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WO2018011206A1 - Système de machine-outil portative - Google Patents

Système de machine-outil portative Download PDF

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Publication number
WO2018011206A1
WO2018011206A1 PCT/EP2017/067401 EP2017067401W WO2018011206A1 WO 2018011206 A1 WO2018011206 A1 WO 2018011206A1 EP 2017067401 W EP2017067401 W EP 2017067401W WO 2018011206 A1 WO2018011206 A1 WO 2018011206A1
Authority
WO
WIPO (PCT)
Prior art keywords
intermediate shaft
bearing
tool device
shaft
hand
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.)
Ceased
Application number
PCT/EP2017/067401
Other languages
German (de)
English (en)
Inventor
Jens Blum
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
Priority to EP17737586.2A priority Critical patent/EP3481590B1/fr
Publication of WO2018011206A1 publication Critical patent/WO2018011206A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles

Definitions

  • the invention is based on a hand-held power tool device having at least one rotary impact mechanism, which has at least one planetary gear with at least one ring gear, at least one striking mechanism cover and at least one intermediate shaft, wherein the intermediate shaft is at least partially supported within the striking mechanism cover.
  • the striking mechanism cover is formed integrally with the ring gear.
  • a handheld power tool should be understood to mean a "handheld power tool device.”
  • the handheld power tool can in this case be any electric machine, but advantageously a rotary impact wrench
  • a "rotary impact mechanism” is to be understood as meaning, in particular, an impact mechanism which is intended to convert an at least substantially continuous power output of a drive unit into an impact-shaped angular momentum.
  • the term "intended” is intended in particular to be specially programmed, designed and / or equipped. be stood.
  • the fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • the rotary impact mechanism can be designed, in particular, as a cam-type impactor or as a V-groove impactor.
  • a “planetary gearbox” should be understood to mean, in particular, a gearbox which has at least one planet connected to a planet carrier, which is coupled in the radial outward direction with a ring gear and / or in the radial direction inwardly with a sun gear and / or the ring gear can in particular be formed by round gears or by matching non-circular gears Several planetary gears can be connected in series and / or several stages can be interposed between the planet gear and the ring gear be, which has a ring which is in the form of a cylinder jacket or in the form of a broken cylinder jacket.
  • a "striking mechanism cover” is to be understood as meaning, in particular, a cover element which is intended to seal the rotary impact mechanism in the direction of at least one further hand-held power tool unit, in particular in the direction of a drive unit, at least to a large extent
  • At least to a large extent is to be understood in this context in particular as at least 51%, preferably at least 65% and particularly preferably at least 75%,
  • the striking mechanism cover has at least one feedthrough recess which leads to at least a partial execution of at least one shaft, in particular a drive shaft, is provided
  • Intermediate shaft is to be understood in particular as meaning a shaft of a drive train which is arranged in particular between a drive unit and an output shaft, in particular a handheld power tool, in particular the at least one intermediate shaft is provided, in particular a force and / or movement generated directly by the drive unit
  • the intermediate shaft is at least partially designed as a planetary gear carrier of the planetary gear.
  • intermediate shaft is supported at least partially within the percussion cover
  • a rotational movement relative to the striking mechanism cover is stored.
  • the striking mechanism cover and the ring gear are at least substantially made of a metallic material, preferably of a metallic sintered material, in particular by a production from a casting and / or by a production in a single or multi-component injection molding process. educated.
  • a generic handheld power tool device having advantageous structural properties can be provided.
  • a length of the hand-held power tool device is for example a maximum of 200 mm, in particular a maximum of 160 mm, very particularly a maximum of 140 mm, particularly preferably a maximum of 130 mm.
  • the length of the portable power tool device comprises in particular the drive unit and the rotary impact mechanism as well as a tool holder.
  • an advantageous short tolerance chain can be achieved.
  • a number of individual components can advantageously be kept low.
  • the handheld power tool device has at least one intermediate shaft bearing for supporting the intermediate shaft, which is arranged at least partially within the striking mechanism cover.
  • an "intermediate shaft bearing” is to be understood as meaning, in particular, a radial bearing which is intended to support the intermediate shaft in a rotatable manner
  • the intermediate shaft bearing can be used, in particular, as a sliding bearing or roller bearing be trained.
  • the intermediate shaft bearing is designed as a roller bearing, for example as a ball bearing, roller bearing or needle roller bearings.
  • an advantageously low-friction bearing of the intermediate shaft can be achieved.
  • an advantageously small length of the rotary impact mechanism can be achieved.
  • the impact mechanism cover has at least one bearing receptacle, which is provided for receiving the intermediate shaft bearing.
  • a "bearing receptacle” is to be understood as meaning, in particular, a region formed at least partly by the striking mechanism cover, which is provided for a stationary arrangement of the intermediate shaft bearing within the striking mechanism cover
  • the bearing receiver has an at least substantially annular stop element for the intermediate shaft bearing on an end facing away from the striking mechanism cover The stop element is in particular integrally formed with the bearing receiver.
  • an inner diameter of the bearing receptacle corresponds at least substantially to an outer diameter of the intermediate shaft bearing fixed by a press fit in the bearing holder.
  • a "press fit” is to be understood in particular as meaning a non-positive connection which can be configured as a transverse and / or longitudinal compression bandage.
  • a “non-positive connection” is to be understood as meaning, in particular, a releasable connection, a holding force between two components preferably being understood a frictional force is transmitted between the components.
  • the intermediate shaft has at least one receiving recess, which is provided for at least partially receiving a drive shaft.
  • the receiving recess is provided for receiving a drive shaft of a drive unit.
  • the receiving recess extends along an axis of rotation of the intermediate shaft.
  • the handheld power tool device has a drive unit with a drive shaft which is at least substantially aligned with the intermediate drive shaft. wave is aligned.
  • at least substantially aligned is intended to be understood in particular an alignment of the drive shaft and the intermediate shaft relative to each other, the drive shaft and the intermediate shaft, viewed along an axial direction of the drive shaft and / or the intermediate shaft are arranged at least substantially overlapping.
  • the drive unit has in particular at least one housingless electric motor.
  • the drive shaft is in particular at least partially formed by an armature shaft of the housing-less electric motor. In particular, in an assembled state, the drive shaft projects at least partially into the intermediate shaft, in particular into the receiving recess of the intermediate shaft.
  • the hand-held power tool device has, in particular, at least one
  • the bearing is at least partially disposed in a plane intersecting the intermediate shaft, which extends at least substantially perpendicular to the intermediate shaft.
  • substantially perpendicular is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in one plane, including an angle of 90 ° and the angle a maximum deviation of, in particular, less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.
  • the plane intersects both the intermediate shaft and the drive shaft at least substantially perpendicular.
  • the drive shaft is at least partially supported within the intermediate shaft.
  • the bearing is in particular at least partially, advantageously completely, disposed within the receiving recess.
  • the bearing is in particular at least partially designed as a rolling bearing, for example as a ball bearing, roller bearing or needle roller bearings.
  • the intermediate shaft has at least one sealing element receptacle.
  • the shaft sealing ring receptacle is arranged directly at an insertion opening of the receiving recess of the intermediate shaft, which is intended to introduce a drive shaft into the intermediate shaft.
  • the sealing element receptacle is provided in particular for at least partially receiving a sealing element, in particular a sealing ring and / or a shaft sealing ring.
  • the intermediate shaft has at least one sealing element arranged in the sealing element receptacle.
  • the sealing element is in particular designed as a shaft sealing ring, in particular as a radial shaft sealing ring.
  • the shaft sealing ring is provided, in particular, for the rotary impactor, in particular the Planetary gear of the rotary impact, at least substantially seal against an environment. As a result, an advantageously reliable sealing of the rotary impact mechanism can be achieved.
  • a hand tool in particular a rotary impact driver, proposed with at least one hand tool device according to the invention.
  • an advantageously compact hand tool in particular an advantageously compact impact wrench, can be provided.
  • the power tool may have an advantageously small overall length.
  • the hand-held power tool device according to the invention should not be limited to the application and embodiment described above.
  • the handheld power tool device according to the invention can have a number deviating from a number of individual elements, components and units mentioned herein.
  • FIG. 1 is a schematic partial sectional view of a hand tool machine which is designed as a rotary impact wrench
  • FIG. 2 is a sectional view of a hand tool device of the
  • FIG. 3 shows an intermediate shaft of the hand-held power tool device from FIG. 2 in a perspective view
  • 5 is a schematic representation of an introduction of Planetenradauf- measures in the intermediate shaft
  • 6 shows the hand tool in a frontal view
  • Fig. 8 is a sectional view of an alternative hand tool device.
  • Fig. 9 is a sectional view of another alternative hand tool device.
  • FIG. 1 shows a handheld power tool 34a, which is designed as a rotary impact driver, in a schematic partial sectional view.
  • the hand tool 34a is designed as a cordless impact driver.
  • the handheld power tool 34a comprises a handle 80 which extends perpendicular to a rotation axis 84a of a tool receptacle 86a of the handheld power tool 34a provided for receiving an insertion tool (not shown here).
  • the handle 80a comprises a battery receptacle 90a on a side 88a facing away from the hand tool machine 34a.
  • the battery holder 90a is provided to receive a battery unit 92a for supplying power to the portable power tool 34a.
  • the handheld power tool 34a has a handheld power tool device 10a with a drive unit 12a and a rotary impact mechanism 16a.
  • FIG. 2 shows the handheld power tool device 10 in a sectional view.
  • the hand-held power tool device 10a has a drive housing 72a and a striking mechanism housing 74a (see FIG.
  • the drive housing 72a encloses the drive unit 12a at least substantially completely.
  • the percussion mechanism housing 74a encloses the rotary impact mechanism 16a at least substantially completely (see Figure 1).
  • the drive unit 12a is designed as an electric drive unit which is supplied with electrical energy by the battery unit 92a.
  • the drive unit 12a has a housing-less electric motor 26a, which is provided to convert the electrical energy provided by the battery unit 92a into rotational energy.
  • the electric motor 26a is designed as an open-frame motor, in which components of the electric motor 26a are mounted individually in the drive housing 72a. Furthermore, the drive unit 12a has a drive shaft 14a, which is provided to transmit the rotational energy to the rotary impact mechanism 16a.
  • the drive shaft 14a is complete with an armature shaft 28a of the caseless electric motor 26a formed.
  • the armature shaft 28a is made in one piece.
  • the rotary impactor 16a is formed as a V-groove percussion.
  • the rotary impact mechanism 16a is intended to convert a continuous power output of the drive unit 12a into a pulsating angular momentum.
  • the power of the drive unit 12a is transmitted to the insert tool by a stroke of a hammer 96a of the rotary impactor 16a on a corresponding anvil 100a of an output spindle 15a by means of a pulse of high power intensity.
  • the anvil 100a is integrally formed with the output spindle 15a and the tool holder 86a in the illustrated embodiment.
  • the racket 96a is mounted such that an axial movement and radial movement is possible. The control of the axial movement is effected by V-shaped grooves 98 (see FIG. 3) and driving balls 97a (see FIG. A spring 138a provides for the return movement of the racket 96a.
  • the rotary impact mechanism 16a has an intermediate shaft 18a, which is aligned at least substantially in alignment with the drive shaft 14a. Furthermore, the
  • Hand machine tool device 10a at least one bearing 20a for supporting the drive shaft 14a.
  • the bearing 20a is at least partially disposed in a plane intersecting the intermediate shaft 18a plane 22a, which extends at least substantially perpendicular to the intermediate shaft 18a.
  • the drive shaft 14a is at least partially supported within the intermediate shaft 18a.
  • the intermediate shaft 18a has a receiving recess 24a, which is provided for at least partially receiving the drive shaft 14a.
  • the receiving recess 24a extends at least substantially along a rotational axis 108a of the intermediate shaft 18a.
  • the drive shaft 14a projects in an assembled state at least partially into the intermediate shaft 18a, in particular into the receiving recess 24a of the intermediate shaft
  • the bearing 20a for supporting the drive shaft 14a is disposed within the receiving recess 24a.
  • the bearing 20a for supporting the drive shaft 14a is formed as a rolling bearing.
  • the intermediate shaft 18a further has a sealing element receptacle 30a.
  • the sealing element receptacle 30a is arranged directly on an insertion opening 136a of the receiving recess 24a of the intermediate shaft 18a, which is provided to introduce the drive shaft 14a into the intermediate shaft 18a.
  • the intermediate shaft 18a has at least one sealing element 32a arranged in the sealing element receptacle 30a.
  • the sealing element 32a is designed as a shaft sealing ring, in particular as a radial shaft sealing ring, which in an assembled state is arranged between the drive shaft 14a and the intermediate shaft 18a. is orders.
  • the sealing element receptacle 30a is designed as a shaft sealing ring receptacle.
  • a further bearing 102a for supporting the drive shaft 14a is arranged on a side 104a of the electric motor 26a facing away from the tool holder 86a in the drive housing 72a.
  • the handheld power tool device 10a has a cooling air unit 36a, which comprises at least one fan wheel 38a arranged between the drive unit 12a and the rotary impact mechanism 16a.
  • the fan wheel 38a is provided in particular for generating a cooling air flow for cooling the rotary impact mechanism 16a and / or the drive unit 12a.
  • the fan 38a is rotatably mounted on the drive shaft
  • the drive unit 12a is provided to enable the fan wheel 38a during an operation of the power tool 34a in a rotational movement.
  • the fan wheel 38a and the rotary impact mechanism 16a overlap at least partially in the axial direction 40a.
  • the fan wheel 38a preferably projects beyond the rotary impact mechanism 16a at least partially in the axial direction 40a.
  • the fan 38a has a plurality of circumferentially arranged fan blades 1 10a, which engage over at least a portion of the rotary impact mechanism 16a in the circumferential direction.
  • the fan blades 1 10a extend at least substantially in the axial direction 40a.
  • the rotary impact mechanism 16a has at least one gear unit 42a designed as a single-stage planetary gear 50a.
  • the gear unit 42a may be formed as a multi-stage planetary gear. Preferably, these overlap
  • the planetary gear 50a comprises at least one ring gear 46a.
  • the rotary impact mechanism 16a includes a striking mechanism cover 44a.
  • the striking mechanism cover 44a is disposed between the drive unit 12a and the planetary gear 50a.
  • the striking mechanism cover 44a is provided for the rotary impact mechanism
  • the impact mechanism cover 44a has a feedthrough recess 106a, which is provided for at least partial passage of at least the drive shaft 14a.
  • the striking mechanism cover 44a is formed integrally with the ring gear 46a.
  • the striking mechanism cover 44a and the ring gear 46a consist at least substantially of - Kl a metallic material, in particular of a metallic sintered material.
  • the fan wheel 38a and at least the striking mechanism cover 44a preferably overlap at least partially in the axial direction 40a.
  • the handheld power tool device 10 further includes an intermediate shaft bearing 48a for supporting the intermediate shaft 18a.
  • the intermediate shaft bearing 48a is formed as a rolling bearing.
  • the intermediate shaft bearing 48a may be formed as a sliding bearing.
  • the intermediate shaft bearing 48a is formed as a radial bearing which is provided to rotatably support the intermediate shaft 18a in the hammer plate 44a.
  • the intermediate shaft bearing 48a is at least partially within one
  • the intermediate shaft bearing 48a is disposed directly on the feedthrough recess 106a of the striking mechanism cover 44a.
  • the intermediate shaft bearing 48a is arranged on the tool holder 86a facing side of the striking mechanism cover 44a.
  • the Schlagtechnikde- disgust 44a has at least one bearing receptacle 52a, which to a receptacle of the
  • the bearing receptacle 52a is formed integrally with the striking mechanism cover 44a.
  • the bearing receiver 52a is arranged in the region of the feedthrough recess 106a of the striking mechanism cover 44a.
  • the bearing receptacle 52a is at least substantially hollow cylindrical.
  • the bearing receptacle 52a has an at least substantially annular stop element 12a for the intermediate shaft bearing 48a on an end remote from the striking mechanism cover 44a.
  • the stop element 1 12a is formed integrally with the bearing receptacle 52a.
  • An inner diameter of the bearing receptacle 52a corresponds at least substantially to an outer diameter of the intermediate shaft bearing 48a.
  • the intermediate shaft bearing 48a is fixed by a press fit in the bearing receptacle 52a.
  • the fan wheel 38a and at least the intermediate shaft bearing 48a and / or the intermediate shaft 18a preferably overlap at least partially in the axial direction 40a.
  • Figure 3 shows the intermediate shaft 18a in a perspective view.
  • FIG. 4 shows the intermediate shaft 18a in a sectional view along the sectional plane III-III.
  • the intermediate shaft 18a is formed as a planet carrier 94a of the planetary gear 50a.
  • the intermediate shaft 18a has a circumferentially arranged plurality of Planetenradabilityn 54a, 56a, 58a and Planetenradlagerstellen 60a, 62a, 64a.
  • each Planetenradage 54 a, 56 a, 58 a is in each case a planetary gear 130 a ange- which is rotatably supported by a pin 132a.
  • the intermediate shaft 18a has at least one material recess 66a, 68a, 70a on its outer circumference, at least in the region of at least one planet wheel bearing point 60a, 62a, 64a.
  • a number of material recesses 66a, 68a, 70a correspond to a number of planetary wheel receivers 54a, 56a, 58a.
  • Each Planetenradability 54a, 56a, 58a is associated with exactly one material recess 66a, 68a, 70a.
  • the intermediate shaft 18a has three Planetenradabilityn 54a, 56a, 58a, each with a Planetenradlagerstelle 60a, 62a, 64a.
  • the Planetenradlagerstellen 60a, 62a, 64a are arranged at least substantially offset by 120 ° to each other in the circumferential direction of the intermediate shaft 18a.
  • the Planetenradingn 54a, 56a, 58a are separated by radially to a longitudinal direction 122a of the intermediate shaft 18a extending webs 124a.
  • the planetary wheel receivers 54a, 56a, 58a are delimited by two disk-shaped wall elements 126a, 128a, which are arranged at least substantially perpendicular to the longitudinal extension direction 122a.
  • the wall elements 126a, 128a are at least substantially circular.
  • the wall elements 126a, 128a are formed integrally with the intermediate shaft 18a.
  • the material recesses 66a, 68a, 70a are at least substantially circular segment-shaped.
  • the Planetenradingn 54a, 56a, 58a are at least substantially cylindrical segment-shaped.
  • the material recesses 66a, 68a, 70a are introduced into one of the wall elements 126a, 128a.
  • the material recess 66a, 68a, 70a are introduced into the wall element 126a, which is arranged in a mounted state of the intermediate shaft 18a in the direction of a drive unit 12a.
  • the wall elements 126a, 128a have an at least substantially identical radius. Alternatively, one of the wall elements 126a, 128a may have a smaller radius.
  • the material recesses 66a, 68a, 70a are provided during a production of the intermediate shaft 18a for a temporary at least partial reception of a milling head spindle 78a (see FIG.
  • the Planetenradabilityn 54 a, 56 a, 58 a are introduced by means of a disk cutter 134 a in a blank of the intermediate shaft 18 a.
  • a milling head spindle 78a of the disk milling cutter 134a is at least partially inserted into a material recess 66a, 68a, 70a.
  • the Planetenradingn 54 a, 56 a, 58 a in a common process step, at least substantially temporally Immediately in the intermediate shaft 18a, in particular by means of a plurality of identical side-milling cutter 134a introduced.
  • the side milling cutters 134a are brought to the intermediate shaft 18a in such a way that the milling head spindles 78a extend at all times at least substantially parallel to a longitudinal direction 122a of the intermediate shaft 18a.
  • FIG. 6 shows the handheld power tool 34a in a frontal view.
  • FIG. 7 shows a sectional illustration of the handheld power tool 34a along the section line VI-VI.
  • the ring gear 46 a of the planetary gear 50 a is clamped between the drive housing 72 a and the striking mechanism housing 74 a.
  • the drive housing 72a and the percussion mechanism housing 74a have a clamping surface 1 14a, which abut in an assembled state respectively from opposite sides on at least one surface 1 16a of the ring gear 46a and each exert a clamping force on the ring gear 46a.
  • the ring gear 46a is fixed to the drive housing 72a by means of at least one screw element 76a, preferably by means of at least one screw.
  • the screw 46a is fixed by way of example with four screw elements 76a.
  • the ring gear 46a has on an outer circumference recesses 1 18a, which are provided for passing the screw 76a.
  • the drive housing 72a has a number of screw holes 76a corresponding to the number of screw elements 120a, which corresponds to a thread of the screw elements 76a
  • the drive housing 72a, the impactor housing 74a and the ring gear 46a are interconnected in an assembled state by means of the screw members 76a, wherein the ring gear 46a is disposed between the drive housing 72a and the striking mechanism housing 74a.
  • the ring gear 46a may be fixed to the percussion mechanism housing 74a by means of at least one screw element 76a.
  • FIG. 8 shows an alternative embodiment of the handheld power tool device 10b in a sectional representation.
  • the handheld power tool device 10b has a drive unit 12b and a rotary impact mechanism 16b with a planetary gear 50b.
  • the drive unit 12b has a housing-less electric motor 26b, which is intended to convert electrical energy into rotational energy.
  • the electric motor 26b is designed as an open-frame motor.
  • the drive unit 12b has a drive shaft 14b, which is intended to transmit the rotational energy to the rotary impact mechanism 16b.
  • the drive shaft 14b is partially formed by an armature shaft 28b of the housingless electric motor 26b.
  • the rotary impact mechanism 16b has an intermediate shaft 18b, which is aligned at least substantially in alignment with the drive shaft 14b. Furthermore, the handheld power tool device 10b has at least one bearing 20b for supporting the drive shaft 14b.
  • the drive shaft 14b is at least partially supported within the intermediate shaft 18b.
  • the intermediate shaft 18b has a receiving recess 24b, which is provided for at least partially receiving the drive shaft 14b.
  • the bearing 20b is arranged directly on an insertion opening 136b of the receiving recess 24b of the intermediate shaft 18b, which is intended to introduce the drive shaft 14b into the intermediate shaft 18b.
  • the bearing 20b for supporting the drive shaft 14b is arranged on a side of the planetary gear 50b facing the drive unit 12b.
  • the bearing 20b is formed as a roller bearing.
  • FIG. 9 shows a further alternative embodiment of the handheld power tool device 10c in a sectional representation.
  • the hand-held power tool device 10c has a drive unit 12c and a rotary impact mechanism 16c with a planetary gear 50c.
  • the drive unit 12c has a housing-less electric motor 26c, which is intended to convert electrical energy into rotational energy.
  • the electric motor 26c is designed as an open-frame motor.
  • the drive unit 12c has a drive shaft 14b, which is provided to transmit the rotational energy to the rotary impact mechanism 16c.
  • the drive shaft 14c is partially formed by an armature shaft 28c of the housingless electric motor 26c.
  • the rotary impact mechanism 16c has an intermediate shaft 18c, which is aligned at least substantially in alignment with the drive shaft 14c. Furthermore, the Hand machine tool device 10c at least one bearing 20c for supporting the drive shaft 14c.
  • the drive shaft 14c is at least partially supported within the intermediate shaft 18c.
  • the intermediate shaft 18c has a receiving recess 24c, which is provided for at least partially receiving the drive shaft 14c.
  • the bearing 20c is arranged directly on an insertion opening 136c of the receiving recess 24c of the intermediate shaft 18c, which is intended to introduce the drive shaft 14c into the intermediate shaft 18c.
  • the bearing 20c for supporting the drive shaft 14c is arranged on a side of the planetary gear 50c facing the drive unit 12c.
  • the bearing 20c is formed as a ball bearing.
  • the portable power tool apparatus 10c has a sealing ring 140c which circumferentially surrounds the bearing 20c and which is disposed between the bearing 20c and an inner diameter receiving recess 24c of the intermediate shaft 18c.
  • the intermediate shaft 18c has a groove 142c, which is provided for receiving the sealing ring 140c.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Retarders (AREA)

Abstract

L'invention concerne un système de machine-outil portative comprenant au moins un mécanisme de percussion rotatif (16a; 16b; 16c) comportant au moins une boîte de vitesses à trains épicycloïdaux (50a; 50b; 50c) pourvue d'au moins une couronne (46a; 46b; 46c), au moins un couvercle de mécanisme de percussion (44a; 44b; 44c) et au moins un arbre intermédiaire (18a; 18b; 18c) monté au moins partiellement à l'intérieur du couvercle de mécanisme de percussion (44a; 44b; 44c). Selon l'invention, le couvercle de mécanisme de percussion (44a; 44b; 44c) forme une seule pièce avec la couronne (46a; 46b; 46c).
PCT/EP2017/067401 2016-07-11 2017-07-11 Système de machine-outil portative Ceased WO2018011206A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17737586.2A EP3481590B1 (fr) 2016-07-11 2017-07-11 Système de machine-outil portative

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102016212596.6 2016-07-11
DE102016212596 2016-07-11
DE102017211778.8A DE102017211778A1 (de) 2016-07-11 2017-07-10 Handwerkzeugmaschinenvorrichtung
DE102017211778.8 2017-07-10

Publications (1)

Publication Number Publication Date
WO2018011206A1 true WO2018011206A1 (fr) 2018-01-18

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ID=60676435

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/067401 Ceased WO2018011206A1 (fr) 2016-07-11 2017-07-11 Système de machine-outil portative

Country Status (3)

Country Link
EP (1) EP3481590B1 (fr)
DE (1) DE102017211778A1 (fr)
WO (1) WO2018011206A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12263563B2 (en) 2022-06-16 2025-04-01 Milwaukee Electric Tool Corporation Compact impact tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US3166168A (en) * 1961-04-10 1965-01-19 Ingersoll Rand Co Impact tool torsion bar
US3369615A (en) * 1966-05-27 1968-02-20 Black & Decker Mfg Co Impact wrench
EP0570889A1 (fr) * 1992-05-18 1993-11-24 Snap-On Tools Corporation Train d'engrenage en plastique pour outil motorisé
EP2813325A2 (fr) * 2013-06-12 2014-12-17 Panasonic Corporation Clé à chocs

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