EP1810788A1 - Ratschenschlüssel mit Halte- und Blockier-Funktion - Google Patents

Ratschenschlüssel mit Halte- und Blockier-Funktion Download PDF

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Publication number
EP1810788A1
EP1810788A1 EP06001294A EP06001294A EP1810788A1 EP 1810788 A1 EP1810788 A1 EP 1810788A1 EP 06001294 A EP06001294 A EP 06001294A EP 06001294 A EP06001294 A EP 06001294A EP 1810788 A1 EP1810788 A1 EP 1810788A1
Authority
EP
European Patent Office
Prior art keywords
ratchet wheel
annular groove
ratchet
enlarged head
hole
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Withdrawn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
EP06001294A
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 EP06001294A priority Critical patent/EP1810788A1/de
Publication of EP1810788A1 publication Critical patent/EP1810788A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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 that has clamping and blocking functions.
  • a conventional wrench in accordance with the prior art shown in Figs. 14 and 15 comprises a shank (A) having an enlarged head (B) formed on one end thereof.
  • a polygonal hole (C) is defined in the enlarged head (B) for partially receiving a tool bit (D).
  • One side of the enlarged head (B) is punched to inward form a lip (E) on each side of the polygonal hole (C).
  • the top of tool bit (D) is engaged to the lips (E) to prevent the tool bit (D) from overly extending through the polygonal hole (C) and detached from the enlarged head (B).
  • the punch process may transform the shape of the enlarged head (B) and change the standard of the polygonal hole (C). Consequently, the transformed wrenches are wasted.
  • a second conventional wrench in accordance with the prior art shown in Figs. 16 and 17 comprises a shank (a) having an enlarged head (b) formed on one end thereof.
  • a polygonal hole (c) is defined in the enlarged head (b) and extends through the enlarged head (b).
  • An annular groove (d) is defined in an inner periphery of the polygonal hole (c) for receiving a clamp element (e) to position the tool bit (f) during operating.
  • this embodiment provides no structure to prevent the tool bit (f) form overly extending through the enlarged hole (c). It is an inconvenient design.
  • the present invention has arisen to mitigate and/or obviate the disadvantages of the two conventional wrenches.
  • the main objective of the present invention is to provide an improved ratchet wrench that has clamping and blocking functions.
  • the ratchet wrench in accordance with the present invention comprises a shank having an enlarged head formed on one end thereof.
  • a through hole is defined in the enlarged head and a ratchet wheel is pivotally received in the through hole.
  • a first annular groove is defined in an inner periphery of the through hole.
  • the ratchet wheel has a polygonal hole longitudinally defined therein. The polygonal hole extends through the ratchet wheel.
  • a second annular groove and a second annular groove are respectively defined in an inner periphery of the polygonal hole.
  • a stopper is partially received in the second annular groove and adapted to prevent a tool bit overly extending through the ratchet wheel and a retainer is partially received in the third annular groove and adapted to position the tool bit in the ratchet wheel.
  • a ratchet wrench in accordance with the present invention comprises a shank (10) having an enlarged head (11) formed on one end thereof.
  • a through hole (100) is defined in the enlarged head (11).
  • a cavity (101) is defined in the enlarged head (11) and laterally communicates with the through hole (100).
  • a first annular groove (110) is 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 polygonal hole (120) longitudinally defined in the ratchet wheel (12). The polygonal hole (120) extends through the ratchet wheel (12).
  • a second annular groove (121) is defined in an inner periphery of the polygonal hole (120) near a top of the ratchet wheel (12) and a third annular groove (122) is defined in an inner periphery of the polygonal hole (120) near a bottom of the ratchet wheel (12).
  • a fourth annular groove (123) is defined in an outer periphery of the ratchet wheel (12) near the top of the ratchet wheel (12).
  • a ring-shaped stopper (20) is partially received in the second annular groove (121) in the ratchet wheel (12).
  • a retainer (30) is partially received in the third annular groove (122).
  • the retainer (30) partially and inward extends into the polygonal hole (120) in the ratchet wheel (12).
  • a C-shaped ring (40) is mounted between the enlarged head (11) and the ratchet wheel (12) to prevent the ratchet wheel (12) from detaching from the enlarged head (11).
  • a first tool bit (50) is inserted into the polygonal hole (120) and positioned in the ratchet wheel (12).
  • the first tool bit (50) has an annular groove (51) defined in an outer periphery thereof.
  • the annular groove (51) laterally corresponds to the third annular groove (122) when the first tool bit (50) is inserted into the polygonal hole (12).
  • a pawl (90) is movably received in the cavity (101) and selectively engaged to the ratchet wheel (12) for deciding the operating direction of the ratchet wheel (12).
  • a direction control unit (60) is mounted in the enlarged head (11) for driving the pawl (90) to engage to the ratchet wheel (12).
  • the C-shaped ring (40) is simultaneously received in the first annular groove (110) in the enlarged head (11) and the fourth annular groove (123) in the ratchet wheel (12) to hold the ratchet wheel (12) in place in the enlarged head (11).
  • the retainer (30) is simultaneously received in the annular groove (51) in the first tool bit (50) and the third annular groove (122) to position the first tool bit (50), and a top of the first tool bit (50) is engaged to the stopper (20) to prevent the first tool bit (50) from overly extending through the ratchet wheel (12) when the first tool bit (50) is inserted into the polygonal hole (120) in the ratchet wheel (12).
  • the ratchet wheel (12) is pivotally received in the enlarged head (11), and the C-shaped ring (40) is simultaneously received in the first annular groove (110) in the enlarged head (11) and the fourth annular groove (123) in the ratchet wheel (12) to hold the ratchet wheel (12) in place in the enlarged head (11).
  • a second tool bit (70) is partially inserted into the polygonal hole (120) in the ratchet wheel (12).
  • the second tool bit (70) has a shoulder (71) formed on an outer periphery thereof.
  • the retainer (30) clamps the shoulder (71) to position the second tool bit (70) and the top of the second tool bit (70) is engaged to the stopper (20) to prevent the second tool bit (70) from overly extending through the ratchet wheel (12) when the second tool bit (70) is partially into the polygonal hole (120) in the ratchet wheel (12).
  • a third tool bit (80) is partially inserted into the polygonal hole (120) in the ratchet wheel (12).
  • the third tool bit (80) is a socket and has a shaft (800) centrally and longitudinally extending therefrom.
  • An annular groove (81) is defined in an outer periphery of the shaft (800).
  • the retainer (30) is simultaneously partially received in the annular groove (81) in the third tool bit (80) and the third annular groove (122) in the ratchet wheel (122) to position the third tool bit (80), an a top of the shaft (800) is engaged to the stopper (20) to prevent the shaft (800) overly extending through the ratchet wheel (12) when the third tool bit (80) is partially inserted into the polygonal hole (120) in the ratchet wheel (12).
  • the ratchet wheel (12) is pivotally received in the enlarged head (11), and the C-shaped ring (40) is simultaneously received in the first annular groove (110) in the enlarged head (11) and the fourth annular groove (123) in the ratchet wheel (12) to hold the ratchet wheel (12) in place in the enlarged head (11).
  • the ratchet wheel (12) further includes rotating structure (124) formed on the top thereof over the enlarged head (11). The operator can use the rotating structure (124) to quickly the ratchet wheel (12) with the tool bit for shortening the operating time.
  • the rotating structure (124) is cylindrical.
  • the rotating structure (124) is flat.
  • 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 annular groove (51) to position the tool bit (50) when the annular groove (51) horizontally corresponds to the retainer (30).
  • the top of the tool bit (50) abuts stopper (20) such that the tool bit (50) is stably positioned in the ratchet wheel (12).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP06001294A 2006-01-23 2006-01-23 Ratschenschlüssel mit Halte- und Blockier-Funktion Withdrawn EP1810788A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06001294A EP1810788A1 (de) 2006-01-23 2006-01-23 Ratschenschlüssel mit Halte- und Blockier-Funktion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06001294A EP1810788A1 (de) 2006-01-23 2006-01-23 Ratschenschlüssel mit Halte- und Blockier-Funktion

Publications (1)

Publication Number Publication Date
EP1810788A1 true EP1810788A1 (de) 2007-07-25

Family

ID=36177915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06001294A Withdrawn EP1810788A1 (de) 2006-01-23 2006-01-23 Ratschenschlüssel mit Halte- und Blockier-Funktion

Country Status (1)

Country Link
EP (1) EP1810788A1 (de)

Citations (1)

* 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

Patent Citations (1)

* 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

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 20071005

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Effective date: 20080216