EP2062699A3 - Motor-driven hand-held circular saw with rotatable protective hood - Google Patents

Motor-driven hand-held circular saw with rotatable protective hood Download PDF

Info

Publication number
EP2062699A3
EP2062699A3 EP08013500A EP08013500A EP2062699A3 EP 2062699 A3 EP2062699 A3 EP 2062699A3 EP 08013500 A EP08013500 A EP 08013500A EP 08013500 A EP08013500 A EP 08013500A EP 2062699 A3 EP2062699 A3 EP 2062699A3
Authority
EP
European Patent Office
Prior art keywords
saw blade
circular saw
protective hood
saw
motor
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
EP08013500A
Other languages
German (de)
French (fr)
Other versions
EP2062699B1 (en
EP2062699A2 (en
Inventor
Hans Ruf
Olaf Schmid
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP2062699A2 publication Critical patent/EP2062699A2/en
Publication of EP2062699A3 publication Critical patent/EP2062699A3/en
Application granted granted Critical
Publication of EP2062699B1 publication Critical patent/EP2062699B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
    • B27G19/04—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws for manually-operated power-driven circular saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/38—Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Abstract

Die Erfindung betrifft eine motorisch angetriebene Handkreissäge (2) mit einem Maschinengehäuse (4) und einer demgegenüber ortsfest und drehbar gelagerten Antriebsspindel (6), bezüglich derer ein Sägeblatt (8) drehfest montierbar ist, wobei das Sägeblatt (8) über eine Auflagefläche (10) der Handkreissäge um die Bearbeitungstiefe vorsteht, und mit einer Schutzhaube (12) für das Sägeblatt (8), die an dem Maschinengehäuse (4) angelenkt und in der Ebene des Sägeblatts (8) oder einer hierzu parallelen Ebene verdrehbar ist und das Sägeblatt (8) radial außen überfängt, wobei die Schutzhaube (12) in Richtung auf eine Endstellung federvorgespannt ist und in dieser Endstellung zumindest den über die Auflagefläche der Handkreissäge vorstehenden Teil des Sägeblatts überfängt; um die Bedienbarkeit zu verbessern ist die Handkreissäge gekennzeichnet durch eine die Schutzhaube (12) in ihrer anderen Endstellung entgegen der Federvorspannung haltende Arretiereinrichtung (16), die zudem und gleichzeitig in eine Sperrstellung mit der Antriebsspindel (6) bringbar ist, und dadurch dass die Schutzhaube (12) einen in ihrer Umfangs/Drehrichtung (18) hintergreifbaren Abschnitt (20) aufweist, mit dem ein Sperrorgan (22) der Arretiereinrichtung (16) verriegelnd zusammenwirkt.

Figure imgaf001
The invention relates to a motor-driven circular saw (2) with a machine housing (4) and a fixedly mounted and rotatably mounted drive spindle (6), with respect to which a saw blade (8) is rotatably mounted, wherein the saw blade (8) via a bearing surface (10 ) of the circular saw projecting to the machining depth, and with a protective cover (12) for the saw blade (8) which is articulated on the machine housing (4) and in the plane of the saw blade (8) or a plane parallel thereto rotatable and the saw blade ( 8) overhanging radially on the outside, the protective hood (12) being spring-biased in the direction of an end position and, in this end position, overhanging at least the part of the saw blade protruding beyond the contact surface of the circular saw; To improve the operability of the circular saw is characterized by the protective hood (12) in its other end position against the spring bias holding locking device (16), which also and simultaneously in a locking position with the drive spindle (6) can be brought, and thereby that the protective hood (12) has in its scope / rotational direction (18) engage behind section (20), with which a locking member (22) of the locking device (16) cooperating locking.
Figure imgaf001
EP20080013500 2007-11-21 2008-07-26 Motor-driven hand-held circular saw with rotatable protective hood Active EP2062699B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710055650 DE102007055650B3 (en) 2007-11-21 2007-11-21 Motor-driven circular saw with rotatable protective cover

Publications (3)

Publication Number Publication Date
EP2062699A2 EP2062699A2 (en) 2009-05-27
EP2062699A3 true EP2062699A3 (en) 2010-03-31
EP2062699B1 EP2062699B1 (en) 2011-03-30

Family

ID=40352206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080013500 Active EP2062699B1 (en) 2007-11-21 2008-07-26 Motor-driven hand-held circular saw with rotatable protective hood

Country Status (2)

Country Link
EP (1) EP2062699B1 (en)
DE (2) DE102007055650B3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009036797A1 (en) * 2009-08-08 2011-02-10 Metabowerke Gmbh Motor-driven circular saw
CN105235017B (en) * 2015-10-29 2017-08-15 河南理工大学 A kind of electric saw emergency braking control device
JP6857536B2 (en) * 2017-04-06 2021-04-14 株式会社やまびこ Portable cutting machine
CN207189852U (en) 2017-06-05 2018-04-06 米沃奇电动工具公司 Bench saw
JP7299111B2 (en) * 2019-09-03 2023-06-27 株式会社マキタ portable cutting machine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177909A (en) * 1962-07-27 1965-04-13 Robert A Laube Saw blade guard lock
US4402241A (en) * 1981-08-10 1983-09-06 Black & Decker Inc. Spindle locking means for power operated tool
DE3500372A1 (en) * 1985-01-08 1986-07-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Element for locking the drive spindle for the saw blade of a portable circular saw
DE3633655A1 (en) * 1986-10-03 1988-04-14 Black & Decker Inc Portable circular saw
US5075976A (en) * 1991-02-05 1991-12-31 Young Peter W Power tool guard retainer
DE4130174A1 (en) * 1991-09-11 1993-03-25 Metabowerke Kg Circular saw with pivoted motor housing on baseplate - has locking lever, actuated to release locking device for downward movement of motor housing
EP1193036A2 (en) * 2000-09-30 2002-04-03 Festool GmbH Hand machine tool with tool shaft locking device
EP1967310A1 (en) * 2007-03-07 2008-09-10 Mafell AG Hand-held circular saw
EP2045055A2 (en) * 2007-10-04 2009-04-08 Black & Decker, Inc. A power tool

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5782001A (en) * 1996-08-27 1998-07-21 Gray; John W. Circular saw guard hold and release device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177909A (en) * 1962-07-27 1965-04-13 Robert A Laube Saw blade guard lock
US4402241A (en) * 1981-08-10 1983-09-06 Black & Decker Inc. Spindle locking means for power operated tool
DE3500372A1 (en) * 1985-01-08 1986-07-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Element for locking the drive spindle for the saw blade of a portable circular saw
DE3633655A1 (en) * 1986-10-03 1988-04-14 Black & Decker Inc Portable circular saw
US5075976A (en) * 1991-02-05 1991-12-31 Young Peter W Power tool guard retainer
DE4130174A1 (en) * 1991-09-11 1993-03-25 Metabowerke Kg Circular saw with pivoted motor housing on baseplate - has locking lever, actuated to release locking device for downward movement of motor housing
EP1193036A2 (en) * 2000-09-30 2002-04-03 Festool GmbH Hand machine tool with tool shaft locking device
EP1967310A1 (en) * 2007-03-07 2008-09-10 Mafell AG Hand-held circular saw
EP2045055A2 (en) * 2007-10-04 2009-04-08 Black & Decker, Inc. A power tool

Also Published As

Publication number Publication date
EP2062699B1 (en) 2011-03-30
DE102007055650B3 (en) 2009-04-16
EP2062699A2 (en) 2009-05-27
DE502008003001D1 (en) 2011-05-12

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