivotally mounted.
  • a screw dome 25 for screwing the two half-shells 39, 40 together a pivot axis 24.
  • the connection of the second leg 5 with the housing 2 leaves a pivoting relative movement between the bow handle 3 and the housing 2 in the region of the second leg 5 corresponding to a double arrow 26th to.
  • a pivoting guide of the bow-shaped handle 3 is formed by screw domes 20 of the two half-shells 39, 40, which are provided for screwing the two half-shells 39, 40 together, and which engage in a slot 16 of the housing 2.
  • Two opposite in the longitudinal direction of the elongated hole 16 ends form stops 17, 18 for the screw domes 20, whereby the pivotal movement of the bow handle 3 in the direction of the double arrow 26 is limited.
  • a compression spring 6 is supported under prestress against the screw domes 20, whereby the pivotal movement of the bow handle 3 takes place under the action of the prestressed compressive force of the compression spring 6. During operation of the hammer drill 1, the vibration level at the bow handle 3 is thereby lowered. Moreover, in the Fig. 1 and 2 same features with the same reference numerals.
  • Fig. 3 shows an exploded perspective view of the hammer drill 1 after the Fig. 1 and 2 with the two half-shells 39, 40 of the bow-shaped handle 3 in the disassembled state.
  • the chuck 23 facing away from the end of Housing 2 is formed on the engine and gear housing 21, a joint piece 28 with a bore 29, wherein the bore 29 in the assembled state of the sorteddomen 25 of the two half-shells 39, 40 for forming the pivot axis 24 (FIGS. Fig. 2 ).
  • the compression spring 6 is arranged in an axial direction 12, wherein the axial direction 12 parallel to the axis of rotation 27 of the chuck 23 and at least approximately parallel to the pivoting direction after the double arrow 26 (FIGS. Fig. 2 ) lies.
  • the compression spring 6 designed as a helical spring is held under pretension between two pressure pieces 7, 8.
  • a first pressure piece 8 is not shown in detail and is part of the lid 22.
  • the pressure piece 8 is formed by an inner end of an integrally formed on the lid 22 sleeve 15, wherein the sleeve 15 is provided for receiving the inside of the compression spring 6.
  • the more, related to Fig. 4 closer described pressure piece 7 has at least one elastically resilient hook element 10.
  • the sleeve 15 of the housing 2 has two likewise in the lateral direction opposite seats 9 for the hook elements 10.
  • the two receptacles 9 for the two hook elements 10 are arranged in the axial direction 12 on a side facing away from the bow handle 3 or the chuck 23 side of the two also molded into the sleeve 15 slots 16.
  • Fig. 4 shows an enlarged detail view of the pressure piece 7 after Fig. 3 , which is designed as a plastic injection molding in one piece.
  • the pressure piece 7 comprises a substantially cylindrical base body whose outer contour for a displaceable in the axial direction 12 guide within the sleeve 15 (FIGS. Fig. 3 ) is provided.
  • the opposite on both sides hook elements 10 are formed as spring tongues 11.
  • Depending on an elastically resilient end piece of the spring tongues 11 in the radial direction comprises a radially inwardly deflectable latching hook 34 with a mounting bevel 35 and a blocking surface 36.
  • the mounting bevel 35 points from the bow handle 3 (FIGS. Fig. 3 ), while the blocking surface 36 points to the bow handle 3.
  • the hook connection of the pressure piece 7 with the housing 2, here with the sleeve 15 of the lid 22 is designed as a latching connection or as a bayonet connection.
  • the compression spring 6 is first inserted into the sleeve 15 until it rests against the inner pressure piece 8.
  • the pressure piece 7 is then inserted in its position shown according to an arrow 32 while compressing the compression spring 6 into the sleeve 15.
  • the mounting slopes 35 ( Fig. 4 ) of the spring tongues 11 press under the action of the inner walls of the sleeve 15, the latching hooks 34 resiliently radially inwardly.
  • the latching hooks 34 Upon reaching the intended mounting position, the latching hooks 34 snap due to their previously applied upon insertion spring preload radially outward into the respective receptacle 9 of the sleeve 15 a. The pressure piece 7 is thus hooked while maintaining the spring bias of the compression spring 6 with the sleeve 15 of the housing 2.
  • a bayonet connection of the pressure piece 7 with the housing 2 can be formed with the hook elements 10.
  • the compression spring 6 is first inserted into the sleeve 15 until it rests against the inner pressure piece 8.
  • the compression spring 6 is set under pretension, while the hook elements 10 are guided past the oblong holes 16.
  • an electrical switch 42 can be inserted together with the switch trigger 41 in one of the two half-shells 39, 40, wherein the position after Fig. 2 taking.
  • the screw domes 25 are inserted into the bore 29 and the screw domes 20 into the elongated holes 16, the pressure surfaces 43 (FIG. Fig. 4 ) of the pressure piece 7 are brought to bear against the screw dome 20.
  • Fig. 5 shows an enlarged detail view of the hammer drill 1 after Fig. 2 In the region of the second leg 5 from the bow handle 3.
  • the bow handle 3 is shown in the unloaded position, therefore, an end-side portion 37 of the second leg 5 is not or only slightly into an opening 38 of the housing 2 engages.
  • the supported against the pressure pad 8 compression spring 6 presses the other pressure piece 7 against the screw dome 20 of the bow handle 3 so that it in the axial direction 12 about the pivot axis 24 (FIGS. Fig. 2 ) is pushed around by the housing 2.
  • the screw domes 20 form a slider 19, which corresponds to the double arrow 26 (FIG. Fig. 2 ) is slidably guided in the slot 16.
  • the slot 16 is through the two Limited stops 17, 18.
  • the slider 19 forming screw 20 pressed against the rear, facing away from the housing 2 stop 17.
  • the pivoting movement of the bow-shaped handle 3 is limited to the rear, thus pointing away from the housing 2.
  • the receptacles 9 for the latching hooks 34 of the spring tongues 11 and the hook elements 10 are also formed as extending in the axial direction 12 elongated holes 13 and allow a displacement of the pressure member 7 in the axial direction 12 relative to the housing 2.
  • the latching hooks 34 point in the unloaded position of the bow-shaped handle 3 Fig. 5 in the axial direction 12 a distance to the proximal end of the slot 13, whereby they perform no function in the mounted state.
  • the limiting function for the pivoting movement of the bow-shaped handle 3 is instead exerted by the stops 17, 18 in cooperation with the slider 19.
  • the function of the spring tongues 11 and the hook elements 10 is limited to the fixation of the compression spring 6 and the pressure piece 7 during the assembly or disassembly process, as in connection with Fig. 3 described.
  • Fig. 6 shows the arrangement after Fig. 5 in the loaded condition.
  • the bow-shaped handle 3 By pressing on the bow-shaped handle 3 in the axial direction 12 towards the housing 2, the bow-shaped handle 3 performs a pivotal movement about the pivoting axis 24 (FIG. Fig. 2 ) in such a way that the second leg 5 is immersed with its frontal portion 37 in the opening 38 of the housing 2.
  • the slider 19 in the form of the screw dome 20 in this case has against the unloaded position Fig. 5 a pivoting displacement executed within the slot 16. This pivoting displacement is limited by the system of the slider 19 on the housing 2 facing stop 18.
  • This pivotal movement of the bow-shaped handle 3 takes place with entrainment of the prestressed against the screw domes 20 pressure piece 7 against the biasing force of the compression spring 6.
  • the slot 13 allows a free displacement of the pressure piece 7 including the latching hooks 34 without them strike the associated end of the slot 13 , Rather, a travel limit is also formed in the loading direction of the bow handle 3 by the interaction of the screw dome 20 with the associated stop 18.

Claims (9)

  1. Outil portatif tenu à la main, en particulier marteau perforateur ou burineur (1), avec un boîtier (2) et une poignée en U (3) qui est fixée au boîtier (2) à l'aide de deux branches (4, 5), étant précisé que la poignée (3) est montée pivotante sur le boîtier (2) avec la première branche (4), que la liaison entre la seconde branche (5) et le boîtier (2) autorise un mouvement relatif pivotant entre la poignée (3) et le boîtier (2), et qu'un ressort de compression (6) qui est maintenu entre deux pièces de pression (7, 8) en étant contraint est disposé entre la seconde branche (5) et le boîtier (2),
    caractérisé en ce que la pièce de pression (7) prévue côté poignée, sans poignée (3) montée, est accrochée sur le boîtier (2) par complémentarité de forme par l'intermédiaire d'au moins un élément d'accrochage (10) qui entre dans un logement (9) du boîtier (2).
  2. Outil selon la revendication 1, caractérisé en ce que pour former l'élément d'accrochage (10), il est prévu au moins une languette élastique (11) faisant ressort élastiquement, qui entre dans le logement (9).
  3. Outil selon la revendication 1, caractérisé en ce que pour former l'élément d'accrochage (10), il est prévu deux languettes élastiques (11) faisant ressort élastiquement, qui entrent dans le logement (9).
  4. Outil selon la revendication 1, caractérisé en ce que la liaison d'accrochage entre la pièce de pression (7) et le boîtier (2) est conçue comme une liaison à baïonnette.
  5. Outil selon la revendication 1, caractérisé en ce que la pièce de pression (7) accrochée est pressée, à l'état monté, contre la seconde branche (5) de la poignée en U (3), en position montée, étant précisé que ladite pièce de pression (7) accrochée est montée dans le boîtier (2) pour pouvoir coulisser avec l'élément d'accrochage (10) dans un sens axial (12) du ressort de compression (6).
  6. Outil selon la revendication 5, caractérisé en ce que le logement (9) pour l'élément d'accrochage (10) est conçu comme un trou oblong (13) du boîtier (2), qui s'étend dans le sens axial (12).
  7. Outil selon la revendication 5, caractérisé en ce que le boîtier (2) présente un manchon (15) qui reçoit côté intérieur le ressort de compression (6) et la pièce de pression (7) accrochée, le manchon (15) étant pourvu du logement (9) pour le ou les éléments d'accrochage (10).
  8. Outil selon la revendication 7, caractérisé en ce que le manchon (15) présente au moins un autre trou oblong (16) qui est délimité par deux butées axiales (17, 18) et qui est destiné à recevoir un coulisseau (19) de la poignée en U (3) conçu comme un couvre-vis (20).
  9. Outil selon la revendication 8, caractérisé en ce que le logement (9) pour l'élément d'accrochage (10) est disposé sur un côté du trou oblong (16) pour le coulisseau (19) qui est opposé à la poignée en U (3), dans le sens axial (12).
EP07033581A 2007-01-10 2007-12-14 Machine-outil manuelle portative Active EP1944134B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007001591A DE102007001591A1 (de) 2007-01-10 2007-01-10 Tragbare, handgeführte Werkzeugmaschine

Publications (2)

Publication Number Publication Date
EP1944134A1 EP1944134A1 (fr) 2008-07-16
EP1944134B1 true EP1944134B1 (fr) 2010-03-31

Family

ID=39271332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07033581A Active EP1944134B1 (fr) 2007-01-10 2007-12-14 Machine-outil manuelle portative

Country Status (4)

Country Link
US (1) US7591325B2 (fr)
EP (1) EP1944134B1 (fr)
CN (1) CN101219538B (fr)
DE (2) DE102007001591A1 (fr)

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US8714280B2 (en) * 2007-02-07 2014-05-06 Robert Bosch Gmbh Vibration dampening for a power tool
GB0804963D0 (en) * 2008-03-18 2008-04-16 Black & Decker Inc Hammer
GB0804964D0 (en) * 2008-03-18 2008-04-16 Black & Decker Inc Hammer
EP2181810A1 (fr) 2008-10-30 2010-05-05 AEG Electric Tools GmbH Outil électrique à vibrations amorties
DE102009002589A1 (de) * 2009-04-23 2010-10-28 Hilti Aktiengesellschaft Handwerkzeugmaschine
JP5502458B2 (ja) * 2009-12-25 2014-05-28 株式会社マキタ 打撃工具
DE102010014774A1 (de) * 2010-04-13 2011-10-13 Wacker Neuson Se Motorhammer mit abgefedertem Griffsystem
DE102010038750A1 (de) * 2010-08-02 2012-02-02 Robert Bosch Gmbh Elektrowerkzeugmaschine mit arretierbarer Schaltwippe
GB2482523A (en) * 2010-08-05 2012-02-08 Black & Decker Inc Hammer drill comprising rear handle with mounting assembly allowing rotation and linear movement
US20120048580A1 (en) * 2010-09-01 2012-03-01 Hilti Aktiengesellschaft Power tool
GB201112833D0 (en) * 2011-07-26 2011-09-07 Black & Decker Inc A hammer drill
DE102011082093A1 (de) * 2011-09-02 2013-03-07 Robert Bosch Gmbh Handgriffvorrichtung für eine Handwerkzeugmaschine
DE102011089719A1 (de) * 2011-12-23 2013-06-27 Robert Bosch Gmbh Elektrisch betreibbare Werkzeugmaschine
JP6070945B2 (ja) * 2013-05-28 2017-02-01 日立工機株式会社 携帯型作業機
JP6096593B2 (ja) * 2013-05-29 2017-03-15 株式会社マキタ 往復動式作業工具
EP2898992B1 (fr) * 2014-01-23 2016-05-04 Black & Decker Inc. Outil électrique avec poignée arrière, méthode d'assemblage d'une partie d'une poignée pour un outil électrique et méthode de démontage d'une partie d'une poignée pour un outil électrique
EP2898994A1 (fr) 2014-01-23 2015-07-29 Black & Decker Inc. Outil électrique avec une poignée arrière
EP2898993B1 (fr) 2014-01-23 2019-01-30 Black & Decker Inc. Outil electrique
EP2898991B1 (fr) 2014-01-23 2018-12-26 Black & Decker Inc. Poignée arrière
JP6620434B2 (ja) * 2015-06-12 2019-12-18 マックス株式会社 打撃工具
CN110520251B (zh) * 2017-03-29 2022-09-20 日东工器株式会社 动力工具
JP7080606B2 (ja) * 2017-08-29 2022-06-06 株式会社マキタ 作業工具
JP2022119301A (ja) * 2021-02-04 2022-08-17 株式会社マキタ 打撃工具
DE102021214607A1 (de) 2021-12-17 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einem Faltenbalg

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Also Published As

Publication number Publication date
CN101219538A (zh) 2008-07-16
US20080210447A1 (en) 2008-09-04
DE502007003295D1 (de) 2010-05-12
EP1944134A1 (fr) 2008-07-16
CN101219538B (zh) 2011-09-28
DE102007001591A1 (de) 2008-07-17
US7591325B2 (en) 2009-09-22

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