JP5276944B2 - Straddle-type electric vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a saddle-ride electric vehicle in which a large battery is disposed, and a driving circuit means for driving an electric motor by the power supplied from the battery is disposed while maintaining the excellent appearance. <P>SOLUTION: The battery 30 supplying the electric power to an electric motor 29 is disposed in a space S1 surrounded by a down frame 15 connected to a head pipe 13 or a front end portion of a main frame 14 and extending downwardly, a pivot frame 16 connected to the rear end portion of the main frame 14 and extending downwardly, and the main frame 14. The electric motor 29 is disposed at the position different from the space S1. A driving circuit means 49 for driving the electric motor 29 by the power supplied from the battery 30 is accommodated in a side cover 47 for covering a lower part of an occupant seat 28 provided on a seat rail 18 from its side. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention exhibits a front fork that pivotally supports the front wheel at the lower end and a head pipe that supports the steering handle so that the steering wheel can be steered, a main frame that extends rearwardly downward from the head pipe, and power for rotationally driving the rear wheel. The present invention relates to a straddle-type electric vehicle including an electric motor.

A motorcycle is known from Patent Document 1 in which a battery for supplying electric power to an electric motor is disposed below a main frame extending downward from the head pipe.
JP 2003-182669 A

  However, in the one disclosed in Patent Document 1, the power for rotationally driving the rear wheel between the lower portion of the front bracket suspended from the main frame and the lower portion of the pivot frame extending downward from the rear end of the main frame. A motor unit having an electric motor that exhibits the above is attached, and the battery is disposed in a narrow space between the motor unit and the main frame, so that it is difficult to dispose a large battery.

  The present invention has been made in view of such circumstances, and enables a large-sized battery to be disposed, and a drive circuit means for driving an electric motor by receiving electric power from the battery while maintaining a good appearance. An object is to provide a straddle-type electric vehicle that can be arranged.

In order to achieve the above object, the invention according to claim 1 is directed to a front fork for pivotally supporting a front wheel at a lower end and a head pipe for steering a steering handle so as to be steerable, and a main pipe extending rearwardly downward from the head pipe. A straddle-type electric vehicle including a frame and an electric motor that exerts power for rotationally driving a rear wheel , wherein a main battery that supplies electric power to the electric motor is provided at a front end of the head pipe or the main frame a down frame extending downward is continuously provided, a pivot frame extending downward are provided continuously to the rear end of the main frame, the are arranged in a space surrounded by the main frame Rutotomoni, the electric motor is the space and in shall be placed in different positions, provided on the seat rail extending rearward is provided continuously to the main frame occupant The side in the cover which is located below the seat covering the seat rail from a side, and the sub-battery capable of supplying power to the electric motor in place of the main battery, is supplied from the main battery and the sub-battery and a drive circuit means for driving the electric motor receives electric power, is housed so as to position the said drive circuit means to the side of the sub-battery, said drive circuit means, the rear end portion of the main frame It is provided in the outer side of the rear frame that is continuously provided and extends rearward and supports the seat rail from below, and is disposed above the lower edge of the rear frame in a side view of the vehicle .

According to a second aspect of the invention, in addition to the configuration of the first aspect of the invention, the drive circuit means is accommodated in one side cover of the pair of left and right side covers, and the other of the side covers is the other. Charging circuit means for charging the main battery is accommodated in the side cover.

  The invention according to claim 3 is characterized in that, in addition to the configuration of the invention according to claim 2, the drive circuit means and the charging circuit means are arranged inside in the width direction of the occupant seat in plan view. To do.

  In addition to the configuration of the invention of claim 2 or 3, the drive circuit means or the charging circuit means is provided in a space surrounded by the main frame, the occupant seat, and the rear frame. It is characterized by being arranged.

  The main battery 30 of the embodiment corresponds to the battery of the present invention, and the first space S1 of the embodiment corresponds to the space of the present invention.

According to the first aspect of the present invention, the space surrounded by the main frame, the down frame and the pivot frame is made large by disposing the electric motor at a position different from the space, and the main battery is disposed in the large space. Thus, a larger main battery can be arranged. In addition, the drive circuit means is housed in a side cover that is disposed below the passenger seat and covers the seat rail from the side, thereby improving the appearance by preventing the drive rotation means from being seen outward. it can.

  According to the second aspect of the present invention, the drive circuit means is accommodated in one of the left and right side covers, and the charging circuit means is accommodated in the side cover on the other side. By effectively utilizing the space in the cover, the drive circuit means and the charging circuit means can be arranged while obtaining a good appearance.

  According to the third aspect of the present invention, the drive circuit means and the charging circuit means are disposed on the inner side in the width direction of the occupant seat in plan view, so that the drive circuit means does not hit the occupant's feet straddling the occupant seat. Further, the charging circuit means can be disposed, and the driving circuit means and the charging circuit means can be protected by the passenger seat.

  According to the fourth aspect of the invention, the drive circuit means and the charging circuit means can be protected by being surrounded by the main frame, the occupant seat and the rear frame.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

  1 to 5 show a first embodiment of the present invention. FIG. 1 is a left side view of a motorcycle, FIG. 2 is a view taken in the direction of the arrow 2 in FIG. 1, and FIG. 4 is a left side view of the motorcycle, FIG. 4 is a view taken in the direction of the arrow 4 in FIG. 3, and FIG.

  1 to 4, a body frame FA of a motorcycle, which is a saddle-type electric vehicle, includes a front fork 11 that pivotally supports a front wheel WF at a lower end and a bar-like operation connected to an upper portion of the front fork 11. A head pipe 13 that supports the steering handle 12 so as to be steerable, a pipe-shaped main frame 14 that extends rearwardly downward from the head pipe 13, and a pivot frame that is connected to the rear end of the main frame 14 and extends downward. 16 and a pair of left and right rear frames 17 connected to the rear end portion of the main frame 14 and extending rearward, and the rear portion of the main frame 14 and an intermediate portion between the rear frames 17. And a pair of inclined left and right seat rails 18.

  The rear frames 17 are integrally formed with an inclined portion 17a extending rearward from the rear end of the main frame 14 and a horizontal portion 17b extending horizontally rearward from the rear end of the inclined portion 17a. And the rear portions of both horizontal portions 17b are connected to each other. The rear ends of the seat rails 18 are connected to the rear upper portions of the inclined portions 17a of the rear frames 17.

  A front fender 20 that covers the front wheel WF from above is attached to the front fork 11, and a rear fender 21 that covers the rear wheel WR from above is attached to the rear frame 17. A main stand 22 is rotatably attached to the lower part of the pivot frame 16. Moreover, a front end portion of a swing arm 23 that pivotally supports the rear wheel WR is connected to the pivot frame 16 so as to be able to swing up and down, and the front portion of the horizontal portion 17b in the rear frame 17 Rear cushion units 24 are provided between the rear portions of the swing arm 23. Further, a loading platform 25 is provided on the horizontal portions 17b of the rear frames 17.

  An occupant seat 28 is disposed in front of the loading platform 25, and the occupant seat 28 is supported by the seat rails 18 through a seat support frame 19, and as shown in FIG. The seat 28 is supported by the seat support frame 19 so that it can be rotated forward. Thus, the seat support frame 19 includes a horizontal seat support portion 19a that supports the occupant seat 28, a front leg portion 19b that extends downward from the front portion of the seat support portion 19a, and a lower portion from the rear portion of the seat support portion 19a. A lower leg of the front leg 19b is fixed to the front part of the seat rail 18, and the lower end of the rear leg 19c is at the rear part of the inclined part 17a of the rear frame 17. It is fixed.

  By the way, the rear wheel WR is rotationally driven by the power exerted by the electric motor 29, and the main battery 30 for supplying electric power to the electric motor 29 is used for the main frame 14 and a part of the vehicle body frame FA. A first frame surrounded by a pivot frame 16 and a down frame 15 which is configured to be connected to the front end of the head pipe 13 or the main frame 14 (in this embodiment, the front end of the main frame 14) and extends downward. In the space S1 (see FIGS. 1 and 3). On the other hand, the electric motor 29 is arranged at a position different from the first space S1, and in this embodiment, the electric motor 29 has the rotation axis coaxial with the rear wheel WR and the swing arm 23. It is arrange | positioned at the rear-end part.

  The main battery 30 is configured by coupling a plurality of main battery cells 31 to each other, and each main battery cell 31 is an upper surface substantially along the main frame 14 in the vehicle body frame FA. In the main battery box 32 disposed in the first space S1 surrounded by the main frame 14, the down frame 15 and the pivot frame 16, and arranged in alignment with the shape of the main battery box 32.

  Thus, the upper surface of the main battery box 32 is formed along the lower surface of the main frame 14 that extends rearwardly downward. In this embodiment, the upper surface of the main battery box 32 is formed so as to be gradually lowered toward the rear. The

  In addition, it is possible to connect the down frame 15 and the pivot frame 16 between the lower frame 15 and the lower part of the pivot frame 16 to support the main battery box 32, and to release the main battery box 32 by releasing the connection. In this embodiment, the rear part of the lower frame 33 can swing through the support shaft 34 at the lower part of the pivot frame 16. The front part of the lower frame 33 is detachably connected to the lower part of the down frame 15 by a detachable connection pin 35 or the like. That is, the lower frame 33 can be switched between a connected state in which the front part is connected to the down frame 15 and a disconnected state in which the front part is removed from the down frame 15. In the released state, the lower frame 33 is switched as shown in FIG. The main battery box 32 can be taken out downward by rotating the frame 33 so that the front portion thereof is at the lower position.

  In addition, elastic members 36 are interposed between the upper surface of the main battery box 32 supported by the coupled lower frame 33 and the vehicle body frame FA.

  A pair of left and right step frames 37, 37 extending forward from the pivot frame 16 are connected to the lower portion of the pivot frame 16, and a passenger seat 28 is provided at the front end of the step frames 37. Steps 38 and 38 are provided for the seated occupant to put their feet on.

  Thus, the main battery box 32 for storing the main battery 30 does not overlap the step frames 37 and 38 in a plan view as shown in FIGS. 2 and 4, and in this embodiment, Corresponding to the step frames 37... And the steps 38... Arranged on both sides of the rear part of the main battery box 32, the width of the main battery box 32, that is, the rear part of the main battery 30 is the width of the front part of the main battery box 32. Is set smaller. Moreover, in order to increase the capacity of the main battery 30, the main battery box 32 is formed to extend rearward so that the rear end portion thereof overlaps the step frame 37 in a side view.

  Further, electric power is supplied to the electric motor 29 in place of the main battery 30 in a second space S2 surrounded by the main frame 14 and the seat rails 18 and positioned below the passenger seat 28. As shown in FIG. 5, the sub battery 40 to be obtained is arranged so that the passenger seat 28 can be detached from the second space S <b> 2 while being rotated forward, and the sub battery 40 is surrounded by the seat support frame 19. It is. Thus, since the electric motor 29 is disposed at the rear end portion of the swing arm 23 while avoiding the first space S1, the electric motor 29 is disposed while avoiding the second space S2.

  The sub-battery 40 is configured by connecting a plurality of sub-battery cells 41 to each other, and the sub-battery cells 41 are formed in accordance with the second space S2 to be second. The sub-battery box 42 arranged in the space S2 is aligned and arranged in accordance with the shape of the sub-battery box 42.

  The seat rail 18 in the vehicle body frame FA is supported by a cooling fan 43 that sucks the air heated by the main battery 30 to the rear side of the first space S1 and discharges it to the rear of the passenger seat 28. The main battery box 32 disposed in the first space S1 is formed such that traveling wind from the front of the motorcycle can be introduced from the front part and discharged from the rear upper part.

  The rear leg portion 19c of the seat support frame 19 in the vehicle body frame FA sucks air warmed by the sub-battery box 42 disposed in the second space S2 from the second space S2, and the passenger seat A second cooling fan 44 that is discharged to the rear of 28 is supported.

  By the way, the left and right legs of the occupant sitting on the occupant seat 28 are covered from the front by leg shields 45, respectively. These leg shields 45 cover the main frame 14 from above and the main battery. A synthetic resin center cover 46 is integrally provided to cover the front portion of the box 32 from both sides. On the other hand, the seat rails 18, the seat support frame 19, the sub-battery box 42, and the second cooling fan 44 are arranged on both sides with a pair of left and right side covers 47 that are disposed below the passenger seat 28. Side covers 47 made of synthetic resin are connected to the center cover 46 and constitute a vehicle body cover 48 together with the center cover 46.

  Moreover, a drive circuit means 49 that receives the power supplied from the main battery 30 and the sub-battery 40 and drives the electric motor 29 is housed in one of the side covers 47, and the other of the side covers 47. A charging circuit means 50 for charging the main battery 30 is accommodated therein. A charging cord 51 is accommodated between the passenger seat 28 and the sub battery box 42.

  The driving circuit means 49 and the charging circuit means 50 are arranged on the inner side in the width direction of the occupant seat 28 in a plan view, and are arranged in a space surrounded by the main frame 14, the occupant seat 28, and the rear frame 17. .

  Next, the operation of the first embodiment will be described. A main battery 30 for supplying electric power to an electric motor 29 that exerts power for rotationally driving the rear wheels WR is connected to the front end portion of the main frame 14 and is disposed below. The electric motor 29 is disposed in the first space S1 that is disposed in the first space S1 that is surrounded by the extending down frame 15, the pivot frame 16 that is connected to the rear end portion of the main frame 14 and extends downward, and the main frame 14. Since the first space S1 is a large space and the main battery 30 is disposed in the large first space S1, the large main battery 30 can be disposed.

  The pivot frame 16 is connected to the rear end of a swing arm 23 that pivotally supports the rear wheel WR. The electric motor 29 has a rotation axis coaxial with the rear wheel WR. Since it is disposed at the rear end portion of the swing arm 23, the electric motor 29 can be disposed in a compact manner while ensuring the space for disposing the main battery 30.

  Further, a connection state in which the down frame 15 and the pivot frame 16 are connected between the lower frame 15 and the lower part of the pivot frame 16 to support the main battery box 32, and the connection is released and the main battery box 32 can be taken out downward. Since the lower frame 33 that can be switched between the connection release state and the lower release state is provided, the main battery box 32 can be taken out downward in the connection release state of the lower frame 33, and maintenance work of the main battery 30 can be performed. It becomes easy.

  Further, while the main battery 30 is disposed in the first space S1, a sub battery 40 that can supply power to the electric motor 29 instead of the main battery 30 is connected to the rear end portion of the main frame 14. The rear frame 17 that is provided and extends rearward, the seat rail 18 that connects the rear part of the main frame 14 and the middle part of the rear frame 17 and supports the passenger seat 28, and the main frame 14. Since the electric motor 29 is arranged in the enclosed second space S2 and not in the second space S2, the main space is formed in the first and second spaces S1 and S2 which can be largely formed by not arranging the electric motor 29. By disposing the battery 30 and the sub battery 40, the larger main battery 30 and the sub battery 40 are disposed. It can be, when the main battery 30 has become empty can supply electric power to the electric motor 29 from the sub-battery 40 instead of the main battery 30.

  Further, the main battery 30 is configured by connecting a plurality of main battery cells 31 to each other, and the main battery cells 31 have an upper surface substantially along the lower surface of the main frame 14. In the main battery box 32 disposed in the first space S1 surrounded by the main frame 14, the down frame 15 and the pivot frame 16, the sub battery 40 is aligned and arranged in accordance with the shape of the main battery box 32. Is formed by coupling a plurality of sub-battery cells 41 to each other, and the sub-battery cells 41 are formed in accordance with the second space S2 and arranged in the second space S2. Since the battery box 42 is aligned and arranged in accordance with the shape of the sub battery box 42, the main battery box The box 32 can accommodate a number of cells 31 ... for the main battery can be housed many cells 41 ... a sub battery by the sub-battery box 42.

  Further, a side cover 47 that covers the seat rails 18 from the side is disposed below the occupant seat 28 provided on the seat rails 18 and receives electric power supplied from the main battery 30 or the sub-battery 40. Since the drive circuit means 49 for driving the electric motor 29 is accommodated in the side cover 49, the appearance can be improved by preventing the drive rotation means 49 from being seen outward.

  In addition, a pair of left and right side covers 47 are disposed on the left and right sides of the seat rail 18, the drive circuit means 49 is accommodated in one of the side covers 47, and the other of the side covers 47. Since the charging circuit means 50 for charging the main battery 30 is accommodated, the drive circuit can be obtained while obtaining a good appearance by effectively using the space in the both side covers 47 while making the right and left weight balance good. Means 49 and charging circuit means 50 may be arranged.

  Further, since the driving circuit means 49 and the charging circuit means 50 are disposed in the width direction inside of the occupant seat 28 in a plan view, the driving circuit means 49 and the charging are not applied to the occupant's feet straddling the occupant seat 28. The circuit means 50 can be disposed, the driving circuit means 49 and the charging circuit means 50 can be protected by the occupant seat 28, and the space surrounded by the main frame 14, the occupant seat 28, and the rear frame 17. Since the drive circuit means 49 and the charging circuit means 50 are arranged, the drive circuit means 49 and the charging circuit means 50 can be protected by being surrounded by the main frame 14, the passenger seat 28, the rear frame 17,.

  Further, a cooling fan 43 that sucks the air heated by the main battery 30 to the rear side of the first space S1 and discharges it to the rear of the occupant seat 28 is supported by the seat rails 18 in the vehicle body frame FA. The main battery box 32 disposed in the first space S1 is formed so that the traveling wind from the front of the motorcycle can be introduced from the front and discharged from the upper rear side. The heat generated at 30 can be discharged to the rear of the passenger seat 28.

  In addition, the main battery box 32 is formed such that traveling wind from the front of the motorcycle can be introduced from the front part and discharged from the rear upper part, and the main battery 30 is accommodated in the main battery box 32. Therefore, the air in the main battery box 32 can be effectively discharged by the operation of the cooling fan 43, and the main battery 30 in the main battery box 32 can be effectively cooled.

  A sub-battery 40 that can supply electric power to the electric motor 29 instead of the main battery 30 is disposed in the second space S2 surrounded by the rear frame 17..., The seat rail 18. Since the second cooling fan 44 that sucks the warmed air from the second space S2 and discharges it to the rear of the occupant seat 28 is supported by the rear leg portion 19c of the seat support frame 19 in the vehicle body frame FA. The heat generated in the sub-battery 40 can be discharged to the rear of the passenger seat 28.

  Further, the main battery 30 and the main battery box 32 are arranged in the first space S1 so as not to overlap with both the step frames 37... And the steps 38 provided at the front ends of the step frames 37. Therefore, it is possible to improve the footrest of the occupant while avoiding an increase in the width between the step frames 37. Further, the width of the main battery 30 must be narrowed at the portion where the occupant straddles the occupant seat 28 due to the arrangement of both the step frames 37... And both the steps 38. By increasing the width of the main battery 30 at the portion disposed in front of both steps 38..., The capacity of the main battery box 32 is increased as much as possible while improving the occupant's footrest. The main battery 30 can be enlarged by accommodating the main battery cells 31.

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

1 is a left side view of a motorcycle. FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1. Fig. 3 is a left side view of the motorcycle with a vehicle body cover removed. FIG. 4 is a view taken in the direction of arrow 4 in FIG. 3. It is a figure for demonstrating attachment / detachment operation of a battery.

DESCRIPTION OF SYMBOLS 11 ... Front fork 12 ... Steering handle 13 ... Head pipe 14 ... Main frame 15 ... Down frame 16 ... Pivot frame
17 ... rear frame 18 ... seat rails 23 ... swing arm 29 ... electric motor 30 ... main battery
40 ... Sub-battery 47 ... Side cover 49 ... Drive circuit means 50 ... Charging circuit means S1 ... First space WF that is a space ... Front wheel WR ... Rear wheel

Claims (4)

A front fork (11) that pivotally supports the front wheel (WF) at its lower end and a head pipe (13) that supports the steering handle (12) so as to be steerable, and a main frame that extends rearwardly downward from the head pipe (13) (14) and a straddle-type electric vehicle comprising an electric motor (29) that exerts power for rotationally driving a rear wheel (WR) ,
A main battery (30) for supplying electric power to the electric motor (29), a down frame (15) extending downwardly connected to a front end of the head pipe (13) or the main frame (14); a pivot frame (16) extending downward is provided continuously to the rear end of the main frame (14), is arranged in a space (S1) that is surrounded by the said main frame (14) Rutotomoni, the electric motor (29) in There shall be arranged in a different position the space (S1),
A side cover (47) which is arranged below a passenger seat (28) provided on a seat rail (18) which is provided continuously with the main frame (14) and extends rearward and covers the seat rail (18) from the side. ), A sub battery (40) capable of supplying electric power to the electric motor (29) instead of the main battery (30), and electric power supplied from the main battery (30) and the sub battery (40). a drive circuit unit, wherein for driving the electric motor (29) receiving (49) but is accommodated so as to position the said drive circuit means (49) on the side of the sub-battery (40),
The drive circuit means (49) is provided on the outer side of the rear frame (17) that is connected to the rear end of the main frame (14) and extends rearward and supports the seat rail (18) from below. A straddle-type electric vehicle characterized by being disposed above the lower edge of the rear frame (17) in a side view of the vehicle. The drive circuit means (49) is accommodated in one side cover (47) of the pair of left and right side covers (47), and the other side cover (47) of both side covers (47) The straddle-type electric vehicle according to claim 1, wherein charging circuit means (50) for charging the main battery (30) is accommodated.   The straddle-type electric vehicle according to claim 2, wherein the driving circuit means (49) and the charging circuit means (50) are arranged on the inner side in the width direction of the occupant seat (28) in a plan view. .   The drive circuit means (49) and the charging circuit means (50) are arranged in a space surrounded by the main frame (14), the occupant seat (28) and the rear frame (17). The straddle-type electric vehicle according to claim 2 or 3.

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