CN216546517U

CN216546517U - Saddle-ride type electric vehicle

Info

Publication number: CN216546517U
Application number: CN202121666962.2U
Authority: CN
Inventors: 藤田雄三; 堤阳平; 楠田笃志
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2020-08-21
Filing date: 2021-07-21
Publication date: 2022-05-17
Anticipated expiration: 2031-07-21
Also published as: JP2022035869A; JP7129450B2

Abstract

The utility model provides a saddle-ride type electric vehicle capable of effectively cooling a motor without using a cooling fan. A saddle-ride type electric vehicle (1) in which a rear Wheel (WR) is driven by a motor (M) supplied with electric power from a battery (B) is provided with: a swing arm (14) that supports the motor (M); a duct (50) that guides traveling wind to the motor (M); the tube (50) is provided with a suction port (51) at the front end and a discharge port (52) at the rear end, which are arranged along the front-rear direction. The discharge port (52) opens toward the motor (M), and an inclined portion (53) that is inclined from the outside in the vehicle width direction toward the motor (M) is provided on the vehicle width direction outer side surface of the pipe (50).

Description

Saddle-ride type electric vehicle

Technical Field

The present invention relates to a saddle-ride type electric vehicle, and more particularly, to a saddle-ride type electric vehicle in which a rear wheel is driven by a motor supplied with electric power from a battery.

Background

Conventionally, in a saddle-ride type electric vehicle in which a rear wheel is driven by a motor, a structure is known in which the motor is actively cooled using a flow of air.

Patent document 1 discloses a saddle-ride type electric vehicle in which a flow of air generated by a cooling fan provided in a vehicle body is guided to a motor through an air guide duct.

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. 6-247374

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by the utility model

However, the structure described in patent document 1 has a technical problem that the production cost increases because a cooling fan needs to be provided, and therefore, development of a structure capable of efficiently feeding wind to the motor without using the cooling fan is required.

An object of the present invention is to solve the above-described problems of the prior art and to provide a saddle-ride type electric vehicle capable of efficiently cooling a motor without using a cooling fan.

Technical solution for solving technical problem

In order to achieve the above object, the present invention has the following first feature: a saddle-ride type electric vehicle (1) in which a rear Wheel (WR) is driven by a motor (M) supplied with electric power from a battery (B) is provided with: a swing arm (14) supporting the motor (M); a duct (50) that guides traveling wind to the motor (M); the duct (50) is provided with a suction port (51) at a front end portion and a discharge port (52) at a rear end portion, which are arranged along a front-rear direction, the discharge port (52) being open to the motor (M), and an inclined portion (53) that is inclined from the outside in the vehicle width direction toward the motor (M) is provided on the vehicle width direction outer side surface of the duct (50).

In addition, the second feature is: the vehicle body structure is provided with a side cover (12) covering the side part of the vehicle body, and the outermost position (a) of the pipe (50) is positioned more inward in the vehicle width direction than the outermost position (b) of the side cover (12) when viewed from the front of the vehicle body.

In addition, the third feature is: a constricted portion (12a) that constricts inward in the vehicle width direction is formed at the rear end portion of the side cover (12), and the suction port (51) of the tube (50) is disposed at a position facing the constricted portion (12 a).

In addition, the fourth feature is: the suction port (51) of the tube (50) is disposed in proximity to the constricted portion (12a) so as to face the constricted portion.

In addition, the fifth feature is: possess and cover rear fender (15) of at least some of motor (M) and rear Wheel (WR) rear fender (15)'s side is provided with makes when observing from the automobile body side breach portion (34) that a part of motor (M) exposes, shrink portion (12a) upwards extends to be provided with the position more than the height of breach portion (34).

Moreover, the sixth feature is: a step part (11) for putting a driver's foot on is arranged at the front upper part of the pipe (50), a lower cover (40) for covering the lower part of the vehicle body is arranged below the step part (11), a upturned part (41) inclined towards the upper part is formed at the rear end of the lower cover (40), and the outermost position (C) of the upturned part (41) in the vehicle width direction is arranged at the inner side of the outermost position (D) of the pipe (50) in the vehicle width direction.

Moreover, the seventh feature is: the traveling wind discharged from the discharge port (52) abuts on a substantially central portion of the motor (M), and the traveling wind guided by the raised portion (41) abuts on a portion of the motor (M) near the front.

Effect of the utility model

According to a first aspect, a saddle-ride type electric vehicle (1) in which a rear Wheel (WR) is driven by a motor (M) supplied with electric power from a battery (B) includes: a swing arm (14) that supports the motor (M); a duct (50) that guides traveling wind to the motor (M); the duct (50) is provided with a suction port (51) at the front end and a discharge port (52) at the rear end, the suction port (52) being arranged along the front-rear direction, the discharge port (52) being open to the motor (M), and an inclined portion (53) inclined from the outside in the vehicle width direction to the motor (M) being provided on the vehicle width direction outer side surface of the duct (50), so that not only the traveling wind flowing inside the duct but also the traveling wind flowing along the vehicle width direction outer side surface of the duct can be guided to the motor. This makes it possible to efficiently blow the traveling wind to the motor M without providing a cooling fan, thereby improving the cooling performance.

According to the second feature, since the vehicle body has the side cover (12) covering the side portion of the vehicle body and the outermost position (a) of the pipe (50) is located further inward in the vehicle width direction than the outermost position (b) of the side cover (12) when viewed from the front of the vehicle body, the pipe can be laid without increasing the front projection area, and the cooling performance can be improved while preventing an increase in the running resistance.

According to the third feature, since the rear end portion of the side cover (12) is formed with the constricted portion (12a) constricted inward in the vehicle width direction, and the suction port (51) of the duct (50) is disposed at a position facing the constricted portion (12a), the constricted portion can efficiently guide the traveling wind flowing along the side cover to the suction port of the duct.

According to the fourth feature, since the suction port (51) of the duct (50) is disposed in proximity to the constricted portion (12a) so as to face it, the traveling wind flowing along the side cover (12) can be more positively introduced into the suction port of the duct.

According to the fifth feature, the rear fender (15) is provided so as to cover at least a part of the motor (M) and the rear Wheel (WR), a notch portion (34) for exposing a part of the motor (M) when the rear fender (15) is viewed from the side of the vehicle body is provided on the side of the rear fender, and the constricted portion (12a) extends upward to a position above the height of the notch portion (34), so that the constricted portion provided at the rear end of the side cover enables the traveling wind to efficiently enter the notch portion provided on the rear fender, thereby improving the cooling performance.

According to the sixth aspect, since the foothold (11) for putting a driver's foot on is provided above and in front of the pipe (50), the under cover (40) for covering the lower part of the vehicle body is disposed below the foothold (11), the raised part (41) inclined upward is formed at the rear end of the under cover (40), and the vehicle width direction outermost position (C) of the raised part (41) is disposed inward of the vehicle width direction inner outermost position (D) of the pipe (50), the upward-directed traveling wind can be blown to the motor along the pipe by disposing the raised part of the under cover between the left and right pipes, and the cooling performance can be improved.

According to the seventh feature, since the traveling wind discharged from the discharge port (52) abuts on the substantially central portion of the motor (M) and the traveling wind guided by the raised portion (41) abuts on the portion of the motor (M) near the front, the cooling performance can be improved by blowing the first traveling wind (W1) discharged from the discharge port (52), the second traveling wind (W2) passing through the outside of the pipe (50) by the inclined portion (53), and the third traveling wind (W3) guided by the raised portion (41) to the entire motor (M).

Drawings

Fig. 1 is a left side view of an electric motorcycle according to an embodiment of the present invention.

Fig. 2 is a right side view of the electric motorcycle.

Fig. 3 is a front view of the electric motorcycle.

Fig. 4 is an enlarged rear view of a part of the electric motorcycle.

Fig. 5 is an enlarged left side view of a part of the electric motorcycle.

Fig. 6 is a right side view of a part of the electric motorcycle enlarged.

Fig. 7 is a perspective view of the electric motorcycle as viewed from the front on the right side. Fig. 8 is a perspective view of the electric motorcycle as viewed from the upper right side. Fig. 9 is a perspective view of the electric motorcycle viewed from obliquely below.

Fig. 10 is a bottom view of the electric motorcycle.

Fig. 11 is a cross-sectional view taken along line XI-XI of fig. 6.

Fig. 12 is a sectional view taken along line XII-XII of fig. 2.

Fig. 13 is a cross-sectional view taken along line XIII-XIII of fig. 6.

Fig. 14 is a cross-sectional view taken along line XIV-XIV of fig. 10.

Description of the reference numerals

1: electric motorcycles (saddle-ride type electric vehicles);

11: a low floor (foot rest);

12: a side cover;

12 a: a constriction;

14: swinging arms;

15: a rear fender;

34: a notch portion;

40: a lower cover;

41: a raised part;

50: a tube;

51: a suction inlet;

52: an outlet port;

53: an inclined portion;

a: the outermost position of the tube;

b: an outermost position of the side cover;

c: the outermost position of the upwarp part in the vehicle width direction;

d: an outermost position in a vehicle-widthwise inner side of the pipe;

b: a battery;

m: a motor;

WR: a rear wheel.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a left side view of an electric motorcycle 1 according to an embodiment of the present invention. Fig. 2 is a right side view of the electric motorcycle 1. The electric motorcycle 1 is a scooter-type electric vehicle having a hub (In-wheel) type motor M incorporated In a rear wheel WR as a power source. A head pipe F2 that rotatably and axially supports a steering column F1 is provided at the front end of the vehicle body frame F. The main frame F3 extends rearward and downward from the head pipe F2, the lower frame F4 extends rearward from the lower end of the main frame F3, and the rear frame F5 extends rearward and upward from the rear end of the lower frame F4.

A steering handle 3 is fixed to an upper portion of the steering column F1, and a bottom bridge 7 is fixed to a lower portion of the steering column F1. A pair of left and right front forks 9 for supporting the front wheel WF are fixed to the bottom axle 7. A front fender 8 covering the upper portion of the front wheel WF is fixed to the front fork 9. A swing arm 14 that pivotally supports the rear wheel WR is pivotally supported by the pivot shaft 13 so as to be swingable with respect to the vehicle body frame F. The front upper portion of the swing arm 14 is connected to the vehicle body frame F by a rear cushion 20. The upper part of the rear wheel WR is covered by a rear fender 15 fixed to the swing arm 14.

A pair of left and right rearview mirrors 2 are attached to a handlebar cover 4 that covers the center of a steering handlebar 3 in the vehicle width direction. The front of the head pipe F2 is covered by a front cover 5 having headlights 6, and the rear of the head pipe F2 is covered by a leg shield 10 facing the feet of the driver. A pair of left and right side covers 12 connected to the front cover 5 are connected to left and right ends in the vehicle width direction of the low floor 11 as a step portion, and extend to positions covering the pivot shafts 13 on rear sides thereof. A battery B for supplying electric power to the motor M is disposed below the lower plate 11.

A seat lower cover 19 is disposed below the seat 18, and a rear cover 17 is connected to a rear portion of the seat lower cover 19. A tail lamp device 16 is mounted to a rear end of the rear cover 17. A pair of left and right pipes 50(50L, 50R) for introducing traveling wind for cooling the motor M are disposed at a lower portion of the swing arm 14.

Fig. 3 is a front view of the electric motorcycle 1. Fig. 4 is an enlarged rear view of a part of the electric motorcycle 1. The duct 50 (a dotted-hatched portion in the figure) is a tubular member having a substantially square cross section made of synthetic resin or the like, and a suction port through which traveling wind is introduced is provided on the front side. A brake drum 23 having a smaller diameter than the motor M is disposed on the left side of the motor M in the vehicle width direction. The outlet of the duct 50 opens to the motor M, and the traveling wind is blown out from the left and right in the vehicle width direction to cool the motor M.

The left and

right pipes

50L, 50R are disposed rearward and downward along the swing arm 14, and a discharge port is provided below the rear wheel axle 22. An inclined portion 53 inclined from the outside in the vehicle width direction toward the motor M is provided on the vehicle width direction outer side surface of the pipe 50. This allows the traveling wind flowing through the inside of the pipe 50 to be guided not only to the motor M but also to the outside surface of the pipe 50 in the vehicle width direction.

The outermost position a of the tube 50 is located further inward in the vehicle width direction than the outermost position b of the side cover 12 when viewed from the front of the vehicle body. This enables the tubes 50 to be arranged without increasing the front projection area, thereby improving the cooling performance while preventing an increase in the running resistance.

The rear fender 15 covering the upper part of the rear wheel WR is an integrally molded member made of synthetic resin or the like. The license plate lamp 30, the reflector 31, and the license plate mounting portion 32 are provided at the rear end portion of the mud removing member 33. A rear cover 21 connected to the rear cover 17 is disposed forward of the rear fender 15 and below the tail lamp device 16.

Fig. 5 is an enlarged left side view of a part of the electric motorcycle 1. Fig. 6 is an enlarged right side view of a part of the electric motorcycle 1. A brake arm 25 and a brake cable 24 are attached to the brake drum 23 provided on the left side of the motor M in the vehicle width direction. The rear fender 15 is a cantilever type fixed to the swing arm 14 by a support portion 36 on the right side in the vehicle width direction. The support portion 36 is fixed to the swing arm 14 by two fastening members 35. A notch 34 for introducing traveling wind to the motor M is provided in front of the support 36. Further, a constricted portion 12a that constricts inward in the vehicle width direction is formed at the rear end portion of the side cover 12.

Fig. 7 is a perspective view of the electric motorcycle 1 as viewed from the front on the right side. Fig. 8 is a perspective view of the electric motorcycle 1 as viewed from the upper right side. The contraction portion 12a provided at the rear end portion of the side cover 12 is shaped to contract the rear end edge of the side cover 12 inward in the vehicle width direction. By disposing the suction port 51 of the duct 50 close to the constricted portion 12a, the traveling wind flowing along the side cover 12 can be positively introduced into the suction port 51 of the duct 50. The constricted portion 12a extends upward to a position of the rear fender 15 that is at least as high as the height at which the cutout portion 34 is provided. This allows the traveling air to efficiently enter notch portion 34, thereby improving the cooling performance.

Further, as described above, by providing the inclined portion 53 inclined from the outside in the vehicle width direction to the motor M on the outer side surface in the vehicle width direction of the pipe 50, not only the traveling wind flowing inside the pipe 50 but also the traveling wind flowing along the outer side surface in the vehicle width direction of the pipe 50 can be guided to the motor M. This makes it possible to efficiently blow the traveling wind to the motor M without providing a cooling fan, thereby improving the cooling performance.

Fig. 9 is a perspective view of the electric motorcycle 1 as viewed obliquely from below. Fig. 10 is a bottom view of the electric motorcycle 1. A undercover 40 covering the underbody is disposed below the floor panel 11. A raised portion 41 inclined upward is formed at the rear end of the lower cover 40 formed of a plate-like member. The vehicle-widthwise outermost position c of the raised portion 41 is located inward of the vehicle-widthwise inner outermost position d of the pipe 50. Thus, by disposing the raised portion 41 of the lower cover 40 between the left and

right pipes

50L, 50R, the traveling wind guided upward by the raised portion 41 can be blown to the motor along the pipe 50, and the cooling performance can be improved.

Fig. 11 is a cross-sectional view taken along line XI-XI of fig. 6. The left tube 50L and the right tube 50R are substantially bilaterally symmetrical. The tube 50 has the following construction: the intake port 51 is disposed near the constricted portion 12a to efficiently introduce the traveling wind, and then the traveling wind is guided rearward while the vehicle width direction interval is narrowed, and the traveling wind is blown toward the motor M from the discharge port that is opened inward in the vehicle width direction at a position below the axle 22.

Fig. 12 is a sectional view taken along line XII-XII of fig. 2. In the present embodiment, the motor M is configured to be cooled by generating three flows of traveling wind by the duct 50. First, the first traveling wind W1 introduced from the suction port 51 and flowing inside the pipe 50 is discharged from the discharge port 52 to be in contact with a substantially central portion of the motor M. Then, by providing the inclined portion 53 on the vehicle width direction outer side surface of the duct 50, the portion of the motor M near the rear can be cooled by the second traveling wind W2 passing through the outside of the duct 50. Next, the third traveling wind W3 guided by the raised portion 41 of the lower cover 40 cools the portion of the motor M near the front through the inside of the duct 50. This can blow the traveling wind W1, W2, and W3 to the entire motor M, thereby improving the cooling effect.

Fig. 13 is a cross-sectional view along line XIII-XIII of fig. 6. The constricted portion 12a provided at the rear end portion of the side cover 12 can guide the traveling wind W flowing along the side cover 12 so as to curve inward in the vehicle width direction. This enables the traveling wind to be effectively guided to the suction port 51 of the duct 50 and the cutout portion 34 provided in the rear fender 15.

Fig. 14 is a cross-sectional view taken along line XIV-XIV of fig. 10. The rear cushion 20 is disposed behind the lower plate 11 and below the storage box 29. As described above, the raised portion 41 for guiding the traveling wind W upward of the vehicle body is formed at the rear end portion of the under cover 40 covering the lower side of the battery B. The rising portion 41 can guide traveling wind between the left and right pipes 50, thereby cooling the position of the motor M near the front.

The form of the motorcycle, the shape and structure of the swing arm, the shape and structure of the pipe, the shape of the side cover and the lower cover, and the like are not limited to the above embodiments, and various modifications are possible. For example, the pipe may be attached to the vehicle body side in addition to the swing arm. Further, the swing arm may be provided integrally with the vehicle body. The motor cooling structure of the present invention is not limited to the electric two-wheeled vehicle, and can be applied to a saddle-ride type three-wheeled vehicle, four-wheeled vehicle, and the like.

Claims

1. A saddle-ride type electric vehicle, wherein a rear Wheel (WR) is driven by a motor (M) supplied with electric power from a battery (B), the saddle-ride type electric vehicle being characterized by comprising:

a swing arm (14) that supports the motor (M);

a duct (50) that guides traveling wind to the motor (M);

the pipe (50) is provided with a suction port (51) at the front end and a discharge port (52) at the rear end, which are arranged along the front-rear direction;

the discharge port (52) is opened toward the motor (M),

an inclined portion (53) that is inclined from the outside in the vehicle width direction toward the motor (M) is provided on the outer side surface in the vehicle width direction of the pipe (50).

2. The saddle-ride type electric vehicle according to claim 1,

has a side cover (12) covering the side part of the vehicle body,

the outermost position (a) of the tube (50) is located further inward in the vehicle width direction than the outermost position (b) of the side cover (12) when viewed from the front of the vehicle body.

3. The saddle-ride type electric vehicle according to claim 2,

a contraction part (12a) which contracts towards the inner side of the vehicle width direction is formed at the rear end part of the side cover (12),

the suction port (51) of the tube (50) is disposed at a position facing the constricted portion (12 a).

4. The saddle-ride type electric vehicle according to claim 3,

the suction port (51) of the tube (50) is disposed in proximity to the constricted portion (12a) so as to face the constricted portion.

5. The saddle-ride type electric vehicle according to claim 3,

a rear fender (15) covering at least a part of the motor (M) and the rear Wheel (WR),

a notch (34) for exposing a part of the motor (M) when viewed from the side of the vehicle body is provided on the side surface of the rear fender (15),

the contraction part (12a) extends upwards to a position higher than the height of the notch part (34).

6. The saddle-ride type electric vehicle according to any one of claims 1 to 5,

a pedal part (11) for putting a foot of a driver is arranged at the front upper part of the pipe (50),

a lower cover (40) covering the lower part of the vehicle body is arranged below the pedal part (11),

an upturned part (41) inclined upwards is formed at the rear end of the lower cover (40),

the vehicle-width-direction outermost position (C) of the raised portion (41) is provided so as to be located more inward than the vehicle-width-direction inner outermost position (D) of the tube (50).

7. The saddle-ride type electric vehicle according to claim 6,

the traveling wind discharged from the discharge port (52) abuts on a substantially central portion of the motor (M), and the traveling wind guided by the raised portion (41) abuts on a portion of the motor (M) near the front.