EP2067577A1 - Haltevorrichtung für Bits - Google Patents

Haltevorrichtung für Bits Download PDF

Info

Publication number
EP2067577A1
EP2067577A1 EP08105722A EP08105722A EP2067577A1 EP 2067577 A1 EP2067577 A1 EP 2067577A1 EP 08105722 A EP08105722 A EP 08105722A EP 08105722 A EP08105722 A EP 08105722A EP 2067577 A1 EP2067577 A1 EP 2067577A1
Authority
EP
European Patent Office
Prior art keywords
bit
receptacle
holding device
actuating element
release auxiliary
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Withdrawn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
EP08105722A
Other languages
German (de)
English (en)
French (fr)
Inventor
Joachim Hecht
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 EP2067577A1 publication Critical patent/EP2067577A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/12—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using magnetic means

Definitions

  • the present invention relates to a holding device for bits for use in power tools, such as electric drills or cordless screwdrivers, etc.
  • Screwdrivers have long proven themselves as power tools.
  • cordless screwdrivers are popular because here no disturbing cable o. ⁇ . is available.
  • the known screwdrivers have a holding device for bits, in which the bits are held by magnetic force.
  • the bits are arranged in a receptacle and can be exchanged by pulling in the axial direction.
  • C-bits which have a hexagonal circumference with small recesses at the edges
  • E-bits which have a hexagonal circumference with a circumferential groove
  • the C-bits have only a short axial length.
  • the holding device according to the invention with the features of claim 1 has the advantage that it additionally supports the release process when releasing the bit. As a result, at least part of the magnetic holding force can be overcome, so that removal of the bit from the holding device by hand is easily possible. This is particularly easy even if the bit is very short and accordingly projects only to a small extent from the recording of the fixture.
  • the holding device a recording with a a magnet arranged on one end of the receptacle and a locking element.
  • the locking element locks a bit inserted in the receptacle.
  • the holding device comprises an actuating element which can be actuated from the outside and actuates the locking element in order to lock or unlock the bit in the receptacle.
  • a release auxiliary is disposed at a position near an end portion of the inserted bit.
  • the release aid is engageable with the end portion of the bit when the locking member no longer locks the bit and spaces the bit from the magnet by a gap width.
  • a spring element exerts a biasing force on the actuating element and returns the actuating element to the original position after removal of the manual force for actuating the actuating element.
  • the actuating element comprises a first ramp, which cooperates with the release auxiliary element.
  • the release auxiliary element can come into contact with the ramp and press in the radial direction against an end region of the bit located in the receptacle. Since the operation of the actuating element at the same time the locking element is unlocked, a slight axial movement of the bit against the magnetic holding force can be achieved with one operation.
  • the first spring element is supported directly on the receptacle, for example on a shoulder, or on a stop arranged on the receptacle.
  • the locking element and / or the release auxiliary element of the holding device is preferably a ball or a pin or a metal sheet.
  • the locking element preferably engages in a recess in the bit and locks the bit in the receptacle.
  • the actuating element is in the starting position such that the bit is in the locked state.
  • the actuating element has a second ramp, which is in contact with the locking element. Via the second ramp, a radial movement of the locking element between the locked and unlocked state can also be achieved.
  • the holding device further comprises a separate ejection component, which is in contact with the release auxiliary element.
  • the ejection component actuates the release auxiliary element.
  • the ejection component preferably comprises a ramp, which can be brought into contact with the release auxiliary element.
  • the holding device further comprises a second spring element, which exerts a biasing force on the ejection member, when the actuating element unlocks the locking element.
  • a second spring element which exerts a biasing force on the ejection member, when the actuating element unlocks the locking element.
  • a spring force of the second spring member for biasing the release auxiliary member is equal to or greater than the magnetic force for holding the bit in the receptacle. This will ensure that the bit is removed from the magnet a little bit, so that a very easy removal of the bit by hand from the recording is guaranteed.
  • the actuating element is a slide, which is guided on the receptacle.
  • the actuating element is a sleeve, which is arranged around the receptacle and is displaceable in the axial direction.
  • the sleeve has the advantage that it is very easy to grip.
  • the holding device according to the invention is preferably used in a motor-operated tool, such as a cordless screwdriver or other power tool.
  • the holding device according to the invention ensures that, in particular, the small bits which are very successful in the market can be used without problems, without tongs or other aids being necessary for releasing the bit from the holding device.
  • the holding device 1 comprises a receptacle 2 to receive a bit 5.
  • the bit 5 is in this embodiment, a Phillips screwdriver, which has a hexagonal shaft. At the end of the bit 5, a circumferential chamfer 5a is formed. In a central region at the edges of the hexagonal base body of the bit 5 recesses 5b are formed.
  • the receptacle 2 of the holding device 1 comprises a receiving opening 2a.
  • a first radial opening 3 and a second radial opening 9 are further formed radially to the axial direction XX of the holding device.
  • a magnet 4 is arranged in the receptacle.
  • the magnet 4 has a holding function with respect to a bit 5 introduced into the receptacle 2.
  • a locking element 6 is also provided.
  • the locking element 6 is arranged in the first radial opening 3 in the receptacle 2.
  • the holding device 1 comprises an actuating element 7 with a first ramp 7a and a second ramp 7b.
  • the actuator 7 acts together with the locking element 6 to lock or release the bit 5 in the receptacle 2.
  • a first spring element 10 is provided, which is supported with one end on the actuating element 7 and is supported at its other end to a first stop 11.
  • the first stop 11 is arranged on the receptacle 2.
  • a second stop 12 defines a rest position of the actuating element 7.
  • FIG. 1 shows the locked position of the holding device 1, in which the bit is locked in the receptacle 2 by means of the locking element 6.
  • the locking element 6 engages in one of the recesses 5b of the bit 5.
  • the bit 5 is in contact with the magnet 4.
  • the first spring element 10 ensures that the actuating element 7 remains in this locked position.
  • a surface 7c directed in the axial direction XX is engaged with the locking element 6.
  • the surface 7c is arranged immediately adjacent to the second ramp bevel 7b.
  • the force of the first spring element 10 must be overcome.
  • a radially acting on the locking element 6 force of the actuating element 7 is repealed, since the surface 7b is disengaged from the locking element 6.
  • the first run-on slope 7a is brought into contact with the release auxiliary element 8 by the axial movement of the actuating element 7. Thereby, the release auxiliary member 8 is moved radially inward in the direction of the arrow B.
  • the release auxiliary element 8 comes into contact with the chamfer 5a of the bit 5, so that the bit 5 is moved away from the magnet 4 in the direction of the arrow C.
  • the first spring element 10 ensures that the actuator 7 back into the in FIG. 1 shown starting position returns.
  • the actuating element 7 is advanced in the direction of arrow A, so that the locking element 6 is freely movable in the radial direction, so that the bit 5 can be inserted.
  • the bit is further attracted by the magnet 4 and attracted by means of the magnet in the defined end position.
  • the actuating element 7 can be released again, wherein an inner side of the actuating element 7 is moved over the second bevel 7b to the surface 7c via the locking element 6.
  • the actuating element 7 of the first embodiment is designed as a slide.
  • a holding device for a power tool can be provided, which enables a secure holding of the bit 5 in the receptacle 2 and, if the bit 5 is to be replaced, after actuation of the actuating element 7, an automatic release of the bit 5 is carried by the magnet 4, so that a simple removal of the bit 5 from the receptacle 4 by hand is possible.
  • FIG. 3 a holding device 1 according to a second embodiment of the invention described in detail. Identical or functionally identical parts are denoted by the same reference numerals as in the first embodiment.
  • the second embodiment corresponds essentially to the first embodiment, in contrast to the second embodiment in the in FIG. 3 shown locked position which is formed as a ball locking element 6 is held by the second ramp 7b.
  • the locking member 6 is pressed by the second ramp 7b in the recess 5b in the bit 5, whereby the bit 5 is locked.
  • This can be dispensed with a second stop at the end of the actuating element 7, since the end position is defined by the locked position of the locking element.
  • this embodiment corresponds to the previous embodiment, so that reference can be made to the description given there.
  • FIGS. 4 and 5 show a holding device 1 according to a third embodiment of the invention, wherein identical or functionally identical parts are again denoted by the same reference numerals as in the preceding embodiments.
  • FIG. 4 shows the locked state of the bit 5, wherein the second ramp 7b on the locking member 6 in the radial direction by the biasing force of the first spring member 10 exerts a radial force, so that the locking element 6 in a recess 5b of the bit 5, the bit 5 locks.
  • the actuator 7, as in FIG. 5 shown manually displaced in the direction of the arrow A ', whereby the first spring element 10 is compressed.
  • FIG. 6 shows a holding device 1 according to a fourth embodiment of the invention.
  • the same or functionally identical parts are again denoted by the same reference numerals as in the preceding embodiments.
  • the fourth embodiment substantially corresponds to the third embodiment, wherein the release auxiliary member of the fourth embodiment is a pin 18.
  • the pin 18 is provided with rounded end portions, so that it can be securely brought into contact with the chamfer 5a at the bit 5 or the first ramp 7a on the actuating element 7, without jamming occurring.
  • the second radial opening 9 is formed according to the dimensions of the pin 18. Otherwise, this embodiment corresponds to the third embodiment, so that reference can be made to the description given there.
  • FIG. 7 shows a holding device 1 according to a fifth embodiment of the invention, again with identical or functionally identical components are denoted by the same reference numerals as in the preceding embodiments.
  • the holding device 1 additionally comprises an ejection component 14 with a ramp 14a.
  • the ejection member 14 is formed as a sleeve and the ramp 14a is engageable with the release auxiliary member 18, which is a pin in this embodiment, in contact.
  • the first spring element 10 is arranged between the ejection component 14 and the actuating element 7.
  • the actuating element 7 has a stepped shoulder 7d.
  • the first spring element 10 is supported between the shoulder 7d and the ejection component 14.
  • a stop 15 prevents the spring force of the first spring element 10 from pushing the actuating element 7 too far beyond the holding device.
  • the actuator 7 which is a sleeve in this embodiment, in the direction of the arrow A 'moves, so that an additional force by compressing the first spring member 10 on the pin 18 on the Run-on slope 14a of the ejection member 14 is exercised.
  • a stop 16 is additionally arranged on the outer circumference of the receptacle 2. Otherwise, this embodiment corresponds to the previous embodiments, so that reference can be made to the description given there.
  • FIGS. 8 and 9 a holding device 1 according to a sixth embodiment of the invention described in detail. Identical or functionally identical parts are again denoted by the same reference numerals as in the preceding embodiment.
  • the holding device 1 in contrast to the preceding embodiments, two spring elements, namely a first spring element 10 and a second spring element 20, on.
  • the second spring element 20 is arranged between a stop 11 and an ejection component 14 for the release auxiliary element 8.
  • the first spring element 10 is arranged between a further stop 15 and the actuating element 7, more precisely a shoulder 7d on the actuating element 7.
  • the first spring element 10 sets the locked position, as in FIG. 8 shown, for sure.
  • the spring force of the first spring element 10 is greater than the spring force of the second spring element 20.
  • the actuator 7 becomes, as in FIG. 9 indicated, moved in the direction of arrow A.
  • the first spring element 10 is compressed and the locking element 6 is released.
  • This can now automatically move the second spring element 20, the ejection member 14 in the direction of arrow D, so that the ramp 14a of the ejection member 14 presses against the release auxiliary element 8.
  • the release auxiliary element 8 in the radial direction, as indicated by the arrow B, pressed against the chamfer 5a on the bit 5, so that the bit 5 is spaced from the magnet 4. This creates a gap 13 between the magnet 4 and the end of the bit 5, so that the bit 5 can be easily removed by hand.
  • FIG. 10 shows a holding device 1 according to a seventh embodiment of the invention, wherein identical or functionally identical parts with the same reference numerals as in the previous embodiment are designated.
  • the seventh embodiment substantially corresponds to the sixth embodiment, wherein the release auxiliary member in the seventh embodiment is a pin 18. Otherwise, this embodiment corresponds to the sixth embodiment, so that reference can be made to the description given there.
  • FIG. 11 shows a holding device 1 according to an eighth embodiment, wherein identical or functionally identical parts are again denoted by the same reference numerals as in the preceding embodiments.
  • the eighth embodiment substantially corresponds to the sixth and seventh embodiments, in contrast to a direction of movement of the actuating element 7 is reversed for locking or unlocking.
  • the first spring element 10 is arranged between the stop 11 and the actuating element 7.
  • the second spring element 20 is arranged as in the sixth or seventh embodiment between the stop 11 and the ejection member 14.
  • the position of the shoulder 7d and the second ramp 7b is exchanged, so that the first spring element 10 rests on the shoulder 7d of the actuating element 7.
  • the direction of movement of the actuating element 7 for unlocking is in FIG. 11 indicated by the arrow A '.
  • This arrangement allows a particularly compact design, in particular in the axial length of the receptacle 2. Otherwise, this embodiment corresponds to the previous embodiments, so that reference may be made to the description given there.
  • FIG. 12 shows a ninth embodiment of a holding device 1 according to the invention, wherein identical or functionally identical parts are denoted by the same reference numerals as in the preceding embodiments.
  • the ninth embodiment substantially corresponds to the sixth embodiment, and unlike the sixth embodiment, in the ninth embodiment, the position of the ejection member 14 in the axial direction on the release auxiliary member 8 has been changed.
  • the ejection member 14 is disposed on the other side of the release auxiliary member 8 in the direction opposite to the receiving opening 2a, wherein the ramp 14a of the ejection member 14 is also in contact with the ball as a release aid.
  • the second spring element 20 is supported on the stop 12, so that it is arranged between the stop 12 and the ejection component 14.
  • the actuating direction A of the actuating element 7 is again as in the sixth embodiment. Otherwise, this embodiment corresponds to the previous embodiments, so that reference can be made to the description given there.
  • the actuating element (7) both as a slide and as a sleeve which completely surrounds the receptacle (2) may be formed.
  • the additional ejection component 14, if provided, can be provided as a sliding element or as a sleeve-like element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Coating Apparatus (AREA)
EP08105722A 2007-12-05 2008-11-03 Haltevorrichtung für Bits Withdrawn EP2067577A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710058522 DE102007058522A1 (de) 2007-12-05 2007-12-05 Haltevorrichtung für Bits

Publications (1)

Publication Number Publication Date
EP2067577A1 true EP2067577A1 (de) 2009-06-10

Family

ID=40352238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105722A Withdrawn EP2067577A1 (de) 2007-12-05 2008-11-03 Haltevorrichtung für Bits

Country Status (3)

Country Link
EP (1) EP2067577A1 (zh)
CN (1) CN101450480B (zh)
DE (1) DE102007058522A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8381830B2 (en) 2009-05-05 2013-02-26 Black & Decker Inc. Power tool with integrated bit retention device
US8622401B2 (en) 2009-02-27 2014-01-07 Black & Decker Inc. Bit retention device
US8800999B2 (en) 2009-02-27 2014-08-12 Black & Decker Inc. Bit retention device
EP2937181A1 (de) * 2014-04-22 2015-10-28 HILTI Aktiengesellschaft Werkzeughalter
US11065744B2 (en) 2018-07-20 2021-07-20 Milwaukee Electric Tool Corporation Tool bit holder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010002352B4 (de) * 2010-02-25 2021-03-18 Robert Bosch Gmbh Handwerkzeugmaschine
DE102015121287A1 (de) * 2015-12-07 2017-06-08 Dürr Assembly Products GmbH Vorrichtung zum automatisierten An- und Abkoppeln eines Werkzeugaufsatzes sowie Verfahren zum automatisierten Verbinden wenigstens zweier Werkstücke
TWI669194B (zh) * 2017-12-14 2019-08-21 薪螢企業有限公司 套筒

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000037220A1 (de) * 1998-12-19 2000-06-29 Felo-Werkzeugfabrik Holland-Letz Gmbh Spannfutter für auswechselbare werkzeugeinsätze
WO2000066329A1 (en) * 1999-05-03 2000-11-09 Maxtech Manufacturing Inc. Quick-connect mechanism
WO2003103901A2 (de) * 2002-06-10 2003-12-18 Wera Werk Futter zur aufnahme von durch drehen um ihre achse verwendbare werkzeuge
US20040164503A1 (en) * 2003-02-21 2004-08-26 Wei-Chuan Fan-Chiang Bit quick-release device
WO2007120893A2 (en) * 2006-04-13 2007-10-25 Insty-Bit, Inc. Automatic tool-bit holder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000037220A1 (de) * 1998-12-19 2000-06-29 Felo-Werkzeugfabrik Holland-Letz Gmbh Spannfutter für auswechselbare werkzeugeinsätze
WO2000066329A1 (en) * 1999-05-03 2000-11-09 Maxtech Manufacturing Inc. Quick-connect mechanism
WO2003103901A2 (de) * 2002-06-10 2003-12-18 Wera Werk Futter zur aufnahme von durch drehen um ihre achse verwendbare werkzeuge
US20040164503A1 (en) * 2003-02-21 2004-08-26 Wei-Chuan Fan-Chiang Bit quick-release device
WO2007120893A2 (en) * 2006-04-13 2007-10-25 Insty-Bit, Inc. Automatic tool-bit holder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8622401B2 (en) 2009-02-27 2014-01-07 Black & Decker Inc. Bit retention device
US8800999B2 (en) 2009-02-27 2014-08-12 Black & Decker Inc. Bit retention device
US9067266B2 (en) 2009-02-27 2015-06-30 Black & Decker Inc. Bit retention device
US8381830B2 (en) 2009-05-05 2013-02-26 Black & Decker Inc. Power tool with integrated bit retention device
EP2937181A1 (de) * 2014-04-22 2015-10-28 HILTI Aktiengesellschaft Werkzeughalter
WO2015162109A1 (de) * 2014-04-22 2015-10-29 Hilti Aktiengesellschaft Werkzeughalter
US10112239B2 (en) 2014-04-22 2018-10-30 Hilti Aktiengesellschaft Tool holder
US11065744B2 (en) 2018-07-20 2021-07-20 Milwaukee Electric Tool Corporation Tool bit holder

Also Published As

Publication number Publication date
DE102007058522A1 (de) 2009-06-10
CN101450480A (zh) 2009-06-10
CN101450480B (zh) 2011-08-03

Similar Documents

Publication Publication Date Title
EP2067577A1 (de) Haltevorrichtung für Bits
EP1506843B1 (de) Spanneinrichtung für Sechskantbits
EP1513653B1 (de) Futter zur aufnahme von durch drehen um ihre achse verwendbare werkzeuge
EP1922004B1 (de) Schraubendreher für knochenschrauben
EP1605837B1 (de) Kupplung für ein chirurgisches drehantriebs-handstück
EP1371455B1 (de) Kupplungsvorrichtung zum Verriegeln von Steckverbindungen bei Werkzeugen
DE102012111408B3 (de) Verriegelungsmechanismus für Steckverbinder
EP1709931B1 (de) Motorelement, insbesondere dentalmedizinisches Handstück mit einer lösbaren Kupplung für einen Werkzeughalter
DE102015223479A1 (de) Handhabungsinstrument für eine Knochenschraube
DE102007045177A1 (de) Verriegelungsvorrichtung
EP2843279B1 (de) Absperrorgan
EP1709930A1 (de) Motorelement, insbesondere medizinisches Handstück mit einer Spannzange
EP1752256A1 (de) Schraubendreher
EP2033266A1 (de) Leiteranschlussklemme
DE202010008707U1 (de) Antriebsanordnung mit Verriegelungsfunktion
DE102013016302A1 (de) Schaft eines Endoskopes
DE2551363A1 (de) Vorrichtung zum einsetzen eines elastischen rings in die umfangsnut einer bohrung
DE102019102768A1 (de) Drehverschluss
DE102011078888A1 (de) Futter für einen Schraubendreher-Einsatz
DE10254339A1 (de) Futter zur Aufnahme von durch Drehen um ihre Achse verwendbare Werkzeuge
EP1122032B1 (de) Spannfutter für Schaftenden von Werkzeugseinsatzstücken, insbesondere Schraubendreherbits
DE102010064070A1 (de) Vorrichtung und Verfahren zum Festlegen eines Federtellers an einem Stößel
DE10043619A1 (de) Schnellkupplung zum Verbinden vonn Leitungsenden
DE102018002323A1 (de) Abziehvorrichtung zum Abziehen eines Werkstücks aus einer Montageposition
DE9317664U1 (de) Medizinisches Instrument mit einem zentralen Arbeitsstab und mit einem Handgriff

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20091210

AKX Designation fees paid

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20100226

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20161005