TW201518169A - Electric motorcycle - Google Patents

Abstract

The objective of this invention is to provide an electric motorcycle, comprising a vehicle body frame having a head tube, a front frame, and a pair of right and left rear frames; a compartment box disposed between the pair of right and left rear frames; a rear rocker including a rear rocker main frame and a motor support member; and a motor unit suspended on the pair of right and left rear frames for driving a rear wheel, wherein the rear rocker main frame has a pair of left and right main arms, a first connection member and a second connection member; the pair of left and right main arms are roughly extended in vertical direction and disposed in parallel; the pair of left and right main arms are respectively disposed at the upper end part with a body side installation part for pivoting the rear rocker on the left and right rear frames of the vehicle body frame; the first connection member is across connected between the respective lower parts of the pair of left and right main arms; the second connection member is roughly U-shaped when looking down from top of the vehicle body and is across connected between the pair of left and right main arms and located above the first connection member; the motor support is connected between the first connection member and the second connection member and located at a position deflected to one side in the vehicle body width direction; and the motor support member at least comprises a motor unit fixation part for fixing the motor unit on the motor support member.

Description

Electric motor car

The present invention relates to an electric motor vehicle, and more particularly to a rocker arm structure behind an electric motor vehicle.

[Background literature]

The conventional motor vehicle uses a motor unit as a power source of the vehicle to drive the vehicle, and the power supply from the battery is supplied to the motor control unit, and the motor control unit determines and outputs the driving power based on the command issued by the operator. The motor unit drives it to drive the vehicle through the rear wheel of the motor unit.

In general, in the body structure of the electric motor vehicle described above, there is a suspension system for buffering and absorbing the force exerted by the ground on the vehicle body. Patent Document 1 below discloses a suspension system for an electric motor vehicle including a front fork, a rear rocker arm, and a rear shock absorber. As shown in FIG. 1 of Patent Document 1, the rear rocker arm is a single rocker type rear rocker arm which is disposed only on a single side of the vehicle body, and has one end for pivotally connecting with the vehicle body frame and the rear rocker arm. The other end has a motor unit storage support portion that is attached to and fixed to the motor unit, and the motor unit storage support portion, the motor unit, and the rear wheel train are disposed coaxially. Thereby, the motor unit and the rear wheel can be supported on the vehicle body frame via the rear rocker arm up and down.

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2012-71801

The single rocker arm type rear rocker arm of the above-mentioned Patent Document 1 supports the motor unit and the rear wheel up and down to support the vehicle body frame, and although the vehicle overall weight reduction and the appearance are simple and beautiful, the rear rocker arm can The structural strength is very high. Therefore, in order to ensure the strength of the rear rocker arm, the design and manufacture of the rear rocker arm is usually carried out by aluminum casting and integral molding, so that the production cost is greatly increased.

Further, when the rear rocker arm is manufactured by aluminum casting and integrally molded as in the above-described Patent Document 1, the motor unit housing support portion of the rocker arm after the material is made of aluminum is resonated by the vibration and noise of the motor unit, thereby expanding In order to improve the shortcomings of the vehicle, it is necessary to change the structural design of the motor unit storage support portion of the rocker arm, and the structural complexity of the motor unit storage support portion is improved, which also increases the production cost. .

Therefore, in order to reduce the production cost and take into account the structural strength of the rear rocker arm, it is considered to use a double rocker type rear rocker arm. However, in the case of using the conventional double rocker type rear rocker arm, the rear rocker arm is also disposed near the rear side of the vehicle body on the other side of the vehicle body in the width direction of the vehicle body. Some of the components, which in turn cause inconvenience in the replacement of the tires, can also lead to the appearance of the vehicle can not be simplistic and easy to increase the weight of the car body, which obviously contradicts the concept of electric vehicles seeking to reduce weight.

The present invention has been made in view of the problems in the prior art described above, and an object of the present invention is to provide a method for improving the flexibility of a tire change, and to ensure the structural strength of the rear rocker while ensuring the weight of the vehicle body. An electric motor vehicle with a rocker arm with a low manufacturing cost advantage.

In order to solve the above problems, the present invention has the following features.

First, the first invention of the present invention is an electric motor vehicle, comprising: a vehicle body frame having: a head tube; a front frame from the head tube The end extends obliquely toward the rear and rear of the vehicle; a pair of right and left rear frames extend from the bottom of the front frame toward the rear of the vehicle and then extend obliquely toward the rear upper rear of the vehicle; a storage box disposed on the right and left sides of the pair Between the frames; a rear rocker arm including a rear rocker main frame and a motor support member; and a motor unit suspended from the pair of right and left rear frames via the rear rocker arm and driven one after the other The rear rocker main frame has a pair of left and right main arms, a first connecting member, and a second connecting member; the pair of left and right main arm portions are arranged substantially in the up and down direction and are arranged in parallel with each other, and The pair of left and right main arms are respectively provided with a vehicle body side mounting portion at an upper end portion thereof for pivotally connecting the rear rocker arm to the left and right rear frames of the vehicle body frame, and the first connecting member is connected to the above Between the pair of left and right main arms, the second connecting member is substantially U-shaped when viewed from above the vehicle body, and is bridged between the pair of left and right main arms and located at the first connecting member. Above, the above motor support system Connecting between the first connecting member and the second connecting member and located at a side of one side of the width direction of the vehicle body, the motor supporting member at least comprising a motor unit fixing portion for fastening the motor unit Fixed to the motor support.

According to the technical configuration of the first invention, the first connecting member and the second connecting member are disposed between the left and right rear frames of the vehicle body frame by the pivoting arm, and the first connecting member and the second connecting member are Between the connecting members, the motor supporting member is disposed only on the side of the vehicle body to which the motor unit is mounted, so that no part of the components of the rear rocker arm are disposed with respect to one of the motor units mounted in the width direction of the vehicle body. In the vicinity of the rear wheel on the other side of the side of the car, in addition to improving the ease of tire replacement, the unnecessary component configuration can be reduced to maintain the aesthetic simplicity of the vehicle and reduce the weight of the vehicle body, thereby improving the lightweight of the vehicle. Sex.

In addition, the first connecting member is bridged between the left and right main arms of the rear rocker main frame, and the substantially U-shaped second connecting member is bridged between the left and right main frames of the rear rocker main frame. Above the first connecting member between the arms, and the first connecting member and the second connecting member are connected with the structure of the motor supporting member, a rocking arm structure with high rigidity can be obtained, in addition to being able to withstand the upswing of the rear body The force generated can also withstand the turning of the vehicle The bending moment prevents the rear rocker arm structure from being damaged by the influence of the forces and moments.

Moreover, the rocker arm structure after the first invention is not limited to being manufactured by a specific material, so that the manufacturing cost thereof can be lower than that of the conventional single-arm type rear rocker arm manufactured by the conventional one body, thereby obtaining one. A lightweight and structurally strong rocker with a low manufacturing cost advantage.

According to a second aspect of the present invention, in the electric motor vehicle of the first aspect, the pair of right and left main arms are disposed in a front-rear direction of the vehicle body so as to be inclined toward a rear lower side of the vehicle body, and are viewed from a side width direction of the vehicle body. The second connecting member is disposed substantially orthogonal to the pair of left and right main arms.

According to the technical configuration of the second aspect of the invention, the left and right main arms are disposed so as to be inclined toward the rear and rear of the vehicle body in the front-rear direction of the vehicle body, and the second connecting member and the pair are The left and right main arms are arranged substantially orthogonally. When the rear wheel is subjected to an impact force from the ground, the force transmitted to the pair of left and right main arms through the motor support member and the second connecting member is only It is a positive force, and does not include a component force parallel to the pair of left and right main arms, thereby greatly reducing the influence of the ground impact force and the like on the connection of the second connecting member and the pair of left and right main arms. , thereby improving the structural strength of the overall rear rocker arm to avoid damage to its structure.

A third aspect of the invention is the motor vehicle of the first or second aspect, wherein the second connecting member is disposed behind the storage box to surround the storage box, wherein the left and right main arm systems are respectively located above The first connecting member is located below the storage box when the left and right sides of the glove box are viewed from the side in the width direction of the vehicle body.

According to the technical configuration of the third aspect of the invention, the rear rocker arm is disposed so as to surround the storage box, so that the storage box can be used even if the depth of the storage box is deep in the vertical direction of the vehicle body. And the space between the rear wheels, on the one hand, ensures that the rear rocker arm has enough space to swing up and down with the rear of the vehicle body so that it does not interfere with the compartment. On the one hand, it is not necessary to increase the length of the front and rear of the vehicle body to maintain the miniaturization of the vehicle front and rear direction, thereby improving the weight reduction of the overall vehicle.

A fourth aspect of the invention is the motor vehicle of the first or second aspect, wherein at least one of the pair of left and right main arms is provided with a second link reinforcement member coupled to the pair of left and right main arms At least one of the above is between the second link.

According to the technical configuration of the fourth invention, the connection of the pair of left and right main arms and the second connecting member can be enhanced by providing the second connecting member reinforcing member to at least one of the left and right main arms of one of the rear rocker main frames. The strength further increases the structural strength of the overall rear rocker arm, and strengthens the impact of the rear rocker arm on the rear body swinging up and down and the bending moment generated by the vehicle turning.

A fifth aspect of the invention is the motor vehicle of the first or second aspect, wherein a motor housing is fixed to one of the pair of left and right main arms on the same side as the motor support member in the width direction of the vehicle body. And a portion for fixing a motor casing covering the outside of the motor unit to the motor casing.

According to the technical configuration of the fifth aspect of the invention, the pair of left and right main arms of the rear rocker main frame are provided with a motor housing fixing portion on the motor unit in the vehicle body direction, and are disposed outside the motor unit of the vehicle. A motor housing is provided, and the motor housing is fixed by the motor housing fixing portion, and the rocker arm is relatively low in comparison with the conventional one to integrally form the motor housing and the rear rocker arm, so that the manufacturing cost can be maintained while maintaining low manufacturing cost. The motor casing can also be used to cover and protect the motor unit and the motor wiring harness, thereby enhancing the aesthetic appearance of the vehicle, and accommodating the wiring harness of the motor without being affected by external factors, resulting in disorder or damage.

According to a sixth aspect of the present invention, in the motor vehicle of the fifth aspect, the motor housing fixing portion is connected between the one of the pair of left and right main arms and the second connecting member, and can be used as a second Joint reinforcement.

According to the technical configuration of the sixth invention, the motor housing fixing portion is provided Provided to be connected between the one of the pair of left and right main arms and the second connecting member, and used as the second connecting member reinforcing member, which can be strengthened without increasing the number of components on the rear rocker arm The strength of the connection between the pair of left and right main arms and the second connecting member further improves the structural strength of the overall rear rocker arm, and strengthens the impact of the rear rocker arm on the rear body swinging up and down and the bending moment generated by the vehicle turning. And can improve the weight of the overall vehicle.

According to a seventh aspect of the present invention, the motor vehicle of the first or the second aspect, wherein the one of the pair of right and left main arms on the side different from the motor support member in the width direction of the vehicle body is provided with a first link And a reinforcing member connected between the one of the pair of left and right main arms and the first connecting member.

According to the technical configuration of the seventh invention, since the motor support member is disposed on one side of the motor unit in the width direction of the vehicle body, the side of the rear rocker arm frame adjacent to the motor unit has a certain supporting strength, but The strength of the side of the rear rocker arm frame away from the motor unit is relatively weak, so that a first connecting member is provided by one of the pair of left and right main arms on the different side from the motor support member in the width direction of the vehicle body. The reinforcing member can thereby strengthen the connection strength between the one of the pair of left and right main arms away from the motor unit and the first connecting member, thereby balancing the supporting strength of the two sides of the main body frame of the rear rocker arm to improve the rear rocking The structural strength of the whole arm enables the rear rocker arm to effectively withstand the impact of the rear body swinging up and down and the bending moment generated by the vehicle turning.

The invention is the motor vehicle of the first or the second aspect, wherein the first connecting member is provided with a tripod connecting member connected to the body supporting tripod, and the tripod connecting The member is located on a different side from the motor support member in the width direction of the vehicle body.

According to the technical configuration of the eighth aspect of the invention, the tripod connecting member for connecting the body supporting stand and the vehicle body is disposed on the rear rocker arm, and is located different from the motor support member in the vehicle body width direction. Side, whereby the rear rocker main frame is subjected to, for example, the force exerted by the motor support member on the rear rocker main frame, which is generated by the up and down swing of the rear vehicle body, And the force exerted by the above-mentioned tripod connecting member on the rear rocker main frame due to the standing up of the vehicle, the different stresses of the two can be evenly dispersed in the rear rocker main frame, thereby improving the overall The structural strength of the rear rocker arm.

The ninth invention is the motor vehicle of the eighth aspect, wherein the first connecting member is provided with a tripod connecting member reinforcing member connected to the first connecting member, the motor supporting member and the foot Between the connectors.

According to the technical configuration of the ninth invention, the tripod connecting member reinforcing member is connected between the first connecting member, the motor supporting member and the tripod connecting member, and the first portion can be added when the vehicle is erected. The structural strength between the connecting member and the tripod connecting member, and the structural strength between the motor supporting member and the first connecting member, thereby improving the structural strength of the entire rocker arm.

1‧‧‧Electric motor car

2‧‧‧Hands to the handle

2A‧‧‧Electric door switch

3‧‧‧ Front hood

4‧‧‧ front wheel

5‧‧‧ pedals

6‧‧‧Motor unit

7‧‧‧Motor housing

8‧‧‧ Rear wheel

9‧‧‧Cushion Department

10‧‧‧ side car cover

10L‧‧‧ left side hood

10R‧‧‧Side side cover

11‧‧‧Back cover

12‧‧‧ Seat locking mechanism

13‧‧ ‧ Storage box

14‧‧‧Motor control unit

15‧‧‧ Rear fender

15A‧‧‧Fixed bracket

16‧‧‧ rear shock absorber

20‧‧‧ body frame

21‧‧‧ head tube

22‧‧‧ Front fork

23‧‧‧ Front frame

24L, 24R‧‧‧ left and right rear frames

25‧‧‧End frame

26‧‧‧Door bracket

27‧‧‧ rear rocker bracket

28‧‧‧ rear shock absorber fixing bracket

30‧‧‧ rear rocker

31‧‧‧Back rocker main frame

32‧‧‧Motor support

32A‧‧·Motor fixing department

33‧‧‧Car body installation department

40‧‧‧Motor wiring harness

40A‧‧‧Motor signal transmission line

40B‧‧‧Power transmission line

50‧‧‧body support stand

61‧‧‧Motor unit main body

61A‧‧‧Motor housing fixing

62‧‧‧Motor unit base plate

62A‧‧‧Motor housing fixing

71‧‧‧First motor housing fixing part

72‧‧‧Second motor housing fixing part

73‧‧‧ Third motor housing fixing part

241L, 241R‧‧‧ left and right foot frame

242L, 242R‧‧‧ left and right ascending frame

243L, 243R‧‧‧ left and right seat cushion lower frame

301‧‧‧Motor housing fixing part (second joint reinforcement)

302‧‧‧Second joint reinforcement

303‧‧‧First joint reinforcement

304‧‧‧ tripod connector

305‧‧‧Foot joint connecting piece reinforcement

306‧‧‧ Rear fender connector

307‧‧‧煞车线支架

311L‧‧‧ Left main arm

311R‧‧‧Right main arm

312‧‧‧ First link

313‧‧‧Second link

611‧‧‧Power transmission line connection

612‧‧‧Motor signal transmission line connection

621‧‧‧Fender fender connection

622‧‧‧ rear shock absorber connection

F‧‧‧force

H‧‧‧Hinged pin

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a left side elevational view of one of the electric motor vehicles of a preferred embodiment of the present invention.

Figure 2 is a right side elevational view of the rear side of the electric motor vehicle in accordance with a preferred embodiment of the present invention.

3 is a left side view of the side of the vehicle body after removing the side covers on the left and right sides in the electric motor vehicle according to a preferred embodiment of the present invention.

4 is a schematic view showing the assembly of the rocker arm, the motor unit, and the motor casing of the electric motor vehicle according to a preferred embodiment of the present invention.

5(A) to (E) are views of the rocker arm after a preferred embodiment of the present invention: (A) perspective view (B) front view (C) left view (D) rear view (E) right view.

Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

As shown in Fig. 1, this embodiment is applied to an electric motor vehicle 1. However, the present invention is not limited to application to a Scooter type electric two-wheeled vehicle, and is applied to other types of locomotives, such as a hybrid electric locomotive including an engine, an electric three-engine locomotive, or an electric off-road. The present invention can also be applied to a vehicle or the like and achieves the effects of the present invention.

In the following description, the front, rear, left, and right directions respectively indicate the direction before, after, and to the left and right of the rider riding the electric motor vehicle 1.

As shown in FIG. 1 and FIG. 2, an electric motor vehicle 1 according to a preferred embodiment of the present invention is a scooter type electric two-wheeled vehicle including a pair of steering handles 2, a body frame 20, and a front cover 3. Main components such as the front wheel 4, the footboard 5, the motor unit 6, the rear wheel 8, the seat cushion portion 9, the side cover 10 (10L, 10R), and the rear cover 11.

<Operation handle>

As shown in FIG. 1, the steering handle 2 is provided on the head pipe 21 of the vehicle body frame 20, which will be described later, so as to extend in the vehicle body width direction, for controlling the direction in which the vehicle travels. The steering handle 2 has an electric door handle 2A, and the rider can rotate the steering handle 2A to the handle 2 to cause the vehicle to generate a mechanical signal and turn the sensor (not shown) by an electric door. It is converted into an electrical signal and transmitted to the motor control unit 14, which can drive and control the motor unit 6 to cause the electric motor vehicle 1 to travel and control the speed of travel.

<body frame>

As shown in FIGS. 1 and 3, the vehicle body frame 20 includes a head pipe 21 that supports the steering handle 2, and a front frame 23 and a pair of right and left rear frames 24L extending obliquely from the lower end portion of the head pipe 21 substantially toward the rear and rear of the vehicle. 24R. Each of the pair of right and left rear frames 24L and 24R includes a step frame 241L and 241R extending from the bottom of the front frame 23 toward the rear of the vehicle of the electric motor vehicle 1 and a rear upper portion of the vehicle from the pedal frame 241L and 241R to the electric motor vehicle 1. The rising section frames 242L and 242R extending obliquely and the seat cushion lower frames 243L and 243R extending from the rising section frames 242L and 242R to the rear of the electric motor vehicle 1 are provided. Further, the head pipe 21 is rotatably pivotally provided at its lower end with a front fork 22 that rotatably supports the front wheel 4.

The pedal frame 241L and 241R are coupled to the end of the front frame 23 and joined to the end thereof, and then extend rearward in parallel with the two frames on the left and right sides. The two frame ends of the pedal frames 241L, 241R are then inclined parallel to the rear of the vehicle of the electric motor vehicle 1 The extension frames 242L, 242R are formed. The rising section frames 242L and 242R are erected obliquely rearward and upward and extend in parallel to the lower side of the front end of the seat cushion portion 9, that is, from the end of the rising section frames 242L and 242R to the rear of the vehicle of the electric motor vehicle 1 to the rear end frame 25, The seat cushion lower frames 243L and 243R are configured as described above.

The seat cushion lower frames 243L, 243R may be left and right asymmetrical structures. For example, as shown in FIG. 3, the left seat cushion lower frame 243L is designed to be interconnected by a plurality of frame sections having different slopes with respect to the ground. The lower frame portion 243R of the seat cushion portion is extended to the rear of the vehicle so as to maintain a substantially constant slope with respect to the ground. However, the configuration of the under-frame lower frames 243L and 243R is not limited thereto, and may be other forms of left-right asymmetrical structures or left-right symmetric structures.

In addition, as shown in FIG. 1, on the upper surface of the rear frame 243L, 243R below the seat cushion portion, a door-shaped bracket 26 may be added, in addition to increasing the overall strength of the lower frame portion 243L, 243R and supporting the seat cushion portion. In addition, the vehicle parts (Motor Control Unit (MCU) 14 shown in FIG. 1) can be protected from above by the pressure and impact force from the seat cushion portion 9.

<Storage Box>

As shown in FIGS. 1 and 3, a storage box 13 for storing a personal belonging of a rider is provided between the pair of right and left rear frames 24L and 24R. In general, a storage space of a battery (not shown) for supplying power to the electric vehicle 1 may be provided below the pedal portion 5, but the storage space of the battery may be provided integrally with the storage box 13. In the latter case, the storage box 13 is usually formed into a shape that is long in the vertical direction, and the storage box 13 is provided with a sufficient depth to accommodate the personal items of the battery and the rider. The storage box 13 is not limited to be formed in a shape that is long in the vertical direction, and may be designed to have another shape in accordance with the shape of the vehicle and the arrangement of the mounting members.

<seat locking mechanism>

As shown in FIG. 1, a seat cushion portion 9 is disposed above the storage box 13 The hinge pin H of the front end portion is centered, and is detachably attached to the glove box 13 disposed between the pair of right and left rear frames 24L and 24R. Further, the rear end portion of the seat cushion portion 9 has a seat lock mechanism 12, and the seat lock portion 12 is locked by the seat lock mechanism 12.

<side car cover>

As shown in FIGS. 1 and 2, left and right side covers 10L and 10R of the electric motor vehicle 1 are provided on the left and right sides of the storage box 13 below the seat cushion portion 9 so as to cover the storage box 13. A rear cover 11 is disposed behind the seat cushion portion 9 and is coupled to the side of the vehicle to be connected between the side cover 10L, 10R. Moreover, the side cover 10L, 10R may be two separate hoods, or may be an integrated hood.

<motor unit>

Next, a detailed description will be given of the motor unit 6.

As shown in FIGS. 1 and 3, the motor unit 6 is disposed on one of the left and right sides of the rear wheel 8, and is coupled to the wheel axle of the rear wheel 8 via a reduction gear (not shown) for driving the rear wheel. The driving of the vehicle. The motor control unit 14 for driving and controlling the motor unit is entirely or mostly surrounded by the side cover 10L, 10R and the rear cover 11, and is disposed under the seat cushion portion of the pair of left and right rear frames 24L, 24R. 243L, 243R is located above the rear wheel 8 and behind the storage box 13, and is located substantially directly below the door bracket 26. With the above configuration, the motor control unit 14 can be fully protected from damage caused by external forces and the like.

As shown in FIG. 3, the motor control unit 14 and the motor unit 6 are connected with three power transmission lines 40B for transmitting driving power of the motor and at least one motor signal transmission line 40A for transmitting state information of the motor. The transmission line 40B and the motor signal transmission line 40A are each connected to the motor unit 6 at one end and connected to the motor control unit 14 at one end to be connected between the motor control unit 14 and the motor unit 6. In addition, the motor signal transmission line 40A and the power transmission line 40B are preferably bundled together to form a motor wiring harness 40, which improves the cleanliness of the routing configuration and increases the Wait for the protection of the line. However, the arrangement of the power transmission line 40B and the motor signal transmission line 40A is not limited thereto, and other configurations may be adopted in accordance with the configuration of the vehicle and the arrangement of the mounting members.

Next, as shown in FIGS. 3 and 4, the motor unit 6 includes a motor unit main body 61 and a motor unit base plate 62. The motor unit main body 61 is mounted and fixed to the motor unit base plate 62, and has a power transmission line connecting portion 611 and a motor signal transmission line connecting portion 612, and the power transmission line connecting portion 611 is connected to the three power transmission lines 40B. For receiving the power transmitted from the motor control unit 14 as its driving power, the motor signal transmission line connecting portion 612 is connected to the motor signal transmission line 40A for the state information signal of the motor unit 6 (such as the angle of the rotor). The position, temperature, etc. are transmitted to the motor control unit 14, whereby the motor control unit 14 controls the operation of the motor unit 6 via the three power transmission lines 40B based on the current state information of the motor unit 6. Further, as shown in FIG. 4, the motor unit main body 61 further includes a motor case fixing portion 61A for fixing the motor case 7 to the motor case fixing portion 61A.

As shown in FIG. 3, FIG. 4 and FIG. 5A, the motor unit base plate 62 is fixed to the front side of the vehicle body in the front-rear direction of the motor unit base plate 62, and is fixed to the rocker arm as follows. The motor support portion 32A of the motor support 32 of 30 can be suspended from the left and right rear frames 24L, 24R via the rear rocker arm 30 via the rear rocker arm 30.

In addition, as shown in FIGS. 3 and 4, the motor unit base plate 62 also has a rear fender connecting portion 621 disposed above the motor unit base plate 62 for the motor unit base plate 62. The fender 15 is connected after being fixed above the rear wheel 8, whereby the rear fender 15 is fixed to the motor unit 6. Further, the motor unit base plate 62 is also provided with a motor case fixing portion 62A for fixing the motor case 7 to the motor case fixing portion 62A.

Further, as shown in FIGS. 3 and 4, a rear shock absorber connecting portion 622 is provided at the rear side of the vehicle body in the front-rear direction of the vehicle body of the motor unit base plate 62, and a rear shock absorber 16 is connected thereto. The rear shock absorber 16 extends substantially in the up and down direction of the vehicle body, and one end is disposed on the vehicle body. The rear seat frame 243L of the left rear seat frame 24L is connected to the rear shock absorber fixing bracket 28, and one end is connected to the rear shock absorber connecting portion 622, whereby the rear shock absorber connecting portion 622 can be utilized while the vehicle is running. Absorbs and cushions the ground's force on the rear wheels.

<Motor housing>

As shown in FIG. 3 , the motor unit 6 is covered with a motor housing 7 extending substantially in the front-rear direction from the front-rear direction and covering the motor unit 6 and the motor wiring harness 40 in the front-rear direction of the vehicle body. Enhancing the aesthetics of the vehicle, and protecting the motor unit 6 and ensuring that the storage of the motor wiring harness 40 is not affected by external factors, causing its confluence to be messy or damaged. Further, the motor casing 7 is not limited to extend substantially in the front-rear direction from the front-rear direction in the front-rear direction of the vehicle body, and may be configured in other configurations in accordance with the shape of the vehicle and the arrangement of the mounting members.

As shown in FIG. 4, the motor casing 7 is provided with a first motor casing fixing portion 71, a second motor casing fixing portion 72, and a third motor casing fixing portion 73, which are respectively fixed to the motor casing of the rear rocker arm 30 described later. The motor portion fixing portion 61A of the motor unit main body portion 61 and the motor housing fixing portion 62A of the motor unit base plate 62 are attached and fixed. The motor casing 7 can be surely fixed to the motor unit 6 and the rear rocker arm 30 by the mounting and fixing method of the motor casing 7.

<Back rocker>

Next, a detailed description will be given of the rear rocker arm 30.

According to FIGS. 5(A) to 5(E), the rear rocker arm 30 includes a rear rocker main frame 31 and a motor support member 32. The rear rocker main frame 31 has a pair of left and right main arms 311L, 311R, and a first A link member 312 and a second link member 313. The pair of right and left main arms 311L and 311R are arranged to extend substantially in the vertical direction and are arranged in parallel with each other, and a first coupling 312 is bridged between the lower portions of the pair of left and right main arms 311L and 311R. The left and right end portions of the first connecting member 312 may be respectively connected to the lower end portions of the pair of left and right main arms 311L and 311R, or may be connected to substantially lower portions of the pair of left and right main arms 311L and 311R, respectively. According to FIGS. 5(B) and 5(D), the second connecting member 313 is bridged between the pair of left and right main arms 311L, 311R above the first connecting member 312, and according to 5(A) The second connecting member is substantially U-shaped when viewed from above the vehicle body.

5(A), 5(B), and 5(D), between the first link member 312 and the second link member 313, a position on one side of the motor unit 6 in the vehicle body width direction is biased. A motor support member 32 is provided. The motor support member 32 is substantially in the form of a sheet and is disposed on the first link so as to be substantially perpendicularly connected to the first link member 312 and the second link member 313, respectively. Between the piece 312 and the second link 313. By the arrangement of the motor support member 32, a rocker structure with high rigidity can be obtained, which can withstand the force generated when the rear body body swings up and down, and can also withstand the bending moment generated by the turning of the vehicle, and prevent the rear rocker arm. The structure is damaged by the effects of these forces and moments. Further, the motor support member 32 is defined in a sheet shape, and the motor support member 32 is provided only at a position biased toward the side of the vehicle body on which the motor unit 6 is mounted, so that the rear wheel 8 can be mounted with respect to the motor unit 6 The other side of the vehicle body on one side is not equipped with the components of the rear rocker arm 30 as much as possible, thereby improving the ease of tire replacement and maintaining the aesthetic simplicity and lightness of the vehicle. However, the motor support member 32 is not limited to a sheet shape, and may be tubular or other shapes, and is not limited to the above configuration, and may be other motors sufficient to support the overall strength of the rear rocker main frame 31 and disposed in a biased manner. The structure of the body side of the unit 6.

As shown in FIG. 5(A), the upper end portions of the pair of left and right main arms 311L and 311R are respectively provided with a vehicle body side mounting portion 33, whereby the rear rocker arm 30 can be pivotally connected to the vehicle body as shown in FIG. The left and right rear frames 24L, 24R are attached to the rocker arm fixing bracket 27. 5(A), 5(C), 5(E), the motor support member 32 of the rear rocker arm 30 is provided with a motor fixing unit 32A, which can be as shown in FIG. 3 and FIG. The rocker arm 30 and the motor unit 6 are fixedly connected via a motor fixing unit 32A. The motor fixing unit 32A can be configured as four holes as shown in FIG. 5(C), and the motor unit base plate 62 is locked thereto by a connecting member such as a screw. However, the motor fixing unit 32A is configured. It is not limited to this, and other motors can be fixed. The constituent means of the fixed unit 32A and the motor unit 6 are fixedly connected.

Further, as shown in FIGS. 5(C) and 5(E), the second connecting member 313 and the pair of left and right main arms 311L and 311R are arranged substantially orthogonally when viewed from the left-right direction of the vehicle body. The second connecting member 313 is disposed to be orthogonal to the pair of left and right main arms 311L and 311R, and is transmitted to the first through the motor support member 32 and the second connecting member 313 when affected by the ground impact force. The force acting on the left and right main arms 311L, 311R will only be a positive force (F as indicated in Fig. 5(C)), and will not include the force component parallel to the pair of left and right main arms 311L, 311R. Thereby, the influence of the ground impact force and the like on the connection of the second link member 313 and the pair of left and right main arms 311L, 311R can be reduced, thereby improving the structural strength of the entire rear rocker arm 30.

Further, as shown in FIG. 1, the rear rocker arm 30 is located behind the storage box 13 and in front of the rear wheel 8, and the rear rocker arm 30 is preferably disposed to surround the storage box 13. That is, the second connecting member 313 having a substantially U-shape in the rear rocker arm 30 is disposed behind the storage box so as to surround the storage box, and the pair of left and right main arms 311L and 311R are respectively located in the storage compartment. The left and right sides of the case 13 are disposed to be inclined toward the rear and rear of the vehicle body, and the first link member 312 is located below the glove box 13. By the arrangement of the rocker arm 30 as described above, the space between the storage box and the rear wheel can be utilized, and the rear rocker arm 30 does not interfere with the storage box 13 when it is swung up and down with the rear of the vehicle body, and there is no need to increase The length of the front and rear of the vehicle body further maintains the miniaturization of the vehicle front and rear direction and the weight reduction of the entire vehicle body. However, the spatial arrangement of the rear rocker arm 30 is not limited thereto, and may be designed in other shapes in accordance with the shape of the vehicle and the arrangement of the mounting members. Further, the pair of right and left main arms 311L and 311R are not limited to be disposed to be inclined toward the rear and rear of the vehicle body, and may be disposed to be inclined toward the front lower side of the vehicle body or to extend downward from the upper side in the vertical direction.

Next, according to FIG. 5(A), a second connector reinforcement member 301 is disposed at a junction between the second connecting member 313 of the rear rocker arm 30 and the left and right main arms 311L, 311R, respectively. 302, thereby enhancing the connection strength between the pair of left and right main arms 311L, 311R and the second connecting member 313, thereby improving the structural strength of the overall rear rocker arm 30, and enhancing the impact of the rear rocker arm 30 on the rear body swinging up and down. And the bearing capacity of the bending moment generated by the turning of the vehicle. The shape of the second connecting member reinforcing members 301 and 302 is preferably substantially square, and is located below the second connecting member 313 of the rear rocker arm 30, with any two adjacent and substantially perpendicular sides respectively opposite to the pair of left and right mains. The arms 311L and 311R and the second link 313 are connected to each other. However, the shape of the second connecting member reinforcing members 301 and 302 is not limited to a square shape, and may be other shapes, and is not limited to the above configuration, and may be other enough to enhance the pair of left and right main arms 311L, 311R and the first The structure of the joint strength of the two joint members 313.

Preferably, the second connecting member reinforcing members 301 and 302 are disposed on one side of the vehicle body width direction adjacent to the motor unit 6 (as in the second connecting member reinforcing member 301 in this embodiment), and the motor housing fixing portion is disposed on the second connecting member reinforcing member 301, 302. The motor housing 7 is fixed to the motor housing fixing portion (the second connector reinforcing member 301). The motor housing fixing portion is not limited to be disposed on the second connecting member reinforcing member 301, and may be disposed in one of the pair of left and right main arms 311L, 311R of the motor unit 6 in the vehicle body width direction. Any position on the second link 313.

Next, as shown in FIGS. 5(A) and 5(B), one of the pair of right and left main arms 311L and 311R is provided on the side of the vehicle body in the width direction of the motor support member 32, and a first coupling member is provided. The member 303 is bridged between the lower end portion of the one of the pair of left and right main arms 311L and 311R on the side different from the motor support member 32 in the vehicle body width direction and the first coupling member 312. By the arrangement of the first coupling member reinforcement member 303, the connection between the pair of left and right main arms 311L, 311R in the vehicle body width direction on the side different from the motor support member 32 and the first coupling member 312 can be enhanced. The strength, and thus the strength of the support on both sides of the rocker main frame 31 in the width direction of the vehicle body to increase the rigidity of the rear rocker arm 30, so that the rear rocker arm can effectively withstand the impact of the rear body swinging up and down and the vehicle turning The bending moment generated, etc. In addition, the first connecting member reinforcing member 303 is not limited to the above configuration. It is also possible to have other structures sufficient to enhance the connection strength between the pair of left and right main arms 311L, 311R and the first connecting member 312 and achieve the above-described effects.

Next, as shown in FIGS. 5(A), 5(B), and 5(D), a tripod connector 304 is disposed on the first connecting member, and the body supporting leg can be used as shown in FIG. The frame 50 is coupled to the stand connector 304. In addition, the tripod connector 304 is preferably disposed on a different side from the motor support member 32 in the vehicle body width direction, whereby the rear rocker main frame 31 is generated by, for example, simultaneous swinging of the rear vehicle body. When the force applied by the motor support member 32 to the rear rocker main frame 31 and the force exerted by the above-described tripod connector 304 on the rear rocker main frame 31 caused by the vehicle standing up, the two are different. The stress can be uniformly dispersed in the rear rocker main frame 31, so that the structural strength of the integral rear rocker arm 30 can be increased without concentrating the applied stress on one side of the rear rocker main frame 31. Causes damage to the rear rocker arm 30.

In addition, as shown in FIG. 5(A) and FIG. 5(B), a tripod connector reinforcing member 305 is disposed on the first connecting member 312, and is connected to the first link on the front side of the vehicle body of the rear rocker arm 30. Between the piece 312 and the above-described tripod connector 304. By the arrangement of the tripod connector reinforcing member 305, the structural strength between the first connecting member 312 and the tripod connecting member 304 can be increased when the vehicle is erected. In addition, the tripod connector reinforcing member 305 is preferably disposed in a front-to-back direction of the vehicle body in a front-to-rear direction of the vehicle body in a vehicle body width direction, and is connected to the motor support member 32, and the tripod is attached. The connector reinforcement 305 can also have the effect of increasing the structural strength between the motor support 32 and the first link 312. In addition, the above-described tripod connector reinforcing member 305 is not limited to the above configuration, and may be other structures sufficient to enhance the structural strength between the first connecting member 312 and the tripod connecting member 304.

Further, as shown in FIGS. 5(A), 5(C), and 5(E), a rear mud is disposed on a side of the second connecting member 313 that is different from the motor support member 32 in the vehicle body width direction. The board connector 306 extends from the second link member 313 toward the rear of the vehicle body in the front-rear direction of the vehicle body, whereby the motor unit 6 is disposed in the vehicle body width direction as shown in FIG. In the other side of the vehicle body side, the rear fender connector 306 is fixedly coupled to the fixing bracket 15A provided on the rear fender 15, whereby the rear fender 150 is mounted and fixed to the rear rocker arm 30.

Next, as shown in FIGS. 5(A), 5(C), and 5(E), a brake wire holder 307 is provided at a lower end portion of at least one of the pair of left and right main arms 311L and 311R for supporting and protecting. The brake line (not shown) that transmits the brake signal.

Further, each of the members of the rear rocker arm 30 (ie, the left main arm 311L, the right main arm 311R, the first link 312, the second link 313, the motor support 32, the vehicle body mounting portion 33, and the motor housing fixing portion 301) (second joint reinforcement), second joint reinforcement 302, first joint reinforcement 303, tripod attachment 304, tripod attachment reinforcement 305, rear fender connector 306, brake wire bracket Preferably, the connection between 307 and the like is by soldering or welding.

The technical content and technical features of the present invention have been disclosed as above, and those skilled in the art can still make various substitutions and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be construed as being limited by the scope of the appended claims

30‧‧‧ rear rocker

31‧‧‧Back rocker main frame

32‧‧‧Motor support

32A‧‧·Motor fixing department

33‧‧‧Car body installation department

301‧‧‧Motor housing fixing part (second joint reinforcement)

302‧‧‧Second joint reinforcement

303‧‧‧First joint reinforcement

304‧‧‧ tripod connector

305‧‧‧Foot joint connecting piece reinforcement

306‧‧‧ Rear fender connector

307‧‧‧煞车线支架

311L‧‧‧ Left main arm

311R‧‧‧Right main arm

312‧‧‧ First link

313‧‧‧Second link

Claims (9)

An electric motor vehicle comprising: a vehicle body frame having: a head pipe; a front frame extending obliquely from the lower end of the head pipe toward the rear lower side of the vehicle; and a pair of right and left rear frames from the bottom of the front frame Extending to the rear of the vehicle and then extending obliquely to the rear upper and lower sides of the vehicle; a storage box disposed between the pair of right and left rear frames; a rear rocker arm including a rear rocker main frame and a motor support member; And a motor unit suspended from the pair of right and left rear frames via the rear rocker arm and driving a rear wheel; wherein the rear rocker main frame has a pair of left and right main arms, a first connecting member, And a second connecting member; the pair of right and left main arms are arranged substantially in the vertical direction and arranged in parallel with each other, and the pair of left and right main arms are respectively provided with a vehicle body side mounting portion at an upper end portion thereof, which is used for The rear rocker arm is pivotally connected to the left and right rear frames of the vehicle body frame, wherein the first connecting member is bridged between the lower portions of the pair of left and right main arms, and the second connecting member is viewed from above the vehicle body. It is roughly U-shaped. The motor support member is connected between the first connecting member and the second connecting member, and is located between the pair of left and right main arms, and is located above the first connecting member, and is located between the first connecting member and the second connecting member, and is located at a width of the vehicle body At a position on one side of the direction, the motor support member includes at least a motor unit fixing portion for fixing the motor unit to the motor support member. The electric motor vehicle according to claim 1, wherein the pair of left and right main arms are disposed in a front and rear direction of the vehicle body so as to be inclined toward a rear lower side of the vehicle body, and the second connecting member is viewed from a side width direction of the vehicle body. The pair of left and right main arms are arranged substantially orthogonally. The electric motor vehicle of claim 1 or 2, wherein the second connecting member is disposed behind the storage box to surround the storage box, wherein the left and right main arm systems are respectively located on the left and right sides of the storage box, and the vehicle is installed When the body width direction is viewed from the side, the first connecting member is located below the storage box. The electric motor vehicle of claim 1 or 2, wherein at least one of the pair of left and right main arms is provided with a second link reinforcement member coupled to the at least one of the pair of left and right main arms and the second link Between pieces. The electric motor vehicle of claim 1 or 2, wherein a motor housing fixing portion is provided on one of the pair of left and right main arms on the same side as the motor support member in the vehicle body width direction, and is configured to cover the above A motor housing outside the motor unit is fixed thereto. The electric motor vehicle according to claim 5, wherein the motor casing fixing portion is connected between the one of the pair of right and left main arms and the second coupling member, and can be used as a second coupling member. The electric motor vehicle according to claim 1 or 2, wherein one of said pair of left and right main arms on a different side from said motor support member in a width direction of said vehicle body is provided with a first connecting member reinforcing member connected to said one Between the one of the left and right main arms and the first connecting member. The electric motor vehicle of claim 1 or 2, wherein a tripod connecting member is disposed on the first connecting member, and is connected to the body supporting tripod, and the tripod connecting member is located in the vehicle with the motor supporting member. Different sides in the width direction of the body. The electric motor vehicle of claim 8, wherein A tripod connector reinforcing member is disposed on the first connecting member, and is connected between the first connecting member, the motor supporting member and the tripod connecting member.