JP5460526B2 - Front structure of motorcycle - Google Patents

Description

  The present invention relates to an improvement in the front structure of a motorcycle in which a license plate is attached to the front of a vehicle body.

  Depending on the regulations, a license plate is attached to the front of the vehicle body. Therefore, a front structure of a motorcycle in which a license plate is attached to the front of the vehicle body has been proposed (see, for example, Patent Document 1 (FIGS. 2 and 3)).

  As shown in FIG. 3 of Patent Document 1, the head is mounted by a front stay (24) attached to the front part of the head pipe (12) (the numbers in parentheses indicate the symbols described in Patent Document 1. The same applies hereinafter). A lamp (26) is supported, and a resin housing (166) is provided outside the head lamp (26). A lower support portion (174) is integrally formed at the lower end of the housing (166). The license plate stay (28) is extended to the front of the vehicle at the portion (174), and the license plate (31) is attached to the license plate stay (28).

  As shown in FIG. 2 of Patent Document 1, a front cowl (78) is disposed on the left and right sides of the license plate stay (28) in the vehicle width direction, and the front cowl (78) lowers the license plate stay (28). The support (174) is covered. By covering the side of the license plate stay (28) with the front cowl (78), the appearance of the front portion of the vehicle can be enhanced.

By the way, in the technique of Patent Document 1, the side of the license plate stay (28) is covered with a front cowl (78). Since the license plate stay (28) is supported by the housing (166) which is a member different from the front cowl (78), the license plate stay (28) extended from the housing (166) becomes large. The front cowl that covers the license plate stay (28) is also enlarged.
A technology capable of avoiding an increase in the size of the front cowl has been desired while a reduction in the size of the vehicle is required.

Japanese Patent No. 4307874

  An object of the present invention is to provide a structure capable of avoiding an increase in size of a front cowl in a motorcycle in which a license plate is attached to a front portion of a vehicle body.

  According to a first aspect of the present invention, in a front structure of a motorcycle in which a license plate is attached to a front portion of a vehicle body, a front cowl that is attached to the vehicle body frame and surrounds a headlight disposed in front of the vehicle body frame, and the front cowl And a license plate stay that is attached to the bottom surface of the vehicle so as not to be partially visible in a side view of the vehicle and supports the license plate.

  The invention according to claim 2 is characterized in that a storage recess for storing the license plate stay is provided on the bottom surface of the front cowl.

  The invention according to claim 3 is characterized in that the lower surface of the front cowl and the lower surface of the license plate stay are substantially flush with each other.

  The invention according to claim 4 is characterized in that a license plate stay is applied to the bottom surface of the front cowl from below, a fastening member is inserted downward from above the front cowl, and the license plate stay is fastened to the front cowl with this fastening member. And

  The invention according to claim 5 is characterized in that the license plate stay is molded of resin.

  In the invention according to claim 6, the headlight includes a lens that is curved so that the lower portion of the lens is retracted rearward of the vehicle in a side view of the vehicle, and the lower front surface of the front cowl hits the lower rear surface of such a lens. At the same time, the license plate is disposed in a space extending downward from the lens and in front of the lower front surface of the front cowl and in the space below the lens behind the front end of the lens and behind the vehicle.

  In the invention according to claim 1, the license plate stay is attached to the bottom surface of the front cowl so that a part of the license plate stay cannot be seen by the front cowl. Since the license plate stay is partially covered by the front cowl in a side view of the vehicle, the license plate stay can be made inconspicuous. Therefore, the appearance around the front cowl can be improved.

The license plate stay is attached to the bottom surface of the front cowl.
If the license plate stay is attached to the headlight, in order to improve the appearance around the headlight without making the license plate stay inconspicuous, use the front cowl around the license plate stay mounting area. It is necessary to cover. Covering the periphery of the license plate stay mounting portion with the front cowl may increase the size of the front cowl.

In this regard, in the present invention, the license plate stay is attached to the bottom surface of the front cowl. Since a part of the license plate stay is covered with the front cowl which is an attachment member, an increase in the size of the front cowl is avoided.
Therefore, in a motorcycle in which the license plate is attached to the front part of the vehicle body, a good appearance around the front cowl is maintained, and an increase in the size of the front cowl is avoided.

  In the invention which concerns on Claim 2, the accommodation recessed part is provided in the bottom face of the front cowl. Since the license plate stay is stored in the storage recess, the license plate stay can be made more difficult to see when viewed from the side of the vehicle. Therefore, the appearance around the front cowl can be further enhanced.

  In the invention according to claim 3, the lower surface of the front cowl and the lower surface of the license plate stay are substantially flush. Since the lower surface of the license plate stay is aligned with the lower surface of the front cowl, the license plate stay is less noticeable.

  In the invention according to claim 4, the license plate stay is applied to the bottom surface of the front cowl from below, and the fastening member is inserted and fastened downward from above the front cowl. Since the fastening member is inserted from above and the head of the fastening member is not exposed, there is no concern that the appearance around the front cowl is impaired. In addition, since the fastening operation can be performed from above, the workability related to the fastening can be improved as compared with the case where the fastening operation is performed from below.

  In the invention according to claim 5, the license plate stay is molded of resin. A resin license plate stay can be reduced in weight. In addition, if it is a resin molded product, it is possible to easily form a shape that can be fitted into a storage recess provided on the bottom surface of the front cowl.

  In the invention according to claim 6, the license plate is disposed in a space extending downward from the lens and in front of the lower front surface of the front cowl and in the space below the lens behind the front end of the lens and behind the vehicle.

  Since the license plate is disposed in the space behind the lens from the front end of the lens and below the lens, the length of the license plate stay can be shortened compared to the case where the license plate is disposed in front of the vehicle from the front end of the lens. In addition, since the license plate is disposed in the space in front of the lower front surface of the front cowl, the license plate can be disposed at a position where it can be easily seen.

1 is a left side view of a motorcycle according to the present invention. Fig. 2 is a left side view of a main part of the motorcycle. Fig. 2 is a front view of a main part of the motorcycle. It is a disassembled perspective view explaining attaching a license plate stay to a front cowl. FIG. 5 is a view taken in the direction of arrow 5 in FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 5. It is a top view of a license plate stay. FIG. It is a perspective view explaining the attachment structure to the body frame side of a cover stay. It is a disassembled perspective view explaining the attachment structure of a front cowl. It is a side view explaining the attachment structure of a headlight.

  Hereinafter, embodiments of the present invention will be described in detail. In the drawings and examples, “up”, “down”, “front”, “rear”, “left”, and “right” respectively indicate directions viewed from the driver who rides the motorcycle. The drawings are viewed in the direction of the reference numerals.

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the motorcycle 10 includes a head pipe 11, a main frame 12 extending from the head pipe 11 to the rear of the vehicle, a down frame 13 extending from the head pipe 11 to the rear of the vehicle, A pair of left and right pivot frames 15L and 15R extending downward from the lower end of the main frame 12 (only the reference numeral 15L on the front side of the figure is shown), and a pair of left and right seat rails 16L and 16R extending from the rear of the main frame 12 to the rear of the vehicle. (Only the reference numeral 16L on the front side of the figure is shown), and a pair of left and right seat rails 16L and 16R respectively passed between an intermediate portion of the pair of left and right seat rails 16L and 16R and a pair of left and right pivot frames 15L and 15R. A pair of left and right support stays 17L and 17R (only the reference numeral 17L on the front side is shown) )) And a front wheel steering system 24 including a front wheel 21 on the head pipe 11, a front fork 22 for supporting the front wheel 21, and a steering handle 23 attached to the upper end of the front fork 22. The engine 25 is suspended from the down frame 13 and the pivot frames 15L and 15R, and the swing arm 27 is extended from the pivot frames 15L and 15R to the rear of the vehicle via the pivot shaft 26. A rear wheel 29 to which the driving force of the engine 25 is transmitted via the chain 28 is provided at the end, and a fuel tank 31 is placed on the main frame 12 at the vehicle rear position of the head pipe 11. This is a vehicle in which an occupant seat 32 is placed on a pair of seat rails 16L, 16R.

Next, the structure of the vehicle front part will be described.
A front cowl 36 is disposed in front of the front fork 22, a headlight 37 is provided on the front cowl 36, and a license plate stay 39 on which a license plate 38 is attached to the front cowl 36 at a position below the headlight 37. Is provided. A wind screen 41 extends from the front cowl 36 to the upper rear of the vehicle. From left and right side surfaces of the front cowl 36, left and right front blinkers 42L and 42R (only the reference sign 42L on the front side in the figure is shown) are extended outward in the vehicle width direction.
A front fender 45 is attached to the front fork 22 at a position above the front wheel 21.

Next, the structure of the rear part of the vehicle will be described.
A pair of left and right side cowls 47L and 47R (only the reference numeral 47L on the front side of the figure is shown) extend from the rear of the fuel tank 31 to the rear of the vehicle at a position below the occupant seat 32, and the pair of left and right side cowls 47L and 47R. Only a pair of left and right rear cowls 48L and 48R on the front side of the figure 48L are shown rearward of the vehicle. ) Are each extended. Also, a pair of left and right center cowls 49L and 49R (only the reference numeral 49L on the front side of the drawing is shown) extends downward along the pivot frames 15L and 15R below the pair of left and right side cowls 47L and 47R. .

  A rear fender 46 is disposed below the rear wheels 29 below the pair of left and right rear cowls 48L and 48R. 52 is arranged.

Next, the structure around the front cowl as the front structure of the motorcycle will be described. As shown in FIG. 2, a headlamp 37 (hereinafter referred to as “headlight 37”) is provided at the front of the front cowl 36. The license plate stay 39 extends from the bottom 54 of the front cowl to the front of the vehicle, and the license plate 38 is attached to the end of the license plate stay 39.

  That is, in the front structure of the motorcycle, a headlight 37 is disposed in front of the body frame 20, and a front cowl 36 surrounding the headlight 37 is provided. A license plate stay 39 that supports the license plate 38 is attached to the front of the vehicle body.

  The license plate stay 39 is attached to the bottom surface 54 of the front cowl so that a part (rear part) of the license plate stay 39 cannot be seen in a side view of the vehicle. Further, the lower surface 55 of the front cowl and the lower surface 56 of the license plate stay are arranged so as to be substantially flush with each other.

Next, the positional relationship between the license plate and the headlight will be described.
The headlight 37 includes a lens 61 that is curved so that the lower portion of the lens 61 is retracted rearward of the vehicle in a side view of the vehicle, and the lower front surface 63 of the front cowl hits the lower rear surface 62 of such a lens. A license plate 38 is disposed in a space extending downward from 61 and in front of the lower front surface 63 of the front cowl and in the space below the lens behind the lens tip 64 and behind the vehicle.

  As shown in FIG. 3, an opening 65 is opened in the front surface of the front cowl 36, a headlight 37 is provided in the opening 65, and the upper edge of the front cowl 36 is positioned above the headlight 37. A wind screen 41 is attached. The wind screen 41 is extended upward.

4 to 7, the license plate stay mounting structure will be described.
As shown in FIG. 4, the license plate stay 39 is applied from the bottom to the bottom surface 54 of the front cowl, and two fastening members 67 are inserted downward from the top of the front cowl 36. The license plate stay 39 was concluded at 36.

  As shown in FIG. 5, when the storage recess 71 is viewed obliquely from the front front of the vehicle with the headlight (FIG. 3, reference numeral 37) removed from the front cowl 36, the license plate A stay 39 is accommodated. The license plate stay 39 is fastened by fastening members 67 and 67 from above.

As shown in FIG. 6, a storage recess 71 that opens downward and is recessed upward and that stores the license plate stay 39 is provided in the lower portion of the front cowl 36.
Referring also to FIG. 5, the storage recess 71 includes a bottom surface 73 with which the arm portion upper surface 72 of the license plate stay 39 abuts, and left and right side walls 74 </ b> L extending downward at an outer position in the vehicle width direction of the bottom surface 73. 74R, a rear wall 75 provided on the vehicle rear side of the left and right side walls 74L, 74R, and a convex portion 76 formed at the center position in the vehicle width direction and formed below. A long hole 77 is formed in the convex portion 76 so that a screw (FIG. 12, reference numeral 111) for fastening the lower portion of the headlight 37 is inserted and fastened so that the headlight 37 can swing back and forth. .

  As shown in FIG. 7, a fastening hole 81 through which the fastening member 67 passes through the bottom surface 73, and a middle claw engaging with a middle claw 82, which will be described later, provided on the vehicle front side of the fastening hole 81. A mating hole 84 and a rear claw engagement hole 85 provided in a rear wall 75 located on the vehicle rear side of the fastening hole 81 and engaged with a rear claw 83 of a license plate stay described later are formed.

  The license plate stay 39 is inserted in the rear of the vehicle along the bottom surface 73 to engage the middle claw 82 with the middle claw engagement hole 84 and engage the rear claw 83 with the rear claw engagement hole 85. The fastening member 67 was inserted from above, and the license plate stay 39 was fastened to the front cowl 36. That is, the license plate support portion 92 that constitutes the front portion of the license plate stay 39 is fastened by the fastening screw 94 where the license plate stay 39 is disposed.

Next, the structure of the license plate stay will be described with reference to FIGS.
As shown in FIG. 8, when viewed from above, the license plate stay 39 has left and right arm portions 91L and 91R extending forward of the vehicle and the ends of these left and right arm portions 91L and 91R. The license plate support portion 92 extends in the vehicle width direction. The license plate stay 39 is integrally formed of resin.

  Left and right middle claws 82 and 82 are formed at the middle portions in the front-rear direction of the left and right arm portions 91L and 91R, respectively. In addition, left and right rear claws 83, 83 extending rearward of the vehicle are formed at the rear end portions in the front-rear direction of the left and right arm portions 91L, 91R, respectively.

  The license plate support portion 92 is provided with fastening holes 81 and 81 for fastening the license plate stay 39 to the front cowl (reference numeral 36 in FIG. 7). The fastening holes 81, 81 are opened at the vehicle rear side and the vehicle width direction outer position of the left and right middle claws 82, 82.

  Ribs 96 are formed along the edges of the license plate stay 39 made of resin. The rib 96 can further reduce the weight of the license plate stay 39 while increasing the rigidity of the license plate stay 39. In addition, if it is a resin molded product, a shape that can be fitted into the storage recess 71 can be easily formed.

As shown in FIG. 9, fastening bosses 97, 97 are provided around the fastening hole 81 in the left and right arm portions 91 </ b> L, 91 </ b> R, and fastening members (FIG. 6, reference numeral 67, 67) can be concluded.
Referring also to FIG. 8, a rib 96 is formed on the edge of the arm portion 91. The axial height of the fastening member 67 of the rib 96 and the axial height of the fastening member 67 of the fastening boss 97 are substantially the same height. The fastening boss 97 is provided because the fastening boss lower surface 97b and the rib lower surface 96b are substantially the same in the direction perpendicular to the axis of the fastening member 67 and the vehicle side view, and the fastening boss 97 hardly protrudes from the rib 96. Nevertheless, there is no concern that the appearance of the license plate stay 39 will be impaired.

Hereinafter, the front cowl and the headlight mounting structure will be described with reference to FIGS.
As shown in FIG. 10, the front wheel steering system 24 is rotatably provided on the head pipe 11 and supports the front fork 22 up and down when the vehicle obliquely rearward and upward is viewed from the vehicle obliquely forward and downward. A top bridge 101 and a bottom bridge 102 are provided. Cover stays 103 that support the front cowl 36 are fastened to the top bridge 101 and the bottom bridge 102 by four fastening bolts 104, respectively.

  As shown in FIG. 11, four fastening holes 116 for fastening the cover stay 103 to the front wheel steering system (FIG. 10, reference numeral 24) are formed in the cover stay 103. Four cowl fastening holes 117 are formed in the cover stay 103 outside the fastening holes 116 in the vehicle width direction, and a front cowl 36 is set from the front side of the vehicle at a position that matches the cowl fastening holes 117. The front cowl 36 is fastened to the cover stay 103 with the cowl bolt 105.

  A wind screen 41 is disposed on the front cowl 36, and the wind screen 41 is fastened to the front cowl 36 via a plurality of screen fastening bolts 106.

  As shown in FIG. 12, the headlight 37 includes a lens 61 and a case portion 113 that supports the lens 61 from the rear of the vehicle. The supported portions 114L and 114R (only the reference numeral 114L on the front side of the figure is shown) and the lower supported portion 115 are provided on the upper and lower portions of the case portion 113, respectively.

  Support portions 108L and 108R (only the reference numeral 108L on the front side of the figure) for supporting the supported portions 114L and 114R of the headlight 37 so as to swing back and forth are provided on the upper back surface 107 of the front cowl 36. A screw 111 that is inserted into a long hole (see reference numeral 77 in FIG. 10) and fixes the lower support portion 115 of the headlight 37 to the front cowl 36 at a predetermined aiming position is fastened to the lower end of the head.

The operation of the saddle-ride type vehicle described above will be described next.
Returning to FIG. 2, since the license plate stay 39 is attached to the bottom surface 54 of the front cowl so that a part of the license plate stay 39 is hidden by the front cowl 36, the license plate stay 39 can be made inconspicuous. The appearance around the cowl can be improved.

The license plate stay 39 is attached to the bottom surface 54 of the front cowl.
If the license plate stay is attached to the headlight, in order to improve the appearance around the headlight without making the license plate stay inconspicuous, use the front cowl around the license plate stay mounting area. cover. This may increase the front cowl.

In this regard, in the present invention, the license plate stay 39 is attached to the bottom surface 54 of the front cowl. Since a part of the license plate stay 39 is covered with the front cowl 36 which is an attachment member, an increase in the size of the front cowl 36 is avoided.
Therefore, according to the present invention, a good appearance around the front cowl is maintained, and an increase in the size of the front cowl 36 is avoided.

  The lower surface 55 of the front cowl and the lower surface 56 of the license plate stay are substantially flush. If substantially flat, the license plate stay 39 cannot be seen from the lower surface 55 of the front cowl, and the license plate stay 39 can be made less noticeable.

  Since the license plate stay 39 is stored in the storage recess 71, the license plate stay 39 can be made more difficult to see when viewed from the side of the vehicle. Therefore, the appearance around the front cowl can be further enhanced.

  Further, since the license plate 38 is disposed in the space below the lens behind the front end portion 64 of the lens, the length of the license plate stay 39 that supports the license plate 38 can be shortened. In addition, since the license plate 38 is disposed in a space before the lower front surface 63 of the front cowl, the license plate 38 can be disposed at a position where it can be easily seen.

  5-7, the license plate stay 39 was applied from the bottom to the bottom surface 54 of the front cowl, and the fastening members 67, 67 were inserted and fastened downward from the top of the front cowl 36. Since the fastening members 67 and 67 are inserted from above, there is no concern that the heads of the fastening members 67 and 67 are exposed, and there is no concern that the appearance around the front cowl is impaired. In addition, since the fastening operation can be performed from above, the workability related to the fastening can be improved as compared with the case where the fastening operation is performed from below.

  Although the present invention is applied to a motorcycle in the embodiment, it can also be applied to a tricycle and can be applied to a general vehicle.

  The present invention is suitable for a motorcycle in which a license plate stay is attached to the front of the vehicle body.

  DESCRIPTION OF SYMBOLS 10 ... Motorcycle, 20 ... Body frame, 36 ... Front cowl, 37 ... Headlight, 38 ... License plate, 39 ... License plate stay, 54 ... Bottom of front cowl, 55 ... Bottom of front cowl, 56 ... License plate stay , 61... Lens, 62... Lower rear surface of lens, 63.

Claims (6)

In the front structure of a motorcycle in which a license plate (38) is attached to the front of the vehicle body,
A front cowl (36) that is attached to the body frame (20) and is disposed in front of the body frame (20) and surrounds the headlight (37), and a part of the bottom surface of the front cowl (36) in a side view of the vehicle. A motorcycle front structure, comprising: a license plate stay (39) that is mounted so as to be invisible and supports the license plate (38).   The front structure of a motorcycle according to claim 1, wherein a storage recess (71) for storing the license plate stay (39) is provided on a bottom surface (54) of the front cowl.   The motorcycle front structure according to claim 1 or 2, wherein a lower surface (55) of the front cowl and a lower surface (56) of the license plate stay are substantially flush with each other.   The license plate stay (39) is applied from below to the bottom surface (54) of the front cowl, and a fastening member (67) is inserted downward from the top of the front cowl (36). The front structure of a motorcycle according to any one of claims 1 to 3, wherein the license plate stay (39) is fastened to a cowl (36).   The motorcycle front structure according to any one of claims 1 to 4, wherein the license plate stay (39) is formed of resin.   The headlight (37) includes a lens (61) that is curved so that a lower portion of the lens (61) is retracted rearward of the vehicle in a side view of the vehicle. The lower front surface (63) of the cowl abuts, extends downward from the lens (61), and is disposed in front of the lower front surface (63) of the front cowl and behind the front end of the lens (61). The front structure of a motorcycle according to any one of claims 1 to 5, wherein the license plate (38) is disposed in a lower space.

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