TW201838864A - Straddled vehicle - Google Patents

Abstract

Provided is a straddled vehicle which enables greater freedom of design in how components are arranged in the vehicle while ensuring the supporting stiffness of a suspension. The straddled vehicle 1 is provided with: a left main frame 20 and a right main frame 30 each extending in a front-to-back direction of the vehicle; a suspension attachment part 16 whereto a rear suspension 9 is attached; a left suspension-supporting part 25 for connecting the left main frame 20 with the suspension attachment part 16; a right suspension-supporting part 35 for connecting the right main frame 30 with the suspension attachment part 16; and a connection member 40 containing a fiber-reinforced resin, that is, a resin reinforced with fibers, and detachably attached to the left suspension-supporting part 25 and the right suspension-supporting part 35 so as to connect the left suspension-supporting part 25 with the right suspension-supporting part 35.

Description

Straddle type vehicle

The present invention relates to a straddle type vehicle in which a suspension is mounted on the left and right main frames.

As a vehicle in which a suspension is attached to the left and right main frames, for example, the configuration disclosed in Patent Document 1 is known. Patent Document 1 discloses a straddle type vehicle in which a center upper cross frame in which left and right main frames are coupled is connected to a rear shock absorber via a rear damper support portion. Upper end. Further, one end portion (lower end portion) of the rear shock absorber in the longitudinal direction is connected to the swing arm.

In the configuration disclosed in the above Patent Document 1, the rear shock absorber is supported by the center upper side rail in which the left and right main frames are coupled, whereby the support rigidity of the rear shock absorber can be improved. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2014-237347

[The problem that the invention wants to solve]

In the configuration disclosed in the above Patent Document 1, the support rigidity of the rear shock absorber (suspension) can be ensured. However, in order to secure the support rigidity of the suspension, it is necessary to give priority to the configuration of the center upper side beam (beam) to which the suspension is attached. Therefore, in the vehicle, the configuration of other parts is easily restricted.

Therefore, it is required to ensure both the support rigidity of the suspension and the design freedom of the arrangement of the parts in the vehicle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a straddle type vehicle that can ensure the support rigidity of a suspension and also improve the design freedom of the arrangement of parts in the vehicle. [Technical means to solve the problem]

The inventors of the present invention conducted a detailed study on the constitution of the beam as disclosed in Patent Document 1.

In this configuration, the suspension is supported by the rigidity of the beam. The present inventors have focused on the above-described configuration in which the cross member has two functions of ensuring the rigidity of the left main frame and the right main frame and securing the support rigidity of the suspension.

When the rigidity of the beam is lowered, there is a case where the left main frame and the right main frame are deformed to open in the left-right direction of the vehicle due to the force input to the suspension. Thus, when the rigidity of the left main frame and the right main frame is lowered to cause deformation of the left main frame and the right main frame, the support rigidity of the suspension is also reduced. Further, when the rigidity of the cross member is lowered, there is a case where the cross member supporting the suspension is deformed by the force input to the suspension. Thus, when the above-mentioned beam supporting the above suspension is deformed, the support rigidity of the suspension is also lowered.

In view of the above, the inventors of the present invention have studied that a member having a function of securing the rigidity of the left main frame and the right main frame and a function of supporting the rigidity of the suspension are provided in order to improve the design freedom of the arrangement of the parts. member.

In this way, by providing a member having a function of ensuring the rigidity of the left main frame and the right main frame, and a member having a function of supporting the rigidity of the suspension, the design freedom of the support position of the suspension can be improved, and the other can be improved. The design freedom of the configuration of the parts.

On the other hand, in order to ensure the rigidity of the main frame, a rigid member that connects the left main frame to the right main frame is required. However, it is necessary to make the above rigid member not affect the configuration of other parts.

In the course of studying the configuration of the components, the frame, and the like, the inventors of the present invention found that the rigid member is made of a fiber-reinforced resin sheet and is detachable, thereby suppressing other parts. The effect of the configuration also ensures the rigidity of the left main frame and the right main frame. In other words, by making the rigid member a plate-shaped member made of fiber-reinforced resin and being detachable, it is possible to ensure the rigidity of the left main frame and the right main frame, and to improve the design freedom of the components in the vehicle. . Moreover, by making the above-mentioned plate-shaped member into a fiber-reinforced resin as described above, the degree of design freedom of the shape can be improved, and the strength of the plate-shaped member can be improved.

However, the support rigidity of the main function suspension required for the left suspension support portion and the right suspension support portion of the left main frame and the right main frame and the suspension mounting portion, respectively, is secured. By providing the member having the function of ensuring the rigidity of the left main frame and the right main frame and the member having the function of supporting the rigidity of the suspension as described above, the support rigidity of the suspension can be ensured, and the left suspension support portion can be improved. The design of the shape of the right suspension support and the installation position of the suspension.

Therefore, by providing the member having the function of ensuring rigidity of the left main frame and the right main frame and the member having the function of supporting the rigidity of the suspension as described above, and connecting the left main frame to the right main frame The rigid member is a plate-shaped member made of fiber-reinforced resin and is a member that is detachable, and can ensure the support rigidity of the suspension and improve the design freedom of the arrangement of parts in the vehicle.

Based on the results of the research described above, the inventors of the present invention contemplate the following constitution.

A straddle-type vehicle according to an embodiment of the present invention includes: a handle; a steering shaft that rotatably supports the handle; a wheel; a suspension that elastically supports the wheel; a left main frame and a right main frame, and the like Extending in a front-rear direction of the vehicle; a front connecting portion supporting the steering shaft, and connecting the front end of the left main frame to the front end of the right main frame; the rear connecting portion, the left main frame a rear end portion connected to the rear end portion of the right main frame; a suspension mounting portion for mounting the suspension; a vehicle body frame including a left suspension support portion for connecting the left main frame to the suspension mounting portion, and a right suspension support portion to which the right main frame is connected to the suspension attachment portion; and a plate-shaped fiber-reinforced resin left and right connection plate member, which comprises a fiber-reinforced resin obtained by fiber-reinforced resin, and is detachably attached to The vehicle body frame connects at least one of the left main frame and the left suspension support portion to at least one of the right main frame and the right suspension support portion.

Thereby, the left and right connection plate-like members made of the fiber-reinforced resin as the rigid member can be detachably and freely disposed on the vehicle body frame. In addition, the fiber-reinforced resin left and right connecting plate-like members are formed into a plate shape, whereby the fiber-reinforced resin left and right connecting plate-like members can be arranged compactly, so that the degree of freedom in designing other components can be improved. Further, the suspension can be improved by connecting at least one of the left main frame and the left suspension support portion to at least one of the right main frame and the right suspension support portion by the left and right connection plate members made of the fiber-reinforced resin. The support of the suspension at the mounting section is rigid.

Therefore, with the above configuration, the support rigidity of the suspension can be improved, and the degree of design freedom of the arrangement of other parts can be improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The left main frame and the right main frame are connected to the front connecting portion and the rear connecting portion, and are not linearly connected and integrally connected as viewed from the front-rear direction.

Thereby, the design freedom of the arrangement of the parts can be improved for the left main frame and the right main frame.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The fiber-reinforced resin left-right connecting plate-like member is located in the front-rear direction, and at least a part thereof is located in the first region or the second region, and the first region is the left main frame, the right main frame, and the left suspension supporting portion. And a region of the right suspension support portion closer to the suspension mounting portion than the middle of the front connecting portion and the suspension mounting portion, wherein the second region is the left main frame, the right main frame, and the left suspension The support portion and the right suspension support portion are closer to the suspension mounting portion than the middle of the rear connecting portion and the suspension mounting portion.

Thereby, a fiber-reinforced resin left and right connection plate-like member as a rigid member is disposed at a position close to the suspension attachment portion. Thereby, the support rigidity of the suspension at the suspension mounting portion can be further improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The fiber-reinforced resin left-right connecting plate-like member is in the front-rear direction, and one or more of the front-rear direction is located in the first region or the second region, and the first region is the left main frame and the right main frame. The left suspension support portion and the right suspension support portion are closer to the suspension attachment portion than the middle of the front connection portion and the suspension attachment portion, and the second region is the left main frame and the right main vehicle The bracket, the left suspension support portion, and the right suspension support portion are closer to the suspension mounting portion than the middle of the rear connecting portion and the suspension mounting portion.

Thereby, a fiber-reinforced resin left and right connection plate-like member as a rigid member is disposed closer to the suspension attachment portion. Thereby, the support rigidity of the suspension at the suspension mounting portion can be further improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The fiber-reinforced resin left-right connecting plate-like member is located in the first region or the second region in the front-rear direction, and the first region is the left main frame, the right main frame, the left suspension supporting portion, and the above a region of the right suspension support portion closer to the suspension mounting portion than the middle of the front connecting portion and the suspension mounting portion, wherein the second region is the left main frame, the right main frame, and the left suspension support portion And an area of the right suspension support portion closer to the suspension mounting portion than the middle of the rear connecting portion and the suspension mounting portion.

Thereby, a fiber-reinforced resin left and right connection plate-like member as a rigid member is disposed at a position closer to the suspension attachment portion. Thereby, the support rigidity of the suspension at the suspension mounting portion can be further improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The fiber-reinforced resin left-right connecting plate-like member connects the left suspension support portion to the right suspension support portion.

Thereby, a fiber-reinforced resin left and right connection plate-like member as a rigid member is disposed at a position close to the suspension attachment portion. Thereby, the support rigidity of the suspension at the suspension mounting portion can be improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The left and right connection plate-like members made of the fiber-reinforced resin include at least a part of the components constituting the vehicle.

Thereby, it can also be used as a fiber-reinforced resin left and right connection plate-like member and a component constituting a vehicle. As a result, the number of parts of the vehicle can be reduced, and the degree of design freedom of the arrangement of other parts can be improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The fiber-reinforced resin left and right connecting plate-like members include a part of the box-shaped member.

Thereby, the left main frame and the right main frame are connected by a part of the box-shaped members which form the fiber-reinforced resin left and right connection plate-shaped members. Thereby, the rigidity of the left main frame and the right main frame can be improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The direction of the fibers of the fiber-reinforced resin left and right connecting plate-like members is the left-right direction of the vehicle.

Thereby, the rigidity of the left main frame and the right main frame connected in the left-right direction of the vehicle can be improved by connecting the plate-like members to the left and right by the fiber-reinforced resin. Thereby, the support rigidity of the suspension can be improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The fiber-reinforced resin left-right connecting plate-like member includes a plurality of fiber sheets laminated in the thickness direction as the fibers. Thereby, the strength of the fiber-reinforced resin left and right connection plate-like members can be improved.

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. In the left-right connecting plate-like member made of the fiber-reinforced resin, one end portion of the vehicle in the left-right direction is connected to at least two portions separated in the front-rear direction or the vertical direction of the vehicle, and is connected to the left main frame and the left side. At least one of the suspension support portions, the other end portion of the vehicle in the left-right direction is connected to at least two portions separated in the front-rear direction or the vertical direction of the vehicle, and is connected to the right main frame and the right suspension support At least one of the ministries.

Thereby, the fiber-reinforced resin left and right connection plate-like members can be more firmly fixed to at least one of the left main frame and the left suspension support portion, and at least one of the right main frame and the right suspension support portion. Thereby, the rigidity of the left main frame and the right main frame can be further improved by connecting the plate-like members to the left and right by the fiber-reinforced resin. Further, by fixing the fiber-reinforced resin left and right connecting plate-like members to the left main frame and the right main frame at two or more positions, the rigidity of the left main frame and the right main frame can be improved. .

According to another aspect, the straddle type vehicle of the present invention preferably comprises the following configuration. The fiber-reinforced resin left and right connecting plate-like members are connected to at least one of the left main frame and the left suspension support portion, and at least one of the right main frame and the right suspension support portion by bolts By.

Thereby, the fiber-reinforced resin left and right connection plate-shaped members can be detachably connected to at least one of the left main frame and the left suspension support portion, and at least one of the right main frame and the right suspension support portion.

The technical terms used in the present specification are used only to define specific embodiments, and are not intended to limit the invention by the above-mentioned professional terms.

"and/or" as used in this specification includes all combinations of one or more of the associated listed.

In the present specification, the use of "including," "comprising" or "having", and the like, is used to describe the features, processes, elements, compositions and The existence of equivalents, or equivalents thereof, may be specified to include one or a plurality of the steps, acts, elements, components, and/or the like.

In this specification, the terms "attached", "connected", "coupled" and/or equivalents are used in the broad sense and include both "directly and indirectly" installation, connection and combination. . Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or combinations, and may include direct or indirect electrical connections or combinations.

All terms (including technical terms and scientific terms) used in the specification have the same meaning as commonly understood by those skilled in the art to which the invention belongs, unless otherwise defined.

Terms defined by commonly used dictionaries are to be interpreted as having meaning consistent with the meaning of the related art and the context of the present disclosure, and as long as it is not explicitly defined in this specification, it is not necessary to be idealized or overly formalized. Explanation.

In the description of the present invention, it is understood that there are several techniques and processes. Each of these individuals has an individual interest and may be used separately from one or more of the other disclosed technologies or, as appropriate, with all other disclosed technologies.

Therefore, for the sake of clarity, in the description of the present invention, all possible combinations of the various steps are unnecessarily repeated. However, with regard to the specification and the scope of the patent application, it is understood that such combinations are all within the scope of the invention.

In the present specification, an embodiment of the straddle type vehicle of the present invention will be described.

In the following description, numerous specific examples are set forth to provide a complete understanding of the invention. However, it is understood by those skilled in the art that the present invention may be practiced without such specific examples.

Therefore, the following disclosure is intended to be illustrative of the invention, and is not intended to

[Definition of loading and unloading] In the present specification, the detachment means that the members are connected to each other in a detachable state. Therefore, as long as the members can be detached from each other, fitting, joining, welding, welding, and the like are also included in addition to the bolt fastening.

[Definition of Integrated Connection] In the present specification, the term "integrally connected" means that the connected members are integrally formed with the connecting portions that connect the members to each other.

[Definition of Linear Connections] In the present specification, the term "linear connection" includes not only a configuration in which a plurality of members are connected by a connecting member extending linearly, but also includes the above-described connecting member when viewed from the left-right direction. The composition of a plurality of components overlapping.

[Definition of Plate-Shaped Member] In the present specification, the plate-shaped member includes not only a member of a flat plate but also a member composed of a plate. Further, the plate-like member also includes an assembly obtained by arranging a frame-shaped member, a rod-shaped member, and a plurality of rod-shaped members in parallel with each other. That is, the plate-shaped member means a member whose width is larger than the thickness and which can connect a plurality of members.

[Definition of Fiber Direction] In the present specification, the fiber direction means the longitudinal direction of the fiber. In the fiber sheet formed into a sheet shape using fibers, the longitudinal direction of the fibers contained in the fiber sheet corresponds to the fiber direction. In the case of a sheet-like member in which fibers are arranged in an intersecting manner, the direction in which the fibers are crossed is referred to as the fiber direction.

[Definition of a straddle type vehicle] In the present specification, a straddle type vehicle is a vehicle in which a rider rides on a seat in a state of sitting on a seat. Therefore, in the straddle type vehicle, the two-wheeled vehicle does not need to be rumored, and other vehicles such as tricycles and four-wheeled vehicles are also included as long as the rider rides on the seat in a state of sitting on the seat. Also, the straddle type vehicle also includes a Scooter type vehicle. [Effects of the Invention]

According to the straddle type vehicle according to an embodiment of the present invention, both the support rigidity of the suspension and the design freedom of the arrangement of the parts in the vehicle can be improved.

Hereinafter, each embodiment will be described with reference to the drawings. In the respective drawings, the same reference numerals are given to the same parts, and the description of the same parts is not repeated. Further, the dimensions of the constituent members in the respective drawings do not faithfully express the dimensions of the actual constituent members, the dimensional ratio of each constituent members, and the like.

Hereinafter, the arrow F in the figure indicates the front direction of the vehicle. The arrow U in the figure indicates the direction above the vehicle. The arrow R in the figure indicates the right direction of the vehicle. The arrow L in the figure indicates the left direction of the vehicle. Further, the directions of the front, rear, left, and right respectively mean the direction of the front, rear, left, and right when the rider of the vehicle is observed.

(Embodiment 1) <Overall Configuration> Fig. 1 is a side view showing the overall configuration of a vehicle 1 according to a first embodiment. 2 is a left side view showing a schematic configuration of the vehicle, and a plan view showing a state in which the connecting member is attached to the main frame from above. The schematic configuration of the vehicle 1 will be described with reference to Figs. 1 and 2 .

The vehicle 1 is, for example, a locomotive, and includes a vehicle body 2, a front wheel 3, and a rear wheel 4 (wheel). The vehicle body 2 includes a fuel tank 5, a handle 6, a seat portion 7, a power unit 8, a rear suspension 9, a vehicle body frame 10, and a rear arm 14.

The vehicle body frame 10 supports components such as the oil tank 5, the handle 6, the seat portion 7, the power unit 8, the rear suspension 9, and the rear arm 14. The rear arm 14 is rotatably supported by the rear wheel 4 by the rear end portion, and is supported by the vehicle body frame 10 via the rear suspension 9.

The body frame 10 has a head pipe 11, a main frame 12 (body frame), and a rear frame 13.

The head pipe 11 is located at the front of the vehicle 1 and rotatably supports the steering shaft 6a connected to the handle 6. The head pipe 11 is connected to the front end of the main frame 12.

As shown in FIGS. 2 and 3, the main frame 12 is coupled to the head pipe 11 so as to extend from the head pipe 11 toward the rear of the vehicle. The main frame 12 has a left main frame 20 and a right main frame 30. The left main frame 20 and the right main frame 30 are each formed in a plate shape extending in the front-rear direction of the vehicle.

In detail, in the present embodiment, the left main frame 20 has a left main frame front portion 21 that extends rearward and downward from the head pipe 11 and a left main frame rear portion 22 that is from the left main frame. The rear portion of the front portion 21 extends downward. Further, the right main frame 30 has a right main frame front portion 31 extending rearward and downward from the head pipe 11 and a right main frame rear portion 32 facing downward from the rear main frame front portion 31 rear end portion extend.

The front ends of the left main frame 20 and the right main frame 30 are respectively connected to the head pipe 11. That is, the front end portion of the left main frame front portion 21 of the left main frame 20 is connected to the front end portion of the right main frame front portion 31 of the right main frame 30. The main frame 12 has a front connecting portion 12a that connects the front end portion of the left main frame front portion 21 with the front end portion of the right main frame front portion 31.

Further, the rear end portion of the left main frame rear portion 22 of the left main frame 20 and the rear end portion of the right main frame rear portion 32 of the right main frame 30 are connected by the cross members 17 extending in the left-right direction. The main frame 12 has a rear connecting portion 12b that connects the rear end portion of the left main frame rear portion 22 with the rear end portion of the right main frame rear portion 32.

The main frame 12 is in the front-rear direction, and has an intermediate portion 12c between the front connecting portion 12a and the rear connecting portion 12b. In the intermediate portion 12c, the left main frame 20 and the right main frame 30 are not linearly connected and integrally connected as viewed from the front-rear direction. In other words, the left main frame 20 and the right main frame 30 are connected to portions other than the front connecting portion 12a and the rear connecting portion 12b, and are not linearly connected and integrally connected as viewed from the front-rear direction.

Thereby, the main frame 12 is connected between the left main frame 20 and the right main frame 30, and has a housing space portion 12d at a central portion in the front-rear direction. A tank 5 and an air cleaner (not shown) are disposed in the accommodating space 12d. Further, although not specifically illustrated, a fuel tank body, an air cleaner, and the like are disposed inside the oil tank 5.

As described above, the left main frame 20 and the right main frame 30 are connected to portions other than the front connecting portion 12a and the rear connecting portion 12b, and are not linearly and integrally connected as viewed from the front-rear direction, whereby the parts are The configuration is not easily restricted. Therefore, the design freedom of the parts for the configuration of the main frame 12 can be improved.

Rear arms 14 are rotatably supported at the rear of the left main frame 20 and the right main frame 30. That is, the left main frame rear portion 22 and the right main frame rear portion 32 are respectively located to the left and right of the front end portion of the rear arm 14, and the front end portion of the rear arm 14 is rotatably supported.

The main frame 12 has a left suspension support portion 25 that extends rearward and upward from the left main frame 20, and a right suspension support portion 35 that extends rearward and upward from the right main frame 30.

The front end portion of the left suspension support portion 25 is fixed to the left main frame 20. The left suspension support portion 25 extends rearward and upward from the connection portion between the left main frame front portion 21 and the left main frame rear portion 22. The front end portion of the right suspension support portion 35 is fixed to the right main frame 30. The right suspension support portion 35 extends rearward and upward from the connection portion between the right main frame front portion 31 and the right main frame rear portion 32. The left suspension support portion 25 and the right suspension support portion 35 extend rearward and upward so that the rear end portions thereof approach each other in the left-right direction. The rear end portion of the left suspension support portion 25 is connected to the rear end portion of the right suspension support portion 35 in the left-right direction.

The main frame 12 is connected to the right suspension support portion 35 and has a suspension mounting portion 16 projecting rearward at the end portion. The suspension mounting portion 16 supports the front end portion of the rear suspension 9. Specifically, the suspension attachment portion 16 has a pair of cylindrical portions 16a arranged side by side at a predetermined interval in the left-right direction. The pair of cylindrical portions 16a are arranged to extend in the left-right direction in the direction of the cylinder axis. The front end portion of the rear suspension 9 is rotatably coupled to the pair of cylindrical portions 16a.

Furthermore, the rear end of the rear suspension 9 is supported by the rear arm 14. That is, the rear suspension 9 is supported by the suspension mounting portion 16 and the rear arm 14 of the main frame 12. Thereby, when the load in the vertical direction is input to the arm 14 after the support of the rear wheel 4, the load is input to the suspension attachment portion 16 of the main frame 12 via the rear suspension 9.

The main frame 12 also supports the power unit 8 and the rear frame 13. The power unit 8 is mounted on the lower left frame 20 and the lower main frame 30 of the main frame 12. The rear frame 13 is mounted rearward of the left suspension support portion 25 and the right suspension support portion 35 with respect to the left main frame 20 and the right main frame 30 of the main frame 12.

Further, in FIG. 3, the symbols 20a and 30a are mounting portions of the frame 13 provided behind the left main frame 20 and the right main frame 30, respectively. Further, the symbols 20b and 30b are mounting portions of the arms 14 provided on the left main frame 20 and the right main frame 30, respectively. Further, the symbols 20c and 30c are mounting portions of the power unit 8 provided to the left main frame 20 and the right main frame 30, respectively.

As shown in FIGS. 4 and 5, a plate-shaped connecting member 40 that connects the left suspension support portion 25 and the right suspension support portion 35 is attached to the main frame 12. As described above, the left suspension support portion 25 is coupled to the left main frame 20, and the right suspension support portion 35 is coupled to the right main frame 30. Therefore, the connection member 40 connects the left main frame 20 to the right main frame 30. The detailed configuration of the connecting member 40 will be described below.

Although not shown in detail, the seat frame 7 is supported by the rear frame 13. As shown in FIG. 1, the seat portion 7 is provided at a central portion in the front-rear direction of the vehicle 1. Thereby, the rider holds the handle 6 located at the front of the vehicle 1 in a state of sitting on the seat portion 7.

Further, the left main frame 20, the right main frame 30, the rear arm 14, and the rear frame 13 may include a metal material or a material containing a fiber-reinforced resin obtained by reinforcing a resin with a fiber such as carbon fiber. Further, the left main frame 20, the right main frame 30, the rear arm 14, and the rear frame 13 may be any material as long as they function as a body frame of the vehicle 1.

<Connection Member> Next, the configuration of the connection member 40 will be described with reference to FIGS. 4 and 5 . Fig. 4 is a view showing the main frame 12 to which the connecting member 40 is attached as seen from above. Fig. 5 is a view showing the main frame 12 to which the connecting member 40 is attached, as seen from the left.

The connecting member 40 of the present embodiment is a plate-shaped member having a trapezoidal shape in plan view. The connecting member 40 is attached to the main frame 12 such that one of the ones of the trapezoids in the plan view and the long side of the bottom side are located forward. The left end portion of the connecting member 40 is attached to the left suspension support portion 25, and the right end portion is attached to the right suspension support portion 35.

As shown in FIGS. 4 and 5, the connecting member 40 is attached to the left suspension support portion 25 and the right suspension support portion 35 so as to cover one of the left suspension support portion 25 and one of the right suspension support portions 35. The connecting member 40 connects the left suspension support portion 25 and the right suspension support portion 35 in the left-right direction.

The connecting member 40 is attached to the upper portion of the left suspension support portion 25 and the upper portion of the right suspension support portion 35 by bolts 41. That is, the connecting member 40 is detachably attached to the left suspension support portion 25 and the right suspension support portion 35.

Specifically, the left end portion of the connecting member 40 is connected to both ends in the front-rear direction, and is connected to the left suspension support portion 25 by bolts 41. The right end portion of the connecting member 40 is attached to both ends in the front-rear direction, and is connected to the right suspension support portion 35 by bolts 41. In other words, one end portion of the connecting member 40 in the left-right direction is connected to the left suspension support portion 25 by bolts 41 at two locations separated in the front-rear direction. Further, the other end portion of the connecting member 40 in the left-right direction is connected to the right suspension support portion 35 by bolts 41 at two locations separated in the front-rear direction. Thereby, the connecting member 40 is attached to the main frame 12 by the bolts 41 at four positions of the front, rear, left, and right. Thereby, the connecting member 40 is firmly attached to the main frame 12. Further, by attaching the connecting member 40 to the main frame 12 as described above, the rigidity of the main frame 12 in the left-right direction can be improved by the connecting member 40, and the rigidity of the main frame 12 in the torsional direction can be improved.

In the present embodiment, the connecting member 40 is detachably attached to the left suspension support portion 25 and the right suspension support portion 35. However, the connecting member 40 can also be detachably attached to the left main frame 20 and the right main frame 30. Further, the connecting member 40 can also be detachably attached to the left suspension support portion 25 and the right main frame 30. Further, the connecting member 40 can also be detachably attached to the right suspension support portion 35 and the left main frame 20. Further, the connecting member 40 is detachably attached to the left main frame 20, the right main frame 30, and the right suspension supporting portion 35. Further, the connecting member 40 is detachably attached to the right main frame 30, the left main frame 20, and the left suspension supporting portion 25. Further, the connecting member 40 is detachably attached to the left main frame 20 and the left suspension supporting portion 25, and the right main frame 30 and the right suspension supporting portion 35.

That is, as shown in FIG. 5, the connecting member 40 is detachably attached between the front connecting portion 12a of the main frame 12 and the suspension mounting portion 16, or the suspension mounting portion 16 and the rear connecting portion 12b of the main frame 12. Between the installable range.

In the present embodiment, the connecting member 40 is located in the first region of the suspension mounting portion 16 between the front connecting portion 12a and the suspension mounting portion 16 in the front-rear direction.

However, the connecting member 40 may be located in the front-rear direction, and one or more half of the front-rear direction is located in the first region. The connecting member 40 may be located in the front-rear direction, and at least a part of the front-rear direction is located in the first region.

Further, the connecting member 40 may be located in the second region of the suspension mounting portion 16 between the rear portion connecting portion 12b and the suspension mounting portion 16 in the front-rear direction. Further, the connecting member 40 may be located in the front-rear direction, and one or more of the front-rear direction may be located in the second region. The connecting member 40 may be in the front-rear direction, and at least a part of the front-rear direction is located in the second region.

As described above, by arranging the connecting member 40 at a position closer to the suspension mounting portion 16, the suspension supporting rigidity can be further improved by the connecting member 40.

Further, the connecting member 40 may be disposed outside the first region and the second region as long as it is within the above-described attachable range.

The connecting member 40 contains a carbon fiber reinforced resin (for example, an epoxy resin, a vinyl ester, a phenol resin, a polyamide, a polypropylene, a polyphenylene sulfide, or the like), which is obtained by reinforcing a fiber sheet containing carbon fibers. Thereby, the connection member 40 is a fiber-reinforced resin left-right connection plate-shaped member. Further, the fiber sheet is bonded by a resin in a state in which a plurality of sheets are laminated in the thickness direction.

The connecting member 40 is attached to the left suspension support portion 25 and the right suspension support portion 35 such that the fiber direction of the carbon fibers is in the left-right direction. In other words, the connecting member 40 is formed such that the fiber direction of the carbon fibers in the carbon fiber reinforced resin coincides with the direction in which the pair of bottom edges extend in plan view.

Further, the connecting member 40 may be attached to the left suspension support portion 25 and the right suspension support portion 35 without the fiber direction of the carbon fibers being in the left-right direction. That is, the connecting member 40 may be connected to the right suspension support portion 35 and the right suspension support portion 35 in the direction in which the carbon fibers extend. Connecting in the direction in which the carbon fibers extend is meant to connect the connecting member 40 to the left suspension support portion 25 and the right suspension support portion 35 in such a manner that the left main frame 20 and the right main frame 30 are in the vehicle 1 The angle formed by the direction in which the force acting on the connecting member 40 in the left-right direction and the direction in which the fibers in the fiber-reinforced resin contained in the connecting member 40 extend is 45 degrees as viewed from above the vehicle 1.

By forming the connecting member 40 by the carbon fiber reinforced resin obtained by reinforcing the resin with carbon fibers, the weight of the connecting member 40 can be reduced and the rigidity can be improved.

Next, the deformation of the main frame 12 when the rear suspension 9 inputs a force to the suspension mounting portion 16 of the main frame 12 will be described.

As described above, the front end portion of the rear suspension 9 is attached to the suspension mounting portion 16 of the main frame 12. Therefore, when an impact in the vertical direction is input to the rear wheel 4, the load is input to the suspension mounting portion 16 via the support of the rear wheel 4 and the rear arm 14 and the rear suspension 9. In other words, in the suspension attachment portion 16, a force is input from the rear suspension 9 toward the front and upward (see an arrow with a diagonal line in FIG. 4).

The main frame 12 is connected to the left main frame 20 and the right main frame 30 by the front connecting portion 12a and the rear connecting portion 12b, and therefore has a housing space portion 12d at a central portion in the front-rear direction. Therefore, when the rear suspension 9 inputs a force to the suspension mounting portion 16 as described above, as shown by the hollow arrows in FIG. 4, the left main frame 20 and the right main frame 30 are generated in such a manner as to be apart from each other in the left-right direction. Deformation.

In response to this, by connecting the left main frame 20 and the right main frame 30 by the above-described connecting member 40, the deformation of the main frame 12 as described above can be suppressed. Thereby, the rigidity of the main frame 12 can be improved, so that the support rigidity of the suspension 9 after the main frame 12 is utilized can be improved.

Parts such as the oil tank 5 and the air cleaner are disposed in the accommodating space portion 12d of the main frame 12. In the configuration in which the connecting member is fixed to the main frame 12, if each component is to be placed in the accommodating space 12d, the components may interfere with the connecting member. As a result, the arrangement of the components such as the rear suspension 9 and the oil tank 5 may be restricted by the above-described connecting members.

In this case, by attaching and detaching the connecting member 40 to the main frame 12 as described above, the connecting member 40 can be attached to the main frame 12 after the components are placed on the main frame 12. Thereby, it is possible to prevent the arrangement of the respective components from being restricted by the connecting member 40. Further, by forming the connecting member 40 in a plate shape, the connecting member 40 can be arranged compactly. Therefore, the design freedom of the arrangement of each part can be improved.

According to the above, both the support rigidity of the rear suspension 9 and the design freedom of the arrangement of the parts in the vehicle 1 can be improved. In particular, by attaching the detachable connecting member 40 to the main frame 12 as in the present embodiment, it is possible to prevent the arrangement of the rear suspension 9 from being restricted by the cross member as in the prior art. Thereby, both the support rigidity of the rear suspension 9 and the design freedom of the configuration of the rear suspension 9 can be ensured.

(Second Embodiment) Fig. 6 is a plan view showing a state in which the vehicle connecting member 140 of the second embodiment is attached to the main frame 12. Fig. 7 is a left side view showing a state in which the vehicle connecting member 140 of the second embodiment is attached to the main frame 12. In this embodiment, the difference from the configuration of the first embodiment is that the connecting member 140 is the outer casing of the air cleaner case 145 (which forms part of the components of the vehicle). In the following, the same components as those in the first embodiment are denoted by the same reference numerals, and their description will be omitted. Only the differences from the first embodiment will be described.

As shown in FIGS. 6 and 7, the connecting member 140 that connects the left suspension support portion 25 of the main frame 12 and the right suspension support portion 35 is the outer casing of the air cleaner case 145. That is, the connecting member 140 enhances the rigidity of the main frame 12 and also functions as an outer casing of the air cleaner case 145. In this way, the part constituting the part of the vehicle (the outer casing of the air cleaner case 145) also serves as the connecting member 140, whereby the number of parts can be reduced, and the degree of freedom in designing the arrangement of other parts can be improved.

Although not specifically shown, the air cleaner case 145 is in the shape of a box having a space inside, and air flows into the space from the outside of the vehicle. The air cleaner case 145 has an air cleaner case body 145a that opens upward, and a connecting member 140 that covers the opening. An air cleaner (not shown) for cleaning the sucked air is housed in the air cleaner case main body 145a. The connecting member 140 is disposed above the air cleaner case body 145a and covers the opening of the air cleaner case body 145a. That is, the connecting member 140 is constituted by a part of the air cleaner case 145 which is a box-shaped part.

Figure 8 is a cross-sectional view taken along line VIII-VIII of Figure 6. Figure 9 is a cross-sectional view taken along line IX-IX of Figure 6. As shown in FIGS. 6 to 9, the connecting member 140 is a plate-like member that is formed in a trapezoidal shape in plan view and that protrudes upward in the center portion in plan view. That is, the connecting member 140 has a planar upper surface 140a in plan view and four side surfaces 140b connected to each side of the upper surface 140a. Further, the connecting member 140 is a flat plate portion 140c having a flat plate shape at both left and right end portions.

By the configuration of the connecting member 140 as described above, the volume of the space inside the air cleaner case 145 can be increased, and the rigidity of the connecting member 140 can be improved as compared with the case of the flat plate shape. In particular, by making the connecting member 140 have the shape as described above, the tensile strength in the front-rear direction and the left-right direction can be increased in the outer peripheral portion of the connecting member 140, and the twisting direction can be improved by the upper surface 140a and the side surface 140b. strength.

As shown in FIG. 6, the connecting member 140 is attached to the main frame 12 so that the long side of one of the bottom faces of the trapezoid is located forward in plan view. The flat plate portion 140c at the left end portion of the connecting member 140 is connected to the left suspension support portion 25 by bolts 41, and the flat plate portion 140c at the right end portion is connected to the right suspension support portion 35 by bolts 41. Thereby, the connecting member 140 of the present embodiment is also detachably attached to the main frame 12.

In the present embodiment, the connecting member 140 is detachably attached to the left suspension support portion 25 and the right suspension support portion 35. However, the connecting member 140 can also be detachably attached to the left main frame 20 and the right main frame 30. Further, the connecting member 140 may be detachably attached to the left suspension support portion 25 and the right main frame 30. Further, the connecting member 140 can also be detachably attached to the right suspension support portion 35 and the left main frame 20. Further, the connecting member 140 is detachably attached to the left main frame 20, the right main frame 30, and the right suspension supporting portion 35. Further, the connecting member 140 is detachably attached to the right main frame 30, the left main frame 20, and the left suspension supporting portion 25. Further, the connecting member 140 is detachably attached to the left main frame 20 and the left suspension supporting portion 25, and the right main frame 30 and the right suspension supporting portion 35.

In other words, the connecting member 140 is attached between the front connecting portion 12a of the main frame 12 and the suspension mounting portion 16 or the rear connecting portion between the suspension mounting portion 16 and the main frame 12, similarly to the connecting member 40 of the first embodiment. In the installable range between 12b. The attachment position of the connection member 140 is the same as that of the connection member 40 of the first embodiment, and thus detailed description thereof will be omitted.

The connecting member 140 includes a carbon fiber reinforced resin (for example, an epoxy resin, a vinyl ester, a phenol resin, a polyamide, a polypropylene, a polyphenylene sulfide, or the like), which is obtained by reinforcing a fiber sheet containing carbon fibers. Thereby, the connection member 140 is a fiber-reinforced resin left-right connection plate-shaped member. Further, the fiber sheet is bonded by a resin in a state in which a plurality of sheets are laminated in the thickness direction.

Similarly to the connecting member 40 of the first embodiment, the connecting member 140 is attached to the left suspension support portion 25 and the right suspension support portion 35 such that the fiber direction of the carbon fibers is in the left-right direction. In other words, the connecting member 140 is formed such that the fiber direction of the carbon fibers in the carbon fiber reinforced resin coincides with the direction in which the pair of bottom edges extend in plan view.

Further, the connecting member 140 may be attached to the left suspension support portion 25 and the right suspension support portion 35 without the fiber direction of the carbon fibers being the left-right direction. That is, the connecting member 140 may connect the left suspension support portion 25 and the right suspension support portion 35 in the direction in which the carbon fibers extend. Connecting in the direction in which the carbon fibers extend is meant to connect the connecting member 140 to the left suspension support portion 25 and the right suspension support portion 35 in such a manner that the left main frame 20 and the right main frame 30 are in the vehicle 1 The angle formed by the direction of the force acting on the connecting member 140 when moving away from the left-right direction and the direction in which the fibers in the fiber-reinforced resin contained in the connecting member 140 extend is 45 degrees as viewed from above the vehicle 1.

Further, similarly to the connection member 140, the air cleaner case main body 145a may include a carbon fiber reinforced resin obtained by reinforcing a resin with carbon fibers, or may contain other resin or metal material.

According to the above configuration, the rigidity of the main frame 12 can be improved by the connecting member 140. Thereby, the support rigidity of the suspension 9 after the suspension mounting portion 16 of the main frame 12 can be improved.

Further, by providing the connecting member 140 with the upper surface 140a and the four side surfaces 140b as described above, the tensile strength of the main frame 12 in the left-right direction can be improved, and the strength in the torsional direction can be improved.

(Other Embodiments) Although the embodiments of the present invention have been described above, the above embodiments are merely examples for carrying out the invention. Therefore, the above embodiments are not limited to the above-described embodiments, and the above-described embodiments are appropriately changed and implemented without departing from the spirit and scope of the invention.

In each of the above embodiments, the connecting member 40 is a flat member, and the connecting member 140 is an outer casing having an upper surface 140a and four side surfaces 140b. However, the connecting member may be at least one of a left main frame and a left suspension supporting portion as long as the assembly obtained by arranging the frame-shaped, rod-shaped, and rod-shaped members in parallel with each other. The configuration in which at least one of the right main frame and the right suspension support portion is connected may be any configuration.

In each of the above embodiments, the connecting members 40 and 140 are attached to the left suspension support portion 25 and the right suspension support portion 35 by bolts 41. However, the connecting member may be attached to the left suspension support portion and the right suspension support portion by other methods such as fitting, following, and welding, as long as the connecting member is detachably attached to the main frame.

In each of the above embodiments, the left end portions of the connecting members 40 and 140 are connected to the left suspension support portion 25 by bolts 41 at two positions separated in the front-rear direction, and the right end portion is separated at two positions in the front-rear direction. It is connected to the right suspension support portion 35 by bolts 41. However, the connecting member may be connected to the left suspension support portion and the right suspension support portion by bolts at three or more positions separated in the front-rear direction. Further, the connecting member may be connected to the left suspension support portion and the right suspension support portion by bolts in at least two portions separated in the vertical direction.

In the first embodiment, the connecting member 40 is attached to the upper portion of the left suspension support portion 25 and the upper portion of the right suspension support portion 35. However, the connecting member may be attached to a portion other than the upper portion of the left suspension support portion and a portion other than the upper portion of the right suspension support portion. That is, the connecting member can be attached to any of the left suspension support portion and the right suspension support portion. For example, the connecting member may be attached to the lower portion of the left suspension support portion and the lower portion of the right suspension support portion. Further, the connecting member may be attached to a portion that constitutes the accommodating space portion 12d in the left suspension support portion and a portion that constitutes the accommodating space portion 12d in the right suspension support portion.

In each of the above embodiments, the connecting members 40 and 140 are directly connected to the left suspension support portion 25 and the right suspension support portion 35. However, the connecting member may also be indirectly connected to the left suspension support portion and the right suspension support portion via other members.

In each of the above embodiments, the connecting members 40 and 140 connect the left suspension support portion 25 to the right suspension support portion 35. However, the connecting member can also connect the left main frame to the right main frame. The connecting member can also connect the left main frame to the right suspension support. The connecting member can also connect the right main frame to the left suspension support. The connecting member can also connect the left main frame to the right main frame and the right suspension support. The connecting member can also connect the right main frame to the left main frame and the left suspension support. The connecting member may also connect the left main frame and the left suspension support portion to the right main frame and the right suspension support portion.

In each of the above embodiments, the left suspension support portion 25 and the right suspension support portion 35 are connected in the left-right direction. However, the left suspension support portion and the right suspension support portion may also be separated in the left-right direction. For the main frame of such a configuration, the connecting member may be attached so that the left suspension support portion and the right suspension support portion are connected.

For example, as shown in FIG. 10, in the main frame 212 in which the left suspension support portion 225 and the right suspension support portion 235 are separated, a plate-shaped connecting member 240 is attached to the left suspension support portion 225 and the right suspension support portion 235. The main frame 212 has a left suspension mounting portion 216a provided at a front end portion of the left suspension support portion 225, and a right suspension mounting portion 216b provided at a front end portion of the right suspension support portion 235. The connecting member 240 is attached to a lower portion of the left suspension support portion 225 and a lower portion of the right suspension support portion 235. Thereby, the suspension support rigidity of the main frame 212 can be improved.

In each of the above embodiments, the connecting members 40 and 140 include a carbon fiber reinforced resin obtained by reinforcing a resin with carbon fibers. However, the connecting member may contain other materials such as a metal, a resin, and an elastomer as long as it includes a carbon fiber-reinforced resin obtained by reinforcing a resin with carbon fibers.

In each of the above embodiments, the connecting members 40 and 140 include a carbon fiber reinforced resin obtained by reinforcing a resin with carbon fibers. However, the fiber-reinforced resin obtained by reinforcing the resin by fibers other than the carbon fibers (for example, aromatic polyamide fibers, polyethylene fibers, and glass fibers) may constitute the connecting member. Moreover, in each of the above embodiments, an epoxy resin, a vinyl ester, a phenol resin, a polyamide, a polypropylene, a polyphenylene sulfide, or the like can be used as the resin. However, the resin may be other types of resins as long as it is a fiber-reinforced resin.

In each of the above embodiments, the connecting members 40 and 140 include a carbon fiber reinforced resin obtained by reinforcing a resin with a fiber sheet containing carbon fibers. However, the connecting member may also contain a fiber-reinforced resin using a fiber having an unwoven state instead of a fiber sheet containing fibers. Further, the fibers may be fibers having a continuous specific length (for example, 1 mm) or more, or may be discontinuous fibers. Further, in the case where discontinuous fibers are used as the fibers, the connecting member preferably includes fibers extending in a direction at an angle of 45 degrees or less with respect to a direction of a force acting on the connecting member when viewed from above the vehicle 1. Shaped or rod-shaped reinforcement. The reinforcing material may be a member different from the above connecting member. Further, the reinforcing material may be a continuous fiber or a material different from the discontinuous fiber.

In each of the above embodiments, the direction of the carbon fibers contained in the carbon fiber-reinforced resin of the connecting members 40 and 140 is the left-right direction. However, the fiber direction of the connecting member may be a direction other than the left-right direction as long as it is a fiber direction in which the rigidity of the main frame can be increased by the connecting member.

In each of the above embodiments, the connecting members 40 and 140 include a carbon fiber reinforced resin obtained by reinforcing a resin with a fiber sheet containing carbon fibers. The above-mentioned fiber sheet is bonded by a resin in a state in which a plurality of sheets are laminated in the thickness direction. However, the carbon fiber reinforced resin may further comprise a composite material obtained by laminating a carbon fiber reinforced resin layer obtained by carbon fiber reinforced with a foamed resin layer containing a foamed synthetic resin in a thickness direction. The composite material is a material having a pair of the above-described carbon fiber-reinforced resin layers and having the above-mentioned foamed resin layer interposed between the carbon fiber-reinforced resin layers. By using the above composite material, it is possible to reduce the weight of each member including the carbon fiber reinforced resin and to easily change the thickness of each member as compared with the case of using only the carbon fiber reinforced resin layer. Further, a foamed synthetic resin which can absorb vibration as the foamed resin layer may be used.

In each of the above embodiments, the connecting members 40 and 140 are attached to the main frame 12 in the vicinity of the suspension mounting portions 16, 216a, and 216b of the suspension 9 after the rear wheel 4 is elastically supported. However, the connecting member may also be mounted in the body frame in the vicinity of the suspension mounting portion for mounting the suspension before the front wheel is elastically supported.

In the second embodiment described above, the connecting member 140 also serves as the outer casing of the air cleaner case 145. However, the connecting member may also serve as another component of the vehicle as long as it has a configuration that can increase the rigidity of the main frame. That is, the connecting member may also be constituted by at least a part of the components constituting the vehicle.

In the above-described embodiments, the locomotive has been described as an example of the vehicle 1. However, the vehicle is not limited to a two-wheeled vehicle as long as it is a straddle type vehicle having a left and right frame to which the front end portion and the rear end portion are connected. It can also be any vehicle such as a tricycle or a four-wheeled vehicle.

1‧‧‧ Vehicles

2‧‧‧ body

3‧‧‧ Front wheel

4‧‧‧ Rear wheel (wheel)

5‧‧‧ fuel tank

6‧‧‧Hands

6a‧‧‧Steering shaft

7‧‧‧s

8‧‧‧Power unit

9‧‧‧ Rear suspension (suspension)

10‧‧‧ body frame

11‧‧‧ head tube

12‧‧‧Main frame (body frame)

12a‧‧‧Front connection

12b‧‧‧After the connection

12c‧‧‧Intermediate

12d‧‧‧Containing Space Department

13‧‧‧post frame

14‧‧‧ rear arm

16‧‧‧suspension installation

16a‧‧‧Cylinder

17‧‧‧Horizontal components

20‧‧‧Left main frame

20a‧‧‧Installation Department

20b‧‧‧Installation Department

20c‧‧‧Installation Department

21‧‧‧ Left front frame

22‧‧‧The rear of the left main frame

25‧‧‧ Left Suspension Support

30‧‧‧right main frame

30a‧‧‧Installation Department

30b‧‧‧Installation Department

30c‧‧‧Installation Department

31‧‧‧The front of the right main frame

32‧‧‧The rear of the right main frame

35‧‧‧Right Suspension Support

40‧‧‧Connecting members (left and right connecting plate members made of fiber reinforced resin)

41‧‧‧ bolt

140‧‧‧Connecting members (left and right connecting plate members made of fiber reinforced resin)

140a‧‧‧ upper surface

140b‧‧‧ side

140c‧‧‧ flat section

145‧‧‧Air cleaner box

145a‧‧‧Air cleaner box body

212‧‧‧Main frame

216a‧‧‧left suspension installation

216b‧‧‧Right suspension installation

225‧‧‧Left Suspension Support

235‧‧‧Right Suspension Support

240‧‧‧Connecting members (left and right connecting plate members made of fiber reinforced resin)

F‧‧‧ arrow

L‧‧‧ arrow

R‧‧‧ arrow

U‧‧‧ arrow

Fig. 1 is a left side view of the vehicle according to the first embodiment of the present invention. 2 is a left side view showing a schematic configuration of the vehicle, and a plan view showing a state in which the connecting member is attached to the main frame from above. Fig. 3 is a perspective view showing a schematic configuration of a main frame. Fig. 4 is a plan view showing a state in which the main frame is attached with a connecting member as viewed from above. Fig. 5 is a left side view of the state in which the main frame is attached with the connecting member as viewed from the left. Fig. 6 is a view corresponding to Fig. 4 showing a state in which the connecting member for a vehicle of the second embodiment is attached to the main frame. Fig. 7 is a view corresponding to Fig. 5 showing a state in which the connecting member for a vehicle of the second embodiment is attached to the main frame. Figure 8 is a cross-sectional view taken along line VIII-VIII of Figure 6. Figure 9 is a cross-sectional view taken along line IX-IX of Figure 6. Fig. 10 is a view showing a state in which a connecting member is attached to a main frame of a vehicle according to another embodiment from the rear.

Claims (12)

A straddle-type vehicle comprising: a handle; a steering shaft rotatably supporting the handle; a wheel; a suspension that elastically supports the wheel; a left main frame and a right main frame, respectively, before and behind the vehicle Extending upwardly; a front connecting portion supporting the steering shaft, and connecting the front end portion of the left main frame to the front end portion of the right main frame; the rear connecting portion connecting the rear end portion of the left main frame with The rear main frame is connected to the rear end portion; the suspension mounting portion is configured to mount the suspension; the vehicle body frame includes a left suspension support portion connecting the left main frame and the suspension mounting portion, and the right main vehicle a right suspension support portion connected to the suspension attachment portion; and a plate-shaped fiber-reinforced resin left and right connection plate member including a fiber-reinforced resin obtained by fiber reinforcement, and detachably attached to the vehicle body frame And connecting at least one of the left main frame and the left suspension support portion to at least one of the right main frame and the right suspension support portion. The straddle-type vehicle according to claim 1, wherein the left main frame and the right main frame are apart from the front connecting portion and the rear connecting portion, and are not linear when viewed from the front-rear direction Connected in one piece. The straddle-type vehicle according to claim 1 or 2, wherein the fiber-reinforced resin left-right connecting plate-like member is in the front-rear direction, and at least a part is located in the first region or the second region, and the first region is the left main vehicle a region of the shelf, the right main frame, the left suspension support portion, and the right suspension support portion that is closer to the suspension mounting portion than the middle of the front connecting portion and the suspension mounting portion, wherein the second region is the left The main frame, the right main frame, the left suspension support portion, and the right suspension support portion are closer to the suspension mounting portion than the middle of the rear connecting portion and the suspension mounting portion. The straddle-type vehicle according to any one of claims 1 to 3, wherein the fiber-reinforced resin left-right connecting plate-like member is in the front-rear direction, and one or more of the front-rear direction is located in the first region or the second region. The first region is closer to the suspension mounting portion than the middle of the front connecting portion and the suspension mounting portion of the left main frame, the right main frame, the left suspension support portion, and the right suspension support portion. a second region in which the left main frame, the right main frame, the left suspension support portion, and the right suspension support portion are closer to the suspension mounting portion than the middle of the rear connecting portion and the suspension mounting portion The area. The straddle-type vehicle according to any one of claims 1 to 4, wherein the fiber-reinforced resin left-right connecting plate-like member is located in the front-rear direction and is located in the first region or the second region, and the first region is the left a region of the main frame, the right main frame, the left suspension support portion, and the right suspension support portion closer to the suspension mounting portion than the middle of the front connecting portion and the suspension mounting portion, the second region is The left main frame, the right main frame, the left suspension support portion, and the right suspension support portion are closer to the suspension mounting portion than the middle of the rear connecting portion and the suspension mounting portion. The straddle-type vehicle according to any one of claims 1 to 5, wherein the fiber-reinforced resin left and right connection plate-like members connect the left suspension support portion to the right suspension support portion. The straddle-type vehicle according to any one of claims 1 to 6, wherein the fiber-reinforced resin left and right connecting plate-like members comprise at least a part of the components constituting the vehicle. The straddle-type vehicle according to any one of claims 1 to 7, wherein the fiber-reinforced resin left and right connecting plate-like members comprise a part of the box-shaped member. The straddle-type vehicle according to any one of claims 1 to 8, wherein the fiber-reinforced resin left-right connecting plate-like member has a direction of the fiber in a left-right direction of the vehicle. The straddle-type vehicle according to any one of claims 1 to 9, wherein the fiber-reinforced resin left-right connecting plate-like member comprises a plurality of fiber sheets laminated in a thickness direction as the fibers. The straddle-type vehicle according to any one of claims 1 to 10, wherein, in the left-right connecting plate-like member made of the fiber-reinforced resin, one end portion of the vehicle in the left-right direction is in a front-rear direction or an up-and-down direction of the vehicle At least two portions of the separation are connected to at least one of the left main frame and the left suspension support portion, and the other end portion of the vehicle in the left-right direction is separated in a front-rear direction or an up-and-down direction of the vehicle. At least two locations are connected to at least one of the right main frame and the right suspension support. The straddle-type vehicle according to claim 11, wherein the fiber-reinforced resin left and right connection plate-like members are connected to at least one of the left main frame and the left suspension support portion by bolts, and the right main vehicle At least one of the shelf and the right suspension support portion.