EP2598289A1 - Machine-outil portative - Google Patents

Machine-outil portative

Info

Publication number
EP2598289A1
EP2598289A1 EP11722813.0A EP11722813A EP2598289A1 EP 2598289 A1 EP2598289 A1 EP 2598289A1 EP 11722813 A EP11722813 A EP 11722813A EP 2598289 A1 EP2598289 A1 EP 2598289A1
Authority
EP
European Patent Office
Prior art keywords
locking unit
locking
unit
hand tool
spring clip
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.)
Withdrawn
Application number
EP11722813.0A
Other languages
German (de)
English (en)
Inventor
Gabor Nemeth
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 EP2598289A1 publication Critical patent/EP2598289A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • 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
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools

Definitions

  • an angle grinder which has a machine housing and a locking unit, which is provided for determining a rotational position of a protective hood outside of an operating mode and within an operating mode.
  • the locking unit is on an outer periphery of a
  • Flange neck of the angle grinder arranged, which is fixed to an underside of a gear housing of the angle grinder.
  • the invention relates to a hand tool, in particular an angle grinder, with a machine housing and a locking unit, which is provided for determining at least one rotational position of a protective hood outside of a mode of operation.
  • the locking unit is at least partially disposed within the machine housing.
  • “outside an operating mode” is to be understood in particular as meaning a mode of the handheld power tool in which a power switch is switched off and, in particular, a switch-on operating element is arranged in an exhibition Arretierü is arranged within an interior of a component, which has at least one interior in which differing from the locking unit machine components are arranged, in particular electronic components, engine components and / or particularly advantageous transmission components.
  • the nenraum in which at least a part of the locking unit is arranged, and the interior, in which the different of the locking unit components are arranged, can be separated from a partition wall and / or can be advantageously connected.
  • an "interior space” is to be understood in particular as meaning a space which is bounded by an inner surface of the machine housing which is opposite a visible outer surface, in particular at least partially invisible, in particular of at least two and preferably of at least three sides
  • the locking unit can be arranged particularly protected and a space-saving design can be achieved
  • the locking unit is preferably designed as a locking protection device, in which case an "air-bag protection device” should in particular comprise a V Orraum understood, which is intended to avoid in a case of damage of a tool, in particular a breaking a tool, an undesirable rotation of the guard from a predetermined by the locking unit rotational position.
  • the locking unit is designed in particular to support a torque acting on the protective hood about an axis of rotation of the protective hood greater than 20 Nm, preferably greater than 40 Nm and more preferably greater than 60 Nm, without damaging the locking unit or the protective hood from her Turned position is rotated.
  • the locking unit has at least one operating element formed by a pushbutton, which is provided for operating the locking unit.
  • a "control element” is to be understood in particular to be an element which is provided to receive an input variable from an operator during an operating procedure and in particular to be contacted directly by an operator, wherein a touch of the operating element senses and / or an action on the A control element is sensed and / or mechanically forwarded to actuate a unit.
  • a "push button” is to be understood as meaning, in particular, a control element which is provided for at least one control element
  • the push button is mounted on the machine housing and / or protrudes at least partially through a housing wall of the machine housing, and a particularly simple and comfortable operation can be achieved with a corresponding print head
  • a particularly space-saving actuating element can be achieved
  • the push-button is arranged in a longitudinal center plane of the machine housing so that it can preferably be operated in the same way comfortably by a left-hander and a right-handed person.
  • the locking unit has at least one spring clip which is elastically deformed in at least one operating operation of the locking unit.
  • a "spring clip” is to be understood in particular to mean an elongate component whose main extension, ie largest component dimension, is at least twice as large and particularly preferably at least four times as large as its extensions transverse to its main extension and which is provided in particular at least substantially be deflected transversely to its main extension in an elastic deformation, in particular by more than 0.5 mm and particularly advantageously by more than 1 mm, in order to store a clamping force, preferably to an automatic return, under “at least substantially transversely to the main extension "should be understood in particular that a deflection caused by an elastic deformation transverse to the main extension is greater than a deflection caused by the elastic deformation in the direction of the main extension.
  • the spring clip is particularly preferably formed by a wire component, but could also be formed by a leaf
  • locking unit has at least one operating element which is fastened to the spring clip, additional components, installation space, weight, assembly costs and costs can be saved. Furthermore, a maintenance-friendly construction can be achieved. If the locking unit has a latching unit via which the operating element is fastened to the spring clip, a particularly simple fastening can be achieved.
  • a "locking unit” is to be understood in particular as a unit having at least one latching element which is elastically deflected in a fastening operation to then engage by an internal clamping force behind a corresponding latching element which is intended to deflect a corresponding latching element in a latching operation and / or behind which engages a corresponding locking element.
  • components can be saved if at least one locking element is arranged directly on the spring clip.
  • the term "directly arranged” should be understood to mean, in particular, directly, without interposed components, contacting and, in particular, a single-piece design.
  • “Arresting element” is to be understood in particular as an element which is intended to lock to another arresting element, in particular one Arresting the guard, to be brought into contact, so that on the two locking elements, a locking force can be transmitted, preferably a rotational movement of the guard against the axis of rotation counteracting locking force.
  • in one piece is meant, in particular, materially bonded, as for example by a welding process and / or adhesive process, etc., and particularly advantageously formed, such as by the production from a cast and / or by the production in a one- or multi-component injection molding process the locking element formed by a pin-shaped, integrally formed end portion of the spring clip.
  • the locking unit has a holding unit, which is provided to fix the protective hood axially positively, an advantageous securing of the protective hood can be achieved with a compact construction.
  • FIG. 1 shows a detail of a sectional view of a system with a hand tool according to the invention and a protective hood in a locked state of the protective hood
  • Fig. 3 is a figure 1 corresponding representation when the protective hood and
  • Fig. 4 is a figure 2 corresponding representation when the protective hood.
  • the angle grinder has a machine housing 10 formed by a gear housing.
  • the machine housing 10 is formed by two shell components, but could also be formed by a pot component.
  • the machine housing 10 has an inner space 20, in which gear parts of an angle gear 22 are arranged.
  • the angle gear 22 includes a ring gear 24 and a meshing with the ring gear 24, not shown in detail pinion, both of which are arranged in the interior 20 of the machine housing 10.
  • the pinion is drivingly connected to a drive shaft of an electric motor, not shown, of the power tool, which is arranged in a likewise not shown motor housing of the angle grinder.
  • the output shaft 26 of the bevel gear 22 is arranged with a first part facing away from a protective hood mounting region 38 of the portable power tool within the interior 20 of the machine housing 10 and projects out of the inner space 20 with a second part facing the protective hood mounting region 38.
  • the output shaft 26 is mounted in the machine housing 10 via two bearings 28, 30 arranged in the interior 20.
  • the part of the output shaft 26 protruding from the interior 20 has a receiving area 32 for receiving a separating and / or grinding wheel.
  • the handheld power tool further has a locking unit 11, which is provided for fixing a plurality of rotational positions of the protective hood 12 inside and outside an operating mode of the handheld power tool and which is designed as an armature protection device.
  • the locking unit 1 1 is partially disposed within the machine housing 10, within the interior 20 of the machine housing 10.
  • the locking unit 1 1 comprises a control element formed by a push button 14, which is provided for operating the locking unit 1 1.
  • the push button 14 is arranged on a pointing in the longitudinal direction of the power tool, front end 34 of the machine housing 10.
  • the push button 14 is arranged in a recess of the machine housing 10 and projects through a wall 52 of the machine housing 10 from an outer side of the machine housing 10 into the inner space 20.
  • the push button 14 is mounted pivotably in the machine housing 10.
  • the push button 14 has two lateral bearing pins 36, by means of which the push button 14 is pivotally mounted within the wall 52 on its upper side remote from the protective hood mounting area 38.
  • the push button 14 is fixed by means of a latching unit 17 on a spring clip 16 of the locking unit 1 1, which is elastically deformed in an operation of the locking unit 1 1 and which is formed by a spring steel wire.
  • the spring clip 16 is arranged for the most part within the interior 20 of the machine housing 10.
  • the spring clip 16 is arranged on one of the front side 34 of the hand tool machine side facing the angle gear 22.
  • the spring clip 16 is on an end region 40 facing away from the protective hood attachment region 38, on a protective cover attachment region 38 facing away from the angular gear 22 in the machine housing 10 firmly clamped. In addition to a clamping and ribs are also conceivable, which are provided for guiding the spring clip 16 at an elastic deflection thereof.
  • the spring clip 16 extends from the end region 40 in the axial direction of the output shaft 26 past the angle gear 22 along a
  • the spring clip 16 has a wall 52 corresponding curvature.
  • On a protective hood mounting portion 38 facing side of the angle gear 22 of the spring clip 16 is coupled to the push button 14, by means of the locking unit 17 firmly connected.
  • the latching unit 17 is formed by integrally formed on the push button 14 latching hook, between which the spring clip 16 is engaged.
  • a locking element 18 is integrally formed on the spring clip 16.
  • the locking element 18 is formed by an end region 42 of the spring clip 16.
  • the end region 42 is arranged on a side of the angle gear 22 facing the protective hood fastening region 38.
  • the spring clip 16 is angled on a side facing the locking element 18 side.
  • the spring clip 16 has two substantially 90 ° bends, wherein “substantially” is to be understood in particular to mean that the bends deviate less than 10 ° and preferably less than 5 ° from 90 °.
  • the locking unit 1 1 has a holding unit 19 fastened to the machine housing 10, which is intended to mount the protective hood 12 axially, i. in axial
  • the holding unit 19 is formed by a steel sheet.
  • the steel sheet is annular and has integrally formed on its outer periphery, radially outwardly facing tabs 44 ( Figure 2).
  • the protective cover 12 has at its radial inner circumference of its top wall 45 recesses 46, the dimensions of the
  • Lugs 44 correspond, so that when mounting the protective cover 12 in the protective hood mounting portion 38 of the power tool, the tabs 44 can be guided through the recesses 46. If the protective hood 12 is then rotated, an edge region of the radial inner circumference of the cover wall 45 is guided behind the lugs 44, as a result of which the protective hood 12 is deflected in the axial direction, in particular into a machine housing 10. turned axial direction, is positively fixed to the power tool.
  • the holding unit 19 together with the protective hood 12 forms a bayonet closure.
  • the holding unit 19 is integral with a receiving unit for receiving the
  • Locking element 18 of the locking unit 1 1 in a locked state of the protective cover 12 is formed.
  • a guide slot 48 is introduced into one of the lugs 44, through which the locking element 18 engages and in which the locking element 18 is supported in the circumferential direction of the output shaft 26 by means of edges of the receiving unit delimiting the guide slot 48.
  • the locking element 18 engages through the guide slot 48 in one of a plurality of circumferentially juxtaposed, slot-shaped recesses 50 of the top wall 45.
  • Engages a circumferential direction of the output shaft 26 acting torque on the protective cover 12 this is a the slot-shaped recess 50 limiting edge of the top wall 45 on the locking member 18 and transmitted from the locking member 18 on the guide slot 48 bounding edge of the receiving unit and supported on the receiving unit on the machine housing 10.
  • the push button 14 is pressed by an operator.
  • the push button 14 pivots conditionally by a spanned by a bearing pin 36 pivot axis, whereby at the same time the spring clip 16 is pivoted in the radial direction to the output shaft 26 and elastically deformed ( Figures 3 and 4).
  • the locking element 18 performs a movement with a component in the radial direction to the output shaft 26 and a component in an axial direction away from the protective hood fastening area 38 or in an axial direction facing away from the protective hood 12.
  • the locking element 18 is characterized by that of the present
  • Rotary position associated recess 50 moves out, whereby the lock is released. Subsequently, the guard 12 can be rotated to another rotational position. If an actuation force on the push button 14 is released immediately after it has been led out of the recess 50 and a slight twisting of the protective cover 12, the locking element 18 slides on a surface of the protective cover in a subsequent further rotation. be 12 until the locking member 18 engages in the next recess 50 caused by a stored in the spring clip 16 inner clamping force, whereby the protective cover 12 is locked again. Due to the internal clamping force and the push button 14 is returned to its original position. The spring clip 16 thus also forms a return element for the push button 14. Alternatively, the
  • Push button 14 are also kept pressed by an operator until a desired rotational position of the protective cover 12 is reached and the locking member 18 can engage in a recess 50.

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)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

La présente invention concerne une machine-outil portative, en particulier une meuleuse d'angle, comportant un boîtier (10) de machine et une unité de blocage (11) qui sert à fixer au moins une position de pivotement d'un capot de protection (12) en dehors d'un mode de fonctionnement. Selon l'invention, l'unité de blocage (11) est disposée au moins partiellement à l'intérieur du boîtier (10) de la machine.
EP11722813.0A 2010-07-28 2011-06-01 Machine-outil portative Withdrawn EP2598289A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010038509 DE102010038509A1 (de) 2010-07-28 2010-07-28 Handwerkzeugmaschine
PCT/EP2011/059051 WO2012013397A1 (fr) 2010-07-28 2011-06-01 Machine-outil portative

Publications (1)

Publication Number Publication Date
EP2598289A1 true EP2598289A1 (fr) 2013-06-05

Family

ID=44119416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11722813.0A Withdrawn EP2598289A1 (fr) 2010-07-28 2011-06-01 Machine-outil portative

Country Status (5)

Country Link
EP (1) EP2598289A1 (fr)
CN (1) CN103025488A (fr)
DE (1) DE102010038509A1 (fr)
RU (1) RU2013108690A (fr)
WO (1) WO2012013397A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7001491B2 (ja) * 2018-02-23 2022-01-19 株式会社マキタ 電動工具
DE102022204131A1 (de) 2022-04-28 2023-11-02 Robert Bosch Gesellschaft mit beschränkter Haftung Spindelarretierungsvorrichtung, Werkzeugaufnahme und Montageverfahren zur Montage einer Werkzeugaufnahme
CN114683146B (zh) * 2022-05-10 2023-04-04 广东英基精密科技有限公司 一种自吸尘角磨机
CN114683145B (zh) * 2022-05-10 2023-05-12 浙江金智达机电有限公司 一种角磨机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE525836C2 (sv) * 2003-03-31 2005-05-10 Atlas Copco Tools Ab Slipmaskin med sprängskydd och spindellåsning
DE10343060A1 (de) * 2003-09-16 2005-04-07 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube
NL1025173C2 (nl) * 2004-01-06 2005-07-07 Bosch Gmbh Robert Handgereedschap, in het bijzonder een slijper en meer in het bijzonder een haakse slijper.
EP1908549B1 (fr) * 2006-10-07 2010-02-17 Metabowerke GmbH Outil motorisé portatif, en particulier une meuleuse d'angle, avec un capot protecteur
DE102007041840A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube, insbesondere Winkelschleifer
DE102007052684A1 (de) 2007-11-05 2009-05-07 Robert Bosch Gmbh Handwerkzeugmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012013397A1 *

Also Published As

Publication number Publication date
WO2012013397A1 (fr) 2012-02-02
CN103025488A (zh) 2013-04-03
RU2013108690A (ru) 2014-09-10
DE102010038509A1 (de) 2012-02-02

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