EP0697268A1 - Dispositif de verrouillage reversible pour une poignée de réglage tournable - Google Patents

Dispositif de verrouillage reversible pour une poignée de réglage tournable Download PDF

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Publication number
EP0697268A1
EP0697268A1 EP95110260A EP95110260A EP0697268A1 EP 0697268 A1 EP0697268 A1 EP 0697268A1 EP 95110260 A EP95110260 A EP 95110260A EP 95110260 A EP95110260 A EP 95110260A EP 0697268 A1 EP0697268 A1 EP 0697268A1
Authority
EP
European Patent Office
Prior art keywords
handle
tube
rotating ring
sleeve
locking
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
EP95110260A
Other languages
German (de)
English (en)
Other versions
EP0697268B1 (fr
Inventor
Gerd Fierus
Udo Fierus
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 EP0697268A1 publication Critical patent/EP0697268A1/fr
Application granted granted Critical
Publication of EP0697268B1 publication Critical patent/EP0697268B1/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
    • B25B23/14—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

Definitions

  • the invention relates to a device for releasably fixing a handle that can be rotated for adjustment purposes, preferably a torque wrench, on a tube with a circular cylindrical outer surface, wherein at least one locking piece that is adjustable in the radial direction to the tube between a release position and a locking position is arranged in the locking position engages in depressions in the outer surface of the tube.
  • the respective release torque is set by adjusting a compression spring by turning the handle connected to a threaded spindle relative to the housing of the torque wrench.
  • the housing is usually formed by a tube which is circular in diameter and carries the square drive at the front end and the handle at the rear end.
  • the handle is fixed in the use position on the tubular housing. This is done, for example, by means of a clamping screw which presses radially on the housing tube, but does not achieve a reliable fixing because of the circular cylindrical surface of the tube.
  • Devices for releasably fixing a handle that can be rotated for adjustment purposes are not only required for torque wrenches, but also for other hand tools, for example grip pliers.
  • the invention has for its object to provide a device for releasably fixing a handle that can be rotated for adjustment purposes on a tube with a cylindrical cylindrical surface, which allows an almost infinitely variable and reliable fixing with simple handling with little technical effort and thus inexpensive.
  • the locking piece is designed as a U-shaped claw, which engages with the front edges of their legs in the secantial direction in axially extending recesses in the lateral surface of the tube and which by at one on the Handle trained twisting ring trained, curved control surfaces between its release position and its locking position is adjustable.
  • a releasable fixing of the rotatable handle on the circular cylindrical outer surface of the tube can be achieved in a very simple manner, with the quasi-stepless fixing and thus setting of the handle being possible through the formation of the immediately successive depressions in the circumferential direction.
  • the handle is formed at one end with a circular cylindrical bearing surface for the rotating ring, which is held in the axial direction by a sleeve which can be fixed on the handle.
  • this sleeve is fixed axially and circumferentially on the handle via at least one resilient tongue arranged on the handle, which engages with a pin from the inside in a pin opening of the sleeve.
  • the sleeve can be provided with a scale.
  • the invention proposes to manufacture the handle with the bearing surface for the rotating ring and preferably with two resilient tongues for holding the sleeve in one piece from plastic.
  • At least two opposing claws are arranged in the handle according to a further feature of the invention. According to a further feature of the invention, these are each loaded in the direction of their release position by a return spring in order to ensure a safe return from the locking position.
  • the rotating ring is mounted on the handle so that it can be rotated to a limited extent, the angle of rotation of the rotating ring preferably being limited by stops on the rotating ring and / or on the handle.
  • the invention proposes to hold the rotating ring detachably in the respective end position by a detent spring.
  • the invention results in a structurally simple and therefore inexpensive to manufacture device for releasably fixing a handle that can be rotated almost infinitely for adjustment purposes on a tube with a circular cylindrical surface, which ensures a functionally reliable fixing in any position.
  • the handle 1 shown in the exemplary embodiment as a torque wrench handle is rotatably mounted on the rear end of a tube 2 serving as a shaft of the torque wrench with a circular cylindrical outer surface.
  • the handle 1 is used to set the respective trigger torque of the torque wrench, not shown. This adjustment of the trigger torque is carried out by a threaded rod 3, which is adjustable in the rear end of the handle 1, but is non-rotatably connected to the handle 1.
  • this connection is made with the aid of an adjusting element 4, which is injected into the handle 1, which is made of plastic in the exemplary embodiment, and is therefore non-rotatably connected to it.
  • Loose coupling pieces 5 are arranged in this adjusting element 4, which cooperate via an end toothing with the end toothing of a clutch disc 6, which in turn is arranged non-rotatably on a polygonal section 3a of the threaded rod 3 and is held by a fixing nut 7.
  • the adjustment element 4 is arranged on the threaded rod 3 by means of a threaded sleeve 8, which is supported on a base plate 9 arranged on the threaded rod 3 and serves for the basic setting of the torque wrench.
  • the torque wrench can be adjusted with the components described above. Access to the components is then blocked by a cap 10 closing the rear end of the handle.
  • a sleeve 12 is provided which is held non-rotatably on the handle 1, with the aid of resilient tongues 1b which, in the exemplary embodiment, form one piece with the front end of the bearing surface 1a Extension of the handle 1 are formed.
  • Each tongue 1b is provided with a radially outwardly pointing pin 1c which engages from the inside in a pin opening of the sleeve 12 and in this way fixes this sleeve 12 both in the axial direction and in the circumferential direction on the handle 1 in such a way that the rotating ring 11 can rotate between sleeve 12 and handle 1.
  • locking pieces are arranged in the handle, each of which is designed as a U-shaped claw 13 in the exemplary embodiment.
  • Each of these claws 13 is loaded by a return spring 14 acting radially outwards.
  • a detent spring 15 is also arranged in the rotating ring 11, the effect of which will be described below.
  • each claw 13 with a cross-section U-shaped with its legs 13a engages in the handle 1, so that the end edges of the legs 13a with the circular cylindrical surface of the tube 2 in Can come into contact, which is provided in the area of the claws 13 with depressions 2a.
  • These depressions 2a are in the embodiment as in the longitudinal direction of the Tube 2 extending grooves created by knurling, which have a very small distance from each other in the circumferential direction, so that they enable an almost infinitely variable fixing of the rotatable handle 1 on the tube 2.
  • the rotating ring 11 In order to adjust the claws 13 in the radial direction between a release position according to FIG. 3b and a locking position according to FIG. 3a, the rotating ring 11 interacts with the web 13b of the respective claw 13 via curved control surfaces 11a and 11b. If the rotating ring 11 is in the locking position shown in FIG. 3a, the control surfaces 11a press the claws 13 with the edges of their legs 13a into the depressions 2a of the tube 2. In this position the handle 1 is fixed on the tube 2 in a non-rotatable manner.
  • the rotating ring 11 is rotated counterclockwise from the locking position shown in FIG. 3a into the released position shown in FIG. 3b, the webs 13b of the claws 13 reach the area of the control surfaces 11b of the rotating ring 11. In the area of these control surfaces 11b, the claws can 13 perform a radially outward release movement, which is caused by the return springs 14. In this release position, the end edges of the legs 13a are at a distance from the cylindrical surface of the tube 2, so that the handle 1 can be rotated on the tube 2.
  • stops 11c are provided on the rotating ring 11, which cooperate with stops 1d on the handle 1 and limit the angle of rotation to approximately 90 °, as can be seen from FIGS. 2a and 2b.
  • the catch spring 15 arranged between the stops 11c on the rotating ring 11 engages in catch recesses 1e which are formed on the handle 1. In this way it is ensured that not only the respective end position is non-positively secured, but that the user of the handle is informed by an acoustic signal that the rotating ring 11 is in the desired end position.
  • the claws 13 are transferred between the locking position and the release position in a particularly simple manner by turning the rotating ring 11, which, with its large-area control surfaces 11a and 11b, reliably controls the movement of the claws 13 in the radial direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP95110260A 1994-08-16 1995-07-01 Dispositif de verrouillage reversible pour une poignée de réglage tournable Expired - Lifetime EP0697268B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4428972A DE4428972C1 (de) 1994-08-16 1994-08-16 Vorrichtung zur lösbaren Festlegung eines zu Verstellzwecken verdrehbaren Handgriffes
DE4428972 1994-08-16

Publications (2)

Publication Number Publication Date
EP0697268A1 true EP0697268A1 (fr) 1996-02-21
EP0697268B1 EP0697268B1 (fr) 1998-09-09

Family

ID=6525777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110260A Expired - Lifetime EP0697268B1 (fr) 1994-08-16 1995-07-01 Dispositif de verrouillage reversible pour une poignée de réglage tournable

Country Status (3)

Country Link
EP (1) EP0697268B1 (fr)
DE (2) DE4428972C1 (fr)
ES (1) ES2122403T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3441189A1 (fr) * 2017-08-08 2019-02-13 Matatakitoyo Tool Co., Ltd. Appareils de réglage de couple

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20119801U1 (de) 2001-12-06 2002-02-14 Hazet-Werk Hermann Zerver GmbH & Co. KG, 42857 Remscheid Schaft für einen Drehmomentschlüssel
DE20217496U1 (de) 2002-11-13 2003-02-06 Felo-Werkzeugfabrik Holland-Letz GmbH, 35279 Neustadt Einrichtung zur Winkeleinstellung eines Griffes
CN103372837A (zh) * 2012-04-19 2013-10-30 天纳克-埃贝赫（大连）排气系统有限公司 一种消除扭矩误差的扳手
CN103921243A (zh) * 2014-04-24 2014-07-16 周维保 可更换扳头的手摇扳手
CN105459004B (zh) * 2014-09-11 2017-07-04 瞬丰实业有限公司 扭矩调节装置及一种具有此扭矩调节装置的工具
PL2998071T3 (pl) * 2014-09-18 2019-07-31 Matatakitoyo Tool Co., Ltd. Klucz z blokowalnym mechanizmem ustawiającym moment obrotowy

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704472A (en) * 1955-03-22 Mined torque release means
US3016773A (en) * 1958-12-12 1962-01-16 Woods Robert Glen Predetermined torque release wrench
US3270594A (en) * 1964-07-29 1966-09-06 Torque Controls Inc Predetermined torque release wrench
EP0274576A2 (fr) * 1987-01-16 1988-07-20 Consolidated Devices, Inc. Poignée pour clés à écrous
WO1994005463A1 (fr) 1992-08-31 1994-03-17 Sandvik Ab Dispositif de serrage a ressort verrouillable

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768547A (en) * 1954-04-28 1956-10-30 Printing Machinery Company Predetermined torque release hand tool
DE3143080C2 (de) * 1981-10-30 1983-09-29 Fa. Carl Freudenberg, 6940 Weinheim Stielbefestigung, insbes. für Besen
DE3518661C2 (de) * 1985-05-24 1994-04-28 Hans Mesenhoeller Schraubenschlüssel
DE9208547U1 (de) * 1992-06-25 1992-09-03 Lou, Lie-Whu, Taichung Schraubenzieher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704472A (en) * 1955-03-22 Mined torque release means
US3016773A (en) * 1958-12-12 1962-01-16 Woods Robert Glen Predetermined torque release wrench
US3270594A (en) * 1964-07-29 1966-09-06 Torque Controls Inc Predetermined torque release wrench
EP0274576A2 (fr) * 1987-01-16 1988-07-20 Consolidated Devices, Inc. Poignée pour clés à écrous
WO1994005463A1 (fr) 1992-08-31 1994-03-17 Sandvik Ab Dispositif de serrage a ressort verrouillable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3441189A1 (fr) * 2017-08-08 2019-02-13 Matatakitoyo Tool Co., Ltd. Appareils de réglage de couple

Also Published As

Publication number Publication date
EP0697268B1 (fr) 1998-09-09
DE59503511D1 (de) 1998-10-15
ES2122403T3 (es) 1998-12-16
DE4428972C1 (de) 1996-02-08

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