EP2392432B1 - Meißelartiges Schlagwerkzeug - Google Patents

Meißelartiges Schlagwerkzeug Download PDF

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Publication number
EP2392432B1
EP2392432B1 EP11167455.2A EP11167455A EP2392432B1 EP 2392432 B1 EP2392432 B1 EP 2392432B1 EP 11167455 A EP11167455 A EP 11167455A EP 2392432 B1 EP2392432 B1 EP 2392432B1
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EP
European Patent Office
Prior art keywords
tool
working
faces
head
helical
Prior art date
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Active
Application number
EP11167455.2A
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English (en)
French (fr)
Other versions
EP2392432A1 (de
EP2392432B2 (de
Inventor
Pierre Rigolet
François DEFOUGERES
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.)
Diager SAS
Original Assignee
Diager SAS
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.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43382492&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2392432(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Diager SAS filed Critical Diager SAS
Publication of EP2392432A1 publication Critical patent/EP2392432A1/de
Publication of EP2392432B1 publication Critical patent/EP2392432B1/de
Application granted granted Critical
Publication of EP2392432B2 publication Critical patent/EP2392432B2/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D3/00—Hand chisels
    • 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
    • B25D17/02—Percussive tool bits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/72—Stone, rock or concrete
    • 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
    • B25D2250/305—Twisted part of a chisel or percussive non-drilling tool bit

Definitions

  • the present invention relates to a striking tool commonly called "peak”, according to the preamble of claim 1, which can be used manually or with a power tool or pneumatic generating a percussion action and being a rod provided, to one of its ends, a tip-shaped working head designed to fragment stony type materials.
  • Such a typing tool is known from the document DE 101 33 948 A1 .
  • the spike type striking tools generally have a pyramidal work head, with triangular plane working faces, for example four or six faces, which converge towards a point located on the axis. longitudinal axis of the tool.
  • triangular plane working faces for example four or six faces, which converge towards a point located on the axis. longitudinal axis of the tool.
  • planar faces are likely to constitute a brake against the insertion of the tool into the material to be worked, the support of the tool on the material being made according to plans.
  • This braking phenomenon can even lead to blockages of the tool in "full material", in difficult working conditions, for example when the head of the tool is deeply inserted into the material to be worked.
  • Such disadvantages are possibly limited by arranging the faces and edges of work, at the tip of the tool, as described for example in the document DE 10133948 supra.
  • the working faces that end at the tip are odd, as well as the edges separating these faces from each other, the working faces being for example three or five in number, which allows each face being diametrically opposed to an edge, such a configuration being supposed to limit the braking forces of the tool during work.
  • the innovation is a spike type striking tool, having an elongated rod-shaped body provided at one end with a working head with a series of working faces distributed around the spindle. longitudinal axis of the tool and converging towards a point located on this axis, this striking tool being characterized in that the working faces, which converge towards the tip, are concave faces generated helically, along the axis longitudinal of the tool, these working faces being directly connected to each other along ridges themselves helical, which converge towards the tip of the tool.
  • the configuration of the working faces promotes a venting effect for the removal of dust and debris from the worked material, generated in the "downhole" work area where the splitting of this material.
  • the venting effect for the evacuation of debris from the worked material can be reinforced by providing that the striking tool has, at the rear of the working head with concave and helical faces, a zone of reduced diameter compared to the zone of maximum diameter of the working head.
  • the transition between this zone of maximum diameter of the working head and the zone of reduced diameter, situated behind this head is formed by an intermediate zone, in particular of frustoconical shape, on the surface of which the faces of concave and helical work of said head.
  • the striking tool called "peak”, shown in the drawing, has an elongate body 2 in the form of a cylindrical rod, defining a longitudinal axis A.
  • the elongate body 2 comprises a working head 4, ending in a point 5 located on the longitudinal axis A of the tool.
  • the striking tool has a diameter D3 again greater than the diameter D2 of the zone 8, the diameter D3 being the current diameter of the elongate body 2 of the tool.
  • the concave and helical working faces 6 and the helical edges 7 for connecting these faces reduce the contact surfaces in the working zone, so as to limit the oppositions to the penetration forces of the tool as well as the risks of blockage in "full matter", while obtaining a concentration of the percussive forces along the helical edges 7 according to which The concavity of these working faces 6, and their opening to the zone 8 of reduced diameter D2, further promote a venting effect for the removal of dust and debris from the worked material.

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

Claims (3)

  1. Schlagwerkzeug, in der Art einer Spitze, das einen länglichen Korpus (2) in Form eines Stifts besitzt, der an einem Ende mit einem Arbeitskopf (4) mit einer Reihe von Arbeitsflächen (6) versehen ist, die um die Längsachse (A) des besagten Werkzeugs verteilt sind, und in einer Spitze (5) zusammenlaufen, die sich auf dieser Achse befindet, dadurch gekennzeichnet, dass die Arbeitsflächen (6), die zur Spitze (5) zusammenlaufen, konkave Flächen sind, die spiralförmig entlang der Längsachse (A) des Werkzeugs erzeugt werden, wobei diese Arbeitsflächen (6) entlang von Kanten (7) direkt aneinander anschließen, die selbst eine spiralförmige Form aufweisen, und zur Spitze (5) des Werkzeugs zusammenlaufen.
  2. Schlagwerkzeug, in der Art einer Spitze, nach Anspruch 1, dadurch gekennzeichnet, dass es hinter dem Arbeitskopf (4) mit konkaven und spiralförmigen Flächen (6) eine Zone (8) mit einem geringeren Durchmesser (D2) im Verhältnis zur Zone mit dem maximalen Durchmesser (D1) des Arbeitskopfes (4) aufweist.
  3. Schlagwerkzeug, in der Art einer Spitze, nach Anspruch 2, dadurch gekennzeichnet, dass der Übergang zwischen der Zone mit dem maximalen Durchmesser (D1) des Arbeitskopfes (4) und der Zone mit einem geringeren Durchmesser (D2), die sich hinter diesem Kopf befindet, durch eine Zwischenzone (9), vor allem in Kegelstumpfform gebildet wird, in deren Oberfläche die konkaven und spiralförmigen Arbeitsflächen (6) des besagten Kopfes münden.
EP11167455.2A 2010-06-02 2011-05-25 Meißelartiges Schlagwerkzeug Active EP2392432B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1054284A FR2960811B1 (fr) 2010-06-02 2010-06-02 Outil de frappe du genre pic

Publications (3)

Publication Number Publication Date
EP2392432A1 EP2392432A1 (de) 2011-12-07
EP2392432B1 true EP2392432B1 (de) 2016-08-17
EP2392432B2 EP2392432B2 (de) 2019-10-23

Family

ID=43382492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11167455.2A Active EP2392432B2 (de) 2010-06-02 2011-05-25 Meißelartiges Schlagwerkzeug

Country Status (2)

Country Link
EP (1) EP2392432B2 (de)
FR (1) FR2960811B1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE463571C (de) 1928-08-01 Ed Doerrenberg Soehne Ohg Mehrkantiges Spitzeisen fuer Abbauhaemmer
GB1010028A (en) 1964-04-30 1965-11-17 Ingersoll Rand Co A percussively-operated tool bit and method of making same
FR2098822A5 (de) 1970-07-23 1972-03-10 Muller Sa
DE19914522A1 (de) 1999-03-30 2000-10-05 Wacker Werke Kg Brechwerkzeug, insbesondere Meißel für maschinell angetriebene Schlagwerkzeuge
WO2001036163A1 (de) 1999-11-17 2001-05-25 Hawera Probst Gmbh Meissel
DE202004012846U1 (de) 2004-08-16 2004-10-14 Wacker Construction Equipment Ag Brechwerkzeug mit Nuten zur verbesserten Spaltwirkung
WO2009043617A1 (de) 2007-09-28 2009-04-09 Robert Bosch Gmbh Meissel insbesondere für motorgetriebene maschinen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302069A (en) * 1938-04-07 1942-11-17 Sullivan Machinery Co Material breaking implement
FR1154607A (fr) * 1955-07-04 1958-04-14 Aiguille pour marteau-piqueur
US5107911A (en) * 1991-05-06 1992-04-28 Plakotaris Vincent A Log splitting device
IT239729Y1 (it) * 1996-04-26 2001-03-13 Giovanni Battista Andrina Utensili per martelli demolitori con profilo speciale.
DE10133948A1 (de) 2001-07-17 2003-02-06 Hawera Probst Gmbh Spitzmeissel 3-seitige Schneide
US7503628B2 (en) * 2006-09-01 2009-03-17 Hall David R Formation breaking assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE463571C (de) 1928-08-01 Ed Doerrenberg Soehne Ohg Mehrkantiges Spitzeisen fuer Abbauhaemmer
GB1010028A (en) 1964-04-30 1965-11-17 Ingersoll Rand Co A percussively-operated tool bit and method of making same
FR2098822A5 (de) 1970-07-23 1972-03-10 Muller Sa
DE19914522A1 (de) 1999-03-30 2000-10-05 Wacker Werke Kg Brechwerkzeug, insbesondere Meißel für maschinell angetriebene Schlagwerkzeuge
WO2001036163A1 (de) 1999-11-17 2001-05-25 Hawera Probst Gmbh Meissel
DE202004012846U1 (de) 2004-08-16 2004-10-14 Wacker Construction Equipment Ag Brechwerkzeug mit Nuten zur verbesserten Spaltwirkung
WO2009043617A1 (de) 2007-09-28 2009-04-09 Robert Bosch Gmbh Meissel insbesondere für motorgetriebene maschinen

Also Published As

Publication number Publication date
FR2960811B1 (fr) 2013-03-29
EP2392432A1 (de) 2011-12-07
FR2960811A1 (fr) 2011-12-09
EP2392432B2 (de) 2019-10-23

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