EP0445636A1 - Marteau actionné par électricité - Google Patents

Marteau actionné par électricité Download PDF

Info

Publication number
EP0445636A1
EP0445636A1 EP19910102887 EP91102887A EP0445636A1 EP 0445636 A1 EP0445636 A1 EP 0445636A1 EP 19910102887 EP19910102887 EP 19910102887 EP 91102887 A EP91102887 A EP 91102887A EP 0445636 A1 EP0445636 A1 EP 0445636A1
Authority
EP
European Patent Office
Prior art keywords
handle
pawl
tool according
hand tool
housing
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.)
Granted
Application number
EP19910102887
Other languages
German (de)
English (en)
Other versions
EP0445636B1 (fr
Inventor
Ulrich Dipl.-Ing. Mütschele
Karl Dr. Ing. Wanner
Johann Kaltenecker
Gerhard Meixner
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0445636A1 publication Critical patent/EP0445636A1/fr
Application granted granted Critical
Publication of EP0445636B1 publication Critical patent/EP0445636B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/04—Cases; Covers
    • H01H21/10—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch
    • 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

Definitions

  • the invention relates to an electrically operated hand tool according to the preamble of claim 1.
  • a rotary hammer which has a closed handle and a switch arranged therein with a handle having. This means that the electrical lines from the switch to the motor must be passed through the handle. The power cord is also inserted into the handle.
  • This widespread design requires a lot of installation work for the cabling.
  • the hammer falls and is hit hard, there is a risk of damaging the sensitive grip area and subsequently exposing live cables. This can pose a danger to the operator.
  • the handheld power tool according to the invention with the characterizing features of claim 1 has the advantage that the assembly effort is considerably reduced, the electrical lines are better protected and the handle can be ergonomically optimized.
  • the area beyond the handle openings of the handle is well protected when the hammer is struck hard on the handle.
  • a location that is easy to manufacture and assemble is preferably selected for the switch, in particular on the outside of the housing.
  • the pawl and the means for power transmission consist of a coherent piece and are articulated together. It is also advantageous that no additional parts such as bolts etc. are used for the rotary bearing of the pawl. This makes assembly considerably easier.
  • Another advantage is a frame for the pawl that can be inserted into a groove of the handle. In this way, the handle can be mounted without tools with two handles and only needs to be screwed onto the hammer housing. Also advantageous is the arrangement of the pawl in the handle part of the handle and the laying of the linkage for power transmission in a web of the handle; this means that the familiar, convenient location of the pawl is retained.
  • inexpensive vibration damping can be achieved in that the handle has a rigid frame which is coated with an elastic material.
  • Figure 1 shows a hammer in partial section
  • Figure 2 shows a cross section along line II-II in Figure 1.
  • a hammer drill 1 has a housing 2 made of plastic, which has a cylindrical housing part in which a motor 3 is housed. Furthermore, a striking mechanism 4, which is only indicated in the drawing, is contained in the housing 2 perpendicular to the motor 3. In an extension of the striking mechanism 4, a tool holder 5 with a drilling tool 6 is arranged in a manner known per se. At the end of the hammer opposite the tool holder, a handle 7 is fastened to the housing 2 with screws 8.
  • the handle 7 has the shape of a spade handle and consists of a frame 9 made of plastic, which has a substantially U-shaped cross section (see FIG. 2).
  • the handle 7 has webs 10 and a central web 11.
  • the handle 7 has in its grip part 12 gripped by the hand of the operator and in the upper web 10 and the central web 11 a circumferential central groove 13 which faces the housing 2.
  • the scaffold 9 is provided with an easily accessible elastic sheath 14, e.g. B. enclosed a foam material.
  • the whole handle 7 consists of an undivided solid part.
  • the webs 10, 11 form an upper 15 and a lower handle opening 16 for holding with both hands, so that a so-called double spade handle is created.
  • the handle openings 15, 16 are closed by a wall 17 facing the housing 2.
  • a closed frame 18 is inserted, which can be made of plastic or sheet metal.
  • the frame In the area of the grip part 12, the frame consists of 2 parallel tabs 19 and 20 which rest in the walls of the groove 13.
  • the two tabs 19, 20 each have a bore 21, 22 on the opposite side.
  • the tabs 19, 20 At the ends facing the handle part 12, the tabs 19, 20 each have an insertion bevel 23, 24 on their inner side opposite each other.
  • the switching pawl 26 has two opposite pins 27, 28 which engage in the bores 21, 22 and thus form a pivot bearing for the switching pawl designed as a two-armed lever.
  • a manually operable actuating part 29 is arranged above the pins 27, 28.
  • a lever 30 is formed with a pan 31 at the end.
  • a resilient connecting element 32 runs parallel to the lever and is integrally connected to a linkage 34.
  • the linkage 34 runs in the central web 11 and has a contact piece 35 which bears against the pan 31.
  • the front end 36 of the linkage 34 is connected to a switch 37 for switching the hammer drill 1 on and off.
  • the linkage 34 and the contact piece 35 together with the socket 31 form means for transmitting the actuating force exerted on the pawl 26 to the switch 37
  • This is accommodated outside the handle 7 in or on the housing 2 of the rotary hammer, advantageously in particular in the space between the handle 7 and the housing 2.
  • the switch 37 can also be attached to the wall 17 of the handle 7 facing the housing 2.
  • the switch 37 is designed as a non-latching pressure switch and is connected to a connecting cable 38 inserted into the housing 2.
  • the pawl and the linkage 34 firmly connected to it are first pressed in in the direction of arrow A, that is to say from the outside, between the tabs 19, 20 of the frame 18.
  • the pins 27, 28 slide over the insertion bevel 23, 24 until they snap into the bores 21, 22.
  • the frame 18 is inserted with the mounted pawl 26 in the direction of arrow B into the groove 13 of the handle 7.
  • the frame 18 closes the groove 13 in the connecting webs 10, 11.
  • the actuating part 29 is inserted into the groove 13.
  • the completely pre-assembled handle 7 is now attached to the housing 2 the screws 8 screwed on.
  • the linkage 34 comes to lie exactly in front of the switch 37, so that the switch can be operated correctly.
  • the invention is not limited to the exemplary embodiment described.
  • the pawl can also be pushed in longitudinally displaceably instead of rotatably with longitudinal guides in the frame arranged in the handle.
  • the invention is also applicable to other power tools such as drills or screwdrivers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP91102887A 1990-03-03 1991-02-28 Marteau actionné par électricité Expired - Lifetime EP0445636B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4006721A DE4006721A1 (de) 1990-03-03 1990-03-03 Elektrisch betriebener hammer
DE4006721 1990-03-03

Publications (2)

Publication Number Publication Date
EP0445636A1 true EP0445636A1 (fr) 1991-09-11
EP0445636B1 EP0445636B1 (fr) 1995-01-18

Family

ID=6401360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91102887A Expired - Lifetime EP0445636B1 (fr) 1990-03-03 1991-02-28 Marteau actionné par électricité

Country Status (2)

Country Link
EP (1) EP0445636B1 (fr)
DE (2) DE4006721A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1585154A1 (fr) * 2004-04-02 2005-10-12 BLACK & DECKER INC. Configuration d'un interrupteur de déclenchement pour un outil électrique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB142922A (en) * 1919-02-12 1920-05-12 Alexander George Slade Improvements in or relating to percussive pneumatic hand tools
DE2839545A1 (de) * 1978-09-12 1980-03-20 Maco Meudon Sa Vorrichtung zum steuern der pressluftzufuhr eines schlagarbeitsgeraetes
EP0028029A1 (fr) * 1979-10-29 1981-05-06 Black & Decker Inc. Outil électrique portable
DE3404962A1 (de) * 1984-02-11 1985-08-14 Robert Bosch Gmbh, 7000 Stuttgart Haltegriff fuer bohrmaschinen und/oder bohrhaemmer
DE3610682A1 (de) * 1986-03-29 1987-10-01 Bosch Gmbh Robert Griff fuer handwerkzeugmaschinen
GB2230728A (en) * 1989-04-17 1990-10-31 Kioritz Corp Engine hammer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB142922A (en) * 1919-02-12 1920-05-12 Alexander George Slade Improvements in or relating to percussive pneumatic hand tools
DE2839545A1 (de) * 1978-09-12 1980-03-20 Maco Meudon Sa Vorrichtung zum steuern der pressluftzufuhr eines schlagarbeitsgeraetes
EP0028029A1 (fr) * 1979-10-29 1981-05-06 Black & Decker Inc. Outil électrique portable
DE3404962A1 (de) * 1984-02-11 1985-08-14 Robert Bosch Gmbh, 7000 Stuttgart Haltegriff fuer bohrmaschinen und/oder bohrhaemmer
DE3610682A1 (de) * 1986-03-29 1987-10-01 Bosch Gmbh Robert Griff fuer handwerkzeugmaschinen
GB2230728A (en) * 1989-04-17 1990-10-31 Kioritz Corp Engine hammer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1585154A1 (fr) * 2004-04-02 2005-10-12 BLACK & DECKER INC. Configuration d'un interrupteur de déclenchement pour un outil électrique

Also Published As

Publication number Publication date
DE4006721A1 (de) 1991-09-19
EP0445636B1 (fr) 1995-01-18
DE59104279D1 (de) 1995-03-02

Similar Documents

Publication Publication Date Title
EP1944134B1 (fr) Machine-outil manuelle portative
DE19521423B4 (de) Handwerkzeugmaschine mit batteriegespeistem Antriebsmotor und Batterie-Baueinheit für eine derartige Handwerkzeugmaschine
DE10130548B4 (de) Zusatzhandgriff
EP1789235B1 (fr) Outil electrique a double interrupteur
EP1674216B1 (fr) Poignée latérale
DE102005000205A1 (de) Handgriff eines handgeführten Werkzeuggerätes
EP1755815A1 (fr) Scie universelle
DE10254451A1 (de) Kraftgetriebenes, handgeführtes Werkzeug mit Seitenhandgriff
DE102006021307A1 (de) Handwerkzeugmaschine mit einem vibrationsgedämpften Handgriff
DE2804223A1 (de) Zusatzhandgriff fuer eine motorisch angetriebene, insbesondere axiale schlaege ausfuehrende handwerkzeugmaschine
EP0487457A1 (fr) Outil pour forer et ciseler
EP3263289A1 (fr) Machine-outil portative
DE10236135B4 (de) Tragbares, handgeführtes Werkzeug
DE102004003711A1 (de) Elektrische Handwerkzeugmaschine, die einen insbesondere elektronisch kommutierten Elektromotor aufweist
DE4019894A1 (de) Elektrohandwerkzeug
EP0408985A2 (fr) Outil électrique à main
DE3324545A1 (de) Elektromotorisch betriebenes handgeraet
EP0445636B1 (fr) Marteau actionné par électricité
DE202015000336U1 (de) Elektrisches Werkzeug
DE10309057B4 (de) Handgeführtes Arbeitsgerät mit einer einstellbaren Drehmomentbegrenzung
DE102007061715A1 (de) Griffvorrichtung, insbesondere Handwerkzeugmaschinengriffvorrichtung
EP0421121A2 (fr) Marteau actionnée électriquement
DE3311421A1 (de) Elektromotorisch betriebenes handgeraet
DE10066115B4 (de) Betätigungshandgriff
CH666206A5 (de) Haltegriff fuer bohrmaschinen und/oder bohrhaemmer.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

17P Request for examination filed

Effective date: 19920131

17Q First examination report despatched

Effective date: 19930818

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59104279

Country of ref document: DE

Date of ref document: 19950302

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950327

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990219

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090223

Year of fee payment: 19

Ref country code: CH

Payment date: 20090223

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090417

Year of fee payment: 19

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228