TWI486278B - Vehicle body structure of saddle-ride-type electric vehicle - Google Patents

Description

Body structure of straddle type electric vehicle

The present invention relates to a vehicle body structure of a straddle type electric vehicle.

Patent Document 1 discloses a configuration in which the battery is disposed in the front-rear direction of the vehicle on the left and right sides of the front wheel of the preceding straddle type electric tricycle.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 7-1974

In the above-mentioned conventional configuration, in order to prevent the front wheel from interfering with the battery during the steering of the front wheel, it is necessary to arrange the battery from the center of the vehicle width direction laterally, so that the width dimension of the front portion of the vehicle is generated. Large size.

Further, it is known that in a straddle type electric vehicle, the battery is a weight item, and such a weight item greatly affects the vibration of the vehicle body depending on the arrangement position. Therefore, in the straddle-type electric vehicle, it is expected that the vibration of the vehicle body can be suppressed by the operation of the battery.

The present invention has been made in view of the above-described actual circumstances, and an object of the present invention is to provide a straddle that can suppress the width of the front portion of the vehicle and suppress the vibration of the vehicle body when the battery is disposed at the front of the vehicle. Electric car The structure of the car body.

As a solution to the above problem, a first invention provides a vehicle body structure of a straddle-type electric vehicle, comprising: a vehicle body frame (F) including a head pipe portion (12), from the head pipe portion (12) a frame portion (13, 130, 230) extending rearward, and a pivot portion (16) disposed in the frame portion (13, 130, 230) further rearward than the head tube portion (12), The handle (19) is rotatably supported by the head pipe portion (12), and the front wheel (WF) is disposed below the head pipe portion (12), and is supported by the pivot portion (16) The arm portion (17) supports the rear wheel (WR); and the battery (27, 28) for storing electric power for driving; and characterized in that at least a part of the battery (27, 28) is disposed on the front wheel (WF) and/or integrally turning the front wheel (WF) toward the lateral direction of the front fender (7), and simultaneously arranging the rear portion of the battery (27, 28) on the inner side in the vehicle width direction from the front portion thereof. Further, the battery (27, 28) is disposed so as not to interfere with the front wheel (WF) and/or the front wheel (WF) to integrally steer the front trajectory (7).

According to a second aspect of the invention, in the vehicle body structure of the straddle-type electric vehicle according to the first aspect of the invention, the battery (27, 28) is a left battery (27) disposed on a left side via a center line in a vehicle width direction, and The right battery (28) is disposed on the right side, and the left battery (27) and the right battery (28) are arranged in a figure-eight shape in a plan view, and the left battery (27) and the right battery (28) are disposed. A control device (30) for controlling the motor is disposed behind or after the rear portion.

According to a third aspect of the invention, in the vehicle body structure of the straddle-type electric vehicle according to the first or second aspect, the battery (27, 28) is disposed on a side surface or a lower side of the head pipe portion (12).

The vehicle body structure of the straddle-type electric vehicle according to any one of the first to third aspects, wherein the battery (27, 28) is disposed to connect the head pipe portion (12) and the rear wheel ( On the line (L1, L2) of the ground point (X) of WR).

The vehicle body structure of the straddle-type electric vehicle according to any one of the first to third aspects of the present invention, wherein the battery (27, 28) is formed in a flat shape and arranged in a state in which the surface direction is in the vertical direction. In front of the seat (21), the rear portion is disposed to extend forward and downward from the rear toward the front.

The vehicle body structure of the straddle-type electric vehicle according to any one of the first to third aspects, wherein the frame portion (130, 230) includes a lower row extending downward from the head pipe portion (12). a frame portion (131, 231) and a frame portion (132, 232) extending rearward from a lower portion of the down frame (131, 231), and the battery (27, 28) is along the descending frame portion (131, 231) and configured.

The vehicle body structure of the straddle-type electric vehicle according to any one of the first to third aspects of the present invention, wherein the battery (27, 28) is used as a leg shield.

According to the first aspect of the invention, at least a part of the battery is disposed laterally of the front wheel and/or the front fender, and the battery is inclined in the front-rear direction of the vehicle body so that the rear portion thereof is disposed on the inner side in the vehicle width direction from the front portion. By avoiding interference The front wheel or the front fender is configured in such a manner that the battery can be extended in the front-rear direction of the vehicle and the capacity thereof can be increased on the one hand, and the width dimension of the front portion of the vehicle can be suppressed as much as possible on the one hand, and at the front of the vehicle. The battery is configured so that the space for the occupant is large.

Further, in the straddle type electric vehicle, there is a phenomenon in which the wheel is combined in the yaw and roll directions to cause sway after the weave, and the sway is likely to occur when the rear wheel load is high. In contrast, in the present invention, since the battery as the weight item is disposed in the front portion of the vehicle body, the vibration of the rear wheel can be reduced as compared with the case where the battery is disposed at the rear of the vehicle body.

According to the second aspect of the invention, the traveling air introduction path in which the width dimension is gradually decreased as the left battery and the right battery are directed rearward is provided, so that the traveling wind can be efficiently introduced into the control device, and the cooling of the control device can be promoted.

According to the third aspect of the invention, the load of the front wheels is increased by bringing the battery closer to the front wheels, so that the vibration of the rear wheels can be more reliably reduced.

In the straddle type vehicle, there is a phenomenon that the front wheel is slightly swayed around the steering shaft when it is called a shimmy, which is likely to occur when the front wheel load is high. As a result of intensive research, the inventors of the present invention found that it is difficult to generate a shimmy when a weight article is placed on a straight line connecting the grounding points of the head pipe and the rear wheel. Therefore, according to the fourth invention, the vibration of the front wheels can be effectively suppressed.

According to the fifth aspect of the invention, the space located under the vehicle can be enlarged between the battery and the seat, so that the structure in which the battery and the occupant's foot do not easily interfere with each other can be formed.

According to the sixth invention, after belonging to the downstream frame portion and the lower frame portion When the occupant's foot space is formed above, it is ensured that the foot space is large.

According to the seventh aspect of the invention, on the one hand, the cooling property of the battery can be improved, and on the other hand, the number of parts can be reduced.

Embodiments of the present invention will be described below based on the drawings. Further, in the drawings used below, the arrow FR indicates the front of the vehicle, the arrow UP indicates the upper side of the vehicle, and the arrow LH indicates the left side of the vehicle.

<First embodiment>

Fig. 1 and Fig. 2 show a straddle-type electric two-wheeled motor vehicle 1 that is applied to the structure according to the first embodiment of the present invention. The body frame F of the straddle-type electric two-wheeled vehicle 1 includes a head pipe portion 12 that rotatably supports a front fork WF of the axle front axle WF, and a main frame portion 13 that is at a gentle angle from the head pipe portion 12. After extending rearward and downward, it is curved and extends rearward and downward at an acute angle; the seat rail portion 14 extends rearward of the vicinity of the curved portion of the autonomous frame portion 13; and the support frame portion 15 has a lower portion of the autonomous frame portion 13. It extends laterally rearward and upward and is combined with the seat rail portion 14.

The head pipe portion 12 has a fixed height dimension in the vertical direction, and the main frame portion 13 is coupled to the upper portion side of the head pipe portion 12. The main frame portion 13 is composed of a front half portion 13A that extends straight rearward and downward from the head tube portion 12 at a gentle angle, and a pair of left and right rear half portions 13B that are partially branched from the front half portion 13A and are at an acute angle. Extending backward and downward; lateral frame portion 13C, which is solid It is fixed at the rear end of the first half 13A.

The seat rail portion 14 is formed by a pair of left and right sides, and the front ends of the left and right seat rail portions are coupled to the left and right side portions of the lateral frame portion 13C. Further, a pivot portion 16 including a shaft body or the like is provided at a lower portion of the rear half portion 13B, and the arm portion 17 is supported by the pivot portion 16 in the vertical direction, and the rear wheel WR is supported by the arm portion. Part 17 later.

A handle 19 is fixed to an upper portion of the front fork 11, and an upper housing portion 20 that mimics the shape of a fuel tank of a two-wheeled motor vehicle having an internal combustion engine is disposed above the front half portion 13A of the main frame portion 13. The upper accommodating portion 20 is formed of a resin material or the like, and has a storage space inside, and can be used by opening an appropriate portion. Further, behind the upper accommodating portion 20, a seat 21 on which the driver sits is disposed above the seat rail portion 14. Further, a front cover 22 is provided at the front of the vehicle, which covers the front of the head pipe portion 12 and simultaneously extends from both sides of the head pipe portion 12 to a substantially central position in the front-rear direction of the vehicle and covers a wide range of the front portion of the vehicle. region.

A bracket 23 that protrudes downward is fixed to a substantially central portion of the front half portion 13A of the main frame portion 13 in the front-rear direction, and a left-right portion that protrudes forward is fixed substantially at the center in the lower direction of the rear half portion 13B of the main frame portion 13 For the bracket 24. The motor 26 for driving is fixed by the brackets 23 and 24, and the motor 26 is located substantially at the center in the longitudinal direction of the vehicle, and is covered by the front cover 22. The motor 26 has a circular shape in a side view, and 26A in the figure indicates a drive shaft of the motor 26. The rotation of the drive shaft 26A is transmitted to the rear wheel WR, for example, by a chain.

In the present embodiment, the battery system that stores the electric power supplied to the motor 26 is composed of a left battery unit 27 disposed on the left side and a right battery unit 28 disposed on the right side via a center line CL1 in the vehicle width direction. It is disposed above the motor 26 in a side view and is covered by the front cover 22 described above. The left battery unit 27 and the right battery unit 28 are formed by, for example, accommodating a lithium ion battery or the like in a casing, but may be formed by accommodating a lead battery or the like.

1 and 2, the left battery unit 27 and the right battery unit 28 are formed in a flat shape. In the present embodiment, they are formed in a substantially rectangular shape when viewed in the direction perpendicular to the flat surface. The left battery unit 27 and the right battery unit 28 are disposed in front of the seat 21 in a state in which the flat surface is oriented in the vertical direction, and the front lower portion is disposed on the front wheel WF and the front fender before the front wheel WF is integrally turned. In the lateral direction (left and right) of 7 and at the same time as shown in Fig. 2, the rear portion is disposed on the inner side in the vehicle width direction from the front portion, and is formed in a figure-eight shape in plan view. Further, the left battery unit 27 and the right battery unit 28 are disposed so as not to interfere with the rotation trajectory C1 of the front wheel WF and the rotation trajectory C2 of the front fender 7 before being integrally steered with the front wheel WF.

Here, when the left battery unit 27 and the right battery unit 28 are disposed as described above, the front wheel WF or the front fender 7 can be stroked up and down along the inner side surfaces of the left battery unit 27 and the right battery unit 28. action. Therefore, the left battery unit 27 and the right battery unit 28 are formed with a stroke space of the steering system.

The left battery unit 27 and the rear battery unit 28 are in the direction of the vehicle width Separated from the rear of the left battery unit 27 and the right battery unit 28, a PCU 30 (Power Control Unit) as a control device for controlling the motor 26 is disposed. The PCU 30 is disposed between the motor 26 and the left battery unit 27 and the right battery unit 28 in a side view, and the front surface of the PCU 30 is opposed to the space between the rear portions of the left battery unit 27 and the right battery unit 28.

Furthermore, in the present embodiment, the PCU 30 is disposed behind the rear battery unit 27 and the right battery unit 28, but may be disposed between the left battery unit 27 and the rear battery unit 28.

Hereinafter, when the arrangement of the left battery unit 27 and the right battery unit 28 is described in more detail, in the present embodiment, the left battery unit 27 and the right battery unit 28 are located laterally of the head tube portion 12, and The head tube portion 12 is covered laterally. Further, the left battery unit 27 and the right battery unit 28 are disposed such that the rear portions 27R and 28R extend substantially straight forward and downward from the rear toward the front, and the front portion thereof is further forward than the head pipe portion 12. It is configured to extend from the rear toward the front and forward and downward.

Further, in Fig. 1, L1 indicates a straight line connecting the lower end portion (specifically, the axial center of the lower end portion) of the head pipe portion 12 and the ground point X of the rear wheel WR, and L2 indicates the upper end of the joint head pipe portion 12. The straight line of the portion (in detail, the axis center of the upper end portion) and the ground point X of the rear wheel WR. When the arrangement of the left battery unit 27 and the right battery unit 28 is described by the relationship between the straight line L1 and the straight line L2, in the present embodiment, the left battery unit 27 and the right battery unit 28 are arranged in a side view. On line L1 and line L2. Again, here, The motor 26 is also disposed on the straight line L1 and the straight line L2 in a side view.

On the other hand, referring to Fig. 2, in the present embodiment, the left housing portion 32 is provided behind the left battery unit 27, and the right housing portion 33 is provided behind the right battery unit 28. The left accommodating portion 32 and the right accommodating portion 33 are provided with a motor 26 interposed therebetween, and are covered by the front cover 22 on the one hand. The front portion of the left accommodating portion 32 and the right accommodating portion 33 extends obliquely forward from the inner side toward the outer side in the vehicle width direction so as to face the surfaces of the left battery unit 27 and the right battery unit 28, and the PCU 30 is housed by the left side. The portion 32 and the right housing portion 33 are covered from the side.

As described above, in the first embodiment of the present invention, the straddle-type electric two-wheeled motor vehicle 1 includes a vehicle body frame F including a head pipe portion 12 and a main frame portion 13 extending rearward from the head pipe portion 12. And the pivot portion 16 disposed in the main frame portion 13 closer to the lower rear than the head tube portion 12, on the one hand, the handle 19 is rotatably supported on the head tube portion 12, and the front wheel WF is disposed on the lower side of the head tube portion 12. And the rear wheel WR is supported via the arm portion 17 that is swingably supported by the pivot portion 16; and the left battery unit 27 and the right battery unit 28 are used to store electric power for driving.

Further, at least a part of the left battery unit 27 and the right battery unit 28 are disposed on the front side of the front wheel WF and the front wheel WF, and the rear side of the left battery unit 27 and the right battery unit 28 are disposed at the same time. The front portion is further inward in the vehicle width direction, and the left battery unit 27 and the right battery unit 28 are rotated so as not to interfere with the front wheel WF and the front wheel WF. Configure the way by turning the track (C1, C2).

In such a configuration, one of the left battery unit 27 and the right battery unit 28 is disposed laterally of the front wheel WF and the front fender 7, and the rear portion is disposed on the inner side in the vehicle width direction from the front portion thereof. The left battery unit 27 and the right battery unit 28 are inclined in the front-rear direction of the vehicle body, and are arranged in such a manner as to avoid interference with the front wheel WF and the front fender 7, whereby the battery can be extended in the front-rear direction of the vehicle. On the one hand, the capacity can be increased. On the one hand, the width dimension of the front portion of the vehicle can be suppressed as much as possible, and since the left battery unit 27 and the right battery unit 28 are disposed in the front portion of the vehicle, the space of the occupant can be ensured. Big.

Further, since the left battery unit 27 and the right battery unit 28, which are weights, are disposed in the front portion of the vehicle body, the vibration of the rear wheel WR can be reduced as compared with the case where the battery is disposed at the rear of the vehicle body.

Further, in the present embodiment, the left battery unit 27 and the right battery unit 28 are arranged in a figure-eight shape in plan view, and the control unit 26 is disposed behind the rear battery unit 27 and the right battery unit 28. Control unit PCU30.

In such a configuration, the traveling air introduction path in which the width dimension is gradually decreased as the left battery unit 27 and the right battery unit 28 are directed rearward is provided, so that the traveling wind can be efficiently introduced into the PCU 30, and the cooling of the PCU 30 can be promoted.

Further, in the present embodiment, the left battery unit 27 and the right battery unit 28 are disposed laterally of the head pipe portion 12.

In this configuration, by making the left battery unit 27 and the right battery unit 28 Close to the front wheel WF, the load of the front wheel WF can be increased, so that the vibration of the rear wheel WR can be more reliably reduced.

Further, in the present embodiment, the left battery unit 27 and the right battery unit 28 are disposed on the straight line L1 and the straight line L2 connecting the grounding point X of the head pipe portion 12 and the rear wheel WR, but this configuration can also be effective. The vibration of the front wheel WF is suppressed. Further, in the present embodiment, both of the left battery unit 27 and the right battery unit 28 are disposed on the straight line L1 and the straight line L2. However, the above effects can be obtained by being disposed on either of the straight line L1 and the straight line L2.

Further, in the present embodiment, the left battery unit 27 and the right battery unit 28 are formed in a flat shape, and are disposed in front of the seat 21 in a state in which the flat surface is oriented in the vertical direction, and the rear portion is rearward. It is configured to face forward and extend forward and downward.

In this configuration, the space under the vehicle can be enlarged between the left battery unit 27 and the right battery unit 28 and the seat 21, so that the left battery unit 27 and the right battery unit 28 can be formed and the occupant's feet are not easily generated. The structure of the interference.

<Second embodiment>

Next, a second embodiment of the present invention will be described. In the present embodiment, the structure related to the present invention is applied to the low-chassis type straddle-type electric two-wheel vehicle 100 shown in FIG. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and a part of them will be omitted.

In the straddle-type electric two-wheeled motor vehicle 100 shown in FIG. 3, the vehicle body frame F includes a head pipe portion 12 that rotatably supports the front fork 11 of the front axle WF, and a side view extending rearward from the head pipe portion 12. The frame portion 130 bent downward in an L shape.

The frame portion 130 includes a row frame portion 131 extending rearward and downward from the head pipe portion 12, and a frame portion 132 extending downward from the lower portion of the lower frame portion 131 at a slow angle, and is disposed on the rear side of the lower frame portion 132. There is a pivot portion 16 including a shaft body or the like. The arm portion 17 is slidably supported by the pivot portion 16 in the up and down direction, and the rear wheel WR is pivotally supported at the rear portion of the arm portion 17.

The head pipe portion 12 has a fixed height dimension in the vertical direction, a lower frame portion 131 is coupled to the lower portion side of the head pipe portion 12, and a handle 19 is disposed above the head pipe portion 12. Further, a footrest 133 on which the occupant places the foot is provided above the front side of the lower frame portion 132, and a seat on which the occupant sits is placed above the footrest 133 on the rear side of the lower frame portion 132. twenty one. Further, the occupant's footrest space S is formed above the lower frame portion 131 and above the lower frame portion 132.

The seat 21 and the lower frame portion 132 are spaced apart from each other in the vertical direction, and a storage box 134 is provided between them, and the storage box 134 is covered with the cover 135 as an exterior member to cover the entire circumference. Further, a rear buffer unit 136 is inserted and inserted between the lower frame portion 132 and the rear portion of the arm portion 17.

In the straddle-type electric two-wheeled vehicle 100, a so-called hub motor is used, and the motor 26 is disposed on the rear wheel WR. A battery system that supplies electric power to the motor 26 is disposed on The front portion of the vehicle, also referring to FIG. 4, is composed of a left battery unit 27 and a right battery unit 28. The left battery unit 27 and the right battery unit 28 are disposed on both sides across the center line CL1 in the vehicle width direction.

The left battery unit 27 and the right battery unit 28 are formed in a flat shape, and in the present embodiment, they are formed in a substantially rectangular shape when viewed in the direction perpendicular to the flat surface. The left battery unit 27 and the right battery unit 28 are disposed in the vertical direction from the front side in the vertical direction from the center portion of the front side in the vertical direction, and are disposed in front of the front wheel WF and the front wheel WF. The lateral direction of the plate 7 (left and right), and at the same time, as shown in Fig. 4, the rear portion is disposed on the inner side in the vehicle width direction from the front portion, and is formed in a figure-eight shape in plan view.

Further, as shown in FIG. 4, the left battery unit 27 and the right battery unit 28 are disposed so as not to interfere with the rotation trajectory C1 of the front wheel WF and the rotation trajectory C2 of the fender 7 before the front wheel WF is integrally steered. Further, the left battery unit 27 and the right battery unit 28 are located in front of the footrest 133 in a side view as a foot of the occupant (indicated by a chain double-dashed line in FIG. 4) placed on the foot board 133. The leg shield is functional.

In the present embodiment, the rear portions of the left battery unit 27 and the right battery unit 28 are spaced apart in the vehicle width direction, and the control unit 26 is disposed behind the rear battery unit 27 and the right battery unit 28. The PCU30 (Power Control Unit) of the control device. The PCU 30 is disposed between the motor 26 and the left battery unit 27 and the right battery unit 28 in a side view, and the front surface of the PCU 30 is in a spatial phase with the rear portion of the left battery unit 27 and the right battery unit 28. Opposite.

In the case where the arrangement of the left battery unit 27 and the right battery unit 28 is described in more detail, in the present embodiment, the left battery unit 27 and the right battery unit 28 are located below the head pipe portion 12. Further, the left battery unit 27 and the right battery unit 28 are disposed along the descending frame portion 131 (the direction in which the surface direction is substantially parallel to the direction in which the descending frame portion 131 extends), and the rear portions 27R and 28R are oriented from the rear side in a side view. The front is arranged substantially straight forward and upward.

Further, in Fig. 1, L1 indicates a straight line connecting the lower end portion of the head pipe portion 12 (specifically, the axial center of the lower end portion) and the ground point X of the rear wheel WR, and L2 indicates the upper end of the joint head pipe portion 12. The straight line of the part (in detail, the axis center of the upper end) and the ground point X of the rear wheel WR. When the arrangement of the left battery unit 27 and the right battery unit 28 is described by the relationship between the straight line L1 and the straight line L2, in the present embodiment, the left battery unit 27 and the right battery unit 28 are arranged in a side view. On line L1.

In the second embodiment of the present invention as described above, in addition to the effects described in the first embodiment, the frame portion 130 includes the lower frame portion 131 extending downward from the head tube portion 12, and the lower frame portion. The lower portion 131 extends rearwardly below the frame portion 132, and the left battery unit 27 and the right battery unit 28 are disposed along the descending frame portion 131. Therefore, the lower portion is formed behind the lower frame portion 131 and the lower frame portion 132 is formed. In the case of the foot space S, it is ensured that the foot space S is wider.

Moreover, since the left battery unit 27 and the right battery unit 28 are exposed to the outside and used as a leg shield, the battery can be cooled with good cooling performance, and the number of parts can be reduced.

Further, in the present embodiment, an example in which a hub motor is used has been described, but the motor 26 may be provided at a position indicated by a chain double-dashed line in FIG. In this case, it is preferable that the motor 26 is disposed on the straight line L1 as shown in the figure, and in this case, the vibration of the front wheel WF can be suppressed.

<Third embodiment>

Next, a third embodiment of the present invention will be described. In the present embodiment, the straddle-type electric two-wheeled vehicle 200 shown in Fig. 5 is applied to the structure related to the present invention. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and a part of the description will be omitted.

In the straddle-type electric two-wheel motor vehicle 200 shown in FIG. 5, the vehicle body frame F includes a head pipe portion 12 that rotatably supports the front fork 11 of the front axle WF, and a frame portion that extends rearward from the head pipe portion 12. 230.

The frame portion 230 includes a row frame portion 231 extending rearward and downward from the head pipe portion 12, a frame portion 232 extending rearward from a lower portion of the lower frame portion 231 in a substantially horizontal state, and a rear portion rearward from the lower frame portion 232. The seat rail portion 233 extending upward is formed, and a pivot portion 16 including a shaft body or the like is provided behind the rear end portion of the lower frame portion 232. The arm portion 17 is slidably supported by the pivot portion 16 in the up and down direction, and the rear wheel WR is pivotally supported at the rear portion of the arm portion 17.

The head pipe portion 12 has a fixed height dimension in the vertical direction, a lower frame portion 231 is coupled to the lower portion side of the head pipe portion 12, and a handle 19 is disposed above the head pipe portion 12. An occupant seat 21 is disposed behind the head pipe portion 12, and an occupant's footrest space S is formed between the seat 21 and the head pipe portion 12 and the down frame portion 231.

The seat 21 is spaced apart from the seat rail portion 233, and a storage box 234 is provided between the seat 21 and the seat rail portion 233. The storage box 234 is used as an exterior part cover 235. To cover the whole week. The rear cover 235 extends in the front-rear direction from the lower frame portion 232 along the seat rail portion 233, and covers the seat rail portion 233 from the lower frame portion 232. Further, a rear cushion unit 236 is inserted and inserted between the front portion of the seat rail portion 233 and the front portion of the arm portion 17.

In the straddle-type electric two-wheel motor vehicle 200, a motor 26 is disposed adjacent to a portion where the lower frame portion 232 and the seat rail portion 233 are coupled, and the motor 26 is covered by the rear cover 235. The motor 26 is supported by the lower frame portion 232 and the seat rail portion 233. The motor 26 has a circular shape in a side view, and 26A in the figure indicates a drive shaft of the motor 26. The rotation of the drive shaft 26A is transmitted to the rear wheel WR, for example, by a chain.

A battery that supplies electric power to the motor 26 is disposed in front of the vehicle. Referring also to FIG. 6, the battery is composed of a left battery unit 27 and a right battery unit 28. The left battery unit 27 and the right battery unit 28 are disposed on both sides across the center line CL1 in the vehicle width direction.

The left battery unit 27 and the right battery unit 28 are formed in a flat shape, and the present embodiment In the form, it is formed in a substantially rectangular shape when viewed in the direction perpendicular to the flat surface. The left battery unit 27 and the right battery unit 28 are in a state in which the direction of the flat surface is slightly inclined and are in the vertical direction, and the front upper portion is disposed on the side of the fender 7 before the front wheel WF is integrally turned (left and right). The rear portion is disposed on the inner side in the vehicle width direction from the front portion, and is formed in a figure-eight shape in plan view.

Further, as shown in FIG. 6, the left battery unit 27 and the right battery unit 28 are disposed so as not to interfere with the rotational trajectory C1 of the front wheel WF and the rotational trajectory C2 of the fender 7 before the front wheel WF is integrally turned. Further, as shown in Fig. 5, in the present embodiment, a pedal 237 that protrudes in the vehicle width direction is provided in the vicinity of the motor 26 at the lower portion of the vehicle, and the occupant rests the foot on the pedal 237. Moreover, in a side view, the left battery unit 27 and the right battery unit 28 are located in front of the pedal 237, and the left battery unit 27 and the right battery unit 28 serve as a leg shield for protecting the occupant's foot resting on the pedal 237. Play the function.

Here, as shown in FIG. 6, in the present embodiment, a plate-shaped left guard portion 27A and a right guard portion 28A extending outward in the vehicle width direction are provided in front of the left battery unit 27 and the right battery unit 28. The left guard portion 27A and the right guard portion 28A are formed of a resin material, and extend obliquely rearward from the front portion of the left battery unit 27 and the right battery unit 28 toward the vehicle width direction, and simultaneously from the left battery unit 27 and the right battery unit 28 The upper end portion extends to the lower end portion. In the present embodiment, the left guard portion 27A and the right guard portion 28A are shaped to protect the occupant's foot obliquely forward from the vehicle width direction.

Moreover, in the present embodiment, the left battery unit 27 and the right battery unit 28 The rear portions are spaced apart from each other in the vehicle width direction, and a PCU 30 (Power Control Unit) as a control device for controlling the motor 26 is disposed behind the left battery unit 27 and the right battery unit 28. The PCU 30 is disposed between the motor 26 and the left battery unit 27 and the right battery unit 28 in a side view, and the front surface of the PCU 30 is opposed to the space between the rear portions of the left battery unit 27 and the right battery unit 28.

Here, when the arrangement of the left battery unit 27 and the right battery unit 28 is described in more detail, in the present embodiment, the left battery unit 27 and the right battery unit 28 are located below the head pipe portion 12. Further, the left battery unit 27 and the right battery unit 28 are disposed along the descending frame portion 231, and the rear portions 27R and 28R are disposed to extend substantially forward and upward from the rear toward the front in a side view.

Further, in Fig. 5, L1 indicates a straight line connecting the lower end portion of the head pipe portion 12 (specifically, the axial center of the lower end portion) and the ground point X of the rear wheel WR, and L2 indicates the upper end of the joint head pipe portion 12. The straight line of the part (in detail, the axis center of the upper end) and the ground point X of the rear wheel WR. When the arrangement of the left battery unit 27 and the right battery unit 28 is described by the relationship between the straight line L1 and the straight line L2, in the present embodiment, the left battery unit 27 and the right battery unit 28 are viewed from the side. Configured on line L1. Further, the motor 26 is located on the straight line L1 and the straight line L2.

In the third embodiment of the present invention as described above, the frame portion 230 includes the self-head tube portion 12 in addition to the effects described in the first embodiment. The lower frame portion 231 extends downward and the lower frame portion 232 extends rearward from the lower portion of the lower frame portion 231, and the left battery unit 27 and the right battery unit 28 are disposed along the down frame portion 231, so that they belong to the lower frame portion. When the occupant's footrest space S is formed in the rear of the 231 and the lower frame portion 132, the footrest space S can be spaciously secured.

Moreover, since the left battery unit 27 and the right battery unit 28 are exposed to the outside and used as a leg shield, the battery can be cooled with good cooling performance, and the number of parts can be reduced.

Further, in the present embodiment, the left side guard portion 27A and the right guard portion 28A extending in the vehicle width direction outer side are provided in the front portion of the left battery unit 27 and the right battery unit 28, but they may be replaced by the left side. The shield portion 27A and the right guard portion 28A form battery frame extension portions 27B and 28B for accommodating the battery as shown in Fig. 7 . In this case, it is ensured that the capacity of the battery is large.

<Fourth embodiment>

Next, a fourth embodiment of the present invention will be described. In the first to third embodiments described above, the battery is constituted by a pair of right and left battery cells of the left battery unit 27 and the right battery unit 28. However, in the present embodiment, the battery is a single unit.

As shown in Fig. 8, in the present embodiment, the battery 270 is formed in an arc shape which is open to the front in a cross section. Further, in the present embodiment, both end portions of the battery 270 are disposed on the side of the front wheel WF and the fender 7 before the front wheel WF is integrally turned, and the mud is prevented from interfering with the front wheel WF and the front wheel WF. The rotation trajectory (C1, C2) of the board 7 is configured.

In this embodiment, since the battery 270 integrally extends left and right across the center line CL1 in the vehicle width direction, it is easy to ensure that the capacity of the battery is large.

<Fifth Embodiment>

Next, a fifth embodiment of the present invention will be described. In the first to third embodiments described above, an example in which the battery is constituted by a pair of right and left battery cells of the left battery unit 27 and the right battery unit 28 has been described. However, in the present embodiment, the battery is used as the left and right pairs. .

As shown in FIG. 9, in the present embodiment, the first battery unit 271 and the second battery unit 272 are disposed on the left side via the center line CL1 in the vehicle width direction, and the third battery unit 273 and the fourth unit are disposed on the right side. Battery unit 274. The first battery unit 271 and the fourth battery unit 274 are located laterally of the fender 7 before the front wheel WF and the front wheel WF are integrally turned. In each of the battery cells 271 to 274, the rear portion is disposed on the inner side in the vehicle width direction from the front portion, and is disposed along the rotation locus (C1, C2) of the fender 7 before the front wheel WF and the front wheel WF are integrally turned.

In this embodiment, by arranging a plurality of battery cells 271 to 274 along the front wheel WF and the front wheel WF integrally toward the rotation locus (C1, C2) of the front fender 7, it can be easily arranged in the vehicle. battery. Furthermore, in the present embodiment, the battery is two pairs of right and left, but the battery may be configured by three pairs of right and left.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto. The above-described embodiments can be appropriately modified without departing from the spirit and scope of the invention.

For example, in the above-described first to third embodiments, the case where the left battery unit 27 and the right battery unit 28 are rectangular articles has been described. However, the present invention is not limited to the shape of the vehicle, and may be configured according to the structure of the vehicle body. Or designed to form, for example, may also be curved.

Further, in the vehicle without the front fender 7, at least one of the batteries may be disposed on the side of the front wheel WF.

1‧‧‧Side-seater electric two-wheeled vehicle

7‧‧‧Front fender

11‧‧‧ Front fork

12‧‧‧ Head Tube Department

13‧‧‧Main Frame Department (Framework Department)

13A‧‧‧ first half

The second half of 13B‧‧

13C‧‧‧Horizontal Frame Department

14‧‧‧Seat rails

15‧‧‧Support Frame Department

16‧‧‧ pivot

17‧‧‧ Arms

19‧‧‧Hands

20‧‧‧Upper Storage Department

21‧‧‧ seats

22‧‧‧ front cover

23‧‧‧ bracket

24‧‧‧ bracket

26‧‧‧Motor

26A‧‧‧ drive shaft

27‧‧‧Left battery unit (battery)

27A‧‧‧Left Protection

27B‧‧‧Battery frame extension

27R‧‧‧Left battery unit 27 rear

28‧‧‧Right battery unit (battery)

28A‧‧‧Right Protection Department

28B‧‧‧Battery frame extension

28R‧‧‧The rear of the right battery unit 28

30‧‧‧PCU

32‧‧‧Left storage

33‧‧‧right storage department

100‧‧‧ straddle-type electric two-wheeled vehicle (straddle-type electric vehicle)

130‧‧‧Framework

131‧‧‧Down Frame Department

132‧‧‧ Lower Frame Department

133‧‧‧ pedals

134‧‧‧ storage box

135‧‧‧ back cover

136‧‧‧ rear buffer unit

200‧‧‧ straddle-type electric two-wheeled vehicle (straddle-type electric vehicle)

230‧‧‧Framework

231‧‧‧Down Frame Department

232‧‧‧ Lower Frame Department

233‧‧‧Seat rails

234‧‧‧ storage box

235‧‧‧Back cover

236‧‧‧ rear buffer unit

237‧‧‧ pedal

270‧‧‧Battery

271‧‧‧1st battery unit

272‧‧‧2nd battery unit

273‧‧‧3rd battery unit

274‧‧‧4th battery unit

C1‧‧‧The rotation of the front wheel WF

Rotating track of C2‧‧‧ front fender 7

CL1‧‧‧ center line of the car width direction

F‧‧‧ body frame

FR‧‧‧ vehicle front

L1‧‧‧ Straight line connecting the lower end of the head tube portion 12 to the ground point X of the rear wheel WR

L2‧‧‧ Straight line connecting the upper end of the head tube portion 12 to the ground point X of the rear wheel WR

LH‧‧‧ left side of the vehicle

S‧‧‧foot space

Above UP‧‧‧ vehicles

WF‧‧‧ front wheel

WR‧‧‧ rear wheel

X‧‧‧ grounding point

Fig. 1 is a side view of a straddle-type electric vehicle to which the structure according to the first embodiment of the present invention is applied.

Fig. 2 is a plan view of a straddle-type electric vehicle to which the structure according to the first embodiment of the present invention is applied.

Fig. 3 is a side view of a straddle-type electric vehicle to which the structure according to the second embodiment of the present invention is applied.

Fig. 4 is a schematic view showing the vicinity of the front wheel of the straddle type electric vehicle to which the structure according to the second embodiment of the present invention is applied, and showing the positional relationship between the front wheel and the fender and the battery.

Fig. 5 is a side view of a straddle type electric vehicle to which the structure according to the third embodiment of the present invention is applied.

Fig. 6 is a schematic view showing the vicinity of the front wheel of a straddle type electric vehicle to which the structure relating to the third embodiment of the present invention is applied, and showing the front wheel and the fender and the electric power. A map of the positional relationship of the pool.

Fig. 7 is a view for explaining a modification of the third embodiment.

Fig. 8 is a view for explaining a fourth embodiment of the present invention.

Fig. 9 is a view for explaining a fifth embodiment of the present invention.

1‧‧‧Side-seater electric two-wheeled vehicle

13‧‧‧Main Frame Department (Framework Department)

13A‧‧‧ first half

The second half of 13B‧‧

13C‧‧‧Horizontal Frame Department

14‧‧‧Seat rails

20‧‧‧Upper Storage Department

21‧‧‧ seats

22‧‧‧ front cover

27‧‧‧Left battery unit (battery)

28‧‧‧Right battery unit (battery)

30‧‧‧PCU

32‧‧‧Left storage

33‧‧‧right storage department

C1‧‧‧The rotation of the front wheel WF

Rotating track of C2‧‧‧ front fender 7

CL1‧‧‧ center line of the car width direction

F‧‧‧ body frame

FR‧‧‧ vehicle front

LH‧‧‧ left side of the vehicle

WF‧‧‧ front wheel

Claims (5)

A vehicle body structure of a straddle-type electric vehicle includes a vehicle body frame (F) and a battery (27, 28) for storing electric power for driving, and the vehicle body frame (F) is provided with a head pipe portion (12) a frame portion (13) extending rearward from the head pipe portion (12), and a pivot portion (16) disposed in the frame portion (13) further rearward than the head pipe portion (12), The handle (19) is rotatably supported by the head pipe portion (12), and the front wheel (WF) is disposed below the head pipe portion (12), and is rotatably supported by the pivot portion (16). The arm portion (17) supports the rear wheel (WR); the vehicle body structure of the straddle-type electric vehicle is characterized in that at least a part of the battery (27, 28) is disposed on the front wheel (WF) and/or Or integrally turning the front wheel (WF) toward the side of the front fender (7), and arranging the rear portion of the battery (27, 28) on the inner side in the vehicle width direction from the front portion, the battery (27, 28) The battery is disposed on the side of the head pipe portion (12) so as not to interfere with the front wheel (WF) and/or the front wheel (WF) integrally turned toward the front fender (7). 27, 28) It is formed in a flat shape, and is placed in front of the seat (21) with the surface direction in the vertical direction. The battery (27, 28) is rectangular in a side view, and the rear portion is oriented from the rear toward the front. It is disposed to extend forward and downward, and its front portion is disposed forward of the head pipe portion (12) so as to extend forward from the rear toward the front and forward and downward. The vehicle body structure of the straddle-type electric vehicle according to the first aspect of the invention, wherein the battery (27, 28) is a left battery (27) disposed on the left side via a center line in a vehicle width direction, and a configuration The right battery (28) is configured on the right side, and the left battery (27) and the right battery (28) are arranged in a figure-eight shape in a plan view, and are disposed behind the left battery (27) and the right battery (28). A control device (30) for controlling the motor (26) is disposed between the rear side and the rear portion. The vehicle body structure of the straddle-type electric vehicle according to claim 1 or 2, wherein the battery (27, 28) is disposed at a grounding point connecting the head pipe portion (12) and the rear wheel (WR) On the straight line (L1, L2) of (X). The vehicle body structure of the straddle-type electric vehicle according to claim 1 or 2, wherein the straight line (L1, L2) connecting the grounding point (X) of the head pipe portion (12) and the rear wheel (WR) A motor (26) for driving is disposed on the motor. The vehicle body structure of the straddle-type electric vehicle according to claim 3, wherein the line (L1, L2) connecting the grounding point (X) of the head pipe portion (12) and the rear wheel (WR) is A motor (26) for driving is provided.