EP1513653B1 - Mandrin pour la reception d'outils utilisables par rotation autour de leur axe - Google Patents

Mandrin pour la reception d'outils utilisables par rotation autour de leur axe Download PDF

Info

Publication number
EP1513653B1
EP1513653B1 EP03730006A EP03730006A EP1513653B1 EP 1513653 B1 EP1513653 B1 EP 1513653B1 EP 03730006 A EP03730006 A EP 03730006A EP 03730006 A EP03730006 A EP 03730006A EP 1513653 B1 EP1513653 B1 EP 1513653B1
Authority
EP
European Patent Office
Prior art keywords
clamp
sleeve
receiving cavity
chuck
bit
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.)
Expired - Lifetime
Application number
EP03730006A
Other languages
German (de)
English (en)
Other versions
EP1513653A2 (fr
Inventor
Martin Strauch
Michael Abel
André Müller
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.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
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
Priority claimed from DE10254339.9A external-priority patent/DE10254339B4/de
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Publication of EP1513653A2 publication Critical patent/EP1513653A2/fr
Application granted granted Critical
Publication of EP1513653B1 publication Critical patent/EP1513653B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S279/00—Chucks or sockets
    • Y10S279/904—Quick change socket
    • Y10S279/905—Quick change socket with ball 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
    • Y10T279/17666—Radially reciprocating jaws
    • Y10T279/17692—Moving-cam actuator
    • Y10T279/17743—Reciprocating cam sleeve
    • Y10T279/17752—Ball or roller jaws
    • 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
    • Y10T279/34—Accessory or component
    • Y10T279/3406—Adapter

Definitions

  • the invention relates to a chuck according to the preamble of claim 1 or claim 2.
  • Such foods describe the DE 29 34 428 or the DE 199 32 369 .
  • the required force is supplied by a compression spring absorbing the actuating sleeve against whose spring force the sleeve is displaced in the release direction.
  • the EP 1 122 032 A2 describes a chuck in which the bottom of the receiving cavity is formed by a magnet.
  • the actuating sleeve can be switched back and forth in the axial direction between two detent positions.
  • the WO00 / 66329 describes a chuck, in which the bit stuck in the receiving cavity releasing the holding element is slightly displaced in the withdrawal direction.
  • the US 6,199,872 B1 describes a chuck with a spring-loaded ram. The compression spring is tensioned when the bit is inserted into the receiving cavity and relaxes when the holding member is brought out of its operative position, so that the bit is displaced in the outward direction of the plunger.
  • the invention has for its object to further develop a generic feed benefits advantageous and in particular to facilitate the removal of the bit.
  • the clamping section is displaceable relative to the sleeve section.
  • the magnet can be brought out of contact with the end face.
  • the holding force which the magnet exerts on the bit is considerably reduced, so that even small and, in particular, short bits can be easily removed from the chuck.
  • the bit is supported with a ring region of its end face, which is designed in particular as a bevel on a radial projection. This radial projection may surround a cavity in which the magnet is located.
  • the magnet may be fixedly connected to a portion of the clamping portion.
  • This clamping section has a polygonal cross-sectional shape.
  • This clamping section can be arranged rotationally fixed, but axially displaceable within the insertion portion of the chuck. He is stored there axially displaceable.
  • the clamping section can be axially displaceable between two stops, the one stop corresponding to the axial position of the clamping section, in which the magnet is in planar contact with the end face of the bit.
  • the other stop may be associated with the spacing position of the magnet from the face of the bit.
  • this chuck can be brought into a pick-up position by moving the actuating sleeve. However, in the preferred embodiment of the chuck, this is not necessary because the ball can dodge backwards as it encounters the back chamfer of the bit. If the bit is inserted into the receiving cavity, it lies flat against the bottom of the cavity, that of the axially displaceable magnet is formed on. He is held by the magnet. The bit is also held by the ball. If the bit is to be removed from the chuck, the actuating sleeve is displaced away from the clamping section, ie towards the opening of the receiving cavity.
  • Another aspect of the invention is also concerned with the problem of simplifying the removal of a bit from a generic food.
  • the actuating member as a result of a shift einnes Einspannabiteses relative to the sleeve portion in which the clamping portion is inserted, in its retaining element out of effect holding position can be determined.
  • the holding element is brought out of its operative position, so that the bit can be pulled out without the need for holding the actuator in its release position.
  • This function is particularly advantageous if the end of the clamping section, which is inserted in the sleeve section, carries a magnet which abuts the end face of the bit in the clamping position.
  • the magnet By shifting out of the Einspannabiteses from the sleeve, the magnet is separated from the bit.
  • the bit is supported with its end edge on a snap ring, which rests in a circumferential groove of the sleeve portion.
  • the axial displaceability of the clamping section is stop-limited.
  • a spring ring which lies in a circumferential groove of the sleeve portion. It forms a radial projection, which rests in a circumferential groove of the clamping section.
  • the axial width of the circumferential groove of the clamping section determines its displacement path.
  • the actuator is preferably determined by at least one in a wall recess of the sleeve portion locking body, which enters a locking recess of the actuator, found.
  • the blocking body can be a ball and the locking recess can be formed by an annular groove.
  • the diameter of the locking body is greater than the wall thickness of the sleeve portion. This has the consequence that the blocking body either protrudes beyond the outer wall of the sleeve portion or projects into the sleeve cavity. If the blocking body projects beyond the outer wall of the sleeve, it can enter the locking recess of the actuating member in order to hold it in the release position.
  • the locking body rests on a lateral surface portion of the clamping section and is supported by it.
  • the blocking body With the clamping portion 15 pushed in inward direction, the blocking body can dip into an evasion niche of the clamping portion. In this position, the clamping portion of the held by a spring in the locking position actuator is axially motion-bound. In this, the clamping position of the actuating member corresponding position of the locking body is prevented by the cylindrical inner cavity wall of the actuating member from being displaced in the radial outward direction.
  • the sleeve forming the actuator is displaced in the removal direction of the bit from the locking position to the release position. This takes place against the force of a spring which is supported against the sleeve section.
  • the ball forming the blocking body can enter the ring recess of the actuating sleeve forming the locking recess.
  • the ball then emerges from the evasion niche of the chucking section so that the chucking section can be displaced.
  • a lateral surface section of the Einspamabiteses pushes under the wall recess in which the ball rests, so that a radial displacement of the ball is not possible.
  • the ball locks the return displacement of the Actuating sleeve, The bit can be easily removed from therachöl- tion.
  • the chuck has a male portion 3 and a hexagonal chuck portion 15.
  • This male portion 3 may be made of metal and has a receiving cavity 2 for a screwdriver bit 1, in the form of a bit.
  • a clamping shaft 15 protrudes from the insertion section, the hexagonal section of which can be inserted into a chuck of an electric screwdriver. Regarding the configuration of this clamping shaft reference is made to the cited prior art.
  • the clamping section 15 can be pressed into a cavity of the insertion section 3.
  • the receiving cavity 2 has a hexagonal cross-section.
  • a window In this opening formed by the window is a ball 4, which forms the holding element and whose diameter is greater than the wall thickness, so that the ball 4 may extend into the receiving cavity 2, to there on the vertices of a corner recess of the polygonal shaft of the Supporting bit holding this.
  • the ball 4 is acted upon by an oblique clamping flank 10 of an actuating sleeve 5.
  • the actuating sleeve 5 is against the remindstellkrart a helical compression spring 11 of the in Fig. 1 , or 6 illustrated clamping position in the in Fig.
  • the helical compression spring 11 is supported on an annular support shoulder. This support shoulder is formed by a lying in a groove of the insertion portion 3 ring 14, against which also the actuating sleeve 5 is supported in the clamping position
  • the bottom 7 of the receiving cavity 2 is formed by a circular cylindrical magnet 9. Between the outer wall of the magnet 9 and the Mehrkantecke the receiving cavity 2 forms a free gusset. In this free gusset the spring end 8 is guided.
  • a bit 1 is inserted in a receiving cavity 2 of a plug-in section 3, which is designed overall as a polygonal sleeve.
  • a ball 4 which is acted upon by a spring in the direction of the opening of the receiving cavity 2.
  • a clamping edge 10 of an actuating sleeve 5 the ball is acted upon radially inwardly.
  • the clamping portion 15 is formed as a hexagon and is intended to be inserted with its free end in the lining of an electric screwdriver can.
  • the section 15 'of the Einspannabiteses 15 is rotatably but axially displaceable in the plug-in section 3.
  • a magnet 9 In front of the head of the section 15 is a magnet 9.
  • the magnet 9 is fixedly connected to the section 15.
  • the Axialverlageriana the Binspannabiteses 15 is limited stop.
  • This radial projection 20 leaves a central opening in which the magnet 9 is located.
  • the magnet 9 lies in the in Fig. 1 shown position of use with its surface 7 area on the end face 1 'from. If an axial force is exerted on the clamping section 15, it is transmitted via the magnet 9 directly into the end face 1 'of the bit 1. On the other hand, if a tension greater than the holding force of the magnet 9 on the end face 1 'of the bit 1 is exerted on the clamping section 15, the magnet 9 is removed from the end face 1' of the bit 1.
  • the pulling force can be applied by displacing the actuating sleeve 5 in the direction of the opening of the receiving cavity 2 in the case of a clamping section 15 clamped in a chuck of an electric screwdriver or the like. Simultaneously with this displacement, the ball 4 is released to dodge in the radial direction to the outside.
  • FIGS. 3 and 4 illustrated embodiment corresponds in terms of its operation substantially to the embodiment of FIGS. 1 and 2 .
  • the hexagonal clamping section 15 has corner recesses into which a spring ring 23 surrounding the clamping section 15 rests. This spring ring is located in a ring recess 25 of the insertion portion 3.
  • the annular recess 25 of the insertion portion 3 is formed by a plugged onto the end of the insertion portion 3 sleeve portion.
  • an annular step portion 24 On this annular step portion 24, a diameter-wide wall portion 22 of the sleeve end portion 21 is attached. He sits there in a tight fit.
  • the actuating sleeve 5 is formed in two parts.
  • An inner portion 5 sliding directly on the sleeve portion 21 has an axially circumferential groove.
  • a second sleeve section 5 "made of plastic is rotatably disposed in this peripheral groove 5.
  • the lining can also be held during the turning operation on this second sleeve section 5".
  • the sleeve 5 "can rotate freely in the groove receiving it.
  • the in the FIGS. 6 to 8 shown bit has a throat 29.
  • In the in FIG. 6 shown locking position projects a retaining ball 4 in some areas in the receiving cavity 2 and rests on a rear valley flank, so that the bit can not be pulled out of the receiving cavity 2.
  • the frontal bevel of the bit abuts against a snap ring 20 which rests in a circumferential groove of the receiving cavity 2.
  • the ball 4 is acted upon by a clamping flank 10 of the sleeve part 5.
  • the sleeve 5 is by means of a spring 11 in the in FIG. 10 held shown locking position.
  • the rear end face of the bit 1 bears against an end face 7 of a clamping section 15.
  • the end face 7 is formed by a magnet 9, which rests in a bore 30 of the end face of the clamping section 15.
  • the sleeve portion 21 has two diametrically opposite wall recesses 31.
  • the diameter of the substantially circular wall recess 31 corresponds to slightly more than the diameter of the recess 31 eino in the wall recess ball 27.
  • the diameter the detent ball 27 is greater than the wall thickness of the sleeve portion 21, so that the detent ball 27 either partially protrudes into the cavity of the sleeve portion 21 or protrudes beyond the outer wall of the sleeve portion 21.
  • blocking position protrudes the locking ball 27 into the cavity of the sleeve portion 21 into it.
  • a portion of the clamping section 15 a In this cavity is axially movable, a portion of the clamping section 15 a.
  • the chucking portion 15 has two diametrically opposite alternate recesses 28. These recesses 28 may be formed by a circumferential groove.
  • the displacement of the Einspannabiteses is limited by a snap ring 17 which rests in an inner groove of the sleeve portion 21 and radially inwardly rests in a ring recess 16 of the clamping section 15
  • the axial width of the recess 16 defines the axial displacement path of the clamping section 15.
  • the feeding of the feed with a new bit is done in reverse order.
  • the bit can in the in FIG. 8 shown operating position of the bit as far into his Aufjanahmehöhlung 2 are inserted until his face or the end face side bevel touches the snap ring 20.
  • the detent ball 27 can dodge radially inwardly into the evasive cavity 28 or circumferential groove, so that the actuating sleeve 5 for displacement into the locking position ( FIG. 6 ) is released. This shift takes place by the force of the tensioned spring 11.
  • the retaining ball 4 is axially displaceable in a window of the sleeve wall. It is displaceable against the force of a spring 32 in the insertion direction of the bit. If the end face of the bit acts on the retaining ball 4, then the retaining ball 4 can displace in the direction of insertion of the bit with simultaneous tension of the spring 32. It then slides along the clamping flank 10 and can thereby move radially outward until it passes over the lateral surface of the bit. The bit can then be completely inserted into the stop position in the receiving cavity 2 (cf. FIG. 9 ). In this position, the retaining ball 4 acts without even in the corner recess surgeo as pull-out protection for the bit

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (11)

  1. Mandrin pour la réception d'outils (1) utilisables par rotation autour de leur axe, en particulier des embouts de tournevis, avec une section d'enfichage (3) présentant un creux récepteur (2) de section transversale ovale, dans lequel creux récepteur (2) l'outil peut être assuré de ne pas être retiré du creux récepteur (2) au moyen d'un élément de retenue (4) affecté à la paroi du creux, lequel élément de retenue (4) peut être mis hors service par coulissement d'un organe de commande, en particulier sous la forme d'une douille de commande (5), dans lequel l'outil (1) s'appuie vers l'arrière sur le creux récepteur (2) et s'applique par son front arrière (1') sur un aimant (9), caractérisé en ce que l'aimant (9) peut être mis hors application avec le front (1') à la suite d'un coulissement d'une section de serrage (15) vis-à-vis d'une section de douille (21).
  2. Mandrin pour la réception d'outils (1) utilisables par rotation autour de leur axe, en particulier des embouts de tournevis, avec une section d'enfichage (3) présentant un creux récepteur (2) de section transversale ovale, dans lequel creux récepteur (2) l'outil peut être assuré de ne pas être retiré du creux récepteur (2) au moyen d'un élément de retenue (4) affecté à la paroi du creux, lequel élément de retenue (4) peut être mis hors service par coulissement d'un organe de commande, en particulier sous la forme d'une douille de commande (5), dans lequel l'outil (1) s'appuie vers l'arrière sur le creux récepteur (2) et présente une section de serrage (15) s'enfichant dans une section de douille (21), caractérisé en ce que l'organe de commande (5) peut être fixé dans sa position maintenant l'élément de retenue (4) hors service à la suite d'un coulissement de la section de serrage (15) vis-à-vis de la section de douille (21).
  3. Mandrin selon la revendication 1, caractérisé en ce que l'aimant (9) est fixé à une section (15') de la section de serrage (15), qui peut être prolongée dans sa direction axiale de manière limitée en butée.
  4. Mandrin selon l'une quelconque des revendications précédentes, caractérisé par une butée formée d'une saillie radiale (17) s'engageant dans un évidement annulaire (16).
  5. Mandrin selon la revendication 4, caractérisé en ce que l'évidement annulaire (16) est affecté à la section de serrage (15) et la saillie radiale (15) à la section de douille (21).
  6. Mandrin selon la revendication 4, caractérisé en ce que la saillie radiale (17) est formée d'un circlip.
  7. Mandrin selon la revendication 1, caractérisé en ce que l'aimant (9) est enfiché dans un orifice de la partie avant de la section de serrage (15), en particulier collé ou scellé.
  8. Mandrin selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de retenue (4) est un élément d'appui agissant dans la direction radiale sur la tige de serrage de l'outil (1), lequel élément d'appui est sollicité par un flanc de serrage (10) de la douille de commande (5) sollicitée par un ressort à l'encontre du sens de dégagement (L).
  9. Mandrin selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe de commande (5) peut être bloqué avec au moins un corps de verrouillage (27) logé dans un évidement de paroi (31) et s'engageant dans un évidement de verrouillage (26) pour l'organe de commande (5).
  10. Mandrin selon la revendication 8, caractérisé en ce que le corps de verrouillage (27) est une bille et l'évidement de verrouillage (26) une rainure annulaire.
  11. Mandrin selon la revendication 8 ou 9, caractérisé en ce que, lorsque la section de serrage (15) est déplacée dans la section de douille (21), le corps de verrouillage (27) se situe par zones dans une niche d'évitement (28) de la section de serrage (15) et est soutenu par une section de surface d'enveloppe de la section de serrage (15) lorsque la section de serrage (15) est retirée.
EP03730006A 2002-06-10 2003-05-12 Mandrin pour la reception d'outils utilisables par rotation autour de leur axe Expired - Lifetime EP1513653B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10225505 2002-06-10
DE10225505 2002-06-10
DE10254339.9A DE10254339B4 (de) 2002-06-10 2002-11-21 Futter zur Aufnahme von durch Drehen um ihre Achse verwendbare Werkzeuge
DE10254339 2002-11-21
PCT/EP2003/004920 WO2003103901A2 (fr) 2002-06-10 2003-05-12 Mandrin pour la reception d'outils utilisables par rotation autour de leur axe

Publications (2)

Publication Number Publication Date
EP1513653A2 EP1513653A2 (fr) 2005-03-16
EP1513653B1 true EP1513653B1 (fr) 2012-09-19

Family

ID=29737583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03730006A Expired - Lifetime EP1513653B1 (fr) 2002-06-10 2003-05-12 Mandrin pour la reception d'outils utilisables par rotation autour de leur axe

Country Status (5)

Country Link
US (1) US7469909B2 (fr)
EP (1) EP1513653B1 (fr)
JP (1) JP4238211B2 (fr)
AU (1) AU2003240620A1 (fr)
WO (1) WO2003103901A2 (fr)

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AU2003240620A1 (en) 2003-12-22
WO2003103901A8 (fr) 2005-02-24
WO2003103901A3 (fr) 2004-04-22
US7469909B2 (en) 2008-12-30
JP2005528991A (ja) 2005-09-29
EP1513653A2 (fr) 2005-03-16
US20060097464A1 (en) 2006-05-11
WO2003103901A2 (fr) 2003-12-18
JP4238211B2 (ja) 2009-03-18

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