EP4005898A1 - Accouplement pour forces de traction - Google Patents

Accouplement pour forces de traction Download PDF

Info

Publication number
EP4005898A1
EP4005898A1 EP21020595.1A EP21020595A EP4005898A1 EP 4005898 A1 EP4005898 A1 EP 4005898A1 EP 21020595 A EP21020595 A EP 21020595A EP 4005898 A1 EP4005898 A1 EP 4005898A1
Authority
EP
European Patent Office
Prior art keywords
jaws
coupling
blocking part
coupling according
opening
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Withdrawn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
EP21020595.1A
Other languages
German (de)
English (en)
Inventor
Herwig Dürnberger
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
Priority claimed from ATA67/2021A external-priority patent/AT524513A1/de
Application filed by Individual filed Critical Individual
Publication of EP4005898A1 publication Critical patent/EP4005898A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B11/00—Ski lift, sleigh lift or like trackless systems with guided towing cables only
    • B61B11/004—Means connecting load and cable
    • B61B11/006—Means connecting load and cable the load being a cycle

Definitions

  • the invention relates to a releasable coupling between a connection part and a holding assembly for transmitting a tensile force.
  • a very valuable application for the coupling according to the invention is on such surface lifts, which are used seasonally either for towing people with skis or for towing people with a bicycle. Without restricting the invention to this application, it will be described below primarily on the basis of this application.
  • the DE 1505962 A1 shows a coupling for attaching a means of transport, such as a ski bob to a drag lift.
  • the coupling is designed as a plug-in connection between a tapered bolt, which is aligned in the direction of pull, and a part that includes an opening.
  • the bolt is pushed into the opening and then fixed in it by a locking part being pushed around its waisted area transversely to its longitudinal direction.
  • the locking part is moved into the locked position against the action of an elastic spring.
  • the locking part remains in the locked position only as long as it is held in this position by manual pressure.
  • the DE1815531A1 shows a coupling for attaching a skibob to a ring, which can be connected to a rope of a drag lift.
  • the ring is attached to a hook that is pivotably attached to the skibob.
  • the hook is fixed in a holding position by a handle on the skibob. When the handle is released, the catch is also released.
  • a skibob is fixed to a bar of a tow lift with the help of a chain of double hooks and a cord.
  • the double hook is attached to the T-bar mounted.
  • the cord is fixed to the skibob with the first end; it runs through an eyelet on the double hook; to pull the skibob, its second end must be held by hand on the handlebars of the skibob.
  • the US 3837290 A shows a coupling between a transport device and a T-bar lift, the coupling being designed as a hook between a longitudinal part with a widened end and a double hook, the two parts of the double hook each being one-piece hooks which are aligned parallel to one another and arranged side by side, the distance between the one-piece hook to each other is greater than the strength of the longitudinal part in the non-widened area, but narrower than the widened end.
  • the longitudinal part is threaded between the two one-piece hooks. The connection is not self-releasing.
  • the EP 182723 B1 shows a coupling for attaching a bicycle to a drag lift.
  • the detachable, tensile connection between the two coupling parts consists of a cylindrical bolt and two jaws of a pair of pliers.
  • Several mechanisms are provided which cause the connection to be broken automatically if not maintained by a person's continued active action.
  • the FR2601637A2 shows a coupling for attaching a bicycle to a drag lift.
  • the detachable, tensile connection between the two coupling parts consists of a spherical part and two jaws of a pair of pliers.
  • a preloaded elastic spring keeps the jaws of the pliers in the open position in the absence of other influences. In order to keep them in the closed position, they must be acted on continuously via a Bowden cable from the handlebars of the bicycle.
  • the object on which the invention is based is to provide a coupling suitable for the transmission of tensile forces for the detachable connection of a bicycle to a T-bar lift.
  • the improvement should consist in the fact that the clutch should be easier to use and easier to accommodate in a long, slender cavity of a housing that is only open on one side, as is very advantageous when used on a drag lift.
  • the coupling consists of a connecting part and a holding assembly, with the connecting part comprising a part-spherical extension and the holding assembly comprising a plurality of jaws which can each be pivoted about a pivot axis and (like the jaws of pliers) delimit a pliers mouth into which the part-spherical extension can be inserted is, and can be clamped therein by pivoting the jaws.
  • the pivot axes of the jaws, the jaws of the pliers and the opening side of the jaws of the pliers lie one behind the other along the line of action of the tensile force intended to be transmitted by the coupling. This results in simple structural conditions and favorable external dimensions.
  • the alignments of the pivot axes of the jaws are normal to the line of action of the tensile force intended to be transmitted by the coupling. This results in simple structural conditions and favorable external dimensions.
  • the path of movement of that surface area of a jaw which may collide with the blocking part during the opening pivoting movement of the jaw is inclined in the vicinity of the blocking part by an angle which is more obtuse than 60° with respect to the alignment of the tensile force intended to be transmitted by the coupling degrees is.
  • connection part 1 consist of a connection part 1 and a holding assembly 2.
  • the holding assembly 2 is surrounded by a housing 3 which is open on two sides and which forms the handle part of a traction unit of a drag lift.
  • a connecting rod 4 also protrudes into the housing 3 and is firmly connected to the holding assembly 2 and represents the tensile connection to other parts of the T-bar lift.
  • the tensile force intended to be transmitted by the coupling is aligned essentially parallel to the direction of the connecting rod 4 .
  • this intermediate piece can be replaced by an approximately 15 cm long, relatively strong, Be formed UV-resistant hose from a material composite of fabric and polymer. With such a flexible intermediate piece, the process of coupling becomes a little easier and more comfortable.
  • connection part 1 is intended to be attached to the device to be towed by the drag lift or to the person to be towed.
  • this can typically be a bicycle to which the connection part 1 is anchored and on which a person sits while it is being pulled uphill by the drag lift.
  • the attachment to the person can take place by means of a belt which the person wears and to which the connection part 1 is anchored, and the person can typically stand on a snowboard and is pulled uphill by the lift.
  • the connecting part 1 consists of an anchoring part 5 and a part-spherical extension 6, which are firmly connected to one another.
  • the anchoring part 5 is used for anchoring to the object to be pulled (e.g. bicycle or belt) and is designed accordingly, for example as a bracket with several hooks or with several belt straps or as a clamp that can clamp an area of a belt or even by encapsulating injection molding with a belt is connected.
  • the part-spherical extension 6 protrudes from the anchoring part 5 and is used for the detachable connection of the connection part 1 to the holding assembly 2.
  • Important parts of the holding assembly 2 are a central part 7, several pivoting jaws 8 and a blocking part 9.
  • the pivotable jaws 8 are preferably designed as a two-armed lever, as in all of the examples shown, which is held pivotably on the central part 7 about a pivot axis 10 in each case.
  • the jaws 8 limit - similar to the rigid parts of a clothespin - a spatial area, the so-called "pliers mouth” 11, between them, which becomes smaller or larger depending on the pivoting position of the jaws 8 .
  • the part-spherical extension 6 can be pushed into the pliers mouth 11 between the jaws 8 .
  • the part-spherical extension 6 is pushed into the pliers mouth 11 and the pliers mouth 11 is then reduced in size by pivoting the jaws 8 with the lever arms adjacent to the pliers mouth 11 in the direction of the center of the pliers mouth 11, the jaws 8 come to the part-spherical extension
  • the intended contact surface of each jaw 8 with the part-spherical extension 6 is designed as a concave surface, so that the part-spherical extension 6 is held in a form-fitting manner.
  • the pivot axes 10 of the individual jaws 8 are preferably all at right angles to the straight line along which the part-spherical extension 6 is pushed into the pliers mouth 11 as intended can be or can be moved out of it.
  • the direction of this straight line is preferably also that direction in which the most important tensile force is to be transmitted between the connection part 1 and the holding assembly 2 .
  • those lever arms of the jaws 8 between which the part-spherical extension 6 is to be clamped preferably protrude from the pivot axes 10 of the jaws 8 in the direction of the opening area of the housing 3 .
  • the jaws 8 are designed as two-armed levers, it is advantageous to mount two mirror-image opposite jaws 8 each on a separate pivot axis 10 and not on a single common pivot axis.
  • the resulting two pivot axes 10 run side by side and are aligned parallel to one another. This makes it very easy to fix many parts of the holding assembly 2 to one another by means of a single screw 12 which runs coaxially with the central part 7 - which makes assembly of the holding assembly quite simple.
  • the central part 7 has an elongate area, the longitudinal direction of which is aligned parallel to the connecting rod 4 and thus parallel to the tensile force to be transmitted, and on which the blocking part is held in a guided, longitudinally displaceable manner.
  • the part-spherical extension 6 can only be released from the grip of the jaws 8 when these are in turn pivoted in such a way that they enlarge the jaws 11 of the pliers.
  • the lever arm of a jaw 8 located on the part-spherical extension 6 is pivoted away from the part-spherical extension 6, the lever arm of this jaw 8 facing away from the part-spherical extension 6 is pivoted in the opposite direction.
  • This pivoting can optionally be blocked by the blocking part 9, in that space between the jaws 8 is pushed in, which is separated from the jaws of the pliers 11 by the area of the pivot axes 10 .
  • the blocking part 9 is preferably approximately in the form of a truncated cone, and is arranged coaxially with and penetrates the central part 7 and is slidably guided thereon in the longitudinal direction thereof.
  • the contact surfaces between the blocking part 9 and the jaws 8 are each designed as an inclined plane in such a way that when the jaws 8 press on the blocking part 9 lying between them, this is pushed away from the jaws 8 along the central part 7, provided there are no other influences present on the blocking part 9. This ensures that when the connection part 1 is pulled away from the holding assembly 2, the jaws 8 are automatically opened and the connection part 1 is released from the holding assembly. Using the T-bar lift as an example, this simple release leads to a high level of security against being dragged along unintentionally.
  • an elastic spring 13 designed as a spiral spring is arranged coaxially to the central part 7 and exerts a compressive force between the central part 7 and the blocking part 9, by means of which, in the absence of other influences, the blocking part 9 is displaced from the blocking position into the position in which he opens pivoting of the jaws 8 releases.
  • a flexible traction means 14 (cord, rope, band) which is connected directly to the blocking part 9 is used to prevent the unintentional opening of the tension connection between the connecting part 1 and the holding assembly 2 and is led out of the housing 3 from that opening in the vicinity of which those lever arms of the jaws 8 are located, between which the part-spherical extension 6 is held.
  • the blocking part 9 is held in the blocking position between the jaws 8, even if the connection part 1 is pulled away from the holding assembly 2 very strongly.
  • a flexible traction means 15 is not directly connected to the blocking part 9, but indirectly via a bracket 16, which typically consists of stiff wire.
  • the bracket 16 is connected directly to the blocking part 9 on the one hand and also directly to the flexible traction mechanism 15 on the other.
  • the bracket 16 When the blocking part 9 is in the blocking position, the bracket 16 preferably extends from the blocking part 9 to the end face of the opening of the housing 3, so that it can rest against the end face of the opening of the housing 3. This means that the person using the clutch can visually see whether the clutch is in the blocked (closed) position and that the holding force that this person has to exert to hold the clutch in the blocked position only has to be very small.
  • lever arms of the jaws 8 between which the part-spherical extension 6 is to be held are preferably subjected to a force by an elastic, elastically pretensioned drive, for example a tensioned rubber ring 17, which moves these lever arms towards one another in the absence of other influences.
  • an elastic, elastically pretensioned drive for example a tensioned rubber ring 17, which moves these lever arms towards one another in the absence of other influences.
  • the free ends of those lever arms of the jaws 8, between which the part-spherical extension 6 is to be held, are provided with a run-in bevel 18 on the sides facing one another, so that together they delimit a kind of hollow truncated cone, into which the part-spherical extension 6 can be inserted and which - if this is not prevented by the blocking part 9 - expands when inserting the part-spherical extension 6 against the action of said elastic prestressed drive.
  • the inlet bevel 18 makes it very easy to couple the connection part 1 to the holding assembly 2 even when the holding assembly—as illustrated—is almost completely surrounded by a housing 3 .
  • the housing 3 can thus be designed as a very robust protection for the holding assembly 2 . At the same time, the housing 3 thus also offers very reliable protection against persons being able to injure themselves on moving parts of the holding assemblies.
  • FIG. 4 shows an example of an embodiment of a clutch according to the invention, in which the blocking part 19 is held in the blocking position on the jaws 8, without a permanent action by a human being, such as the described pulling on a flexible traction means, being required.
  • the blocking part 19 is displaced by a prestressed elastic spring 20, which is clamped between the blocking part 19 and the central part 7, in the absence of other forces in such a way that it protrudes into that path of movement which parts of the jaws 8 travel through when the jaws 8 are pivoted in such a way, that the pliers mouth 11 is opened.
  • the opening movement of the jaws 8 is automatically blocked by the action of the elastic spring 20 .
  • the blocking part 19 In order to still be able to release the coupling between the part-spherical extension 6 of the connecting part 1 and the jaws 8 of the holding assembly 2, the blocking part 19 must be pushed away from the connecting part 1 along the central part 7 against the spring force of the pretensioned elastic spring 20. in the in 4 In the illustrated case, the blocking part 19 is rigidly connected to a slender, funnel-like extension 21 which encloses the jaws 8 in the manner of a housing and whose outer surface is freely accessible. In order to release the connection between the connection part 1 and the holding assembly 2, the funnel-like extension 21 can simply be grasped with one hand and pushed away from the connection part 1.
  • the blocking part 19 can also be released automatically, for example by the movement of the drag lift bringing the coupling closer to a type of fork with wedge-shaped tines in such a way that the wedge-shaped tines fit between the funnel-like extension 21 and protrude the connection part 1 and force a relative movement of the funnel-like extension 21 from the connection part 1, whereby the coupling is opened.
  • an additional device can be attached to the clutch according to the invention, which permanently prevents the releasing movement of the blocking part 9, 19 and can only be removed again with considerable (force) effort.
  • a lift bar like him used for moving people equipped with skis, can be held permanently on the holding assembly 2 during the ski season.
  • Such an additional device can typically be formed by a pin which runs transversely to the otherwise possible direction of movement of the blocking part 9, 19 through this and through the central part 7 and can only be removed again with considerable effort.
  • the blocking part that limits the opening movement of those pivoting jaws that clamp the jaw 11, in which the part-spherical extension 6 can be optionally clamped can also act in that longitudinal area of the levers forming the jaws in which the clamp mouth is located.
  • the blocking part can be designed as a kind of ring which encircles the jaws and rests on the outside of the jaws in the blocked position.
  • the jaws then do not need to be designed as two-armed levers, but can each be designed as one-armed levers.
  • the design can be particularly advantageous in applications where the dimensions of the coupling in the pulling direction should be as short as possible.
  • levers representing the jaws have two arms
  • two opposite levers can be arranged and mounted like the arms of a pair of pliers, so that when viewed with the pivot axes—or when viewed with the common pivot axis—they cross one another.
  • the blocking part which acts on the longitudinal areas of the levers facing away from the jaws of the pliers, must then act on the outside of the levers, and can therefore in turn be designed as a kind of ring which encircles the levers.
  • the construction shown in the drawings is more advantageous, according to which the jaws 8, designed as two-armed levers, do not cross one another when viewed from a direction parallel to the pivot axes.
  • the blocking part 9, 19 can then namely to block between the Jaws are pushed in and is only subject to pressure and not to train or bending. In this way, it can be made statically sufficiently stable with less effort.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
EP21020595.1A 2020-11-29 2021-11-25 Accouplement pour forces de traction Withdrawn EP4005898A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT603542020 2020-11-29
ATA67/2021A AT524513A1 (de) 2020-11-29 2021-03-26 Kupplung für Zugkräfte

Publications (1)

Publication Number Publication Date
EP4005898A1 true EP4005898A1 (fr) 2022-06-01

Family

ID=78789588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21020595.1A Withdrawn EP4005898A1 (fr) 2020-11-29 2021-11-25 Accouplement pour forces de traction

Country Status (1)

Country Link
EP (1) EP4005898A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1505962A1 (de) 1965-01-27 1969-07-10 Arnold & Richter Kg Festklemm- und Ausloese- Vorrichtung
DE1815531A1 (de) 1967-12-19 1969-08-14 Henri Rey Vorrichtung zum Ankuppeln eines Skibobs an einen Skilift
AT283127B (de) 1968-02-26 1970-07-27 Anton Hassler Vorrichtung zum Anhängen eines Transportmittels an einen Bügel eines Bügelskiliftes
US3837290A (en) 1973-07-19 1974-09-24 Doppelmayr K & Sohn Fa Device for connecting a sporting device, transport device or the like to the towrope of a tow lift
DE8317802U1 (de) * 1983-06-18 1985-05-02 Gund, Willy, 7000 Stuttgart Anleinvorrichtung fuer tiere, insbesondere fuer hunde
FR2601637A2 (fr) 1986-01-02 1988-01-22 Tranvoiz Rene Systeme d'accrochage pour la remontee mecanique ou la traction d'un cycle ou autre objet roulant
EP0182723B1 (fr) 1984-11-23 1989-07-05 Jean Perrin Dispositif de liaison entre un câble tracteur et un cycle, applicable notamment aux remonte-pente pour assurer la remontée, en dehors de la saison hivernale, de cycles
FR2735739A1 (fr) * 1995-06-22 1996-12-27 Timmermans Patrick Dispositif pour l'entrainement d'un corps au moyen d'une pince
US20150298707A1 (en) * 2012-11-01 2015-10-22 Rider Developments Limited Towing apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1505962A1 (de) 1965-01-27 1969-07-10 Arnold & Richter Kg Festklemm- und Ausloese- Vorrichtung
DE1815531A1 (de) 1967-12-19 1969-08-14 Henri Rey Vorrichtung zum Ankuppeln eines Skibobs an einen Skilift
AT283127B (de) 1968-02-26 1970-07-27 Anton Hassler Vorrichtung zum Anhängen eines Transportmittels an einen Bügel eines Bügelskiliftes
US3837290A (en) 1973-07-19 1974-09-24 Doppelmayr K & Sohn Fa Device for connecting a sporting device, transport device or the like to the towrope of a tow lift
DE8317802U1 (de) * 1983-06-18 1985-05-02 Gund, Willy, 7000 Stuttgart Anleinvorrichtung fuer tiere, insbesondere fuer hunde
EP0182723B1 (fr) 1984-11-23 1989-07-05 Jean Perrin Dispositif de liaison entre un câble tracteur et un cycle, applicable notamment aux remonte-pente pour assurer la remontée, en dehors de la saison hivernale, de cycles
FR2601637A2 (fr) 1986-01-02 1988-01-22 Tranvoiz Rene Systeme d'accrochage pour la remontee mecanique ou la traction d'un cycle ou autre objet roulant
FR2735739A1 (fr) * 1995-06-22 1996-12-27 Timmermans Patrick Dispositif pour l'entrainement d'un corps au moyen d'une pince
US20150298707A1 (en) * 2012-11-01 2015-10-22 Rider Developments Limited Towing apparatus

Similar Documents

Publication Publication Date Title
DE1482482A1 (de) Einstellvorrichtung an einem Dreipunktgestaenge zum Anbau eines landwirtschaftlichen Geraetes an einen Schlepper
DE1919472A1 (de) Werkzeug zum Spannen eines einem Gegenstand umgelegten Bandes und zum Verbinden und Abschneiden der Bandenden
DE19504591C2 (de) Zuggabel
DE3314099A1 (de) Gefaessstauer mit einer gurtschnalle und einem staugurt
EP4005898A1 (fr) Accouplement pour forces de traction
CH638140A5 (en) Trailer hitch for a vehicle
DE3026418A1 (de) Loesbare verbindung fuer haustierleinen, sicherheitsleinen o.dgl.
AT524513A1 (de) Kupplung für Zugkräfte
DE102009059243A1 (de) Halteeinrichtung für einen Kite
DE1198261B (de) Sicherheits-Skibindung
DE2708329A1 (de) Selbstausloesende sicherheitsskibindung
EP1516810B1 (fr) Dispositif de contrôle pour une aile de traction
DE102021104882A1 (de) Verbindungsglied zur Befestigung einer Gleitschutzvorrichtung an einem Fahrzeugrad
EP2268995B1 (fr) Dispositif pour accrocher l élément d accrochage de la bande en caoutchouc d un harpon à bande en caoutchouc à la tige du harpon
EP0081740A2 (fr) Dispositif obstétrique pour animaux
DE4427036C2 (de) Vorrichtung zum lösbaren Verbinden eines Anhängers mit einem Zugfahrzeug
DE8117896U1 (de) Schwenkbare laufrolle mit automatischer arretiervorrichtung
EP2189196B1 (fr) organe d'actionnement pour fixation de ski
AT145539B (de) Skibindung.
EP0108866B2 (fr) Dispositif de vêlage
DE941650C (de) Dreipunkt-Tragvorrichtung fuer landwirtschaftliche Geraete an Schleppern
DE561673C (de) Kettenkupplung
EP0996403A1 (fr) Dispositif pour fixer de maniere detachable une civiere sur un chariot approprie
EP1405611B1 (fr) Appareil pour aider à la parturition des bestiaux
AT236264B (de) Sicherheitsskibindung

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

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

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: 20221202