JPWO2019064563A1 - Battery storage device for electric vehicle - Google Patents

Abstract

A terminal displacement mechanism (45) for displacing the case-side connection terminal (43) between the connection position (P1) and the retracted position (P2) is provided, and is provided at the lower end of the case body (132F, 132R) of the battery case (42). Is provided with a bottom wall (132Fb, 132Rb) that is inclined rearward and downward, and on the rear side of the bottom wall (132Fb, 132Rb) is a drainage part () capable of discharging water that has entered the case body (132F, 132R). 180), and the case-side connection terminal (43) is arranged on the front side of the bottom wall (132Fb, 132Rb), and the case-side connection terminal (43) is located at the retracted position (P2) in the bottom wall (132Fb, 132Rb). Of the battery case (42) in the recess (185) formed by the case-side connection terminal (43) and the bottom wall (132Fb, 132Rb) that are recessed below and located at the retracted position (P2). Tteri cross member extending in the vehicle width direction of the support frame (110) (116, 122) are arranged.

Description

  The present invention relates to a battery storage device for an electric vehicle.

  For example, Patent Document 1 discloses an electric vehicle such as an electric motorcycle in which a battery is detachably mounted on a vehicle body and the battery can be detached from the vehicle body when the battery is charged.

International Publication No. 2015/068753

  By the way, in the said patent document 1, the invasion of water in a battery case is suppressed by providing an overhang part in the upper edge of a battery case. However, it is possible that water may enter the battery case due to unintentional exposure to water, dew condensation in the case, or the like. A connection terminal for connecting to the battery is arranged at the bottom of the battery case, and it is desired to prevent water from splashing on the connection terminal. Relatedly, there is also a demand for a structure that protects the connection terminals in the battery case from disturbance such as impact load.

  Therefore, the present invention provides a battery storage device for an electric vehicle capable of suppressing water splashing on the connection terminals in the battery case and suppressing the influence of disturbance.

One aspect of the present invention is connected to a battery case (42) that houses batteries (62A, 62B) and a terminal portion (41) of the batteries (62A, 62B) housed in the battery case (42). A case-side connection terminal (43), a connection position (P1) for connecting the case-side connection terminal (43) to the terminal portion (41) of the battery (62A, 62B), and a separation position from the connection position (P1). In the battery storage device (64) of the electric vehicle, which includes the retracted position (P2) and the terminal displacement mechanism (45) for displacing the retracted position (P2), the battery case (42) includes the case body (132F, 132R). The case main body (132F, 13) is supported by a battery support frame (110) and is attached to the vehicle body frame (F) via the battery support frame (110). R) is provided with a bottom wall (132Fb, 132Rb) that is inclined rearward and downward, and water that has entered the case main body (132F, 132R) is provided on the rear side of the bottom wall (132Fb, 132Rb). A drainage part (180) capable of draining is provided, and the case side connection terminal (43) is arranged in front of the water drainage part (180) of the bottom wall (132Fb, 132Rb) to connect the case side connection. The terminal (43) protrudes above the bottom wall (132Fb, 132Rb) at the connection position (P1) and is connected to the terminal portion (41) of the battery (62A, 62B), and the retreat position (P2). Then, the case side contact at the retreat position (P2) is performed by immersing below the bottom wall (132Fb, 132Rb) and separating from the terminal portion (41) of the battery (62A, 62B). A recess (185) is formed below the case body (132F, 132R) by the terminal (43) and the bottom wall (132Fb, 132Rb), and the battery support frame (110) is formed in the recess (185). Cross members (116, 122) extending in the vehicle width direction are arranged.
According to this configuration, water droplets and the like that have entered the case body are guided to the water draining portion on the rear side of the bottom wall by the inclination of the bottom wall, and are discharged from the water draining portion to the outside of the case. Therefore, it is possible to prevent water from splashing on the case-side connection terminal on the front side of the bottom wall.
Further, the periphery of the case-side connection terminal that moves up and down with respect to the bottom wall of the case body is less likely to be affected by disturbance from the side of the vehicle due to the cross member of the battery support frame. Therefore, the connection state and operability of the case-side connection terminal can be favorably maintained.
Further, since the cross member of the battery support frame is arranged in the recess formed by the case side connection terminal and the bottom wall in the retracted position, the cross member for protecting the case side connection terminal can be arranged efficiently and compactly, It is possible to suppress the influence of disturbance from the side of the vehicle on the case-side connection terminal that is separated from the battery terminal portion.

In one aspect of the present invention, the case-side connection terminal (43) and the cross member (116, 122) at the retracted position (P2) are arranged so as to overlap each other when viewed in the vehicle front-rear direction.
According to this configuration, the cross member suppresses the influence of disturbance from the front or the rear of the vehicle on the case-side connection terminal in the retracted position. Therefore, the protection of the case-side connection terminal can be further enhanced.

1 aspect of this invention WHEREIN: The said cross member (116,122) is equipped with the cable support part (131) which supports the electric cable (60) which reaches the electric motor (30) for vehicle traveling.
With this configuration, it is possible to efficiently and compactly support the electric cable leading to the electric motor around the battery case.

One aspect of the present invention includes a link mechanism (44) operable to shift the case-side connection terminal (43) upward, and a support portion (162) of the link mechanism (44) includes the battery case ( 42) is supported by the battery support frame (110) on the outer side in the vehicle width direction.
With this configuration, the operation load of the link mechanism can be supported by the battery support frame, and the support rigidity of the link member can be increased to improve the feeling of operation.

One aspect of the present invention includes a protection member (189) surrounding the case-side connection terminal (43) in the retracted position (P2), the protection member (189) being side-viewed with the body frame (F). It is arranged so that it overlaps.
According to this structure, the protective member and the vehicle body frame can prevent the influence of disturbance from the side of the vehicle on the case-side connection terminal. Even if the vehicle body frame is deformed by the impact from the side surface of the vehicle, it is possible to prevent the vehicle body frame from contacting the terminal portion.

1 aspect of this invention WHEREIN: The said cross member (116,122) is equipped with the cable support part (131) which supports the electric cable (60) which reaches the electric motor (30) for vehicle traveling, The said electric cable (60). ) And the cable support (131) are arranged behind the protection member (189).
According to this configuration, the influence of disturbance from the front of the vehicle on the electric cable and the cable support portion can be efficiently suppressed by the protection member that protects the case-side connection terminal.

In one aspect of the present invention, the battery case (42) houses a plurality of the batteries (62A, 62B), and the protection member (189) corresponds to a plurality of the batteries (62A, 62B). The electric cable (60) and the cable support portion (131) are provided between the plurality of protection members (189).
According to this configuration, the plurality of protection members corresponding to the plurality of batteries can efficiently suppress the influence of disturbance on the electric cables and the cable support portion in the battery arrangement direction (for example, the vehicle front-rear direction).

  According to the aspects of the present invention, it is possible to provide a battery storage device for an electric vehicle capable of suppressing water splashing on the connection terminals in the battery case and suppressing the influence of disturbance.

FIG. 1 is a left side view of a saddle riding type electric vehicle according to an embodiment. It is a left side view which removed some components of a saddle riding type electric vehicle concerning an embodiment. 1 is a left side view of a vehicle body frame of a saddle-ride type electric vehicle according to an embodiment. 1 is a perspective view of a vehicle body frame of a saddle riding type electric vehicle according to an embodiment. It is a top view of the body frame of the saddle-ride type electric vehicle according to the embodiment. It is sectional drawing which follows the VI-VI line of FIG. 1 of the saddle riding type electric vehicle which concerns on embodiment. It is the perspective view which looked at the main arm concerning an embodiment from the left front part upper part. It is the side view which expanded and showed a part of FIG. 2 of the saddle riding type electric vehicle which concerns on embodiment. It is a bottom view of the saddle riding type electric vehicle which concerns on embodiment. It is sectional drawing which follows the XX line of FIG. 8 of the saddle riding type electric vehicle which concerns on embodiment. It is sectional drawing which follows the XI-XI line of FIG. 9 of the saddle riding type electric vehicle which concerns on embodiment. FIG. 3 is a perspective view of a battery support frame of the saddle-ride type electric vehicle according to the embodiment. FIG. 3 is a perspective view of the battery storage device according to the embodiment when the battery is not fixed. FIG. 3 is a side view of a part of the battery storage device according to the embodiment when the battery is not fixed. FIG. 3 is a perspective view of the battery storage device according to the embodiment when the battery is fixed. It is a side view at the time of a battery fixed state of a part of battery storage equipment concerning an embodiment. It is sectional drawing which follows the XVII-XVII line of FIG. 13 of the battery storage device which concerns on embodiment. It is a perspective view which shows the terminal support part of the battery storage device which concerns on embodiment. It is a perspective view which shows the battery fixing part of the battery storage device which concerns on embodiment. It is the figure which combined and described the side view (a) at the time of the battery insertion of the battery storage device which concerns on embodiment, a perspective view (b), and a top view (c). It is a perspective view which shows the battery fixing part of the battery storage device which concerns on embodiment. It is the figure which combined and described the side view (a) at the time of the battery lock operation of the battery storage device which concerns on embodiment, a perspective view (b), and a top view (c). FIG. 18 is a cross-sectional view similar to FIG. 17 at the time of battery lock operation of the battery storage device according to the embodiment. It is the figure which combined and described the side view (a) at the time of the battery lock operation of the battery storage device which concerns on embodiment, a perspective view (b), and a top view (c). FIG. 18 is a cross-sectional view similar to FIG. 17 at the time of battery lock operation of the battery storage device according to the embodiment. FIG. 18 is a cross-sectional view similar to FIG. 17 when the battery lock of the battery storage device according to the embodiment is completed. It is a partial cross-sectional side view at the time of battery lock non-completion of the battery storage device and seat concerning an embodiment. It is a partial cross-sectional side view at the time of completion of the battery lock of the battery storage device and a seat concerning an embodiment. It is a left side view of the bottom part periphery of the battery storage device concerning an embodiment. It is a top view of the bottom wall of the resin case part of the battery storage device concerning an embodiment. It is an AA sectional view of FIG. It is BB sectional drawing of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the directions such as front, rear, left and right in the following description are the same as the directions in the vehicle described below unless otherwise specified. Further, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left side of the vehicle, and an arrow UP indicating the upper side of the vehicle are shown at appropriate places in the drawings used in the following description.

FIG. 1 is a diagram showing a left side surface of an electric motorcycle 1 which is one form of a saddle type electric vehicle. The motorcycle 1 of the present embodiment is a scooter type vehicle having a step floor 9 on which a driver seated on a seat 8 rests his / her soles.
The motorcycle 1 includes a front wheel 3 that is a steering wheel and a rear wheel 4 that is a driving wheel. The front wheel 3 is rotatably supported by a pair of left and right front forks 6. The front wheel 3 can be steered by the bar handle 2. A front fender 50F that covers the upper side of the front wheel 3 is supported by the front fork 6.

  The rear wheel 4 is supported by a rear portion of a swing arm 20 which is swingably supported by the vehicle body frame F. The motorcycle 1 according to the present embodiment is a unit-swing type motorcycle. The swing arm 20 has an electric motor 30 for driving the vehicle, and the driving force of the electric motor 30 is reduced to be transmitted to the rear wheel axle 4a. And a deceleration mechanism 35 (see FIG. 6) are installed. At the rear end of the swing arm 20, a rear fender 50R that covers the upper rear portion of the rear wheel 4 is supported via a fender support arm 40. The lower end of the rear cushion 7, which is a rear side suspension component, is connected to the fender support arm 40.

  Further, the motorcycle 1 includes a pair of left and right step floors 9 on which the driver seated on the seat 8 rests his / her soles, and a center tunnel 10 extending in the vehicle front-rear direction between the left and right step floors 9. . The center tunnel 10 is located on the front side of the seat 8 and is formed lower than the seat 8. The space on the upper side of the center tunnel 10 is between the bar handle 2 and the seat 8 and forms a straddling space when the driver straddles the vehicle body.

FIG. 2 is a left side view of the motorcycle 1 from which the seat 8 and covers have been removed. FIG. 3 is a view of the body frame F of the motorcycle 1 as viewed from the left side, and FIG. 4 is a view of the body frame F as viewed from the upper left front part. Further, FIG. 5 is a view of the body frame F as seen from above.
The vehicle body frame F is formed by integrally joining a plurality of types of steel materials by welding or the like. The body frame F has a head pipe 12 at the front end. The head pipe 12 steerably holds the front wheels 3 via the steering stem 11 (see FIGS. 1 and 2) and the left and right front forks 6.

  The body frame F further includes a pair of left and right upper frames 13 extending rearward and obliquely downward from a substantially intermediate region of the head pipe 12 in the up-down direction, and extending downward from a lower region of the head pipe 12 and then extending rearward of the vehicle body. A pair of left and right lower frames 14 extending upward in a state of being slightly tilted rearward from the left and right portions, and a pair of left and right seat frames 15 extending diagonally rearward and upward from a substantially middle position in the front-rear direction of the left and right upper frames 13, Is equipped with. The lower frame 14 has a down frame portion 14a extending rearward and downward from the head pipe 12, and a rear frame portion 14b extending upward from a rear portion of the down frame portion 14a.

The upper end portions of the left and right rear frame portions 14b are joined to substantially corresponding intermediate positions in the front-rear direction of the corresponding left and right seat frames 15. Seats 8 on which an occupant sits are attached to the upper portions of the left and right seat frames 15. The seat 8 can be opened and closed vertically with the front end side serving as a hinge fulcrum.
Further, the rear end portions of the left and right upper frames 13 are joined to the left and right corresponding rear frame portions 14b near the lower ends thereof.

  In each of the left and right lower frames 14, an upper region of the downward extending portion 14a-1 of the down frame portion 14a and a rear region of the rear extending portion 14a-2 are connected by a middle frame 16. The downward extending portions 14a-1 of the left and right down frame portions 14a are connected to each other by a front cross member 18. The front end regions of the rear extending portions 14a-2 of the left and right down frame portions 14a are connected to each other by the front lower cross member 19. The rear end regions of the rear extending portions 14a-2 of the left and right down frame portions 14a are connected to each other by a cross frame 51. The front cross member 18 and the front lower cross member 19 are formed by a round steel pipe having a diameter smaller than that of the lower frame 14. The front cross member 18 extends linearly in the vehicle width direction, and the front lower cross member 19 extends in a forwardly curved shape. The cross frame 51 extends linearly in the vehicle width direction and is formed of a round steel pipe having a diameter substantially the same as that of the lower frame 14.

  The left and right seat frames 15 have front regions connected to each other by a center cross member 52, and rear end parts connected to each other by a rear cross member 53 and a rear cross plate 54. The center cross member 52 extends upwardly and forwardly in a convex curved shape, and the rear cross member 53 extends linearly in the vehicle width direction. The center cross member 52 is formed of a round steel pipe having a diameter smaller than that of the seat frame 15, and the rear cross member 53 is formed of a round steel pipe having substantially the same diameter as the seat frame 15.

  The rear frame portions 14 b of the left and right lower frames 14 and the rear regions of the corresponding left and right seat frames 15 are connected by a support frame 17. The rear regions of the left and right support frames 17 are interconnected by a rear cross member 55. The rear cross member 55 extends downward in a curved shape. The rear cross member 55 is formed of a round steel pipe having a diameter substantially the same as that of the support frame 17.

FIG. 6 is a view showing a cross section of the motorcycle 1 taken along line VI-VI in FIG. 1.
The swing arm 20 extends from the front of the rear wheel 4 toward the left side of the rear wheel 4, and the swing arm 20 is curved inward in the vehicle width direction from the front right side of the main arm 21 toward the right side of the rear wheel 4. And a sub-arm 22 extending in the same direction. Reference sign CL in the drawing is a center line in the vehicle width direction of the vehicle.

The main arm 21 is provided with a motor housing portion 23 that houses the electric motor 30, and a speed reduction mechanism housing portion 24 that houses the speed reduction mechanism 35.
The motor housing portion 23 includes an inner cover 23a that covers the electric motor 30 from the inside in the vehicle width direction, and an outer cover 23b that covers the electric motor 30 from the outside in the vehicle width direction.
The inner cover 23a has a box shape that opens outward in the vehicle width direction. The inner cover 23a is formed integrally with the arm body 21a of the main arm 21. The outer cover 23b is joined to the inner cover 23a by a fastening member such as a bolt.

FIG. 7 is a view of the main arm 21 as viewed from above the left front part.
As shown in FIGS. 6 and 7, the main arm 21 is located in front of the rear wheel 4 and extends toward the rear side of the vehicle body from the arm base 21c extending in the vehicle width direction and the left end of the arm base 21c. And an arm main body portion 21a extending in a vertical direction. The sub arm 22 is connected to the right side surface of the arm base 21c. Extending pieces 21b extending forward are provided at both left and right ends of the arm base 21c. The left and right extension pieces 21b are formed with insertion holes 56 that penetrate in the vehicle width direction. A pivot shaft 57, which will be described in detail later, is rotatably held in the insertion hole 56. The upper surface from each of the left and right extension pieces 21b to the arm base 21c extends obliquely toward the upper rear side. This portion is an upper inclined portion 58 that extends obliquely rearward and upward from a connecting portion with the pivot shaft 57.

  As shown in FIG. 6, the electric motor 30 is held by the main arm 21 of the swing arm 20 and arranged on the left side of the rear wheel 4. The electric motor 30 is an inner rotor type motor, and includes an inner rotor 32 having a motor output shaft 31, and a stator 33. The electric motor 30 is arranged in a rear region of the main arm 21 of the swing arm 20.

  The motor output shaft 31 is axially supported by the main arm 21 along the vehicle width direction. The motor output shaft 31 has an axis Cm1 (hereinafter, referred to as “motor axis Cm1”) parallel to the rear wheel axis CR (the axis of the rear wheel axle 4a). Reference numerals 34a to 34c in FIG. 6 are bearings that rotatably support the motor output shaft 31.

  The inner rotor 32 includes a cylindrical inner rotor body 32a and a magnet 32b provided on the outer peripheral surface of the inner rotor body 32a. The radial center portion of the inner rotor body 32a is spline-coupled to the motor output shaft 31. A detected body 32c is attached to an outer peripheral surface of an inner end portion of the inner rotor body 32a in the vehicle width direction.

  The stator 33 has an annular stator yoke 33a fixed to the outer peripheral wall of the inner cover 23a, a plurality of teeth 33b joined to the stator yoke 33a and radially provided with respect to the motor axis Cm1, and each tooth 33b. And a wound coil 33c. A rotor sensor 33d that detects the rotational position of the inner rotor 32 by detecting passage of the detected body 32c is attached to the stator yoke 33a.

FIG. 8 is an enlarged view of the vicinity of the support portion of the swing arm 20 of FIG.
As shown in the figure, an electric cable 60 is connected to the electric motor 30. The electric cable 60 is a cable that electrically connects the power supply unit on the side of the vehicle body frame F and the three-phase coils 33c of the electric motor 30, and protects the periphery of the bundle of the three-phase electric wires 60u, 60v, and 60w. It is covered with a material 61 (see FIG. 11). The thickness of the electric cable 60 is sufficiently large, and the maximum outer diameter of the protective member 61 is larger than the outer diameter of the pivot shaft 57. The electric cable 60 connected to the electric motor 30 is pulled out forward along the side surface of the arm body portion 21a of the swing arm 20 on the outer side in the vehicle width direction. The wiring portion of the electric cable 60 on the side of the arm body 21a is covered by an arm cover 39 attached to the arm body 21a, as shown in FIG.

  Here, as shown in FIG. 2, the power supply unit for the electric motor 30 includes a pair of batteries 62A and 62B that store power, and a power drive unit (PDU) that converts the DC power of these batteries 62A and 62B into AC power. ) 63. The three-phase electric wires 60u, 60v, 60w of the electric cable 60 are connected to the power drive unit 63. The batteries 62A and 62B and the power drive unit 63 are connected to each other by another electric cable (not shown).

  The power drive unit 63 is arranged in a region of the body frame F surrounded by the left and right down frame portions 14a of the lower frame 14 and the left and right upper frames 13, and is arranged in the vehicle width direction of the left and right middle frames 16. Located in the inner area. The power drive unit 63 is arranged in a space below the center tunnel 10 in a slightly inclined state.

  The batteries 62A and 62B are arranged side by side in the front and rear inside a battery storage device 64 provided below the seat 8. The batteries 62A and 62B are both formed in a substantially rectangular parallelepiped shape and have the same configuration. The batteries 62A and 62B are connected in series so that a predetermined high voltage (for example, 48V to 72V) can be obtained. For example, the batteries 62A and 62B are configured as lithium ion batteries as energy storage that can be charged and discharged.

  The electric motor 30 is controlled by a control unit (not shown). The control unit receives information from a throttle opening sensor (not shown) or the like, and outputs a predetermined control signal to the driver of the electric motor 30 according to the driver's intention to operate or the traveling condition.

  Further, the reduction mechanism 35 shown in FIG. 6 includes a transmission shaft 36 axially supported in parallel with the motor output shaft 31 and the rear wheel axle 4a, a vehicle width direction inner end of the motor output shaft 31, and a vehicle width of the transmission shaft 36. First gear pairs 37a, 37b provided on the inner side in the direction, and second gear pairs 38a, 38b provided on the outer side in the vehicle width direction of the transmission shaft 36 and the left end portion of the rear wheel axle 4a, respectively. Is equipped with. Reference numerals 4b to 4d in FIG. 6 are bearings that rotatably support the rear wheel axle 4a.

The motor output shaft 31, the transmission shaft 36, and the rear wheel axle 4a are arranged in order from the front side in the front-rear direction at intervals. The transmission shaft 36 has an axis Ct1 (hereinafter, referred to as “transmission axis Ct1”) parallel to the motor axis Cm1. Reference numerals 39a and 39b in FIG. 6 denote bearings that rotatably support the transmission shaft 36.
The rotation of the motor output shaft 31 is transmitted to the rear wheel axle 4a after being decelerated to a predetermined reduction ratio by the structure of the speed reduction mechanism 35 described above.

FIG. 9 is a view of the vicinity of the support portion of the swing arm 20 as viewed from below the vehicle. 10 is a diagram showing a cross section taken along line XX of FIG. 8, and FIG. 11 is a diagram showing a cross section taken along line XI-XI of FIG. 9.
As shown in FIG. 8 and these drawings, an arm support member 65 that projects rearward of the vehicle is attached to a lower region of the rear frame portion 14b of the left and right lower frames 14. A pivot shaft 57 that swingably supports the front portion of the swing arm 20 is held near the rear end of the arm support member 65. Although detailed structure will be described later, the arm support member 65 is formed to have a substantially triangular shape in which one apex sandwiched by two sides projects toward the vehicle rear side in a side view. The pivot shaft 57 is held near the top protruding to the rear of the vehicle.

  As shown in FIGS. 8 and 10, battery support stays 66 for supporting the battery storage device 64 are coupled to the left and right rear frame portions 14b of the vehicle body frame F at substantially intermediate positions in the vertical direction. The battery support stay 66 extends from the rear frame portion 14b toward the rear side of the vehicle body. Further, a sub-stay 67 extending toward the rear upper side is attached at a position slightly lower than the connecting portion of the battery supporting stay 66 of each of the left and right rear frame portions 14b. The rear end portion of the sub stay 67 is coupled to the rear region of the battery support stay 66 from below.

  A first support bracket 68a and a second support bracket 68b made of a metal plate are attached to the lower regions of the left and right rear frame parts 14b and the corresponding left and right substays 67. The first support bracket 68a is joined to the rear frame portion 14b and the vehicle stay width direction outer region of the sub stay 67, and the second support bracket 68b is joined to the rear frame portion 14b and the vehicle stay width direction inner region of the sub stay 67. As shown in FIG. 10, the upper regions of the first support bracket 68a and the second support bracket 68b are separated from each other by a predetermined width, and the bush 69 is arranged in the separated space. The bush 69 has a rubber elastic body (not shown) attached inside a metal cylinder, and a metal shaft portion 69a is attached to the axial center of the rubber elastic body. The shaft 69a penetrates the bush 69 along the axial direction, and the left and right ends thereof are fastened and fixed to the upper regions of the first support bracket 68a and the second support bracket 68b. An upper support arm 70 is connected to the outer surface of the bush 69 and extends obliquely downward and rearward. As shown in FIG. 10, the upper support arm 70 is formed in a distorted substantially U-shaped cross-sectional shape, and is inclined inward in the vehicle width direction toward the rear side of the vehicle body.

  The upper support arms 70 integrally connected to the bush 69 are provided symmetrically on both sides in the vehicle width direction of the vehicle. The rear ends of the left and right upper support arms 70 are coupled to the left and right ends of a connecting rod 71 that extends linearly in the vehicle width direction.

  The lower regions of the first support bracket 68a and the second support bracket 68b are joined to each other below the left and right rear frame portions 14b. Hereinafter, the joint portion of the lower region will be referred to as a “lower joint portion of the support brackets 68a and 68b”. Both ends of a cross frame 51 extending linearly along the vehicle width direction are joined to the lower joints of the support brackets 68a and 68b on both sides in the vehicle width direction. The cross frame 51 is formed of a round steel pipe having substantially the same diameter as the rear frame portion 14b.

  A pair of rear extension rods 73 extending toward the rear side of the vehicle body are coupled to the cross frame 51. The rearward extending rods 73 are coupled to the rear side surface of the cross frame 51 at two positions separated from each other on the left and right. A support pipe 74 linearly extending in the vehicle width direction is coupled to the rear ends of the left and right rear extension rods 73. A pivot shaft 57 is rotatably inserted in the support pipe 74. Both ends of the pivot shaft 57 are supported by the left and right extending pieces 21b at the front end of the swing arm 20. Therefore, the front end of the swing arm 20 is swingably supported by the support pipe 74. Reference numeral o1 in the figure is an axis of the pivot shaft 57 along the vehicle width direction.

A connecting rod 71, to which the rear end portions of the left and right upper support arms 70 are connected, is coupled to an intermediate region near the rear portion of the left and right rear extension rods 73. Therefore, the intermediate regions of the left and right rear extension rods 73 are supported by the left and right rear frame portions 14b via the pair of upper support arms 70 that extend obliquely upward toward the vehicle front side. In the case of the present embodiment, the left and right upper support arms 70 form a downward inclined portion extending rearward and downward from the rear frame portion 14b.
The arm supporting member 65 in the present embodiment is configured by the cross frame 51, the rearward extending rod 73, the supporting pipe 74, the upper supporting arm 70, the connecting rod 71 and the like described above.

  Here, an installation space 75 in which the electric cable 60 is installed is ensured above the area that straddles the arm support member 65 and the front area of the swing arm 20. The wiring space 75 is a space surrounded by the arm support member 65, the swing arm 20, and the battery storage device 64. Further, the upper support arm 70 (lower inclined portion) of the arm support member 65 and the upper inclined portion 58 of the front region of the swing arm 20 are substantially V-shaped in side view as shown in FIGS. 8 and 11. To form a concave portion 76. The concave portion 76 constitutes a part of the installation space 75, and at least a part of the electric cable 60 is installed.

  In the arm main body portion 21a on the left side of the swing arm 20, the electric cable 60 pulled out forward from the connection portion with the electric motor 30 is a vehicle near the upper left side portion of the pivot shaft 57, as shown in FIGS. The vehicle bends from the left side position in the width direction to the right side and is pulled out forward at the right side position in the vehicle width direction. The electric cable 60 pulled out to the front is connected to the power drive unit 63 in the space on the front side of the rear frame portion 14b. As shown in FIG. 9, at least a portion of the electric cable 60, which is bent from the left side to the right side in the vehicle width direction on the front side of the swing arm 20, overlaps with the axis o1 of the pivot shaft 57 in a top view. Thus, it is arranged in the above-mentioned installation space 75.

  In addition, a part of a region of the electric cable 60 that is bent from the left side to the right side in the vehicle width direction on the front side of the swing arm 20 is provided at the lower end of the battery support frame 110 that forms the skeleton of the battery storage device 64. It is supported. Specifically, as shown in FIGS. 9 to 11, a clamp component 130 that holds the electric cable 60 is attached to a portion of the electric cable 60 that extends below the battery storage device 64 from left to right. The clamp component 130 is fastened and fixed to a cable support bracket 131 (cable support portion) provided at the lower end of the battery support frame 110.

FIG. 12 is a view of the battery support frame 110 as seen from the upper left front part.
Inside the battery support frame 110, as shown in FIG. 8, resin case portions 132F and 132R that detachably accommodate the batteries 62A and 62B are attached. The resin case portions 132F and 132R are arranged side by side in the front and rear in the battery support frame 110. Each of the resin case portions 132F and 132R has an insertion / removal opening 136 (see FIGS. 13 and 15) that opens upward. The battery housing portion in each of the resin case portions 132F and 132R is inclined obliquely downward to the front. The batteries 62A and 62B are set inside the resin case portions 132F and 132R by slantingly sliding them into the resin case portions 132F and 132R through the insertion / removal opening 136. The batteries 62A and 62B are obliquely inserted into and removed from the resin case portions 132F and 132R, so that part of the weight of the batteries 62A and 62B is supported by the wall portions of the resin case portions 132F and 132R.

  The batteries 62A and 62B set in the resin case portions 132F and 132R are fixed to the resin case portions 132F and 132R and the battery support frame 110 by the lock mechanism 133 (battery fixing means) shown in FIG. The portion 41 (see FIG. 17) is connected to the case-side connection terminal 43 (see FIG. 17) in each of the resin case portions 132F and 132R.

  As shown in FIG. 12, the battery support frame 110 supports the first support frame 111 that supports the front resin case portion 132F (see FIG. 8) and the rear resin case portion 132R (see FIG. 8). The second support frame 112 and the connection frame 113 that connects the first support frame 111 and the second support frame 112 are provided.

  The first support frame 111 includes a pair of left and right side frame portions 115L and 115R that extend vertically with a slight inclination to the front and back along the inclined posture (see FIG. 8) of the front resin case portion 132F, and the left and right sides. The cross pipe 116 connects the lower end portions of the frame portions 115L and 115R, and the front frame portion 117 whose both sides are joined to the lower regions of the left and right side frame portions 115L and 115R. The front frame portion 117 has a curved shape that is convex forward and extends in the vehicle width direction. The front frame portion 117 is arranged in the front region of the resin case portion 132F on the front side.

  The left and right side frame portions 115L, 115R have a hat-shaped cross-section that opens inward in the vehicle width direction and extend in the longitudinal direction (generally the vertical direction). Mounting brackets 118 for mounting the battery support frame 110 to the vehicle body frame F (see FIG. 8) are provided at the upper ends of the side frame portions 115L and 115R. The mounting bracket 118 is provided with a female screw portion 118a into which a bolt can be screwed. The mounting bracket 118 is fastened and fixed to the fixed brackets 105 (see FIG. 8 and the like) provided on the corresponding left and right seat frames 15 in front of the rear frame portion 14b of the vehicle body frame F.

  At both ends of the cross pipe 116, female screw portions 116a into which bolts can be screwed are provided. The cable support bracket 131 described above is coupled to the cross pipe 116. The electric cable 60 is held by the cross pipe 116 of the battery support frame 110 via the cable support bracket 131. Both ends of the cross pipe 116 project further outward in the vehicle width direction than the battery 62A and the left and right side frame parts 115L and 115R, and the fixing brackets 106 (FIG. 8) provided on the corresponding left and right rear frame parts 14b of the vehicle body frame F. Etc.) and fastened.

  The second support frame 112 includes a pair of left and right side frame portions 121L and 121R extending vertically with a slight inclination to the front and rear along the inclined posture (see FIG. 8) of the rear resin case portion 132R, and left and right sides. The cross pipe 122 connects the lower end portions of the frame portions 121L and 121R to each other, and the rear frame portion 123 has both side portions joined to the vertical center regions of the left and right side frame portions 121L and 121R. The rear frame portion 123 has a rearwardly convex curved shape and extends in the vehicle width direction. The rear frame portion 123 is arranged in the rear region of the rear resin case portion 132R.

  The left and right side frame portions 121L, 121R have a hat-shaped cross-section that opens inward in the vehicle width direction and extend in the longitudinal direction (generally the vertical direction). Mounting brackets 124 for mounting the battery support frame 110 to the vehicle body frame F (see FIG. 8) are provided at the upper ends of the side frame portions 121L and 121R. The mounting bracket 124 is provided with a female screw portion 124a into which a bolt can be screwed. The mounting brackets 124 are fastened and fixed to the fixing brackets 107 (see FIG. 8 and the like) provided on the corresponding support frames 17 on the left and right of the vehicle body frame F.

  At both ends of the cross pipe 122, female screw portions 122a into which bolts can be screwed are provided. Both ends of the cross pipe 122 project outward of the battery 62B and the left and right side frame portions 121L and 121R in the vehicle width direction, and are fixed brackets 108 (FIG. 8) provided on the corresponding battery support stays 66 on the left and right of the body frame F. Etc.) and fastened.

  The connection frame 113 includes connection side frame parts 127L and 127R for connecting the side frame parts 115L and 121L on the left and right sides of the first support frame 111 and the second support frame 112 and the side frame parts 115R and 121R, and left and right parts. The connecting side frame portions 127L and 127R have a connecting cross frame portion 128 that connects substantially central portions in the front-rear direction. A front resin case portion 132F is arranged on the front side of the connecting cross frame portion 128, and a rear resin case portion 132R is arranged on the rear side of the connecting cross frame portion 128.

<Battery storage device>
FIGS. 13 and 15 are views of the battery storage device 64 seen from diagonally above the front left side, and FIGS. 14 and 16 are views of a part of the battery storage device 64 seen from the left side. 13 and 14 show the battery storage device 64 when the battery is not fixed, and FIGS. 15 and 16 show the battery storage device 64 when the battery is fixed. Note that, in FIGS. 14 and 16, the resin case portion 132F is removed for convenience of illustration. FIG. 17 is a view showing a cross section taken along line XVII-XVII in FIG.
As shown in FIG. 17, each of the batteries 62A and 62B has a terminal portion 41 in the recessed portion on the lower surface thereof. The terminal portion 41 is arranged on the lower surface of each battery 62A, 62B near the front portion. The terminal portion 41 is electrically connected to the power drive unit 63 and a control unit (not shown) through a case side connection terminal 43 provided in the battery storage device 64. The terminal portion 41 supplies the battery voltage to the electric motor 30 via the power drive unit 63 (see FIG. 2) and outputs information on the batteries 62A and 62B (information such as voltage and temperature) to the control unit.

The battery storage device 64 includes a battery case 42 that stores the batteries 62A and 62B, a case-side connection terminal 43 that is connected to the terminal portions 41 of the batteries 62A and 62B when the batteries 62A and 62B are stored, and a case-side connection terminal 43. , A terminal displacing mechanism 45 for displacing between a connection position P1 (see FIGS. 17, 25, and 26) that is in contact with the terminals 41 of the batteries 62A and 62B and a retracted position P2 that is spaced downward from the connection position P1. , A lock mechanism 133 capable of fixing and holding the batteries 62A and 62B in the battery case 42, and an operation lever 44 (which can switch the lock mechanism 133 between a battery fixed state and a battery non-fixed state and can operate the terminal displacement mechanism 45 ( Operation member).
Note that, as shown in FIG. 17, when the bottom portion 62-B of the battery 62A (62B) and the case-side contact portion 42-B of the battery case 42 are in contact with each other, the retracted position P2 is such that the case-side connection terminal 43 is in contact with the battery. It is a position away from the terminal portion 41 of 62A (62B) in the approach direction (downward) of the battery 62A (62B).

  The battery case 42 is provided with the above-described battery support frame 110, the support stays 135 that are fastened and fixed to the upper portions of the front and rear side frame portions 115L and 115R, and 121L and 121R of the battery support frame 110 (see FIGS. 14 and 16). ) And the resin case portions 132F and 132R arranged in the front and rear of the battery support frame 110. The case-side connection terminal 43 and the terminal displacement mechanism 45 are arranged on the respective lower sides of the front and rear resin case portions 132F and 132R. The operation lever 44 and the lock mechanism 133 are provided corresponding to the case-side connection terminals 43 and the terminal displacement mechanism 45 on the lower side of the front and rear resin case portions 132F and 132R, respectively. The case-side connection terminals 43 corresponding to the front and rear resin case portions 132F and 132R, the terminal displacement mechanism 45, the operation lever 44, the lock mechanism 133, and the like have the same configuration. Hereinafter, regarding these details, only those corresponding to the front resin case portion 132F will be described, and description of those corresponding to the rear resin case portion 132R will be omitted.

  As shown in FIG. 17, the terminal portion 41 of the battery 62A (62B) controls a pair of high voltage terminals 47 that outputs the power of the battery 62A (62B) to the power drive unit 63, and various information of the battery 62A (62B). It has a plurality of signal terminals 48 for outputting to the unit.

  As shown in FIGS. 13 and 15, the resin case portions 132F and 132R have an insertion / removal opening 136 that opens upward, and the batteries 62A and 62B can be stored and taken out through the insertion / removal opening 136. . The front and rear resin case portions 132F and 132R are both inclined forward toward the lower side. The bottom walls of the resin case portions 132F and 132R are inclined downward toward the rear, as shown in FIG.

  As shown in FIGS. 13 and 15, a peripheral wall 137 a of the luggage box 137 is arranged above the battery support frame 110. The luggage box 137 is a resin box in which the box body is located behind the battery storage device 64 and in which articles can be stored. The peripheral wall 137a of the luggage box 137 extends forward from the box body of the luggage box 137, and is located on the left and right sides of the upper and lower resin case portions 132F and 132R of the battery storage device 64 and on the front side of the front resin case portion 132F. Surrounds. An upper portion of the peripheral wall 137a of the luggage box 137 is closed by a seat 8 for seating an occupant (see FIGS. 1, 27 and 28). The seat 8 can be opened and closed vertically with the front end side serving as a hinge fulcrum. The upper part of the luggage box 137 and the battery storage device 64 is opened and closed by the seat 8.

  As shown in FIG. 17, an opening 138 that allows the case-side connection terminal 43 to be inserted and removed from below is provided on the bottom wall of the resin case 132F (132R) near the front. Below the opening 138, a case-side connection terminal 43 and a terminal support block 139 that integrally supports the case-side connection terminal 43 are arranged so as to be able to move up and down.

FIG. 18 is a view of the case-side connection terminal 43 and its supporting portion as viewed obliquely from above.
As shown in FIGS. 17 and 18, the case-side connection terminal 43 includes a pair of high-voltage terminal pins 140 that can be fitted and connected to the high-voltage terminal 47 on the battery 62A (62B) side, and a signal terminal on the battery 62A (62B) side. It has a plurality of signal terminal pins 141 that can be fitted and connected to 48. The high voltage terminal pins 140 and the signal terminal pins 141 are arranged side by side in a row along the vehicle width direction. The high voltage terminal pins 140 are arranged outside the plurality of signal terminal pins 141 in the vehicle width direction. Each high-voltage terminal pin 140 arranged on both sides in the vehicle width direction has an upper end higher than an upper end of the signal terminal pin 141. For this reason, when the case side connection terminal 43 is displaced integrally with the terminal support block 139 from the retracted position P2 to the connection position P1, the high voltage terminal pin 140 is located on the battery 62A (62B) side prior to the signal terminal pin 141. Contact 41.

  Further, at the lower end of the terminal support block 139, a cable connecting wall 143 for connecting the power cable 142 (electric wire) to the high voltage terminal pin 140 and a signal for connecting the signal line 144 (electric wire) to the signal terminal pin 141. A line connecting portion 145 is provided. The cable connection walls 143 are arranged outside the signal line connection portions 145 in the vehicle width direction. A bolt 146 for connecting the metal conductor of the power cable 142 to the high-voltage terminal pin 140 is fastened to the cable connection wall 143 from the outside in the vehicle width direction. The bolt 146 constitutes a fixing means for electrically connecting the power cable 142 to the high-voltage terminal pin 140 and physically and firmly connecting and fixing the same.

  A cable support bracket 201 is attached to the terminal support block 139 as shown in FIG. The cable support bracket 201 holds the power cable 142 and the signal line 144 which are bundled by the clamp device 202. The cable support bracket 201 is supported by a stay (not shown) projecting downward from a lower end of the terminal support block 139 near one side in the vehicle width direction. The cable support bracket 201 extends downward from the terminal support block 139 side and is then curved in a substantially J shape in the vehicle width direction so as to be along the direction in which the power cable 142 and the signal line 144 are drawn out. The clamp device 202 is supported on the distal end side of the curved portion of the cable support bracket 201. The lower end of the cable support bracket 201 and the clamp device 202 are located below the cable connection wall 143 and the signal line connection portion 145 of the terminal support block 139.

  A pair of guide protrusions 147, which are case-side guide portions, are provided so as to project upward at positions outside the case-side connection terminals 43 of the terminal support block 139 in the vehicle width direction. The guide protrusion 147 is formed in a substantially columnar shape as a whole, and has a spherical curved surface or a tapered taper surface at the tip thereof. The left and right guide protrusions 147 project above the upper ends of the high-voltage terminal pin 140 and the signal terminal pin 141 of the case-side connection terminal 43.

  On the other hand, a pair of guide holes 148 capable of receiving the left and right guide protrusions 147 on the terminal support block 139 side are provided on the lower surface of the battery 62A (62B) housed in the resin case portion 132F (132R). The guide hole 148 constitutes a battery side guide portion. Here, when the case side connection terminal 43 is raised toward the connection position P1 (see FIGS. 17, 25, and 26) with the battery 62A (62B) housed in the resin case portion 132F (132R), The guide protrusion 147 is inserted into the guide hole 148 before the case-side connection terminal 43 is contact-connected to the terminal portion 41 of the battery 62A (62B). In the case of the present embodiment, when the case-side connecting terminal 43 is in the retracted position P2, the guide protrusion 147 has a separation distance L1 between the guide protrusion 147 and the contact portion of the guide hole 148, and the case-side connecting terminal 43 and the battery 62A. It is set to be shorter than the separation distance L2 of the terminal portion 41 of (62B). As shown in FIG. 17, the upper end 147e of the guide protrusion 147, which is the guide end of the guide protrusion 147 in the battery direction, is higher than the upper end 140e of the high-voltage terminal pin 140, which is the terminal end of the case-side connection terminal 43 in the battery direction. It is formed on the side (battery side).

  The terminal displacement mechanism 45 includes a terminal holding member 149 that holds the case-side connection terminal 43 via the terminal support block 139. The terminal holding member 149 is made of a metal plate material, and has a base wall 149a extending along the vehicle width direction, and a pair of left and right sides extending and bending upward from both ends of the base wall 149a in the vehicle width direction. And a connection wall 149b. A long hole-shaped insertion hole 150 is formed in a central region of the base wall 149a in the vehicle width direction. On the lower surface side of the base wall 149a, a connection pin 151 and a terminal support block 139 are held via a spring unit 152. A part of the terminal support block 139 held by the base wall 149a and the case-side connection terminal 43 project through the insertion hole 150 to the upper side of the base wall 149a.

  Insertion holes 153 into which the connection pins 151 are inserted are formed at both edges of the terminal support block 139 in the vehicle width direction. The inner diameter of the insertion hole 153 is formed to be larger than the outer diameter of the connecting pin 151. The terminal support block 139 is displaceable in a substantially horizontal direction (direction intersecting with the connection direction to the terminal portion 41) within the range of the gap between the insertion hole 153 and the connecting pin 151. Therefore, the case-side connection terminal 43 supported by the terminal support block 139 is held by the terminal holding member 149 so as to be relatively displaceable in the direction intersecting the connecting direction with the terminal portion 41.

  The connecting pin 151 is slidably inserted into a support hole 198 provided in the base wall 149a of the terminal holding member 149. A retaining flange 151a is integrally provided on the upper end of the connecting pin 151. The connecting pin 151 is prevented from coming off from the base wall 149a by the retaining flange 151a contacting the upper surface of the base wall 149a.

  The spring unit 152 includes a metal unit case 154 having a bottomed cylindrical shape, a disk-shaped stopper plate 155 capable of contacting the open end of the unit case 154, and an inner bottom surface of the unit case 154 and the stopper plate 155. And a coil spring 156 which is an elastic member interposed in the. The spring unit 152 is arranged below the base wall 149a with the outer bottom surface of the unit case 154 being in contact with the lower surface of the base wall 149a. The connecting pin 151 penetrates the bottom wall of the unit case 154 and is coupled to the stopper plate 155 below the unit case 154. Further, the coil spring 156 is arranged in the peripheral area of the connecting pin 151.

  The case-side connection terminal 43 and the terminal support block 139 are suspended and supported by the terminal holding member 149 via the spring unit 152 and the connecting pin 151. The unit case 154 and the stopper plate 155 are maintained in a separated state until a pressing load of a predetermined amount or more is input to the case-side connection terminal 43 from above. When a pressing load of a predetermined amount or more is input to the case-side connection terminal 43 from this state, the terminal support block 139 compressively displaces the coil spring 156 and relatively displaces downward relative to the terminal holding member 149. In this way, when the terminal support block 139 is relatively displaced with respect to the terminal holding member 149 by a predetermined amount or more, the stopper plate 155 contacts the unit case 154, whereby the terminal support block 139 (case-side connection terminal 43) for the terminal holding member 149. The relative displacement of is restricted (see FIG. 26).

The left and right connecting walls 149b of the terminal holding member 149 are rotatably held by the lower end of the metal link plate 157 in the lower region outside the side of the resin case portion 132F (132R). The link plate 157 is a plate member that extends in a substantially vertical direction and is long in one direction. The upper ends of the left and right link plates 157 are rotatably connected to the ends of the left and right lever pieces 44a of the operation lever 44, which is an operation member. Intermediate regions in the extending direction of the left and right lever pieces 44a are pivotally supported by the left and right support stays 135 attached to the battery support frame 110. The left and right link plates 157 are pulled up by the operation lever 44 being rotated in one direction (clockwise direction in FIGS. 14 and 16), whereby the left and right of the terminal holding member 149 are moved. Each connecting wall 149b is displaced upward. At this time, the case-side connection terminal 43 held by the terminal holding member 149 is displaced from the retracted position P2 to the connection position P1.
Reference numeral 197 in FIGS. 14 and 16 is a reinforcing frame that is attached near the lower ends of the left and right support stays 135 and reinforces the peripheral area of the resin case portion 132F (132R).

The lower ends of the left and right link plates 157 and the left and right connecting walls 149b of the terminal holding member 149 are linked by inserting a turning pin 158 into the long hole 159, as shown in FIG. The turning pin 158 is supported by the left and right connecting walls 149b, and the elongated hole 159 is formed in the link plate 157. Therefore, when the link plate 157 is pulled up by the operation of the operation lever 44, as shown in (I) and (II) of FIG. 17B, the rotation pin is moved by a predetermined stroke of the link plate 157. 158 floats in the long hole 159. As a result, the timing at which the terminal holding member 149 starts upward displacement is delayed with respect to the start of the operation of the operation lever 44.
Note that FIG. 17B is a diagram showing an operating state of the E section in FIG. 17A.

  The lock mechanism 133 for fixing the battery 62A (62B) to the battery case 42 includes a movable block 160. The movable block 160 is rotatably (displaceably) attached to the upper ends of the left and right support stays 135 of the battery case 42. When the operation lever 44 rotates from the initial position to a predetermined position range, the movable block 160 receives an operation force from the operation lever 44 and rotates in the upper surface direction of the battery case 42. The movable block 160 is pressed against the upper surface of the battery 62A (62B) and regulates the displacement of the battery 62A (62B) in the removal direction.

FIG. 19 is a view of the operation lever 44 and the movable block 160 seen from the upper right front of the left support stay 135.
The operation lever 44 is rotatably supported by the support stay 135 about the first rotation shaft 162. The first rotation shaft 162 is a shaft that is axially supported by a portion of the support stay 135 in the substantially vertical center of the support stay 135 near the front portion, and is arranged along the vehicle width direction of the vehicle. Note that in some of the drawings, only the axis o1 of the first rotation shaft 162 is shown.

  The movable block 160 of the lock mechanism 133 is rotatably supported by the support stay 135 about a second rotating shaft 163 orthogonal to the first rotating shaft 162. The second rotation shaft 163 is a shaft pivotally supported by the upper end portion of the support stay 135, and is arranged along the front-rear direction of the vehicle.

  In the case of the present embodiment, the first rotation shaft 162 is arranged such that the axis line o1 of the first rotation shaft 162 overlaps the battery 62A (62B) housed in the resin case portion 132F (132R) (FIG. 20 (c), FIG. 22 (c), FIG. 24 (c), etc.). The second rotation shaft 163 is arranged such that the axis o2 of the second rotation shaft 163 is located outside the battery 62A (62B) housed in the resin case portion 132F (132R) (FIG. 20 (c), FIG. 22 (c), FIG. 24 (c), etc.).

  The operation lever 44 includes an operation piece 44b extending along the vehicle width direction, and left and right lever pieces 44a bent and extending in substantially orthogonal directions from both ends of the operation piece 44b. An intermediate region in the extending direction of the left and right lever pieces 44a is supported by the left and right support stays 135 by the first rotating shaft 162. The left and right lever pieces 44a are formed by bending in a substantially L-shape (a substantially L-shape with a tip protruding forward) in a side view. Hereinafter, the operation piece 44b side with the bent portion of the lever piece 44a sandwiched therebetween will be referred to as a first extension portion 44a-1, and the operation piece 44b opposite to the operation piece 44b with the bent portion sandwiched will be referred to as a second extension piece 44a-2. And The left and right lever pieces 44a are supported by the support stay 135 via the first rotation shaft 162 at a substantially intermediate position in the extending direction of the second extension piece 44a-2. The upper end of the link plate 157 is rotatably connected to the tip of the second extending piece 44a-2 via a connecting pin 164.

  Here, as shown in FIG. 19, the movable block 160 of the lock mechanism 133 includes a pivot portion 160a, a displacement regulation wall 160b (battery regulation portion), an elastic block 160c (battery regulation portion), and a holding force receiving wall. It has 160d (holding force receiving portion) and a cam wall 160e. The pivot portion 160a is rotatably supported by the second rotation shaft 163. The displacement regulating wall 160b is connected to the pivotally supporting portion 160a and is capable of regulating the displacement of the battery 62A (62B) in the rising direction when displaced to the inner region of the resin case portion 132F (132R). The elastic block 160c is attached to one surface of the displacement regulating wall 160b, and directly contacts the upper surface of the battery 62A when the displacement regulating wall 160b regulates the displacement of the battery 62A (62B) in the rising direction. At this time, the elastic block 160c is elastically deformed to exert an elastic force on the upper surface of the battery 62A.

  The displacement restricting wall 160b of the movable block 160 and the elastic block 160c (battery restricting portion) are located outside the batteries 62A and 62B in the battery non-fixed state when viewed from the insertion direction of the batteries 62A and 62B into the resin case portion 132F (132R). It is positioned (see FIG. 20 (c)) and overlaps the batteries 62A and 62B in the battery fixed state (see FIGS. 22 (c) and 24 (c)).

  The holding force receiving wall 160d is connected to the pivotally supporting portion 160a, and extends around the second rotation shaft 163 in a direction substantially perpendicular to the displacement regulating wall 160b. The holding force receiving wall 160d receives a holding load from the lever piece 44a of the operation lever 44, and maintains the state in which the displacement regulating wall 160b and the elastic block 160c regulate the displacement of the battery 62A (62B) in the rising direction. The cam wall 160e is a wall that connects the displacement regulating wall 160b and the holding force receiving wall 160d on the front side thereof, and the rear surface 160d-1 (holding force receiving face) of the holding force receiving wall 160d from the displacement regulating wall 160b side. It has a cam surface 160e-1 that smoothly continues in the direction.

  In the case of the present embodiment, the holding force receiving wall 160d (holding force receiving portion) is configured to overlap the lever piece 44a of the operation lever 44 in the battery fixed state when viewed in the direction along the first rotation shaft 162. (See Figure 19).

  The movable block 160 of the lock mechanism 133 has a lock release position in which the displacement regulating wall 160b and the elastic block 160c are flipped upward in response to the turning operation of the operation lever 44, and the displacement regulating wall 160b and the elastic block 160c are made of a resin case. It is rotatable between a lock position in which the portion 132F (132R) is tilted inward by about 90 ° and an inward direction. The lock mechanism 133 is in the battery non-fixed state when the displacement regulating wall 160b and the elastic block 160c are in the unlocked position, and is in the battery fixed state when the displacement regulating wall 160b and the elastic block 160c are in the locked position. Each movable block 160 is constantly urged in the flip-up direction by a spring (not shown).

  In the battery non-fixed state, the operation lever 44 is tilted forward to the maximum, and at this time, the operation piece 44b of the operation lever 44 is displaced forward of the insertion / extraction opening 136 (inner wall) of the resin case portion 132F (132R). There is. The position of the operating lever 44 at this time is called the initial position. Further, when the battery is fixed, the operation lever 44 is raised to the rear upper side, and at this time, the operation piece 44b of the operation lever 44 is displaced to a position above the insertion / extraction opening 136 of the resin case portion 132F (132R).

  A cam protrusion 165 that bulges rearward is formed on the first extending portion 44a-1 of the lever piece 44a of the operating lever 44. The cam projection 165 contacts the cam surface 160e-1 of the movable block 160 in the flipped-up state when the operation lever 44 is raised from the initial position to the upper rear side, and slides on the cam surface 160e-1. The movable block 160 is pressed in the rotating direction. As a result, the movable block 160 is rotated from the unlocked position to the locked position. In this way, when the raising operation of the operating lever 44 progresses and the contact portion of the cam projection 165 reaches the end position of the cam surface 160e-1, the inner surface of the lever piece 44a (the surface facing inward in the vehicle width direction) is moved to the movable block 160. It comes into contact with the back surface 160d-1 of the holding force receiving wall 160d. This state continues until the operation lever 44 reaches the maximum pull-up operation position.

  By the way, the lock mechanism 133 and the terminal displacement mechanism 45 are operated by the common operation lever 44. The operating states of the lock mechanism 133 and the terminal displacement mechanism 45 are determined by the turning operation position of the operation lever 44. In the terminal displacement mechanism 45 and the lock mechanism 133, the lock mechanism 133 fixes the battery 62A (62B) by the operation of the operation lever 44, and in that state, the terminal displacement mechanism 45 displaces the case side connection terminal 43 to the connection position P1. Are linked to each other.

Next, referring to FIGS. 20 to 26, after inserting the battery 62A (62B) into the resin case portion 132F (132R), the battery 62A (62B) is fixed to the resin case portion 132F (132R), and A series of operations for connecting the case side connection terminal 43 to the terminal portion 41 of the battery 62A (62B) will be described.
The state shown in FIG. 20 is in the initial position where the operation lever 44 is tilted to the maximum forward. At this time, the tip end portion of the lever piece 44a of the operation lever 44 is located at the lowest position, and the link plate 157 and the terminal holding member 149 of the terminal displacement mechanism 45 are also displaced to the lowest position. The battery 62A (62B) is inserted in the resin case portion 132F (132R) in this state. At this time, the case side connection terminal 43 is located at the retracted position P2 as shown in FIG. In addition, the movable block 160 of the lock mechanism 133 is located at the unlocked position that is flipped up.

When the operating lever 44 is operated by being raised from this state, as shown in FIG. 21, the cam projection 165 of the operating lever 44 abuts on the cam surface 160e-1 of the movable block 160 and slides on the cam surface 160e-1. Meanwhile, the movable block 160 is rotated in the lock position direction.
At the beginning of the operation of the operation lever 44, the link plate 157 is pulled up by the lever piece 44a, but since there is play due to the long hole 159 between the link plate 157 and the terminal holding member 149 as described above, at this time the terminal The start of the upward displacement of the holding member 149 is delayed.

  When the raising operation of the operation lever 44 progresses, as shown in FIG. 22, the movable block 160 rotates and the elastic block 160c of the movable block 160 comes into contact with the upper surface of the battery 62A. At this time, the terminal holding member 149 of the terminal displacement mechanism 45 is displaced upward by being pulled up by the operation lever 44 via the link plate 157. At this time, as shown in FIG. 23, the guide protrusion 147 of the terminal support block 139 is fitted into the guide hole 148 on the lower surface side of the battery 62A (62B), whereby the terminal support block 139 and the case side connection terminal 43 are connected. The position in the direction intersecting the terminal connection direction is finely adjusted.

  When the raising operation of the operation lever 44 further proceeds, as shown in FIG. 24, the lever piece 44a of the operation lever 44 goes around and comes into contact with the back surface side of the holding force receiving wall 160d of the movable block 160. As a result, the displacement restricting wall 160b of the movable block 160 rotates to a predetermined displacement restricting position and restricts the displacement of the battery 62A (62B) in the floating direction via the elastic block 160c. At this time, as shown in FIG. 25, the terminal holding member 149 of the terminal displacement mechanism 45 is further raised by pulling up by the operation lever 44 via the link plate 157, and the case side connection terminal 43 is displaced to the connection position P1. As a result, the case-side connection terminal 43 is fitted and connected to the terminal portion 41 of the battery 62A (62B).

When the operation lever 44 is further operated in the raising direction by a predetermined amount from the state shown in FIG. 24, in the terminal displacement mechanism 45, the terminal holding member 149 is displaced further upward as shown in FIG. At this time, the coil spring 156 of the spring unit 152 is compressed and the case-side connection terminal 43 is pressed against the terminal portion 41 of the battery 62A (62B) with a predetermined load. As a result, the lock of the battery 62A (62B) by the lock mechanism 133 and the terminal connection by the terminal displacement mechanism 45 are completed.
In addition, in the case of the present embodiment, when the operation lever 44 is operated to the operation completion position, a click sound such as a tapping sound is generated at an arbitrary position in the battery storage device 64 to complete the operation to the operator. Is provided.

FIG. 27 is a partial cross-sectional side view showing the battery storage device 64 and the seat 8 when the operation lever 44 is in a state before the operation is completed. FIG. 28 is a partial cross-sectional side view showing the battery storage device 64 and the seat 8 when the operation lever 44 is in the operation completed state.
As shown in these figures, the seat 8 has a hinge shaft 170 along the vehicle width direction on the front end side, and is supported rotatably on the vehicle body about the hinge shaft 170. In addition, a pair of protrusions 171A and 171B are provided on the back surface of the sheet 8 so as to be spaced apart from each other in the front and rear. The protrusions 171A and 171B protrude downward from the back surface of the sheet 8. When the front and rear operation levers 44 of the battery storage device 64 are completely operated to the operation completion position, the pair of protrusions 171A and 171B do not contact the operation levers 44, as shown in FIG. It is provided so as to enter the space on the front side of. Further, the pair of protrusions 171A and 171B contact the upper surface of the operation piece 44b of the operation lever 44, as shown in FIG. 27, when the operation lever 44 on the front and rear of the battery storage device 64 is in a state before the operation is completed. It is set. Therefore, when one of the operation levers 44 is not completely operated to the operation completion position, the closing of the seat 8 is blocked by the protrusions 117A and 117B. Therefore, the operator can be notified that the operation lever 44 has not reached the operation completion position.

Depending on the position of the operation lever 44, the projections 171A and 171B may come into contact with the upper surface of the operation piece 44b of the operation lever 44 during the closing operation of the seat 8 to push the operation lever 44 to the operation completion position. .
Further, in the case of the present embodiment, when the front and rear operation levers 44 are at the initial positions, the protrusions 117A and 117B on the seat 8 side do not enter the space on the rear side of the operation levers 44 and come into contact with the operation levers 44. It is set.

  As shown in FIG. 29, bottom walls 132Fb and 132Rb inclined rearward and downward are provided at the lower ends of the resin case portions 132F and 132R. The cross pipes 116 and 122 of the battery support frame 110 are arranged in proximity to each other below the center of the bottom walls 132Fb and 132Rb in the front-rear direction. Case support brackets 116b and 122b extending rearward are fixed to the cross pipes 116 and 122, respectively. Fastening portions 134b (see FIG. 30), which will be described later, of the bottom walls 132Fb and 132Rb are fastened and fixed to the case support brackets 116b and 122b.

  The case-side connection terminal 43 is arranged on the front side of each of the bottom walls 132Fb, 132Rb (in front of the cross pipes 116, 122). When the case-side connection terminal 43 is at the connection position P1 (shown by the solid line in the figure), the case-side connection terminal 43 projects above the upper surfaces of the bottom walls 132Fb and 132Rb and is connected to the terminal portions 41 of the batteries 62A and 62B. When the case-side connection terminal 43 is in the retracted position P2 (shown by a chain line in the figure), the case-side connection terminal 43 is recessed below the upper surfaces of the bottom walls 132Fb and 132Rb, and is separated from the terminal portion 41 of the batteries 62A and 62B.

On the rear side of each of the bottom walls 132Fb, 132Rb (rearward of the cross pipes 116, 122), there is provided a draining section 180 capable of discharging the water that has entered the resin case sections 132F, 132R to the outside of the case.
Hereinafter, description will be given with reference to FIGS. 30 to 32 show the configuration corresponding to the front resin case portion 132F, and in the following description, the configuration corresponding to the front resin case portion 132F will be described unless otherwise specified. The configuration corresponding to the rear resin case portion 132R is similar to that of the front resin case portion 132F, and the description thereof is omitted. The center line CL in FIG. 30 indicates the left-right center (also the vehicle body left-right center) of the battery 62B and the resin case portion 132F.

  With reference to FIGS. 30 and 32, cushion rubbers RB are attached to the four corners of the lower end of the battery 62B so that the flattened spherical bulging surfaces project from the lower end of the battery 62B. At the four corners of the bottom wall 132Fb, recesses 134a that form recesses that substantially match the bulging surfaces of each cushion rubber RB are provided. A fastening portion 134b is provided on the rear side of the bottom wall 132Fb so as to be continuous with the front side of the left and right recesses 134a and the inner side in the vehicle width direction.

  With reference to FIG. 32, the fastening portion 134b has a bottomed tubular shape that discharges downward, and the lower surface of the fastening portion 134b contacts the upper surface of the case support bracket 116b. A bolt B1 (see FIG. 30) is inserted through the fastening portion 134b from above, and the bolt B1 is screwed to the case support bracket 116b. As a result, the bottom wall 132Fb of the resin case portion 132F is fastened and fixed to the case support bracket 116b.

  Referring to FIG. 30, a locking portion 134c is provided on the front side of the bottom wall 132Fb adjacent to the rear side of the left and right recesses 134a and slightly outside in the vehicle width direction. The locking portion 134c is fixed by locking the front side of the upper end of a protection member 189 described later, for example.

  Referring to FIG. 31 and FIG. 32 together, the water draining portion 180 cuts the water draining hole 181 formed in the curved concave surface of the bottom wall 132Fb, for example, the left corner, and the lower left portion of the left and right fastening portions 134b, for example. And a second drainage hole 182, which is formed by cutting away. Below the water draining hole 181, a nozzle 181a protruding downward from the bottom wall 132Fb is connected.

  Water droplets and the like that have entered the resin case portion 132F are guided to the water draining portion 180 along the inclination of the bottom wall 132Fb, and are discharged to the outside of the case from any of the water draining holes 181 and 182. By providing the water drainage hole 181 on the left side of the bottom wall 132Fb and the second water drainage hole 182 on the left side of the concave fastening portion 134b as well, the motorcycle 1 stopped by tilting the vehicle body to the left side using the side stand. Even in the state, the water that has entered the case is well discharged from the drain holes 181 and 182.

  Referring to FIG. 29, the case-side connection terminal 43 and the bottom wall 132Fb at the retracted position P2 form a recess 185 that is recessed forward and upward in a side view below the resin case portion 132F. A cross pipe 116 extending in the vehicle width direction of the battery support frame 110 is arranged in the recess 185. The cross pipe 116 reduces the influence of disturbance from the side of the vehicle on the periphery of the case-side connection terminal 43 at the retracted position P2. Further, the cross pipe 116 for protecting the case-side connection terminal 43 can be efficiently and compactly arranged.

  The case-side connection terminal 43 and the cross pipe 116 at the retracted position P2 are arranged so as to overlap each other when viewed in the vehicle front-rear direction. The case-side connection terminal 43 located at the retracted position P2 largely protrudes below the resin case portion 132F by being recessed below the bottom wall 132Fb. The cross pipe 116 suppresses the influence of disturbance from the front of the vehicle on the case-side connection terminal 43. When the cross member is located in front of the case-side connecting terminal 43, the influence of disturbance on the case-side connecting terminal 43 from the rear of the vehicle can be suppressed.

  A cable support bracket 131 that supports the electric cable 60 leading to the electric motor 30 is fixed to the cross pipe 116. Although the electric cable 60 is thick and rigid, the electric cable 60 is firmly supported by the cross pipe 116 via the cable support bracket 131. The cable support bracket 131 is located below the rear end portion of the resin case portion 132F and holds the electric cable 60 therebelow. The cable support bracket 131 holds a portion (left and right crossing portion) of the electric cable 60 which extends below the battery storage device 64 from left to right. The left-right crossing portion of the electric cable 60 and the cable support bracket 131 are arranged between protective members 189 to be described later attached to the bottom walls 132Fb and 132Rb of the front and rear resin case portions 132F and 132R.

  Here, the battery storage device 64 includes an operation lever 44 (see FIG. 14 and the like) as a link mechanism capable of operating the case side connection terminal 43 upward. By swinging the operating lever 44 from the front to the rear, the case-side connection terminal 43 moves from the retracted position P2 toward the connection position P1 and is inserted into the terminal portion 41 of the battery 62B. The first rotation shaft 162 that supports the operation lever 44 is supported by the battery support frame 110 outside the battery case 42 in the vehicle width direction. As a result, the support rigidity of the operating lever 44 is increased and the operational feeling is improved.

  Referring to FIG. 29, the battery storage device 64 includes a protection member 189 that surrounds the case-side connection terminal 43 located at the retracted position P2. The protective member 189 has, for example, a rectangular parallelepiped external shape, is opened upward, and is attached to the lower portion of the resin case portion 132F from below so as to cover the periphery of the case-side connection terminal 43 with a space. The protection member 189 is arranged so as to project below the bottom wall 132Fb of the resin case portion 132F. A battery support stay 66 and a sub-stay 67 of the vehicle body frame F are arranged outside the protective member 189 in the vehicle width direction. The protection member 189 is arranged so as to overlap the battery support stay 66 and the sub stay 67 in a side view. The protective member 189 is made of synthetic resin (insulating member) and prevents the body frame from coming into contact with the terminals even if the body frame is deformed by an impact from the side surface of the vehicle.

  As described above, the battery storage device 64 of the present embodiment includes the battery case 42 that stores the batteries 62A and 62B, and the case-side connection terminals that are connected to the terminal portions 41 of the batteries 62A and 62B that are stored in the battery case 42. 43, and a terminal displacement mechanism 45 that displaces the case-side connection terminal 43 between a connection position P1 that connects the case-side connection terminal 43 to the terminal portion 41 of the batteries 62A and 62B and a retracted position P2 that is separated from the connection position P1. ing. The battery case 42 supports the resin case portions 132F and 132R by the battery support frame 110, and is attached to the vehicle body frame F via the battery support frame 110. Bottom walls 132Fb and 132Rb inclined rearward and downward are provided at the lower ends of the resin case portions 132F and 132R, and water that has entered the resin case portions 132F and 132R can be discharged to the rear side of the bottom walls 132Fb and 132Rb. A drainage unit 180 is provided. The case-side connection terminal 43 is arranged on the front side of the water draining portion 180 of the bottom walls 132Fb and 132Rb, and the case-side connection terminal 43 projects above the bottom walls 132Fb and 132Rb at the connection position P1 and the battery 62A, It is connected to the terminal portion 41 of the battery 62B, and at the retreat position P2, it is recessed below the bottom walls 132Fb and 132Rb and is separated from the terminal portion 41 of the batteries 62A and 62B. A recess 185 is formed below the resin case portions 132F and 132R by the case-side connection terminal 43 and the bottom walls 132Fb and 132Rb at the retracted position P2, and the recess 185 has a cross extending in the vehicle width direction of the battery support frame 110. Pipes 116 and 122 are arranged.

According to this configuration, water droplets and the like that have entered the resin case portions 132F and 132R are guided to the water draining portion 180 on the rear side of the bottom walls 132Fb and 132Rb by the inclination of the bottom walls 132Fb and 132Rb, and from the water draining portion 180. It is discharged outside the case. Therefore, it is possible to suppress water from splashing on the case-side connection terminal 43 on the front side of the bottom walls 132Fb and 132Rb.
Further, the periphery of the case-side connection terminal 43 that moves up and down with respect to the bottom walls 132Fb and 132Rb of the resin case portions 132F and 132R is affected by the disturbance from the vehicle side due to the cross pipes 116 and 122 of the battery support frame 110. It will be difficult. Therefore, the connection state and operability of the case-side connection terminal 43 can be favorably maintained.
Further, since the cross pipes 116 and 122 of the battery support frame 110 are arranged in the recess 185 formed by the case side connection terminal 43 and the bottom walls 132Fb and 132Rb at the retracted position P2, the case side connection terminal 43 is protected. It is possible to efficiently and compactly arrange the cross pipes 116 and 122, and to suppress the influence of disturbance from the side of the vehicle on the case side connection terminal 43 separated from the terminal portion 41 of the batteries 62A and 62B.

  The present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the scope of the invention.

  Further, the vehicle that employs the battery storage device of the present invention is not limited to a motorcycle, but also includes a saddle-type three-wheel vehicle having two front wheels and one rear wheel, a four-wheel vehicle, and the like.

1 motorcycle (saddle-type electric vehicle)
30 electric motor 41 terminal part 42 battery case 43 case side connection terminal 44 operation lever (link mechanism)
45 Terminal Displacement Mechanism 60 Electric Cable 62A, 62B Battery 64 Battery Storage Device 110 Battery Support Frame 116, 122 Cross Pipe (Cross Member)
131 Cable support bracket (Cable support)
132F, 132R Resin case part (case body)
132Fb, 132Rb Bottom wall 162 First rotation shaft (support portion)
180 Drain portion 181 Drain hole 182 Second drain hole 189 Protective member P1 connection position P2 Retracted position F Body frame

Claims (7)

A battery case (42) for accommodating the batteries (62A, 62B),
A case side connection terminal (43) connected to a terminal portion (41) of the battery (62A, 62B) housed in the battery case (42);
A connection position (P1) for connecting the case side connection terminal (43) to the terminal portion (41) of the battery (62A, 62B); and a retracted position (P2) separated from the connection position (P1). A battery displacing device (64) for an electric vehicle, comprising:
The battery case (42) supports the case bodies (132F, 132R) by a battery support frame (110), and is attached to the vehicle body frame (F) via the battery support frame (110).
At the lower end of the case body (132F, 132R), a bottom wall (132Fb, 132Rb) inclined rearward and downward is provided,
On the rear side of the bottom wall (132Fb, 132Rb), a drainage part (180) capable of discharging water that has entered the case body (132F, 132R) is provided,
The case side connection terminal (43) is arranged on the front side of the bottom wall (132Fb, 132Rb) with respect to the water draining portion (180),
The case-side connection terminal (43) protrudes above the bottom wall (132Fb, 132Rb) at the connection position (P1) and is connected to the terminal portion (41) of the battery (62A, 62B), and is retracted. At the position (P2), the bottom wall (132Fb, 132Rb) is recessed below and separated from the terminal portion (41) of the battery (62A, 62B).
A recess (185) is formed below the case body (132F, 132R) by the case side connection terminal (43) and the bottom wall (132Fb, 132Rb) in the retracted position (P2), and the recess (185) is formed. 185) is a battery storage device for an electric vehicle in which cross members (116, 122) extending in the vehicle width direction of the battery support frame (110) are arranged.   The electric vehicle according to claim 1, wherein the case-side connection terminal (43) and the cross member (116, 122) in the retracted position (P2) are arranged so as to overlap each other when viewed in the vehicle longitudinal direction. Battery storage device.   The said cross member (116,122) is equipped with the cable support part (131) which supports the electric cable (60) which reaches the electric motor (30) for vehicle traveling, The electric vehicle of Claim 1 or 2 characterized by the above-mentioned. Battery storage device. A link mechanism (44) operable to shift the case side connection terminal (43) upward;
The support portion (162) of the link mechanism (44) is supported by the battery support frame (110) on the vehicle width direction outer side of the battery case (42). Battery storage device for electric vehicle. A protective member (189) surrounding the case side connection terminal (43) in the retracted position (P2),
The battery storage device for an electric vehicle according to any one of claims 1 to 4, wherein the protection member (189) is arranged so as to overlap the body frame (F) in a side view. The cross member (116, 122) includes a cable support portion (131) for supporting an electric cable (60) leading to an electric motor (30) for traveling a vehicle,
The battery storage device for an electric vehicle according to claim 5, wherein the electric cable (60) and the cable support portion (131) are arranged behind the protection member (189). The battery case (42) houses a plurality of the batteries (62A, 62B),
A plurality of the protection members (189) are provided corresponding to the plurality of batteries (62A, 62B),
The battery storage device for an electric vehicle according to claim 6, wherein the electric cable (60) and the cable support portion (131) are arranged between a plurality of the protection members (189).

Images