Saddle-riding type vehicle

Abstract

To inhibit size increase of a vehicle body and improve convenience.SOLUTION: A saddle-riding type vehicle (1) can travel with electric power of a battery (53). The saddle-riding type vehicle is provided with: a low floor board (45) which is installed in front of a seat (41) on a vehicle body frame (10); and a motor (60) which drives a driving wheel (34) with electric power from the battery. The motor is installed below the floor board.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a saddle-type vehicle. [Background technology]

[0002] In recent years, electric straddle-type vehicles that run on electricity have been developed. A known example of this type of straddle-type vehicle is a scooter-type vehicle in which a motor is installed between a low floorboard and the rear wheel (see, for example, Patent Document 1). In the straddle-type vehicle described in Patent Document 1, a lower frame passes under the floorboard, and side frames rise backward from the rear end of the lower frame towards the seat. A battery and a charger are installed below the lower frame, and a motor is installed behind the side frames. The motor and rear wheels are supported by the side frames via brackets or the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 6-135370 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the saddle-type vehicle described in Patent Document 1, the battery and the motor are arranged in a front-to-rear arrangement, and the vehicle body is extended in the front-to-rear direction, resulting in an increase in size. Although the increase in size of the vehicle body can be prevented by narrowing the front-to-rear length of the floorboard, the tread surface of the floorboard becomes narrow, reducing convenience during driving. In addition, if the motor is installed behind the side frame, the space of the storage box under the seat becomes narrow, reducing convenience.

[0005] The present invention has been made in consideration of the above-mentioned points, and has an object to provide a saddle-type vehicle that can prevent the body from becoming large and improves convenience. [Means for solving the problem]

[0006] One embodiment of the saddle-type vehicle of the present invention is a saddle-type vehicle that can run on battery power, and is equipped with a low floor board mounted on the body frame in front of the seat, and a motor that drives the drive wheels using power from the battery, and the above-mentioned problem is solved by installing the motor below the floor board. Effect of the Invention

[0007] According to a saddle-type vehicle of one aspect of the present invention, the motor is installed under the floor board, which shortens the front-to-rear length of the vehicle body and prevents the vehicle from becoming too large, and the floor board tread and the storage box under the seat are made large. This makes it possible to improve the convenience of the saddle-type vehicle while preventing the vehicle body from becoming too large. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a left side view of the saddle-ride type vehicle of the present embodiment. [Diagram 2] FIG. 2 is a right side view of the saddle-type vehicle of the present embodiment. [Diagram 3] FIG. 2 is a right side view of the rear part of the vehicle body of the present embodiment. [Figure 4] 3 is a cross-sectional view of the saddle type vehicle of FIG. 2 taken along line AA. [Diagram 5] FIG. 2 is a perspective view of a battery bracket and a motor bracket according to the embodiment. [Figure 6] 5 is a cross-sectional view of the rear part of the vehicle body in FIG. 4 taken along line BB. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A saddle-type vehicle according to one aspect of the present invention travels by a motor driving drive wheels using power from a battery. A low floorboard is installed on a body frame in front of a seat of the saddle-type vehicle, and a motor is installed below the floorboard. By installing the motor below the floorboard, the front-to-rear length of the vehicle body is shortened, preventing the vehicle from becoming large, and a large storage box is ensured for the floorboard tread and below the seat. This makes it possible to improve the convenience of the saddle-type vehicle while preventing the vehicle body from becoming large. EXAMPLES

[0010] The saddle riding type vehicle of this embodiment will be described below with reference to the accompanying drawings. Fig. 1 is a left side view of the saddle riding type vehicle of this embodiment. Fig. 2 is a right side view of the saddle riding type vehicle of this embodiment. Note that the following figures show a state in which a body cover is removed from the saddle riding type vehicle. Also, in the following figures, the arrow Fr indicates the front of the vehicle, the arrow Re indicates the rear of the vehicle, the arrow L indicates the left side of the vehicle, and the arrow R indicates the right side of the vehicle.

[0011] 1 and 2, a low floorboard 45 is installed on the body frame 10 of the saddle-type vehicle 1 in front of the seat 41. A head pipe 11 is provided at the front end of the body frame 10, and a front frame 12 extends diagonally rearward and downward from the head pipe 11. A pair of left and right lower frames 13 are connected to the lower part of the front frame 12, and the pair of lower frames 13 extend rearward below the floorboard 45. A pair of side frames 14 rise from rear portions of the pair of lower frames 13 toward the seat 41, and upper portions of the pair of side frames 14 are bent rearward to form a seat frame 15.

[0012] A front fork 31 is steerably supported on the head pipe 11 via a steering shaft (not shown). A handle 32 is provided on the upper part of the steering shaft, and a front wheel 33 is rotatably supported on the lower part of the front fork 31. A pair of U-shaped rear frames 16 extend rearward from the pair of side frames 14, and a rear wheel (drive wheel) 34 is rotatably supported on a pair of rear brackets 18 at the rear ends of the pair of rear frames 16. A rear fender 35 is attached to the upper parts of the rear brackets 18 and the rear frames 16, and the rear wheel 34 is covered from above by the rear fender 35.

[0013] A seat 41 is supported on the pair of seat frames 15, and a storage box 29 is installed below the seat frames 15. The storage box 29 is located inside the pair of side frames 14, and an upper access opening of the storage box 29 is covered from above by the seat 41. A floor board 45 is installed on the pair of lower frames 13, and the legs of a driver seated in the seat 41 are placed on the tread surface of the floor board 45. A battery 53 is installed via a battery holder 50 on the upper rear surface of the floor board 45, and a motor 60 is installed on the lower rear side of the floor board 45.

[0014] Although details will be described later, in the saddle riding type vehicle 1 of this embodiment, a main holder 51 and a sub-holder 52 are provided as the battery holder 50. A main battery 54 that supplies power to the motor 60 is detachably held in the main holder 51, and a sub-battery 55 that supplies backup power to the motor 60 is detachably held in the sub-holder 52. In the following, when there is no need to distinguish between the main holder 51 and the sub-holder 52, they will be collectively referred to as the battery holder 50, and when there is no need to distinguish between the main battery 54 and the sub-battery 55, they will be collectively referred to as the battery 53.

[0015] A drive sprocket 36 is provided on the output shaft of the motor 60, and a driven sprocket 37 is provided on the axle of the rear wheel 34. The drive sprocket 36 of the motor 60 and the driven sprocket 37 of the rear wheel 34 are connected via a chain 38. Electricity is supplied to the motor 60 from a battery 53, and the motor 60 drives the rear wheel 34 via the drive sprocket 36, the chain 38, and the driven sprocket 37. A side stand 39 is provided on the left lower frame 13, and by raising the side stand 39, the vehicle body can stand on its own while tilted to the left (one side in the vehicle width direction).

[0016] In an electric saddle-type vehicle 1, depending on the motor layout, it may not be possible to ensure a sufficient tread surface of the floorboard 45 or a storage box 29. Also, in a typical saddle-type vehicle, the motor is supported by a bracket integrally joined to the body frame, making it difficult to adjust the chain line in response to changes in wheel size or tire width. Therefore, in the saddle-type vehicle 1 of this embodiment, the motor 60 is installed below the floorboard 45 to ensure a sufficient tread surface of the floorboard 45, and the motor 60 is installed via a detachable bracket on the pair of lower frames 13, thereby allowing for changes in wheel size, etc.

[0017] The rear structure of the saddle riding type vehicle will be described below with reference to Fig. 3 and Fig. 4. Fig. 3 is a right side view of the rear part of the vehicle body of this embodiment. Fig. 4 is a cross-sectional view of the saddle riding type vehicle of Fig. 2 taken along line AA.

[0018] 3, a seat 41 is supported on the pair of seat frames 15, and the seat 41 protrudes forward beyond the front surface of the storage box 29. In a side view, the front surface of the storage box 29 is formed parallel to the pair of side frames 14, and the storage box 29 is installed inside the body cover 26 that covers the pair of side frames 14. Inside the body cover 26, a lower portion of the storage box 29 is supported by a frame bridge 21 that connects the lower portions of the pair of side frames 14, and an upper portion of the storage box 29 is supported by a frame bridge 22 that connects the rear sides of the pair of seat frames 15.

[0019] A pair of side frames 14 rise from the rear of the floorboard 45 toward the seat 41, and the seat 41 protrudes forward beyond the pair of side frames 14. The front half of the seat 41 faces the floorboard 45, and the rear half of the floorboard 45 is covered from above by the front half of the seat 41. The pair of side frames 14 and the storage box 29 are located inside the body cover 26, and the outside of the body cover 26 is an external space sandwiched between the floorboard 45 and the seat 41 from above and below. The external space between the floorboard 45 and the seat 41 is open to the surroundings except for the rear.

[0020] A main holder 51 (see FIG. 4) and a sub-holder 52 are installed in the external space between the floor board 45 and the seat 41. A main battery 54 is held in the main holder 51, and a sub-battery 55 is held in the sub-holder 52. The pair of side frames 14 are positioned rearward of the main battery 54 and the sub-battery 55 so that the main battery 54 and the sub-battery 55 do not overlap with the side frames 14 in a side view. By exposing the main battery 54 and the sub-battery 55 to the outside from the body cover 26, the attachment and detachment of the main battery 54 and the sub-battery 55 is improved.

[0021] The main holder 51 and the sub-holder 52 are positioned between the front end of the seat 41 and the side frame 14. When the main battery 54 and the sub-battery 55 are held in the main holder 51 and the sub-holder 52, the main battery 54 and the sub-battery 55 are also positioned rearward of the front end of the seat 41. In this manner, the main battery 54 and the sub-battery 55 are installed by utilizing the space behind the driver's legs. When the driver lowers his / her legs directly below, the main battery 54 and the sub-battery 55 do not interfere with the driver's legs, and a sufficient tread surface for the legs to rest on is secured on the floor board 45 in front of the seat 41.

[0022] The main battery 54 and the sub-battery 55 are held by the main holder 51 and the sub-holder 52 so as to be aligned with the side frame 14, and the inclination of the rear surfaces of the main battery 54 and the sub-battery 55 is approximately parallel to the inclination of the side frame 14. Also, the main battery 54 and the sub-battery 55 are inclined forward so that their upper ends are further forward than their lower ends. By bringing the main battery 54 and the sub-battery 55 closer to the side frame 14 and positioning the lower ends of the main battery 54 and the sub-battery 55 rearward, a wide tread surface of the floorboard 45 is ensured.

[0023] The main battery 54 and the sub-battery 55 are installed above the floorboard 45, and a part of the motor 60 is located directly below the main battery 54 and the sub-battery 55. That is, the motor 60 is installed directly below the main holder 51 and the sub-holder 52, with the floorboard 45 in between. The main battery 54, the sub-battery 55, and the motor 60 are arranged vertically in a side view, so that the main battery 54, the sub-battery 55, and the motor 60 are installed compactly. By installing the motor 60 below the floorboard 45, the floorboard 45 functions as a canopy, making it difficult for rainwater to adhere to the motor 60 during rainfall.

[0024] The floorboard 45 is supported from below by a pair of lower frames 13, and the motor 60 is positioned below the lower frames 13. In addition, a base end portion 17 of the rear frame 16 is located near the boundary between the lower frame 13 and the side frames 14, and the motor 60 is positioned below the base end portion 17 of the rear frame 16. Since the motor 60, which is a heavy object, is located in a low position, the center of gravity of the vehicle body is lowered, improving driving stability. Furthermore, since the drive shaft center O1 of the motor 60 is located below the rotation shaft center O2 of the rear wheels 34 when the vehicle is stopped, the center of gravity of the vehicle body is further lowered, improving driving stability.

[0025] As shown in Fig. 4, a main holder 51 and a sub-holder 52 are installed side by side in the vehicle width direction on the floor board 45. The main holder 51 is formed in a concave shape that is open on the upper side and the left side, and the main battery 54 can be attached and detached to the main holder 51 from the left side. A pair of guide holes (not shown) are formed in the front and rear walls of the main holder 51, and a pair of guide shafts (not shown) that fit into the guide holes are formed in the lower part of the main battery 54. In addition, a holder terminal (not shown) protrudes from the bottom surface of the main holder 51, and a battery terminal (not shown) is provided in an insertion port on the bottom surface of the main battery 54.

[0026] The sub-holder 52 is formed in a concave shape that is open at the top and front, and the sub-battery 55 can be attached to and detached from the front side of the sub-holder 52. A pair of guide holes (not shown) are formed in the left and right walls of the sub-holder 52, and a pair of guide shafts (not shown) that fit into the guide holes are formed in the lower part of the sub-battery 55. In addition, a holder terminal (not shown) protrudes from the bottom surface of the sub-holder 52, and a battery terminal (not shown) is provided in an insertion port on the bottom surface of the sub-battery 55. In this way, the attachment and detachment direction of the main battery 54 to the main holder 51 and the attachment and detachment direction of the sub-battery 55 to the sub-holder 52 are different.

[0027] In this case, the main battery 54 can be attached to and detached from the main holder 51 from the side stand 39 side. The side stand 39 is provided on the left side of the vehicle body, and when the saddle-type vehicle 1 is stopped, the vehicle body is tilted to the left and stands on its own. Because the main holder 51 is tilted to the left, the main battery 54 can be smoothly attached to and detached from the main holder 51 from the left side. In addition, the sub-battery 55 can be attached to and detached from the sub-holder 52 from the front side. The sub-battery 55 is held by the sub-holder 52 in a forward-leaning position. Because the sub-holder 52 is tilted forward, the sub-battery 55 can be smoothly attached to and detached from the sub-battery 55 from the front side.

[0028] Locking mechanisms 56, 57 are provided on the right side of the main battery 54 and the sub-battery 55. The locking mechanisms 56, 57 are attached to the cross plate 25 that connects the pair of side frames 14. A locking piece (not shown) is provided on each of the locking mechanisms 56, 57, and a locking hole (not shown) is provided on each of the main battery 54 and the sub-battery 55. Key cylinders 58, 59 are provided on the front of the locking mechanisms 56, 57, and by rotating the key cylinders 58, 59 with a mechanical key, the locking piece fits into the locking hole, locking the main battery 54 and the sub-battery 55 so that they cannot be removed.

[0029] The detailed configurations of the battery bracket and the motor bracket will be described with reference to Fig. 5 and Fig. 6. Fig. 5 is a perspective view of the battery bracket and the motor bracket of this embodiment. Fig. 6 is a cross-sectional view of the rear part of the vehicle body of Fig. 4 cut along the line BB.

[0030] 5 and 6, a motor bracket 63 is attached to the vehicle body frame 10, and a battery bracket 71 is attached onto the motor bracket 63. The motor bracket 63 supports the motor 60 from above, and the battery bracket 71 supports the battery 53 from below via the battery holder 50. A base plate 64 of the motor bracket 63 is formed to have an upper surface and both side surfaces, and the base plate 64 is positioned inside the pair of lower frames 13 with both side surfaces facing in the vehicle width direction.

[0031] A long pipe material 65 penetrating both side surfaces is joined to the front side of the base plate 64, and short pipe materials 66 are joined to each of the side surfaces at the rear side of the base plate 64. A pair of suspension brackets 23 corresponding to the long pipe materials 65 are joined to the pair of lower frames 13, and a pair of suspension brackets 24 corresponding to the pair of short pipe materials 65 are joined to the pair of rear frames 16. The front side of the base plate 64 is screwed to the pair of suspension brackets 23 with fixing bolts that pass through the pipe materials 65, and the rear side of the base plate 64 is screwed to the pair of suspension brackets 24 with a pair of fixing bolts that pass through the pair of pipe materials 66.

[0032] A front support plate 67 is joined to the front side of the lower surface of the base plate 64 and to the long pipe material 65, and a rear support plate 68 is joined to the center of the lower surface of the base plate 64. A front mounting portion 61 corresponding to the front support plate 67 is formed on the front side of the upper part of the motor 60, and a rear mounting portion 62 corresponding to the rear support plate 68 is formed on the center of the upper part of the motor 60. The front mounting portion 61 of the motor 60 is screwed to the front support plate 67, and the rear mounting portion 62 of the motor 60 is screwed to the rear support plate 68. In this manner, the motor 60 is attached to the body frame 10 via the motor bracket 63.

[0033] The battery bracket 71 is formed by joining a lower plate 72 and an upper plate 73 with a support member 74. The lower plate 72 of the battery bracket 71 is screwed to the upper surface of the base plate 64 of the motor bracket 63. The support member 74 stands up from the rear side of the upper surface of the lower plate 72 of the battery bracket 71. A notch 46 is formed in the rear side of the floor board 45, and the support member 74 protrudes upward beyond the floor board 45 through the notch 46. The upper plate 73 is supported on the upper end of the support member 74, and the upper plate 73 is positioned on the floor board 45.

[0034] The upper plate 73 of the battery bracket 71 is formed long in the vehicle width direction. The main holder 51 (see FIG. 4) is screwed to the left side of the upper surface of the upper plate 73, and the sub-holder 52 is screwed to the right side of the upper surface of the upper plate 73. In this manner, the battery bracket 71 is connected to the motor bracket 63 through the notch 46 in the floor board 45. The motor bracket 63 and the battery bracket 71 are integrally formed, simplifying the mounting structure of each bracket. By mounting the battery bracket 71 on the motor bracket 63, there is no need to prepare a suspension bracket for the battery bracket 71.

[0035] As described above, the motor bracket 63 is detachably attached to the body frame 10 with bolts or the like. The motor layout, such as the position of the motor 60 in the height direction, front-rear direction, and vehicle width direction, can be changed by replacing the motor bracket 63. In this case, multiple types of motor brackets 63 are prepared according to wheel sizes and tire widths. When the wheel size, etc. of the saddle riding type vehicle 1 is changed, the chain line can be appropriately adjusted in accordance with the change in wheel size, etc. by replacing the motor bracket 63 with one that corresponds to the changed wheel size, etc.

[0036] As described above, according to the saddle riding type vehicle 1 of this embodiment, the motor 60 is installed below the floor board 45, thereby shortening the front-to-rear length of the vehicle body and preventing it from becoming large, and the tread surface of the floor board 45 and the storage box 29 below the seat 41 are ensured to be large. Therefore, the convenience of the saddle riding type vehicle 1 can be improved while preventing the vehicle body from becoming large.

[0037] In this embodiment, the saddle-type vehicle is provided with a main battery and a sub-battery as batteries, but it is sufficient that the saddle-type vehicle is provided with at least one battery.

[0038] In addition, in this embodiment, the battery bracket and the motor bracket are connected below the floorboard, but the battery bracket and the motor bracket may be connected above the floorboard. For example, a support member may stand up from the base plate of the motor bracket, and this support member may be fixed to the battery bracket through a notch in the floorboard.

[0039] In addition, in this embodiment, the motor bracket is formed by joining a pipe material or a support plate to the base plate, but the motor bracket may be formed in any manner that is capable of supporting a motor.

[0040] Furthermore, in this embodiment, the battery bracket is formed by joining the lower plate, the support member, and the upper plate, but the battery bracket may be formed in any manner as long as it is capable of supporting the battery.

[0041] The layout of the motor in this embodiment is not limited to the above-mentioned saddle-ride type vehicle, and may be adopted in other saddle-ride type vehicles. Note that the saddle-ride type vehicle is not limited to all vehicles in which the rider sits astride the seat, but also includes scooter-type vehicles in which the rider does not sit astride the seat.

[0042] As described above, the first aspect is a saddle-type vehicle (1) that can run on power from a battery (53), and includes a low floorboard (45) installed on the body frame (10) in front of the seat (41), and a motor (60) that drives the drive wheels (rear wheels 34) with power from the battery, with the motor installed below the floorboard. With this configuration, the motor is installed below the floorboard, which shortens the front-to-rear length of the vehicle body and prevents it from becoming large, and ensures a large tread surface of the floorboard and a storage box below the seat. This makes it possible to improve the convenience of the saddle-type vehicle while preventing the vehicle body from becoming large.

[0043] In the second aspect, in the first aspect, the battery is installed above the floor board, and a part of the motor is located directly below the battery. With this configuration, the motor and the battery are arranged vertically, and are installed compactly.

[0044] The third aspect is the second aspect, but further includes a motor bracket (63) that supports the motor and a battery bracket (71) that supports the battery, and a notch (46) is formed in the floorboard, and the motor bracket and the battery bracket are connected through the notch in the floorboard. With this configuration, the motor bracket and the battery bracket can be integrated into one structure, simplifying the mounting structure of each bracket.

[0045] In a fourth aspect, in the third aspect, the motor bracket is detachably attached to the body frame. With this configuration, the motor layout can be changed by replacing the motor bracket, and the chain line can be adjusted in accordance with changes in wheel size and tire width.

[0046] In a fifth aspect, in any one of the first to fourth aspects, the floorboard is supported from below by a lower frame (13) of the vehicle body frame, and the motor is located below the lower frame. With this configuration, the motor, which is a heavy object, is located in a low position, lowering the center of gravity of the vehicle body and improving driving stability.

[0047] In a sixth aspect, in any one of the first to fifth aspects, the drive wheels are supported on the vehicle body frame via the rear frame (16), and the motor is located below the base end portion (17) of the rear frame. With this configuration, the motor, which is a heavy object, is located in a low position, lowering the center of gravity of the vehicle body and improving driving stability.

[0048] In a seventh aspect, in any one of the first to sixth aspects, the center (O1) of the motor drive shaft is located lower than the center (O2) of the rotation shaft of the drive wheels when the vehicle is stopped. With this configuration, the drive shaft of the motor, which is a heavy object, is located at a low position, lowering the center of gravity of the vehicle body and improving running stability.

[0049] Although the present embodiment has been described, other embodiments may be made by combining the above-described embodiments and modifications in whole or in part.

[0050] In addition, the technology of the present invention is not limited to the above examples, and may be modified, substituted, or altered in various ways without departing from the spirit of the technical idea. Furthermore, if the technical idea can be realized in a different way due to the progress of technology or a different technology derived therefrom, the invention may be implemented using that method. Therefore, the claims cover all embodiments that may be included within the scope of the technical idea. [Explanation of symbols]

[0051] 1: Saddle-type vehicle 10: Body frame 13: Lower frame 16: Rear frame 17: Base end of rear frame 34: Rear wheels (drive wheels) 41:Sheet 45: Floorboard 46: Floorboard cutout 53: Battery 60: Motor 63: Motor bracket 71: Battery bracket O1: Drive shaft center O2: Center of rotation axis

Claims

1. A saddle-type vehicle that can run on battery power, A low floorboard is attached to the vehicle frame in front of the seat, a motor that drives a drive wheel using electric power from the battery; A saddle-type vehicle, characterized in that the motor is installed below the floor board.

2. The battery is installed above the floor board, 2. The saddle-type vehicle according to claim 1, wherein a portion of the motor is located directly below the battery.

3. a motor bracket for supporting the motor; a battery bracket for supporting the battery, The floorboard has a notch formed therein, 3. The saddle-type vehicle according to claim 2, wherein the motor bracket and the battery bracket are connected to each other through a notch in the floor board.

4. 4. The straddle-type vehicle according to claim 3, wherein the motor bracket is detachably attached to the body frame.

5. The floor board is supported from below by a lower frame of the vehicle body frame, 3. The straddle-type vehicle according to claim 1, wherein the motor is positioned below the lower frame.

6. The drive wheels are supported by the body frame via a rear frame, 3. The saddle-type vehicle according to claim 1, wherein the motor is positioned lower than a base end of the rear frame.

7. 3. The saddle-type vehicle according to claim 1, wherein a center of a drive shaft of the motor is positioned lower than a center of a rotation shaft of the drive wheel when the vehicle is stopped.

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