JP5528905B2 - Saddle riding type electric vehicle - Google Patents

Description

  The present invention provides a swing arm that is supported by a vehicle body frame so as to be swingable up and down, an electric motor that exerts power for rotationally driving a rear wheel that is pivotally supported at a rear portion of the swing arm, and power is supplied to the electric motor. The present invention relates to a saddle-ride type electric vehicle in which a battery to be operated and a control unit for controlling the electric motor are disposed.

  Patent Document 1 discloses a motorcycle in which an electric motor is operated by electric power supplied from a battery and a rear wheel is driven by a driving force exhibited by the electric motor.

JP 2008-221976 A

  In the motorcycle disclosed in the above-mentioned Patent Document 1, since the electrical components of the drive system are arranged as a unit by being arranged on the swing arm, there is an advantage that the maintenance and wiring structure are simplified, but it is relatively heavy. Since a battery, an electric motor, and a control unit are provided on the swing arm, the thickness of the swing arm tends to increase from the viewpoint of increasing rigidity, which may increase the weight of the swing arm.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a saddle-ride type electric vehicle capable of reducing the weight of a swing arm while maintaining excellent maintainability and simplification of wiring. To do.

In order to achieve the above object, the present invention provides an electric motor that exerts power for rotationally driving a rear wheel pivotally supported on a rear portion of a swing arm on a swing arm that is supported by a vehicle body frame so as to swing up and down. In a saddle-ride type electric vehicle in which a battery that supplies electric power to the electric motor and a control unit that controls the electric motor are disposed, the swing arm is separated from the electric motor and the control unit. A partition that extends in the front-rear direction of the vehicle body in front of the rear wheel to dispose the battery, a battery housing part in which a part of the outer periphery is formed by the partition wall, and a battery housing part that includes the partition wall as a part of the component. from the left and right directions either end has an arm portion which is extended to the left or right one side how the rear wheel, the opening for exposing the terminals provided in the battery before That provided in the partition wall and the first feature.

  In addition to the configuration of the first feature, the present invention has a second feature that the opening is provided in an upper part or a lower part of the partition wall.

The present invention, in addition to the first or second feature, the control unit is mounted so as to overlap a part of the battery in a side view the outer surface of the arm portion, the arm portion and the arm portion A third feature is that a cover member that covers the attached control unit from the outside is detachably attached to the arm portion.

  According to the present invention, in addition to the configuration of the third feature, the plurality of batteries are individually accommodated in a plurality of storage chambers partitioned by a partition wall provided integrally with the battery storage portion, and the opening is the A fourth feature is that the partition wall is provided so as to communicate with each of the storage chambers individually.

  According to the present invention, in addition to the configuration of the third or fourth feature, a lid member that covers the battery housing portion from above is formed on the battery housing portion that is opened upward, and the battery in the battery housing portion is provided. It is a fifth feature that it is detachably attached so as to abut on the surface.

  Furthermore, in addition to the configuration of the first feature, the present invention further includes the electric motor disposed on one side of a vehicle body center line extending in the front-rear direction, and a part of the electric motor being on the side of the rear wheel. A sixth feature is that a battery is disposed on the left and right other side of the vehicle body center line.

  The high voltage battery 7 of the embodiment corresponds to the battery of the present invention, and the front cover 38 of the embodiment corresponds to the cover member of the present invention.

According to the first feature of the present invention, an electric motor, a battery, and a control unit are disposed on the swing arm, so that the power unit including the electric motor can be assembled in advance before being assembled to the vehicle body frame. It is possible to improve maintainability, simplify maintenance, and simplify the wiring. The swing arm is separated from the electric motor and control unit, and the battery is placed in front of the rear wheel in front of the rear wheel to place the battery. A partition wall extending in the direction, a battery housing part in which a part of the outer periphery is formed of a partition wall, and from the left or right end of the battery housing part to the left or right side of the rear wheel with the partition wall as a component this increase as they may have a an arm portion is extended, the rigidity of the swing arm with a partition wall without providing a special member for improving rigidity It is, it is possible to reduce the members provided for supporting the battery. Moreover, there is a possibility that the simplification of the wiring may be hindered by the presence of the partition, but since the opening for facing the terminal provided in the battery is provided in the partition, the influence of the partition on the simplification of the wiring can be reduced. it can.

  Further, according to the second feature of the present invention, since the opening is provided in the upper part or the lower part of the partition wall, the influence on the layout of the partition wall itself or a member disposed in the vicinity of the partition wall can be reduced.

According to a third aspect of the present invention, the outer surface of the part and the arm part of the components of the septum wall, because the way the control unit overlaps with a portion of the battery in a side view is attached, the control unit from the battery Can be shortened. In addition, the cover member that covers the arm part and the control unit from the outside can be detachably attached to the arm part, so that the cover member can be removed without worrying about wiring during maintenance, and control is performed with the cover member removed. Since the unit is exposed to the outside, the maintainability can be further improved.

  According to the fourth feature of the present invention, while a plurality of batteries are individually housed in a plurality of housing chambers partitioned by a partition wall provided integrally with the battery housing portion, a large amount of power can be secured. The partition wall can increase the rigidity of the swing arm, and the partition wall is provided with an opening that communicates with each of the storage chambers. Therefore, the routing between the battery and the control unit can be improved.

  According to the fifth aspect of the present invention, the battery housing portion is formed to open upward, and the lid member that covers the battery housing portion from above is attached to and detached from the battery housing portion so as to contact the battery in the battery housing portion. Since attachment is possible, the number of parts of the dedicated member that supports the battery can be reduced while improving the maintainability of the battery.

Furthermore, according to the sixth aspect of the present invention, the electric motor is arranged on one side of the vehicle body center line and the battery is arranged on the left and right sides of the vehicle body center line. By arranging them on the left and right sides of the vehicle body center line, the right and left weight balance can be improved. In addition, since a part of the battery is located on the side of the rear wheel, it is not necessary to arrange the rear wheel further rearward in order to avoid buffering with the battery, and the longitudinal length of the saddle-ride type electric vehicle is large. Can be avoided.

1 is a side view of an electric motorcycle according to a first embodiment. It is a principal part enlarged view of FIG. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 2 in a state where the main stand is rotated to the storage position. It is sectional drawing corresponding to FIG. 3 of 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  The first embodiment of the present invention will be described with reference to FIGS. 1 to 3. First, in FIG. 1, an electric motorcycle which is a saddle-ride type electric vehicle is a scooter type electric motorcycle having a low floor 25. There is an electric motor 6 that exerts power for driving the axle 5 of the rear wheel WR to rotate, a high voltage for supplying electric power to the electric motor 6, for example, a high voltage battery 7 of 72V, and the electric motor 6 are controlled. The control unit 8 is disposed on a swing arm 9A that pivotally supports the axle 5 of the rear wheel WR at the rear, and a main stand 10 is rotatably supported at the lower front side of the swing arm 9A.

  A body frame F of this electric motorcycle includes a head pipe 13 that supports a front fork 11 that pivotally supports a front wheel WF, and a bar-shaped steering handle 12 that is coupled to the upper portion of the front fork 11, and the head pipe 13. A down frame 14 extending rearwardly downward from the pipe 13, a pair of left and right underframes 15 extending forwardly with the front ends fixed to both lower sides of the downframe 14, and a pair of left and right integrally connected to the rear ends of the underframes 15 The rear frame 16 includes a front inclined portion 16a extending rearwardly from the rear end of the underframe 15 and a rear inclined portion 16b extending rearwardly downward from the rear end of the front inclined portion 16a. The rear portions of both rear frames 16 are connected to each other.

  First brackets 17 are provided at lower ends of the front inclined portions 16a in the rear frames 16. The front portion of the swing arm 9A is supported on the first bracket 17 through a link mechanism 18 so as to be swingable up and down, and the axle 5 of the rear wheel WR disposed on the right side of the rear portion of the swing arm 9A is provided. It is pivotally supported at the rear part of the swing arm 9A. A rear cushion unit 19 is provided between the rear part of the left rear frame 16 and the rear part of the swing arm 9A.

  A storage box 20 is disposed above the swing arm 9A so as to be supported by the two rear frames 16. The storage box 20 is a tandem type that is rotatably supported at the front portion of the storage box 20. Covered with the riding seat 21.

  The vehicle body frame F is covered with a vehicle body cover 22 made of synthetic resin. The vehicle body cover 22 covers a front cover 23 that covers the head pipe 13 from the front, and a foot of an occupant sitting on the riding seat 21. A leg shield 24 connected to the front cover 23 so as to cover from the front, a low floor 25 connected to the lower part of the leg shield 24 for placing a foot of an occupant sitting on the riding seat 21, and both the under frames 15 The pair of left and right floor side covers 26 hanging from both sides of the low floor floor 25 so as to cover the upper part of the low floor 25 and the low floor floor 25 and the both floor side covers 26. And a side cover 27 that covers the storage box 20 from the front and both sides.

  A low voltage battery 30 for supplying a low voltage, for example, 12V power to auxiliary machines such as the headlamp 28 and the tail lamp 29 is supported between the underframes 15... The floor floor 25 and the floor side covers 26 are covered from above and from the sides.

Referring to FIGS. 2 and 3 together, the swing arm 9A includes a battery housing part 33 disposed in front of the rear wheel WR and the rear wheel from one end of the battery housing part 33 in the left-right direction. A swing arm main body 35 having an arm part 34 extending to one of the left and right sides of the WR, a gear case 36 coupled to the rear part of the arm part 34 from the rear wheel side, and the rear part of the arm part 34 The rear cover 37 is coupled to the rear wheel WR from the opposite side, and the front cover 38 is coupled to the front portion of the arm portion 34 in front of the rear cover 37 from the opposite side of the battery housing portion 33. In this embodiment, the arm portion 34 extends from the left end portion of the battery housing portion 33 to the left side of the rear wheel WR.

  An axle 5 of the rear wheel WR is pivotally supported at the rear part of the swing arm 9A, and an electric motor 6 and a power transmission means 39 for transmitting power from the electric motor 6 to the axle 5 are accommodated. The power transmission means 39 includes a reduction gear train 40 interposed between the electric motor 6 and the axle 5 and a centrifugal clutch 41 interposed between the electric motor 6 and the reduction gear train 40.

  The electric motor 6 is accommodated between a rear portion of the arm portion 34 in the swing arm 9A and a motor cover 42 that is disposed inward of the rear cover 37 and coupled to the rear portion of the arm portion 34, The reduction gear train 40 is accommodated between the rear portion of the arm portion 34 and the gear case 36, and the centrifugal clutch 41 is disposed between the motor cover 42 and the rear cover 37 and accommodated in the rear portion of the swing arm 9A. Is done.

  The axle 5 of the rear wheel WR passes through the rear portion of the gear case 36 in a rotatable and airtight manner, and is rotatably supported by the gear case 36 and the arm portion 34. In front of the axle 5, a transmission shaft 43 having an axis parallel to the axle 5 is disposed so as to penetrate the arm portion 34 in an airtight and rotatable manner. The gear case 36 and the rear cover 37 are rotatably supported, and the intermediate portion of the transmission shaft 43 is rotatably supported by the arm portion 34.

  The electric motor 6 includes a stator 44 fixed to the arm portion 34 and a rotor 46 fixed to a cylindrical motor shaft 45 coaxially surrounding the transmission shaft 43 and coaxially disposed in the stator 44. The motor shaft 45 is rotatably supported by the motor cover 42 and is relatively rotatably supported by the transmission shaft 43.

  In the centrifugal clutch 41, a drive plate 47 fixed to the motor shaft 45, a plurality of centrifugal weights 48 supported at a plurality of locations of the drive plate 47, and the centrifugal weights 48 are frictionally engaged. And a clutch spring 50 provided between the centrifugal weights 48 and the drive plate 47, and the clutch outer 49 is fixed to the transmission shaft 43.

  When the centrifugal force acting on the centrifugal weights 48 in response to the rotation of the motor shaft 45 and the drive plate 47 exceeds the spring urging force of the clutch springs 50, the centrifugal weights 48 ... By frictionally engaging the inner periphery of the clutch outer 49, the motor shaft 45 and the transmission shaft 43 are brought into a power transmission state.

  The reduction gear train 40 includes a drive gear 51 fixed to the transmission shaft 43, a first idle gear 87 that meshes with the drive gear 51, a second idle gear 88 that rotates together with the first idle gear 87, The idle shaft 89 is composed of a driven gear 52 fixed to the axle 5 and meshed with the drive gear 51, and the idle shaft 89 to which the first and second idle gears 87 and 88 are fixed is disposed between the axle 5 and the transmission shaft 43. Arranged in parallel with the shafts 5 and 43, both end portions of the idle shaft 89 are rotatably supported by the arm portion 34 and the gear case 36.

  The battery accommodating portion 33 includes a rectangular side wall 53 for accommodating the high-voltage batteries 7 arranged in front of the rear wheel WR separately from the electric motor 6 and the control unit 8; The bottom wall 54 integrally connected to the lower portion of the side wall 53 is formed in a box shape opened upward, and the left side wall portion of the side wall 53 includes the electric motor 6 and the control unit 8. Functions as a partition wall 53a for partitioning and arranging the high-voltage batteries 7, and this partition wall 53a is provided integrally with the swing arm 9A in front of the rear wheel WR. The arm part 34 extends rearward from the battery housing part 33 with the partition wall 53a, which is the left side wall part of the side wall 53, as a part of the constituent elements.

  The battery housing portion 33 is integrally provided with a partition wall 57 that partitions the battery housing portion 33 into a plurality of housing chambers. In this embodiment, the battery housing portion 33 has two front and rear portions. A partition wall 57 that is partitioned into certain first and second storage chambers 55 and 56 is provided integrally with the battery housing portion 33 so as to extend in the vehicle width direction at a middle portion in the front-rear direction of the battery housing portion 33. The high voltage batteries 7 and 7 are individually accommodated in the second storage chambers 55 and 56 so that the longitudinal direction thereof extends along the vehicle width direction.

  In addition, the electric motor 6 is arranged on the left and right sides (left side in this embodiment) of the vehicle body center line CL extending in the front-rear direction, whereas the first and second accommodations formed in the battery accommodation part 33 Individual center-of-gravity positions G1 and G2 of the high-voltage batteries 7 and 7 individually accommodated in the chambers 55 and 56 are arranged on the left and right other sides (right side in this embodiment) of the vehicle body center line CL.

  The control unit 8 is attached to the outer surface of the partition wall 53a constituting a part of the arm portion 34 by a plurality of screw members 58, 58... It arrange | positions in the position which overlaps with a part of high voltage battery 7 ....

  Further, a pair of openings 61, 61 for facing a pair of terminals 59, 60, which are provided in pairs to the high-voltage batteries 7 ... individually communicate with the first and second storage chambers 55, 56, respectively. The pair of openings 61 are provided at the upper or lower portion of the partition wall 53a, in this embodiment, at the lower portion of the partition wall 53a.

  The control unit 8 attached to the partition wall 53a and the front part of the arm part 34 are covered from the outside by the front cover 38, and the front cover 38 has a plurality of parts on the arm part 34. The screw members 62 are detachably attached.

  Further, a lid member 65 that covers the battery accommodating portion 33 from above is detachably attached to the battery accommodating portion 33, and an inner surface 65a of the lid member 65 has a battery accommodating portion 33 as shown in FIG. It is formed so as to come into contact with the high-voltage batteries 7.

  The main stand 10 is disposed below the partition wall 57 and is rotatably supported by the bottom wall 54 of the battery housing portion 33. Thus, a pair of second brackets 66, 66 extending in the front-rear direction intersecting the partition wall 57 in a plan view on the bottom wall 54 of the battery housing portion 33 rotatably supports the main stand 10. In this way, it is integrally provided so as to protrude downward from the lower surface of the bottom wall 54.

  The main stand 10 includes a stand main body 67 formed by bending a metal round bar, and a support cylinder 68 fixed to the stand main body 67.

  The stand main body 67 includes a first leg portion 67b having a grounding portion 67a at one end, a second leg portion 67d having a grounding portion 67c at one end and disposed on the right side of the first leg portion 67b, A connecting portion 67e that is curved so as to integrally connect the other ends of the second leg portions 67b and 67d, and a footrest portion that is integrated with the grounding portion 67a of the first leg portion 67b so that the driver can step on the foot. 67f and the support tube 68 are fixed to the connecting portion 67e via the mounting plate 70. Thus, the support tube 68 is rotatably connected to the second brackets 66 through the stand shaft 69.

  Moreover, the main stand 10 is rotatably connected to the second brackets 66 so that a line L extending forward and backward through the center between the grounding portions 67a and 67c is offset to the right side from the vehicle body center line CL. .

  Thus, the main stand 10 can pivot between the standing position (position shown in FIGS. 1 and 2) and the storage position (position shown in FIG. 3) so as to be pivotable to the second bracket 66. It is supported and is always urged toward the storage position by a stand spring 71 provided between one of the second brackets 66 and the main stand 10. Thus, when the main stand 10 is rotated from the retracted position to the standing position to obtain a parking state, the footrest 67f may be swung and operated, and when the main stand 10 is rotated to the standing position. It is possible to obtain a parking state in a posture in which the front wheel WF is floated from the ground with the rear wheel WR in contact with the ground, and the main stand 10 is moved upward from the standing position in the retracted position for releasing the parking state. It is possible to rotate.

  On the bottom wall 54 of the battery housing portion 33, a stopper 72 that abuts the main stand 10 in the upright position and maintains the main stand 10 in an upright state is disposed in front of the partition wall 57 in the vehicle width direction. A pair of left and right support bosses 73 and 73 for connecting the link mechanism 18 are provided in front of the second bracket 66... And are integrally provided so as to protrude downward from the lower surface of the bottom wall 54. It is integrally provided so as to protrude downward from the lower surface of the bottom wall 54 on the outer side of the portion.

  A plurality of ribs projecting upward from the upper surface of the bottom wall 54 are integrally provided on the bottom wall 54 of the battery housing portion 33, and the number of the ribs disposed in front of the partition wall 57 is the same. More than the number of the ribs arranged behind the partition wall 57.

  That is, in the first and second storage chambers 55 and 56, the bottom wall 54 of the battery storage portion 33 has a first portion extending in the vehicle width direction at the front portion of the first and second storage chambers 55 and 56, respectively. Ribs 74, 74, second ribs 75, 75 extending in the vehicle width direction at the rear portions of the first and second storage chambers 55, 56, and center portions in the front-rear direction of the first and second storage chambers 55, 56 Third ribs 76, 76 extending in the vehicle width direction, and first and second ribs 74, 75, extending in the front-rear direction so as to be orthogonal to the third ribs 76 at two positions spaced in the vehicle width direction. The fourth ribs 77 and 77 and the fifth ribs 78 and 78 having both ends connected to each other are integrally provided, but the battery is accommodated in the first accommodating chamber 55 in front of the partition wall 57. The part 33 includes a third rib 76 in addition to the first to fifth ribs 74 to 78. In contrast to the sixth and seventh ribs 79 and 80 projecting integrally from the center in the vehicle width direction and the connecting portion of the fourth and fifth ribs 77 and 78 to the second rib 75, respectively. Only the first to fifth ribs 74 to 78 are integrally provided in the battery housing portion 33 in the second housing chamber 56 behind the partition wall 57.

Next, the operation of the first embodiment will be described. The electric motor 6, the high voltage battery 7,... And the control unit 8 are provided on the swing arm 9A, so that the electric motor 6 can be electrically operated before being attached to the body frame F. The power unit including the motor 6 can be assembled in advance, so that the assembling property can be improved, the maintainability can be improved, and the wiring can be simplified. The swing arm 9A can be connected to the electric motor 6 and the control unit 8. Is a partition wall 53a that extends in the front-rear direction of the vehicle body in front of the rear wheel WR to dispose the high-voltage battery 7 ..., a battery housing portion 33 that is partially formed by the partition wall 53a, and the partition wall 53a. As a part of the left side of the rear wheel WR from either one of the left and right ends of the battery accommodating portion 33 (the left end in this embodiment) Possible to increase the rigidity of the swing arm 9A without providing a special member for Runode rigidity improvements Yusuke arm portion is extended until the (34,84) (left side in this embodiment) one side In addition, the number of members provided for supporting the high voltage batteries 7 can be reduced. Moreover, there is a possibility that the simplification of the wiring may be hindered by the presence of the partition wall 53a, but a pair of openings 61 for facing the terminals 59, 60,. Since it is provided, the influence of the partition wall 53a on the simplification of the wiring can be reduced.

  Further, since the openings 61 are provided in the upper part or the lower part (lower part in this embodiment) of the partition wall 53a, the influence on the layout of the partition wall 53a itself or a member disposed in the vicinity of the partition wall 53a is reduced. be able to.

Some the outer surface of the arm portion 34 of the component to or before Symbol partition wall 53a, so the control unit 8 so as to overlap with the high-voltage battery 7 ... portion of a side view is attached, the high-voltage battery 7 The distance from ... to the control unit 8 can be shortened. In addition, since the front cover 38 that covers the arm portion 34 and the control unit 8 attached to the arm portion 34 from the outside is detachably attached to the arm portion 34, the front cover 38 is not concerned with wiring during maintenance. Since the control unit 8 is exposed to the outside when the front cover 38 is removed, the maintainability can be further improved.

  Further, a plurality of pairs of high voltage batteries 7 are individually accommodated in the first and second accommodating chambers 55 and 56 defined by the partition wall 57 provided integrally with the battery accommodating portion 33, so that the power The partition wall 57 can increase the rigidity of the swing arm 9A while ensuring a large amount. Further, since the openings 61 are individually provided in the partition wall 53a so as to communicate with the first and second storage chambers 55 and 56, the cableability between the high voltage batteries 7 and the control unit 8 can be improved.

  Further, a lid member 65 that covers the battery housing portion 33 from above is detachably attached to the battery housing portion 33 formed to open upward so as to abut on the high-voltage batteries 7 in the battery housing portion 33. Therefore, it is possible to reduce the number of parts of the dedicated member that supports the high voltage batteries 7 while improving the maintainability of the high voltage batteries 7.

  Further, the main stand 10 is rotatably supported by the battery accommodating portion 33 in the swing arm 9A, and the battery accommodating portion 33 is partitioned into the first and second accommodating chambers 55 and 56 so as to partition in the vehicle width direction. Since the partition wall 57 extending in the direction is integrally provided in the battery housing portion 33 and the main stand 10 disposed below the partition wall 57 is rotatably supported by the bottom wall 54 of the battery housing portion 33, the partition wall 57 is provided. As a result, the main stand 10 is supported on the portion where the rigidity is increased, so that it is not necessary to provide a dedicated member for increasing the rigidity and the increase in the weight of the battery housing portion 33 is suppressed. The support rigidity of the main stand 10 can be increased.

  Moreover, a pair of second brackets 66... Extending in the front-rear direction intersecting with the partition wall 57 in a plan view support the main stand 10 so as to be able to rotate. Since it is provided integrally so as to protrude downward from the lower surface of the wall 54, the rigidity of the portion that rotatably supports the main stand 10 can be further increased.

  A stopper 72 that contacts the main stand 10 and maintains the main stand 10 in an upright state extends on the bottom wall 54 of the battery housing portion 33 in front of the partition wall 57 in the vehicle width direction. Since it is provided integrally so as to protrude downward from the lower surface of the wall 54, the rigidity of the portion that rotatably supports the main stand 10 can be further increased.

  Further, a plurality of ribs 74 to 80 projecting upward from the upper surface of the bottom wall 54 are integrally provided on the bottom wall 54 of the battery accommodating portion 33, and the ribs 74 to 80 are disposed in front of the partition wall 57. Since the number of 80 is set to be larger than the number of the ribs 74 to 78 disposed behind the partition wall 57, only the portion where the rigidity of the bottom wall 54 needs to be increased by providing the stopper 72 is provided. Can be increased by increasing the number of ribs, and an unnecessary increase in weight can be avoided.

  Further, a support boss 73 for supporting the swing arm 9A on the vehicle body frame F so as to be swingable up and down is provided on the bottom wall 54 of the battery accommodating portion 33 downward from the lower surface of the bottom wall 54. Since it is provided integrally so as to protrude, the rigidity of the portion that rotatably supports the main stand 10 can be further increased.

  Further, the electric motor 6 is arranged on one side of the vehicle body center line CL extending in the front-rear direction, and the individual center-of-gravity positions G1, G2 of the pair of high voltage batteries 7 accommodated in the battery housing portion 33 are Since the electric motor 8 that is a heavy object and the gravity center positions G1 and G2 of the pair of high-voltage batteries 7 that are heavy objects are separately arranged, the weight balance in the left-right direction can be increased. It can be good.

  The second embodiment of the present invention will be described with reference to FIG. 4, but the portions corresponding to the first embodiment are only given the same reference numerals and are described in detail. Omitted.

The swing arm 9B includes a battery housing portion 83 that houses a pair of batteries 7 and an arm portion 84 that extends from one end portion in the left-right direction of the battery housing portion 83 to either one of the left and right sides of the rear wheel WR. A swing arm main body 85, a gear case 36 coupled to the rear part of the arm part 84 from the rear wheel side, a rear cover 37 coupled to the rear part of the arm part 34 from the opposite side of the rear wheel WR, The front cover 38 includes a front cover 38 that is detachably coupled to the front portion of the arm portion 84 from the opposite side of the battery housing portion 83 in the front of the rear cover 37. In this embodiment, the arm portion 84 extends from the left end of the battery housing 83 to the left side of the rear wheel WR.

  The axle 5 of the rear wheel WR is supported on the rear part of the swing arm 9B, and the electric motor 6 and the power transmission means 39 are accommodated.

  The battery housing portion 83 includes a first housing portion 83a located in front of the rear wheel WR and a second housing portion continuous to the right side of the first housing portion 83a so as to be located on the right side of the front portion of the rear wheel WR. 83b, and a side wall 86 formed in a substantially L shape so as to form the outer periphery of the first and second accommodating portions 83a, 83b, and a lower part of the side wall 86 are integrally connected. It consists of a bottom wall 87.

  Thus, the first housing portion 83a houses the high voltage battery 7 whose longitudinal direction is along the vehicle width direction, and the second housing portion 83b houses the high voltage whose longitudinal direction is along the longitudinal direction of the vehicle. A battery 7 is accommodated.

  In addition, a portion of the side wall 86 that constitutes the left side wall of the first housing portion 83a functions as a partition wall 86a for partitioning from the electric motor 6 and the control unit 8 to place one high voltage battery 7, and this partition wall. 86a is provided integrally with the swing arm 9B in front of the rear wheel WR. The arm portion 84 extends rearward from the battery housing portion 83 with the partition wall 86a as a part of the constituent elements.

  In addition, the electric motor 6 is disposed on the left and right sides (left side in this embodiment) of the vehicle body center line CL extending in the front-rear direction, while the longitudinal direction of the second housing portion 83b of the battery housing portion 33 is The high voltage battery 7 accommodated along the front-rear direction is disposed on the left and right other side (right side in this embodiment) of the vehicle body center line CL, and the high voltage battery 7 is disposed on the left and right other side of the vehicle body center line CL. A part of the voltage battery 7 is disposed on the side of the rear wheel WR.

  By the way, the control unit 8 is attached to the outer surface of the arm portion 84 having the partition wall 86a as a component by a plurality of screw members 58, 58... It arrange | positions in the position which overlaps with a part of both said high voltage battery 7 ..., and is covered with the front cover 38. FIG.

  In addition, an opening is provided in the upper or lower portion of the partition wall 86a so as to face the terminals 59 and 60 provided in pairs in the high voltage battery 7 accommodated in the first accommodating portion 83a.

The second swing arm 9B also depending on the form of implementation, the partition wall 86a extending in the vehicle longitudinal direction in front of the rear wheel WR so as to place the high-voltage battery 7 ... and defines the electric motor 6 and the control unit 8, A battery housing portion 83 having a part of the outer periphery formed by a partition wall 86a and an arm portion 84 that extends from the left end of the battery housing portion 83 to the left side of the rear wheel WR with the partition wall 86a as a component. to Runode, it is possible to increase the rigidity of the swing arm 9B without providing a special member for improving rigidity, it is possible to reduce the members provided for supporting the high-voltage battery 7 .... In addition, there is a possibility that the simplification of the wiring may be hindered by the presence of the partition wall 86a. However, since the opening portion facing the terminals 59 and 60 provided in the high voltage battery 7 is provided in the partition wall 86a, the wiring can be simplified. The influence given by the partition wall 86a can be reduced.

  Further, since the control unit 8 is mounted on the outer surface of the arm portion 84 having the partition wall 86a as a component so as to overlap a part of the high voltage battery 7 in side view, the control is performed from the high voltage battery 7. The distance to the unit 8 can be shortened. Further, since the front cover 38 that covers the arm portion 84 and the control unit 8 attached to the arm portion 84 from the outside is detachably attached to the arm portion 84, the front cover 38 is not concerned with wiring during maintenance. Since the control unit 8 is exposed to the outside when the front cover 38 is removed, the maintainability can be further improved.

  A plurality of pairs of high voltage batteries 7 are individually accommodated in the first and second accommodating portions 83a and 83b of the battery accommodating portion 83, so that a large amount of electric power can be secured.

  In addition, the electric motor 6 is disposed on the left and right sides of the vehicle body center line CL extending in the front-rear direction (the left side in this embodiment), and the longitudinal direction of the second housing portion 83b of the battery housing portion 33 is aligned with the longitudinal direction of the vehicle. Since the accommodated high voltage battery 7 is arranged on the left and right sides of the vehicle body center line CL, the left and right weights can be obtained by arranging the heavy electric motor 6 and the high voltage battery 7 on the left and right of the vehicle body center line CL. The balance can be made good. Moreover, since a part of the high voltage battery 7 disposed on the left and right other side of the vehicle body center line CL is located on the side of the rear wheel WR, the rear wheel WR is moved further rearward in order to avoid buffering with the high voltage battery 7. Therefore, it is possible to avoid an increase in the longitudinal length of the electric motorcycle.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

6 ... Electric motor 7 ... High voltage battery 8 as a battery ... Control units 9A, 9B ... Swing arms 33 , 83 ... Battery housing 34 , 84 ... Arm 38 ... Front covers 53a, 86a, which are cover members, partition walls 55, 56, storage chamber 57, partition walls 59, 60, terminal 61, opening 65, lid member CL, ..Car body center line F ... Body frame WR ... Rear wheel

Claims (6)

The swing arm (9A, 9B), which is supported on the vehicle body frame (F) so as to be swingable up and down, exerts power for rotationally driving the rear wheel (WR) pivotally supported on the rear part of the swing arm (9A, 9B). A straddle-type electric vehicle in which an electric motor (6) that operates, a battery (7) that supplies electric power to the electric motor (6), and a control unit (8) that controls the electric motor (6) are arranged In
The swing arm (9A, 9B) is separated from the electric motor (6) and the control unit (8) and is arranged in the front-rear direction of the vehicle body in front of the rear wheel (WR) to place the battery (7). The partition wall (53a, 86a) extending, the battery housing part (33, 83) having a part of the outer periphery formed by the partition wall (53a, 86a), and the partition wall (53a, 86a) as a part of the constituent elements An arm portion (34, 84) extending from one end portion in the left-right direction of the battery housing portion (33, 83) to one of the left and right sides of the rear wheel (WR),
A saddle-ride type electric vehicle characterized in that an opening (61) facing a terminal (59, 60) provided in the battery (7) is provided in the partition wall (53a, 86a).   The saddle-ride type electric vehicle according to claim 1, wherein the opening (61) is provided at an upper part or a lower part of the partition wall (53a, 86a). The control unit (8) is attached to the outer surface of the arm portion (34, 84) so as to overlap a part of the battery (7) in a side view, and the arm portion (34, 84) and the arm portion ( The cover member (38) covering the control unit (8) attached to the outer side (34, 84) from the outside is detachably attached to the arm portion (34, 84). A saddle-ride type electric vehicle.   The plurality of batteries (7) are individually accommodated in a plurality of accommodation chambers (55, 56) defined by partition walls (57) provided integrally with the battery accommodation portion (33), and the openings (61 4. The saddle-ride type electric vehicle according to claim 3, wherein the partition wall (53 a) is provided so as to individually communicate with the storage chambers (55, 56).   A lid member (65) that covers the battery housing part (33) from above is attached to the battery (7) in the battery housing part (33). The saddle-ride type electric vehicle according to claim 3 or 4, wherein the saddle-ride type electric vehicle is detachably attached so as to abut.   The electric motor (6) is disposed on the left and right sides of the vehicle body center line (CL) extending in the front-rear direction, and the battery (7) is disposed so as to be partially on the side of the rear wheel (WR). The saddle-ride type electric vehicle according to claim 1, wherein the saddle-ride type electric vehicle is disposed on the left and right other sides of the vehicle body center line (CL).

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