EP0178252B1 - Motorisch betriebenes Schraubgerät - Google Patents

Motorisch betriebenes Schraubgerät Download PDF

Info

Publication number
EP0178252B1
EP0178252B1 EP85810344A EP85810344A EP0178252B1 EP 0178252 B1 EP0178252 B1 EP 0178252B1 EP 85810344 A EP85810344 A EP 85810344A EP 85810344 A EP85810344 A EP 85810344A EP 0178252 B1 EP0178252 B1 EP 0178252B1
Authority
EP
European Patent Office
Prior art keywords
stop
actuating sleeve
sleeve
bush
stop bush
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
Application number
EP85810344A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0178252A3 (en
EP0178252A2 (de
Inventor
Paul Duerr
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
Priority to AT85810344T priority Critical patent/ATE34529T1/de
Publication of EP0178252A2 publication Critical patent/EP0178252A2/de
Publication of EP0178252A3 publication Critical patent/EP0178252A3/de
Application granted granted Critical
Publication of EP0178252B1 publication Critical patent/EP0178252B1/de
Expired 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
    • B25B23/141—Mechanical overload release couplings
    • 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

Definitions

  • the invention relates to a motor-driven screwing device with an adjustable torque limiting clutch arranged between a drive unit and a drive spindle for the tool, an adjustable stop sleeve relative to the device housing, on which a spring element adjustable for adjusting the torque limiting clutch is supported, the stop sleeve axially opposite one of these by a screw connection adjustable depth stop carries, with which an actuating sleeve is rotatably and axially displaceably connected.
  • a well-known motorized screwdriver type 1410.1 in accordance with the BOSCH catalog EW-WEB 1/130 (2.84) H, has an adjustable torque limiting coupling as well as an adjustable depth stop.
  • the torque limiting clutch is adjusted by changing the preload applied by a spring element between a coupling part connected in a rotationally fixed manner to a drive spindle and an output part of a drive unit.
  • a stop bush serving as an abutment for the spring element is axially displaced relative to the device housing.
  • a first actuating sleeve connected to the stop bushing is provided for this adjustment process.
  • a second actuating sleeve is used to adjust the depth stop. This manually mediated rotary movement is transmitted to the depth stop, which is therefore axially displaceable relative to the stop bush due to a screw connection with the device part receiving it.
  • the invention has for its object to provide in a screwdriver of the type described for adjusting the torque limiting clutch and adjusting the depth stop an actuator characterized by simple structure and easy handling.
  • the actuating sleeve thus fulfills a double function, in that on the one hand the depth stop can be adjusted and on the other hand the torque limiting clutch can be adjusted. This allows a simple structure and considerably simplifies handling.
  • Suitable as a connecting element is, for example, a partially free-standing bolt which is held in position by the actuating sleeve and which engages in frontal locking openings of the stop bushing in order to achieve the rotational connection.
  • the latching openings can be provided directly or indirectly, for example, via a support ring on the stop bush.
  • latching elements for securing the actuating sleeve are provided on the actuating sleeve and on the stop bush both in the rotationally fixed position relative to the stop bush and in the position axially displaced relative to the stop bush.
  • locking elements allows the operator to clearly perceive the changeover of the actuating sleeve to the respective other position.
  • the locking elements prevent the position of the actuating sleeve from changing automatically, as might otherwise occur in the event of vibrations or other external influences.
  • the screwing device has a device housing, generally designated 1, with a handle 2 projecting sideways from it.
  • the power supply line is provided by a cable 3 opening into the handle 2.
  • the screwdriver is switched on or off via a trigger 4.
  • An actuating sleeve 5 is connected to the front of the device housing 1 and a depth stop, denoted overall by 6, is axially surmounted by the working end of a screw insert 7.
  • Figure 2 shows the stub of the drive shaft 8 of an engine.
  • An output part in the form of a gear 9 meshes with the end-side pinion 8a of the drive shaft 8 and is rotatably supported by a rotary bearing 11 on an axially subdivided drive spindle, generally designated 12.
  • the gear 9 is shouldered by a roller bearing 13.
  • the gear 9 has a spur toothing 9a.
  • the drive spindle 12 is secured against rotation by a spline toothing 14, and a disk-shaped coupling part 15 is slidably assigned. This has a corresponding counter toothing 15a.
  • the counter toothing 15a of the coupling part 15 is held in engagement with the end toothing 9a of the toothed wheel 9 by the force of a spring element which is formed by plate springs and is designated overall by 16.
  • the spring element 16 is supported by a further roller bearing 17 and a locking ring 18 which is in one stop socket 19 is stuck, towards the front.
  • the gear 9, the coupling part 15 and the spring element 16 together form a torque limiting clutch, designated overall by 21.
  • the rotary bearing of the rear section 22 of the drive spindle 12 is used by a ball bearing 23 which is axially immovably fixed on the section 22 between a support ring 24 and a shoulder 22a.
  • the stop bushing 19 is connected by a thread 25 to the device housing 1 by a sliding connection.
  • the stop bush 19 In a radial bore 19a, the stop bush 19 carries a locking ball 26, which snaps into place in a longitudinal groove 28 distributed over the inner surface of the device housing 1 by a compression spring 27. A rotation of the stop bush 19 can therefore only take place by overcoming this locking.
  • a scale ring 29 is pressed onto the stop bush 19.
  • a reading window 31 in the device housing 1 enables reading of the respectively set torque level.
  • the maximum and minimum setting of the torque is limited by a pin 32 seated in the stop bushing 19.
  • a rotary bearing 33 is provided for the front section 34 of the drive spindle 12. Furthermore, a sealing ring 35 is located in front of the rotary bearing 33.
  • a connecting ring 37 which is part of the depth stop 6, is in screw connection with the stop bush 19 via a further thread 36.
  • the actuating sleeve 5 which is made of plastic, carries a connecting element 38, which is firmly connected to it, in the form of a cast-in bolt.
  • the forward end region 38a of the connecting element 38 projects into an axial bore 37a of the connecting ring 37.
  • the opposite rear free end region 38b of the connecting element 38 engages in latching openings 19b of the stop bush 19, a plurality of which are arranged on a circular path on the end face.
  • the actuating sleeve 5 In this engagement position of the connecting element 38, the actuating sleeve 5 is held in a circumferential groove 19c of the stop bush 19 by the latching engagement of a bead 5a arranged on resilient fingers.
  • the screwing insert 7 is inserted in a rotationally locking manner into a receiving opening 39 of the drive spindle 12.
  • the front section 34 of the drive spindle 12 is displaced toward the rear section 22, so that the drive spindle 12 forms a rotationally locking unit through mutual engagement of dog gear rings 34a, 22b.
  • the torque introduced by the drive shaft 8 is thus transmitted to the drive spindle 12 via the torque limiting clutch 21 and from there to the screw insert 7.
  • the torque that can be transmitted by the torque limiting clutch 21 is set by changing the axial position of the stop bushing 19. For this purpose, this must be rotated, which is accomplished with the aid of the actuating sleeve 5.
  • FIG. 3 shows such an offset position and also illustrates the abutment of the bead 5a under pretension on a support flank 19d facing the front of the stop bush 19.
  • the actuating sleeve 5 is moved into the The functional position shown in FIG. 2 is therefore only possible after the support flank 19d has been passed over, for which purpose the operator has to apply a corresponding displacement force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Transmission Devices (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Valve Device For Special Equipments (AREA)
  • Vehicle Body Suspensions (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
EP85810344A 1984-09-03 1985-07-25 Motorisch betriebenes Schraubgerät Expired EP0178252B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810344T ATE34529T1 (de) 1984-09-03 1985-07-25 Motorisch betriebenes schraubgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843432382 DE3432382A1 (de) 1984-09-03 1984-09-03 Motorisch betriebenes schraubgeraet
DE3432382 1984-09-03

Publications (3)

Publication Number Publication Date
EP0178252A2 EP0178252A2 (de) 1986-04-16
EP0178252A3 EP0178252A3 (en) 1986-07-09
EP0178252B1 true EP0178252B1 (de) 1988-05-25

Family

ID=6244552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810344A Expired EP0178252B1 (de) 1984-09-03 1985-07-25 Motorisch betriebenes Schraubgerät

Country Status (12)

Country Link
US (1) US4630512A (it)
EP (1) EP0178252B1 (it)
JP (1) JPS6165785A (it)
AT (1) ATE34529T1 (it)
AU (1) AU573150B2 (it)
CA (1) CA1276818C (it)
DE (2) DE3432382A1 (it)
DK (1) DK156885C (it)
ES (1) ES8701007A1 (it)
FI (1) FI80397C (it)
NO (1) NO161544C (it)
YU (1) YU44568B (it)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510605A1 (de) * 1985-03-23 1986-10-02 C. & E. Fein Gmbh & Co, 7000 Stuttgart Kupplung fuer kraftgetriebene schraubwerkzeuge
US4809572A (en) * 1986-12-09 1989-03-07 Makita Electric Works, Ltd. Power driven screwdriver
DE3912790A1 (de) * 1989-04-19 1990-10-25 Metabowerke Kg Vorrichtung fuer den kuppelbaren antrieb einer schrauberspindel
DE3918227C1 (it) * 1989-06-03 1990-11-15 C. & E. Fein Gmbh & Co, 7000 Stuttgart, De
JPH0641811Y2 (ja) * 1989-12-01 1994-11-02 日立工機株式会社 スクリュドライバ
US5025903A (en) * 1990-01-09 1991-06-25 Black & Decker Inc. Dual mode rotary power tool with adjustable output torque
DE4123349C1 (de) * 1991-07-15 1993-03-04 Fein C & E Schrauber mit variabler Drehmomenteinstellung
JP3071523B2 (ja) * 1991-10-08 2000-07-31 株式会社マキタ スクリュードライバーにおける回り止め装置
JP3071563B2 (ja) * 1992-05-20 2000-07-31 株式会社マキタ スクリュードライバーにおけるクラッチ装置
US5372206A (en) * 1992-10-01 1994-12-13 Makita Corporation Tightening tool
US5380132A (en) * 1993-09-10 1995-01-10 Black & Decker Inc. Depth adjusting system for a power tool
US5689891A (en) * 1994-12-13 1997-11-25 Milwaukee Electric Tool Corp. Clutch mechanism for reciprocating saws
USRE37211E1 (en) 1994-12-13 2001-06-12 Milwaukee Electric Tool Corporation Clutch mechanism for reciprocating saws
US5566458A (en) * 1994-12-13 1996-10-22 Milwaukee Electric Tool Corporation Clutch mechanism for reciprocating saws
US5607023A (en) * 1994-12-13 1997-03-04 Milwaukee Electric Tool Corp. Impact absorption mechanism for power tools
US5538089A (en) * 1995-06-05 1996-07-23 The Black & Decker Corporation Power tool clutch assembly
US5601387A (en) * 1995-06-07 1997-02-11 Black & Decker Inc. Depth adjusting system for a power tool
US5690005A (en) * 1995-09-22 1997-11-25 General Electric Company Tool for remotely installing and torquing tie rod nut with limited vertical access
DE19809133B4 (de) * 1998-03-04 2012-07-19 Scintilla Ag Handwerkzeugmaschine, insbesondere Bohrschrauber
DE10103544A1 (de) * 2001-01-26 2002-08-01 Hilti Ag Schraubgerät
US6758116B2 (en) * 2001-06-28 2004-07-06 Porter-Cable/Delta Depth adjusting system for a screw gun
US7047848B2 (en) * 2001-06-29 2006-05-23 Portar-Cable/Delta Manufacture of steel components for screw gun clutches
US6665923B2 (en) 2001-06-29 2003-12-23 Porter-Cable/Delta Clutch for a screw gun and utilizing method
GB0210029D0 (en) * 2002-05-02 2002-06-12 Black & Decker Inc Detent mechanism
DE10360282A1 (de) * 2003-12-20 2005-07-14 Hilti Ag Handbohrschrauber mit geräuscharmer Drehmomentkupplung
TW200918249A (en) * 2007-10-19 2009-05-01 Chia-Chiung Chuang Mechanism for stabilizing output torque of transmission member
GB2568911B (en) * 2017-11-30 2021-08-11 Quantum Tuner Ltd Improved torque device for tuning drums

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670644A (en) * 1951-07-19 1954-03-02 Thor Power Tool Co Attachment for power-driven rotary tools
DE1254549B (de) * 1955-02-07 1967-11-16 Licentia Gmbh Elektrowerkzeug mit einer zum Loesen von Einsteckwerkzeugen axial verschiebbaren Muffe und einer Rutschkupplung mit Feder
US2796161A (en) * 1955-07-26 1957-06-18 Clinton L Graybill Hydraulically actuated attachment for power-driven tool chucks
US3454059A (en) * 1967-10-02 1969-07-08 Black & Decker Mfg Co Attaching and adjusting construction for depth locating accessory
US3527273A (en) * 1968-01-24 1970-09-08 Rockwell Mfg Co Adjustable means of limiting driving depth with attachable nosepiece
GB1208212A (en) * 1968-03-18 1970-10-07 Wolf Electric Tools Ltd Improvements relating to electric screwdrivers
US3834252A (en) * 1973-06-11 1974-09-10 Black & Decker Mfg Co Adjustable positive clutch screwdriver
SE377900B (it) * 1974-01-15 1975-08-04 Atlas Copco Ab
US3869942A (en) * 1974-02-04 1975-03-11 Textron Inc Driving tool
US3942337A (en) * 1974-09-16 1976-03-09 Industrial Analytics Inc. Torque limiting device
US3943800A (en) * 1975-02-18 1976-03-16 Chicago Pneumatic Tool Company Portable screw driving tool having screw depth control feature
DE3242862A1 (de) * 1982-11-19 1984-05-24 Hilti Ag, Schaan Handgeraet mit verstellbarem tiefenanschlag
DE3330962A1 (de) * 1983-08-27 1985-03-21 Eberhard Dipl.-Ing. Beyhl (FH), 8503 Altdorf Schraubbegrenzungsvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Typ 1410.7 entsprechend BOSCH Katalog EW-WEB 1/130 (2B4) H *

Also Published As

Publication number Publication date
ATE34529T1 (de) 1988-06-15
DK156885C (da) 1990-04-09
JPS6165785A (ja) 1986-04-04
NO161544B (no) 1989-05-22
FI80397C (fi) 1990-06-11
AU573150B2 (en) 1988-05-26
EP0178252A3 (en) 1986-07-09
NO161544C (no) 1989-08-30
YU44568B (en) 1990-10-31
DE3562872D1 (en) 1988-06-30
DE3432382A1 (de) 1986-03-13
DK399685A (da) 1986-03-04
DK399685D0 (da) 1985-09-02
NO853449L (no) 1986-03-04
YU130985A (en) 1988-06-30
AU4641185A (en) 1986-03-13
US4630512A (en) 1986-12-23
ES8701007A1 (es) 1986-11-16
EP0178252A2 (de) 1986-04-16
JPH0536194B2 (it) 1993-05-28
ES546682A0 (es) 1986-11-16
FI853353L (fi) 1986-03-04
FI80397B (fi) 1990-02-28
FI853353A0 (fi) 1985-09-02
DK156885B (da) 1989-10-16
CA1276818C (en) 1990-11-27

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