EP1920889A1 - Outil à chocs avec mécanisme pneumatique d'entraînement - Google Patents

Outil à chocs avec mécanisme pneumatique d'entraînement Download PDF

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Publication number
EP1920889A1
EP1920889A1 EP06023568A EP06023568A EP1920889A1 EP 1920889 A1 EP1920889 A1 EP 1920889A1 EP 06023568 A EP06023568 A EP 06023568A EP 06023568 A EP06023568 A EP 06023568A EP 1920889 A1 EP1920889 A1 EP 1920889A1
Authority
EP
European Patent Office
Prior art keywords
tool according
pulse tool
drive
shut
pulse
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.)
Granted
Application number
EP06023568A
Other languages
German (de)
English (en)
Other versions
EP1920889B1 (fr
Inventor
Konrad Karl Kettner
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.)
Apex Tool Group GmbH and Co OHG
Original Assignee
Cooper Power Tools GmbH and Co OHG
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 Cooper Power Tools GmbH and Co OHG filed Critical Cooper Power Tools GmbH and Co OHG
Priority to EP06023568A priority Critical patent/EP1920889B1/fr
Priority to AT06023568T priority patent/ATE446823T1/de
Priority to ES06023568T priority patent/ES2335911T3/es
Priority to DE502006005262T priority patent/DE502006005262D1/de
Priority to US11/939,334 priority patent/US7484569B2/en
Publication of EP1920889A1 publication Critical patent/EP1920889A1/fr
Application granted granted Critical
Publication of EP1920889B1 publication Critical patent/EP1920889B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • 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
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • B25B23/1453—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers for impact wrenches or screwdrivers

Definitions

  • the invention relates to a pulse tool, in particular a pulse wrench, with at least one pneumatic drive unit having a drive rotor, and with a pulse unit driven by this, wherein the drive unit is associated with a delay-dependent Trägheitsabschalt adopted to interrupt the air supply upon reaching a shutdown pulse.
  • Object of the present invention is to improve such a pulse tool to the effect that this has a compact design, low weight and at the same time a quick shutdown by the Trägheitsabschalt issued or allows.
  • the Trägheitsabschalt realized at least one for changing the air supply between the open and closed positions relative to the drive rotor displaceable shut-off piston and a rotatable by the drive rotor, in particular annular inertia body.
  • the shut-off is easy to move from the open to the closed position, wherein in the closed position, the air supply is completely or at least largely interrupted to the drive unit.
  • the inertia body is rotated accordingly by the drive rotor. As soon as an impulse is set, further rotation of the inertial body relative to the drive body may occur due to the corresponding inertia of the inertial body.
  • the inertia body has an inner contour, by means of which at least one drive body, which is adjustable essentially radially relative to the drive rotor, can be deflected.
  • Upon reaching the shutdown pulse and further rotation of the inertial body relative to the drive body is carried out according to the deflection of the drive body.
  • This is motion-connected with a movable between a release and a retaining position release device for the shut-off.
  • the release device is correspondingly arranged in the region between release and retention position. In the release position, a release of the shut-off piston, so that it is displaceable from its opening into the closed position.
  • the inner contour or inner circumference can be designed differently. As preferred, a substantially triangular and in particular equilateral inner circumference can be considered.
  • the corresponding triangular tips can have convexly curved inner sides.
  • this convex curvature correspond to the curvature of the drive body.
  • a drive body of each triangle tip can be assigned.
  • three drive bodies are moved in the form of spheres in accordance with reaching the turn-off in the direction of the body and adjust this to release the cut-off.
  • this can have a driving device for the drive body to the deflection radially outward. That is to say, during the rotation of the rotor extension, the driving bodies move through the entrainment device into the triangular tips and in this way take the inertia body with it so that it rotates corresponding to the rotor extension or to the rotor of the drive unit.
  • a simple realization of such entrainment means can be seen therein if it has at least radial openings and an abutment body arranged in a longitudinal bore of the radial extension.
  • the drive body are mounted radially adjustable and are prevented from falling into the corresponding longitudinal bore of the rotor extension by the plant body.
  • the body part of the release device is mounted adjustably in the longitudinal direction of the longitudinal bore. That that with radial adjustment of the drive body inwardly upon reaching the shutdown pulse, the drive body on the contact body to its adjustment in the longitudinal direction of the longitudinal bore press and so this allows as part of the release device an adjustment of the shutdown piston from its opening into its closed position.
  • the contact body can be pressurized in the direction of the drive body.
  • shut-off piston is pressurized in the direction of the closed position, in particular by means of a piston compression spring. This results in the advantage that upon release of the shut-off piston, this is pressed directly by its piston compression spring in the closed position, and in particular no entrainment of the shut-off must be done by, for example, the plant body or other parts of the release device.
  • the rotor extension may have at least one slot on the circumference, in each of which a locking body is slidably mounted, with one of the cutoff piston and from the other side slidable in the longitudinal bore mounted holding sleeve of the release device is in abutment.
  • This retaining sleeve can be moved by moving the contact body in the longitudinal direction of the longitudinal bore, whereby the locking body can move along the elongated hole and moves according to the shut-off piston from the opening to the closed position.
  • the shut-off piston can have on its inside a receiving groove for the blocking body.
  • the retaining sleeve can be pressurized within the longitudinal bore in the direction of locking body in particular by a compression spring.
  • a Abschalthggse may be disposed within the retaining sleeve and be in abutment with the plant body with a plant end.
  • Shut-off sleeve and retaining sleeve are connected to motion, so that at the same time a displacement of the retaining sleeve takes place during an adjustment of the shut-off sleeve by the contact body.
  • the pressurization of the retaining sleeve can simultaneously serve to pressurize the Abschaltthggse in the direction of contact body.
  • the locking body with an outer side of the retaining sleeve in abutment, whereby a falling into the lock body is prevented in the longitudinal bore.
  • the shutdown pulse can be adjusted, for example, by the bolt in the longitudinal bore to vary its pressurization is adjustable.
  • the shut-off piston can have a radially outwardly projecting closing flange. This is then in the closed position at corresponding air channels or the like within the pulse tool to the seal.
  • the inertial body is mounted floating.
  • the inertia body is essentially supported and also driven during its rotation by the set bolt compression spring force on the contact body pressed radially outward and rotated by the driving device together with the rotor extension drive body.
  • the housing of the pulse tool may have an insertion for an adjustment, which can be inserted through this and then through the longitudinal opening of the contact body into the Einsteckverianaung for rotating the bolt.
  • a frictional engagement element in the form of, for example, a spring, an elastomeric pin or the like.
  • the shut-off sleeve can be secured against rotation relative to the rotor extension as a reaction receptacle during rotation of the bolt via a spherical locking body.
  • Fig. 2 see also Fig. 4 is a longitudinal section in particular by the drive unit 2 and an associated delay-dependent Trägheitsabschalt Anlagen 5 shown.
  • the corresponding drive rotor 3 has, opposite to the pulse unit 4, a cylindrical rotor extension 14. These and also part of the drive rotor 3 are centered a longitudinal bore 24 in the longitudinal direction 25. Both the drive rotor 3 and the rotor extension 14 are rotatably supported via corresponding rotary bearings relative to the motor cylinder 55 or housing 45 of the pulse tool 1.
  • the threaded bolt 36 is disposed in a Abschaltthggse 34 and adjustable relative to this, with a thread between the two is usually formed.
  • a frictional engagement element 50 in the form of an elastomeric pin, a spring or the like is provided.
  • To prevent rotation of the Abschaltthggse is still at least one locking body 60 after Fig. 2 provided with the rotor extension as a reaction receptacle during rotation of the bolt 36th
  • the Abschelthülse 34 is with its free end 35 with the plant body 23 in Appendix, with a corresponding system between bolt 36 and contact body 23 is only present when the bolt 36 is unscrewed accordingly from the Abschaltthülse 34, wherein the axial end positions of the bolt 36 through Circlips 58, 59 after Fig. 2 are delimited on both sides of the internal thread of the Abschelthülse 34.
  • the shut-off sleeve 34 is at least partially inserted into a holding sleeve 29, which also extends in the longitudinal direction 25 and within the longitudinal bore 24.
  • the retaining sleeve 29 is with its free end 32 with at least one locking body 28 in ball shape in contact. At its other end, it is pressurized by a compression spring 33 in the direction of the plant body 23. This compression spring 33 is supported within the longitudinal bore 24 at a level and is supported approximately at the level of the collar bolt 40.
  • shut-off piston 8 In the area of blocking body 28 or slot 27, a shut-off piston 8 is arranged, which is mounted on the outside of the rotor extension 14 in the longitudinal direction 25 slidably.
  • This shut-off piston 8 has approximately centrally a radially outwardly projecting locking flange 41 which rests upon displacement of the shut-off piston 8 in the direction of the drive unit 2 on an air distributor plate 56 for interrupting the air supply to the drive unit 2.
  • the shut-off piston 8 On its inner side 30, the shut-off piston 8 has a receiving groove 31, in which the locking body 28 is partially received opposite to the shut-off sleeve 34.
  • a piston compression spring 26 is arranged for pressurizing the shut-off piston 8 in the direction of the drive unit 2. This has a spring constant less than the corresponding spring constant of the compression spring 33.
  • the contact body 23 is biased according to the pressurization by in particular the abutment end 35 of the Abschaltthülse 34 and its connection to the bolt 36 and its pressurization by bolt pressure spring 39 in the direction of contact body 49.
  • On its spherical or conical outer side are one, two, three or more spherical drive body 11 at. These are additionally supported by the outer surfaces of the contact body 23 in radial openings 22 of the rotor extension 14.
  • a driving device 21 is formed for these drive body 11, so that upon rotation of the drive rotor 3 and corresponding to the rotor extension 14, the drive body 11 are carried.
  • three drive body 11 are in use, see also Fig. 3 ,
  • the inertia body 9 extends annularly outside about the rotor extension 14 and is floatingly supported by the drive body 11 at the free end 15 of the rotor extension. Laterally, the drive body 11 are secured by stops 42, for example in the form of snap rings or the like. Laterally, the drive body are also secured by the radial openings 22 of the rotor extension.
  • One end of the rotor extension 14 is closed by a closure plate 57 having a central opening.
  • Fig. 3 is a section taken along the line III-III Fig. 2 essentially represented only by the Trägheitsabschalt Anlagen 5.
  • This has the annular inertia body 9 and arranged in this drive body 11 in spherical form.
  • An outer periphery 16 of the inertial body 9 is circular and inner circumference 17 and inner contour 10 are polygonal.
  • the inner contour 10 is formed triangular and in particular equilateral.
  • the corresponding triangle sides 18 are slightly convexly curved, as are corresponding triangular points 19, the curvature of which corresponds essentially to a corresponding external curvature of the drive body 11.
  • shut-off piston 8 In this so-called closed position of the shut-off piston 8 there is no rotation of the drive unit 2 and thus not the pulse unit 4.
  • the release button on the handle see Fig. 1 , is pressed by a worker, but is still the appropriate air pressure. Only when the worker lets go of the release button, no compressed air is applied and there is a provision of shut-off piston 8 and retaining sleeve 9 in particular due to the larger spring constant of the compression spring 39 in comparison to the piston compression spring 26th
  • shut-off piston 8 should be noted that this in the open position 7 after Fig. 2 or 4 is pressure-neutral and thus can not perform any movement in the closed position. This occurs only when the inertia cut-off device 5 operates accordingly, as described above. It should also be noted that the adjustment of the shut-off piston 8 must be done by the Trägheitsabschalt Anlagen 5 in the closed position only partially at a corresponding release by the release device 13, for example, a shift by 80 to 95 percent in the direction of the closed position may be sufficient. The final shutdown of the drive unit 2 can then take place due to the resulting pressure differences on the shut-off piston.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Air Bags (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP06023568A 2006-11-13 2006-11-13 Outil à chocs avec mécanisme pneumatique d'entraînement Active EP1920889B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06023568A EP1920889B1 (fr) 2006-11-13 2006-11-13 Outil à chocs avec mécanisme pneumatique d'entraînement
AT06023568T ATE446823T1 (de) 2006-11-13 2006-11-13 Impulswerkzeug mit pneumatischer antriebseinheit
ES06023568T ES2335911T3 (es) 2006-11-13 2006-11-13 Herramienta de impulso.
DE502006005262T DE502006005262D1 (de) 2006-11-13 2006-11-13 Impulswerkzeug mit pneumatischer Antriebseinheit
US11/939,334 US7484569B2 (en) 2006-11-13 2007-11-13 Pulse tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06023568A EP1920889B1 (fr) 2006-11-13 2006-11-13 Outil à chocs avec mécanisme pneumatique d'entraînement

Publications (2)

Publication Number Publication Date
EP1920889A1 true EP1920889A1 (fr) 2008-05-14
EP1920889B1 EP1920889B1 (fr) 2009-10-28

Family

ID=37909798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06023568A Active EP1920889B1 (fr) 2006-11-13 2006-11-13 Outil à chocs avec mécanisme pneumatique d'entraînement

Country Status (5)

Country Link
US (1) US7484569B2 (fr)
EP (1) EP1920889B1 (fr)
AT (1) ATE446823T1 (fr)
DE (1) DE502006005262D1 (fr)
ES (1) ES2335911T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2338690T3 (es) 2006-11-13 2010-05-11 COOPER POWER TOOLS GMBH & CO. Herramienta con mecanismo hidraulico de percusion.
ES2365404T3 (es) * 2006-11-13 2011-10-04 COOPER POWER TOOLS GMBH & CO. Herramienta de impulso y placa delantera correspondiente.
TWI401141B (zh) * 2010-12-09 2013-07-11 De Lun Huang 氣動工具機
TW201347928A (zh) * 2012-05-30 2013-12-01 Basso Ind Corp 具有保險裝置的氣動工具
JP7258886B2 (ja) * 2017-12-11 2023-04-17 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ 電気パルス工具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB772382A (en) * 1954-04-26 1957-04-10 Chicago Pneumatic Tool Co Rotary impact tool with inertia responsive torque control
US4359107A (en) * 1979-01-17 1982-11-16 Dresser Industries, Inc. Shut-off apparatus for pneumatic driven tools
DE9117166U1 (de) * 1991-01-22 1996-08-14 Atlas Copco Tools Ab, Stockholm Drehmomentimpulse abgebendes Motorwerkzeug
US20030226674A1 (en) 2002-05-09 2003-12-11 Putney Gordon A. Air auto shut-off

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727598A (en) * 1951-10-22 1955-12-20 Thor Power Tool Co Impact wrench torque control
US3477521A (en) * 1967-10-05 1969-11-11 Aro Corp Automatic power tool
US3643749A (en) * 1970-07-14 1972-02-22 Ingersoll Rand Co Signal inhibitor for impact wrench
US3930764A (en) * 1974-12-26 1976-01-06 Cooper Industries, Inc. Air tool overspeed shutoff device
US4418764A (en) * 1981-07-14 1983-12-06 Giken Kogyo Kabushiki Kaisha Fluid impulse torque tool
SE452208B (sv) * 1981-10-21 1987-11-16 Atlas Copco Ab Sekerhetsanordning mot overvarv vid en pneumatiskt driven rotationsslipmaskin
US5092410A (en) * 1990-03-29 1992-03-03 Chicago Pneumatic Tool Company Adjustable pressure dual piston impulse clutch
SE501155C2 (sv) * 1993-04-21 1994-11-28 Atlas Copco Tools Ab Impulsmutterdragare
US5531279A (en) * 1994-04-12 1996-07-02 Indresco Inc. Sensor impulse unit
US5544710A (en) * 1994-06-20 1996-08-13 Chicago Pneumatic Tool Company Pulse tool
US5573074A (en) * 1995-02-13 1996-11-12 Gpx Corp. Gear shifting power tool
JP3401544B2 (ja) * 1998-10-15 2003-04-28 不二空機株式会社 油圧式パルスレンチの締付制御装置
WO2000071303A2 (fr) * 1999-05-03 2000-11-30 The Stanley Works Cle a impulsions
US6863134B2 (en) * 2003-03-07 2005-03-08 Ingersoll-Rand Company Rotary tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB772382A (en) * 1954-04-26 1957-04-10 Chicago Pneumatic Tool Co Rotary impact tool with inertia responsive torque control
US4359107A (en) * 1979-01-17 1982-11-16 Dresser Industries, Inc. Shut-off apparatus for pneumatic driven tools
DE9117166U1 (de) * 1991-01-22 1996-08-14 Atlas Copco Tools Ab, Stockholm Drehmomentimpulse abgebendes Motorwerkzeug
US20030226674A1 (en) 2002-05-09 2003-12-11 Putney Gordon A. Air auto shut-off

Also Published As

Publication number Publication date
US7484569B2 (en) 2009-02-03
ES2335911T3 (es) 2010-04-06
ATE446823T1 (de) 2009-11-15
US20080110655A1 (en) 2008-05-15
DE502006005262D1 (de) 2009-12-10
EP1920889B1 (fr) 2009-10-28

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