TWI820446B - electric car - Google Patents

Abstract

An electric vehicle includes: a frame; a drive box installed on the frame and including a drive motor; and an auxiliary machine box including a shift motor and spaced apart from the drive box. It is installed on the frame and located in front of the drive box.

Description

electric car

The present invention relates to a locomotive, in particular to an electric locomotive.

Common electric motorcycles currently on the market usually use centrifugal clutches or manual methods to switch gears. Take an electric motorcycle with two gear switching requirements as an example. If there is a precise gear shifting requirement, a shift motor is required to perform the switching action. If the gear is shifted only by hand, the timing of the gear shift will be inaccurate. On the contrary, if a centrifugal clutch is used to shift gears, energy will be lost. Furthermore, the installation of the shift motor needs to consider configuration issues, and more consideration needs to be given to maintainability and body weight.

The Republic of China Patent No. I593573 reveals an electric motorcycle structure that improves motor efficiency. The description and the first drawing of the Republic of China Patent No. 1593573 mainly reveal that an electric motor for driving the electric motorcycle is provided in front of the rear swing arm, and the sixth drawing reveals that there is an automatic switch on the side of the shift shaft. A shift motor for switching gears, wherein the shift motor is not installed on the frame and is located below the electric motor, and the rotation axis of the shift motor is orthogonal to the rotation axis of the electric motor. In addition, the electric motor is located far away from the center of the vehicle, and the center of gravity is significantly higher.

Therefore, an object of the present invention is to provide an electric vehicle.

Therefore, the electric vehicle of the present invention includes: a frame, including a head tube, a main tube extending downward from the head tube, two side tubes extending rearward from the left and right sides of the main tube, and a tube arranged on the side tubes. Each side tube has a footrest tube portion, a riser tube portion extending upward from the rear end of the footrest tube portion, and a rear frame portion extending rearwardly from the rear end of the riser tube portion. ; a drive box, installed on the frame, and includes a drive motor, and is located behind the closed tube; and an auxiliary machine box, including a shift motor, and is installed spaced apart from the drive box; On the vehicle frame, it is located in front of the drive box and is located on the closed tube.

In some embodiments of the present invention, the drive box further includes a shift mechanism and a gear transmission mechanism, and the auxiliary machine box further includes a transmission mechanism for decelerating the rotational speed of the shift motor.

In some embodiments of the present invention, the electric vehicle further includes an actuating mechanism connected between the transmission mechanism of the auxiliary machine box and the shifting mechanism of the driving box, wherein the shifting mechanism has a Pressure plate clutch, the transmission mechanism of the auxiliary machine box can drive the pressure plate clutch between several gears through the driving mechanism Gear switch.

In some embodiments of the present invention, the transmission mechanism has a worm that is disposed on the axis of the shift motor and rotates coaxially with the shift motor, a worm gear that meshes with the worm, and a gear that meshes with the worm gear. set, and a turntable meshing with the gear set.

In some embodiments of the present invention, the electric vehicle further includes an actuating mechanism connected between the transmission mechanism of the auxiliary machine box and the shifting mechanism of the driving box, wherein the shifting mechanism has a A pressure plate clutch and a shift shaft. The actuating mechanism includes a transmission member, a rotating member, and an actuating rod provided between the turntable and the shift shaft. Both ends of the transmission member are respectively fixed on the turntable. And on the rotating member, the rotating plate can rotate to a plurality of rotating positions respectively corresponding to several gears. When the rotating plate rotates to one of the rotating positions, the transmission member drives the rotating member to rotate, and the rotating member then drives the rotating member. The triggering lever rotates, and then the triggering lever triggers the shift shaft to translate, thereby triggering the pressure plate clutch to switch to the corresponding gear.

In some embodiments of the present invention, a rear rocker arm and a rear wheel supported on the rear end of the rear rocker arm are further included, wherein the gear transmission mechanism is provided with an output shaft protruding to the outside of the drive box, and the rear wheel is The front end of the rocker arm is swingably supported on the drive box with the output shaft as the rotation center.

In some embodiments of the present invention, a seat is provided on the frame for the user to sit on, wherein the seat includes a main driver's seat for the driver to sit on, and the drive box is located on Below the front edge of the driver's seat.

In some embodiments of the present invention, a footrest is provided on the vehicle frame for the driver to place his feet, wherein the auxiliary machine box is located below the rear end of the footrest.

In some embodiments of the present invention, the closed tube has two arm portions extending upward from the side tubes and toward the center of the electric vehicle body, and a connecting portion connecting the arm portions. The auxiliary machine box is installed below the connecting part and is located in an accommodation space jointly defined by the arm parts and the connecting part.

In some embodiments of the present invention, the lowest point of the auxiliary machine box is not higher than the height of the top surface of the drive box.

In some embodiments of the present invention, a driving mechanism connected between the transmission mechanism of the auxiliary machine box and the shifting mechanism of the drive box is further included, wherein the transmission mechanism has a gear that can be shifted by the gearbox. A turntable driven by a gear motor, the shift mechanism has a pressure plate clutch and a shift shaft, the actuating mechanism includes a transmission member, a rotating member, and an actuating rod disposed between the turntable and the shift shaft, Both ends of the transmission member are respectively fixed on the turntable and the rotating member. The turntable can rotate to a plurality of rotation positions respectively corresponding to several gears. When the turntable rotates to one of the rotation positions, the transmission member The rotating member is driven to rotate, and the rotating member drives the driving rod to rotate, and then the driving rod drives the shift shaft to translate, so as to drive the pressure plate clutch to switch to the corresponding gear.

In some embodiments of the present invention, the transmission member of the actuating mechanism is a steel cable.

In some embodiments of the present invention, the transmission member of the actuating mechanism is generally L-shaped.

In some embodiments of the present invention, the transmission member of the actuating mechanism is substantially straight.

In some embodiments of the present invention, the transmission member extends along a straight line. When the electric vehicle is viewed from above, the turntable of the transmission mechanism, the transmission member and the rotating member of the actuating mechanism are arranged along the straight line.

In some embodiments of the present invention, the straight line is not parallel to a straight traveling direction of the electric vehicle.

In some embodiments of the invention, the angle between the straight line and the straight traveling direction is approximately 45°.

In some embodiments of the present invention, the driving mechanism further includes an outer tube covering the middle part of the transmission member and being between the turntable of the transmission mechanism and the rotating member of the driving mechanism.

In some embodiments of the invention, the outer tube is a rigid member.

The effect of the present invention is to reduce the weight of the drive motor, improve the maintainability of the drive box and the auxiliary machine box, and prevent the shift motor from being affected by the high temperature of the drive motor operation, so it can The failure rate of the shift motor is reduced, thereby increasing the service life of the shift motor.

In some embodiments of the present invention, the drive box and the auxiliary machine box are modularized to improve the efficiency of manufacturing and maintenance.

In some embodiments of the present invention, according to the requirements of automatic forced shifting or manual shifting, the shift motor can be made to rotate accordingly, and finally drive the pressure plate clutch to switch to the required gear, and due to the The shift time of the pressure plate clutch is short, so there is no problem of too long shift time like the centrifugal clutch.

In some embodiments of the present invention, the auxiliary machine box is modularized to improve the efficiency of manufacturing and maintenance.

In some embodiments of the present invention, according to the requirements of automatic forced shifting or manual shifting, the shift motor can be made to rotate accordingly, and finally drive the pressure plate clutch to switch to the required gear, and due to the The shift time of the pressure plate clutch is short, so there is no problem of too long shift time like the centrifugal clutch.

In some embodiments of the present invention, the swing inertia of the rear swing arm can be reduced, thereby improving driving comfort.

In some embodiments of the present invention, the center of gravity of the entire electric vehicle can be optimized.

In some embodiments of the present invention, the center of gravity of the electric vehicle can be lowered and closer to the center of the vehicle to improve driving stability.

In some embodiments of the present invention, the auxiliary machine box can be protected by the side tubes and the closed tube to prevent the auxiliary machine box from being hit by foreign objects.

In some embodiments of the present invention, the auxiliary machine box can be kept away from dust, sand, mud, water and other pollutants on the ground.

In some embodiments of the present invention, the problem of affecting the center of gravity of the entire vehicle if the auxiliary machine box is set too high can be avoided.

In some embodiments of the present invention, the transmission member extends along the straight line and is provided with the outer tube (which is preferably made of a steel component), so that the transmission member can be protected and the transmission member can be extended. The service life and tensile force of the first bracket and the second bracket can be reduced, and the deformation amount and stress value of the first bracket and the second bracket can be reduced.

1: Frame

11:Head tube

12:Supervisor

13: Side tube

131: Footrest section

132:Rising tube part

133:Rear frame part

14: closed tube

140: Accommodation space

141: Arm part

142:Connection Department

2: Drive box

21: Drive motor

22:Shift mechanism

221: Pressure plate clutch

2210:Spring

222:Shift shaft

23:Gear transmission mechanism

231:Output shaft

3: Auxiliary machine box

31:Shift motor

32: Delivery mechanism

321:Worm

322: Worm gear

323:Gear set

324:Turntable

4: Swingarm

51:Front wheel

52:Rear wheel

6: Motivate the organization

61: Delivery items

62: Rotating parts

63:Trigger rod

631: Missing slot

632:Butt part

64:Outer tube

7: Seat

71: Main driver's seat

8: Footrest

91:First bracket

92:Second bracket

D: Straight traveling direction

S: straight line

θ: included angle

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Fig. 1 is a side view illustrating the first embodiment of the electric vehicle of the present invention. For the sake of simplicity, Fig. 1 omits some components of the electric vehicle, such as faucets, casings, etc.; Figure 2 is a partially enlarged perspective view, illustrating that in the first embodiment, the electric vehicle includes a frame, a drive box, an actuating mechanism, and auxiliary machines. Box and other components, wherein the auxiliary machine box and the drive box are installed on the frame at intervals and located in front of the drive box; Figure 3 is a cross-sectional view illustrating the auxiliary machine box; Figure 4 It is a three-dimensional view illustrating the drive box and the actuator in the first gear state. mechanism, and the auxiliary machine box; Figure 5 is a partial cross-sectional view illustrating the drive box and the priming mechanism in the first gear state; Figure 6 is a perspective view illustrating the second gear state The driving box, the driving mechanism, and the auxiliary machine box; Figure 7 is a partial cross-sectional view illustrating the driving box and the driving mechanism in the second gear state; Figure 8 is a partially enlarged perspective view. The second embodiment of the electric vehicle of the present invention includes components such as a drive box, an actuating mechanism, and an auxiliary machine box. The transmission member of the actuating mechanism (for example, a steel cable, etc.) extends along a straight line; Figure 9 is A top view illustrating that in the second embodiment, the electric vehicle is switched to the first gear, where the angle between the straight line and the straight traveling direction of the electric vehicle is approximately 45°, but is not limited to this; Figure 10 is a partial cross-sectional view illustrating the drive box and the actuating mechanism in the first gear state; Figure 11 is a top view similar to Figure 9 illustrating that in the second embodiment, the electric vehicle is is switched to the second gear; and Figure 12 is a partial cross-sectional view illustrating the drive box and the actuating mechanism in the second gear state.

Referring to Figures 1 to 3, the first embodiment of the electric vehicle of the present invention includes a frame 1, a seat 7, a footrest 8, a drive box 2, an auxiliary machine box 3, and a rear swing arm. 4. A front wheel 51, a rear wheel 52, and a driving mechanism 6. Among them, in the first embodiment, the lowest point of the auxiliary machine box 3 is not higher than the height of the top surface of the drive box 2, so it can avoid affecting the entire vehicle if the auxiliary machine box 3 is set too high. The issue of focus.

In the first embodiment, the frame 1 includes a head tube 11, a main tube 12 extending downward from the head tube 11, two side tubes 13 extending rearward from the left and right sides of the main tube 12, and a The closed tube 14 is between the side tubes 13 . Each side tube 13 has a footrest tube part 131, a riser tube part 132 extending upward from the rear end of the footrest tube part 131, and a rear frame extending rearwardly from the rear end of the riser tube part 132. Department 133.

In this first embodiment, the closed tube 14 has two arm portions 141 extending upward from the side tubes 13 and toward the center of the electric vehicle body, and a connection connecting the arm portions 141 Department 142.

As shown in FIGS. 1 and 2 , the closed tube 14 is formed from the position of the footrest tube portions 131 close to the rising tube portions 132 and bulges upward toward the center of the electric vehicle body to define an accommodating space. The space 140 , in other words, the arm portions 141 and the connecting portion 142 jointly define the accommodation space 140 to accommodate the auxiliary machine box 3 .

As shown in FIG. 1 , the seat 7 is provided on the rear frame parts 133 of the vehicle frame 1 and is provided for users to sit on. The seat 7 includes a main driver's seat 71 for the driver to sit on. In the first embodiment, the drive box 2 is located below and behind the front edge of the main seat portion 71 .

The footrest portion 8 is provided on the footrest tube portions 131 of the vehicle frame 1 and is used for the driver to place his feet. In the first embodiment, the auxiliary machine box 3 is located below the rear end of the foot rest 8 .

Referring to FIGS. 1 to 5 , the drive box 2 is installed on the frame 1 and located behind the closed tube 14 , and includes a drive motor 21 , a shift mechanism 22 , and a gear transmission mechanism 23 . In the first embodiment, the shifting mechanism 22 has a pressure plate clutch 221 (shown in FIG. 5 ) and a shifting shaft 222 . Since the electric vehicle of the present invention uses the pressure plate clutch 221 to shift gears instead of using a centrifugal clutch, the electric vehicle of the present invention has a short shifting time and does not have the problem of too long shifting time.

In addition, the gear transmission mechanism 23 is provided with an output shaft 231 protruding to the outside of the drive box 2 . In the first embodiment, the front end of the rear rocker arm 4 is swingably supported on the drive box 2 with the output shaft 231 as the rotation center, and the rear end of the rear rocker arm 4 is used to support The rear wheel is 52.

The auxiliary machine box 3 is installed on the vehicle frame 1 at intervals from the drive box 2 and is located in front of the drive box 2 . In the first embodiment, the auxiliary machine box 3 is provided on the closed tube 14, is installed below the connecting portion 142 of the closed tube 14, and is located in the accommodating space 140.

As shown in Figures 3 and 4, the auxiliary machine box 3 includes a shift motor 31 and a The transmission mechanism 32 is used to reduce the rotation speed of the shift motor 31. In the first embodiment, the transmission mechanism 32 has a worm 321 disposed at the axis of the shift motor 31 and rotating coaxially with the shift motor 31 , a worm gear 322 meshing with the worm 321 , and a worm gear 322 meshed with the worm 321 . The worm gear 322 meshes with a gear set 323 , and a rotating disk 324 meshes with the gear set 323 .

As shown in FIGS. 1 , 4 , and 5 , the actuating mechanism 6 includes a transmission member 61 , a rotating member 62 , and an actuating rod 63 disposed between the rotating disk 324 and the shift shaft 222 . Since the tubes and wires on the electric vehicle are generally arranged vertically and horizontally along the frame 1, in the first embodiment, the transmission member 61 can be, for example, in the shape of an L as shown in the figure. The steel rope of shape. However, the first embodiment is not limited to this. In a variation, other types of actuating mechanisms (such as tie rods or worms, etc.) may be used to actuate the pressure plate clutch 221 to switch gears.

In the first embodiment, both ends of the transmission member 61 are fixed on the turntable 324 and the rotating member 62 respectively. The turntable 324 can rotate to a plurality of rotation positions respectively corresponding to the gears. When the turntable 324 rotates to one of the rotation positions, the transmission member 61 drives the rotating member 62 to rotate, and the rotating member 62 drives the actuating rod 63 to rotate, and then the actuating rod 63 drives the shift shaft 222 to translate. The pressure plate clutch 221 switches to the corresponding gear.

Referring to FIGS. 4 to 7 , in the first embodiment, the pressure plate clutch 221 can switch gears between two gears (ie, first gear and second gear). Figures 4 and 5 illustrate that when When switching to first gear, the relative positional relationship between the turntable 324, the transmission member 61, the rotating member 62, the actuating rod 63, the shift shaft 222, the pressure plate clutch 221 and other components is as shown in Figure 5 As shown in the figure, a notch 631 and a resisting portion 632 adjacent to the notch 631 are formed on the side of the driving rod 63 . The resisting portion 632 can push the shift shaft 222 and move a predetermined stroke toward the inside of the drive box 2 to compress the spring 2210 of the pressure plate clutch 221, thereby forming the first gear state.

Then, during the process of switching to the second gear, the turntable 324 rotates to the state shown in FIG. 6 , so that the transmission member 61 drives the rotating member 62 to rotate, and the rotating member 62 drives the actuating rod 63 to rotate to the state shown in FIG. 7 The rotational position allows the shift shaft 222 to move the predetermined stroke toward the outside of the drive box 2 due to the spring restoring force of the springs 2210, thereby completing the process of switching to the second gear.

Therefore, in the first embodiment, since the electric vehicle of the present invention uses the pressure plate clutch 221 to switch gears instead of using a centrifugal clutch, the electric vehicle of the present invention has a short gear shifting time and no shifting. The problem of too long shifting time is eliminated, and according to the requirement of automatic forced shifting or manual shifting, the shifting motor 31 can be made to rotate accordingly, and finally the pressure plate clutch 221 can be driven to switch to the required gear.

Referring to Figures 8 to 12, the main difference between the second embodiment of the electric vehicle of the present invention and the above-mentioned first embodiment is that the transmission member 61 in the first embodiment is roughly L-shaped, while in the second embodiment The transmission member 61 in the embodiment is roughly straight and extends along a straight line S. As shown in Figure 9, when looking down on the electric vehicle, the transmission mechanism The turntable 324 of 32, the transmission member 61 and the rotating member 62 of the driving mechanism 6 are arranged along the straight line S, as shown in Figure 9, wherein the straight line S is related to the straight traveling direction D of the electric vehicle. Non-parallel, for example, as shown in Figure 9, the angle θ between the straight line S and the straight traveling direction D is approximately 45°.

In addition, in the second embodiment, the electric vehicle also includes a first bracket 91 and a second bracket 92 respectively supporting both ends of the transmission member 61 , wherein the first bracket 91 can be fixed to the vehicle frame. , and the second bracket 92 can be fixed to the driving motor 21, but the second embodiment is not limited to this. In a variation, the first bracket 91 and the second bracket 92 can both be fixed. The first bracket 91 and the second bracket 92 can both be fixed to the drive motor 21 in another variation.

Furthermore, in the second embodiment, the driving mechanism 6 also includes a middle portion covering the transmission member 61 and between the turntable 324 of the transmission mechanism 32 and the rotating member 62 of the driving mechanism 6 There is an outer tube 64 between them, wherein the outer tube 64 can be a rubber tube or a rigid component (such as a steel pipe, etc.). It should be particularly emphasized that when the outer tube 64 is a rigid component, in addition to eliminating the stress on the first bracket 91 and the second bracket 92, it can also ensure the concentricity of both ends of the transmission member 61. The transmission member 61 is allowed to move smoothly without any obstruction.

Therefore, in the second embodiment, the transmission member 61 extends along the straight line S and is provided with the outer tube 64 (which is preferably made of steel pipe), so the transmission member 61 can be protected and extended. The service life and tensile force of the transmission member 61 can be reduced and the first branch The deformation amount and stress value of the frame 91 and the second bracket 92.

To sum up, the electric vehicle of the present invention has the following functions, so it can indeed achieve the purpose of the present invention:

The weight of the drive motor 21 can be reduced, and the maintainability of the drive box 2 and the auxiliary machine box 3 can be improved, and the shift motor 31 can be prevented from being affected by the high temperature of the operation of the drive motor 21, so it can reduce The failure rate of the shift motor 31 is thereby increased, thereby increasing the service life of the shift motor.

The drive box 2 and the auxiliary machine box 3 are both modular to improve the efficiency of manufacturing and maintenance.

According to the requirements of automatic forced shifting or manual shifting, the shift motor 31 can be rotated accordingly, and finally the pressure plate clutch 221 is driven to switch to the required gear, and the shift time of the pressure plate clutch 221 is It is short, so there is no problem like the centrifugal clutch shifting time is too long.

The auxiliary machine box 3 is modular to improve the efficiency of manufacturing and maintenance.

According to the requirements of automatic forced shifting or manual shifting, the shifting motor 31 can be rotated accordingly, and finally the pressure plate clutch 221 is driven to switch to the required gear, and the shifting time of the pressure plate clutch 221 is It is short, so there is no problem like the centrifugal clutch shifting time is too long.

The swing inertia of the rear rocker arm 4 can be reduced, thereby improving driving comfort.

The center of gravity of the entire electric vehicle can be optimized.

The center of gravity of the electric vehicle can be lowered and brought closer to the center of the vehicle to improve driving stability.

The auxiliary machine box 3 can be protected by the side tubes 13 and the closed tube 14 to prevent the auxiliary machine box 3 from being hit by foreign objects.

The auxiliary machine box 3 can be kept away from dust, sand, mud, water and other pollutants on the ground.

This can avoid the problem of affecting the dynamics of the entire vehicle if the auxiliary machine box 3 is set too high.

The transmission member 61 extends along the straight line S and is provided with the outer tube 64 (which is preferably made of steel pipe), so the transmission member 61 can be protected and the life and tension of the transmission member 61 can be extended, and The deformation amount and stress value of the first bracket 91 and the second bracket 92 can be reduced.

However, the above are only examples of the present invention and should not be used to limit the scope of the present invention. All simple equivalent changes and modifications made based on the patent scope of the present invention and the contents of the patent specification are still within the scope of the present invention. within the scope covered by the patent of this invention.

1: Frame

11:Head tube

12:Supervisor

13: Side tube

131: Footrest section

132:Rising tube part

133:Rear frame part

14: closed tube

2: Drive box

231:Output shaft

3: Auxiliary machine box

4: Swingarm

51:Front wheel

52:Rear wheel

7: Seat

71: Main driver's seat

8: Footrest

Claims (19)

An electric vehicle includes: a frame, including a head tube, a main tube extending downward from the head tube, two side tubes extending rearwards from the left and right sides of the main tube, and a frame disposed between the side tubes. Closed tube, each side tube has a footrest tube part, a riser tube part extending upward from the rear end of the footrest tube part, and a rear frame part extending rearwardly from the rear end of the riser tube part; a drive The box is installed on the frame and includes a drive motor and is located behind the closed tube; and an auxiliary machine box includes a shift motor and is installed on the frame spaced apart from the drive box. on the front of the drive box and located on the closed tube. The electric vehicle according to claim 1, wherein the drive box further includes a shift mechanism and a gear transmission mechanism, and the auxiliary machine box further includes a transmission mechanism for decelerating the rotational speed of the shift motor. . The electric vehicle as claimed in claim 2 further includes an actuating mechanism connected between the transmission mechanism of the auxiliary machine box and the shifting mechanism of the driving case, wherein the shifting mechanism has a pressure plate type Clutch, the transmission mechanism of the auxiliary machine box can activate the pressure plate clutch to switch gears between several gears through the activating mechanism. The electric vehicle as claimed in claim 2, wherein the transmission mechanism has a worm gear that is disposed on the axis of the shift motor and rotates coaxially with the shift motor, a worm gear meshed with the worm gear, and a worm gear meshed with the worm gear. A meshing gear set, and a turntable meshing with the gear set. The electric vehicle according to claim 4 further includes an actuating mechanism connected between the transmission mechanism of the auxiliary machine box and the shifting mechanism of the driving case, wherein the shifting mechanism has a pressure plate type A clutch and a shift shaft. The driving mechanism includes a transmission member, a rotating member, and an activation rod provided between the turntable and the shift shaft. Both ends of the transmission member are respectively fixed on the turntable and the shift shaft. On the rotating part, the rotating plate can rotate to a plurality of rotating positions respectively corresponding to several gears. When the rotating plate rotates to one of the rotating positions, the transmission member drives the rotating member to rotate, and the rotating member then drives the actuating rod. Rotate, and then the actuating lever causes the shift shaft to translate, so as to actuate the pressure plate clutch to switch to the corresponding gear. The electric vehicle according to claim 2 further includes a rear swing arm and a rear wheel supported on the rear end of the rear swing arm, wherein the gear transmission mechanism is provided with an output shaft protruding to the outside of the drive box, and the The front end of the rear rocker arm is swingably supported on the drive box with the output shaft as the rotation center. The electric vehicle as claimed in claim 1 also includes a seat provided on the frame for the user to sit on, wherein the seat includes a main driver's seat for the driver to sit on, and the drive box is Located below and behind the front edge of the main driver's seat. The electric vehicle according to claim 1 further includes a footrest provided on the frame for the driver to place his feet, wherein the auxiliary machine box is located below the rear end of the footrest. The electric vehicle as claimed in claim 1, wherein the closed tube has two arm portions respectively extending upward from the side tubes and towards the center of the body of the electric vehicle, and a connection connecting the arm portions. The auxiliary machine box is installed below the connecting part and is located in a volume jointly defined by the arm parts and the connecting part. placed in space. The electric vehicle as claimed in claim 1 or 9, wherein the lowest point of the auxiliary machine box is not higher than the height of the top surface of the drive box. The electric vehicle according to claim 2, further comprising an actuating mechanism connected between the transmission mechanism of the auxiliary machine box and the shifting mechanism of the drive box, wherein the transmission mechanism has a mechanism that can be used by the A turntable driven by a shift motor. The shift mechanism has a pressure plate clutch and a shift shaft. The actuating mechanism includes a transmission member, a rotating member, and an actuating rod disposed between the turntable and the shift shaft. , both ends of the transmission member are respectively fixed on the turntable and the rotating member. The turntable can rotate to several rotational positions corresponding to several gears. When the turntable rotates to one of the rotational positions, the transmission The rotating member drives the rotating member to rotate, and the rotating member drives the actuating rod to rotate, and then the actuating rod drives the shift shaft to translate, so as to actuate the pressure plate clutch to switch to the corresponding gear. The electric vehicle according to claim 11, wherein the transmission member of the driving mechanism is a steel cable. The electric vehicle as claimed in claim 11, wherein the transmission member of the actuating mechanism is generally L-shaped. The electric vehicle as claimed in claim 11, wherein the transmission member of the actuating mechanism is generally in a straight line. The electric vehicle as claimed in claim 14, wherein the transmission member extends along a straight line. When the electric vehicle is viewed from above, the turntable of the transmission mechanism, the transmission member and the rotating member of the driving mechanism extend along the straight line. Linear arrangement. The electric vehicle as described in claim 15, wherein the straight line is the same as the electric vehicle One of the straight driving directions is not parallel. The electric vehicle according to claim 16, wherein the angle between the straight line and the straight traveling direction is approximately 45°. The electric vehicle according to claim 11, wherein the driving mechanism further includes an outer tube covering the middle part of the transmission member and being between the turntable of the transmission mechanism and the rotating member of the driving mechanism. The electric vehicle as claimed in claim 18, wherein the outer tube is a rigid component.

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