JP2019189053A - Electric vehicle - Google Patents

Abstract

To facilitate, in an electric vehicle including an attachable/detachable battery, attachment and detachment of the battery.SOLUTION: An electric vehicle 1 comprises: a front wheel; a rear wheel 3; a front vehicle body 10 supporting the front wheel and having a vehicle body frame 14 and a seat 12 on which one sits; a swing unit 50 having a motor that drives the rear wheel 3, supporting the rear wheel 3; and provided so as to be rotatable around a pivot axial line P extending along a vehicle width direction with respect to the front vehicle body 10; and a battery accommodation unit 102 disposed lower than the seat 12 and holding a battery 105, which is a power source for the motor, such that the battery can be taken out toward a side from a position lower than the seat 12.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electric vehicle.

  Some electric vehicles include a motor that drives rear wheels and a battery that supplies electric power to the motor, and the battery is detachably provided. For example, in Patent Document 1, a battery that supplies power to a motor that rotates a wheel is provided in a housing portion formed in a lower portion of a seat on which a user sits, and the seat is pivotally supported to be openable and closable with respect to the housing portion. A vehicle is disclosed. In this electric vehicle, the battery is taken out from the accommodating portion by lifting the battery upward.

Japanese Patent No. 4989263

  However, in the configuration in which the battery is lifted and taken out from the accommodating portion under the seat as in the above-described prior art, it is necessary to lift the battery to a position higher than the seat when the battery is attached or detached. In this case, since the battery is heavy, there is a possibility that the work load when the battery is attached or detached becomes large. Therefore, in the prior art, there is room for improvement in that the work load at the time of battery attachment / detachment is reduced and the battery attachment / detachment is facilitated.

  Accordingly, an object of the present invention is to facilitate the attachment / detachment of a battery in an electric vehicle including a detachable battery.

  An electric vehicle according to a first aspect of the invention supports a front wheel (2), a rear wheel (3), the front wheel (2), a body frame (14), and a seat for seating (12). A front vehicle body (10, 610) having a motor (61) for driving the rear wheel (3), supporting the rear wheel (3), and for the front vehicle body (10, 610) A swing unit (50, 658) provided so as to be rotatable around a pivot axis (P) extending along the vehicle width direction, and disposed below the seat (12), and powered by the motor (61) And a battery housing portion (102) for holding a battery (105) so that the battery (105) can be taken out from a position below the seat (12).

  The electric vehicle according to a second aspect of the present invention is characterized in that the battery accommodating portion (102) is supported by the swing unit (50, 658).

  The electric vehicle according to the invention described in claim 3 further includes a battery housing cover (38) that covers the battery housing (102) from at least one in the vehicle width direction.

  According to a fourth aspect of the present invention, there is provided an electric vehicle in which the body frame (14) is provided below the seat (12), and a pair of seat frames (23) arranged at intervals in the vehicle width direction. ), And the battery accommodating portion (102) is disposed between the pair of seat frames (23).

  The electric vehicle according to a fifth aspect of the present invention further includes a front vehicle body cover (30) that covers the front vehicle body (10), and the front vehicle body cover (30) is disposed below the seat (12). A step floor (33) is provided that extends in the front-rear direction and on which a foot of an occupant on which the seat (12) sits is placed, so that the battery housing part (102) can pull out the battery (105) forward. It is characterized by being formed.

  The electric vehicle according to a sixth aspect of the invention is characterized in that the battery accommodating portion (102) is formed so that the battery (105) can be pulled out forward and upward.

  The electric vehicle according to the seventh aspect of the present invention further includes a front vehicle body cover (30) that covers the front vehicle body (10), and the front vehicle body cover (30) is disposed below the seat (12). A step floor (33) that extends in the front-rear direction and on which the feet of the occupant on which the seat (12) sits is placed, and extends upward from the rear portion of the step floor (33), and the legs of the occupant are disposed. A rear cover (35) for defining the space from the rear and covering the battery housing (102) from the front, and the rear cover (35) is configured to displace the lower end upward so that the step floor (33) ) With respect to the first rotation axis (O1) extending along the vehicle width direction.

  The electric vehicle according to an eighth aspect of the present invention further includes a front vehicle body cover (30) that covers the front vehicle body (10), and the front vehicle body cover (30) is disposed below the seat (12). A step floor (33) that extends in the front-rear direction and on which a foot of an occupant seated on the seat (12) is placed, and extends upward from a rear portion of the step floor (33), and a leg portion of the occupant is disposed. A rear cover (35) that demarcates the space from the rear and covers the battery housing (102) from the front, and the rear cover (35) displaces the upper end downward. (33) provided so as to be rotatable around a second rotation axis (O2) extending along the vehicle width direction with respect to (33).

  The electric vehicle according to the ninth aspect of the invention further includes a front vehicle body cover (30) that covers the front vehicle body (10), and the front vehicle body cover (30) is disposed below the seat (12). A step floor (33) that extends in the front-rear direction and on which a foot of an occupant seated on the seat (12) is placed, and extends upward from a rear portion of the step floor (33), and a leg portion of the occupant is disposed. A rear cover (35) for defining the space from the rear and covering the battery housing (102) from the front, and the rear cover (35) is connected to the body frame (14) via a link mechanism (207). It is connected and provided so that it can displace upwards.

  The electric vehicle according to the invention of claim 10 further includes a front vehicle body cover (30) that covers the front vehicle body (10), and the front vehicle body cover (30) is disposed below the seat (12). A step floor (33) that extends in the front-rear direction and on which a foot of an occupant seated on the seat (12) is placed, and extends upward from a rear portion of the step floor (33), and a leg portion of the occupant is disposed. A rear cover (435, 535) that demarcates the space from the rear and covers the battery housing (102) from the front, and the rear cover (435, 535) is the step floor (33) when viewed from the vehicle front-rear direction. ) With respect to at least one side in the vehicle width direction.

  The electric vehicle according to an eleventh aspect of the invention is characterized in that the battery housing portion (102) is formed so that the battery (105) can be pulled out in one direction in the vehicle width direction.

  In the electric vehicle according to a twelfth aspect of the present invention, a pair of the rear wheels (3) is provided, and the swing unit (50, 658) includes the motor (61), and the pair of rear wheels (3). And a swing mechanism for movably connecting the front vehicle body (10, 610) and the power unit (51) about a rolling axis (R) extending in a direction orthogonal to the vehicle width direction. Part (53,653).

  In the electric vehicle according to the thirteenth aspect of the present invention, the battery accommodating portion (102) is supported at a location that rotates about the rolling axis (R) with respect to the power unit (51). Features.

  According to the first aspect of the present invention, the heavy battery can be taken out from the vehicle without being lifted to a position higher than the seat. Therefore, the work load when attaching and detaching the battery is reduced. Therefore, the battery can be easily attached and detached.

  According to the second aspect of the present invention, it is possible to avoid the wiring extending from the battery housing portion to the motor straddling the front vehicle body and the swing unit that rotate relative to each other. Thereby, it can suppress that load is applied to wiring and can secure electrical safety. Further, since the swing unit can be attached to the front vehicle body after the battery accommodating portion is assembled to the swing unit, the assembling property of the vehicle can be improved.

  According to the invention described in claim 3, it is possible to suppress water exposure from the vehicle width direction in the battery housing portion. Further, when the battery housing portion is supported by the swing unit, it is possible to hide the state in which the battery housing portion rotates around the pivot axis with respect to the front vehicle body. Therefore, the external appearance of the electric vehicle can be improved.

  According to the invention described in claim 4, the contact of the object from the vehicle width direction to the battery housing portion can be prevented by the seat frame. Therefore, the protection performance of the battery housing part and the battery can be improved.

  According to the fifth aspect of the present invention, the battery can be pulled out from the battery accommodating portion along the step floor. This eliminates the need for an occupant or the like to immediately support a heavy battery when the battery is pulled out from the battery housing. Therefore, the battery can be easily attached and detached.

  According to the sixth aspect of the present invention, the moving direction of the battery when the battery is mounted in the battery housing portion is directed rearward and downward. For this reason, the battery can be mounted in the battery housing portion by utilizing the gravity acting on the battery. Therefore, the battery can be easily attached and detached.

According to the seventh aspect of the present invention, the space below the seat can be opened forward by rotating the seat lower cover about the first rotation axis. For this reason, in an electric vehicle provided with a step floor and a seat lower cover, it is possible to attach and detach the battery in front of the battery housing portion. Therefore, the battery can be easily attached and detached.
Further, since the lower end portion of the lower seat cover is displaced upward, the lower seat cover is retracted from between the step floor and the battery housing portion. For this reason, when taking out a battery from a battery accommodating part, a battery can be mounted on a step floor as it is, without avoiding a battery lower cover. The same applies when a battery is mounted in the battery housing. Therefore, the battery can be easily attached and detached.

  According to the eighth aspect of the invention, the space below the seat can be opened forward by rotating the seat lower cover about the second rotation axis. For this reason, in an electric vehicle provided with a step floor and a seat lower cover, it is possible to attach and detach the battery in front of the battery housing portion. Therefore, the battery can be easily attached and detached.

According to the ninth aspect of the invention, the space below the seat can be opened forward by displacing the lower seat cover upward. For this reason, in an electric vehicle provided with a step floor and a seat lower cover, it is possible to attach and detach the battery in front of the battery housing portion. Therefore, the battery can be easily attached and detached.
Further, since the lower end portion of the lower seat cover is displaced upward, the lower seat cover is retracted from between the step floor and the battery housing portion. For this reason, when taking out a battery from a battery accommodating part, a battery can be mounted on a step floor as it is, without avoiding a battery lower cover. The same applies when a battery is mounted in the battery housing. Therefore, the battery can be easily attached and detached.

According to the invention described in claim 10, the space below the seat can be opened forward by rotating the lower seat cover toward one side in the vehicle width direction when viewed from the front-rear direction. For this reason, in an electric vehicle provided with a step floor and a seat lower cover, it is possible to attach and detach the battery in front of the battery housing portion. Therefore, the battery can be easily attached and detached.
Further, since the lower seat cover is displaced in the vehicle width direction, the lower seat cover is retracted from between the step floor and the battery housing portion. For this reason, when taking out a battery from a battery accommodating part, a battery can be mounted on a step floor as it is, without avoiding a battery lower cover. The same applies when a battery is mounted in the battery housing. Therefore, the battery can be easily attached and detached.

  According to the invention described in claim 11, the battery can be pulled out from the battery housing portion in a state where an occupant or the like stands next to the vehicle. Therefore, the battery can be easily attached and detached.

  According to the invention described in claim 12, since the electric vehicle is a tricycle having a pair of rear wheels, the vehicle is stably parked in an upright state as compared with a two-wheeled vehicle that is parked in a tilted state. Can do. For this reason, attachment and detachment of a battery can be performed easily.

  According to the invention described in claim 13, since the battery housing portion rotates following the front vehicle body around the rolling axis, the positional relationship between the battery housing portion and the front vehicle body varies greatly according to the inclination of the front vehicle body. Can be suppressed. For this reason, it can suppress that the attachment or detachment of a battery is inhibited by the vehicle body frame of the front vehicle body. Therefore, the battery can be easily attached and detached.

It is a left view of the electric vehicle of 1st Embodiment. It is a left view which shows the rear part of the electric vehicle of 1st Embodiment. It is a left view which shows the rear part of the electric vehicle of 1st Embodiment. It is a bottom view which shows the rear part of the electric vehicle of 1st Embodiment. It is a figure which shows schematic structure of the power unit of 1st Embodiment. It is sectional drawing in the VI-VI line of FIG. It is a left view which shows the rear part of the electric vehicle of 2nd Embodiment. It is a left view which shows the rear part of the electric vehicle of 3rd Embodiment. It is the front view which looked at the rear cover periphery in the electric vehicle of 4th Embodiment from the front. It is the front view which looked at the rear cover periphery in the electric vehicle of the modification of 4th Embodiment from the front. It is the front view which looked at the rear cover periphery in the electric vehicle of 5th Embodiment from the front. It is a left view of the electric vehicle of 6th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the front-back, up-down, left-right directions are the same as the front-back, up-down, left-right directions. That is, the up-down direction matches the vertical direction, and the left-right direction matches the vehicle width direction. In the drawings used for the following description, the arrow UP indicates the upper side, the arrow FR indicates the front side, and the arrow LH indicates the left side. Moreover, in the following description, the same code | symbol is attached | subjected to the structure which has the same or similar function. And the description which overlaps those structures may be abbreviate | omitted.

[First Embodiment]
First, the electric vehicle according to the first embodiment will be described with reference to FIGS. 1 to 5. In the present embodiment, a saddle riding type electric tricycle having a pair of rear wheels will be described as an example of the electric vehicle.

FIG. 1 is a left side view of the electric vehicle according to the first embodiment.
As shown in FIG. 1, the electric vehicle 1 according to the first embodiment includes a single front wheel 2, a pair of left and right rear wheels 3, a front vehicle body 10 that supports the front wheels 2 so as to be steerable, and a front vehicle body 10. Electric power is supplied to the front vehicle body cover 30 to be covered, the swing unit 50 that supports the pair of rear wheels 3 and is swingable up and down with respect to the front vehicle body 10, the motor 61 (see FIG. 4) that is a drive source, and the like. The power supply part 100 to supply and the rear cushion 4 (cushion) interposed between the front vehicle body 10 and the swing unit 50 are mainly provided. The electric vehicle 1 is capable of swinging (rolling motion) in the left-right direction with the front vehicle body 10 on which an occupant is riding in a state where the pair of rear wheels 3 are grounded.

  The front vehicle body 10 includes a front wheel steering bar handle 11, an occupant seat 12, a low floor 13, a vehicle body frame 14 that forms the skeleton of the front vehicle body 10, and a front wheel suspension device 15 that suspends the front wheel 2. And comprising. A space 16 between the bar handle 11 and the seat 12 is a straddle space 16 in which an occupant's legs are arranged. The low floor 13 is disposed below the straddling space 16.

  The vehicle body frame 14 includes a head pipe 20 that is provided at a front end portion and tilts backward with respect to the vertical direction, a single front frame 21 that curves obliquely backward and downward from the rear side of the head pipe 20, and then curves backward. A pair of left and right lower frames 22 branching left and right from both sides of the curved portion of the front frame 21 and extending rearward, and a pair of left and right rear frames 23 curved and extended obliquely rearward and upward from the rear ends of the left and right lower frames 22 respectively. (Seat frame) and a pair of left and right cargo bed frames 24 that are curved and extend rearward from the rear end portions of the left and right rear frames 23. A front wheel suspension device 15 is supported on the head pipe 20 so as to be steerable. The bar handle 11 is fixed to the upper end portion of the stem pipe 25 that penetrates the head pipe 20 in the front wheel suspension device 15. The rear end portion of the front frame 21 is coupled to an intermediate portion of a lower cross pipe 27 that extends between the left and right lower frames 22. The pair of rear frames 23 is provided below the seat 12 and is arranged at a predetermined interval in the left-right direction.

  Pivot plates 28 are provided at the rear portions of the left and right lower frames 22. The pair of left and right pivot plates 28 respectively extend rearward from the rear portion of the lower frame 22. A swing unit 50 is connected to the pair of pivot plates 28 so as to be swingable up and down (details will be described later).

  The bar handle 11 is provided with a brake lever 45 adjacent to each of the pair of left and right grips. A rear brake cable (not shown) connected to the pair of left and right rear brakes 5 (see FIG. 3) is connected to the left brake lever 45 at the terminal portion. By operating the left brake lever 45, the rear brake cable is pulled and the pair of left and right rear brakes 5 are operated. The right brake lever 45 is connected to a front brake cable (both not shown) connected to the front brake at the end portion. By operating the right brake lever 45, the front brake cable is pulled to operate the front brake. A parking lock lever 46 is disposed near the bar handle 11. A parking lock cable (not shown) is connected to the parking lock lever 46. The end of the parking lock cable is connected to the rear brake 5. By operating the parking lock lever 46, the parking lock cable is pulled and the rear brake 5 is operated.

  The front body cover 30 includes a front cover 31 that covers the periphery of the head pipe 20 and the front frame 21 from the front, an inner cover 32 that covers the periphery of the head pipe 20 and the front frame 21 from the rear, and a rear of the lower end portion of the inner cover 32. A floor board 33 (step floor) connected to the floor board, left and right floor side covers 34 connected below the left and right side edges of the floor board 33, a rear cover 35 connected to the rear of the floor board 33, and the rear of the left and right floor side covers 34 Left and right rear side covers 37 that extend diagonally upward and rearward at the ends and cover the rear frame 23 and the loading frame 24 from the outside in the left and right direction, and a battery box that extends rearward from the portion of the left and right rear side covers 37 that covers the rear frame 23 and is described later. 102 (see FIG. 2) covering the outer side in the left-right direction. Has a Li box cover 38 (the battery receptacle cover), the.

  The front cover 31 and the inner cover 32 constitute a leg shield that covers the legs of the occupant from the front. The floor board 33 constitutes the low floor 13 together with the left and right lower frames 22. On the floor board 33, the feet of the occupants sitting on the seat 12 are placed. The upper surface of the floor board 33 extends in the front-rear direction below the seat 12. The rear cover 35 extends upward from the rear portion of the floor board 33. The rear cover 35 defines the straddling space 16 from the rear. The rear cover 35 covers the battery box 102 from the front. A specific structure of the rear cover 35 will be described later.

  Between the left and right rear side covers 37, a loading platform 39 on which the article storage box 6 is mounted is provided. From the front end portion of the loading platform 39, a loading platform front wall portion 40 stands. A pair of left and right support columns 41 stands up above the loading platform front wall 40. A wind screen 42 stands from the upper end portion of the front cover 31. A roof 43 is installed between the upper end portion of the wind screen 42 and the upper end portions of the left and right support columns 41.

Here, the rear cover 35 will be described in detail.
FIG. 2 is a left side view showing a rear portion of the electric vehicle according to the first embodiment.
As shown in FIG. 2, the rear cover 35 includes left and right rear floors 35 a continuous to the left and right rear sides of the floor board 33, and a seat lower cover 35 b that supports the rising seat 12 from below between the left and right rear floors 35 a. The rear floor 35a and the lower seat cover 35b are, for example, integrated and fixed to each other. The rear cover 35 is formed separately from the floor board 33 and the rear side cover 37. The rear cover 35 is provided so as to be rotatable around the first rotation axis O <b> 1 with respect to the floor board 33. The first rotation axis O1 extends along the left-right direction. The first rotation axis O1 is provided between, for example, the rear upper end portion of the seat 12 and the load carrier front wall portion 40 as viewed from the left-right direction. In this case, the seat 12 is coupled to the cargo bed front wall portion 40 via a coupling member such as a hinge. The rear cover 35 jumps up so as to displace the lower end portion of the rear cover 35 upward by rotating around the first rotation axis O <b> 1 together with the seat 12.

FIG. 3 is a left side view showing a rear portion of the electric vehicle according to the first embodiment. FIG. 4 is a bottom view showing a rear portion of the electric vehicle according to the first embodiment. FIG. 3 shows a state where a part of the front vehicle body cover 30 and the left rear wheel 3 are removed.
As shown in FIGS. 3 and 4, the swing unit 50 is provided so as to be rotatable about a pivot axis P extending in the left-right direction with respect to the front vehicle body 10, and can swing up and down with respect to the front vehicle body 10. Has been. The swing unit 50 is interposed between a power unit 51 provided between a pair of rear wheels 3, a swing arm 52 supported by a pair of left and right pivot plates 28 of the front vehicle body 10, and the power unit 51 and the swing arm 52. And a swinging mechanism portion 53.

FIG. 5 is a diagram illustrating a schematic configuration of the power unit according to the first embodiment.
As shown in FIG. 5, the power unit 51 supports a pair of rear wheels 3. The power unit 51 includes a unit case 60, a motor 61, a speed reduction mechanism 66, a differential mechanism 71, and a pair of left and right axles 78. The power unit 51 transmits the output of the motor 61 to the pair of axles 78 via the speed reduction mechanism 66 and the differential mechanism 71. The pair of axles 78 is the axle of the rear wheel 3. The left axle 78 is coupled to the left rear wheel 3. The right axle 78 is coupled to the right rear wheel 3. The pair of axles 78 are provided coaxially with each other. The pair of axles 78 extends in the left-right direction and is disposed with the shaft ends facing each other.

  The unit case 60 houses a motor 61, a speed reduction mechanism 66, and a differential mechanism 71. The unit case 60 is provided so as to project the axle 78 to the left and right sides. The unit case 60 supports a pair of axles 78 in a rotatable manner. In the following description, the case where the motor 61 is arranged in the left space inside the unit case 60 and the differential mechanism 71 is arranged in the right space from the motor 61 will be described as an example.

  The motor 61 drives the pair of rear wheels 3. The motor 61 is driven at a variable speed by, for example, VVVF (Variable Voltage Variable Frequency) control. The motor 61 is provided coaxially with the axle 78. The motor 61 includes a cylindrical stator 62 fixed to the unit case 60, a cylindrical rotor 63 coaxial with the stator 62 and disposed inside the stator 62, and a cylindrical shaft 64 coupled to the rotor 63. Prepare. The cylindrical shaft 64 is disposed coaxially with the axle 78 and is extrapolated to the left axle 78 so as to be relatively rotatable.

  The speed reduction mechanism 66 decelerates the drive rotation of the motor 61. The speed reduction mechanism 66 includes a gear 67 formed at the right end of the cylindrical shaft 64, and a large diameter gear 68 and a small diameter gear 69 supported by the unit case 60. The gear 67 and the large diameter gear 68 mesh with each other. The small diameter gear 69 is formed with a smaller diameter than the large diameter gear 68 and rotates integrally with the large diameter gear 68. In the reduction mechanism 66, the rotation of the cylindrical shaft 64 of the motor 61 is reduced by being transmitted to the small diameter gear 69 via the gear 67 and the large diameter gear 68.

  The differential mechanism 71 distributes the driving force of the motor 61 output via the speed reduction mechanism 66 to the left and right axles 78. The differential mechanism 71 is provided coaxially with the axle 78. The differential mechanism 71 includes a differential carrier 72, a pair of side gears 73, a shaft 74, and a pair of pinion gears 75. The differential carrier 72 is disposed so as to surround the shaft ends of the pair of axles 78 facing each other. The differential carrier 72 is externally attached to the axle 78 so as to be rotatable around the axis of the axle 78 with respect to the unit case 60. The differential carrier 72 is formed with a gear 76 that meshes with the small-diameter gear 69 of the speed reduction mechanism 66. As a result, the differential carrier 72 rotates in response to the output of the speed reduction mechanism 66.

  The pair of side gears 73 are bevel gears. The pair of side gears 73 are accommodated in the differential carrier 72. The pair of side gears 73 are fixed to shaft ends of the pair of axles 78 facing each other. The shaft 74 has an axis orthogonal to the axis of the axle 78. The shaft 74 is disposed between the pair of side gears 73, and both ends are supported by the differential carrier 72. The pair of pinion gears 75 are bevel gears that mesh with the pair of side gears 73, respectively. The pair of pinion gears 75 is sandwiched between the pair of side gears 73 and is rotatably supported by the shaft 74.

  In the differential mechanism 71, when the differential carrier 72 rotates in response to the output of the speed reduction mechanism 66, the shaft 74 rotates around the axis line of the axle 78. At this time, the pair of pinion gears 75 revolve around the axis of the axle 78. Here, when the resistance applied to the left and right axles 78 is equal, the pair of side gears 73 and the pair of axles 78 rotate at the same speed without the pair of pinion gears 75 revolving together with the shaft 74 rotating. When there is a difference in resistance applied to the left and right axles 78, the pair of pinion gears 75 rotate as appropriate to cause a difference in rotational speed between the pair of side gears 73 and the pair of axles 78. As described above, the differential mechanism 71 distributes the driving force of the motor 61 to the pair of rear wheels 3 via the axle 78.

  As shown in FIG. 3, a rear brake 5 is disposed between the power unit 51 and each rear wheel 3. For example, the rear brake 5 includes a brake drum formed integrally with the wheel of the rear wheel 3 and a brake shoe supported by the unit case 60 of the power unit 51. The brake shoe is configured to be in sliding contact with the brake drum by pulling at least one of a rear brake cable and a parking lock cable (both not shown).

  The swing arm 52 is disposed in front of the power unit 51. The swing arm 52 is supported by a pair of left and right pivot plates 28 so as to be rotatable around the pivot axis P. The swing arm 52 includes a pair of left and right side arms 80 and a battery support portion 81 that is installed between the pair of side arms 80. The pair of side arms 80 are respectively supported by the pivot plate 28. The side arm 80 extends from a position in front of the pivot axis P to a position in the rear of the pivot axis P. For example, the side arm 80 extends horizontally from the pivot axis P toward the front, and extends slightly inclined downward from the pivot axis P toward the rear (see FIG. 2). At least the vicinity of the pivot axis P of the side arm 80 extends substantially horizontally. For example, the pair of side arms 80 are bent or curved so that the distance between the side arms 80 is narrowed at the rear end portion. The battery support part 81 has an upper surface that extends horizontally, and supports the power supply part 100 from below. The battery support unit 81 covers at least a part of the power supply unit 100 from below.

  The swing mechanism 53 is fixed to the swing arm 52 at the front and is fixed to the power unit 51 at the rear. As a result, the swing mechanism 53, together with the power unit 51 and the swing arm 52, is provided so as to be swingable up and down with respect to the front vehicle body 10 (see FIG. 1). The swing mechanism 53 connects the front vehicle body 10 and the power unit 51 via a swing arm 52 so as to be swingable about a rolling axis R. The rolling axis R extends in a direction orthogonal to the left-right direction at the center of the vehicle body in the left-right direction. For example, the rolling axis R is orthogonal to the pivot axis P. The swing mechanism 53 includes a joint case 90 fixed to the swing arm 52, a joint shaft 91 rotatably supported by the joint case 90 and fixed to the power unit 51, and the relative relationship between the joint case 90 and the joint shaft 91. And a lock mechanism 93 capable of restraining relative rotation of the joint case 90 and the joint shaft 91.

  As shown in FIG. 3, at least a part of the swing mechanism 53 overlaps the rear wheel 3 when viewed from the left-right direction. Specifically, at least a part of the portion of the swinging mechanism portion 53 where the joint case 90 and the joint shaft 91 overlap when viewed from the direction orthogonal to the rolling axis R overlaps with the rear wheel 3 when viewed from the left-right direction. Yes.

  The joint case 90 constitutes the front part of the swing mechanism part 53. The front end portion of the joint case 90 is disposed between the rear end portions of the pair of side arms 80 of the swing arm 52 and fastened to the side arms 80 (see FIG. 4). A cushion connection part 98 (connection part) to which the rear cushion 4 is connected is provided on the upper part of the joint case 90. The cushion connection portion 98 overlaps the rear wheel 3 when viewed from the left-right direction.

  The joint shaft 91 is formed in a cylindrical shape having the rolling axis R as the central axis. The front part of the joint shaft 91 is inserted into the joint case 90. The joint shaft 91 is supported by the joint case 90 so as to be rotatable around the rolling axis R through a bearing that is appropriately arranged. The rear end portion of the joint shaft 91 is coupled to the unit case 60 of the power unit 51. Accordingly, the joint shaft 91 is provided so as not to rotate around the rolling axis R with respect to the power unit 51. For example, the rear end portion of the joint shaft 91 is coupled to the lower surface of the unit case 60.

  Knighthard 92 is interposed between joint case 90 and the front end of joint shaft 91. The nighthard 92 overlaps with the rear wheel 3 when viewed from the left-right direction.

6 is a cross-sectional view taken along line VI-VI in FIG.
As shown in FIG. 6, the knight hart 92 includes a knight hart cam 95 fixed to the joint shaft 91, and a knight hull rubber 96 interposed between the knight hart cam 95 and the inner surface of the joint case 90. A plurality of night hull rubbers 96 are provided and are engaged with the inner surface of the joint case 90, respectively. The knight hull cam 95 has a cam surface 95a facing the knight hull rubber 96 from both sides in the circumferential direction around the rolling axis R. When the knight hull cam 95 tries to rotate around the rolling axis R with respect to the joint case 90, the knight hull rubber 96 presses the knight hull rubber 96 engaged with the inner surface of the joint case 90 to elastically deform the knight hull rubber 96. The knight hull rubber 96 urges the knight hull cam 95 toward the initial position by a restoring force when elastically deforming. As a result, the nighthard 92 biases the front vehicle body 10 in the upright direction via the swing arm 52 fixed to the joint case 90 with respect to the power unit 51 coupled to the joint shaft 91 (see FIG. 3).

  As shown in FIG. 3, the lock mechanism 93 stops the rotation of the joint shaft 91 relative to the joint case 90 in accordance with the operation of the parking lock lever 46 (see FIG. 1). The lock mechanism 93 is provided in the joint case 90. An intermediate portion of a parking lock cable (not shown) is linked to the lock mechanism 93. Accordingly, the lock mechanism 93 operates together with the rear brake 5 when the parking lock lever 46 is operated. The lock mechanism 93 stops the relative rotation of the joint case 90 and the joint shaft 91, thereby stabilizing the parking posture of the front vehicle body 10 via the swing arm 52 fixed to the joint case 90.

  The power supply unit 100 is provided between the front vehicle body 10 and the swing unit 50. The power supply unit 100 is supported by the swing arm 52. The power supply unit 100 includes a PCU (Power Control Unit) 101, a battery box 102 (battery housing unit), a junction box 103, and a down regulator 104.

  The PCU 101 is a control unit including a PDU (Power Drive Unit) that is a motor driver, an ECU (Electric Control Unit) that controls the PDU, and the like. The PCU 101 is disposed in front of the swing mechanism unit 53. The PCU 101 is disposed at a position overlapping the pivot axis P when viewed from the top and bottom. The PCU 101 is supported from below by a swing arm 52. The PCU 101 is placed on the battery support portion 81 (see FIG. 3) of the swing arm 52 and is fixed to the battery support portion 81. Thereby, the PCU 101 is covered from below by the battery support portion 81.

  The battery box 102 accommodates and holds a battery 105 that is a power source of the motor 61 (see FIG. 5). Further, the battery box 102 includes a BMU (Battery Managing Unit) (not shown) that manages charging / discharging of the battery 105 and the like. A pair of battery boxes 102 are provided and are arranged side by side on the lower side of the seat 12. The pair of battery boxes 102 are disposed between the pair of left and right rear frames 23. The pair of battery boxes 102 is placed on the PCU 101 and is disposed in front of the swinging mechanism unit 53. The pair of battery boxes 102 are supported from below by the swing arm 52 via the PCU 101. The battery box 102 is covered from the front by the rear cover 35, and is covered from the left and right sides by the battery box cover 38 (see FIG. 1).

  The battery 105 is formed in a rectangular parallelepiped shape extending in the longitudinal direction. A handle 105a is provided on the surface of the battery 105 facing one side in the longitudinal direction. The battery box 102 has a rectangular parallelepiped shape corresponding to the outer shape of the battery 105. The battery box 102 has a battery insertion / removal opening 102a through which the battery 105 can be inserted / removed. The battery insertion / removal opening 102a is opened forward. The battery box 102 accommodates the battery 105 so that the longitudinal direction of the battery 105 is along the front-rear direction and the handle 105a of the battery 105 faces forward. Thereby, the battery box 102 can draw out the battery 105 toward the front (side).

  As shown in FIG. 2, the battery 105 can be taken out from the position below the seat 12 by flipping up the rear cover 35 and opening the space below the seat 12 in which the battery box 102 is disposed forward. Become. When the battery 105 moves out of the battery box 102 in the front-rear direction and is pulled out, the battery 105 is placed on the floor board 33.

  The junction box 103 collects wiring extending from the battery box 102. A wiring connected to the PCU 101, the down regulator 104, and the like extends from the junction box 103. The junction box 103 is attached to the rear part of the battery box 102.

  As shown in FIG. 3, the down regulator 104 steps down the voltage of the direct current supplied from the battery 105. The down regulator 104 is attached to the rear part of the junction box 103. A plurality of heat radiating fins are erected at the rear portion of the down regulator 104.

  The rear cushion 4 connects the front vehicle body 10 and the swing mechanism 53. The rear cushion 4 is integrally provided with a shock absorber having a compression coil spring and a damper. A lower end portion of the rear cushion 4 is coupled to a cushion connection portion 98 of the joint case 90 in the swing mechanism portion 53. The upper end portion of the rear cushion 4 is connected to the loading frame 24 of the front vehicle body 10.

  As described in detail above, the electric vehicle 1 of the present embodiment includes the front vehicle body 10 that supports the front wheel 2 and includes the vehicle body frame 14 and the seat 12 for seating, and the motor 61 that drives the rear wheel 3. A swing unit 50 that supports the rear wheel 3 and that is pivotable about a pivot axis P that extends in the left-right direction with respect to the front vehicle body 10 is disposed below the seat 12, and is a power source for the motor 61. A battery box 102 that holds the battery 105 so as to be able to be taken out forward from a position below the seat 12.

According to this configuration, the heavy battery 105 can be removed from the vehicle without being lifted to a position higher than the seat 12. Therefore, the work load when attaching / detaching the battery 105 is reduced. Therefore, the battery 105 can be easily attached and detached.
Furthermore, when the loading platform 39 is provided behind the seat 12 as in the present embodiment, the battery 105 can be taken out without lowering the article storage box 6 or the like mounted on the loading platform 39 from the loading platform 39. Therefore, the battery 105 can be easily attached and detached.

  In the present embodiment, the battery box 102 is supported by the swing unit 50. According to this configuration, it is possible to avoid the wiring (not shown) extending from the battery box 102 to the motor 61 straddling the front vehicle body 10 and the swing unit 50 that rotate relative to each other. Thereby, it can suppress that load is applied to wiring and can secure electrical safety. Further, since the swing unit 50 can be attached to the front vehicle body 10 after the battery box 102 is assembled to the swing unit 50, the assembly of the vehicle can be improved.

  In the present embodiment, the electric vehicle 1 includes a battery box cover 38 that covers the battery box 102 from both sides in the left-right direction. According to this configuration, it is possible to suppress flooding in the battery box 102 from the left-right direction. Furthermore, when the battery box 102 is supported by the swing unit 50 as in the present embodiment, the battery box 102 rotates (pivots up and down) around the pivot axis P with respect to the front vehicle body 10. Can be hidden. Therefore, the external appearance of the electric vehicle 1 can be improved.

  In the present embodiment, the battery box 102 is disposed between the pair of rear frames 23. According to this configuration, the rear frame 23 can prevent the object from coming into contact with the battery box 102 from the left-right direction. Therefore, the protection performance of the battery box 102 and the battery 105 can be improved.

  Further, in the present embodiment, the front vehicle body cover 30 includes a floor board 33 that extends in the front-rear direction below the seat 12 and on which an occupant's feet on which the seat 12 sits are placed, and the battery box 102 moves the battery 105 forward. It is formed so that it can be pulled out. According to this configuration, the battery 105 can be pulled out from the battery box 102 along the floor board 33. Thereby, when the battery 105 is pulled out from the battery box 102, it is not necessary for the passenger or the like to immediately support the heavy battery 105. Therefore, the battery 105 can be easily attached and detached.

Further, in the present embodiment, the rear cover 35 is provided so as to be rotatable around a first rotation axis O <b> 1 extending along the left-right direction with respect to the floor board 33 so as to displace the lower end portion upward. According to this configuration, the space below the seat 12 can be opened forward by rotating the rear cover 35 about the first rotation axis O1. For this reason, in the electric vehicle 1 including the floor board 33 and the rear cover 35, the battery 105 can be attached and detached in front of the battery box 102. Therefore, the battery 105 can be easily attached and detached.
Further, since the lower end portion of the rear cover 35 is displaced upward, the rear cover 35 is retracted from between the floor board 33 and the battery box 102. For this reason, when taking out the battery 105 from the battery box 102, the battery 105 can be mounted on the floor board 33 as it is without avoiding the rear cover. The same applies when the battery 105 is attached to the battery box 102. Therefore, the battery 105 can be easily attached and detached.

  Further, in this embodiment, the swing unit 50 swings the front vehicle body 10 and the power unit 51 about the power unit 51 that includes the motor 61 and supports the pair of rear wheels 3 and the rolling axis R that extends in the direction orthogonal to the left-right direction. And a swing mechanism 53 that is movably connected. According to this configuration, since the electric vehicle 1 is a tricycle including the pair of rear wheels 3, the vehicle can be stably parked in an upright state as compared with a two-wheeled vehicle parked in a state where the vehicle is tilted. For this reason, the battery 105 can be easily attached and detached.

  In the present embodiment, the battery box 102 is supported by the swing arm 52 that rotates about the rolling axis R with respect to the power unit 51. According to this configuration, since the battery box 102 rotates following the front vehicle body 10 around the rolling axis R, the positional relationship between the battery box 102 and the front vehicle body 10 varies greatly according to the inclination of the front vehicle body 10. This can be suppressed. For this reason, when the battery 105 is attached / detached, it is possible to suppress the attachment / detachment of the battery 105 by the body frame 14 of the front vehicle body 10 or the like. Therefore, the battery 105 can be easily attached and detached.

[Second Embodiment]
Next, with reference to FIG. 7, the electric vehicle 201 of 2nd Embodiment is demonstrated. The second embodiment is different from the first embodiment in that the rear cover 35 jumps up so as to displace the lower end portion upward by the link mechanism 207. The configurations other than those described below are the same as those in the first embodiment.

FIG. 7 is a left side view showing a rear portion of the electric vehicle according to the second embodiment.
As shown in FIG. 7, the rear cover 35 is connected via a link mechanism 207 to a portion that cannot be displaced with respect to the floor board 33 such as the vehicle body frame 14. The link mechanism 207 is a parallel link mechanism, for example. The link mechanism 207 includes a pair of links 207a extending in parallel with each other when viewed from the left-right direction. The pair of links 207a are members such as stays formed to have the same length. One end of each link 207a is supported by the body frame 14 or the like so as to be rotatable about an axis extending in the left-right direction. The other end of each link 207a is supported by the rear cover 35 or the seat 12 so as to be rotatable about an axis extending in the left-right direction. As a result, the rear cover 35 jumps up together with the seat 12 by the link mechanism 207 so as to displace the lower end portion of the rear cover 35 upward, and opens the space below the seat 12 forward. Then, the battery 105 can be inserted into and removed from the battery box 102.

  Thus, in the present embodiment, the rear cover 35 is connected to the vehicle body frame 14 via the link mechanism 207 and is provided so as to be displaceable upward. According to this configuration, the space below the seat 12 can be opened forward by displacing the rear cover 35 upward. For this reason, there can exist an effect similar to 1st Embodiment.

  In the second embodiment, the link mechanism 207 is a parallel link mechanism, but is not limited thereto, and may be a link mechanism configured by a pair of links having different lengths.

[Third Embodiment]
Next, with reference to FIG. 8, the electric vehicle 301 of 3rd Embodiment is demonstrated. The third embodiment is different from the first embodiment in that the rear cover 35 is rotatably provided so as to displace the upper end portion forward and downward. The configurations other than those described below are the same as those in the first embodiment.

FIG. 8 is a left side view showing the rear part of the electric vehicle according to the third embodiment.
As shown in FIG. 8, the rear cover 35 is provided so as to be rotatable around the second rotation axis O <b> 2 with respect to the floor board 33. The second rotation axis O2 extends along the left-right direction. For example, the second rotation axis O2 is provided between the lower end portion of the rear cover 35 and the rear end portion of the floor board 33 as viewed from the left-right direction. In this case, the rear cover 35 is connected to the floor board 33 via a connecting member such as a hinge. The rear cover 35 is pulled down forward so as to displace the upper end portion of the rear cover 35 forward and downward by rotating around the second rotation axis O2 together with the seat 12. Thereby, the space below the sheet 12 is opened obliquely forward and upward.

  The power supply unit 100 is supported by the swing arm 52 so that the battery insertion / removal port 102a of the battery box 102 faces forward and upward. Thereby, the battery box 102 can be taken out with the battery 105 facing forward and upward. In this case, the battery support portion 81 of the swing arm 52 is formed so that the upper surface extends downward as it goes from the front end toward the rear end. The battery 105 is taken forward from a position below the seat 12 by pulling the rear cover 35 forward to open the space in which the battery box 102 is disposed obliquely forward and upward.

  Thus, in this embodiment, the battery box 102 is formed so that the battery 105 can be pulled out forward and upward. According to this configuration, the moving direction of the battery 105 when the battery 105 is attached to the battery box 102 is directed backward and downward. For this reason, the battery 105 can be attached to the battery box 102 by utilizing the gravity acting on the battery 105. Therefore, the battery 105 can be easily attached and detached.

  Further, the rear cover 35 is provided so as to be rotatable around a second rotation axis O2 extending along the left-right direction with respect to the floor board 33 so as to displace the upper end portion downward. According to this configuration, the space below the seat 12 can be opened forward by rotating the rear cover 35 about the second rotation axis O2. For this reason, in the electric vehicle 301 including the floor board 33 and the rear cover 35, the battery 105 can be attached and detached in front of the battery box 102. Therefore, the battery 105 can be easily attached and detached.

  In the third embodiment, the rear cover 35 is configured to rotate together with the seat 12. However, the present invention is not limited to this, and the rear cover 35 rotates about the second rotation axis O2 independently of the seat 12. It may be configured to.

[Fourth Embodiment]
Next, with reference to FIG. 9, the electric vehicle 401 of 4th Embodiment is demonstrated. The fourth embodiment is different from the first embodiment in that the rear cover 435 is provided so as to be rotatable toward one side in the left-right direction when viewed from the front-rear direction. The configurations other than those described below are the same as those in the first embodiment.

FIG. 9 is a front view of the vicinity of the rear cover in the electric vehicle according to the fourth embodiment as viewed from the front.
As shown in FIG. 9, a part of the rear cover 435 is provided to be rotatable about the third rotation axis O <b> 3 with respect to the floor board 33. The third rotation axis O3 extends in a direction intersecting the left-right direction. For example, the third rotation axis O3 is provided at the boundary between the left rear floor 435a (not shown) and the under-seat cover 435b. In this case, the under-seat cover 435b is formed separately from the rear floor 435a and is connected to the left rear floor 435a via a connecting member such as a hinge. The under-seat cover 435b rotates around the third rotation axis O3 together with the seat 12, thereby rotating in one of the left and right directions (left in the illustrated example) with respect to the floor board 33 when viewed from the front-rear direction. . Thereby, the space below the seat 12 is opened forward, and the battery 105 can be inserted into and removed from the battery box 102.

As described above, in the present embodiment, the rear cover 435 is provided so as to be rotatable toward one side in the left-right direction with respect to the floor board 33 when viewed from the front-rear direction. According to this configuration, the space below the seat 12 can be opened forward by rotating the rear cover 435 toward one side in the left-right direction when viewed from the front-rear direction. For this reason, in the electric vehicle 401 including the floor board 33 and the rear cover 435, the battery 105 can be attached and detached in front of the battery box 102. Therefore, the battery 105 can be easily attached and detached.
Further, since the rear cover 435 is displaced in the left-right direction, the rear cover 435 is retracted from between the floor board 33 and the battery box 102. For this reason, when taking out the battery 105 from the battery box 102, the battery 105 can be mounted on the floor board 33 as it is without avoiding the rear cover 435. The same applies when the battery 105 is attached to the battery box 102. Therefore, the battery 105 can be easily attached and detached.

  In the fourth embodiment, only the lower seat cover 435b of the rear cover 435 is rotatably provided. However, the present invention is not limited to this. The under-seat cover 435b may be rotatably provided together with the rear floor 435a.

  In the fourth embodiment, the rear cover 435 is provided so as to be rotatable together with the seat 12, but is not limited thereto. That is, as shown in FIG. 10, the rear cover 435 may be provided so as to be rotatable independently of the seat 12. As shown in FIG. 10, when the rear cover 435 rotates in the left-right direction independently of the seat 12, the seat 12 is supported by the vehicle body frame 14.

[Fifth Embodiment]
Next, with reference to FIG. 11, the electric vehicle 501 of 5th Embodiment is demonstrated. In the fifth embodiment, the first portion of the rear cover 535 is provided so as to be rotatable leftward as viewed from the front-rear direction, and the second portion of the rear cover 535 is provided so as to be rotatable rightward. This is different from the first embodiment. The configurations other than those described below are the same as those in the first embodiment.

FIG. 11: is the front view which looked at the rear cover periphery in the electric vehicle of 5th Embodiment from the front.
As shown in FIG. 11, the under-seat cover 535b is divided into a pair of left and right. The lower seat cover 535b is divided along a dividing line orthogonal to the left and right center line of the vehicle body when viewed from the front-rear direction. The left half portion of the lower seat cover 535b is provided to be rotatable about the fourth rotation axis O4 with respect to the floor board 33 independently of the seat 12. The fourth rotation axis O4 extends in a direction intersecting the left-right direction. For example, the fourth rotation axis O4 is provided at the boundary between the left rear floor 535a and the under-seat cover 535b. The right half of the lower seat cover 535b is provided so as to be rotatable about the fifth rotation axis O5 with respect to the floor board 33 independently of the seat 12. The fifth rotation axis O5 extends in a direction intersecting the left-right direction. For example, the fifth rotation axis O5 is provided at the boundary between the right rear floor 535a and the lower seat cover 535b. For example, the fourth rotation axis O4 and the fifth rotation axis O5 are provided symmetrically.

  The left half portion of the lower seat cover 535b rotates about the fourth rotation axis O4, thereby rotating leftward with respect to the floor board 33 when viewed from the front-rear direction. The right half portion of the lower seat cover 535b rotates about the fifth rotation axis O5, thereby rotating rightward with respect to the floor board 33 when viewed from the front-rear direction. Thereby, the space below the seat 12 is opened forward, and the battery 105 can be inserted into and removed from the battery box 102.

  Thus, in this embodiment, the rear cover 535 is provided so as to be rotatable toward both sides in the left-right direction with respect to the floor board 33 when viewed from the front-rear direction. According to this configuration, the space below the seat 12 can be opened forward by rotating the rear cover 535 toward both sides in the left-right direction when viewed from the front-rear direction. For this reason, there can exist an effect similar to 4th Embodiment.

  In the fifth embodiment, only the lower seat cover 535b of the rear cover 535 is rotatably provided. However, the present invention is not limited to this. The under-seat cover 535b may be provided so as to be rotatable together with the rear floor 535a.

  In the fifth embodiment, the left half and the right half of the lower seat cover 535b are provided so as to be rotatable independently of the seat 12, but the present invention is not limited to this. One of the left half part and the right half part of the seat lower cover 535b may be provided so as to be rotatable together with the seat 12.

[Sixth Embodiment]
Next, with reference to FIG. 12, the electric vehicle 601 of 6th Embodiment is demonstrated. The third embodiment is different from the first embodiment in that the rear cushion 604 is interposed between members that swing around the rolling axis R with respect to the front vehicle body 610. The configurations other than those described below are the same as those in the first embodiment.

FIG. 12 is a left side view of the electric vehicle according to the sixth embodiment.
As shown in FIG. 12, the electric vehicle 601 of the sixth embodiment supports a front vehicle body 610 that supports the front wheel 2 so as to be steerable, a front vehicle body cover 630 that covers the front vehicle body 610, and a pair of rear wheels 3. It mainly includes a rear vehicle body 650, a swing mechanism 653 that connects the front vehicle body 610 and the rear vehicle body 650, and the power supply unit 100. The front vehicle body 610 has a configuration in which the loading frame 24 is omitted from the front vehicle body 10 (see FIG. 1) of the first embodiment. The front vehicle body cover 630 has a configuration in which a portion that covers the load carrier frame 24 from the front vehicle body cover 30 (see FIG. 1) of the first embodiment and the battery box cover 38 are omitted.

  The rear vehicle body 650 includes a rear vehicle body frame 654 forming a skeleton of the rear vehicle body 650, a swing unit 658 connected to the rear vehicle body frame 654 so as to be swingable up and down, and a rear vehicle body frame 654 and the swing unit 658. An intervening rear cushion 604.

  The rear vehicle body frame 654 includes a front cross member 655 extending in the left-right direction at the front portion of the rear vehicle body 650, a pair of left and right side frames 656 extending rearward from the left and right ends of the front cross member 655, and extending in the left-right direction. A rear cross member 657 coupled to the rear ends of the pair of side frames 656. The side frame 656 is provided in front of the rear wheel 3 when viewed from the left and right direction, and is bent upward from the rear end of the first portion 656a. The first portion 656a extends rearward from the coupling portion with the front cross member 655. And a third portion 656c that is provided above the rear wheel 3 when viewed from the left-right direction and extends backward from the upper end of the second portion 656b. On the upper part of the third portion 656c of the left and right side frames 656, a loading platform 39 on which articles are mounted is provided.

  The swing unit 658 is supported by the rear body frame 654 so as to be swingable up and down. The swing unit 658 includes a power unit 51 and a swing arm 652.

  The swing arm 652 is disposed between the first portions 656a of the pair of left and right side frames 656. The swing arm 652 is connected to the rear vehicle body frame 654 at the front portion, and is fixed to the power unit 51 at the rear portion. The swing arm 652 is supported by a pair of left and right side frames 656 so as to be rotatable about a pivot axis P extending in the left-right direction. The swing arm 652 includes a pair of left and right side arms 680 and a battery support portion (not shown) provided between the pair of side arms 680.

  The pair of side arms 680 are respectively supported by the pair of side frames 656 of the rear body frame 654. The side arm 680 extends from a position ahead of the pivot axis P to a position behind the pivot axis P. At least the vicinity of the pivot axis P of the side arm 680 extends substantially horizontally. The rear ends of the pair of side arms 680 are fixed to the power unit 51, respectively. For example, the rear ends of the pair of side arms 680 are coupled to the unit case 60 (see FIG. 2) of the power unit 51, respectively. The battery support portion is configured similarly to the battery support portion 81 (see FIG. 3) of the first embodiment. That is, the battery support unit supports the power supply unit 100 from below. The battery support part covers at least a part of the power supply part 100 from below.

  The rear cushion 604 connects the rear body frame 654 and the swing unit 658. The lower end of the rear cushion 604 is connected to the unit case 60 of the power unit 51. Note that the lower end of the rear cushion 604 may be coupled to the swing arm 652. An upper end portion of the rear cushion 4 is connected to a rear cross member 657 of the rear vehicle body frame 654.

  The swing mechanism portion 653 is fixed to the lower portion of the front vehicle body 610 at the front portion, and is connected to the front portion of the rear vehicle body 650 at the rear portion. The swing mechanism 653 includes a joint case 90, a joint shaft 91, a Knighthard 92, and a lock mechanism 93. The joint case 90 is disposed behind the joint shaft 91 and is fixed to the front cross member 655 of the rear body frame 654. The front end portion of the joint shaft 91 is fixed to the lower portion of the front frame 21 of the front vehicle body 610. Accordingly, the swing mechanism 653 connects the front vehicle body 610 and the rear vehicle body 650 so as to be swingable about the rolling axis R.

The power supply unit 100 is provided between the front vehicle body 610 and the rear vehicle body 650.
The PCU 101 is supported from below by a swing arm 652. The PCU 101 is placed on the battery support portion of the swing arm 652 and is fixed to the battery support portion. Thereby, PCU101 is covered from the downward direction by the battery support part.

  The battery box 102 is disposed below the seat 12. The battery box 102 is placed on the PCU 101. The battery box 102 is supported from below by a swing arm 652 via the PCU 101. The battery insertion / removal opening 102a is open toward either the left or right (left in the illustrated example). The battery box 102 accommodates the battery 105 so that the longitudinal direction of the battery 105 is along the left-right direction, and the handle 105a of the battery 105 faces the opening direction of the battery insertion / removal port 102a (leftward in the illustrated example). . Thereby, the battery box 102 can draw out the battery 105 toward the left (side).

  Thus, in this embodiment, the battery box 102 is formed so that the battery 105 can be pulled out to the left. According to this configuration, the battery 105 can be pulled out from the battery box 102 in a state where an occupant or the like is standing beside the vehicle. Therefore, the battery 105 can be easily attached and detached.

The present invention is not limited to the above-described embodiment described with reference to the drawings, and various modifications can be considered within the technical scope thereof.
For example, in each of the above embodiments, a roofed saddle riding type electric tricycle having a single front wheel 2 and a pair of rear wheels 3 has been described as an example of the electric vehicle. However, the present invention is not limited to this. The present invention is also applicable to an electric tricycle without a roof, a motorcycle, a pair of front wheels, and an electric tricycle having a single front wheel.

  Moreover, in the said embodiment, although the battery box 102 is comprised so that the battery 105 can be taken out forward or left, it is not limited to this. The battery box 102 may hold the battery 105 so that the battery 105 can be taken out to the right, or hold the battery 105 so that it can be taken out diagonally forward left or diagonally forward right.

  Moreover, in the said embodiment, although the termination | terminus of the parking lock cable is connected to the rear brake 5, it is not limited to this. The terminal end of the parking lock cable may be connected to a mechanism that locks the gear in the power unit to stop the rotation of the rear wheel 3, for example.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described embodiments and modifications may be appropriately combined. Good.

  1, 201, 301, 401, 501, 601 ... electric vehicle 2 ... front wheel 3 ... rear wheel 10,610 ... front vehicle body 14 ... body frame 23 ... rear frame (seat frame) 30 ... front vehicle body cover 33 ... floor board (step) Floor) 35, 435, 535 ... Rear cover 38 ... Battery box cover (battery housing cover) 50, 658 ... Swing unit 51 ... Power unit 53, 653 ... Swing mechanism 61 ... Motor 102 ... Battery box (battery housing) 105 ... Battery 207 ... Link mechanism O1 ... First rotation axis O2 ... Second rotation axis P ... Pivot axis R ... Rolling axis

Claims (13)

Front wheel (2),
The rear wheel (3),
A front vehicle body (10, 610) that supports the front wheel (2) and has a vehicle body frame (14) and a seat (12) for sitting;
A pivot axis (P) having a motor (61) for driving the rear wheel (3), supporting the rear wheel (3) and extending in the vehicle width direction with respect to the front vehicle body (10, 610). ) A swing unit (50, 658) provided to be rotatable around;
A battery housing portion (102) disposed below the seat (12) and holding the battery (105) as a power source of the motor (61) so that the battery (105) can be taken out from a position below the seat (12). )When,
An electric vehicle comprising: The battery accommodating portion (102) is supported by the swing unit (50, 658).
The electric vehicle according to claim 1. A battery housing cover (38) that covers the battery housing portion (102) from at least one of the vehicle width directions;
The electric vehicle according to claim 1, wherein the vehicle is an electric vehicle. The vehicle body frame (14) includes a pair of seat frames (23) that are provided below the seat (12) and are spaced apart from each other in the vehicle width direction.
The battery accommodating portion (102) is disposed between the pair of seat frames (23).
The electrically powered vehicle according to any one of claims 1 to 3, wherein the vehicle is an electric vehicle. A front vehicle body cover (30) covering the front vehicle body (10);
The front vehicle body cover (30) includes a step floor (33) that extends in the vehicle front-rear direction below the seat (12) and on which a passenger's foot on which the seat (12) is seated is placed.
The battery accommodating part (102) is formed so that the battery (105) can be pulled out forward.
The electric vehicle according to any one of claims 1 to 4, wherein the vehicle is an electric vehicle. The battery housing (102) is formed so that the battery (105) can be pulled out forward and upward.
The electric vehicle according to any one of claims 1 to 4, wherein the vehicle is an electric vehicle. A front vehicle body cover (30) covering the front vehicle body (10);
The front body cover (30)
A step floor (33) that extends in the vehicle front-rear direction below the seat (12) and on which a passenger's foot on which the seat (12) is seated is placed;
A rear cover (35) that extends upward from the rear of the step floor (33), defines a space in which the occupant's legs are disposed from the rear, and covers the battery housing (102) from the front;
With
The rear cover (35) is provided to be rotatable about a first rotation axis (O1) extending along the vehicle width direction with respect to the step floor (33) so as to displace the lower end portion upward. Yes,
The electric vehicle according to claim 5 or claim 6, wherein A front vehicle body cover (30) covering the front vehicle body (10);
The front body cover (30)
A step floor (33) that extends in the vehicle front-rear direction below the seat (12) and on which a foot of an occupant seated on the seat (12) is placed;
A rear cover (35) that extends upward from the rear of the step floor (33), defines a space in which the occupant's legs are disposed from the rear, and covers the battery housing (102) from the front;
With
The rear cover (35) is provided so as to be rotatable around a second rotation axis (O2) extending along the vehicle width direction with respect to the step floor (33) so as to displace the upper end portion downward. Being
The electric vehicle according to claim 5 or claim 6, wherein A front vehicle body cover (30) covering the front vehicle body (10);
The front body cover (30)
A step floor (33) that extends in the vehicle front-rear direction below the seat (12) and on which a foot of an occupant sitting on the seat (12) is placed;
A rear cover (35) that extends upward from the rear of the step floor (33), defines a space in which the occupant's legs are disposed from the rear, and covers the battery housing (102) from the front;
With
The rear cover (35) is connected to the vehicle body frame (14) via a link mechanism (207), and is provided so as to be displaceable upward.
The electric vehicle according to claim 5 or claim 6, wherein A front vehicle body cover (30) covering the front vehicle body (10);
The front body cover (30)
A step floor (33) that extends in the vehicle front-rear direction below the seat (12) and on which a foot of an occupant seated on the seat (12) is placed;
A rear cover (435, 535) that extends upward from the rear portion of the step floor (33), demarcates a space in which the occupant's legs are disposed from the rear, and covers the battery housing portion (102) from the front;
With
The rear cover (435, 535) is provided to be rotatable toward at least one of the vehicle width direction with respect to the step floor (33) when viewed from the vehicle front-rear direction.
The electric vehicle according to claim 5 or claim 6, wherein The battery accommodating portion (102) is formed so that the battery (105) can be pulled out toward one side in the vehicle width direction.
The electric vehicle according to any one of claims 1 to 4, wherein the vehicle is an electric vehicle. A pair of the rear wheels (3) are provided,
The swing unit (50, 658)
A power unit (51) including the motor (61) and supporting the pair of rear wheels (3);
A swing mechanism (53, 653) for connecting the front vehicle body (10, 610) and the power unit (51) so as to be swingable about a rolling axis (R) extending in a direction perpendicular to the vehicle width direction;
Comprising
The electric vehicle according to any one of claims 1 to 11, wherein the vehicle is an electric vehicle. The battery accommodating portion (102) is supported at a location that rotates about the rolling axis (R) with respect to the power unit (51).
The electric vehicle according to claim 12.

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