EP1810789A1 - Ratschenschlüssel mit einem schnell rotierbaren Element mit Haltemittel - Google Patents

Ratschenschlüssel mit einem schnell rotierbaren Element mit Haltemittel Download PDF

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Publication number
EP1810789A1
EP1810789A1 EP06001295A EP06001295A EP1810789A1 EP 1810789 A1 EP1810789 A1 EP 1810789A1 EP 06001295 A EP06001295 A EP 06001295A EP 06001295 A EP06001295 A EP 06001295A EP 1810789 A1 EP1810789 A1 EP 1810789A1
Authority
EP
European Patent Office
Prior art keywords
ratchet wheel
hole
ratchet
disk
tool bit
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Withdrawn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
EP06001295A
Other languages
English (en)
French (fr)
Inventor
Tuan Mu Hsien-Chung
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.)
Lea Way Hand Tool Corp
Original Assignee
Lea Way Hand Tool Corp
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 Lea Way Hand Tool Corp filed Critical Lea Way Hand Tool Corp
Priority to EP06001295A priority Critical patent/EP1810789A1/de
Publication of EP1810789A1 publication Critical patent/EP1810789A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B25B13/463—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 a pawl engaging an externally toothed wheel
    • 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
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool

Definitions

  • the present invention relates to a ratchet wrench, and more particularly to a ratchet wrench with a quick-rotated element which has a blocking function.
  • a conventional ratchet wrench in accordance with the prior art shown in Fig. 8 comprises a shank (80) having a through hole (81) defined in an enlarged end of the shank (80).
  • a cavity (82) is defined in the enlarged end of the shank (80) and laterally communicates with the through hole (81).
  • a wrench wheel (83) is rotatably received in the through hole (81) and has a polygonal hole (831) centrally defined therein and extending through the wrench wheel (83) for partially receiving a tool bit and driving the tool bit.
  • the wrench wheel (83) has a flange (832) radially and integrally extending from an upper portion thereof.
  • the flange (832) has a diameter greater than that of the enlarged end of the shank (80) such that the operator can quickly rotate the ratchet wheel (83) via the flange (832).
  • a pawl (84) is mounted in the cavity (82) and selectively engaged to the ratchet wheel (83) for deciding the operating direction of the ratchet wheel (83).
  • a direction control member (85) mounted to the enlarged end of the shank (80) for driving the pawl (84).
  • the user can quickly rotate the ratchet wheel (83) via the flange (832) for shortening the operating time.
  • the flange (832) is integrally formed with the ratchet wheel (83) such that much material is wasted when forming the ratchet wheel (83) with the flange (832). Consequently, the manufacturing cost is raised.
  • a cavity (92) is defined in the enlarged end of the shank (90) and laterally communicates with the through hole (91).
  • a wrench wheel (93) is rotatably received in the through hole (91) and has a polygonal hole (931) centrally defined therein and extending through the wrench wheel (93) for partially receiving a tool bit and driving the tool bit.
  • a ring (94) with a flange is securely mounted to an upper portion of the ratchet wheel (93) and a pawl (95) is mounted in the cavity (92) for deciding the operating direction of the ratchet wheel (93).
  • the ring (94) with the flange is provided to solving the disadvantage of the above conventional ratchet wrench.
  • the ratchet wheel (93) provides no blocking function for the tool bit such that the tool bit may be detached from the ratchet wheel (93) during operating. It is very inconvenient.
  • the present invention has arisen to mitigate and/or obviate the disadvantages of the two conventional ratchet wrenches.
  • the main objective of the present invention is to provide an improved ratchet wrench with a quick-rotated element which provides a blocking function.
  • the ratchet wrench in accordance with the present invention comprises a shank and a ratchet wheel pivotally received in one end of the shank.
  • the ratchet wheel includes a polygonal hole centrally and longitudinally defined therein.
  • the polygonal hole extends through the ratchet wheel.
  • An annular groove is laterally defined in an inner periphery of the polygonal hole.
  • a disk is attached to a top of the ratchet wheel and has a through hole defined therein.
  • the through hole has a diameter smaller than that of the polygonal hole.
  • a retainer partially is received in the annular groove in the ratchet wheel, wherein the retainer is adapted to position a tool bit that is partially and longitudinally received in the polygonal hole.
  • a ratchet wrench in accordance with the present invention comprises a shank (10) has an enlarge end (11) formed on one end of the shank (10).
  • a through hole (100) is defined in the enlarge end (11) and a first annular groove (110) defined in an inner periphery of the through hole (100).
  • a ratchet wheel (12) is pivotally received in the through hole (100) and has a first protrusion (121) longitudinally extending from an upper end of the ratchet wheel (12).
  • a polygonal hole (120) is centrally defined in the ratchet wheel (12) and extends through the ratchet wheel (12).
  • a second annular groove (122) is defined in an inner periphery of the polygonal hole (120) under a middle section of the ratchet wheel (12) for receiving a retainer (30).
  • a disk (20) is mounted to the upper end of the ratchet wheel (12) and has a through hole (21) centrally defined therein.
  • the through hole (21) in the disk (20) has a diameter smaller than that of the polygonal hole (120).
  • the disk (20) has a second protrusion (22) extending from a bottom thereof and securely sleeved on the first protrusion (121) of the ratchet wheel (12) to hold the disk (20) in place.
  • the disk (20) has a diameter greater than that of the enlarged end (11) of the shank (10) such that the operator can quickly drive the ratchet wheel (12) by rotating the disk (20) to shorten the operating time.
  • a C-shaped ring (40) is received in the first annular groove (110).
  • a tool bit (50) is inserted into the polygonal hole (121) for driving a fastener (not shown).
  • the tool bit (50) has a third annular groove (51) laterally defined in an outer periphery of the tool bit (50).
  • a direction control unit (60) is mounted in the enlarged end (11) for controlling the operating direction of the ratchet wheel (12).
  • the ratchet wheel (12) and the C-shaped ring (40) are respectively disposed in the through hole (100) and the first annular groove (110), wherein the ratchet wheel (12) upwardly engaged to the C-shaped ring (40) and the first protrusion (121) extends over a top of the enlarged end (11).
  • the second protrusion (22) of the disk (20) is securely sleeved on the first protrusion (121) of the ratchet wheel (12) such that the disk (20) and the C-shaped ring (40) are provided to prevent the ratchet wheel (12) from detaching from the enlarged end (11).
  • the retainer (30) is partially received in the third annular groove (51) to position the tool bit (50) when the tool bit (50) in inserted into the polygonal hole (120) and the top of the tool bit (50) abuts a periphery of the through hole (21) in the disk (20) to prevent the tool bit (50) from overly extending through the ratchet wheel (12).
  • the ratchet wheel (12) and the C-shaped ring (40) are respectively disposed in the through hole (100) and the first annular groove (110), wherein the ratchet wheel (12) upwardly engaged to the C-shaped ring (40) and the first protrusion (121) extends over a top of the enlarged end (11).
  • the second protrusion (22) of the disk (20) is securely sleeved on the first protrusion (121) of the ratchet wheel (12) such that the disk (20) and the C-shaped ring (40) are provided to prevent the ratchet wheel (12) from detaching from the enlarged end (11).
  • a second tool bit (70) is inserted into the polygonal hole (121).
  • the second tool bit (70) has a shoulder (71) formed near a middle section thereof.
  • the retainer (30) holds the shoulder (71) of the second tool bit (70) to position the second tool bit (70) when the tool bit (50) in inserted into the polygonal hole (120) and the top of the second tool bit (70) abuts a periphery of the through hole (21) in the disk (20) to prevent the second tool bit (70) from overly extending through the ratchet wheel (12).
  • the retainer (30) is outwardly opened when the tool bit (50) inserted into the polygonal hole (120) in the ratchet wheel (12).
  • the retainer (30) immediately shrinks to be partially received in the third annular groove (51) to position the tool bit (50) when the third annular groove (51) horizontally corresponds to the retainer (30).
  • the top of the tool bit (50) abuts the periphery of the through hole (21) in the disk (20) such that the tool bit (50) is stably positioned between the ratchet wheel (12) and the disk (20).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP06001295A 2006-01-23 2006-01-23 Ratschenschlüssel mit einem schnell rotierbaren Element mit Haltemittel Withdrawn EP1810789A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06001295A EP1810789A1 (de) 2006-01-23 2006-01-23 Ratschenschlüssel mit einem schnell rotierbaren Element mit Haltemittel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06001295A EP1810789A1 (de) 2006-01-23 2006-01-23 Ratschenschlüssel mit einem schnell rotierbaren Element mit Haltemittel

Publications (1)

Publication Number Publication Date
EP1810789A1 true EP1810789A1 (de) 2007-07-25

Family

ID=36499166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06001295A Withdrawn EP1810789A1 (de) 2006-01-23 2006-01-23 Ratschenschlüssel mit einem schnell rotierbaren Element mit Haltemittel

Country Status (1)

Country Link
EP (1) EP1810789A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1391267A2 (de) * 2002-08-20 2004-02-25 Hand Tool Design Corporation Reversibles Ratschenwerkzeug
US20040089110A1 (en) * 2002-11-07 2004-05-13 Chih-Ching Hsien Metal piece attraction device on ratchet tool
US20040093995A1 (en) * 2002-07-22 2004-05-20 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US20040149087A1 (en) * 2003-02-04 2004-08-05 Chin-Ching Hsien Ratchet tool with magnetic engaging member
US20040206212A1 (en) * 2002-08-21 2004-10-21 Chin-Ching Hsien Ratchet wrench having a rotatable ring to operate engaging member
EP1486292A1 (de) * 2003-06-12 2004-12-15 Lea Way Hand Tool Corporation Umschalter für ein Handwerkzeug und reversierbarer Ratschenschlüssel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040093995A1 (en) * 2002-07-22 2004-05-20 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
EP1391267A2 (de) * 2002-08-20 2004-02-25 Hand Tool Design Corporation Reversibles Ratschenwerkzeug
US20040206212A1 (en) * 2002-08-21 2004-10-21 Chin-Ching Hsien Ratchet wrench having a rotatable ring to operate engaging member
US20040089110A1 (en) * 2002-11-07 2004-05-13 Chih-Ching Hsien Metal piece attraction device on ratchet tool
US20040149087A1 (en) * 2003-02-04 2004-08-05 Chin-Ching Hsien Ratchet tool with magnetic engaging member
EP1486292A1 (de) * 2003-06-12 2004-12-15 Lea Way Hand Tool Corporation Umschalter für ein Handwerkzeug und reversierbarer Ratschenschlüssel

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