EP2855099A1 - Dispositif à machine-outil portative - Google Patents

Dispositif à machine-outil portative

Info

Publication number
EP2855099A1
EP2855099A1 EP13723094.2A EP13723094A EP2855099A1 EP 2855099 A1 EP2855099 A1 EP 2855099A1 EP 13723094 A EP13723094 A EP 13723094A EP 2855099 A1 EP2855099 A1 EP 2855099A1
Authority
EP
European Patent Office
Prior art keywords
racket
rotary
hand
output unit
tool device
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
EP13723094.2A
Other languages
German (de)
English (en)
Other versions
EP2855099B1 (fr
Inventor
Tobias Herr
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 EP2855099A1 publication Critical patent/EP2855099A1/fr
Application granted granted Critical
Publication of EP2855099B1 publication Critical patent/EP2855099B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B25B21/026—Impact clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/08—Means for driving the impulse member comprising a worm mechanism, i.e. a continuous guide surface with steadily rising and falling incline
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/10—Means for driving the impulse member comprising a cam mechanism
    • B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
    • B25D11/104—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool with rollers or balls as cam surface
    • 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
    • B25D16/003—Clutches specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/006—Parallel drill and motor spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0038—Tools having a rotation-only mode
    • 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
    • B25D2250/045—Cams used in percussive tools
    • 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
    • B25D2250/231—Sleeve details

Definitions

  • the invention is based on a hand-held power tool device having an output unit, a racket and a rotary impact receiver, which is provided to produce a rotary impact transmission between the racket and the output unit, at least in a rotary impact operation.
  • the hand-held power tool device has a rotary shut-off device which is provided, at least in a hammer-striking mode, for the rotational shock transmission from the racket to the drum
  • the tool chuck spindle transmits at least one rotational impact pulse to the tool chuck
  • the tool chuck spindle is intended to transmit at least one hammer blow impulse to the tool chuck Output unit having a striker, which is intended to transmit the hammer blow pulse to the tool chuck.
  • the term "bat” is to be understood as meaning a means which, at least in a rotational impact operation at least rotationally and / or at a hammer impact operation at least
  • Pulse as a rotary impact pulse and / or as a hammer blow impulse emits in the direction of an output unit.
  • the racket is integrally formed.
  • the racket could be formed in several pieces. Under a
  • the rotary impact sensor is connected in a rotationally fixed manner to the output unit in at least one operating state, preferably at least in a rotary impact mode
  • the rotary impact sensor could be connected to the output unit in a torque-proof manner only in the rotary impact mode
  • Rotary impulse transmits over the rotary impact sensor to the output unit.
  • the phrase "produce a rotary impact transmission” is intended to mean that the rotary impact sensor produces a mechanical connection in at least one operating state, via which the series of rotary impact pulses is transmitted from the racket to the output unit during the rotational impact operation a device is understood, which is intended to interrupt the transmission of the series of rotary impact pulses in an operation.
  • the Drehschlagabschaltvoretti moves a rotational impact surface of the rotary impact absorber and an effective range of the racket apart in particular in the axial direction.
  • the Drehtschabschaltvorides interrupts the rotational acceleration of the racket.
  • a "hammer impact mode” is to be understood as an operating state in which the beater transmits a series of hammer impact pulses received in the axial direction by an acceleration to the output unit a operating state, preferably at a transition from the rotary impact operation in the hammer blow mode, the transmission of the series of rotational impact pulses from the racket to the output unit in particular ended secondarily.
  • the embodiment of the handheld power tool device according to the invention makes it possible to constructively provide a particularly versatile handheld power tool.
  • the racket is provided, at least one rotary impact pulse in the rotational impact operation and at least one hammer blow pulse in the direction of the hammer blower operation in the direction of
  • an energy of the rotary impact pulse transmitted to the output unit is preferably at least twice, advantageously four times as large as one
  • a "hammer impact impulse” should be understood to mean, in particular, an impulse acting in the axial direction, which drives at least one insert tool fastened by the tool chuck with a movement away from the striker during the hammer striking operation.
  • the energy of the hammer blow pulse transmitted to the output unit is at least twice, preferably four times, the energy of the rotary impact pulse transmitted to the output unit.
  • the Drehtschabschaltvorraum is provided to store the Drehtschaufrichsmelling axially displaceable, which structurally simple switching between the rotary impact operation and the hammer blow operation is possible.
  • axially displaceable storage that the Drehtschabschaltvortechnisch is intended to change a position of the Wheeltschetzillersacrificings relative to the output unit and / or relative to a stop position of the racket.
  • the bat catching device rotatably releases the bat in the circumferential direction, at least during the rotational impact operation, so that structurally simple advantageous rotational stroke operation is possible.
  • the bat catching device rotatably releases the bat in the circumferential direction, at least during the rotational impact operation, so that structurally simple advantageous rotational stroke operation is possible.
  • the hand-held power tool device comprises a rotary drive shaft which is provided to drive the output unit in rotation in at least one impact drilling mode and in particular in a drilling and / or screwing mode, whereby the different operating modes can be provided in a structurally simple manner.
  • a "rotary drive shaft” is to be understood in particular as meaning a shaft which, in particular, directly rotates a rotational movement generated by a drive unit of the hand-held power tool device
  • the hand-held power tool device has a rotary drive coupling which is intended to separate the rotary drive shaft and the output unit at least in a rotary impact mode, whereby a switching between the operating modes with little Effort is possible.
  • a “rotary drive coupling” is to be understood as meaning, in particular, a device which is intended to transmit a rotational movement from the rotary drive shaft, in particular directly to the output unit drives in a circumferential direction in a working process.
  • the tool chuck fixes the insert tool in the axial direction of the rotary impact mode.
  • the rotary drive coupling interrupts the transmission of the rotational movement of the rotary drive shaft to the output unit.
  • the beater at least substantially encloses the rotary drive shaft on at least one plane, as a result of which a particularly small overall size can be achieved with a large beater mass.
  • the phrase "at least substantially enclosing at least one level" is intended to mean that beams radiating from an axis of the rotary drive shaft and intersecting the plane intersect the racket over an angular range of at least 180 degrees, advantageously at least 270 degrees.
  • the racket it is particularly advantageous for the racket to enclose the rotary drive shaft by 360 degrees, and it is proposed that the handheld power tool device comprise a racket drive shaft which at least substantially encloses the rotary drive shaft on at least one plane, whereby a compact design and a simple assembly can be achieved "should be understood in particular a wave that is intended to transmit in particular only one energy for Schlagenmaschineung.
  • chisel coupling is to be understood in particular as meaning a device which is provided for non-rotatably fastening the output unit relative to a hand tool housing
  • “Chisel mode” means a mode in which the tool chuck drives the insert tool during a working operation in the axial direction and fixed in the circumferential direction.
  • FIG. 1 shows a hand-held power tool with a hand-held power tool device according to the invention in a schematic sectional illustration
  • FIG. 2 shows the hand-held power tool device from FIG. 1 in a partially schematic side view
  • FIG. 3 shows the hand-held power tool device from FIG. 1 in a frontal-off position.
  • FIG. 5 shows an alternative embodiment of the hand-held power tool device from FIG. 1 in a partially schematic side view
  • FIG. 6 shows a racket drive shaft of the hand-held power tool device
  • FIG. 1 shows a handheld power tool 32a having a handheld power tool apparatus 10a according to the invention, a drive unit 34a, a gearbox 36a, a tool chuck 38a, a hand tool housing 39a and a
  • the hand tool battery 40a provides operating power to the drive unit 34a.
  • the hand tool battery 40a is releasably connected to the hand tool housing 39a by an operator.
  • the hand tool housing 39a has a pistol-shaped basic shape.
  • the hand tool housing 39a respectively connects a part of the hand tool device 10a, the drive unit 34 and the gear 36a.
  • the tool chuck 38a is provided to fix an insert tool 42a in the axial direction and rotationally fixed.
  • the transmission 36a is provided to reduce a rotational speed of the drive unit 34a to a rotational speed of the tool chuck 38a. In this case, a translation of the transmission 36a is adjustable in two stages.
  • the drive unit 34a is provided to convert an electrical energy originating from the hand tool battery 40a into a rotary movement.
  • FIGS. 2 to 4 show the handheld power tool device 10a.
  • the handheld power tool device 10a comprises an output unit 12a.
  • the output unit 12a is connected in the axial direction and rotationally fixed to the tool chuck 38a.
  • the output unit 12a is axially displaceable and rotatably mounted in the hand tool housing 39a.
  • the output unit 12a is designed as a tool spindle.
  • the output unit 12a transmits a rotational movement, a rotary impact pulse and / or a hammer impact pulse in one operation directly on the tool chuck 38a.
  • the handheld power tool device 10a has a racket 14a and a racket drive shaft 26a.
  • the racket 14a is driven by the racket driving shaft 26a in a rotary impact operation and a hammering operation.
  • the racket drive shaft 26a is formed as a hollow shaft.
  • the racket 14a has two cam guides 44a, of which a first cam guide 44a facing the viewer is shown by a dotted line.
  • the second of the cam guides 44a is arranged symmetrically on an opposite side of the racket drive shaft 26a.
  • the cam guides 44a of the racket 14a are arranged on a nenseite of the racket 14 a arranged.
  • the racket driving shaft 26a has two cam guides 46a shown by a chain line.
  • the cam guides 46a of the racket driving shaft 26a are disposed on a side of the racket drive shaft 26a facing the racket 14a, that is, on an outer side of the racke
  • the hand-held power tool device 10a comprises two connecting means 48a, which are intended to translate rotational movement of the racket drive shaft 26a into a rotary striking movement and / or a hammer-striking movement of the racket 14a. Only one of the connecting means 48a is shown. Each of the connection means 48a runs in one of the cam guides 44a of the racket 14a and in one of the cam guides 46a of the racket drive shaft 26a.
  • the hand-held power tool device 10 has a percussion spring 50a, which causes a force in the direction of the tool chuck 38a on the racket 14a.
  • the handheld power tool device 10a comprises a rotary impact receiver 16a.
  • the Drehscher Stammauer 16a is rotatably connected to the output unit 12a in the rotary impact operation.
  • a rotary impact shut-off device 18a of the handheld power tool device 10a supports the rotary impact sensor 16a in an axially displaceable manner.
  • the Drehschlagabschaltvortechnisch 18 a has a in the
  • the Drehtschetziersacrificing 16a introduced groove and a non-illustrated, the expert appears appropriate mechanism for the axial displacement of the rotary impact sensor 16a.
  • the Drehscher Stammauer 16 a is shown in a shifted in the direction of the tool chuck 38 a position, that is like a hammer blow operation.
  • the rotary impact receiver 16a is displaced in a position in the direction of the racket 14a.
  • Rotary impact sensor 16a has two rotational impact surfaces 52a, on which the beater 14a strikes in the rotational impact operation and thereby transmits the rotary impact pulse.
  • the racket 14a is movably supported in the rotational direction in the circumferential direction.
  • the connecting means 48a move the racket 14a in a direction away from the rotary rack 16a.
  • the connecting means 48a accelerate the racket 14a in the circumferential direction.
  • the racket 14a receives the rotary impact pulse.
  • the percussion spring 50a pushes the racket 14a back towards the rotary percussion receiver 16a.
  • Bat 14a strike the rotary impact surfaces 52a of the rotary impact absorber 16a and transmit the rotary impact pulse to the rotary beater 16a.
  • the Drehtschaufillon 16a makes in a rotational impact operation a rotational impact transmission between the racket 14a and the output unit 12a ago by the rotational impact pulse from the racket 14a transmits to the output unit 12a.
  • the Drehtschabschaltvorides 18 a is provided for the hammering operation, the rotational impact transmission from the racket 14 a on the
  • the Wheelscherabschaltvorraum 18a moves the Wheeltschiersacrificing 16a in a position in which the rotational impact surfaces 52a of the Drehtschetzêts 16a are out of reach of the rotational impact surfaces 54a of the racket 14a arranged.
  • a racket catching device 20a of the portable power tool device 10a temporarily fixes the racket 14a in a rotationally fixed manner during the hammering operation.
  • the racket catcher 20a comprises
  • the racket catcher 20a rotatably releases the racket 14a in the circumferential direction during the entire rotary impact operation.
  • the club-catching device 20a has a mechanism which is not shown in detail and appears to the skilled person to be useful.
  • the connecting means 48a displaces the racket 14a against the striking mechanism spring 50a in a direction away from the output unit 12a.
  • a force acting on the racket 14a by the connecting means 48a in the circumferential direction exceeds a holding force of the racket catcher 20a
  • the racket catcher 20a releases the racket 14a.
  • the striking mechanism spring 50a accelerates the racket 14a in the direction of the output unit 12a. At this time, the racket 14a rotates.
  • the racket 14a strikes a hammer-striking surface 58a of the output unit 12a with a hammer-striking surface 56a of the racket 14a. At this time, the racket 14a delivers the hammer blow pulse to the output unit 12a. Subsequently, the racket catching device 20a rotatably fixes the racket 14a again. Thus, the racket 14a is provided to deliver a rotary impact pulse in the rotary impact operation and a hammer blow pulse in the direction of the output unit 12a in the hammering operation.
  • the hand-held power tool device 10a has a rotary drive shaft 22a, which is provided to drive the output unit 12a in a percussion drilling mode and in - Kl driving a drilling and / or screwdriving mode rotating.
  • the hand tool device 10a has a rotary drive coupling 24a, which is provided for non-rotatably connecting the rotary drive shaft 22a and the output unit 12a in the impact drilling mode and in the drilling and / or screwing mode.
  • the rotary drive clutch 24 a is provided to the rotary drive shaft 22 a and the output unit
  • the beater 14a encloses the rotary drive shaft 22a on a plane perpendicular to a rotational axis of the rotary drive shaft 22a.
  • the racket drive shaft 26a encloses the rotary drive shaft 22a on a plane which is also aligned perpendicular to a rotational axis of the rotary drive shaft 22a.
  • the handheld power tool apparatus 10a includes a racket clutch 28a provided to rotationally drive the racket drive shaft 26a in the percussion drilling mode, in the chisel mode, and in the rotary impact mode.
  • the beater clutch 28a is provided to stop the beater 14a in the drilling and / or
  • the racket clutch 28a here is partially formed integrally with a gear stage 60a of the power tool apparatus 10a, which is intended to increase a rotational speed of the rotary drive shaft 22a to a rotational speed of the racket drive shaft 26a.
  • a gear stage could reduce a speed of a club drive shaft to a speed of a rotary drive shaft.
  • the hand-held power tool device 10 comprises a chisel coupling 30a shown schematically in FIG. 2, which is provided for non-rotatably fastening the output unit 12a in the chisel mode.
  • FIG. 5 a further embodiment of the invention is shown.
  • the following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with reference in principle also to the drawings and / or the description of the other exemplary embodiment of FIGS. 1 to 4 with respect to identically named components, in particular with regard to components having the same reference numbers can be referenced.
  • the letter a is the reference numerals of the embodiment in the figures 1 to 4 adjusted.
  • the letter a is replaced by the letter b.
  • FIG. 5 shows a hand-held power tool device 10b with a power take-off unit 12b, a beater 14b, a rotary beater 16b, a rotary-impact shut-off device 18b, a club-catching device 20b and a beater drive shaft 26b.
  • the Drehtschabschaltvoriques 18 b is intended to, in a rotational impact operation, a rotary impact transmission between the racket 14 b and the
  • the Drehtschabschaltvorides 18b is intended to interrupt in a hammering operation, the rotational impact transmission from the racket 14b on the rotary impact receptacle 16b.
  • Figure 6 shows the club drive shaft 26b.
  • the club drive shaft 26b has two
  • Cam guides 46b enclose a rotation axis of the racket drive shaft 26b by 360 degrees.
  • Two connecting means 48b are guided in the cam guides 46b.
  • the connecting means 48b are arranged in positions which are invariable relative to the racket 14b.
  • the connecting means 48b are formed as balls, which engage in recesses 62b of the racket 14b fit.
  • the connecting means 48b accelerate the beater 14b in the circumferential direction.
  • the acceleration of the racket 14b in the circumferential direction depends on a steepness of the racket lift area 64b.
  • the percussion spring 50b accelerates the racket 14b axially in the direction of the output unit 12b until the rotational impact surfaces 52b, 54b meet and the Drehtschaufillon 16b transmits the rotational shock pulse in the direction of the output unit 12b.
  • the rotational impact surfaces 52b, 54b are oriented so that the transmission of the rotational impact pulse substantially stops the axial movement of the beater 14b.
  • the racket catcher 20b fixes the racket 14b axially displaceable and non-rotatably during the entire hammering operation.
  • the racket lifting areas 64b of the cam guides 46b move the racket 14b against the percussion spring 50b via the connecting means 48b.
  • the percussion spring 50b moves the racket 14b in the direction of the output unit 12b as soon as the connection means 48b are arranged in the clearing areas 66b.
  • a hammering surface 56b of the racket 14b transmits a hammer blow impulse to a hammering surface 58b of the output unit 12b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

L'invention concerne un dispositif à machine-outil portative comprenant une unité menée (12a), un percuteur (14a) et un récepteur de percussion rotative (16a) qui est prévu pour établir un transfert de la percussion rotative entre le percuteur (14a) et l'unité menée (12a) au moins au cours d'une utilisation roto-percutante. Le dispositif à machine-outil portative comporte un dispositif de désactivation de la percussion rotative (18a), qui est prévu pour interrompre le transfert de la percussion rotative du percuteur (14a) au récepteur de percussion rotative (16a) au moins lors d'une utilisation en coup de marteau.
EP13723094.2A 2012-06-05 2013-05-14 Dispositif d'une machine-outil manuelle Active EP2855099B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012209446A DE102012209446A1 (de) 2012-06-05 2012-06-05 Handwerkzeugmaschinenvorrichtung
PCT/EP2013/059869 WO2013182384A1 (fr) 2012-06-05 2013-05-14 Dispositif à machine-outil portative

Publications (2)

Publication Number Publication Date
EP2855099A1 true EP2855099A1 (fr) 2015-04-08
EP2855099B1 EP2855099B1 (fr) 2018-01-03

Family

ID=48446318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13723094.2A Active EP2855099B1 (fr) 2012-06-05 2013-05-14 Dispositif d'une machine-outil manuelle

Country Status (5)

Country Link
US (1) US10583544B2 (fr)
EP (1) EP2855099B1 (fr)
CN (1) CN104334320B (fr)
DE (1) DE102012209446A1 (fr)
WO (1) WO2013182384A1 (fr)

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CN109590949B (zh) * 2017-09-30 2021-06-11 苏州宝时得电动工具有限公司 用于动力工具的控制装置及方法以及动力工具
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Also Published As

Publication number Publication date
WO2013182384A1 (fr) 2013-12-12
CN104334320A (zh) 2015-02-04
EP2855099B1 (fr) 2018-01-03
CN104334320B (zh) 2016-07-06
US10583544B2 (en) 2020-03-10
DE102012209446A1 (de) 2013-12-05
US20150129268A1 (en) 2015-05-14

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