EP3195987A1 - Outil - Google Patents

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Publication number
EP3195987A1
EP3195987A1 EP16189390.4A EP16189390A EP3195987A1 EP 3195987 A1 EP3195987 A1 EP 3195987A1 EP 16189390 A EP16189390 A EP 16189390A EP 3195987 A1 EP3195987 A1 EP 3195987A1
Authority
EP
European Patent Office
Prior art keywords
stem
head
radii
circular arcs
symmetry
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.)
Withdrawn
Application number
EP16189390.4A
Other languages
German (de)
English (en)
Inventor
Florian MUENSTER
Stefan ALTMUELLER
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.)
Gedore-Werkzeugfabrik & Co KG GmbH
Original Assignee
Gedore-Werkzeugfabrik & Co KG 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 Gedore-Werkzeugfabrik & Co KG GmbH filed Critical Gedore-Werkzeugfabrik & Co KG GmbH
Publication of EP3195987A1 publication Critical patent/EP3195987A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/04—Socket, tang, or like fixings with detachable or separate socket pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D1/00—Hand hammers; Hammer heads of special shape or materials
    • B25D1/14—Hand hammers; Hammer heads of special shape or materials having plural striking faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/12—Locking and securing devices
    • B25G3/28—Locking and securing devices comprising wedges, keys, or like expanding means

Definitions

  • the invention relates to a tool with a handle and a, a striking surface and / or a cutting blade having head, wherein the stem passes through a protective sleeve and is inserted with one end in an opening in the head such that an end face of the protective sleeve on a surface of the head rests and wherein a screw engages in the longitudinal direction of the stem extending into the stem, which preferably passes through a locking plate and an annular wedge inserted into the stem.
  • the EP 0 703 045 A1 Such a tool, which consists of a standardized tool handle made of wood, on which a hardened protective sleeve is pressed. The tool handle is further connected to a hammer head. Furthermore, it is provided that the tool handle is spread by hammering a ring wedge and secured in the hammer eye. A hardened locking plate, which is larger than the dimension of the hammer eye, is connected by screwing a wood screw in the wooden handle with the hammer head and the tool handle.
  • the DE 10 2013 002 492 U1 a device for secure attachment of a wooden handle in the hammer eye of a hammer head by means of a screw including screw head and a wood screw thread and means for displacing the wood material known.
  • the one-piece screw for attaching the wooden handle has a trained as a disc head screw head that the disc head is provided with such a large diameter that he can not pass the hammer eye and that the disc head as a wedge replacement an adjoining, a displacement of wood material causing cone area and a has separate, cylindrical Holzschraubgewinde Symposium.
  • the screw is designed to be very short, so that it barely engages further into the tool handle than the hammer head is placed on the tool handle. Basically, this is also only a conventional wood screw with a threaded portion and arranged between the threaded portion and the screw head area without thread.
  • the present invention seeks to provide a tool in which the head is connected in a simple but secure manner with the stem, for which purpose a device is used, which can be produced in a simple manner and at the same time a secure Spreading the stem in the area of the hammer eye allows.
  • annular wedge is formed in cross section of circular arcs and has two mutually perpendicular symmetry axes, with radii of the circular arcs on the symmetry axes aligned at right angles to each other have different lengths.
  • the object is achieved in a ring wedge for such a tool according to the fact that the body in cross section has a formed of circular arcs surface shape, wherein the surface shape has two orthogonal symmetry axes and radii of the circular arcs, which are different in the direction of the symmetry axes aligned at right angles to each other Have lengths.
  • the annular wedge is thus designed to be mirror-symmetrical with respect to two axes of symmetry. Due to the configuration of the ring wedge in cross-section of circular arcs and the design of the radii of the circular arcs, which coincide with the symmetry axes aligned at right angles to each other, with different lengths results a substantially oval or oval-like surface shape of the cross section of the ring wedge.
  • each axis of symmetry has identical radii of the circular arcs, so that at two mutually perpendicular axes of symmetry, which intersect in the center of the surface shape of the ring wedge two radii identical length, the radii of the two axes of symmetry perpendicular to each other are aligned.
  • the surface shape of the ring wedge does not necessarily have to be strictly oval. There are also other surface shapes conceivable that contribute to the fact that by the hammering of the ring wedge a spread of the stem is made, over the ring wedge a high surface pressure between the hammer eye and the inserted into the hammer eye end of the stem is generated so that the Head firmly fixed on the hammer handle. The attachment takes place frictionally.
  • the radii of the circular arcs are preferably continuously decreasing or increasingly formed between two symmetry axes oriented at right angles to each other. That is, starting from a first axis of symmetry on which a radius falls, an angle range is swept up to the second axis of symmetry, which is oriented perpendicular to the first axis of symmetry, and the radii arranged between these two radii on the symmetry axes depend on the output in equal steps decrease or increase in equal increments, the steps being angular units. This then results in a basically strict oval shape of the ring wedge.
  • This surface shape of the ring wedge has the effect that in the spreading of the stem with round cross section, the surface pressure between the stem and the inner wall of the hammer eye is formed higher in the direction of the longer radii on the axis of symmetry, as in the direction of the shorter radii, which is aligned at right angles are.
  • a substantially uniform surface pressure is achieved over the entire circumference of the stem inserted in the hammer eye.
  • the securing plate has an area coinciding with the cross section of the annular wedge and corresponding radii, which are formed with respect to the corresponding radii of the annular wedge with greater length. Accordingly, results from the backup plate and the ring wedge in a longitudinal section, that is in Longitudinal axis direction of the ring wedge, a T-shaped unit. It should be noted, however, that ring wedge and locking plate can both be integrally formed with each other, as well as can be installed separately. The fixation of the separately to be installed backup plate and the ring wedge then takes place via engaging in the longitudinal axis direction of the stem screw.
  • the backup plate of course has a corresponding hole into which the screw is inserted, such that the screw head is flush with the free surface of the backup plate.
  • the annular wedge is frusto-conical, so that it widens in the direction of the locking plate.
  • the securing plate preferably has, in its surface facing the handle, at least one, preferably two, projections for engagement in an end face of the handle.
  • This particular wedge-shaped projections serve to fix and center the end face relative to the central axis of the stem.
  • the backup plate may at least partially have a surface shape formed by a closed polygon.
  • the backup plate for example, cover the entire face of the style and avoid, for example, the entry of moisture into the stem. Furthermore, manipulation or damage of the handle in this area is made difficult or prevented by the full-surface coverage of the end face of the stem, in particular made of wood.
  • the stem has an end face at its end inserted into the opening in the head, which is flush with the head and that the backup plate has at least in some areas opposite the end face greater extent and thus part of the area the head rests.
  • Fig. 1 shows a tool 1, which consists of a handle 2 with a substantially oval cross section and a head 3, wherein the head 3 has two impact surfaces 4 and an opening 5 for receiving an end 6 of the stem 2.
  • the head 3 is made of a heavy weight iron metal.
  • the tool 1 according to Fig. 1 a protective sleeve 7, which of the stem 2 according to Fig. 3 is penetrated, so that the protective sleeve 7 rests with an end face 8 on a surface 9 of the head 3.
  • the handle 2 terminates with its end 6 flush with a surface 10 of the head 3, which is aligned parallel to the surface 9 extending.
  • the protective sleeve 7 is made of metal and is adapted in cross-section to the cross-sectional shape of the stem 2, for this purpose a region 11 with a reduced diameter relative to the stem 2, so that a collar 12 is formed, to which the protective sleeve 7 with her second, the head 3 remote end comes to rest.
  • the collar 12 is designed such that the outer circumferential surface of the protective sleeve 7 is flush with the outer circumferential surface of the stem 2.
  • a fastening element 13 is provided which is formed from a ring wedge 14 and a locking plate 15.
  • ring member 14 and locking plate are integrally formed, thus resulting in the fastener 13th
  • the annular wedge 14 is frusto-conical and has a longitudinal axis extending opening for receiving a screw 16 which is screwed through the annular wedge 14 in the longitudinal axis direction in the stem 2, wherein the length of the screw 16 is greater than the engaging in the head 3 End 6 of the stem 2.
  • the screw 6 ends in the screwed state in the lower half of the protective sleeve 7 which is defined by the fact that this is half, which is arranged facing away from the head 3.
  • annular wedge 14 is formed with a short length, so that the annular wedge 14 ends with its driven into the stem 2 end in the region of the end 6 of the stem 2, which engages in the opening 5 of the head 3.
  • the annular wedge 14 is oval in cross section, so that it is formed in cross section of circular arcs and has two symmetry axes aligned at right angles to each other.
  • radii of the circular arcs are provided which have different lengths on the axes of symmetry aligned at right angles to each other.
  • Each axis of symmetry in this case has two radii of the circular arcs, which are identical, so that the radii of the symmetry axes arranged at right angles to each other are formed differently.
  • securing plate 15 completely covers the end surface of the stem 2, which is flush with the surface 10, and moreover bears against the surface 10 of the head 3 with an edge region.
  • FIGS. 4 to 6 a second embodiment of the tool 1 according to the invention is shown, wherein matching reference numerals are used for matching construction elements.
  • the fastening element 13 is formed in two parts, so that ring wedge 14 and locking plate 15 are not connected to each other.
  • the securing plate 15 has a surface shape of a closed polygon, which in turn has approximately an oval shape.
  • the securing plate 15 on its the handle 2 facing surface 17, two projections 18 for engagement in the end face of the stem 2.
  • the projections 18 are in this case thorn-shaped, so that they can be driven in a simple manner in the end face of the stem 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP16189390.4A 2015-12-21 2016-09-19 Outil Withdrawn EP3195987A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202015106961.8U DE202015106961U1 (de) 2015-12-21 2015-12-21 Werkzeug

Publications (1)

Publication Number Publication Date
EP3195987A1 true EP3195987A1 (fr) 2017-07-26

Family

ID=55802616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16189390.4A Withdrawn EP3195987A1 (fr) 2015-12-21 2016-09-19 Outil

Country Status (2)

Country Link
EP (1) EP3195987A1 (fr)
DE (1) DE202015106961U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110774235A (zh) * 2019-11-11 2020-02-11 徐州欧百瑞智能设备有限公司 一种设备维修用手锤

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3079156B1 (fr) * 2018-03-21 2020-02-28 Mob Mondelin Sas Procede de fabrication d'un outil de frappe

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1501095A (en) * 1923-05-23 1924-07-15 George F Brock Hammer
GB676394A (en) * 1950-07-07 1952-07-23 Josef Sochor Wedge connection for securing hand tools to handles and for like purposes
GB996400A (fr) * 1962-10-20 1965-06-30 Guenter Schwarz
GB1023759A (en) * 1964-07-31 1966-03-23 Mario Mainetti Plastics tool handle
US3393720A (en) * 1967-09-11 1968-07-23 John M. Fenlin Portable impact tools
DE3300988A1 (de) * 1982-03-15 1983-09-22 Veb Werkzeugkombinat Schmalkalden, Ddr 6080 Schmalkalden Befestigungskeil fuer werkzeugstiele, insbesondere fuer schlosserhaemmer
DE8325957U1 (de) * 1983-09-09 1984-05-17 Carl Dan. Peddinghaus Gmbh & Co Kg, 5828 Ennepetal Handhammer
DE3307969A1 (de) * 1983-03-07 1984-09-13 Maiwald-Befestigungsbedarf, 5902 Netphen Vorrichtung zum befestigen eines werkzeugstiels
US4753137A (en) * 1987-04-01 1988-06-28 Kennedy Thomas W Hand tool, such as a sledgehammer, with replaceable head
DE9414187U1 (de) * 1994-08-30 1995-01-26 Fa. Hermann Bremer, 42369 Wuppertal Genormter Werkzeugstiel aus Holz mit gehärteter Schutzhülse und zusätzlicher Befestigungssicherung
WO1996035554A1 (fr) * 1995-05-10 1996-11-14 Keathley Bob N Systeme de tete d'outil de percussion et manche allonge commun pour ensembles a multiples tetes d'outils
US20060123601A1 (en) * 2004-01-10 2006-06-15 Zubiaurre Pedro J Handle connection for a manual utensil or tool
EP1987927A1 (fr) * 2006-02-16 2008-11-05 Pedro José Zubiaurre Alberdi Fixation du manche d'un ustensile ou d'un outil manuel
DE102013002492A1 (de) 2012-02-16 2013-08-22 Joh. Hermann Picard Gmbh & Co. Kg Vorrichtung zur sicheren Befestigung eines Holzstieles im Hammerauge eines Hammerkopfes sowie Schraube zur Befestigung eines Holzstieles im Hammerauge eines Hammerkopfes

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1501095A (en) * 1923-05-23 1924-07-15 George F Brock Hammer
GB676394A (en) * 1950-07-07 1952-07-23 Josef Sochor Wedge connection for securing hand tools to handles and for like purposes
GB996400A (fr) * 1962-10-20 1965-06-30 Guenter Schwarz
GB1023759A (en) * 1964-07-31 1966-03-23 Mario Mainetti Plastics tool handle
US3393720A (en) * 1967-09-11 1968-07-23 John M. Fenlin Portable impact tools
DE3300988A1 (de) * 1982-03-15 1983-09-22 Veb Werkzeugkombinat Schmalkalden, Ddr 6080 Schmalkalden Befestigungskeil fuer werkzeugstiele, insbesondere fuer schlosserhaemmer
DE3307969A1 (de) * 1983-03-07 1984-09-13 Maiwald-Befestigungsbedarf, 5902 Netphen Vorrichtung zum befestigen eines werkzeugstiels
DE8325957U1 (de) * 1983-09-09 1984-05-17 Carl Dan. Peddinghaus Gmbh & Co Kg, 5828 Ennepetal Handhammer
US4753137A (en) * 1987-04-01 1988-06-28 Kennedy Thomas W Hand tool, such as a sledgehammer, with replaceable head
DE9414187U1 (de) * 1994-08-30 1995-01-26 Fa. Hermann Bremer, 42369 Wuppertal Genormter Werkzeugstiel aus Holz mit gehärteter Schutzhülse und zusätzlicher Befestigungssicherung
EP0703045A1 (fr) 1994-08-30 1996-03-27 Bremer, Hermann Manche standard en bois avec un manchon de protection trempé et un dispositif supplémentaire pour assurer la fixation
WO1996035554A1 (fr) * 1995-05-10 1996-11-14 Keathley Bob N Systeme de tete d'outil de percussion et manche allonge commun pour ensembles a multiples tetes d'outils
US20060123601A1 (en) * 2004-01-10 2006-06-15 Zubiaurre Pedro J Handle connection for a manual utensil or tool
EP1987927A1 (fr) * 2006-02-16 2008-11-05 Pedro José Zubiaurre Alberdi Fixation du manche d'un ustensile ou d'un outil manuel
DE102013002492A1 (de) 2012-02-16 2013-08-22 Joh. Hermann Picard Gmbh & Co. Kg Vorrichtung zur sicheren Befestigung eines Holzstieles im Hammerauge eines Hammerkopfes sowie Schraube zur Befestigung eines Holzstieles im Hammerauge eines Hammerkopfes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110774235A (zh) * 2019-11-11 2020-02-11 徐州欧百瑞智能设备有限公司 一种设备维修用手锤
CN110774235B (zh) * 2019-11-11 2023-07-14 徐州欧百瑞智能设备有限公司 一种设备维修用手锤

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