JP3379713B2 - Scooter type vehicle - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter-type vehicle in which a lower portion of a driving seat is covered with a rear cover. 2. Description of the Related Art In a scooter in which a lower portion of an operation seat is covered with a rear cover, various types of power units, such as a fuel tank, a luggage box, and electrical components, are integrally formed in the rear cover with an engine and a rear wheel. Parts are housed. [0003] In particular, since it is necessary to avoid high temperature atmosphere, water, and impact for electrical components, conventionally, when electrical components are housed in the rear cover, the engine may be trapped in a high temperature or at a high temperature. The location was decided so as to avoid places where muddy water and pebbles could easily hit. For example, it is arranged at a position close to the lower surface of the operation seat. In addition, when these electric components cannot be arranged in a preferable place due to various design restrictions, a heat insulating plate or a baffle plate is attached to protect the electric components from heat, muddy water, pebbles and the like. [0004] There has been a problem that the degree of freedom in arranging electrical components is limited. In addition, there is a problem that traveling wind is hardly applied to the electric components during traveling and cooling performance during traveling is poor. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an object to increase the degree of freedom in arranging electrical components housed in a rear cover and to improve cooling of electrical components during traveling. It is an object of the present invention to provide a scooter-type vehicle capable of performing the following. According to the present invention, an object of the present invention is to provide a footrest that is open to the side of the vehicle body below a steering handlebar and a driver's seat, and that the footrest is located below the driver's seat. in the scooter type vehicle covered with a rear cover continuous with, the
A system that is located below the driver's seat and protrudes almost horizontally forward
A power unit with an exhaust pipe connected to the
A knit; an auxiliary footrest extending rearward from a rear portion of the footrest along a lower portion of both side surfaces of the rear cover; and a side face of the rear cover extending longitudinally along an upper surface of the auxiliary footrest.
To the inside of the vehicle body to reduce the gap with the power unit.
A recess that fence, a long vent in the front-rear guiding outside air is formed in the recess in the rear cover, the recesses and vent
The present invention is achieved by a scooter-type vehicle including a bulging portion that bulges to the outside of the vehicle body above the hole , and an electrical component disposed inside the bulging portion. FIG. 1 is a left side view of a rear portion of a two-wheel scooter according to an embodiment of the present invention, FIG. 2 is a right side view of the same near the rear of the vehicle body, and FIG. FIG. 4 is a front view, and FIG.
FIG. 4 is a sectional view taken along line IV-IV in FIG. In FIG. 1, reference numeral 10 denotes a frame.
The steering tube 12 includes a main tube 14 extending obliquely downward and rearward therefrom, and a pair of right and left side tubes 16 extending from the steering shaft tube 12 obliquely upward and backward through the side of the main tube 14. The rear end of the main tube 14 is provided by a cross tube 18 on the left and right side tubes 16,
16. Above the front of the cross tube 18, there is formed a footrest space that opens to the side of the vehicle body. A is a footrest located below this footrest space. The side tubes 16, 16 extend obliquely rearward from the lower part of the footrest space toward the rear lower part of the driving seat 58, and once narrower at the rear. The rear end is a bracket 2 as shown in FIG.
Linked by 0. The frame 10 also has a pair of left and right sub-tubes 22, which rise obliquely rearward from the cross tube 18 and become substantially horizontal and are connected to the side tubes 16, 16. These two sub tubes 2
The two intermediate portions are connected to each other by a cross bracket 24. [0010] Cushion support brackets 26, 26 are fixed to the side tubes 16, 16 near the opposite side of the sub-tube 22, respectively.
6 are connected to each other by a cross tube 28.
The tube 28 penetrates both brackets 26 and 26 and opens to the side of the vehicle body. Also side tube 1
6, 16 and the cross tube 28
0 is fixed. Reference numeral 32 denotes a unit swing type power unit, which is a forced air-cooled four-cycle single-cylinder engine 34, a transmission case 36 extending rearward from the left side of the crankcase of the engine 34, and held at the rear of the transmission case 36. And a rear wheel 38. An air cleaner 40 is attached to the upper surface of the transmission case 36, and intake air is sucked into the engine 34 from above through the carburetor 42 from the air cleaner 40. The cylinder of the engine 34 projects substantially horizontally forward, and the exhaust gas is guided from the engine 34 to an exhaust muffler 46 extending to the right side of the rear wheel 38 through an exhaust pipe 44 connected to the lower surface of the cylinder. The air cleaner 40 and the exhaust muffler 46 constitute a part of the power unit 32. A bracket 48 extending downward from the cylinder is fixed to the power unit 32.
The front end of 8 is connected to the side tube 16 via a link 50. The rear end of the transmission case 36 is supported by the cushion support bracket 26 via the cylindrical cushion unit 52. In FIG. 1, reference numeral 54 denotes a large luggage box capable of storing a helmet, which is made of synthetic resin.
This luggage box 54 is substantially pan-shaped with a large opening at the top,
The front bottom portion is fixed to the cross bracket 24, and the left and right opening edges of the rear portion are fixed to a bracket 56 (only one is shown) fixed to the side tube 16. Reference numeral 58 denotes an operation seat which is long in the front and rear directions, and also serves as a lid for opening and closing the luggage box 54. That is, the front end of the operation seat 58 is connected to the luggage box 54 by the hinge 60.
And a rear portion thereof can be locked to the frame 10, that is, the bracket 20 by a seat lock device. The seat lock device includes a seat lock body 62 fixed to the bracket 20, a seat lock cylinder 66 attached to a lower surface of the standing handle 64, and a connecting portion (not shown) for interlocking the two. Here, the standing handle 64 is used for lifting the vehicle body by hooking a finger on a lower edge thereof when the main stand 70 (FIG. 1) is hung or the like, and comprises side tubes 16, 16 and a bracket. 20
Fixed to. The handle 64 is formed in an approximately U-shape in plan view by casting an aluminum alloy or the like so as to surround the left, right, and rear lower edges of the rear portion of the operation seat 58. At least the left and right sides of this handle 64 are vertically wide, and the key insertion hole 72 and the fuel supply hole 7
4 is open. An oil supply hole 74 provided in the standing handle 64 is open behind and adjacent to the key insertion hole 72. The fuel supply hole 74 faces the tubular fuel supply port 80 of the fuel tank 78. Here, the fuel tank 78 is formed by joining a pair of upper and lower halves with a flange portion 78a, and the flange portion 78a is mounted on the rear subframe 30 from behind and fixed thereto. At the rear of the standing handle 64,
A carrier support 84 extending rearward is formed integrally.
A resin carrier plate is fixed to the upper surface. A grab bar 88 is attached to the rear upper surface of the standing handle 64 so as to cross over the loading plate. In FIGS. 1 and 2, reference numeral 90 denotes a tail light unit, and reference numeral 92 denotes a license plate mounting plate, which are mounted on the rear subframe 30. A recess 78b (see FIG. 1) into which the brake lamp socket of the tail light unit 90 enters from the rear is formed in the lower part of the rear surface of the fuel tank 78. In this manner, by expanding the lower left and right sides of the fuel tank 78 to the side of the brake lamp of the tail light unit 90, the capacity of the fuel tank 78 can be increased. Reference numeral 94 denotes a rear cover, which is a driving seat 58.
And the front part thereof is continuous with the footrest A. A portion of the upper portion of the rear cover 94 along the lower edge of the standing handle 64 retreats inward of the vehicle body from the lower edge of the handle 64 so that a finger can be inserted. On the left and right side surfaces of the rear cover 94, a pair of left and right auxiliary foot rests 96, 96 extending obliquely upward and rearward continuously to the rear of the foot rest A (FIG. 1) are formed. The side tubes 16, 16 support the auxiliary footrests 96, 96 from below (see FIG. 5). Since the engine 34 of this embodiment is provided with a secondary air introduction device for purifying exhaust gas, the secondary air introduction device will be described next. In FIG. 2, reference numeral 100 denotes a control unit, which incorporates a diaphragm type air pump. The control unit 100 is mounted on the front upper surface of the exhaust muffler 46. To this control unit 100, an intake negative pressure is guided by a hose 102 from an intake pipe of the engine 34. Air is led to the control unit 100 by a flexible hose 106 from an air cleaner 104 mounted on the exhaust muffler 46 side of the rear subframe 30. The control unit 100 sucks air from the air cleaner 104 through a hose 106 by a diaphragm pump driven by intake pulsation, and supplies the air into an exhaust passage through an air nozzle 110 by a hose 108. A hose 112 is connected to the air cleaner 104.
The other end of the hose 112 is inserted into the cross tube 28 connecting the cushion support brackets 26 from the exhaust muffler 46 side. For this reason, the intake sound of the air absorbed by the air cleaner 104 can be reduced. Therefore, the control unit 100 is controlled by the intake pulsation.
When the diaphragm pump is operated, the outside air enters the cross tube 28 through the opening of the cross tube 28 on the transmission case 36 side, and the air cleaner 10 is
Inhaled to 4. Then, it is further sucked into the control unit 100 by the hose 106. This control unit 100
Is discharged to the air nozzle 110 by the hose 108, and supplied from the nozzle 110 to the exhaust as secondary air. As a result, the combustion of the unburned gas in the exhaust gas (secondary combustion) is promoted, the discharge of the unburned gas is prevented, and the exhaust gas can be purified. In particular, when a catalyst is used for purifying exhaust gas, deterioration of the catalyst due to unburned gas can be prevented, and the catalytic action can be sufficiently exhibited. On the left and right side surfaces of the rear cover 94, long recesses 114 (only one is shown) are formed in the front-rear direction along the upper surfaces of the auxiliary footrests 96, 96.
A bulging portion 116 (only one is shown) bulging outward of the vehicle body is formed above (see FIGS. 3 and 4). Further, an appropriate number of ventilation holes 118 long in the front-rear direction are formed in the recess 114. The sub tube 22 is provided inside the bulging portion 116.
, Where an ignition coil 120 as an electrical component is mounted so that at least a part thereof enters the bulging portion 116 (FIG. 4). A CDI unit 122 is attached to the rear part of the sub tube 22. As described above, since the side surface of the rear cover 94 is depressed inside the vehicle body above the auxiliary footrest 96 to form the concave portion 114, the gap between the concave portion 114 and the power unit 32 is reduced. This makes it difficult for high-temperature air around the exhaust pipe 44 to enter the rear cover 94. Also from being formed vents 118 in the recess 114, the passage
Cool outside air enters the rear cover 94 from the pores 118. For this reason, it becomes difficult for hot air around the exhaust pipe 44 to hit the ignition coil 120 which is an electrical component located above the recess 114. Further, since a part of the ignition coil 120 is in the bulging portion 116, muddy water, pebbles, and the like that the rear wheel 38 jumps up hardly hit the ignition coil 120. Since the concave portion 114 is formed here along the upper surface of the auxiliary footrest 96, a wide lateral width of the auxiliary footrest 96 can be secured. According to the present invention, as described above, the rear cover (9
Since the long concave portion (114) is formed longitudinally along the upper surface of the auxiliary footrest (96) provided on the side surface of 4), the gap between the concave portion (114) and the power unit (32) is narrowed. For this reason, the high-temperature air near the exhaust pipe is blocked by the rear cover (9).
4) It is difficult to enter inside, and it is possible to protect the electrical components housed in the rear cover from heat. The recess (114) has a ventilation hole (11).
8), the outside cold air and running wind can easily enter the rear cover (94), and the recesses (114) and
The cooling performance of the electrical component (120) disposed inside the bulge (116) located above the ventilation hole (118) is improved. Further, muddy water and pebbles that the rear wheel (38) jumps up are rebounded by the concave portion (114), and are hard to hit the electric component (120).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a left side view showing a scooter to which one embodiment of the present invention is applied. FIG. 2 is a right side view. FIG. 3 is a front view showing the vicinity of a right footrest. Cross-sectional view taken along the line IV-IV in FIG. 2 [Description of symbols] 32 Power unit 34 Engine 38 Rear wheel 44 Exhaust pipe 58 Operating seat 94 Rear cover 96 Auxiliary footrest 114 Recessed part 116 Swelling part 118 Vent hole 120 Ignition coil as electrical equipment A Footrest

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62J 11/00 B62J 23/00 B62J 39/00 B62K 11/10

Claims (1)

(57) [Claim 1] A footrest that opens to the side of the vehicle body is provided below the steering handlebar and the driver's seat, and the lower part of the driver's seat is connected to the footrest. in the scooter type vehicle covered by the rear cover, Ho located below the driver's seat
Connects to a cylinder that projects horizontally forward and its lower surface
A power unit having an exhaust pipe, an auxiliary footrest extending rearward from a rear portion of the footrest along a lower portion of both sides of the rear cover, and a side face of the rear cover extending back and forth along an upper surface of the auxiliary footrest. Depressed long inside the car body
A concave portion having a reduced gap with the power unit, a vent formed in the concave portion and extending long before and after leading the outside air into the rear cover, and a bulging portion bulging out of the vehicle body above the concave portion and the vent. A scooter-type vehicle comprising: electrical components disposed inside the bulging portion.