Body frame and electric vehicle

Abstract

To provide a body frame and electric vehicle characterized in that: a body frame can be divided into plural modules and then manufactured; and the plural frame modules can be assembled in various forms and adapted to a use mode dependent on a situation.SOLUTION: A body frame 10 includes a main frame 11. sole wheel support frames 12 and 13 that are attachable to or detachable from the main frame 11 and each support one wheel 3 or 4, and at least one of two wheels support frames 13' and 15 that are attachable to or detachable from the main frame 11 and each support two wheels. The sole wheel support frames 12 and 13 or two wheels support frame 13' or 15 can be coupled to one side of the main frame 11. The sole wheel support frames 12 and 13 or two wheels support frame 13' or 15 can be coupled to the other side of the main frame. Thus, the main frame can be adapted to any of frame modes of a bicycle, tricycle, and four-wheeled vehicle.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a vehicle body frame and an electric vehicle that are capable of changing the configuration of the vehicle body. [Background technology]

[0002] Conventionally, a multi-function electric vehicle has been disclosed that travels by displacing a steering handle body between a boarding steering position where the driver sits on the seat and drives the vehicle, and a walking steering position where the driver turns around from the boarding steering position and drives the vehicle while walking (see Patent Document 1). The technology described in Patent Document 1 provides a detachable seat that can be removed and replaced with a cargo rack. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-225718 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to provide a body frame and an electric vehicle in which the body frame can be manufactured into a number of modules and the multiple frame modules can be assembled into various shapes, allowing for usage patterns suited to the situation. [Means for solving the problem]

[0005] The vehicle body frame of the present invention comprises: The mainframe and At least one of a single-wheel support frame that is detachable from the main frame and supports one wheel, and a two-wheel support frame that is detachable from the main frame and supports two wheels; Equipped with The main frame includes: The one-wheel support frame or the two-wheel support frame can be connected to one side, The one-wheel support frame or the two-wheel support frame can be connected to the other one, The frame will be either a two-wheeled, three-wheeled or four-wheeled vehicle. It is characterized by: Effect of the Invention

[0006] The vehicle body frame and electric vehicle of the present invention can be manufactured by dividing the vehicle body frame into a plurality of modules, and the plurality of frame modules can be assembled into various configurations, allowing for usage according to the situation. [Brief description of the drawings]

[0007] [Figure 1] 2 shows an example of a main frame module of the vehicle body frame of the present embodiment. [Diagram 2] 2 shows an example of a front frame module of the vehicle body frame of the present embodiment. [Diagram 3] 2 shows an example of a single-wheel support frame module of the vehicle body frame of the present embodiment. [Figure 4] 2 shows an example of a two-wheel support frame module of the vehicle body frame of the present embodiment. [Diagram 5] 2 shows another example of a two-wheel support frame module of the body frame 10 of the present embodiment. [Figure 6] 1 is a perspective view of an electric vehicle in the form of a two-wheeled vehicle according to a first embodiment. [Figure 7] FIG. 1 is a side view of a body frame of an electric vehicle in the form of a two-wheeled vehicle according to a first embodiment. [Figure 8] 1 is a top view of a body frame of an electric vehicle in the form of a two-wheeled vehicle according to a first embodiment. [Figure 9] 1 shows how a battery is stored in an electric vehicle in the form of a two-wheeled vehicle according to a first embodiment. [Figure 10] FIG. 11 is a perspective view of an electric vehicle in the form of a three-wheeled vehicle according to a second embodiment. [Figure 11]FIG. 11 is a side view of a body frame of an electric vehicle in the form of a three-wheeled vehicle according to a second embodiment. [Figure 12] FIG. 11 is a top view of a body frame of an electric vehicle in the form of a three-wheeled vehicle according to a second embodiment. [Figure 13] FIG. 11 is a top view of a body frame of an electric vehicle in the form of a three-wheeled vehicle according to a third embodiment. [Figure 14] FIG. 11 is a perspective view of an electric vehicle in the form of a four-wheeled vehicle according to a fourth embodiment. [Figure 15] FIG. 13 is a side view of a body frame of an electric vehicle in the form of a four-wheeled vehicle according to a fourth embodiment. [Figure 16] FIG. 13 is a top view of a body frame of an electric vehicle in the form of a four-wheeled vehicle according to a fourth embodiment. [Figure 17] FIG. 13 is a top view of a body frame of an electric vehicle in the form of a four-wheeled vehicle according to a fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] As described later, the vehicle body frame of this embodiment includes a main frame, a single-wheel support frame that supports one wheel, and a two-wheel support frame that supports two wheels. In the electric vehicle of this embodiment, the vehicle body frame is manufactured by dividing it into a plurality of modules, and the plurality of frame modules can be assembled into various forms, and the vehicle can be used in a form appropriate to the situation. In this embodiment, "front", "rear", "left", "right", "up" and "down" indicate directions as seen by a driver riding in the vehicle facing the vehicle travel direction when used as an electric vehicle. In addition, in the fourth and fifth embodiments, although there is no driver, the directions in the drawings are the same as those used in the first to third embodiments.

[0009] FIG. 1 shows an example of a main frame 11 of a vehicle body frame 10 of the present embodiment.

[0010] The main frame 11 has a lower frame 11a, a first main coupling portion 11b fixed to one end of the lower frame 11a, and a second main coupling portion 11c fixed to the other end of the lower frame 11a. The lower frame 11a and the first main coupling portion 11b, and the lower frame 11a and the second main coupling portion 11c are fixed by welding or the like.

[0011] The main frame 11 has two tubular or rod-like lower frames 11a with a circular or rectangular cross section arranged in parallel in the front-rear direction with a gap between them, a plate-like first main connecting portion 11b connecting one ends of the left and right lower frames 11a, and a plate-like second main connecting portion 11c connecting the other ends of the left and right lower frames 11a. The first main connecting portion 11b and the second main connecting portion 11c have a plurality of screw holes formed therein, and are connected to other connecting portions by bolts, pins, or the like inserted into the screw holes.

[0012] The two tubular lower frames 11a, the first main connector 11b, and the second main connector 11c form a rectangle or a square when viewed from above. Note that the first main connector 11b and the second main connector 11c may each be formed by separately fixing two plate-like members to one end and the other end of the left and right lower frames 11a.

[0013] As another example, the lower frame 11a may be a single tubular or rod-like member having a circular or rectangular cross section. When there is a single lower frame 11a, a central portion of the first main connection portion 11b is fixed to one end of the lower frame 11a, and the first main connection portion 11b extends in the left-right direction from the central portion, and a central portion of the second main connection portion 11c is fixed to the other end of the lower frame 11a, and the second main connection portion 11c extends in the left-right direction from the central portion. The single tubular lower frame 11a, the first main connection portion 11b, and the second main connection portion 11c are formed in an I-shape below the driver.

[0014] FIG. 2 shows an example of the front frame module 12 of the body frame 10 of the present embodiment.

[0015] The front frame module 12 included in the single-wheel support frame is attached to the first main connecting portion 11b of the main frame 11 and supports one wheel 31. The front frame module 12 has a head pipe 12a, down pipes 12b extending rearward and downward from the head pipe 12a to the left and right, and a front frame connecting portion 12c fixed to the rear ends of the left and right down pipes 12b. The head pipe 12a, the left and right down pipes 12b, and the front frame connecting portion 12c are fixed by welding or the like so as to form a triangle when viewed from above. Note that a reinforcing portion 12d connecting the left and right down pipes 12b may be fixed forward of the rear ends.

[0016] The head pipe 12a is a cylindrical pipe through which the steering shaft 51 of the handle unit 5 is rotatably inserted. The down pipe 12b is a tubular member with a circular or rectangular cross section, which extends rearward and downward from the head pipe 12a to the left and right, and the frame connecting portion 12c is fixed to the rear end thereof by welding or the like. The front frame connecting portion 12c is a plate-shaped member, which connects the left and right down pipes 12b at their rear ends. The front frame connecting portion 12c has a plurality of screw holes formed therein, and is connected to the first main connecting portion 11b of the main frame 11 by bolts or the like. The front frame connecting portion 12c may be formed by separately fixing two plate-shaped members to the rear ends of the left and right down pipes 12b.

[0017] FIG. 3 shows an example of the one-wheel support frame module 13 of the body frame 10 of the present embodiment.

[0018] The one-wheel support frame module 13 included in the one-wheel support frame is attached to the second main connecting portion 11c of the main frame 11 and supports one wheel 41. The one-wheel support frame module 13 has left and right side frames 13a, an end pipe 13b connecting the rear ends of the left and right side frames 13a, and a one-wheel support frame connecting portion 13c fixed to the front ends of the left and right side frames 13a. The left and right side frames 13a, the end pipe 13b, and the one-wheel support frame connecting portion 13c are fixed by welding or the like so as to form a rectangle or square when viewed from above.

[0019] The side frame 13a is a tubular member having a circular or rectangular cross section, and includes a lower portion 13a1 whose front end is fixed to the single-wheel support frame connecting portion 13c and extends rearward, an oblique side portion 13a2 which extends rearward and upward from the lower portion 13a1, and an upper portion 13a3 which extends rearward from the oblique side portion 13a2 and is fixed at its rear end to the end pipe 13b. An arm support portion 13d which connects the left and right side frames 13a and supports the swing arm 42 so that it can swing, and a suspension support portion 13e which connects the left and right side frames 13a above the arm support portion 13d and supports the rear suspension 43, are fixed to the oblique side portion 13a2. A reinforcing portion 13f which connects the left and right side frames 13a may be fixed to the upper portion 13a3.

[0020] The end pipe 13b is a tubular member with a circular or rectangular cross section, and connects the left and right side frames 13a at their rear ends. The single-wheel support frame connecting portion 13c is a plate-shaped member, and connects the left and right side frames 13a at their front ends. The single-wheel support frame connecting portion 13c is connected to the second main connecting portion 11c of the main frame 11 by bolts or the like. The single-wheel support frame connecting portion 13c may be formed by separately fixing two plate-shaped members to the front ends of the left and right side frames 13a.

[0021] 4 shows an example of the two-wheel support frame module 15 of the vehicle body frame 10 of this embodiment. The two-wheel support frame module 15 is connected to the main frame 11 via the auxiliary frame module 14. The two-wheel support frame module 15 is wider in the left-right direction than the one-wheel support frame module 13.

[0022] The auxiliary frame module 14 included in the two-wheel support frame has two tubular auxiliary side frames 14a with a circular or rectangular cross section arranged so that the width expands left and right toward the rear, a plate-shaped first auxiliary connecting portion 14b connecting one end of the left and right auxiliary side frames 14a, a plate-shaped second auxiliary connecting portion 14c connecting the other end of the left and right auxiliary side frames 14a, and a seat support frame 14d connecting the left and right auxiliary side frames 14a between the first auxiliary connecting portion 14b and the second auxiliary connecting portion 14c and supporting the seat 6. The two tubular auxiliary side frames 14a, the first auxiliary connecting portion 14b, and the second auxiliary connecting portion 14c form a trapezoid when viewed from above. The first auxiliary connecting portion 14b and the second auxiliary connecting portion 14c may each be formed by separately fixing two plate-shaped members to one end and the other end of the left and right auxiliary side frames 14a.

[0023] The two-wheel support frame module 15 included in the two-wheel support frame is attached to the second auxiliary connecting portion 14c of the auxiliary frame module 14 and supports the second wheel portion 4. The two-wheel support frame module 15 has left and right side pipes 15a, an end pipe 15b connecting the rear ends of the left and right side pipes 15a, and a two-wheel support frame connecting portion 15c fixed to the front ends of the left and right side pipes 15a. The left and right side pipes 15a, the end pipes 15b, and the two-wheel support frame connecting portion 15c are fixed by welding or the like so as to form a rectangle or square when viewed from above.

[0024] The side pipe 15a is a tubular member having a circular or rectangular cross section, and includes a lower part 15a1 whose front end is fixed to the two-wheel support frame connecting part 15c and extends rearward, an oblique side part 15a2 which extends rearward and upward from the lower part 15a1, and an upper part 15a3 which extends rearward from the oblique side part 15a2 and is fixed at its rear end to the end pipe 15b. An arm support part 15d which connects the left and right side pipes 15a and supports the swing arm 42 so that it can swing, and a suspension support part 15e which connects the left and right side pipes 15a above the arm support part 15d and supports the rear suspension 43, are fixed to the oblique side part 15a2. A reinforcing part 15f which connects the left and right side pipes 15a may be fixed to the upper part 15a2.

[0025] The end pipe 15b is a tubular member having a circular or rectangular cross section, and connects the left and right side pipes 15a at their rear ends. The two-wheel support frame connecting portion 15c is a plate-shaped member, and connects the left and right side pipes 15a at their front ends. The two-wheel support frame connecting portion 15c is connected to the second auxiliary connecting portion 14c of the auxiliary frame module 14 by bolts or the like. The two-wheel support frame connecting portion 15c may be formed by separately fixing two plate-shaped members to the front ends of the left and right side pipes 15a.

[0026] Fig. 5 shows another example of the two-wheel support frame module 15 of the body frame 10 of this embodiment. The two-wheel support frame module 15 shown in Fig. 5 is configured by arranging two one-wheel support frame modules 13 in the left-right width direction and connecting them to a wide auxiliary frame module 16. The two-wheel support frame module 15 is connected to the main frame 11 via the wide auxiliary frame module 16. The two-wheel support frame module 15 shown in Fig. 5 is wider left-right than the two-wheel support frame module 15 shown in Fig. 4.

[0027] The wide auxiliary frame module 16 included in the two-wheel support frame has the same configuration as the auxiliary frame module 14 shown in Fig. 4, but the width of the second wide auxiliary connecting portion 16c is wider than the width of the second auxiliary connecting portion 14c. The two tubular wide auxiliary side frames 16a, the first wide auxiliary connecting portion 16b, and the second wide auxiliary connecting portion 16c form a trapezoid when viewed from above. Note that the first wide auxiliary connecting portion 16b and the second wide auxiliary connecting portion 16c may each be formed by separately fixing two plate-shaped members to one end and the other end of the left and right wide auxiliary side frames 16a.

[0028] To connect the wide auxiliary frame module 16 to the main frame 11, the second main connection portion 11c of the main frame 11 and the first wide auxiliary connection portion 16b of the wide auxiliary frame module 16 may be connected by a bolt or the like. The first wide auxiliary connection portion 16b may be formed by separately fixing two plate-shaped members to the front ends of the left and right wide auxiliary side pipes 16a.

[0029] The one-wheel support frame connecting portion 13c of the two one-wheel support frame modules 13 constituting the two-wheel support frame module 15 may be connected to the second wide auxiliary connecting portion 16c of the wide auxiliary frame module 16 by a bolt or the like. A joint 13g is provided between the rear ends of the two one-wheel support frame modules 13 to connect the two one-wheel support frame modules 13. Note that the two one-wheel support frame modules 13 may directly connect the adjacent side frames 13a without using the joint 13g.

[0030] In the electric vehicle 1 of this embodiment, these frame modules 11, 12, 13, 14, 15, and 16 can be combined to form the vehicle body frame 10 in various forms, and can be used in a manner suited to the situation.

[0031] Fig. 6 is a perspective view of the electric vehicle 1 in the form of a two-wheeled vehicle of the first embodiment. Fig. 7 is a side view of the body frame 10 of the electric vehicle 1 in the form of a two-wheeled vehicle of the first embodiment. Fig. 8 shows a top view of the body frame 10 of the electric vehicle 1 in the form of a two-wheeled vehicle of the first embodiment. Note that in the first embodiment, "front", "rear", "left", "right", "up" and "down" refer to directions as seen by a driver riding in the vehicle facing in the direction of travel of the vehicle.

[0032] The electric vehicle 1 of the first embodiment is in the form of a two-wheeled vehicle. The electric vehicle 1 includes a body frame 10, a cowl 2, a first wheel unit 3, a second wheel unit 4, a handle unit 5, and a seat unit 6.

[0033] The body frame 10 of the electric vehicle 1 of the first embodiment has a main frame 11, a front frame module 12 included in a single-wheel support frame connected to the main frame 11, and a single-wheel support frame module 13 connected to the main frame 11 on the opposite side of the main frame 11 to the front frame module 12. The main frame 11, the front frame module 12, and the single-wheel support frame module 13 configure the body frame 10 of the electric vehicle 1 of the first embodiment.

[0034] The body frame 10 of the electric vehicle 1 of the first embodiment connects the front frame connection portion 12c of the front frame module 12 to the first main connection portion 11b of the main frame 11, and connects the single wheel support frame connection portion 13c of the single wheel support frame module 13 to the second main connection portion 11c of the main frame 11.

[0035] The electric vehicle 1 of the first embodiment includes a cowl 2 that covers the vehicle body frame 10. The cowl 2 has a main cowl 21 that covers the main frame 11, a first cowl 22 that covers the front frame module 12 as a first frame portion, and a second cowl 23 that covers the one-wheel support frame module 13 as a second frame portion. The second cowl 23 includes a hypotenuse cowl 23a that covers a part of the one-wheel support frame module 13, such as a lower portion 13a1 and an oblique side portion 13a2 of the side frame 13a, the one-wheel support frame connecting portion 13c, the arm support portion 13d, and the suspension support portion 13e, and an end cowl 23b that covers an upper portion 13a3 and the end pipe 13b of the side frame 13a.

[0036] The electric vehicle 1 of the first embodiment includes a first wheel section 3. The first wheel section 3 includes a first wheel 31, a front fork 32 that rotatably supports the first wheel 31, and a bracket 33 that connects the front fork 32 to a steering shaft 51. The first wheel 31 is a rechargeable in-wheel motor and constitutes the front wheel 31.

[0037] The electric vehicle 1 of the first embodiment includes a second wheel section 4. The second wheel section 4 includes a second wheel 41, a swing arm 42 that rotatably supports the second wheel 41, and a rear suspension 43 that supports the swing arm 42. The second wheel 41 is a rechargeable in-wheel motor and constitutes the rear wheel 41.

[0038] The electric vehicle 1 of the first embodiment includes a handle unit 5. The handle unit 5 includes a steering shaft 51 and a handle bar 52. The steering shaft 51 is rotatably inserted into the head pipe 12a, and is connected at its upper end to the handle bar 52 and at its lower end to a bracket 33 that supports the front fork 32. The handle bar 52 is attached to the steering shaft 51 and extends to the left and right. By rotating the handle bar 52, the steering shaft 51, the bracket 33, the front fork 32, and the first wheel 31 can be rotated. An accelerator grip and a brake (not shown) are attached to the handle bar 52.

[0039] The electric vehicle 1 of the first embodiment includes a seat portion 6. The seat portion 6 includes a seat stay 61 and a saddle 62. The seat stay 61 is attached to the suspension support portion 13e or the reinforcing portion 13f. The seat stay 61 extends upward from the suspension support portion 13e or the reinforcing portion 13f, and the saddle 62 is attached to the upper end.

[0040] At least one of the arm support 13d or the suspension support 13e supports a control unit 8. The control unit 8 controls the rotation of the first wheel 31 and the second wheel 41 by operating an accelerator grip or a brake (not shown). The control unit 8 may also control the balance of the electric vehicle 1 by using, for example, an acceleration sensor or the like to prevent the electric vehicle 1 from falling over.

[0041] FIG. 9 shows how the battery 7 is stored in the electric vehicle 1 in the form of a two-wheeled vehicle according to the first embodiment.

[0042] The electric vehicle 1 is equipped with a battery 7 that drives the first wheel 31 and the second wheel 41. The battery 7 is equipped in a first battery storage section 21b in the main cowl 21 below the main frame 11, and in a second battery storage section 23d in the end cowl 23b above the second wheel 41. The first battery storage section 21b is supported by the left and right lower frames 11a, and the second battery storage section 23d is supported by the left and right side frames 13a.

[0043] The main cowl 21 has a step 21a on which the rider places his / her feet, and the step 21a is configured to be rotatable upward around its front end as an axis. The battery 7 has a terminal (not shown) at its front end, and when the battery 7 is stored in the first battery storage section 21b, the terminal is automatically connected to drive the electric vehicle 1 and operate the electrical components.

[0044] The end cowl 23b has an opening / closing lid 23c at its rear end, and the opening / closing lid 23c is configured to be rotatable upward around its upper end as an axis. The battery 7 has terminals (not shown) at its front end, and when the battery 7 is stored in the second battery storage section 23d, the terminals are automatically connected to drive the electric vehicle 1 and operate the electrical components.

[0045] The batteries 7 include a small battery 7a and a large battery 7b, and the large battery 7b has the same height and depth as the small battery 7a and twice the width. Therefore, the first battery storage section 21b and the second battery storage section 23d may both be equipped with two small batteries 7a arranged side by side, or one large battery 7b. The batteries 7 do not need to fill the entire space of the first battery storage section 21b and the second battery storage section 23d. For example, one small battery 7a may be equipped in the first battery storage section 21b, and two small batteries 7a may be equipped in the second battery storage section 23d.

[0046] In the electric vehicle 1 in the form of a two-wheeled vehicle of the first embodiment, a rider sits on the seat 6 with his / her feet on the step 21a and rotates the grip of the handlebar 52, whereby power is supplied from the battery 7, the first wheel 31 and the second wheel 41 rotate, and the vehicle travels. The electric vehicle 1 in the first embodiment can turn left and right by operating the handlebar 5. The electric vehicle 1 in the first embodiment can be stopped by operating the brake. The electric vehicle 1 in the form of a two-wheeled vehicle of the first embodiment may use an automatic driving technology or a wireless driving technology controlled by a control unit 8 connected to a network.

[0047] In this way, the electric vehicle 1 of the first embodiment can be used in the form of a two-wheeled vehicle by connecting the front frame module 12 to the front of the main frame 11 and connecting the one-wheel support frame module 13 to the rear of the main frame 11.

[0048] Fig. 10 is a perspective view of an electric vehicle 1 in the form of a tricycle according to the second embodiment. Fig. 11 is a side view of a frame of the electric vehicle in the form of a tricycle according to the second embodiment. Fig. 12 is a top view of the frame of the electric vehicle in the form of a tricycle according to the second embodiment.

[0049] The electric vehicle 1 of the second embodiment is in the form of a three-wheeled vehicle. The electric vehicle 1 includes a body frame 10, a cowl 2, a first wheel unit 3, a second wheel unit 4, a handle unit 5, and a seat unit 6.

[0050] The body frame 10 of the electric vehicle 1 of the second embodiment has a main frame 11, a front frame module 12 included in a one-wheel support frame connected to the main frame 11, an auxiliary frame module 14 included in a two-wheel support frame connected to the main frame 11 on the opposite side of the main frame 11 from the front frame module 12, and a two-wheel support frame module 15 connected to the auxiliary frame module 14. The main frame 11, the front frame module 12 included in the one-wheel support frame, and the auxiliary frame module 14 and two-wheel support frame module 15 included in the two-wheel support frame constitute the body frame 10 of the electric vehicle 1 of the second embodiment. The auxiliary frame module 14 and the two-wheel support frame module 15 constitute the two-wheel support frame.

[0051] The body frame 10 of the electric vehicle 1 of the second embodiment connects a front frame connecting portion 12c of a front frame module 12 included in the one-wheel support frame to a first main connecting portion 11b of the main frame 11. Also, the body frame 10 of the electric vehicle 1 of the second embodiment connects a first auxiliary connecting portion 14b of an auxiliary frame module 14 included in the two-wheel support frame to a second main connecting portion 11c of the main frame 11. Furthermore, a two-wheel support frame connecting portion 15c of a two-wheel support frame module 15 is connected to a second auxiliary connecting portion 14c of the auxiliary frame module 14 included in the two-wheel support frame.

[0052] The electric vehicle 1 of the second embodiment includes a cowl 2 that covers the body frame 10. The cowl 2 has a main cowl 21 that covers the main frame 11, a first cowl 22 that covers the front frame module 12, and a second cowl 23 that covers the two-wheel support frame module 15. The main cowl 21 and the first cowl 22 of the second embodiment are similar to the main cowl 21 and the first cowl 22 of the first embodiment.

[0053] The second cowl 23 of the second embodiment includes a hypotenuse cowl 23a that covers the auxiliary frame module 14 and a part of the two-wheel support frame module 15, such as the lower part 15a1 and the oblique part 15a2 of the side frame 15a, the two-wheel support frame connecting part 15c, the arm support part 15d and the suspension support part 15e, and an end cowl 23b that covers the upper part 15a3 and the end pipe 15b of the side frame 15a. The second cowl 23 of the second embodiment is wider in the left-right direction than the second cowl 23 of the first embodiment.

[0054] The first wheel portion 3 and the handle portion 5 of the electric vehicle 1 of the second embodiment are similar to the first wheel portion 3 and the handle portion 5 of the electric vehicle 1 of the first embodiment.

[0055] The electric vehicle 1 of the second embodiment includes a second wheel section 4. The second wheel section 4 includes two second wheels 41, a swing arm 42 that rotatably supports the two second wheels 41, and a rear suspension 43 that supports the swing arm 42. The two second wheels 41 are rechargeable in-wheel motors and constitute the rear wheels.

[0056] The electric vehicle 1 of the second embodiment includes a seat 6. The seat 6 includes a seat stay 61 and a saddle 62. The seat stay 61 is attached to the seat support frame 14d. The seat stay 61 extends upward from the seat support frame 14d, and the saddle 62 is attached to the upper end. By installing the seat 6 in this position, the electric vehicle 1 of the first embodiment and the electric vehicle 1 of the second embodiment are arranged so that the distance from the handlebar 52 of the handle unit 5 to the saddle 62 of the seat 6 is the same or approximately the same.

[0057] The electric vehicle 1 of the second embodiment is equipped with a battery 7 that drives the first wheel 31 and the second wheel 41. The electric vehicle 1 of the second embodiment can be equipped with three small batteries 7a arranged in the left-right width direction in the second battery storage section 23d. Alternatively, one small battery 7a and one large battery 7b may be equipped in the left-right width direction. The storage structure and connection structure of the other batteries 7 are the same as those of the first embodiment.

[0058] At least one of the arm support 15d or the suspension support 15e supports a control unit 8. The control unit 8 controls the rotation of the first wheel 31 and the second wheel 41 by operating an accelerator grip or a brake (not shown). The control unit 8 may also control the balance of the electric vehicle 1 by using, for example, an acceleration sensor or the like to prevent the electric vehicle 1 from falling over.

[0059] In the electric vehicle 1 in the form of a tricycle of the second embodiment, the rider sits on the seat 6 with his / her feet on the step 21a and rotates the grip of the handlebar 52, which supplies power from the battery 7, causing the first wheel 31 and the second wheel 41 to rotate and travel. The electric vehicle 1 in the second embodiment can also turn left and right by operating the handlebar 5. Furthermore, the electric vehicle 1 in the second embodiment can be stopped by operating the brake. The electric vehicle 1 in the form of a tricycle of the second embodiment may use automatic driving technology or wireless driving technology controlled by a control unit 8 connected to a network.

[0060] In this way, the electric vehicle 1 of the second embodiment can be used in the form of a three-wheeled vehicle. By adopting the three-wheeled vehicle form, stability is improved. Also, the left and right width of the second cowl 23 is wider than that of a two-wheeled vehicle, making it possible to carry more luggage. Furthermore, more batteries 7 can be mounted, making it possible to extend the travel distance.

[0061] FIG. 13 shows a top view of a frame of an electric vehicle 1 in the form of a three-wheeled vehicle according to the third embodiment.

[0062] The electric vehicle 1 of the third embodiment is in the form of a three-wheeled vehicle. The electric vehicle 1 includes a body frame 10, a cowl 2, a first wheel unit 3, a second wheel unit 4, a handle unit 5, and a seat unit 6.

[0063] The body frame 10 of the electric vehicle 1 of the third embodiment has a main frame 11, a front frame module 12 included in a one-wheel support frame connected to the main frame 11, a wide auxiliary frame module 16 included in a two-wheel support frame connected to the main frame 11 on the opposite side of the main frame 11 to the front frame module 12, and two one-wheel support frame modules 13 included in the two-wheel support frame connected to the wide auxiliary frame module 16. The main frame 11, the front frame module 12 included in the one-wheel support frame, the auxiliary frame module 14 included in the two-wheel support frame, and the two one-wheel support frame modules 13 constitute the body frame 10 of the electric vehicle 1 of the third embodiment. The wide auxiliary frame module 16 and the two one-wheel support frame modules 13 constitute a two-wheel support frame. The electric vehicle 1 of the third embodiment uses two one-wheel support frame modules 13 for a two-wheel vehicle shown in the first embodiment lined up in the left-right width direction and used as a three-wheel vehicle.

[0064] The body frame 10 of the electric vehicle 1 of the third embodiment connects the front frame connecting portion 12c of the front frame module 12 included in the one-wheel support frame to the first main connecting portion 11b of the main frame 11. Also, the body frame 10 of the electric vehicle 1 of the third embodiment connects the first wide auxiliary connecting portion 16b of the wide auxiliary frame module 16 included in the two-wheel support frame to the second main connecting portion 11c of the main frame 11. Furthermore, the one-wheel support frame connecting portions 13c of the two one-wheel support frame modules 13 are connected to the second wide auxiliary connecting portions 16c of the wide auxiliary frame module 16 included in the two-wheel support frame.

[0065] A joint 13g is provided between the rear ends of the two single-wheel support frame modules 13 to connect the two single-wheel support frame modules 13. The side frame 13a between the two single-wheel support frame modules 13 may be directly connected.

[0066] The single-wheel support frame module 13 of the third embodiment is arranged in parallel in the left-right width direction, and is therefore wider left-right than the single-wheel support frame module 13 of the first embodiment and the two-wheel support frame module 15 of the second embodiment. The two single-wheel support frame modules 13 of the third embodiment are mounted with four small batteries 7a, two small batteries 7a and one large battery 7b, or two large batteries 7b arranged side by side.

[0067] In such an electric vehicle 1 in the form of a tricycle of the third embodiment, a rider sits on the seat 6 with his / her feet on the step 21a and rotates the grip of the handlebar 52, whereby power is supplied from the battery 7, the first wheel 31 and the second wheel 41 rotate, and the vehicle travels. The electric vehicle 1 of the third embodiment can also turn left and right by operating the handlebar 5. Furthermore, the electric vehicle 1 of the third embodiment can be stopped by operating the brake. The electric vehicle 1 in the form of a tricycle of the third embodiment may use automatic driving technology or wireless driving technology controlled by a control unit 8 connected to a network.

[0068] In this way, the electric vehicle 1 of the third embodiment can be used in the form of a three-wheeled vehicle. The three-wheeled vehicle configuration improves stability. Also, the left-right width of the second cowl 23 is wider than that of a two-wheeled vehicle, making it possible to transport more luggage. Furthermore, more batteries 7 can be mounted, making it possible to extend the mileage. Also, the one-wheel support frame modules 13 are arranged in parallel in the left-right width direction to form a two-wheel support frame, and therefore the one-wheel support frame modules 13 of a common structure are used, making it possible to reduce costs.

[0069] Fig. 14 is a perspective view of an electric vehicle 11 in the form of a four-wheeled vehicle of the fourth embodiment. Fig. 15 is a side view of a body frame 10 of the electric vehicle 1 in the form of a four-wheeled vehicle of the fourth embodiment. Fig. 16 shows a top view of the body frame 10 of the electric vehicle 1 in the form of a four-wheeled vehicle of the fourth embodiment.

[0070] The electric vehicle 1 of the fourth embodiment is a four-wheeled vehicle. The electric vehicle 1 includes a body frame 10, a cowl 2, a first wheel unit 3, and a second wheel unit 4.

[0071] The body frame 10 of the electric vehicle 1 of the fourth embodiment has a main frame 11, a first auxiliary frame module 141 as a two-wheel support frame connected to the main frame 11, a first two-wheel support frame module 151 as a two-wheel support frame connected to the first auxiliary frame module 141, a second auxiliary frame module 142 as a two-wheel support frame connected to the main frame 11 on the opposite side of the main frame 11 to the first auxiliary frame module 141, and a second two-wheel support frame module 152 as a two-wheel support frame connected to the second auxiliary frame module 142.

[0072] The main frame 11, the first auxiliary frame module 141, the first two-wheel support frame module 151, and the second auxiliary frame module 142 and the second two-wheel support frame module 152 configure the body frame 10 of the electric vehicle 1 of the fourth embodiment.

[0073] The first auxiliary frame module 141 and the second auxiliary frame module 142 of the fourth embodiment have the same structure as the auxiliary frame module 14 of the second embodiment, and the first two-wheel support frame module 151 and the second two-wheel support frame module 152 have the same structure as the two-wheel support frame module 15 of the second embodiment, so their explanations are omitted. Note that a member corresponding to the seat support frame 14d of the auxiliary frame module 14 does not need to be installed.

[0074] The first two-wheel support frame module 151 of the fourth embodiment is attached to the first auxiliary frame module 141 and supports a first wheel section 3 having two first wheels 31. The second two-wheel support frame module 152 of the fourth embodiment is attached to the second auxiliary frame module 142 and supports a second wheel section 4 having two second wheels 41.

[0075] The body frame 10 of the electric vehicle 1 of the fourth embodiment connects the first auxiliary frame connecting portion 141b of the first auxiliary frame module 141 included in the two-wheel support frame to the first main connecting portion 11b of the main frame 11. Also, the body frame 10 of the electric vehicle 1 of the fourth embodiment connects the first auxiliary connecting portion 142b of the second auxiliary frame module 142 included in the two-wheel support frame to the second main connecting portion 11c of the main frame 11. Furthermore, the two-wheel support frame connecting portion 151c of the first two-wheel support frame module 151 is connected to the second auxiliary connecting portion 141c of the first auxiliary frame module 141 included in the two-wheel support frame. Also, the two-wheel support frame connecting portion 152c of the second two-wheel support frame module 152 is connected to the second auxiliary connecting portion 142c of the second auxiliary frame module 142 included in the two-wheel support frame.

[0076] The electric vehicle 1 of the fourth embodiment includes a cowl 2 that covers the body frame 10. The cowl 2 has a main cowl 21 that covers the main frame 11, a first cowl 22 that covers the first two-wheel support frame module 151, a second cowl 23 that covers the second two-wheel support frame module 152, and a third cowl 24 that rises from the left and right sides of the main cowl 21 and is connected to the first cowl 22 and the second cowl 23. The first cowl 22 and the second cowl 23 of the fourth embodiment have the same structure.

[0077] The body frame 10 of the fourth embodiment may form an upper frame (not shown) that connects the upper portion 151a3 of the first two-wheel support frame module 151 and the upper portion 152a3 of the second two-wheel support frame module 152. In that case, it is preferable that the third cowl 24 is formed so as to cover the upper frame.

[0078] The electric vehicle 1 of the fourth embodiment includes a first wheel unit 3 and a second wheel unit 4. The first wheel unit 3 and the second wheel unit 4 have the same structure. The first wheel 31 and the second wheel 41 are rechargeable in-wheel motors.

[0079] The electric vehicle 1 of the fourth embodiment is equipped with a battery 7 that drives the first wheel 31 and the second wheel 41. The electric vehicle 1 of the fourth embodiment can be equipped with two small batteries 7a or one large battery 7b in the left-right width direction in the first battery storage section 21b in the main cowl 21. Three small batteries 7a can be installed side by side in the left-right width direction in each of the second battery storage sections 23d above the first wheel 31 and the second wheel 41. Alternatively, one small battery 7a and one large battery 7b may be installed in the left-right width direction. The storage structure and connection structure of the other batteries 7 are the same as those of the second embodiment. Therefore, a total of seven small batteries can be installed.

[0080] Such an electric vehicle 1 in the form of a four-wheeled vehicle of the fourth embodiment is operated fully automatically without a driver. In response to a command from the control unit 8, power is supplied from the battery 7, and the first wheel 31 and the second wheel 41 rotate to travel. Furthermore, the electric vehicle 1 in the fourth embodiment can turn left and right by the control unit 8 controlling the number of rotations of the first wheel 31 and the second wheel 41. Furthermore, the electric vehicle 1 in the fourth embodiment stops when the control unit 8 issues a brake command. Note that the electric vehicle 1 in the form of a four-wheeled vehicle of the fourth embodiment may use an automatic driving technology controlled by the control unit 8 connected to a network, or a wireless driving technology.

[0081] In this way, the electric vehicle 1 of the fourth embodiment can be used in the form of a four-wheeled vehicle. By adopting the form of a four-wheeled vehicle, stability is improved. In addition, since a driver is not required, more luggage can be transported. Furthermore, more batteries 7 can be mounted, and the driving distance can be extended.

[0082] FIG. 17 shows a top view of the body frame 10 of an electric vehicle 1 in the form of a four-wheeled vehicle according to the fifth embodiment.

[0083] The electric vehicle 1 of the fifth embodiment supports two first wheel sections 3 using a first two-wheel support frame module 151, which is formed by arranging two single-wheel support frame modules 13 shown in the third embodiment in the left-right width direction, as a two-wheel support frame, and supports two second wheel sections 4 using a second two-wheel support frame module 152, which is also formed by arranging two single-wheel support frame modules 13 shown in the third embodiment in the left-right width direction, and is used as a four-wheel vehicle.

[0084] In the body frame 10 of the electric vehicle 1 of the fifth embodiment, a first wide auxiliary frame connecting portion 161b of a first wide auxiliary frame module 161 included in the two-wheel support frame is connected to a first main connecting portion 11b of the main frame 11. Also, one-wheel support frame connecting portions 13c of two one-wheel support frame modules 13 are connected to second wide auxiliary connecting portions 16c of the first wide auxiliary frame module 161 included in the two-wheel support frame.

[0085] Furthermore, in the body frame 10 of the electric vehicle 1 of the fifth embodiment, the first wide auxiliary connecting portion 162b of the second wide auxiliary frame module 162 included in the two-wheel support frame is connected to the second main connecting portion 11c of the main frame 11. Furthermore, the single-wheel support frame connecting portions 13c of the two single-wheel support frame modules 13 are connected to the second wide auxiliary connecting portion 162c of the second wide auxiliary frame module 162 included in the two-wheel support frame.

[0086] The cowl 2 of the electric vehicle 1 of the fifth embodiment has a structure similar to that of the cowl 2 of the fourth embodiment, but the width of the first cowl 22 and the second cowl 23 is wider than that of the fourth embodiment. The body frame 10 of the fifth embodiment may form an upper frame (not shown) as in the fourth embodiment. In that case, it is preferable that the third cowl 24 is formed so as to cover the upper frame. The electric vehicle 1 of the fifth embodiment includes a first wheel section 3 and a second wheel section 4. The first wheel section 3 and the second wheel section 4 have a similar structure. The first wheel 31 and the second wheel 41 are rechargeable in-wheel motors.

[0087] The electric vehicle 1 of the fifth embodiment is equipped with a battery 7 that drives the first wheel 31 and the second wheel 41. The electric vehicle 1 of the fifth embodiment can be equipped with two small batteries 7a or one large battery 7b in the left-right width direction in the first battery storage section 21b in the main cowl 21. Two small batteries 7a each can be installed side by side in the left-right width direction in the second battery storage section 23d above the first wheel 31 and the second wheel 41. Alternatively, one large battery 7b may be installed in the left-right width direction. The storage structure and connection structure of the other batteries 7 are the same as those of the third embodiment. Therefore, a total of ten small batteries can be installed.

[0088] Such an electric vehicle 1 in the form of a four-wheeled vehicle of the fifth embodiment is operated fully automatically without a driver. In response to a command from the control unit 8, power is supplied from the battery 7, and the first wheel 31 and the second wheel 41 rotate to travel. Furthermore, the electric vehicle 1 in the fifth embodiment can turn left and right by the control unit 8 controlling the number of rotations of the first wheel 31 and the second wheel 41. Furthermore, the electric vehicle 1 in the fifth embodiment stops when the control unit 8 issues a brake command. Note that the electric vehicle 1 in the form of a four-wheeled vehicle of the fifth embodiment may use an automatic driving technology controlled by the control unit 8 connected to a network, or a wireless driving technology.

[0089] In this way, the electric vehicle 1 of the fifth embodiment can be used in the form of a four-wheeled vehicle. By adopting the form of a four-wheeled vehicle, stability is improved. In addition, since a driver is not required, more luggage can be transported. Furthermore, many batteries 7 that can be easily replaced can be mounted, and the mileage can be extended. In addition, the one-wheel support frame module 13 is arranged in parallel in two in the left-right width direction to form a two-wheel support frame, and therefore the one-wheel support frame module 13 having a common structure is used, and therefore costs can be reduced.

[0090] As described above, the vehicle body frame 10 of this embodiment includes the main frame 11, the one-wheel support frame 12, 13 that is detachable from the main frame 11 and supports one wheel 31, 41, and at least one of the two-wheel support frames 14, 15, 16 that is detachable from the main frame 11 and supports two wheels, and the main frame 11 can be connected to the one-wheel support frame 12, 13 or the two-wheel support frame 14, 15, 16 on one side and to the one-wheel support frame 12, 13 or the two-wheel support frame 14, 15, 16 on the other side, forming one of the frame forms of a two-wheel vehicle, a three-wheel vehicle, or a four-wheel vehicle. Therefore, according to the vehicle body frame 10 of this embodiment, the vehicle body frame 10 can be manufactured by dividing it into a plurality of modules, and the plurality of frame modules 11, 12, 13, 14, 15, 16 can be assembled into various forms, and can be used in a form according to the situation.

[0091] In addition, in the body frame 10 of this embodiment, the two-wheel support frames 15, 151, 152 are formed by arranging and connecting the single-wheel support frames 13 side by side. Therefore, according to the body frame 10 of this embodiment, the single-wheel support frame module 13 of a common structure is used to form the two-wheel support frame, so that costs can be reduced.

[0092] In the body frame 10 of this embodiment, the single-wheel support frame has a front frame module 12 that supports the front wheel 31 and a single-wheel support frame module 13 that supports the rear wheel 41, and is in the frame form of a two-wheel vehicle. Therefore, a two-wheel vehicle can be formed by using the body frame 10 of this embodiment.

[0093] In addition, in the body frame 10 of this embodiment, the one-wheel support frame has a front frame module 12 that supports the front wheel 31, and the two-wheel support frame has a two-wheel support frame module 15 that supports the rear wheel 41 and an auxiliary frame module 14 that connects the two-wheel support frame module to the main frame, forming a frame form for a three-wheeled vehicle. Therefore, a three-wheeled vehicle can be formed using the body frame 10 of this embodiment.

[0094] Furthermore, in the body frame 10 of this embodiment, the two-wheel support frame has a first two-wheel support frame module 151 that supports the front wheels 31, a second two-wheel support frame module 152 that supports the rear wheels 41, and auxiliary frame modules 161, 162 that connect the first two-wheel support frame module 151 and the second two-wheel support frame module 152 to the main frame 11, forming a frame form for a four-wheel vehicle. Therefore, the body frame 10 of this embodiment can be used to form a four-wheel vehicle.

[0095] Furthermore, the electric vehicle 1 of this embodiment includes the body frame 10, the cowl 2 covering the body frame 10, a front wheel 31 supported by the single-wheel support frame 12, 13 or the two-wheel support frame 15, 151, a rear wheel 41 supported by the single-wheel support frame 13 or the two-wheel support frame 15, 152, an in-wheel motor 31, 41 as a drive unit that rotates at least one of the front wheel 31 or the rear wheel 41, and a battery 7 that drives the in-wheel motor 31, 41. Therefore, according to the electric vehicle 1 of this embodiment, the body frame 10 can be manufactured in a plurality of modules, and the plurality of frame modules 11, 12, 13, 14, 15, 16 can be assembled into various shapes, and a usage form according to the situation can be adopted.

[0096] In the electric vehicle 1 of this embodiment, the battery 7 is mounted in the first battery storage section 21b surrounded by the main frame 11 and the second battery storage section 23d above the wheels 31, 41 supported by the one-wheel support frame or the two-wheel support frame, and the internal width dimensions of the first battery storage section 21b and the second battery storage section 23d are integral multiples of the width dimension of the battery 7, and when the battery 7 is inserted into the first battery storage section 21b and the second battery storage section 23d, the battery 7 and the terminals inside the first battery storage section 21b and the second battery storage section 23d are connected. Therefore, according to the electric vehicle 1 of this embodiment, the battery 7 can be easily replaced and many batteries 7 can be mounted.

[0097] In addition, in the electric vehicle 1 of this embodiment, the battery 7 includes a small battery 7a and a large battery 7b that is twice as large as the small battery 7a in the width direction. Therefore, according to the electric vehicle 1 of this embodiment, the batteries 7 that are different in capacity and compatible with each other can be selected and used.

[0098] It should be noted that the present invention is not limited to the embodiments, and that although many specific details are included for illustrative purposes in the description of the embodiments, those skilled in the art may make various variations and modifications to these details. [Explanation of symbols]

[0099] 1...Electric vehicles, 2...Cowling, 21...Main cowling, 22...First cowling, 23...Second cowling, 3...first wheel portion, 31...first wheel, 32...front fork, 33...bracket, 4... second wheel portion, 41... second wheel, 42... swing arm, 43... suspension 5...handle portion, 6...seat portion, 7...battery, 7...control portion, 10... vehicle body frame, 11... main frame, 12... front frame module (single wheel support frame), 13... single wheel support frame module (single wheel support frame), 14... auxiliary frame module (two wheel support frame), 15... two wheel support frame module (two wheel support frame), 16... wide auxiliary frame module (two wheel support frame),

Claims

1. The mainframe and At least one of a single-wheel support frame that is detachable from the main frame and supports one wheel, and a two-wheel support frame that is detachable from the main frame and supports two wheels; Equipped with The main frame includes: The one-wheel support frame or the two-wheel support frame can be connected to one side, The one-wheel support frame or the two-wheel support frame can be connected to the other one, The frame will be either a two-wheeled, three-wheeled, or four-wheeled vehicle. A vehicle body frame characterized by:

2. The two-wheel support frame is formed by connecting the one-wheel support frames side by side.

2. The vehicle body frame according to claim 1.

3. The one-wheel support frame is A front frame module supporting the front wheels; A single wheel support frame module for supporting a rear wheel; having The frame form of the motorcycle is 2. The vehicle body frame according to claim 1.

4. The one-wheel support frame is Front frame module that supports the front wheels having The two-wheel support frame includes: A two-wheel support frame module that supports a rear wheel; an auxiliary frame module that connects the two-wheel support frame module to the main frame; having The frame form of the tricycle 2. The vehicle body frame according to claim 1.

5. The two-wheel support frame includes: A first two-wheel support frame module for supporting a front wheel; A second two-wheel support frame module supporting a rear wheel; an auxiliary frame module that connects the first two-wheel support frame module and the second two-wheel support frame module to the main frame; having The frame configuration of the four-wheeled vehicle is as follows:

2. The vehicle body frame according to claim 1.

6. A vehicle body frame according to any one of claims 1 to 5; A cowl that covers the vehicle body frame; The front wheel supported by the one-wheel support frame or the two-wheel support frame; The rear wheel supported by the one-wheel support frame or the two-wheel support frame; A drive unit that rotates at least one of the front wheels or the rear wheels; A battery that drives the drive unit; An electric vehicle comprising:

7. The battery includes: a first storage section surrounded by the main frame; A second storage section above the wheel supported by the one-wheel support frame or the two-wheel support frame; Installed in The internal width dimensions of the first storage section and the second storage section are an integer multiple of the width dimension of the battery, and when the battery is inserted into the first storage section and the second storage section, the battery and terminals in the first storage section and the second storage section are connected to each other.

7. The electric vehicle according to claim 6.

8. The battery includes: A first battery; A second battery having a width twice as large as that of the first battery.

8. The electric vehicle according to claim 7 .

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