EP2981395B1 - Adaptateur d'outil destiné à une machine-outil manuelle - Google Patents

Adaptateur d'outil destiné à une machine-outil manuelle Download PDF

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Publication number
EP2981395B1
EP2981395B1 EP14713817.6A EP14713817A EP2981395B1 EP 2981395 B1 EP2981395 B1 EP 2981395B1 EP 14713817 A EP14713817 A EP 14713817A EP 2981395 B1 EP2981395 B1 EP 2981395B1
Authority
EP
European Patent Office
Prior art keywords
tool
attachment
percussion
tool attachment
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.)
Active
Application number
EP14713817.6A
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German (de)
English (en)
Other versions
EP2981395A1 (fr
Inventor
Jens Blum
Heiko Roehm
Joerg Welke
Dietmar Saur
Tobias Herr
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2981395A1 publication Critical patent/EP2981395A1/fr
Application granted granted Critical
Publication of EP2981395B1 publication Critical patent/EP2981395B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • 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
    • B25D2250/051—Couplings, e.g. special connections between components

Definitions

  • the present invention relates to a tool attachment for a hand tool, which has a housing with a mounting interface, with an attachment housing, on which a locking unit for locking the tool attachment to the attachment interface of the power tool and a tool holder for receiving an insert tool are arranged.
  • a tool holder tool attachment known which has a locking unit for locking on a mounting interface of a trained like a screwdriver, drill or drill driver tool.
  • the locking unit serves to allow mounting or removal of the tool attachment to or from the power tool in an unlocked state and to lock in a locking state the tool attachment for operation on the power tool.
  • a disadvantage of the prior art is that such a tool attachment is limited or not at all suitable for drilling in hard rock or concrete.
  • An object of the invention is therefore to provide a new tool attachment, which can also be used for drilling in hard rock or concrete application.
  • a tool attachment for a hand tool which has a housing with a mounting interface, with an attachment housing on which a locking unit for locking the tool attachment to the mounting interface of the power tool and a tool holder for receiving an insert tool are arranged.
  • a striking mechanism is arranged, which is adapted to act on the insert tool in the striking operation of the tool attachment with executed in the axial direction of the tool holder punches.
  • either the tool holder or the insert tool can be acted upon with the blows.
  • the invention thus makes it possible to provide a tool attachment, which is also suitable for drilling in hard rock or concrete by the impact mechanism acting in the axial direction of an associated insertion tool.
  • the impact mechanism is designed in the manner of a pneumatic striking mechanism.
  • the percussion preferably has a racket which is driven in the operation of the tool attachment by an associated piston hitting against a firing pin.
  • the firing pin is connected to an output member associated with the tool holder.
  • the percussion mechanism is designed in the manner of a mechanical striking mechanism.
  • the invention thus makes it possible to provide a tool attachment with a striking mechanism, which has a comparatively uncomplicated and space-saving design.
  • the hammer mechanism has a drive member arranged coaxially with the tool holder.
  • the invention thus enables the provision of a compact striking mechanism with reduced spatial dimensions.
  • the tool holder has a rotatable about an associated axis of rotation output spindle, wherein the axis of rotation coincides with a drive axis of the impact mechanism.
  • the percussion mechanism is preferably designed for the direct impact drive of an output member associated with the tool holder in impact operation of the tool attachment, wherein the output member is designed to transmit corresponding impact impulses directly to the insertion tool.
  • the output member is formed by the output spindle of the tool holder.
  • the striking mechanism has a spring-loaded impactor with a spring element, which is coupled via a ball guide with an associated spring tensioning member.
  • the invention thus enables the provision of a striking mechanism with a reliable and uncomplicated structure.
  • the impact mechanism has an actuatable engagement clutch for activating the impact operation of the percussion mechanism.
  • the invention thus enables the provision of an impact mechanism in which a corresponding impact operation can be activated in a simple manner.
  • the engagement clutch is adapted to allow upon actuation a drive of the spring tensioning member for tensioning and releasing the spring element.
  • a transmission is arranged in the attachment housing.
  • the transmission is preferably designed in the manner of a transmission gear in such a way that a speed for driving the percussion gear is increased relative to a rotational speed of a driven member by the transmission gear.
  • the transmission gear is formed in particular in the manner of a single-stage planetary gear.
  • the transmission gear is in particular designed such that it can be activated in the impact mode of the striking mechanism.
  • the transmission gear is in particular coupled to the engagement clutch. The coupling of the transmission gear and the engagement clutch is preferably such that upon activation of the clutch and the transmission gear is activated.
  • the tool holder is designed to accommodate SDS-plus and / or SDS-Quick insert tools.
  • the invention thus makes it possible to provide a tool attachment that can be used with a variety of types of insert tools and thus can be used in a variety of different applications and in a variety of different working conditions.
  • the tool holder is designed for receiving round shaft insert tools and / or HEX insert tools.
  • the tool attachment is designed for the positive drive by the power tool.
  • the tool attachment on a drive member, which may be formed for example as a drive shaft.
  • the drive member has a free end on which a polygonal drive contour is formed.
  • the polygonal drive contour can be designed, for example, as a hexagonal driving contour.
  • the polygonal driving contour is intended to be received in a tool holder of a power tool and to be driven in rotation by the tool holder.
  • the tool holder of the power tool has for this purpose a corresponding to the polygonal driving contour polygonal inner receptacle.
  • a tool system with a hand tool having a housing with a mounting interface, and with a tool attachment having a header housing to which a locking unit for locking the tool attachment to the mounting interface of the power tool and a tool holder for receiving an insertion tool are arranged.
  • a striking mechanism is arranged, which is adapted to act on the insert tool in the striking operation of the tool attachment with executed in the axial direction of the tool holder punches.
  • the invention thus enables the provision of a tool system with a hand tool and a tool attachment, by the in axial Direction of an associated application tool effective Schlagtechnik is also suitable for drilling in hard rock or concrete.
  • the hand tool is preferably designed in the manner of a cordless drill or cordless screwdriver.
  • hand tooling machines for drilling in hard rock or concrete can be equipped with the tool attachment according to the present invention, which would not be suitable without the tool attachment, so that their applications and usability can be easily increased or improved.
  • the tool attachment is designed for the positive drive by the power tool.
  • the power tool on a drive spindle and the tool holder of the tool attachment an output spindle, wherein the drive spindle and the output spindle after attachment of the tool attachment to the power tool have a common axis of rotation.
  • Fig. 1 shows an exemplary hand tool 100, which has a tool housing 105 with a handle 115, and an enlarged section 160 of the power tool 100.
  • the power tool 100 for mains-independent power supply mechanically and electrically connectable to a battery pack 190.
  • the hand tool 100 is exemplified as a cordless drill driver. It should be noted, however, that the present invention is not limited to cordless drill, but rather can be applied to different hand tool machines, in which a tool is rotated, regardless of whether the hand tool network dependent or independent of the mains with the battery pack 190 operable is, for. B. in a screwdriver or cordless screwdriver, etc.
  • the drive motor 180 is z. B. via a manual switch 195 on and off and can be any type of engine, z. As an electronically commutated motor or a DC motor.
  • the gear 109 may, for. Example, be designed in the manner of a reduction gear that can be realized, for example, with a planetary gear formed with different planetary stages, which is optionally associated with a torque clutch 199.
  • the transmission 109 is illustratively arranged in a transmission housing 110 and the drive motor 180 in a motor housing 185, wherein the transmission housing 110 and the motor housing 185 are arranged in the tool housing 105 by way of example.
  • the drive motor 180 is connected via the gear 109 with a drive shaft 120, z. B. a drive spindle connected. During operation of the power tool 100, the motor 180 rotatably drives the drive shaft 120 via the gear 109.
  • the power tool 100 is associated with a tool holder 140 for receiving an insert tool 150, which has a bit holder 145 by way of example.
  • This tool holder 140 may be integrally formed with the drive shaft 120 which can be driven by the drive motor 180 via the gear mechanism 109 or be connected to it in a tower-shaped manner.
  • the bit holder 145 has an actuating sleeve 149 and a polygonal inner receptacle 147, in particular a hexagonal inner receptacle, for receiving a so-called HEX drill or a screwdriver bit.
  • Suitable HEX drills and bits are tools that have a shank with at least a section hexagonal section, which is provided with an annular groove in HEX drills.
  • the bit holder 145 may also be formed, or alternatively, for receiving a so-called SDS-Quick mini-drilling tool.
  • Suitable SDS-Quick Mini drilling tools are drilling tools that have a substantially cylindrical shaft have two parallel to the longitudinal axis of the shaft protruding rotary drive webs, each having a locking recess. It should be noted, however, that the hexagonal inner receptacle 147 may be formed beyond or, alternatively, also for receiving other types of insert tools. For example, the hexagonal inner receptacle 147 may also be designed to accommodate SDS-Plus insert tools. Exemplary application tools and the structure and operation of a suitable bit holder are well known to the skilled person, z. B.
  • the hand tool 100 or the tool holder 140 is associated with a mounting interface 170, which is illustratively arranged axially and radially immovably in the region of an end face 112 of the tool housing 105.
  • This is exemplified sleeve-shaped and is therefore hereinafter also referred to as "mounting sleeve”.
  • the mounting sleeve 170 is merely exemplified as a separate component and may alternatively be integrally formed with the tool housing 105 and / or the gear housing 110.
  • the fastening sleeve 170 serves as a locking and centering arrangement for an associated tool attachment (300 in Fig. 3 ) and sheathed at least in sections the bit holder 145 with a predetermined radial spacing, to allow axial displacement of the actuating sleeve 149 of the bit holder 145 inside the mounting sleeve 170.
  • On the inner circumference 179 of the mounting sleeve 170 are illustratively spaced, web-like elevations are provided which extend in the longitudinal direction of the mounting sleeve 170 and are directed radially inwardly, and of which only two elevations are marked by the reference numeral 171 for clarity and clarity of the drawing.
  • recesses 178 may z. B. as spaces between the web-like elevations or on the type of depressions on the inner circumference 179 of the mounting sleeve 170 may be formed.
  • the fastening sleeve 170 has an outer circumference 173, which tapers at an annular shoulder 172 into a reduced region 176 facing away from the tool housing 105.
  • this reduced area 176 at least one and preferably a plurality of plate-shaped control elements are provided on the outer circumference 173.
  • These are illustratively designed in the manner of right-angled trapezoids and each have an associated, bevelled leading edge.
  • only two controls are identified by the reference numeral 174 and only two leading edges by the reference numeral 175.
  • Fig. 2 11 shows an exemplary tool system 200 that includes the hand tool 100 of FIG. 1 provided with the tool housing 105, the bit holder 145, and the mounting sleeve 170 Fig. 1 and a tool attachment 300 attachable thereto and attached by way of example thereto.
  • the fastening sleeve 170 of the handheld power tool 100 illustratively has on its outer periphery 173 the exemplary plate-shaped control element 174 and another exemplary plate-shaped control element 276, which has a guide edge 277 by way of example.
  • a complete description of the mounting interface 170 is shown in FIG DE 10 2011 084 499 A1 to find.
  • the tool attachment 300 has an output unit 370 arranged in a header housing 305 and a locking unit 350 arranged on the attachment housing 305 for locking the tool attachment 300 to the fastening sleeve 170 of the handheld power tool 100, preferably for rotationally fixed locking.
  • the output unit 370 is for simplicity and clarity of the drawing in Fig. 2 only partially shown and therefore not described here. However, the output unit 370 becomes more in-depth Fig. 3 described in which it is fully shown.
  • the attachment housing 305 may be formed in one piece or several pieces.
  • the attachment housing 305 can also be made of several individual housings be composed or have a plurality of interconnected individual housing.
  • the locking unit 350 illustratively has a main body 302 connected to the attachment housing 305, in which a drive member 380 of the tool attachment 300 is rotatably mounted.
  • the drive member 380 is in the embodiment according to Fig. 3 designed as a drive shaft.
  • This main body 302 illustratively has on its outer circumference 355 an annular groove 211, in which a radially inwardly directed annular collar 249 of the attachment housing 305 is fixed in such a way that the attachment housing 305 is at least axially immovably fixed to the main body 302.
  • the main body 302 forms a receiving region 315 in the form of an inner cavity for receiving the bit holder 145 provided with at least one locking element 148 and an actuating sleeve 149.
  • a rotation-preventing unit 332 is formed and, on the other hand, a locking sleeve 205 is arranged rotatably and preferably axially non-displaceably.
  • the rotation-preventing unit 332 is designed for fastening the base body 302, which is preferably secured against rotation, to the fastening sleeve 170 of the hand-held power tool 100.
  • the locking sleeve 205 is used to enable or block at least one associated locking element 202, which is illustratively formed in the manner of a circumferentially of the locking sleeve 205 aligned blocking ridge on the inner circumference 207 of the locking sleeve 205.
  • the rotation-preventing unit 332 is formed in an axial end region of the outer circumference 355 of the main body 302 facing the tool housing 105 of the handheld power tool 100 such that the anti-rotational unit 332 and the fastening sleeve 170 of the handheld power tool 100 have complementary geometric shapes that form a positive connection are suitable and are accordingly adapted to engage for releasable, preferably secured against rotation attachment of the base body 302 to the mounting sleeve 170 into one another.
  • the rotation-preventing unit 332 illustratively has at least one web-like projection which extends on the outer circumference 355 in the longitudinal direction of the main body 302, wherein Fig. 2 two elevations 334, 336 are visible by way of example.
  • ridge-like elevations 334, 346 are z.
  • the web-like elevations 334, 336 and these groove-like recesses extend to a formed on the outer circumference 355, annular projection 220, against whose side facing away from the tool housing 105 side an annular shoulder 210 abuts, which is formed on the inner circumference 207 of the locking sleeve 205.
  • the annular shoulder 210 is disposed at least substantially axially immovably on the outer circumference 355 of the main body 302 between the annular projection 220 and a locking ring 216 arranged illustratively in an annular groove 212 of the main body 302.
  • the annular shoulder 210 has a beveled edge 299 by way of example.
  • a spring element 298, for example is shown between the annular shoulder 210 and an end face 241 of the attachment housing 305 facing the handheld power tool 100.
  • This is preferably designed to act on the locking sleeve 205 to form the releasable, preferably secured against rotation attachment of the body 302 to the mounting sleeve 170 with a predetermined spring force in the direction of arrow 297 in a locking position, wherein the locking position corresponds to a first rotational position position of the locking sleeve 205.
  • the drive shaft 380 For attachment of the tool attachment 300 to the mounting sleeve 170 of the power tool 100 whose base 302 is pushed in the direction of arrow 297 on the mounting sleeve 170, so that the drive shaft 380 of the tool 300 is positively inserted into the bit holder 145 thus can be rotationally driven by this form-fitting.
  • the drive shaft 380 has a free end 382 which is provided with a polygonal driving contour 384.
  • the polygonal driving contour 384 and the polygonal inner receptacle 147 are formed correspondingly.
  • the base body 302 and thus the tool attachment 300 are in this case releasably locked to the mounting sleeve 170 of the power tool 100 without the need for a manual rotation of the locking sleeve 205 by a user is required.
  • the assembly of the tool attachment 300 on the hand tool 100 can be done in a comfortable manner one-handed by the user.
  • the main body 302 for torque support by means of the anti-rotation unit 332 preferably fixed against rotation secured to the mounting sleeve 170 and centered. It should be understood, however, that attachment of the tool attachment 300 to the mounting sleeve 170 is not part of the present invention, so a detailed description thereof may be omitted for purposes of brevity of description.
  • Fig. 3 shows the tool attachment 300 of Fig. 2
  • the output unit 370 arranged in the attachment housing 305 and the locking unit 350 are preferably located on an axial end of the attachment housing 305 facing away from the locking unit 350.
  • a tool receptacle 340 provided with an output member 344 is preferably provided for receiving an insertion tool (eg the insertion tool 150 of FIG Fig. 1 ) arranged.
  • the output member 344 is illustratively designed in the manner of a latching sleeve or a tool holder and provided with an inner receptacle 348. This is designed according to an embodiment for receiving SDS-plus and / or SDS-Quick insert tools.
  • the inner receptacle 348 may also be designed to receive round shaft insert tools and / or HEX insert tools.
  • the output unit 370 is driven in accordance with an embodiment of the drive shaft 380, which via an associated bearing element 307, z. B. a rolling bearing, rotatably mounted in the main body 302 of the locking unit 350, as in Fig. 2 described axially immovably connected to the attachment housing 305.
  • the drive shaft 380 for rotating drive of the output member 344 and for driving a percussion mechanism 320 arranged in the attachment housing 305, which is designed to accommodate an insertion tool (for example the insertion tool 150 of FIG Fig. 1 ) in the operation of the tool attachment 300 to act in the axial direction of the tool holder 340 executed strokes.
  • a gear 310 is preferably interposed between the drive shaft 380 and the hammer mechanism 320, which is preferably designed in the manner of a transmission gear.
  • the transmission 310 may be formed in the manner of a reduction gear.
  • the percussion mechanism 320 is designed in the manner of a pneumatic impact mechanism and has a racket 322, which is driven in the operation of the tool attachment 300 by a piston 321 hitting against a firing pin 324 which is connected to the output member 344.
  • the piston 321 is driven at least indirectly by the transmission 310. Air acts as a spring between the piston 321 and the beater 322 in the case of the percussion mechanism 320 designed in the manner of a pneumatic impact mechanism.
  • percussion mechanism 320 has an overload clutch 330 by way of example.
  • pneumatic impact mechanism may be designed in the manner of a pneumatic percussion mechanism commonly used in rotary hammers. Therefore, for the sake of brevity, the description is omitted here on a detailed description of the pneumatic impact mechanism.
  • Fig. 4 1 shows a tool attachment 400 according to a second embodiment, which has an output unit 470 arranged in an attachment housing 405 and a locking unit 450.
  • the locking unit 450 is exemplified with the locking unit 350 of the tool attachment 300 of FIG Fig. 2 and 3 realized so that the tool attachment 400 instead of the tool attachment 300 of Fig. 2 and 3 with the hand tool 100 of Fig. 1 operated and this can be attached to the mounting sleeve 170.
  • an output member 444 tool holder 440 for receiving an insert tool, for. B. the insert tool 150 of Fig. 1 arranged.
  • the output member 444 is illustratively designed in the manner of a latching sleeve or a tool holder and provided with an inner receptacle 448. This is designed according to an embodiment for receiving SDS-plus and / or SDS-Quick insert tools.
  • the inner receptacle 448 may also be designed to accommodate round shaft insert tools and / or HEX insert tools.
  • the output unit 470 is driven by the formed as a drive shaft drive member 380, which via an associated bearing element 407, z. B. a rolling bearing, rotatably mounted in the main body 302 of the locking unit 350, which is here axially immovably connected to the attachment housing 405.
  • the drive shaft 380 is arranged for the rotary drive of the output member 444 and for driving a percussion mechanism 420 arranged in the attachment housing 405, which is adapted to the arranged in the tool holder 440 insert tool 150 during operation of the tool attachment 400 in the axial direction of the tool holder 440 executed To impose blows.
  • a gear 410 interposed which is preferably designed in the manner of a transmission gear.
  • the transmission 410 may be formed in the manner of a reduction gear.
  • the striking mechanism 420 is formed in the manner of a mechanical percussion and has a racket 422 which is driven in operation of the tool attachment 400 by a drive spring 421 beating against a firing pin 424 which is connected to the output member 444.
  • the drive spring 421 is driven at least indirectly by the transmission 410.
  • percussion gear 420 has an overload clutch 430 by way of example.
  • the mechanical impact mechanism 420 also sufficiently known to the skilled person are.
  • the mechanical striking mechanism 420 may be designed in the manner of a mechanical percussion mechanism commonly used in rotary hammers. Therefore, for the sake of brevity of the description, a detailed description of the mechanical impact mechanism 420 is omitted here.
  • Fig. 5 shows the cutout 160 of the power tool 100 of Fig. 1 with the tool holder 140, which has the bit holder 145 by way of example, as well as with a fastening interface 550, also referred to below as a "machine interface", according to an alternative embodiment.
  • the bit holder 145 has a polygonal inner receptacle 147, in particular a hexagonal inner receptacle 147 on.
  • the bit holder 145 has a locking element 148, which can be actuated by means of an actuating sleeve 149.
  • the machine interface 550 is illustratively in the area of the bit holder 145 on the tool housing 105 and / or the gear housing 110 of the portable power tool 100 of FIG Fig. 1 fixed immovably axially and radially. It should be noted, however, that the machine interface 550 is merely exemplified as a separate component and, alternatively, may be formed integrally with the tool housing 105 and / or the gear housing 110.
  • the machine interface 550 serves for preferably non-rotationally secured attachment of an associated tool attachment (600 in FIG Fig. 6 ), the z. B. in the manner of a so-called inline, Bohrfutter-, angle or Exzentervorsatzes may be formed and preferably a striking mechanism (640 in Fig. 6 ) having.
  • the machine interface 550 has a fastening element 551 fastened to the end face 112 of the tool housing 105 secured against rotation therefrom and / or the gear housing 110.
  • the fastening element 551 preferably surrounds the bit holder 145, at least in sections, with a predetermined radial spacing in order to allow an axial displacement of the locking sleeve 149 of the bit holder 145 in the interior of the fastening element 551.
  • the fastening element 551 has on its outer circumference at least one blocking element 555 and at least two retaining members 552, 554.
  • the blocking element 555 preferably has at least one locking toothing 556, and the at least two retaining elements 552, 554 are designed, for example, in the manner of bayonets for forming a bayonet connection. It should be understood, however, that the description of such a bayonet connection is merely exemplary in nature and is not intended to limit the invention. Rather, alternative mounting options for the machine interface 550 can be used in which a corresponding tool attachment (600 in Fig. 6 ) can be fastened via a rotational movement on the machine interface 550, z. B. a so-called wire-bar lock, etc.
  • At least sectionally cone-shaped centering aid 553 for the axial centering of a locking unit (602 in FIG Fig. 6 ) of an associated tool attachment (600 in Fig. 6 ), wherein the fastening element 551 is adapted to the axial centering of the associated tool attachment (600 in Fig. 6 ) on the tool housing 105 and / or the transmission housing 110.
  • an exemplary annular, at least partially funnel-shaped centering surface 559 for forming the centering aid 553 is provided on the inner circumference of the fastening element 551.
  • centering surface 559 is funnel-shaped only as an example and not as a limitation of the invention. Rather, a conical configuration on an additional centering ring can be realized. Accordingly, a reference to the term "cone-shaped" in the context of the present invention represents both a reference to a conical and a funnel-shaped configuration of a corresponding component.
  • the centering 553 may instead of a single ring and funnel-shaped centering surface 559 have a plurality of cone-shaped arc sections, etc.
  • the fastening element 551 has at least one and by way of example three optional angle adjustment members 557. These serve, for example, in a fastening of a trained in the manner of an angle or Exzentervorsatzes Tool attachment on the machine interface 550 for specifying a predetermined angular position.
  • Fig. 6 shows a tool attachment 600 according to a third embodiment, which is for attachment to the machine interface 550 of Fig. 5 is trained.
  • the tool attachment 600 has, by way of example, a fastening interface 602, which is also referred to below as a "drive section” for the purpose of clarity of the description, and a tool receptacle 606, also referred to below as a "receiving section".
  • This illustratively has an SDS-plus or SDS-Quick receptacle 655, but may also have any other receptacle, eg. B. a circular chuck and so on.
  • the drive unit 604 has, for example, an impact mechanism 640 configured in the manner of a mechanical impact mechanism. Therefore, the tool attachment 600 is also referred to as the "percussion attachment 600" for ease of description.
  • the drive section 604 has, for example, a header housing 610 which preferably has an outer, e.g. B. rubberized grip portion 611 has.
  • a percussion 640 associated, rotatably driven drive member 697 is rotatably mounted in a first bearing element 677.
  • the drive member 697 is preferably arranged coaxially to the receiving portion 606 and serves to drive a driven member 698, z. B. via an at least positive connection, wherein the output member 698 is also rotatably mounted in the attachment housing 610, for example in a bearing element 623, and z. B. for receiving the screwdriver bit 150 of Fig. 1 can be trained.
  • a securing member 624 preferably a securing ring, is arranged in the region of the bearing element 623 on the axial side facing the striking mechanism 640, in order to prevent slippage of the output member 698 from the attachment housing 610.
  • a support ring 625 At the axial side of the bearing element 623 facing away from the impact mechanism 640, there is a support ring 625 for supporting a spring element 626 which abuts against a plate-shaped engagement member 627 secured in the receiving section 606 via a securing ring 628.
  • the spring element 626 designed in the manner of a compression spring biases the receiving section 606 and thus the output member 698 in an axial direction pointing away from the attachment housing 610, as indicated by an arrow 601.
  • the output member 698 is preferably a driven spindle which is associated with the receiving portion 606 and rotatable about an axis of rotation 619, wherein the rotational axis 619 coincides with a corresponding drive axis of the percussion mechanism 640 or a corresponding axis of rotation of the drive member 697.
  • the percussion 640 is formed in the manner of a so-called "inline percussion" for direct impact drive of the output member or the output spindle 698 in impact operation of Schlagtechnikvorsatzes 600, wherein the output member or the output spindle 698 is adapted to corresponding impact pulses directly to the therein arranged insert tool 150 of Fig. 1 transferred to.
  • the driven member or the output spindle 698 comprises a striking surface 696, which is impacted by a striking member 641 of the percussion mechanism 640 in impact mode.
  • a damping member 622 is provided in the attachment housing 610, which has a securing element 621, preferably a locking ring in the region Bearing element 623 is fixed.
  • the percussion mechanism 640 has a striker 641 spring-loaded with a spring element 642 designed in the manner of a compression spring, which is coupled via a ball guide 680 to an associated spring-loading element 646.
  • the impactor 641 is preferred for performing axially aligned impacts, i. H. Shocks in the direction of arrow 601, provided against the output spindle 698.
  • the spring biasing member 646 is exemplified sleeve-shaped and with its front, the impactor 641 facing axial end 643 received in this, wherein in the region between the spring tension member 646 and the impactor body 641, a spherical clamping element 645 is arranged.
  • a radial recess 644 of the impactor body 641 is arranged on the one hand in a radial recess 644 of the impactor body 641 and on the other hand can roll in a control cam 647 formed on the inner circumference of the spring tensioning member 646.
  • the radial recess 644 of the impactor body 641 is formed on the inner circumference and may, for. B. via a diametrically opposite through-hole 649 are created by performing a corresponding drilling tool.
  • position of the spherical clamping element 645 corresponds illustratively a clamping position in which the spring element 642 stretched maximum is such that by releasing the clamping element 645 an axial impact is made possible by the impactor 641 against the output spindle 698. After carrying out such a stroke, the tensioning element 645 is in a rest position 689 indicated by dashed lines.
  • the spring tensioning member 646 receives the drive member 697, wherein the spring tensioning member 646 is rotatably mounted and rotatably mounted thereon independently of the drive member 697.
  • To drive the spring tensioning member 646 is preferably used in striking mode of the percussion 640 activatable transmission 700, which is illustratively formed in the manner of a single-stage planetary gear with a drivable by the drive member 697 planet carrier 615 and several planetary gears 682. These are drivingly coupled to the spring tensioning member 646 via a rotational engagement toothing 648 and arranged in an associated ring gear 650.
  • This is fixed to the housing and secured against rotation in the attachment housing 610 and has a shock body 641 facing axial end in which a bearing element 679, z. B. a rolling bearing, for rotatably supporting the spring tensioning member 646 is preferably arranged radially and axially immovable, and facing away from the impactor body 641 and the intent interface 602 facing axial end on which the planet gears 682 attack.
  • a preferably by an axial displacement of the output spindle 698 against the spring force of acting as idle spring spring element 626 and opposite to the direction of the arrow 601 operable engagement clutch 620 is provided.
  • This is preferably designed to be actuated by the in Fig. 6 output spindle 698 shown in an associated idling position to allow a drive of the spring tensioning member 646 through the transmission gear 700 for tensioning and releasing the spring element 642 via the impactor body 641.
  • this preferably has a cone-shaped axial end 699, which is arranged in the drive member 697 and is provided for engagement with the engagement clutch 620 in impact operation of the striking mechanism 640.
  • the operation of the engagement clutch 620 is below at Fig. 7 described.
  • the operation of the impact mechanism 640 and more details on components thereof are in the DE 10 2013 208 882.5 described.
  • the drive member 697 has a remote from the drive portion 604, free end 669, on which advantageously a polygonal driving contour 665, in particular a hexagonal driving contour, is formed.
  • the polygonal driving contour 665 is formed corresponding to the polygonal inner receptacle 147 of the tool holder 140.
  • the polygonal driving contour 665 is intended to be rotationally driven by the polygonal inner receptacle 147 of the power tool 100.
  • an at least partially sleeve-shaped or tubular-shaped Winkeleinstellelement 672 is arranged, through which the drive member 697 engages at least in sections.
  • the angle adjusting element has a main body 673.
  • the main body 673 is preferably rigid, d. H. axially and radially immovable, connected to the attachment housing 610 and / or formed integrally therewith.
  • the main body 673 has at its the drive portion 604 facing the axial end of an outer annular collar 609, which is arranged axially and radially immovable in the attachment housing 610, z. B. by pressing or jamming, and axially abuts against the ring gear 650.
  • This annular collar 609 is preferably formed on its inner circumference as a receptacle for the planet carrier 615.
  • an end-side Winkeleinstellvertechnikung 674 is provided at its other axial end 671.
  • the base body 673 has a sleeve-shaped portion 608, which forms a receiving portion 675 in the form of an inner cavity for receiving the provided with at least one locking element 148 and an actuating sleeve 149 bit holder 145 of the tool holder 140.
  • the drive member 697 forms an actuating member 688 which surrounds the drive member 697 sleeve-shaped at least in sections and which acts to urge the locking sleeve 149 of Fig. 5 is trained.
  • the drive member 697 and the actuator 688 may also be formed two or more pieces.
  • the actuator 688 is exemplarily disposed inside the Winkeleinstellelements 672 and preferably radially spaced therefrom.
  • the intent interface 602 is used to attach the percussion attachment 600 to an associated hand tool, z. B. the power tool 100 of Fig. 1 , or their machine interface 550 of Fig. 5 and illustratively has an angular position setting unit 670 associated with the angle adjusting element 672 and a locking unit 660.
  • the locking unit 660 is configured to lock the percussion attachment 600 in a locked position for operation on the handheld power tool at a predetermined angular position thereon and in a locked position Unlocking state to allow removal of Schlagtechnikvorsatzes 600 of the power tool.
  • the Winkelpositionseinstelltechnik 670 is adapted to allow adjustment of the predetermined angular position of the percussion attachment 600 for operation on the power tool.
  • the angular position setting unit 670 is operable in the locking state of the locking unit 660 to allow a change in the predetermined angular position.
  • Such an operation for changing the predetermined angular position is preferably carried out by a combined longitudinal and rotational movement of the attachment housing 610th
  • the locking unit 660 has a locking body 632 and a rotatably mounted in this spring-loaded centering 681.
  • This centering 681 is about suitable fasteners 683, z.
  • the centering element 631 has at least one centering element 631, which, for. B. at least two arcuate, in the longitudinal direction of Schlagtechnikvorsatzes 600, ie against the direction 601, tapered centering 676, 678 has.
  • centering member 631 merely by way of example has the at least two arcuate tapered centering portions 676, 678 and not for the purpose of limiting the invention. Rather, the centering member 631 can also have a single centering region designed in the manner of a truncated cone.
  • the locking body 632 preferably has at least two locking elements 666, 668, which are exemplified in the manner of bayonets to form a bayonet connection. Furthermore, an actuating ring 664 is arranged on the outer circumference of this locking body 632 by way of example, which can be actuated to lock the locking body 632 to the handheld power tool, wherein the locking body 632 and the actuating ring 664 can be formed in one piece.
  • an optional, at least partially resilient blocking and blocking member 607 is arranged in the region between the locking body 632 and the actuating ring 664 in the region between the locking body 632 and the actuating ring 664.
  • This is at least partially fixed in position on the locking body 632 and / or the actuating ring 664 and designed to prevent locking of the locking body 632 from its locking position to its unlocked position in the locking state of the locking unit 660, wherein the blocking and blocking member 607 preferably with the machine interface 550 from Fig. 5 associated blocking element 555 of Fig. 5 interacts.
  • the actuating ring 664 is preferably designed to at least partially block the blocking and blocking member 607 in the locking state of the locking unit 660 against the machine interface 550 of FIG Fig. 5 to act on.
  • the blocking and blocking member 607 is in this case designed to block the actuating ring 664 in the locking state of the locking unit 660 in a blocking position on the locking body 632, in which the actuating ring 664, the blocking and blocking member 607 at least partially against the machine interface 550 of Fig. 5 urged to prevent an automatic rotation of the actuating ring 664 relative to the locking body 632.
  • Fig. 7 shows a section of the Schlagtechnikvorsatzes 600 of Fig. 6 to illustrate the transmission gear 700 and the engagement clutch 620.
  • This has at least one and preferably a plurality, illustratively four, coupling members 712, 714 (and 812, 814 in FIG Fig. 8 ), which are arranged in associated openings of the drive member 697 and in this case by an optional clamping element, for. B. an O-ring or suitable compression springs, can be applied radially inwardly.
  • the coupling members 712, 714 are shown here by way of example in their radially outer coupling positions in which they connect the drive member 697 rotationally fixed to the planet carrier 615, so that the transmission gear 700 is activated and thus the spring tensioning member 646 is driven faster by its translation, as the output spindle 698th
  • FIG. 7 shows Fig. 7 the spherical coupling members 712, 714 in their radially inner, dashed or transparent indicated idle positions, in which the coupling members 712, 714 are further positioned radially inwardly compared to their coupling positions. From these idle positions, the spherical coupling members 712, 714 can be moved into their coupling positions by being acted upon by the cone-shaped axial end 699 of the output spindle 698 and held there by the output spindle 698. This is achieved by the at Fig. 6 described, axial displacement of the output spindle 698 against that of the idle spring 626 of Fig. 6 applied spring force, with a release of the output spindle 698 of these of the idling spring 626 of Fig. 6 moved back to its idle position back or pressed.
  • Fig. 8 shows the engagement clutch 620 of the percussion attachment 600 of Fig. 6 and 7 to illustrate the spherical coupling members 712, 714 and two other spherical coupling members 812, 814. These are shown on the one hand in their idle positions and beyond indicated in dashed lines in their coupling positions in which they partially into the drive member 697 and partially in associated, dome-shaped recesses 828, 824, 822 and 826 of the planet carrier 615 engage.
  • the attachment interface 170 after Fig. 1 and the attachment interface 550 Fig. 5 are each selected by way of example.
  • attachment interface 170 may alternatively be used to secure percussion attachment 600
  • attachment interface 550 may alternatively be used to attach percussion attachment 300 or 400.
  • the fastening interfaces 170, 550 are designed to provide axial securing and an anti-twist protection of the tool attachment 300, 400, 600 on a stationary housing component, in particular the tool housing 105 and / or the gear housing 110, of the handheld power tool 100.
  • attachment interface and the securing elements for axial securing and securing elements for preventing rotation are possible.
  • An alternative mounting interface with the corresponding Fuse elements is described for example in DE 10 2011 084 495 A1 .
  • Other alternative security elements are also possible.
  • securing elements for preventing rotation are formed on a stationary housing component such as the tool housing and / or the gear housing.
  • the anti-rotation elements may be, for example, locking projections, for which corresponding locking recesses are provided on the tool attachment.
  • Securing elements for axial securing are provided on the output spindle or the bit holder of the power tool.
  • Axialommeselement can be present on the circumferential surface of the bit holder circumferential groove.
  • at least one locking body cooperating with the groove for example a locking ball, is arranged on the tool attachment. For locking purposes, the locking body engages in the groove on the bit holder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (21)

  1. Adaptateur d'outil (300, 400, 600) destiné à une machine-outil manuelle (100), qui présente un corps (105) avec une interface de fixation (170), avec un boîtier d'adaptateur (305, 405, 610), sur lequel sont disposées une unité de verrouillage (350, 602) pour le verrouillage de l'adaptateur d'outil (300) à l'interface de fixation (170) de la machine-outil manuelle (100, 300, 600) et un logement d'outil (340, 440, 606) destiné à recevoir un outil insérable (150), caractérisé en ce qu'un mécanisme de percussion (320, 420, 640) est disposé dans le boîtier d'adaptateur (305, 405, 610) et est configuré pour appliquer à l'outil insérable (150), dans le fonctionnement avec percussion de l'adaptateur d'outil (300, 400, 600), des coups portés dans la direction axiale du logement d'outil (340, 440, 606).
  2. Adaptateur d'outil selon la revendication 1, caractérisé en ce que le mécanisme de percussion (320) est réalisé à la manière d'un marteau pneumatique.
  3. Adaptateur d'outil selon la revendication 1 ou 2, caractérisé en ce que le mécanisme de percussion (320) présente un percuteur (322), qui pendant le fonctionnement de l'adaptateur d'outil (300) est entraîné par un piston associé (321) pour frapper une tige de percussion (324).
  4. Adaptateur d'outil selon la revendication 3, caractérisé en ce que la tige de percussion (324) est reliée à un organe de sortie (344) associé au logement d'outil (340).
  5. Adaptateur d'outil selon la revendication 1, caractérisé en ce que le mécanisme de percussion (640) est réalisé à la manière d'un mécanisme de percussion mécanique.
  6. Adaptateur d'outil selon la revendication 5, caractérisé en ce que le mécanisme de percussion (640) présente un organe d'entraînement (697) disposé coaxialement au logement d'outil (606).
  7. Adaptateur d'outil selon la revendication 5 ou 6, caractérisé en ce que le logement d'outil (606) présente une broche de sortie (698) pouvant tourner autour d'un axe de rotation associé (619), dans lequel l'axe de rotation (619) coïncide avec un axe d'entraînement (619) du mécanisme de percussion (640).
  8. Adaptateur d'outil selon l'une quelconque des revendications 5 à 7, caractérisé en ce que le mécanisme de percussion (640) est configuré pour l'entraînement de percussion direct d'un organe de sortie (698) associé au logement d'outil (606) pendant le fonctionnement de percussion de l'adaptateur d'outil (600), dans lequel l'organe de sortie (698) est configuré pour transmettre des impulsions de choc correspondantes directement à l'outil insérable (150).
  9. Adaptateur d'outil selon l'une quelconque des revendications 5 à 8, caractérisé en ce que le mécanisme de percussion (640) présente un corps de percussion à ressort (641) avec un élément de ressort (642) et est couplé à un organe de tension de ressort associé (646) au moyen d'un guidage à billes (680).
  10. Adaptateur d'outil selon l'une quelconque des revendications 5 à 9, caractérisé en ce que le mécanisme de percussion (640) présente un embrayage actionnable (620) pour l'activation du fonctionnement de percussion du mécanisme de percussion (640).
  11. Adaptateur d'outil selon la revendication 9 ou 10, caractérisé en ce que l'embrayage (620) est configuré pour permettre, lors d'un actionnement, un entraînement de l'organe de tension de ressort (646) pour tendre et libérer l'élément de ressort (642).
  12. Adaptateur d'outil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un engrenage (310) est disposé dans le boîtier d'adaptateur (305).
  13. Adaptateur d'outil selon l'une quelconque des revendications précédentes, caractérisé par un engrenage de multiplication (700), qui est configuré pour augmenter une vitesse de rotation en vue de l'entraînement du mécanisme de percussion (640) par rapport à une vitesse de rotation d'un organe de sortie (698).
  14. Adaptateur d'outil selon l'une quelconque des revendications précédentes, caractérisé en ce que le logement d'outil (340, 440, 606) est configuré pour recevoir des outils insérables SDS-plus et/ou SDS-Quick.
  15. Adaptateur d'outil selon l'une quelconque des revendications précédentes, caractérisé en ce que le logement d'outil (340, 440, 606) est configuré pour recevoir des outils insérables à queue ronde et/ou des outils insérables HEX.
  16. Adaptateur d'outil selon l'une quelconque des revendications précédentes, qui est configuré pour un entraînement par emboîtement par la machine-outil manuelle (100).
  17. Adaptateur d'outil selon la revendication 16, caractérisé en ce qu'un organe d'entraînement (380, 697) du mécanisme de percussion (320, 420, 640) présente une extrémité libre (382, 669), sur laquelle un contour d'entraînement polygonal (384, 665) est formé.
  18. Système d'outil (200) avec une machine-outil manuelle (100), qui présente un corps (105) avec une interface de fixation (170), et avec un adaptateur d'outil (300), qui présente un boîtier d'adaptateur (305), sur lequel sont disposées une unité de verrouillage (350) pour le verrouillage de l'adaptateur d'outil (300) à l'interface de fixation (170) de la machine-outil manuelle (100) et un logement d'outil (340) destiné à recevoir un outil insérable (150), caractérisé en ce qu'un mécanisme de percussion (320) est disposé dans le boîtier d'adaptateur (305) et est configuré pour appliquer à l'outil insérable (150), dans le fonctionnement avec percussion de l'adaptateur d'outil (300), des coups portés dans la direction axiale du logement d'outil (340).
  19. Système d'outil selon la revendication 18, caractérisé en ce que la machine-outil manuelle (100) se présente sous la forme d'une perceuse sur batterie ou d'une visseuse sur batterie.
  20. Système d'outil selon la revendication 18 ou 19, caractérisé en ce que l'adaptateur d'outil (300) est configuré en vue d'un entraînement par emboîtement par la machine-outil manuelle (100).
  21. Système d'outil selon l'une quelconque des revendications 18 à 20, caractérisé en ce que la machine-outil manuelle (100) présente une broche d'entraînement (120) et le logement d'outil (606) de l'adaptateur d'outil (600) présente une broche de sortie (698), dans lequel la broche d'entraînement (120) et la broche de sortie (698) présentent, après une fixation de l'adaptateur d'outil (600) à la machine-outil manuelle (100), un axe de rotation commun (619).
EP14713817.6A 2013-04-03 2014-03-26 Adaptateur d'outil destiné à une machine-outil manuelle Active EP2981395B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013205833 2013-04-03
DE102013218289 2013-09-12
DE102014205555.5A DE102014205555A1 (de) 2013-04-03 2014-03-25 Werkzeugvorsatz für eine Handwerkzeugmaschine
PCT/EP2014/056027 WO2014161752A1 (fr) 2013-04-03 2014-03-26 Adaptateur d'outil destiné à une machine-outil manuelle

Publications (2)

Publication Number Publication Date
EP2981395A1 EP2981395A1 (fr) 2016-02-10
EP2981395B1 true EP2981395B1 (fr) 2017-05-17

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EP14713817.6A Active EP2981395B1 (fr) 2013-04-03 2014-03-26 Adaptateur d'outil destiné à une machine-outil manuelle

Country Status (5)

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US (1) US10259111B2 (fr)
EP (1) EP2981395B1 (fr)
CN (1) CN105102190B (fr)
DE (1) DE102014205555A1 (fr)
WO (1) WO2014161752A1 (fr)

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DE102015224225A1 (de) * 2015-12-03 2017-06-08 Flex-Elektrowerkzeuge Gmbh Handgehaltene Werkzeugmaschine
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DE102016225114A1 (de) 2015-12-16 2017-06-22 Robert Bosch Gmbh Werkzeugbasismodul
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EP3749806B1 (fr) 2018-05-29 2022-09-21 Robel Bahnbaumaschinen GmbH Tirefonneuse-boulonneuse à percussion pour serrer et desserrer des écrous et des boulons d'une voie ferrée
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Also Published As

Publication number Publication date
DE102014205555A1 (de) 2014-10-09
US20160346911A1 (en) 2016-12-01
EP2981395A1 (fr) 2016-02-10
US10259111B2 (en) 2019-04-16
CN105102190A (zh) 2015-11-25
WO2014161752A1 (fr) 2014-10-09
CN105102190B (zh) 2018-10-16

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