WO2019065474A1 - 鞍乗型電動車両 - Google Patents

鞍乗型電動車両 Download PDF

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Publication number
WO2019065474A1
WO2019065474A1 PCT/JP2018/034929 JP2018034929W WO2019065474A1 WO 2019065474 A1 WO2019065474 A1 WO 2019065474A1 JP 2018034929 W JP2018034929 W JP 2018034929W WO 2019065474 A1 WO2019065474 A1 WO 2019065474A1
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WO
WIPO (PCT)
Prior art keywords
electric
vehicle
frame
swing arm
arm
Prior art date
Application number
PCT/JP2018/034929
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
洋明 大場
義隆 小林
拓郎 堂面
倫人 新井
Original Assignee
本田技研工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to JP2019545042A priority Critical patent/JP6864108B2/ja
Priority to CN201880056325.8A priority patent/CN111051191B/zh
Publication of WO2019065474A1 publication Critical patent/WO2019065474A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J43/00—Arrangements of batteries
    • B62J43/10—Arrangements of batteries for propulsion
    • B62J43/16—Arrangements of batteries for propulsion on motorcycles or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J43/00—Arrangements of batteries
    • B62J43/20—Arrangements of batteries characterised by the mounting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • B62K11/02—Frames
    • B62K11/10—Frames characterised by the engine being over or beside driven rear wheel

Definitions

  • the present invention relates to a straddle-type electric vehicle such as an electric motorcycle having rear wheels driven by an electric motor.
  • a straddle-type electric vehicle such as an electric motorcycle having rear wheels driven by an electric motor.
  • a power supply unit such as a battery or a power drive unit is mounted on the body frame side, and the power supply unit and the electric motor are connected by an electric cable.
  • a tensile load may be generated on the electric cable due to the swing of the swing arm as the vehicle travels.
  • extra length parts such as a bending part, are provided in an electric cable, and the reduction of a tensile load is aimed at by the extra length part.
  • the aspect of the present invention provides a straddle-type electric vehicle capable of suppressing the load acting on the electric cable as much as possible when the swing arm swings.
  • a head pipe for steerably holding a front wheel, a down frame portion extending downward and rearward from the head pipe, a rear frame portion extending upward from a rear portion of the down frame portion;
  • a swing arm which is swingably supported by the rear frame portion and has a rear wheel supported at its rear portion; an electric motor attached to the swing arm and driving the rear wheel; the head pipe, the down frame And a power supply unit attached to a vehicle body frame including the rear frame unit and supplying power to the electric motor; and an electric cable electrically connecting the power supply unit and the electric motor.
  • a straddle-type electric vehicle further comprising an arm support member protruding toward the rear of the vehicle from a lower region of the rear frame portion, In the vicinity of the rear end of the arm support member, there is provided a pivot shaft pivotally supporting the front portion of the swing arm, and above the region straddling the arm support member and the front region of the swing arm An arrangement space is provided in which the electric cable is arranged.
  • the pivot shaft is received by the arm support member projecting toward the rear of the vehicle from the lower region of the rear frame portion, and the front of the swing arm is spaced apart from the lower region of the rear frame portion to the rear of the vehicle Supported by the pivot shaft.
  • the electric cable which connects an electric power supply part and an electric motor is wired above the area
  • the electric cable is disposed above the area straddling the arm support member and the front area of the swing arm, the electric cable is less likely to interfere with the surrounding members when the swing arm swings.
  • the arm support member has a lower inclined portion extending obliquely downward and rearward from the rear frame portion, and a front region of the swing arm is connected to the connection portion with the pivot shaft.
  • a concave portion having a substantially V-shaped side view formed by the lower inclined portion and the upper inclined portion constitutes a part of the wiring space. At least a portion of the electrical cable may be routed within the recess.
  • a concave portion substantially V-shaped in side view is formed on the upper surface side of the region spanning the arm support member and the front region of the swing arm, and the pivot shaft is disposed near the bottom of the concave portion Be done.
  • the electric cable is arranged closer to the swing center (pivot shaft) of the swing arm. Therefore, when this configuration is adopted, it becomes more difficult for the load to act on the electric cable when the swing arm swings.
  • a part of the electric cable is bent from one side to the other side in the vehicle width direction and wired in the wiring space, and one side of the electric cable from the vehicle width direction At least a portion of the other side bending region may be disposed so as to overlap the axis of the pivot shaft in top view.
  • a battery support frame supporting a battery above the wiring space is attached to the rear frame portion, and a cable support portion supporting the electric cable is attached to the battery support frame. It may be provided.
  • the wiring space is located below the battery support frame that supports the battery, and the electrical cable installed in the wiring space is supported by the battery support frame via the cable support. Therefore, the electric cable can be supported on the vehicle body frame at a position close to the pivot shaft. Therefore, when this configuration is adopted, it is possible to suppress the swing of the electric cable accompanying the swing of the swing arm.
  • the power supply unit includes a power drive unit that converts power of the battery into three-phase alternating current and supplies the three-phase alternating current to the electric motor, and the electric cable connects the power drive unit and the electric motor It may include three-phase electric wires.
  • the outer diameter of the electric cable in which the three-phase electric wires are bundled is increased. For this reason, when a deformation load such as bending or twist acts on the electric cable due to the swing of the swing arm, stress concentration is likely to be generated in a part of the electric cable due to the deformation load. However, since the electrical cable is routed close to the pivot axis, it is possible to avoid that a large stress concentration occurs in a part of the electrical cable.
  • the electric cable is covered with a protective material around the bundle of three-phase electric wires, and the maximum outer diameter of the protective material is larger than the outer diameter of the pivot shaft. Also good.
  • the load acting on the electric cable can be suppressed as much as possible when the swing arm swings be able to.
  • FIG. 1 is a left side view of a straddle-type electric vehicle according to an embodiment. It is the left view which removed some parts of the saddle-ride type electric vehicle concerning an embodiment.
  • FIG. 2 is a left side view of a vehicle body frame of the straddle-type electric vehicle according to the embodiment. 1 is a perspective view of a vehicle body frame of a straddle-type electric vehicle according to an embodiment.
  • FIG. 2 is a top view of a vehicle body frame of the straddle-type electric vehicle according to the embodiment.
  • FIG. 6 is a cross-sectional view of the straddle-type electric vehicle according to the embodiment, taken along the line VI-VI in FIG. 1; It is the perspective view which looked at the main arm concerning embodiment from the left front upper part.
  • FIG. 1 is a bottom view of a straddle-type electric vehicle according to an embodiment.
  • FIG. 9 is a cross-sectional view of the straddle-type electric vehicle according to the embodiment, taken along line XX in FIG. 8;
  • FIG. 10 is a cross-sectional view of a straddle-type electric vehicle according to an embodiment, taken along line XI-XI of FIG. 9;
  • 1 is a perspective view of a battery support frame of a straddle-type electric vehicle according to an embodiment.
  • FIG. 1 is a view showing the left side of an electric motorcycle 1 which is one form of a straddle-type electric vehicle.
  • the motorcycle 1 according to the present embodiment is a scooter type vehicle having a step floor 9 on which a driver sitting on a seat 8 places a foot sole.
  • the motorcycle 1 includes a front wheel 3 which is a steered wheel, and a rear wheel 4 which is a drive wheel.
  • the front wheel 3 is rotatably supported by a pair of left and right front forks 6.
  • the front wheel 3 is steerable by the bar handle 2.
  • a front fender 50 F covering the upper side of the front wheel 3 is supported by the front fork 6.
  • the rear wheel 4 is supported at the rear of a swing arm 20 swingably supported by a vehicle body frame F.
  • the motorcycle 1 of the present embodiment is a unit swing type motorcycle.
  • Mounted on the swing arm 20 are an electric motor 30 for driving the vehicle, and a reduction mechanism 35 (see FIG. 6) for decelerating the driving force of the electric motor 30 and transmitting it to the rear wheel axle 4a.
  • a rear fender 50R covering the rear upper portion of the rear wheel 4 is supported via a fender support arm 40.
  • the lower end portion of a rear cushion 7 which is a suspension component on the rear side is connected to the fender support arm 40.
  • the motorcycle 1 includes a pair of left and right step floors 9 on which the driver sitting on the seat 8 places the soles, and a center tunnel 10 extending in the longitudinal direction of the vehicle between the left and right step floors 9.
  • the center tunnel 10 is on the front side of the seat 8 and is formed lower than the seat 8.
  • a space on the upper side of the center tunnel 10 is between the bar handle 2 and the seat 8 to form a straddle space when the driver straddles the vehicle body.
  • FIG. 2 is a left side view of the motorcycle 1 from which the seat 8 and the covers have been removed.
  • FIG. 3 is a view of a vehicle body frame F of the motorcycle 1 viewed from the left side.
  • FIG. 4 is a view of the vehicle body frame F as viewed from above the left front.
  • FIG. 5 is a view of the vehicle body frame F as viewed from above.
  • the vehicle body frame F is formed by integrally joining a plurality of types of steel materials by welding or the like.
  • the body frame F includes a head pipe 12 at the front end.
  • the head pipe 12 steerably holds the front wheel 3 via the steering stem 11 (see FIGS. 1 and 2) and the front forks 6 on the left and right.
  • the vehicle body frame F further extends downward from the lower region of the head pipe 12 after extending downward from the lower region of the head pipe 12, and then extends rearward, after which it extends downward from the substantially middle region in the vertical direction of the head pipe 12
  • a pair of left and right lower frames 14 extending upward with a slight inclination from the end to the rear, and a pair of left and right seat frames 15 extending diagonally upward from the substantially middle position in the front and rear direction of the left and right upper frames 13
  • the lower frame 14 has a down frame portion 14 a extending downward and rearward from the head pipe 12 and a rear frame portion 14 b extending upward from a rear portion of the down frame portion 14 a.
  • the upper end portion of the left rear frame portion 14b is coupled to a substantially intermediate position in the front-rear direction of the left corresponding seat frame 15.
  • the upper end portion of the right rear frame portion 14 b is coupled to a substantially intermediate position in the front-rear direction of the corresponding seat frame 15 on the right.
  • Seats 8 on which the occupants are seated are attached to the upper portions of the left and right seat frames 15.
  • the seat 8 can be opened and closed up and down with the front end side as a hinge fulcrum.
  • the rear end portion of the left upper frame 13 is coupled to the vicinity of the lower end of the left corresponding rear frame portion 14b.
  • the rear end portion of the right upper frame 13 is coupled to the vicinity of the lower end of the corresponding right rear frame portion 14b.
  • an upper region of the lower extending portion 14a-1 of the down frame portion 14a and a rear region of the rear extending portion 14a-2 are connected by a middle frame 16.
  • the lower extending portions 14a-1 of the left and right down frame portions 14a are mutually connected by the front cross member 18.
  • Front end regions of the rear extension portions 14a-2 of the left and right down frame portions 14a are mutually connected by the front lower cross member 19.
  • Rear end regions of the rear extension portions 14a-2 of the left and right down frame portions 14a are mutually connected by a cross frame 51.
  • the front cross member 18 and the front lower cross member 19 are formed of round steel pipes smaller in diameter than the lower frame 14.
  • the front cross member 18 linearly extends in the vehicle width direction.
  • the front lower cross member 19 extends in a convex curve toward the front.
  • the cross frame 51 linearly extends along the vehicle width direction, and is formed of a round steel pipe having substantially the same diameter as the lower frame 14.
  • Front regions of the left and right seat frames 15 are mutually connected by the center cross member 52.
  • Rear end portions of the left and right seat frames 15 are mutually connected by a rear cross member 53 and a rear cross plate 54.
  • the center cross member 52 extends in a convex curve toward the upper front.
  • the rear cross member 53 linearly extends in the vehicle width direction.
  • the center cross member 52 is formed of a round steel pipe having a diameter smaller than that of the seat frame 15.
  • the rear cross member 53 is formed of a round steel pipe having substantially the same diameter as the seat frame 15.
  • the rear frame portion 14 b of the left lower frame 14 and the rear area of the left corresponding seat frame 15 are connected by a support frame 17.
  • the rear frame portion 14 b of the lower frame 14 on the right and the rear area of the corresponding seat frame 15 on the right are connected by a support frame 17.
  • Rear cross members 55 interconnect the rear areas of the left and right support frames 17 with each other.
  • the rear cross member 55 extends in a downwardly convex curved shape.
  • the rear cross member 55 is formed of a round steel pipe having substantially the same diameter as the support frame 17.
  • FIG. 6 is a view showing a cross section of the motorcycle 1 along the line VI-VI in FIG.
  • the swing arm 20 is curved inward in the vehicle width direction from the front right side of the main arm 21 to the right side of the rear wheel 4 and the main arm 21 extending from the front of the rear wheel 4 to the left side of the rear wheel 4 And an extending sub arm 22.
  • the reference symbol CL in the drawing is a center line in the vehicle width direction of the vehicle.
  • the main arm 21 is provided with a motor housing 23 for housing the electric motor 30 and a reduction gear housing 24 for storing the reduction gear 35.
  • the motor housing portion 23 includes an inner cover 23a that covers the electric motor 30 from the inner side in the vehicle width direction, and an outer cover 23b that covers the electric motor 30 from the outer side in the vehicle width direction.
  • the inner cover 23a is in the form of a box that opens outward in the vehicle width direction.
  • the inner cover 23 a is integrally formed with the arm body 21 a of the main arm 21.
  • the outer cover 23b is coupled to the inner cover 23a by a fastening member such as a bolt.
  • FIG. 7 is a view of the main arm 21 as viewed from the upper left front side.
  • the main arm 21 extends from the left end of the arm base 21c extending in the vehicle width direction in front of the rear wheel 4 to the rear of the vehicle body.
  • an arm body 21a extending in an axial direction.
  • the sub arm 22 is coupled to the right side surface of the arm base 21 c.
  • extension pieces 21b extending forward are provided in a protruding manner.
  • the left and right extending pieces 21b are formed with insertion holes 56 penetrating in the vehicle width direction.
  • a pivot shaft 57 which will be described in detail later, is rotatably held in the insertion hole 56.
  • the upper surfaces from the left and right extending pieces 21b to the arm base 21c extend obliquely toward the rear upper side. This portion is an upper inclined portion 58 that extends obliquely upward and rearward from the connecting portion with the pivot shaft 57.
  • the electric motor 30 is held by the main arm 21 of the swing arm 20 and disposed on the left side of the rear wheel 4.
  • the electric motor 30 is an inner rotor type motor.
  • the electric motor 30 includes an inner rotor 32 having a motor output shaft 31 and a stator 33.
  • the electric motor 30 is disposed in the rear area of the main arm 21 of the swing arm 20.
  • the motor output shaft 31 is pivotally supported by the main arm 21 along the vehicle width direction.
  • the motor output shaft 31 has an axis Cm1 (hereinafter referred to as "motor axis Cm1”) parallel to the rear wheel axis CR (the axis of the rear wheel axle 4a).
  • Reference numerals 34a to 34c in FIG. 6 denote bearings for rotatably supporting the motor output shaft 31.
  • the inner rotor 32 is provided with a cylindrical inner rotor main body 32a and magnets 32b provided on the outer peripheral surface of the inner rotor main body 32a.
  • a radially central portion of the inner rotor main body 32 a is splined to the motor output shaft 31.
  • An object to be detected 32c is attached to the outer peripheral surface of the inner end portion of the inner rotor main body 32a in the vehicle width direction.
  • the stator 33 has an annular stator yoke 33a fixed to the outer peripheral wall of the inner cover 23a, a plurality of teeth 33b joined to the stator yoke 33a and provided radially with respect to the motor axis Cm1, and each tooth 33b. And a wound coil 33c.
  • a rotor sensor 33d is attached to the stator yoke 33a for detecting the rotational position of the inner rotor 32 by detecting the passage of the detection target 32c.
  • FIG. 8 is an enlarged view of the vicinity of the support portion of the swing arm 20 of FIG.
  • an electric cable 60 is connected to the electric motor 30.
  • the electric cable 60 is a cable that electrically connects the power supply unit on the vehicle body frame F side and the three-phase coils 33 c of the electric motor 30.
  • the periphery of the bundle of three-phase electric wires 60u, 60v, 60w is covered with a protective material 61 (see FIG. 11).
  • the thickness of the electric cable 60 is sufficiently large, and the maximum outer diameter of the protective member 61 is larger than the outer diameter of the pivot shaft 57.
  • the electric cable 60 connected to the electric motor 30 is drawn forward along the lateral side of the arm body 21 a of the swing arm 20 in the vehicle width direction.
  • the wiring portion of the electric cable 60 on the side of the arm body 21a is covered by an arm cover 39 attached to the arm body 21a, as shown in FIG.
  • the power supply unit for the electric motor 30 includes a pair of batteries 62A and 62B for storing power, and a power drive unit (PDU) 63 for converting DC power of these batteries 62A and 62B into AC power. ,have.
  • Three-phase electric wires 60 u, 60 v, 60 w of the electric cable 60 are connected to the power drive unit 63.
  • the batteries 62A and 62B and the power drive unit 63 are connected to each other by another electrical cable (not shown).
  • the power drive unit 63 is disposed in a region surrounded by the left and right down frame portions 14 a of the lower frame 14 and the left and right upper frames 13 in the vehicle body frame F, and the vehicle width direction inner region of the left and right middle frames 16. It is located in The power drive unit 63 is disposed in a space under the center tunnel 10 with a slight inclination.
  • the batteries 62 ⁇ / b> A and 62 ⁇ / b> B are arranged side by side in the battery storage portion 64 provided below the seat 8.
  • the batteries 62A and 62B are each formed substantially in the form of a rectangular parallelepiped and have the same configuration.
  • the batteries 62A and 62B are connected in series to obtain a predetermined high voltage (for example, 48 V to 72 V).
  • the batteries 62A and 62B are configured of lithium ion batteries as energy storage capable of charging and discharging.
  • the electric motor 30 is controlled by a control unit (not shown).
  • the control unit receives information from a throttle opening sensor or the like (not shown), and outputs a predetermined control signal to the driver of the electric motor 30 according to the driver's operation intention, the traveling condition, and the like.
  • the reduction mechanism 35 shown in FIG. 6 includes a transmission shaft 36 supported in parallel to the motor output shaft 31 and the rear wheel axle 4a, an inner end portion of the motor output shaft 31 in the vehicle width direction, and a vehicle width direction inner side of the transmission shaft 36. And a second gear pair 38a, 38b provided respectively at the outer side of the transmission shaft 36 in the vehicle width direction and at the left end of the rear wheel axle 4a. ing.
  • Reference numerals 4b to 4d in FIG. 6 denote bearings for rotatably supporting the rear wheel axle 4a.
  • the motor output shaft 31, the transmission shaft 36 and the rear wheel axle 4a are arranged in order from the front side at intervals in the front-rear direction.
  • the transmission shaft 36 has an axis Ct1 (hereinafter, referred to as "transmission axis Ct1") parallel to the motor axis Cm1.
  • Reference numerals 39a and 39b in FIG. 6 denote bearings for rotatably supporting the transmission shaft 36.
  • the rotation of the motor output shaft 31 is decelerated to a predetermined reduction ratio and transmitted to the rear wheel axle 4a by the above-described configuration of the reduction mechanism 35.
  • FIG. 9 is a view of the vicinity of the support portion of the swing arm 20 as viewed from below the vehicle.
  • FIG. 10 is a cross-sectional view taken along the line XX in FIG.
  • FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG.
  • an arm support member 65 protruding toward the rear of the vehicle is attached to the lower region of the rear frame portion 14b of the lower frames 14 on the left and right.
  • a pivot shaft 57 which supports the front portion of the swing arm 20 so as to be pivotable is held.
  • the arm support member 65 which will be described in detail later, is formed in a substantially triangular shape in which one top sandwiched between the two sides protrudes to the vehicle rear side in a side view.
  • the pivot shaft 57 is held in the vicinity of a top projecting to the rear of the vehicle.
  • a battery support stay 66 for supporting the battery storage portion 64 is coupled to a substantially intermediate position in the vertical direction of each rear frame portion 14b on the left and right of the vehicle body frame F. .
  • the battery support stay 66 extends from the rear frame portion 14 b toward the vehicle rear side.
  • a substay 67 extending toward the rear upper side is attached at a position slightly lower than the joint portion of the battery support stay 66 of the left and right rear frame portions 14b.
  • the rear end portion of the sub stay 67 is coupled to the rear area of the battery support stay 66 from below.
  • a first support bracket 68a and a second support bracket 68b made of metal plates are attached to lower regions of the left and right rear frame portions 14b and corresponding left and right sub stays 67, respectively.
  • the first support bracket 68 a is joined to the rear frame portion 14 b and the outer region of the sub stay 67 in the vehicle width direction.
  • the second support bracket 68 b is joined to the rear frame portion 14 b and the vehicle width direction inner region of the sub stay 67.
  • the upper regions of the first support bracket 68a and the second support bracket 68b are separated by a predetermined width, and the bush 69 is disposed in the separated space.
  • the bush 69 has a rubber elastic body (not shown) attached to the inside of the metal cylinder, and a metal shaft 69 a is attached to the axial center of the rubber elastic body.
  • the shaft 69 a penetrates the bush 69 in the axial direction.
  • Left and right end portions of the shaft portion 69a are fastened and fixed to upper regions of the first support bracket 68a and the second support bracket 68b.
  • the outer surface of the bush 69 is connected to an upper support arm 70 which extends obliquely to the rear and obliquely downward.
  • the upper support arm 70 is formed into a distorted substantially U-shaped cross-sectional shape, and is inclined inward in the vehicle width direction toward the rear side of the vehicle body.
  • Upper support arms 70 integrally coupled to the bush 69 are symmetrically provided on both sides in the vehicle width direction of the vehicle.
  • the rear end of the left upper support arm 70 is connected to the left end of the connecting rod 71 extending linearly along the vehicle width direction.
  • the rear end of the right upper support arm 70 is coupled to the right end of the connecting rod 71 extending linearly along the vehicle width direction.
  • the lower region of the first support bracket 68a and the lower region of the second support bracket 68b are joined to each other below the left and right rear frame portions 14b.
  • the joint portion in the lower region is referred to as "a lower joint portion of the support brackets 68a and 68b".
  • Both end portions of a cross frame 51 extending linearly along the vehicle width direction are connected to lower joint portions of the support brackets 68a and 68b on both sides in the vehicle width direction.
  • the cross frame 51 is formed of a round steel pipe having substantially the same diameter as the rear frame portion 14 b.
  • a pair of rearward extension rods 73 extending toward the rear of the vehicle body is coupled to the cross frame 51.
  • the rear extension rods 73 are coupled to two positions spaced to the left and right of the rear side surface of the cross frame 51.
  • a support pipe 74 extending linearly along the vehicle width direction is connected.
  • the pivot shaft 57 is rotatably inserted into the support pipe 74. Both ends of the pivot shaft 57 are supported by the left and right extending pieces 21 b at the front end of the swing arm 20. Therefore, the front end of the swing arm 20 is swingably supported by the support pipe 74.
  • the symbol o1 in the figure is an axis of the pivot shaft 57 along the vehicle width direction.
  • a connecting rod 71 to which rear end portions of the left and right upper support arms 70 are connected is coupled to an intermediate region of the left and right rear extension rods 73 near the rear. Accordingly, the middle region of the left and right rear extension rods 73 is supported by the left and right rear frame portions 14b via a pair of upper support arms 70 that extend obliquely upward toward the front of the vehicle body.
  • the upper support arms 70 on the left and right sides constitute a downward inclined portion that extends obliquely downward and rearward from the rear frame portion 14b.
  • the arm support member 65 in the present embodiment is configured by the cross frame 51, the rear extension rod 73, the support pipe 74, the upper support arm 70, the connection rod 71, and the like described above.
  • the wiring space 75 is a space surrounded by the arm support member 65, the swing arm 20, and the battery storage portion 64.
  • the upper support arm 70 (lower inclined portion) of the arm support member 65 and the upper inclined portion 58 of the front region of the swing arm 20 have a substantially V-shaped side view as shown in FIGS. 8 and 11.
  • the concave portion 76 is formed.
  • the recessed portion 76 constitutes a part of the wiring space 75. At least a portion of the electrical cable 60 is routed in the concave portion 76.
  • the electric cable 60 drawn forward from the connection with the electric motor 30 in the left arm body 21a of the swing arm 20 is, as shown in FIGS. 9 to 11, a car near the upper portion of the left side of the pivot shaft 57. It is bent to the right from the left position in the width direction, and is pulled forward at the right position in the vehicle width direction.
  • the electric cable 60 drawn forward is connected to the power drive unit 63 in the space on the front side of the rear frame portion 14b.
  • the area of the electric cable 60 that bends from the left side to the right side in the vehicle width direction on the front side of the swing arm 20 overlaps at least a part with the axis o1 of the pivot shaft 57 in top view as shown in FIG. As such, it is arranged in the above-mentioned wiring space 75.
  • a part of the electric cable 60 which is bent from the left side to the right side in the vehicle width direction on the front side of the swing arm 20 is supported by the lower end of the battery support frame 110 constituting the battery storage portion 64 There is.
  • a clamp component 130 for holding the electric cable 60 is attached to a portion of the electric cable 60 straddling the lower part of the battery storage portion 64 from the left to the right.
  • the clamp component 130 is fastened and fixed to a cable support bracket 131 (cable support portion) provided at the lower end of the battery support frame 110.
  • FIG. 12 is a view of the battery support frame 110 as viewed from above the left front.
  • battery cases 132F and 132R for detachably accommodating the batteries 62A and 62B are attached.
  • the battery cases 132 ⁇ / b> F and 132 ⁇ / b> R are disposed in the battery support frame 110 side by side in the front-rear direction.
  • Each of the battery cases 132F and 132R has a not-shown battery insertion opening that opens upward.
  • the battery housings in the battery cases 132F and 132R are inclined obliquely downward toward the front.
  • the batteries 62A and 62B are set inside the battery cases 132F and 132R by sliding obliquely into the battery cases 132F and 132R through the battery insertion and removal ports. By inserting and removing the batteries 62A and 62B obliquely into the battery cases 132F and 132R, a part of the weight of the batteries 62A and 62B is supported by the wall portions of the battery cases 132F and 132R.
  • the batteries 62A and 62B set in the battery cases 132F and 132R are fixed to the battery cases 132F and 132R and the battery support frame 110 by the lock mechanism 133 shown in FIG. , 132R to corresponding terminals of the batteries 62A, 62B.
  • the battery support frame 110 supports a first support frame 111 for supporting the front battery case 132F (see FIG. 8) and a second support frame for supporting the rear battery case 132R (see FIG. 8).
  • a support frame 112 and a connecting frame 113 connecting the first support frame 111 and the second support frame 112 are provided.
  • the first support frame 111 includes a pair of left and right side frame portions 115L and 115R which are slightly inclined back and forth along the inclined attitude (see FIG. 8) of the battery case 132F on the front side (see FIG. 8) It has a cross pipe 116 connecting lower ends of the portions 115L and 115R, and a front frame portion 117 whose both sides are connected to lower regions of the left and right side frame portions 115L and 115R.
  • the front frame portion 117 extends in the vehicle width direction in a curved shape that is convex forward.
  • the front frame portion 117 is disposed in the front region of the front battery case 132F.
  • the left and right side frame portions 115L, 115R extend in the longitudinal direction (substantially up and down direction) in a hat shape in cross section opening inward in the vehicle width direction.
  • a mounting bracket 118 for mounting the battery support frame 110 to the vehicle body frame F is provided at the upper end portions of the side frame portions 115L and 115R.
  • the mounting bracket 118 is provided with an internal thread portion 118a in which a bolt can be screwed.
  • the mounting bracket 118 is fastened and fixed to a fixing bracket 105 (see FIG. 8 etc.) provided on the left and right corresponding seat frames 15 in front of the rear frame portion 14 b of the vehicle body frame F.
  • the second support frame 112 includes a pair of left and right side frame portions 121L and 121R which are slightly inclined back and forth along the inclined posture (see FIG. 8) of the battery case 132R on the rear side (see FIG. 8) It has a cross pipe 122 connecting lower ends of the portions 121L and 121R, and a rear frame portion 123 whose both sides are connected to lower regions of the left and right side frame portions 121L and 121R.
  • the rear frame portion 123 extends in the vehicle width direction in a curved shape that is convex rearward.
  • the rear frame portion 123 is disposed in the rear region of the rear battery case 132R.
  • the left and right side frame portions 121L and 121R extend in the longitudinal direction (substantially up and down direction) in a hat shape in cross section opening inward in the vehicle width direction.
  • a mounting bracket 124 for mounting the battery support frame 110 to the vehicle body frame F is provided at the upper end portions of the side frame portions 121L and 121R.
  • the mounting bracket 124 is provided with a female screw portion 124 a in which a bolt can be screwed.
  • the mounting bracket 124 is fastened and fixed to a fixing bracket 107 (see FIG. 8 or the like) provided on the left and right corresponding support frames 17 of the vehicle body frame F.
  • the connection frame 113 includes a connection side frame portion 127L connecting the left side frame portions 115L and 121L of the first support frame 111 and the second support frame 112, and the right side of the first support frame 111 and the second support frame 112. It has a connecting side frame portion 127R connecting the side frame portions 115R and 121R, and a connecting cross frame portion 128 connecting the substantially central portions in the front-rear direction of the left and right connecting side frame portions 127L and 127R. .
  • a front battery case 132F is disposed on the front side of the connecting cross frame portion 128.
  • a battery case 132R on the rear side is disposed on the rear side of the connecting cross frame portion 128.
  • the motorcycle 1 of the present embodiment is provided with the arm support member 65 projecting toward the rear of the vehicle in the lower region of the rear frame portion 14b of the vehicle body frame F.
  • a pivot shaft 57 for swingably supporting a front portion of the swing arm 20 is provided.
  • the wiring space 75 of the electric cable 60 is provided above the area
  • the pivot shaft 57 is received by the arm support member 65 projecting toward the vehicle rear from the lower region of the rear frame portion 14b, and the front portion of the swing arm 20 is the rear frame It is supported by the pivot shaft 57 at a position spaced rearward of the vehicle from the lower region of the portion 14b. Then, the electric cable 60 is routed above the area straddling the arm support member 65 and the front area of the swing arm 20.
  • the electric cable 60 is arranged near the upper portion of the swing center of the swing arm 20, the load acting on the electric cable 60 when the swing arm 20 swings is It can be suppressed as much as possible. Further, in the motorcycle 1 of the present embodiment, since the electric cable 60 is arranged in the wiring space 75 provided above the region straddling the arm support member 65 and the front region of the swing arm 20, the swing When the arm 20 swings, the electrical cable 60 can easily be prevented from interfering with surrounding members.
  • the upper support arm 70 (lower inclined portion) extending obliquely downward and rearward from the rear frame portion 14b is provided on the arm support member 65, and An upper inclined portion 58 extending upward and inclined is provided in the front region of the swing arm 20, and the upper support arm 70 and the upper inclined portion 58 form a concave portion 76 substantially V-shaped in side view .
  • the recessed portion 76 constitutes a part of the wiring space 75, and at least a portion of the electric cable 60 is routed in the recessed portion 76.
  • the pivot shaft 57 is disposed in the vicinity of the bottom of the substantially V-shaped concave portion 76 in a side view, and the electric cable 60 is routed in the vicinity of the pivot shaft 57. Therefore, by adopting the above configuration, the load acting on the electric cable 60 when the swing arm 20 swings can be further suppressed.
  • a part of the electric cable 60 is bent from one side to the other side in the vehicle width direction in the wiring space 75 and wired. It arrange
  • the battery support frame 110 supporting the batteries 62A and 62B above the wiring space 75 is attached to the rear frame portion 14b of the vehicle body frame F.
  • a cable support bracket 131 is attached to the battery support frame 110 to support the flex region of the battery.
  • the wiring space 75 is located below the battery support frame 110, and the electric cable 60 wired in the wiring space 75 is supported by the battery support frame 110 via the cable support bracket 131. Therefore, by adopting the above configuration, the electric cable 60 can be supported on the side of the vehicle body frame F at a position close to the pivot shaft 57, so that the swing of the electric cable 60 accompanying the swing of the swing arm 20 Can be efficiently suppressed.
  • the electric cable 60 includes three-phase electric wires 60u, 60v, 60w connecting the power drive unit 63 and the electric motor 30, and bends when the outer diameter is large and an external force is applied.
  • the electric cable 60 is difficult to be constructed, since the electric cable 60 is disposed close to the pivot shaft 57, it is possible to avoid that a large stress is generated in a part of the electric cable 60 when the swing arm 20 swings.
  • the bundle of three-phase electric wires 60u, 60v, 60w is covered with the protective material 61, and the maximum outer diameter of the protective material 61 is larger than the outer diameter of the pivot shaft 57. Even with such a structure, it is possible to effectively avoid that a large stress is generated in a part of the electric cable 60 when the swing arm 20 swings.
  • the present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention.
  • the electric motor 30 is disposed on the left side of the swing arm 20 in the above embodiment, the electric motor 30 may be disposed on the right side of the swing arm 20.
  • the straddle-type electric vehicle according to the present invention is not limited to a motorcycle, but also includes a front two-wheel and a single rear three-wheel vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
PCT/JP2018/034929 2017-09-29 2018-09-20 鞍乗型電動車両 WO2019065474A1 (ja)

Priority Applications (2)

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JP2019545042A JP6864108B2 (ja) 2017-09-29 2018-09-20 鞍乗型電動車両
CN201880056325.8A CN111051191B (zh) 2017-09-29 2018-09-20 跨骑型电动车辆

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JP2017-191910 2017-09-29
JP2017191910 2017-09-29

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WO2012067110A1 (ja) * 2010-11-18 2012-05-24 本田技研工業株式会社 電動車両の駆動装置
JP2012214149A (ja) * 2011-03-31 2012-11-08 Honda Motor Co Ltd 電動車両
CN104627293A (zh) * 2013-11-15 2015-05-20 雅马哈发动机株式会社 电动摩托车
US20160075397A1 (en) * 2014-09-15 2016-03-17 Gogoro Inc. Multi-link vehicle suspension system

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CN111051191B (zh) 2021-12-14
JPWO2019065474A1 (ja) 2020-07-30
JP6864108B2 (ja) 2021-04-21

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