EP3095559B1 - Systeme dynamometrique - Google Patents

Systeme dynamometrique Download PDF

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Publication number
EP3095559B1
EP3095559B1 EP16001054.2A EP16001054A EP3095559B1 EP 3095559 B1 EP3095559 B1 EP 3095559B1 EP 16001054 A EP16001054 A EP 16001054A EP 3095559 B1 EP3095559 B1 EP 3095559B1
Authority
EP
European Patent Office
Prior art keywords
unit
drive unit
ratchet
drive
latch
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.)
Active
Application number
EP16001054.2A
Other languages
German (de)
English (en)
Other versions
EP3095559A1 (fr
Inventor
Jörg Hohmann
Frank Hohmann
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Individual
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Individual
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Filing date
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Publication of EP3095559A1 publication Critical patent/EP3095559A1/fr
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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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • 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
    • 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
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • 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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles

Definitions

  • the invention relates to a torque wrench system according to the preamble of claim 1.
  • US 2014/0238203 A1 is a torque wrench system with drive unit and ratchet unit known. These are detachably connected to each other, since a ratchet unit is designed to tighten only one nut size. In order to be able to tighten different nut sizes with one and the same drive unit, the ratchet unit can be exchanged for adaptation to the respective nut size.
  • the ratchet unit To connect the drive unit with the ratchet unit, the ratchet unit on two connecting arms, which are pressed in the assembled state of the drive unit and ratchet unit by spring force in openings in the drive unit.
  • the ratchet unit further has, in its rear end region in the output direction, a bolt extending transversely to the output direction, which in the assembled state of the drive unit and ratchet unit is encompassed by a semicircular recess in the drive unit.
  • Drive unit and ratchet unit are releasably rigidly connected together in this way in the assembled state.
  • the drive coupling element and the semicircular recess of the drive unit lie on the center line and extends the center line of the drive unit through the bolt of the ratchet unit.
  • the connecting arms can be moved with a handle on the ratchet unit against the spring force from the openings in the drive unit, whereby the ratchet unit can be removed and replaced by another.
  • connection between the bolts running in the rear end region transversely to the output direction and the semicircular recess embracing it in the drive unit is relatively flexible and deformable.
  • a torque wrench system according to the preamble of claim 1 is made US 2002/0121161 A1 known.
  • both connections between these two units are each formed by a bolt which extends transversely to the output direction and inserted into a semicircular recess or is encompassed by this.
  • 6,330,842 B1 rod-shaped torque wrench systems are known in which an elongate ratchet unit has at its front end a ratchet and is releasably connected at its rear end with a likewise elongated drive unit by means of a locking system.
  • the invention has for its object to improve a generic torque wrench system so that in a longitudinally extending drive unit seat for the ratchet unit, the connection between these two units can transmit higher forces and is extremely resistant to deformation and still the drive unit of the ratchet unit easily and can be solved quickly.
  • the drive unit has a supporting wedge on its extending along the driven direction limiting surface extending along the output direction and the wedge angle opens perpendicular to this boundary surface against the output direction to the rear and the ratchet unit has in its seat base a corresponding recess for receiving the support wedge, wherein the support wedge on its rear side has a support surface and the recess at its rear end a contact surface on which in the assembled state of the drive unit and ratchet unit, the support surface of the support wedge is applied.
  • the permissible stresses or the transferable forces are thereby significantly increased.
  • the risk of deformations occurring during operation is significantly reduced, since the bending deformations occurring even at relatively low bending loads are avoided.
  • the design freedom is significantly increased. Design constraints, such as requiring both the drive coupling and ratcheting unit drive coupling elements and the rear support structure between the drive unit and the ratcheting unit to be centered on the drive unit, as required in the prior art, are no longer present.
  • the drive unit and the ratchet unit can be solved very quickly and easily from each other.
  • the drive unit has at least one latch which is movable from an unlocked position into a locking position and back, and at least one actuating element, with which the latch is movable from one to the other position, wherein the ratchet unit has a latch receiving, with the latch is in locking position in the assembled state of the drive unit and ratchet unit in locking engagement, can be held with only one hand, both the drive unit and the latch by means of the actuating element for unlocking and the drive unit are then removed.
  • Ratchet unit must still be held in the separation of the drive unit for other reasons, the retention of the ratchet unit can be done under purely ergonomic aspects, without any constraints due to the dissolution process.
  • the drive unit has a front in the drive direction limiting surface and the ratchet unit a seat for receiving the drive unit, which has an end face on which the drive unit rests with its front boundary surface in the assembled state of the drive unit and ratchet unit, and protrudes at least one bolt in the locking position from the front boundary surface of the drive unit and the bolt receptacle is a recess in the seat-end face of the ratchet unit.
  • the at least one latch in the unlocked position is retractable so far that it extends maximally to the front boundary surface of the drive unit.
  • the drive unit can be easily separated from the ratchet unit by the drive unit along the front boundary surface of the seat of the ratchet unit is lifted or-pushed.
  • each bolt is spring-biased in its locking position and movable by means of the locking actuator against the spring bias of the locking position in its unlocked position.
  • each bolt takes the bolt during assembly of the drive unit and ratchet unit due to the spring bias of their own locking position so that when assembling the bolt must not be manually operated.
  • the first drive coupling element protrudes from the front boundary surface of the drive unit and can be brought into drive engagement with the second drive coupling element through an opening in the seat end face of the ratchet unit.
  • the seat of the ratchet unit thus also serves as a guide, with which the drive coupling element of the drive unit is guided to the drive coupling element of the ratchet unit and brought into driving engagement with this.
  • both the first drive coupling element and the latch protrude from the front boundary surface of the drive unit and the second drive coupling element and the latch receptacles are arranged in the seat end face or can be reached through it, it is ensured that both the drive Coupling elements and bolt and bolt receptacles are brought together in engagement when the front boundary surface of the drive unit rests against the seat-end face of the ratchet unit.
  • a respective latch and on both sides of the second drive coupling element respectively associated latch receptacles are arranged on both sides of the first drive coupling element.
  • a bending load of the drive coupling elements during operation parallel to a connecting straight line through the bolt is thus largely excluded.
  • a bending load is completely excluded.
  • FIGS. 1 to 5 illustrated embodiment of a torque wrench system 1 comprises a drive unit 2 and a ratchet unit 3, which are detachably assembled to a screw unit and are releasably rigidly connected together in the assembled state.
  • the drive unit 2 has a drive cylinder 4 and this on its output side, a first drive coupling element 5.
  • the drive cylinder 4 and the first drive coupling element 5 protrude from a front boundary surface 6 of the drive unit 2 in the output direction. Its rear boundary surface 6a is formed in part by the cover 4a of the drive cylinder 4.
  • an actuating element 9 is mounted in the form of an actuating lever, with which the two bars 7 are movable back from the locking position against the spring bias in an unlocked position in which they are within the drive unit 2 maximum extend to the front boundary surface 6.
  • the drive unit 2 is a hydraulic drive unit.
  • the hydraulic connection 10 is formed on the upper side 8 of the drive unit 2.
  • a cover 11 which covers a part 12 of the upper side 13 of the ratchet unit 3 in the assembled state of the drive unit 2 and ratchet unit 3.
  • the drive unit 2 has at its in the figures lower side 14, which is referred to below as the lower boundary surface, a support wedge 15 which extends along the output direction with a wedge angle a, perpendicular to the lower boundary surface 14 against the output direction to the rear opens.
  • the size of the wedge angle ⁇ is preferably in the range of 5 ° to 45.
  • the support wedge 15 On its rear side 16, the support wedge 15 has a projection 17 extending to the rear, which is designed to fit into a corresponding recess (not shown) in the ratchet unit 3 so that the outer wall of the projection 17 rests against the inner wall of the recess.
  • the ratchet unit 3 has a ratchet 18 which is designed to bear on the outer surfaces of a given nut size. For each nut size therefore a separate ratchet unit 3 is provided.
  • the ratchet unit 3 has a seat 19 for receiving the drive unit 2.
  • the seat 19 is L-shaped, wherein the short leg of the L a seat-end face 20 and the long leg of the L forms a seat base 21.
  • an opening 22 is formed, through which the first drive coupling element 5 of the drive unit 2 can be brought into drive engagement with a (not shown) second drive coupling element of the ratchet unit 3, when in the assembled state of the drive unit 2 and Ratchet unit 3, the drive unit 2 rests with its front boundary surface 6 on the seat end face 20 of the ratchet unit 3.
  • the second drive coupling element is also in driving engagement with the ratchet 18, so that in the assembled state of the drive unit 2 and ratchet unit 3 with the drive cylinder 4 of the drive unit 2 via the first and second drive coupling element, the ratchet 18 of the ratchet unit 3 can be driven.
  • two recesses 23 are formed in the seat end face 20, which form latch receptacles and into which the two at the front Boundary surface 6 of the drive unit 2 arranged latch 7 extend when the drive unit 2 and the ratchet unit 3 are assembled, d. H. when the front boundary surface 6 of the drive unit 2 rests against the seat end face 20 of the ratchet unit 3.
  • a wedge-shaped recess 24 is formed, which is designed to receive the support wedge 15 of the drive unit 2.
  • a recess is formed, which is designed to receive the projection 17 on the back 16 of the support wedge 15.
  • the drive unit 2 is rotated with the protrusion 17 located in the recess to the ratchet unit 3 formed by these two, so that the front and the lower boundary surface 6, 14 of the drive unit 2 on the seat end face 20 and on the seat base 21 of the ratchet unit 3 come to rest and thereby the first drive coupling element 5 comes with the second drive coupling element through the opening 22 in the seat end face 20 into driving engagement and the two bars 7 of the drive unit 2 in the two associated latch receptacles 23 of Ratchet unit 3 are pressed by the spring preload and thus occupy their locking position in the bolt receptacles 23 ( FIGS. 2 to 4 ).
  • the operating lever 9 on the upper side 8 of the drive unit 2 can be actuated with a finger 25 of the hand 26 holding the drive unit 2 ( FIG. 5 ), so that the bolt 7 move back against its spring bias from its locking position to its unlocked position in which they are located within the drive unit 2.
  • the drive unit 2 can then be removed from the ratchet unit 3, for example in the direction of the arrow 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Lock And Its Accessories (AREA)

Claims (7)

  1. Système de clé dynamométrique comprenant une unité d'entraînement (2) et une unité à cliquet (3) pouvant être assemblées de manière détachable pour donner une unité de vissage, dans lequel
    l'unité d'entraînement (2) et l'unité à cliquet (3) sont reliées de manière amovible et rigide l'une à l'autre dans l'état assemblé,
    dans lequel
    l'unité d'entraînement (2) comprend
    - un premier élément de couplage d'entraînement (5),
    - au moins un verrou (7) qui est mobile depuis une position de déverrouillage dans laquelle l'unité d'entraînement (2) et l'unité à cliquet (3) sont détachables l'une de l'autre, jusque dans une position de verrouillage dans laquelle l'unité d'entraînement (2) et l'unité à cliquet (3) sont reliées de façon rigide l'une à l'autre dans l'état assemblé, et inversement, ainsi que
    - au moins un élément d'actionnement (9) permettant de déplacer ledit au moins un verrou (7) de l'une des positions dans l'autre,
    et l'unité à cliquet (3) comprend
    - un cliquet (18),
    - un second élément de couplage d'entraînement qui est en engagement d'entraînement avec le cliquet (18) et, dans l'état assemblé de l'unité d'entraînement (2) et de l'unité à cliquet (3), également avec le premier élément de couplage d'entraînement (5), pour entraîner le cliquet (18), ainsi que
    - un logement de verrou (23) qui est en engagement de verrouillage avec le verrou (7) dans sa position de verrouillage pour la liaison rigide de l'unité d'entraînement (2) à l'unité à cliquet (3), dans leur état assemblé,
    dans lequel
    l'unité d'entraînement (2) présente une surface de délimitation (14) et l'unité à cliquet (3) présente une surface de base (21) dans son siège (19) pour l'unité d'entraînement (2), qui s'étendent toutes les deux le long de la direction menée et qui, dans l'état assemblé de l'unité d'entraînement (2) et de l'unité à cliquet (3), s'appuient l'une contre l'autre,
    caractérisé en ce que
    l'unité d'entraînement (2) présente un coin de soutien (15) sur sa surface de délimitation (14) s'étendant le long de la direction menée, coin qui s'étend le long de la direction menée et dont l'angle de coin (α) s'ouvre vers l'arrière perpendiculairement à cette surface de délimitation (14) en sens opposé à la direction menée, et en ce que
    l'unité à cliquet (3) présente dans sa surface de base de siège (21) une cavité correspondante (24) pour recevoir le coin de soutien (15),
    le coin de soutien (15) présentant sur son côté arrière (16) une surface d'appui et la cavité (24) présentant à son extrémité arrière une surface d'appui sur laquelle, dans l'état assemblé de l'unité d'entraînement (2) et de l'unité à cliquet (3), prend appui la surface d'appui (16) du coin de soutien (15).
  2. Système de clé dynamométrique selon la revendication 1, caractérisé en ce que l'unité d'entraînement (2) présente une surface de délimitation (6) avant en direction menée, et l'unité à cliquet (3) présente un siège (19) pour recevoir l'unité d'entraînement (2), ledit siège présentant une surface frontale (20) contre laquelle prend appui l'unité d'entraînement (2) par sa surface de délimitation avant (6), dans l'état assemblée de l'unité d'entraînement (2) et de l'unité à cliquet (3), et en ce que
    dans la position de verrouillage, ledit au moins un verrou (7) fait saillie de la surface de délimitation avant (6) de l'unité d'entraînement (2), et le logement de verrou (23) est une cavité dans la surface frontale de siège (20) de l'unité à cliquet (3).
  3. Système de clé dynamométrique selon la revendication 2, caractérisé en ce que dans la position de déverrouillage ledit au moins un verrou (7) peut être retiré aussi loin qu'il s'étend au maximum jusqu'à la surface de délimitation avant (6) de l'unité d'entraînement (2).
  4. Système de clé dynamométrique selon l'une des revendications précédentes, caractérisé en ce que chaque verrou (7) est élastiquement précontraint dans sa position de verrouillage et est mobile à l'encontre de la précontrainte élastique depuis la position de verrouillage jusque dans sa position de déverrouillage, au moyen de l'élément d'actionnement de verrou (9).
  5. Système de clé dynamométrique selon la revendication 2 ou 3, caractérisé en ce que le premier élément de couplage d'entraînement (5) fait saillie de la surface de délimitation avant (6) de l'unité d'entraînement (2) et peut être amené en engagement d'entraînement avec le second élément de couplage d'entraînement à travers une ouverture (22) dans la surface frontale de siège (20) de l'unité à cliquet (3).
  6. Système de clé dynamométrique selon la revendication 5, caractérisé en ce qu'un verrou respectif (7) est agencé de part et d'autre du premier élément de couplage d'entraînement (5), et des logements de verrou respectifs associés (23) sont agencés de part et d'autre du second élément de couplage d'entraînement.
  7. Système de clé dynamométrique selon l'une des revendications précédentes, caractérisé en ce qu'au moins une saillie (17) s'étendant vers l'arrière fait saillie de la surface d'appui (16) du coin de soutien (15), et un évidement est ménagé dans la surface d'appui de la cavité (24) qui, dans l'état assemblé de l'unité de l'unité d'entraînement (2) et de l'unité à cliquet (3), reçoit ladite au moins une saillie (17) du coin de soutien (15), la paroi extérieure de la saillie (17) prenant appui contre la paroi intérieure de l'évidement.
EP16001054.2A 2015-05-20 2016-05-10 Systeme dynamometrique Active EP3095559B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015006564.5A DE102015006564A1 (de) 2015-05-20 2015-05-20 Drehmomentschrauber-System

Publications (2)

Publication Number Publication Date
EP3095559A1 EP3095559A1 (fr) 2016-11-23
EP3095559B1 true EP3095559B1 (fr) 2018-09-26

Family

ID=55966975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16001054.2A Active EP3095559B1 (fr) 2015-05-20 2016-05-10 Systeme dynamometrique

Country Status (7)

Country Link
US (1) US10099352B2 (fr)
EP (1) EP3095559B1 (fr)
JP (1) JP6235071B2 (fr)
KR (1) KR101843429B1 (fr)
DE (1) DE102015006564A1 (fr)
DK (1) DK3095559T3 (fr)
ES (1) ES2701249T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113646164B (zh) 2019-04-02 2023-06-06 日本制铁株式会社 金属-碳纤维增强树脂材料复合体

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717508Y2 (fr) * 1979-07-30 1982-04-12
JPS5622777A (en) 1979-08-01 1981-03-03 Microbial Chem Res Found Novel antibiotic "bactobolin" and its preparation
JPH03117567A (ja) * 1989-09-29 1991-05-20 Paul Heinz Wagner 油圧パワーレンチ
DE29516060U1 (de) * 1995-10-10 1995-12-07 Wagner Paul Heinz Kraftschrauber
GB0014416D0 (en) * 2000-06-13 2000-08-09 More Nicholas Hydraulic torque wrench
US6330842B1 (en) * 2000-06-26 2001-12-18 Kevin Brun Compact head power driven ratchet tool
US20020121161A1 (en) * 2001-03-05 2002-09-05 Peter Koppenhoefer Fluid operated tool for tightening and loosening threaded connectors
DE10236586B4 (de) * 2002-08-08 2014-12-04 Wagner Vermögensverwaltungs-GmbH & Co. KG Kraftschrauber
US6925911B1 (en) * 2004-02-02 2005-08-09 Unex Corporation Fluid-operated power tool
WO2011100258A1 (fr) * 2010-02-09 2011-08-18 Titan Technologies International, Inc. Couple hydraulique pour espace libre réduit
US20120024556A1 (en) * 2010-07-27 2012-02-02 Shiqi Zhu Three-in-one air tool
US9492912B2 (en) 2013-02-22 2016-11-15 Steven Spirer Hydraulic torque wrench system
CN203726402U (zh) * 2014-03-19 2014-07-23 杜德机械科技(上海)有限公司 液压扳手

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Also Published As

Publication number Publication date
KR101843429B1 (ko) 2018-04-02
US10099352B2 (en) 2018-10-16
JP2016215367A (ja) 2016-12-22
US20160339569A1 (en) 2016-11-24
KR20160137409A (ko) 2016-11-30
ES2701249T3 (es) 2019-02-21
DE102015006564A1 (de) 2016-11-24
DK3095559T3 (en) 2019-01-21
JP6235071B2 (ja) 2017-11-22
EP3095559A1 (fr) 2016-11-23

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