EP2199034A1 - Ergonomischer Werkzeuggriff - Google Patents

Ergonomischer Werkzeuggriff Download PDF

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Publication number
EP2199034A1
EP2199034A1 EP09165018A EP09165018A EP2199034A1 EP 2199034 A1 EP2199034 A1 EP 2199034A1 EP 09165018 A EP09165018 A EP 09165018A EP 09165018 A EP09165018 A EP 09165018A EP 2199034 A1 EP2199034 A1 EP 2199034A1
Authority
EP
European Patent Office
Prior art keywords
handle
ratcheting mechanism
midportion
palm
encasing
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Withdrawn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
EP09165018A
Other languages
English (en)
French (fr)
Inventor
Christopher Brent
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.)
Meridian International Co Ltd
Original Assignee
Meridian International 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
Priority claimed from CNU2008201575294U external-priority patent/CN201350610Y/zh
Application filed by Meridian International Co Ltd filed Critical Meridian International Co Ltd
Publication of EP2199034A1 publication Critical patent/EP2199034A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/06—Handle constructions reversible or adjustable for position
    • B25G1/063—Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners
    • B25G1/066—Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners the grip itself being angularly adjustable

Definitions

  • the present disclosure relates to an improved ergonomic handle for increasing the applied torque to a ratcheting mechanism. More specifically, the disclosure relates to a handle body adapted to receive force from a user's palm.
  • Ratcheting drivers have been in existence for many years. These drivers include screwdrivers, nut drivers, ratchets and the like. Improvements in drivers have created tools able to deliver more torque than past devices. However, improvements in handle bodies have not kept up with the advances in ratcheting mechanisms.
  • Such drivers generally included a drive member having an axis of rotation and adapted to be engaged with an associated driven member, such as a fastener or the like, for rotating it.
  • the drive member is coupled to a handle which is adapted to be received, in use, in the palm of a user's hand.
  • Such handles have heretofore taken a number of different shapes.
  • One standard type of tool has an elongated handle which crosses the axis of the drive member to define a generally T-shaped tool.
  • Another type of handle is shaped as a knob and adaptable for gripping by a user's hand. This type of tool is disclosed in U.S. Pat. 6,079,298 .
  • a handle body for a ratcheting tool has an ergonomic shape for receiving the palm of a user's hand.
  • the handle is comprised of an elongated inner core with a protruded midportion.
  • the core is surrounded by an encasing having a substantially convex profile which slopes downward toward the ratcheting mechanism.
  • Substantially near the apex of the protruded midportion is an orifice for receiving a torsion bar to provide more torque.
  • the handle further has a female end opposite the ratcheting mechanism end for extending the length of the tool.
  • FIG. 1 is an isometric view of the handle body with a ratcheting mechanism, viewing the handle body from the ratchet end;
  • FIG. 2 is an isometric view of the handle body with a ratcheting mechanism, viewing the handle body from the user's end;
  • FIG. 3 is an isometric view of the core of the handle body.
  • FIG. 4 is a side elevational view of a portion of a ratcheting mechanism.
  • the driver 100 with ratcheting mechanism 102 is comprised of a core 110 surrounded by an ergonomic encasing 106.
  • the core 110 is preferably made of steel or a steel composite material such as zinc alloy and is generally T-shaped.
  • the core 110 in an embodiment, is surrounded by an encasing 106. Therefore, the core is preferably shaped to readily allow for a molding to be formed around it. Ridges on the core 110 allow for surfaces for which the molding can affix.
  • the core 110 is T-shaped and therefore has an outwardly extending mid-portion which gives the driver mechanism 100 its unique shape.
  • the mid-portion has an orifice 107 at its outer end.
  • Orifice 107 is designed to receive a torsion bar or an alternative leverage bar (not shown). The user inserts the bar through the orifice 107 which creates a lever.
  • using a leverage bar reduces the amount of work needed to turn the driver. This is especially advantageous for hard to remove fasteners.
  • the core 110 also provides a female end 104 adapted to receive an extension bar (not shown).
  • the female end 104 is adapted to receive either a 3/8"or 1/4" square extension, however, one skilled in the art would easily recognize the female end can be formed to receive any number of sizes.
  • Driver 100 with the extension bar allows the user to increase the length of the driver 100 by fixing the bar into the female end 104.
  • the other end of the core 110 provides a receptacle 112 for receiving a ratcheting mechanism 102.
  • a portion 115 of a typical ratcheting mechanism 102 is shown in FIG. 4 .
  • the portion 115 has an engagement end 103 which securely fastens the ratcheting mechanism 102 inside the receptacle 112 of the core 110.
  • the engagement end 103 is formed with four rows of linear teeth 113 adapted to engage within the receptacle 112 of the core 110 and therefore fasten the ratcheting mechanism to the core 110.
  • the teeth 113 securely fix the ratcheting mechanism 102 with the core 110.
  • any means of securing the main body to the handle body may be employed.
  • the engagement end 113 of the ratcheting mechanism 102 could be threaded.
  • An ergonomic encasing 106 is manufactured around the core 110.
  • the encasing 106 is shaped to receive the palm of the user's hand.
  • the encasing 106 of the core 110 is generally cylindrical, but is formed to encompass the upwardly extending mid-portion of the core 110. This creates a substantially convex profile having a peak that gradually slopes downward toward the end containing the ratcheting mechanism 102 and the female end 104.
  • the encasing 106 is made from plastic, however, any type of material is sufficient and meant to be encompassed by this disclosure.
  • the side surfaces of the encasing 106 are shaped to fit generally the palm of the user's hand or that portion of the hand which extends from the base of the fingers to above the wrist. This novel design allows the user to apply more rotational force to the driver than otherwise possible by merely gripping and turning with the wrist.
  • the encasing 106 is provided with a cushioning grip in the form of a sheath 108 of a suitable elastomeric material or rubber to provide increased comfort and improved grip.
  • the sheath 108 is of substantially uniform thickness over most of its area, this thickness being substantially equal to the height of raised indicia (if any), so that the tops of those indicia are exposed.
  • the sheath 108 may be molded over the encasing 106 or, alternatively, could be secured in place by a suitable adhesive.
  • the driver is a ratcheting driver
  • the principles of the invention are equally applicable to non-ratcheting drivers.
  • an embodiment discloses a specific shape and material, it should be appreciated that other materials or variations in shape could be utilized while still achieving the advantages of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP09165018A 2008-12-22 2009-07-09 Ergonomischer Werkzeuggriff Withdrawn EP2199034A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU2008201575294U CN201350610Y (zh) 2008-12-22 2008-12-22 多功能螺丝批
US12/486,021 US20100154601A1 (en) 2008-12-22 2009-06-17 Ergonomic tool handle

Publications (1)

Publication Number Publication Date
EP2199034A1 true EP2199034A1 (de) 2010-06-23

Family

ID=41785773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09165018A Withdrawn EP2199034A1 (de) 2008-12-22 2009-07-09 Ergonomischer Werkzeuggriff

Country Status (1)

Country Link
EP (1) EP2199034A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212336A (en) * 1978-07-24 1980-07-15 Smith William C Screwdriver
US4606246A (en) * 1985-01-02 1986-08-19 Gunther John R Socket wrench coupler
DE8907900U1 (de) * 1988-09-05 1989-08-10 Tik Tovarna Igel Kobarid, p.o., Kobarid Heft eines Schraubendrehers
US5822830A (en) * 1997-07-21 1998-10-20 Lin; Chiang Her Handle for L shaped tool
US6079298A (en) 1998-03-18 2000-06-27 Snap-On Tools Company Ergonomic handle and driver incorporating same
GB2354729A (en) * 1999-09-30 2001-04-04 Philip Royston Felski Compact multi-bit screwdriver
EP1247621A2 (de) * 2001-04-02 2002-10-09 Weber Instrumente GmbH Handgriff
US20080271578A1 (en) * 2007-05-02 2008-11-06 Endeavor Tool Co. Ratcheting handle for a tool

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212336A (en) * 1978-07-24 1980-07-15 Smith William C Screwdriver
US4606246A (en) * 1985-01-02 1986-08-19 Gunther John R Socket wrench coupler
DE8907900U1 (de) * 1988-09-05 1989-08-10 Tik Tovarna Igel Kobarid, p.o., Kobarid Heft eines Schraubendrehers
US5822830A (en) * 1997-07-21 1998-10-20 Lin; Chiang Her Handle for L shaped tool
US6079298A (en) 1998-03-18 2000-06-27 Snap-On Tools Company Ergonomic handle and driver incorporating same
GB2354729A (en) * 1999-09-30 2001-04-04 Philip Royston Felski Compact multi-bit screwdriver
EP1247621A2 (de) * 2001-04-02 2002-10-09 Weber Instrumente GmbH Handgriff
US20080271578A1 (en) * 2007-05-02 2008-11-06 Endeavor Tool Co. Ratcheting handle for a tool

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