EP2170562B1 - Porte-outil pour un outil électrique, en particulier pour un marteau burineur et/ou un marteau perforateur - Google Patents

Porte-outil pour un outil électrique, en particulier pour un marteau burineur et/ou un marteau perforateur Download PDF

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Publication number
EP2170562B1
EP2170562B1 EP08736441A EP08736441A EP2170562B1 EP 2170562 B1 EP2170562 B1 EP 2170562B1 EP 08736441 A EP08736441 A EP 08736441A EP 08736441 A EP08736441 A EP 08736441A EP 2170562 B1 EP2170562 B1 EP 2170562B1
Authority
EP
European Patent Office
Prior art keywords
tool
locking
tool holder
locking elements
holder according
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
EP08736441A
Other languages
German (de)
English (en)
Other versions
EP2170562A2 (fr
Inventor
Willy Braun
Christian Koepf
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 EP2170562A2 publication Critical patent/EP2170562A2/fr
Application granted granted Critical
Publication of EP2170562B1 publication Critical patent/EP2170562B1/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
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • 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
    • B25D17/24—Damping the reaction force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0042—Ball-shaped locking members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0049—Roll-shaped locking members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/54—Plastics
    • B25D2222/57—Elastomers, e.g. rubber
    • 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
    • B25D2250/275—Tools having at least two similar components
    • B25D2250/285—Tools having three or more similar components, e.g. three motors
    • 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
    • B25D2250/371—Use of springs
    • 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
    • B25D2250/385—Use of thrust-washers, e.g. for limiting the course of the impulse member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17076—Spreading elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17094—Sleeve type retainer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17128—Self-grasping
    • Y10T279/17136—Yielding grasping jaws
    • Y10T279/17145—Ball or roller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17411—Spring biased jaws
    • Y10T279/17461—Nonresilient member biased by a resilient member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y10T279/17811—Reciprocating sleeve

Definitions

  • the invention relates to a tool holder, in particular for a chisel and / or rotary hammer, according to the preamble of the main claim.
  • a tool holder for holding and axial locking of drilling or chiselling tools in hitting power tools different tool holder are known.
  • Tool holders such as those in DE 4405697 A1 or in DE 10 2005 015 100 A1 are described, have a tool holder for receiving a inserted through an insertion cylindrical shaft of an insertion tool.
  • a locking device which comprises a locking element, a locking element and a return element.
  • the locking of the insert tool in the tool holder is done automatically when plugging.
  • the locking element is in this case axially counteracted with a restoring force - usually realized by a prestressed return spring - acted upon return element in the direction of the housing of the power tool until it can escape radially behind the blocking element in a defined by the return element Ausweichraum.
  • the locking element can then dip radially into one of the detent recesses provided in the shank of the insert tool and is pushed by the axially biased return element again in the axial direction below the blocking element.
  • the locking element By axially displacing the locking element of the rest position defined by the restoring force and a contact surface rest position, the locking element can dip radially out of the detent recess so that it can be removed from the tool holder by train on the insert tool.
  • the tool lock must ensure a secure holding of the insert tool in the tool holder in all operating conditions.
  • EP 1 958 734 A2 For this purpose, a tool holder according to the preamble of claim 1 is known. EP 1 958 734 A2 belongs to the state of the art under Article 54 (3) EPG.
  • a tool holder according to the main claim of the invention has a tool holder and a locking device with two locking elements, a locking element and a return element.
  • the two locking elements increase in a structurally simple and cost-effective manner the safety of use and life of the locking device.
  • the restoring element according to the invention exerts different forces on the locking elements when inserting the shank of the insert tool into the tool receptacle. It can thereby be achieved that despite the increased locking effect by the two locking elements when changing tools no increased force is applied by the operator.
  • the vibrations excited by the shock loads of the locking device propagate axially along the tool axis both in the shaft end direction and in the opposite direction.
  • One around the Tool holder in the direction of the insertion opening arranged frontal damping element has an advantageous effect on the vibration and thus wear behavior of the locking device.
  • An axially displaceable return element allows an extended radial movement of the locking elements. As a result, a particularly robust unlocking of the locking device is realized for the insertion of the insert tool.
  • a preferred embodiment of the restoring element has an elastic element and a holding element.
  • the elastic element generates a restoring force. While the retaining element forwards the restoring force to the locking element and the locking elements.
  • the elastic element can be executed in a particularly cost-effective manner as a spring.
  • a particularly advantageous embodiment of the elastic element results from the use of an elastic damping element. This alone or in combination with a spring, on the one hand, provide the restoring force necessary for locking and, on the other hand, act in a damping manner on the oscillations of the locking device induced by the impact-type operating loads.
  • An inventive restoring element with a contact shoulder and an extended shoulder area ensures a high level of operating comfort when changing the insert tool.
  • the contact shoulder is supported on the blocking element. Due to the restoring force of the restoring element, the blocking element is held in its axial position via the abutment shoulder.
  • the extended shoulder region according to the invention creates two unequal alternative spaces for the Locking elements. In this alternative spaces the locking elements dive radially during insertion of the insert tool, wherein the unequal shape of the alternate spaces has a different force effect on the individual locking elements result.
  • the force required during the insertion of the insert tool is limited in a simple and robust manner in the tool holder.
  • a cost-effective production and easy mountability of a restoring element can be achieved by an asymmetrically annular, in particular asymmetrically conical, shaping of the extended shoulder region.
  • the asymmetrical shape defines the unequal alternative spaces for the locking elements.
  • An alternative embodiment of the extended shoulder region with two tongues allows a particularly cost-effective production.
  • the tongues are inclined at different angles W1 and W2 to the tool axis defined by the insertion tool for this. As a result, two unequal alternative spaces for the locking elements are defined.
  • the extended shoulder area performs the entire restoring element when inserting the insert tool, a movement axially and / or tilting relative to the surrounding, the locking device receiving elements of the tool holder.
  • the locking device and the receiving elements are mechanically stressed and exposed to wear.
  • vibration damping acts a combination of a frontal damping element and a damping element as an elastic element of the locking device.
  • FIG. 1 illustrated tool holder (10) of a chisel and / or hammer drill according to the prior art is provided for receiving a cylindrical shank (12) of an insert tool (14).
  • the cylindrical shank (14) has in its peripheral surface two diametrically opposed latching recesses (16, 18).
  • the known tool holder (10) comprises an internally tubular tool holder (20), a protective cap (22) and an actuating element (24).
  • the actuating element (24) is preferably designed as an actuating sleeve (26).
  • the tool holder (20) serves to receive the cylindrical shaft (12) inserted through an end-side insertion opening (28) of the tool holder (10).
  • the tool holder (10) has a locking device (30) for the cylindrical shaft (12) of the insert tool (14).
  • the locking device (30) comprises two locking elements (32, 34), a locking element (36) and a return element (38).
  • the locking elements (32, 34) are designed as locking balls (32a, 34a), but other shapes such as e.g. in particular locking rollers or pins possible.
  • the return element (38) is executed, wherein one-, three- or multi-part designs of the reset element are conceivable. It comprises a holding element (40) and an elastic force generating the restoring force Element (42).
  • the elastic element (42) is realized as a spring element (42a).
  • the holding element (30) is characterized by an abutment shoulder (44) and an extended shoulder area (46).
  • the extended shoulder region (46) forms, together with a radial contact surface (48) on the blocking element (36), two unequal escape spaces (50, 52).
  • the two receiving legs (54, 56) of the extended shoulder region (46) are inclined at different angles of inclination W1 and W2 against the tool axis (58) defined by the insert tool (14).
  • the elastic element (42, 42a) is arranged in such a way that a restoring force (FR) separating the holding element (40) and the reference surface (59) is arranged between a reference surface (59) oriented toward the end-side insertion opening (28) and the holding element (40). generated.
  • a restoring force (FR) separating the holding element (40) and the reference surface (59) is arranged between a reference surface (59) oriented toward the end-side insertion opening (28) and the holding element (40).
  • the tool holder (20) has at some distance from the front-side insertion opening (28) has two diametrically opposite locking recesses (60, 62).
  • these locking recesses (60, 62) By means of these locking recesses (60, 62), one locking element (32, 34) can each be brought into engagement with a respective latching recess (16, 18) of the inserted cylindrical shank (12) of the inserting tool (14).
  • the locking recesses (60, 62) are designed so that the locking elements (32, 34) can not pass completely through the tool holder (20).
  • Fig. 1 are further from the front-side insertion opening (28) in the direction of the locking device (30) has two Entriegelungsaus strictlyened (64, 66). These are bounded radially to the tool axis (58) through the tool holder (20) and away from the tool axis (58) by two guide surfaces (68).
  • the guide surfaces (68) have a conical and a cylindrical portion in the form shown here. Of course, other shapes such as a hyperbolic shape of the guide surfaces (68) are possible.
  • the axial limitation is achieved by two frontal boundary surfaces (70) in the direction of the end-side insertion opening (28) and by the locking elements (32, 34).
  • the locking elements (32, 34) are radially bounded by a blocking element (36) by means of two axial abutment surfaces (72).
  • the blocking element (36) is arranged in the circumferential direction around the tool holder (20). With the help of the actuating element (24, 26), the blocking element (36) against the restoring force (FR) in relation to the tool holder (20) along the tool axis (58) axially displaceable away from the front-side insertion opening (28). Thereby, the two Entriegelungsaus strictly situated around the locking elements (32, 34) positioned so that they can dip radially out of the locking recesses (60, 62). By dipping the locking elements (32, 34), the insert tool (14) is unlocked.
  • the locking elements (32, 34) When inserting the cylindrical shaft (12) of the insert tool (14) through the frontal insertion opening (28) in the tool holder (20), the locking elements (32, 34) initially blocked by the axial abutment surfaces (72) in their radial movement. As a result, the locking elements (32, 34) are pressed axially against the receiving legs (54, 56) of the widened shoulder region (46). Due to the steeper angle of inclination W1 of the receiving leg (54), first the first locking element (32) comes into contact with it. By further insertion of the insert tool (14), the holding element (40) is now displaced axially and tilted by the one-sided contact with the tool axis (58).
  • the first escape space (50) for the radial replacement of the first locking element (32) is released.
  • the first locking element (32) no longer acts blocking the insertion of the insertion tool (14). Since the opposite receiving leg (56) is not yet in contact with the associated second locking element (34), the contact shoulder (44) is pressed against the radial contact surface (48) by the restoring force (FR) on this side, and the blocking element (36 ) held in position.
  • FIGS. 2 to 4 were the same elements / features of a tool holder (110) according to the invention with the same designations as in Example 1 occupied. Over the description of the embodiment 1 beyond elements / features obtained consecutive reference numbers. The reference numbers have been added with 100 for clarity each Fig.
  • Fig. 2 shows a preferred embodiment of a tool holder (110) according to the invention according to the type of the main claim.
  • the elastic element (142) is arranged here as a prestressed damping element (142b) between the reference surface (159) and the retaining element (140).
  • the damping element (142b) acts during the tool change as the restoring force (RF) generating elastic element (142) analogous to Embodiment 1.
  • the during operation especially when transitioning from working to idle state - occurring impulsive accelerations of the insert tool (114) in the locking device (130) induces along the tool axis (158), towards the in Fig. 2 not shown main part of the power tool to be propagated vibrations of the locking device (130). These vibrations are damped by the damping element (142b).
  • induced relative movements of individual components of the tool holder (110) in particular of the locking device (130) are greatly reduced.
  • elastic element (142) Possible extensions of in Fig. 2 realized elastic element (142) result, inter alia, combinations of one, two or more spring elements (142a) similar embodiment 1 and / or one, two or more damping element (142b).
  • the tool holder (110) according to the invention in FIG Fig. 2 is further characterized by a frontal damping element (174). This is arranged towards the front-side insertion opening (128), between the locking elements (132, 134) and the frontal boundary surfaces (170). During operation, the frontal damping element (174) acts similarly to the damping element (142b) described in the preceding paragraph to those portions of vibration that propagate along the tool axis (158) toward the insertion opening (128).
  • both damping elements (142b, 174) can be used independently in tool holders according to the type of the main claim.
  • the described embodiments represent only particularly clear forms of the claims claimed in the claims.
  • the damping elements are made of elastomers or elastic foams.
  • advantageous developments are conceivable by combinations with spring elements (142a).
  • FIG. 3 shows a first embodiment of a holding element (240) with a contact shoulder (244) and an extended shoulder region (246).
  • the extended shoulder region (246) is in this case designed as an asymmetrically conically shaped abutment formation (276).
  • this gananformung (276) forms the two receiving legs (254, 256), which identify the inclination angle W1 and W2 to the tool axis (258) by the asymmetric conical shape.
  • the receiving limbs (254, 256) and the abutment shoulder (244) act as geometric holding and guiding elements on the locking elements (232, 234) as described in exemplary embodiments 1 and 2. or the blocking element (236).
  • the holding element (240) characterized in this way is obvious to the person skilled in the art by further features such as e.g. an element for confusion-free, oriented assembly or a broken and / or structured surface expandable.
  • FIG. 4 shows an alternative, second embodiment of a holding element (340), wherein the extended shoulder portion (346) by two to the tool axis inclined guide tongues (378, 380) is formed.
  • the guide tongues (378a, 380a) are formed by two different angles of inclination W1 and W2 to the tool axis (358).
  • the guide tongues (378a, 380a) act in this way as receiving legs (354, 356) of the extended shoulder region (346) of the holding element (340).
  • the receiving legs (354, 356) thus realize an identical function of the holding element (340) as embodiment 1.
  • a second embodiment of a retaining element (340) in the manner of the second embodiment is characterized by different elastic properties of the two guide tongues (378b, 380b) inclined to the tool axis (358). Due to the different elastic properties, the guide tongues (378b, 380b) act on the locking elements (332, 334) in their function as receiving legs (354, 358) with different elastic forces. With such an expression, an abutment shoulder (344) which bears permanently on the blocking element (336) can be converted. Thereby, a relative movement and thus wear between the abutment shoulder (344) of the holding element (340), the blocking element (336) and other elements of the tool holder (310) is avoided.
  • Embodiments shown for a holding element represent exemplary possibilities for an embodiment.
  • a holding element according to the invention 40, 140, 240, 340
  • Advantageous embodiments are also conceivable by shapes of the outer and / or inner contours deviating from the radial symmetry about the tool axis (58, 158, 258, 358), such as, for example, shapes having mainly four-, six- or octagonal or other regular or irregular polygonal contour lines.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Gripping On Spindles (AREA)
  • Knives (AREA)

Claims (8)

  1. Porte-outil (110) pour un outil électrique, en particulier un marteau burineur et/ou un marteau perforateur, comprenant un logement d'outil (20) pour recevoir un arbre cylindrique (112) d'un outil à insérer (114) introduit à travers une ouverture d'enfichage (28), lequel outil à insérer présente, dans sa surface périphérique, au moins deux renfoncements d'encliquetage diamétralement opposés (16, 18), et comprenant un dispositif de verrouillage (30) présentant au moins deux éléments de verrouillage (132), au moins un élément de blocage (36) et au moins un élément de rappel (38), les éléments de verrouillage (132, 134) pouvant être amenés en prise avec un renfoncement d'encliquetage respectif (16, 18) de l'arbre cylindrique introduit (112) de l'outil à insérer (114) et l'élément de blocage (36) limitant un mouvement des éléments de verrouillage (132, 134), orienté radialement vers l'extérieur depuis l'axe d'outil (158) défini par l'outil à insérer (114), par une surface d'appui axiale (72) se trouvant sur la surface d'enveloppe de l'élément de blocage (36), caractérisé en ce que l'élément de rappel (38), lors de l'enfoncement de l'arbre cylindrique (112) de l'outil à insérer (114) dans le logement d'outil (20) exerce sur les différents éléments de verrouillage (32, 34) du dispositif de verrouillage (30) des forces à chaque fois différentes et le mouvement axial des éléments de verrouillage (32, 34) est amorti en outre par au moins un élément d'amortissement frontal (74) disposé autour du logement d'outil (20) dans la direction de l'ouverture d'enfichage (28).
  2. Porte-outil selon la revendication 1, caractérisé en ce que l'élément de rappel (38) est déplaçable axialement et lors de son déplacement axial, un mouvement radial élargi des éléments de verrouillage (32, 34) est permis.
  3. Porte-outil selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'élément de rappel (38) est constitué d'un élément élastique (142) produisant la force de rappel et d'un élément de retenue (40).
  4. Porte-outil selon la revendication 3, caractérisé en ce que l'élément élastique (142) est au moins un élément d'amortissement élastique (142b) et agit entre l'élément de retenue (40) et une surface de référence (59) du logement d'outil (20).
  5. Porte-outil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de rappel (38) présente un épaulement d'appui (44) pour l'appui d'un élément de blocage (36) et une région d'épaulement élargie (46) pour créer deux espaces d'écartement inégaux (50, 52) pour les éléments de verrouillage (32, 34).
  6. Porte-outil selon la revendication 4, caractérisé en ce que la région d'épaulement élargie (46) est formée sous forme annulaire asymétrique, notamment sous forme conique asymétrique.
  7. Porte-outil selon la revendication 4, caractérisé en ce que la région d'épaulement élargie (46) est formée par au moins deux langues de guidage (78, 80) qui s'étendent suivant des angles différents W1 et W2 par rapport à un axe d'outil (58) défini par l'outil à insérer (14) depuis l'épaulement d'appui (44) dans la direction de l'axe d'outil (58).
  8. Porte-outil selon la revendication 4, caractérisé en ce que la région d'épaulement élargie (46) est formée par au moins deux langues de guidage (78, 80) qui agissent avec des forces élastiques différentes sur l'élément de verrouillage (32, 34) qui leur est associé.
EP08736441A 2007-06-21 2008-04-22 Porte-outil pour un outil électrique, en particulier pour un marteau burineur et/ou un marteau perforateur Active EP2170562B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007028486A DE102007028486A1 (de) 2007-06-21 2007-06-21 Werkzeughalter für ein Elektrowerkzeug, insbesondere für einen Meißel- und/oder Bohrhammer
PCT/EP2008/054830 WO2008155152A2 (fr) 2007-06-21 2008-04-22 Porte-outil pour un outil électrique, en particulier pour un marteau burineur et/ou un marteau perforateur

Publications (2)

Publication Number Publication Date
EP2170562A2 EP2170562A2 (fr) 2010-04-07
EP2170562B1 true EP2170562B1 (fr) 2013-03-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08736441A Active EP2170562B1 (fr) 2007-06-21 2008-04-22 Porte-outil pour un outil électrique, en particulier pour un marteau burineur et/ou un marteau perforateur

Country Status (6)

Country Link
US (1) US8672331B2 (fr)
EP (1) EP2170562B1 (fr)
CN (1) CN101678545B (fr)
DE (1) DE102007028486A1 (fr)
RU (1) RU2495742C2 (fr)
WO (1) WO2008155152A2 (fr)

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US20100176561A1 (en) 2010-07-15
CN101678545A (zh) 2010-03-24
WO2008155152A2 (fr) 2008-12-24
EP2170562A2 (fr) 2010-04-07
CN101678545B (zh) 2012-03-14
US8672331B2 (en) 2014-03-18
RU2495742C2 (ru) 2013-10-20
WO2008155152A3 (fr) 2009-03-12
DE102007028486A1 (de) 2008-12-24
RU2010101643A (ru) 2011-07-27

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