EP0401902A1 - Outil - Google Patents

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Publication number
EP0401902A1
EP0401902A1 EP90201379A EP90201379A EP0401902A1 EP 0401902 A1 EP0401902 A1 EP 0401902A1 EP 90201379 A EP90201379 A EP 90201379A EP 90201379 A EP90201379 A EP 90201379A EP 0401902 A1 EP0401902 A1 EP 0401902A1
Authority
EP
European Patent Office
Prior art keywords
tool
thread
ramp
sub
part tool
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
EP90201379A
Other languages
German (de)
English (en)
Inventor
Hans Elsner
Jürgen Sandkuhl
Fritz Schaper
Rolf Müller
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.)
DST Deutsche System-Technik GmbH
Original Assignee
DST Deutsche System-Technik GmbH
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
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 DST Deutsche System-Technik GmbH, Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV filed Critical DST Deutsche System-Technik GmbH
Publication of EP0401902A1 publication Critical patent/EP0401902A1/fr
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
    • 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
    • B25B23/103—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means for gripping threaded studs

Definitions

  • the invention relates to a tool for rotating an element provided with at least one thread in relation to a counter element provided with a counter thread, the tool consisting of at least a first and a second part tool, of which the first part tool is round and on a part of the axial length with a Mating thread for the or a thread of the element is provided and at least one other part of the axial length coaxially merges with the second part tool, twisting the two part tools against each other via a ramp-shaped form fit causes an axial movement against each other, and the second part tool when screwing in with a surface axially abuts a corresponding counter surface of the element.
  • Such a tool is known from DE-GM 1 951 097 and is used there for screwing in or loosening studs.
  • Such studs are provided with a thread along their entire length and therefore do not have a surface to which a wrench can be attached for screwing in or loosening.
  • the known insertion tool consists of a sleeve with a first internal thread, which is adapted to the thread of the stud, and a second thread with a smaller and opposite pitch, into which the second tool part is screwed in the form of a screw.
  • the two threads are clamped against each other, and then the stud screw can be screwed in or released for loosening via the first part tool in the form of the sleeve, which is designed, for example, as a hexagon on the outside the other tool part in the form of the screw, which can also be provided with a hexagon, turned in the opposite direction.
  • the first part tool in the form of the sleeve which is designed, for example, as a hexagon on the outside the other tool part in the form of the screw, which can also be provided with a hexagon, turned in the opposite direction.
  • both sub-tools must be rotated against each other to release the bracing, and then the sleeve can be unscrewed from the stud screw.
  • this requires the use of two keys when screwing in or loosening.
  • the object of the invention is therefore to provide a tool of the type mentioned, which is particularly simple in construction and is particularly suitable as a one-hand tool for the damage-free screwing in of cable entries with internal and external threads with a defined torque.
  • slope of the ramp is greater than the slope of the thread of the first tool part and that the direction of the The slope of the ramp is selected so that when the second part of the tool is turned, the thread of the first part of the tool is braced over the element against the contact surface of the second part of the tool, the torque for rotating the element being applied to or via the second part of the tool.
  • a preferred field of application of the insertion tool according to the invention is the insertion of cable bushings into housings via the internal thread of the cable bushing.
  • the first part tool it is expedient for the first part tool to be arranged coaxially in the second part tool and to have a part protruding from this second part tool with an external thread.
  • the edge of the cable duct forms the contact surface for the second tool part.
  • a simple embodiment of the screw-in tool according to the invention in which both sub-tools form an easily manageable unit, is characterized in that the ramp is formed by a thread between the first and second sub-tools.
  • this thread can also be designed as a trapezoidal thread or as a rectangular thread.
  • the angle of rotation between the first and the second sub-tool is expedient for the angle of rotation between the first and the second sub-tool to be limited by a stop.
  • a stop can be formed, for example, by an elastic ring which is arranged on the first part tool between the two different threads and which prevents the first part tool from being screwed further into the second part tool.
  • a particularly advantageous embodiment of the tool according to the invention in which the angle of rotation is limited by a stop, is characterized in that the two tool parts engage in each other via smooth cylindrical surfaces and in one tool part a pin is radially attached, which is in a ramp-shaped recess of the other tool part slid into it and forms the stop.
  • the pin thus takes over the ramp-shaped form fit and the stop at the same time, the stop only having to allow a small angle of rotation.
  • the tool shown in Fig. 1 consists of a first part tool 1, which is provided at the lower end with an external thread 5 which is loosely screwed into the corresponding internal thread of an element 7 to be screwed in (shown in broken lines).
  • the first part tool 1 has a thread 4 which fits into a corresponding counter thread of a second part tool 2.
  • This second part tool 2 has a part 3 with surfaces, for example a hexagon, to which a nut wrench, in particular a torque wrench, can be attached, so that the element 7 can be screwed into a counter element (not shown) with a defined torque.
  • the entire outer surface of the second sub-tool 2 can be designed as a hexagon, or the second sub-tool 2 can also form the end piece of a lever for applying the screwing-in torque.
  • an elastic ring can be arranged in particular at the transition between the threads 4 and 5 of the part tool 1, which ring is smaller than the diameter of the thread 5, but larger than the diameter of the thread 4, in order to prevent the two from being screwed in Clamp part tools 1 and 2 too tightly together.
  • this thread In order to keep the friction in the thread 4 between the two tool parts 1 and 2 low, it is expedient to design this thread as a trapezoidal thread or as a rectangular thread.
  • a tool for loosening an element 7 differs only in that the direction of the pitch of the thread 4 is reversed, i.e. if the thread 5 is a right-hand thread, the thread 4 is a left-hand thread, but the amount of the pitch is also greater than that of the thread 5.
  • the element 17 to be screwed in or released has an external thread.
  • the first part tool 11 has a Internal thread 15, which is adapted to the thread of the element 17, and an internal thread 14, which receives the corresponding external thread of a second tool part 12.
  • the handling of this tool according to FIG. 2 is otherwise completely the same as that of the tool according to FIG. 1, ie by means of the second part tool 12, the first part tool 11 is screwed onto the thread 15 of the element 17 to be screwed in or loosened until the contact surface 16 of the second part tool 12 abuts a corresponding surface of the element 17.
  • the second part tool 12 After screwing in, the second part tool 12 is rotated in the opposite direction, as a result of which the contact surface 16 is automatically detached from the element 17 because of the steeper thread 14.
  • stops in particular an elastic ring between the part tool 11 and the region 13.
  • the tool shown in FIG. 3 is again provided for an element with an internal thread, which is not further indicated here and into which the external thread 25 of the first part tool 21 is screwed.
  • the continuation of the first part tool 21 following the thread 25 is cylindrical in shape with a smooth surface 32 which fits into a corresponding cylindrical bore with a smooth inner surface 31 of the second part tool 22.
  • a pin 30 is also inserted radially, which projects through the side walls of the second part tool 22 and is slidably mounted therein in an elongated hole 24 on each side, which has a ramp-shaped slope, as seen from the view in FIGS. 3a and the sectional view BB in Fig. 3c can be seen.
  • the two Cylinder surfaces 31 and 32 have a slight indentation in the area of the pin 30, but this is not important for the principle of function and is only intended to prevent the two tool parts from jamming when the holes for the pin 30 in the two tool parts 21 or 22 should raise something due to stress at the edges.
  • the pin 30 is preferably pressed into the part tool 21, but can also be secured against falling out by a screw arranged axially in the part tool 21.
  • the first part tool 21 with the thread 25 is screwed into the element to be screwed in via the second part tool 22, the pin 30 resting against the right, higher-lying stop of the elongated hole 24 until the contact surface 26 of the second part tool 22 abuts the screw-in element.
  • the screw-in torque is then applied by means of a nut wrench via the correspondingly designed part 23 of the second part tool 22.
  • the second part tool 22 is turned back, the contact surface 26 automatically being released from the element to be screwed in without substantial force, since the pitch of the ramp-shaped elongated hole 24 is greater than the pitch of the thread 25. If the second part tool 22 then continues is turned to the left, the pin 30 rests against the left edge of the elongated hole 24 and then takes the first part tool 21 with it, which can be easily screwed out of the screwed-in element in this way.
  • the elongated hole 24 must have the opposite pitch, i.e. must be inclined to the bottom right.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP90201379A 1989-06-03 1990-05-30 Outil Ceased EP0401902A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893918165 DE3918165A1 (de) 1989-06-03 1989-06-03 Werkzeug
DE3918165 1989-06-03

Publications (1)

Publication Number Publication Date
EP0401902A1 true EP0401902A1 (fr) 1990-12-12

Family

ID=6382018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90201379A Ceased EP0401902A1 (fr) 1989-06-03 1990-05-30 Outil

Country Status (2)

Country Link
EP (1) EP0401902A1 (fr)
DE (1) DE3918165A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711935A1 (fr) * 1993-11-02 1995-05-12 Hilti Ag Outil de vissage.
SG118088A1 (en) * 2001-09-21 2006-01-27 Singapore Technologies Marine A stud rotating tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1298324A (en) * 1918-11-18 1919-03-25 Frank M Funk Stud-driver.
US1384417A (en) * 1919-02-12 1921-07-12 California Tool Works Stud-driving wrench
US2933962A (en) * 1958-03-28 1960-04-26 Logan Mfg Company Non-marring wrench fitting for pipes and the like
DE1478853A1 (de) * 1963-10-17 1969-09-04 Wilhelm Dommer Rohrschraubenschluessel fuer eingeputzte Rohrstuecke,insbesondere Fittings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1298324A (en) * 1918-11-18 1919-03-25 Frank M Funk Stud-driver.
US1384417A (en) * 1919-02-12 1921-07-12 California Tool Works Stud-driving wrench
US2933962A (en) * 1958-03-28 1960-04-26 Logan Mfg Company Non-marring wrench fitting for pipes and the like
DE1478853A1 (de) * 1963-10-17 1969-09-04 Wilhelm Dommer Rohrschraubenschluessel fuer eingeputzte Rohrstuecke,insbesondere Fittings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711935A1 (fr) * 1993-11-02 1995-05-12 Hilti Ag Outil de vissage.
SG118088A1 (en) * 2001-09-21 2006-01-27 Singapore Technologies Marine A stud rotating tool

Also Published As

Publication number Publication date
DE3918165A1 (de) 1990-12-13

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Legal Events

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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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Designated state(s): AT CH DE FR GB IT LI

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Effective date: 19910606

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DST DEUTSCHE SYSTEM-TECHNIK GMBH

17Q First examination report despatched

Effective date: 19930119

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

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18R Application refused

Effective date: 19941014