EP3792005B1 - Machine-outil portative dotée d'une bride de réducteur - Google Patents

Machine-outil portative dotée d'une bride de réducteur Download PDF

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Publication number
EP3792005B1
EP3792005B1 EP20190833.2A EP20190833A EP3792005B1 EP 3792005 B1 EP3792005 B1 EP 3792005B1 EP 20190833 A EP20190833 A EP 20190833A EP 3792005 B1 EP3792005 B1 EP 3792005B1
Authority
EP
European Patent Office
Prior art keywords
drive
hand
power tool
held power
receiving
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.)
Active
Application number
EP20190833.2A
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German (de)
English (en)
Other versions
EP3792005A1 (fr
Inventor
Simon Erbele
Christian Lang
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
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Filing date
Publication date
Priority claimed from DE102020208347.9A external-priority patent/DE102020208347A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3792005A1 publication Critical patent/EP3792005A1/fr
Application granted granted Critical
Publication of EP3792005B1 publication Critical patent/EP3792005B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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

Definitions

  • Such a hand-held power tool with a housing in which a gear unit and an electronically commutated drive motor are arranged is known from the prior art.
  • the transmission unit is assigned a drive-side transmission flange that closes the transmission unit.
  • the gear flange is arranged at a distance from the drive motor in the axial direction of the gear unit.
  • Webs are preferably provided which are designed to form the at least one receiving element assigned to the receiving area. A robust and stable receiving area can thus be formed.
  • the at least one receiving element assigned to the receiving area is designed as a recess. So can easily and reliably the receiving area can be formed.
  • the drive-side transmission flange preferably has at its first axial end a first bearing area for arranging a first bearing element and has a second bearing area spaced apart from the first bearing area for arranging a second bearing element.
  • the hand-held power tool is preferably designed as a rotary impact wrench with an impact mechanism, the impact mechanism being assigned to the gear unit.
  • the hammer mechanism can be arranged, at least in sections, in the transmission flange in a simple and uncomplicated manner.
  • the at least one motor component is an anti-twist bar, which is assigned to the drive motor and is configured in the longitudinal direction of the drive motor.
  • a nested arrangement of the drive motor and the anti-rotation web can thus be made possible in a simple and uncomplicated manner, with the anti-rotation web being able to prevent rotation of the stator during operation of the drive motor, so that an anti-rotation lock can be provided in a simple and uncomplicated manner.
  • the transmission flange has a recess assigned to the at least one anti-rotation web, in order to allow the at least one anti-rotation web to penetrate into the transmission flange.
  • a compact arrangement of the motor component and the transmission flange can thus be made possible, with the anti-rotation bar serving to form an anti-rotation lock for the stator of the drive motor.
  • a drive unit 127 with a first axial end 101 and an opposite second axial end 102 is preferably arranged in the housing 105 .
  • the two axial ends 101, 102 define an axial direction of the drive unit 127, which is parallel to a longitudinal extent or a longitudinal direction (208 in 2 ) of the drive unit 127 runs.
  • Drive unit 127 has at least one gear unit 125 and an electric drive motor 180, which is preferably supplied with power by battery pack 190.
  • Gear unit 125 is preferably arranged facing second axial end 102 and drive motor 180 is arranged facing first axial end 101 .
  • At least one gear 120 is preferably assigned to the gear unit 125 .
  • the hand-held power tool 100 is designed as a rotary impact wrench with an impact mechanism 150 .
  • the hammer mechanism 150 is associated with the gear unit 125 .
  • the present invention is not limited to rotary impact wrenches, but can be used in general with different handheld power tools with and without impact mechanism 150 that have a drive motor and a gear unit, e.g. in cordless drills.
  • the drive motor 180 can be switched on and off using a manual switch 195, for example.
  • the drive motor 180 is preferably designed as an electronically commutated motor 185 .
  • a tool holder 140 for receiving an insert tool e.g. a screwdriver bit, is assigned to the second axial end 102 of the hand-held power tool 100 .
  • the drive motor 180 is preferably designed to drive the tool holder 140 and thus the application tool.
  • a fan 130 is preferably provided.
  • the fan 130 is arranged at the first axial end 101 by way of illustration and example, but it can also be arranged at any other point in the housing 105 .
  • the hand-held power tool 100 can also be configured without a fan 130 .
  • a transmission flange 230 on the drive side is preferably assigned to the transmission unit 125 .
  • the transmission flange 230 is designed to close the transmission unit 125 at least in sections.
  • the transmission flange 230 is mounted on the drive shaft 215 via a bearing element 292 at its end facing the first axial end 101 .
  • the end of the drive shaft 215 facing the second axial end 102 is connected to an output shaft 299 via the transmission unit 125 .
  • An end of the output shaft 299 facing the first axial end 101 is mounted in the transmission flange 230 via a bearing element 290 .
  • the output shaft 299 is designed to drive the tool holder 140 .
  • Gear 120 assigned to gear unit 125 is preferably designed as a planetary gear.
  • a ring gear 294 assigned to the planetary gear is arranged in the gear flange 230 .
  • the transmission flange 230 has an interior receptacle 248 for this purpose.
  • the drive-side transmission flange 230 has a receiving area 236 on its end face 241 facing the stator.
  • the receiving area 236 is preferably designed to receive the stator 211 at least in sections.
  • the recording area is 236 embodied for at least partially accommodating at least one motor component 280 assigned to the stator 211.
  • the at least one motor component 280 is arranged between the drive motor 180 and the transmission unit 125, in particular a transmission flange 230.
  • the at least one motor component 280 is assigned to the drive motor 180, in particular fastened to the drive motor 180 on the output side.
  • the at least one motor component 280 is designed as a mechanical motor component, e.g. as an anti-rotation bar (1110 in 12 and 12 ) of the stator 211 of the drive motor 180, as an electromechanical motor component, for example as a motor terminal (811, 812 in 8 ), and/or as an electrical motor component, e.g. as an electronic circuit board, ie as a circuit board with electronic components (910 in 9 ), educated.
  • the interior receptacle 248 of the transmission flange 230 is preferably designed to accommodate the transmission unit 125 .
  • an output-side end face 249 of the receiving area 236 of the transmission flange 230 preferably has receptacles (610 in 6 ), whereby the ring gear 294 of the transmission unit 125 is partially in the mounts (610 in 6 ) is arranged.
  • the receiving area 236 has at least one receiving element (499 in 4 and figure 5 ) in the circumferential direction 209 of the drive-side transmission flange 230 for accommodating at least one motor component 280 .
  • the at least one receiving element (499 in 4 and figure 5 ) designed in such a way that the at least one motor component 280 protrudes beyond bearing elements 290, 292 for supporting the drive-side transmission flange 230 in the longitudinal direction 208 of the drive unit 127.
  • the transmission flange 410 has a first axial end 401, which is arranged facing the first axial end 101 of the drive unit 127 . Furthermore, the transmission flange 410 has a second axial end 402 opposite the first axial end 401 . At the second axial end 402 the transmission flange 410 has at least one, illustratively three and preferably four retaining flanges 412 for arrangement in the housing 105 .
  • the transmission flange 410 has a first bearing area 414 for arranging the first bearing element 292 .
  • a second bearing area 415 for arranging the second bearing element 290 is arranged at a distance from the first bearing area 414 .
  • the first bearing area 414 preferably has a first outer diameter and the second bearing area 415 has a second outer diameter.
  • the second outside diameter is larger than the first outside diameter.
  • the first bearing area 414 widens in the direction of the second axial end 402 of the transmission flange 410 into the second bearing area 415 .
  • the second bearing area 415 widens in the direction of the second axial end 402 of the transmission flange 410 into a receiving area 416 .
  • the receiving area 416 has a larger outside diameter than the second bearing area 415 .
  • the transmission flange 410 has at least one, illustratively eight, longitudinal webs 430.
  • the longitudinal webs 430 connect an outer diameter or outer circumference of the receiving area 416 to the storage area 415 and to the storage area 414.
  • the illustrative eight longitudinal webs 430 have a triangular base body, for example.
  • the transmission flange 410 can have any number of longitudinal webs 430 .
  • different longitudinal webs 430 can also be formed, ie for example one longitudinal web connects the receiving area 416 and the second storage area 415 to one another and another longitudinal web connects the second storage area 415 to the first storage area 414 .
  • the different longitudinal webs can have any shape.
  • FIG 5 shows the transmission flange 230 of FIG 3 , which is designed according to a further embodiment and is therefore referred to below as transmission flange 510.
  • the transmission flange 510 has a first axial end 501 which is arranged facing the first axial end 101 of the drive unit 127 . Furthermore, the transmission flange 510 has a second axial end 502 opposite the first axial end 501 . Analogous to the gear flange 410 from 4 the transmission flange 510 has the retaining flanges 412 and the receiving area 416 and the first and second bearing areas 414 and 415 .
  • the receiving elements 499 of the transmission flange 510 are preferably designed as recesses 530 .
  • FIG. 6 shows the transmission flange 510 of FIG figure 5 viewed from its second axial end 502 . This makes it clear 6 the receiving area 416 or the inner receptacle 248 of the transmission flange 230 or 510.
  • the interior receptacle 248 is designed for arranging the transmission unit 125, with an output-side end face 249 of the receiving area 236 of the transmission flange 230 or 510 forming the anti-twist device for the ring gear 294 of the transmission unit 125, in particular of the transmission 120.
  • the recesses 530 preferably form receptacles 610 on the output-side end face 249 of the receptacle region 236 .
  • FIG 7 shows the transmission flange 510 of FIG figure 5 and 6 with the ring gear 294 of the transmission unit 125, as well as the first and second bearing element 290, 292.
  • the bearing element 292 is preferably and illustratively arranged in the first bearing region 414.
  • the bearing element 290 is arranged in the second bearing area 415 .
  • ring gear 294 is arranged on end face 249 of receiving area 236 .
  • ring gear 294 is configured with the at least one axial extension land (1090 in 11 ) arranged in the receptacles 610, whereby the anti-twist device is created.
  • the drive unit 8 shows the drive unit 127 with the drive motor 180 and the gear flange 230 or 510 from FIG Figures 5 to 7 .
  • the at least one motor component 811, 812 assigned to the stator 211 is arranged at least in sections in the receiving element 499, embodied as a recess 530, of the transmission flange 510 or 230.
  • the at least one motor component 811, 812 is illustratively and preferably designed as a motor terminal. However, it is pointed out that the at least one motor component 811, 812 can also be in the form of any other part, in particular an electrical part, of the drive motor 180.
  • a motor terminal 811, 812 is arranged in each of the receiving elements 499 designed as recesses 530.
  • the drive motor 180 preferably has a plurality of motor components 811, 812 or motor terminals, which can be arranged in the receiving elements 499.
  • the transmission flange 230 can have a number of receiving elements 499 in 4 or in Figures 5 to 7 exhibit.
  • the drive motor 180 can have any number of motor components 811, 812 and the gear flange 230 can have a different number of receiving elements 499 in 4 or in Figures 5 to 7 exhibit.
  • a motor component does not have to be arranged in each receiving element 499 .
  • Ring gear 294 is arranged in sections in receptacles 610 of transmission flange 230.
  • the ring gear 294 has at least one axial expansion web 1090 in the axial direction or in the longitudinal direction 208 of the drive unit 127, which in 11 is arranged in the receptacles 610.
  • Ring gear 294 of gear 120 is secured against rotation in gear flange 230 .
  • 13 shows the drive motor 185, the gear flange 230 and the end cap 1100 of FIG 12 . This makes it clear 13 shows an exemplary web 1210 assigned to the housing 105 for positioning the transmission flange 230 in the housing 105.
  • FIG 13 the anti-rotation bar 1110 arranged in the receiving element 499.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (15)

  1. Machine-outil portative (100) avec un logement d'outil (140) et un boîtier (105), dans lequel sont agencés au moins une unité de transmission (125) ainsi qu'un moteur d'entraînement à commutation électronique (185) avec un stator (211) et un rotor (212) pour l'entraînement d'un outil d'insertion pouvant être agencé dans le logement d'outil (140), le moteur d'entraînement à commutation électrique (185) étant monté dans le boîtier (105) par l'intermédiaire d'un arbre d'entraînement (215), une bride de transmission côté entraînement (230) étant associée à l'unité de transmission (125), laquelle ferme l'unité de transmission (125) au moins par sections, la bride de transmission côté entraînement (230) présentant, sur son côté frontal (241) tourné vers le stator (211), une zone de réception (236) pour recevoir, au moins par sections, au moins un composant de moteur (811, 812) associé au stator (211), caractérisée en ce que la bride de transmission côté entraînement (230) présente un premier élément de palier (292), la bride de transmission côté entraînement (230) étant montée sur l'arbre d'entraînement (215) par l'intermédiaire du premier élément de palier (292) et le premier élément de palier (292) étant agencé radialement par rapport à l'arbre d'entraînement (215) entre l'arbre d'entraînement (215) et la zone de réception (236).
  2. Machine-outil portative selon la revendication 1, caractérisée en ce que la zone de réception (236) présente au moins un élément de réception (499) dans la direction circonférentielle (209) de la bride de transmission côté entraînement (230) pour recevoir l'au moins un composant de moteur (811, 812).
  3. Machine-outil portative selon la revendication 2, caractérisée en ce que des entretoises (430) sont prévues, qui sont réalisées pour réaliser l'au moins un élément de réception (499) associé à la zone de réception (236) .
  4. Machine-outil portative selon la revendication 2, caractérisée en ce que l'au moins un élément de réception (499) associé à la zone de réception (236) est réalisé sous forme d'évidement (530).
  5. Machine-outil portative selon l'une quelconque des revendications 2 à 4, caractérisée en ce que l'au moins un élément de réception (499) est réalisé pour recevoir, au moins par sections, l'au moins un composant de moteur (811, 812) associé au stator (211), de préférence pour recevoir des terminaux de moteur (811, 812).
  6. Machine-outil portative selon la revendication 5, caractérisée en ce que l'au moins un élément de réception (499) est réalisé de telle sorte que l'au moins un composant de moteur (811, 812) dépasse des éléments de palier (290, 292) pour le montage de la bride de transmission côté entraînement (230) dans la direction longitudinale (208) du moteur d'entraînement (185).
  7. Machine-outil portative selon l'une quelconque des revendications précédentes, caractérisée en ce que la bride de transmission côté entraînement (230) présente, à sa première extrémité axiale (401), une première zone de montage (414) pour l'agencement du premier élément de palier (292) et une deuxième zone de montage (415) espacée de la première zone de montage (414) pour l'agencement d'un deuxième élément de palier (290).
  8. Machine-outil portative selon la revendication 7, caractérisée en ce que la première zone de montage (414) présente un premier diamètre extérieur et la deuxième zone de montage (415) présente un deuxième diamètre extérieur supérieur au premier diamètre extérieur.
  9. Machine-outil portative selon l'une quelconque des revendications précédentes, caractérisée en ce que la bride de transmission (230) présente un logement intérieur (248) pour l'agencement de l'unité de transmission (125), un côté frontal côté sortie (249) de la zone de réception (236) de la bride de transmission (230) présentant des logements (610), la couronne (294) de l'unité de transmission (125) étant agencée par sections dans les logements (610) pour réaliser un blocage en rotation.
  10. Machine-outil portative selon l'une quelconque des revendications précédentes, qui est réalisée sous forme de visseuse à percussion rotative avec un mécanisme de percussion (150), le mécanisme de percussion (150) étant associé à l'unité de transmission (125).
  11. Machine-outil portative selon l'une quelconque des revendications précédentes, caractérisée en ce que l'au moins un composant de moteur (910) est une platine (910), associée au moteur d'entraînement (185), avec des composants électroniques (912).
  12. Machine-outil portative selon l'une quelconque des revendications 1 à 10, caractérisée en ce que l'au moins un composant de moteur (1110) est une entretoise de blocage en rotation (1110) associée au moteur d'entraînement (185), réalisée dans la direction longitudinale (208) du moteur d'entraînement (185).
  13. Machine-outil portative selon la revendication 12, caractérisée en ce que la bride de transmission (230) présente un évidement (1310) associé à l'au moins une entretoise de blocage en rotation (1110) afin de permettre une pénétration de l'au moins une entretoise de blocage en rotation (1110) dans la bride de transmission (230).
  14. Machine-outil portative selon la revendication 7 ou 8, caractérisée en ce que la première zone de montage (414) est agencée radialement par rapport à l'arbre d'entraînement (215) entre l'arbre d'entraînement (215) et la zone de réception (236).
  15. Machine-outil portative selon l'une quelconque des revendications précédentes, caractérisée en ce que le côté frontal (241) de la bride de transmission (230) tourné vers le stator (211) est agencé radialement par rapport à l'arbre d'entraînement (215) entre l'arbre d'entraînement (215), notamment le premier élément de palier (292), et la zone de réception (236).
EP20190833.2A 2019-09-11 2020-08-13 Machine-outil portative dotée d'une bride de réducteur Active EP3792005B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019213795 2019-09-11
DE102020208347.9A DE102020208347A1 (de) 2019-09-11 2020-07-03 Handwerkzeugmaschine mit einem Getriebeflansch

Publications (2)

Publication Number Publication Date
EP3792005A1 EP3792005A1 (fr) 2021-03-17
EP3792005B1 true EP3792005B1 (fr) 2023-06-07

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ID=72086707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20190833.2A Active EP3792005B1 (fr) 2019-09-11 2020-08-13 Machine-outil portative dotée d'une bride de réducteur

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EP (1) EP3792005B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9101335A (nl) * 1991-08-02 1993-03-01 Emerson Electric Co Transmissie voor elektrisch aangedreven gereedschap.
US6672402B2 (en) * 2001-12-27 2004-01-06 Black & Decker Inc. Combined fastenerless motor end cap and output device mounting
DE602007012739D1 (de) * 2007-12-28 2011-04-07 Bosch Gmbh Robert Drehkraftwerkzeug mit einer Schnittstelle zwischen dem Motor und dem Getriebe, die die Montage vereinfacht
DE102016225114A1 (de) * 2015-12-16 2017-06-22 Robert Bosch Gmbh Werkzeugbasismodul

Also Published As

Publication number Publication date
EP3792005A1 (fr) 2021-03-17

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