EP2910337A1 - Porte-outil - Google Patents

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Publication number
EP2910337A1
EP2910337A1 EP14155930.2A EP14155930A EP2910337A1 EP 2910337 A1 EP2910337 A1 EP 2910337A1 EP 14155930 A EP14155930 A EP 14155930A EP 2910337 A1 EP2910337 A1 EP 2910337A1
Authority
EP
European Patent Office
Prior art keywords
base body
tool holder
sealing ring
insertion direction
inner diameter
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Withdrawn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
EP14155930.2A
Other languages
German (de)
English (en)
Inventor
Ralf Meixner
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 EP14155930.2A priority Critical patent/EP2910337A1/fr
Priority to EP15703298.8A priority patent/EP3107694B1/fr
Priority to US15/120,282 priority patent/US10099360B2/en
Priority to PCT/EP2015/052736 priority patent/WO2015124460A1/fr
Priority to CN201580009387.XA priority patent/CN106029304A/zh
Publication of EP2910337A1 publication Critical patent/EP2910337A1/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Withdrawn legal-status Critical Current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
    • B25D2217/0057—Details related to cleaning or cooling the tool or workpiece
    • B25D2217/0065—Use of dust covers
    • B25D2217/0069—Protecting chucks against entering of chip dust

Definitions

  • the present invention relates to a tool holder for a hand-held machine tool, in particular for a rotating and chiseling machine tool, such as a hammer drill, such as from DE 10 2010 10029609 A1 known.
  • the tool holder according to the invention for a hand-held machine tool has a tubular base body and a dust cap.
  • the main body has an end face, which is followed by a cylindrical or prismatic outer surface.
  • the dust cap has successively in the insertion direction a sealing ring, a central portion and a seat.
  • the sealing ring is arranged in the insertion direction in front of the end face of the base body.
  • the seat has a cylindrical or prismatic inner surface which bears against the outer surface of the base body.
  • the central portion has a conical inner surface whose inner diameter decreases in the insertion direction down to the inner diameter of the cylindrical inner surface.
  • the dust cap sits with its seat tight on the body.
  • the inner surface of the seat and the outer surface of the body are preferably complementary to each other.
  • the middle section is not on the body.
  • the middle section forms a solid-state joint, which allows a small deflection of the sealing ring transversely to the working axis.
  • the sealing ring can follow in this way transverse movements of the drill or bit.
  • the sealing ring remains circumferentially adjacent to the drill and seals the opening of the tool holder.
  • abrasion of the sealing ring is reduced by oblique drills.
  • 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.
  • the motor 5 and the striking mechanism 6 are arranged in a machine housing 8 .
  • a user can perform the combination hammer 1 by means of a handle 9 attached to the machine housing 8 and take the combination hammer 1 by means of a system switch 10 in operation.
  • the combination hammer 1 rotates the drill 4 continuously about a working axis 11 and can beat the drill 4 in the direction of impact 12 along the working axis 11 in a substrate.
  • the striking mechanism 6 is preferably a motor-driven pneumatic percussion 6.
  • a racket 13 is coupled via an air spring 14 to one of the motor 5 along a working axis 11 reciprocating piston 15 .
  • the bat 13 strikes directly or indirectly by an anvil 16 on the shaft end . 3
  • 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 (main body) with a receiving space 18 for the tool 4.
  • the drill 4 can through an output-side opening on the front side 19 of the body 17 in the insertion direction 20 (counter to the direction of impact 12) in the receiving space 18 are used.
  • the receiving space 18 is preferably complementary to the shaft end 3, for example cylindrical.
  • the exemplary tool holder 2 has two in the receiving space 18 partially projecting pawls 21.
  • the pawls 21 are in two slots 22, which are introduced into the base body 17 .
  • a locking ring 23 covers in the radial direction, the two pawls 21 such that they can not dodge radially.
  • a counter to the insertion direction 20 spring-loaded slide 24 holds the two latches 21 in the locking ring 23.
  • a user can draw by means of an unlocking sleeve 25, the two pawls 21 in the insertion direction 20 from the locking ring 23 so that they radially can swing out of the receiving space 18 .
  • pawls 21 and balls can be used.
  • the tool holder 2 also has one or more protruding into the receiving space 18 webs 26 which are rigidly connected to the main body 17 . A rotating about the working axis 11 movement of the base body 17 is transmitted by means of the webs 26 on the drill 4 .
  • a dust cap 27 protects the tool holder 2 against dust.
  • the dust cap 27 is attached to the main body 17 in the insertion direction 20 .
  • the dust cap 27 has in the insertion direction 20 of the drill 4 three immediately successive sections 28, 29, 30.
  • the three sections 28, 29, 30 are preferably a monolithic component, ie hang without joint zones, neither glued, welded, bolted, etc., together ,
  • the foremost portion 28 forms a sealing ring 28.
  • the sealing ring 28 is situated in the insertion direction 20 from the base body 17.
  • An inner diameter 31 of the sealing ring 29 is narrower than the typical diameter of the drill bit 4 corresponding to the inner diameter 31 of the sealing ring 29 is smaller than the inner diameter 33 of the receiving space 18.
  • the sealing ring 28 and the drill 4 close dust-tight with each other and thus prevent dust from entering the receiving space 18.
  • the sealing ring 28 may have a sealing lip 32 which is inserted into the inner surface 34 of the sealing ring 28 and the inner diameter of the 31st Are defined.
  • the sealing lip 32 is a thin ring, which is preferably formed of a softer plastic than the dust cap 27 , for example made of rubber.
  • a rear portion 30 of the dust cap 27 forms a seat 30 of the dust cap 27 with a cylindrical inner surface 35.
  • the inner surface 35 is preferably tight against the outer surface 36 of the body 17 at.
  • the inner surface 35 of the seat 30 preferably has the same shape as the outer surface 36 of the base body 17, that is, both cylindrical or both prismatic.
  • An inner diameter 37 of the seat 30 is equal to the outer diameter of the base body 17.
  • An annular thickening 38 of the seat 30 can engage in an annular groove of the base body 17 to prevent accidental removal of the dust cap 27 .
  • a central portion 29 connects the front portion 28 and the rear portion 30.
  • the middle portion 29 forms a solid joint 29 between the sealing ring 28 and the seat 30.
  • the middle portion 29 has a conical inner surface 39.
  • the conical inner surface 39 widens from the Seat 30 to the sealing ring 28, at least up to the front side 19 of the main body 17, increasingly on.
  • the inner diameter 40 increases accordingly against the insertion direction 20 .
  • a wedge-shaped gap 41 results between the central portion 29 and the base body 17 .
  • the inclination 42 of the conical inner surface 39 is small and is in the range between 5 degrees and 20 degrees.
  • a length 43 of the central portion 29 is greater than half the inner diameter 37 of the seat 30, ie greater than half the outer diameter of the base body 17th

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP14155930.2A 2014-02-20 2014-02-20 Porte-outil Withdrawn EP2910337A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14155930.2A EP2910337A1 (fr) 2014-02-20 2014-02-20 Porte-outil
EP15703298.8A EP3107694B1 (fr) 2014-02-20 2015-02-10 Porte-outil
US15/120,282 US10099360B2 (en) 2014-02-20 2015-02-10 Tool socket
PCT/EP2015/052736 WO2015124460A1 (fr) 2014-02-20 2015-02-10 Porte-outil
CN201580009387.XA CN106029304A (zh) 2014-02-20 2015-02-10 工具夹头

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14155930.2A EP2910337A1 (fr) 2014-02-20 2014-02-20 Porte-outil

Publications (1)

Publication Number Publication Date
EP2910337A1 true EP2910337A1 (fr) 2015-08-26

Family

ID=50137532

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14155930.2A Withdrawn EP2910337A1 (fr) 2014-02-20 2014-02-20 Porte-outil
EP15703298.8A Active EP3107694B1 (fr) 2014-02-20 2015-02-10 Porte-outil

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15703298.8A Active EP3107694B1 (fr) 2014-02-20 2015-02-10 Porte-outil

Country Status (4)

Country Link
US (1) US10099360B2 (fr)
EP (2) EP2910337A1 (fr)
CN (1) CN106029304A (fr)
WO (1) WO2015124460A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3763467A1 (fr) * 2019-07-11 2021-01-13 Hilti Aktiengesellschaft Couvercle de protection anti-poussière à découplage de vibrations
EP3763484A1 (fr) * 2019-07-11 2021-01-13 Hilti Aktiengesellschaft Lèvre de scellement au raccordement d'outil

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10646259B2 (en) * 2017-04-05 2020-05-12 Warsaw Orthopedic, Inc. Surgical implant bending system and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606331A1 (de) * 1986-02-27 1987-09-03 Bosch Gmbh Robert Staubabdichtung
DE9305463U1 (de) * 1993-04-10 1993-06-24 Crones & Co GmbH, 8800 Ansbach Werkzeughalterung an Handschlaggeräten, insbesondere Meißelhämmern
US20030136586A1 (en) * 2002-01-23 2003-07-24 Hans-Jurgen Schneider Holding device for the inner seal of a fluid-operated percussion drive

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10157831B4 (de) 2001-11-24 2004-06-24 Robert Bosch Gmbh Handwerkzeugmaschine mit einem ein Werkzeug aufnehmenden Döpper
DE102007056531A1 (de) 2007-11-23 2009-05-28 Hilti Aktiengesellschaft Handwerkzeugmaschine mit Schlagwerkzeugaufnahme und zugeordnetes Werkzeug
DE102010029609A1 (de) 2010-06-02 2011-12-08 Hilti Aktiengesellschaft Staubabweisende Werkzeugbremse, Werkzeugeinführteil, Werkzeugaufnahme, Handwerkzeugmaschine
DE102012212231A1 (de) 2012-07-12 2014-01-16 Hilti Aktiengesellschaft Handwerkzeugmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606331A1 (de) * 1986-02-27 1987-09-03 Bosch Gmbh Robert Staubabdichtung
DE9305463U1 (de) * 1993-04-10 1993-06-24 Crones & Co GmbH, 8800 Ansbach Werkzeughalterung an Handschlaggeräten, insbesondere Meißelhämmern
US20030136586A1 (en) * 2002-01-23 2003-07-24 Hans-Jurgen Schneider Holding device for the inner seal of a fluid-operated percussion drive

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3763467A1 (fr) * 2019-07-11 2021-01-13 Hilti Aktiengesellschaft Couvercle de protection anti-poussière à découplage de vibrations
EP3763484A1 (fr) * 2019-07-11 2021-01-13 Hilti Aktiengesellschaft Lèvre de scellement au raccordement d'outil
WO2021004834A1 (fr) * 2019-07-11 2021-01-14 Hilti Aktiengesellschaft Lèvre d'étanchéité sur porte-outil
WO2021004849A1 (fr) * 2019-07-11 2021-01-14 Hilti Aktiengesellschaft Cache anti-poussière doté d'un découplage des vibrations

Also Published As

Publication number Publication date
US20170057073A1 (en) 2017-03-02
WO2015124460A1 (fr) 2015-08-27
US10099360B2 (en) 2018-10-16
CN106029304A (zh) 2016-10-12
EP3107694A1 (fr) 2016-12-28
EP3107694B1 (fr) 2019-11-27

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