EP1512498A1 - Clés avec deux tiges d'entraínement articulés entre eux - Google Patents

Clés avec deux tiges d'entraínement articulés entre eux Download PDF

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Publication number
EP1512498A1
EP1512498A1 EP03019992A EP03019992A EP1512498A1 EP 1512498 A1 EP1512498 A1 EP 1512498A1 EP 03019992 A EP03019992 A EP 03019992A EP 03019992 A EP03019992 A EP 03019992A EP 1512498 A1 EP1512498 A1 EP 1512498A1
Authority
EP
European Patent Office
Prior art keywords
driving stem
driving
stem
section
wrench according
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Withdrawn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
EP03019992A
Other languages
German (de)
English (en)
Inventor
Mark S. Warner
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 EP03019992A priority Critical patent/EP1512498A1/fr
Publication of EP1512498A1 publication Critical patent/EP1512498A1/fr
Withdrawn legal-status Critical Current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
    • B25G1/06—Handle constructions reversible or adjustable for position
    • B25G1/063—Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners
    • 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
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/008—Allen-type keys
    • 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
    • B25B23/0028—Angular adjustment means between tool head and handle

Definitions

  • the invention relates in general to a wrench having two driving stems pivotally connected with each other. More particularly, this invention relates to a hex key type or Allen wrench having two individual driving stems pivotally connected with each other.
  • a conventional wrench for example, an Allen wrench, used for gripping and turning or twisting the head of a bolt, a cap screw, a nut, a pipe, or the like commonly comprises a one-piece L-shape metal with one end used as the driving stem and the other end used as a handle.
  • Huang discloses a tool having a foldable structure.
  • the foldable structure disclosed by Huang comprises a coupler pivotally coupled between a driving stem and a handle. Applying the foldable structure to the Allen wrench, the driving stem can be folded in parallel with the handle, that is, with a zero angle relative to the handle. This results in a more compact space for storing the tool.
  • the driving stem can be rotated from an angle of zero degrees to an angle of 180 degrees.
  • the handle of the Allen wrench adopting the foldable structure disclosed by Huang can only be turned between zero degrees to 180 degrees along a surface perpendicular to the driving stem.
  • the user has to disengage the wrench from the bolt.
  • the turning action is repeated until the bolt is fastened as required.
  • the invention provides a wrench having two driving stems pivotally connected with each other.
  • One of the driving stems has a female fork joint protruding from the main stem with a hole at the center thereof.
  • the other driving stem has a male connecting joint protruding form the axial center of the main stem.
  • the male joint and the female joint are engaged with each other via a connector such as a roll pin. Therefore, without using an additional hinge or other mechanical coupler, these two driving stems are pivotally connected with each other.
  • One of these two pivotally connected driving stems flips from an angle of about 90 degrees to an angle of about 270 degrees relative to the other.
  • one of the driving stems used as a handle can flip with an angle from about 90 degrees to about 270 degrees with respect to the other of the driving stems used for driving a screw, a bolt or a nut. Therefore, when the rotation of the handle is obstructed, the handle can be lifted up or down to perform fastening or removing.
  • the specific flipping angle of the handle actually depends on the distance between the driving stems. That is, the handle can also be flipped from an angle less than 90 degrees to an angle larger than 270 degrees.
  • the applicability of the wrench structure provided by the invention is also applicable for driving a socket head screw, bolt or nut, including bolts or screws having a "star" shaped heads commonly referred to as the Torx ® tips, in a space with limited degree of freedom.
  • a socket head screw, bolt or nut including bolts or screws having a "star" shaped heads commonly referred to as the Torx ® tips
  • the rotation of the handle is obstructed by the presence of an object.
  • the screw is engaged with the driving stem, and the handle is turned to drive the driving stem, so as to thread/unthread the screw.
  • the rotating range of the handle is limited within a certain angle along a surface parallel to the first plane.
  • the rotating action of the handle is from one end to the other, that is, from an angle of zero degree to the certain degree along the surface, the user does not need to disengage the driving stem from the nut. Instead, the user can simply flip the handle to the other end, that is, from the angle of 90 degrees to 270 degrees relative to the driving stem, and carry on driving the screw.
  • an object with a different depth is to be engaged and driven, or when a different torque is required, one may interchange the functions of these two driving stems.
  • the user may choose to align the two stems with each other (at zero degree angle) and drive the object by applying a socket wrench to the free end of the stem opposite the driving stem.
  • Figures 1(a) to 6(e) illustrate the present invention embodied by a hex-key type or Allen wrench with two driving stems pivotally connected with each other. Being pivotally connected, one of the driving stems is used as a handle to drive the other driving stem so that an object such as a socket head nut, screw or bolt can be threaded or unthreaded.
  • the handle can be flipped from an angle of about 90 degrees to about 270 degrees with respect to the driving stem used to unthread/unthread the object. In this manner, even with the presence of an object that obstructs the threading/unthreading operation, the user does not need to disengage the object and rotate the handle to carry on threading/unthreading.
  • Figure 1 (a) shows a side view of the wrench comprising two driving stems pivotally connected with each other.
  • a roll pin 14 is used to thread through each of the driving stems.
  • the roll pin 14 can also replaced with other similar coupler such as a set of bolt and nut.
  • the usage of the roll pin 14 can be clearly observed from the partly exploded front views as shown in Figure 1(a) and Figure 1(b).
  • Figures 1(a) to 1(c) all show the wrench with the driving stems 10, 12 positioned perpendicularly with each other.
  • Figures 1(d) and 1(e) show the wrench having an end with cut away grove and rounded stem end corners 26 at one end of the driving stem 10. Said rounded end is designed for ease of engaging the wrench with the fastening device such as a screw, a bolt, or a nut.
  • Figure 1(f) shows the cut away grove and rounded stem end corners 26 at one end of the driving stem 12.
  • Figure 1(g) shows the cut away grove and rounded stem end corners 26 being at one end of the driving stem 10 and at one end of the driving stem 12.
  • Figures 1(h) and 1(i) are side and frontal views of the wrench with Torx ® tips at of both short and long driving stems. Although not shown, it is possible to have the Torx ® tip be placed at just the short driving stem or be placed at just the long driving stem.
  • Figures 1(j) and (k) are the cross-sectional views of the driving stems.
  • Figures 2(a) and 2(b) show both the side view and the front view of the driving stem 10 of the wrench.
  • the driving stem 10 comprises a female joint at one end thereof.
  • a rectangular section extends from the driving stem, and two fillets 16 with equal dimensions stand out from two opposite edges of the rectangular section and leave a space in between.
  • Figure 2(c) shows a cross sectional view of the driving stem 10 cutting along the line II-II.
  • the cross section of the driving stem 10 is a hexagon with a width of d for each side. The cant of each side is about 60 degrees.
  • each of the fillets 16 has a hole in the center thereof. The holes of both fillets 16 align with each other such that a roll pin 14 as shown in Figure 1 (a) can thread through both holes.
  • Figures 3 (a) to 3(c) show the driving stem 12 with a male joint 22.
  • the male joint 22 includes a projection of rectangular cross section which protrudes from a central portion of one end from one side to the opposite side of the driving stem 12.
  • the male joint 22 has a thickness to be fitted into the space between two fillets 16 of the female joint of the driving stem 10.
  • the thickness is approximately equal to the length d of one side of the driving stem 10.
  • the width of the projection 22 is about ⁇ 3d .
  • Figure 3(c) shows a cross sectional view of the driving stem 12 along the cutting line III-III. It is clearly seen that the driving stem 12 has a hexagon cross section with each side having a width of d .
  • a top view of the male joint on top of the driving stem 12 is shown as Figure 3(d).
  • the male joint also has a hole in the center thereof to enable the roll pin 14 to thread through as shown in Figure 3(b).
  • the male joint is a dome like structure having a width approximately the same as the width of the space between the fillets 16 in the driving stem 10.
  • these two stems 10 and 12 are pivotally coupled to each. One can thus flip one of the driving stems 10 and 12 from an angle of 90 degrees to an angle of 270 degrees with respect to the other driving stem.
  • Figure 4 shows the assembly of the driving stems 10 and 12.
  • the length of both driving stems 10 and 12 can be varied according to specific requirement.
  • the driving stem 10 with a female joint is longer than the driving stem with a male joint.
  • the driving stem 12 is approaching the driving stem 10 with the male joint towards the female joint along the direction of arrow 42.
  • a roll pin 14 threads into the holes of the male and female joint to fasten the driving stems 10 and 12 to an extent that one of them can flip over the other. Radial compression of the roll pin while being inserted provides some rotational resistance to the rotating action.
  • the direction to thread the roll pin 14 through both the driving stems 10 and 12 is illustrated as the arrow 41.
  • Figure 5(a) to Figure 6(e) show another embodiment according to the invention.
  • a driving stem with another type of male joint is illustrated
  • a driving stem with another type of female joint is illustrated.
  • the driving stem with a male joint is shorter than the driving stem with a female joint.
  • Figure 5(a) and Figure 5(b) are a side view and front view of the driving stem with a male joint.
  • one end of the driving stem 52 comprises a male joint portion 54.
  • the male joint portion further comprises a base portion 54a extending from the main stem of the driving stem 52 with a curved bottom and a flat top.
  • On top of the flat top of the base portion 54a there is a flat plate 54b, and at the central portion of the flat plate 54b, a fillet 54c stands out.
  • the side view of such male joint portion 54 is shown in Figure 5(b).
  • FIG. 5(c) A cross sectional view cutting along the line V-V is shown as Figure 5(c).
  • the cross section of the main stem of the driving stem 52 is in a hexagonal shape with each side having a width of d and a cant of about 60 degrees.
  • a top view of the male joint portion 54 is shown as Figure 5(d). From the top view, the male joint portion 54 is like a circle that covers the whole cross section of the main stem.
  • the thickness of the fillet 54c is approximately equal to d
  • the width of the fillet 54c that is, the diameter of the male joint base portion 54b is substantially larger than ⁇ 3d .
  • Figure 6(a) and Figure 6(b) are a side view and front view of the driving stem 62 with a female joint 64.
  • one end of the driving stem 62 comprises a female joint portion 64.
  • the female joint portion further comprises a base portion 64a extending from the main stem of the driving stem 62 with a curve bottom and a flat top. Protruding from the cylindrical base portion 64, there is a fork-like structure 64b that allows the fillet 54c of the driving stem 52 in Figure 5(a) to be engaged therein.
  • the fork-like structure as shown in Figure 6(a), comprises a slotted extension of the cylindrical base portion 64 with a rounded end as shown by Figure 6(b), thereby forming two prongs with flat machined interior faces and cylindrical curved outer surfaces as shown by Figures 6(a) and 6(d).
  • FIG. 6(b) The side view of such female joint portion 64 is shown in Figure 6(b).
  • a cross sectional view cutting along the line VI-VI is shown as Figure 6(c).
  • the cross section of the main stem of the driving stem 62 is a hexagonal shape with each side having a width of d and a cant of about 60 degrees.
  • a top view of the female joint portion 64 is shown as Figure 6(d). From the top view, space allowing the fillet 54c to be engaged therein has a thickness of approximately d , and the base section diameter of the female joint portion 64 is much larger than ⁇ 3d with exact dimension based on strength calculations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP03019992A 2003-09-03 2003-09-03 Clés avec deux tiges d'entraínement articulés entre eux Withdrawn EP1512498A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03019992A EP1512498A1 (fr) 2003-09-03 2003-09-03 Clés avec deux tiges d'entraínement articulés entre eux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03019992A EP1512498A1 (fr) 2003-09-03 2003-09-03 Clés avec deux tiges d'entraínement articulés entre eux

Publications (1)

Publication Number Publication Date
EP1512498A1 true EP1512498A1 (fr) 2005-03-09

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EP03019992A Withdrawn EP1512498A1 (fr) 2003-09-03 2003-09-03 Clés avec deux tiges d'entraínement articulés entre eux

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013558A1 (de) * 2008-03-11 2009-09-17 Fanny Hi Winkelverstellbarer Werkzeuggriff
US7698972B2 (en) 2008-03-05 2010-04-20 Fanny Hi Multi-angle tool handle
TWI667105B (zh) * 2017-05-11 2019-08-01 美商施耐寶公司 具有不同材料的頂端的六角鍵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1431389A (en) * 1920-03-12 1922-10-10 George E Frisz Operating tool
FR1027581A (fr) * 1950-11-13 1953-05-13 Clef à tube perfectionnée
US3068728A (en) * 1960-03-07 1962-12-18 Thomas L Shepherd Socket wrench
CA1175261A (fr) * 1981-10-07 1984-10-02 Richard R. Timewell Cle rapide coudee double
WO1990001399A1 (fr) * 1987-05-06 1990-02-22 Ingvar Sundberg Clef polygonale inclinable
US20020108473A1 (en) * 2000-08-28 2002-08-15 Warner Mark S. Wrenches having two driving stems pivotally connected with each other
US6443039B1 (en) * 2000-04-04 2002-09-03 Mark Warner Wrenches having two driving stems pivotally connected with each other

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1431389A (en) * 1920-03-12 1922-10-10 George E Frisz Operating tool
FR1027581A (fr) * 1950-11-13 1953-05-13 Clef à tube perfectionnée
US3068728A (en) * 1960-03-07 1962-12-18 Thomas L Shepherd Socket wrench
CA1175261A (fr) * 1981-10-07 1984-10-02 Richard R. Timewell Cle rapide coudee double
WO1990001399A1 (fr) * 1987-05-06 1990-02-22 Ingvar Sundberg Clef polygonale inclinable
US6443039B1 (en) * 2000-04-04 2002-09-03 Mark Warner Wrenches having two driving stems pivotally connected with each other
US20020108473A1 (en) * 2000-08-28 2002-08-15 Warner Mark S. Wrenches having two driving stems pivotally connected with each other

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7698972B2 (en) 2008-03-05 2010-04-20 Fanny Hi Multi-angle tool handle
DE102008013558A1 (de) * 2008-03-11 2009-09-17 Fanny Hi Winkelverstellbarer Werkzeuggriff
DE102008013558B4 (de) * 2008-03-11 2010-09-16 Fanny Hi Winkelverstellbarer Werkzeuggriff
TWI667105B (zh) * 2017-05-11 2019-08-01 美商施耐寶公司 具有不同材料的頂端的六角鍵
US10981262B2 (en) 2017-05-11 2021-04-20 Snap-On Incorporated Wrench with threaded end bits

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