JP3652625B2 - Scooter type vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scooter type vehicle.
[0002]
[Prior art]
Conventionally, a swing type power unit in which a transmission mechanism for transmitting the output of the engine to a rear wheel is housed in a transmission case connected to one side of the engine body of the internal combustion engine, and the rear wheel is cantilevered at the rear end portion. A scooter type vehicle is provided with a step floor for occupant footing between the front and rear wheels and a seat for occupant sitting above the power unit, for example, Japanese Patent Laid-Open No. Sho 62-155180. Is known.
[0003]
[Problems to be solved by the invention]
Incidentally, in the conventional vehicle, covering the space and the sheet downward over the power unit at the rear body cover, since the disposed relatively large article storage portion in the rear body cover, the space within the rear body cover However, there are many restrictions in using as a space for installing various functional parts mounted on the vehicle body, and it is difficult to arrange the functional parts.
[0004]
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a scooter type vehicle that can solve the above problems.
[0005]
[Means for Solving the Problems]
To achieve the above object, a first aspect of the present invention, a drive source, a transmission case which is provided continuously on one side of the driving source, the rear wheel output is housed the drive source in the transmission case The front end of a swing-type power unit that includes a transmission mechanism that supports the rear wheel at the rear end is pivotally supported on the body frame so that it can swing up and down , and a seat for occupant seating is disposed above the power unit. In a scooter type vehicle in which the space above the power unit and below the seat is covered with a rear body cover, and an article storage portion is disposed in the rear body cover, what is the transmission case of the power unit with a rear wheel in between? opposite, to the position where it does not interfere with the oscillation of said power unit, a box-shaped cover an area over the side surfaces and the rear wheels of the suspended continuously from the lower edge of said rear body cover in a side view the driving source Characterized in that deploying vehicle component.
[0006]
The invention of claim 2, in addition to the feature of the invention of claim 1, component mount the vehicle, characterized in that attached to the stay which is supported by the body frame in the rear body cover.
[0007]
The invention of claim 3 is characterized in that, in addition to the feature of the invention of claim 1 or 2, the vehicle is an electric vehicle having the drive source as an electric motor.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below based on the embodiments of the present invention illustrated in the accompanying drawings.
[0009]
1 to 8 show a first embodiment of the present invention. FIG. 1 is an overall side view of a scooter type vehicle, FIG. 2 is a sectional view taken along line 2-2 of FIG. Is a circuit diagram showing a motor control system, FIG. 4 is a longitudinal sectional view of an accelerator grip showing the structure of a potentiometer, FIG. 5 is a sectional view taken along line 5-5 in FIG. 4, and FIG. 6 is a sectional view taken along line 6-6 in FIG. 7 is a right side view of the vehicle body showing the storage portion, and FIG. 8 is a sectional view taken along line 8-8 of FIG. FIGS. 9 to 10 show a second embodiment of the present invention. FIG. 9 is a right side view of the vehicle body showing the storage portion, and FIG. 10 is a sectional view taken along line 10-10 in FIG.
[0010]
First, the first embodiment will be described. FIG. 1 is an overall side view of a scooter type vehicle V, and its body frame F is composed of a front frame F ₁ , a center frame F ₂ , and a rear frame F ₃ made of steel pipe, and the outer side thereof is a leg shield B _1. , step floor B _2, are covered by the body B made of composed of synthetic resin from the rear body cover B _3, and under cover B _4. A head pipe 1 fixed to the front frame F ₁ is pivotally supported by a front fork 4 having a steering handle 2 at the upper end and a front wheel Wf pivoted through a front cushion 3 at the lower end. At the rear of the center frame F ₂ , the front end of a swing-type power unit P as a rear fork with a rear wheel Wr mounted in a cantilever manner at the rear end is pivotally supported by a pivot 5 so that the power unit P can swing up and down. The rear upper surface and the rear frame F ₃ are connected via a rear cushion 6. The stand 7 provided in the center frame F ₂ covers the lower surface of the front portion of the power unit P at the illustrated storage position, and also serves as a protective member for a driving motor (described later) housed therein.
[0011]
On the upper part of the power unit P, there is provided a storage portion 9 as an article storage portion that is opened and closed by a seat 8 that is supported on the vehicle body so as to be swingable up and down. The storage portion 9 is formed of a material that shields magnetism, such as a conductive resin, so that stored items such as floppy disks are not affected by the magnetism generated by the motor. The central frame F ₂ is provided with a battery box 10 that houses a battery as a power source for driving the motor. Further, a controller 11 that controls driving of the motor and a charger 12 for charging the battery are provided in front of the head pipe 1. The controller can be provided at the position 11 ₁ or 11 ₂ indicated by a chain line at the rear of the vehicle body, and the charger is also positioned at the position 12 _{1 at} the rear of the vehicle body or the position 12 _{2 at} the center of the vehicle body. Can be provided.
[0012]
Next, the structure of the power unit P will be described in detail with reference to FIG. The power unit P is provided with a transmission case 13 through which the pivot 5 penetrates left and right at the front end, and a motor M provided at the front part and a reduction gear 14 provided at the rear part are connected via a belt type continuously variable transmission 15. The
[0013]
The motor M is housed in a motor housing 16 formed integrally with the front portion of the transmission case 13, and the opening on the right side is closed by a lid member 18 fixed with a bolt 17. Rotary shaft 19 of the motor M is supported by a ball bearing 21 provided in the ball bearing 20 and the motor housing 16 the left end of the wall portion 16 ₁ which is provided to the lid member 18. A cooling fan 22 is provided at the right end of the rotating shaft 19 protruding from the lid member 18, and the outer periphery thereof is covered with a fan cover 23 having an air intake port 23 ₁ . The air introduced from the air intake port 23 ₁ by the cooling fan 22 flows into the interior of the motor housing 16 through a hole 18 ₁ of the lid member 18, wall 16 ₁ After cooling the motor M It is supplied from the through hole 16 ₂ in the transmission case 13. This air is further discharged in the transmission case 13 after cooling the belt type continuously variable transmission 15 flows backward from the exhaust air port 13 ₁ formed at the rear end of said transmission dynamic case 13 to the outside. On the other hand, the left end of the rotary shaft 19 extending into the interior of the wall portion 16 ₁ through to the transmission case 13 of the motor housing 16 is used as an input shaft of the direct the belt type continuously variable transmission 15.
[0014]
The motor M is a DC brushless motor and is wound around a rotor 33 having a permanent magnet 32 disposed on the outer periphery of an iron core 31 fixed to the rotary shaft 19 and an iron core 35 fixed by a bolt 34 inside the motor housing 16. In addition to a stator 37 comprising a rotated coil 36, a rotor position sensor 40 comprising a magnet 38 fixed to the rotary shaft 19 and three Hall elements 39 disposed facing the outer periphery thereof.
[0015]
FIG. 3 is a circuit diagram showing a control system of the motor M. In order to control the rotation speed of the motor M, the potential of the potentiometer 42 connected to the accelerator grip 41 of the steering handle 2 and the rotor position sensor 40 are detected. The phase signal of the rotor 33 is input to the controller 11. A driver 43 interposed between the controller 11 and the motor M controls the FET 44 group based on signals from six field effect transistors (hereinafter abbreviated as FETs) 44 and a rotor position sensor 40. And a switching circuit 45 for sequentially switching the stator current of the motor M.
[0016]
As shown in FIGS. 4 to 6, a ring-shaped fixing bracket 47 fixed to the middle of the handle pipe 46 of the steering handle 2 and a tip of the handle pipe 46 are rotatably fitted, and an accelerator grip 41 is provided on the outer periphery thereof. A torsion spring 49 for urging the accelerator grip 41 toward the idling position is mounted between the cylindrical rotary bracket 48 and the cylindrical gripping bracket 48 that are integrally press-fitted. The potentiometer 42 that is operated by rotating the accelerator grip 41 includes a conductor 50 ₁ and a resistor 50 ₂ that are printed in parallel with the surface of the arc-shaped printed circuit board 50 that is fixed to the bottom surface of the fixing bracket 47. 50 ₁ and the resistor 50 ₂ are given potentials of 0 and 5 volts, respectively. Inside the fixed bracket 47, a guide plate 51 having an arcuate guide groove 51 ₁ is fixed in parallel with the printed circuit board 50, and a sliding disposed between the printed circuit board 50 and the guide plate 51. A protrusion 52 ₁ formed on the back surface of the member 52 passes through the guide groove 51 ₁ of the guide plate 51 and is supported by the rotating bracket 48. A metal plate 53 that is electrically connected to the controller 11 is fixed to the front surface of the sliding member 52 so as to be in contact with the conductor 50 ₁ and the resistor 50 ₂ of the printed board 50 simultaneously. Thus, when the accelerator grip 41 is in the illustrated idling position, the potential of the metal plate 53 is about 0.5 volts, and when the accelerator grip 41 is rotated in the direction of the arrow toward the full load position, the potential is reduced. Gradually increases to about 4.5 volts.
[0017]
Next, referring to FIG. 2 again, the structure of the belt type continuously variable transmission 15 housed in the transmission case 13 will be described. The belt-type continuously variable transmission 15 includes a drive pulley 61 provided on a rotary shaft 19 protruding into the transmission case 13 from the motor housing 16 side, and a driven pulley provided on a reduction gear input shaft 62 supported on the rear portion of the transmission case 13. 63, and an endless belt 64 is wound around the pulleys 61 and 63. The drive pulley 61 includes a fixed pulley half 61 ₁ fixed to the rotary shaft 19 and a movable pulley half 61 ₂ supported on the rotary shaft 19 so as to be axially slidable. between the ramp plate 65 fixed to the 61 ₂ and the rotary shaft 19 centrifugal weight 66 is movably arranged in the radial direction. On the other hand, the driven pulley 63 becomes more a reduction gear input shaft 62 stationary pulley half 63 supported on the collar 68 to rotatably fitted through a needle bearing 67 to ₁ and the movable pulley half 63 _2, the The driving force transmitted to the driven pulley 63 is transmitted to the speed reducer input shaft 62 via the automatic centrifugal clutch 69. Then, the side surface of the transmission case 13 for accommodating the belt type continuously variable transmission 15 and the automatic automatic centrifugal clutch 69 is closed by a detachable side cover 13 _2.
[0018]
The reduction gear input shaft 62 is supported by a ball bearing 70 provided on the transmission case 13 and a ball bearing 72 provided on the reduction gear cover 71, and a pair of ball bearings 73 provided on the transmission case 13 and the reduction gear cover 71. An intermediate shaft 76 is supported between the rear wheel Wr and the axle 75 supported by 74. The rotation of the input gear 77 of the speed reducer input shaft 62 is transmitted to the output gear 80 of the axle 75 via the two intermediate gears 78 and 79 of the intermediate shaft 76.
[0019]
As shown in FIGS. 7 and 8, both ends of a mounting stay 81 in which a pipe material is bent in an L shape are fixed to the right side surface of the rear frame F ₃ , and a storage portion 82 having an upper surface opened to the mounting stay 81. The lower and trailing edges are supported. As is apparent from FIG. 8, the storage portion 82 constitutes a car-mounted part having a box shape according to the present invention, and is opposite to the transmission case 13 of the power unit P with the rear wheel Wr interposed therebetween (in particular, the (In a position not interfering with the swing of the power unit P) in the side view and before and after the rear axle (in the illustrated example, covers a wide area covering the side surface of the electric motor M and the central side surface of the rear wheel Wr). Accordingly, the dead space on the right side surface of the vehicle body can be effectively used. The storage portion 82 is formed of a material such as a conductive resin so as to shield the magnetism generated by the motor M in the same manner as the storage portion 9 provided at the lower portion of the seat 8. A lever 85 for performing an opening / closing operation and a locking operation is provided on an upper portion of the pivotable lid 84 that can be opened and closed.
[0020]
Next, the operation of the embodiment of the present invention having the above-described configuration will be described.
[0021]
When the accelerator grip 41 is at the idling position and the rotation speed of the motor M is low, the automatic centrifugal clutch 69 is in a disconnected state, and the driving force of the motor M is not transmitted to the rear wheel Wr. When the accelerator grip 41 is rotated from this state to increase the rotation speed of the motor M, the centrifugal weight 66 moves radially outward along the ramp plate 65 fixed to the rotation shaft 19, and the movable side of the drive pulley 61 is moved. The pulley half 61 ₂ is moved in a direction approaching the fixed pulley half 61 ₁ . Thus, with effective radius is increased in the drive pulley 61, the movable pulley half 63 ₂ of the driven pulley 63 is driven in a direction away from the stationary pulley half 63 ₁ via the endless belt 64, the effective radius Decrease. As a result, the reduction ratio of the belt-type continuously variable transmission 15 decreases and the rotation speed of the collar 68 that rotates together with the driven pulley 63 increases. Eventually, the automatic centrifugal clutch 69 is connected and the driving force of the motor M is reduced. When transmitted to the input shaft 62, the rear wheel Wr is driven via the speed reducer 14.
[0022]
The air introduced from the air intake port 23 ₁ of the fan cover 23 by the cooling fan 22 provided on the rotating shaft 19 of the motor M passes through the inside of the motor housing 16 to cool the motor M, and then the inside of the transmission case 13. It passes through the cooling the belt type continuously variable transmission 15 and the automatic centrifugal clutch 69, and is discharged from the exhaust outlet 13 ₁ to the outside.
[0023]
The storage part 9 provided at the lower part of the seat 8 is mainly used for storing large articles such as helmets, and the storage part 82 provided on the right side of the vehicle body is mainly suitable for storing thin articles or elongated articles. Since any of the storage units 9 and 82 is magnetically shielded, it is possible to prevent stored items such as a floppy disk and a magnetic card from being damaged by magnetism generated from the motor M of the power unit P.
[0024]
FIGS. 9 and 10 show a second embodiment of the present invention. This embodiment is characterized in that the storage portion 82 on the right side of the vehicle body and the storage portion 9 below the seat 8 are integrally connected. Yes. The upper openings of the storage portions 9 and 82 are opened and closed by a seat 8 whose front ends are pivotally supported by a pin 86 so as to be swingable up and down, and an upper cover B ₅ that swings integrally with the seat 8.
[0025]
Thus, also in this embodiment, the dead space on the right side of the vehicle body on the opposite side of the power unit P that cantilever-supports the rear wheel Wr can be effectively used as the article storage portion 82. Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various small design changes can be made without departing from the present invention described in the claims. is there.
[0026]
【The invention's effect】
As described above, according to the invention of each claim, in the scooter type vehicle, a box shape is provided at a position on the opposite side of the power unit transmission case with the rear wheel therebetween so as not to interfere with the swing of the power unit. In-vehicle parts that form a box using the body space on the opposite side of the power unit transmission case while securing sufficient storage space under the seat by the article storage part in the rear body cover . Can be arranged without difficulty. Moreover, the box-shaped in-vehicle component hangs continuously from the lower edge of the rear body cover in a side view and can cover a wide area covering the side of the drive source and the side of the rear wheel. The part can have both a function as a part of the body cover and a function as a part of the rear fender, so that the structure can be simplified and the cost can be reduced and the assembly workability can be improved.
[0027]
In particular, according to the invention of claim 2, the in-vehicle component having the box shape is attached to a stay supported by the vehicle body frame in the rear body cover , so that the in-vehicle component is more firmly and visually shaped by the vehicle body frame in the rear body cover . Can support well.
[0028]
In particular, according to the invention of claim 3, since the drive source is an electric motor, the dead space generated due to the omission of the exhaust muffler can be effectively utilized as a mounting space for a vehicle-mounted component having a box shape. Can be more easily arranged, and the weight balance of the left and right rear wheels can be kept as good as possible despite the omission of the exhaust muffler.
[Brief description of the drawings]
1 is an overall side view of a scooter type vehicle according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1. FIG. 3 is a circuit diagram showing a motor control system. FIG. 5 is a sectional view taken along the line 5-5 in FIG. 4. FIG. 6 is a sectional view taken along the line 6-6 in FIG. 4. FIG. 7 is a right side view of the vehicle body showing the storage portion. 7 is a cross-sectional view taken along line 8-8 in FIG. 7. FIG. 9 is a right side view of the vehicle body showing the storage portion of the second embodiment of the present invention. FIG. 10 is a cross-sectional view taken along line 10-10 in FIG.
B ₃ ...... afterbody cover F ......... body frame M ......... electric motor (driving source)
P: Power unit (rear fork)
Wr …… Rear wheel 1 ………… Head pipe 8 ………… Seat 9 ………… Article storage part 13 …… Transmission case 15 …… Belt type continuously variable transmission (transmission mechanism)
81 …… Stay 82 …… Storage section (in-vehicle parts in the form of a box)

Claims (3)

Drive source and (M), a drive source and a transmission case which is provided continuously to one side of the (M) (13), a rear wheel output of which is accommodated in the transmission case (13) by said drive source (M) ( axially supported vertically swingably to a front end portion of the swing type power unit (P) for supporting the rear end of the rear wheel (Wr) and a transmission mechanism for transmitting the Wr) (15) to the vehicle body frame (F) An occupant seat (8) is disposed above the power unit (P), and the space above the power unit (P) and below the seat (8) is covered with the rear body cover (B ₃ ), In the scooter type vehicle in which the article storage portion (9) is disposed in the rear body cover (B ₃ ),
The rear body cover (B ₃ ) A box-shaped in- vehicle component (82) that continuously hangs down from the lower edge and covers a region extending from the side surface of the drive source (M) to the side surface of the rear wheel (Wr) is provided. Scooter type vehicle. The vehicle mounting part (82), characterized in that attached to the rear body cover stay (81) which is supported on the vehicle body frame (F) of (B ₃₎ in the scooter-type vehicle according to claim 1.   The scooter-type vehicle according to claim 1 or 2, wherein the vehicle is an electric vehicle having the drive source as an electric motor (M).

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