EP4175868A1 - Remorque pour bicyclette - Google Patents
Remorque pour bicycletteInfo
- Publication number
- EP4175868A1 EP4175868A1 EP21746512.9A EP21746512A EP4175868A1 EP 4175868 A1 EP4175868 A1 EP 4175868A1 EP 21746512 A EP21746512 A EP 21746512A EP 4175868 A1 EP4175868 A1 EP 4175868A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bicycle
- trailer
- wheel
- ground
- arms
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- B62K27/00—Sidecars; Forecars; Trailers or the like specially adapted to be attached to cycles
- B62K27/003—Trailers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/12—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by three-wheeled construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0003—Adaptations for loading in or on a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62H—CYCLE STANDS; SUPPORTS OR HOLDERS FOR PARKING OR STORING CYCLES; APPLIANCES PREVENTING OR INDICATING UNAUTHORIZED USE OR THEFT OF CYCLES; LOCKS INTEGRAL WITH CYCLES; DEVICES FOR LEARNING TO RIDE CYCLES
- B62H1/00—Supports or stands forming part of or attached to cycles
- B62H1/10—Supports or stands forming part of or attached to cycles involving means providing for a stabilised ride
- B62H1/12—Supports or stands forming part of or attached to cycles involving means providing for a stabilised ride using additional wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J7/00—Luggage carriers
- B62J7/02—Luggage carriers characterised by the arrangement thereof on cycles
- B62J7/04—Luggage carriers characterised by the arrangement thereof on cycles arranged above or behind the rear wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- B62K27/00—Sidecars; Forecars; Trailers or the like specially adapted to be attached to cycles
- B62K27/02—Frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- B62K27/00—Sidecars; Forecars; Trailers or the like specially adapted to be attached to cycles
- B62K27/06—Resilient axle suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- B62K27/00—Sidecars; Forecars; Trailers or the like specially adapted to be attached to cycles
- B62K27/10—Other component parts or accessories
- B62K27/12—Coupling parts for attaching cars or the like to cycle; Arrangements thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
- B62B2301/08—Wheel arrangements; Steering; Stability; Wheel suspension comprising additional wheels to increase stability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
- B62B2301/20—Resilient wheel suspension using springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/12—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor convertible, e.g. into children's furniture or toy
- B62B7/126—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor convertible, e.g. into children's furniture or toy into a trailer, e.g. bicycle trailer
Definitions
- the present invention relates to the field of trailers intended for attachment to the rear of a bicycle.
- a trailer is within the meaning of this patent an autonomous vehicle, provided with wheels, which can be pulled by a towing vehicle to which it is connected by a reversible link.
- a bicycle is defined as a two-wheeled vehicle propelled exclusively or partially by the muscular energy of the cyclist.
- this term includes electrically assisted bicycles.
- Patent application US4032166A is known in the state of the art describing a load support device for a bicycle having a frame, a seatpost, a rear wheel engaging in the ground and a steerable front wheel, said device comprising: a container having a wheel arch along its front center portion to accommodate said rear wheel, means for rigidly attaching said container to said frame at the rear of said seat post, a pair of stabilizer assemblies , a ground engaging wheel rotatably mounted on each of said sets of stabilizers, and means for mounting each of said sets of stabilizers on opposite sides of said containers, respectively, including hinge means secured between each of said sets of wheels stabilizer and an adjacent side face of said container, roller spacer means between said adjacent side face of said container and said assembly of wheels, and resilient damping means between said container and said stabilizer wheel assemblies for biasing said assemblies toward said container against said roller means, said mounting means permitting said stabilizer assemblies to move vertically, laterally and tilting manner relative to said container.
- German patent application DE3138789 describing an accessory which can be easily coupled and uncoupled from a bicycle and which can also be used at the same time as a trolley for shopping.
- This accessory includes a frame to be fixed on the bicycle and provided with a U-shaped or V-shaped arch, at the ends of which are fixed supports for the two supporting wheels.
- This accessory can be attached to the bike using three attachments.
- patent NL1007497 describing a structure carrying at least one container, said structure comprising means which allow it to be coupled in a reversible manner with a bicycle, said structure also comprising at least two wheels intended to stabilize the bicycle, said wheels being elastically mounted on said structure. Attachment to the bike is via its seat post and rear axle.
- the load support described in the document US4032166A stabilizes the bicycle, but it does not allow the bicycle to be tilted for an angle greater than a few degrees.
- the main objective of the invention is to solve this problem of stability/security, which makes it possible to propose, for the transport of children and loads with a bicycle, in cities, a new solution which is both multi - uses, safe and economical.
- the invention aims to reconcile significant stability when the bicycle fitted with the trailer is stationary with easy tilting capacity in bends.
- the invention relates to a trailer which makes it possible to transform an ordinary two-wheeled bicycle into a vehicle for transporting loads or persons benefiting when the trailer and the bicycle are connected from additional stabilization, while allowing the usual use of the bicycle when the trailer is detached.
- the invention therefore allows great modularity, with a use perfectly suited to each situation:
- the invention relates, in its most general sense, to a bicycle trailer comprising:
- deformable to allow transverse movement is meant that the configuration of the assembly formed by the two arms and the structure, seen in cross section, varies according to the inclination of the bicycle so that the distance between the points of contact with the ground of one and the other of the stabilization wheels with respect to the point of contact with the ground of the rear wheel of the bicycle varies, and increases with the side towards which the bicycle tilts.
- This deformation can result from various technical implementations, for example arms articulated with respect to the structure by a pivot connection with a longitudinal axis, deformable arms or articulated arms.
- This configuration has the effect that, when the bicycle is subjected to an effect tending to tilt it, the transverse displacement of the wheel on the side of the inclination creates a strong resistance when the wheel is not rotating, which corresponds to the situation where the bicycle is stationary. On the other hand, when the bicycle moves forward, the stabilizer wheel turns and there is much less transverse resistance.
- the consequence is that the trailer stabilizes the bicycle when stationary, while allowing the bicycle to lean when cornering, while moving.
- the rotational stiffness of an arm, when it is raised is less than 10 Nm per degree.
- each stabilization wheel presses on the ground with a force of less than 200 N.
- said arms are connected to said structure by a pivot connection with a longitudinal axis.
- each of said arms is connected to said structure by an elastically deformable means.
- the lever arm of the elastically deformable means is reduced by at least 25%, thanks to the rotation of the arm, when the inclination of the bicycle passes from 0 degrees to 20 degrees.
- the height of the longitudinal axes of the arms relative to the ground is between 250 mm and 1000 mm and more precisely between 350 mm and 750 mm.
- the trailer has upper stops limiting the upward movement of each arm.
- the trailer has at least two positions of the upper stops corresponding to an inclination slight angle of the bicycle, between 5° and 15°, and a strong inclination of the bicycle, between 15° and 35°.
- the trailer has low stops limiting the downward position of each arm.
- the contact zones between the arms and said stops are elastically deformable.
- the trailer comprises a stand which can be in contact with the ground when the trailer is used in autonomous mode.
- the trailer comprises means for blocking the rotation of the arms when the trailer is used in autonomous mode, advantageously said blocking means is actuated by the stand.
- said positioning of the arms is advantageously ensured by guides, integral with said arms, which are moved by the movement of the stand if the arms are not in the position provided for the use of the trailer in autonomous mode.
- the part of said structure interacts with a member integral with the bicycle, according to a relative displacement ensuring the transverse relative positioning of the member with respect to said structure.
- the coupling means of said structure has a means for guiding the bicycle, to a position preventing the rotation of said bicycle relative to said structure along a longitudinal axis, and a locking means of said structure on the bicycle .
- the locking means is fixed on the stand.
- the coupling means of said structure and the complementary parts of said bicycle comprise three fixing zones, with two first fixing zones on either side of the rear wheel and a third fixing zone higher than the other two .
- the complementary parts of said bicycle of the first two fixing zones are secured to bars which are fixed to the seat tube and the seatstays of the bicycle.
- the complementary parts of said bicycle of the first two fixing zones are integral with supports which are fixed to the seat tube and the axis of the rear wheel of the bicycle.
- Said structure is rigid when it is subjected to a longitudinal axis moment generated by the vertical force exerted on a loaded wheel, in order to limit the transverse forces in the seatstays and the bases of the bicycle.
- Said structure is extended upwards by a handle at a height of between 70 and 120 centimeters from the ground, extended downwards by the arms which carry the wheels and said structure incorporates most of the mechanical elements used for fixing the trailer on the bicycle and for blocking the rotation of the arms.
- the arms are made of composite material and their shape is designed to ensure all or part of the functions of the arm: downforce on the ground, lateral spacing of the wheel when the bicycle tilts, flexibility in the event of a longitudinal impact on the wheel and drift angle of rotation.
- axles of said stabilizer wheels are in the same vertical plane as the axle of the rear wheel of the coupled bicycle.
- the axles of said stabilizer wheels are offset rearward relative to the axle of the rear wheel of the coupled bicycle, by a distance of less than 200 millimeters.
- Said stabilizing wheels are mounted with a drift rotation angle, which is permanent or linked to the support force of said stabilizing wheels on the ground.
- the drift angle value is between 0.5 degrees and 30 degrees.
- the crutch is provided with an idler wheel and said crutch is movable relative to said structure between an autonomous trailer position where said idler wheel bears on the ground, with a longitudinal offset relative to the two wheels of the trailer, a raised position for movement by a towing bicycle and optionally a third position of the crutch in the storage position where the crutch frames the load carrier.
- Said structure is surmounted by a transverse two-seater seat, with a lower level for the feet in front of the crosspiece, on each side of the rear wheel of the bicycle.
- Said structure is surmounted by a longitudinal two-seater seat, with a lower level for the feet in front of the crosspiece and behind the crosspiece, on each side of the rear wheel of the bicycle.
- Said stabilizing wheels are substantially vertical when their outer side face is aligned with the outer side face of said structure.
- Said cornering angle of rotation linked to the bearing force of the wheel on the ground, is obtained by the deformation of two silent blocks whose bearing faces form an angle with the direction of said force, said angles being opposite directions for the two silent blocks.
- said arm When the bearing force of said stabilizing wheel on the ground is zero, said arm is in abutment under the action of a moment which opposes a rotation which generates a drift. • Said arm, when it is in high or low abutment and it is subjected to a force which makes an angle with the direction of the arm, comes to rest on a surface which causes the arm to rotate towards a position without drift rotation.
- Said trailer is linked to said bicycle by a pivot connection with a transverse axis and resting on the ground with an idler wheel.
- FIG.l Figure 1 shows a bicycle.
- FIG.2 Figure 2 shows a trailer used independently.
- Figure 3 shows a trailer mounted on the bicycle.
- Figure 4 shows a trailer seen from the front, with its main components.
- Figure 5 shows a side view of a trailer, with its main components.
- figure 6 represents a trailer with a strong inclination of the bicycle
- FIG.7 Figure 7 shows a rear view of a particular mode of fixing the left wheel of the trailer.
- Figure 8 shows a longitudinal section of a particular mode of fixing the left wheel of the trailer.
- Figure 9 shows a horizontal section of a particular mode of fixing the left wheel of the trailer.
- Figure 10 shows a cross section of the assembly of a wheel arm.
- FIG.11 Figure 11 shows a longitudinal section of the assembly of a wheel arm.
- Figure 12 shows a cross section of the locking mechanism of a crutch.
- Figure 13 shows a longitudinal section of the locking mechanism of a trailer and its stand.
- Figure 14 shows a longitudinal section of the rear part of the attachment of a lug door bar on the bicycle.
- Figure 15 shows a horizontal section of the rear part of the attachment of a lug door bar on the bicycle.
- Figure 16 shows a trailer in storage mode, side view.
- Figure 17 shows a trailer in storage mode, front view.
- Figure 18 shows a trailer in a cover, side view.
- Figure 19 shows a trailer in a cover, front view.
- Figure 20 shows a transverse two-seater seat mounted on a trailer.
- Figure 21 shows a longitudinal two-seater seat mounted on a trailer.
- Figure 22 shows a box mounted on a trailer.
- Figure 23 shows, in reference position, a trailer with inclined wheels, seen from the front.
- Figure 24 shows a fin rotation device, in longitudinal section.
- Figure 25 shows a fin rotation device, in cross section.
- Figure 26 shows the abutment of a drift rotation device, for three positions.
- Figure 27 shows a trailer with a trunk which is placed behind the rear wheel of a bicycle, seen from the side.
- Figure 28 shows a trailer with a box which is placed behind the rear wheel of a bicycle, seen from the front.
- the invention described by way of non-limiting examples relates generally to a trailer for a bicycle which stabilizes the bicycle in roll thanks to a stabilizing wheel on each side of the bicycle.
- the stabilization wheel located on the side of the inclination, moves away from the rear wheel. This displacement generates a force which opposes this displacement and which depends on the speed of the bicycle:
- the invention which is the subject of this patent proposes a counter-intuitive solution which, very surprisingly, makes it possible to obtain the targeted behavior by purely mechanical means, making it possible to ensure great stability when the trailer is stationary, and a great swinging flexibility when the trailer is in motion.
- This trailer can also be used both as a load-carrying accessory for a bicycle when it is hitched by a reversible attachment means but also as a trailer usable to be moved manually, when unhooked from the bicycle.
- the invention consists of a trailer (11) for a bicycle (1) comprising:
- a stabilizing wheel (21) placed at the end of an arm (22) connected to said structure (12), a reversible coupling means of said structure (12) with a bicycle frame ( 1), said arms (22) are integral with said structure (12) at the level of a connection zone and are articulated or deformable to allow transverse movement of the stabilizing wheels (21) below said connection zone of such that, when the trailer (11) is coupled to a bicycle (1) and said bicycle (1) tilts to one side with respect to its reference position, the point of contact with the ground of the wheel stabilizer (21) on the side of the inclination deviates transversely from the point of contact of the rear wheel (4) of the bicycle (1) on the ground.
- the arms (22) form a deformable buttress in which the two stabilizing wheels (21) are symmetrical on either side of the rear wheel of the bicycle to form a stable base when the bicycle is stationary. If a lateral force is applied to the bicycle, it tends to cause a lateral displacement of the wheel (21), but the tread in static contact with the ground creates a resistance preventing this lateral "shifting", which creates a tipping resistance of the bicycle. On the other hand, when the bicycle is rolling, the tread is no longer static, and can gradually move away from the rear wheel of the bicycle, and therefore allow a tilt with little resistance.
- the spacing of the wheels (21) is possible due to the articulation of the arms (22) with respect to the structure (12), the arms being rigid, or else by the use of flexible arms (22) fixed in such a way rigid on the structure (12), or even a combination of the two modes.
- the bicycle and the trailer comprise connecting means which, associated with a relative displacement between the bicycle and the trailer, position the bicycle transversely with respect to the trailer during their coupling.
- This design provides a trailer that stabilizes the bicycle and is easy to couple to the bicycle and to uncouple.
- the trailer can transport children and/or loads (shopping, luggage, deliveries, etc.) with various containers.
- These containers can be standard equipment (bags, baskets, child seats, etc.) or seats and trunks whose shape is optimized.
- the trailer can be coupled to all types of bicycles. It is particularly interesting for two types of bicycles, for which it significantly increases the possibilities of use: electrically assisted bicycles (VAE) and bicycles which do not have a luggage rack, in particular mountain bikes (MTB).
- VAE electrically assisted bicycles
- MTB mountain bikes
- the electric assistance makes it possible to limit the efforts of the cyclist, whatever the load he is transporting.
- the trailer according to the invention virtually eliminates the risk of falling.
- the combination of the two therefore allows very different types of users to transport children and/or loads, light or heavy, in complete safety.
- Mountain bikes are intended for sporting use. They don't have racks or fenders. In contrast, they have many speeds, which makes it easy to adapt to the transported load.
- the trailer according to the invention provides the luggage carrier and the rear mudguard. The combination of the two therefore makes it possible to transform a mountain bike into a high-performance urban bike.
- trailer autonomous vehicle, fitted with wheels, which can be pulled by a towing vehicle to which it is connected by a reversible link;
- transverse direction horizontal direction perpendicular to the longitudinal direction
- arm angle angle between the vertical and the straight line which passes through the point of contact of a stabilization wheel and the axis of rotation of the arm which carries this wheel;
- tipping moment moment due to the mass of the loaded bicycle, which tends to tip the bicycle when it is not vertical
- reference position the reference position corresponds to a trailer mounted on the bicycle, in a vertical position on horizontal ground, with the average load retained for the design (load on the trailer and weight of the cyclist).
- drift angle angle between the trajectory of the contact point of a stabilizer wheel and the trajectory of the contact point of the rear wheel of the bicycle.
- angle of rotation of drift angle between the axis of a stabilization wheel and the axis of the rear wheel of the bicycle, the two axes being projected on a horizontal plane.
- Figure 1 schematically represents a bicycle (1), with its main components.
- (I) is made up of a frame (2), a front wheel (3), a rear wheel (4) with its axle (9), a seat tube (5), seatstays ( 6) and bases (7).
- a frame (2) a front wheel (3), a rear wheel (4) with its axle (9), a seat tube (5), seatstays ( 6) and bases (7).
- FIG. 2 schematically represents a trailer
- the trailer (11) rests on three wheels: two stabilizing wheels (21) and one wheel (38) mounted on a stand (32).
- this crutch (32) is articulated on an axis (33).
- the wheel (38) is an idler wheel which makes it easy to steer the trailer when it is used in autonomous mode.
- the trailer (11) can also be tilted and moved on the two wheels (21), as is done by classic way with a shopping cart.
- the stand (32) rests on the ground with simple support, which can be retractable.
- the trailer is equipped with a handle (16) and a load carrier (15).
- This charging support (15) can be designed to house a chain or a cable and the padlock which allows them to be locked. Access to this housing is provided, for example, by an opening on the rear face of the load carrier (15).
- FIG. 3 schematically shows the trailer mounted on the bicycle.
- the stand (32) is in the raised position.
- the trailer is attached to the bicycle at three points by means of a connecting rod (71) under the saddle and two bars (8) which carry lugs.
- the connecting rod (71) is fixed at the rear on the trailer and at the front on a vertical axis fixed on the seat tube (5).
- the contact points of the rear wheel (4) and the wheels (21) of the trailer are aligned. This arrangement makes it possible not to have the wheels slip in the curves. It may also be interesting to accept a slight shift and to place the wheels (21) a little behind the rear wheel (4), at most 200 mm, so that the center of gravity of the trailer (11 ) loaded is further forward relative to the wheels (21).
- Figures 4 and 5 show a trailer (11), mounted on a bicycle (1), with its main components.
- Figure 4 is a front view
- Figure 5 is a side view. These two views correspond to the reference position. To highlight the components of the trailer, without stand, only the rear wheel (4) of the bicycle is shown.
- the trailer comprises a structure (12) composed of two side uprights (13), a crossbar (14), stiffeners (18) and a load support (15) on which loads and containers can be placed. varied, in particular with hooks placed in holes (17). Fixings can be provided for easy mounting on the trailer (11) another trailer, with a high (20) or low (19) attachment.
- the added trailer can optionally be motorized.
- an arm (22), carrying a wheel (21), is articulated on a longitudinal axis (24).
- the arm (22) is terminated by a leaf spring (23) which makes it possible to absorb any longitudinal shocks on the wheel (21).
- the leaf spring can be replaced by a joint on the arm.
- the configuration formed by the articulated arm (22) and a spring (25) (or any other elastically deformable means) is linked, in particular, to the choice of the stiffness of the spring (25), so that in the reference position, each wheel (21) presses on the ground with a relatively weak force, at most 200 N.
- the rotational stiffness of a wheel arm, due to its spring (25), is less than 10 Nm per degree. This stiffness is much lower than the stiffness of the tipping moment, which tends to tip the bicycle when it is not vertical, of the order of 20 Nm per degree (for a mass of 125 kg and a center of gravity at 0.9 m from the ground).
- the action of the springs (25) is therefore relatively limited, which allows the cyclist to find an operation close to that to which he is accustomed when he uses his bicycle without the trailer (11) at cruising speed.
- a cutaway view shows the spring (25d), which works in traction, with an upper attachment (26d) on the side upright (13d) and a lower attachment (27d) on the wheel arm (22d).
- the stand (32), articulated on the axis (33), can be equipped at its end with a handle (39) and reflectors (40).
- Figure 6 shows the movement of the arms (22) of the trailer when the bicycle is tilted. In Figure 6, the inclination of the bicycle is significant, of the order of 30 degrees.
- the wheels (21) move transversely relative to the rear wheel (4) of the bicycle.
- the adhesion of the wheels (21) to the ground opposes this movement, which makes it possible to stabilize the bicycle when stationary and to better control the trajectory of the bicycle at slow speed.
- the force which tends to oppose the inclination of the bicycle becomes very weak when the bicycle is at cruising speed because, for the same inclination speed, the drift angle is inversely proportional to the speed of the bicycle .
- the wheels (21) can have a drift angle of rotation when opening. With this windage rotation angle at the opening, in top view, the right wheel (21d) rotates clockwise relative to the rear wheel (4). The left wheel (21g) turns the other way.
- a relatively small, permanent windage rotation angle of about 1 degree can be provided. It is also possible, to better control the stabilisation/tilt of the bicycle (1) equipped with a trailer (11), to provide a drift rotation angle which increases with the bearing force of the wheel (21) on floor. The cyclist can thus act on the angle of rotation of the drift by tilting his body slightly. With this solution, the maximum value of the drift rotation angle can be significant, for example between 3 and 30 degrees. Another advantage is that there is no slipping of the wheels (21), which limits the forward resistance of the bicycle and the wear of the wheels (21). Figures 7 to 9 and 24 to 26 describe solutions which make it possible to obtain this variable drift angle of rotation.
- the left wheel (21g) is mounted on the leaf spring (23g) of the arm (22) via two silent blocks, the upper silent block (30) and the lower silent block (31). These two silent blocks (30, 31) are fixed on one side to a plate (28) fixed to the leaf spring (23) and on the other side to a plate (29) on which the wheel (21g) is fixed.
- the upper silent block (30) is placed in front of the lower silent block (31) in the longitudinal direction, the vertical force on the wheel (21) causes the wheel to turn around an axis which passes substantially through the two silent blocks (30, 31), therefore creates a drift angle of rotation at the opening which increases with the bearing force of the wheel (21g) on the ground.
- An abutment may optionally be provided, for example between the two plates, to limit the maximum value of the drift angle of rotation.
- the axis (24) must be positioned as high as possible relative to the ground. Indeed, when there is no bracing of the arms (22), the moment of stabilization is proportional to this height.
- this angle is 17 degrees
- the tangent of this angle is equal to 0.3, which makes it possible to have excellent stability when stopped by bracing the arms (22) as soon as the grip on the ground exceeds 0.3.
- the trailer can therefore possibly be simplified by not mounting springs (25).
- the height of the axle (24) relative to the ground can be chosen, between 250 mm and 1000 mm, depending on the result to be obtained and the overall design of the trailer. Preferably, the height chosen is between 350 mm and 750 mm.
- the spring (25) has a low stiffness, which makes it possible to have little increase in force when the length of the spring increases.
- the moment due to the springs which opposes the beginning of the inclination of the bicycle is small, for example of the order of 2 Nm per degree. This moment which tends to straighten the bicycle is much lower than the tipping moment, due to the vertical component of the mass of the loaded bicycle, which tends to tip the bicycle when it is not vertical, of the order of 20 Nm per degree.
- the present invention therefore makes it possible, surprisingly, with or without a spring (25), to obtain good stability when stationary and at slow speed, while retaining the possibility of tilting easily when the bicycle is moving at speed. cruising.
- the arm (22) is made of composite material.
- the shape of the arm (22) can be provided to ensure all or part of the functions of the arm (22): support force at the ground, lateral spacing of the wheel (21) when the bicycle tilts, flexibility in the event of a longitudinal impact on the wheel (21) and cornering angle of rotation.
- Figures 10 and 11 show, for the left side, the articulation area of the wheel arm (22g) which is articulated on the axis (24g).
- the movement of the arm (22g) upwards is limited by an elastic stop (54) which comes into contact with an upper stop (51), for example a pin.
- the upper stop (51) can occupy four positions which correspond to angles of inclination of the bicycle of approximately 5, 10, 20 and 30 degrees.
- the downward rotation of the arm (22g) is limited by an elastic stop (55) which bears against a bottom stop (52), for example a pin.
- This bottom stop (52) is present at all times except when you want to bring the two arms (22) closer together to limit the width of the trailer, for its storage or for use in stand-alone mode.
- the arms (22) come into direct contact with the upper (51) and lower (52) stops, which are elastic.
- the trailer is attached to the bicycle.
- the front part of the stand (32) is in the low position.
- a locking means (37) which has the shape of a hook, blocks a pin (61) which is fixed on the bicycle.
- the front part of the stand (32) When the trailer is in autonomous mode, the front part of the stand (32) is in the high position (position shown with dotted lines).
- the blade (36) of the stand (32) blocks the rotation of the arm (22) via a guide (53).
- the flared entry of the guide (53) makes it possible to correctly position the arms (22) in rotation when passing the trailer from the mode fixed on the bicycle to the autonomous mode.
- the blade (36) rests on an elastic stop (56).
- a locking lug (35) makes it possible to lock the position of one of the arms of the stand (32), for the two modes of use: trailer fixed to the bicycle and independent trailer.
- Figures 12 and 13 show a locking mechanism (34) of the stand (32).
- a locking mechanism (34) of the stand (32) To pass the stand (32) from the high position to the low position and vice versa, one pulls on the ring which controls the locking lug (35).
- the crutch (32) is unlocked and it can be pivoted until the locking lug (35), pushed by a spring, locks the crutch (32) in its new position.
- the stand (32) In the high position and in the low position, the stand (32) is held in abutment by elastic stops (56, 63), which make it possible to take up play in the mechanisms and eliminate the noise caused by this play.
- Figures 14 and 15 show the bar (8) which carries the lug (61) and the fixing of this bar (8) in the zone of the axle of the rear wheel of the bicycle by means of a connecting rod (64 ) which is attached to the axle of the wheel (big bore) or an eyelet of the bicycle frame (small bore).
- the precise positioning of the pin (61) is ensured by adjustment in three dimensions:
- the lug (61) is fixed on a plate which is fixed on the axle (9) of the rear wheel (4) and on the eyelets provided on the bicycle (1).
- the length of the connecting rod (71) is provided so that the wheel (38) of the stand (32) leaves the ground slightly when this connecting rod (71) is fixed on the bicycle. This makes it possible to take into account the fact that the point of contact of the wheel (38) with the ground is not always well aligned with the straight line which passes through the two points of contact of the wheels (3) and (4) of the bicycle.
- Figures 16 and 17 show the trailer in “storage” mode.
- the footprint very limited, is similar to that of a suitcase (approximately 400 mm x 300 mm).
- the trailer In “storage” mode, the trailer can be placed in a cover (41) which can leave the wheels (21) exposed (FIGS. 18 and 19).
- the arms (22) are in the lower stop position, resting on the pin (52).
- the spacing of the wheels (21) is approximately 300 mm. This allows, when desired, to transport the trailer (in the street, a bus, a metro, a train) by pulling it as you do for a shopping trolley, with a very small footprint.
- the load carrier (15) can be used with standard equipment (child seats, saddlebags, etc.)
- the load support (15) can also be used with specific equipment: two-seater seats for children (42, 43) and boxes (44) whose dimensions are adapted to the needs of users (craftsmen, delivery people, etc.).
- Figure 20 shows a transverse two-seater seat (42) (the two children are side by side).
- Figure 21 shows a longitudinal two-seater seat (43) (the two children are one behind the other). In both cases, children are seated with their feet lower than their seat, which is important for their comfort and safety.
- Figure 23 shows, in the reference position, a trailer variant (11) with two main modifications compared to the solution which has just been presented: the wheels (21) are inclined and the drift rotation device is integrated in upper arm (22) in a tube (108).
- the fin rotation device housed in the tube (108g) is shown in detail in Figures 24 and 25, which are elevation sections of the arm (22g), from the left side, in the area of its articulation axis (101).
- the arm (22g) has an upper part (102) and a lower part (103).
- the upper part (102) is connected to the axis of articulation of the arm (101).
- the lower part (103) is connected to the wheel (21) (not shown).
- the bearing surfaces of the two silent blocks (104) and (105) form a angle with the direction of the pressing force of the wheel (21) on the ground.
- the angles are in opposite directions for the two silent blocks (104) and (105).
- the upper part (102) is composed of an upper block (107) which is fixed on the tube (108g) which envelops the lower part (103).
- the lower part (103) is made up of a lower block (109) which is fixed to an angle iron (110), extended by a stop plate (111) and a tube (112).
- Figure 28 shows horizontal sections of the arm, which explain how the relative movements of the two parts of the arm are limited by the stops.
- the four stops (113, 114, 115, 116) can come into contact with the tube (108g).
- the stop plate (111) can also come into contact with the tube (108g).
- the stops (113, 116) are in contact with the tube (108g) with, possibly, a prestressing force.
- This prestress makes it possible to trigger the start of the drift rotation only when the pressing force of the stabilization wheel (21) on the ground reaches a predetermined value.
- This preload improves stability at slow speed, but it slows down the onset of inclination of the bicycle (1) at cruising speed. It is possible to predetermine the value of this prestress to properly meet the expectations of the users of the trailer (11).
- the stop plate (111) is not in contact with the tube (108).
- the arm In the "In stop” position, right column, the arm is either in the high stop (maximum inclination of the bicycle), or in the low stop (operating in reverse tends to press the arm against its lower stop):
- the stop plate (111) is in contact with the tube (108g): o either towards the outside (case shown in Figure 26) when the arm is at the top stop; o either inwards (for reverse operation.
- Figures 27 and 28 show a trailer (11) with a box (122) which is placed behind the rear wheel (4) of a bicycle.
- the trailer (11) is articulated at the front on the axle (9) of the rear wheel (4) at both ends of the axle (9).
- the trailer (11) bears at the rear on an idler wheel (120) which can be oriented by means of an axle (121).
- Two arms (22d, 22g) terminated by stabilizing wheels (21d, 21g) are articulated on the trailer on longitudinal axes (24d,
- the trailer (11) has a box (122) for transporting children and/or groceries and equipment.
- a handle (123) makes it possible to move the trailer (11) when it is unhooked from the bicycle.
- the handle (123) has several positions: the high positions are used for moving the trailer (11) in autonomous mode. The low positions make it possible to limit the overall dimensions in depth of the trailer (11) when it is placed in a vertical position resting on its wheels (21) and stops (124).
- Figures 27 and 28 show a trailer (11) which is fixed on the axis (9) of the rear wheel (4). In another embodiment, it is possible to fix it on lugs, as is the case for the trailer which is shown, in particular, in Figures 10 to 15.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Tires In General (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2007132A FR3112116A1 (fr) | 2020-07-06 | 2020-07-06 | Remorque pour bicyclette |
| PCT/FR2021/051232 WO2022008830A1 (fr) | 2020-07-06 | 2021-07-05 | Remorque pour bicyclette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4175868A1 true EP4175868A1 (fr) | 2023-05-10 |
Family
ID=74183186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21746512.9A Withdrawn EP4175868A1 (fr) | 2020-07-06 | 2021-07-05 | Remorque pour bicyclette |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4175868A1 (fr) |
| FR (1) | FR3112116A1 (fr) |
| WO (1) | WO2022008830A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032166A (en) * | 1976-02-26 | 1977-06-28 | Montgomery W Leon | Bicycle package transport device |
| DE3138789A1 (de) | 1981-09-30 | 1983-04-14 | Hans-Jürgen Dr. 3057 Neustadt Schramm | "zusatzgeraet fuer ein fahrrad" |
| NL1007497C2 (nl) | 1997-11-10 | 1999-05-11 | Flip Ziedses Des Plantes | Draaggestel en samenstel van draaggestel en tweewieler. |
| DE202013004630U1 (de) * | 2012-05-19 | 2013-09-24 | Albert Schmid | Zweispur-Anhänger für ein Fahrrad und Gespann mit einem derartigen Zweispur-Anhänger |
-
2020
- 2020-07-06 FR FR2007132A patent/FR3112116A1/fr not_active Ceased
-
2021
- 2021-07-05 WO PCT/FR2021/051232 patent/WO2022008830A1/fr not_active Ceased
- 2021-07-05 EP EP21746512.9A patent/EP4175868A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR3112116A1 (fr) | 2022-01-07 |
| WO2022008830A1 (fr) | 2022-01-13 |
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