JPWO2004078574A1 - Suspension method for rear-wheel drive device of straddle-type vehicle and straddle-type vehicle - Google Patents

Abstract

A step of inserting a rod-shaped member having the same cross-sectional shape as the first opening formed in the connecting member and the second opening formed in the rear wheel drive device into the two openings, and a state in which the rod-shaped member is inserted The step of fixing the connecting member to the rear wheel drive device via the elastic body and the step of swingably assembling the connecting member fixed to the rear wheel drive device to the vehicle body frame in this step are performed.

Description

  The present invention relates to a suspension method for a rear wheel drive system of a saddle-ride type vehicle and a saddle-ride type vehicle in which a rear wheel drive system is suspended on a vehicle body via a connecting member rotatable about a pivot shaft.

In a straddle-type vehicle typified by a motorcycle such as a scooter, when a drive unit configured by assembling an engine and a rear wheel drive device is suspended on a vehicle body, a connecting member for connecting the vehicle body and the drive unit to the drive unit is used. Precise initial assembly angle is required. Therefore, various techniques have been conventionally disclosed.
For example, according to the first conventional example: Japanese Utility Model Laid-Open No. 54-101757, an inner hole of a rubber bush (a cushioning member such as) used for a vehicle body side or a drive unit side shaft supporting portion of a connecting member of a drive unit suspension device. Disclosed is a suspension unit for a drive unit, which has a rectangular cross section, and an outer shape of a pin engaging with the rubber bush is a rectangular cross section corresponding to the shape of the rubber bush.
A second conventional example: Japanese Patent Application Laid-Open No. 5-65091 discloses a suspension device for a scooter, which is intended to prevent the engine from being pushed up when the vehicle is accelerated or decelerated.
According to the suspension device of the second conventional example, the suspension device is suspended at a position substantially coincident with the direction of the resultant force of the first force acting forward of the vehicle body and the second force acting upward as a reaction force of the driving force or braking force of the wheels. A suspension shaft is provided between the bracket and the body frame.
In the above-mentioned conventional technique, there is a problem in that positioning is difficult when connecting the drive unit suspension devices, and an error occurs in the accuracy.
The present invention has been made in view of the above problems, and a rear straddle-type vehicle capable of accurately and easily assembling a connecting member to a rear wheel drive device or a vehicle body frame at an initial assembling angle. An object of the present invention is to provide a suspension method for a wheel drive device and a saddle type vehicle.

To achieve the above object, according to the first aspect of the present invention, a driving force generated by a prime mover is applied to a rear wheel of a connecting member that is swingably supported by a body frame about a pivot shaft as a rotation center. A mounting method for mounting a rear wheel drive device for transmission, wherein a first opening formed on the connecting member and a second opening provided on the rear wheel drive device are attached so as to be coaxial with each other. A step of inserting a rod-shaped member having an outer diameter dimension substantially the same as an inner diameter dimension of the first and second openings into the first and second openings, and the rod-shaped member of the first and second openings. Fixing the connecting member to the rear wheel drive device through an elastic body in a state of being inserted into the opening, the rear wheel drive device being parallel to the pivot shaft and being attached to a suspension shaft on the connecting member. The gist of the invention is that it is supported by a suspension and is swingable around the suspension shaft.
In order to achieve the above object, according to the second aspect of the present invention, the driving force generated by the prime mover is applied to the connecting member which is swingably supported by the body frame about the pivot shaft as a rotation center. And a second opening formed in the vicinity of the pivot shaft of the vehicle body frame, the first opening formed in the vicinity of the pivot shaft of the connecting member. And a step of inserting a rod-shaped member having an outer diameter dimension substantially the same as the inner diameter dimension of the first and second openings into the first and second openings, and the rod-shaped member with the first and second holes. The gist of the present invention is to perform a step of fixing the connecting member to the vehicle body frame via an elastic body while being inserted into the second opening.
In order to achieve the above object, according to a third aspect of the present invention, a straddle-type vehicle is provided, which is a vehicle body frame and a connecting member that is swingably supported by the vehicle body frame about a pivot shaft. And a rear-wheel drive device that is suspended and supported by the connecting member via an elastic body so as to be swingable around a suspension shaft parallel to the pivot shaft, and that transmits the driving force from the prime mover to the rear wheels. The connection member has a first opening near the suspension shaft, and the rear wheel drive device has a second opening near the suspension shaft having an inner diameter substantially the same as the inner diameter of the first opening. The gist is that it has an opening, and the first and second openings are provided at positions that can be coaxial with each other when fixing the connecting member to the rear wheel drive device.
In order to achieve the above object, according to a fourth aspect of the present invention, there is provided a straddle-type vehicle, which is capable of swinging about a vehicle body frame and an elastic body about the vehicle body frame about a pivot shaft. And a rear wheel drive device that is supported by the connection member so as to be swingable about a suspension shaft parallel to the pivot shaft and that transmits the driving force from the prime mover to the rear wheels. The connection member has a first opening near the suspension shaft, and the vehicle body frame has a second opening near the pivot shaft and having an inner diameter substantially the same as the inner diameter of the first opening. The gist is that the first and second openings are provided at positions that can be coaxial with each other when fixing the connecting member to the vehicle body frame.

FIG. 1 is a left side view showing a schematic configuration of a motorcycle which is an example of a straddle-type vehicle to which the present invention is applied.
FIG. 2 is a partial cross-sectional view showing an assembly structure of a drive unit suspension device for a motorcycle according to an embodiment of the present invention.
FIG. 3 is a perspective view showing the configurations of the engine and the frame after the drive unit suspension device is assembled.
FIG. 4 is a side view showing the configuration of the drive unit suspension device according to the embodiment of the present invention.
FIG. 5 is a plan sectional view taken along the line VV of FIG.
FIG. 6 is a perspective view showing a detailed assembly configuration of the drive unit suspension device.
7A to 7D are explanatory views showing an assembling process of the drive unit suspension device according to the embodiment of the present invention.
FIG. 8 is a side view showing the configuration of a drive unit suspension device according to another embodiment of the present invention.

In the present invention, the “body frame” includes various parts fixed to the frame body such as a bracket integrally formed on the body frame body and functional parts.
Further, in the present invention, the “motor” may be an engine or an electric motor, and may be swingably supported by the vehicle body frame or may be fixed so as not to swing.
Further, in the present invention, the “rear wheel drive device” does not include the prime mover when the prime mover is fixed to the vehicle body frame. In this case, the rear-wheel drive device means a power transmission device that transmits power from the prime mover to the rear wheels.
In addition, the "opening" in the present invention may be not only a complete hole or hole, but also a partially cut hole or hole, or a notch. Furthermore, only one notch may be provided. Further, although the first opening penetrates, the second opening may have a concave shape without penetrating.
In the present invention, if the pivot shaft and the suspension shaft are too far apart, the connecting member becomes large (first problem). On the contrary, if the distance between the pivot shaft and the suspension shaft is too short, the accuracy required for the opening becomes high (second problem). Therefore, "near the suspension axis" means that the pivot axis and the suspension axis are provided in consideration of the above first and second problems, and at least a predetermined range centered on the suspension axis of the connecting member. It means inside. This also applies to the “near pivot axis” described below.
In the following, a scooter type motorcycle (hereinafter referred to as a motorcycle) will be described as an example. Further, in the following description, front, rear, left and right are defined with the traveling direction (left side in FIG. 1) of the motorcycle 1 shown in FIG. 1 as the front. Regarding the vertical direction, the top and bottom are defined with the position where the wheel contacts the traveling surface as the lowermost surface. Under the above conditions, one embodiment of the present invention will be described below with reference to the drawings.
<First Embodiment>
Referring to FIG. 1, a steering shaft 3 is rotatably fitted and supported on a head pipe 2 of a motorcycle 1, and above the steering shaft 3, a handle including various instruments including a brake lever, operation switches and the like. 4 is bound. The handle 4 is covered with a handle cover 5 which is a resin cover member. A front fork 7 is provided below the head pipe 2 via an under bracket 6. A front wheel 8 is rotatably supported at the lower end of the front fork 7.
The front part of the portion extending from the steering shaft 3 to the under bracket 6 via the head pipe 2 is covered with a front cover 9, and an inner fender 11 is provided below and behind the front cover 9, while near the upper part of the front wheel 8. Is provided with a front fender 10.
Next, the configurations of the vehicle body frame and the drive unit of the motorcycle 1 will be described with reference to FIGS. 1 to 3.
Since the purpose of FIG. 2 is to show the structure of the body frame, the description of the cover member that covers the periphery of the body frame and those unnecessary for the attachment structure is omitted.
Also in FIG. 3, omissions are made as appropriate.
The vehicle body frame of the motorcycle 1 extends obliquely downward and rearward from the head pipe 2, and a down tube 13 whose rear side is covered with a leg shield 12 and a lower end of the down tube 13 branch off from the driver's foot. A pair of left and right bottom frames 15L and 15R that support the lower part of the low-floor footboard 14 to be placed, and a first cross frame 16 that connects (crosses) the two branched bottom frames 15L and 15R in the vehicle width direction, The side frames 17L and 17R extending obliquely upward from the rear of the bottom frames 15L and 15R are connected to both the side frames 17L and 17R, and are connected at the uppermost rising edge of the side frame 17R. And the left and right sides are symmetrically arranged to support the seat 18, and while passing through the upper portion of the engine 19 arranged below the seat 18 and descending to reach the side frame 17L. The second cross frame 20 is connected to 17L.
The second cross frame 20 is made of a pipe having a round cross section, descends from the rear along the shape of the lower end of the seat 18, is bent 90 degrees in the vehicle width direction, and is provided at the lower part of the seat 18. A battery box supporting portion 21 for horizontally supporting a battery box 71 for accommodating and mounting a battery is laid across and connected to a side frame 17L.
By using the second cross frame 20 having such a shape, the engine 19 is exposed to the right side of the vehicle body when the seat lower cover 22 is removed, and maintenance of the engine 19 is easy.
As is apparent from the above description, the motorcycle 1 according to the present embodiment has a bilaterally asymmetric frame structure, and the vehicle width of the vehicle body can be reduced by providing the engine 19 below the seat 18. This makes it aesthetically superior.
The detailed configuration of the drive unit will be described below with reference to FIGS. 1 to 3.
The engine 19 is mounted on the lower portion of the seat 18 between the side frames 17L and 17R as described above. Further, a carburetor 192 is connected to the air cleaner 191, and the carburetor 192 is connected to an intake side of a cylinder 194 via an intake pipe 193.
The drive unit is formed by integrally connecting at least an engine 19 and a transmission case 23 containing a rear wheel drive device. A rear wheel 24 is pivotally supported at the rear of the transmission case 23. A rear cushion 25 is provided between the transmission case 23 and the left side frame 17L having a rectangular shape. As described above, the drive unit including the engine 19 and the transmission case 23 forms the swing-type drive unit 200 in which the drive unit itself also vibrates as the vehicle body vibrates.
The swing-type drive unit 200 having the above configuration is connected to the side frames 17L and 17R via the link 100 which is a connecting member, and is swingable up and down about a pivot shaft 101 which is a suspension shaft on the vehicle body frame side. It has a unique configuration.
The detailed configuration of the drive unit suspension device will be described with reference to FIGS.
The link 100, which is a connecting member that connects the side frames 17L and 17R and the swing-type drive unit 200, is made of iron or aluminum. The link 100 is welded to each of the cylindrical portion 31 and the cylindrical portion 31 for passing the pivot shaft 101, which is a suspension shaft on the vehicle body frame side, in the vehicle width direction, and can accommodate the connecting portion of the engine 19 to the link 100. And two bracket-shaped accommodating portions 32 and 33.
Bearings 69 are press-fitted into the left and right ends of the cylindrical portion 31 using appropriate jigs. Specifically, the left side (lower side in FIG. 4) bearing 69 of the motorcycle 1 is first press-fitted, then the spacer 68 is inserted into the cylindrical portion 31, and then the right side (in FIG. 4) is inserted using an appropriate jig. The upper side bearing 69 is press-fitted into the cylindrical portion 31. The spacer 68 needs to be able to rotate smoothly after the bearing 69 is press-fitted.
The bolt 70 is fitted into the cylindrical gap inside the spacer 68 assembled in this way, and the bolt 70 is tightened with the nut 72 with the connecting portion 41 projecting from the first cross frame 16 and the plain washer 71 sandwiched therebetween. The pivot shaft 101 is configured by the above.
That is, the pivot shaft 101 swings by connecting the vehicle body frame and the link 100 by penetrating the connecting portions 41 and 42 provided at positions where the side frames 17L and 17R rise obliquely upward from the bottom frames 15L and 15R, respectively. The primary vibration caused by the vibration of the drive unit 200 (primary vibration) is efficiently absorbed by elastic rotation about the rotation axis of itself.
In the two accommodating portions 32 and 33, the suspension shaft 102 on the engine 19 side and the engine, which are the shafts when the link 100 makes a small vibration (secondary vibration) that slightly moves to absorb the primary vibration during traveling. When the positioning of the engine 19 with respect to the link 100 is performed, a temporary placement shaft 103 for temporarily placing the connecting portion of the engine 19 with respect to the link 100 in the accommodating portions 32 and 33 is provided in the vehicle width direction (direction parallel to the pivot shaft 101). An opening is provided for passage. Among these, the housing portion 32 is formed with a protrusion 321 extending to the rear end portion, and this protrusion 321 has the same diameter as the through hole 199 provided in the boss of the engine 19 when the engine 19 is attached. A positioning hole 104 (first opening) is provided. The positioning hole 104 may be provided on the housing portion 33 side, but in any case, it is provided near the suspension shaft 102.
In the present embodiment, if the pivot shaft 101 and the suspension shaft 102 are too far apart, the link 100 becomes large, while if the distance between them is too short, the accuracy required for the positioning hole 104 and the through hole 199 described later will be high. It gets expensive. Therefore, the term "near the suspension shaft 102" as used herein means that at least the suspension unit 102 or the housing unit 32 is centered around the suspension shaft 102 on the assumption that two shafts are provided in consideration of both of them. Within the range of.
Further, in order to increase the strength of the link 100, the cylindrical crossbars 105 connecting the two accommodating parts are welded to the accommodating parts 32 and 33.
Next, the configuration of the connecting portion of the engine 19 connected to the link 100 will be described. As shown in the partial perspective view of FIG. 6, the connecting portion of the engine 19 includes left and right accommodated portions 195 and 196 accommodated in the bracket-shaped accommodation portions 32 and 33 of the link 100, respectively. Each of the accommodated portions 195 and 196 is a through-hole through which the suspension shaft 102 is inserted when accommodated, and includes an inner and outer cylindrical rubber bush 197 (a cushioning member made of an elastic body) having a housing with an inner diameter and an outer diameter, and a temporary placement shaft. Reference numeral 103 has a grip portion 198 for gripping the elastic member 64 made of a resin such as urethane and having an inner circumference. In addition, a through hole 199 (second opening), which is a positioning means on the engine 19 side corresponding to the positioning hole 104, is provided in the accommodated portion 195 on the left side in the vicinity of the suspension shaft 102. The definition of the neighborhood is as described above.
The outer diameter housing is fixed to the openings formed in the accommodated portions 195 and 196, respectively, by an appropriate means such as press fitting, and the inner hole of the inner diameter housing has a through hole having the same diameter as the bolt 62 serving as the suspension shaft 102. Forming a hole.
A collar 65 is interposed between the elastic member 64 gripped by the grip portion 198 and the bolt 66 that serves as the temporary placement shaft 103.
The procedure of the assembling process when assembling the engine 19 and the link 100 using the drive unit suspension device will be described with reference to FIGS. 7A to 7D.
First, the elastic member 64 having the collar 65 on the temporary placement shaft 103 is placed on the grip 198 of the engine 19 (FIG. 7A).
Next, the through holes of the rubber bushes 197 provided in the accommodated portions 195 and 196 are aligned with the positions of the openings for the suspension shaft 102 provided on the side surfaces of the accommodation portions 32 and 33, respectively. After the bolt 62 (suspension shaft 102) is penetrated in a state where the through hole of the rubber bush 197 and the opening for the suspension shaft are aligned, the nut 63 is fastened to the bolt 62 (suspension shaft 102) for temporary attachment. Perform (FIG. 7B). At this stage, the nut 63 is not completely tightened.
After that, the positioning hole 104 and the corresponding through hole 199 on the engine 19 side are overlapped with each other when viewed from the direction of the suspension shaft 102, and the through pin 81 is inserted into both of them to perform positioning (FIG. 7C). The outer dimensions of the penetrating pin 81 are formed to be substantially the same as the inner diameter dimensions of the positioning hole 104 and the through hole 199.
With the penetrating pin 81 still inserted, the bolt 62, which is the suspension shaft 102, is tightened. By the way, if the diameters of the positioning hole 104 and the through hole 199 are made equal to the diameter of the temporary placement shaft 103, the bolt 66 that passes through for fixing the temporary placement shaft 103 can also be used as the through pin 81 for positioning. Therefore, it is possible to save tools. Further, by making the bolts 62 that pass through to form the suspension shaft 102 equal to the diameter of the bolts 66, these can be covered with the same bolts having the same diameter, and any one of them can be used as the penetration pin. It will be possible to save more tools. Therefore, the work can be performed easily and smoothly.
Then, the through pin 81 is removed, the bolt 66 is passed through the elastic member 64 mounted on the grip portion 198, and the nut 67 is connected and tightened (FIG. 7D).
As a result of the above steps, the weight of the engine 19, the load from the rear cushion 25, and the like finally balance the link 100, and the engine can be easily arranged at a desired position. At this time, the position of the positioning hole 104 on the link 100 side and the position of the through hole 199 on the engine 19 side do not have to coincide with each other. In other words, the positions of the positioning hole 104 and the through hole 199 may be set in advance so that the position of the link 100 with respect to the engine 19 takes an accurate optimum value when this balanced state is reached.
After the positioning of the link 100 with respect to the engine 19 is completed, the pivot shaft 101 is attached to the vehicle body frame. Therefore, the diameter of the positioning hole 104 and the through hole 199 can be made equal to the diameter of the bolt 70 forming the pivot shaft 101, and the bolt 70 can be used as the through pin. It is also possible to first attach the link 100 to the pivot shaft 101 and then perform positioning to the engine 19.
According to the embodiment of the present invention described above, the link and the engine are provided with corresponding positioning holes at the time of connection, so that the initial assembly angle of the link with respect to the drive unit including the rear wheel drive device can be accurately determined. It becomes possible to regulate and easily perform the assembly work.
According to the present embodiment as described above, it is possible to realize a reduction in cost due to a reduction in the work time required for the assembling work.
It should be understood that the present invention should not be understood to exert a unique effect only in the above-described one embodiment.
<Second Embodiment>
Hereinafter, the second embodiment of the present invention will be described with reference to FIG. In the case of the configuration shown in FIG. 8, a bracket 93 for accommodating the link 400 is welded to the vehicle body frame 91, openings are provided in the bracket 93 and the link 400, and these openings are superposed by using a through pin. Thus, the link 400 is positioned with respect to the vehicle body frame 91.
The bracket 93 and the link 400 are provided with a pivot shaft 401, and the rear end of the link 400 is provided with a suspension shaft 402 connecting the link 400 and the rear wheel drive device 500. In the configuration shown in FIG. 8, a tensile force in the linear direction connecting the pivot shaft 401 and the suspension shaft 402 acts on the link 400, and the direction of the main excitation force of the engine becomes a direction perpendicular to the link 400. Are arranged as follows. In addition, in the above-described first embodiment, the engine 19 which is a prime mover constitutes a part of the rear wheel drive device and is swingably supported by the vehicle body frame. However, the present invention is not limited to such a case. It goes without saying that the method is not limitedly applied. That is, in the case shown in FIG. 8, the engine does not necessarily have to form a part of the rear wheel drive device 500. In this sense, the straddle-type vehicle described here is not limited to the one shown in FIG. 1, and may have any structure as long as it has the link mechanism shown in FIG. Good.
A rubber bush, which is an elastic body, is used for the pivotal support portion of the pivot shaft 401, and the outer diameter housing of this rubber bush is fixed to the link 400 by an appropriate means such as press fitting. The suspension shaft 402, on the other hand, is assembled using circular axis pivots and rolling bearings.
The link 400 is provided with the crossbar 405 as in the first embodiment, and also has a stopper 411 that comes into contact with the bracket 93 or the vehicle body frame 91 when swinging upward, and the bracket 93 or the vehicle body frame 91 when swinging downward. Is provided with a stopper 413 that abuts against. In FIG. 8, a spring is provided as the stopper 411 on the upper side, but it is of course possible to provide the same on the lower side. Further, the stopper 411 is in a state of being slightly separated from the bracket 93 or the vehicle body frame 91 during normal traveling (by the way, in FIG. 8, it is assumed that the stopper 411 contacts the bracket 93 during upward swing).
When positioning is performed using such a drive unit suspension device, the through pin 81 is provided with a positioning hole 404 (first opening) provided in the link 400 and a through hole 95 (second opening) provided in the bracket 93. Are overlapped with each other when viewed from the direction of the pivot shaft 401 and the through pin is inserted, and the pivot shaft 401 is first tightened and fixed while the through pin is inserted, and the link 400 is positioned with respect to the vehicle body frame 91.
The positioning hole 404 and the through hole 95 are provided near the pivot shaft 401. The term “near the pivot shaft 401” as used herein has the same meaning as the above-mentioned “near the suspension shaft 102”.
Then, the suspension shaft 402 is tightened to fix the link 400 to the rear wheel drive device 500. Here, as in the above-described embodiment, the link 400 can be first fixed to the rear wheel drive device 500.
By the way, the diameter of the penetrating pin 81 is set to be equal to the diameter of the bolt passing through at least one of the pivot shaft 401 and the suspension shaft 402, as in the above-described embodiment, thereby realizing the saving of tools. You can
According to another embodiment of the present invention described above, it is possible to accurately regulate the initial mounting angle of the link with respect to the vehicle body frame and to easily perform the mounting work.

As is clear from the above description, according to the present invention, the saddle riding that can accurately regulate the initial mounting angle of the connecting member with respect to the rear wheel drive device or the vehicle body frame and can easily perform the mounting work. It is possible to provide a suspension method for a rear wheel drive system of a type vehicle and a saddle type vehicle.
Further, according to the present invention, it is possible to realize a reduction in cost associated with a reduction in the work time required for the assembling work.

Claims (10)

A mounting method for mounting a rear wheel drive device that transmits a driving force generated by a prime mover to a rear wheel, to a connecting member that is swingably supported by a body frame about a pivot shaft as a rotation center,
Attaching a first opening formed on the connecting member and a second opening provided on the rear wheel drive device so as to be coaxial with each other;
Inserting a rod-shaped member having an outer diameter dimension substantially the same as the inner diameter dimension of the first and second openings into the first and second openings;
Fixing the connecting member to the rear wheel drive device via an elastic body in a state where the rod-shaped member is inserted into the first and second openings,
The rear-wheel drive device is characterized in that the rear-wheel drive device is suspended and supported by a suspension shaft on the connecting member in parallel with the pivot shaft and is swingable about the suspension shaft. How to suspend the device. A method for mounting a rear wheel drive system for a straddle-type vehicle according to claim 1, further comprising:
The method further comprising the step of swingably assembling the connecting member fixed to the rear wheel drive device to the vehicle body frame. A mounting method for mounting a rear wheel drive device that transmits a driving force generated by a prime mover to a rear wheel, to a connecting member that is swingably supported by a body frame about a pivot shaft as a rotation center,
A step of associating a first opening formed in the vicinity of the pivot axis of the connecting member with a second opening formed in the vicinity of the pivot axis of the vehicle body frame;
Inserting a rod-shaped member having an outer diameter dimension substantially the same as the inner diameter dimension of the first and second openings into the first and second openings;
Fixing the connecting member to the vehicle body frame via an elastic body in a state where the rod-shaped member is inserted into the first and second openings;
A method for suspending a rear-wheel drive system for a saddle-ride type vehicle, the method comprising: A method for mounting a rear wheel drive system for a saddle-ride type vehicle according to claim 3, further comprising:
Assembling the connecting member fixed to the body frame to the rear wheel drive device so as to be swingable. A saddle type vehicle,
Body frame,
A connecting member supported on the vehicle body frame so as to be swingable about a pivot axis;
A rear wheel drive device that is suspended and supported by the connecting member via an elastic body so as to be swingable about a suspension shaft parallel to the pivot shaft, and that transmits the driving force from the prime mover to the rear wheels.
The connecting member has a first opening near the suspension shaft,
The rear wheel drive device includes a second opening near the suspension shaft, the second opening having an inner diameter substantially the same as the inner diameter of the first opening,
The first and second openings are provided at positions that can be coaxial with each other when fixing the connecting member to the rear wheel drive device. The straddle-type vehicle according to claim 5, wherein the inner diameters of the first and second openings are substantially the same as the outer diameters of the bolts inserted through the pivot shaft. .. The straddle-type vehicle according to claim 5, wherein the inner diameters of the first and second openings are substantially the same as the outer diameters of the bolts inserted through the suspension shaft. .. A saddle type vehicle,
Body frame,
A connecting member which is swingably supported on the vehicle body frame via an elastic body about a pivot shaft;
A rear wheel drive device that is supported by the connecting member so as to be swingable about a suspension shaft that is parallel to the pivot shaft, and that transmits the driving force from the prime mover to the rear wheels.
The connecting member has a first opening near the suspension shaft,
The vehicle body frame has a second opening near the pivot axis, the second opening having an inner diameter substantially the same as the inner diameter of the first opening,
The first and second openings are provided at positions that can be coaxial with each other when fixing the connecting member to the vehicle body frame. The straddle-type vehicle according to claim 8, wherein the inner diameters of the first and second openings are substantially the same as the outer diameters of the bolts passing through the pivot shaft. .. The straddle-type vehicle according to claim 8, wherein the inner diameters of the first and second openings are substantially the same as the outer diameter of a bolt passing through the suspension shaft. ..

Images