EP0672503B1 - Einstellbarer Schraubenschlüssel - Google Patents

Einstellbarer Schraubenschlüssel Download PDF

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Publication number
EP0672503B1
EP0672503B1 EP94301805A EP94301805A EP0672503B1 EP 0672503 B1 EP0672503 B1 EP 0672503B1 EP 94301805 A EP94301805 A EP 94301805A EP 94301805 A EP94301805 A EP 94301805A EP 0672503 B1 EP0672503 B1 EP 0672503B1
Authority
EP
European Patent Office
Prior art keywords
adjustment bolt
head
hole
handle
receiving 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.)
Expired - Lifetime
Application number
EP94301805A
Other languages
English (en)
French (fr)
Other versions
EP0672503A1 (de
Inventor
Jong-Shing 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
Priority to EP94301805A priority Critical patent/EP0672503B1/de
Priority to AT94301805T priority patent/ATE166605T1/de
Priority to DE69410591T priority patent/DE69410591T2/de
Publication of EP0672503A1 publication Critical patent/EP0672503A1/de
Application granted granted Critical
Publication of EP0672503B1 publication Critical patent/EP0672503B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
    • B25B13/16—Spanners; Wrenches with adjustable jaws the jaws being slidable by screw or nut

Definitions

  • the present invention relates to an adjustable wrench.
  • the conventional adjustable wrench is generally provided with a fixed jaw and a movable jaw, which form together a clamping mouth for fastening or loosening a fastener such as a hexagonal nut or bolt head.
  • a prior art adjustable wrench as described above is defective in design in that it often fails to hold a nut or bolt head firmly at the time when the nut or the bolt head is twisted strenuously, and that the movable jaw is vulnerable to cracking.
  • an adjustable double-ended box wrench including a wrench body defining large and small box wrenches, an adjustable jaw assembly including an elongated adjusting member and a rotatable adjuster that moves jaw end surfaces to adjust the sizes of the wrenches, and a cover plate that is secured to the wrench body to retain the adjustable jaw assembly.
  • Each of the large and small box wrenches includes a pair of associated diverging portions and a pair of converging portions as well as an associated connecting portion that connect the associated engagement portions.
  • Each of the connecting portions preferably has a connecting wall with curved ends that are tangential to associated engagement surfaces in order to prevent stress concentration during use.
  • the rotatable adjuster is an adjusting nut that receives an externally threaded portion of the associated adjusting member to provide the adjustment. In another embodiment of the wrench, the rotatable adjuster is an adjusting screw that receives an internally threaded portion of the associated adjusting member to provide the adjustment.
  • an adjustable wrench comprising:
  • FIG. 1 shows a perspective view of a preferred embodiment of the present invention.
  • FIG. 2 shows a sectional view of a portion taken along the line 2-2 as shown in FIG. 1.
  • FIG. 3 shows a sectional view of a portion taken along the line 3-3 as shown in FIG. 1.
  • FIG. 4 shows a top plan view of the preferred embodiment of the present invention.
  • FIG. 5 is a top plan view of the preferred embodiment in use under a first condition, according to the present invention.
  • FIG. 6 shows a top plan view of the preferred embodiment in use under a second condition, according to the present invention.
  • an adjustable wrench 10 embodied in the present invention is shown to comprise a handle 12 and a rectangular head 14 formed integrally at one end of the longitudinal axis of the handle 12. Located at another end of the longitudinal axis of the handle 12 is a hang hole 16.
  • the head 14 has an upper surface 18 and a lower surface 20, which are parallel to each other. The distance between the upper and the lower surfaces 18 and 20 is greater than the thickness of the handle 12.
  • the longitudinal axis of the handle 12 has one end that is connected with one end of the longitudinal axis of the head 14 so as to form a shoulder 22 at the junction between the handle 12 and the head 14.
  • the handle 12 is slanted upwards at a predetermined angle, such as an angle of 15 degrees, from the junction between the handle 12 and the head 14 for facilitating the wrenching operation.
  • the head 14 is provided with a fastener receiving hole 24 for receiving a hexagonal nut or bolt head, the receiving hole 24 having two fixed clamping surfaces 26 and 28 which are opposite in location to each other and are located at one end farther from the handle 12. These two fixed clamping surfaces 26 and 28 are located on opposite sides of the longitudinal axis X-X' of the head 14 such that the two fixed clamping surfaces 26 and 28 are equidistant from the axis X-X'.
  • the two imaginary planes, as shown by the dotted lines in FIG. 4, containing the two fixed clamping surfaces 26 and 28 meet at an angle of 60 degrees.
  • a top surface 30 is provided perpendicular to the longitudinal axis X-X' of the head 14. The top surface 30 is respectively connected with one end of each of the two fixed clamping surfaces 26 and 28, with another end of each of the two fixed clamping surfaces 26 and 28 being connected respectively with two inner surfaces 32 and 34.
  • the head 14 is provided with a through hole 36 which is located between the surface of the receiving hole 24 and the shoulder 22 and is parallel to or coaxial with the longitudinal axis X-X'. Located between the end of the receiving hole 24 near the handle 12 and the handle 12 is a receiving hole 38 in communication with the through hole 36.
  • a rotation knob 40 is disposed in the receiving hole 38.
  • An adjustment bolt 42 is disposed through the through hole 36 and the ring hole 44 of the rotation knob 40 such that one end of the adjustment bolt 42 is received in the receiving hole 24.
  • the adjustment bolt 42 is provided therein axially with a groove 46.
  • a locating pin 48 is fastened to a partition wall 50 located between the receiving hole 24 and the receiving hole 38, with the inner end of the locating pin 48 being received in the through hole 36 and being retained in the groove 46.
  • the ring hole 44 of the rotation knob 40 is provided with threads engageable with threads of the adjustment bolt 42.
  • the adjustment bolt 42 is caused to move linearly in the direction of the axis thereof. It is suggested that the dimension of the rotation knob 40 is such that the surface of the rotation knob 40 is higher than the upper surface 18 of the head 14 when the rotation knob 40 is disposed in the receiving hole 38.
  • Such an arrangement of the rotation knob 40 as described above is intended to facilitate the turning of the rotation knob 40.
  • the adjustment bolt 42 has a penetration end 54 located in the receiving hole 24 and provided with a flat end surface 56.
  • An arresting block 58 has a through hole 60 in which the penetration end 54 is held.
  • a surface 62 of the arresting block 58 is coplanar with the flat end surface 56.
  • the surface 62 and the flat end surface 56 form a movable clamping surface 64 contained in an imaginary plane which meets the two imaginary planes containing the two fixed clamping surfaces 28 and 26 at an angle of 60 degrees, as shown by the dotted lines in FIG. 4.
  • the receiving hole 24 is composed of two fixed clamping surfaces 26 and 28, and the movable clamping surface 64, which are corresponding respectively in location to three noncontiguous sides of a hexagonal nut or bolt head and which form together a clamping space adjustable in dimension to accommodate a number of hexagonal nuts or bolt heads of various dimensions.
  • the penetration end 54 of the arresting block 58 serves to enlarge the area of the movable clamping surface 64.
  • the space of the fitting hole 24 is enlarged by a recess 66 located at the end adjacent to the handle 12 and dimensioned to accommodate therein the arresting block 58.
  • the receiving hole 24 is first fitted over the nut 70 or the bolt head 80 such that the fixed clamping surfaces 26 and 28 of the wrench 10 are respectively in contact with the opposite sides 72 and 74 of the nut 70 or with the oposite sides 82 and 84 of the bolt head 80. Thereafter, the rotation knob 40 is turned until such time when the movable clamping surface 64 of the adjustment bolt 42 of the wrench 10 is intimately in contact with a lower side 76 or 86 of the hexagonal nut 70 or bolt head 80. As a result, the nut 70 or the bolt head 80 can be turned in the direction of a wrenching movement of the handle 12.
  • the adjustable wrench 10 of the present invention has inherent advantages over the prior art adjustable wrench.
  • the adjustable wrench 10 of the present invention is provided with a rotation knob 40 which makes the job of adjusting the size of the clamping space relatively easy.
  • the clamping space of the adjustable wrench 10 of the present invention is formed by three clamping surfaces which meet respectively at an angle of 60 degrees. As a result, a hexagonal nut or bolt head can be held securely in the clamping space of the adjustable wrench 10 of the present invention.
  • the torsion of a wrenching movement of the handle 12 of the adjustable wrench 10 of the present invention is equally exerted on the three clamping surfaces, which are therefore less vulnerable to a crack caused by a strenuous twist of the hexagonal nut or bolt head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Valve Device For Special Equipments (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Claims (4)

  1. Einstellbarer Schraubenschlüssel (10), umfassend:
    einen Handgriff (12);
    einen Kopf (14); der an einem Ende der Längsachse des Handgriffs (12) in einem Stück ausgebildet ist und eine obere Fläche (18), eine zur oberen Fläche (18) parallele untere Fläche (20) und ein Befestigungsmittel-Aufnahmeloch (24) aufweist, das durch den Kopf (14) von der oberen Fläche (18) zur unteren Fläche (20) verläuft, wobei das Befestigungsmittel-Aufnahmeloch (24) zwei feste Klemmflächen (26, 28) hat, die senkrecht zu den oberen und unteren Flächen (18, 20) stehen und zu einer Symmetrieebene symmetrisch sind, die die Längsachse des Schraubenschlüssels (10) enthält, wobei die beiden festen Klemmflächen (26, 28) in zwei gedachten Ebenen enthalten sind, die sich in entgegengesetzter Richtung zum Handgriff (12) erstrecken und unter einem Winkel von 60 Grad aufeinander treffen; und
    eine Einstellschraube (42), die so im Kopf (14) montiert ist, daß sich die Einstellschraube (42) nicht drehen kann, sich jedoch entlang ihrer Achse bewegen kann, wobei die Achse in der Symmetrieebene enthalten ist, und so, daß ein Eindringende (54) der Einstellschraube (42) in das Befestigungsmittel-Aufnahmeloch (24) hineinragt, wobei das Eindringende (54) mit einer beweglichen Klemmfläche (64) versehen ist, die senkrecht auf den oberen und unteren Flächen (18, 20) des Kopfs (14) steht, so daß die bewegliche Klemmfläche (64) in einer gedachten Ebene enthalten ist, die senkrecht zur Symmetrieebene ist und die jede der gedachten Ebenen schneidet, die die beiden festen Klemmflächen (26, 28) unter einem Winkel von 60 Grad enthalten,
       wobei der Kopf (14) zudem mit einem Drehknopf (40) versehen ist, der in einem Knopfaufnahmeloch (38) im Kopf (14) aufgenommen ist, und der Drehknopf (40) eine mittige Bohrung (44) aufweist, durch die die Einstellschraube (42) verläuft, und die mittige Bohrung (44) mit einem Gewinde versehen ist, das in ein Gewinde auf der Einstellschraube (42) eingreift und damit das axiale Bewegen der Einstellschraube (42) durch Drehen des Drehknopfs (40) ermöglicht,
       dadurch gekennzeichnet, daß das Eindringende (54) der Einstellschraube (42) eine ebene Endfläche (56) aufweist, die senkrecht zur Achse der Einstellschraube (42) ist und mit einem daran befestigten Halteblock (58) versehen ist, wobei der Halteblock (58) eine Endfläche (62) aufweist, die koplanar zur ebenen Endfläche (56) des Eindringendes (54) der Einstellschraube (42) ist, damit die Endfläche (62) mit der ebenen Endfläche (56) zusammenwirkt und die bewegliche Klemmfläche (64) bildet;
    und dadurch, daß das Befestigungsmittel-Aufnahmeloch (24) mit einer Aussparung (66) versehen ist, die so bemessen ist, daß sie in sich den Halteblock (58) aufnehmen kann, und die sich in demjenigen Ende des Befestigungsmittel-Aufnahmelochs (24) befindet, das dem Handgriff (12) am nächsten liegt;
    und dadurch, daß die Einstellschraube (42) mit einer Nut (46) versehen ist, die sich in Richtung der Achse der Einstellschraube (42) erstreckt und in sich ein Ende eines am Kopf (14) befestigten Paßstifts (48) aufnimmt, so daß ein Ende des Paßstifts in die Nut (46) eingesetzt ist und nur eine geradlinige und axiale Bewegung der Einstellschraube (42) erlaubt, wenn der Drehknopf (40) gedreht wird.
  2. Einstellbarer Schraubenschlüssel (10) nach Anspruch 1, wobei der Handgriff (12) unter einem vorbestimmten Winkel relativ zu den oberen und unteren Flächen (18, 20) des Kopfs (14) verläuft.
  3. Einstellbarer Schraubenschlüssel (10) nach Anspruch 2, wobei die oberen und unteren Flächen (18, 20) des Kopfs (14) einen Abstand zueinander haben, der größer ist als der Abstand zwischen der oberen Fläche und der unteren Fläche des Handgriffs (12), und der Handgriff (12) und der Kopf (14) an einer Schulter (22) zusammentreffen, und der Kopf (14) mit einem Durchgangsloch (36) versehen ist, das zwischen der Schulter (22) und einer Fläche des Befestigungsmittel-Aufnahmelochs (24) angeordnet ist und mit dem Knopfaufnahmeloch (38) verbunden ist, so daß die Einstellschraube (42) in dem Durchgangsloch (36) angeordnet ist und man die Einstellschraube (42) geradlinig in Richtung der Achse des Durchgangslochs (36) bewegen kann.
  4. Einstellbarer Schraubenschlüssel (10) nach Anspruch 3, worin die beiden festen Klemmflächen (26, 28) jeweils so an entgegengesetzten Seiten der Symmetrieebene angeordnet sind, daß die beiden festen Klemmflächen (26, 28) gleichen Abstand zur Längsachse haben, und worin die Achse des Durchgangslochs (36) parallel zur Längsachse des Kopfs (14) ist.
EP94301805A 1994-03-14 1994-03-14 Einstellbarer Schraubenschlüssel Expired - Lifetime EP0672503B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP94301805A EP0672503B1 (de) 1994-03-14 1994-03-14 Einstellbarer Schraubenschlüssel
AT94301805T ATE166605T1 (de) 1994-03-14 1994-03-14 Einstellbarer schraubenschlüssel
DE69410591T DE69410591T2 (de) 1994-03-14 1994-03-14 Einstellbarer Schraubenschlüssel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94301805A EP0672503B1 (de) 1994-03-14 1994-03-14 Einstellbarer Schraubenschlüssel

Publications (2)

Publication Number Publication Date
EP0672503A1 EP0672503A1 (de) 1995-09-20
EP0672503B1 true EP0672503B1 (de) 1998-05-27

Family

ID=8217613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94301805A Expired - Lifetime EP0672503B1 (de) 1994-03-14 1994-03-14 Einstellbarer Schraubenschlüssel

Country Status (3)

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EP (1) EP0672503B1 (de)
AT (1) ATE166605T1 (de)
DE (1) DE69410591T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2481962A (en) * 2010-05-13 2012-01-18 Graham Downey Nut extractor
US20110277598A1 (en) * 2010-05-17 2011-11-17 Ee Jig Kim Adjustable socket wrench
CN106625360A (zh) * 2016-11-30 2017-05-10 南京海獭软件有限责任公司 一种可调节的扳手
CN109551410A (zh) * 2018-12-18 2019-04-02 杭州巨星科技股份有限公司 可调夹持结构及扳手套筒
CN113146552A (zh) * 2021-04-25 2021-07-23 中国人民解放军空军工程大学航空机务士官学校 一种钢索接头编结夹具

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4488461A (en) * 1981-11-20 1984-12-18 Encor, Limited Adjustable wrench
US4520699A (en) * 1983-05-02 1985-06-04 Miodrag Jeremic Adjustable wrench
US4787275A (en) * 1987-03-20 1988-11-29 Colvin David S Adjustable double-ended box wrench
DE8804852U1 (de) * 1988-03-07 1988-06-01 Lee, Juang-Jeng, Taipeh/T'ai-pei Als Schraubenschlüssel verwendbare Vorrichtung zum Sprengen einer Schraubenmutter
US4967613A (en) * 1989-07-11 1990-11-06 Sde Investments, Inc. Reversible adjustable wrench

Also Published As

Publication number Publication date
DE69410591D1 (de) 1998-07-02
DE69410591T2 (de) 1998-09-24
EP0672503A1 (de) 1995-09-20
ATE166605T1 (de) 1998-06-15

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