EP1958736A1 - Clé plate à articulation pouvant être bloquée - Google Patents

Clé plate à articulation pouvant être bloquée Download PDF

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Publication number
EP1958736A1
EP1958736A1 EP07122305A EP07122305A EP1958736A1 EP 1958736 A1 EP1958736 A1 EP 1958736A1 EP 07122305 A EP07122305 A EP 07122305A EP 07122305 A EP07122305 A EP 07122305A EP 1958736 A1 EP1958736 A1 EP 1958736A1
Authority
EP
European Patent Office
Prior art keywords
actuating
lever arm
locking
tightening
tool
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Withdrawn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
EP07122305A
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Mehlau
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.)
Stahlwille Eduard Wille GmbH and Co KG
Original Assignee
Eduard Wille 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 Eduard Wille GmbH and Co KG filed Critical Eduard Wille GmbH and Co KG
Publication of EP1958736A1 publication Critical patent/EP1958736A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/06—Handle constructions reversible or adjustable for position
    • B25G1/063—Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners

Definitions

  • Operating tools for tightening and / or loosening of screw usually consist of an actuating head, which is firmly and immovably connected to a lever arm. About the lever arm, a user can apply a torque on the actuating head for tightening or loosening screw connection.
  • actuation tools is limited because at the place of a screwing sufficient workplace for the application of the operating tool must be present.
  • a disadvantage of the known actuating tools with a lockable locking is the complex construction of the locking mechanism with many, sometimes complicated components. This is especially true for locking mechanisms with a tubular lever arm, in which the mechanism is carried out to the handle and thus unlocking or locking the handle is possible. Such locking mechanisms cause high production costs and are susceptible to wear. Furthermore, in other locking mechanisms Entriegelungsieri far and thus hinder a screwing or are thereby inadvertently operated or damaged. In the known operating tools with non-lockable detents disadvantageous during a screwing unintentional pivoting of the actuating head is possible.
  • a wrench is described with a key head hinged to a key arm.
  • the key head has a toothed, arcuate surface into which a toothed segment provided on the upper side of a U-shaped control element can engage.
  • the control is positioned to lock the key head by two positioning elements so that the sector gear engages the toothed surface.
  • the bottom of the control has an arc surface.
  • a user pivots the control member along the arc surface and against the positioning members away from the key head.
  • a disadvantage of this locking mechanism is that the control is tilted upon actuation by the user. As a result, dirt can penetrate into the interstices of the locking mechanism and affect the functionality or cause damage or destruction of the mechanism.
  • the object of the invention is therefore to avoid the disadvantages of the prior art and to provide a simply constructed and securely locking locking mechanism.
  • the invention is based on the principle of providing a U-shaped molded part and a spring at a joint between an actuating head and a lever arm of the actuating tool for locking.
  • the molding is positively guided by the trained as a joint, for example forked end of the lever arm.
  • the fitting has at its end face at least one locking tooth, which engages for locking in a toothing of the actuating head.
  • the fitting is pressed with the locking tooth to the actuating head.
  • a user can lift the locking of the actuating head by moving the fitting against the spring and away from the actuating head. In this case, the locking tooth is moved out of the toothing of the actuating head.
  • the U-shaped fitting fits tightly against the lever arm.
  • a flat design can be realized, which makes it possible to use the tool even in cramped conditions.
  • the legs or lobes of the U-shaped fitting can be completely or partially submerged in a groove of the lever. They then take up no additional space during assembly with this operating tool.
  • unintentional release of the lock or damage during a screwing operation is avoided by the flat design. With the positive engagement of the fitting on the lever arm, even during an operation further contamination of the lock is effectively prevented.
  • the annular toothing of the Arretiermechanismusses sweeps in an embodiment of the invention an angle of at least 150 °.
  • This has the advantage that the actuating head can be pivoted relative to the lever arm to both sides by at least 75 °.
  • the actuating tool according to the invention is thereby optimally adaptable to a limited working range of a screw connection and can be used in many ways.
  • the angle of the tooth gaps of the toothing is between 10 ° and 30 °. At such an angle self locking of the lock becomes effective, i. H. When loaded, the locking tooth is not pressed out of the toothing, but securely held by the toothing. This achieves a very uncomplicated and effective locking of the actuating head and prevents an independent unlocking of the lock.
  • the actuating head is designed as a plug-in or Aufstecktechnikmaschinegne.
  • the actuator head is so universally applicable, for example, by attaching or plugging a bit holder, in turn, the bits can be inserted, a jaw or wrench or other socket wrench for a variety of different screws or nuts.
  • a ratchet mechanism is arranged in the actuating head.
  • a ratchet mechanism transmits an applied torque in one direction of rotation and, in the other direction of rotation, allows free rotation of the lever arm without torque transmission.
  • a screw connection is much faster and easier for a user.
  • the actuating head is designed as a ring spanner, open-end wrench or as an inner or outer polygon. This allows the operating tool with equip and use standardized tools. It is therefore basically easy to implement for any comparable tool variant and can be used during assembly.
  • a particularly preferred variant of the actuating tool results when the spring is wholly or partially provided in a bore of the lever arm.
  • the spring is not dirty. Small particles, for example, can not sit in the turns of a coil spring and affect the function of the spring.
  • the spring is guided in the bore and is largely protected by the bore.
  • An advantageous embodiment of the actuating tool according to the invention further consists in that the locking tooth or the U-shaped molded part has a pin which is inserted into the bore and spring-loaded with the spring.
  • the lock receives an additional guide, which additionally stabilizes the locking mechanism of the tool in addition to the U-shaped molding.
  • a ratchet tool 10 is shown as an operating tool for tightening or loosening screw connections.
  • the ratchet tool 10 has a lever arm 12 with a Betrelinsgriffl 4 and a Betrelinskopfl 6.
  • the Betreliistskopfl 6 is connected via a hinge 18 with an axis 20 pivotally connected to the lever arm 12 and is locked or unlocked by a locking mechanism 22.
  • the actuating head 16 is shown locked in three different angular positions relative to the lever arm 12.
  • the actuating head 16 includes a square coupling 24 for coupling various plug-in tools, which are selected depending on the screw connection. Furthermore, the actuating head 16 includes a ratchet joint 26 for transmitting a torque to the square coupling 24 in a rotational direction and release of the square coupling 24 in the other direction of rotation. With a switching element 28, the direction of rotation is set, in which a torque is transmitted.
  • a crown-shaped toothing 30 is provided, which sweeps in the embodiment described here, an angle of 180 °. In further embodiments, an angle of more than 180 ° and / or a non-annular toothing 30 are provided.
  • the locking tooth 32 is arranged on the front side of a U-shaped molding 34.
  • the U-shaped molding 34 is positively guided by the hinge 18 formed to the end of the lever arm 12. As a result, the U-shaped shaped part 34 is supported by its legs on the lever arm 12 for locking. With a spring 36 between the lever arm 12 and the mold part 34, the mold part 34 is held with the locking tooth 32 to the actuating head 16. At this time, the operation head 16 is locked by engaging the lock tooth 32 in the teeth 30.
  • a user actuates the locking mechanism 22 by displacing the U-shaped fitting 34 in the direction of the actuating handle 14 against the spring 36 (arrow 38).
  • the locking tooth 32 is disengaged from the toothing 30 and releases the actuating head 16.
  • the user selects a desired angular position between actuating head 16 and lever arm 12 during the actuation of the molded piece 34 and then in turn releases the molded part 34.
  • the spring 36 the molded part 34 is guided to the actuating head 16.
  • the Vereizelungs leopard 32 engages the toothing 30 and locks the actuating head 16 safely in the user desired angular position.
  • Fig. 2 adjusts the operating tool Fig.1 in a top view.
  • the same components are therefore also designated by corresponding reference numerals.
  • the hinge 18 is formed by a bifurcated end of the lever arm 12 into which a part of the actuating head 16 projects.
  • the lever arm 12 and the operating head 6 are pivotally connected to each other by an axle 20 formed as a screw.
  • an axle 20 formed as a screw.
  • a pressing bolt is possible.
  • the U-shaped molded part 34 is guided in a form-fitting manner in the fork-shaped end of the lever arm 12 and is displaceable in the direction of the actuating handle 14 for unlocking the actuating head 16 (arrow 38).
  • Fig. 3 to Fig. 6 show a second, similar embodiment of an actuating tool 40 for tightening or loosening screw with different tools and change in different views.
  • actuating tool 40 for tightening or loosening screw with different tools and change in different views.
  • the components of the previous embodiment of Fig. 1 and Fig. 2 are identical, identical reference numerals are used.
  • Design and function of the lever arm 12, the hinge 18 and the locking mechanism 22 correspond to those of the first embodiment.
  • a second embodiment of an actuating tool 40 is shown in a side view.
  • a lever arm 12 is connected by a hinge 18 with an actuating head 42.
  • the hinge 18 is lockable with a locking mechanism 22.
  • the locking mechanism 22 corresponds to that of the first embodiment.
  • the actuating head 42 has a tool holder 44 with a securing mechanism 46.
  • a ratchet head 48 is inserted into the tool holder 44. By the securing mechanism 46 of the ratchet head 48 is held securely and easily detachable from the tool holder 44.
  • the actuating head 42 can be positioned at different angles to the lever arm 12.
  • Three different angular positions of the actuating head 42 are shown.
  • Fig. 4 shows the embodiment according to Fig. 3 in a supervision.
  • the U-shaped molding 34 can be seen, which can be moved in the direction of arrow 38.
  • the locking mechanism 22 with the locking tooth 32 (s. Fig. 3 ) and the operating head 42 can be pivoted by a user to a desired angle to the lever arm 12.
  • Fig. 5 illustrates the embodiment Fig. 3 and Fig. 4 with a ring wrench insert 50.
  • the ring wrench insert 50 is also set with the joint 18 and the locking mechanism 22 at different angles to the lever arm 12.
  • the tool holder 44 also allows use of other exchange tools, such. B. an open-end wrench or a usable bit holder.
  • Fig. 6 shows the embodiment of an operating tool with a lockable joint and a removable head recording Fig. 5 in a side view.
  • the described locking mechanism 22 is designed to be uncomplicated and secure locking and consists essentially only of a U-shaped molding 34 and a spring 36. This has a correspondingly favorable effect on the production costs. Since the U-shaped fitting 34 fits snugly against the lever arm 12, unintentional release of the lock or damage during a screwing operation is avoided.
  • the operating tool 10 or 40 is universally applicable to a variety of screwing and is particularly suitable for screw connections with limited workspace conditions.
  • FIG. 7 shows, in a side view, an embodiment of an operating tool, as shown in FIG Fig. 1 is shown.
  • the same components are therefore designated by corresponding reference numerals.
  • a pin 52 is provided at the bottom of the locking tooth 32, which faces the lever arm 12.
  • This pin 52 projects positively into a bore 54 and stabilizes the locking mechanism 22 by this additional guide.
  • the bore 54 is arranged substantially centrally and longitudinally to the lever arm 12.
  • the spring 36 does not engage directly with the locking tooth 32 but with the pin 52.
  • the spring 36 is inserted into the bore 54 for this purpose.
  • the pin 52 and thus the locking tooth 32 is biased by the spring 36.
  • the locking mechanism 22 can therefore be solved only against this spring force. In this way, the locking mechanism 22 is protected.
EP07122305A 2007-02-19 2007-12-04 Clé plate à articulation pouvant être bloquée Withdrawn EP1958736A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200720002533 DE202007002533U1 (de) 2007-02-19 2007-02-19 Schraubenschlüssel mit arretierbarem Gelenk

Publications (1)

Publication Number Publication Date
EP1958736A1 true EP1958736A1 (fr) 2008-08-20

Family

ID=38038333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07122305A Withdrawn EP1958736A1 (fr) 2007-02-19 2007-12-04 Clé plate à articulation pouvant être bloquée

Country Status (2)

Country Link
EP (1) EP1958736A1 (fr)
DE (1) DE202007002533U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1002309S1 (en) 2020-12-30 2023-10-24 Milwaukee Electric Tool Corporation Wrench

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106312893A (zh) * 2016-08-25 2017-01-11 安徽六方重联机械股份有限公司 螺栓自动紧固装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027238A2 (fr) * 1979-10-13 1981-04-22 Hans Mesenhöller Clé à cliquet à tête de travail articulée sur le manche
US4711145A (en) * 1986-07-24 1987-12-08 Isao Inoue Ratchet handle
EP0309880A2 (fr) * 1987-09-29 1989-04-05 Hazet-Werk Hermann Zerver GmbH & Co. KG Outil à main
DE8902523U1 (fr) * 1988-12-14 1989-05-18 Mesenhoeller, Hans, 5630 Remscheid, De
US6000302A (en) * 1998-04-07 1999-12-14 Chiang; Der Ching Tool having rotatable driving head
US6886429B1 (en) * 2004-03-01 2005-05-03 Chang-Chuan Lee Ratchet wrench having a pivotal head
US20050274234A1 (en) * 2004-06-14 2005-12-15 Li-Ju Lee Hand tool having an adjustable head
US7000507B1 (en) * 2004-12-03 2006-02-21 Lea Way Hand Tool Corporation Hand tool having a joint lock mechanism
DE202006010564U1 (de) 2006-07-06 2006-09-07 Hsieh, Chih-Ching Positionierung von Schraubenschlüssel
US7174815B1 (en) * 2006-05-03 2007-02-13 Chih-Ching Hsieh Hand tool with a swinging structure

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027238A2 (fr) * 1979-10-13 1981-04-22 Hans Mesenhöller Clé à cliquet à tête de travail articulée sur le manche
US4711145A (en) * 1986-07-24 1987-12-08 Isao Inoue Ratchet handle
EP0309880A2 (fr) * 1987-09-29 1989-04-05 Hazet-Werk Hermann Zerver GmbH & Co. KG Outil à main
DE8902523U1 (fr) * 1988-12-14 1989-05-18 Mesenhoeller, Hans, 5630 Remscheid, De
US6000302A (en) * 1998-04-07 1999-12-14 Chiang; Der Ching Tool having rotatable driving head
US6886429B1 (en) * 2004-03-01 2005-05-03 Chang-Chuan Lee Ratchet wrench having a pivotal head
US20050274234A1 (en) * 2004-06-14 2005-12-15 Li-Ju Lee Hand tool having an adjustable head
US7000507B1 (en) * 2004-12-03 2006-02-21 Lea Way Hand Tool Corporation Hand tool having a joint lock mechanism
US7174815B1 (en) * 2006-05-03 2007-02-13 Chih-Ching Hsieh Hand tool with a swinging structure
DE202006010564U1 (de) 2006-07-06 2006-09-07 Hsieh, Chih-Ching Positionierung von Schraubenschlüssel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1002309S1 (en) 2020-12-30 2023-10-24 Milwaukee Electric Tool Corporation Wrench

Also Published As

Publication number Publication date
DE202007002533U1 (de) 2007-04-26

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