EP2451615B1 - Appareil de forage et/ou percussion - Google Patents

Appareil de forage et/ou percussion Download PDF

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Publication number
EP2451615B1
EP2451615B1 EP10724336.2A EP10724336A EP2451615B1 EP 2451615 B1 EP2451615 B1 EP 2451615B1 EP 10724336 A EP10724336 A EP 10724336A EP 2451615 B1 EP2451615 B1 EP 2451615B1
Authority
EP
European Patent Office
Prior art keywords
bearing
intermediate shaft
bearing plate
rotary hammer
drive
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
EP10724336.2A
Other languages
German (de)
English (en)
Other versions
EP2451615A1 (fr
Inventor
Hardy Schmid
Holger Ruebsaamen
Tobias Herr
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 EP2451615A1 publication Critical patent/EP2451615A1/fr
Application granted granted Critical
Publication of EP2451615B1 publication Critical patent/EP2451615B1/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
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/062—Means for driving the impulse member comprising a wobbling mechanism, swash plate
    • 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
    • B25D2250/065—Details regarding assembling of the tool
    • 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
    • B25D2250/331—Use of bearings
    • B25D2250/335—Supports therefor

Definitions

  • the invention relates to a hammer drill and / or chisel device according to the preamble of claim 1.
  • a hammer drill and / or chisel device according to the preamble of claim 1.
  • Such a device is from the EP 0771620 A1 known.
  • the invention relates to a hammer drill and / or chisel device, with a striking mechanism and an intermediate shaft, which are each mounted substantially parallel to an axial direction, and with a transmission housing and an intermediate flange.
  • a "hammer drill” should be understood in this context in particular a hand-operated drill with a percussion known type, in which a striking energy of the percussion is independent of a pressing force exerted by an operator of the hammer drill.
  • the percussion mechanism is formed by a drive piston, a racket driven by the drive piston, a percussion tube supporting the drive piston and the bait and possibly a percussion piston.
  • a “chiseling device” is to be understood in this context in particular a hand-operated chisel or percussion hammer with a percussion of the type described above, in which a striking energy of the percussion is independent of a pressing force by an operator of the chisel or Schlaghammer is exercised.
  • an "axial direction” is to be understood as meaning in particular a direction parallel to a direction of flight of the racket during operation of the hammer drill and / or chisel device.
  • the drilling and / or chiseling device comprises a bearing plate, which is releasably connected to the intermediate flange and intended to support the intermediate shaft and at least one component of the percussion mechanism, whereby a simple, material and space-saving and therefore cost-effective solution can be provided for a fixation and storage of the intermediate shaft and a component of the impact mechanism.
  • the mounted in the bearing plate component of the impact mechanism may be a hollow piston.
  • provided in a known manner for guiding the hollow piston percussion tube can be greatly shortened, whereby material and space can be saved and a particularly cost-effective solution can be provided.
  • the intermediate flange fixes the end shield in the axial direction.
  • This allows a particularly simple and inexpensive fixation and storage of the intermediate shaft and a component of the impact mechanism can be achieved.
  • other methods familiar to the person skilled in the art and means for fastening the end shield are also possible.
  • the drilling and / or chiseling device can have at least one screw connection, which is intended to detachably connect the end shield to the intermediate flange in at least one operating state. It is particularly advantageous if the end shield has a tension element which is provided to produce a clamping of the end shield between the intermediate flange and the gearbox in at least one operating state.
  • the fixation of the bearing plate in the axial direction is achieved by a clamping between the intermediate flange and the gear housing, wherein the tension element with at least one corresponding element of the gear housing and / or the intermediate flange in a mounting after application of a force acting in the axial direction in a radial Create direction permanent acting clamping force.
  • a radial direction is in this context in particular a direction are understood, which, starting from the axial direction axis, is perpendicular to this.
  • the tension element may be formed as an inclined surface. This can be achieved in a particularly simple and component-saving way clamping and thus fixing the bearing plate.
  • the bearing plate for supporting the intermediate shaft on a bearing with a bearing outer element which is detachably connected to the intermediate flange, whereby a material and space-saving and thus cost-effective solution of fixing and supporting the intermediate shaft can be achieved.
  • the bearing outer element can be releasably connected to the intermediate flange by at least one screw.
  • other means known to those skilled in the production of a detachable connection between the bearing outer element and the intermediate flange can be used.
  • the bearing plate for supporting the intermediate shaft has a bearing with a bearing inner element, which is integrally formed with an inner ring of at least one drive bearing and at least one ground ball raceway, whereby the bearing can be configured in a simple and space-saving.
  • bearing balls can absorb axial and radial forces occurring during operation by means of the ground ball raceway.
  • a "drive bearing” is to be understood as meaning, in particular, a bearing that can be connected to the intermediate shaft in a fixed manner or with a device provided for this purpose, which is intended to rotate the driven intermediate shaft into a reciprocating motion of another or at least one operating state other components of the hammer drill and / or chisel device.
  • the drive bearing is preferably provided together with a wobble drive for converting a rotational movement of a shaft, such as an intermediate shaft, into a reciprocating motion for generating an axial impact pulse.
  • the bearing plate for supporting the intermediate shaft comprises a bearing with a separate from an inner ring of a drive bearing intermediate piece, which has on an outer side an inner ball track of the bearing and is equipped on an inner side with a plain bearing for supporting the intermediate shaft.
  • the bearing can be designed to save space and cost.
  • the bearing balls can absorb forces occurring during operation in the axial and radial directions, and the inner plain bearing surface can advantageously support the intermediate shaft.
  • a particularly simple and compact solution can be provided if the separate intermediate piece produces a form-locking connection with at least one inner ring of a drive bearing.
  • the bearing plate for supporting the intermediate shaft comprises a bearing having a bearing inner element with at least one ball race, which is integrally formed with an inner ring of a first drive bearing and connected by a press connection with an inner ring of a second drive bearing.
  • the bearing plate for supporting the intermediate shaft on a bearing comprising a combination of a needle bearing and a thrust bearing, wherein an element of the needle bearing is integrally formed with an element of the thrust bearing.
  • the bearing plate for supporting the intermediate shaft has a bearing which, viewed in the axial direction, is arranged between two drive bearings of the intermediate shaft.
  • Fig. 1 shows a schematic representation of a hammer drill and Chisel réelle with a gear housing 10, a motor housing 12, a handle 16 and an actuating switch 18.
  • a gear housing 10 At the transition point between the motor housing 12 and the gear housing 10, an intermediate flange 20 is arranged, which projects into the gear housing 10.
  • a tool holder 22 is partially disposed in a striking mechanism tube 26 at a drilling direction end of the hammer drill and chisel device.
  • a percussion 24 within the gear housing 10 includes in addition to the percussion tube 26 in a known manner a firing pin 28, a guided in percussion tube 26, designed as a hollow piston 32 drive piston and guided in the hollow piston 32 racket 30.
  • the hollow piston 32 is formed on a trained as a wobble drive gear Hinged 34 which is driven by a formed as a toothed shaft intermediate shaft 36 of a motor housing 12 arranged in the engine 14.
  • An axial direction is determined by a direction of flight of the beater 30 in the hollow piston 32 during operation of the hammer drill and chisel device.
  • the striking mechanism 24, the motor 14 and the intermediate shaft 36 are each mounted parallel to the axial direction. Radial directions are defined as perpendicular to and from the axial direction.
  • Fig. 2 is a detail view of the gear housing 10 of the hammer drill and M adoptedeigiquess according to the Fig. 1 shown.
  • a bearing plate 38 is detachably connected, which is intended to support the intermediate shaft 36 and a component of the striking mechanism 24, namely the hollow piston 32.
  • In the axial direction of the bearing plate 38 is fixed by the intermediate flange 20.
  • the bearing plate 38 has an oversize in the axial direction, so that when mounting the bearing plate 38 between the intermediate flange 20 and the gear housing 10, a clamping by a permanently acting force in the axial direction is generated.
  • a trained as an inclined surface on an outer edge of the bearing plate 38 tension member 40 is provided to produce in at least one operating condition, a clamping of the bearing plate 38 in the radial direction between the intermediate flange 20 and the gear housing 10 and acts to such a paragraph 42 in the gear housing 10 and a closing edge 44 of the intermediate flange 20 together that generates a force acting in the axial direction during assembly permanently acting in the axial and radial direction clamping forces.
  • the bearing plate 38 is equipped with a sliding bearing 39 for mounting the hollow piston 32.
  • the bearing plate 38 has a bearing 46 with a bearing outer element 48, which is fitted into a recess 50 of the bearing plate 38.
  • a bearing inner element 52 of the bearing 46 is formed integrally with an inner ring 54 of the drive bearing 34 and has a ground ball raceway 56.
  • Fig. 3 shows a further embodiment of a bearing plate 58 for supporting an intermediate shaft 60.
  • the bearing plate 58 comprises for supporting the intermediate shaft 60, a bearing 62 with a separate from an inner ring 64 of a drive bearing 68 intermediate piece 72.
  • the intermediate piece 72 On an outer side, the intermediate piece 72 has an inner ball track 74 of the Camp 62 on.
  • the intermediate piece 72 is equipped with a sliding bearing 76 for supporting the intermediate shaft 60.
  • inner rings 64, 66 of two drive bearings 68, 70 are arranged in front of and behind the intermediate piece, with which the intermediate piece 72 forms a positive connection.
  • the bearing 62 for supporting the intermediate shaft 60 has a bearing outer element 78 which is releasably connected to an intermediate flange 80 by means of a screw connection.
  • a further embodiment of a bearing plate 82 for supporting an intermediate shaft 84 is shown.
  • the bearing plate 82 has for storage of the intermediate shaft 84, a bearing 86 which, viewed in the axial direction, between two drive bearings 88, 90 of the intermediate shaft 84 is arranged.
  • the bearing 86 for supporting the intermediate shaft 84 comprises a bearing inner element 92, which is formed integrally with an inner ring 94 of one of the two drive bearings 90.
  • the inner bearing element 92 has a ball track 96, and the inner ring 94 formed integrally with the inner bearing element 92 of one of the two drive bearings 90, which by means of a press connection with an inner ring 93 of the other of the two drive bearings 88 includes a further ball race 98 of the drive bearing 90.
  • the bearing 86 for supporting the intermediate shaft 84 has a bearing outer element 100 which is releasably connected to an intermediate flange 102 by means of a screw connection.
  • Fig. 5 shows a further embodiment of a bearing plate 104 for supporting an intermediate shaft 106.
  • the bearing plate 104 has for storage of the intermediate shaft 106 a bearing 108 which comprises a combination of a needle bearing 110 and a thrust bearing 112, in which a bearing element 114 of the needle bearing 110 integral with a bearing element 114 of the thrust bearing 112 is formed.
  • the bearing plate 104 is detachably connected to an intermediate flange 116 by means of a screw connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Percussion Or Vibration Massage (AREA)

Claims (10)

  1. Appareil de forage et/ou percussion avec un mécanisme de percussion (24) et un arbre intermédiaire (36 ; 60 ; 84 ; 106) qui sont respectivement logés pour l'essentiel parallèlement à une direction axiale et avec une boîte de vitesses (10) et une bride intermédiaire (20 ; 80 ; 102 ; 116),
    caractérisé en ce qu'un flasque (38 ; 58 ; 82 ; 104) qui est raccordé de manière à pouvoir être démonté à la bride intermédiaire (20 ; 80 ; 102 ; 116) et est prévu pour loger l'arbre intermédiaire (36 ; 60 ; 84 ; 106) et au moins un composant du mécanisme de percussion (24).
  2. Appareil de forage et/ou percussion selon la revendication 1 caractérisé en ce que le composant du mécanisme de percussion (24), qui est logé dans le flasque (38 ; 58 ; 82 ; 104), est un piston creux (32).
  3. Appareil de forage et/ou percussion selon la revendication 1 ou 2 caractérisé en ce que la bride intermédiaire (20 ; 80 ; 102 ; 116) fixe le flasque (38 ; 58 ; 82 ; 104) dans une direction axiale.
  4. Appareil de forage et/ou percussion selon l'une quelconque des revendications précédentes caractérisé en ce que le flasque (58 ; 82) destiné à loger l'arbre intermédiaire (60 ; 84) comporte un palier (62 ; 86) avec un élément extérieur de palier (78 ; 100) qui est raccordé à la bride intermédiaire (80 ; 102) de manière à pouvoir être démonté.
  5. Appareil de forage et/ou percussion selon l'une quelconque des revendications précédentes caractérisé en ce que le flasque (38 ; 82) destiné à loger l'arbre intermédiaire (36 ; 84) comporte un palier (46 ; 86) avec un élément intérieur de palier (52 ; 92) qui est formé en une seule pièce avec une bague intérieure (54 ; 94) d'au moins un palier d'entraînement (34 ; 88 ; 90) et comporte au moins un chemin de roulement à billes rodé (56 ; 96 ; 98).
  6. Appareil de forage et/ou percussion selon l'une quelconque des revendications précédentes caractérisé en ce que le flasque (58) destiné à loger l'arbre intermédiaire (60) comprend un palier (62) avec une pièce intermédiaire (72) séparée d'une bague intérieure (64, 66) d'un palier d'entraînement (68, 70), qui comporte sur son côté extérieur un chemin de roulement à billes intérieur (74) du palier (62) et est muni sur son côté intérieur d'un palier lisse (76) destiné à loger l'arbre intermédiaire (60).
  7. Appareil de forage et/ou percussion au moins selon la revendication 6 caractérisé en ce que la pièce intermédiaire (72) séparée établit une liaison par complémentarité de forme avec au moins une bague intérieure (64, 66) d'un palier d'entraînement (68, 70).
  8. Appareil de forage et/ou percussion selon l'une quelconque des revendications précédentes caractérisé en ce que le flasque (82) destiné à loger l'arbre intermédiaire (84) comprend un palier (86), qui comporte un élément intérieur de palier (92) avec au moins un chemin de roulement à billes (96, 98), qui est constitué d'une seule pièce avec une bague intérieure (94) d'un palier d'entraînement (88, 90) et est raccordé par emmanchement forcé à une bague intérieure (93) d'un deuxième palier d'entraînement (88, 90).
  9. Appareil de forage et/ou percussion selon l'une quelconque des revendications précédentes caractérisé en ce que le flasque (104) destiné à loger l'arbre intermédiaire (106) comporte un palier (108), qui comprend une combinaison d'un roulement à aiguilles (110) et d'un palier de butée (112), pour lequel un élément de palier (114) du roulement à aiguilles (110) est constitué en une seule pièce avec un élément de palier (114) du palier de butée (112).
  10. Appareil de forage et/ou percussion selon l'une quelconque des revendications précédentes caractérisé en ce que le flasque (58 ; 82) destiné à loger l'arbre intermédiaire (60 ; 84) comporte un palier (62 ; 86), qui pris en considération dans la direction axiale, est disposé entre deux paliers d'entraînement (68, 70 ; 88, 90) de l'arbre intermédiaire (60 ; 84).
EP10724336.2A 2009-07-09 2010-05-10 Appareil de forage et/ou percussion Active EP2451615B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910027560 DE102009027560A1 (de) 2009-07-09 2009-07-09 Bohrhammer- und/oder Meißelgerät
PCT/EP2010/056320 WO2011003646A1 (fr) 2009-07-09 2010-05-10 Appareil de perforation pneumatique et/ou de burinage

Publications (2)

Publication Number Publication Date
EP2451615A1 EP2451615A1 (fr) 2012-05-16
EP2451615B1 true EP2451615B1 (fr) 2015-09-16

Family

ID=42586095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10724336.2A Active EP2451615B1 (fr) 2009-07-09 2010-05-10 Appareil de forage et/ou percussion

Country Status (5)

Country Link
EP (1) EP2451615B1 (fr)
CN (1) CN102470523B (fr)
DE (1) DE102009027560A1 (fr)
RU (1) RU2538466C2 (fr)
WO (1) WO2011003646A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041889A1 (de) * 2008-09-09 2010-03-11 Robert Bosch Gmbh Werkzeugmaschine und Herstellverfahren für eine Werkzeugmaschine
DE102014101827A1 (de) 2014-02-13 2015-08-13 C. & E. Fein Gmbh Bohrmaschine und Bohrwerkzeug hierfür
WO2021115332A1 (fr) * 2019-12-09 2021-06-17 苏州宝时得电动工具有限公司 Marteau électrique

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1066884B (it) * 1976-08-09 1985-03-12 Star Utensili Elett Trapano del tipo a percussione
DE3731244A1 (de) * 1987-09-17 1989-03-30 Bosch Gmbh Robert Handwerkzeugmaschine
DE3931329C1 (fr) * 1989-05-31 1990-06-28 Robert Bosch Gmbh, 7000 Stuttgart, De
RU2064403C1 (ru) * 1993-04-15 1996-07-27 Юрий Никитович Колган Машина ударно-вращательного действия
DE19540391A1 (de) * 1995-10-30 1997-05-07 Hilti Ag Bohr- und Meisselgerät
RU2117572C1 (ru) * 1996-07-25 1998-08-20 Товарищество с ограниченной ответственностью "Внедренческое предприятие "Электрическая импульсная техника и технология" Электрическая машина ударно-вращательного действия
GB0125749D0 (en) * 2001-10-26 2001-12-19 Black & Decker Inc Power tool
DE10312981A1 (de) * 2003-03-24 2004-10-07 Robert Bosch Gmbh Elektrohandwerkzeugmaschine
CN1532015A (zh) * 2003-03-25 2004-09-29 罗伯特・博施有限公司 电动工具
JP2005040880A (ja) * 2003-07-25 2005-02-17 Hitachi Koki Co Ltd 打撃工具及び打撃工具の空打ち防止機構
DE102005047353A1 (de) * 2005-10-04 2007-04-05 Robert Bosch Gmbh Elektrowerkzeugmaschine
JP4756474B2 (ja) * 2006-07-20 2011-08-24 日立工機株式会社 電動工具
CN1899772A (zh) * 2006-07-25 2007-01-24 常州赛迪电气制造有限公司 多功能电锤
DE102007010177A1 (de) * 2007-03-02 2008-09-04 Robert Bosch Gmbh Getriebevorrichtung
DE102008000677A1 (de) * 2008-03-14 2009-09-17 Robert Bosch Gmbh Handwerkzeugmaschine für schlagend angetriebene Einsatzwerkzeuge

Also Published As

Publication number Publication date
EP2451615A1 (fr) 2012-05-16
CN102470523B (zh) 2015-09-09
RU2012103933A (ru) 2013-08-20
DE102009027560A1 (de) 2011-01-13
RU2538466C2 (ru) 2015-01-10
WO2011003646A1 (fr) 2011-01-13
CN102470523A (zh) 2012-05-23

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