EP3147079A1 - Dispositif de limitation du couple - Google Patents

Dispositif de limitation du couple Download PDF

Info

Publication number
EP3147079A1
EP3147079A1 EP15186211.7A EP15186211A EP3147079A1 EP 3147079 A1 EP3147079 A1 EP 3147079A1 EP 15186211 A EP15186211 A EP 15186211A EP 3147079 A1 EP3147079 A1 EP 3147079A1
Authority
EP
European Patent Office
Prior art keywords
receptacle
torque
receiving part
head
nut
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Withdrawn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
EP15186211.7A
Other languages
German (de)
English (en)
Inventor
Tanja Meindorfer
Gerald Schreiber
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP15186211.7A priority Critical patent/EP3147079A1/fr
Priority to PCT/EP2016/072232 priority patent/WO2017050725A1/fr
Publication of EP3147079A1 publication Critical patent/EP3147079A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
    • B25B23/108—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a Philips type bit, an Allen type bit or a socket
    • 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
    • B25B23/1415—Break members; Arrangements specially adapted for break-bolts
    • 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
    • B25B31/00—Hand tools for applying fasteners

Definitions

  • the invention relates to a device for torque limiting according to the preamble of claim 1.
  • a device for torque limiting is equipped with a head part, which has a rotary handle for rotationally fixed coupling of the head part with a setting tool, with a, in particular metallic, receiving part, which is a receptacle for rotatably receiving a nut or a bolt head, and with means for transmitting torque from the head part on the receiving part, which connect the head part and the receiving part, wherein the means for transmitting torque at a limit torque breaking the connection between the head part and receiving part.
  • expansion anchors When placing expansion anchors, it may be desirable to indicate the achievement of a limit torque on the armature nut and / or to limit the torque on the armature nut. In this way, the function of the expansion anchors can be controlled in a particularly simple manner, or a particularly reliable placement can be ensured even in peripheral areas.
  • a generic device for torque limiting which can be plugged onto an anchor nut or a bolt head, and having a predetermined breaking point, which breaks when a limit torque is reached.
  • the device is designed so that forces occurring during hammering of a spreading anchor do not damage or weaken the breaking point.
  • a similar device for torque limiting which can be plugged onto a nut or a bolt head, is from the FR 2598855 A1 known.
  • the EP 1353080 A1 describes a cap-like, key surfaces exhibiting torque limiting element, which is attachable for applying a torque to an armature nut of an expansion anchor, wherein the torque limiting element in having its interior integrally formed shear elements with predetermined breaking points, which are positively connected to the torque transmission in contact with the attack surfaces of the mother and shear when reaching a predetermined limit torque.
  • the object of the invention is to provide a device for torque limiting, which is particularly reliable with a simple and economical construction, and in particular allows a particularly reliable Ankera.
  • An inventive torque limiting device is characterized in that the device in the receptacle has at least one clamping element made of a plastic material for clamping the nut or the bolt head in the receptacle in a clamping manner.
  • a first basic idea of the invention can be seen to provide in the receptacle of, in particular metallic, receiving part at least one clamping element made of a plastic material, which in the intended operation of the device, the recorded in the recording nut or the recorded in the recording pin head, and thus in particular at least partially frictionally engaged, axially in the recording holds.
  • clamping projections may be provided on the receiving part.
  • the receiving part it has been found that it may be undesirable when using integrally formed with the metallic receiving part clamping projections Failure of the receiving part can come under rotational load, especially if the receiving part consists of a metal casting material. In extreme cases, the receiving part may even fail before turning the means for limiting the torque during rotation, with the result that the desired torque control is no longer given. This is where the invention starts and provides at least one clamping element made of a plastic material in the receptacle for clamping the nut or the bolt head.
  • the device according to the invention is designed such that the means for torque transmission preferably break at a limit torque while canceling the connection between the head part and the receiving part.
  • preferential breaking it can be understood, in particular, that the means for torque transmission break at a lower torque than the head part and as the receiving part, in particular at a lower torque than the rotary control means and as the receptacle, so that the means for transmitting torque form a predetermined breaking point.
  • the torque relates to a rotation about an axis extending in the axial direction.
  • the torque, the radial direction and / or the axial direction may relate to a longitudinal and / or symmetrical axis of the device, the head part, the receiving part, the rotary engagement means and / or the receptacle, wherein the axes of these elements preferably coincide.
  • the rotary control means may, for example, have an external polygonal structure, in particular an external hexagonal structure.
  • the receiving part may in particular consist of a metal casting material.
  • the means for transmitting torque and / or the head part are preferably metallic and particularly preferably at least partially have a metal casting material.
  • the device may advantageously comprise an indicator ring of a plastic material which is arranged in the receptacle.
  • an indicator ring By means of such an indicator ring, the cancellation of the connection between the head part and the receiving part and thus the achievement of the limit torque can be visualized in a particularly reliable manner, especially because a plastic material can be particularly easily dyed, so that a particularly good visible indicator can be particularly easily realized.
  • This indicator ring can appear after the twisting of the head part and the lifting of the connection between the head part and receiving part, so that it is indicated that the limit torque has been reached and, for example, an anchor has been set with the correct torque.
  • the torque limiting device may comprise a receptacle, in particular a passage, for a threaded rod carrying the nut, wherein preferably the indicator ring surrounds the receptacle.
  • the indicator ring is arranged so that it contributes at most insignificantly for torque transmission between the head part and receiving part.
  • the indicator ring according to the invention can in particular serve on the one hand as a setting indicator and on the other hand as an anti-manipulation ring, since the indicator ring can not easily be re-installed after the receiving part has been removed from the nut or the bolt head.
  • the at least one clamping element is formed integrally with the indicator ring.
  • the clamping element and the indicator ring accordingly form a unit. This can allow a particularly economical production.
  • this embodiment can enable a particularly simple and reliable positioning of the indicator ring on the one hand and of the clamping element both during manufacture and during the intended use of the device, so that the reliability is further increased.
  • the device in the receptacle may comprise a plurality of clamping elements made of a plastic material for clamping fixing the nut or the bolt head in the receptacle, which preferably formed integrally with the indicator ring are.
  • the clamping elements and the indicator ring expediently form a cage which surrounds the nut introduced into the receptacle or the bolt head introduced into the receptacle.
  • the clamping elements can protrude from the indicator ring at least approximately parallel to one another and / or at least approximately in the axial direction.
  • a further preferred embodiment of the invention lies in the fact that the means for transmitting torque have webs which connect the head part and the receiving part.
  • the webs can form a predetermined breaking point which breaks when the limit torque is reached.
  • the webs may in particular be arranged around the longitudinal axis of the device.
  • the webs preferably extend at least partially in the radial direction, which may be advantageous for the power flow. With regard to the force symmetry, it may be advantageous for the webs to be arranged equidistantly.
  • the indicator ring rests against the webs.
  • the indicator ring is thus at the break points, which in particular can lead to the fact that the indicator ring can not be installed a second time as soon as the webs are broken.
  • the receptacle has an internal polygonal structure, wherein preferably at least one clamping element is spaced from the edges of the polygonal structure.
  • the at least one clamping element is thus located in a key area of the polygon socket structure.
  • a further preferred embodiment of the invention is that the at least one clamping element is arranged in a clearance compensation channel formed in the receptacle.
  • the clearance compensation channel is preferably formed in a key area of the polygon socket structure.
  • the clearance compensation channel can accommodate a radial offset of the clamping element and thus further increase the reliability.
  • the clearance compensation channel can cause a particularly pronounced spring action on the clamping element, which can have a positive effect on the clamping.
  • the head part, the receiving part and the means for torque transmission are preferably formed at least partially in one piece, which can further reduce the manufacturing cost.
  • the invention also relates to an arrangement with a device according to the invention, wherein a nut or a bolt head, preferably an expansion anchor, is accommodated in the receptacle.
  • An expansion anchor may, in particular, be understood to be an anchor, in which an axial offset of an anchor bolt relative to an expansion element causes a radial offset of the expansion element relative to the anchor bolt. Since the inventive device causes a torque limiter, it can allow a particularly close to the edge setting of the expansion anchor.
  • the device is crown-shaped and has a head part 10, a foot-side receiving part 60 and a plurality of webs 43, 43 'on.
  • the webs 43, 43 ' connect the head part 10 and the receiving part 60 and form means 40 for torque transmission from the head part 10 on the receiving part 60.
  • the webs extending from the head part 10 radially outwardly to the receiving part 60 back, which diameter larger than the head part 10th is.
  • the receiving part 60 and preferably also the head part 10 and / or the webs 43, 43 'comprise a metal material.
  • the receiving part 60, the head part 10 and / or the webs 43, 43 ' may in particular be formed integrally at least in some areas.
  • a receptacle 61 is formed in the receiving part 60.
  • a nut or a bolt head is received in this receptacle 61.
  • the receptacle 61 has a hexagon socket structure, in particular in FIG. 2 can be seen, and which corresponds to an external hexagonal structure of the nut or the bolt head. Instead of a hexagon, another polygonal structure can also be provided. Additionally or alternatively, a non-positive connection may be present.
  • the head part 10 designed as a hexagon rotary engagement means 12, by means of which a torque of a setting tool, not shown, is positively transferable to the head part 10.
  • the rotary handle 12 is formed as a separate sleeve.
  • a web 43 is omitted for each edge of the rotary control means 12.
  • a total of six webs 43 are present in the illustrated example.
  • the receiving part 60 and the head part 10 are arranged coaxially and define a common longitudinal axis 99 of the device.
  • the head part 10 has a passage 15, which is aligned with the receptacle 61 of the receiving part 60, so that the device seen in the longitudinal direction (see Fig. 2) is continuous.
  • an indicator ring 70 made of a plastic material is arranged on the bottom of the receptacle 61.
  • the indicator ring 70 is positioned coaxially with the longitudinal axis 99, is aligned with the passage 15 and with the receptacle 61 and abuts against the webs 43 of the means 40 for transmitting torque.
  • From the indicator ring 70 are three clamping elements 75, 75 ', 75 "from, wherein the indicator ring 70 and the clamping elements 75, 75', 75" form a cage structure.
  • the three clamping elements 75, 75', 75" run approximately parallel to the longitudinal axis 99 in the receptacle 61, in each case in a clearance compensation channel 79, which is formed in the side wall of the receptacle 61, in particular in a key area.
  • the torque limiting device is mounted on a nut or a bolt head, wherein the nut or the bolt head is received in the receptacle 61 and there by means of the corresponding polygonal structures is rotationally fixed manner coupled to the receiving part 60.
  • the three clamping elements 75, 75 ', 75 "made of plastic come between the nut or the bolt head and the Receiving part 60 to lie and jam the nut or the bolt head in the receptacle 61.
  • a mother carrying threaded rod can be absorbed by the passage 15 in the head part 10.
  • a torque is exerted on the head part 10 via the rotary control means 12. This torque is transmitted via the webs 43 on the receiving part 60 and the receiving part 60 in turn to the mother or the bolt head.
  • the webs 43 shear off, with the result that the head part 10 is separated from the receiving part 60 and no further torque transmission takes place on the receiving part 60.
  • the device therefore acts as a torque limiting Abreissmutter. After shearing the webs 43, the head part 10 is separated from the receiving part 60 and falls off the receiving part 60. In this case, the indicator ring 70 appears on the receiving part 60 and visually signals the achievement of the limit torque.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP15186211.7A 2015-09-22 2015-09-22 Dispositif de limitation du couple Withdrawn EP3147079A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15186211.7A EP3147079A1 (fr) 2015-09-22 2015-09-22 Dispositif de limitation du couple
PCT/EP2016/072232 WO2017050725A1 (fr) 2015-09-22 2016-09-20 Dispositif de limitation de couple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15186211.7A EP3147079A1 (fr) 2015-09-22 2015-09-22 Dispositif de limitation du couple

Publications (1)

Publication Number Publication Date
EP3147079A1 true EP3147079A1 (fr) 2017-03-29

Family

ID=54199542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15186211.7A Withdrawn EP3147079A1 (fr) 2015-09-22 2015-09-22 Dispositif de limitation du couple

Country Status (2)

Country Link
EP (1) EP3147079A1 (fr)
WO (1) WO2017050725A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021004481A1 (de) 2021-09-03 2023-03-09 LANIOL GmbH Kleinteilemontagehilfselement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3346145A1 (fr) 2017-01-05 2018-07-11 HILTI Aktiengesellschaft Dispositif de limitation de couple comportant trois brides
EP3346146A1 (fr) 2017-01-05 2018-07-11 HILTI Aktiengesellschaft Écrou de rupture ayant une surface de rupture à grand angle d'ouverture
EP3346147A1 (fr) 2017-01-05 2018-07-11 HILTI Aktiengesellschaft Limiteur de couple comprenant une pince
DE102019005355A1 (de) * 2019-03-28 2020-10-01 Grohe Ag Verfahren zur Herstellung einer Verbindungsanordnung sowie eine Mutter

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834253A (en) * 1972-06-08 1974-09-10 H Carr Keeper for socket wrenches
FR2598855A1 (fr) 1986-05-14 1987-11-20 Sicame Sa Embout de vissage adhesif, cassable et jetable, a couple de vissage predetermine.
US20020076295A1 (en) 2000-12-14 2002-06-20 Rodney Gibbons Torque limiting device
EP1353080A1 (fr) 2002-04-10 2003-10-15 Fischerwerke Arthur Fischer GmbH & Co. KG Elément à limitation de couple intrinsèque pour un goujon expansible
US20040226419A1 (en) * 2003-05-15 2004-11-18 Morgan March R. Device to correctly torque nuts and bolts
DE102010043167A1 (de) 2010-10-29 2012-05-03 Hilti Aktiengesellschaft Vorrichtung zur Drehmomentbegrenzung
DE102011106696A1 (de) 2011-07-06 2013-01-10 Labomatic Instruments Ag Schraubelement zum Befestigen einer Leitung an einem Gegenstück
US20150224633A1 (en) * 2014-02-10 2015-08-13 Pouria Alavi Socket for socket wrench

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834253A (en) * 1972-06-08 1974-09-10 H Carr Keeper for socket wrenches
FR2598855A1 (fr) 1986-05-14 1987-11-20 Sicame Sa Embout de vissage adhesif, cassable et jetable, a couple de vissage predetermine.
US20020076295A1 (en) 2000-12-14 2002-06-20 Rodney Gibbons Torque limiting device
EP1353080A1 (fr) 2002-04-10 2003-10-15 Fischerwerke Arthur Fischer GmbH & Co. KG Elément à limitation de couple intrinsèque pour un goujon expansible
US20040226419A1 (en) * 2003-05-15 2004-11-18 Morgan March R. Device to correctly torque nuts and bolts
DE102010043167A1 (de) 2010-10-29 2012-05-03 Hilti Aktiengesellschaft Vorrichtung zur Drehmomentbegrenzung
DE102011106696A1 (de) 2011-07-06 2013-01-10 Labomatic Instruments Ag Schraubelement zum Befestigen einer Leitung an einem Gegenstück
US20150224633A1 (en) * 2014-02-10 2015-08-13 Pouria Alavi Socket for socket wrench

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021004481A1 (de) 2021-09-03 2023-03-09 LANIOL GmbH Kleinteilemontagehilfselement

Also Published As

Publication number Publication date
WO2017050725A1 (fr) 2017-03-30

Similar Documents

Publication Publication Date Title
WO2017050725A1 (fr) Dispositif de limitation de couple
DE1119060B (de) Schraubenmutter
EP3565976B1 (fr) Dispositif de limitation de couple comportant trois brides
DE2748093A1 (de) Von hand betaetigbares werkzeug zur installation blinder ankermuttern
CH621391A5 (fr)
EP3658785B1 (fr) Boulon d'écartement et ensemble de liaison comportant un tel boulon d'écartement
DE69220872T2 (de) Sicherungsvorrichtung für Schraubenbolzen
EP3565978B1 (fr) Limiteur de couple comprenant une pince
DE3309884C2 (fr)
WO2012055599A1 (fr) Dispositif pour la limitation du couple
EP3565977B1 (fr) Écrou de rupture ayant une surface de rupture à grand angle d'ouverture
EP3909903B1 (fr) Point de butée
EP2910801B1 (fr) Système de fixation à rivet aveugle
EP1353080B1 (fr) Elément à limitation de couple intrinsèque pour un goujon expansible
EP2698336A1 (fr) Anneau d'arrimage
EP0406801B1 (fr) Dispositif de fixation
EP3372343B1 (fr) Dispositif comportant un bras de support déviant le moment de réaction et un tournevis
EP2047953B1 (fr) Poignée et machine-outil manuelle
EP1548298A2 (fr) Elément de fixation
DE19808685A1 (de) Werkzeug zum Vernieten von Blindnietmuttern
DE3329104A1 (de) Befestigungselement und verfahren zum anbringen desselben
DE10231499B4 (de) Verschlusseinrichtung
DE19819251B4 (de) Handnietgerät zum Setzen von Blindnietmuttern
DE102004057884B4 (de) Schraubbefestigungsanordnung
DE102005004546A1 (de) Mitnehmer für einen Fensterheber

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20170930