EP0755754B1 - Dispositif de vissage - Google Patents

Dispositif de vissage Download PDF

Info

Publication number
EP0755754B1
EP0755754B1 EP96810361A EP96810361A EP0755754B1 EP 0755754 B1 EP0755754 B1 EP 0755754B1 EP 96810361 A EP96810361 A EP 96810361A EP 96810361 A EP96810361 A EP 96810361A EP 0755754 B1 EP0755754 B1 EP 0755754B1
Authority
EP
European Patent Office
Prior art keywords
spindle
drive pinion
coupling element
spring
ball
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
EP96810361A
Other languages
German (de)
English (en)
Other versions
EP0755754A1 (fr
Inventor
Anton Neumaier
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0755754A1 publication Critical patent/EP0755754A1/fr
Application granted granted Critical
Publication of EP0755754B1 publication Critical patent/EP0755754B1/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
    • B25B23/0064—Means for adjusting screwing depth
    • 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
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • 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
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/141—Mechanical overload release couplings

Definitions

  • the invention relates to a handheld device, such as a screwdriver, with a housing, one in the housing arranged motor, an axially fixed drive pinion driven by the motor, one in Housing mounted axially against the force of a spring against the drive pinion displaceable spindle and a coupling element between the drive pinion and the Spindle, wherein the coupling element by the axial displacement of the spindle in one first axial direction against the force of the spring with the drive pinion in the direction of rotation is detachable and limited axially displaceable and limited relative to the spindle is rotatable that when the drive pinion is rotated, the drive pinion coupled coupling element against the action of a restoring force relative to the spindle is rotated to a limited extent, the relative rotation being the limited axial displacement of the Coupling element in the first axial direction.
  • Electrically powered screws are used to screw in the surface Screwdrivers used with a disconnect coupling that is between a spindle and a Drive pinion is arranged.
  • the overload clutch allows after reaching the an automatic, noise and wear-free uncoupling the spindle from the drive pinion.
  • a screwdriver with a coupling is known, the one of a motor-driven first coupling part, one in the housing of the screwing device rotatably mounted, axially displaceable, second coupling part and one in the circumferential direction limited rotatable and axially displaceable against the force of a spring third Has coupling part.
  • the first coupling part is formed by a drive pinion with in Setting direction or cam bodies projecting in a second direction.
  • the second Coupling part is formed by a spindle with opposite to the setting direction or in a first direction protruding cam bodies and the third Coupling part is formed by a coupling element, which is on both faces Cam bodies is provided.
  • the spindle When pressing the screwdriver, the spindle is placed with the coupling element in between axially offset against the force of the spring, so that all cam bodies are form-fitting interlock.
  • the coupling element When transmitting torque from the drive pinion on the spindle, the coupling element is rotated relative to the spindle and axially offset. This position of the coupling element relative to the spindle remains until the Spindle is moved in the setting direction after the insertion process until the positive connection between the cam bodies of the drive pinion and the Coupling element is lifted.
  • DE-A-3 818 924 discloses a power-operated screwing tool with a housing, one in the housing, opposite the housing against the setting direction against the force of a spring axially displaceable spindle, one with a motor cooperating drive pinion and a coupling element between the Drive pinion and the spindle, the coupling element due to the axial displacement the spindle can be coupled against the setting direction with the drive pinion in the direction of rotation and can be axially displaced and rotated to a limited extent relative to the spindle, that when the drive pinion is rotated, that which is coupled to the drive pinion Coupling element limited against the action of a restoring force relative to the spindle is rotated, the relative rotation the limited axial displacement of the Coupling element causes against the setting direction.
  • the invention has for its object to provide a clutch for a handheld device, the is economical to manufacture and is lightweight and lightweight Excellent wear.
  • the task in the handheld device mentioned at the beginning solved in that the coupling element Is a ball that interacts with the stop surfaces of the spindle and through the axial Displacement of the spindle in the first axial direction with stop faces of the Drive pinion can be brought into engagement.
  • the inventive design of the coupling element enables an economical Manufacture of the handheld device because the ball is a commercially available one Item that can be bought and that interact with the ball Stop surfaces can be attached directly to the spindle and the drive pinion. Another advantage is the small size of the coupling element and its low weight, which has a positive effect on the total weight of the handheld device.
  • the stop surface of the drive pinion is expediently used by at least one parallel to the longitudinal extension of the spindle on an inner recess Circumferential surface of the drive pinion is formed. Because of this special arrangement of the Stop surfaces inside the drive pinion can change the axial length of the drive pinion and thus the overall length of the handheld device can be kept small.
  • the stop surface of the spindle is preferably of an outer circumferential surface the spindle arranged groove is formed, at least in the circumferential direction measured extension of the groove the corresponding extension of the ball Coupling element exceeds. Stop surfaces in the form of a groove have the The advantage is that they can be manufactured economically and do not protrude beyond the outer contour of the spindle. Due to the special extension of the groove, the spindle is opposite the Drive pinion can be rotated to a limited extent in the engaged state.
  • the edge advantageously runs to the respective two circumferential sides Ends of the groove inclined against the setting direction.
  • the spring is expedient arranged between the coupling element designed as a ball and the drive pinion.
  • the spring is arranged between turned parts.
  • a malfunction the spring is given when the spring is between a rotating part and a part is arranged rotatably with respect to the housing.
  • the friction force creates torsional loads that act on the spring and adversely affect the function.
  • the screwing device shown in FIGS. 1 and 2 has a housing 1 and a handle 11 Actuator switch 12, an adjustable depth stop 13 and one against the force a spring 4 axially displaceable spindle 5.
  • FIG. 2 shows, in the housing 1 there is a motor 2, a motor 2 driven Drive pinion 3, a coupling element 6 in the form of a ball and the axially displaceable Spindle 5 arranged. Between the ball and the drive pinion 3 is the spring 4 and a on the ball, arranged on the spindle 5, in the longitudinal direction of the spindle 5 limited displaceable ring 10 arranged.
  • the groove 8 On an outer peripheral surface of the spindle 5 there is a groove 8, the in Extent measured circumference exceeds the corresponding extent of the ball.
  • the groove 8 has an abutment surface pointing against the setting direction an edge 9 which is inclined to a plane perpendicular to the spindle axis runs.
  • the edge 9 runs inclined to the respective two peripheral ends of the Slot 8.
  • one of the grooves 8 is essentially opposite recess 7 arranged, which is inclined to the longitudinal extension of the spindle 5 runs.
  • the recess 7 has two approaching each other against the setting direction Stop edges 16 on.
  • the groove 8 and the recess 7 receive the ball and the groove 8 and / or the recess 7 of the drive pinion 3 are designed such that an axial and a circumferential movement of the spindle 5 relative to the drive pinion 3 by one predetermined axial distance (S) is possible.
  • the recess 7 has a radial direction constant depth.
  • the end face of the spindle 5 on the setting direction is included can be connected to a bit 14. Via the screw 15 attached to bit 14 the spindle 5 is pressed together by pressing the screwdriver against the underground U. moved with the ball against the spring 4. The ball gets into the recess 7 of the drive pinion 3, so that a non-rotatable, positive connection arises between the spindle 5 and the drive pinion 3. The spring 4 is now under tension. When the screwdriver is actuated, the spindle 5 is set in rotation.
  • the displacement of the ball in the groove 8 of the spindle 5 results in a displacement of the Spindle 5 with respect to the drive pinion in the circumferential direction and in the setting direction.
  • the screw 15 is screwed in while tracking the screwing device until the depth stop 13 rests on the underground U.
  • the spring 4 guides the spindle 5 until the screwing depth set via the depth stop 13 is reached and the ball no longer engages in the recess 7, so that the non-rotatable, positive Connection between the spindle 5 and the drive pinion 3 is interrupted.
  • the spring 4 moves one between the ball and the spring 4 arranged, on the spindle 5 axially displaceable ring 10 in the starting position.
  • the spring 4 sets the spindle 5 in the starting position.

Landscapes

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

Claims (7)

  1. Outil portatif, tel qu'outil de vissage, comprenant un boítier (1), un moteur (2) disposé dans le boítier (1), un pignon d'entraínement axialement fixe (3) entraíné par le moteur (2), une broche (5) montée dans le boítier (1) avec une possibilité de translation axiale à l'encontre de la force d'un ressort (4) par rapport au pignon d'entraínement (3), et un élément d'accouplement (6) entre le pignon d'entraínement (3) et la broche (5), l'élément d'accouplement (6) pouvant être accouplé dans le sens de rotation avec le pignon d'entraínement (3) par la translation axiale de la broche (5) dans une première direction axiale à l'encontre de la force du ressort (4) et pouvant effectuer par rapport à la broche (5) un déplacement axial limité et une rotation limitée, de façon qu'en cas de rotation du pignon d'entraínement (3) l'élément d'accouplement (6) accouplé au pignon d'entraínement (3) effectue une rotation limitée par rapport à la broche (5) à l'encontre de l'action d'une force de rappel, la rotation relative provoquant la translation axiale limitée de l'élément d'accouplement (6) dans la première direction axiale, caractérisé en ce que l'élément d'accouplement (6) est une bille qui coopère avec des surfaces de butée de la broche (5) et peut être mise en prise avec des surfaces de butée du pignon d'entraínement (3) par la translation axiale de la broche (5) dans la première direction axiale.
  2. Outil selon la revendication 1, caractérisé en ce que les surfaces de butée du pignon d'entraínement (3) sont formées par au moins un renfoncement (7) qui est parallèle à l'extension longitudinale de la broche (5) et qui est pratiqué dans une surface périphérique intérieure du pignon d'entraínement (3).
  3. Outil selon la revendication 1 ou 2, caractérisé en ce que les surfaces de butée de la broche (5) sont formées par une gorge (8) située sur une surface périphérique extérieure de la broche (5), au moins l'extension de la gorge (8) mesurée dans la direction circonférentielle excédant l'extension correspondante de la bille.
  4. Outil selon la revendication 3, caractérisé en ce que la surface de butée de la broche (5) orientée à l'opposé du sens d'enfoncement est formée par une arête (9) qui s'étend en biais jusqu'à un plan perpendiculaire à l'axe de la broche.
  5. Outil selon la revendication 4, caractérisé en ce que l'arête (9) est inclinée vers chacune des deux extrémités de la circonférence de la gorge (8) à l'opposé du sens d'enfoncement.
  6. Outil selon l'une des revendications 1 à 5, caractérisé en ce que le ressort (4) est disposé entre la bille et le pignon d'entraínement (3).
  7. Outil selon la revendication 6, caractérisé en ce qu'un anneau (10) monté sur la broche (5) avec une possibilité de translation limitée dans la direction longitudinale de la broche (5) est disposé entre la bille et le ressort (4).
EP96810361A 1995-07-26 1996-06-04 Dispositif de vissage Expired - Lifetime EP0755754B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19527193 1995-07-26
DE19527193A DE19527193A1 (de) 1995-07-26 1995-07-26 Schraubgerät

Publications (2)

Publication Number Publication Date
EP0755754A1 EP0755754A1 (fr) 1997-01-29
EP0755754B1 true EP0755754B1 (fr) 1998-11-11

Family

ID=7767768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810361A Expired - Lifetime EP0755754B1 (fr) 1995-07-26 1996-06-04 Dispositif de vissage

Country Status (6)

Country Link
US (1) US5709275A (fr)
EP (1) EP0755754B1 (fr)
JP (1) JP3984312B2 (fr)
KR (1) KR100384986B1 (fr)
CN (1) CN1055039C (fr)
DE (2) DE19527193A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982103B1 (fr) * 1998-08-28 2001-07-11 CEKA ELEKTROWERKZEUGE AG + Co.KG Dispositif de verrouillage automatique pour une broche
US6758116B2 (en) * 2001-06-28 2004-07-06 Porter-Cable/Delta Depth adjusting system for a screw gun
US6665923B2 (en) 2001-06-29 2003-12-23 Porter-Cable/Delta Clutch for a screw gun and utilizing method
US7047848B2 (en) * 2001-06-29 2006-05-23 Portar-Cable/Delta Manufacture of steel components for screw gun clutches
US8641715B2 (en) 2002-05-31 2014-02-04 Vidacare Corporation Manual intraosseous device
JP4938979B2 (ja) 2002-05-31 2012-05-23 ヴァイダケア、コーパレイシャン 骨髄にアクセスする装置および方法
US11337728B2 (en) 2002-05-31 2022-05-24 Teleflex Life Sciences Limited Powered drivers, intraosseous devices and methods to access bone marrow
US10973545B2 (en) 2002-05-31 2021-04-13 Teleflex Life Sciences Limited Powered drivers, intraosseous devices and methods to access bone marrow
US8668698B2 (en) 2002-05-31 2014-03-11 Vidacare Corporation Assembly for coupling powered driver with intraosseous device
US7811260B2 (en) 2002-05-31 2010-10-12 Vidacare Corporation Apparatus and method to inject fluids into bone marrow and other target sites
US9504477B2 (en) 2003-05-30 2016-11-29 Vidacare LLC Powered driver
CN104814768B (zh) 2006-09-12 2018-04-13 维达保健有限责任公司 医疗程序托盘及相关方法
US8944069B2 (en) 2006-09-12 2015-02-03 Vidacare Corporation Assemblies for coupling intraosseous (IO) devices to powered drivers
CN101683733B (zh) * 2008-09-28 2012-09-26 车王电子股份有限公司 电动工具的离合装置
CN102674179B (zh) * 2012-05-21 2015-04-15 安徽省宿州市龙华机械制造有限公司 一种无极绳绞车双速齿轮箱防行星轮架轴向窜动的装置
WO2015123660A1 (fr) * 2014-02-17 2015-08-20 Vidacare LLC Commande motorisée actionnée par une force sur un arbre de transmission et trousses, composants et procédés associés
TWI606898B (zh) * 2015-02-16 2017-12-01 優鋼機械股份有限公司 扭力起子
JP2019147223A (ja) * 2018-02-27 2019-09-05 株式会社マキタ スクリュードライバ
JP2019155533A (ja) * 2018-03-13 2019-09-19 株式会社マキタ ネジ締め工具
CN108466216B (zh) * 2018-03-28 2019-11-05 徐州鼎力模具有限公司 一种基于齿轮传动的具有校正功能的电动螺丝刀
CN108527226A (zh) * 2018-04-13 2018-09-14 宁波得晴电器科技有限公司 一种家电生产设备

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US2683511A (en) * 1949-09-28 1954-07-13 American Screw Co Torque thrust control device
DE2840140A1 (de) * 1978-09-15 1980-03-27 Schmid & Wezel Druckluftschrauber mit abschaltumgehung
DE3510605A1 (de) * 1985-03-23 1986-10-02 C. & E. Fein Gmbh & Co, 7000 Stuttgart Kupplung fuer kraftgetriebene schraubwerkzeuge
DE3818924A1 (de) * 1987-12-08 1989-06-29 Makita Electric Works Ltd Kraftgetriebenes schraubwerkzeug
US5156244A (en) * 1990-08-31 1992-10-20 The Aro Corporation Torque sensing automatic shut-off and reset clutch for screwdrivers, nutsetters and the like
US5054588A (en) * 1990-08-31 1991-10-08 The Aro Corporation Torque sensing automatic shut-off and reset clutch for screwdrivers, nutsetters and the like
JPH0825146B2 (ja) * 1990-09-19 1996-03-13 株式会社マキタ 電動スクリュードライバにおけるクラッチ装置
EP0532289A1 (fr) * 1991-09-10 1993-03-17 Mhh Engineering Co Ltd Moyens pour exercer un couple sur un moyen de serrage
US5372206A (en) * 1992-10-01 1994-12-13 Makita Corporation Tightening tool
CN2174300Y (zh) * 1993-09-02 1994-08-17 辛富荣 电动起子的离合器

Also Published As

Publication number Publication date
KR970005534A (ko) 1997-02-19
DE19527193A1 (de) 1997-01-30
DE59600801D1 (de) 1998-12-17
CN1055039C (zh) 2000-08-02
EP0755754A1 (fr) 1997-01-29
JP3984312B2 (ja) 2007-10-03
CN1148531A (zh) 1997-04-30
KR100384986B1 (ko) 2003-08-21
JPH0938870A (ja) 1997-02-10
US5709275A (en) 1998-01-20

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