EP0130256A2 - Zusammenlegbarer Kreuzschlüssel - Google Patents

Zusammenlegbarer Kreuzschlüssel Download PDF

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Publication number
EP0130256A2
EP0130256A2 EP83307897A EP83307897A EP0130256A2 EP 0130256 A2 EP0130256 A2 EP 0130256A2 EP 83307897 A EP83307897 A EP 83307897A EP 83307897 A EP83307897 A EP 83307897A EP 0130256 A2 EP0130256 A2 EP 0130256A2
Authority
EP
European Patent Office
Prior art keywords
wrench
key
coupling member
cap member
headed bolt
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.)
Ceased
Application number
EP83307897A
Other languages
English (en)
French (fr)
Other versions
EP0130256A3 (de
Inventor
Chung-Hsin Chang
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
Publication of EP0130256A2 publication Critical patent/EP0130256A2/de
Publication of EP0130256A3 publication Critical patent/EP0130256A3/de
Ceased 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
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/06—Spanners; Wrenches with rigid jaws of socket type
    • 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
    • B25B13/005—Cross wrenches

Definitions

  • This invention relates to cross wrench and more particularly to foldable cross wrench wherein a coupling means is included to enable the folding of the wrench body when not used.
  • Wrenches are those of the most important and most- used tools in a machanic's kit for loosening or tightening bolts and nuts.
  • a cross wrench specifically designed for some special occasions is disadvantaged by its large dimension, which will occupy a large space when stored and not convenient to be carried.
  • a cross wrench including two levers each with work head at two ends thereof, which are pivoted at the intersection part and can be pivoted to aligned one above the other. But it still occupies relative large spece when stored away.
  • the present invention contemplates a foldable cross wrench which comprises a coupling member incouding a rigid plate which is quartered into four sections in connection, each two adjacent sections spaced apart with a slot, the top surface of each section being provided a first key way, and the first key ways positioned on a circle which having a radius corresponding to the distance between the central axis of the coupling member and the key ways; four wrench members each having a working head at a first end, and a second end pivoted to the coupling member between two adjacent sections and received in the slot, the second end being provided with a second key way which constituting a circular key way with the first key ways when the wrench members in stretched position thereof; a cap member releasably attached to the coupling member, being provided with four key elements on the bottom surface thereof for locking the wrench members in stretched position by engaging with the second key ways and releasing the wrench members as the cap member being rotated through a predetermined angle to a position where the key elements engaged with the first key ways
  • a further feature of the invention resides in that an extended bore is provided at the pivoting end of each wrench, member for receiving a pin to pivot on the coupling member and permitting a limited longitudinal movement with respect to the coupling member.
  • a third key way on the upper surface of the cap member and a corresponding third key are separately provided on the bottom surface of the head of the bolt for securing the headed bolt with the cap member.
  • the coupling member 10 is constituted by a rigid block which being quartered into four identical sections connected intergrally by a bottom plate thereunder. Between each two adjacent sections, there is a channel 12 provided for receiving one end of a wrench member 20 which is pivoted to walls of the adjacent section.
  • an extended bore 22 is provided at one end of the wrench member 20 for inserting a pin 30 to pivot the wrench member 20 to the coupling member 10 while permitting a limited movement of the wrench member 20 in the pivoted position, the benefit will described detailedly hereinafter.
  • a cap member 40 as shown in Fig.1 and Fig.3, is formed as a notched circular plate having keys 43 provided on the bottom surface thereof.
  • the notches 41 are distributed corresponding to the channels between each two adjacent sections of the coupling member 10 such that the notches 41 can be aligned with the channels to allow the pivoting end of the wrench member 20 longitudinally extended therein when a folded position is to be taken, as shown in Fig.4.
  • each wrench member 20 The top surface of the coupling member 10 and the pivoting end of each wrench member 20 are respectively provided with key ways 16, 17 which are positioned on a circle, the bottom surface of the cap member 40 is integrally formed with key 43 to engage with the key ways 16, 17.
  • a headed bolt 50 having a threaded end is inserted into the hole 42 on the cap member 40 through an opening 29 formed at the center of the coupling member 10 and the lower end thereof being screwed with a nut 60.
  • the tightness of attachment of the cap member 40 against the coupling member 10 can be adjusted by rotating the nut 60.
  • an additional key 52 is provided on the key way 45 is correspondingly provided on the cap member 40.
  • the wrench members 20 When the wrench is to be used, the wrench members 20 are pivoted to become straight, and then each being pushed forward to align the key ways 17 thereon with the key ways 16 on the coupling member 10. Following loosening the nut 60, the cap member 40 is then rotated to a position where the keys 43 engages with the key ways 17 and meanwhile rotating the nut 60 to tighten the coupling member 10 again thereby secureing the wrench member 20 in its stretched position to be ready for use.
  • the wrench members 20 can be folded to parallel with each other, as shown in Fig.2, by firstly loosening the nut 60, then rotating the cap member 40 through a right angle to a position where the keys 43 engages with the key ways 16 and the notches 41 aligns with the channels 12, the wrench member 20 now can be pivoted down to a folded position.
  • edges of walls of the coupling member 10 which holding the wrench member 20 are preferably rounded to decrease the degree of stress concentrated, therefore, the strength of the coupling member 10 is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
EP83307897A 1983-07-05 1983-12-22 Zusammenlegbarer Kreuzschlüssel Ceased EP0130256A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8318223 1983-07-05
GB08318223A GB2143164B (en) 1983-07-05 1983-07-05 Foldable cross wrench

Publications (2)

Publication Number Publication Date
EP0130256A2 true EP0130256A2 (de) 1985-01-09
EP0130256A3 EP0130256A3 (de) 1985-05-15

Family

ID=10545277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83307897A Ceased EP0130256A3 (de) 1983-07-05 1983-12-22 Zusammenlegbarer Kreuzschlüssel

Country Status (2)

Country Link
EP (1) EP0130256A3 (de)
GB (1) GB2143164B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101407008B (zh) * 2008-11-21 2011-01-19 四川成飞集成科技股份有限公司 精确定位三维激光切割零件的坐标平台

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107234576A (zh) * 2017-08-07 2017-10-10 安徽机电职业技术学院 一种汽修用多规格扳手工具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2409613A (en) * 1945-01-15 1946-10-22 Walter C Brooks Wrench holder
FR1240971A (fr) * 1959-11-18 1960-09-09 Mousqueton porte-clés de serrage à douille à branches mobiles repliables et ouvrantes formant poignée d'entraînement
US3587366A (en) * 1968-02-28 1971-06-28 Horst Klein Cruciform,collapsible tools,such as tire wrenches and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2409613A (en) * 1945-01-15 1946-10-22 Walter C Brooks Wrench holder
FR1240971A (fr) * 1959-11-18 1960-09-09 Mousqueton porte-clés de serrage à douille à branches mobiles repliables et ouvrantes formant poignée d'entraînement
US3587366A (en) * 1968-02-28 1971-06-28 Horst Klein Cruciform,collapsible tools,such as tire wrenches and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101407008B (zh) * 2008-11-21 2011-01-19 四川成飞集成科技股份有限公司 精确定位三维激光切割零件的坐标平台

Also Published As

Publication number Publication date
GB8318223D0 (en) 1983-08-03
GB2143164A (en) 1985-02-06
EP0130256A3 (de) 1985-05-15
GB2143164B (en) 1985-10-30

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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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AK Designated contracting states

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Effective date: 19870924