EP1417076B1 - Machine-outil manuelle - Google Patents

Machine-outil manuelle Download PDF

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Publication number
EP1417076B1
EP1417076B1 EP02716627A EP02716627A EP1417076B1 EP 1417076 B1 EP1417076 B1 EP 1417076B1 EP 02716627 A EP02716627 A EP 02716627A EP 02716627 A EP02716627 A EP 02716627A EP 1417076 B1 EP1417076 B1 EP 1417076B1
Authority
EP
European Patent Office
Prior art keywords
tool
guide element
hammer
tool guide
hammer tube
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.)
Expired - Lifetime
Application number
EP02716627A
Other languages
German (de)
English (en)
Other versions
EP1417076A1 (fr
Inventor
Gerhard Meixner
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 EP1417076A1 publication Critical patent/EP1417076A1/fr
Application granted granted Critical
Publication of EP1417076B1 publication Critical patent/EP1417076B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
    • B25D9/265—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof with arrangements for automatic stopping when the tool is lifted from the working face or suffers excessive bore resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/04—Portable percussive tools with electromotor or other motor drive in which the tool bit or anvil is hit by an impulse member
    • 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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/04—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
    • 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
    • B25D2250/191—Ram catchers for stopping the ram when entering idling mode

Definitions

  • the invention relates to a hand tool, in particular a drill and / or chisel hammer, according to the preamble of claim 1.
  • Such a hand tool is from the FR-A-2 412 391 known.
  • Such a hand tool machine is known from practice and designed, for example, as a hammer drill, which has a hammer tube arranged in a machine housing, in which a drive piston designed as a pot piston is guided.
  • the pot piston is coupled via an air cushion with a so-called bat, which in turn is in operative connection with an anvil for driving a arranged in a tool guide element tool, which is designed for example as a drill.
  • a so-called driving toothing is formed, with which the tool is engaged.
  • the hammer drill has an idle position and an operating or impact position.
  • idle position are the tool, the striker and the racket in a so-called front position.
  • the racket is held by a safety gear.
  • the operating position in which the tool is placed, for example, on a surface to be machined, the tool is subjected to an axial pressure, so that the entirety of the tool, the striker and the racket is moved to a so-called rear position and by means of the racket so-called Idle openings of the pot piston are closed.
  • a compressed air cushion builds up between the pot piston and the racket, by means of which movements of the pot piston are transmitted to the racket and thus to the striker and the tool.
  • the tool guide element and the safety gear are fixed to the housing in the known hammer drill in the axial direction, so that a relative movement between the tool guide element and the tool takes place during the transition from the idle to the operating position or from the operating to the idle position.
  • FR-A-2 412 391 is a hammer drill with a machine housing, a tool guide element, a hammer tube and a housing fixed in the axial direction safety gear for a racket, which is driven by a drive piston and is operatively connected to a tool disposed in the tool guide element, known, wherein the tool guide member relative to the machine housing axially is formed displaceable.
  • the tool guide element is formed by a screwed into a spindle tool holder, wherein an anvil is guided within the spindle.
  • the invention relates to a hand tool, in particular a drill and / or chisel, with a machine housing, a tool guide element, a hammer tube and a housing fixed in the axial direction safety gear for a racket, which is driven by a drive piston and arranged with a tool guide element
  • Tool is in operative connection, wherein the tool guide element is formed axially displaceable relative to the machine housing, and wherein the tool guide element is formed integrally with a guide of an anvil, whereby components, space, weight, assembly costs and costs can be saved.
  • the transition from the idle position to the operating position or from the operating position to the idle position can thus be carried out both an axial displacement of the tool and an axial displacement of the tool guide element.
  • the relative movement between the tool and the tool guide element can be kept low.
  • the operational wear in the connection area between these two components is low, which in turn leads to a long life of the components.
  • the tool guide element is rotatably mounted and has a driving teeth for the tool, a large tooth surface between the tool and the tool guide element in the direction of rotation can be realized. This creates a low surface pressure, which in turn has a favorable effect in terms of wear.
  • An inexpensive means for adjusting the idle position of the tool guide element is a compression spring, by means of which the tool guide element is biased in the direction of the tool.
  • the tool guide element is formed integrally with the hammer tube. This leads to a component reduction and thus to a reduced installation effort.
  • the assembly of the tool guide member and the hammer tube is then formed axially displaceable, so that the hammer tube in the transition from the idle position also experiences an axial displacement in the operating position or from the operating position to the idle position.
  • the compression spring can act directly on the hammer tube or on the tool guide element in this embodiment.
  • the safety gear can follow a rotation of the tool guide element or the hammer tube
  • the safety device is advantageously mounted in a housing-fixed guide ring.
  • the catching device is so particularly when the tool guide element and the hammer tube are integrally formed axially fixed to the housing without a rotation of the hammer tube would be affected.
  • a structurally simple solution for guiding the safety gear in the guide ring is a catch device associated with the pin, which engages in the guide ring. To entrain the pin during a rotation of the hammer tube, this advantageously extends through an elongated hole of the hammer tube, which extends in the axial direction.
  • the safety device may be attached to the hammer tube, which is connected to the machine housing.
  • the hammer tube and the safety gear are fixed to the housing in the axial direction.
  • the tool guide element is individually exchangeable in case of wear.
  • the drive piston is advantageous designed as a pot piston. This is particularly advantageous for heavy drilling and / or chipping hammers. But it is also conceivable to form the drive piston as a cylinder piston.
  • the safety gear can protrude into the pot piston.
  • the safety gear is used in this case as a stop for the racket during its displacement in the pot piston.
  • a hammer drill 10 is shown schematically, which is driven by means of an electric motor, not shown, and has a so-called Topfkolbenschlagwerk.
  • Fig. 1 is the hammer drill 10 in the operating position, ie in impact position, and in Fig. 2 the hammer drill 10 is shown in idle position.
  • the hammer drill 10 comprises a machine housing 12, in which a hammer tube 14 is mounted axially movable and rotatable, which is integrally formed with a tool guide member 16.
  • the hammer tube 14 is supported in the front area via a sliding bearing 48 in the housing 12.
  • the hammer tube 14 and thus the tool guide element 16 are rotatably mounted in the machine housing 12.
  • a pot piston 22, a racket 24 and an anvil 26 are guided in a conventional manner.
  • the striker 26 serves to impulse transmission to the tool 20.
  • the axial movement of the striker 26 is limited by means of a voltage applied to a bearing 28 O-ring 30 made of rubber, which for driving the hammer tube 14 at axially in the direction of the pot piston 22 on the tool 20th exerted pressure, so that the tool 20 of the striker 26 and the striker 26th the hammer tube 14 or the tool guide element 16 is displaced in the direction of the pot piston 22 via the O-ring 30 and the support 28.
  • the striker 26 In the operating position, the striker 26 is pressed against the O-ring 30, as in Fig. 1 shown.
  • a catch device 32 with a catching ring 34 which projects into the pot piston 22, on the open side in the axial direction and cooperates with a collar 36 of the racket 24.
  • the safety gear 32 is fixed to the housing in the axial direction.
  • the catching device 32 comprises a cylindrical pin 38, which passes through an axially aligned slot 40 of the hammer tube 14 and engages in a serving as Lager.
  • the safety gear 32 guide ring 42 which is fixed to the machine housing 12. With rotating hammer tube 14, the cylindrical pin 38 is guided in the circumferential direction in the guide ring 42.
  • a compression spring 44 which acts via a support 46 on the hammer tube 14 and this in the direction of the tool 20, i. in neutral, biased.
  • the support 46 is movably mounted in the circumferential direction in an annular groove of the hammer tube 14 and is formed fixed to the housing relative to the machine housing 12 in the circumferential direction.
  • a chisel hammer 50 is shown in 3 and 4 . Essentially identical components are numbered in the illustrated embodiments in principle with the same reference numerals. Furthermore, with respect to consistent Features and functions on the description of the embodiment according to Fig. 1 and 2 to get expelled.
  • the chipping hammer 50 whose operating position in Fig. 3 and its idle position in Fig. 4 is different from the hammer drill Fig. 1 and 2 in that it comprises a hammer tube 52 and a tool guide element 54, which are constructed in two parts. Furthermore, the chisel hammer 50 has no rotary drive of the tool guide element 54 or of the hammer tube 52.
  • a catching device 32 is attached to a catching ring 34 which cooperates with a collar 36 of a racket 24.
  • the hammer tube 52 is fixedly connected via a connecting element 56 with a machine housing 12, so that the safety gear 32 is fixed to the housing in the axial direction.
  • the tool guide element 54 is axially movably guided in the hammer tube 52 and thus designed to be axially displaceable relative to the machine housing 12.
  • the axial movement of the tool guide member 54 relative to the hammer tube 52 is defined by a longitudinal groove 60 which is formed on the outer wall of the tool guide member 54 and in which a ball 58 engages, in an opening in the hammer tube 52 is held.
  • the opening is covered radially outward by the connecting element 56.
  • an anvil 26 is guided, which cooperates with a tool guide element 54 via a driving toothing 18 attached tool 20 and the displacement of the tool guide member 54 in the axial direction with a voltage applied to a support 28 O-ring 30.
  • the striker 26 is actuated by means of the drivable via a pot piston 22 racket 24.
  • the hammer tube and the tool guide element could be made in two parts and in a chisel hammer the hammer tube and the guide element in one piece in a hammer drill.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)

Abstract

La présente invention concerne une machine-outil manuelle, notamment un marteau perforateur et/ou burineur, comprenant un boîtier de machine (12), un élément de guidage d'outil (16, 54), un tube de marteau (14; 52) ainsi qu'un dispositif d'arrêt (32) solidaire du boîtier en direction axiale et destiné à un percuteur (24) qui peut être entraîné au moyen d'un piston d'entraînement (22) et qui est relié à un outil (20) mis en place dans l'élément de guidage d'outil (16; 54) pour interagir avec ledit outil. Selon l'invention, l'élément de guidage d'outil (16; 54) peut effectuer un déplacement axial par rapport au boîtier de machine (12).

Claims (9)

  1. Machine outil à main, en particulier marteau perforateur et/ou marteau-piqueur comprenant un boîtier de machine (12), un élément de guidage d'outil (16 ; 54), un tube de marteau (14, 52) ainsi qu'un dispositif récepteur (32) réalisé de manière fixée au boîtier dans la direction axiale pour un percuteur (24), qui peut être entraîné au moyen d'un piston d'entraînement (22) et qui est en liaison fonctionnelle avec un outil (20) disposé dans l'élément de guidage d'outil (16, 54), l'élément de guidage d'outil (16, 54) étant réalisé de manière déplaçable axialement par rapport au boîtier de machine (12), caractérisée en ce que l'élément de guidage d'outil (16, 54) est réalisé d'une seule pièce avec un guidage d'une bouterolle (26).
  2. Machine outil à main selon la revendication 1, caractérisée en ce que l'élément de guidage d'outil (16, 54) est précontraint au moyen d'un ressort de pression (44) dans la direction de l'outil (20).
  3. Machine outil à main selon la revendication 1 ou 2, caractérisée en ce que l'élément de guidage d'outil (16) est réalisé d'une seule pièce avec le tube de marteau (14).
  4. Machine outil à main selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le dispositif récepteur (32) est monté dans une bague de guidage (42) fixée au boîtier.
  5. Machine outil à main selon la revendication 4, caractérisée en ce que le dispositif récepteur (32) entoure une tige (38) qui vient en prise dans la bague de guidage (42).
  6. Machine outil à main selon la revendication 5, caractérisée en ce que la tige (38) traverse un trou oblong (40) du tube de marteau (14).
  7. Machine outil à main selon la revendication 1 ou 2, caractérisée en ce que le dispositif récepteur (32) est fixé au tube de marteau (52), qui est connecté au boîtier de machine (12).
  8. Machine outil à main selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le piston d'entraînement est un piston à pot (22).
  9. Machine outil à main selon la revendication 8, caractérisée en ce que le dispositif récepteur (32) pénètre dans le piston à pot (22).
EP02716627A 2001-05-11 2002-02-27 Machine-outil manuelle Expired - Lifetime EP1417076B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10122820 2001-05-11
DE10122820A DE10122820A1 (de) 2001-05-11 2001-05-11 Handwerkzeugmaschine
PCT/DE2002/000718 WO2002092291A1 (fr) 2001-05-11 2002-02-27 Machine-outil manuelle

Publications (2)

Publication Number Publication Date
EP1417076A1 EP1417076A1 (fr) 2004-05-12
EP1417076B1 true EP1417076B1 (fr) 2010-12-08

Family

ID=7684350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02716627A Expired - Lifetime EP1417076B1 (fr) 2001-05-11 2002-02-27 Machine-outil manuelle

Country Status (7)

Country Link
US (1) US6810969B2 (fr)
EP (1) EP1417076B1 (fr)
JP (1) JP2004519347A (fr)
CN (1) CN100421879C (fr)
BR (1) BR0205223B1 (fr)
DE (2) DE10122820A1 (fr)
WO (1) WO2002092291A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10333799B3 (de) * 2003-07-24 2005-02-17 Wacker Construction Equipment Ag Hohlkolbenschlagwerk mit Luftausgleichs- und Leerlauföffnung
DE10359572A1 (de) * 2003-12-18 2005-07-28 Robert Bosch Gmbh Schlagwerk für eine repetierend schlagende Handwerkzeugmaschine
DE102004025951A1 (de) * 2004-05-27 2005-12-22 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer
JP4702027B2 (ja) 2005-05-26 2011-06-15 パナソニック電工株式会社 ハンマードリル
DE102005046664B4 (de) 2005-09-29 2016-11-17 Robert Bosch Gmbh Verfahren zur Erzeugung eines flexiblen Anzeigebereichs für ein Videoüberwachungssystem
JP4686372B2 (ja) * 2006-02-01 2011-05-25 株式会社マキタ 衝撃式作業工具
DE102006060320A1 (de) * 2006-12-20 2008-06-26 Robert Bosch Gmbh Schlagwerk für eine Handwerkzeugmaschine
DE102008000727A1 (de) * 2008-03-18 2009-09-24 Robert Bosch Gmbh Tragbare Werkzeugmaschine, insbesondere Bohr- oder Schlaghammer, mit einer Schlägerfangeinrichtung und/oder Schlägerdämpfungseinrichtung
JP7236921B2 (ja) * 2019-04-18 2023-03-10 株式会社マキタ 打撃工具

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283769B (de) 1963-05-15 1968-11-21 Impex Essen Vertrieb Schlaghammer
DE1628045B2 (de) * 1967-01-13 1974-01-10 Robert Bosch Gmbh, 7000 Stuttgart Hammergerät mit einem quer zur Schlagrichtung eingebauten Antriebsmotor
DE2229388C3 (de) * 1972-06-16 1981-01-22 Robert Bosch Gmbh, 7000 Stuttgart Von Hand zu führender Bohrhammer
DE2756993A1 (de) 1977-12-21 1979-07-05 Duss Maschf Elektropneumatischer hammer mit fangring fuer den schlagkolben
DE2916499A1 (de) * 1979-04-24 1980-11-06 Duss Maschf Elektro-handbohrmaschine mit vorrichtung zur wahlweisen umstellung fuer drehendes oder schlagendes bohren
DE3335553C2 (de) * 1983-09-30 1994-02-24 Black & Decker Inc Bohrhammer mit Leerlauffangeinrichtung
DE3511491A1 (de) 1985-03-29 1986-10-09 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
DE3804026A1 (de) * 1987-12-21 1989-08-24 Bosch Gmbh Robert Motorisch angetriebener meissel- oder bohrhammer
SU1662832A1 (ru) * 1988-09-23 1991-07-15 Московское Научно-Производственное Объединение По Механизированному Строительному Инструменту И Отделочным Машинам Машина ударного действи
DE4100185A1 (de) * 1991-01-05 1992-07-09 Bosch Gmbh Robert Handwerkzeugmaschine mit sicherheitskupplung
JP3424870B2 (ja) * 1995-02-28 2003-07-07 株式会社マキタ 打撃工具の空打ち防止装置
DE19724531B4 (de) * 1997-06-11 2005-07-14 Robert Bosch Gmbh Bohrhammer
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
DE19933972A1 (de) * 1999-07-20 2001-01-25 Bosch Gmbh Robert Bohr- oder Schlaghammer

Also Published As

Publication number Publication date
WO2002092291A1 (fr) 2002-11-21
US20030178213A1 (en) 2003-09-25
BR0205223B1 (pt) 2011-05-17
EP1417076A1 (fr) 2004-05-12
US6810969B2 (en) 2004-11-02
CN100421879C (zh) 2008-10-01
DE50214804D1 (de) 2011-01-20
BR0205223A (pt) 2003-06-24
DE10122820A1 (de) 2002-11-21
CN1462225A (zh) 2003-12-17
JP2004519347A (ja) 2004-07-02

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