JP7185598B2 - saddle-riding vehicle - Google Patents

Description

The present invention comprises a head pipe, a steering stem steerably supported by the head pipe, a front fork connected to the steering stem via a bridge and rotatably supporting a steering wheel at its lower end, and a front fork covering the head pipe. The present invention relates to a saddle-ride type vehicle provided with a cover.

Patent Document 1 discloses a headlight unit with a reflector incorporated in a front cover and covered with a lens forming a translucent surface. The front cover covers a bridge that supports the upper ends of the two front forks. The light-transmitting surface of the lens narrows toward the inside of the left and right ends of the bridge as it goes downward in a front view.

JP 2017-132436 A

In Patent Literature 1, the lens of the headlight unit extends greatly upwards in order to ensure a light-transmitting surface of good size. Since the front cover inclines so as to be displaced rearward as it goes upward, the headlight unit is arranged more forward than the bridge in order to avoid interference between the headlight unit and the bridge when turning. This forward bias saves volume for the headlight unit (which helps with heat management). On the other hand, the front cover swells greatly forward from the bridge. A motorcycle will appear to be large.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a saddle-ride type vehicle in which the translucent surface of the lens for the headlight is placed as far back as possible to achieve a compact appearance. do.

According to the first aspect of the present invention, a head pipe, a steering stem steerably supported by the head pipe, and a front end connected to the steering stem via a bridge and rotatably supporting a steered wheel at its lower end A straddle-type vehicle comprising a fork, a front cover that covers the head pipe, and a headlight unit that is incorporated in the front cover and has a reflector covered with a lens that forms a translucent surface of the headlight, wherein the lens is The light-transmitting surface of the headlight has a lower edge positioned outside the left and right ends of the bridge in a front view and positioned downward toward the left and right ends, and the bottom of the light-transmitting surface of the headlight The edge bulges downward at the center position in the left-right direction when viewed from the front, and has an upwardly convex apex between its left and right ends and the center position in the left-right direction. It is curved at a portion extending from any of the directional center positions to the vertex .

According to the second aspect, a head pipe, a steering stem steerably supported by the head pipe, a front fork connected to the steering stem via a bridge and rotatably supporting a steered wheel at its lower end, A straddle-type vehicle comprising: a front cover covering the head pipe; and a headlight unit incorporated in the front cover and having a reflector covered with a lens forming a translucent surface of the headlight, wherein the head of the lens The translucent surface of the light has a lower edge that is located outside the left and right ends of the bridge in a front view and is located downward toward the left and right ends, and the headlight unit supports the reflector and the lens. and a mating surface between the lower edge of the lens and the housing is formed in a wavy shape extending away from the bridge between left and right ends and a center position in the left and right direction when viewed in the axial direction of the head pipe. be done.

According to the third aspect, in addition to the configuration of the second aspect, the housing is formed with recesses that are recessed along the trajectory of the bridge.

According to the fourth aspect, in addition to the configuration of the third aspect, the light source is arranged above the reflector and emits light downward, and the reflector is inclined so as to be displaced forward as it goes downward. It is formed from a thin plate, and the reflector is positioned forward and above the recess with the rear surface of the thin plate adjacent to the recess.

According to the first aspect, since the light-transmitting surface of the lens for the headlight expands greatly in the left-right direction (vehicle width direction), a favorable size of the light-transmitting surface for the headlight is secured while suppressing upward expansion. can be As a result, the headlight unit can be arranged as far back as possible. The bulging of the front cover toward the front can be suppressed. The headlight unit can thus contribute significantly to the formation of a compact appearance.

In addition, since the central position of the headlight unit in the left-right direction is out of the trajectory of the bridge even when the steering stem is turned, the spread of the light-transmitting surface of the headlight can be increased satisfactorily.

According to the second aspect, since the lower edge of the lens and the mating surface of the housing are formed in a corrugated shape, even if the headlight unit is arranged as far back as possible, interference between the bridge and the front fork and the headlight unit is minimized. can be avoided. The headlight unit can contribute greatly to creating a compact appearance.

According to the third aspect, the headlight unit can be arranged as far back as possible due to the function of the recess. The headlight unit can thus contribute significantly to the formation of a compact appearance. Since the recess can suppress a decrease in the volume of the headlight unit as much as possible, the volume of the headlight unit can be secured. Heat dissipation is promoted by convection in the headlight unit. Good heat management can be ensured.

According to the fourth aspect, the recess of the housing can be arranged while avoiding interference with the reflector, so that a compact headlight unit can be formed while achieving a wide range of orientations.

1 is a left side view schematically showing an overall image of a straddle-type vehicle (motorcycle) according to this embodiment; FIG. 1 is an enlarged partial front view of a motorcycle; FIG. 3 is an enlarged horizontal cross-sectional view taken along line 3-3 of FIG. 2; FIG. 4 is an enlarged vertical cross-sectional view along line 4-4 of FIG. 3; FIG. 5 is an enlarged vertical cross-sectional view along line 5-5 of FIG. 3; FIG. FIG. 4 is an enlarged bottom view of the headlight unit viewed in the axial direction of the head pipe; FIG. 7 is an enlarged vertical cross-sectional view of the headlight unit corresponding to the cross-sectional view taken along line 7-7 in FIG. 6 and schematically showing the positional relationship with the bridge.

An embodiment of the present invention will be described below with reference to the accompanying drawings. In the following description, front and rear, up and down, and left and right directions refer to directions viewed from a rider on the motorcycle.

FIG. 1 schematically shows a scooter-type motorcycle according to one embodiment of a straddle-type vehicle. A motorcycle 11 includes a body frame 12 and a body cover 13 attached to the body frame 12 . The vehicle body frame 12 includes a head pipe 14, a pair of left and right main frames 15 that descend from the head pipe 14 behind the front wheels WF, bend at their lower ends and extend rearward, and are connected to rear portions of the main frames 15 to extend the width of the vehicle. and a rear frame 17 continuously rising in front of the rear wheel WR from the main frame 15, curved at its upper end, and gently extending rearwardly upward in the longitudinal direction of the vehicle. A steering stem 18 is steerably supported on the head pipe 14 . A handlebar 19 that branches in the left-right direction (vehicle width direction) is fixed to the upper end of the steering stem 18 . Two (a pair of left and right) front forks 22 are connected to the lower end of the steering stem 18 via a bridge 21 . The front fork 22 is inclined so as to be displaced forward as it goes downward, and rotatably supports a steering wheel (front wheel) WF at its lower end. The front forks 22 extend parallel to each other on both sides of the front wheel WF.

An occupant seat 23 is mounted on the body cover 13 above the rear frame 17 . The vehicle body cover 13 includes a front cover 24a covering the head pipe 14 from the front, a leg shield 24b continuing from the front cover 24a, and a leg shield 24b continuing from the lower end of the leg shield 24b and extending between the passenger seat 23 and the front wheels WF. and a floor step 24c disposed above. A driver sitting on the passenger seat 23 can put his feet on the floor step 24c.

A unit swing type power unit 25 is arranged in the space below the rear frame 17 . The power unit 25 includes a water-cooled single-cylinder engine 26 and a transmission device 27 connected to the engine 26 and the rear wheels WR to transmit the output of the engine 26 to the rear wheels WR. The axle of the rear wheel WR is supported on both sides at the rear end of the power unit 25 so as to be rotatable around the horizontal axis.

The engine 26 includes a crankcase 28 that supports a crankshaft rotatably about a rotation axis Rx extending parallel to the axle of the rear wheels WR, and a crankcase 28 that is coupled to the crankcase 28 and positioned in front of the crankcase 28 to support the crankshaft. A cylinder block 29 that guides the linear reciprocating motion of the connected pistons, a cylinder head 31 that is connected to the cylinder block 29 and defines a combustion chamber between the pistons, and a cylinder head 31 that is connected to the combustion chamber. and a head cover 32 that covers the valve mechanism that controls the intake and exhaust of the engine. The rear wheel WR is arranged behind the crankcase 28 .

The crankcase 28 is connected to the rear frame 17 so as to be rotatable around an axis parallel to the rotation axis Rx. The crankcase 28 is connected by a link 34 to a bracket 33 that is connected to the curved region of the rear frame 17 . A transmission case 27 a of the transmission device 27 is coupled to the crankcase 28 . A rear cushion unit 35 is arranged between the rear frame 17 and the power unit 25 at a distance from the link 34 and the bracket 33 . Such a power unit 25 functions as a suspension system for the rear wheels WR.

An intake device 37 and an exhaust device 38 are connected to the cylinder head 31 . The intake device 37 is supported by the transmission case 27a and includes an air cleaner 39 that sucks and purifies outside air, and a throttle body 41 as an intake system component that connects the air cleaner 39 to the cylinder head 31 . A fuel injection device 42 is attached to the upper side wall of the cylinder head 31 . The exhaust device 38 includes an exhaust pipe 43 extending rearward from the lower side wall of the cylinder head 31 through the lower side of the engine 26, and a silencer (not shown) connected to the downstream end of the exhaust pipe 43 and connected to the crankcase 28. and

As shown in FIG. 2, a headlight unit 45 is incorporated in the front cover 24a. The headlight unit 45 includes a lens 47 that covers a reflector 46, which will be described later, and forms a translucent surface 47a of the headlight . A headlight transmissive surface 47a of the lens 47 forms an appearance that is continuous with the outer surface of the front cover 24a. As shown in FIG. 1, the headlight transmissive surface 47a of the lens 47 is inclined so as to be displaced rearward as it goes downward.

As shown in FIG. 2, the lower edge of the headlight unit 45 forms the lower edge of the front cover 24a when viewed from the front. A light-transmitting surface 47a of the lens 47 for the headlight has a lower edge that is located outside the left and right ends of the bridge 21 in a front view, and that is positioned downward toward the left and right ends (at this time, the front wheels WF are not allowed to travel straight ahead). Facing the front to realize). The lower edge of the translucent surface 47a of the headlight bulges downward at the center position in the left-right direction when viewed from the front, and an apex portion 47p that protrudes upward is formed between the left-right end and the center position in the left-right direction . In this way, the lower edge of the translucent surface 47a of the headlight is formed into an "M" shape that is smoothly curved at a portion extending from either the left or right end or the center position in the left or right direction to the apex 47p when viewed from the front . Here, the two apexes 47p of the "M" shape are arranged inside the axial centers 22x of the left and right front forks 22 when viewed from the front.

As shown in FIG. 3, the headlight unit 45 comprises a housing 49 that supports a reflector 46 and is joined to the lens 47 at mating surfaces 48 . The reflector 46 has a symmetrical shape and is divided into five sections arranged in the left-right direction. These compartments, in order from left to right, include a left compartment 51a, a center left compartment 51b, a center compartment 51c, a center right compartment 51d and a right compartment 51e.

Here, the illumination of the driving beam (high beam) is realized in the central compartment 51c. As shown in FIG. 4, in the central section 51c, the reflector 46 forms a curved reflective surface 52 that displaces forward as it goes downward. In forming the reflecting surface 52, the reflector 46 is formed of a thin plate that is inclined so as to be displaced forward as it goes downward. A substrate 53 extending along the horizontal plane is supported above the reflector 46 . An LED (light emitting diode) element 54 that emits light downward toward the reflecting surface 52 is mounted on the substrate 53 .

Passing beam (low beam) illumination is realized in the left section 51a, the middle left section 51b, the middle right section 51d, and the right section 51e. As shown in FIG. 5, in the left section 51a, the middle left section 51b, the middle right section 51d, and the right section 51e, the reflector 46 forms a curved reflection surface 55 that displaces forward as it goes downward. do. In forming the reflecting surface 55, the reflector 46 is formed of a thin plate that is inclined so as to be displaced forward as it goes downward. A substrate 56 extending along the horizontal plane is supported above the reflector 46 . An LED (light emitting diode) element 57 that emits light downward toward the reflecting surface 55 is mounted on the substrate 56 . The LED element 54 in the central section 51c is extinguished during the passing beam. In the driving beam mode, the LED elements 57 are lit not only in the center section 51c but also in the left section 51a, the center left section 51b, the center right section 51d and the right section 51e.

As shown in FIG. 3, a pair of joint members 58 are attached to both left and right ends of the reflector 46 . The joint member 58 includes a shaft body 58a embedded in the reflector 46 and extending rearward from the reflector 46, and a spherical body 58b coupled to the rear end of the shaft body 58a. A ball receiving member 59 is attached to the housing 49 to individually hold the balls 58b so as to be rotatable around the center of the balls 58b. The centers of the two spheres 58b are arranged in one horizontal plane. In this way, the reflector 46 can swing vertically with respect to the housing 49 around the center of the sphere 58b.

A bolt member 61 is supported on the housing 49 behind the central section 51c of the reflector 46 so as to be rotatable about the axis. The axis of the bolt member 61 is arranged in a horizontal plane different from the horizontal plane containing the center of the sphere 58b. Relative displacement of the bolt member 61 in the axial direction is constrained. A nut member 62 is connected to the reflector 46 behind the central section 51c and engages the male thread of the bolt member 61. As shown in FIG. The nut member 62 is fixed to the reflector 46 so as not to be relatively displaceable. The nut member 62 can be displaced in the axial direction according to the rotation of the bolt member 61 . Thus, the angle of the reflector 46 can be adjusted around the center of the sphere 58b according to the rotation of the bolt member 61. FIG. The direction of the beam is set according to the angle of the reflector 46 .

As shown in FIG. 6, the lens 47 has an opaque surface 47b that is continuous from the headlight transmissive surface 47a and covered by the front cover 24a outside the headlight transmissive surface 47a. On the opaque surface 47b, the rear side of the lens 47 is colored black. A continuous receiving piece 65 is formed on the housing 49 along the outer edge 64 of the lens 47 . An outer edge 64 of the lens 47 is received by a receiving piece 65 . A mating surface 48 between the lower edge of the lens 47 and the housing 49 is thus set. A mating surface 48 between the lower edge of the lens 47 and the housing 49 is formed in a wave shape extending away from the bridge 21 between the left and right ends and the center position in the left and right direction when viewed in the axial direction of the head pipe 14 . The corrugated shape is formed so as to avoid the trajectory TR of the bridge 21 during turning, and contributes to maximally moving the headlight unit 45 rearward.

As shown in FIGS. 6 and 7, the housing 49 is formed with left and right recesses 66L and 66R recessed along the track TR of the bridge 21. As shown in FIGS. The concave portions 66L and 66R rise upward from the rear of the receiving piece 65 below the reflector 46 and spread rearward. A clearance of a predetermined size is set between the inner surfaces of the recesses 66L and 66R and the track TR of the bridge 21 . The left recessed portion 66L receives the bridge 21 while avoiding interference with the bridge 21 during right turning. The right concave portion 66R receives the bridge 21 while avoiding interference with the bridge 21 during left turning. The concave portions 66L and 66R are recessed so as to approach the rear surface of the reflector 46. As shown in FIG. A bulging portion 67 is formed in the housing 49 outside the recesses 66L and 66R in the left-right direction and bulges downward beyond the recesses 66L and 66R. The bolt member 61 is arranged between the recesses 66L and 66R.

Next, the operation of this embodiment will be described. In the headlight unit 45, the headlight transmissive surface 47a of the lens 47 has a lower edge positioned outside the left and right ends of the bridge 21 in a front view and positioned downward toward the left and right ends. Since the light-transmitting surface 47a of the lens 47 for the headlight expands greatly in the left-right direction (the vehicle width direction), the light-transmitting surface 47a for the headlight of a good size can be secured while suppressing upward expansion. can. As a result, the headlight unit 45 can be arranged as far back as possible. The bulging of the front cover 24a toward the front can be suppressed. In this way, the headlight unit 45 can greatly contribute to forming a compact appearance.

In addition, the lower edge of the light-transmitting surface 47a of the lens 47 for the headlight bulges downward at the center position in the left-right direction when viewed from the front. Since the center position of the headlight unit 45 in the left-right direction is out of the track of the bridge 21 even when the steering stem 18 is turned, the spread of the translucent surface 47a of the headlight can be increased satisfactorily.

In the headlight unit 45 according to this embodiment, the mating surface 48 between the lower edge of the lens 47 and the housing 49 moves away from the bridge 21 between the left and right ends and the center position in the left and right direction when viewed in the axial direction of the head pipe 14. It is formed in a corrugated shape. Since the lower edge of the lens 47 and the mating surface 48 of the housing 49 are formed in a corrugated shape, interference between the bridge 21 and the front forks 22 and the headlight unit 45 is minimized even if the headlight unit 45 is arranged as far back as possible. can be avoided. The headlight unit 45 can greatly contribute to forming a compact appearance.

In this embodiment, concave portions 66L and 66R are formed in the housing 49 along the track of the bridge 21 . The recesses 66L and 66R allow the headlight unit 45 to be arranged as far back as possible. In this way, the headlight unit 45 can greatly contribute to forming a compact appearance. The recesses 66L and 66R suppress reduction in volume of the headlight unit 45 as much as possible. The volume of the headlight unit 45 is ensured. Heat dissipation by convection is promoted in the headlight unit 45 . Good heat management is ensured.

The recesses 66L and 66R of the housing 49 are recessed so as to approach the rear surface of the reflector 46. As shown in FIG. That is, the reflector 46 is arranged in front of and above the recesses 66L and 66R so that the rear surface of the thin plate is close to the recesses 66L and 66R. Since the recesses 66L, 66R of the housing 49 are thus arranged while avoiding interference with the reflector 46, a compact headlight unit 45 can be formed while realizing a wide range of orientations.

In the front cover 24a according to the present embodiment, the headlight transmissive surface 47a of the lens 47 is inclined so as to be displaced rearward as it goes downward. In such a case, since the mating surface 48 between the lens 47 and the housing 49 at the lower edge of the headlight unit 45 is positioned relatively rearward, it is difficult to secure the capacity inside the headlight unit 45. It will be understood that, in this embodiment, the capacity is easily ensured by forming the mating surface 48 in an "M" shape.

In the headlight unit 45 according to the present embodiment, the two apexes 47p of the "M" shape are arranged inside the axial center 22x of the left and right front forks 22 when viewed from the front (at this time, the front wheel WF is Facing the front to achieve straight running). Therefore, even if the steering stem 18 rotates to the left and right with respect to the head pipe 14 to the maximum when turning, a clearance can be easily secured between the upper end of the front fork 22 (that is, the bridge 21) and the headlight unit 45. can be done.

In the headlight unit 45, a bulging portion 67 is formed on the housing 49 outside the concave portions 66L and 66R in the left-right direction and bulging downward beyond the concave portions 66L and 66R. The bulging portion 67 can contribute to securing the capacity of the headlight unit 45 . Heat dissipation by convection is promoted in the headlight unit 45 . Good heat management can be ensured.

DESCRIPTION OF SYMBOLS 11... Saddle type vehicle (motorcycle), 14... Head pipe, 18... Steering stem, 21... Bridge, 22... Front fork, 24a... Front cover, 45... Headlight unit, 46... Reflector, 47... Lens, 47a Light-transmitting surface of headlight 48 Mating surface 49 Housing 66L Recessed portion 66R Recessed portion WF Steering wheel (front wheel).

Claims (4)

a head pipe (14);
a steering stem (18) steerably supported on the head pipe (14);
a front fork (22) connected to the steering stem (18) via a bridge (21) and rotatably supporting a steering wheel (WF) at its lower end;
a front cover (24a) covering the head pipe (14);
A straddle-type vehicle ( 11),
The light-transmitting surface (47a) of the lens (47) for the headlight has a lower edge positioned outside the left and right ends of the bridge (21) in a front view and positioned downward toward the left and right ends. ,
The lower edge of the light-transmitting surface (47a) of the headlight bulges downward at the center position in the left-right direction in a front view, and has an upwardly convex apex between the left-right ends thereof and the center position in the left-right direction. (47p), and is curved at a portion extending from one of its left and right ends and a center position in the left and right direction to the vertex (47p) when viewed from the front. a head pipe (14);
a steering stem (18) steerably supported on the head pipe (14);
a front fork (22) connected to the steering stem (18) via a bridge (21) and rotatably supporting a steering wheel (WF) at its lower end;
a front cover (24a) covering the head pipe (14);
a headlight unit (45) having a reflector (46) incorporated in the front cover (24a) and covered with a lens (47) forming a translucent surface (47a) of the headlight;
In a straddle-type vehicle (11) comprising:
The light-transmitting surface (47a) of the lens (47) for the headlight has a lower edge positioned outside the left and right ends of the bridge (21) in a front view and positioned downward toward the left and right ends. ,
The headlight unit (45) comprises a housing (49) that supports the reflector (46) and is coupled to the lens (47). A saddle-riding type characterized in that the surface (48) is formed in a wavy shape extending away from the bridge (21) between the left and right ends and the center position in the left and right direction when viewed in the axial direction of the head pipe (14). vehicle. The straddle-type vehicle according to claim 2 , wherein the housing (49) is formed with recesses (66L, 66R) recessed along the track of the bridge (21). vehicle. The straddle-type vehicle according to claim 3 , further comprising a light source arranged above the reflector (46) for emitting light downward, the reflector (46) being displaced forward as it goes downward. A saddle-ride type vehicle, characterized in that the reflector (46) is formed from an inclined thin plate, and the reflector (46) is arranged in front of and above the recesses (66L, 66R) so that the rear surface of the thin plate is close to the recesses.

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