EP2575420A1 - Implement with retractable transport wheel - Google Patents

Implement with retractable transport wheel

Info

Publication number
EP2575420A1
EP2575420A1 EP11722465.9A EP11722465A EP2575420A1 EP 2575420 A1 EP2575420 A1 EP 2575420A1 EP 11722465 A EP11722465 A EP 11722465A EP 2575420 A1 EP2575420 A1 EP 2575420A1
Authority
EP
European Patent Office
Prior art keywords
arm
articulated arm
articulated
support
garden equipment
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Withdrawn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
EP11722465.9A
Other languages
German (de)
French (fr)
Inventor
Nicolas Gerbaud
Peter Vion
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.)
Pubert Henri Sas
Original Assignee
Pubert Henri Sas
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 Pubert Henri Sas filed Critical Pubert Henri Sas
Publication of EP2575420A1 publication Critical patent/EP2575420A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/02—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on horizontal shaft transverse to direction of travel
    • A01B33/028—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on horizontal shaft transverse to direction of travel of the walk-behind type

Definitions

  • the invention relates to garden equipment with retractable transport wheel, in particular walk-behind garden equipment.
  • the invention also relates to retractable transport wheel devices for garden equipment.
  • a retractable transport wheel device for garden equipment is intended to facilitate the maneuvering operations of the garden equipment on which the device is mounted.
  • Such garden equipment is for example a tiller, a tiller, a brushcutter or any equivalent equipment.
  • a retractable transport wheel device comprising a support for attaching the device to the garden equipment and an articulated arm pivotally mounted relative to the mounting bracket and carrying a transport wheel.
  • the articulated arm is adapted to be moved, once the device is fixed to the equipment of motoculture, at least a first position, said transport position, wherein said wheel rests on the ground, at least a second position, said working position, wherein said wheel is not in contact with the ground.
  • the device comprises means for locking the articulated arm in the transport position and in the working position.
  • the operator operating the garden equipment for example a tiller
  • the tiller can be operated and the tools that generally provide such a garden equipment can be put into action to garden the area without being bothered by the presence of the wheel.
  • US 6,494,270 discloses garden equipment equipped with a retractable transport wheel device.
  • This device comprises a hydraulic cylinder adapted to actuate the articulated arm carried by the mounting bracket.
  • This hydraulic cylinder also serves as locking means of the articulated arm in the transport and work positions.
  • This device is not very suitable for mass market machinery that is generally free of hydraulic controls. Such a device is therefore reserved for garden equipment for professional farmers.
  • this retractable transport wheel device can not be maneuvered easily by an operator. It requires access to the hydraulic control.
  • Such a device comprises an articulated arm which carries, in the vicinity of the end cooperating with the pivot axis, lugs adapted to be housed in notches formed in the mounting bracket.
  • a first pair of notches define the transport position and a second pair of notches defines the working position.
  • the stalls of the articulated arm of the second pair of notches defining the working position are possible.
  • a garden equipment is intended to plow or garden rocky or at least earthy grounds and is subjected to many vibrations. It is therefore common for such a device to get off its working position during gardening on difficult terrain, despite the presence of the locking means that form the notches and lugs.
  • the articulated arm pivots violently from its working position to the transport position, potentially breaking the axle shaft, or even injuring someone.
  • Such a device is not very reliable in practice.
  • the aim of the invention is to overcome at least some of the disadvantages of known retractable conveyor wheel machinery.
  • the invention aims to provide, in at least one embodiment, a garden equipment with retractable transport wheel that allows a quick retraction of the transport wheel from the transport position to the working position, and vice versa .
  • the invention also aims to provide, in at least one embodiment, a garden equipment with retractable transport wheel which does not present a risk of stalling the articulated arm from the working position to the transport position.
  • the invention also aims to provide, in at least one embodiment of the invention, a garden equipment transport retractable transport wheel easy to maneuver.
  • the invention also aims to provide, in at least one embodiment, a motoculture equipment retractable transport wheel economical to manufacture. 4. Presentation of the invention
  • the invention proposes a retractable transport wheel motorization equipment (4) comprising a support (1) for attaching an articulated arm (2) intended to carry said transport wheel (4), characterized in that that the fixing support comprises at least one oblong slot, called guide light, adapted to receive a guide pin secured to said articulated arm and able to move in said oblong guide slot during movement of said articulated arm of a position transport to a work position and vice versa.
  • the fixing support comprises at least one oblong slot, called guide light, adapted to receive a guide pin secured to said articulated arm and able to move in said oblong guide slot during movement of said articulated arm of a position transport to a work position and vice versa.
  • the operation of the articulated arm is facilitated by guiding the pivoting of the articulated arm from the transport position to the working position, and vice versa, and obtained by the displacement of at least one integral guide pin of the arm. articulated in an oblong guiding slot formed in the fixing support. Such guidance makes the retraction of the transport wheel faster and easier than in the known garden equipment.
  • the guiding light is adapted to form with the guide pin locking means of the articulated arm in the working position.
  • the invention thus limits the risks of spontaneous tipping, inherent to the solutions where the holding in position relies exclusively on a notched system.
  • the guiding light has a shape and dimensions shaped and conjugate to the shape and dimensions of the guide pin to be able to form means for locking the articulated arm in the working position.
  • This guide light has for example a shape delimited by a border comprising a portion against which can abut the guide pin and thus oppose the pivoting of the articulated arm from the working position to the transport position.
  • this portion against which can abut the tenon is a non-vertical portion which thus opposes the pivoting of the articulated arm under the effect of the weight of the wheel, thus blocking the articulated arm in the working position.
  • the material in which the guide pin and the peripheral edge of the guide light are made can also participate in the blocking by providing a significant coefficient of friction between the post and the edge of the light.
  • the tenon and the guiding light have shapes and dimensions adapted so that said pin can enter, in said transport position, in abutment against a portion of the fixing support delimiting a first end of the guiding light, and in the working position in abutment against a portion of the fixing bracket delimiting the opposite end of the guide light.
  • said articulated arm :
  • sliding slot has at least one oblong slot, called sliding slot, through which the pivot shaft passes so that the articulated arm can slide on the pivot shaft during the displacement of the articulated arm from a transport position to a position working and vice versa.
  • Pivoting the articulated arm from the transport position to the working position is performed around a pivot shaft secured to the mounting bracket.
  • the articulated arm further has a sliding slot through which the pivot shaft passes.
  • the guide light has a shape that makes it possible to pivot the articulated arm only if the arm and the pivot shaft can move relative to each other. This pivoting is made possible according to this variant, regardless of the shape of the guide light, by the presence of at least one sliding slot.
  • the guiding light is an arc of a circle, centered on the pivot shaft, it is not necessary to have a sliding light, the pivoting of the arm being possible independently of a relative movement between the articulated arm and the pivot shaft.
  • the pivoting of the articulated arm requires the presence of at least one sliding slot to allow relative movement of the articulated arm and the pivot shaft.
  • each oblong sliding slot extends along a direction, called the longitudinal direction, and the pivot shaft passes through each light in a transverse direction.
  • This longitudinal shape of the sliding light allows the device to operate regardless of the shape of the guide lights.
  • the articulated arm can slide longitudinally along the pivot shaft regardless of the displacement of the guide pin in the guide light.
  • the retractable transport wheel device comprises at least one spring mounted between the pivot shaft and the articulated arm so that it can oppose the spontaneous sliding of the articulated arm on the pivot shaft.
  • the spring cooperates with the guide light and the tenon to maintain the articulated arm in the working position, in the absence of an external force exerted by a manual operator.
  • this spring is mounted so that it can hold the pivot shaft in abutment against a longitudinal end of at least one sliding slot in the absence of a force exerted by an external operator.
  • the stud In the working position, the stud abuts on the non-vertical wall of the guide light and the spring holds the articulated arm so that it can not slide on the pivot shaft.
  • the articulated arm can not spontaneously rotate from the working position to the transport position.
  • the spring holds the pivot shaft against a longitudinal edge of the sliding lumen when the articulated arm is in the working position. In the absence of the spring, the articulated arm would slide along the pivot shaft so that the pivot shaft would approach the opposite edge of the sliding lumen, concomitant with the stall of the guide pin of the non-vertical portion of the guide light.
  • the spring thus improves the holding of the device by preventing inadvertent movements of the articulated arm relative to the pivot shaft and forms, with the guide pin and the guide lights, the means for locking the articulated arm in the working position.
  • each guiding light extends in a plane substantially parallel to the plane in which each sliding light extends.
  • This arrangement allows a device according to this variant to have a simple kinematics.
  • the articulated arm is pivotally mounted relative to the attachment support at a first end of the arm, said proximal end, and carries the wheel at the opposite end, said distal end.
  • the pivot shaft is provided between the guide lights and the wheel.
  • the guide pin is a shaft extending on either side of the fixing support.
  • the mounting bracket can be of all types.
  • the support comprises a rail having a U-shaped cross section, at least one of the side walls of said rail carrying an oblong guide slot.
  • the fixing support comprises two sections each having an L-shaped transverse cross-section, an oblong guiding slot being formed in each section.
  • the wheel device comprises two guide slots formed in said fixing bracket facing one another.
  • these two guide lights are respectively arranged on each of the profiles of the fixing support.
  • the proximal end of the articulated arm is housed between the two sections of the fixing support.
  • the articulated arm comprises a fork formed of two parallel wings.
  • Such a fork has the advantage that it can be machined simply, which makes the device economical to manufacture.
  • the latter is preferably housed between the two parallel wings of the fork.
  • This arrangement prevents the spring is detached or breaks, being housed inside the fork between the two parallel wings of the fork.
  • such an arrangement has a general aesthetic improved compared to devices of the prior art.
  • the articulated arm comprises a shaft parallel to said pivot shaft arranged transversely between the flanges of the fork and on which the distal end of the spring is mounted, the proximal end being fixed on said shaft of pivoting.
  • the arm comprises an articulated fork formed of two parallel wings.
  • the pivot shaft passes through the wings at the proximal end of the articulated arm.
  • the distal shaft is housed between the wings at the distal end of the arm, so that the spring can be housed between the two shafts and attached thereto.
  • the wheel is mounted on the articulated arm along an axis parallel to said pivot axis.
  • the axis of the wheel is parallel to the pivot shaft, which simplifies the kinematics of the device.
  • the invention also extends to a garden equipment equipped with a retractable transport wheel device according to the invention.
  • the attachment support can be an integral part of the garden equipment.
  • the equipment may comprise a chassis incorporating a rail or L-shaped profiles that act as a mounting bracket, in which guide lights and projections are provided. bores for receiving the pivot shaft.
  • the invention also relates to a retractable transport wheel device and a garden equipment equipped with such a wheel device characterized in combination by all or part of the characteristics mentioned above or below.
  • FIG. 1 is a schematic perspective view of a garden equipment according to one embodiment of the invention on which is mounted a retractable transport wheel device according to one embodiment of the invention
  • FIG. 2 is a schematic perspective view of a device according to an embodiment of the invention provided with an articulated arm represented in a transport position,
  • FIG. 3 is a schematic perspective view of the device of FIG. 2 on which the articulated arm is in a working position
  • FIG. 4 is a schematic perspective view of the device of FIGS. 2 and 3 in which the articulated arm is in an intermediate position between the transport position of FIG. 2 and the working position of FIG. 3;
  • FIG. 5 is a schematic side view of a device according to one embodiment of the invention provided with an articulated arm and represented in a transport position,
  • FIG. 6 is a schematic side view of the device of FIG. 5 on which the articulated arm is in a working position
  • FIG. 7 is a diagrammatic side view of the device of FIGS. 5 and 6 in which the articulated arm is in an intermediate position between the transport position of FIG. 5 and FIG. working position of Figure 6,
  • FIG. 8 is a schematic view of a device according to an embodiment provided with an articulated arm partially shown to reveal a locking spring, the arm being in a transport position,
  • FIG. 9 is a partial schematic view of the device of FIG. 8, in which the articulated arm partially shown to reveal the spring is in a working position,
  • FIG. 10 is a partial schematic view of the device of Figures 8 and 9, wherein the articulated arm partially shown to reveal the spring is in an intermediate position between the transport position of Figure 8 and the working position of the Figure 9 is not fully shown to reveal the spring.
  • each part of the retractable transport wheel device is described as it is arranged when the device is mounted on a garden equipment resting on a horizontal flat surface. This arrangement is shown in particular in FIGS. 1 and 2.
  • proximal and distal are used relative to the fixation support, when the articulated arm is in the transport position.
  • a proximal end of a workpiece is an end of the workpiece in the vicinity of the attachment support, when the articulated arm is in the transport position, while a distal end of the workpiece is a far end of the workpiece support. when the articulated arm is in the transport position.
  • a retractable transport wheel device according to a preferred embodiment of the invention comprises as shown in FIGS. support 1 for attaching the device to the garden equipment.
  • Such garden equipment can be of all types. It can be a tiller as shown in Figure 1, or a tiller, a brush cutter or any equivalent agricultural equipment.
  • This mounting bracket can, according to some embodiments, be integrated directly on the equipment motoculture during the manufacture of garden equipment. It is also possible to machine part of a pre-existing garden equipment to make a mounting bracket of a device according to the invention.
  • a device according to the invention also comprises an articulated arm 2 pivotally mounted relative to the support 1 for fixing around a pivoting shaft 8.
  • the articulated arm further carries at its distal end, a wheel 4 of transport.
  • the articulation of the arm around the pivoting shaft 8 makes it possible to move the transport wheel from a first position, called the transport position, in which said wheel rests on the ground, to at least a second position, called the position of in which said wheel is not in contact with the ground.
  • Figures 2, 5 and 8 show the articulated arm 2 and the wheel 4 in the transport position.
  • FIGS 3, 6 and 9 showing the articulated arm 2 and the wheel 4 in the working position.
  • Figures 4, 7 and 10 show the articulated arm 2 and the wheel 4 in a position, said intermediate position, between the transport position and the working position of Figures 3, 6 and 9.
  • the fixing support is according to the embodiment of the figures formed of two sections 6, 7 each having a cross section L-shaped cross.
  • the profile 6 comprises a horizontal wall 61 intended to abut against the garden equipment and adapted to receive fastening means, for example of the screw-nut type, for fixing the profile 6 on the equipment.
  • this horizontal wall 61 includes lights 62 allowing the passage of fastening means of the screw-nut type, the garden equipment being provided with lights facing to also receive these fixing means of the screw-nut type.
  • the profile 7 similarly comprises a horizontal wall 71 having lights for the passage of fastening means for securing this profile to the equipment motoculture.
  • these profiles can be pre-existing profiles of the garden equipment on which it is machined the attachment means of the arm 2 articulated on these profiles.
  • these profiles 6 and 7 can be an integral part of the chassis of the equipment.
  • the horizontal walls 61, 71 can serve as motor attachment interface of the garden equipment.
  • the walls 63, 73 vertical, which form a right angle with the walls 61, 71 horizontal define a receiving space of the proximal end of the articulated arm 2.
  • These vertical walls 63, 73 form bearings for receiving a pivoting shaft 8 of the articulated arm 2, extending on either side of the walls 63, 73.
  • Each wall 63, 73 vertical further comprises a light 64 long guide ob.
  • This oblong slot 64 receives a guide pin 9.
  • the oblong slots 64 are formed in the chassis.
  • the slots 64 oblong walls 63, 73 are arranged facing each other so that the guide pin 9 can extend horizontally on either side of the two walls 63, 73 vertical, passing through the guide lights 64.
  • Each guide light 64 has a general half-hexagon shape.
  • the width of the guide light 64 is for example 10% greater than the diameter of the guide post 9. Such a proportion allows the guide pin 9 to move in the guide light but without introducing too much play.
  • the guide light 64 is formed in each wall 63, 73 vertical so that the main direction of the light forms with the vertical an angle of 10 ° to 30 °.
  • This guide light 64 has a shape adapted so that the guide pin 9 can enter, in said transport position, abutting against a portion of the fixing support delimiting a first end of this guide light, and in the working position. in abutment against a portion of the fixing support delimiting the opposite end of this guide light.
  • the end zones of the guide light 64 also form, with the guide post 9, means for locking the articulated arm 2 in the working position.
  • the articulated arm 2 comprises a fork 10.
  • This fork 10 comprises two wings 11, 12 parallel.
  • the proximal end of the wings 11, 12 are traversed by the guide pin 9.
  • This guide pin 9 is fixed relative to the wings 11, 12 of the arm 2 hinged.
  • Each wing further comprises an oblong slot, called sliding slot 13, through which the pivoting shaft 8 passes.
  • Each light extends generally in the main direction of the fork 10.
  • the articulated arm 2 can thus slide on the pivoting shaft 8 during the movement of the articulated arm 2 from the transport position to the working position and vice versa.
  • the guide pin 9 being constrained in its movements by the guide lights 64, the pivoting of the articulated arm 2 is only possible if the articulated arm 2 can slide on the pivot shaft 8.
  • FIGs 4, 7 and 10 show the articulated arm 2 in an intermediate position between the transport position and work and on which we can observe the relative displacement of the pivot shaft 8 in the sliding slots 13.
  • a spring 14 is further arranged between the two wings 11, 12 of the fork 10.
  • the proximal end of the spring 14 is fixed to the pivot shaft 8 and the distal end of the spring 14 is fixed to a shaft 15. extending between the two wings 11, 12 of the fork and fixed relative thereto.
  • the spring 14 is chosen so that it is in slight traction, when the pivoting shaft 8 is in abutment against the distal end of the lumen 13.
  • FIGs 8, 9 and 10 show the spring 14 during the displacement of the articulated arm 2 from the transport position to the working position.
  • the spring 14 is in a slightly tensile position to hold the pivot shaft 8 against the distal end of the sliding lumen 13.
  • the stiffness of the spring must be sufficient to prevent spontaneous pivoting of the articulated arm 2 from the working position, as shown in FIG. 9, to the transport position, as represented in FIG. 8.
  • Simple routine tests allow the skilled person to determine the stiffness of the spring 14 compatible with the weight of the wheel and the articulated arm used.
  • the articulated arm 2 further comprises an axle 16 carrying the wheel 4.
  • axle 16, the shaft 15, the pivot shaft 8 and the guide pin 9 are all parallel.
  • a retractable transport wheel device may comprise an articulated arm formed of a flat shaft comprising a sliding slot traversed by a pivot shaft.
  • the fixing support comprises a single guiding light arranged cooperating with a tenon of guidance carried by the flat shaft.
  • Such a device can for example equip small equipment light agricultural.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Handcart (AREA)
  • Jib Cranes (AREA)

Abstract

The invention relates to a mechanized farming implement with a retractable transport wheel comprising a support (1) for attaching an articulated arm (2) intended to bear said transport wheel (4). According to the invention, the attachment support (1) comprises at least one oblong slot, known as a guide slot (64), designed to accept a guide pin (9) secured to said articulated arm (2) and able to move in said oblong guide slot (64) as said articulated arm (2) is moved from a transport position into a work position and vice versa. By virtue of the invention, the articulated arm is easier to manoeuvre because the articulated arm is guided in its pivoting from the transport position into the work position and vice versa, making retraction of the transport wheel easier and quicker than in known mechanized farming implements.

Description

Equipement à roue de transport escamotable  Equipment with retractable transport wheel
1. Domaine technique de l'invention 1. Technical field of the invention
L'invention concerne les équipements de motoculture à roue de transport escamotable, en particulier les équipements de motoculture à conducteur marchant. L'invention concerne également les dispositifs à roue de transport escamotable pour équipements de motoculture.  The invention relates to garden equipment with retractable transport wheel, in particular walk-behind garden equipment. The invention also relates to retractable transport wheel devices for garden equipment.
2. Arrière-plan technologique  2. Technological background
Un dispositif à roue de transport escamotable pour équipement de motoculture est destiné à faciliter les opérations de manœuvre de l'équipement de motoculture sur lequel le dispositif est monté. Un tel équipement de motoculture est par exemple une motobineuse, un motoculteur, une débroussailleuse ou tout équipement équivalent.  A retractable transport wheel device for garden equipment is intended to facilitate the maneuvering operations of the garden equipment on which the device is mounted. Such garden equipment is for example a tiller, a tiller, a brushcutter or any equivalent equipment.
Il est connu de monter sur un équipement de motoculture un dispositif à roue de transport escamotable comprenant un support de fixation du dispositif à l'équipement de motoculture et un bras articulé monté pivotant par rapport au support de fixation et portant une roue de transport.  It is known to mount on a garden equipment a retractable transport wheel device comprising a support for attaching the device to the garden equipment and an articulated arm pivotally mounted relative to the mounting bracket and carrying a transport wheel.
Le bras articulé est adapté pour être déplacé, une fois le dispositif fixé à l'équipement de motoculture, d'au moins une première position, dite position de transport, dans laquelle ladite roue repose sur le sol, à au moins une deuxième position, dite position de travail, dans laquelle ladite roue n'est pas en contact avec le sol.  The articulated arm is adapted to be moved, once the device is fixed to the equipment of motoculture, at least a first position, said transport position, wherein said wheel rests on the ground, at least a second position, said working position, wherein said wheel is not in contact with the ground.
De plus, le dispositif comprend des moyens de blocage du bras articulé dans la position de transport et dans la position de travail.  In addition, the device comprises means for locking the articulated arm in the transport position and in the working position.
Ainsi, dans la position de transport, l'opérateur manoeuvrant l'équipement de motoculture, par exemple une motobineuse, peut aisément la déplacer d'un hangar de stockage à une zone à jardiner. Dans la position de travail, la motobineuse peut être actionnée et les outils qui pourvoient en général un tel équipement de motoculture peuvent être mis en action pour jardiner la zone, sans qu'ils soient gênés par la présence de la roue. Le document de brevet US 6 494 270 décrit un équipement de motoculture équipé d'un dispositif à roue de transport escamotable. Ce dispositif comprend un vérin hydraulique adapté pour actionner le bras articulé porté par le support de fixation. Ce vérin hydraulique fait aussi office de moyens de blocage du bras articulé dans les positions de transport et de travail. Thus, in the transport position, the operator operating the garden equipment, for example a tiller, can easily move it from a storage shed to a garden area. In the working position, the tiller can be operated and the tools that generally provide such a garden equipment can be put into action to garden the area without being bothered by the presence of the wheel. US 6,494,270 discloses garden equipment equipped with a retractable transport wheel device. This device comprises a hydraulic cylinder adapted to actuate the articulated arm carried by the mounting bracket. This hydraulic cylinder also serves as locking means of the articulated arm in the transport and work positions.
Ce dispositif est peu adapté aux équipements de motoculture grand public qui sont en général dépourvus de commandes hydrauliques. Un tel dispositif est donc réservé aux équipements de motoculture destinés aux agriculteurs professionnels.  This device is not very suitable for mass market machinery that is generally free of hydraulic controls. Such a device is therefore reserved for garden equipment for professional farmers.
De plus, un tel dispositif est onéreux à fabriquer et à installer sur un équipement de motoculture.  In addition, such a device is expensive to manufacture and install on garden equipment.
En outre, ce dispositif à roue de transport escamotable ne peut pas être manœuvré facilement par un opérateur. Il nécessite l'accès à la commande hydraulique.  In addition, this retractable transport wheel device can not be maneuvered easily by an operator. It requires access to the hydraulic control.
II existe également sur le marché des dispositifs à roue de transport escamotable entièrement mécaniques. Un tel dispositif comprend un bras articulé qui porte, au voisinage de l'extrémité coopérant avec l'axe de pivotement, des ergots adaptés pour venir se loger dans des encoches ménagées dans le support de fixation. Une première paire d'encoches définit la position de transport et une seconde paire d'encoches définit la position de travail. Ainsi, pour passer de la position de transport à la position de travail, un opérateur saisit le bras articulé en exerçant une force dans le sens de pivotement pour déloger les ergots de la première paire d'encoches, puis déplace le bras articulé jusqu'à ce que les ergots viennent s'enclencher dans la deuxième paire d'encoches.  There are also on the market fully retractable transport wheel devices. Such a device comprises an articulated arm which carries, in the vicinity of the end cooperating with the pivot axis, lugs adapted to be housed in notches formed in the mounting bracket. A first pair of notches define the transport position and a second pair of notches defines the working position. Thus, to move from the transport position to the working position, an operator grasps the articulated arm by exerting a force in the pivoting direction to dislodge the lugs of the first pair of notches, and then moves the articulated arm to that the lugs come snap into the second pair of notches.
Cette solution présente différents inconvénients. En particulier, un tel dispositif ne permet pas un escamotage rapide de la roue. L'opérateur doit forcer sur le bras articulé pour déloger les ergots de la première paire d'encoches, puis pivoter le bras jusqu'à ce que les ergots s'enclenchent dans la seconde paire d'encoches. Le délogement des ergots de la première paire d'encoches qui définit la position de transport est en général difficile car la roue repose sur le sol, subissant ainsi une partie du poids de l'équipement de motoculture. En outre, les ergots présentent une forme et des dimensions conformés et conjugués aux encoches de sorte que le délogement des ergots ne puisse pas être spontané. Ceci permet de garantir qu'un délogement ne se produise pas au cours du déplacement de l'équipement, sous peine d'abîmer les outils de coupe de l'équipement. This solution has various disadvantages. In particular, such a device does not allow a quick retraction of the wheel. The operator must force the articulated arm to dislodge the lugs from the first pair of notches, and then pivot the arm until the lugs snap into the second pair of notches. The dislocation of the lugs of the first pair of notches which defines the transport position is in general difficult because the wheel rests on the ground, thus undergoing a part of the weight of the equipment motoculture. In addition, pins have a shape and dimensions consistent and conjugated to the notches so that dislodgement of the pins can not be spontaneous. This ensures that a dislodgement does not occur during the movement of the equipment, otherwise damage the cutting tools of the equipment.
En revanche, les décrochages du bras articulé de la seconde paire d'encoches définissant la position de travail sont possibles. En particulier, un équipement de motoculture est destiné à labourer ou jardiner des terrains rocailleux ou à tout le moins terreux et est soumis à de nombreuses vibrations. Il est donc fréquent qu'un tel dispositif décroche de sa position de travail au cours du jardinage sur un terrain difficile, malgré la présence des moyens de blocage que forment les encoches et les ergots. Dans ce cas, le bras articulé pivote violemment de sa position de travail à la position de transport, risquant de briser l'arbre de l'essieu, voire de blesser quelqu'un. Un tel dispositif n'est donc pas très fiable en pratique.  On the other hand, the stalls of the articulated arm of the second pair of notches defining the working position are possible. In particular, a garden equipment is intended to plow or garden rocky or at least earthy grounds and is subjected to many vibrations. It is therefore common for such a device to get off its working position during gardening on difficult terrain, despite the presence of the locking means that form the notches and lugs. In this case, the articulated arm pivots violently from its working position to the transport position, potentially breaking the axle shaft, or even injuring someone. Such a device is not very reliable in practice.
3. Objectifs de l'invention  3. Objectives of the invention
L'invention vise à pallier au moins certains des inconvénients des équipements de motoculture à roue de transport escamotable connus.  The aim of the invention is to overcome at least some of the disadvantages of known retractable conveyor wheel machinery.
En particulier, l'invention vise à fournir, dans au moins un mode de réalisation, un équipement de motoculture à roue de transport escamotable qui permet un escamotage rapide de la roue de transport de la position de transport à la position de travail, et inversement.  In particular, the invention aims to provide, in at least one embodiment, a garden equipment with retractable transport wheel that allows a quick retraction of the transport wheel from the transport position to the working position, and vice versa .
L'invention vise aussi à fournir, dans au moins un mode de réalisation, un équipement de motoculture à roue de transport escamotable qui ne présente pas de risque de décrochage du bras articulé de la position de travail à la position de transport.  The invention also aims to provide, in at least one embodiment, a garden equipment with retractable transport wheel which does not present a risk of stalling the articulated arm from the working position to the transport position.
L'invention vise aussi à fournir, dans au moins un mode de réalisation de l'invention, un équipement de motoculture à roue de transport escamotable facile à manœuvrer.  The invention also aims to provide, in at least one embodiment of the invention, a garden equipment transport retractable transport wheel easy to maneuver.
L'invention vise aussi à fournir, dans au moins un mode de réalisation, un équipement de motoculture à roue de transport escamotable économique à fabriquer. 4. Exposé de l'invention The invention also aims to provide, in at least one embodiment, a motoculture equipment retractable transport wheel economical to manufacture. 4. Presentation of the invention
Pour ce faire, l'invention propose un équipement de motoculture à roue de transport (4) escamotable comprenant un support (1) de fixation d'un bras (2) articulé destiné à porter ladite roue (4) de transport, caractérisé en ce que le support de fixation comprend au moins une lumière oblongue, dite lumière de guidage, adaptée pour recevoir un tenon de guidage solidaire dudit bras articulé et apte à se déplacer dans ladite lumière oblongue de guidage au cours du déplacement dudit bras articulé d'une position de transport à une position de travail et inversement.  To do this, the invention proposes a retractable transport wheel motorization equipment (4) comprising a support (1) for attaching an articulated arm (2) intended to carry said transport wheel (4), characterized in that that the fixing support comprises at least one oblong slot, called guide light, adapted to receive a guide pin secured to said articulated arm and able to move in said oblong guide slot during movement of said articulated arm of a position transport to a work position and vice versa.
Selon l'invention, la manœuvre du bras articulé est facilitée par un guidage du pivotement du bras articulé de la position de transport à la position de travail, et inversement, et obtenue par le déplacement d'au moins un tenon de guidage solidaire du bras articulé dans une lumière oblongue de guidage ménagée dans le support de fixation. Un tel guidage rend l'escamotage de la roue de transport plus rapide et plus facile que dans les équipements de motoculture connus.  According to the invention, the operation of the articulated arm is facilitated by guiding the pivoting of the articulated arm from the transport position to the working position, and vice versa, and obtained by the displacement of at least one integral guide pin of the arm. articulated in an oblong guiding slot formed in the fixing support. Such guidance makes the retraction of the transport wheel faster and easier than in the known garden equipment.
Dans un mode de réalisation particulièrement avantageux de l'invention, la lumière de guidage est adaptée pour former avec le tenon de guidage des moyens de blocage du bras articulé dans la position de travail.  In a particularly advantageous embodiment of the invention, the guiding light is adapted to form with the guide pin locking means of the articulated arm in the working position.
L'invention limite ainsi les risques de basculement spontané, inhérents aux solutions où le maintien en position repose exclusivement sur un système à encoches.  The invention thus limits the risks of spontaneous tipping, inherent to the solutions where the holding in position relies exclusively on a notched system.
En particulier, la lumière de guidage présente une forme et des dimensions conformées et conjuguées à la forme et aux dimensions du tenon de guidage pour pouvoir former des moyens de blocage du bras articulé dans la position de travail.  In particular, the guiding light has a shape and dimensions shaped and conjugate to the shape and dimensions of the guide pin to be able to form means for locking the articulated arm in the working position.
Cette lumière de guidage présente par exemple une forme délimitée par une bordure comprenant une portion contre laquelle peut venir buter le tenon de guidage et s'opposer ainsi au pivotement du bras articulé de la position de travail à la position de transport.  This guide light has for example a shape delimited by a border comprising a portion against which can abut the guide pin and thus oppose the pivoting of the articulated arm from the working position to the transport position.
Il existe un grand nombre de possibilités de formes et dimensions de la lumière de guidage et du tenon de guidage pour réaliser ces moyens de blocage.  There are a large number of possibilities of shapes and dimensions of the guiding light and the guide pin for producing these locking means.
Par exemple, cette portion contre laquelle peut venir buter le tenon est une portion non verticale qui s'oppose ainsi au pivotement du bras articulé sous l'effet du poids de la roue, bloquant ainsi le bras articulé dans la position de travail. Le matériau dans lequel est réalisé le tenon de guidage et la bordure périphérique de la lumière de guidage peut également participer au blocage en prévoyant un coefficient de frottement important entre le tenon et la bordure de la lumière. For example, this portion against which can abut the tenon is a non-vertical portion which thus opposes the pivoting of the articulated arm under the effect of the weight of the wheel, thus blocking the articulated arm in the working position. The material in which the guide pin and the peripheral edge of the guide light are made can also participate in the blocking by providing a significant coefficient of friction between the post and the edge of the light.
Selon une variante avantageuse de l'invention, le tenon et la lumière de guidage présente des formes et dimensions adaptées pour que ledit tenon puisse entrer, dans ladite position de transport, en butée contre une portion du support de fixation délimitant une première extrémité de la lumière de guidage, et dans la position de travail en butée contre une portion du support de fixation délimitant l'extrémité opposée de la lumière de guidage.  According to an advantageous variant of the invention, the tenon and the guiding light have shapes and dimensions adapted so that said pin can enter, in said transport position, in abutment against a portion of the fixing support delimiting a first end of the guiding light, and in the working position in abutment against a portion of the fixing bracket delimiting the opposite end of the guide light.
Avantageusement et selon l'invention, ledit bras articulé :  Advantageously and according to the invention, said articulated arm:
- est monté pivotant par rapport au support de fixation autour d'un arbre de pivotement fixe par rapport au support de fixation, is pivotally mounted relative to the fixing support around a fixed pivot shaft relative to the fixing support,
- présente au moins une lumière oblongue, dite lumière de coulissement, traversée par l'arbre de pivotement de sorte que le bras articulé puisse coulisser sur l'arbre de pivotement au cours du déplacement du bras articulé d'une position de transport à une position de travail et inversement. has at least one oblong slot, called sliding slot, through which the pivot shaft passes so that the articulated arm can slide on the pivot shaft during the displacement of the articulated arm from a transport position to a position working and vice versa.
Le pivotement du bras articulé de la position de transport à la position de travail est effectué autour d'un arbre de pivotement solidaire du support de fixation. Selon cette variante, le bras articulé présente en outre une lumière de coulissement traversée par l'arbre de pivotement. Ainsi, le bras articulé, au cours du pivotement peut coulisser sur l'arbre de pivotement. En particulier, selon une variante de l'invention, la lumière de guidage présente une forme qui ne rend possible le pivotement du bras articulé que si ce bras et l'arbre de pivotement peuvent se déplacer l'un par rapport à l'autre. Ce pivotement est rendu possible selon cette variante, quelle que soit la forme de la lumière de guidage, par la présence d'au moins une lumière de coulissement. En particulier, si la lumière de guidage est un arc de cercle, centré sur l'arbre de pivotement, il n'est pas nécessaire de disposer d'une lumière de coulissement, le pivotement du bras étant possible indépendamment d'un mouvement relatif entre le bras articulé et l'arbre de pivotement. En revanche, si la lumière de guidage présente une forme différente, le pivotement du bras articulé nécessite la présence d'au moins une lumière de coulissement pour permettre un déplacement relatif du bras articulé et de l'arbre de pivotement. Pivoting the articulated arm from the transport position to the working position is performed around a pivot shaft secured to the mounting bracket. According to this variant, the articulated arm further has a sliding slot through which the pivot shaft passes. Thus, the articulated arm, during pivoting can slide on the pivot shaft. In particular, according to a variant of the invention, the guide light has a shape that makes it possible to pivot the articulated arm only if the arm and the pivot shaft can move relative to each other. This pivoting is made possible according to this variant, regardless of the shape of the guide light, by the presence of at least one sliding slot. In particular, if the guiding light is an arc of a circle, centered on the pivot shaft, it is not necessary to have a sliding light, the pivoting of the arm being possible independently of a relative movement between the articulated arm and the pivot shaft. On the other hand, if the guide light has a different shape, the pivoting of the articulated arm requires the presence of at least one sliding slot to allow relative movement of the articulated arm and the pivot shaft.
Selon une variante avantageuse de l'invention, chaque lumière oblongue de coulissement s'étend le long d'une direction, dite direction longitudinale, et l'arbre de pivotement traverse chaque lumière selon une direction transversale.  According to an advantageous variant of the invention, each oblong sliding slot extends along a direction, called the longitudinal direction, and the pivot shaft passes through each light in a transverse direction.
Cette forme longitudinale de la lumière de coulissement permet au dispositif de fonctionner quelle que soit la forme des lumières de guidage. En particulier, selon ce mode de réalisation, le bras articulé peut coulisser longitudinalement le long de l'arbre de pivotement quel que soit le déplacement du tenon de guidage dans la lumière de guidage.  This longitudinal shape of the sliding light allows the device to operate regardless of the shape of the guide lights. In particular, according to this embodiment, the articulated arm can slide longitudinally along the pivot shaft regardless of the displacement of the guide pin in the guide light.
Selon une variante avantageuse de l'invention, le dispositif à roue de transport escamotable comprend au moins un ressort monté entre l'arbre de pivotement et le bras articulé de telle sorte qu'il puisse s'opposer au coulissement spontané du bras articulé sur l'arbre de pivotement.  According to an advantageous variant of the invention, the retractable transport wheel device comprises at least one spring mounted between the pivot shaft and the articulated arm so that it can oppose the spontaneous sliding of the articulated arm on the pivot shaft.
Le ressort coopère avec la lumière de guidage et le tenon pour maintenir le bras articulé en position de travail, en l'absence d'une force extérieure exercée par un opérateur manuel.  The spring cooperates with the guide light and the tenon to maintain the articulated arm in the working position, in the absence of an external force exerted by a manual operator.
Selon une variante avantageuse de l'invention, ce ressort est monté de telle sorte qu'il puisse maintenir l'arbre de pivotement en butée contre une extrémité longitudinale d'au moins une lumière de coulissement en l'absence d'une force exercée par un opérateur externe.  According to an advantageous variant of the invention, this spring is mounted so that it can hold the pivot shaft in abutment against a longitudinal end of at least one sliding slot in the absence of a force exerted by an external operator.
Dans la position de travail, le tenon bute sur la paroi non verticale de la lumière de guidage et le ressort maintient le bras articulé de telle sorte qu'il ne puisse pas coulisser sur l'arbre de pivotement. Ainsi, le bras articulé ne peut pas pivoter spontanément de la position de travail à la position de transport. Le ressort maintient l'arbre de pivotement contre une bordure longitudinale de la lumière de coulissement lorsque le bras articulé est dans la position de travail. En l'absence du ressort, le bras articulé coulisserait le long de l'arbre de pivotement de sorte que l'arbre de pivotement se rapprocherait de la bordure opposée de la lumière de coulissement, concomitamment avec le décrochage du tenon de guidage de la portion non verticale de la lumière de guidage. In the working position, the stud abuts on the non-vertical wall of the guide light and the spring holds the articulated arm so that it can not slide on the pivot shaft. Thus, the articulated arm can not spontaneously rotate from the working position to the transport position. The spring holds the pivot shaft against a longitudinal edge of the sliding lumen when the articulated arm is in the working position. In the absence of the spring, the articulated arm would slide along the pivot shaft so that the pivot shaft would approach the opposite edge of the sliding lumen, concomitant with the stall of the guide pin of the non-vertical portion of the guide light.
Le ressort améliore donc la tenue du dispositif en évitant les déplacements intempestifs du bras articulé par rapport à l'arbre de pivotement et forme, avec le tenon de guidage et les lumières de guidage, les moyens de blocage du bras articulé en position de travail.  The spring thus improves the holding of the device by preventing inadvertent movements of the articulated arm relative to the pivot shaft and forms, with the guide pin and the guide lights, the means for locking the articulated arm in the working position.
Selon une variante avantageuse de l'invention, chaque lumière de guidage s'étend dans un plan sensiblement parallèle au plan dans lequel s'étend chaque lumière de coulissement.  According to an advantageous variant of the invention, each guiding light extends in a plane substantially parallel to the plane in which each sliding light extends.
Cet agencement permet à un dispositif selon cette variante de présenter une cinématique simple.  This arrangement allows a device according to this variant to have a simple kinematics.
Selon une variante de l'invention, le bras articulé est monté pivotant par rapport au support de fixation au niveau d'une première extrémité du bras, dite extrémité proximale, et porte la roue au niveau de l'extrémité opposée, dite extrémité distale.  According to a variant of the invention, the articulated arm is pivotally mounted relative to the attachment support at a first end of the arm, said proximal end, and carries the wheel at the opposite end, said distal end.
L'arbre de pivotement est ménagé entre les lumières de guidage et la roue. Selon une variante avantageuse de l'invention, le tenon de guidage est un arbre s'étendant de part et d'autre du support de fixation.  The pivot shaft is provided between the guide lights and the wheel. According to an advantageous variant of the invention, the guide pin is a shaft extending on either side of the fixing support.
Le support de fixation peut être de tous types. Selon une variante de l'invention, le support comprend un rail présentant une section droite transversale en forme de U, au moins une des parois latérales dudit rail portant une lumière oblongue de guidage.  The mounting bracket can be of all types. According to a variant of the invention, the support comprises a rail having a U-shaped cross section, at least one of the side walls of said rail carrying an oblong guide slot.
Selon une autre variante avantageuse de l'invention, le support de fixation comprend deux profilés présentant chacun une section droite transversale en forme de L, une lumière oblongue de guidage étant ménagée dans chaque profilé.  According to another advantageous variant of the invention, the fixing support comprises two sections each having an L-shaped transverse cross-section, an oblong guiding slot being formed in each section.
Selon une variante avantageuse de l'invention, le dispositif à roue comprend deux lumières de guidage ménagées dans ledit support de fixation en regard l'une de l'autre.  According to an advantageous variant of the invention, the wheel device comprises two guide slots formed in said fixing bracket facing one another.
De préférence, ces deux lumières de guidage sont agencées respectivement sur chacun des profilés du support de fixation. Selon cette variante, l'extrémité proximale du bras articulé est logé entre les deux profilés du support de fixation. Preferably, these two guide lights are respectively arranged on each of the profiles of the fixing support. According to this variant, the proximal end of the articulated arm is housed between the two sections of the fixing support.
Selon une variante avantageuse de l'invention, le bras articulé comprend une fourche formée de deux ailes parallèles.  According to an advantageous variant of the invention, the articulated arm comprises a fork formed of two parallel wings.
Une telle fourche présente l'avantage de pouvoir être usiné simplement, ce qui rend le dispositif économique à fabriquer.  Such a fork has the advantage that it can be machined simply, which makes the device economical to manufacture.
Dans le cas ou le dispositif est muni d'un ressort, ce dernier est de préférence logé entre les deux ailes parallèles de la fourche.  In the case where the device is provided with a spring, the latter is preferably housed between the two parallel wings of the fork.
Cet agencement permet d'éviter que le ressort ne se décroche ou ne se casse, étant logé à l'intérieur de la fourche entre les deux ailes parallèles de la fourche. En outre, un tel agencement présente une esthétique générale améliorée par rapport aux dispositifs de l'art antérieur.  This arrangement prevents the spring is detached or breaks, being housed inside the fork between the two parallel wings of the fork. In addition, such an arrangement has a general aesthetic improved compared to devices of the prior art.
Selon une variante avantageuse de l'invention, le bras articulé comprend un arbre parallèle audit arbre de pivotement agencé transversalement entre les ailes de la fourche et sur lequel l'extrémité distale du ressort est montée, l'extrémité proximale étant fixée sur ledit arbre de pivotement.  According to an advantageous variant of the invention, the articulated arm comprises a shaft parallel to said pivot shaft arranged transversely between the flanges of the fork and on which the distal end of the spring is mounted, the proximal end being fixed on said shaft of pivoting.
Selon cette variante, le bras comprend une fourche articulée formée de deux ailes parallèles. L'arbre de pivotement traverse les ailes au niveau de l'extrémité proximale du bras articulé. L'arbre distal est logé entre les ailes au niveau de l'extrémité distale du bras, de telle sorte que le ressort puisse être logé entre les deux arbres et fixé à ces derniers.  According to this variant, the arm comprises an articulated fork formed of two parallel wings. The pivot shaft passes through the wings at the proximal end of the articulated arm. The distal shaft is housed between the wings at the distal end of the arm, so that the spring can be housed between the two shafts and attached thereto.
Selon une variante avantageuse de l'invention, la roue est montée sur le bras articulé selon un axe parallèle audit axe de pivotement.  According to an advantageous variant of the invention, the wheel is mounted on the articulated arm along an axis parallel to said pivot axis.
Selon cette configuration, l'axe de la roue est parallèle à l'arbre de pivotement, ce qui simplifie la cinématique du dispositif.  According to this configuration, the axis of the wheel is parallel to the pivot shaft, which simplifies the kinematics of the device.
L'invention s'étend également à un équipement de motoculture équipé d'un dispositif à roue de transport escamotable selon l'invention.  The invention also extends to a garden equipment equipped with a retractable transport wheel device according to the invention.
Selon une variante de l'invention, le support de fixation peut faire partie intégrante de l'équipement de motoculture. Par exemple, l'équipement peut comprendre un châssis intégrant un rail ou des profilés en L qui font office de support de fixation, dans lequel sont ménagées des lumières de guidage et des alésages pour recevoir l'arbre de pivotement. According to a variant of the invention, the attachment support can be an integral part of the garden equipment. For example, the equipment may comprise a chassis incorporating a rail or L-shaped profiles that act as a mounting bracket, in which guide lights and projections are provided. bores for receiving the pivot shaft.
L'invention concerne également un dispositif à roue de transport escamotable et un équipement de motoculture équipé d'un tel dispositif à roue caractérisée en combinaison par tout ou partie des caractéristiques mentionnées ci- dessus ou ci-après.  The invention also relates to a retractable transport wheel device and a garden equipment equipped with such a wheel device characterized in combination by all or part of the characteristics mentioned above or below.
5. Liste des figures  5. List of figures
D'autres buts, caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante donnée à titre uniquement non limitatif et qui se réfère aux figures annexées, dans lesquelles :  Other objects, features and advantages of the invention will become apparent on reading the following description given solely by way of nonlimiting example and which refers to the appended figures, in which:
- la figure 1 est une vue schématique en perspective d'un équipement de motoculture selon un mode de réalisation de l'invention sur lequel est monté un dispositif à roue de transport escamotable selon un mode de réalisation de l'invention,  FIG. 1 is a schematic perspective view of a garden equipment according to one embodiment of the invention on which is mounted a retractable transport wheel device according to one embodiment of the invention,
- la figure 2 est une vue schématique en perspective d'un dispositif selon un mode de réalisation de l'invention muni d'un bras articulé représenté dans une position de transport,  FIG. 2 is a schematic perspective view of a device according to an embodiment of the invention provided with an articulated arm represented in a transport position,
- la figure 3 est une vue schématique en perspective du dispositif de la figure 2 sur laquelle le bras articulé est dans une position de travail,  FIG. 3 is a schematic perspective view of the device of FIG. 2 on which the articulated arm is in a working position,
- la figure 4 est une vue schématique en perspective du dispositif des figures 2 et 3 sur laquelle le bras articulé est dans une position intermédiaire entre la position de transport de la figure 2 et la position de travail de la figure 3,  FIG. 4 is a schematic perspective view of the device of FIGS. 2 and 3 in which the articulated arm is in an intermediate position between the transport position of FIG. 2 and the working position of FIG. 3;
- la figure 5 est une vue schématique de côté d'un dispositif selon un mode de réalisation de l'invention muni d'un bras articulé et représenté dans une position de transport,  FIG. 5 is a schematic side view of a device according to one embodiment of the invention provided with an articulated arm and represented in a transport position,
- la figure 6 est une vue schématique de côté du dispositif de la figure 5 sur laquelle le bras articulé est dans une position de travail, FIG. 6 is a schematic side view of the device of FIG. 5 on which the articulated arm is in a working position,
- la figure 7 est une vue schématique de côté du dispositif des figures 5 et 6 sur laquelle le bras articulé est dans une position intermédiaire entre la position de transport de la figure 5 et la position de travail de la figure 6, FIG. 7 is a diagrammatic side view of the device of FIGS. 5 and 6 in which the articulated arm is in an intermediate position between the transport position of FIG. 5 and FIG. working position of Figure 6,
- la figure 8 est une vue schématique d'un dispositif selon un mode de réalisation muni d'un bras articulé partiellement représenté pour laisser apparaître un ressort de blocage, le bras étant dans une position de transport,  FIG. 8 is a schematic view of a device according to an embodiment provided with an articulated arm partially shown to reveal a locking spring, the arm being in a transport position,
- la figure 9 est une vue schématique partielle du dispositif de la figure 8, sur laquelle le bras articulé partiellement représenté pour laisser apparaître le ressort est dans une position de travail,  FIG. 9 is a partial schematic view of the device of FIG. 8, in which the articulated arm partially shown to reveal the spring is in a working position,
- la figure 10 est une vue schématique partielle du dispositif des figures 8 et 9, sur laquelle le bras articulé partiellement représenté pour laisser apparaître le ressort est dans une position intermédiaire entre la position de transport de le figure 8 et la position de travail de la figure 9, n'est pas totalement représenté pour laisser apparaître le ressort.  - Figure 10 is a partial schematic view of the device of Figures 8 and 9, wherein the articulated arm partially shown to reveal the spring is in an intermediate position between the transport position of Figure 8 and the working position of the Figure 9 is not fully shown to reveal the spring.
6. Description détaillée d'un mode de réalisation de l'invention6. Detailed description of an embodiment of the invention
Sur les figures, les échelles et les proportions ne sont pas strictement respectées et ce, à des fins d'illustration et de clarté. Figures, scales and proportions are not strictly adhered to for the purpose of illustration and clarity.
Dans toute la description détaillée qui suit en référence aux figures, sauf indication contraire, chaque pièce du dispositif à roue de transport escamotable est décrite telle qu'elle est agencée lorsque le dispositif est monté sur un équipement de motoculture reposant sur une surface plane horizontale. Cet agencement est représenté notamment sur les figures 1 et 2.  Throughout the following detailed description with reference to the figures, unless otherwise indicated, each part of the retractable transport wheel device is described as it is arranged when the device is mounted on a garden equipment resting on a horizontal flat surface. This arrangement is shown in particular in FIGS. 1 and 2.
Dans tout le texte, les termes « proximale » et « distale » sont utilisés par rapport au support de fixation, lorsque le bras articulé est dans la position de transport. Ainsi, une extrémité proximale d'une pièce est une extrémité de la pièce au voisinage du support de fixation, lorsque le bras articulé est dans la position de transport, alors qu'une extrémité distale de cette même pièce est une extrémité éloignée du support de fixation, lorsque le bras articulé est dans la position de transport.  Throughout the text, the terms "proximal" and "distal" are used relative to the fixation support, when the articulated arm is in the transport position. Thus, a proximal end of a workpiece is an end of the workpiece in the vicinity of the attachment support, when the articulated arm is in the transport position, while a distal end of the workpiece is a far end of the workpiece support. when the articulated arm is in the transport position.
Un dispositif à roue de transport escamotable selon un mode préférentiel de réalisation de l'invention comprend tel que représenté sur les figures un support 1 de fixation du dispositif à l'équipement de motoculture. A retractable transport wheel device according to a preferred embodiment of the invention comprises as shown in FIGS. support 1 for attaching the device to the garden equipment.
Un tel équipement de motoculture peut être de tous types. Il peut s'agir d'une motobineuse telle que représentée sur la figure 1, ou d'un motoculteur, d'une débroussailleuse ou de tout équipement agricole équivalent.  Such garden equipment can be of all types. It can be a tiller as shown in Figure 1, or a tiller, a brush cutter or any equivalent agricultural equipment.
Ce support de fixation peut, selon certains modes de réalisation, être intégré directement sur l'équipement de motoculture lors de la fabrication des équipements de motoculture. Il est également possible d'usiner une partie d'un équipement de motoculture préexistant pour en faire un support de fixation d'un dispositif selon l'invention.  This mounting bracket can, according to some embodiments, be integrated directly on the equipment motoculture during the manufacture of garden equipment. It is also possible to machine part of a pre-existing garden equipment to make a mounting bracket of a device according to the invention.
Un dispositif selon l'invention comprend également un bras 2 articulé monté pivotant par rapport au support 1 de fixation autour d'un arbre 8 de pivotement.  A device according to the invention also comprises an articulated arm 2 pivotally mounted relative to the support 1 for fixing around a pivoting shaft 8.
Le bras articulé porte en outre au niveau de son extrémité distale, une roue 4 de transport.  The articulated arm further carries at its distal end, a wheel 4 of transport.
L'articulation du bras autour de l'arbre 8 de pivotement permet de déplacer la roue de transport d'une première position, dite position de transport, dans laquelle ladite roue repose sur le sol, à au moins une deuxième position, dite position de travail, dans laquelle ladite roue n'est pas en contact avec le sol.  The articulation of the arm around the pivoting shaft 8 makes it possible to move the transport wheel from a first position, called the transport position, in which said wheel rests on the ground, to at least a second position, called the position of in which said wheel is not in contact with the ground.
Les figures 2, 5 et 8 représentent le bras 2 articulé et la roue 4 dans la position de transport.  Figures 2, 5 and 8 show the articulated arm 2 and the wheel 4 in the transport position.
Les figures 3, 6 et 9 représentant le bras 2 articulé et la roue 4 dans la position de travail.  Figures 3, 6 and 9 showing the articulated arm 2 and the wheel 4 in the working position.
Les figures 4, 7 et 10 représentent le bras 2 articulé et la roue 4 dans une position, dite position intermédiaire, entre la position de transport et la position de travail des figures 3, 6 et 9.  Figures 4, 7 and 10 show the articulated arm 2 and the wheel 4 in a position, said intermediate position, between the transport position and the working position of Figures 3, 6 and 9.
Le support de fixation est selon le mode de réalisation des figures formé de deux profilés 6, 7 présentant chacun une section droite transversale en forme de L.  The fixing support is according to the embodiment of the figures formed of two sections 6, 7 each having a cross section L-shaped cross.
Le profilé 6 comprend une paroi 61 horizontale destinée à venir en appui contre l'équipement de motoculture et adaptée pour recevoir des moyens de fixation, par exemple du type vis-écrou, permettant de fixer le profilé 6 sur l'équipement. Pour ce faire, cette paroi 61 horizontale comprend des lumières 62 permettant le passage des moyens de fixation du type vis-écrou, l'équipement de motoculture étant pourvu de lumières en regard pour recevoir également ces moyens de fixation du type vis-écrou. The profile 6 comprises a horizontal wall 61 intended to abut against the garden equipment and adapted to receive fastening means, for example of the screw-nut type, for fixing the profile 6 on the equipment. To do this, this horizontal wall 61 includes lights 62 allowing the passage of fastening means of the screw-nut type, the garden equipment being provided with lights facing to also receive these fixing means of the screw-nut type.
Le profilé 7 comprend de la même manière une paroi 71 horizontale présentant des lumières permettant le passage de moyens de fixation pour solidariser ce profilé à l'équipement de motoculture.  The profile 7 similarly comprises a horizontal wall 71 having lights for the passage of fastening means for securing this profile to the equipment motoculture.
Comme indiqué précédemment, ces profilés peuvent être des profilés préexistant de l'équipement de motoculture sur lesquels on vient usiner les moyens de fixation du bras 2 articulé sur ces profilés. En particulier, ces profilés 6 et 7 peuvent faire partie intégrante du châssis de l'équipement. Dans ce cas et selon un mode de réalisation particulier de l'invention, les parois horizontales 61, 71 peuvent servir d'interface de fixation du moteur de l' équipement de motoculture.  As indicated above, these profiles can be pre-existing profiles of the garden equipment on which it is machined the attachment means of the arm 2 articulated on these profiles. In particular, these profiles 6 and 7 can be an integral part of the chassis of the equipment. In this case and according to a particular embodiment of the invention, the horizontal walls 61, 71 can serve as motor attachment interface of the garden equipment.
Une fois ces deux profilés montés sur l'équipement, les parois 63, 73 verticales, qui forment un angle droit avec les parois 61, 71 horizontales définissent un espace de réception de l'extrémité proximale du bras 2 articulé.  Once these two sections mounted on the equipment, the walls 63, 73 vertical, which form a right angle with the walls 61, 71 horizontal define a receiving space of the proximal end of the articulated arm 2.
Ces parois 63, 73 verticales forment des paliers de réception d'un arbre 8 de pivotement du bras 2 articulé, s'étendant de part et d'autre des parois 63, 73.  These vertical walls 63, 73 form bearings for receiving a pivoting shaft 8 of the articulated arm 2, extending on either side of the walls 63, 73.
Chaque paroi 63, 73 verticale comprend en outre une lumière 64 ob longue de guidage. Cette lumière 64 oblongue reçoit un tenon 9 de guidage. Dans le cas particulier où les profilés 6 et 7 font partie intégrante du châssis de l'équipement, les lumières 64 oblongues sont pratiquées dans le châssis.  Each wall 63, 73 vertical further comprises a light 64 long guide ob. This oblong slot 64 receives a guide pin 9. In the particular case where the sections 6 and 7 form an integral part of the chassis of the equipment, the oblong slots 64 are formed in the chassis.
Les lumières 64 oblongues des parois 63, 73 sont agencées en regard l'une de l'autre de sorte que le tenon 9 de guidage puisse s'étendre horizontalement de part et d'autre des deux parois 63, 73 verticales, en passant dans les lumières 64 de guidage.  The slots 64 oblong walls 63, 73 are arranged facing each other so that the guide pin 9 can extend horizontally on either side of the two walls 63, 73 vertical, passing through the guide lights 64.
Chaque lumière 64 de guidage présente une forme générale de demi- hexagone. La largeur de la lumière 64 de guidage est par exemple de 10% supérieure au diamètre du tenon 9 de guidage. Une telle proportion permet au tenon 9 de guidage de se déplacer dans la lumière de guidage mais sans néanmoins introduire un jeu trop important. La lumière 64 de guidage est ménagée dans chaque paroi 63, 73 verticale de sorte que la direction principale de la lumière forme avec la verticale un angle de 10° à 30°. Each guide light 64 has a general half-hexagon shape. The width of the guide light 64 is for example 10% greater than the diameter of the guide post 9. Such a proportion allows the guide pin 9 to move in the guide light but without introducing too much play. The guide light 64 is formed in each wall 63, 73 vertical so that the main direction of the light forms with the vertical an angle of 10 ° to 30 °.
Cette lumière 64 de guidage présente une forme adaptée pour que le tenon 9 de guidage puisse entrer, dans ladite position de transport, en butée contre une portion du support de fixation délimitant une première extrémité de cette lumière de guidage, et dans la position de travail en butée contre une portion du support de fixation délimitant l'extrémité opposée de cette lumière de guidage.  This guide light 64 has a shape adapted so that the guide pin 9 can enter, in said transport position, abutting against a portion of the fixing support delimiting a first end of this guide light, and in the working position. in abutment against a portion of the fixing support delimiting the opposite end of this guide light.
Les zones extrêmes de la lumière 64 de guidage forment en outre avec le tenon 9 de guidage des moyens de blocage du bras 2 articulé dans la position de travail.  The end zones of the guide light 64 also form, with the guide post 9, means for locking the articulated arm 2 in the working position.
En particulier, et tel que représenté sur les figures 3, 6, et 9, lorsque le tenon 9 de guidage est dans la partie inférieure de la lumière 64 de guidage, le tenon exerce sur la paroi 63 verticale une force qui s'oppose à la force de gravité du bras 2 articulé et de la roue 4 si bien que le bras 2 articulé est maintenu dans cette position. Ce blocage résulte de la forme de la lumière oblongue et de son orientation dans la paroi 63 verticale.  In particular, and as shown in Figures 3, 6, and 9, when the guide pin 9 is in the lower portion of the guide slot 64, the tenon exerts on the vertical wall 63 a force which opposes the force of gravity of the articulated arm 2 and the wheel 4 so that the articulated arm 2 is held in this position. This blockage results from the shape of the oblong slot and its orientation in the vertical wall 63.
Selon le mode de réalisation des figures, le bras 2 articulé comprend une fourche 10. Cette fourche 10 comprend deux ailes 11, 12 parallèles. L'extrémité proximale des ailes 11, 12 sont traversées par le tenon 9 de guidage. Ce tenon 9 de guidage est fixe par rapport aux ailes 11, 12 du bras 2 articulé.  According to the embodiment of the figures, the articulated arm 2 comprises a fork 10. This fork 10 comprises two wings 11, 12 parallel. The proximal end of the wings 11, 12 are traversed by the guide pin 9. This guide pin 9 is fixed relative to the wings 11, 12 of the arm 2 hinged.
Chaque aile comprend en outre une lumière oblongue, dite lumière 13 de coulissement, traversée par l'arbre 8 de pivotement. Chaque lumière s'étend globalement dans la direction principale de la fourche 10.  Each wing further comprises an oblong slot, called sliding slot 13, through which the pivoting shaft 8 passes. Each light extends generally in the main direction of the fork 10.
Le bras 2 articulé peut ainsi coulisser sur l'arbre 8 de pivotement au cours du déplacement du bras 2 articulé de la position de transport à la position de travail et inversement.  The articulated arm 2 can thus slide on the pivoting shaft 8 during the movement of the articulated arm 2 from the transport position to the working position and vice versa.
En particulier, le tenon 9 de guidage étant contraint dans ses déplacements par les lumières 64 de guidage, le pivotement du bras 2 articulé n'est possible que si le bras 2 articulé peut coulisser sur l'arbre 8 de pivotement.  In particular, the guide pin 9 being constrained in its movements by the guide lights 64, the pivoting of the articulated arm 2 is only possible if the articulated arm 2 can slide on the pivot shaft 8.
Les figures 4, 7 et 10 montrent le bras 2 articulé dans une position intermédiaire entre les position de transport et de travail et sur lesquelles on peut observer le déplacement relatif de l'arbre 8 de pivotement dans les lumières 13 de coulissement. Figures 4, 7 and 10 show the articulated arm 2 in an intermediate position between the transport position and work and on which we can observe the relative displacement of the pivot shaft 8 in the sliding slots 13.
Un ressort 14 est en outre aménagé entre les deux ailes 11, 12 de la fourche 10. L'extrémité proximale du ressort 14 est fixée à l'arbre 8 de pivotement et l'extrémité distale du ressort 14 est fixée à un arbre 15 s'étendant entre les deux ailes 11, 12 de la fourche et fixe par rapport à ces dernières.  A spring 14 is further arranged between the two wings 11, 12 of the fork 10. The proximal end of the spring 14 is fixed to the pivot shaft 8 and the distal end of the spring 14 is fixed to a shaft 15. extending between the two wings 11, 12 of the fork and fixed relative thereto.
Le ressort 14 est choisi de telle sorte qu'il soit en légère traction, lorsque l'arbre 8 de pivotement est en butée contre l'extrémité distale de la lumière 13.  The spring 14 is chosen so that it is in slight traction, when the pivoting shaft 8 is in abutment against the distal end of the lumen 13.
Les figures 8, 9 et 10 représentent le ressort 14 au cours du déplacement du bras 2 articulé de la position de transport à la position de travail.  Figures 8, 9 and 10 show the spring 14 during the displacement of the articulated arm 2 from the transport position to the working position.
Sur la figure 8, le ressort est au repos ou légèrement en traction. Sur la figure 9, le ressort est étiré de part le déplacement de l'arbre 8 de pivotement dans la lumière 13 de coulissement, résultant du guidage du pivotement par le tenon 9 de guidage se déplaçant dans la lumière 64 de guidage.  In Figure 8, the spring is at rest or slightly in tension. In FIG. 9, the spring is stretched due to the displacement of the pivoting shaft 8 in the sliding slot 13, resulting from the guide of the pivoting movement by the guide pin 9 moving in the guide slot 64.
Sur la figure 10, le ressort 14 est dans une position légèrement en traction pour maintenir l'arbre 8 de pivotement contre l'extrémité distale de la lumière 13 de coulissement.  In Fig. 10, the spring 14 is in a slightly tensile position to hold the pivot shaft 8 against the distal end of the sliding lumen 13.
La raideur du ressort doit être suffisante pour empêcher le pivotement spontané du bras 2 articulé de la position de travail, telle que représentée sur la figure 9, à la position de transport, telle que représentée sur la figure 8.  The stiffness of the spring must be sufficient to prevent spontaneous pivoting of the articulated arm 2 from the working position, as shown in FIG. 9, to the transport position, as represented in FIG. 8.
De simples essais de routine permettent à l'homme du métier de déterminer la raideur du ressort 14 compatible avec le poids de la roue et du bras articulé utilisés.  Simple routine tests allow the skilled person to determine the stiffness of the spring 14 compatible with the weight of the wheel and the articulated arm used.
Le bras 2 articulé comporte en outre un essieu 16 portant la roue 4.  The articulated arm 2 further comprises an axle 16 carrying the wheel 4.
De préférence, l'essieu 16, l'arbre 15, l'arbre 8 de pivotement et le tenon 9 de guidage sont tous parallèles.  Preferably, the axle 16, the shaft 15, the pivot shaft 8 and the guide pin 9 are all parallel.
L'invention ne se limite pas au seul mode de réalisation décrit. En particulier, un dispositif à roue de transport escamotable selon l'invention peut comprendre un bras articulé formé d'une tige plate comprenant une lumière de coulissement traversé par un arbre de pivotement. Le support de fixation comprend une unique lumière de guidage ménagé coopérant avec un tenon de guidage porté par la tige plate. Un tel dispositif peut par exemple équiper les petits équipements de motoculture légers. The invention is not limited to the single embodiment described. In particular, a retractable transport wheel device according to the invention may comprise an articulated arm formed of a flat shaft comprising a sliding slot traversed by a pivot shaft. The fixing support comprises a single guiding light arranged cooperating with a tenon of guidance carried by the flat shaft. Such a device can for example equip small equipment light agricultural.

Claims

REVENDICATIONS
1. Equipement de motoculture à roue de transport escamotable comprenant un support (1) de fixation d'un bras (2) articulé destiné à porter ladite roue (4) de transport, caractérisé en ce que ledit support (1) de fixation comprend au moins une lumière oblongue, dite lumière (64) de guidage, adaptée pour recevoir un tenon (9) de guidage solidaire dudit bras (2) articulé et apte à se déplacer dans ladite lumière (64) oblongue de guidage au cours du déplacement dudit bras (2) articulé d'une position de transport à une position de travail et inversement. 1. Garden equipment with retractable transport wheel comprising a support (1) for attaching an articulated arm (2) intended to carry said transport wheel (4), characterized in that said support (1) for fixing comprises minus an oblong slot, called a guiding slot (64), adapted to receive a guide pin (9) integral with said articulated arm (2) and able to move in said oblong guiding slot (64) during the displacement of said arm (2) articulated from a transport position to a work position and vice versa.
2. Equipement de motoculture selon la revendication 1, caractérisé en ce que la lumière de guidage est adaptée pour former avec le tenon (9) de guidage des moyens de blocage du bras (2) articulé dans la position de travail.  2. Garden equipment according to claim 1, characterized in that the guide slot is adapted to form with the pin (9) for guiding means for locking the arm (2) articulated in the working position.
3. Equipement de motoculture selon la revendication 2, caractérisé en ce que la lumière (64) de guidage présente une forme adaptée pour que ledit tenon (9) de guidage puisse entrer, dans ladite position de transport, en butée contre une portion du support (1) de fixation délimitant une première extrémité de cette lumière (64) de guidage, et dans la position de travail en butée contre une portion du support (1) de fixation délimitant l'extrémité opposée de la lumière (64) de guidage.  3. Equipment motoculture according to claim 2, characterized in that the guide slot (64) has a shape adapted so that said guide pin (9) can enter, in said transport position, in abutment against a portion of the support (1) fixing a first end of this guide slot (64), and in the working position in abutment against a portion of the support (1) for fixing delimiting the opposite end of the guide slot (64).
4. Equipement de motoculture selon l'une des revendications 1 à 3, caractérisé en ce que ledit bras (2) articulé :  4. Garden equipment according to one of claims 1 to 3, characterized in that said articulated arm (2):
est monté pivotant par rapport au support de fixation autour d'un arbre (8) de pivotement fixe par rapport audit support (1) de fixation,  is pivotally mounted relative to the fixing support around a fixed pivoting shaft (8) relative to said fixing support (1),
présente au moins une lumière oblongue, dite lumière (13) de coulissement, traversée par ledit arbre (8) de pivotement de sorte que ledit bras (2) articulé puisse coulisser sur l'arbre (8) de pivotement au cours du déplacement dudit bras (2) articulé d'une position de transport à une position de travail et inversement.  has at least one oblong slot, called sliding slot (13), traversed by said pivot shaft (8) so that said articulated arm (2) can slide on the pivot shaft (8) during the displacement of said arm (2) articulated from a transport position to a work position and vice versa.
5. Equipement de motoculture selon la revendication 4, caractérisé en ce que chaque lumière oblongue (13) de coulissement s'étend le long d'une direction, dite direction longitudinale, et en ce que ledit arbre (8) de pivotement traverse chaque lumière (13) selon une direction transversale. 5. Garden equipment according to claim 4, characterized in that each oblong sliding slot (13) extends along a direction, referred to as the longitudinal direction, and in that said pivoting shaft (8) passes through each slot (13) in a transverse direction.
6. Equipement de motoculture selon l'une des revendications 4 ou 5, caractérisé en ce qu'il comprend au moins un ressort (14) monté entre ledit arbre 6. garden equipment according to one of claims 4 or 5, characterized in that it comprises at least one spring (14) mounted between said shaft
(8) de pivotement et ledit bras (2) articulé de telle sorte qu'il puisse s'opposer au coulissement spontané du bras (2) articulé sur l'arbre (8) de pivotement. (8) pivoting and said arm (2) articulated so that it can oppose the spontaneous sliding of the arm (2) articulated on the shaft (8) pivoting.
7. Equipement de motoculture selon la revendication 6, caractérisé en ce que ledit ressort (14) est monté de telle sorte qu'il puisse maintenir l'arbre (8) de pivotement en butée contre une extrémité longitudinale d'au moins une lumière (13) de coulissement en l'absence d'une force exercée par un opérateur externe. 7. Garden equipment according to claim 6, characterized in that said spring (14) is mounted so that it can hold the pivot shaft (8) abutting against a longitudinal end of at least one lumen ( 13) in the absence of a force exerted by an external operator.
8. Equipement de motoculture selon l'une des revendications 4 à 7, caractérisé en ce que chaque lumière (64) de guidage s'étend dans un plan sensiblement parallèle au plan dans lequel s'étend chaque lumière (13) de coulissement. 8. Garden equipment according to one of claims 4 to 7, characterized in that each guide slot (64) extends in a plane substantially parallel to the plane in which extends each slot (13) of sliding.
9. Equipement de motoculture selon l'une des revendications 1 à 8, caractérisé en ce que ledit bras (2) articulé est monté pivotant par rapport audit support (1) de fixation au niveau d'une première extrémité du bras, dite extrémité proximale, et porte ladite roue (4) au niveau de l'extrémité opposée, dite extrémité distale.  9. Garden equipment according to one of claims 1 to 8, characterized in that said articulated arm (2) is pivotally mounted relative to said support (1) for fixing at a first end of the arm, said proximal end. , and carries said wheel (4) at the opposite end, said distal end.
10. Equipement de motoculture selon l'une des revendications 1 à 9, caractérisé en ce que ledit tenon (9) de guidage est un arbre s 'étendant de part et d'autre dudit support (1) de fixation.  10. Garden equipment according to one of claims 1 to 9, characterized in that said pin (9) is a guide shaft extending on either side of said support (1) for fixing.
11. Equipement de motoculture selon l'une des revendications 1 à 10, caractérisé en ce qu'il comprend deux lumières (64) de guidage ménagées dans ledit support (1) de fixation en regard l'une de l'autre.  11. Garden equipment according to one of claims 1 to 10, characterized in that it comprises two slots (64) for guiding formed in said support (1) for fixing facing one another.
12. Equipement de motoculture selon l'une des revendications 1 à 11, caractérisé en ce que ledit support de fixation comprend deux profilés (6, 7) présentant chacun une section droite transversale en forme de L, une lumière oblongue de guidage étant ménagée dans chaque profilé (6, 7).  12. Garden equipment according to one of claims 1 to 11, characterized in that said fixing support comprises two profiles (6, 7) each having an L-shaped cross section, an oblong guide slot being formed in each profile (6, 7).
13. Equipement de motoculture selon les revendications 9 et 12 prises ensemble, caractérisé en ce que ladite extrémité proximale dudit bras (2) articulé est logé entre lesdits deux profilés (6, 7) du support de fixation. Garden equipment according to claims 9 and 12 taken together, characterized in that said proximal end of said articulated arm (2) is housed between said two sections (6, 7) of the fixing support.
14. Equipement de motoculture selon l'une des revendications 12 ou 13, caractérisé en ce que les deux profilés (6, 7) font partie intégrante d'un châssis dudit équipement.  14. Garden equipment according to one of claims 12 or 13, characterized in that the two sections (6, 7) form an integral part of a chassis of said equipment.
15. Equipement de motoculture selon les revendications 6 ou 7, caractérisé en ce que ledit bras (2) articulé comprend une fourche (10) formée de deux ailes (11, 12) parallèles entre lesquelles est logé ledit ressort (14).  15. Garden equipment according to claims 6 or 7, characterized in that said articulated arm (2) comprises a fork (10) formed of two wings (11, 12) parallel between which is housed said spring (14).
16. Equipement de motoculture selon la revendication 15, caractérisé en ce que ledit bras (2) articulé comprend un arbre (15) parallèle audit arbre (8) de pivotement agencé entre lesdites ailes (1 1 , 12) de la fourche (10) et sur lequel l'extrémité distale du ressort (14) est montée, l'extrémité proximale étant fixée sur ledit arbre (8) de pivotement.  16. Garden equipment according to claim 15, characterized in that said articulated arm (2) comprises a shaft (15) parallel to said pivot shaft (8) arranged between said wings (1 1, 12) of the fork (10). and on which the distal end of the spring (14) is mounted, the proximal end being attached to said pivot shaft (8).
17. Dispositif à roue de transport escamotable pour équipement de motoculture comprenant :  17. A retractable transport wheel device for motoculture equipment comprising:
un support (1) de fixation dudit dispositif audit équipement de motoculture,  a support (1) for fixing said device to said garden equipment,
un bras (2) articulé par rapport au support (1) de fixation, et destiné à porter ladite roue (4) de transport,  an arm (2) articulated with respect to the support (1) for fixing, and intended to carry said transport wheel (4),
caractérisé en ce que ledit support (1) de fixation comprend au moins une lumière oblongue, dite lumière (64) de guidage, et adaptée pour recevoir un tenon (9) de guidage solidaire dudit bras (2) articulé et apte à se déplacer dans ladite lumière (64) oblongue de guidage au cours du déplacement dudit bras (2) articulé d'une position de transport à une position de travail et inversement. characterized in that said support (1) for fixing comprises at least one oblong slot, called guide light (64), and adapted to receive a pin (9) integral with said articulated arm (2) and able to move in said oblong guiding light (64) during movement of said arm (2) articulated from a transport position to a working position and vice versa.
18. Dispositif selon la revendication 17, caractérisé en ce que la lumière de guidage est adaptée pour former avec le tenon (9) de guidage des moyens de blocage du bras (2) articulé dans la position de travail.  18. Device according to claim 17, characterized in that the guide slot is adapted to form with the pin (9) for guiding means for locking the arm (2) articulated in the working position.
EP11722465.9A 2010-06-01 2011-06-01 Implement with retractable transport wheel Withdrawn EP2575420A1 (en)

Applications Claiming Priority (2)

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FR1054275A FR2960382B1 (en) 2010-06-01 2010-06-01 REMOVABLE TRANSPORT WHEEL EQUIPMENT
PCT/EP2011/059046 WO2011151376A1 (en) 2010-06-01 2011-06-01 Implement with retractable transport wheel

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* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2011151376A1 *

Also Published As

Publication number Publication date
FR2960382A1 (en) 2011-12-02
FR2960382B1 (en) 2012-07-20
RU2569967C2 (en) 2015-12-10
CN103118526B (en) 2016-10-05
RU2012153697A (en) 2014-07-20
CN103118526A (en) 2013-05-22
WO2011151376A1 (en) 2011-12-08

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