FR3095798A1 - Mécanisme de support pour supporter de manière ajustable en hauteur d’un pare-brise sur un véhicule de type à selle et procédé relatif - Google Patents
Mécanisme de support pour supporter de manière ajustable en hauteur d’un pare-brise sur un véhicule de type à selle et procédé relatif Download PDFInfo
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- FR3095798A1 FR3095798A1 FR2004536A FR2004536A FR3095798A1 FR 3095798 A1 FR3095798 A1 FR 3095798A1 FR 2004536 A FR2004536 A FR 2004536A FR 2004536 A FR2004536 A FR 2004536A FR 3095798 A1 FR3095798 A1 FR 3095798A1
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- 230000007246 mechanism Effects 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims description 26
- 230000003993 interaction Effects 0.000 claims description 15
- 230000003247 decreasing effect Effects 0.000 claims description 9
- 238000013459 approach Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 description 8
- 230000007423 decrease Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
-
- 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
- B62J17/00—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
- B62J17/02—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for shielding only the rider's front
- B62J17/04—Windscreens
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Control Devices (AREA)
- Window Of Vehicle (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
- Lock And Its Accessories (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
La présente invention concerne un mécanisme de support (35) pour supporter de manière ajustable en hauteur un pare-brise (6) sur un véhicule de type à selle (1), comprenant : un premier cadre stationnaire (5), qui peut être fixé à un corps (2) du véhicule (1), un pare-brise (6) et un second cadre ajustable (7), qui est fixé au pare-brise (6) et peut coulisser par rapport au premier cadre stationnaire (5) ; le mécanisme de support (35) comprend une manette (14) mobile d’un seul tenant avec le second cadre ajustable (7) ; la manette (14) comprend des moyens de mise en prise (15) ; la manette (14) est mobile sélectivement dans au moins une position de verrouillage (L), dans laquelle les moyens de mise en prise (15) verrouillent le second cadre ajustable (7) sur le premier cadre stationnaire (5), en fixant ainsi le pare-brise (6) à une hauteur souhaitée par rapport au premier cadre stationnaire (5) ou au moins dans une position de déverrouillage (U), dans laquelle des moyens de mise en prise (15) laissent libre le mouvement du second cadre ajustable (7) par rapport au premier cadre stationnaire (5). Figure pour abrégé : Fig. 2b
Description
The present invention relates to a support mechanism for height adjustably supporting a windscreen on a saddle-type vehicle.
The present invention also relates to a method of adjusting the height of a windscreen of a saddle-type vehicle.
Saddle-type vehicles are known comprising a body, a front wheel and a rear wheel which are operatively connected to the body.
Saddle-type vehicles are also known comprising one rear wheel and two front wheels, or one front wheel and two rear wheels, or two front and two rear wheels.
Furthermore, saddle-type vehicles are also known with two front or rear wheels, which are mounted in such a way to be leaning with respect to the body.
Saddle-type vehicles can be configured in a variety of ways, e.g. as motorcycles or as scooters.
Saddle-type vehicles generally comprise a front windscreen.
Front windscreens are generally used to shield the rider from the air flow caused by the motion of the vehicle or against road debris.
The amount of air flow received by the rider depends on the height of the windscreen, which in turn corresponds to a position of the windscreen itself.
In particular, the higher the windscreen, the lower the amount of air flow impinging the rider.
However, the higher the windscreen, the higher the aerodynamic drag, which acts on the vehicle.
Various height-adjustable windscreens have been proposed in accordance with the ride-preferences of the rider, the usage of the vehicle and the like.
For example, EP-A-3192729, in the name of the same Applicant, discloses a saddle-type vehicle comprising a support mechanism, which supports the windscreen at an adjustable height with respect to the body of the vehicle.
In greater detail, the support mechanism comprises:
- a first fixed frame, which is fixed to the body of the vehicle; and
- a second frame, which is fixed to the windscreen and is movable with respect to the first fixed frame, in order to adjust the height of the windscreen.
In greater detail, the second frame and, therefore, the windscreen can be positioned at a plurality of discrete locking positions and respective discrete heights with respect to the first fixed frame. Still more precisely, a given locking position of the windscreen corresponds to a relative height of the windscreen.
To this purpose, the first fixed frame comprises a plurality of first teeth and first recesses alternate to one another.
The second frame comprises a plurality of second teeth and second recesses alternate to one another.
The first teeth engage respective second recesses as well as the second teeth engage respective first recesses.
The first and the second teeth have a complementary triangle longitudinal cross section, in particular a sawtooth-shaped cross section.
In this way, in each locking position, the second teeth of the second frame engage different respective first recesses of the first frame.
The user adjusts the height of the windscreen by causing the sliding of the second frame with respect to the first frame, from one locking position to another locking position.
The smallest adjustment possible of the height of the windscreen is limited by the pitch of the first and the second teeth, i.e. by their longitudinal dimensions.
The support mechanism further comprises two adjustment nuts, which are inserted by the user inside respective seats defined by the first fixed frame, so as to fasten the second frame and, therefore, the windscreen to the first fixed frame in the desired locking position and at the desired height.
Since at least two nuts are used to fix the windscreen to the first fixed frame, it is necessary for the rider to use both hands to move the windscreen first and to fasten the nuts then.
Furthermore, the known support mechanism allows the rider to adjust the height of the windscreen only in a plurality of discrete positions. Accordingly, the windscreen of EP-A-3192729 may be adjusted at a height which is fit for the rider, but which is sub-optimal for the reduction of the aerodynamic drag, or vice versa.
A need is therefore felt within the industry to provide a support mechanism, which can be conveniently adjusted by using only one hand and in a single movement, so as to ease the adjustment operation.
Furthermore, a need is felt within the industry to allow a continuous adjustment of the height of the windscreen.
It is an object of the present invention to provide a support mechanism, allowing to meet at least one of the aforementioned needs in a simple and cost-effective manner.
This object is achieved by a support mechanism for height adjustably supporting a windscreen on a saddle-type vehicle. The support mechanism comprises a first stationary frame, which is fixable to a body of said vehicle; said windscreen; and a second adjustable frame, which is fixed to said windscreen and is slidable with respect to said first stationary frame; characterized by comprising a handle, which is integrally movable with said second adjustable frame and comprises engaging means; said handle being selectively movable in: at least one locking position, in which said engaging means lock said second adjustable frame on said first stationary frame, thus fixing said windscreen at a desired height with respect to said first stationary frame; or in at least one unlocking position, in which said engaging means leave free the movement of said second adjustable frame with respect to said first stationary frame.
The support mechanism can be further improved according to various advantageous embodiments.
According to one embodiment, said engaging means can be frictionally fitted against said first stationary frame with a first value of a locking force greater than a threshold value and directed parallel to a sliding direction of said second adjustable frame with respect to said first stationary frame, when said handle is set, in use, in said at least one locking position; said engaging means exerting, in use, a second value of said locking force lower than said threshold value or null, when said handle is set, in use, in said at least one unlocking position.
According to one embodiment, said engaging means can be spaced from said first stationary frame, when said handle is set, in use, in said at least one unlocking position.
According to one embodiment, the support mechanism can comprise elastic means, which are interposed between said engaging means and said first stationary frame.
According to one embodiment, said elastic means can elastically load, in use, said handle towards said at least one locking position, when said handle is set in said at least one locking position; and/or in that said elastic means can elastically load, in use, said handle towards said at least one unlocking position, when said handle is set in said at least one unlocking position.
According to one embodiment, said engaging means and elastic means can be configured in such a way that a graph of a further force acted, in use, by said engaging means on said elastic means, orthogonally to said sliding direction, comprises a first increasing stretch, as said handle moves, in use, from said at least one unlocking position towards an intermediate position, which is arranged between said at least one locking position and said at least one unlocking position.
According to one embodiment, said graph can comprise a second decreasing stretch subsequent to said first increasing stretch, as said handle moves, in use, from said intermediate position to said at least one locking position.
According to one embodiment, said engaging means can comprise at least one cam; said at least one cam being frictionally fitted against said first stationary frame with said first value of said locking force greater than said threshold value and directed parallel to said sliding direction of said second adjustable frame with respect to said first stationary frame, when said handle is set, in use, in said at least one locking position; said at least one cam exerting, in use, said second value of said locking force lower than said threshold value or null, when said handle is set, in use, in said at least one unlocking position.
According to one embodiment, said at least one cam can be rotatable about an axis, transversal to said direction and parallel to said stationary frame, and can comprise a profile contacting said elastic means; said profile interacting with said elastic means mostly on a first side of a plane, when said handle is set, in use, in said at least one locking position; said profile interacting with said elastic means mostly on a second side, opposite to said first side, of said plane, when said handle is set, in use, in said at least one unlocking position; said plane being defined by said axis and by a further direction orthogonal to said sliding direction and said axis; said at least one cam being movable from said first side towards said second side, when said handle moves, in use, from said at least one unlocking position to said at least one locking position.
According to one embodiment, said profile symmetrically can extend with respect to said plane when said handle is in said intermediate position.
According to one embodiment, said elastic means can comprise at least one spring; said at least one spring comprising: two first portions contacting said first stationary frame; and a second interaction portion, interposed between said first portions and contacting, in use, said profile.
According to one embodiment, said handle can comprise two cams spaced from one another, and by comprising a pair of said springs interposed, each, between a relative cam and said first stationary frame.
According to one embodiment, the support mechanism can be characterized in that when said handle is set, in use, in said at least one unlocking position, said windscreen can be moved among a plurality of continuously consecutive positions with respect to said first stationary frame; said windscreen being locked, in use, in a desired one of said continuously consecutive positions, when said handle is set in a respective said locking position).
According to one embodiment, said first stationary frame can comprise a plurality of flat guides and said second adjustable frame can comprise a plurality of sliders; said sliders being engaged in respective said flat guides; said sliders being slidable in respective said flat guides among a plurality of continuously consecutive positions of said flat guides, when, said second adjustable frame slides, in use, with respect to said first stationary frame.
The present invention also relates to a saddle-type vehicle comprising a body and a support mechanism as described above.
The present invention also relates to a method of adjusting the height of a windscreen of a saddle-type vehicle. The method of adjusting the height of a windscreen of a saddle-type vehicle with respect to a body of said vehicle, comprises the steps of: i) fitting a first stationary frame of a support mechanism to said body; and ii) adjusting the position of a second adjustable frame of said support mechanism with respect to said first stationary frame; characterized by comprising the further steps of: iii) selectively moving a handle between at least one locking position in which engaging means defined by said handle lock said second adjustable frame on said first stationary frame, thus fixing said windscreen at a desired height; and at least one unlocking position in which said engaging means leave free the movement of said second adjustable frame with respect to said first stationary frame.
The method of adjusting the height of a windscreen of a saddle-type vehicle can be further improved according to various advantageous embodiments.
According to one embodiment, the method can comprise the steps of: iv) frictionally fitting said engaging means against said first stationary frame with a first value of a locking force greater than a threshold value and directed parallel to a sliding direction of said second adjustable frame with respect to said first stationary frame, when said handle is set in said at least one locking position; and v) exerting a second value of said locking force lower than said threshold value or null by means of said engaging means on said first stationary frame, when said handle is set in said at least one unlocking position.
According to one embodiment, the method can comprise a step vi) of spacing said engaging means from said first stationary frame, when said handle is set in said at least one unlocking position.
According to one embodiment, the method can comprise the steps of: vii) elastically loading said handle towards said at least one locking position, when said handle is in said at least one locking position; and/or viii) elastically loading said handle towards said at least one unlocking position, when said handle is in said at least one unlocking position; said steps vii) and/or viii) being carried out by means of elastic means.
According to one embodiment, the method can comprise the step ix) of exerting a further force by means of said engaging means on said elastic orthogonally to said sliding direction; a graph of said further force comprising a first increasing stretch, as said handle moves from said at least one unlocking position towards an intermediate position, which is arranged between said at least one locking position and said at least one unlocking position.
According to one embodiment, the method can be characterized in that said graph comprises a second decreasing stretch subsequent to said first increasing stretch, as said handle moves from said intermediate position to said at least one locking position.
According to one embodiment, the method can comprise the steps of: x) rotating about an axis at least one cam of said engaging means; said axis being transversal to said direction and parallel to said stationary frame; xi) contacting at least one spring of said elastic means interposed between said at least one cam and said first stationary frame by means of a profile of said at least one cam; said step xi) comprises the steps of: xii) contacting a portion of said at least one spring by means of said profile mostly on a first side of a plane, when said handle is in said at least one locking position; xiii) contacting said portion of said at least one spring by means of said profile mostly on a second side, opposite to said first side, of said plane, when said handle is in said at least one unlocking position; said plane being defined by said axis and by a further direction orthogonal to said sliding direction and said axis; and xiv) moving said at least one cam from said first side towards said second side, when said handle moves from said at least one unlocking position to said at least one locking position.
According to one embodiment, the method can comprise the step xv) of arranging said profile symmetrically with respect to said plane when said handle is in said intermediate position.
According to one embodiment, the method can comprise the steps of: xvi) increasing a maximum elastic deflection of said portion of said at least one spring parallel to said further direction, when said handle moves from said at least one unlocking position to said intermediate position and said profile approaches said first stationary frame along said further direction ; and/or xvii) decreasing said maximum elastic deflection of said portion of said at least one spring parallel to said further direction, when said handle moves from said intermediate position to said at least one locking position and said profile moves away from said first stationary frame along said further direction.
According to one embodiment, the method can comprise the steps of: xviii) moving said windscreen among a plurality of continuously consecutive positions with respect to said first stationary frame, when said handle is in said at least one unlocking position; and xix) locking said windscreen in a desired one of said continuously consecutive positions, when said handle is set in a respective said locking position.
BRIEF DESCRIPTION OF THE DRAWINGS
One preferred, non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
With reference to Figure 1, numeral 1 indicates a saddle-type vehicle.
In the embodiment shown, the saddle-type vehicle is a motorcycle. Alternatively, the saddle-type vehicle is a scooter.
In the following of the present description, expressions like “front”, “rear”, “bottom”, “upwardly” and “downwardly” are used with reference to a normal advancing direction and operative position of motorcycle 1 shown in the attached Figures.
Motorcycle 1 substantially comprises:
- a body 2;
- a front wheel 3 and a rear wheel 4; and
- a support mechanism 35, for supporting a front windscreen 6 at a plurality of adjustable positions with respect to body 2.
In detail, support mechanism 35 comprises (Figures 2a, 2b, 3 to 8):
- a stationary frame 5, which is fixed to body 2 through first known and not-shown connecting means;
- windscreen 6; and
- an adjustable frame 7, which is fixed to windscreen 6, by the use of second known and not-shown connecting means.
In the embodiment shown, adjustable frame 7 is made of plastic.
Stationary frame 5 comprises a bottom main body 5a and a pair of arms 5b, which protrude upwardly from body 5a and are spaced from one another.
Similarly, adjustable frame 7 comprises a bottom main body 7a and a pair of arms 7b, which protrude upwardly from body 7a and are spaced from one another.
Bodies 5a, 7a are superimposed on one another. Arms 5b, 7b are superimposed on one another.
Furthermore, as shown in Figures 5 to 8, stationary frame 5 comprises guides 8, 9 and 10, extending longitudinally to stationary frame 5 and parallel to a direction X.
Adjustable frame 7 comprises a plurality of sliders 11, 12, 13, three in the embodiment shown, which are slidably mounted parallel to direction X inside relative guides 8, 9, 10.
It is also possible to define an axis Y, perpendicular to direction X and to frames 5, 7 and an axis Z, perpendicular to direction X and to axis Y. Axes Y and Z define a plane P.
When sliders 11, 12, 13 are engaged with the corresponding guides 8, 9 and 10, adjustable frame 7 can slide with respect to stationary frame 5 along direction X.
Since windscreen 6 is fixed to adjustable frame 7, windscreen 6 moves integrally with adjustable frame 7.
Sliders 11 and 12 protrude from respective arms 7b of adjustable frame 7 towards stationary frame 5. Guides 8, 9 are formed within respective arms 5b of stationary frame 5.
Slider 13 protrudes from main body 7a and guide 10 is formed within main body 5a.
In particular, sliders 11 and 12 are provided with a through hole 16 each, extending parallel to axis Z (Figure 7).
Guides 8, 9 and 10 are shaped like rectangles, having a certain length, measured parallel to direction X and a certain width, measured parallel to axis Z. Therefore, guides 8, 9 and 10 are flat and toothless.
Furthermore, slider 13 is provided with a stopper 38 at its side facing stationary frame 5. As shown in Figures 5 to 8, stopper 38 is integral with slider 13 and it is larger than the width of guide 10.
In greater detail, when sliders 11, 12, 13 are engaged with the corresponding guides 8, 9 and 10, stopper 38 protrudes from guide 10, while being in contact with stationary frame 5, as shown in Figures 5, 6 and 8.
Thanks to stopper 38, when adjustable frame 7 is moved with respect to stationary frame 5 parallel to direction X, adjustable frame 7 is prevented from being disengaged from stationary frame 5.
The length of guides 8, 9, 10 defines the stroke length of windscreen 6 along direction X.
Advantageously, support mechanism 35 comprises a handle 14 (Figures 3, 4, 9, 10), which is integrally movable with adjustable frame 7; handle 14 comprises engaging means 15 and is selectively movable in a plurality of locking positions L (one of which is shown in Figures 4, 10), in which engaging means 15 lock adjustable frame 7 on stationary frame 5 or in a plurality of unlocking positions U (one of which is shown in Figures 3, 9) in which engaging means 15 leave free the movement of adjustable frame 7 with respect to stationary frame 5.
In particular, for each position of adjustable frame 7 along direction X, it is possible to identify a locking position L and a relative unlocking position U of handle 14.
In detail, handle 14 comprises:
- a grip portion 14a, which can be held with a single hand by the rider; and
- a pair of arms 14b protruding from the grip portion 14a and hinged to respective holes 16 with two pins 18 about axis Z. Consequently, handle 14 can be switched from the locking position L to the unlocking position U, by its rotation about axis Z.
In the embodiment shown, engaging means 15 comprise two cams 32, 33, spaced from one another (Figures 3, 4).
In particular, cams 32, 33 are integral with handle 14, therefore they are rotatable about axis Z as well.
In other words, handle 14, cams 32, 33 and adjustable frame 7 form a single assembly.
Support mechanism 35 further comprises elastic means 19 which are interposed between respective cams 32, 33 and stationary frame 5. In the embodiment shown, elastic means 19 comprise a pair of springs 17, associated to respective cams 32, 33 (Figures 3, 4, 9, 10).
Preferably, springs 17 are part of the same single assembly made of handle 14, cams 32, 33 and adjustable frame 7.
As it will be evident from the foregoing of the present description, cams 32, 33 are frictionally fitted against stationary frame 5 with a tangential force T. Value T1 of tangential force T is higher than a threshold value T0 and is parallel to direction X, when handle 14 is in the locking position L, so as to keep locked stationary frame 5 and adjustable frame 7 to one another (Figure 10).
When handle 14 is in the unlocking position U, stationary frame 5 exerts on cams 32, 33 a value T2 of tangential force T, which is lower than the threshold value T0, so as to render adjustable frame 7 freely movable along direction X with respect to stationary frame 5 (Figures 3 and 9).
In particular, each cam 32, 33 defines respective end positions of corresponding arms 14b of handle 14, which are opposite to grip portion 14a.
In detail, each cam 32, 33 comprises:
- a profile 34, which contacts the relative spring 17; and
- a profile 37, which remains substantially detached from relative spring 17.
Profiles 34 and 37 of each cam 32, 33 are sharply jointed, in the embodiment shown, in an edge 39, parallel to axis Z.
Profiles 34, 37 eccentrically extend about axis Z of relative cams 32, 33.
In the embodiment shown, each cam 32, 33 further comprises a respective detent 36. When handle 14 is in the locking position L, detents 36 are in contact with sliders 11, 12.
Detents 36 are used to prevent handle 14, when rotating from the unlocking position U towards the locking position L, from rotating beyond the locking position L.
In particular, each spring 17 has a prevalent extension parallel to direction X.
Each spring 17 comprises (Figures 9 and 10):
- a pair of portions 17a, contacting stationary frame 5 at spaced locations parallel to direction X;
- an interaction portion 17b, contacting relative cam 32, 33 and interposed between respective portions 17a along direction X; and
- a pair of curved portions 17c, each interposed between respective portions 17a and respective interaction portion 17b along direction X.
In an undeformed condition of springs 17, interaction portions 17b are interposed between respective cams 32, 33 and stationary frame 5 along axis Y and substantially extend parallel to direction X.
In the undeformed condition, each spring 17 extends symmetrically with respect to plane P.
In the undeformed condition, curved portion 17c of each spring 17 protrude from interaction portion 17b towards handle 14.
Furthermore, springs 17 comprise respective openings 17d, through which sliders 11, 12 pass.
In detail, cams 32, 33 exert on relative springs 17 normal forces N, parallel to axis Y.
In particular, when handle 14 is set in the locking position L, normal force N is equal to a value N1 (Figures 10 and 11).
As a consequence of the normal force N and of the consequent elastic deflection of springs 17, springs 17 in turn exert a further force on stationary frame 5 at the contact points between springs 17 and stationary frame 5.
This further force has, due to the friction, a component parallel to direction X which is opposite and equal in amplitude with respect to tangential force T.
Differently, when handle 14 is set in the unlocking position U, normal force is equal to a value N2 (Figures 9 and 11).
In the embodiment shown, when handle 14 is set in the unlocking position U, cams 32, 33 are spaced from stationary frame 5 and value T2 is substantially null (see Figures 3 and 9).
In further detail, the threshold value T0 is the minimum value of the tangential force T that stationary frame 5 needs to exert on springs 17, as an indirect consequence of the normal force N that cams 32, 33 exert on relative springs 17, so as to frictionally keep adjustable frame 7 against stationary frame 5. This means that value T1 of tangential force T is higher than or equal to the resultant of external forces which act on support mechanism 35 having a component directed downwardly parallel to direction X, such as a weight force.
Cams 32, 33 and respective springs 17 are shaped in such a way that normal force N exerted by cams 32, 33 on relative springs 17 follows the trend of the graph of Figure 11.
In particular, the graph of normal force N comprises an increasing stretch 25, as handle 14 moves from the unlocking position U towards an intermediate position S (not shown in Figures 9 and 10), which is arranged between the locking position L and the unlocking position U.
Furthermore, the graph of normal force N comprises a decreasing stretch 26, as handle 14 moves from intermediate position S to the locking position L.
In the embodiment shown, profile 34 of each cam 32, 33 contacts a relative spring 17 on a first and/or on a second side 34a, 34b of plane P (respectively bottom side and top side with reference to Figures 9 and 10), opposite to each other.
When handle 14 is in the unlocking position U (Figures 3 and 9), profile 34 of each cam 32, 33 interacts with interaction portion 17b of relative spring 17 mostly on the first side 34a of plane P. Conversely, when handle 14 is in the locking position L (Figures 4 and 10), profile 34 of each cam 32, 33 interacts with interaction portion 17b of relative spring 17 mostly on the second side 34b of plane P.
As shown in Figures 9 and 10, profile 34 of each cam 32, 33 approaches stationary frame 5 parallel to axis Y when, in use, handle 14 moves from unlocking position U to intermediate position S, so as to increase the elastic deflection of springs 17 parallel to axis Y.
In this condition, as the elastic deflection increases, the distances d of stationary frame 5 from respective interaction portions 17b parallel to axis Y decrease from a value d1 (Figure 9) to a value d2 (not shown).
Similarly, profile 34 of each cam 32, 33 moves away from stationary frame 5 parallel to axis Y when, in use, handle 14 moves from intermediate position S to locking position U, so as to decrease the elastic deflection of springs 17 parallel to axis Y.
Accordingly, as the elastic deflection decreases, distances d increase from value d2 to a value d3 (Figure 10).
In the embodiment shown, value d2 is higher than values d1, d3 of distances d parallel to axis Y.
Preferably, when handle 14 is in the intermediate position S, profile 34 extends symmetrically with respect to plane P and normal force N is equal to a maximum value Nmax (Figure 11).
As an indirect consequence of the fact that cams 32, 33 exert on springs 17 the maximum value of normal force N, stationary frame 5 exerts on springs 17 a corresponding maximum value Tmax of tangential force T, which is higher than the threshold value T0. Nmax corresponds to the maximum value between the increasing stretch 25 and the decreasing stretch 26 of normal force N of the graph of Figure 11.
With reference to Figure 10, consequently to the action of normal forces N having value N1 acted by relative cams 32, 33 on respective interaction portions 17b when handle 14 is in the locking position L, interaction portions 17b exert on respective cams 32, 33 respective first reaction forces F1 at the contact points between respective cams 32, 33 and springs 17 parallel to axis Y and directed towards cams 32, 33. First reaction forces F1 have equal amplitude and opposite direction with respect to relative normal forces N having respective values N1.
Axis Z is offset from the lines of action parallel to axis Y of first reaction forces F1. Therefore, a first moment arm b1 can be measured between the line of action of each first reaction force F1 and axis Z. As a result, first reaction forces F1 generate respective first torques M1 (anticlockwise with reference to Figure 10), thus elastically keeping handle 14 in the locking position L.
In a similar manner (Fig. 9), consequently to the action of the normal force N with value N2 acted by cams 32, 33 on relative interaction portions 17b when handle 14 is at the unlocking position U, interaction portions 17b exert on cams 32, 33 relative second reaction forces F2, parallel to axis Y.
Also in this condition, axis Z is offset from the lines of action parallel to axis Y of the second reaction forces F2. Therefore, a second moment arm b2 can be measured between the line of action of each second reaction force F2 and axis Z. As a result, second reaction forces F2 generate respective second torques M2 (clockwise with reference to Figure 9), which elastically keep handle 14 in the unlocking position U.
In the embodiment shown, first and second torques M1, M2 are opposite to one another.
More generally, a generic moment arm can be measured between axis Z and the line of action of a generic reaction force that each spring 17 acts on respective cam 32, 33, parallel to axis Y, when handle 14 is in one of the continuously consecutive positions between unlocking position U and locking position L, except for the intermediate position S.
Therefore, while handle 14 is in one of the continuously consecutive positions from locking position L to intermediate position S, two first generic torques act on handle 14, tending to elastically bring back handle 14 in the locking position L.
Similarly, while handle 14 is in one of the continuously consecutive positions from intermediate position S to unlocked position U, two second generic torques act on handle 14, tending to elastically bring handle 14 in the unlocking position U.
In use, the operation of support mechanism 35 is described as of a condition of Figure 2a, in which windscreen 6 is at a first height with respect to body 2 and handle 14 is in locking position L.
In order to adjust the height of windscreen 6 with respect to body 2, the user selectively rotates handle 14 about axis Z between the locking position L and the unlocking position U (Figures 3, 4, 9, 10), passing through the intermediate position S. Cams 32, 33 rotate integrally with handle 14.
At this stage, the rider moves handle 14 along direction X with respect to stationary frame 5. In this way, the rider arranges windscreen 6 in one of the continuously consecutive positions which corresponds to a desired height of windscreen 6 (Figure 2b), within the stroke length of windscreen 6.
Once windscreen 6 has been positioned at the desired height, the rider rotates handle 14 from the unlocking position U towards the locking position L.
In greater detail, while handle 14 is in the unlocking position U, profiles 34 of each cam 32, 33 interact with respective springs 17 mostly on the first side 34a of plane P, and stationary frame 5 exerts on springs 17 respective tangential forces T having values T2 (Figure 9).
While handle 14 is in the unlocking position U, distances d of stationary frame 5 from respective interaction portions 17b are equal to first value d1.
Since values T2 are lower than the threshold value T0, cams 32, 33 are not frictionally fitted against stationary frame 5. Therefore, as long as handle 14 is in unlocking position U, adjustable frame 7 can be still slid along direction X.
In addition, while the rider moves handle 14 along direction X with respect to stationary frame 5, torques M2 generated by respective springs 17 contribute to elastically keep handle 14 in the unlocking position U.
Furthermore, thanks to stopper 38, when the rider moves handle 14 with respect to stationary frame 5 along direction X, adjustable frame 7 can be prevented from being disengaged from stationary frame 5.
When handle 14 is rotated from the unlocking position U towards the intermediate position S, the normal forces N acted by cams 32, 33 on relative springs 17 increase from the value N2 up to the maximum value Nmax (along the increasing stretch 25 of the graph of Figure 11).
When handle 14 is in the intermediate position S, distances d reach the value d2 and profile 34 preferably extends symmetrically with respect to plane P.
When handle 14 is rotated from the intermediate position S to the locking position L, the normal forces N exerted by cams 32, 33 on relative springs 17 decrease from the maximum value Nmax to the values N1 (along the decreasing stretch 26 of the graph of Figure 11). Accordingly, distances d of stationary frame 5 from respective interaction portions 17b increase to third value d3.
When handle 14 is in the locking position L, the values of the normal forces N acted by cams 32, 33 on relative springs 17 are equal to N1. The corresponding values T1 of tangential forces T, which stationary frame 5 exerts on springs 17 exceed the threshold value T0.
Stationary frame 5 and adjustable frame 7 are therefore frictionally fitted. Thus, windscreen 6 is prevented from moving from the desired height.
Furthermore, profiles 34 interact with relative springs 17 mostly on second side 34b of plane P.
Thus, first torques M1 generated by relative springs 17, elastically tend to keep handle 14 in the locking position L. Thanks to first torques M1, handle 14 is prevented from rotating undesirably from the locking position L.
In addition, when handle 14 is in one of the continuously consecutive positions from locking position L to intermediate position S, the first generic torques generated by relative springs 17 act on handle 14, tending to elastically bring back handle 14 in the locking position L.
Furthermore, when handle 14 is in the locking position L, detents 36 abut on respective sliders 11, 12, thus preventing handle 14 to rotate beyond locking position L.
The advantages of support mechanism 35 and of the method of adjusting the height of windscreen 6 will be clear from the above description.
In particular, adjustable frame 7 can be moved and locked with respect to stationary frame 5 by respectively moving handle 14 with respect to stationary frame 5 and by rotating handle 14 about axis Z.
Therefore, it is possible to adjust the height of windscreen 6 with respect to stationary frame 7 by easily acting on handle 14.
These operations on handle 14 can be carried out by the rider in one movement.
In this way, differently from the known solution described in the introductory part of the description, it is possible to conveniently to adjust the height of windscreen 6 by using only one hand.
The fixing of adjustable frame 7 to stationary frame 5 is thus made significantly more comfortable, because the rider is no longer required to fasten or to unfasten any adjustment nuts.
Furthermore, since the movement of adjustment frame 7 with respect to stationary frame 5 is obtained by simply sliding sliders 11, 12, 13 in respective guides 8, 9, 10, which are flat and toothless, windscreen 6 can be adjusted at any one of the continuous heights within its stroke length.
In other words, handle 14 is configured to perform the same engaging function of teeth and recesses disclosed in EP-A-3192729, when set in the locking position, for each of the infinite heights at which windscreen 6 may be positioned within its stroke length.
The adjustment of the height of windscreen 6 with respect to stationary frame 5 is thus made significantly more appropriate and accurate, because the rider has no longer the restriction to position windscreen 6 in few discrete positions only.
In this way, differently from the known solution described in the introductory part of the description, it is possible to conveniently adjust the height of windscreen 6 in the optimal position, which best suits the necessities of the rider and the intention to limit the aerodynamic drag.
Furthermore, it is possible to take advantage of the fact that springs 17 are interposed between relative cams 32, 33 and stationary frame 5.
In particular, the elastic action of springs 17 is effective in recovering the inevitable production tolerances which affect the sizes of profile 34, of stationary frame 5 and of adjustable frame 7 parallel to direction Y.
Furthermore, springs 17 prevent the damaging of profile 34 and of stationary frame 5 when handle 14 is in intermediate position S, in which cams 32, 33 exert the maximum normal force Nmax on relative springs 17, by compensating the rigidity of the parts in contact (34, 5).
Springs 17 are used as well in order to avoid a direct contact between handle 14 and stationary frame 5, thereby limiting wear of these two parts.
Furthermore, springs 17 elastically load engaging means 15 towards locking position L, when handle 14 is set in locking position L and elastically load engaging means 15 towards unlocking position U, when handle 14 is set in unlocking position U.
As a result, the locking position L is a stable equilibrium position, because when handle 14 is slightly displaced from locking position L, it elastically tends to return to locking position L.
This is highly advantageous, because handle 14 could be accidentally slightly displaced from the locking position L, for instance due to vibrations or irregularities of the road surface.
Finally, it is apparent that modifications and variants not departing from the invention may be made to support mechanism 35 and method disclosed herein.
In particular, support mechanism 35 could not comprise springs 17. In this case, cams 32, 33 and stationary frame 5 would be in direct contact when handle 14 is in the locking position L, while they would be preferably spaced apart when handle 14 is in the unlocking position U.
Furthermore, while handle 14 is in unlocking position U and/or in intermediate position S, springs 17 could be elastically deflected, so that respective portions 17b could be in direct contact with stationary frame 5 and value d3 would be null.
Furthermore, cams 32, 33 could be configured in such a way that profiles 34, 37 do not converge in respective edges 39, but towards further profiles, extended parallel to direction X.
Finally, when handle 14 is in intermediate position S, profiles 34 could extend in a non-symmetrical way with respect to plane P.
Claims (25)
- A support mechanism (35) for height adjustably supporting a windscreen (6) on a saddle-type vehicle (1), comprising:
- a first stationary frame (5), which is fixable to a body (2) of said vehicle (1);
- said windscreen (6); and
- a second adjustable frame (7), which is fixed to said windscreen (6) and is slidable with respect to said first stationary frame (5);
characterized by comprising a handle (14), which is integrally movable with said second adjustable frame (7) and comprises engaging means (15);
said handle (14) being selectively movable in:
- at least one locking position (L), in which said engaging means (15) lock said second adjustable frame (7) on said first stationary frame (5), thus fixing said windscreen (6) at a desired height with respect to said first stationary frame (5); or in
- at least one unlocking position (U), in which said engaging means (15) leave free the movement of said second adjustable frame (7) with respect to said first stationary frame (5).
- The support mechanism of claim 1, characterized in that said engaging means (15) are frictionally fitted against said first stationary frame (5) with a first value (T1) of a locking force (T) greater than a threshold value (T0) and directed parallel to a sliding direction (X) of said second adjustable frame (7) with respect to said first stationary frame (5), when said handle (14) is set, in use, in said at least one locking position (L);
said engaging means (15) exerting, in use, a second value (T2) of said locking force (T) lower than said threshold value (T0) or null, when said handle (14) is set, in use, in said at least one unlocking position (U).
- The support mechanism of claim 1 or 2, characterized in that said engaging means (15) are spaced from said first stationary frame (5), when said handle(14) is set, in use, in said at least one unlocking position (U).
- The support mechanism of any one of the foregoing claims, characterized by comprising elastic means (19), which are interposed between said engaging means (15) and said first stationary frame (5).
- The support mechanism of claim 4, characterized in that said elastic means (19) elastically load, in use, said handle (14) towards said at least one locking position (L), when said handle (14) is set in said at least one locking position (L); and/or in that said elastic means (19) elastically load, in use, said handle (14) towards said at least one unlocking position (U), when said handle (14) is set in said at least one unlocking position (U).
- The support mechanism of claim 4 or 5, characterized in that said engaging means (15) and elastic means (19) are configured in such a way that a graph of a further force (N) acted, in use, by said engaging means (15) on said elastic means (19), orthogonally to said sliding direction (X), comprises a first increasing stretch (25), as said handle (14) moves, in use, from said at least one unlocking position (U) towards an intermediate position (S), which is arranged between said at least one locking position (L) and said at least one unlocking position (U).
- The support mechanism of claim 6, characterized in that said graph comprises a second decreasing stretch (26) subsequent to said first increasing stretch (25), as said handle (14) moves, in use, from said intermediate position (S) to said at least one locking position (L).
- The support mechanism of claims 2 to 7, characterized in that said engaging means (15) comprise at least one cam (32, 33);
said at least one cam (32, 33) being frictionally fitted against said first stationary frame (5) with said first value (T1) of said locking force (T) greater than said threshold value (T0) and directed parallel to said sliding direction (X) of said second adjustable frame (7) with respect to said first stationary frame (5), when said handle (14) is set, in use, in said at least one locking position (L);
said at least one cam (32, 33) exerting, in use, said second value (T2) of said locking force (T) lower than said threshold value (T0) or null, when said handle (14) is set, in use, in said at least one unlocking position (U).
- The support mechanism of claim 8, when depending on any one of claims 4 to 7, characterized in that said at least one cam (32, 33) is rotatable about an axis (Z), transversal to said direction (X) and parallel to said stationary frame (5), and comprises a profile (34) contacting said elastic means (19);
said profile (34) interacting with said elastic means (19) mostly on a first side (34a) of a plane (P), when said handle (14) is set, in use, in said at least one locking position (L);
said profile (34) interacting with said elastic means (19) mostly on a second side (34b), opposite to said first side (34a), of said plane (P), when said handle (14) is set, in use, in said at least one unlocking position (U);
said plane (P) being defined by said axis (Z) and by a further direction (Y) orthogonal to said sliding direction (X) and said axis (Z);
said at least one cam (32, 33) being movable from said first side (34a) towards said second side (34b), when said handle (14) moves, in use, from said at least one unlocking position (U) to said at least one locking position (L).
- The support mechanism of claim 9, when depending on claims 6 to 8, characterized in that said profile (34) symmetrically extends with respect to said plane (P) when said handle (14) is in said intermediate position (S).
- The support mechanism of claim 9 or 10, characterized in that said elastic means (19) comprise at least one spring (17); said at least one spring (17) comprising:
- two first portions (17a) contacting said first stationary frame (5); and
- a second interaction portion (17b), interposed between said first portions (17a) and contacting, in use, said profile (34).
- The support mechanism of any one of claims 8 to 11, characterized in that said handle (14) comprises two cams (32, 33) spaced from one another, and by comprising a pair of said springs (17) interposed, each, between a relative cam (32, 33) and said first stationary frame (5).
- The support mechanism of any one of the foregoing claims, characterized in that when said handle (14) is set, in use, in said at least one unlocking position (U), said windscreen (6) can be moved among a plurality of continuously consecutive positions with respect to said first stationary frame (5);
said windscreen (6) being locked, in use, in a desired one of said continuously consecutive positions, when said handle (14) is set in a respective said locking position (L).
- The support mechanism of any one of the foregoing claims, characterized in that said first stationary frame (5) comprises a plurality of flat guides (8, 9, 10) and said second adjustable frame (7) comprises a plurality of sliders (11, 12, 13);
said sliders (11, 12, 13) being engaged in respective said flat guides (8, 9, 10);
said sliders (11, 12, 13) being slidable in respective said flat guides (8, 9, 10) among a plurality of continuously consecutive positions of said flat guides (8, 9, 10), when, said second adjustable frame (7) slides, in use, with respect to said first stationary frame (5).
- A saddle-type vehicle (1) comprising a body (2) and a support mechanism (35) according to any one of the foregoing claims.
- A method of adjusting the height of a windscreen (6) of a saddle-type vehicle (1) with respect to a body (2) of said vehicle (1), comprising the steps of:
i) fitting a first stationary frame (5) of a support mechanism (35) to said body (2); and
ii) adjusting the position of a second adjustable frame (7) of said support mechanism (35) with respect to said first stationary frame (5);
characterized by comprising the further steps of:
iii) selectively moving a handle (14) between:
- at least one locking position (L) in which engaging means (15) defined by said handle (14) lock said second adjustable frame (7) on said first stationary frame (5), thus fixing said windscreen (6) at a desired height; and
- at least one unlocking position (U) in which said engaging means (15) leave free the movement of said second adjustable frame (7) with respect to said first stationary frame (5).
- The method of claim 16, characterized by comprising the steps of:
iv) frictionally fitting said engaging means (15) against said first stationary frame (5) with a first value (T1) of a locking force (T) greater than a threshold value (T0) and directed parallel to a sliding direction (X) of said second adjustable frame (7) with respect to said first stationary frame (5), when said handle (14) is set in said at least one locking position (L); and
v) exerting a second value (T2) of said locking force (T) lower than said threshold value (T0) or null by means of said engaging means (15) on said first stationary frame (5), when said handle (14) is set in said at least one unlocking position (U).
- The method of claim 16 or 17, characterized by comprising a step vi) of spacing said engaging means (15) from said first stationary frame (5), when said handle (14) is set in said at least one unlocking position (U).
- The method of any one of claims 16 to 18, characterized by comprising the steps of:
vii) elastically loading said handle (14) towards said at least one locking position (L), when said handle (14) is in said at least one locking position (L); and/or
viii) elastically loading said handle (14) towards said at least one unlocking position (U), when said handle (14) is in said at least one unlocking position (U);
said steps vii) and/or viii) being carried out by means of elastic means (19).
- The method of claim 19, characterized by comprising the step ix) of exerting a further force (N) by means of said engaging means (15) on said elastic means (19) orthogonally to said sliding direction (X);
a graph of said further force (N) comprising a first increasing stretch (25), as said handle (14) moves from said at least one unlocking position (U) towards an intermediate position (S), which is arranged between said at least one locking position (L) and said at least one unlocking position (U).
- The method of claim 20, characterized in that said graph comprises a second decreasing stretch (26) subsequent to said first increasing stretch (25), as said handle (14) moves from said intermediate position (S) to said at least one locking position (L).
- The method of any one of claims 19 to 21, characterized by comprising the steps of:
x) rotating about an axis (Z) at least one cam (32, 33) of said engaging means (15); said axis (Z) being transversal to said direction (X) and parallel to said stationary frame (5);
xi) contacting at least one spring (17) of said elastic means (19) interposed between said at least one cam (32, 33) and said first stationary frame (5) by means of a profile (34) of said at least one cam (32, 33);
said step xi) comprises the steps of:
xii) contacting a portion (17b) of said at least one spring (17) by means of said profile (34) mostly on a first side (34a) of a plane (P), when said handle (14) is in said at least one locking position (L);
xiii) contacting said portion (17b) of said at least one spring (17) by means of said profile (34) mostly on a second side (34b), opposite to said first side (34a), of said plane (P), when said handle (14) is in said at least one unlocking position (U);
said plane (P) being defined by said axis (Z) and by a further direction (Y) orthogonal to said sliding direction (X) and said axis (Z); and
xiv) moving said at least one cam (32, 33) from said first side (34a) towards said second side (34b), when said handle (14) moves from said at least one unlocking position (U) to said at least one locking position (L).
- The method of claim 22, characterized by comprising the step xv) of arranging said profile (34) symmetrically with respect to said plane (P) when said handle (14) is in said intermediate position (S).
- The method of claim 22 or 23, when depending on claim 20 or 21, characterized by comprising the steps of:
xvi) increasing a maximum elastic deflection of said portion (17b) of said at least one spring (17) parallel to said further direction (Y), when said handle (14) moves from said at least one unlocking position (U) to said intermediate position (S) and said profile (34) approaches said first stationary frame (5) along said further direction (Y); and/or
xvii) decreasing said maximum elastic deflection of said portion (17b) of said at least one spring (17) parallel to said further direction (Y), when said handle (14) moves from said intermediate position (S) to said at least one locking position (L) and said profile (34) moves away from said first stationary frame (5) along said further direction (Y).
- The method of any one of claims 16 to 24, characterized by comprising the steps of:
xviii) moving said windscreen (6) among a plurality of continuously consecutive positions with respect to said first stationary frame (5), when said handle (14) is in said at least one unlocking position (U); and
xix) locking said windscreen (6) in a desired one of said continuously consecutive positions, when said handle (14) is set in a respective said locking position (L).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102019000006684A IT201900006684A1 (it) | 2019-05-09 | 2019-05-09 | Meccanismo di supporto per supportare in modo regolabile in altezza un parabrezza su di un veicolo del tipo a sella e metodo relativo |
| IT102019000006684 | 2019-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3095798A1 true FR3095798A1 (fr) | 2020-11-13 |
| FR3095798B1 FR3095798B1 (fr) | 2022-04-29 |
Family
ID=67513670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR2004536A Active FR3095798B1 (fr) | 2019-05-09 | 2020-05-07 | Mécanisme de support pour supporter de manière ajustable en hauteur d’un pare-brise sur un véhicule de type à selle et procédé relatif |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE102020205663B4 (fr) |
| FR (1) | FR3095798B1 (fr) |
| IT (1) | IT201900006684A1 (fr) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6254166B1 (en) * | 2000-06-30 | 2001-07-03 | Barry A. Willey | Adjustable, readily removable windshield |
| DE60229724D1 (de) * | 2001-03-15 | 2008-12-18 | Honda Access Kk | Installationskonstruktion für frontmontierte teile eines motorrads |
| US7946642B1 (en) * | 2009-11-05 | 2011-05-24 | Yuan-Hwen Cadtool Industrial Co., Ltd. | Motorcycle windshield assembly |
| JP2017121922A (ja) | 2016-01-08 | 2017-07-13 | ヤマハ発動機株式会社 | 鞍乗型車両 |
| JP6298485B2 (ja) * | 2016-03-18 | 2018-03-20 | 本田技研工業株式会社 | 鞍乗り型車両の風防装置 |
| CN208498676U (zh) * | 2018-04-13 | 2019-02-15 | 光阳工业股份有限公司 | 摩托车挡风镜的支撑架构造 |
-
2019
- 2019-05-09 IT IT102019000006684A patent/IT201900006684A1/it unknown
-
2020
- 2020-05-05 DE DE102020205663.3A patent/DE102020205663B4/de active Active
- 2020-05-07 FR FR2004536A patent/FR3095798B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3095798B1 (fr) | 2022-04-29 |
| DE102020205663B4 (de) | 2022-09-29 |
| DE102020205663A1 (de) | 2020-11-12 |
| IT201900006684A1 (it) | 2020-11-09 |
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