EP1629943A2 - Carter de protection - Google Patents

Carter de protection Download PDF

Info

Publication number
EP1629943A2
EP1629943A2 EP05106756A EP05106756A EP1629943A2 EP 1629943 A2 EP1629943 A2 EP 1629943A2 EP 05106756 A EP05106756 A EP 05106756A EP 05106756 A EP05106756 A EP 05106756A EP 1629943 A2 EP1629943 A2 EP 1629943A2
Authority
EP
European Patent Office
Prior art keywords
shielding
protective cover
cover according
carrier elements
base element
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
EP05106756A
Other languages
German (de)
English (en)
Other versions
EP1629943A3 (fr
EP1629943B1 (fr
Inventor
Christian Koschel
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 EP1629943A2 publication Critical patent/EP1629943A2/fr
Publication of EP1629943A3 publication Critical patent/EP1629943A3/fr
Application granted granted Critical
Publication of EP1629943B1 publication Critical patent/EP1629943B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools

Definitions

  • the invention relates to a protective cover for use on a hand tool, in particular an angle grinder.
  • This has a basic element for at least partially covering a motor, in particular rotational, driven tool of the power tool, by which access to the tool during operation should be avoided.
  • the protective cover has a shielding element movably held on the base element. With this a shielding surface can be produced in addition to the basic element, with which a person operating can be shielded against sparks and other solid particles, which are removed and accelerated by the power tool.
  • the shielding element is movable relative to the base member between an engaged position with minimum additional shielding area and a disengaged position with maximum additional shielding area.
  • Such protective covers can prevent the sparks flying during operation of the hand tool device and other solid particles removed and accelerated by the tool from the operating person. As a result, impairments and injuries to the operator are avoided.
  • the shield can be spent in the engaged position in which it is at least largely included in the base element or close to this.
  • a disadvantage of the prior art is that the shielding element in the disengaged position in normal applications for angle grinders, such as grinding and metal work, leads to permanent disabilities.
  • the inspection of the work area is in many cases severely limited.
  • the shield must be adjusted to deflect only a small portion of the sparking generated.
  • the known protective cover is relatively heavy and causes high production costs.
  • the present invention has for its object to avoid the disadvantages mentioned in a protective cover and to allow for minimal obstruction during operation, a good shielding the operator against abraded by the tool solid particles.
  • the object is achieved in that the additional shielding surface of the shielding element has an adjustable shielding width.
  • the shielding width can be reduced in the engaged position in order to be able to accommodate the shielding element as completely as possible in the basic element. As a result, obstructions can be at least almost completely excluded by the shielding in the engaged position.
  • the shielding width is adjustable as a function of the position of the shielding element relative to the base element and is lower in the engaged position than in the disengaged position. This achieves automatically in the disengaged position an improved shielding of the operator against the removed solid particles and in the engaged position a minimized required space for receiving the shielding in the primitive.
  • the shielding member has a bending section, which can be applied over its longitudinal extent to a curved inner side of the Grundlementes, which encloses the tool during operation in the radial direction partially. This allows in the engaged position, at least partially receiving the shielding element within the base element. In this way, in the engaged position obstructions can be minimized or completely excluded by the shielding.
  • the shielding element has two carrier elements that are movable relative to each other and that span a tissue between them. This gives a particularly lightweight and inexpensive to produce shielding, in which the shielding width can be easily changed.
  • the fabric is formed by a flame retardant material, such as Kevlar®.
  • a sparks flying during operation can also be permanently led away safely away from the serving person by the shielding element.
  • the support elements are slidably held on the base member.
  • a spreading element is provided which positions the carrier elements relative to one another as a function of their position relative to the base element.
  • the shielding width of the shielding element is adjustable by simple structural means. In this way, the manufacturing costs can be reduced and the stability can be increased.
  • the support elements are advantageously formed by bimetal rods, whereby a good flexibility and lasting elasticity of the support elements can be secured.
  • the carrier elements are biased to each other.
  • a trouble-free movement of the shielding element from the disengaged position to the engaged position is possible.
  • the bias is generated by at least one rubber band that connects the two support elements.
  • the bias can be provided in a particularly simple manner and with minimal space required.
  • the carrier elements are held pivotably on a sliding element which can be fixed along a guide recess formed on the base element.
  • a fast, stable and continuous adjustment of the position of the shielding element relative to the base element is possible.
  • the Schutzabdekkung can be optimally adapted to different types of applications of the power tool.
  • the determination of the sliding element takes place via a fixing device, which projects through the guide recess with a threaded shaft, which in the Sliding element is screwed.
  • the sliding element can be fixed in a particularly simple manner with respect to the guide recess.
  • FIG. 1 shows a hand tool 2 in the form of an angle grinder during the machining of a metallic workpiece 4 by means of a rotating tool 5.
  • a hand tool 2 On the hand tool 2 is a generally designated 6 protective cover attached, which consists essentially of a fixed to the power tool 2 basic element 8 and a again consists of this held shielding element 10.
  • the shielding member 10 is in a disengaged position in which it blocks a flying sparks of the workpiece 4 shown by arrows F.
  • a serving person not shown, who holds the hand tool 2, shielded by the shielding 10 before the flying sparks F and other from the tool 5 removed and accelerated solid particles.
  • the shielding element 10 can be spent from the disengaged position to an indented position shown in dashed lines or any intermediate position.
  • the shielding member 10 is bendable over its entire length. Therefore, according to the dashed representation, it can be applied to a curved inner side 16 of the base element 8, which partially surrounds the tool 5 in its radial direction.
  • the shielding element 10 is formed by two rod-shaped support elements 18, which span a fabric 20 of flame-retardant material, such as Kevlar®.
  • the support elements 18 are formed by bimetallic rods in order to achieve a good elastic deformability.
  • Both support elements 18 are each held at one end about an axis A pivotable on a sliding element 22.
  • this sliding element 22 has a threaded bore 24 into which a threaded shank 26 of the fixing device 14 is screwed, which is rotatably connected to the hand knob 12.
  • This threaded shaft 26 passes through a guide recess 28 which is inserted into the inner side 16 and along which the sliding element 22 is displaceable.
  • the hand knob 12 is rotated, whereby it is increasingly screwed into the threaded bore 24 while the base element 8 is clamped to the guide recess 28 between the sliding element 22 and the hand knob 12.
  • a nokkenförmiges expansion element 30 is further formed between the support members 18.
  • the support elements 18 are pressed by an acting between two rubber band 32 to each other opposite sides of the expansion element 30.
  • the shielding width B S is slightly smaller than a receiving width B A of the inside 16.
  • the inner side 16 forms the bottom of a U-shaped cross-sectional area of the base element 8. In this way, the shielding element 10 can be completely received in the U-shaped cross-sectional area and, in this position, does not form an additional shielding surface with respect to the base element 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP20050106756 2004-07-23 2005-07-22 Carter de protection Not-in-force EP1629943B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410035868 DE102004035868A1 (de) 2004-07-23 2004-07-23 Schutzhaube

Publications (3)

Publication Number Publication Date
EP1629943A2 true EP1629943A2 (fr) 2006-03-01
EP1629943A3 EP1629943A3 (fr) 2006-07-05
EP1629943B1 EP1629943B1 (fr) 2008-12-17

Family

ID=35457701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050106756 Not-in-force EP1629943B1 (fr) 2004-07-23 2005-07-22 Carter de protection

Country Status (2)

Country Link
EP (1) EP1629943B1 (fr)
DE (2) DE102004035868A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024068228A1 (fr) 2022-09-30 2024-04-04 Hueck Rheinische Gmbh Outil de presse comprenant une partie cadre et une partie interne
WO2024068230A1 (fr) 2022-09-30 2024-04-04 Hueck Rheinische Gmbh Outil de presse pour presser des panneaux de matériau dans des presses à chaud

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009006860U1 (de) * 2009-05-12 2010-09-30 Makita Corp., Anjo Bodenplatte
DE102019220625A1 (de) * 2019-12-30 2021-07-01 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung, Handwerkzeugmaschine mit der Handwerkzeugmaschinenvorrichtung und Zubehör mit der Handwerkzeugmaschinenvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705611A (en) * 1970-12-16 1972-12-12 Minoru Sakamoto Circular saw and attachment therefor
US3793784A (en) * 1970-07-29 1974-02-26 Fritz Jetzt Protective device for cutting machines
US5974674A (en) * 1998-07-01 1999-11-02 Kelly; Daniel E. Undercut saw

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793784A (en) * 1970-07-29 1974-02-26 Fritz Jetzt Protective device for cutting machines
US3705611A (en) * 1970-12-16 1972-12-12 Minoru Sakamoto Circular saw and attachment therefor
US5974674A (en) * 1998-07-01 1999-11-02 Kelly; Daniel E. Undercut saw

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024068228A1 (fr) 2022-09-30 2024-04-04 Hueck Rheinische Gmbh Outil de presse comprenant une partie cadre et une partie interne
WO2024068230A1 (fr) 2022-09-30 2024-04-04 Hueck Rheinische Gmbh Outil de presse pour presser des panneaux de matériau dans des presses à chaud
DE102022125371A1 (de) 2022-09-30 2024-04-04 Hueck Rheinische Gmbh Presswerkzeug zum Verpressen von Werkstoffplatten in Heizpressen
DE102022125369A1 (de) 2022-09-30 2024-04-04 Hueck Rheinische Gmbh Presswerkzeug mit einem Rahmenteil und einem Innenteil

Also Published As

Publication number Publication date
DE102004035868A1 (de) 2006-02-16
DE502005006255D1 (de) 2009-01-29
EP1629943A3 (fr) 2006-07-05
EP1629943B1 (fr) 2008-12-17

Similar Documents

Publication Publication Date Title
EP1621294B1 (fr) Manche d'outil
EP1777047A1 (fr) Couvercle de protection
DE102004047277A1 (de) Abdeckvorrichtung für ein Werkzeuggerät
EP1053829B1 (fr) Capot d'aspiration pour meuleuse à main
EP1074341A2 (fr) Carter de protection contre la poussière pour outil de meulage de surfaces
DE2845361C3 (de) Justierbare Schnittiefen-Einstellvorrichtung für ein Handmesser
EP1629943B1 (fr) Carter de protection
EP3380273B1 (fr) Tronçonneuse portative manuelle
DE10156387B4 (de) Handwerkzeugmaschine mit Lufteintritts- bzw. Luftaustrittsöffnungen im Gehäuse
EP0610801B1 (fr) Outil à main de surfaçage
DE102010031329A1 (de) Werkzeughalterung für eine Werkzeugmaschine
DE60210218T2 (de) Gehrungssäge
DE102015015640B4 (de) Bearbeitungsvorrichtung
EP1708851A1 (fr) Ouitl manuel electrique
DE69829525T2 (de) Schutzhaube und Steuergeräte für eine Kapp- und Gehrungssäge
DE19807439A1 (de) Handwerkzeugmaschine, insbesondere Winkelschleifer
DE112022003869T5 (de) Pinsel mit verstellbarer zwinge
DE202004004463U1 (de) Sägetisch mit Führungsvorrichtung
DE10012208A1 (de) Vorrichtung zum Fräsen von Nuten
DE60221129T2 (de) Befestigung für ein schleif- oder polierrad
DE102005021212B4 (de) Handarbeitsgerät
DE102013208907A1 (de) Gelenk mit einer Rastvorrichtung
EP3771511A1 (fr) Machine à couper actionnée manuellement et outil pour une machine à couper actionnée manuellement
DE10309057B4 (de) Handgeführtes Arbeitsgerät mit einer einstellbaren Drehmomentbegrenzung
DE10306974B4 (de) Handschleifgerät

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: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20070105

AKX Designation fees paid

Designated state(s): CH DE FR IT LI

17Q First examination report despatched

Effective date: 20070507

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

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 IT LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 502005006255

Country of ref document: DE

Date of ref document: 20090129

Kind code of ref document: P

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

Effective date: 20090918

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

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

Ref country code: FR

Payment date: 20190719

Year of fee payment: 15

Ref country code: DE

Payment date: 20190719

Year of fee payment: 15

Ref country code: IT

Payment date: 20190730

Year of fee payment: 15

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

Ref country code: CH

Payment date: 20190719

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005006255

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20200731

Ref country code: CH

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

Effective date: 20200731

Ref country code: LI

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

Effective date: 20200731

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: 20210202

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: 20200722