EP2556925B1 - Ratschenschlüssel mit offenem Ende - Google Patents

Ratschenschlüssel mit offenem Ende Download PDF

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Publication number
EP2556925B1
EP2556925B1 EP12180182.3A EP12180182A EP2556925B1 EP 2556925 B1 EP2556925 B1 EP 2556925B1 EP 12180182 A EP12180182 A EP 12180182A EP 2556925 B1 EP2556925 B1 EP 2556925B1
Authority
EP
European Patent Office
Prior art keywords
head portion
sliding groove
fixed jaw
sliding
working portion
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.)
Not-in-force
Application number
EP12180182.3A
Other languages
English (en)
French (fr)
Other versions
EP2556925A3 (de
EP2556925A2 (de
Inventor
Arthur Wu
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.)
Proxene Tools Co Ltd
Original Assignee
Proxene Tools Co Ltd
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 Proxene Tools Co Ltd filed Critical Proxene Tools Co Ltd
Priority to SI201230405T priority Critical patent/SI2556925T1/sl
Publication of EP2556925A2 publication Critical patent/EP2556925A2/de
Publication of EP2556925A3 publication Critical patent/EP2556925A3/de
Application granted granted Critical
Publication of EP2556925B1 publication Critical patent/EP2556925B1/de
Not-in-force 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle

Definitions

  • the present invention relates to a ratchet-action open-end wrench.
  • Conventional ratchet-action open-end wrench as shown in US 4,637,284 , has a fixed jaw, a movable jaw which is able to slide linearly, and an elastic member. In an operation condition, user can pull the wrench back and forth.
  • the movable jaw is able to reciprocate with respect to the fixed jaw.
  • the movable jaw can clutch threaded member along only a predetermined direction, so that the threaded member is rotated along the predetermined direction.
  • the threaded member would be released and would rotate with respect to the wrench when the wrench is pulled along the opposite direction. Threaded member can be detached or fastened easily.
  • the wrench mentioned above is not suitable for being used in a narrowed environment.
  • Moving direction of the movable jaw is simply aimed away from the fixed jaw, even away from handle of the wrench.
  • Considerable movement of the movable jaw is necessary for releasing the threaded member.
  • the movable jaw would probably blocked by other objects, especially in narrowed environment, failing to move and to release the threaded member.
  • wrenches are provided in several patents, such as US 5,287,777 , US 5,582,082 , and US 7,827,887 . These wrenches are suitable to be used in narrowed space, providing ratchet-action function.
  • the wrench revealed in US 5,287,777 which discloses the features of the preamble portion of claim 1, is similar to the wrench revealed in US 7,827,887 .
  • the movable jaws of the wrenches are slidable along a segmental pathway which is defined and limited by a pin, an arc-shaped hole, and several arc-shaped surfaces. Thus, the movable jaw is unable to rotate arbitrarily.
  • the other wrench shown in US 5,582,082 is provided with a pin and a linear extended hole, so that movable jaw of the wrench is able to slide. Further, both of movable jaw and fixed jaw of the wrench is formed with an arc-shaped surface. The arc-shaped surfaces are used for limiting sliding pathway of the movable jaw, so that the movable jaw can only slide with respect to the fixed jaw.
  • the wrenches mentioned above are suitable for narrowed space, being welcomed in the market.
  • the wrenches are difficult to be produced.
  • the components of the wrenches should be formed with several specific contours, especially arc-shaped surfaces, some of which are located in grooves.
  • the arc-shaped surfaces are necessary for keeping the movable jaw in the predetermined pathway.
  • the arc-shaped surfaces are very difficult to be machined or processed.
  • the arc-shaped surface of the wrench described in US 7,827,887 is located at an interior side of opening of the wrench. Machining tool, such as milling cutter, can hardly move into the opening. Thus, machining is obstructed.
  • precision casting may be chosen as a main process.
  • structure strength the wrench would be unwelcomed in strict operation condition.
  • surface precision movement of movable jaw of the wrench would be obstructed by dust.
  • precision casting would bring the manufacturing cost high. Market competitiveness of the wrenches would be probably destroyed by the disadvantages mentioned above.
  • the present invention is, therefore, arisen to obviate or at least mitigate the above mentioned disadvantages.
  • the main object of the present invention is to provide another ratchet-action open-end wrench which can be machined easily.
  • a ratchet-action open-end wrench of the present invention includes a main body, a working portion, a slidable mechanism, and an elastic member.
  • Said main body has a handle, at least a head portion, and a fixed jaw.
  • the head portion is connected to one end of the handle.
  • the fixed jaw extends and protrudes out from the head portion.
  • Said working portion has at least a connection arm and a movable jaw.
  • the connection arm abuts against the head portion.
  • An opening is defined by the movable jaw and the fixed jaw.
  • Said slidable mechanism comprises a sliding groove and a sliding portion.
  • the sliding groove is formed on one of the head portion and the connection arm.
  • the sliding portion is firmly disposed on the other one of the head portion and the connection arm.
  • the sliding portion is slidably disposed on the sliding groove, so that the working portion is able to slide along the sliding groove with respect to the main body.
  • the working portion is slidable between a first position and a second position. A width of the opening is minified when the working portion slides toward the first position.
  • the sliding groove is arc-shaped. An arc center of the sliding groove is located out of the head portion.
  • the main body is located between the arc center and the movable jaw.
  • the sliding portion has a non-circular cross section, so that the sliding portion is unable to rotate in the sliding groove arbitrarily.
  • Said elastic member abuts against the main body and the working portion, so that the working portion has a tendency to slide toward the first position.
  • the ratchet-action open-end wrench of the present embodiment has an opening which is provided for clamping threaded member, such as screw, nut, or other similar component. User can pull the wrench back and forth. The wrench would drive the threaded member to rotate along a single direction so as to detach or fasten the threaded member.
  • the wrench includes a main body 1, a working portion 2, a slidable mechanism 3, and an elastic member 4.
  • the main body 1 has a handle 11, a head portion 12, and a fixed jaw 13.
  • the head portion 12 is connected to one end of the handle 11.
  • the fixed jaw 13 extends and protrudes out from the head portion.
  • the head portion 12 connects the handle 11 to the fixed jaw 13.
  • handling bar or hanging hole may be disposed on one end of the handle 11, where is away from the head portion 12.
  • the fixed jaw 13 may be further formed with a recess 131.
  • the head portion 12 is formed with a receiving groove 121. Thickness of the fixed jaw 13 may be greater than thickness of the head portion 12.
  • the main body 1 can be formed with two step surfaces on two sides of the main body 1, as shown in Fig. 2 and Fig. 3 .
  • the step surfaces are located between the fixed jaw 13 and the head portion 12.
  • it is also possible that the main body is formed with single step surface on one side of the main body.
  • the working portion 2 has two connection arms 21 and a movable jaw 22, as shown in Fig. 2 and Fig. 3 .
  • the connection arms 21 abut against the head portion 12.
  • the head portion 12 is located between the two connection arms 21.
  • the movable jaw 22 is connected to the connection arms 21.
  • the movable jaw 22 and the fixed jaw 13 are facing each other so as to define the opening therebetween.
  • the movable jaw 22 may formed with the other recess 221.
  • the recess 221 of the movable jaw and the recess 131 of the fixed jaw are facing each other.
  • the recesses 221, 131 are able to clamp corners of a polygonal column of a threaded member 5, as shown in Fig. 4 .
  • Each of the connection arms 21 is formed with a fixation hole 211.
  • the working portion 2 has two connection arms 21 so as to clip the head portion 12 therein. Dust or debris would be blocked out by the connection arms 21 so as to keep motion of the head portion 12 and the connection arms 21 smooth.
  • the working portion may have only one connection arm.
  • the main body has two head portion correspondingly. Thus, connection arm can be positioned between the two head portion, obtaining similar dust-proof effect.
  • the slidable mechanism 3 includes a sliding groove 31 and a sliding portion.
  • the sliding groove 31 is formed on the head portion 12.
  • the sliding portion is firmly disposed on the connection arms 21. More particularly, the sliding portion includes a sliding member 321 and a fixation pin 322.
  • the sliding member 321 is slidably received in the sliding groove 31.
  • the sliding member 321 is formed with an aperture 323.
  • the fixation pin 322 penetrates through the aperture 323 and is received in fixation holes 211 of the connection arms 21. It should be noted that the fixation pin 322 should be unable to rotate with respect to the sliding member 321 and the connection arms 21.
  • the fixation pin 322, the aperture 323, and the fixation holes 211 may be formed with non-circular cross section if necessary.
  • the sliding portion is slidably disposed on the sliding groove 31.
  • the working portion 2 is able to slide along the sliding groove 31 with respect to the main body 1.
  • the sliding member 321 is formed in arc-shaped, so that the sliding portion has a non-circular cross section.
  • the sliding portion is unable to rotate in the sliding groove 31 arbitrarily.
  • the sliding groove 31 extends and is formed arc-shaped.
  • Arc center 311 of the sliding groove 31 is located out of the head portion 12, as shown in Fig. 4 .
  • the movable jaw 22 is located at right side of the main body 1, and the arc center 311 is located at left side of the main body 1. In other words, the movable jaw 22 and the arc center 311 are located at opposite sides divided by the main body 1.
  • width of the opening would be changed when the working portion 2 and the movable jaw 22 move along the sliding groove together with the sliding portion.
  • the sliding portion is still able to rotate in a universal aspect since the sliding groove 31 is arc-shaped. However, the rotation caused by sliding along the sliding groove 31 is ignored here. Rotation of the sliding portion discussed above is rotation of the sliding portion with respect to the sliding groove. Unable to rotate of the sliding portion with respect the sliding groove should not be regarded as that the sliding portion is unable to slide and rotate along curved sliding groove.
  • the elastic member 4 abuts against and locates between the main body 1 and the working portion 2. More particularly, the elastic member 4 is received in the receiving groove 121 of the head portion, and abuts against the working portion 2.
  • the sliding portion is able to slide along the sliding groove 31.
  • the sliding portion is firmly disposed on the connection arms 21 of the working portion.
  • the working portion 2 can slide along the arc-shaped sliding groove 31 together with the sliding portion.
  • the working portion 2 can slide between a first position and a second position.
  • the opening defines a width direction.
  • the opening is used for clamping a threaded member 5 therein.
  • Two opposite ends of the working portion 2, the fixed jaw 13, and the head portion 12 has an initial width Do therebetween.
  • the working portion 2 is able to slide along the sliding groove 31 toward the second position.
  • the threaded member 5 can escape from the fixed jaw 13 and the movable jaw 22 so as to rotate in the opening arbitrarily.
  • Two opposite ends of the working portion 2, the fixed jaw 13, and the head portion 12 has a maximum width Dm therebetween.
  • subtraction of the maximum width Dm and the initial width Do is smaller than ten percent of the initial width Do.
  • the threaded member 5 can escape from the opening without overly movement of the working portion 2.
  • the opening can clamp the threaded member 5 immediately so as to fasten or detach the threaded member 5 easily.
  • the wrench is suitable for operating in narrowed space since motion of the working portion 2 is minified by employing the arc-shaped sliding groove.
  • the elastic member 4 abuts against the working portion 2, so that the working portion 2 has a tendency to slide toward the first position.
  • the working portion 2 would slide to the first position when the working portion 2 is released from external force.
  • the connection arms 21 would abut against the step surfaces. Width of two opposite ends of the working portion 2, the fixed jaw 13, and the head portion 12 is then return to the initial width Do.
  • the sliding groove 31 is formed on the head portion 12.
  • the sliding portion is firmly disposed on the connection arms 21.
  • position of the sliding groove 31 and position of the sliding portion may be interchanged.
  • the sliding groove may be formed on the connection arms, and the sliding portion may be firmly disposed on the head portion.
  • the fixation holes of the connection arms should be removed, and the head portion should be formed with the corresponding fixation hole.
  • the sliding portion can be assembled on or attached to the head portion by fabrication or other manners.
  • a second embodiment of the present invention structure of the wrench is approximately similar to the wrench of the first embodiment.
  • the sliding portion is replaced with two pins 324.
  • Each of the connection arms 21 is formed with two fixation holes 211.
  • Each of the pins 324 penetrates through the sliding groove 31 and is received in two corresponding fixation holes 211 which are located on the connection arms respectively.
  • the pins 324 are able to slide along the sliding groove 31.
  • the working portion 2 is still able to slide along the arc-shaped sliding groove 31 between the first position and the second position, as shown in Fig. 8 and Fig. 9 .
  • the pin 324 may has circular cross sections respectively; even so, the cross section of the sliding portion is still non-circular since each of the pins 324 is regarded as only a part of the sliding portion.
  • the working portion 2 is still unable to slide in the sliding groove 31 arbitrarily.
  • whether each of the pins 324 is able to rotate is not limited. As such, the structure of the wrench is further simplified in the second embodiment.
  • the opening has a bottom end near the connection arm 21 a which is opposite to an open end of the opening.
  • the recess 221 a on the movable jaw 22a is more distant than the recess 131a on the fixed jaw 13a from the bottom end of the opening so that the two recesses 221a,131a are not symmetrical positionally.
  • an angle should be rotated to reposition a corner of the threaded member to the recess 221 a on the movable jaw 22a is decreased, so that it is easier for a user to operate back and forth.
  • a fourth embodiment is provided as shown in Fig. 11 .
  • a free end of the fixed jaw 13b has an inclined face 133 facing the opening.
  • the inclined face 133 is inclined toward the open end of the opening.
  • the notch 133 on the fixed jaw 13b is recessed away from the movable jaw 22b, and the notch 222 is recessed away form the fixed jaw 13b. With the notches 132,222, the fixed jaw 13b and the movable jaw 22b are prevented from abutting against corners of the threaded member 5. Thus, abrasion of the threaded member 5 is avoided.
  • the wrenches of the present embodiments have simplified structures. It is noted that arc-shaped abutting surface is dismissed, and only arc-shaped groove which can be manufactured easily is retained.
  • the components are suitable for machining and processing. Producing processes, such as machining, folding, casting, and pressing, can be chosen as the main producing process. As such, cost, precision, and structure strength can be managed well.

Claims (7)

  1. Ratschenschlüssel mit einem offenen Ende umfassend:
    einen Grundkörper (1) mit einem Griff (11), wenigstens einem Kopfabschnitt (12) und einer feststehenden Backe (13), wobei der Kopfabschnitt (12) mit einem Ende des Griffs (11) verbunden ist und wobei sich die feststehende Backe (13) ausgehend von dem Kopfabschnitt (12) erstreckt und daraus hervorsteht,
    einen Arbeitsabschnitt (2) mit wenigstens einem Verbindungsarm (21) und einer beweglichen Backe (22), wobei der Verbindungsarm (21) an dem Kopfabschnitt (12) anliegt und wobei zwischen der beweglichen Backe (22) und der feststehenden Backe (13) eine Öffnung ausgebildet ist,
    einen verschiebbaren Mechanismus (3), der ein Gleitrille (31) und einen Gleitabschnitt umfasst, wobei die Gleitrille (31) entweder an dem Kopfabschnitt (12) oder dem Verbindungsarm (21) gebildet ist, wobei der Gleitabschnitt fest an einem anderen von dem Kopfabschnitt (12) und dem Verbindungsarm (21), angeordnet ist, wobei der Gleitabschnitt verschiebbar in der Gleitrille (31) angeordnet ist, sodass der Arbeitsabschnitt (2) in Bezug auf den Grundkörper (1) entlang der Gleitrille (31) verschiebbar ist, wobei der Arbeitsabschnitt (2) zwischen einer ersten Position und einer zweiten Position verschiebbar ist, wobei die Breite der Öffnung verkleinert wird, wenn der Arbeitsabschnitt (2) in Richtung der ersten Position verschoben wird, wobei die Gleitrille (31) bogenförmig ausgebildet ist, wobei der Gleitabschnitt einen nicht - runden Querschnitt aufweist, sodass sich der Gleitabschnitt nicht eigenständig in der Gleitrille (31) drehen kann,
    ein elastisches Element (4), das an dem Grundkörper (1) und dem Arbeitsabschnitt (2) anliegt, sodass der Arbeitsabschnitt (2) die Tendenz hat, sich in Richtung der ersten Position zu verschieben,
    dadurch gekennzeichnet, dass
    sich der Bogenmittelpunkt (311) der Gleitrille (31) außerhalb des Kopfabschnitts (12) befindet, wobei der Bogenmittelpunkt (311) und die bewegliche Backe (22) an gegenüberliegenden Seiten angeordnet sind, welche durch den Grundkörper (1) voneinander getrennt werden.
  2. Ratschenschlüssel mit einem offenen Ende nach Anspruch 1, wobei der Arbeitsabschnitt (2) zwei Verbindungsarme (21) umfasst, wobei die Verbindungsarme (21) an dem Kopfabschnitt (12) anliegen, wobei der Kopfabschnitt (12) zwischen den beiden Verbindungsarmen (21) positioniert ist und wobei die Gleitrille (31) an dem Kopfabschnitt (12) ausgebildet ist.
  3. Ratschenschlüssel mit einem offenen Ende nach Anspruch 2, wobei jeder der Verbindungsarme (21) mit zwei Befestigungslöchern (211) ausgebildet ist, wobei der Gleitabschnitt zwei Stifte (324) umfasst, wobei jeder der Stifte (324) durch die Gleitrille (31) hindurchgesteckt ist und in zwei korrespondierenden Befestigungslöchern (211) aufgenommen ist, die jeweils an den Verbindungsarmen (21) angeordnet sind, wobei die Stifte (324) entlang der Gleitrille (31) verschiebbar sind.
  4. Ratschenschlüssel mit einem offenen Ende nach einem der Ansprüche 1 bis 3, wobei eine Dicke der feststehenden Backe (13) größer als eine Dicke des Kopfabschnitts (12) ist, wobei der Grundkörper (1) mit wenigstens einer Stufenoberfläche ausgebildet ist, wobei die Stufenoberfläche zwischen der feststehenden Backe (13) und dem Kopfabschnitt (12) angeordnet ist, wobei der Verbindungsarm (21) an die Stufenoberfläche angrenzt, wenn sich der Arbeitsabschnitt (2) in der ersten Position befindet.
  5. Ratschenschlüssel mit einem offenen Ende nach Anspruch 1, wobei jede der feststehenden Backe (13) und der beweglichen Backe (22) mit einer Aussparung (131,221) ausgebildet ist, wobei die Aussparungen (131,221) einander zugewandt sind, um die Ecken einer mehreckigen Säule festzuklemmen.
  6. Ratschenschlüssel mit einem offenen Ende nach Anspruch 5, wobei die Öffnung ein unteres Ende aufweist, das sich nahe des Verbindungsarms (21 a) befindet, wobei die Aussparung (221 a) an der beweglichen Backe (22a) weiter von dem unteren Ende der Öffnung entfernt ist als die Aussparung (131 a) an der feststehenden Backe (13a), sodass die beiden Aussparungen an der beweglichen Backe (22a) und an der feststehenden Backe (13a) nicht symmetrisch angeordnet sind.
  7. Ratschenschlüssel mit einem offenen Ende nach Anspruch 1, wobei die Öffnung eine Breitenrichtung definiert, wobei, wenn sich der Arbeitsabschnitt (2) in der ersten Position befindet, die Öffnung so angepasst ist, dass ein Gewindebauteil (5) darin festgeklemmt werden kann, und zwischen zwei gegenüberliegende Enden des Arbeitsabschnitts (2), der feststehende Backe (13) und dem Kopfabschnitt (12) eine Ausgangsbreite (Do) ausgebildet ist, wobei, wenn der Arbeitsabschnitt (2) in die zweite Position verschoben wird und das Gewindebauteil (5), das sich zwischen der feststehenden Backe (13) und der beweglichen Backe (22) befindet, beliebig drehen kann, die zwei gegenüberliegenden Enden des Arbeitsabschnitts (2), die feststehende Backe (13) und der Kopfabschnitt (12) eine maximale Breite (Dm) aufweisen, und wobei die Differenz zwischen der maximalen Breite (Dm) und der Ausgangsbreite (Do) weniger als zehn Prozent der Ausgangsbreite (Do) beträgt.
EP12180182.3A 2011-08-12 2012-08-10 Ratschenschlüssel mit offenem Ende Not-in-force EP2556925B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201230405T SI2556925T1 (sl) 2011-08-12 2012-08-10 Ključ z odprtim koncem z ragljo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW100128816A TWI398324B (zh) 2011-08-12 2011-08-12 可往復棘輪式之開口扳手

Publications (3)

Publication Number Publication Date
EP2556925A2 EP2556925A2 (de) 2013-02-13
EP2556925A3 EP2556925A3 (de) 2014-06-18
EP2556925B1 true EP2556925B1 (de) 2015-10-14

Family

ID=46754320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12180182.3A Not-in-force EP2556925B1 (de) 2011-08-12 2012-08-10 Ratschenschlüssel mit offenem Ende

Country Status (5)

Country Link
EP (1) EP2556925B1 (de)
AU (1) AU2012211469B2 (de)
CA (1) CA2785973C (de)
SI (1) SI2556925T1 (de)
TW (1) TWI398324B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI625199B (zh) * 2016-10-11 2018-06-01 Wang shuo feng Universal wrench
TWI720853B (zh) * 2020-03-23 2021-03-01 吳竣賢 可調式扳手

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Also Published As

Publication number Publication date
TWI398324B (zh) 2013-06-11
EP2556925A3 (de) 2014-06-18
TW201307004A (zh) 2013-02-16
EP2556925A2 (de) 2013-02-13
CA2785973A1 (en) 2013-02-12
AU2012211469B2 (en) 2014-01-09
AU2012211469A1 (en) 2013-02-28
SI2556925T1 (sl) 2016-01-29
CA2785973C (en) 2014-04-29

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