Vehicle

Abstract

To provide a vehicle body structure characterized in that the strength of a fixing part is upgraded, the number of components or a machining man-hour is diminished, and safety and productivity are upgraded.SOLUTION: An electric two-wheeled vehicle includes a head pipe that supports a steering handlebar of the electric two-wheeled vehicle, a down frame 19 extending downward from the head pipe, a power unit 8 that drives the electric two-wheeled vehicle, and a battery unit 100 that supplies drive electric power to the power unit 8. The battery unit 100 and power unit 8 are fixed to the down frame 19 via a fixing part 47. The fixing part 47 is shaped like an integral projection.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a vehicle. [Background technology]

[0002] For example, Patent Document 1 discloses a structure in which a boss with two holes is provided on a down frame to serve as an engine hanger. In general, this structure supports a bracket with the two holes, and the bracket and engine are fastened together with one bolt. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4853900 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 does not anticipate fastening (fixing) two parts to one bracket. When fixing two parts, it is desirable to provide a vehicle body structure that increases the strength of the fixing portion while reducing the number of parts and processing steps, thereby improving safety and productivity.

[0005] In order to solve the above problems, the present application has an object to provide a vehicle body structure that increases the strength of the fixing parts while reducing the number of parts and processing steps, thereby improving safety and productivity. [Means for solving the problem]

[0006] As a means for solving the above problems, the present invention has the following configuration. (1) A vehicle according to this aspect of the present invention comprises a head pipe (16) that supports a steering handle (13) of a vehicle (1), a down frame (19) extending downward from the head pipe (16), a power unit (8) that drives the vehicle (1), and a battery unit (100) that supplies driving power to the power unit (8), and the battery unit (100) and the power unit (8) are fixed to the down frame (19) via fixing parts (47), and the fixing parts (47) have an integral protrusion shape. According to this configuration, even when two components, the battery unit and the power unit, are fixed, the strength of the fixing portion can be increased because the fixing portion has an integral protrusion shape. In addition, the number of parts and the number of processing steps can be reduced compared to when the two components are fixed to separate brackets. Therefore, it is possible to provide a vehicle body structure that has improved safety and productivity by reducing the number of parts and the number of processing steps while increasing the strength of the fixing portion.

[0007] (2) In the vehicle described in (1) above, the power unit (8) includes a drive device (50) and a control device (130) having at least a portion arranged below the drive device (50), and a portion (81) of the control device (130) arranged below the drive device (50) may be fixed to the fixing portion (47). According to this configuration, by fixing the part of the control device that is located lower than the drive device to a highly rigid fixed part, vibrations of the drive device can be suppressed as much as possible and the transmission of vibrations to the control device can be prevented.

[0008] (3) In the vehicle described in (2) above, the control device (130) is provided with a terminal portion (82) for transmitting and receiving signals or power to and from the outside, and at least a portion of the terminal portion (82) may overlap the fixed portion (47) in a side view. According to this configuration, at least a portion of the terminal portion can be protected from the side by the fixing portion.

[0009] (4) In the vehicle described in (3) above, the fixing portions (47) are provided at intervals in the vehicle width direction, and the fixing portions (47) include a first fixing portion (47L) arranged on one side of the terminal portion (82) in the vehicle width direction and a second fixing portion (47R) arranged on the other side of the terminal portion (82) in the vehicle width direction, and at least a portion of the terminal portion (82) may overlap with the first fixing portion (47L) and the second fixing portion (47R) in a side view. According to this configuration, at least a portion of the terminal portion can be protected from both sides by the fixing portion.

[0010] (5) In the vehicle described in any one of (1) to (4) above, the down frame (19) may include a bent portion (19b), and the fixing portion (47) may be provided on the bent portion (19b). According to this configuration, the bent portion of the down frame has strength greater than other portions (for example, straight portions), so that the fixing portion can be provided in a portion having greater strength.

[0011] (6) In the vehicle described in any of (1) to (5) above, the fixing portion (47) includes a first support portion (47a) that supports a front lower portion of the battery unit (100) and a second support portion (47b) that supports a front lower portion of the power unit (8), and at least a portion of a first fastening member (48a) for fastening the first support portion (47a) may overlap with a second fastening member (48b) for fastening the second support portion (47b) when viewed from the front-rear direction. According to this configuration, the two components, the battery unit and the power unit, can be fastened together by effectively utilizing the limited space. Effect of the Invention

[0012] According to the present invention, it is possible to provide a vehicle body structure that increases the strength of the fixing portion while reducing the number of parts and processing steps, thereby improving safety and productivity. [Brief description of the drawings]

[0013] [Figure 1]FIG. 1 is a left side view of an electric motorcycle (saddle-type electric vehicle) according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a left side view of a main part of the electric motorcycle. [Diagram 3] FIG. 2 is a plan view (top view) of a main part of the electric motorcycle. [Figure 4] FIG. 2 is a perspective view of a battery unit of the electric motorcycle. [Diagram 5] FIG. 4 is a left side view showing the inside of the battery unit. [Figure 6] 4 is a plan view (top view) of a peripheral portion of a fixing part that fixes a battery unit and a power unit of the electric motorcycle. FIG. [Figure 7] FIG. 4 is a left side view of the peripheral portion of the fixing portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that directions such as front, rear, up, down, left and right in the following description are the same as the directions in the vehicle described below. That is, the up and down direction coincides with the vertical direction, and the left and right direction coincides with the vehicle width direction. In the vehicle width direction, a direction away from the vehicle width center is called the vehicle width outward direction, and a direction approaching the vehicle width center is called the vehicle width inward direction. In addition, in the drawings used in the following description, the arrow UP indicates the upward direction, the arrow FR indicates the forward direction, and the arrow LH indicates the leftward direction. In the drawings, the line CL indicates the vehicle width center line (vehicle width center).

[0015] FIG. 1 is a left side view of an electric two-wheeler (saddle-type electric vehicle) 1 according to an embodiment. As shown in Fig. 1, an electric motorcycle 1 according to an embodiment is an off-road saddle-ride type electric vehicle. The electric motorcycle 1 ensures a large vertical stroke amount for the wheels, ensures a large ground clearance for the body, aims to reduce the size and weight of the body, and aims to concentrate the mass of the body. The electric motorcycle 1 includes a front wheel 2, a rear wheel 3, a front wheel suspension system 4, a body frame 5, a body cover 6, a rear wheel suspension system 7, a power unit 8, and a battery unit 100.

[0016] The front wheel suspension system 4 includes a pair of left and right front forks 10 that support the front wheel 2 at their lower ends, a top bridge 11 and a bottom bridge 12 that are provided between the upper parts of the pair of front forks 10, and a stem pipe (not shown) that is provided between the top bridge 11 and the bottom bridge 12 and is inserted into a head pipe 16. The front wheel 2 is supported steerably on the head pipe 16 of the body frame 5 via the front wheel suspension system 4. A steering handle 13 is supported on the top bridge 11. In the embodiment, a telescopic type front fork 10 is illustrated as an example of the front suspension of the electric motorcycle 1, but the configuration is not limited to this. For example, the front suspension may be of another type, such as a link type using a swing arm.

[0017] FIG. 2 is a left side view of the main parts of the electric motorcycle 1, and FIG. 1 to 3, the body frame 5 includes a head pipe 16, a pair of left and right main frames 17, a pair of left and right pivot frames 18, a single down frame 19, a pair of left and right lower frames 20, gusset pipes 21 connecting the left and right main frames 17 and the down frames 19, a cross member 22, and a lower cross member 23, which are joined together by welding or the like. Hereinafter, the assembly into which these frame members are integrated inseparably is referred to as the "frame main body."

[0018] The head pipe 16 is located at the vehicle width center CL, and is provided singly at the front end of the body frame 5. The head pipe 16 supports the stem pipe so as to be rotatable therethrough. The pair of main frames 17 branch off to the left and right from an upper portion of the head pipe 16 and extend rearward and downward. The pair of main frames 17 are joined to each other at their front ends. In a plan view seen from above, the front portions of the pair of main frames 17 extend while curving so as to bulge outward in the vehicle width direction behind the head pipe 16. In a plan view seen from above, the rear portions of the pair of main frames 17 extend linearly along the front-rear direction.

[0019] The pair of pivot frames 18 each extend rearward and downward from the rear end of the left and right main frames 17 on the same side. The pair of pivot frames 18 extend in a curved manner so as to form a convex arc shape rearward in a side view. A pivot shaft 33 extending in the vehicle width direction is installed between intermediate portions of the pair of pivot frames 18 that are closer to the lower portion in the up-down direction. Note that the term "middle" used in the embodiment includes not only the center between both ends of an object, but also the inner range between both ends of an object.

[0020] The down frame 19 extends rearward and downward from a lower portion of the head pipe 16. In a side view, the down frame 19 extends rearward and downward at a steeper incline than the main frame 17. A radiator 91 for cooling the power unit 8 is attached to at least one of the right and left side portions of the down frame 19 (the left side portion in this embodiment). The pair of lower frames 20 branch off to the left and right and extend rearward from a lower end of the down frame 19. The rear ends of the pair of lower frames 20 are each connected to the lower ends of the pivot frames 18 on the same left and right sides.

[0021] The left and right side portions of the gusset pipe 21 connect the left and right main frames 17 and the down frames 19 on the same left and right side. The gusset pipe 21 branches off to the left and right from a middle portion near the upper part in the vertical direction of the down frame 19 and extends rearward. The rear end portions of the gusset pipes 21 are respectively connected to the front-rear middle portions of the left and right main frames 17 on the same left and right side.

[0022] The cross member 22 extends in the vehicle width direction and connects the rear portions of the pair of main frames 17 (or the upper portions of the pair of pivot frames 18). A cushion support bracket 22a extending upward and rearward is fixed to the inside of the cross member 22 in the vehicle width direction. An upper end portion of the rear cushion 32 and the battery unit 100 are connected to the cushion support bracket 22a.

[0023] The lower cross member 23 extends in the vehicle width direction and connects the lower parts of the pair of pivot frames 18 below the pivot shaft 33. A link support bracket 23a extending rearward is fixed to the inside of the lower cross member 23 in the vehicle width direction. A front end of a link arm 34 is connected to the link support bracket 23a.

[0024] The body frame 5 further includes a pair of left and right seat rails 24 and a pair of left and right support rails 25. The front end of each of the left and right seat rails 24 is connected to the upper end of the pivot frame 18 on the same left or right side. Each of the left and right seat rails 24 extends rearward and upward from its front end. A seat 9 is disposed above the left and right seat rails 24. The front and rear intermediate portions of the left and right seat rails 24 are connected to each other via a seat support bracket 28 that receives the load from the seat 9.

[0025] The left and right support rails 25 are located below the left and right seat rails 24. The front end of each of the left and right support rails 25 is connected to the upper and lower middle portion of the pivot frame 18 on the same left or right side. Each of the left and right support rails 25 extends rearward and upward from its front end. The rear end of each of the left and right support rails 25 is connected from below to the rear portion of the seat rail 24 on the same left or right side.

[0026] The rear portions of the left and right seat rails 24 are connected to each other by a cross rail 26 extending in the vehicle width direction. The pair of left and right seat rails 24, the pair of left and right support rails 25, and the cross rail 26 are joined together by welding or the like. Hereinafter, the assembly in which these frame members are integrated inseparably is referred to as a subframe that is detachable from the frame main body. The subframe corresponds to a seat frame that supports the seat 9 from below.

[0027] The body frame 5 is of a semi-double cradle type. The body frame 5 mounts a power unit 8 including a motor 50 below the rear portions of the left and right main frames 17 behind the head pipe 16 and in front of the left and right pivot frames 18. The body frame 5 surrounds the power unit 8 from the front and below by a single down frame 19 and left and right lower frames 20.

[0028] A power unit 8 for running the vehicle is mounted inside the body frame 5, as well as a battery unit 100 for storing electricity to be supplied to the power unit 8. The body frame 5 allows the battery unit 100 to be inserted and removed from above through an opening between the left and right main frames 17. The front portions of the left and right main frames 17 and the gusset pipes 21 have a large curvature outward in the vehicle width direction to ensure clearance with the front portion of the battery unit 100.

[0029] The body cover 6 covers the body frame 5 etc. The body cover 6 includes a pair of left and right front side cowls 41 and a pair of left and right rear side cowls 42. The pair of front side cowls 41 are disposed from below both the left and right sides of the front of the seat 9 to positions overlapping with the upper parts of the down frames 19 in a side view seen in the vehicle width direction. Each front side cowl 41 extends from below the front of the seat 9 toward the front in a fan-like manner in a side view. Each front side cowl 41 extends so as to straddle the outer side of the main frame 17 on the same left or right side in the vehicle width direction from front to rear. At least one of the front side cowls 41 functions as an air guide plate (radiator shroud) for the radiator 91 supported on the side of the down frame 19.

[0030] The pair of rear side cowls 42 are disposed below the left and right sides of the rear of the seat 9 in a side view. Each rear side cowl 42 is disposed so as to cover the left and right seat rails 24 and the support rails 25 on the same side from the outside in the vehicle width direction. A rear fender 43r extends rearward behind the seat 9. The rear fender 43r is disposed above the rear wheel 3 with a gap therebetween. In the drawing, reference numeral 43f denotes a front fender that is disposed above the front wheel 2 with a gap therebetween and supported by the bottom bridge 12. A top cover 44 is disposed in front of the seat 9 between the upper ends of the front-rear middle parts of the pair of front side cowls 41. The top cover 44 covers an upward protruding part 110 (see FIG. 2) of the battery unit 100 from above.

[0031] The rear wheel suspension system 7 includes a swing arm 30 which supports the rear wheel 3 at its rear end, a link mechanism 31 which connects the front part of the swing arm 30 to the lower cross member 23, and a rear cushion 32 which spans between the link mechanism 31 and the cross member 22. The swing arm 30 is disposed below the rear of the vehicle body and extends in the front-rear direction. The front end of the swing arm 30 is supported by a pair of pivot frames 18 via pivot shafts 33 so as to be able to swing up and down.

[0032] The link mechanism 31 includes a pair of left and right link arms 34 and a link member 35. The pair of link arms 34 are disposed below the front portion of the swing arm 30 in a side view and extend in the front-rear direction. A front end portion of the link arm 34 is rotatably connected to the link support bracket 23a of the lower cross member 23 via a shaft extending along the vehicle width direction. A rear end portion of the link arm 34 is rotatably connected to the link member 35 via a shaft extending along the vehicle width direction.

[0033] The link member 35 is formed in a roughly triangular shape in a side view. An upper apex of the link member 35 is rotatably connected to a link connecting portion at the front-rear middle portion of the swing arm 30 via a shaft along the vehicle width direction. A lower apex of the link member 35 is rotatably connected to a rear end portion of the link arm 34 via a shaft along the vehicle width direction. A front apex of the link member 35 is rotatably connected to a lower end portion of the rear cushion 32 via a shaft along the vehicle width direction.

[0034] The rear cushion 32 is provided on the inside in the vehicle width direction of the rear part of the vehicle body (for example, on the vehicle width center CL). The rear cushion 32 is formed in a cylindrical shape with a compression coil spring arranged on the outer periphery of a damper cylinder, and is arranged with the axial direction tilted forward with respect to the vertical direction. The upper end of the rear cushion 32 is rotatably connected to the cushion support bracket 22a of the cross member 22 via a shaft along the vehicle width direction. The lower end of the rear cushion 32 is rotatably connected to the front top of the link member 35 via a shaft along the vehicle width direction. In the embodiment, a configuration in which a single rear cushion 32 is provided on the inside in the vehicle width direction is illustrated, but the present invention is not limited to this configuration. For example, other configurations may be used, such as a configuration in which a pair of left and right rear cushions 32 are provided between the rear part of the swing arm 30 and the seat frame.

[0035] The power unit 8 includes a motor 50 for driving the vehicle, a reduction gear (not shown) that reduces the output of the motor 50, an output shaft 70 that outputs the power of the motor 50 reduced by the reduction gear, a PCU (Power Control Unit) 130 that controls the motor 50, and a housing 80 that accommodates the motor 50, driving parts such as the reduction gear, and the PCU 130.

[0036] The power unit 8 is configured as an integrated unit including the motor 50, the reducer, the output shaft 70, the PCU 130, and the housing 80. The PCU 130 is disposed below the motor 50. The housing 80 forms the outer shape of the power unit 8. The power unit 8 can be cooled by a water-cooling system including a radiator 91.

[0037] The motor 50 is disposed with its rotation axis oriented along the vehicle width direction. The motor 50 is accommodated in a motor case 54 formed in an upper portion of the housing 80. A gear-type reducer is disposed on one of the left and right sides of the motor 50. The output shaft 70 is disposed at the rear lower part of the motor case 54. The output shaft 70 extends in the vehicle width direction, with the left end portion protruding outside the housing 80. The left end portion of the output shaft 70 and the rear wheel 3 are linked via a chain-type transmission mechanism 77. This allows the output of the motor 50 to be transmitted to the rear wheel 3.

[0038] The PCU 130 is a control device including a PDU (Power Drive Unit) which is a motor driver, an ECU (Electric Control Unit) which controls the PDU, etc. The PDU includes an inverter, and converts the current supplied from the battery unit 100 from DC to AC, and then supplies the current to the motor 50. The PCU 130 is accommodated in a PCU case 81 of the housing 80.

[0039] The housing 80 includes, in addition to the motor case 54, a PCU case 81 that houses the PCU 130. The PCU case 81 is disposed below the motor case 54. The PCU case 81 houses the PCU 130 therein. A front portion of the PCU case 81 protrudes forward beyond the front end portion of the motor case 54.

[0040] The power unit 8 (housing 80) is supported on the body frame 5 via a plurality of fixing parts (including rubber mounts). The power unit 8 is disposed in front (on the inner periphery) of the pivot frame 18, which is curved in a convex arc shape convex rearward in side view. The power unit 8 is disposed above the lower frame 20. The power unit 8 is disposed below the lower rear end portion of the main frame 17 in side view. An upper portion (motor case 54) of the power unit 8 is disposed at a distance behind the down frame 19, and a lower portion (PCU case 81) extends to the vicinity of the lower end portion of the down frame 19. The lower portion of the PCU case 81 is covered by an undercover 27 attached to the lower frame 20.

[0041] FIG. 4 is a perspective view of the battery unit 100, and FIG. 5 is a left side view showing the inside of the battery unit 100. As shown in FIG. 1 to 5, the battery unit 100 is formed in a generally L-shape in a side view, and is disposed from the front to the upper side of the power unit 8. The battery unit 100 has a constant left-right width overall, and is disposed so as to be contained between the inner surfaces of the left and right main frames 17 in the vehicle width direction in a plan view. The battery unit 100 has a generally square shape in a side view and includes a central portion 101 disposed at a position overlapping with the main frames 17, a rearward extending portion 102 extending rearward from the rear end of the central portion 101, and a downward extending portion 103 extending downward from the lower end of the central portion 101.

[0042] The central portion 101 is disposed so that its rear upper portion protrudes above the main frame 17 and its front lower portion protrudes below the main frame 17 in a side view. The portion of the central portion 101 that protrudes above the main frame 17 is covered from the outside in the vehicle width direction by the rear portion of the front side cowl 41. The main frame 17 is disposed so as to diagonally cross the outside of the central portion 101 in the vehicle width direction. The front end portion of the central portion 101 is supported by the upper and lower middle portion of the down frame 19 via a first mount bracket 45. In the drawing, reference symbol 101a indicates a first mount portion provided at the front end portion of the central portion 101.

[0043] The rearward extending portion 102 extends rearward between the upper end of the rear cushion 32 and the lower surface of the seat 9 in the up-down direction. The rearward extending portion 102 extends rearward to a position where it overlaps with the front-rear middle portion of the seat rail 24 in a side view. The seat support bracket 28 is formed in a U-shape so as to straddle the rearward extending portion 102 from above to the left and right. The lower end of the rearward extending portion 102 is supported by the cross member 22 via a second mount bracket 46. The second mount bracket 46 is formed integrally with, for example, the cushion support bracket 22a. In the drawing, reference numeral 102a denotes a second mount portion provided at the lower end of the rearward extending portion 102. A 12V battery 29 for auxiliary equipment is disposed further rearward of the rear extension 102. The 12V battery 29 is supported at the rear portion of the seat frame. Reference numeral 43i in the drawing denotes a rear inner fender that is supported by the support rail 25 and prevents the rear wheel 3 from being lifted up.

[0044] The downward extension portion 103 extends downward in the front-rear direction between the lower part of the down frame 19 and the motor case 54 of the power unit 8. The downward extension portion 103 extends to the vicinity of the upper surface of the PCU case 81. The lower end portion of the downward extension portion 103 is supported on the front end portions of the left and right lower frames 20 via third mount brackets 47. In the drawing, reference symbol 103a denotes a third mount portion provided at the lower end portion of the downward extension portion 103.

[0045] The battery unit 100 includes a center plate 105 located on the vehicle width center CL, a pair of left and right battery assemblies 106 arranged on both the left and right sides of the center plate 105, and a pair of left and right battery covers 107 covering the left and right battery assemblies 106. The battery unit 100 is provided symmetrically overall with the vehicle width center CL as the axis of symmetry. By providing the battery units 100, which are heavy objects, symmetrically, the impact of the vehicle weight on the left and right balance is reduced.

[0046] Each battery assembly 106 is formed by combining a plurality of battery modules 108. Each battery module 108 has a generally rectangular parallelepiped shape that is long in one direction, and is arranged with its length aligned along the front-rear direction or the up-down direction. Each battery module 108 is formed by arranging a plurality of battery cells 109 vertically and horizontally. Each battery cell 109, and therefore each battery module 108, is arranged with its position aligned in the vehicle width direction.

[0047] Each battery module 108 has a slender outer shape that is long in one direction, making it easy to arrange even in a small space. The battery unit 100 can easily be formed into a shape that fits the available space in the vehicle body by changing the overall outer shape by rearranging the multiple battery modules 108. By increasing the degree of freedom in the shape of the heavy battery unit 100 and increasing the degree of freedom in arranging it in the available space in the vehicle body, the impact on the center of gravity of the vehicle can be reduced.

[0048] The central portion 101, which is square in side view, is formed by, for example, arranging three battery modules 108 with their length direction facing up and down, and arranging these three battery modules 108 side by side in the front-to-rear direction. The rearward extending portion 102, which is rectangular in side view, is formed by arranging one battery module 108 with its length direction facing up and down. The downward extending portion 103, which is rectangular in side view, is formed by arranging one battery module 108 with its length direction facing up and down.

[0049] The upper end of the battery unit 100 is provided with an upward protrusion 110 that houses electrical components such as a contactor. The upward protrusion 110 protrudes above the main frame 17 in a side view, and is covered from above by the top cover 44. The upward protrusion 110 is provided with a plate extension 111 that extends the upper end of the center plate 105 above the upper end of the battery assembly 106. Electrical components such as a contactor are attached to both the left and right sides of the plate extension 111. The upper ends of the left and right battery covers 107 are provided with cover extensions 112 that extend above the upper end of the battery assembly 106 in accordance with the plate extension 111. The left and right cover extensions 112 cover the plate extensions 111 from the left and right outer sides, suppressing exposure of electrical components such as a contactor to the outside of the vehicle.

[0050] The rear portions of the plate extension 111 and the left and right cover extensions 112 are located below the front portion of the seat 9 that is inclined upward toward the front. The upper rear portions of the plate extension 111 and the left and right cover extensions 112 are formed in an inclined shape that inclines upward toward the front in side view in accordance with the inclination of the front portion of the seat 9. The outer portions of the left and right cover extensions 112 in the vehicle width direction are formed in an inclined chamfered shape so that they are positioned lower as they move outward in the vehicle width direction. This prevents the upward protrusion 110 from becoming bulky, and the top cover 44 has a rounded, compact shape.

[0051] The front end of the battery unit 100 is provided with an upward protrusion 110 and a cable connection part 114 that protrudes forward from the front end part above the central part 101. One end of a high-voltage cable (positive cable and negative cable) extending from the PCU is connected to the cable connection part 114, and one end of a low-voltage cable extending from the 12V battery 29 is connected to the cable connection part 114. A driving current is supplied from the battery unit 100 to the PCU 130 via the high-voltage cable, and a driving current is supplied from the 12V battery 29 to electrical components such as a contactor via the low-voltage cable.

[0052] Fig. 6 is a plan view (top view) of the peripheral portion of the fixing portion 47 that fastens the battery unit 100 and the power unit 8. Fig. 6 shows a state in which the power unit 8 and the like have been removed. Fig. 7 is a left side view of the peripheral portion of the fixing portion 47. 6 and 7, the battery unit 100 and the power unit 8 are fastened to the down frame 19 via a fixing portion 47 (corresponding to a third mounting bracket). The fixing portion 47 has an integral protrusion shape.

[0053] The fixing portion 47 has a shape in which an upper edge is bifurcated and protrudes upward in a side view, and a lower edge extends at an incline downward toward the rear so as to follow the down frame 19. The fixing portion 47 is formed in a plate shape having a thickness in the vehicle width direction. The fixing portion 47 includes a front protrusion 47a (an example of a first support portion) that protrudes rearward and upward from a front portion in a side view, and a rear protrusion 47b (an example of a second support portion) that protrudes rearward and upward from a portion rearward and lower than the front protrusion 47a. The protrusion height (upper end position) of the front protrusion 47a is higher than the protrusion height (upper end position) of the rear protrusion 47b.

[0054] The battery unit 100 includes a downward extension portion 103 that extends downward between the lower portion of the down frame 19 and the motor case 54. The downward extension portion 103 extends to the vicinity of the upper surface of the front portion of the PCU case 81. A third mount portion 103a is provided at the front lower end portion of the downward extension portion 103. The third mount portion 103a is fastened to a front protrusion portion 47a of the fixing portion 47.

[0055] The power unit 8 includes a motor 50 (an example of a drive device) and a PCU 130 (an example of a control device) at least a portion of which is disposed below the motor 50. A portion of the PCU 130 disposed below the motor 50 is fastened to the fixed portion 47. A PCU case 81 disposed below the motor case 54 is fastened to the fixed portion 47. A front portion of the PCU case 81 protrudes forward beyond the front end portion of the motor case 54. A front portion (protrusion 81a) of the PCU case 81 is fastened to a rear protrusion 47b of the fixed portion 47.

[0056] The PCU 130 includes a terminal unit 82 for transmitting and receiving signals or power to and from the outside. At least a portion of the terminal unit 82 overlaps with the fixed portion 47 in a side view. For example, the terminal unit 82 is a cable provided for driving a water pump (not shown). The terminal unit 82 includes a plug 82a disposed on the PCU 130 side and a cable main body 82b extending from the plug 82a.

[0057] The plug 82a extends upward and forward from the front of the PCU 130, passing below the bolts 48a, 48b in a side view. The rear end of the plug 82a overlaps with the front of the PCU case 81 in a side view. The front end of the plug 82a overlaps with the vicinity of the lower end of the down frame 19 (the portion between the fixing portion 47 and the lower frame 20 in the up-down direction) in a side view.

[0058] The plug 82a is inclined so that its rear end is located at the vehicle width center CL and its front end is located to the left of the vehicle width center CL in a top view. The cable main body 82b curves and extends from the front end of the plug 82a toward the left front in a top view. In this embodiment, a part of the plug 82a in the terminal portion 82 (a part near the front-rear center) overlaps with the rear lower part of the fixing portion 47 (a part below the bolt 48b inserted through the rear protrusion 47b) in a side view.

[0059] A plurality of fixing portions 47 are provided at intervals in the vehicle width direction. The plurality of fixing portions 47 include a first fixing portion 47L arranged on one side in the vehicle width direction of the terminal portion 82 and a second fixing portion 47R arranged on the other side in the vehicle width direction of the terminal portion 82. At least a portion of the terminal portion 82 overlaps with the first fixing portion 47L and the second fixing portion 47R in a side view.

[0060] The lower part of the down frame 19 has an extending portion 19c that branches to the left and right and extends downward and rearward so as to be connected to the pair of lower frames 20. The first fixing portion 47L corresponds to a left third mount bracket provided on the left extending portion 19c of the lower part of the down frame 19. The second fixing portion 47R corresponds to a right third mount bracket provided on the right extending portion 19c of the lower part of the down frame 19. The first fixing portion 47L and the second fixing portion 47R have outer edge shapes that overlap each other in a side view.

[0061] In the embodiment, a portion (a portion toward the front-to-rear center) of plug 82a of terminal portion 82 is positioned between the first fixing portion 47L on the left side and the second fixing portion 47R on the right side, and overlaps with the rear lower portions (the lower portions of bolt 48b inserted into rear protrusion portion 47b) of each of the first fixing portion 47L and the second fixing portion 47R in a side view.

[0062] The down frame 19 has a bent portion 19b. The fixing portion 47 is provided on the bent portion 19b. The down frame 19 has an L-shape with the bent portion 19b at a front lower portion in a side view. The down frame 19 has a pair of extension portions 19c extending rearward and downward from the bent portion 19b in a side view.

[0063] The fixing portion 47 is provided such that its front portion is located near the bent portion 19b and its rear portion is located on the lower end side of the extending portion 19c (near the front end of the lower frame 20). The fixing portion 47 is integrally joined to a portion of the down frame 19 near the bent portion 19b. For example, the fixing portion 47 may be formed integrally with the portion of the down frame 19 near the bent portion 19b using the same member.

[0064] Bolts 48a, 48b extending in the vehicle width direction are fastened to the first fixing portion 47L and the second fixing portion 47R. In this embodiment, the battery unit 100 and the power unit 8 are fastened to the down frame 19 via the fixing portions 47 by the two bolts 48a, 48b. At least a portion of the bolt 48a (an example of a first fastening member) for fastening the front protrusion 47a overlaps with the bolt 48b (an example of a second fastening member) for fastening the rear protrusion 47b when viewed from the front-rear direction.

[0065] For example, the bolt 48a is inserted from the left into the through-hole of the front protrusion 47a of the first fixing portion 47L, and is made to protrude through the through-hole of the third mounting portion 103a of the downward extending portion 103 of the battery unit 100 and the through-hole of the front protrusion 47a of the second fixing portion 47R, and is screwed into the nut 49. In this manner, the third mounting portion 103a of the battery unit 100 can be fastened to the down frame 19 via the front protrusions 47a of both fixing portions 47L and 47R with one bolt 48a.

[0066] For example, the bolt 48b is inserted from the left into the through hole of the rear protrusion 47b of the first fixing portion 47L, and the bolt 48b is made to protrude through a through hole in the front part (protrusion 81a) of the PCU case 81 of the power unit 8 and a through hole in the rear protrusion 47b of the second fixing portion 47R, and is screwed into the nut 49. In this manner, the protrusion 81a of the power unit 8 can be fastened to the down frame 19 via the rear protrusions 47b of both fixing portions 47L, 47R with one bolt 48b.

[0067] The battery unit 100 and the power unit 8 may be fastened with three or more bolts, not limited to the above. For example, the manner in which the battery unit 100 and the power unit 8 are fastened (the number and locations of bolts and nuts) is not limited to the above, and can be changed according to design specifications.

[0068] As described above, the electric motorcycle 1 in the above embodiment includes the head pipe 16 that supports the steering handlebars 13 of the electric motorcycle 1, the down frame 19 that extends downward from the head pipe 16, the power unit 8 that drives the electric motorcycle 1, and the battery unit 100 that supplies driving power to the power unit 8. The battery unit 100 and the power unit 8 are fixed to the down frame 19 via fixing parts 47. The fixing parts 47 are in the form of an integral protrusion. According to this configuration, even when two components, the battery unit 100 and the power unit 8, are fixed, the strength of the fixing portion 47 can be increased because the fixing portion 47 has an integral protrusion shape. In addition, the number of components can be reduced compared to a case where the two components are fixed to separate brackets. Therefore, it is possible to provide a vehicle body structure that has improved safety and productivity by reducing the number of components and processing man-hours while increasing the strength of the fixing portion 47.

[0069] In the above embodiment, the power unit 8 includes the motor 50 and the PCU 130, at least a portion of which is disposed below the motor 50. A portion 81 of the PCU 130 disposed below the motor 50 is fixed to the fixing portion 47. According to this configuration, by fixing a portion 81 of the PCU 130 that is located below the motor 50 to the highly rigid fixing portion 47, vibrations of the motor 50 can be suppressed as much as possible, and the transmission of vibrations to the PCU 130 can be prevented.

[0070] In the above embodiment, the PCU 130 includes the terminal portion 82 for transmitting and receiving signals or power to and from the outside. At least a portion of the terminal portion 82 overlaps with the fixed portion 47 in a side view. According to this configuration, at least a portion of the terminal portion 82 can be protected from the side by the fixing portion 47.

[0071] In the above embodiment, a plurality of fixing portions 47 are provided at intervals in the vehicle width direction. The plurality of fixing portions 47 include a first fixing portion 47L arranged on one side of the terminal portion 82 in the vehicle width direction and a second fixing portion 47R arranged on the other side of the terminal portion 82 in the vehicle width direction. At least a portion of the terminal portion 82 overlaps with the first fixing portion 47L and the second fixing portion 47R in a side view. According to this configuration, at least a portion of the terminal portion 82 can be protected by the fixing portion 47 from both sides.

[0072] In the above embodiment, the down frame 19 includes the bent portion 19b. The fixing portion 47 is provided on the bent portion 19b. According to this configuration, the bent portion 19b of the down frame 19 has strength greater than other portions (for example, straight portions), so that the fixing portion 47 can be provided in a portion having greater strength.

[0073] In the above embodiment, the fixing portion 47 includes a first support portion 47a that supports a front lower portion of the battery unit 100, and a second support portion 47b that supports a front lower portion of the power unit 8. At least a portion of a first fastening member 48a for fastening the first support portion 47a overlaps with a second fastening member 48b for fastening the second support portion 47b when viewed from the front-rear direction. According to this configuration, the two components, the battery unit 100 and the power unit 8, can be fastened together by effectively utilizing the limited space.

[0074] <Modification> In the above embodiment, the power unit includes a drive device and a control device at least a part of which is disposed below the drive device, and the control device is fixed to the fixed portion by a portion of the control device that is disposed below the drive device. However, the present invention is not limited to this. For example, the drive device may be fixed to the fixed portion. For example, the manner in which the power unit is fixed to the fixed portion can be changed according to design specifications.

[0075] In the above embodiment, the control device includes a terminal portion for transmitting and receiving a signal or power to and from the outside, and at least a part of the terminal portion overlaps with the fixed portion in a side view. However, this is not limited to the above. For example, the entire terminal portion does not need to overlap with the fixed portion in a side view. For example, the manner in which the terminal portion overlaps with the fixed portion in a side view can be changed according to the design specifications.

[0076] In the above embodiment, the fixing portions are provided at intervals in the vehicle width direction, and the fixing portions include a first fixing portion arranged on one side of the terminal portion in the vehicle width direction and a second fixing portion arranged on the other side of the terminal portion in the vehicle width direction, and at least a portion of the terminal portion overlaps with the first fixing portion and the second fixing portion in a side view. However, this is not limited to the above example. For example, one fixing portion may be provided in the vehicle width direction. For example, at least a portion of the terminal portion may overlap with one fixing portion in a side view. For example, the aspect of the fixing portions (such as the number and location) can be changed according to the design specifications.

[0077] In the above embodiment, the down frame has a bent portion, and the fixing portion is provided at the bent portion. However, the present invention is not limited to this. For example, the fixing portion may be provided at a portion other than the bent portion (for example, a straight portion). For example, the installation mode of the fixing portion may be changed according to the design specifications.

[0078] In the above embodiment, the fixing portion includes a first support portion that supports a front lower portion of the battery unit and a second support portion that supports a front lower portion of the power unit, and at least a part of the first fastening member for fastening the first support portion overlaps with the second fastening member for fastening the second support portion when viewed from the front-rear direction. However, the present invention is not limited to this. For example, the entire first fastening member does not need to overlap with the second fastening member when viewed from the front-rear direction. For example, the manner in which the first fastening member overlaps with the second fastening member when viewed from the front-rear direction can be changed according to the design specifications.

[0079] In the above embodiment, the power unit is described as including a motor for driving a vehicle (an example of a drive device) and a PCU (an example of a control device) that controls the motor, but is not limited thereto. For example, the power unit may be configured to include an engine (an example of a drive device) and an ECU (an example of a control device) that controls the engine. For example, the configuration of the power unit (the configuration of the drive device and the control device) can be changed according to the design specifications.

[0080] The present invention is not limited to the above-described embodiment, and the configuration of the embodiment may be applied to various saddle-ride vehicles, not limited to off-road motorcycles. Saddle-ride vehicles include all vehicles on which a driver straddles the vehicle body, and include not only motorcycles (including motorized bicycles and scooter-type vehicles), but also three-wheeled vehicles (including vehicles with one front wheel and two rear wheels, as well as vehicles with two front wheels and one rear wheel) or four-wheeled vehicles (such as four-wheeled buggies). The configurations in the above-described embodiments are merely examples of the present invention, and various modifications are possible without departing from the gist of the present invention, such as replacing the components of the embodiments with well-known components. [Explanation of symbols]

[0081] 1 Electric two-wheeler (vehicle) 8. Power Unit 13 Steering handle 16 Head pipe 19 Down Frame 19b Bend part 47 Third mounting bracket (fixed part) 47a Front protrusion (first support part) 47b Rear protrusion (second support part) 47L Third mounting bracket on the left side (first fixed part) 47R Right side third mounting bracket (second fixed part) 48a Bolt (first fastening member) 48b Bolt (second fastening member) 50 Motor (drive unit) 81 PCU case (the part of the control device that is located below the drive unit) 82 Terminal section 100 Battery Unit 130 PCU (control unit)

Claims

1. A head pipe (16) for supporting a steering handle (13) of a vehicle (1); a down frame (19) extending downward from the head pipe (16); A power unit (8) for driving the vehicle (1); a battery unit (100) that supplies driving power to the power unit (8), The battery unit (100) and the power unit (8) are fixed to the down frame (19) via fixing parts (47), The fixing portion (47) is an integral protrusion shape. vehicle.

2. The power unit (8) includes a drive device (50) and a control device (130) at least a portion of which is disposed below the drive device (50), A portion (81) of the control device (130) arranged below the drive device (50) is fixed to the fixed portion (47).

2. The vehicle of claim 1.

3. The control device (130) includes a terminal unit (82) for transmitting and receiving signals or power to and from the outside, At least a portion of the terminal portion (82) overlaps with the fixing portion (47) in a side view.

3. A vehicle as claimed in claim 2.

4. The fixing portion (47) is provided in a plurality of locations spaced apart in the vehicle width direction, The multiple fixing portions (47) include a first fixing portion (47L) arranged on one side of the terminal portion (82) in the vehicle width direction and a second fixing portion (47R) arranged on the other side of the terminal portion (82) in the vehicle width direction, At least a portion of the terminal portion (82) overlaps with the first fixing portion (47L) and the second fixing portion (47R) in a side view.

4. The vehicle according to claim 3.

5. The down frame (19) has a bent portion (19b), The fixing portion (47) is provided on the bending portion (19b). A vehicle according to any one of claims 1 to 4.

6. The fixing portion (47) is A first support portion (47a) for supporting a front lower portion of the battery unit (100); a second support portion (47b) that supports a front lower portion of the power unit (8), At least a portion of a first fastening member (48a) for fastening the first support portion (47a) overlaps with a second fastening member (48b) for fastening the second support portion (47b) when viewed from the front-rear direction. A vehicle according to any one of claims 1 to 4.

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