EP0088926A2 - Dispositif de vissage débrayable avec tige de vissage déplaçable longitudinalement - Google Patents

Dispositif de vissage débrayable avec tige de vissage déplaçable longitudinalement Download PDF

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Publication number
EP0088926A2
EP0088926A2 EP83101910A EP83101910A EP0088926A2 EP 0088926 A2 EP0088926 A2 EP 0088926A2 EP 83101910 A EP83101910 A EP 83101910A EP 83101910 A EP83101910 A EP 83101910A EP 0088926 A2 EP0088926 A2 EP 0088926A2
Authority
EP
European Patent Office
Prior art keywords
screwdriver
handle
switching
clutch
shut
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Withdrawn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
EP83101910A
Other languages
German (de)
English (en)
Other versions
EP0088926A3 (fr
Inventor
Erich Borst
Brigitte Hertell
Fritz Dipl.-Ing. Schädlich
Heinz Walz
Steffen Ing.grad. Wünsch
Günter Ing. grad. Zilly
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 EP0088926A2 publication Critical patent/EP0088926A2/fr
Publication of EP0088926A3 publication Critical patent/EP0088926A3/fr
Withdrawn legal-status Critical Current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
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated 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 shut-off screwdriver according to the preamble of the main claim.
  • a shut-off screwdriver has already become known from DE-PS 1 678 656, in which, however, the area of application ends at about 25 Nn return torque for one-handed screwdriver operation. Impact wrenches with a high working noise are used for screwing with higher torques to be transmitted.
  • the known right-angle screwdrivers which are also suitable for the transmission of higher torques, are not suitable for the tried-and-tested combination of separating clutch and torque lock clutch because it is not possible with them to simply switch the separating clutch when the screwdriver is inserted by means of a longitudinal movement of the screwdriver spindle.
  • the shut-off screwdriver according to the invention with the characterizing features of the main claim has the advantage over that the proven combination of a separating clutch with a longitudinally movable screwdriver spindle and a torque lock-up clutch for switching off the drive connection from the screwdriver motor to the screwdriver spindle can also be used for angle screwdrivers and thus the use of low-noise switch-off screwdrivers even when required To enable transmission of larger tightening torques.
  • this combination also enables one-handed operation with this shut-off angle screwdriver.
  • a motor housing 1, a gear housing 2, an angle head housing 3 and a handle housing 4 are connected to form an overall housing for a shut-off angle screwdriver.
  • the motor housing 1 accommodates an electric motor 5.
  • the motor shaft, not shown here, drives a countershaft 6, which is in a bearing plate 7 in the transmission housing 2 is stored.
  • the end of the countershaft 6 is shaped as a pinion 8.
  • This pinion 8 meshes with a gear 9.
  • the gear 9 is carried by a selector shaft 10, which is also mounted parallel to the countershaft 6 in the end shield 7.
  • the gear 9 is held on the selector shaft 10 both rotatably and slidably.
  • the gear housing 2 forms a bearing 13 for a threaded sleeve 14.
  • the threaded sleeve 14 in turn receives a screw spindle 15.
  • the screw spindle 15 is aligned with the control shaft 10.
  • the workpiece-side end of the control shaft 10 engages in a bore 16 in the end of the screw spindle 15 facing it.
  • At the bottom of the bore 16 is a ball 17 under the action of a coil spring 18. This coil spring 18 is guided in a bore 19 in the selector shaft 10.
  • a radial bore 22 leads from the casing of the selector shaft 10 to the inner end of the bore 19 and receives a smaller ball 23.
  • the ball 20 always tries to push the smaller ball 23 supported on it under the action of the coil spring 18 outwards or to hold it there.
  • the stop pin 21 prevents the smaller ball 23 from falling into the bore 19 during assembly.
  • the workpiece-side end face of the gear 9 has a free rotation 24, which extends the bearing bore of the gear 9.
  • Coupling teeth 25 also protrude from this end face.
  • the clutch teeth 25 are placed opposite clutch teeth 26, which has a clutch sleeve 27.
  • the coupling sleeve 27 engages over a collar of the threaded sleeve 14 and is screwed to it by a thread 28.
  • the coupling sleeve 27 also overlaps the hand-side end of the screw spindle 15, which forms a collar 29 there.
  • the collar 29 has teeth 30 of a torque lock clutch 31 on the end face.
  • a cup-shaped bottom 32 of the coupling sleeve 27 has radial receiving bores for cylindrical rollers 33.
  • the end faces of the teeth 30 rest against these cylindrical rollers 33 under the action of a coil spring 34.
  • the coil spring 34 finds its abutment on a support ring 35 which bears against the threaded sleeve 14. Its contact surface is chamfered on the outside.
  • the cone 36 thus formed presses a ball 37 into a longitudinal groove 38 in the coupling sleeve 27.
  • a hole 39 in the wall of the coupling sleeve 27 is assigned to a fixed bolt 40.
  • the locking pin 40 is guided in a radial bore in the gear housing 2. Both the threaded sleeve 14 and the screw spindle 15 protrude from the gear housing 2 into the angle head housing 3.
  • the end of the threaded sleeve 14 has teeth 41.
  • the gear housing 2 and the angular head housing 3 are connected by means of a threaded sleeve 42 and a snap ring 43. Teeth 44 on the end face of the angular head housing 3, which faces the gear housing 2, and a pin 45 in the gear housing 2 Locking means. With their help, the angle head housing 3 can be locked relative to the gear housing 2 in various rotational positions about the longitudinal axis of the switch-off angle screwdriver.
  • the workpiece-side end of the screw spindle 15 forms part of a longitudinally movable coupling 46. The counterpart to this is in a bevel gear 47 which is supported in ball bearings 48 in the angular head housing 3.
  • the screw spindle 15 carries a driving disk 49 which is mounted on the screw spindle 15 by means of a ball bearing 50.
  • the driving disk 49 or its ball bearing 50 rest against a step of the screw spindle 15.
  • the driving plate 49 receives a driving head 51, which is attached to the end of a wire rope core 52 of a Bowden cable 53.
  • the cable sleeve of this Bowden cable 53 is designated 54.
  • the hand-side end of the wire rope core 52 passes through a bore 55 in a handle 56. Its end protruding from this bore 55 is closed off by a ball 57.
  • the ball 57 thus serves as a driver for the wire rope core 52 when the handle 56 is moved.
  • the handle 56 is pivotally mounted about an axis 58 which is fastened in the handle housing 4.
  • the same axis 58 also serves a switching handle 59 as a pivot bearing.
  • the switching handle 59 is an operating handle for a switch 60 with which the electric motor 5 can be switched on and off.
  • the shift linkage 61 protruding from this switch 60 is connected to the shifting handle 59 by means of a pin 62.
  • a Compression spring 63 always urges the handle 56 in the rest position.
  • the switching handle 59 is urged by a spring, not shown, within the housing of the switch 60 in the switch-off position.
  • the switching handle 59 is guided in an outbreak 64 in the handle 56.
  • the transition that can be carried out by the switching handle 59 relative to the handle 56 is greater than the switching path for switching on the electric motor 5.
  • a connecting cable is designated by 65.
  • the bevel gear 47 in the angular head housing 3 is in engagement with a bevel gear 66.
  • This is mounted directly in a ball bearing 67 in the angular head housing 3.
  • the pin of a key bolt 68 is pressed into the axle bore of the bevel gear 66.
  • This key bolt 68 is supported again on the angle head housing 3 by means of a slide bearing 69 and has a conventional hexagon hole 70 with a ball catch 71 as a tool holder.
  • a corresponding nut is inserted into the hexagon hole 70.
  • the nut is placed as a key on the slightly screwed-in hexagon screw, the electric motor 5 is switched on by pressing the switching handle 59 and the gear 9 is thus driven.
  • the handle 56 is then actuated and the screw spindle 15 is pulled into the engaged position of the clutch teeth 25 and 26 via the Bowden cable 53.
  • the drive movement of the electric motor 5 is transmitted to the screw spindle 15 via the coupling sleeve 27 and the torque lock coupling 31. This in turn drives the key bolt 68 and thus ultimately the screw via the bevel gears 47 and 66.
  • the screw spindle 15 initially returns to its starting position.
  • the electric motor 5 is then switched off.
  • the screw spindle 15 returns to its initial position, the coil spring 18 relaxes to such an extent that its force is insufficient to hold the smaller ball 23 in its locked position against the action of the coil spring 11 acting on the gear 9.
  • the gear 9 returning to its stop position on the snap ring 12 presses the smaller ball 23 into its radial bore 22 in the selector shaft 10.
  • the initial state of the screwdriver is now established. A new screwing cycle can begin.
  • the threaded sleeve 42 is adjusted by means of a special key via the teeth 41 so that changes the tension of the coil spring 34 in the desired manner.
  • the pressure of the cone 36 on the ball 37 in the longitudinal groove 38 prevents the threaded sleeve 14 from being inadvertently adjusted.
  • a differently designed handle 72 is used instead of the handle 56, with which a larger stroke can be transmitted to the wire rope core 52 of the Bowden cable 53.
  • the Bowden cable 53 has been moved to another location in the overall housing.
  • the helical spring 74 thus acts as a buffer member between the longitudinal movement of the wire rope core 52 and the screw spindle 15.
  • a threaded sleeve 75 is used instead of the threaded sleeve 42. It also interacts with the snap ring 43.
  • a coupling sleeve 76 modified in relation to the coupling sleeve 27 itself has teeth 77.
  • a nut 78 is screwed into an internal thread of this coupling sleeve 76 and now supports the helical spring 34 via a support ring 79.
  • the nut 78 is connected to a socket 81 via spline teeth 80.
  • the bushing 81 is supported on the screw spindle 15 and rests on a locking ring 82 which is connected to the screw spindle 15.
  • a radial bore 83 in a collar of the bushing 81 is intended for receiving a pin of a known chuck key. Through an opening 84 in the slightly modified This drill chuck key (indicated by dash-dotted lines in FIG.
  • a lever mechanism is used instead of the Bowden cable 53 to engage the separating clutch 25/26 via the screw spindle 15.
  • a handle 85 is pivotally mounted on the angle head housing 3. It overlaps a double lever 86 which is supported on a bolt 87 in an opening 88 in the wall of the angle head housing 3.
  • a lever arm 89 of this double lever 86 rests on the inside of the handle 85.
  • the other lever arm is designed at its end as a fork 90 with which it engages around the screw spindle 15. Two cams 91 on this fork 90 rest on a disk 92. Between the shoulder of the screw spindle 15 and the washer 92, the coil spring 74 is clamped as a buffer.
  • the electric motor for the screwdriver must be switched on via a separate switch. Otherwise, the mode of operation is the same as that described for FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP83101910A 1982-03-15 1983-02-26 Dispositif de vissage débrayable avec tige de vissage déplaçable longitudinalement Withdrawn EP0088926A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3209395 1982-03-15
DE19823209395 DE3209395A1 (de) 1982-03-15 1982-03-15 Abschaltschrauber mit einer laengsverschiebbaren schrauberspindel

Publications (2)

Publication Number Publication Date
EP0088926A2 true EP0088926A2 (fr) 1983-09-21
EP0088926A3 EP0088926A3 (fr) 1985-05-29

Family

ID=6158306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101910A Withdrawn EP0088926A3 (fr) 1982-03-15 1983-02-26 Dispositif de vissage débrayable avec tige de vissage déplaçable longitudinalement

Country Status (4)

Country Link
US (1) US4458565A (fr)
EP (1) EP0088926A3 (fr)
JP (1) JPS58165969A (fr)
DE (1) DE3209395A1 (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59192465A (ja) * 1983-04-13 1984-10-31 前田金属工業株式会社 動力回転工具
JPS61117031A (ja) * 1984-11-14 1986-06-04 Nitto Seiko Co Ltd 締結トルクの制御装置
US4712456A (en) * 1986-07-02 1987-12-15 Top Driver Enterprise Co., Ltd. Electric torsion-controlled screwdriver with an improved automatic turn-off device
DE3919648C2 (de) * 1989-06-16 1998-01-29 Bosch Gmbh Robert Winkelschrauber
US4913242A (en) * 1989-08-07 1990-04-03 Top Driver Enterprise Co., Ltd. Electric screw driver
US5044234A (en) * 1990-03-13 1991-09-03 Cheng Chuan Yi Electrical screwdriver
JP2721768B2 (ja) * 1992-03-12 1998-03-04 リョービ株式会社 バッテリー式スクリュードライバー
DE9210140U1 (fr) * 1992-07-29 1992-10-08 Fa. Andreas Stihl, 7050 Waiblingen, De
JPH0731277U (ja) * 1993-11-11 1995-06-13 前田金属工業株式会社 ナット締付機
SE503326C2 (sv) * 1994-07-08 1996-05-28 Atlas Copco Tools Ab Vinkelmutterdragare
US6491112B1 (en) * 1999-11-19 2002-12-10 Donguen Electronics Co., Ltd. Driving tool for fastening fasteners
US6244358B1 (en) 2000-01-13 2001-06-12 Snap-On Technologies, Inc. Trigger and clutch arrangement for power tools
US6523442B2 (en) * 2000-12-07 2003-02-25 Acradyne Inc. Torque tool assembly
US6738685B2 (en) 2001-12-18 2004-05-18 The Stanley Works Hand-held type electrically powered fastener tool with on-board controller
GB2414950B (en) * 2004-06-12 2006-06-21 Mobiletron Electronics Co Ltd Elbow-type power hand tool
DE102005021731A1 (de) * 2005-05-11 2006-11-16 Robert Bosch Gmbh Elektrowerkzeugmaschine
US20070084310A1 (en) * 2005-10-14 2007-04-19 Sp Air Kabushiki Kaisha Air ratchet tool with rotatable head
US8480453B2 (en) * 2005-10-14 2013-07-09 Sp Air Kabushiki Kaisha Die grinder with rotatable head
JP5755988B2 (ja) * 2011-09-30 2015-07-29 株式会社マキタ 電動工具
TW201338926A (zh) * 2012-03-16 2013-10-01 Basso Ind Corp 具有切換裝置的棘輪扳手
TW201347928A (zh) * 2012-05-30 2013-12-01 Basso Ind Corp 具有保險裝置的氣動工具
JP2016055376A (ja) * 2014-09-09 2016-04-21 パナソニックＩｐマネジメント株式会社 電動工具
US10756482B2 (en) 2016-09-20 2020-08-25 Itt Manufacturing Enterprises Llc Torque-limiting couplings
CN108188967B (zh) * 2018-03-28 2019-11-15 蔡会多 一种具有自动校正功能的电动螺丝刀
CN110315458A (zh) * 2019-07-24 2019-10-11 魏磊 一种扳手
CN111843903B (zh) * 2020-07-29 2021-12-14 大连交通大学 一种定力矩螺栓套筒的结构及设计方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB649317A (en) * 1948-10-12 1951-01-24 Keith Henry Tomlinson Improvements in or relating to wrenches, spanners and like gripping tools for effecting rotation of a workpiece
DE1159867B (de) * 1959-06-20 1963-12-19 Fein C & E Schlagschrauber mit drehmomentabhaengiger Abschaltung des insbesondere elektromotorischen Antriebs
US3263785A (en) * 1964-07-31 1966-08-02 Ingersoll Rand Co Torque releasing clutch mechanism and motor control
DE1678656A1 (de) * 1965-07-08 1970-08-06 Bosch Gmbh Robert Elektrische Handwerkzeugmaschinen mit UEberlastkupplung
FR2083137A5 (fr) * 1970-12-22 1971-12-10 Desoutter Brothers Ltd
FR2163236A5 (fr) * 1972-02-21 1973-07-20 Bosch
FR2304447A1 (fr) * 1975-03-18 1976-10-15 Atlas Copco Ab Cle mecanique munie d'un embrayage pour faire cesser la transmission d'un couple

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056964A (en) * 1960-03-31 1962-10-09 Spotnails Pneumatically operated fastener driving machine
GB1498968A (en) * 1974-12-19 1978-01-25 Bosch Gmbh Robert Rotary power tool such as a power wrench
DE2505393C2 (de) * 1975-02-08 1983-09-15 Robert Bosch Gmbh, 7000 Stuttgart Kraftwerkzeug, insbesondere Kraftschrauber
US4078618A (en) * 1976-03-15 1978-03-14 Gardner-Denver Company Torque controller shutoff mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB649317A (en) * 1948-10-12 1951-01-24 Keith Henry Tomlinson Improvements in or relating to wrenches, spanners and like gripping tools for effecting rotation of a workpiece
DE1159867B (de) * 1959-06-20 1963-12-19 Fein C & E Schlagschrauber mit drehmomentabhaengiger Abschaltung des insbesondere elektromotorischen Antriebs
US3263785A (en) * 1964-07-31 1966-08-02 Ingersoll Rand Co Torque releasing clutch mechanism and motor control
DE1678656A1 (de) * 1965-07-08 1970-08-06 Bosch Gmbh Robert Elektrische Handwerkzeugmaschinen mit UEberlastkupplung
FR2083137A5 (fr) * 1970-12-22 1971-12-10 Desoutter Brothers Ltd
FR2163236A5 (fr) * 1972-02-21 1973-07-20 Bosch
FR2304447A1 (fr) * 1975-03-18 1976-10-15 Atlas Copco Ab Cle mecanique munie d'un embrayage pour faire cesser la transmission d'un couple

Also Published As

Publication number Publication date
DE3209395A1 (de) 1983-09-22
JPS58165969A (ja) 1983-10-01
EP0088926A3 (fr) 1985-05-29
US4458565A (en) 1984-07-10

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

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Effective date: 19870903

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HERTELL, BRIGITTE

Inventor name: SCHAEDLICH, FRITZ, DIPL.-ING.

Inventor name: ZILLY, GUENTER, ING. GRAD.

Inventor name: BORST, ERICH

Inventor name: WUENSCH, STEFFEN, ING.GRAD.

Inventor name: WALZ, HEINZ