EP3344419B1 - Visseuse dynamométrique - Google Patents

Visseuse dynamométrique Download PDF

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Publication number
EP3344419B1
EP3344419B1 EP16766848.2A EP16766848A EP3344419B1 EP 3344419 B1 EP3344419 B1 EP 3344419B1 EP 16766848 A EP16766848 A EP 16766848A EP 3344419 B1 EP3344419 B1 EP 3344419B1
Authority
EP
European Patent Office
Prior art keywords
ratchet
fastening
free space
torque wrench
side walls
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
EP16766848.2A
Other languages
German (de)
English (en)
Other versions
EP3344419A1 (fr
Inventor
Jörg Hohmann
Frank Hohmann
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
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Individual
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Publication of EP3344419A1 publication Critical patent/EP3344419A1/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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0078—Reaction arms

Definitions

  • the invention relates to torque wrenches with a ratchet and a drive for the ratchet, the ratchet having a ratchet housing with two opposite side walls which are at a predetermined distance from one another and are connected to one another, a through opening running transversely through the two side walls, which is designed to accommodate a ratchet rotary body, the axis of rotation of which runs parallel to the axis of the through-opening, and with fastening means for fastening a support device to the torque wrench, with which the torque wrench can be supported perpendicularly to the axis of rotation of the ratchet rotary body.
  • a known torque wrench of this type can be assembled from a ratchet unit, which has a ratchet with a ratchet housing, and a drive unit, which has the drive for the ratchet.
  • the drive unit has an extension which, when the ratchet unit and drive unit are in the assembled state, extends into the ratchet housing between its side walls.
  • the extension and the side walls each have a bore which is aligned with one another when the ratchet unit and the drive unit are in the assembled state.
  • These holes are used to attach various support devices to the torque wrench. With these support devices, the torque wrench is supported perpendicularly to the axis of rotation of the ratchet rotating body when torque is applied, for example on the next screw or on the flange.
  • the support devices have two legs which are parallel to one another and are arranged at a distance from one another and which are placed against the side walls of the torque wrench on both sides. Each leg has a bore which is aligned with one another and also with said bores when fitted to the torque wrench.
  • a bolt is then passed from one side through the hole in one leg of the support device, then through the holes in the ratchet unit and in the drive unit and finally through the hole in the other leg of the support device and then into position secured.
  • the invention is based on the object of improving a generic torque wrench in such a way that the fastening option for a supporting device is easier to handle and at the same time can be subjected to higher loads.
  • a support device can be fastened to a torque wrench with little space and in a very simple manner and can also be detached from the torque wrench again, at the same time reducing the production costs for the torque wrench and the fastening means for the support device to be applied with the supporting forces or - moments can be dimensioned smaller.
  • the fastening means have a free space between the side walls, which is accessible from outside the torque wrench and is designed to accommodate a fastening section of the support device, a fastening option is created for the support device into which a fastening section of the support device can be inserted easily and securely.
  • the support device is attached exclusively to the ratchet housing, i. H. without including the drive unit. In the manufacture of the torque wrench, there are therefore no tolerance influences or fitting inaccuracies from elements attached to the drive unit for fastening the support device.
  • the attachment means also includes means for attaching the attachment portion of the support means in the clearance, e.g. H.
  • the fastening takes place in the clearance, so that, for example, a fastening bolt running transversely to the side walls need only extend between the outer walls of the side walls and its shearing surfaces are close to the inner walls of the side walls. Due to the reduced length of the fastening bolt and the reduced distance between its shearing surfaces, the bending stress on the fastening bolt is reduced and its capacity to absorb shear forces is increased.
  • the outer peripheral edges of the two opposite side walls are connected to one another by means of an edge wall and the access opening to the free space is arranged in this edge wall.
  • These measures create a guide for the attachment section of the support device.
  • the access opening is formed by mutually opposite sections of the side walls or by walls parallel to the side walls and mutually opposite sections of the peripheral wall in the circumferential direction of the edge wall Edge wall formed or limited.
  • these delimiting sections of the access opening form a guide for the fastening section, by means of which the fastening section is guided into the free space.
  • the free space in a plane perpendicular to the axis of the through-opening, has a triangular cross-section which tapers into the ratchet housing.
  • the fastening section of the support device can be guided into the free space even more easily.
  • the free space can also have any other cross-sectional shape that is suitable for introducing and fastening the fastening section of the support device. So are e.g. B. other configurations of the taper of the cross section possible, for example a stepped taper. It is also conceivable that the cross section does not taper but is rectangular.
  • the torque wrench has a bore running transversely through the two side walls and the free space, which bore is designed to receive a bolt for fastening the fastening section of the support device. This ensures that the fastening section can be fastened securely, quickly and cost-effectively in the free space.
  • the fastening section of the support device has a bore which is also designed to receive the bolt and which is aligned with the bores in the side walls of the ratchet housing when either the fastening section is in contact with the walls in the free space or the support device is in contact with the edge wall of the ratchet housing.
  • a torque wrench according to the invention can be formed from a ratchet unit, which has the ratchet with a ratchet housing, and a drive unit, which has the drive for the ratchet, the ratchet unit and the drive unit being releasably combinable to form a screwdriver unit.
  • a ratchet unit which has the ratchet with a ratchet housing
  • a drive unit which has the drive for the ratchet
  • the ratchet unit and the drive unit being releasably combinable to form a screwdriver unit.
  • a torque wrench 1 has a hydraulic drive unit 2 and a ratchet unit 3, which are releasably assembled to form a screwdriver unit and are releasably rigidly connected to each other in the assembled state.
  • the torque wrench 1 can also be made in one piece, i. H. the ratchet 3 and the drive 2 for the ratchet 3 cannot be detachably connected to one another.
  • the ratchet has a ratchet housing 4 with two opposite side walls 5 which run parallel to one another at a predetermined distance and are connected to one another.
  • a through-opening 6 runs transversely through the two side walls 5, in which a ratchet rotary body 7 is accommodated, whose axis of rotation 8 runs parallel to the axis 9 of the through-opening 6.
  • the rotary ratchet body 7 in turn has a hexagonal through-opening 10 for receiving a hexagonal nut, for example, in the exemplary embodiment shown.
  • the outer peripheral edges 11 of the side walls 5 are connected to one another by means of an edge wall 12 .
  • the ratchet housing 4 has a cantilever arm 13 which extends away from the ratchet rotating body 7 and forms a seat 15 for the hydraulic drive unit 2 on its one side 14 .
  • the ratchet housing 4 in the cantilever arm 13 has a free space 17 between the side walls 5, which is accessible from outside the torque wrench 1 through an access opening 18 which is in the edge wall 12 on the seat 15 for the side 19 of the cantilever arm 13 facing away from the hydraulic drive unit 2 is arranged.
  • the free space 17 has the shape of a triangle in a cross section parallel to the side walls 5 - ie in a plane perpendicular to the axis 8, 9 of the through opening 6 or the ratchet rotating body 7 - which tapers into the ratchet housing 4 .
  • the size of the triangular angle 20 of the free space 17 opening towards the access opening 18 is adapted to the requirements of the respective application.
  • the tip 21 of the triangular angle 20 opening towards the access opening 18 is rounded.
  • a through hole 22 which runs through the two side walls 5 of the ratchet housing 4 and the free space 17 and is designed to receive a bolt 23 for fastening a fastening section 24 of the support device 16 . Due to the triangular shape of the free space 17, the attachment section 24 of the support device 16 can be easily inserted into the free space 17.
  • the position of the bores 22a in the side walls 5 of the ratchet housing 4, ie the edge distances of these bores 22a to the edge 25 of the free space 17, and the position of the bore 22b in the fastening section 24 of the support device 16, ie the edge distances of this bore 22b to the edge 26 of the fastening section 24, are matched to one another in such a way that the bore 22b in the fastening section 24 is aligned with the bores 22a in the side walls 5 of the ratchet housing 4 when the fastening section 24 is inserted as far as possible into the free space 17, i.e. either the fastening section 24 in the free space 17 rests against the walls 27 thereof or the support device 16 rests against the edge wall 12 of the ratchet housing 4 .
  • the bolt 23 is then first passed through the bore 22a in a side wall 5, then through the bore 22b in the fastening section 24 - and thus through the free space 17 - and finally through the bore 22a in the second side wall 5 of the Ratchet housing 4 passed through.
  • the bolt 23 has a bolt shank 28 and a bolt head 29, the diameter of which is slightly larger than that of the bolt shank 28. At least the bore 22a in one of the side walls 5 has a step 30 on which the bolt head 29 when inserted comes to the plant. When the bolt 23 is inserted, its end faces 31, 32 on the bolt head 29 and on the bolt end are flush with the outer walls 5a of the side walls 5 of the ratchet housing 4.
  • the bolt 23 is secured in position by a spring-loaded ball 33 ( figure 1 ) which, when the bolt 23 is inserted, presses into a recess (not shown) in the bore wall of the fastening section 24 of the support device 16 .
  • a wear plate 34 is shown as the support device 16 to be fastened, with a fastening section 24 which extends transversely to the plane of the plate.
  • the torque wrench 1 is off figure 1 shown with wear plate 34 now attached.
  • its fastening section 24 extends through the access opening 18 in the edge wall 12 of the torque wrench 1 ( figures 1 and 6 ) into the free space 17.
  • the bolt 23 then extends - as described above - through the bores 22a in the side walls 5 of the torque wrench 1 and through the bore 22b in the fastening section 24 of the wear plate 34, with the spring-loaded position securing ball 33 entering the depression in the bore 22b of the fastening section 24 is locked.
  • the wearing plate 34 When it is fastened to the torque wrench 1 , the wearing plate 34 rests against the side 19 or edge wall 12 of the cantilever arm 13 facing away from the drive unit 2 .
  • FIG 7 further examples of possible support devices 16 are shown, such as a support device 35 with an extension for pressure transmission or a ring support device 36 or a support device 37 with an extension arm.
  • the support device 37 with an extension arm does not have a fastening section that is inserted into the free space 17 of the torque wrench 1, but rather two opposing, external fastening sections 38 that are attached to the outside of the side walls 5 of the Torque screwdriver 1 are applied.
  • the bolt 23 is then first passed through the bore 22b in one fastening section 38, then through the bore 22a in the adjacent side wall 5, then through the free space 17 and finally through the bore 22a in the other side wall 5 and through the bore 22b in the other attachment portion 38 out.
  • the bores 22a running through the two side walls 5 of the ratchet housing 4 or the torque wrench 1 are loaded exclusively by the bolt 23 for fastening the support device 16 and the bores 22a and the bolt 23 can therefore be optimally arranged and dimensioned.

Landscapes

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

Claims (3)

  1. Visseuse dynamométrique comprenant un cliquet (3) et un entraînement (2) pour le cliquet (3), le cliquet présentant un boîtier de cliquet (4) avec
    deux parois latérales (5) opposées l'une à l'autre, qui présentent une distance prédéterminée l'une par rapport à l'autre et sont reliées entre elles,
    une ouverture traversante (6) s'étendant transversalement à travers les deux parois latérales (5), qui est conçue pour recevoir un corps rotatif de cliquet (7), dont l'axe de rotation (8) s'étend parallèlement à l'axe (9) de l'ouverture traversante (6), et avec
    des moyens de fixation (17, 22, 23) pour fixer un dispositif de soutien (16) sur la visseuse dynamométrique (1), avec lequel la visseuse dynamométrique (1) peut être soutenue perpendiculairement à l'axe de rotation (8) du corps rotatif de cliquet (7),
    dans laquelle
    les moyens de fixation (17, 22, 23) présentent un espace libre (17) situé entre les parois latérales (5), qui est conçu pour recevoir une portion de fixation (24) du dispositif de soutien (16), et
    les moyens de fixation (17, 22, 23) comprennent des dispositifs (22, 23) pour fixer la portion de fixation (24) dans l'espace libre (17),
    les parois latérales (5) étant reliées entre elles, l'espace libre (17) est accessible de l'extérieur de la visseuse dynamométrique (1),
    les bords périphériques extérieurs (11) des deux parois latérales (5) opposées l'une à l'autre sont reliés entre eux au moyen d'une paroi de bord (12), et
    l'ouverture d'accès (18) à l'espace libre (17) est disposée dans ladite paroi de bord (12) et est conçue pour permettre à la portion de fixation (24) du dispositif de soutien (16) d'être introduire à travers elle-même (18) et jusque dans l'espace libre (17), et
    les moyens de fixation (17, 22, 23) comprennent des dispositifs (22, 23) pour la fixation amovible de la portion de fixation (24) dans l'espace libre (17), un alésage (22, 22a) s'étendant transversalement à travers les deux parois latérales (5) et l'espace libre (17), qui est conçu pour recevoir un boulon (23) pour fixer la portion de fixation (24) du dispositif de soutien (16), et
    la portion de fixation (24) du dispositif de soutien (16) présente un alésage (22b) qui est également conçu pour recevoir le boulon (23) et qui est en alignement avec les alésages (22a) dans les parois latérales (5) du boîtier de cliquet (4),
    caractérisée en ce que
    l'alignement est atteint lorsque soit la portion de fixation (24) dans l'espace libre (17) est en appui contre les parois (27) de celui-ci, soit le dispositif de soutien (16) est en appui contre la paroi de bord (12) du boîtier de cliquet (4).
  2. Visseuse dynamométrique selon la revendication 1,
    caractérisée en ce que l'espace libre (17) présente, dans un plan perpendiculaire à l'axe (9) de l'ouverture traversante (6), une section transversale de forme triangulaire qui se rétrécit vers l'intérieur du boîtier de cliquet (4).
  3. Visseuse dynamométrique selon l'une des revendications 1 ou 2,
    caractérisée par un ensemble de cliquet qui comprend le cliquet (3) avec le boîtier de cliquet (4), et par un ensemble d'entraînement qui comprend l'entraînement (2) pour le cliquet (3), l'ensemble de cliquet et l'ensemble d'entraînement pouvant être assemblés de manière amovible pour former un ensemble de visseuse.
EP16766848.2A 2015-09-02 2016-08-22 Visseuse dynamométrique Active EP3344419B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015011553.7A DE102015011553A1 (de) 2015-09-02 2015-09-02 Drehmomentschrauber
PCT/EP2016/001416 WO2017036579A1 (fr) 2015-09-02 2016-08-22 Visseuse dynamométrique

Publications (2)

Publication Number Publication Date
EP3344419A1 EP3344419A1 (fr) 2018-07-11
EP3344419B1 true EP3344419B1 (fr) 2022-07-20

Family

ID=56943461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16766848.2A Active EP3344419B1 (fr) 2015-09-02 2016-08-22 Visseuse dynamométrique

Country Status (7)

Country Link
US (1) US10875160B2 (fr)
EP (1) EP3344419B1 (fr)
JP (1) JP6560817B2 (fr)
DE (1) DE102015011553A1 (fr)
DK (1) DK3344419T3 (fr)
ES (1) ES2925070T3 (fr)
WO (1) WO2017036579A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034148A1 (de) * 1989-10-27 1991-05-29 Raymond Engineering Flacher drehmomentschluessel mit zahnstangengetriebe
JP2010023209A (ja) * 2008-07-23 2010-02-04 Bestma Kk トルクレンチ装置
WO2014176468A1 (fr) * 2013-04-24 2014-10-30 HYTORC Division Unex Corporation Appareil de serrage d'elements d'assemblage filetes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409865A (en) 1981-01-15 1983-10-18 Unex Corporation Continuous ratchet drive
US4663997A (en) * 1986-01-14 1987-05-12 Junkers John K Fluid-operated wrench
US20020073808A1 (en) 2000-12-15 2002-06-20 Jamra James A. Housing for a power tool
US8371190B2 (en) * 2008-11-06 2013-02-12 Asaf Miller Fingertip tool holder
EA034298B1 (ru) * 2011-08-26 2020-01-27 Хайторк Дивижн Юнекс Корпорейшн Установка для затягивания резьбовых соединений

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034148A1 (de) * 1989-10-27 1991-05-29 Raymond Engineering Flacher drehmomentschluessel mit zahnstangengetriebe
JP2010023209A (ja) * 2008-07-23 2010-02-04 Bestma Kk トルクレンチ装置
WO2014176468A1 (fr) * 2013-04-24 2014-10-30 HYTORC Division Unex Corporation Appareil de serrage d'elements d'assemblage filetes

Also Published As

Publication number Publication date
US10875160B2 (en) 2020-12-29
DK3344419T3 (da) 2022-08-15
ES2925070T3 (es) 2022-10-13
WO2017036579A1 (fr) 2017-03-09
US20180178356A1 (en) 2018-06-28
JP2018523585A (ja) 2018-08-23
DE102015011553A1 (de) 2017-03-02
EP3344419A1 (fr) 2018-07-11
JP6560817B2 (ja) 2019-08-14

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