EP2894009A1 - Machine-outil portative - Google Patents

Machine-outil portative Download PDF

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Publication number
EP2894009A1
EP2894009A1 EP14150627.9A EP14150627A EP2894009A1 EP 2894009 A1 EP2894009 A1 EP 2894009A1 EP 14150627 A EP14150627 A EP 14150627A EP 2894009 A1 EP2894009 A1 EP 2894009A1
Authority
EP
European Patent Office
Prior art keywords
actuating sleeve
axis
tool holder
locking
locking bodies
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Withdrawn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
EP14150627.9A
Other languages
German (de)
English (en)
Inventor
Pierre Pallmer
Udo Hauptmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Priority to EP14150627.9A priority Critical patent/EP2894009A1/fr
Publication of EP2894009A1 publication Critical patent/EP2894009A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • 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
    • B25D2250/365—Use of seals

Definitions

  • the present invention relates to a tool holder for a hand-held machine tool, such as from US 2011 049817 A known.
  • the tool holder for a hand-held machine tool has a tubular base body which has a receiving space which is coaxial with an axis for receiving a drill.
  • One or more locking bodies lie in lateral openings of the base body and protrude partially into the receiving space.
  • An actuating sleeve is movable along the axis between a base position for locking the locking bodies and a release position for releasing a radial movement of the locking bodies.
  • a parallel to the axis arranged clamping device is clamped between the actuating sleeve and a stationary relative to the housing stop to bias the actuating sleeve biased to the normal position.
  • the tensioning device has a helical spring and a flexible hose surrounding the main body circumferentially.
  • the coil spring presses one end of the flexible tube against the actuator sleeve and another end of the flexible tube against the stopper.
  • the clamping device also serves as a seal against dust.
  • Fig. 1 shows as an example of a chiseling hand tool machine schematically a combination hammer 1.
  • the combination hammer 1 has a tool holder 2, in which a shank end 3 of a tool, such as one of the drill 4, can be used.
  • a primary drive of the combihammer 1 is a motor 5, which drives a hammer mechanism 6 and an output shaft 7 .
  • a user can cause the combination hammer 1 by means of a handle 8 and take means of a system switch 9, the combination hammer 1 is in operation.
  • the combination hammer 1 rotates the drill 4 continuously about a working axis 10 and can beat the drill 4 in the direction of impact 11 along the working axis 10 in a substrate.
  • the striking mechanism 6 is preferably a motor-driven pneumatic percussion 6.
  • a racket 12 is coupled via an air spring 13 to one of the motor 5 along a working axis 10 reciprocating piston 14 .
  • the racket 12 strikes directly or indirectly by an anvil 15 on the shaft end 3.
  • the motor 5, the striking mechanism 6 are arranged in a housing 16 to which the handle 8 is attached.
  • the tool holder 2 is shown in detail in FIG Fig. 2 shown in a longitudinal section.
  • the tool holder 2 has a driven by the output shaft 7 hollow spindle 17 (body) with a receiving space 18 for the tool 4.
  • the drill 4 can be inserted through an output-side opening 19 in the insertion direction (counter to the direction of impact 11 ) in the receiving space 18 .
  • the receiving space 18 is preferably complementary to the shaft end 3, for example cylindrical.
  • the pawls 20 are inserted into slots 21 in a wall of the hollow spindle 17 .
  • a radial inhibition of the pawls 20 takes place by means of a locking ring 22, on which the pawls 20 partially project radially into the receiving space 18 from the inside.
  • the protruding into the receiving space 18 part of the pawls 20 can engage in the locking groove of the drill 4 .
  • a spring-loaded actuating sleeve 23 holds the pawls 20 within the locking ring 22, ie axially overlapping with the locking ring 22 .
  • the user can move the actuating sleeve 23 by hand against the coil spring 24 to cancel the radial inhibition of the pawls 20 .
  • the actuating sleeve 23 has a hollow cylindrical handle portion 25, which the user can grip directly.
  • the handle portion 25 overlaps along the working axis 10 with a likewise largely cylindrical neck portion 26 of the outer housing of Kombihammers 1.
  • the neck portion 26 is located in the combi hammer 1 in the direction of impact 11 in front of the actuating sleeve 23.
  • the actuating sleeve 23 can along the working axis 10 in the direction of actuation 27 to the Neck section 26 are moved.
  • the actuating sleeve 23 is guided, for example, by the hollow spindle 17.
  • the actuating sleeve 23 has an annular foot 28 which rests on the spindle 17 .
  • a guide of the actuating sleeve 23 through the neck portion 26 is preferably not provided.
  • the actuating sleeve 23 and the neck portion 26 separates a radial gap 29.
  • the actuating sleeve 23 is by a clamping device 30 in the basic position (in Fig. 2 pictured).
  • the tensioning device 30 has a helical spring 24.
  • the helical spring 24 is supported in the actuating direction 27 on a stationary stop 31 in the housing 16 and against the actuating direction 27 on the actuating sleeve 23 .
  • the coil spring 24 is under a bias.
  • the coil spring 24 is arranged substantially coaxially with the working axis 10 .
  • the tensioning device 30 has a hose 32, which surrounds the coil spring 24 .
  • the tube 32 is, for example, a film made of polyethylene, polypropylene or another soft at room temperature plastic.
  • the tube 32 is clamped by the coil spring 24 and is correspondingly on the housing 16 and the actuating sleeve 23 at.
  • the clamping device 30 may be provided on the end faces in each case with a sealing ring 33.
  • the tube 32 may comprise a braided or woven textile.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP14150627.9A 2014-01-09 2014-01-09 Machine-outil portative Withdrawn EP2894009A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14150627.9A EP2894009A1 (fr) 2014-01-09 2014-01-09 Machine-outil portative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14150627.9A EP2894009A1 (fr) 2014-01-09 2014-01-09 Machine-outil portative

Publications (1)

Publication Number Publication Date
EP2894009A1 true EP2894009A1 (fr) 2015-07-15

Family

ID=49911427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14150627.9A Withdrawn EP2894009A1 (fr) 2014-01-09 2014-01-09 Machine-outil portative

Country Status (1)

Country Link
EP (1) EP2894009A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4063048A1 (fr) 2021-03-26 2022-09-28 Robert Bosch GmbH Machine-outil à main dotée d'un dispositif de verrouillage
EP4063076A1 (fr) 2021-03-26 2022-09-28 Robert Bosch GmbH Machine-outil à main dotée d'un dispositif de verrouillage
WO2022199931A1 (fr) 2021-03-26 2022-09-29 Robert Bosch Gmbh Machine-outil portative comprenant un dispositif de verrouillage
WO2022199929A1 (fr) 2021-03-26 2022-09-29 Robert Bosch Gmbh Outil électrique portatif comprenant un dispositif de verrouillage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR729138A (fr) * 1931-12-31 1932-07-19 Dispositif d'étanchéité et de retenue du décaleur ou manchon porteoutil sur les marteaux pneumatiques
EP1252000B1 (fr) * 2000-01-22 2004-03-31 Robert Bosch Gmbh Machine portable
EP2062698A1 (fr) * 2007-11-23 2009-05-27 HILTI Aktiengesellschaft Machine-outil manuelle dotée d'une réception d'outil de percussion et outil correspondant
US20110049817A1 (en) 2009-08-26 2011-03-03 Hilti Aktiengesellschaft Tool holder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR729138A (fr) * 1931-12-31 1932-07-19 Dispositif d'étanchéité et de retenue du décaleur ou manchon porteoutil sur les marteaux pneumatiques
EP1252000B1 (fr) * 2000-01-22 2004-03-31 Robert Bosch Gmbh Machine portable
EP2062698A1 (fr) * 2007-11-23 2009-05-27 HILTI Aktiengesellschaft Machine-outil manuelle dotée d'une réception d'outil de percussion et outil correspondant
US20110049817A1 (en) 2009-08-26 2011-03-03 Hilti Aktiengesellschaft Tool holder

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4063048A1 (fr) 2021-03-26 2022-09-28 Robert Bosch GmbH Machine-outil à main dotée d'un dispositif de verrouillage
EP4063076A1 (fr) 2021-03-26 2022-09-28 Robert Bosch GmbH Machine-outil à main dotée d'un dispositif de verrouillage
WO2022199931A1 (fr) 2021-03-26 2022-09-29 Robert Bosch Gmbh Machine-outil portative comprenant un dispositif de verrouillage
WO2022199929A1 (fr) 2021-03-26 2022-09-29 Robert Bosch Gmbh Outil électrique portatif comprenant un dispositif de verrouillage
DE102021203062A1 (de) 2021-03-26 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung
DE102021203065A1 (de) 2021-03-26 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung
DE102021203064A1 (de) 2021-03-26 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung
DE102021203063A1 (de) 2021-03-26 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung
US12138767B2 (en) 2021-03-26 2024-11-12 Robert Bosch Gmbh Hand-held power tool comprising a locking device
US12157215B2 (en) 2021-03-26 2024-12-03 Robert Bosch Gmbh Hand-held power tool comprising a locking device

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