JP7394239B2 - saddle type vehicle - Google Patents

Description

The present invention relates to a straddle-type vehicle, and particularly to a straddle-type vehicle in which a member that rotatably supports a rear wheel is swingably supported with respect to a vehicle body frame.

2. Description of the Related Art Conventionally, in a straddle-type tricycle having one front wheel and two rear wheels, a structure having a pivot for vertically swinging the rear wheel suspended by a rear cushion has been known.

Patent Document 1 discloses that in a straddle-type tricycle that includes a front body that supports a front wheel and a rear body that supports a rear wheel, the front end of a power unit that rotatably supports the rear wheel is attached to the rear body. A structure having a pivot for swingably supporting the shaft is disclosed.

Japanese Patent Application Publication No. 2011-020558

However, in the straddle-type tricycle disclosed in Patent Document 1, the battery disposed at the bottom of the loading platform and the pivot located at the front end of the power unit are separated from each other, and the mass of the entire vehicle tends to be dispersed. Further, in order to improve the steering stability of the vehicle, it is required that the longitudinal length of the vehicle is not too long.

SUMMARY OF THE INVENTION An object of the present invention is to provide a straddle-type vehicle that can solve the above-mentioned problems of the prior art, concentrate mass, and shorten the longitudinal length of the vehicle.

In order to achieve the above object, the present invention provides a body frame (70) constituting a vehicle, a battery (SB) fixed to the body frame (70), and a rear wheel (WR) rotatably supported. A straddle-type vehicle, comprising: an arm member (16) that supports a power unit (90), and a pivot (24) that swingably supports the arm member (16) with respect to the vehicle body frame (70). The first feature of (1) is that the pivot (24) is disposed at the front end of the arm member (16), near and below the battery (SB).

A second feature is that the battery (SB) is arranged tilted backward with respect to the vertical direction.

Further, a third feature is that a storage section (29) for storing members is provided below the seat (22), and the battery (SB) is arranged near the storage section (29).

The battery (SB) is a sub-battery that supplies power to auxiliary equipment, and the straddle-type vehicle (1) is an electric vehicle that drives a motor (M) with power from a main battery (B). There is a fourth characteristic.

It also includes a front body (BF) that supports a front wheel (WF) and a rear body (BR) that supports the rear wheel (WR), and the pivot (24) is attached to the rear body (BR). A rocking device (50) is provided to enable the rear vehicle body (BR) to swing in a roll direction with respect to the front vehicle body (BF), and the rocking device (50) includes: A fifth feature is that a Neidhardt mechanism is provided which generates an urging force to return the swinging motion in the roll direction to the neutral position by the elasticity of the rubber member.

A sixth feature is that the front wheel (WF) is one wheel, and the rear wheels (WR) are two wheels arranged in the vehicle width direction.

A seventh feature is that the main battery (B) and the battery (SB) are arranged close to each other in the front-rear direction.

Furthermore, an eighth feature is that the pivot (24) is located above the swinging device (50).

Furthermore, the ninth feature is that the pivot (24) is located at the front end of the rear vehicle body (BR).

According to the first feature, the vehicle includes a vehicle body frame (70), a battery (SB) fixed to the vehicle body frame (70), and a power unit (90) that rotatably supports the rear wheels (WR). ); and a pivot (24) that swingably supports the arm member (16) with respect to the vehicle body frame (70). , since the pivot (24) is disposed at the front end of the arm member (16) and near and below the battery (SB), the pivot is disposed closer to the front of the arm member. This allows the front-to-back length of the vehicle to be shortened, and by locating the pivot near and below the battery, it is possible to centralize mass.

According to the second feature, the battery (SB) is arranged so as to be inclined backward with respect to the vertical direction, so that the longitudinal length of the vehicle can be further shortened, and the mass can be concentrated. It becomes possible to promote

According to the third feature, the seat (22) is provided with a storage section (29) for storing components below the seat, and the battery (SB) is disposed near the storage section (29), so that additional Mass concentration can be achieved.

According to the fourth feature, the battery (SB) is a sub-battery that supplies power to auxiliary equipment, and the straddle-type vehicle (1) operates a motor (M) using power from a main battery (B). Since it is an electric vehicle that drives a straddle-type electric vehicle, it is possible to shorten the longitudinal length of the vehicle and centralize the mass.

According to the fifth feature, the pivot (24) includes a front body (BF) that supports a front wheel (WF) and a rear body (BR) that supports the rear wheel (WR), and the pivot (24) A rocking device (50) is provided on the side vehicle body (BR) and allows the rear vehicle body (BR) to swing in the roll direction with respect to the front vehicle body (BF), and the rocking device (50) The device (50) is equipped with a Neidhardt mechanism that generates an urging force to return the rocking motion in the roll direction to a neutral position by the elasticity of the rubber member, so that in a saddle type vehicle equipped with the Neidhardt mechanism, the longitudinal length of the vehicle can be shortened. This makes it possible to centralize the infrastructure and mass.

According to the sixth feature, the front wheel (WF) is one wheel, and the rear wheels (WR) are two wheels arranged in the vehicle width direction, so that in the straddle-type tricycle equipped with a Neidhardt mechanism, , it becomes possible to shorten the front-to-back length of the vehicle and centralize mass.

According to the seventh feature, the main battery (B) and the battery (SB) are arranged close to each other in the front-rear direction, so that the main battery and the sub-battery, which are heavy objects, are arranged close to each other in the front-rear direction. This makes it possible to centralize mass throughout the vehicle.

According to the eighth feature, the pivot (24) is located above the rocking device (50), so that the space above the rocking device can be effectively utilized to centralize the mass and increase the longitudinal length. This makes it possible to shorten the time.

According to the ninth feature, since the pivot (24) is located at the front end of the rear vehicle body (BR), the space above the swinging device can be effectively utilized.

FIG. 1 is a perspective view of a straddle-type electric tricycle according to the present embodiment. FIG. 3 is a left side view of the straddle-type electric tricycle. FIG. 2 is a left side view of the straddle-type electric tricycle with exterior parts removed. FIG. 2 is a perspective view of a vehicle body frame that constitutes a front vehicle body. It is a perspective view of a rocking device. FIG. 3 is a left side view of the rear vehicle body. FIG. 3 is a perspective view of the rear vehicle body. FIG. 2 is a partially enlarged left side view of the straddle-type electric tricycle with covers removed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a straddle-type electric tricycle 1 as a straddle-type vehicle according to the present embodiment. 2 is a left side view of the straddle-type electric tricycle 1, and FIG. 3 is a left side view of the straddle-type electric tricycle 1 with exterior parts removed from the state shown in FIG.

The straddle-type electric tricycle 1 is a scooter in which a front body BF supporting one front wheel WF and a rear body BR supporting two rear wheels WR are pivotally supported by a rocking device 50 so as to be swingable in the roll direction. It is a type of electric vehicle. Two high-voltage main batteries B, which supply electric power to the motor M that drives the rear wheels WR, are housed below the seat 22 provided on the front vehicle body BF, in parallel in the vehicle width direction. The two main batteries B can be removed from the vehicle body by pulling them upward with the retractable seat 22 open. A low floor 12 is provided between the steering handle 2 and the seat 22 on which the driver puts his or her feet.

The body frame F constituting the front body BF includes a head pipe F2 that swingably supports a steering stem F1 to which the steering handle 2 is fixed, a down frame F3 that extends rearward and downward from the head pipe F2, and a down frame F3 that extends rearward and downward from the head pipe F2. It includes a pair of left and right curved frames F6 connected to both side surfaces of the frame F3, extending downward and curving backward, and a pair of left and right floor frames F4 connected to the curved frames F6 and extending rearward.

A pair of left and right rearview mirrors 3 and a meter device 4 are attached to the steering handle 2. A bottom bridge F5 is fixed to the lower end of the steering stem F1 that supports the steering handle 2, and a pair of left and right front forks 9 that rotatably support the front wheel WF are fixed to the bottom bridge F5. .

A rocking device 50 that swingably supports the front vehicle body BF and the rear vehicle body BR is fixed to the lower part of the floor frame F4 at a position below the battery B. The rear vehicle body BR having a large loading platform 19 is provided with a swing arm 16 as a pair of left and right arm members that is swingably supported by a pivot 24, and a rear wheel WR is attached to the rear of the swing arm 16. A supporting power unit 90 is attached.

The front of the head pipe F2 is covered with a center cowl 5 that is connected to a pair of left and right side cowls 10, and a leg shield 11 is provided at the rear of the head pipe F2. Front flasher lamps 6 are attached to the left and right sides of an extension that supports the headlight 7, and a front fender 8 that covers the upper part of the front wheel WF is supported by a front fork 9.
An undercowl 13 that covers the sides and bottom of the floor frame F4 is connected to both left and right ends of the low floor 12. An under-seat cowl 14 that covers a battery case 29 serving as a storage section from the front and a rear cover 15 connected to the rear of the under-seat cowl 14 are disposed below the seat 22.

As shown in FIG. 3, a junction box J, which is a wiring terminal, is arranged behind the main battery B and inside the rear cover 15. Main battery B and junction box J constitute a power supply device that supplies power to motor M. On the other hand, a control device (PCU: power control unit) 64 for transmitting electric power supplied from the main battery B and the junction box J to the motor M is arranged at the front end of the rear vehicle body BR. A lower battery cover 30 is provided at the lower end of the main battery B as a cover member that covers terminals on the vehicle body side.

A thin pipe-shaped stopper 18 is provided on the cargo platform 19 of the rear vehicle body BR to prevent the cargo from shifting. A loading platform 19 made of a thin plate-like synthetic resin or the like is arranged on the upper part of the rear body frame 70, and a rear fender 17 that covers the upper part of the rear wheel WR is fixed to the lower part of the rear body frame 70. . The loading platform 19 is supported by a loading platform frame 32 made of a round metal pipe fixed to the rear vehicle body frame 70. A loading platform frame cover 20 is disposed at the front end of the loading platform 19 to cover a portion of the loading platform frame 32 that stands in an arch shape above. A storage section 23 suitable for storing a plate-like member 21 such as a notebook or a binder is provided on the front surface of the platform frame cover 20. A left electrical component cover 25 is attached to the front of the rear fender 17 on the left side of the vehicle body. A sub-battery SB that supplies power to auxiliary equipment such as the headlight 7 is disposed inside the left electrical component cover 25. A tail lamp 27, a pair of left and right rear flasher lamps 28, and a license plate holder 26 are fixed to the rear end of the rear body frame 70, which is mainly made of square metal pipe material.

FIG. 4 is a perspective view of a vehicle body frame F that constitutes the front vehicle body BF. The vehicle body frame F, which is mainly made of metal round pipe material, includes a down frame F3 extending rearward and downward from a head pipe F2, and left and right frames connected to both sides of the down frame F3, extending downward and curving rearward. It includes a pair of curved frames F6 and a pair of left and right floor frames F4 connected to the curved frames F6 and extending rearward. The down frame F3 at the center in the vehicle width direction is curved rearward at its lower end and connected to a gusset F7 fixed to a pair of left and right floor frames F4.

A long low floor support stay 33 that supports the low floor 12 is spanned over the upper part of the floor frame F4 at a position behind the gusset F7. A pair of left and right front battery case support stays 34 and a rear battery case support stay 37, which support the battery case 29 from below, are attached to the rear of the low floor support stay 33, respectively.

A cross frame F8 is disposed inside the rear battery case support stay 37 and connects the left and right floor frames F4 in the vehicle width direction. A rear stay 38 is provided to support a position near the rear of the vehicle 50. On the other hand, a pair of left and right front stays 35 are provided below the front battery case support stay 34 to support a position closer to the front of the rocking device 50.

FIG. 5 is a perspective view of the rocking device 50. This figure shows the state seen from the rear and upper side on the right side. The rocking device 50 having a metal casing rotatably supports a metal rocking shaft 60 fixed to the rear vehicle body BR, and provides an urging force to return the rocking shaft 60 to a neutral position. It is a structure with a built-in biasing mechanism. A Neidhardt mechanism that utilizes the elasticity of a plurality of cylindrical rubber members is applied to the biasing mechanism. The swing shaft 60 is fixed to the rear vehicle body BR by two bolts 61 and nuts 62 that penetrate in the vehicle width direction.

The front end of the rocking device 50 is provided with front support portions 51L and 51R divided into left and right parts, and a rear support portion 51L and 51R that is vertically provided above is provided at the center of the vehicle width direction toward the rear of the rocking device 50. A section 55 is provided. The front support portions 51L, 51R are fixed to a front stay 35 (see FIG. 4) provided on the vehicle body frame F of the front vehicle body BF using bolts 53, collar members 52, and nuts 54. Further, the rear support portion 55 is fixed to the rear stay 38 (see FIG. 4) provided on the vehicle body frame F using bolts 56 and nuts 57. A flat side surface 58 is formed on the right side of the rocking device 50 in the vehicle width direction.

FIG. 6 is a left side view of the rear vehicle body BR. This figure shows a state in which the swing device 50 is fixed to the rear vehicle body BR and the front vehicle body BF is removed. A through hole 51a through which a bolt 53 is passed is formed in the front support portions 51L, 51R of the swinging device 50. Further, the rear support portion 55 of the swinging device 50 is formed with a through hole 55a through which a bolt 56 is passed.

In this embodiment, power from the main battery B is once sent to a junction box J, which is a wiring terminal, and is then sent to the rear vehicle body BR via high voltage harnesses H1 and H2 extending from the junction box J. The high-voltage harnesses H1 and H2 extending downward and forward from the junction box J are bent to make a U-turn at the curved portion C located in front of the front support portions 51L and 51R, and then passed through the right side of the swinging device 50 and rearward. It will be routed towards. Note that a configuration may be adopted in which the junction box J as a power supply device is eliminated and power is directly supplied from the main battery B to the rear vehicle body BR.

The loading platform 19 has a shape that includes an upright portion 19b erected upward at the front end of a flat plate portion 19a on which cargo is placed. The loading platform frame cover 20 is configured to simultaneously cover the arch portion of the loading platform frame 32 and the upright portion 19b of the loading platform 19.

FIG. 7 is a perspective view of the rear vehicle body BR. As described above, the storage section 23 is provided on the front surface of the platform frame cover 20. A control device 64 that controls the electric power supplied to the motor M is disposed below the storage portion 23 so that a plurality of cooling fins are exposed at the front of the vehicle body. A left electrical component cover 25 and a right electrical component cover 63 are provided on the left and right sides of the control device 64. The sub-battery SB as a battery disposed inside the left electrical component cover 25 is located between the left electrical component cover 25 and the control device 64, with its longitudinal direction facing up and down when viewed from the side of the vehicle body, and with its lower end facing upward and downward. It is fixed and tilted backwards with respect to the vertical direction so that the upper end is located further back than the upper end.

FIG. 8 is a partially enlarged left side view of the straddle-type electric tricycle 1 with covers removed. The sub-battery SB is disposed between the rear vehicle body frame 70 and the control device 64 on the left side in the vehicle width direction. As described above, the swing arm 16 that supports the power unit 90 is swingably supported by the pivot 24 on the pair of left and right rear vehicle body frames 70 . In this embodiment, the pivot 24 is disposed at the front end of the swing arm 16 and at the lower end of the rear body frame 70. This makes it possible to keep the longitudinal length of the vehicle short. Further, the pivot 24 is provided near and below the sub-battery SB, and by locating the pivot 24 near and below the sub-battery SB, which is a heavy object, it is possible to centralize the mass. .

Moreover, the sub-battery SB is arranged to be inclined backward with respect to the vertical direction. The inclination angle of the sub-battery SB is along the inclination angle of the rear body frame 70 and the control device 64, which allows the rear end surface of the front vehicle body BF and the front end surface of the rear vehicle body BR to be placed close to each other. As a result, the front-rear length of the vehicle can be further shortened, and mass concentration can be promoted. Further, by providing a storage section 29 for storing components below the seat 22 and disposing the sub-battery SB near the storage section 29, it is possible to further centralize the mass. Furthermore, since main battery B and sub-battery SB are arranged close to each other in the front-rear direction, it is possible to centralize mass in the entire vehicle.

Note that the form of the straddle-type vehicle, the form of the front body and the rear body, the shape and structure of the power unit and swing arm, the shape and arrangement position of the main battery and sub-battery, etc. are not limited to the above embodiments, and may be modified in various ways. Changes are possible. The arrangement position of the pivot according to the present invention is not limited to straddle-type electric tricycles, but can be applied to straddle-type two-wheeled vehicles, four-wheeled vehicles, and the like.

DESCRIPTION OF SYMBOLS 1...Saddle-type electric tricycle (straddle-type vehicle), 16...Swing arm (arm member), 22...Seat, 24...Pivot, 29...Battery case (storage part), 50...Rocking device, 70...Rear side Body frame (body frame), 90...power unit, B...main battery, SB...sub battery (battery), M...motor, BF...front body, BR...rear body, WF...front wheel, WR...rear wheel

Claims (9)

A vehicle body frame (70) that constitutes a vehicle, a battery (SB) fixed to the vehicle body frame (70), and an arm member (16) that supports a power unit (90) that rotatably supports a rear wheel (WR). ), and a pivot (24) that swingably supports the arm member (16) with respect to the vehicle body frame (70),
The pivot (24) is disposed at the front end of the arm member (16) and at a position near and below the battery (SB),
A storage section (29) for storing components is provided below the seat (22),
The battery (SB) is arranged near the storage section (29),
The battery (SB) is a sub-battery that supplies power to auxiliary equipment,
The straddle-type vehicle (1) is an electric vehicle that drives a motor (M) with electric power from a main battery (B),
A front vehicle body (BF) that supports a front wheel (WF), and a rear vehicle body (BR) that supports the rear wheel (WR),
The pivot (24) is provided on the rear vehicle body (BR),
A rocking device (50) is provided that allows the rear vehicle body (BR) to swing in a roll direction with respect to the front vehicle body (BF),
The rocking device (50) includes a Neidhardt mechanism that generates a biasing force that returns the rocking motion in the roll direction to a neutral position by the elasticity of the rubber member,
The main battery (B) is stored in the storage section (29) provided in the front vehicle body (BF),
A straddle-type vehicle, wherein the battery (SB) is disposed in the rear vehicle body (BR). The straddle-type vehicle according to claim 1, wherein the battery (SB) is arranged so as to be inclined backward with respect to the vertical direction. (delete) (delete) (delete) The straddle-type vehicle according to claim 1 or 2, wherein the front wheel (WF) is one wheel, and the rear wheels (WR) are two wheels arranged side by side in the vehicle width direction. The straddle-type vehicle according to claim 1, wherein the main battery (B) and the battery (SB) are arranged close to each other in a longitudinal direction. The straddle-type vehicle according to any one of claims 1, 2, 6, and 7, wherein the pivot (24) is located above the rocking device (50). The straddle-type vehicle according to any one of claims 1, 2, 6, 7, and 8, wherein the pivot (24) is located at a front end of the rear vehicle body (BR).

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