EP2448718A1 - Dispositif de support de machine-outil à main, en particulier dispositif de support de marteau perforateur et/ou burineur - Google Patents

Dispositif de support de machine-outil à main, en particulier dispositif de support de marteau perforateur et/ou burineur

Info

Publication number
EP2448718A1
EP2448718A1 EP10718957A EP10718957A EP2448718A1 EP 2448718 A1 EP2448718 A1 EP 2448718A1 EP 10718957 A EP10718957 A EP 10718957A EP 10718957 A EP10718957 A EP 10718957A EP 2448718 A1 EP2448718 A1 EP 2448718A1
Authority
EP
European Patent Office
Prior art keywords
holding device
hammer
curved
hammer tube
blocking
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
EP10718957A
Other languages
German (de)
English (en)
Other versions
EP2448718B1 (fr
Inventor
Hubert Steinke
Lars Schmid
Johannes Schnitzler
Gerhard Meixner
Christian Koepf
Jan Koalick
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 EP2448718A1 publication Critical patent/EP2448718A1/fr
Application granted granted Critical
Publication of EP2448718B1 publication Critical patent/EP2448718B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D17/00Details of, or accessories for, portable power-driven percussive tools
    • B25D17/06Hammer pistons; Anvils ; Guide-sleeves for pistons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D17/00Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2217/00Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0011Details of anvils, guide-sleeves or pistons
    • B25D2217/0019Guide-sleeves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2250/00General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/065Details regarding assembling of the tool
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2250/00General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/351Use of pins
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00Chucks or sockets
    • Y10T279/17Socket type
    • Y10T279/17042Lost motion

Definitions

  • Hand tool holding device in particular drill and / or chisel hammer holding device
  • the invention is based on a portable power tool holding device according to the preamble of claim 1.
  • Drill and chisel hammers which comprise a hammer tube and locking bodies which, when assembled, connect the hammer tube to a tool chuck.
  • the invention is based on a hand-held power tool holding device, in particular a drill and / or chisel hammer holding device, with a hammer tube and at least one blocking body, which in an assembled state connects the hammer tube to at least one further holding component.
  • the blocking body has at least one blocking surface curved around at least one load-tilting axis.
  • a "hammer tube” is to be understood in particular an elongate, hollow component, in particular a hollow shaft, in which a racket of a hammer mechanism, a piston, in particular a pot piston, and / or a striker cooperating with a racket in the longitudinal extent of the hammer tube
  • a "load tilting axis” should be understood to mean, in particular, an axle around which the locking body is subjected during a main load, such as, in particular, loading of the hammer tube and / or the holding component to be connected to the hammer tube in the axial direction of the hammer tube and / or in the circumferential direction of the hammer tube , is tilted.
  • the blocking surface may in this case have various curvatures that appear appropriate to the person skilled in the art and may also be produced by various processes that appear appropriate to the person skilled in the art, such as by means of cutting forming processes, e.g. Milling process.
  • the blocking surface is particularly advantageous at least partially by a domed, i. formed by a plastic deformation process surface, in particular by a rolling process, whereby the life can be further increased.
  • the blocking surface of the blocking body may in principle be at least partially concave and / or particularly advantageously at least partially and preferably completely convex.
  • various components of the hand-held power tool holding device that appear appropriate to the person skilled in the art can be connected to the hammer tube.
  • the portable power tool holding device has a tool holder with at least one holding surface corresponding to the blocking body in at least one operating state, a particularly space-saving design, in particular without an additional holding flange, can be achieved.
  • a "tool holder” is to be understood in this context, in particular a component having a receiving area for an insert tool, in particular for a drill and / or chisel.
  • the hammer tube and particularly advantageously at least one further holding component has at least one curved holding surface corresponding to the curved blocking surface in at least one operating state, whereby an occurring surface pressure and an occurring wear can be further reduced.
  • the blocking body may in principle have various forms that appear appropriate to the person skilled in the art, for example, it may be spherical, cuboidal, bean-shaped, etc., in which case correspondingly adapted mating surfaces should then be provided.
  • the locking body viewed in the assembled state, viewed at least in the radial direction of the hammer tube to a greater extent than in the axial direction of the hammer tube, whereby an advantageous overlap can be achieved. It is also proposed that the blocking body has at least one curved end face and / or a curved lateral surface.
  • an "end face” should be understood to mean, in particular, a surface pointing in the longitudinal direction of the blocking body, preferably in the radial direction of the hammer tube, and under a lateral surface, in particular, a surface extending transversely to a longitudinal direction and extending around a longitudinal axis of the blocking body advantageous power flows and small surface pressures can be achieved, in particular if the locking body has at least two locking surfaces.
  • Fig. 1 is a schematic representation of a drill and chisel hammer with a
  • FIG. 2 is an enlarged view of a detail of Figure 1 with exaggeratedly large game Tarm and tilt angle
  • Fig. 3 is an enlarged view of a section of a first alternative with exaggerated large game and tilt angle and
  • Fig. 4 is an enlarged view of a section of a second alternative with exaggerated large game and tilt angle.
  • Figure 1 shows a drill and chisel hammer shown schematically with a partial section through a drill and Chisel hammer holding device of the drill and chisel hammer.
  • the hammer and chisel hammer device comprises a hammer tube 10a, in which a racket 36a of a striking mechanism, not shown, is guided.
  • the rotary hammer and chisel hammer has three equally spaced blocking bodies 12a distributed over the circumference of the hammer tube 10a, which in a mounted state connect the hammer tube 10a in a rotationally fixed and axially fixed manner to a holding component formed by a tool holder 22a.
  • the tool holder 22a has an outer diameter smaller than an inner diameter of the hammer tube 10a and inserted into the hammer tube 10a.
  • the blocking body 12a engages in the radial direction through a round recess of the hammer tube 10a, which is bounded by a holding surface 28a.
  • the blocking body 12a has two blocking surfaces 16a, 18a, which are convexly curved around its load-tilting axis 14a and formed by crowned surfaces (FIG. 2).
  • the blocking body 12a has a cylinder-like design and, viewed in the mounted state, has a greater extent in the radial direction 32a of the hammer tube 10a than in the axial direction 34a of the hammer tube 10a.
  • the blocking surfaces 16a, 18a are formed by opposite end faces of the blocking body 12a.
  • the tool holder 22a has according to the number of locking bodies 12a on its inner circumference blind hole recesses 38a, namely blind holes, whose central axes extend in the radial direction of the hammer tube 10a.
  • the blind hole recess 38a is bounded in the radial direction by a holding surface 24a of the tool holder 22a that is concave in a state of operation with the locking body 12a and concavely curved around the load tilting axis 14a.
  • the rotary hammer and chisel hammer device has a hole ring 40a penetrated radially by the lock body 12a.
  • the rotary hammer and chisel holding device has a holding member 42a formed on its radially inwardly facing side has a concave support surface 30a, which corresponds in an operating condition with the locking surface 16a of the locking body 12a.
  • the perforated ring 40a has a stepped outer contour and the retaining ring 42a has a stepped inner contour.
  • the inner contour and the outer contour are matched to one another and the inner contour and the outer contour engage in one another in a form-fitting manner in the axial and radial directions.
  • the perforated ring 40a and the retaining ring 42a are secured in the axial direction 34a of the hammer tube 10a within a portable power tool housing 46a by means of a clamping ring 44a and by means of a step 48a integrally formed on the portable power tool housing 46a. Occurs during operation, for example, the tool holder 22a in an axial direction facing away from the racket 36a axial force F1, the locking body 12a by the force F1 and a force F1 opposing reaction force F2 about the perpendicular to the axial direction 34a of the hammer tube 10a extending load tilting axis 14a tilts , as exaggerated in Figure 2 for illustrative purposes.
  • the curved locking surfaces 16a, 18a and the curved support surfaces 24a, 30a advantageously large contact surfaces, small surface pressures and a small wear can be achieved.
  • FIGS. 3 and 4 show sections of alternative embodiments. Constant components, features and functions are numbered in principle with the same reference numerals. To distinguish the embodiments, the letters a to c are added to the reference numerals. The following description is basically limited to differences from the exemplary embodiment in FIGS. 1 and 2. With regard to features and functions that remain the same, reference may be made to the description of the exemplary embodiment in FIGS. 1 and 2.
  • FIG. 3 shows a section of an alternative drill and chisel hammer holding device with barrel-shaped blocking bodies 12b, which connect a hammer tube 10b and a tool holder 22b of the rotary and chisel holding device in a rotationally and axially fixed manner.
  • the blocking body 12b has a curved blocking surface 20b, namely a convexly curved lateral surface and planar end faces 16b, 18b.
  • the hammer tube 10b has a radial passage recess per blocking body 12b which is delimited by a holding surface 28b, which is concavely curved about a loading tilting axis 14b, of the hammer tube 10b, which in an operating state corresponds to the blocking surface 20b.
  • the holding surface 28b of the hammer tube 10b is a lateral surface or surrounds the blocking body 12b by 360 °. Furthermore, the tool holder 22b has a radial blind hole recess, which is delimited by a holding surface 26b, which concavely curves around the load-tilting spindle 14b and, during operation, corresponds with the blocking surface 20b.
  • the holding surface 26b is formed by a lateral surface or surrounds the blocking body 12b by 360 °.
  • the hammer tube 10b is limited in the radial direction directly by a hand tool housing 46b in the region of the locking body 12b.
  • the hammer tube 10b is mounted directly in the portable power tool housing 46b.
  • FIG. 4 shows a section of an alternative drill and chisel hammer holding device with barrel-shaped blocking bodies 12c, which connect a hammer tube 10c and a tool holder 22c of the hammer and chisel holder in a rotationally fixed and axially fixed manner.
  • the blocking body 12c has three curved blocking surfaces 16c, 18c, 20c, namely a convexly curved lateral surface and two convexly curved end faces.
  • the hammer tube 10c has a radial passage recess per blocking body 12c which is delimited by a holding surface 28c, which is concavely curved about a loading tilting axis 14c, of the hammer tube 10c, which in an operating state corresponds to the blocking surface 20c.
  • the tool holder 22c has a radial blind hole recess which is delimited by a holding surface 26c, which concavely curves around the load-tilting spindle 14c and, during operation, corresponds with the blocking surface 20c.
  • the holding surface 26c is formed by a lateral surface or surrounds the blocking body 12c by 360 °.
  • the hammer tube 10c is bounded in the radial direction directly by a hand-held power tool housing 46c in the region of the blocking body 12c.
  • the curved end surfaces of the locking body 12c correspond to a radially inwardly facing concave support surface 30c of the portable power tool housing 46c and a radially outwardly facing concave support surface 24c of the tool holder 22c.

Landscapes

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

Abstract

L’invention concerne un dispositif de support de machine-outil à main, en particulier un dispositif de support de marteau perforateur et/ou burineur, présentant un tube de marteau (10a, 10b, 10c) et au moins un corps de blocage (12a, 12b, 12c) qui relie, à l’état monté, le tube de marteau (10a, 10b, 10c) à au moins un autre élément de support. Selon l’invention, le corps de blocage (12a, 12b, 12c) présente au moins une surface de blocage (16a, 18a ; 20b ; 16c, 18c, 20c) courbée autour d’au moins un axe d’inclinaison par sollicitation (14a, 14b, 14c).
EP10718957.3A 2009-06-30 2010-04-30 Dispositif de retenue de machine-outil à main, en particulier dispositif de support de marteau perforateur et/ou burineur Active EP2448718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009027316A DE102009027316A1 (de) 2009-06-30 2009-06-30 Handwerkzeugmaschinenhaltevorrichtung, insbesondere Bohr- und/oder Meißelhammerhaltevorrichtung
PCT/EP2010/055880 WO2011000595A1 (fr) 2009-06-30 2010-04-30 Dispositif de support de machine-outil à main, en particulier dispositif de support de marteau perforateur et/ou burineur

Publications (2)

Publication Number Publication Date
EP2448718A1 true EP2448718A1 (fr) 2012-05-09
EP2448718B1 EP2448718B1 (fr) 2016-01-27

Family

ID=42537621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10718957.3A Active EP2448718B1 (fr) 2009-06-30 2010-04-30 Dispositif de retenue de machine-outil à main, en particulier dispositif de support de marteau perforateur et/ou burineur

Country Status (5)

Country Link
US (1) US9352460B2 (fr)
EP (1) EP2448718B1 (fr)
DE (1) DE102009027316A1 (fr)
RU (1) RU2012103042A (fr)
WO (1) WO2011000595A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015061370A1 (fr) 2013-10-21 2015-04-30 Milwaukee Electric Tool Corporation Adaptateur pour dispositifs d'outil électrique
US20160271778A1 (en) * 2015-03-21 2016-09-22 Chih Kuan Hsieh Fixing Structure for Cylinder
US10286535B2 (en) 2016-03-30 2019-05-14 Caterpillar Inc. Valve body charge lock

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2080887A (en) * 1936-04-02 1937-05-18 Ingersoll Rand Co Implement retainer
CH556719A (de) 1973-06-29 1974-12-13 Studer Rudolf Motorisch, insbesondere elektromotorisch, angetriebener schlagbohrhammer.
US4222462A (en) * 1978-10-11 1980-09-16 Ottestad Jack Benton Brake to decelerate axially moving actuating rod
DE3721771A1 (de) * 1987-07-01 1989-01-12 Hilti Ag Handgeraet
US4903784A (en) * 1988-09-30 1990-02-27 Glendo Corporation Impact hammer power tool
DE4343013C2 (de) * 1993-12-16 2003-04-03 Bosch Gmbh Robert Bohrhammer mit einer Kombinations-Werkzeughalterung
DE4418103A1 (de) 1994-05-24 1995-11-30 Hilti Ag Bohr- und/oder Meisselgerät
DE4419826A1 (de) 1994-06-07 1995-12-14 Bosch Gmbh Robert Werkzeughalter für eine Handbohrmaschine, insbesondere für einen Bohrhammer, sowie Handbohrmaschine mit Werkzeughalter
DE19521993B4 (de) * 1995-06-20 2009-04-09 Robert Bosch Gmbh Werkzeughalter und Werkzeug für eine Bohr- und/oder Schlagwerkzeugmaschine
DE19810088C1 (de) 1998-03-10 1999-08-26 Bosch Gmbh Robert Bohr- und/oder Schlaghammer mit in Abhängigkeit von der Einstecktiefe eines Werkzeuges aktivierbarem Schlagwerk
DE10152959B4 (de) 2001-10-26 2007-03-15 Robert Bosch Gmbh Handwerkzeugmaschine
DE10360077A1 (de) * 2003-12-20 2005-07-21 Robert Bosch Gmbh Werkzeughalterung für eine Handwerkzeugmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011000595A1 *

Also Published As

Publication number Publication date
WO2011000595A1 (fr) 2011-01-06
US20120187639A1 (en) 2012-07-26
US9352460B2 (en) 2016-05-31
RU2012103042A (ru) 2013-08-10
DE102009027316A1 (de) 2011-01-05
EP2448718B1 (fr) 2016-01-27

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