EP2392432B2 - Meißelartiges Schlagwerkzeug - Google Patents

Meißelartiges Schlagwerkzeug Download PDF

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Publication number
EP2392432B2
EP2392432B2 EP11167455.2A EP11167455A EP2392432B2 EP 2392432 B2 EP2392432 B2 EP 2392432B2 EP 11167455 A EP11167455 A EP 11167455A EP 2392432 B2 EP2392432 B2 EP 2392432B2
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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
EP2392432B1 (de
EP2392432A1 (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
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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(B2) "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 present invention aims to improve the typing tools of the type considered here, with regard to their operation, this more particularly by improving the penetration into the material to work as well as the evacuation of debris, while strengthening the working capabilities of the tool in terms of volume of destroyed material, this by constructive arrangements concentrated on the single working head of the tool.
  • the object of the invention is a peak type striking tool according to claim 1.
  • the tool has for example four concave and helical working faces, which are connected according to four edges themselves of helical shape, which converge towards the tip of the tool.
  • the concave and helical working faces of the striking tool, object of the invention have the first effect of reducing the contact surfaces with the worked material, in the working area, so as to limit the phenomena opposing the penetration forces of the tool and to avoid the risk of blockage of the tool in "full matter".
  • the proposed configuration also makes it possible to concentrate the percussion forces along the helical edges, along which the working faces are connected. It should be noted that these working faces are connected together directly and along ridges which are simple lines and not conical surfaces, which also contributes to limiting the areas of contact with the worked material and the risks of blockage which would result
  • 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 occurs.
  • the venting effect for the removal of debris from the worked material is 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 relative to the zone. 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 concave working faces open out. and helical of said head.
  • the helical orientation of the working faces and ridges on the head of the tool also has the effect of generating lateral compression forces, which add to the percussion forces printed longitudinally to the tool during work. , which has the consequence of increasing the fragmentation power of the worked material.
  • the forces in rotation on the worked material are obtained, at the tip of the tool, by the support exerted on this material along the helical edges, located at the connection of the working faces, this support itself resulting from the axial translational movement printed to the tool by a percussion bias provided manually or by a motorized equipment of the portable or pneumatic type, for example of the kind hammer perforator.
  • 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 elongated body 2 comprises provisions 3 such as ribs or grooves, of a type known per se, for its adaptation to a power-driven or pneumatic material, suitable for printing with the striking tool (in progress). use) a percussion action oriented longitudinally, that is to say along the 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 working head 4, of pyramidal general shape comprises in the illustrated example four working faces 6, which are regularly distributed around the axis A and which converge towards the point 5, the four working faces 6 connecting the one to the other following four edges 7 which, too, converge towards the point 5.
  • the four working faces 6 each have a slightly concave shape, generated helically along the longitudinal axis A of the tool.
  • the four edges 7, according to which these working faces 6 are directly connected to each other, are themselves of helical shape, as shown in particular by the Figures 3 and 4 .
  • the working head 4 has a maximum diameter D1 at the base of its pyramidal portion. Behind the working head 4, the striking tool has a cylindrical zone 8 of reduced diameter D2, that is to say less than the maximum diameter D1 of the head.
  • the working faces 6 of the working head 4 open on the surface of the intermediate zone 9.
  • 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 material", while obtaining a concentration of the percussive forces along the helical edges 7 which are connected to the working faces 6.
  • the concavity of these working faces 6, and their outlet to the zone 8 of reduced diameter D2, further promote a vent effect for the evacuation of dust and debris from the worked material.

Landscapes

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

Claims (1)

  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 und dass das Schlagwerkzeug 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 und 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 EP2392432B1 (de) 2016-08-17
EP2392432B2 true 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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1010028A (en) † 1964-04-30 1965-11-17 Ingersoll Rand Co A percussively-operated tool bit and method of making same
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

Family Cites Families (9)

* 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
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
FR2098822A5 (de) * 1970-07-23 1972-03-10 Muller Sa
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
DE102007046759A1 (de) * 2007-09-28 2009-04-02 Robert Bosch Gmbh Meißel insbesondere für motorgetriebene Maschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1010028A (en) † 1964-04-30 1965-11-17 Ingersoll Rand Co A percussively-operated tool bit and method of making same
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

Also Published As

Publication number Publication date
EP2392432B1 (de) 2016-08-17
EP2392432A1 (de) 2011-12-07
FR2960811A1 (fr) 2011-12-09
FR2960811B1 (fr) 2013-03-29

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