EP0884138A2 - Marteau piqueur - Google Patents

Marteau piqueur Download PDF

Info

Publication number
EP0884138A2
EP0884138A2 EP98108228A EP98108228A EP0884138A2 EP 0884138 A2 EP0884138 A2 EP 0884138A2 EP 98108228 A EP98108228 A EP 98108228A EP 98108228 A EP98108228 A EP 98108228A EP 0884138 A2 EP0884138 A2 EP 0884138A2
Authority
EP
European Patent Office
Prior art keywords
guide tube
teeth
hammer drill
sleeve
machine housing
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
EP98108228A
Other languages
German (de)
English (en)
Other versions
EP0884138B1 (fr
EP0884138A3 (fr
Inventor
Karl Frauhammer
Schnerring
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 EP0884138A2 publication Critical patent/EP0884138A2/fr
Publication of EP0884138A3 publication Critical patent/EP0884138A3/fr
Application granted granted Critical
Publication of EP0884138B1 publication Critical patent/EP0884138B1/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
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0069—Locking means

Definitions

  • the invention relates to a hammer drill according to the The preamble of claim 1.
  • EP 0 429 475 A1 already known a hammer drill with pneumatic hammer mechanism, which is rotatably supported relative to a machine housing, depending on a tool pressure axially displaceable Guide tube has that with multiple vents is provided for ventilation of an air cushion. The Vents are in the working position of the Hammer drill covered by a closing member so that pressure can build up in the guide tube.
  • a Embodiment of the known hammer drill is one Fixed toothing provided for the rotation lock of the guide tube. For the fulfillment of the functions Idle control, rotation lock and storage are each different components required what the Manufacturing effort of the hammer drill increased.
  • the hammer drill according to the invention with the features of Claim 1 has the advantage that the Idle control of the striking mechanism and the rotation lock is effected with one and the same component, so that the Construction of the hammer drill simplified and size, weight and Costs are reduced.
  • FIG. 1 shows a partial section in Longitudinal direction of a rotary hammer
  • Figure 2 is a side view a multifunctional sleeve
  • Figure 3 shows a section along the line III-III in Figure 2
  • Figure 4 shows a section along line IV-IV in Figure 2
  • Figure 5 is a partial section through the hammer drill according to line V-V in Figure 1
  • Figure 6 is a section according Line VI-VI in Figure 5
  • Figure 7 is a partial section a manual gearbox of the hammer drill.
  • 10 denotes a hammer drill, which with a machine housing 11 is provided.
  • Machine housing 11 is a guide tube 12 rotatable and axially displaceable.
  • Piston 13 housed, the axially back and forth via a connecting rod 14 can be driven here.
  • the guide tube 12 is on its end facing away from the piston 13 with a Provide tool holder 15 into which a tool shank 16 a drilling tool is used.
  • a pop 20 and a striker 21 axially slidably arranged.
  • Via a between racket 20 and Piston 13 formed air cushion 22 is the racket 20 in Direction on the tool shank 16 accelerated, wherein impact energy via the striking block 21 the tool shank 16 is transmitted.
  • the guide tube 12 is in bearings 23, 24 with respect to Machine housing 11 mounted.
  • the bearing 23 is thereby by one piece on the machine housing 11 towards the inside projecting annular collar 231 formed, the one that Carrying tube 12 surrounding multifunctional sleeve 25 carries.
  • the Bearing point 24 is formed by a bearing ring 241 which at the same time as a front stop for the guide tube 12 serves.
  • a compression spring 28 is supported on the one hand collar 231 fixed to the housing and on the other hand on a shoulder 29 on the guide tube 12 and acts on the guide tube 12 with a restoring force towards one Idle position, in which the guide tube 12 over the Heel 29 is axially supported on the bearing ring 241.
  • the hammer drill 10 is in a striking position shown where the tool to a machining point is pressed.
  • the striker is over the tool shank 16 21 pushed towards a stop ring 30, the by means of a locking ring 31 with respect to the guide tube 12 is axially secured. Due to the pressure of the Operator becomes the guide tube 12 against the spring force 28 moved axially backwards until the paragraph 29 as in Figure 1 shown - on a fixed stop 32nd is present.
  • the guide tube 12 is with at least one Vent 36 provided in the example of several openings in the guide tube 12 is formed and is used to control idling.
  • 1 shown stroke position of the rotary hammer 10 are the Vent openings 36 from the multifunction sleeve 25 in Area of the bearing point 23 radially covered and therefore largely sealed.
  • Air cushion 22 By moving the piston 13 in the direction of the tool shank 16 can therefore Air cushion 22 are built.
  • the guide tube 29 axially forward in its Idle position in which the ventilation openings 36 are not are more covered by the multi-function sleeve 25.
  • the Air cushion 22 is then vented so that the hammer in the Idle passes.
  • the multifunction sleeve 25 is shown in FIGS. 2, 3 and 4 shown in more detail.
  • the multifunction sleeve 25 consists of a cylindrical base body 40 with a central Through hole 41, the bearing 23 for the Guide tube 12 forms.
  • On the outer circumference of the base body 40 are different teeth 42 arranged radially protruding serve different functions.
  • the long teeth 421 are each Short teeth 422 adjacent (see also Figure 4) with their tool-side end face form a stop face 45, which the multifunctional sleeve 25 axially in relation to the collar 231 Direction on the tool supports by going to the system a corresponding stop surface 232 comes on the collar 231.
  • the multi-function sleeve 25 in its in Collar 231 inserted or pressed in position shown are located in the collar between adjacent short teeth 422 231 continuous, axially parallel air compensation channels 48, the located between the guide tube 12 and the machine housing 11 Connect spaces 49, 50 together.
  • the Air equalization channels 48 are effective Impact operation of the hammer drill 10 is essential because of the in the guide tube 12 reciprocating striking parts Differences in pressure arise outside the guide tube 12 must be balanced. Serve this pressure equalization also additional compensating bores 51 in the guide tube 12.
  • FIG. 7 Another function of the multifunction sleeve 25 is from Figure 7 can be seen in which a gearbox 55 of the Rotary hammer 10 is shown. You can see one on the Guide tube 12 rotatably mounted bevel gear 56, which in Intervention with an engine not shown in detail driven bevel pinion 57 is.
  • a switching sleeve 68 is mounted axially displaceably on the guide tube 12. The Switching sleeve 68 engages with a toothing 69 in one Corresponding longitudinal toothing 65 in a switching ring 58. The switching ring 58 is always via a toothing 59, 60 is rotatably connected to the guide tube 12. The Axial displacement of the switching sleeve 68 takes place via a Actuator 61 to be operated by the operator.
  • the switching ring 58 has one Gear teeth 65 on that with a corresponding Drive teeth 66 on bevel gear 56 by axial displacement the switching sleeve 68 is rotatably coupled, in which the Teeth 69 of the switching sleeve 68 simultaneously in the Gear teeth 65 and engages in the drive teeth. In this way, the bevel gear 56 can then Switch ring 58 a torque on the guide tube 12th transfer.
  • the switching toothing 65 is designed such that an opposite shift of the shift sleeve 68 in Direction on the tool 69 with a toothing Locking toothing 67 can be brought into engagement.
  • the Locking teeth 67 is through the long teeth 421 and 422 formed in the area of the machine Front of the multi-function sleeve 25 is the same Have gear geometry. Because of the house-fixed The arrangement of the multi-function sleeve 25 is the guide tube 12 by simultaneous engagement in the gear teeth 65 and in the locking teeth 67 in different Lockable rotary positions.
  • the invention is not based on the illustrated Embodiment limited. Rather, it is with everyone Rotary hammers with pneumatic striking mechanism and axial sliding guide tube advantageously applicable, so too e.g. for rotary hammers with pot piston striking mechanism.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)
EP19980108228 1997-06-11 1998-05-06 Marteau piqueur Expired - Lifetime EP0884138B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997124531 DE19724531B4 (de) 1997-06-11 1997-06-11 Bohrhammer
DE19724531 1997-06-11

Publications (3)

Publication Number Publication Date
EP0884138A2 true EP0884138A2 (fr) 1998-12-16
EP0884138A3 EP0884138A3 (fr) 2002-11-20
EP0884138B1 EP0884138B1 (fr) 2006-08-02

Family

ID=7832094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980108228 Expired - Lifetime EP0884138B1 (fr) 1997-06-11 1998-05-06 Marteau piqueur

Country Status (3)

Country Link
EP (1) EP0884138B1 (fr)
CN (1) CN1094553C (fr)
DE (2) DE19724531B4 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1215016A1 (fr) * 2000-12-12 2002-06-19 HILTI Aktiengesellschaft Marteau perforateur avec tube rotatif pour le guidage du piston
WO2002092291A1 (fr) * 2001-05-11 2002-11-21 Robert Bosch Gmbh Machine-outil manuelle
WO2003045636A1 (fr) * 2001-11-16 2003-06-05 Robert Bosch Gmbh Machine-outil a main pourvue d'un systeme de percussion pneumatique
WO2004060616A1 (fr) * 2002-12-24 2004-07-22 Robert Bosch Gmbh Marteau perforateur
WO2005087446A1 (fr) * 2004-03-13 2005-09-22 Robert Bosch Gmbh Machine-outil portative
WO2006034899A1 (fr) * 2004-09-30 2006-04-06 Robert Bosch Gmbh Machine-outil a main notamment marteau perforateur et/ou percuteur
DE102007020157A1 (de) 2007-04-26 2008-10-30 Kinetix Ag Vorrichtung zum Aufhängen von Gegenständen
DE102007022454A1 (de) 2007-05-10 2008-11-13 Kinetix Ag Vorrichtung zum Aufhängen von Gegenständen
DE102007045171A1 (de) 2007-09-20 2009-04-02 Kinetix Ag Vorrichtung zum Aufhängen von Gegenständen
CN102281995A (zh) * 2008-11-20 2011-12-14 山特维克矿山工程机械有限公司 钻岩机及轴向轴承模块
EP2711136A1 (fr) * 2012-09-21 2014-03-26 Black & Decker Inc. Marteau perforateur
US9873192B2 (en) 2013-12-11 2018-01-23 Black & Decker Inc. Rotary hammer

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10019071A1 (de) * 2000-04-18 2001-10-25 Hilti Ag Elekrohandwerkzeuggerät mit Leerschlagabschaltung
DE10145464C2 (de) 2001-09-14 2003-08-28 Wacker Construction Equipment Bohr- und/oder Schlaghammer mit anpressdruckabhängiger Leerlaufsteuerung
JP4016772B2 (ja) * 2001-11-16 2007-12-05 日立工機株式会社 ハンマドリル
FI121220B (fi) 2008-11-20 2010-08-31 Sandvik Mining & Constr Oy Kallioporakone ja aksiaalilaakerimoduuli
DE102009050013A1 (de) * 2009-10-21 2011-04-28 Metabowerke Gmbh Motorisch angetriebens Werkzeuggerät
CN103223660B (zh) * 2013-05-15 2015-02-25 长沙矿山研究院有限责任公司 一种销套式液压冲击器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290492A (en) * 1979-01-31 1981-09-22 Black & Decker Inc. Idling and air replenishing system for a reciprocating hammer mechanism
US4476941A (en) * 1982-06-29 1984-10-16 Robert Bosch Gmbh Motor-driven hand-held percussion tool
US5111890A (en) * 1988-08-02 1992-05-12 Robert Bosch Gmbh Hammer drill

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182421A (en) * 1973-08-24 1980-01-08 Institut Gornogo Dela Akademii Nauk Kazakhskoi Ssr Pneumatic rock drill
US3870113A (en) * 1974-02-14 1975-03-11 Newell E Slawson Pneumatic drill apparatus
CN1014859B (zh) * 1987-11-17 1991-11-27 王淑霞 用蛇尾部五至八寸处提取抗癌药的工艺
CN1038525C (zh) * 1992-09-22 1998-05-27 张启风 旋转冲击凿岩机的冲击装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290492A (en) * 1979-01-31 1981-09-22 Black & Decker Inc. Idling and air replenishing system for a reciprocating hammer mechanism
US4476941A (en) * 1982-06-29 1984-10-16 Robert Bosch Gmbh Motor-driven hand-held percussion tool
US5111890A (en) * 1988-08-02 1992-05-12 Robert Bosch Gmbh Hammer drill

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1215016A1 (fr) * 2000-12-12 2002-06-19 HILTI Aktiengesellschaft Marteau perforateur avec tube rotatif pour le guidage du piston
WO2002092291A1 (fr) * 2001-05-11 2002-11-21 Robert Bosch Gmbh Machine-outil manuelle
DE10122820A1 (de) * 2001-05-11 2002-11-21 Bosch Gmbh Robert Handwerkzeugmaschine
US6810969B2 (en) 2001-05-11 2004-11-02 Robert Bosch Gmbh Hand machine tool
US7040413B2 (en) 2001-11-16 2006-05-09 Robert Bosch Gmbh Hand power tool with a pneumatic striking mechanism
WO2003045636A1 (fr) * 2001-11-16 2003-06-05 Robert Bosch Gmbh Machine-outil a main pourvue d'un systeme de percussion pneumatique
WO2004060616A1 (fr) * 2002-12-24 2004-07-22 Robert Bosch Gmbh Marteau perforateur
US7121359B2 (en) 2002-12-24 2006-10-17 Robert Bosch Gmbh Drilling hammer having an external mechanism for selectively switching operation between impact drilling and chiseling modes
WO2005087446A1 (fr) * 2004-03-13 2005-09-22 Robert Bosch Gmbh Machine-outil portative
US7497272B2 (en) 2004-03-13 2009-03-03 Robert Bosch Gmbh Hand-held power tool
WO2006034899A1 (fr) * 2004-09-30 2006-04-06 Robert Bosch Gmbh Machine-outil a main notamment marteau perforateur et/ou percuteur
DE102007020157A1 (de) 2007-04-26 2008-10-30 Kinetix Ag Vorrichtung zum Aufhängen von Gegenständen
DE102007022454A1 (de) 2007-05-10 2008-11-13 Kinetix Ag Vorrichtung zum Aufhängen von Gegenständen
DE102007045171A1 (de) 2007-09-20 2009-04-02 Kinetix Ag Vorrichtung zum Aufhängen von Gegenständen
CN102281995A (zh) * 2008-11-20 2011-12-14 山特维克矿山工程机械有限公司 钻岩机及轴向轴承模块
CN102281995B (zh) * 2008-11-20 2014-09-10 山特维克矿山工程机械有限公司 钻岩机及轴向轴承模块
EP2711136A1 (fr) * 2012-09-21 2014-03-26 Black & Decker Inc. Marteau perforateur
US9498874B2 (en) 2012-09-21 2016-11-22 Black & Decker Inc. Hammer drill
US9873192B2 (en) 2013-12-11 2018-01-23 Black & Decker Inc. Rotary hammer

Also Published As

Publication number Publication date
DE19724531B4 (de) 2005-07-14
EP0884138B1 (fr) 2006-08-02
CN1201864A (zh) 1998-12-16
DE19724531A1 (de) 1998-12-17
DE59813670D1 (de) 2006-09-14
CN1094553C (zh) 2002-11-20
EP0884138A3 (fr) 2002-11-20

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