TW580471B - Vehicle body structure in saddle-riding type vehicle - Google Patents

Abstract

To sufficiently improve the strength of a vehicle body frame, and to facilitate the treatment performance of a saddle-riding type vehicle even when the strength is sufficiently improved. A rear arm 25 extending straight in the longitudinal direction is disposed behind a coupling part 24 of an extension end part of a down tube 6 with a lower end part of a back stay 7. A front-end part of the rear arm 25 is pivotably supported by the coupling part 24 via a pivotably supporting shaft 26 so that the rear end side of the rear arm is vertically oscillated. A shock absorber 28 which is disposed behind the back stay 7 and extended straight in a backwardly descending manner. An upper-end part of the shock absorber 28 is pivotably supported by a rear part side of the rear arm 25. The back stay 7 is extended straight in a backwardly ascending manner from the coupling part 24, and an upper end part of the shock absorber 28 is pivoted by the extended part.

Description

(〇 霸 _ 面 国;: (Explanation of the invention should state: the technical field to which the invention belongs, the prior art, the content, the embodiments, and the drawings briefly) [Technical Field of the Invention j This invention relates to a saddle-type vehicle The vehicle body structure has: a vehicle body frame; a rear arm, which is pivotally supported by the vehicle body frame; and a bumper, which is erected on these vehicle body frames and the rear arm. [Previous Technology]

The body structure of the aforementioned saddle-type vehicle was previously constituted as follows. That is, the body frame constituting the vehicle body has: a head pipe, which constitutes the front upper end portion of the vehicle body frame; a lower pipe, which extends from the head pipe to the lower and rear; and a back support, which extends from the lower pipe. The end protrudes backwards and upwards.

A rear arm is installed behind the joint between the protruding end of the lower tube and the lower end of the back brace, which extends straight forward and backward. The rear arm allows the rear side to swing up and down freely than the front end. The pivot supports the front end portion of the rear arm to the joint portion. A bumper is also provided, which is linearly extended behind the back support and tilted backward and downward. The upper end of the bumper is pivotally supported by the back support. On the one hand, the lower end of the bumper is pivotally supported by the back support. On the rear side of the rear arm, the rear wheel is supported at the rear end of the rear arm by a stern axis. When the vehicle is traveling on a traveling road surface, the impact force received by the rear wheels from the traveling road surface is buffered by the shock absorber, so that it can smoothly ride. [Problems to be Solved by the Invention] However, in the above-mentioned prior art, the above-mentioned joint portion of the back brace pivotally supports a portion at the upper end portion of the bumper, which avoids interference with other vehicle components and forms a curved shape when viewed from the side of the vehicle body. . Therefore, when the vehicle is running, the back support part is liable to generate large (2) bending stress due to the impact force. Therefore, in order to resist such bending stress, the back support is formed with sufficient strength. As a result, the weight of the above back support is increased. This pair of saddles that need to stand on the road outside the vehicle to push the vehicle and other processing operations Seat-type vehicles are not good. The present invention has been made in view of the above-mentioned circumstances, and its object is to make it possible to sufficiently increase the strength of the vehicle body frame and to make handling operations of a saddle type vehicle easier. [Means for Solving the Problems] In order to solve the problems described above, the body structure of the saddle-type vehicle of the present invention is as follows. The invention of item 1 in the scope of the patent application is a body structure of a saddle-type vehicle. The body frame 3 has a lower tube 6 that extends from the head tube 5 to the lower back; and a back brace 7 that Those who extend backward from the protruding end of the lower tube 6: behind the joint portion 24 of the extended end of the lower tube 6 and the lower end of the back brace 7, a rear arm 25 is provided to extend straight in the forward and backward directions. The rear side of the rear arm 25 can swing up and down freely than the front end. The front end of the rear arm 25 is supported by the pivot portion 26 on the joint portion 24. A bumper 28 is provided behind the back support 7 and downward and rearward. In the tilted state, the upper end of the bumper 28 is pivotally supported by the back support 7. On the one hand, the lower end of the bumper 28 is pivotally supported by the rear side of the rear arm 25, and the rear wheel is supported by the axle 31. 32 is supported at the rear end portion of the rear arm 25. When viewed from the side of the vehicle 1, the back support 7 is extended linearly from the coupling portion 24 rearward and upward, and the upper end portion of the bumper 28 is pivotally supported by this protruding portion. The invention of the second scope of the patent application is the body structure of a saddle-type vehicle such as the first scope of the patent application, and the main foot frame 41 is provided, which is the rear arm

580471 25 The rear side is deviated from the center 9 of the vehicle body 2 in the width direction to the side, and is arranged in front of the rear wheels 32 and the rear arm 25 extends downward in the forward and backward direction to make the rear side of the main foot 41 forward The bottom can be reciprocated freely to pivotally support the end portion of the main foot frame 41 to the vehicle body frame 3 or the rear arm 25 in the width direction of the vehicle body 2 so that the end portion on the other side of the main foot frame 41 is more than The one side end portion 41 a is closer to the center 9 of the vehicle body, and the main leg frame 41 is formed. The invention of item 3 of the scope of patent application is the body structure of a saddle-type vehicle such as the scope of item 1 of the patent scope, in which a pair of left and right back braces 7 are provided, and the rear side of the rear arm 25 is moved from the width of the body 2 The body center 9 is deviated to one side, and the one side back support 7 of the left and right back supports 7 and 7 is used to pivotally support the upper end of the buffer 28. The invention of the fourth scope of the patent application is the body structure of a saddle-type vehicle such as the third scope of the patent application, and a support body 69 is provided, which is combined with the above-mentioned body frame 3 to support the battery power source 51. The battery power source 51 and the support 69 are disposed between the left and right back supports 7 and 7, and the support 69 is coupled to the back supports 7 and 7, respectively. [Embodiments of the invention] Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 in Fig. 1 is a saddle-type vehicle, and specifically an example of an electric two-wheeled vehicle. The arrow Fr indicates the front of the vehicle 1, and the following left and right are the width directions of the vehicle body 2 of the vehicle 1 pointing forward. The vehicle body frame 3 of the above vehicle body 2 has a head pipe 5 which constitutes a front upper shaft axis 4 which extends longitudinally and protrudes forward and downward; a pair of left and right lower pipes 6, 6 (4)

580471, which extends backward from the head pipe 5; a pair of left and right back braces 7, 7, which extend upward from the protruding ends of these lower pipes 6, 6, and the upper frame 8, which are connected to each other In combination with the protruding ends of these back braces 7, 7, the above-mentioned vehicle body frame 3 is formed on the basis of an imaginary vertical plane passing through the vehicle body center 9 in the width direction of the vehicle body 2 to form a left-right symmetrical shape. The upper end portions of the left and right lower tubes 6, 6 are fixed to the middle portion of the head tube 5 in the longitudinal direction and the left and right side portions thereof. The upper portions of the left and right lower tubes 6, 6 are formed from the head tube 5 side compartment to the rear and downward, and are separated from each other in the width direction of the vehicle body 2. The lower portions of the left and right lower tubes 6, 6 extend slightly parallel to each other, and cross each other. Combined. In addition, the left and right back braces 7 and 7 are separated from each other as they move rearward and upward toward each other in the width direction of the vehicle body 2. Without the steering shaft 11, the head tube 5 is embedded in the shaft center 4. The steering shaft 11 is rotatable around the shaft center 4 and is supported by the head tube 5 with a bearing. The front 12 is provided, and it protrudes downward from the lower end portion side of the steering shaft U, and supports the upper end portion at the lower end portion of the steering shaft 11. The front wheel 14 is rotatably supported by the axle 13 under the extended end of the front 12 and the front fork 12 has a bumper 15. A resin front fender 17 is provided, which covers the front wheels 14 from above. The front fender 17 is fixedly supported by the lower end β of the front fork 12 with a lock 18. On the one hand, the steering device is supported by a support device 21 20 is foldably supported on the upper end of the steering shaft. A rear arm 25 is installed behind the joint end 24 of the extended ends of the left and right lower pipes 6 and 6 and the lower ends of the left and right back floors 7, 7 and extends straight in the forward and backward directions. A pair of left and right brackets 27 and 27 are protruded at the joint portion 24, and a locust support shaft 26 is mounted on these brackets 27 and 27. Put the above rear arm 25 on the rear side (5) (5)

It can swing freely and support the front end portion of the rear arm 25 to the coupling portion 24 by the brackets 27 and 27 by the pivot shaft 26. The rear wheel 32 is rotatably supported on the rear end of the rear arm 25 by the axle 31. A rear fender 33 made of resin is provided to cover the rear wheel 32 from above, and the rear fender 3 3 is a front and rear lock member 3 4 and 3 5 which can be detachably fixed and supported on the rear arm 25. A bumper 28 is provided, which is arranged behind the back braces 7 and 7 and extends linearly downwards above and behind the rear arms 25. The upper end portion of the bumper 28 is supported by the middle portion in the longitudinal direction of the back support 7 by a pivot shaft 29, and the lower end portion of the buffer 28 is supported by the other pivot shaft 29 in the middle portion in the front-rear direction of the front end portion of the rear arm 25 . Viewed from the side of the vehicle 1 (Fig. 1), the back supports 7, 7 extend straight from the joint portion 24 rearward and upward, and the upper end of the bumper 28 is supported by the pivot shaft 29 in such a straight line. The protruding portions of the back supports 7 and 7 (the lengthwise middle portion of the back supports 7). The lower end of the buffer 28 is supported by other pivot shafts 29 at a slightly center between the pivot shaft 26 at the front end of the rear arm 25 and the axle 31 of the rear wheels 32. The width direction of the vehicle body 2 is described above. The wheels 14 and the rear wheels 32 are arranged on the center 9 of the vehicle body. The body frame 3 of the vehicle body 2 is supported on the enemy road surface 36 by the front wheels 14 and the rear wheels 32. The rear side of the rear arm 25 pivotally supporting the lower end of the bumper 28 is deviated from the vehicle body center 9 to one side (left side), and is arranged on one side (left side) of the rear wheel 32. The rear wheel 32 is unilaterally supported by the rear end of the rear arm 25 with the axle 31. 580471

The upper end portion of the bumper 28 is supported by the pivot shaft 29 in the left and right back braces 7 and 7, the one side (left side) back brace 7, and the lower end portion of the bumper 28 is connected with the other The pivot shaft 29 is supported on the rear side of the rear arm 25 that is deviated to one side (left side) from the center 9 of the vehicle body. The riding seat cushion 38 of the knight 37 is supported on the upper frame 8 of the vehicle body frame 3 described above. The footrest 39 for the knight 37 riding on the seat cushion 38 is supported at the rear of each of the lower tubes 6.

A main tripod 41 is provided, which is arranged near the lower arm of the rear arm 25 to protrude forward and backward, so that the rear side of the main tripod 41 can rotate back and forth freely forward and backward, and the front end of the main leg 41 is supported on the rear arm by a pivot shaft 42 25. The rear arm 25 is urged by the spring 43 in the direction of return rotation (indicated by a solid line arrow in FIG. 1). At this time, the above-mentioned tripod 41 may also be supported by the vehicle body frame 3 with the pivot shaft 42.

In particular, in FIG. 2, the above-mentioned main stand 41 is formed into a shape in which the dimension of the vehicle body 2 in the width direction increases from the front end portion side toward the rear end portion side. The other side (right side) end portion 41b is closer to the vehicle body center 9 than the one side (left side) end portion 41a of the rear end portion (rotating end portion) of the main leg 41, and the main body 9 The tripod 41 is formed into a left-right asymmetric shape around the center 9 of the vehicle body. When the vehicle 1 stops, the spring 43 is resisted from turning in the direction (shown by a chain arrow in FIG. 1), and the main leg 41 is grounded at the turning end of the road surface 36. The tripod 41 can stand on the driving road 36 (point chain in FIG. 1). A motor 45 is provided as the driving source for the vehicle 1 described above. The motor 45 and the rear wheel 32 are arranged on the same axis, supported by the rear end of the rear arm 25, and the rear wheel 32 is connected to the motor 45 Output shaft. Set -10- 580 471 580471

⑺ brake device 46, 俾 can stop the rear wheel 32. The brake device 46 includes: a drum brake 47 which is disposed coaxially with the rear wheel 32; and a brake operating device 48 which is capable of transmitting the brake 47 to the brake operator by transmitting eight brake operating forces. The above-mentioned vehicle 1 is provided with a battery power source 51, which is arranged between the left and right backrests 7, 7 as viewed from the side of the vehicle body 2, and the backrests 7 project slightly parallel to each other 'from below The support device 52 is detachably supported by the vehicle body frame 3. An electric or electronic vehicle constituent device 53 is electrically connected to the battery power source 51 described above. A main switch 54 is further provided to allow the device 53 to be electrically disconnected from the battery power source 51. The main switch 54 is supported by the vehicle body frame 3 with a support device 55. A resin cover 56 is provided. The cover 56 is openable and closable from the front, and covers the battery power supply 51 and the supporting device 55, and is detachably supported by the back stay 7 of the vehicle body frame 3. The filling machine 53 includes a controller 58 for electronically controlling the electric motor 45 described above: a headlight 59 to illuminate the front of the vehicle 1; and a meter 60. In FIGS. 3 to 5, the machine 53 includes a controller (BMC) 62 to electronically control the battery power source 51, a wire harness 63 extending from the controller 62, and a coupler 66, which is connected to the wire harness 63. To each of the extension ends of the electric wire bundle 64 extending from the controller 58 and the electric wire bundle 65 extending from the headlight 59 and the meter 60 through the lower tube 6; etc. β The supporting device 52 is made of resin The support body 69 is arranged between the back supports 7 and 7 below the battery power source 51 and supports the battery power source 51 from below. The support 69 has a rectangular cylindrical body 71 in cross section, which is arranged at -11 ·

580471 Between the lower parts of the above-mentioned back supports 7, 7 viewed from the side of the vehicle body 2 (Figures 1, 3), the shaft center 70 extends upwards and downwards in parallel with the above-mentioned back supports 7, 7; the cutting body 72, It is supported by the cylindrical body 71, and the internal space of the cylindrical body 71 is cut into two parts, and the flange 73 is integrally protruding from the outside of the cylindrical body 71. The upper space of the cut-off body 72 of the support body 69 surrounds the upper space 74 which is opened upward and rearward by the upper portion of the cylindrical body 71, and the lower space of the cut-off body 72 is enclosed by the lower portion of the cylindrical body 71 and opens forward and downward. Lower space 75. -Brackets 77 are protruded from the lower portions of the back supports 7, 7 respectively, and the flanges 73 are locked to these brackets 77 by lock members 78, and the left and right sides of the support body 69 are coupled to the backs. Buildings 7 and 7 lower part "The lower end portion of the battery power source 51 can be freely inserted from above into the space 74 above the support body 69, and the battery power source 51 can be detachably supported on the support 雔 69. On the one hand, the lower space 75 of the support body 69 is arranged near (directly below) the support body 69 as a storage space 80, which is a controller 62 and a coupling 66 for at least a part of the above-mentioned machine 53. And the respective protruding portions of the wire harnesses 63 to 65 protruding from these, the controller 62 and the coupler 66 are detachably mounted on the support 69. When the battery power source 51 is detachably supported on the support body 69 as described above, the battery power source 51 is automatically and freely connected to the controller 62 β. The cover 56 connects the battery power source 5 and the support body. 69 is integrally openable and closable from the front, and the cover 56 is attached to the lower end portion 82 of the lower end portion 82 of the storage space 80 to open and close freely from below. The main switch 54 is operated, and the battery power source 51 is electrically connected to the device-12. 580471 (9) ϋΓΓΓΙΙΙ. With the BTfi 53 ', the electric power is supplied from the battery power source 51 to the drive motor 45 by the above-mentioned device 53. i can travel on the road 36. During driving, the knight π steers and operates the handlebar 20, and steers the direction of the front wheel 14 from the handlebar 20 through the steering shaft 11 and the front and 12, and then transmits the impact and impact force of the road 36 to the vehicle 1 through the front wheel 14 side. The bumper 15 of the previous 12 and the bumper 28 of the above-mentioned rear wheel 32 buffer. According to the above-mentioned structure, when viewed from the side of the vehicle 1, the back support 7 is linearly extended from the coupling portion 24 rearward and upward, and the upper end portion of the bumper 28 is pivotally supported by the protruding portion. Therefore, 'From the side of the vehicle body 2, since the sides of the back brace 7, the rear arm 25, and the bumper 28 form a straight triangle, when the vehicle 1 is traveling, the impact force is borrowed from the rear wheel 32 from the driving road surface 36 side. When added to the back support 7, the rear arm 25, and the bumper 28, these impact forces are supported by the axial force in the back support 7, the back arm 25, and the bumper 28, respectively. In this case, in particular, the above-mentioned back support 7 can achieve higher strength than the previous bending ', and the weight of the back support 7 can be relatively reduced. Therefore, the strength of the vehicle body frame 3 having the above-mentioned back support 7 can be increased. In addition, the weight of the vehicle body frame 3 can be reduced, and the handling operation of the vehicle is relatively easier. As also mentioned above, the lower end of the bumper 28 is pivotally supported by the pivot shaft 26 at the front end of the rear arm 25, and is slightly centered with the axle 31 of the wheel 32 behind the rear end of the rear arm 25. Therefore, the lever ratio of the pivot fulcrum of the lower end portion of the bumper 28 swinging about the pivot support shaft 26 as the center is suppressed to about 2, so the rear wheel 32 side is added to the rear end portion of the rear arm 25 according to the above. The external force, which is added to the back floor 7 by the buffer 28, is suppressed to about 2 times. -13- 580471

(ίο) Therefore, the strength of the above-mentioned back support 7 can be relatively reduced, the back support 7 can be made lighter, and the handling operation of the vehicle 1 is easier. As described above, in the width direction of the vehicle body 2, the other side end portion 4ib is closer to the vehicle body center 9 than the one side end portion 41a of the main frame 41, and the main frame is placed. 41forming. Therefore, it is possible to prevent the end portion 41b on the other side of the main tripod 41 from protruding to the outside. Furthermore, one side end portion 41a of the main tripod 41 protrudes more outwardly than the other side end portion 4 1b. However, the rear side of the rear arm 25 is disposed on the one side. The presence of the arm 25 can prevent only the one-side end portion 41 a from protruding to the outside. Therefore, during the processing operation of the vehicle 1, it is possible to prevent the ends 4U, 4 lb of the above-mentioned main stand 41 from interfering with the operator, making the above-mentioned processing operation easier. As described above, the upper end portion of the bumper 28 is pivotally supported in the left and right back stays 7 and 7, and the one side back stay 7 is pivoted. Therefore, both the upper and lower end portions of the bumper 28 are deviated sideways from the center 9 of the vehicle body, so the buffer 28 is more parallel to the center 9 of the vehicle body. Therefore, since the component force in the width direction of the vehicle body 2 which is added to the back support 7 by the buffer 28 can be suppressed to be small, the strength of the back support 7 can be reduced and it can be made lighter. As described above, the battery power supply 51 and the support 69 are arranged between the left and right back supports 7, 7, and the support 69 is coupled to the back supports 7, 7β, respectively. Therefore, the support 69 supporting the battery power 51 is used. As the reinforcing material for each of the above back supports 7, the strength of each of the above back supports 7 can be achieved by a simple structure. 14-580471

Its improvement. As a result of this increase in strength, the aforementioned back supports 7 can be made lighter. The above is an example according to the drawing, but the vehicle 1 may be three-wheeled. In addition, the driving source of the vehicle can also be an internal combustion engine, and the internal combustion engine can also be supported on the vehicle body frame 3 separately from the rear arm 7 5. [Effects of the Invention] The effects according to the present invention are as follows.

The invention of item 1 in the scope of patent application is a body structure of a saddle-type vehicle. Its body frame 3 has: a down tube that extends from the head tube to the lower back; and a back support that extends from the bottom tube. The projecting end portion extends upward and rearward; behind the joint portion of the projecting end portion of the lower tube and the lower end portion of the back brace, a rear arm is linearly extended forward and backward, so that the rear side of the rear arm is greater than the front end portion. It can swing up and down freely, and support the front end of the rear arm to the above-mentioned joint with a pivot axis. A bumper is provided, which is linearly extended behind the back support and tilted backward and downward. The upper end of the bumper is pivoted. Supported on the back support, on the one hand, the lower end of the bumper is pivotally supported on the rear side of the rear arm, and the rear wheel is supported on the rear end of the rear arm by an axle.

Viewed from the side of the vehicle, the back brace projects linearly from the coupling portion rearward and upward, and the upper end portion of the bumper is pivotally supported by the protruding portion. Therefore, when viewed from the side of the vehicle body, the sides of the back brace, the rear arm, and the bumper form a straight triangle. Therefore, when the vehicle is traveling, the rear wheel is applied from the side of the road surface to apply an impact force to the back brace and the rear. In the case of an arm and a bumper, these impact forces are supported by the above-mentioned back support, rear, and bumper with axial force, respectively. At this time, especially the earthen back brace can achieve higher strength than the previous one, and can relatively reduce the weight of the back brace. • 15 · (12) Therefore, the strength of the vehicle body frame with the above-mentioned back support can be increased. In addition, the weight of the vehicle body frame can be reduced, and the handling operation of the vehicle is relatively easier. The invention of item 2 of the scope of patent application is the body structure of a saddle-type vehicle such as the one of scope of the patent application. The main foot frame is provided to move the rear side of the rear arm from the center of the body to the body width direction. Displaced sideways, placed in front of the rear wheels and protruding forward and backward in the lower direction of the rear arms, allowing the rear side of the main leg to rotate back and forth freely, and pivotally supporting the front end of the main leg to the vehicle body The frame or the rear arm is formed in the width direction of the vehicle body such that the other end portion of the main foot frame is closer to the center of the vehicle body than the one end portion of the main foot frame. Therefore, it is possible to prevent the end portion on the other side of the main tripod from protruding to the outside. Furthermore, one side end of the main tripod protrudes more outwardly than the other side end, but the rear side of the rear arm is disposed on the one side. The presence of the rear arm can prevent Only the above-mentioned one end portion protrudes to the outside. Therefore, during the processing operation of the vehicle, it is possible to prevent the ends of the main tripod from interfering with the operator, and make the above processing operation easier. The invention in claim 3 of the patent scope is the body structure of a saddle-type handlebar in the scope of patent application 2, in which there is a pair of left and right back tags, and the rear side of the rear arm is from the width of the vehicle. The center is deflected to one side and supports the upper end of the bumper in the left and right backs. Therefore, the upper and lower end portions of the bumper are offset from the center of the vehicle body to one side, so the buffers are more parallel to the center of the vehicle body.

580471 Therefore, since the width direction / knife force of the car body added by the buffer to the back support can be suppressed to be small, the strength of the back support can be reduced, and it can be made lighter. The invention of item 4 of the patent application is the body structure of a saddle-type vehicle such as the item 3 of the patent application, and a support is provided therein. The support is combined with the frame of the vehicle body to support the battery power source. The support is disposed between the left and right back supports, and the support is coupled to each of the back supports, respectively. Therefore, the support for supporting the battery power source is used as a reinforcing material for the above-mentioned back supports, so the above-mentioned back supports can be improved in strength by a simple structure. As a result, the strength can be made lighter. [Brief description of the drawings] FIG. 1 is an overall side view of the vehicle. Fig. 2 is a rear plan view of the vehicle. FIG. 3 is a partially enlarged sectional view of FIG. 1. FIG. 4 is a partial cross-sectional view taken along the line 4-4 in FIG. 3. FIG. FIG. 5 is a partial cross-sectional view taken along the line 5-5 in FIG. 3. FIG. Schematic representation of symbols 1 · · · Vehicle 2 · · · Body 3 · · · Car frame 5 · · · Head tube · · · Down tube 7 · · · Back support • 17- 580471 (14) 9 · · • Body center 11 · · · Steering shaft 12 · · · Front fork 14 · · · Front wheel 24 · · • Joint 25 · · • Rear arm 26 · · • Pivot shaft 28 · · • Punch 31 • • • Axle 32 • • • Rear wheel 36 • • • Driving surface 38 • • • Seat cushion 41 • • • Tripod 41a • • • End portion 41b • • • End portion 51 • • • Battery power supply 52 • • • Support device 53 • • • Machine 55 • • • Support device 56 • • • Cover 69 • • • Support 80 • • • Storage space 82 • • • Lower end

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Claims (1)

Apply for patent Fan Jie A body structure of a saddle-type vehicle, the body frame of which has: a down tube, which extends from the head tube to the back and down; and a back support, which is backward from the protruding end of the lower tube Those who extend upward; behind the joint between the extended end of the lower tube and the lower end of the body brace, a rear arm is provided to extend straight in the forward and backward direction so that the rear side of the rear arm can swing up and down freely than the front end. The front end of the rear arm is supported by the pivot with a pivot axis, and a bumper is provided, which is linearly extended behind the back support and tilted backward and downward, and the upper end of the bumper is pivotally supported on the back support. On the one hand, the lower end portion of the bumper is pivotally supported on the rear side of the rear arm, and the rear wheel is supported on the rear end portion of the rear arm by an axle. From the side of the vehicle, the rear portion of the rear portion is linearly extended from the back to the rear. The upper end of the buffer is pivotally supported on the protruding portion. For example, the body structure of a saddle-type vehicle of item 1 of the patent application, which includes a main tripod, which positions the rear side of the rear arm from the center of the vehicle width direction to the side, and is arranged at the rear The front of the wheel and the front and rear direction of the rear arm protrude forward and backward so that the rear side of the main tripod can rotate back and forth freely to pivotally support the front end of the main tripod to the body frame or the rear arm, and In the width direction, the end portion on the other side of the main leg is closer to the center of the vehicle body than the one end on the one side, and the main leg is formed. For example, the body structure of a saddle-type vehicle in the scope of patent application, where A pair of left and right back supports is provided, and the rear side of the rear arm is offset from the center of the body width to the side of the car body. The back supports on the one side of the left and right back supports support the buffer. Upper end. For example, the body structure of a saddle-type vehicle of the third scope of the application for a patent, which includes a support body, which is combined with the above-mentioned body frame to support the battery power, and the above-mentioned battery power and support are arranged on the left and right back supports. Between, respectively-the aforementioned support is bonded to each of the aforementioned back supports.