Electric vehicle

Abstract

The invention provides an electric vehicle, and provides a configuration structure of a battery in the electric vehicle in which the battery is arranged below a seat, wherein the configuration structure ensures an accommodating space of an accommodating part and does not easily influence the riding performance of an occupant. The electric vehicle is provided with a battery (34) and a housing part (33) below a seat (17), the electric vehicle is provided with a frame (20), the frame (20) is provided with a lower frame (22) extending from a front vertical pipe (21), a central frame (23) extending from the lower frame (22), and rear frames (24) extending from the central frame (23), and the housing part (33) is configured between a pair of left and right rear frames (24). The pair of left and right rear frames (24) has an inclined portion (50) extending rearward and upward and a horizontal portion (51) extending from the inclined portion (50), and the battery (34) is located rearward of the inclined portion (50) and below the horizontal portion (51) and extends along the inclined portion (50).

Description

Technical Field

[0001] The present invention relates to electric vehicles. Background Art

[0002] Conventionally, there is known an electric vehicle in which a battery is arranged between a pair of left and right rear frames supporting seats (for example, see Patent Document 1). In Patent Document 1, the rear frame is composed of an inclined portion extending upward and rearward from a center frame and a horizontal portion extending backward from an upper portion of the inclined portion, and the battery is arranged between the inclined portions, with at least a portion of the battery being located above the horizontal portion.

[0003] [Prior art literature]

[0004] [Patent Document]

[0005] [Patent Document 1]

[0006] Japanese Patent Application Publication No. 2013-129344 Summary of the invention

[0007] [Problems to be Solved by the Invention]

[0008] The technology described in Patent Document 1 has the following problem: since the battery is arranged to protrude above the rear frame, the storage space can only be provided behind the battery. Here, in an engine vehicle, a large storage space is arranged below the seat to accommodate a helmet, etc., but in an electric vehicle where the battery is arranged below the seat, the battery has an undeniable influence on the storage space.

[0009] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a battery arrangement structure in which a storage space of a storage portion is ensured and the riding comfort of passengers is not easily affected in an electric vehicle in which a battery is arranged below a seat.

[0010] [Methods for solving the problem]

[0011] The electric vehicle has a battery and a storage portion below a seat, and has a frame, the frame having a down frame extending downward from a front vertical pipe, a central frame extending rearward from the down frame, and a pair of left and right rear frames extending rearward and upward from the central frame, the storage portion being arranged between the pair of left and right rear frames, and the electric vehicle is characterized in that the pair of left and right rear frames have an inclined portion extending obliquely rearward and upward, and a horizontal portion extending from an upper end of the inclined portion in a horizontal direction, the battery being located rearward of the inclined portion and below the horizontal portion, and extending along the inclined portion.

[0012] [Effects of the invention]

[0013] In an electric vehicle in which a battery is arranged below a seat, a battery arrangement structure can be provided that ensures a storage space for a storage portion and does not easily affect the riding comfort of an occupant. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a left side view of the electric vehicle according to the embodiment of the present invention.

[0015] Figure 2 This is a perspective view of the front part of the electric vehicle as viewed from the rear.

[0016] Figure 3 It is a main part front view showing the area below the seat of the electric vehicle.

[0017] Figure 4 It is a left side view of the rear of the electric vehicle.

[0018] Figure 5 It is shown from Figure 4 The electric vehicle shown is a left side view with the seat lower cover, rear side cover, floor cover, etc. removed.

[0019] Figure 6 It is shown from Figure 5 The electric vehicle is shown in a left side view with the rear cover and the swing arm cover removed.

[0020] Figure 7 It is a perspective view showing the periphery of the rear frame and the battery as seen from the front.

[0021] Figure 8 It is a perspective view showing the rear frame and the periphery of the battery as seen from the rear.

[0022] Fig. 9 is along Figure 6 The figure is viewed from the direction of arrow IX.

[0023] Fig.10 This is a longitudinal cross-sectional view of the rear portion of the electric vehicle along the center of the vehicle width.

[0024] Fig.11 It is a top view showing the periphery of the luggage box.

[0025] Fig.12 It is shown from Fig.11 A top view of the luggage compartment removed.

[0026] Description of Reference Numerals

[0027] 12 Rear wheel

[0028] 16 Swing arm

[0029] 17 Seats

[0030] 20 small motorcycle frame (frame)

[0031] 21 Front riser

[0032] 22 Downstream

[0033] 23 Central Frame

[0034] 24 Rear rack

[0035] 25 horizontal frame (horizontal component)

[0036] 30 sub-frames

[0037] 33 Luggage compartment (storage area)

[0038] 33a Lower extension

[0039] 33a1 lower end

[0040] 33b Rear extension

[0041] 34 Batteries

[0042] 34a Upper

[0043] 35PCU (functional components of electric vehicles)

[0044] 46 Seat lower cover (vehicle body cover)

[0045] 50 Inclined part

[0046] 51 Horizontal

[0047] 80 Base

[0048] 83 Front extension

[0049] 88 pivot bracket part (pivot part) DETAILED DESCRIPTION

[0050] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description, unless otherwise specified, the description of directions such as front, back, left, right, and up and down is the same as the direction relative to the vehicle body. In addition, the symbol FR shown in each figure indicates the front of the vehicle body, the symbol UP indicates the top of the vehicle body, and the symbol LH indicates the left of the vehicle body.

[0052] Figure 1 It is a left side view of electric vehicle 10 according to the embodiment of the present invention.

[0053] The electric vehicle 10 is an electric motorcycle including a frame 11 , an electric motor 13 driving a rear wheel 12 as a driving wheel, a front fork 15 supporting a front wheel 14 so as to be steerable, a swing arm 16 supporting the rear wheel 12 , and a seat 17 for a passenger.

[0054] The electric vehicle 10 is a saddle-riding type vehicle in which a passenger sits astride a seat 17. The electric vehicle 10 of the present embodiment is an electric scooter having a floor portion 18 with a low floor.

[0055] The vehicle frame 11 includes a small motorcycle frame (vehicle frame) 20 and a sub-frame 30 mounted on the small motorcycle frame 20. The small motorcycle frame 20 includes: a front stand pipe 21 at the front end; a down frame 22 extending downward from the front stand pipe 21; a center frame 23 extending rearward from the down frame 22; and a pair of left and right rear frames 24 extending rearward and upward from the center frame 23. The sub-frame 30 is mounted across the pair of left and right rear frames 24 of the small motorcycle frame 20.

[0056] A pair of left and right front forks 15 are steerably mounted on the front seat tube 21. A steering handle 19 is mounted on the upper portion of the front fork 15. The front wheel 14 is mounted on the lower end of the front fork 15 via an axle 14a.

[0057] The sub-frame 30 supports a pivot shaft 31 extending in the left-right direction (the vehicle width direction).

[0058] A swing arm 16 extending in the front-rear direction is axially supported on the pivot shaft 31. The swing arm 16 extends from the pivot shaft 31 to the side of the rear wheel 12. The rear end portion of the swing arm 16 supports the rear wheel 12 via the axle 12a.

[0059] The electric motor 13 is supported by the rear wheel 12. The electric motor 13 of the present embodiment is an in-wheel motor. A rear shock absorber 32 is connected between the rear end of the swing arm 16 and the rear frame 24.

[0060] A seat 17 for a passenger to sit on is arranged above the rear frame 24. A luggage box (storage portion) 33 is arranged below the seat 17. A battery 34 is arranged below the luggage box 33.

[0061] A PCU (Power Control Unit) 35 as an electrical component is supported in front of the battery 34. The PCU 35 includes an inverter, etc., and converts the DC power supplied from the battery 34 into AC power, and supplies the converted AC power to the electric motor 13. In addition, when the electric motor 13 is regenerated, the PCU 35 converts the AC power generated by the electric motor 13 into DC power, and charges the battery 34.

[0062] Figure 2 This is a perspective view of the front portion of the electric vehicle 10 as viewed from the rear. Figure 3 It is a main part front view showing the area below the seat 17 of the electric vehicle 10 .

[0063] like Figure 1 to Figure 3 As shown, the vehicle frame 11 , the luggage box 33 , the battery 34 , etc. are covered by a vehicle body cover 40 .

[0064] The vehicle body cover 40 includes a front cover 41, a leg guard 42 at the rear of the front cover 41, a floor cover 43 below the leg guard 42, a pair of left and right floor side covers 44 provided on the left and right sides of the floor cover 43, a bottom cover 45 below the floor side cover 44, a seat lower cover 46 at the rear of the floor cover 43, a pair of left and right rear side covers 47 arranged behind the seat lower cover 46, and a rear cover 48 arranged at the rear of the rear side cover 47.

[0065] The front cover 41 covers the front end of the vehicle frame 11 such as the front seat tube 21 from the front. The leg guard 42 is connected to the rear of the front cover 41, and covers the front seat tube 21 and the down frame 22 from the rear. The floor cover 43 is connected to the lower end of the leg guard 42, and covers the center frame 23 from the top. The floor cover 43 constitutes the floor portion 18. The floor side covers 44 are arranged on the left and right of the floor cover 43, and cover the center frame 23 from the left and right sides. The bottom cover 45 is connected to the lower ends of the left and right floor side covers 44, and covers the center frame 23 from the bottom.

[0066] The seat lower cover 46 is arranged below the front part of the seat 17 and connected to the rear end of the floor cover 43. The rear side cover 47 extends rearward from the side of the seat lower cover 46 and covers the rear frame 24 from the left and right outer sides. Thus, the rear side cover 47 covers the luggage box 33 from the left and right outer sides. The rear cover 48 is arranged between the left and right rear side covers 47 and covers the battery 34 from the rear.

[0067] Here, a pocket 42a (see FIG. 4A ) capable of storing articles is provided on the left side of the leg guard 42. Figure 2 ). A terminal port 36 is provided above the pocket 42a. The terminal port 36 is closed by a cover 36a so as to be openable and closable. The terminal port 36 is, for example, a USB (Universal Serial Bus) port. The power supplied from the terminal port 36 can be used to charge a terminal or the like.

[0068] In addition, a power supply port 37 for supplying power to the battery 34 is provided in the left portion of the seat lower cover 46. The power supply port 37 is closed by a power supply cover 37a so as to be openable and closable.

[0069] like Figure 1 As shown in FIG. 1 , a front fender 38 that covers the front wheel from above is mounted on the front fork 15. In addition, a rear fender 39 that covers the rear wheel from above is mounted on the rear frame 24.

[0070] A main stand 28 is supported by the swing arm 16. A side stand 29 is supported by a lower end portion of the left rear frame 24.

[0071] Figure 4 It is a left side view of the rear portion of the electric vehicle 10 . Figure 5 It is shown from Figure 4The electric vehicle 10 shown is a left side view in a state where the seat lower cover 46 , the rear side cover 47 , the floor cover 43 , etc. are removed. Figure 6 It is shown from Figure 5 The electric vehicle 10 shown is a left side view in a state where the rear cover 48 and the swing arm cover 16 b are removed.

[0072] The pair of left and right rear frames 24 each have an inclined portion 50 extending obliquely toward the rear and upward, and a horizontal portion 51 extending in the horizontal direction from the upper end of the inclined portion 50. Here, the battery 34 is located at a position behind the inclined portion 50 and below the horizontal portion 51, and extends along the inclined portion 50. Therefore, when the vehicle is viewed from the side, the driving battery 34 is not arranged on the front side and the upper side of the rear frame 24. Therefore, in the electric vehicle 10 of the present embodiment, a space for arranging parts and components other than the battery 34 can be ensured on the front side and the upper side of the rear frame 24. In other words, in the electric vehicle 10 of the present embodiment, the battery 34 is not arranged on the front side and the upper side of the rear frame 24, so it can also be compact. The arrangement of the battery 34 of the present embodiment can suppress the influence on the passenger seating space such as the floor portion 18 in front of the seat 17.

[0073] Figure 7 It is a perspective view showing the periphery of the rear frame 24 and the battery 34 as seen from the front. Figure 8 It is a perspective view showing the periphery of the rear frame 24 and the battery 34 as seen from the rear. Fig. 9 is from Figure 6 The figure is viewed from the direction of arrow IX.

[0074] use Figure 6 to Figure 9 The vehicle frame 11 around the battery 34 of the present embodiment will be described in detail.

[0075] In this embodiment, the center frame 23 (see Figure 7 ) is a frame extending to the rear. A transverse frame (transverse member) 25 extending in the vehicle width direction is connected to the rear end of the central frame 23. Rear frames 24 are connected to both outer ends of the transverse frame 25 in the vehicle width direction.

[0076] A pair of left and right small motorcycle frames 26 (see FIG. 2 ) extending in the front-rear direction above the center frame 23 are arranged on the left and right sides of the center frame 23. Figure 1 , Figure 7 The left and right small motorcycle frames 26 extend in the front-rear direction. The rear end of the small motorcycle frame 26 is connected to the lower end of the rear frame 24 and the upper surface of the transverse frame 25 (see Figure 7 ).

[0077] The rear frame 24 includes an inclined portion 50, a horizontal portion 51, and a rear end transverse frame 52 connected to the rear end of the horizontal portion 51 in the vehicle width direction (see Figure 8 , Fig. 9The lower end of the inclined portion 50 is connected to the outer end of the transverse frame 25 in the vehicle width direction. The inclined portion 50 is extended from the transverse frame 25 in the vehicle width direction (refer to Fig. 9 ), and extends rearward. The horizontal portion 51 extends rearward, and at the rear end portion, it bends inward in the vehicle width direction as it moves rearward (see Figure 7 , Fig. 9 A rear end cross frame 52 is supported at the rear end of the horizontal portion 51 .

[0078] like Figure 7 As shown in FIG. 1 , an arched front stay portion 53 is supported on the front surface of the inclined portion 50 of the rear frame 24. The front stay portion 53 is supported across the left and right rear frames 24. The front stay portion 53 is inclined forward as the vehicle moves upward when viewed from the side (see FIG. 1 ). Figure 6 A pair of left and right front luggage supports 54 are formed in the center of the front support 53 in the vehicle width direction. A fastening boss portion 54a protruding upward is formed on the upper surface of the front luggage support 54. The fastening boss portion 54a is cylindrical. A threaded groove is formed on the inner peripheral surface of the fastening boss portion 54a. A frame plate-shaped electrical support portion 55 is supported on the front luggage support 54. The electrical support portion 55 extends in the up-down direction (refer to Figure 6 ).

[0079] An inner protruding frame 56 protruding inward in the vehicle width direction is supported at the front end of the horizontal portion 51 of the rear frame 24. The inner protruding frame 56 is cylindrical. A rear luggage support 57 extending upward is formed on the upper surface of the inner protruding frame 56. A fastening boss portion 57a ​​protruding upward is formed at the upper end of the rear luggage support 57. The fastening boss portion 57a ​​is cylindrical. A threaded groove is formed on the inner circumferential surface of the fastening boss portion 57a.

[0080] A buffer support portion 58 extending downward and rearward is formed on the rear lower surface of the inner protruding frame 56. The buffer support portion 58 is a substantially U-shaped bent plate. Fig. 9 As shown, the buffer support portion 58 has an upper bottom portion 58a and a pair of left and right side portions 58b and 58c extending downward from both ends of the upper bottom portion 58a. The side portions 58b and 58c are spaced apart from each other and face each other. The upper end portion of the rear buffer 32 enters and is connected to the buffer support portion 58 (see Figure 6 ).

[0081] like Figure 7 As shown, a plurality of handrail support posts 59 are formed behind the inner protruding frame 56. A handrail 71 (see FIG. Figure 5 A lamp bracket portion 60 is formed on the rear end transverse frame 52. A rear lamp unit 72 (see FIG. 1 ) is fixed to the lamp bracket portion 60. Figure 5A locking bracket portion 61 is formed in front of the lamp bracket portion 60. A seat lock 73 is fixed to the locking bracket portion 61 (see Fig.10 ).

[0082] A footrest support portion 62 is provided on the rear surface of the inclined portion 50 of the rear frame 24. The footrest support portion 62 includes a tubular first frame 62a extending rearward and downward from the rear portion of the rear frame 24 and a tubular second frame 62b extending forward from the front surface of the first frame 62a and connected to the rear surface of the rear frame 24. A bent plate-shaped bracket portion 62c is fixed to the front end portion of the first frame 62a. The cross section of the bracket portion 62c is substantially U-shaped. A footrest 74 is rotatably supported on the bracket portion 62c (see Figure 5 ).

[0083] A second step support portion 63 is formed at the horizontal portion 51 of the left rear frame 24. Figure 5 As shown in FIG. 1 , a support frame 75 is connected to the second step bracket portion 63. The support frame 75 extends downward. A pedal 76 is supported at the lower end of the support frame 75 so as to be rotatable around an axis extending in the front-rear direction as a rotation center.

[0084] like Figure 6 , Figure 8 , Fig. 9 As shown, the sub-frame 30 is integrally provided at the inclined portion 50 of the rear frame 24. The sub-frame 30 has a pair of left and right base portions 80. The base portion 80 is tubular in this embodiment. The base portion 80 has a sub-horizontal portion 81 extending in the front-rear direction and a sub-inclined portion 82 extending from the rear end of the sub-horizontal portion 81 to the rear and upward direction. The sub-horizontal portion 81 is connected to the transverse frame 25 at the front end. In detail, the sub-horizontal portion 81 is connected to the transverse frame 25 at a position between the center frame 23 and the rear frame 24 in the vehicle width direction. The sub-inclined portion 82 extends along the inclined portion 50 of the rear frame 24.

[0085] A front extension portion 83 is formed in the middle of the length direction of the auxiliary inclined portion 82, which extends forward in a manner orthogonal to the auxiliary inclined portion 82 in a side view. The front extension portion 83 is substantially L-shaped (in a top view). That is, the front extension portion 83 extends outward in the vehicle width direction and then extends straightly forward and upward. The front extension portion 83 is connected to the rear surface of the inclined portion 50 of the rear frame 24. A cover fixing portion 83a (see FIG. 1 ) is formed in the front extension portion 83. Figure 6 , Figure 8 ).

[0086] A central connecting portion 84 is formed below the front extension portion 83 to connect the left and right base portions 80. The central connecting portion 84 is a pipe extending in a straight line. The central connecting portion 84 and the front extension portion 83 are connected to the base portion 80 in an alternating manner. That is, the front extension portion 83 does not exist in the extension direction of the central connecting portion 84, and the central connecting portion 84 and the front extension portion 83 are not on a straight line.

[0087] like Fig. 9 As shown, the sub-horizontal portion 81 is formed with a lower battery fixing portion 85. A pair of lower battery fixing portions 85 are formed on the left and right sides of the vehicle width center. The lower battery fixing portion 85 has a fixing surface 85a (see FIG. 1 ) that is inclined along the sub-inclined portion 82. Fig.10 ). The fixing surface 85a faces forward and upward.

[0088] A frame support portion 82a is formed at the upper end of the base portion 80, that is, the upper end of the auxiliary inclined portion 82. The frame support portion 82a supports a battery support frame 86. The battery support frame 86 is a pipe bent into a substantially U-shape. The battery support frame 86 has an asymmetric structure (see FIG. 1 ). Fig. 9 ). In detail, the battery support frame 86 has a pair of left and right extensions 86a, 86e fixed to the frame support portion 82a. At the upper end of each extension portion 86a, 86e, an inclined portion 86b, 86d is formed, which extends rearward and upward at a steeper inclination than the extension portion 86a, 86e. The inclined portions 86b, 86d are inclined inward in the vehicle width direction as they move backward and upward. At the upper end of the inclined portions 86b, 86d, left and right connecting portions 86c extending in the vehicle width direction are formed.

[0089] Here, of the left inclined portion 86b and the right inclined portion 86d, the left inclined portion 86b is more inclined toward the inside of the vehicle width direction relative to each extension portion 86a, 86e than the right inclined portion 86d. Therefore, the left and right connecting portions 86c are biased to the right relative to the center of the vehicle width. The upper battery fixing portion 87 is formed in the left and right connecting portions 86c. The upper battery fixing portion 87 is biased to the right relative to the center of the vehicle width. The upper battery fixing portion 87 has a fixing surface 87a (see FIG. 1 ) along the inclination of the auxiliary inclined portion 82. Fig.10 ). The fixing surface 87a faces forward and upward.

[0090] A plate-shaped pivot bracket portion (pivot portion) 88 is provided at the connection portion between the auxiliary horizontal portion 81 and the auxiliary inclined portion 82 (see Figure 8 ). A shaft member 89 extending in the vehicle width direction is fixed to the pivot bracket portion 88. A pivot hole 88a is formed in the upper rear portion of the shaft member 89. The pivot hole 88a penetrates the pivot bracket portion 88 in the vehicle width direction.

[0091] Fig.10It is a longitudinal cross-sectional view of the rear portion of the electric vehicle 10 along the center of the vehicle width.

[0092] The sub-frame 30 supports a battery 34. The battery 34 has a rectangular parallelepiped shape. The battery 34 extends from the lower front to the upper rear. The battery 34 has a thickness in the direction from the upper front to the lower rear. The battery 34 is arranged below the rear frame 24 between the inclined portion 50 of the rear frame 24 and the auxiliary inclined portion 82 of the sub-frame 30. The battery 34 is supported in a state along the inclined portion 50 of the rear frame 24 and the auxiliary inclined portion 82 of the sub-frame 30.

[0093] Specifically, the battery 34 is supported by the sub-frame 30 via the battery case 90 .

[0094] like Figure 7 , Figure 8 As shown in FIG. 1 , the battery case 90 is a box-shaped body with its front upper portion open. The battery case 90 has a bottom portion 91 extending along the inclined portion 50 and side portions 92 formed on the left and right sides of the bottom portion 91. A pair of left and right lower fixing portions 93 (see FIG. 1 ) are formed at the lower end of the bottom portion 91 of the battery case 90. Fig. 9 The lower fixing portion 93 is recessed upward. The lower battery fixing portion 85 of the sub-frame 30 is accommodated in the lower fixing portion 93 from below. A fixing hole (not shown) penetrating in a direction perpendicular to the inclined portion 50 is formed in the lower fixing portion 93.

[0095] In addition, a support frame receiving portion 91a that is recessed in a groove shape toward the front and upward is formed at the upper portion of the bottom surface portion 91. The battery support frame 86 of the sub-frame 30 is received in the support frame receiving portion 91a. An upper fixing portion 94 is formed in the support frame receiving portion 91a corresponding to the position of the upper battery fixing portion 87. A fixing hole (not shown) that passes through in the thickness direction is formed in the upper fixing portion 94.

[0096] The battery case 90 receives the lower battery fixing portion 85 of the sub-frame 30 in the lower fixing portion 93, and receives the left and right connecting portions 86c of the battery support frame 86 in the support frame receiving portion 91a. Thus, the battery case 90 is temporarily arranged on the sub-frame 30. In this state, the battery 34 is arranged on the upper surface of the battery case 90. And the battery 34 is held by the battery bracket 100 (see Figure 7 , Fig.10 ) is covered and secured from above.

[0097] like Fig.10 As shown, the battery holder 100 includes a plate-shaped upper surface portion 101 extending along the upper surface of the battery 34. In this embodiment, the upper surface portion 101 is provided with a pair of left and right (see Figure 7 ).

[0098] A bent plate-shaped lower connection portion 102 is formed at the lower end of the upper surface portion 101 to connect the left and right upper surface portions 101. The front side of the lower connection portion 102 is bent downward. A fixing portion 102a is formed at the lower end of the lower connection portion 102 to be fixed to the lower battery fixing portion 85 of the sub-frame 30. When the vehicle is viewed from the side, the fixing portion 102a is formed at a position above (in front of) the half position P1 in the thickness direction of the battery 34. The fixing portion 102a is arranged on the lower fixing portion 93 of the battery case 90.

[0099] A connecting portion 103 that connects the left and right upper surface portions 101 is provided at the upper end portion of the upper surface portion 101 .

[0100] The upper connecting portion 104 in the shape of a bent plate is fixed to the left and right central portions of the connecting portion 103. The upper connecting portion 104 includes a base portion 104a extending rearward, an extension portion 104b extending rearward and downward from the base portion 104a, and a fixing portion 104c formed at the lower end of the extension portion 104b. The base portion 104a extends along the rear portion 114 of the bottom wall of the luggage box 33. When the vehicle is viewed from the side, the extension portion 104b extends to a position below (to the rear) the position P1 of the battery 34 in the thickness direction of the battery 34. When the vehicle is viewed from the side, the fixing portion 104c is formed at a position below (to the rear) the position P1 of the battery 34 in the thickness direction of the battery 34. Therefore, when the vehicle is viewed from the side, the fixing portion 104c is formed on the opposite side of the fixing portion 102a across the center position 34c of the battery 34. When the vehicle is viewed from the side, the fixing portion 104c and the fixing portion 102a are formed in a substantially point-symmetrical shape with respect to the center position 34c. The fixing portion 104 c is disposed on the upper fixing portion 94 of the battery case 90 .

[0101] The fixing parts 102a and 104c of the battery holder 100 are fixed to the lower battery fixing part 85 and the upper battery fixing part 87 of the sub-frame 30 by fixing parts 108. Thus, the battery case 90 is fastened to the lower battery fixing part 85 and the upper battery fixing part 87 of the sub-frame 30. The fixing parts 108 are, for example, bolts.

[0102] Here, a support pin 105 penetrating in the thickness direction is provided on the upper surface portion 101. A rubber 106 (see Fig.10 The rubber 106 is disposed on the lower surface of the upper surface portion 101. The battery holder 100 faces the battery 34 via the rubber 106. The battery 34 is fixed to the sub-frame 30 in a state of being sandwiched between the battery case 90 and the battery holder 100.

[0103] Fig.11 It is a plan view showing the periphery of the luggage box 33 . Fig.12 It is shown from Fig.11 This is a plan view showing a state where the luggage box 33 is removed.

[0104] A luggage box 33 is disposed above the battery 34. The luggage box 33 is a container that is recessed downward. The luggage box 33 is elliptical in shape and extends in the front-rear direction when viewed from above. The luggage box 33 is supported by the rear rack 24. The luggage box 33 of this embodiment is fixed to the front luggage bracket 54 of the rear rack 24 by a fastening member (see FIG. Fig.12 ) and rear luggage rack 57 (refer to Fig.12 The luggage box 33 is supported by the pair of left and right rear frames 24 in a state of straddling the pair of left and right rear frames 24 .

[0105] exist Figure 10 to Figure 12 In the embodiment, the luggage box 33 includes a bottom wall portion 110 and a peripheral wall portion 120 extending upward from an outer peripheral portion of the bottom wall portion 110 .

[0106] The bottom wall portion 110 has, at the center of the vehicle width, a bottom wall front end portion 111 extending rearward and downward from the surrounding wall portion 120 on the front end side; a bottom wall bottom portion 112 extending rearward and downward from the lower end of the bottom wall front end portion 111 at a gentler inclination than the bottom wall front end portion 111; a bottom wall middle portion 113 extending rearward and upward from the lower end of the bottom wall bottom portion 112; and a bottom wall rear portion 114 extending rearward from the upper end of the bottom wall middle portion 113. The surrounding wall front portion 121, which is the front side portion of the surrounding wall portion 120, extends upward from the periphery of the bottom wall front end portion 111, the bottom wall bottom portion 112, and the bottom wall middle portion 113. The surrounding wall rear portion 122, which is the rear side portion of the surrounding wall portion 120, extends upward from the periphery of the bottom wall rear portion 114.

[0107] The bottom wall front end portion 111, the bottom wall bottom portion 112, the bottom wall middle portion 113 and the surrounding wall front portion 121 constitute the front portion of the luggage box 33 of this embodiment, namely the lower extension portion 33a. The bottom wall rear portion 114 and the surrounding wall rear portion 122 constitute the rear portion of the luggage box 33 of this embodiment, namely the rear extension portion 33b.

[0108] The lower extension portion 33a is located below the horizontal portion 51 of the rear frame 24, and the range occupied in the vertical direction overlaps with the battery 34. The lower end 33a1 of the lower extension portion 33a, in other words, the connection portion between the bottom wall bottom 112 and the bottom wall middle portion 113 is located below the upper end 34a of the battery 34. In particular, in the present embodiment, the lower end 33a1 of the lower extension portion 33a is located below the center position 34c that is halfway between the upper end 34a and the lower end 34b of the battery 34. The lower extension portion 33a is deep to the extent that it is located below the center position 34c. The lower extension portion 33a can be used to store a full-face helmet 140 in the luggage box 33. In detail, the helmet 140 can be stored in the luggage box 33 with the opening for inserting the head tilted.

[0109] A portion of the lower extension portion 33a is located between the inclined portions 50 of the left and right rear frames 24. The bottom wall middle portion 113 of the lower extension portion 33a extends along the inclined portion 50 of the rear frame 24. In the present embodiment, the bottom wall middle portion 113 protrudes slightly downward (rearward) from the inclined portion 50 of the rear frame 24 when the vehicle is viewed from the side (see FIG. 1 ). Figure 5 ).

[0110] The bottom wall front end portion 111 of the lower extension portion 33a extends upward along the front stay portion 53 of the rear frame 24. A hinge portion 115 protruding forward is provided at the front end of the peripheral wall front portion 121 of the lower extension portion 33a. The hinge portion 115 overlaps with the PCU 35 supported by the front stay portion 53 in a plan view (see FIG. 1 ). Fig.10 , Fig.11 The seat 17 is rotatably supported by the hinge portion 115. Therefore, in the present embodiment, the seat 17 is supported by the rear frame 24 via the luggage box 33.

[0111] An opening 112a is formed in the bottom wall bottom 112 of the lower extension portion 33a, which passes through in the vertical direction. The opening 112a is closed by a cover (not shown) so as to be openable and closable. The lower part of the front stay portion 53 can be accessed through the opening 112a. In this embodiment, a fuse box 135 as an example of an electrical component can be accessed through the opening 112a.

[0112] When the vehicle is viewed from the side, the rear extension 33b of the luggage box 33 overlaps with the horizontal portion 51 of the rear frame 24 (see FIG. Figure 5 The bottom wall rear portion 114 of the rear extension portion 33b is located below the rear frame 24. The rear portion 122 of the peripheral wall of the rear extension portion 33b is formed with buffer member avoidance portions 122a and 122b that bulge inward in the vehicle width direction (see Fig.11 ). The luggage box 33 avoids the rear cushion member 32 and is disposed between the rear frames 24 by the cushion member avoidance portions 122a and 122b. The charger 141 for charging can be accommodated in the luggage box 33 by the rear extension portion 33b.

[0113] like Fig.12 As shown, a connector 130 is connected to the upper left side of the battery 34. A cable 131 extends from the connector 130. The cable 131 is connected to an electrical component 132 fixed to the upper part of the battery case 90. A cable 133 extends from the electrical component 132 to the rear frame 24 on the right side. The cable 133 is intertwined with other cables and extends forward along the rear frame 24 on the right side. The cable 134 extending along the rear frame 24 on the right side is connected to the PCU 35 fixed to the electrical bracket 55 (see FIG. 1 ). Fig.10) is connected. The PCU 35 is substantially plate-shaped. The PCU 35 is supported in a state along the up-down direction. Cables extend from the PCU 35 to the electric motor 13 and the like. A fuse box 135 is arranged below the front stay portion 53.

[0114] like Figure 6 As shown, the pivot 31 passes through the pivot hole 88a of the pivot bracket portion 88 of the sub-frame 30. The swing arm 16 is supported on the pivot 31 in a swingable manner. The swing arm 16 of this embodiment has: a pair of left and right swing arm bodies 16a are provided in a plate shape extending in the front-rear direction; and a pair of left and right swing arm covers 16b covering each swing arm body 16a from the outside in the vehicle width direction. The rear wheel 12 is supported in a state of being clamped by the pair of left and right swing arm bodies 16a. The lower end of the rear buffer 32 is connected to the rear part of the swing arm body 16a. The upper end of the rear buffer 32 is connected to the buffer bracket portion 58 of the rear frame 24. The rear buffer 32 is arranged at a position closer to the inside in the vehicle width direction than the rear frame 24.

[0115] like Figure 5 As shown in FIG. 1 , a rear cover 48 is disposed behind the battery case 90. The rear cover 48 is fixed to the cover fixing portion 83a of the front extension portion 83 of the sub-frame 30, etc. The rear cover 48 covers the battery case 90 from the rear. Figure 4 As shown in FIG. 1 , a rear side cover 47 is disposed on the outer side of the rear cover 48 in the vehicle width direction. The rear side cover 47 covers the rear frame 24 and the luggage box 33 (see FIG. 1 ) from the outer side in the vehicle width direction. Figure 4 ). A seat lower cover 46 is disposed on the front side of the luggage box 33. Fig.10 As shown, between the seat lower cover 46 and the luggage box 33, the PCU 35 and the power supply port 37 (see Figure 3 ) etc. The power supply port 37 is supported by the seat lower cover 46. The power supply port 37 is provided on the left side relative to the vehicle width center. A cable (not shown) extending from the charger 141 is connected to the power supply port 37. The charger 141 is connected to a power source via a cable (not shown). Thus, the battery 34 is charged.

[0116] As described above, according to the present embodiment to which the present invention is applied, the electric vehicle 10 has a battery 34 and a luggage box 33 below the seat 17, and has a small motorcycle frame 20, the small motorcycle frame 20 having a down frame 22 extending downward from the front vertical pipe 21, a center frame 23 extending rearward from the down frame 22, and a pair of left and right rear frames 24 extending rearward and upward from the center frame 23, and the luggage box 33 is arranged between the pair of left and right rear frames 24, wherein the pair of left and right rear frames 24 have an inclined portion 50 extending obliquely rearward and upward and a horizontal portion 51 extending from the upper end of the inclined portion 50 in the horizontal direction, and the battery 34 is located at a position rearward of the inclined portion 50 and below the horizontal portion 51, and extends along the inclined portion 50.

[0117] According to this structure, by locating the battery 34 at a position behind the inclined portion 50 and below the horizontal portion 51, a space where the battery 34 is not arranged can be provided at a position ahead of the inclined portion 50 of the rear frame 24 and above the horizontal portion 51. Therefore, in the electric vehicle 10 in which the battery 34 is arranged below the seat 17, a configuration structure of the battery 34 can be provided that ensures the storage space of the luggage box 33 and is not likely to affect the riding comfort of the occupants (the space around the floor portion 18 in front of the seat 17). In addition, for example, if the battery is arranged on the floor instead of below the seat 17, a large luggage box can be arranged without affecting the seat 17, but the riding comfort may be affected (the height and width of the floor). If the battery is arranged while keeping the shape of the floor unchanged, a large-capacity battery cannot be accommodated, which will affect the cruising distance. In this embodiment, a large-capacity battery 34 required for the travel of the electric vehicle 10 is arranged, and the influence on the storage space and the riding space is considered.

[0118] In the present embodiment, the luggage box 33 is provided between the pair of left and right inclined portions 50 .

[0119] According to this structure, the space between the inclined parts 50 can also be used as a placement space for the luggage box 33, and the storage space of the luggage box 33 can be easily increased.

[0120] In addition, in the present embodiment, the luggage box 33 has a downward extending portion 33 a extending downward along the inclined portion 50 in front of the battery 34 .

[0121] According to this structure, the luggage box 33 can be disposed between the inclined portions 50 in front of the battery 34 while the luggage box 33 is brought close to the front of the battery 34 , and the storage space for the luggage box 33 can be easily ensured.

[0122] In the present embodiment, the lower end 33 a 1 of the downward extending portion 33 a is located below the upper end 34 a of the battery 34 .

[0123] According to this structure, the storage space of the luggage box 33 can be increased.

[0124] Furthermore, in the present embodiment, the luggage box 33 has a rearward extending portion 33 b extending toward the rear of the vehicle body between the pair of left and right horizontal portions 51 .

[0125] According to this structure, the space between the horizontal portions 51 above the batteries 34 can also be used as the luggage compartment 33 .

[0126] In the present embodiment, a seat under cover 46 is provided below the seat 17 to cover the front of the luggage box 33 , and a PCU 35 as an example of a functional component of the electric vehicle is arranged between the seat under cover 46 and the luggage box 33 .

[0127] According to this configuration, the space between the seat lower cover 46 and the luggage box 33 can be effectively utilized as a space for arranging functional components of the electric vehicle.

[0128] In addition, in the present embodiment, the battery 34 is supported by at least the sub-frame 30 provided on the inclined portion 50 .

[0129] According to this structure, the battery 34 arranged behind the rear frame 24 can be rigidly supported.

[0130] In the present embodiment, the sub-frame 30 includes a pair of left and right base portions 80 extending vertically behind the battery 34 along the inclination of the battery 34 , and the base portions 80 are connected to the small motorcycle frame 20 .

[0131] According to this configuration, the sub-frame 30 can be made into a compact structure, and the battery 34 can be supported with strength by the sub-frame 30 .

[0132] In addition, in the present embodiment, the small motorcycle frame 20 includes a transverse frame 25 connecting the lower ends of the left and right pair of rear frames 24, and the sub-frame 30 includes a pair of left and right front extension portions 83 extending forward from the midway portion in the longitudinal direction of each of the left and right pair of base portions 80 through the side of the battery 34, the lower ends of the left and right pair of base portions 80 are connected to the transverse frame 25, and the front ends of the left and right pair of front extension portions 83 are connected to the inclined portion 50.

[0133] According to this structure, the sub-frame 30 can support the battery 34 by surrounding the lower side and the side of the battery 34 , so that the battery 34 can be supported with greater strength.

[0134] Furthermore, in the present embodiment, the sub-frame 30 is provided with a pivot bracket portion 88 that supports the swing arm 16 of the rear wheel 12 .

[0135] According to this configuration, by supporting the swing arm 16 using the sub-frame 30 that supports the battery 34 , the sub-frame 30 and the swing arm 16 can be arranged compactly.

[0136] [Other embodiments]

[0137] The above-described embodiment merely shows one mode of the present invention, and any modification and application are possible without departing from the gist of the present invention.

[0138] In the above embodiment, the following structure is illustrated: the vehicle frame 11 has a central frame 23 extending in the front-rear direction, and the pair of left and right rear frames 24 are connected to the central frame 23 via the transverse frame 25, so that the pair of left and right rear frames 24 extend rearward and upward from the central frame 23. However, the structure in which the pair of left and right rear frames 24 extend rearward and upward from the central frame 23 is not limited to this. For example, a structure in which a pair of left and right central frames extend from the lower end of the down frame and a pair of left and right rear frames extend rearward and upward from the rear end of each central frame may be used.

[0139] In the above embodiment, PCU 35 is exemplified as a functional component of the electric vehicle supported by the front stay portion 53, but a functional component unique to the electric vehicle 10 that is not required in a vehicle with an internal combustion engine, such as an on-board charger for charging a battery, may be supported instead of PCU 35. In addition, PCU 35 is exemplified as a functional component of the electric vehicle, but a control member for controlling the electric motor 13, such as a PDU or an ECU, may be supported instead of PCU 35.

[0140] In the above embodiment, as the electric vehicle 10, a motor two-wheeled vehicle having a front wheel 14 and a rear wheel 12 is described as an example, but the present invention is not limited to this. The present invention can be applied to a three-wheeled saddle-type vehicle having two front wheels or rear wheels, and a saddle-type vehicle having four or more wheels.

[0141] [Structure supported by the above-mentioned embodiment]

[0142] The above-mentioned embodiment supports the following structure.

[0143] (Structure 1) An electric vehicle having a battery and a storage portion below a seat, the electric vehicle having a frame, the frame having a down frame extending downward from a front vertical pipe, a center frame extending rearward from the down frame, and a pair of left and right rear frames extending rearward and upward from the center frame, the storage portion being arranged between the pair of left and right rear frames, the electric vehicle being characterized in that the pair of left and right rear frames have an inclined portion extending obliquely rearward and upward, and a horizontal portion extending horizontally from an upper end of the inclined portion, the battery being located rearward of the inclined portion and below the horizontal portion, and extending along the inclined portion.

[0144] According to this structure, by locating the battery at a position behind the inclined portion and below the horizontal portion, a space where no battery is arranged can be provided at a position ahead of the inclined portion of the rear frame and above the horizontal portion. Therefore, in an electric vehicle in which the battery is arranged below the seat, a battery arrangement structure can be provided that ensures storage space in the storage portion and is unlikely to affect the riding comfort of the occupant.

[0145] (Structure 2) According to the electric vehicle of Structure 1, the housing portion is provided between a pair of left and right inclined portions.

[0146] According to this configuration, the space between the inclined portions can also be used as a placement space for the storage portion, and the storage space of the storage portion can be easily increased.

[0147] (Structure 3) The electric vehicle according to Structure 1 or 2 is characterized in that the housing portion has a downward extending portion extending downward along the inclined portion in front of the battery.

[0148] According to this configuration, the housing section can be located close to the front of the battery and provided between the inclined sections in front of the battery, thereby making it easy to ensure a storage space for the housing section.

[0149] (Structure 4) The electric vehicle according to Structure 3 is characterized in that the lower end of the downward extending portion is located below the upper end of the battery.

[0150] According to this structure, the storage space of the storage part can be enlarged.

[0151] (Configuration 5) The electric vehicle according to any one of Configurations 1 to 4 is characterized in that the housing portion has a rearward extending portion extending toward the rear of the vehicle body between the pair of left and right horizontal portions.

[0152] According to this structure, the space between the horizontal parts above the battery can also be used as the storage part.

[0153] (Structure 6) The electric vehicle according to any one of Structures 1 to 5 is characterized in that a body cover covering the front of the storage portion is provided below the seat, and functional components of the electric vehicle are arranged between the body cover and the storage portion.

[0154] According to this configuration, the space between the vehicle body cover and the storage portion can be effectively utilized as a space for arranging functional components of the electric vehicle.

[0155] (Structure 7) The electric vehicle according to any one of Structures 1 to 6, characterized in that the battery is supported by at least a sub-frame provided on the inclined portion.

[0156] According to this structure, the battery arranged behind the rear frame can be rigidly supported.

[0157] (Structure 8) According to the electric vehicle of Structure 7, the sub-frame includes a pair of left and right base portions extending vertically behind the battery along the inclination of the battery, and the base portions are connected to the vehicle frame.

[0158] According to this configuration, the sub-frame can be made compact and the battery can be supported with strength by the sub-frame.

[0159] (Structure 9) An electric vehicle according to Structure 8, characterized in that the vehicle frame includes a transverse member connecting the lower ends of the pair of left and right rear frames, the sub-frame includes a pair of left and right front extension portions extending forward from the midway portion in the length direction of each of the pair of left and right base portions through the side of the battery, the lower ends of the pair of left and right base portions are connected to the transverse member, and the front ends of the pair of left and right front extension portions are connected to the inclined portion.

[0160] According to this structure, the sub-frame can support the battery by surrounding the lower side and the side of the battery, so that the battery can be supported with greater strength.

[0161] (Structure 10) The electric vehicle according to any one of Structures 7 to 9 is characterized in that a pivot portion of a swing arm supporting a rear wheel is provided on the sub-frame.

[0162] According to this configuration, by supporting the swing arm using the sub-frame that supports the battery, the sub-frame and the swing arm can be arranged compactly.

Claims

1. An electric vehicle, comprising a battery (34) and a storage portion (33) below a seat (17), and a vehicle frame (20), wherein the vehicle frame (20) comprises a down frame (22) extending downward from a front vertical pipe (21), a center frame (23) extending rearward from the down frame (22), and a pair of left and right rear frames (24) extending rearward and upward from the center frame (23), wherein the storage portion (33) is arranged between the pair of left and right rear frames (24), and wherein the electric vehicle is characterized in that: The pair of left and right rear frames (24) have an inclined portion (50) extending obliquely toward the rear and upward, and a horizontal portion (51) extending in the horizontal direction from the upper end of the inclined portion (50). The battery (34) is located behind the inclined portion (50) and below the horizontal portion (51), and extends along the inclined portion (50).

2. The electric vehicle according to claim 1, characterized in that: The receiving portion (33) is disposed between a pair of left and right inclined portions (50).

3. The electric vehicle according to claim 1 or 2, characterized in that: The housing portion (33) has a downward extending portion (33a) extending downward along the inclined portion (50) in front of the battery (34).

4. The electric vehicle according to claim 3, characterized in that: The lower end (33a1) of the lower extension portion (33a) is located below the upper end (34a) of the battery (34).

5. The electric vehicle according to claim 1 or 2, characterized in that: The receiving portion (33) has a rear extension portion (33b) extending toward the rear of the vehicle body between the pair of left and right horizontal portions (51).

6. The electric vehicle according to claim 1 or 2, characterized in that: A vehicle body cover (46) is provided below the seat (17) and covers the front of the storage portion (33). A functional component (35) of the electric vehicle is arranged between the vehicle body cover (46) and the housing portion (33).

7. The electric vehicle according to claim 1 or 2, characterized in that: The battery (34) is supported at least by a sub-frame (30) provided on the inclined portion (50).

8. The electric vehicle according to claim 7, characterized in that: The sub-frame (30) includes a pair of left and right base parts (80) extending up and down along the inclination of the battery (34) behind the battery (34). The base portion (80) is connected to the vehicle frame (20).

9. The electric vehicle according to claim 8, characterized in that: The vehicle frame (20) includes a transverse member (25) connecting the lower ends of the pair of left and right rear frames (24). The sub-frame (30) includes a pair of left and right front extension parts (83) extending forward from the longitudinal mid-points of the pair of left and right base parts (80) through the sides of the battery (34), The lower ends of the pair of left and right base parts (80) are connected to the transverse member (25). The front ends of the pair of left and right front extension parts (83) are connected to the inclined part (50).

10. The electric vehicle according to claim 7, characterized in that: The sub-frame (30) is provided with a pivot portion (88) of a swing arm (16) for supporting the rear wheel (12).

Images