EP1075905B1 - Marteau electrique à main - Google Patents

Marteau electrique à main Download PDF

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Publication number
EP1075905B1
EP1075905B1 EP00810525A EP00810525A EP1075905B1 EP 1075905 B1 EP1075905 B1 EP 1075905B1 EP 00810525 A EP00810525 A EP 00810525A EP 00810525 A EP00810525 A EP 00810525A EP 1075905 B1 EP1075905 B1 EP 1075905B1
Authority
EP
European Patent Office
Prior art keywords
switching
locking
actuating element
switch
pusher
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.)
Expired - Lifetime
Application number
EP00810525A
Other languages
German (de)
English (en)
Other versions
EP1075905A3 (fr
EP1075905A2 (fr
Inventor
Erwin Manschitz
Helmut Burger
Josef Anzinger
Manfred Ege
Mathias Doberenz
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 EP1075905A2 publication Critical patent/EP1075905A2/fr
Publication of EP1075905A3 publication Critical patent/EP1075905A3/fr
Application granted granted Critical
Publication of EP1075905B1 publication Critical patent/EP1075905B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • 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-held electric combination hammer for user switchable, optional use as a drill or chisel, with an actuated in the housing handle against a biasing force actuatable actuator for an electrical ON / OFF switch, a switching device for switching from drilling to chisel operation and vice versa, as well as with an activatable by the switching device locking device for the actuating element in its ON-switching position when selecting the chisel operation.
  • Rotary hammers of this type generally have an actuating element articulated on one side in the housing handle for an electrical ON / OFF switch which frequently serves as an adjusting element, for example for a potentiometer, for the steplessly variable change of the engine speed or is coupled to such an actuating element is. If the device user presses the actuating element lying on the inside of the device handle, the motor drive of the hammer drill is switched ON and OFF again when it is released.
  • the pawl so the actuator for the ON / OFF switch at chisel operation in the ON-shift position can forcibly fix, while rotated by 180 ° switch button, ie drilling operation, the cam-operated pivot lever from the path of the holding element is pushed out on the pawl, so that a locking of the pawl by the user is no longer possible.
  • the invention is therefore an object of the invention to improve combined drill / chisel hammers so that a locking of the switch operating element excluded during drilling operation, but with chisel operation optional and with high long-term functionality is possible.
  • the invention is in a hand-held electric combination hammer of the type mentioned inventively by a locking switch, which causes the locking device for fixing the actuating element in the ON-switching position and in a different switching position ineffective switches in the switching position when selecting the chisel operation, in which the actuating element when released by the user under the effect a biasing force in the OFF-switching position springs back.
  • Fig. 1 shows the composite of essentially two parts housing a hand-held combi hammer.
  • One part forms the housing shell 1 and the other the rear-side handle shell, referred to as handle 2 for short.
  • handle 2 On the left side of the housing shell 1, an opening for receiving and rotatable mounting of a rotatable by 180 ° switch 3 for selecting the drilling operation on the one hand and the chisel operation on the other hand provided.
  • a locking device 15 which can be moved back and forth transversely to the longitudinal axis of the device is provided in the rear part above an actuating element 17 for an ON / OFF switch (not shown).
  • Fig. 2 illustrates the perspective view of the switching device according to the invention with locking possibility for the switch actuator 17 at the choice of chisel operation.
  • an eccentric 4 is provided, which upon rotation of the switch 3 for selecting the switch position shown in Fig. 2 and in Figs. 4A, 4B "chisel" a shift rod 5 relative to the longitudinal axis of the Kombihammers against the force of a pair of springs 13a, 13b to the rear, ie in the direction of the actuator 17, shifts.
  • the switching rod 5 has on the upper side an integrally formed guide plate 8 and laterally downwardly standing arms 6, on the underside of which a likewise with the shift rod 5 longitudinally displaceable magnetic holder 7 is formed.
  • the shift rod 5 with guide plate 8, 6 arms and magnetic holder 7 is preferably made as a one-piece injection molded from synthetic resin component.
  • the guide plate 8 of the shift rod 5 acts on a frame-like slide 9, which at its the guide plate 8 facing cross member has a dome-shaped or as a half-round web protruding molding 11 in a V-shaped vertical groove 10 engages the slider 9 facing the end of the guide plate 8.
  • the slider 9 is thus pivotable about a fixed by the shape of the groove 10 and molding 11 pivot point perpendicular to the vertical axis of the combihammer.
  • the pivot angle is a few degrees and is usually between 1 ° and 6 °; it is in a preferred embodiment of the invention 2.7 ° for reasons explained in more detail below.
  • the pivoting angle for the slide 9 is limited by projections 20 formed on the underside which delimit the angular range of the pivoting angle of the slide 9 in both pivoting directions by abutment against the guide plate 8 rounded at the front.
  • the two the slider 9 and the shift rod 5 in the direction of the eccentric 4 under bias holding compression springs 13 a, 13 b are supported against a detent plate 14 which also under the action of the springs 13 a , 13b exerts a certain pressure on the transverse to the longitudinal axis and the vertical axis of the combihammer displaceable locking switch 15 and limited by stop pin 16, the switching path of the locking switch 15 in one or the opposite direction of switching.
  • the stop pins 16 act against two upwardly projecting side walls of a sweeping under the locking switch 15 extension 19 on the actuator 17th
  • the pivotable slide 9, hereinafter also referred to as a pivoting slide, has a at the pivot point 12 opposite web on the underside, preferably integrally formed cam, pin or hook 21 (see Fig. 3A, 4A), which together with and through the slider 9 to the pivot point 12 is pivotable perpendicular to the vertical and longitudinal axis of the combination hammer.
  • This cam, pin or hook, hereinafter referred to only as cam 21 is thus positioned within the vertical side walls of the extension 19.
  • This cam 21 is in drilling operation, ie.
  • the joint formed by the Aüsformung 11 and the groove 10 may also be provided to make the arrangement of slide 9 and guide plate 8 in itself so flexible that the required in terms of the necessary displacement for the cam 21 low right / left pivoting of the Slider 9 is guaranteed.
  • the cam 21 may also be made flexible by selection of the material and / or by resilient articulation relative to the slide, so that it easily passes into the area of action of the Arretieransatzes 22 in any case.
  • the magnetic holder 7 integrally connected to the switching rod 5 via the arms 6 serves to hold and guide a switching magnet used at its free end (FIG. 2), in particular permanent magnets or another element suitable for switching the device drive electronics from a drilling operation to a chisel operation, for example one optical or electromagnetic switching element, which triggers a switching function by relative displacement of two functionally cooperating components.
  • a switching magnet used at its free end in particular permanent magnets or another element suitable for switching the device drive electronics from a drilling operation to a chisel operation, for example one optical or electromagnetic switching element, which triggers a switching function by relative displacement of two functionally cooperating components.
  • a magnetic switch held by the magnet holder 7, in the longitudinal axis of the combihammer relatively displaceable magnet usually with a Hall sensor (not shown) cooperate to switch the drive electronics of chiseling on Schlagbohr memori and vice versa.
  • a switchover and locking device ensuring stable and long service lives, which is well suited for the "rough" use of combi hammers, is provided which, when the drilling operation is selected, ensures immediate device shutdown upon release of the switch operating element, while selecting the chiseling mode depending on the selectable before or during operation position of the locking switch 15 a continuous operation of the electric bit when releasing the actuator is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)
  • Sawing (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Radiation-Therapy Devices (AREA)
  • Percussion Or Vibration Massage (AREA)

Claims (9)

  1. Perforateur-burineur électrique à main pour une utilisation, commutable au gré de l'utilisateur, comme marteau perforateur ou comme marteau burineur, comprenant, pour un interrupteur électrique de marche/arrêt, un élément d'actionnement (17) logé dans la poignée de carter (2) et actionnable à l'encontre d'une force de précontrainte, un dispositif de commutation (3, 4) pour la commutation du mode perforation au mode burinage et vice versa, ainsi qu'un dispositif de blocage (5-22) activable par le dispositif de commutation et destiné à l'élément d'actionnement (17) dans sa position de commutation de marche en cas de sélection du mode burinage, caractérisé par un commutateur de blocage (15) qui, en cas de sélection du mode burinage, sert, dans une position de commutation, à immobiliser l'élément d'actionnement (17) dans sa position de commutation de marche à l'aide du dispositif de blocage et, dans une autre position de commutation où l'élément d'actionnement (17) libéré par l'utilisateur revient en position de commutation d'arrêt sous l'action de la force de précontrainte, neutralise le dispositif de blocage.
  2. Perforateur-burineur selon la revendication 1, caractérisé en ce que le dispositif de blocage comprend une tige de commutation (5) qui est actionnable par le dispositif de commutation (3, 4) et qui agit sur un poussoir (9), lequel est articulé à pivotement, est déplaçable par rapport à la poignée de carter (2) en cas de déplacement longitudinal de la tige de commutation (5) et est muni, sur un côté situé à l'opposé de la tige de commutation (5), d'un élément de blocage (21) qui, en cas d'actionnement du commutateur de blocage (15) dans la position « mode burinage » du dispositif de commutation (3, 4), se positionne, par pivotement du poussoir (9), dans la course de déplacement d'une butée de blocage (22) disposée sur l'élément d'actionnement à précontrainte élastique (17) de l'interrupteur de marche/arrêt et, dans cette position de commutation, empêche l'élément d'actionnement (17) de revenir en position de commutation d'arrêt.
  3. Perforateur-burineur selon la revendication 2, caractérisé en ce qu'entre la tige de commutation (5) et le poussoir (9) est disposée une articulation (10, 11, 12).
  4. Perforateur-burineur selon la revendication 2, caractérisé en ce que l'élément d'arrêt (21) est conformé en ergot, plot ou crochet, lequel est relié au poussoir (9) et, lorsque le mode burinage est sélectionné et que le commutateur de blocage (15) est placé sur « immobilisation de l'élément d'actionnement » (17), se positionne dans la course de rappel de la butée de blocage (22) ménagée sur l'élément d'actionnement (17).
  5. Perforateur-burineur selon la revendication 3 ou 4, caractérisé par une plaque de crantage (14) qui est associée au commutateur de blocage (15) et qui limite à l'une des deux positions de commutation le déplacement en va-et-vient du commutateur de blocage (15) actionnable par deux côtés.
  6. Perforateur-burineur selon la revendication 4, caractérisé en ce que sur le commutateur (3, 4) du mode perforation au mode burinage est disposée une came excentrique (4) qui, en cas de sélection du mode burinage, déplace le poussoir (9) par l'intermédiaire de la tige de commutation (5) par rapport au carter d'appareil (1, 2) en le rapprochant de l'élément d'actionnement (17) à l'encontre de la force de rappel d'un ressort (13a, 13b) agissant sur le poussoir (9).
  7. Perforateur-burineur selon la revendication 6, caractérisé en ce que la force de rappel agissant sur le poussoir (9) est exercée par deux ressorts de compression (13a, 13b) disposés parallèlement et dans le même plan d'action.
  8. Perforateur-burineur selon la revendication 7 en association avec la revendication 5, caractérisé en ce que les deux ressorts de compression (13a, 13b) agissent sur une surface du poussoir (9) orientée à l'opposé du point de rotation (12) du poussoir (9) et prennent appui sur la plaque de crantage (14) du commutateur de blocage (15).
  9. Perforateur-burineur selon une des revendications précédentes, caractérisé en ce qu'à la tige de commutation (5) est relié un moyen de retenue magnétique (7) qui est guidé à l'intérieur du carter d'appareil (1, 2) et qui, en fonction de la position de commutation du commutateur (3, 4), fournit un signal de commutation logique OUI/NON à l'électronique de commande du perforateur-burineur.
EP00810525A 1999-08-10 2000-06-16 Marteau electrique à main Expired - Lifetime EP1075905B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19937767A DE19937767B4 (de) 1999-08-10 1999-08-10 Handgeführter elektrischer Kombihammer
DE19937767 1999-08-10

Publications (3)

Publication Number Publication Date
EP1075905A2 EP1075905A2 (fr) 2001-02-14
EP1075905A3 EP1075905A3 (fr) 2001-11-21
EP1075905B1 true EP1075905B1 (fr) 2007-10-10

Family

ID=7917873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00810525A Expired - Lifetime EP1075905B1 (fr) 1999-08-10 2000-06-16 Marteau electrique à main

Country Status (8)

Country Link
US (2) US6550545B1 (fr)
EP (1) EP1075905B1 (fr)
JP (1) JP4729159B2 (fr)
KR (1) KR20010049832A (fr)
CN (1) CN1156355C (fr)
AT (1) ATE375229T1 (fr)
DE (2) DE19937767B4 (fr)
ES (1) ES2292421T3 (fr)

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CN108022771B (zh) * 2017-12-19 2023-06-09 高斯(杭州)智能科技有限公司 一种磁力开关和机械式旋转手柄二合一装置
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Also Published As

Publication number Publication date
KR20010049832A (ko) 2001-06-15
ES2292421T3 (es) 2008-03-16
JP4729159B2 (ja) 2011-07-20
US6550545B1 (en) 2003-04-22
DE19937767A1 (de) 2001-02-22
EP1075905A3 (fr) 2001-11-21
CN1283537A (zh) 2001-02-14
EP1075905A2 (fr) 2001-02-14
ATE375229T1 (de) 2007-10-15
US7044234B2 (en) 2006-05-16
JP2001062756A (ja) 2001-03-13
US20030121678A1 (en) 2003-07-03
DE50014702D1 (de) 2007-11-22
CN1156355C (zh) 2004-07-07
DE19937767B4 (de) 2004-09-09

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