EP3632628A1 - Manivelle à cliquet - Google Patents

Manivelle à cliquet Download PDF

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Publication number
EP3632628A1
EP3632628A1 EP18198150.7A EP18198150A EP3632628A1 EP 3632628 A1 EP3632628 A1 EP 3632628A1 EP 18198150 A EP18198150 A EP 18198150A EP 3632628 A1 EP3632628 A1 EP 3632628A1
Authority
EP
European Patent Office
Prior art keywords
hand crank
section
handle
ratchet
body section
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Withdrawn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
EP18198150.7A
Other languages
German (de)
English (en)
Inventor
Guido Kohnen
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
Priority to EP18198150.7A priority Critical patent/EP3632628A1/fr
Publication of EP3632628A1 publication Critical patent/EP3632628A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B25B23/0021—Prolongations interposed between handle and tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/005—Handle constructions for screwdrivers, wrenches or spanners with additional levers, e.g. for increasing torque
    • B25G1/007—Handle constructions for screwdrivers, wrenches or spanners with additional levers, e.g. for increasing torque of crank type

Definitions

  • the invention relates to a hand crank.
  • Hand cranks have been known for a long time from the prior art. As a rule, these comprise an end section with a plug-in connection for the corresponding accommodation of the device, for example for the lifting device of extendable caravan or trailer supports or for awnings.
  • a crank arm extends to the end section, at the other end of which a plug connection to the shaft of the device to be rotated is provided.
  • a support from a caravan or a support wheel from a vehicle trailer can be extended or retracted by actuating the shaft of the device.
  • the basic principle of a hand crank corresponds to that of a one-armed lever in the mechanics, the lever arm corresponding to the distance between the handle of the crank and the bearing pivot in the center of the crank.
  • the torque generated with the hand crank corresponds to the force multiplied by the length of the crank.
  • the usual hand cranks can only transmit a torque that is directly dependent on the length of the crank arm, that is to say on the distance of the handle from the plug-in connection end. So the use of a known hand crank holds higher ones Loads to slip the danger with your hands and requires a lot of effort when operating under load.
  • ratchet means in particular a screwing tool, also called a ratchet, with which a rotary movement in a certain direction is generated in a limited working space by repeated, sector-wise actuation.
  • Ratchets or creaking consist of the hand lever, on which an often rubberized or plastic handle is arranged at one end, at the other end is the ratchet or creaking mechanism with freewheel in one direction of actuation.
  • the connecting element which is the force-transmitting connection to the base body section of the hand crank manufactures.
  • the connecting element of the ratchet can be designed as a ring spanner with a clamping wedge and spring washer.
  • the ratchet 5 is designed to be plugged onto the base body section 3.
  • ratchet allows great variability since the size of the ratchet can be selected as required.
  • hand crank can be stowed away easily and space-savingly by removing the ratchet when not in use.
  • the base body section 3 is configured U-shaped adjacent to the terminal handle section 2. This ensures improved handling and power transmission with quick confirmation of the hand crank.
  • a rotatably attached sleeve 6 intended. This makes handling easier and can give the user a more comfortable grip when turning the crank handle without friction.
  • the handle of the handle section 2 can be designed to be rotatable and / or pluggable. As a result, the handle can advantageously be replaced if it is worn, for example.
  • the handle of the handle section 2 is designed as two articulated rod sections.
  • This variant is particularly preferred in the case of awnings, in order to make the handle section stowable in a space-saving manner and in the case of rain it does not have any horizontal surfaces in which the water can collect. This prevents rusting or weathering of the handle sections.
  • the base body section 3 has a reinforcement 7 in the engagement area of the ratchet 5. This advantageously ensures that there is no material fatigue in the area of the force transmission between the ratchet 5 and the base body section 3 of the hand crank 1.
  • the reinforcement 7 is designed as a thickening of the base body section 3. With a larger diameter, a larger contact surface can advantageously be provided for the ratchet 5.
  • connection section 4 can additionally or alternatively be designed such that it can accommodate interchangeable connection attachments 8.
  • connection attachments 8 can be designed as any part that produces a non-positive mechanical connection to the device.
  • the connection attachments 8 can, for example, be square or hexagon socket wrench inserts, square or hexagon pins, a socket for fastening with a cross pin, a hook for engaging in an eyelet or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tents Or Canopies (AREA)
EP18198150.7A 2018-10-02 2018-10-02 Manivelle à cliquet Withdrawn EP3632628A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18198150.7A EP3632628A1 (fr) 2018-10-02 2018-10-02 Manivelle à cliquet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18198150.7A EP3632628A1 (fr) 2018-10-02 2018-10-02 Manivelle à cliquet

Publications (1)

Publication Number Publication Date
EP3632628A1 true EP3632628A1 (fr) 2020-04-08

Family

ID=63722197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18198150.7A Withdrawn EP3632628A1 (fr) 2018-10-02 2018-10-02 Manivelle à cliquet

Country Status (1)

Country Link
EP (1) EP3632628A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191201830A (en) * 1912-01-23 1913-01-23 Ernest Henry Jones Improvements in or relating to Spanners, Wrenches, and similar Appliances.
US1400256A (en) * 1919-10-16 1921-12-13 Wilbur L Beaty Ratchet-wrench
US1547093A (en) * 1922-12-07 1925-07-21 Lawrence A Burch Ratchet attachment for tools
US1714361A (en) * 1924-07-07 1929-05-21 Gougler Clyde James Brace
US3267775A (en) * 1962-12-17 1966-08-23 Vashti Y Holt Adjustable torque tool having predetermined overload yielding means
US3276295A (en) * 1964-08-04 1966-10-04 Jack P Harper Combination socket wrench and oiler
GB2275637A (en) * 1993-03-05 1994-09-07 Malcolm Henry Improvements in and relating to wrench and socket systems

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191201830A (en) * 1912-01-23 1913-01-23 Ernest Henry Jones Improvements in or relating to Spanners, Wrenches, and similar Appliances.
US1400256A (en) * 1919-10-16 1921-12-13 Wilbur L Beaty Ratchet-wrench
US1547093A (en) * 1922-12-07 1925-07-21 Lawrence A Burch Ratchet attachment for tools
US1714361A (en) * 1924-07-07 1929-05-21 Gougler Clyde James Brace
US3267775A (en) * 1962-12-17 1966-08-23 Vashti Y Holt Adjustable torque tool having predetermined overload yielding means
US3276295A (en) * 1964-08-04 1966-10-04 Jack P Harper Combination socket wrench and oiler
GB2275637A (en) * 1993-03-05 1994-09-07 Malcolm Henry Improvements in and relating to wrench and socket systems

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