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WO2003039813A1 - Cle - Google Patents

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Publication number
WO2003039813A1
WO2003039813A1 PCT/KR2002/001864 KR0201864W WO03039813A1 WO 2003039813 A1 WO2003039813 A1 WO 2003039813A1 KR 0201864 W KR0201864 W KR 0201864W WO 03039813 A1 WO03039813 A1 WO 03039813A1
Authority
WO
WIPO (PCT)
Prior art keywords
wrench
housing
slope surface
clutch member
slope
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.)
Ceased
Application number
PCT/KR2002/001864
Other languages
English (en)
Inventor
Tae-Hwan Ha
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2003039813A1 publication Critical patent/WO2003039813A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • 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
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
    • B25B13/20—Arrangements for locking the jaws
    • B25B13/22—Arrangements for locking the jaws by ratchet action or toothed bars

Definitions

  • the present invention relates to a wrench for manipulating fasteners such as bolts and nuts.
  • Fasteners such as bolts and nuts are widely used in order to conjoin separate parts, and various types of wrenches have been devised and used
  • an open end wrench and a box end wrench are simple types of such wrenches.
  • the motivation for the present invention is to provide a-
  • An exemplary wrench useful with the present invention includes: a housing having an interior hole; a handle for supplying torque to the housing; and a fastening unit, being disposed in the interior hole of the housing, rotatable in one direction relative to the housing.
  • the one directional rotatability of the fastening unit may be realized
  • the fastening unit preferably includes: a fastening body having an exterior circumference, wherein a slope surface is formed at the exterior circumference such that a depth of the slope surface from the exterior circumference increases as a distance from an outward end of the slope surface increases; a clutch member disposed between the slope surface and the housing; and an elastic unit adapted to provide an outward biasing force
  • the slope surface may be planar, and a cross-section of the clutch
  • the clutch member is preferably circular such that the clutch member can roll on the
  • the elastic unit can be realized by an elastic member abutted by the fastening body and a piston disposed between the elastic member and the clutch member. In this case, an operation hole, having a predetermined
  • a plurality of slope surfaces is symmetrically provided.
  • FIG. 1 is an exploded perspective view of a wrench according to a preferred embodiment of the present invention
  • FIG. 2 is a partial cross-sectional view of a wrench according to a preferred embodiment of the present invention.
  • FIG. 3 illustrates a power stroke of a wrench according to a preferred embodiment of the present invention.
  • FIG. 4 illustrates a free stroke of a wrench according to a preferred embodiment of the present invention.
  • a wrench 100 includes a housing 101 having a handle
  • a fastening unit 1 10 being disposed inside the housing 101 , being rotatable in one direction relative to the housing 101 .
  • a hole of a predetermined radius is formed at the housing 101 , the fastening unit 1 10 is disposed therein, and a snap ring 103 is provided to prevent separation of the fastening unit 1 10 from the hole.
  • FIG. 1 shows that a snap ring 103 is preferably disposed at both upper and lower sides of the housing 101. However, it is also preferable that the snap ring 103 is disposed at only one of the upper and lower sides of the
  • the fastening unit 1 10 includes a fastening body 120, a piston 130, a
  • a hole for receiving a fastener is formed at a center of the fastening body 120, and accordingly a fastening surface 121 , the inner surface of the
  • fastening body 120 is shaped as a polygon having a predetermined number of planes.
  • the predetermined number of planes of the polygon may be arbitrarily preset by a person skilled in the art, and it is preferably preset as one of 6 and 12.
  • a slope surface 122 is formed at an exterior circumference of the fastening body 120 such that the slope surface 122 forms a predetermined angle with a tangential direction of the exterior circumference.
  • the clutch member 140 is of a shape of a cylinder such that the clutch member 140 can roll on the slope surface 122.
  • a spring 135 is disposed inside the operation hole 125, an end of the spring 135 being abutted by an inner wall of the hole 125, and a piston 130 is connected
  • the spring 135 supplies a biasing force on the piston 130
  • the piston 130 comes in contact with both the slope surface 122 and
  • a plurality of slope surfaces 122 are formed at the exterior of the fastening body 120, and FIG. 2 shows that five slope surfaces 122 are formed at the fastening body 120.
  • the number of slope surfaces 122 can be varied according to choice of a person skilled in the art.
  • the plurality of slope surfaces 122 are disposed symmetrically such that a tightening/loosening force of the wrench 100 can also be symmetrically distributed.
  • piston 130, and a spring 135 are disposed in the same way that has been described above with reference to the partially enlarged view in FIG. 2.
  • FIG. 2 illustrates that the slope surface 122 is planar
  • the shape of the slope surface 122 is not limited to be planar. On the contrary,
  • the slope surface 122 can be of any shape such that the depth from the exterior circumference of the fastening body 120 to the slope surface 122 increases as the distance from an outward end of the slope surface 122 increases.
  • the fastener 300 is inserted into the fastening body 120 and is fitted by the
  • fastening surface 121 of a polygonal shape for example, a twelve-angled shape is shown in this preferred embodiment
  • the wrench 100 is rotated using the handle 102.
  • the fastener 300 is either tightened or loosened according to the embodiment of this invention
  • FIG. 3 illustrates how the fastener is tightened.
  • the clutch member 140 When the wrench 100 is rotated in a clockwise direction as shown in FIG. 3, the clutch member 140 receives clockwise rotating force because of friction between the housing 101 and the clutch member 140. Therefore, the clutch member 140 is forced to roll outward on the slope surface 122 of the fastening body 120.
  • FIG. 3 illustrates a case wherein a rotating force in a clockwise direction is supplied, it also provides an understanding of the case wherein a rotating force in a counterclockwise direction is supplied, because in order to a supply counterclockwise rotating force, the wrench 100 can be
  • the fastener 300 can be tightened or loosened.
  • Such forcing and rotating the fastener 300 by a degree is referred to as a "power stroke" hereinafter.
  • Repeated application of the power stroke to the fastener 300 enables tightening or loosening of the fastener 300 to a desired position.
  • the wrench 100 In order to repeatedly apply the power stroke without disengaging the wrench 100 from the fastener 300, the wrench 100 is rotated in the direction opposite to that of the power stroke (with respect to the example of a power stroke shown in FIG. 3, in a counterclockwise direction). Such rotating of the wrench 100 in the direction reverse to the power stroke is referred to as "free stroke" hereinafter.
  • the fastener 300 can be more easily tightened or loosened even when the space for operating the wrench 100 is very small due to nearby obstacles.
  • the clutch member 140 keeps in contact with the housing 101 and the slope surface 122 of the fastening body 120 due to the biasing force of the spring 135, free play is minimized even when a constituent part, for example the clutch member 140, of the wrench 100 wears.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention concerne une clé présentant un jeu réduit. Ladite clé de cette invention comprend un logement pourvu d'un trou interne, un manche permettant de distribuer un couple au logement, et une unité de fixation disposée dans le trou interne du logement et tournant dans un sens par rapport au logement.
PCT/KR2002/001864 2001-11-05 2002-10-07 Cle Ceased WO2003039813A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2001-0033847(UM) 2001-11-05
KR2020010033847U KR200261464Y1 (ko) 2001-11-05 2001-11-05 라쳇트 스패너

Publications (1)

Publication Number Publication Date
WO2003039813A1 true WO2003039813A1 (fr) 2003-05-15

Family

ID=27751848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2002/001864 Ceased WO2003039813A1 (fr) 2001-11-05 2002-10-07 Cle

Country Status (2)

Country Link
KR (1) KR200261464Y1 (fr)
WO (1) WO2003039813A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012056330A1 (fr) * 2010-10-29 2012-05-03 Inżynieria Maszyn Klimatycznych I Urządzeń Specjalnych Sp. Z O.O. Clé de dévissage ou de vissage
US20160271761A1 (en) * 2015-03-16 2016-09-22 Ting-Kai CHANG Silent socket wrench
US12280471B2 (en) 2021-06-01 2025-04-22 Milwaukee Electric Tool Corporation Tool with gearless ratchet mechanism

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2152697A1 (de) * 1971-10-22 1973-04-26 Ernst Skrobek Kopfretsch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2152697A1 (de) * 1971-10-22 1973-04-26 Ernst Skrobek Kopfretsch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012056330A1 (fr) * 2010-10-29 2012-05-03 Inżynieria Maszyn Klimatycznych I Urządzeń Specjalnych Sp. Z O.O. Clé de dévissage ou de vissage
US20160271761A1 (en) * 2015-03-16 2016-09-22 Ting-Kai CHANG Silent socket wrench
US12280471B2 (en) 2021-06-01 2025-04-22 Milwaukee Electric Tool Corporation Tool with gearless ratchet mechanism

Also Published As

Publication number Publication date
KR200261464Y1 (ko) 2002-01-23

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