EP1293300A3 - Torque wrench - Google Patents

Torque wrench Download PDF

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Publication number
EP1293300A3
EP1293300A3 EP02014587A EP02014587A EP1293300A3 EP 1293300 A3 EP1293300 A3 EP 1293300A3 EP 02014587 A EP02014587 A EP 02014587A EP 02014587 A EP02014587 A EP 02014587A EP 1293300 A3 EP1293300 A3 EP 1293300A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic fluid
torque wrench
tool holder
transmission element
actuating arm
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Withdrawn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
EP02014587A
Other languages
German (de)
French (fr)
Other versions
EP1293300A2 (en
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.)
Hazet Werk Hermann Zerver GmbH and Co KG
Original Assignee
Hazet Werk Hermann Zerver 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
Application filed by Hazet Werk Hermann Zerver GmbH and Co KG filed Critical Hazet Werk Hermann Zerver GmbH and Co KG
Publication of EP1293300A2 publication Critical patent/EP1293300A2/en
Publication of EP1293300A3 publication Critical patent/EP1293300A3/en
Withdrawn legal-status Critical Current

Links

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
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
    • 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

Abstract

Die Erfindung betrifft einen Drehmomentschlüssel mit einem Betätigungsarm (1), an dessen einem Ende ein Handgriff (2) und an dessen anderem Ende ein Lagerstück (7) fest angeordnet ist und in dem eine Werkzeugaufnahme (3) um eine quer zu dem Betätigungsarm (1) verlaufende Drehachse gelagert ist. Drehfest an dem Lagerstück (7) ist mindestens ein unter Vorspannkraft stehendes Übertragungselement (15) angeordnet, welches formschlüssig in einen über seinen Umfang abwechselnd Rücksprünge (12) und Vorsprünge (11) aufweisenden Kopplungskranz (10) der Werkzeugaufnahme (3) eingreift. Die Vorspannkraft wird durch eine gegen ein mit einer Hydraulikkammer (14, 18, 20, 21) eingeschlossenes Hydraulikfluid vorgespannte Feder erzeugt und durch das Hydraulikfluid auf das Übertragungselement (15) übertragen. Die Feder (26) ist über einen beweglichen Kolben (22) gegen das Hydraulikfluid vorgespannt.

Figure 00000001
The invention relates to a torque wrench with an actuating arm (1), at one end of which a handle (2) and at the other end of which a bearing piece (7) is fixed and in which a tool holder (3) is arranged transversely to the actuating arm (1 ) running axis of rotation is mounted. At least one transmission element (15) under pretensioning force is arranged on the bearing piece (7) in a rotationally fixed manner and engages in a form-fitting manner in a coupling ring (10) of the tool holder (3) which alternately has recesses (12) and projections (11). The prestressing force is generated by a spring biased against a hydraulic fluid enclosed with a hydraulic chamber (14, 18, 20, 21) and transmitted to the transmission element (15) by the hydraulic fluid. The spring (26) is biased against the hydraulic fluid via a movable piston (22).
Figure 00000001
EP02014587A 2001-08-29 2002-07-02 Torque wrench Withdrawn EP1293300A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20114265U 2001-08-29
DE20114265U DE20114265U1 (en) 2001-08-29 2001-08-29 Torque wrench

Publications (2)

Publication Number Publication Date
EP1293300A2 EP1293300A2 (en) 2003-03-19
EP1293300A3 true EP1293300A3 (en) 2004-12-01

Family

ID=7961082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02014587A Withdrawn EP1293300A3 (en) 2001-08-29 2002-07-02 Torque wrench

Country Status (2)

Country Link
EP (1) EP1293300A3 (en)
DE (1) DE20114265U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20119801U1 (en) 2001-12-06 2002-02-14 Hazet Werk Zerver Hermann Shaft for a torque wrench
CN100509296C (en) * 2005-12-02 2009-07-08 谢智庆 Double pivot-point torque spanner
CN105291024B (en) * 2015-11-04 2017-06-20 沈阳黎明航空发动机(集团)有限责任公司 One kind is tightened and force limiting device and its application method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB606391A (en) * 1945-01-22 1948-08-12 Herbert Edward Page Hydraulic torque wrench
GB783462A (en) * 1953-04-29 1957-09-25 Frederick Alfred Stout Hydraulic mechanism which yields to an applied force of predetermined magnitude and subsequently resets itself, and torque spanners comprising such mechanism
US3272036A (en) * 1964-10-30 1966-09-13 William E Van Hoose Torque limiting wrench
US3824880A (en) * 1972-07-05 1974-07-23 H Zerver Device for limiting a force to be conveyed by a lever effect
FR2584331A1 (en) * 1985-07-08 1987-01-09 Facom Tightening wrench with torque limitation
FR2642486A1 (en) * 1989-01-31 1990-08-03 Poclain Hydraulics Sa Hydrostatic rotary coupling

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB606391A (en) * 1945-01-22 1948-08-12 Herbert Edward Page Hydraulic torque wrench
GB783462A (en) * 1953-04-29 1957-09-25 Frederick Alfred Stout Hydraulic mechanism which yields to an applied force of predetermined magnitude and subsequently resets itself, and torque spanners comprising such mechanism
US3272036A (en) * 1964-10-30 1966-09-13 William E Van Hoose Torque limiting wrench
US3824880A (en) * 1972-07-05 1974-07-23 H Zerver Device for limiting a force to be conveyed by a lever effect
FR2584331A1 (en) * 1985-07-08 1987-01-09 Facom Tightening wrench with torque limitation
FR2642486A1 (en) * 1989-01-31 1990-08-03 Poclain Hydraulics Sa Hydrostatic rotary coupling

Also Published As

Publication number Publication date
EP1293300A2 (en) 2003-03-19
DE20114265U1 (en) 2001-11-15

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