CN110843972A

CN110843972A - Straddle type vehicle

Info

Publication number: CN110843972A
Application number: CN201910644215.XA
Authority: CN
Inventors: 鹈川源也; 和田纱失香
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2018-08-21
Filing date: 2019-07-16
Publication date: 2020-02-28
Anticipated expiration: 2039-07-16
Also published as: BR102019013132A2; CN110843972B; JP2020029121A; JP6976913B2

Abstract

The invention provides a straddle-type vehicle, which is provided with a cover component for protecting an interlocking mechanism of a front-back interlocking brake system connected with a brake pedal. The straddle-type vehicle (1) includes: an interlocking mechanism (S) which is connected with a brake pedal (27) for interlocking a front wheel Brake (BF) and a rear wheel Brake (BR); a swing arm (44) which is pivotally supported on the vehicle body frame (7) in a swingable manner and pivotally supports the rear Wheel (WR) in a freely rotatable manner; and a cover member (80) attached to the upper portion of the swing arm (44), wherein the cover member (80) is integrally formed by including a rear fender portion (82) covering the front upper portion of the vehicle body of the rear Wheel (WR) and a protective cover portion (87) covering at least a part of the interlocking mechanism (S) from above and to the side of the vehicle body. A wall member (81) is provided on the rear surface side of the cover member (80) at a position between the protective cover section (87) and the rear fender section (82).

Description

Straddle type vehicle

Technical Field

The present invention relates to a straddle-type vehicle, and more particularly, to a straddle-type vehicle in which a cover member made of a thin plate of synthetic resin or the like is attached to a swing arm that rotatably supports a rear wheel.

Background

In a conventional straddle-type vehicle provided with a swing arm for rotatably supporting a rear wheel, a cover member made of a thin plate of synthetic resin or the like is attached to an upper portion of the swing arm.

Patent document 1 discloses a straddle-type vehicle in which a cover member integrally forming a rear fender covering an upper portion of a rear wheel and a chain cover covering an upper portion of a drive chain is attached to an upper surface of a swing arm.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2003-72623

Disclosure of Invention

Here, in a straddle-type vehicle having a brake pedal for actuating a rear wheel brake, a configuration is known in which an interlock mechanism including a plurality of links is coupled to the brake pedal in order to form a front-rear interlock brake system in which a front wheel brake and a rear wheel brake are simultaneously actuated when the brake pedal is operated. Such an interlocking mechanism has many movable parts and it is desirable to provide a protective cover member that is protected from moisture, dust, and the like, but there is a problem that the remaining space around the interlocking mechanism is small and the number of parts and the number of assembly steps increase if a new cover member is provided. Thus, the inventors of the present invention have studied to protect the interlocking mechanism by using a cover member attached to the swing arm as in patent document 1.

The present invention has been made to solve the above-described conventional technical problems, and an object of the present invention is to provide a straddle-type vehicle having a cover member that protects an interlocking mechanism of a front-rear interlocking brake system connected to a brake pedal.

In order to achieve the object, a 1 st feature of the present invention is a straddle-type vehicle including: an interlocking mechanism which is connected with a brake pedal for interlocking a front wheel brake and a rear wheel brake; a swing arm that is pivotally supported to the vehicle body frame so as to be able to swing, and that pivotally supports the rear wheel so as to be freely rotatable; and a cover member attached to an upper portion of the swing arm, the cover member including a rear fender portion covering a front upper portion of the vehicle body of the rear wheel and a cover portion integrally formed to cover at least a part of the interlocking mechanism from above the vehicle body and a side of the vehicle body.

In addition, according to the second aspect of the present invention, the upper surface of the rear fender portion is inclined so as to rise in position as it goes toward the rear of the vehicle body, the upper surface of the cover portion is inclined so as to rise in position as it goes toward the front of the vehicle body, and the uppermost position of the cover portion is located lower than the uppermost position of the rear fender portion, and the joint portion between the upper surface of the rear fender portion and the upper surface of the cover portion is located lower than the uppermost position of the cover portion, as viewed in a side view of the vehicle body.

In the third aspect, the cover member is disposed on the vehicle body front side of the rear fender portion, and a wall member that is erected toward the vehicle body lower side is provided on the rear side of the cover member at a position between the cover member and the rear fender portion.

In addition, according to the 4 th aspect, the wall member is disposed on the rear surface side of the joint portion.

Further, according to the 5 th aspect, the cover portion is formed in a box shape that is open at least at the front and the bottom of the vehicle body.

In addition, according to the 6 th aspect, a stop lamp switch connected to the brake pedal is disposed on a vehicle body front side of the interlocking mechanism, and a vehicle body front side end portion of the cover portion is located on a vehicle body rear side of the stop lamp switch and on a vehicle width direction inner side.

Further, the vehicle seat control device according to claim 7 is characterized by comprising a pivot frame provided with a swing arm pivot shaft for pivotally supporting the swing arm so as to be swingable, the pivot frame being fixed to a rear end portion of a main frame extending rearward and downward from a head pipe, and the brake pedal and the interlocking mechanism being disposed on a vehicle width direction right side of the pivot frame.

In addition, according to the 8 th aspect of the present invention, a chain cover portion is integrally formed on the cover member on the left side in the vehicle width direction, and covers an upper portion of a drive chain that transmits the rotational power of the power unit to the rear wheel.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the 1 st feature, the straddle-type vehicle includes: an interlocking mechanism which is connected with a brake pedal for interlocking a front wheel brake and a rear wheel brake; a swing arm that is pivotally supported to the vehicle body frame so as to be able to swing, and that pivotally supports the rear wheel so as to be freely rotatable; and a cover member attached to an upper portion of the swing arm, the cover member including a rear fender portion covering a front upper portion of the vehicle body of the rear wheel and a protective cover portion integrally formed to cover at least a part of the interlocking mechanism from above and to a side of the vehicle body, and therefore, the interlocking mechanism can be protected from water, mud, flying stones, and the like by covering the interlocking mechanism with the protective cover portion of the cover member integrally formed with the rear fender portion. Thus, it is not necessary to provide a separate member for protecting the interlocking mechanism, and the number of parts and the number of assembly steps can be prevented from increasing.

According to the second aspect of the invention, since the upper surface of the rear fender portion has a shape inclined so as to rise toward the rear of the vehicle body, the upper surface of the cover portion has a shape inclined so as to rise toward the front of the vehicle body, and the uppermost portion of the cover portion is located at a position lower than the uppermost portion of the rear fender portion and the joint portion between the upper surface of the rear fender portion and the upper surface of the cover portion is located at a lowermost position lower than the uppermost portion of the cover portion in a side view of the vehicle body, moisture, mud, and the like adhering to the upper surfaces of the rear fender portion and the cover portion can be collected at the joint portion along the inclined upper surfaces and discharged to the outside in the vehicle width direction.

According to the third aspect of the invention, since the cover member is disposed on the vehicle body front side of the rear fender portion, and the wall member standing toward the vehicle body lower side is provided on the rear side of the cover member at a position between the cover member and the rear fender portion, mud and the like that is thrown up to the vehicle body front side by the rear wheel can be received by the wall member, whereby the interlocking mechanism can be protected.

According to the 4 th aspect, since the wall member is disposed on the rear side of the joint portion, the length of the wall member extending downward of the vehicle body can be minimized, and the interlocking mechanism can be efficiently protected.

According to the 5 th aspect, since the cover member is formed in a box shape that is open at least in the front and in the bottom of the vehicle body, even if the cover member swings integrally with the swing arm, the movable range of the interlocking mechanism can be secured, interference with the interlocking mechanism can be avoided, and the interlocking mechanism can be protected from mud and the like.

According to the fourth aspect of the invention, since the cover member is integrally swung with the swing arm, the cover member can be prevented from interfering with the stop lamp switch when the cover member is swung together with the swing arm.

According to the 7 th aspect, since the brake pedal and the interlocking mechanism are disposed together on the right side in the vehicle width direction of the pivot frame, the assembly work and maintenance of the brake pedal and the interlocking mechanism can be easily performed.

According to the 8 th aspect, since the chain cover portion that covers the upper side of the drive chain that transmits the rotational power of the power unit to the rear wheel is integrally formed on the left side in the vehicle width direction of the cover member, the number of components and the number of assembly steps can be further reduced by integrally forming the chain cover on the cover member. Further, the cover member can be easily molded and the rigidity of the cover member can be improved by providing the guard cover portion on the right side of the rear fender portion located at the center in the vehicle width direction and providing the chain cover portion on the left side in the vehicle width direction.

Drawings

Fig. 1 is a right side view of a motorcycle according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a partially enlarged left side view of the motorcycle.

Fig. 4 is a partially cut-away right side view of the motorcycle.

Fig. 5 is an enlarged perspective view of the interlocking mechanism.

Fig. 6 is a right side view of the cover member.

Fig. 7 is a perspective view of the cover member as viewed from the front right of the vehicle body.

Fig. 8 is a perspective view of the cover member as viewed from the lower right of the vehicle body.

Fig. 9 is an enlarged perspective view of the wall member of the cover member.

Fig. 10 is a cross-sectional view taken along line X-X of fig. 4.

Description of the reference numerals

A two-wheeled motorcycle (straddle-type vehicle), a 7.. vehicle body frame, 8.. main frame, 25.. swing arm pivot, 27.. brake pedal, 38.. head tube, 42.. pivot frame, 43.. drive chain, 44.. swing arm, 50.. brake light switch, 80.. cover member, 81.. wall member, 82.. rear fender portion, 82.. upper surface of rear fender portion, 83.. chain cover portion, 87.. protective cover portion, 87a.. upper surface of protective cover portion, 87b.. front side end of protective cover portion, 95.. junction portion, uppermost position of a.. protective cover portion, uppermost position of b.. rear fender portion, c.. lowermost position, BF... front wheel brake, BR.. rear wheel brake, s. interlocking unit, p WR.. rear wheel

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Fig. 1 is a right side view of a motorcycle 1 as a straddle-type vehicle according to an embodiment of the present invention. The motorcycle 1 is a straddle-type vehicle that travels by transmitting the rotational power of the power unit P to the rear wheel WR via a drive chain. A head pipe 38 that pivotally supports the steering column 5 so as to be rotatable is fixed to a front end portion of the main frame 8 constituting the vehicle body frame 7. A bottom beam 35 that supports the pair of left and right front forks 33 is fixed to the lower end portion of the steering column 5, and the front wheel WF is pivotally supported at the lower end portion of the front fork 33 so as to be rotatable. A steering handle 4 of the mirror 3 is fixedly attached to an upper end portion of the steering column 5, and a brake lever 2 is disposed on the vehicle width direction right side of the steering handle 4.

A box-shaped pivot frame 42 that supports the swing arm pivot 25 is attached to a lower portion of the rear end of the main frame 8. A pair of left and right upper rear frames 11 and a lower rear frame 12 that supports the upper rear frames 11 from below are fixed to an upper portion of the main frame 8. An air cleaner box 48 is disposed in a space surrounded by the main frame 8, the upper rear frame 11, and the lower rear frame 12. The front end of the swing arm 44 that rotatably supports the rear wheel WR is pivotally supported by the swing arm pivot shaft 25 so as to be swingable. The rear end portion of the swing arm 44 is suspended from the upper rear frame 11 by a pair of right and left rear shock absorbers 17.

A power unit P, which is formed by integrating a single-cylinder 4-stroke engine and a stepped transmission, is suspended below the vehicle body of the main frame 8 and in front of the vehicle body of the pivot frame 42. An intake pipe 9 connected to a throttle body 10 is connected to an upper side of a cylinder head of the engine, and an exhaust pipe 28 connected to a muffler 18 on a rear side of the vehicle body is connected to a lower side of one of the intake pipes. The air cleaner box 48 is connected to the upstream side of the throttle body 10 incorporating the fuel injection device and the throttle valve.

A pedal 24 is attached to the right side surface of the power unit P, and a driver manually operates the power unit P. A pair of left and right footstools 26 fixed to the bottom of the power unit P is disposed in front of the footstools 24, and brake pedals 27 are disposed from the front to the rear of the footstools 26.

The head lamp 37 and the front cowl 6 of the windshield 39 are supported from the front of the head pipe 38 to the side of the main frame 8 and the upper rear frame 11. A pair of right and left front turn lamps 36 are attached to the side surfaces of the front cowl 6, and a front fender 34 covering the upper side of the front wheel WF is attached to the front of the floor 35. A pair of left and right rear covers 14 are disposed at the rear of the front cover 6. The seat 13 extends forward and rearward so as to straddle the front hood 6 and the rear hood 14, and a fuel tank 59 is disposed inside a pair of left and right upper rear frames 11 covered with the rear hood 14.

A tail lamp 15 is disposed at the rear end of the rear cover 14. A fender 58 covering the rear upper portion of the rear wheel WR is disposed at a front lower portion of the tail lamp 15, and a pair of right and left rear turn lamps 16 are mounted on side surfaces of the fender 58.

The front wheel WF is provided with a front wheel brake BF that generates a braking force by a front wheel brake drum 32. The rear wheel WR is provided with a rear wheel brake BR which generates a braking force by the rear wheel brake drum 21. The lower end portion of the rear wheel brake drum 21 is non-rotatably supported by the torque rod 22 connected to the lower portion of the swing arm 44.

The motorcycle 1 of the present embodiment employs a mechanical front-rear interlocking brake system that operates the front wheel brake BF by operation of the brake control lever 2 provided to the steering handle 4, while simultaneously operating not only the rear wheel brake BR but also the front wheel brake BF when the brake pedal 27 is operated.

A brake lever 20 pulled by a brake pedal 27 is connected to a rear wheel brake arm 19 that operates a rear wheel brake drum 21. On the other hand, a 1 st brake cable 30 connected to the brake control lever 2 and a 2 nd brake cable 29 pulled in conjunction with the operation of the brake pedal 27 are connected to a front wheel brake arm 31 that operates a front wheel brake drum 32. An interlocking mechanism (see fig. 4) for transmitting the swing motion of the brake pedal 27 to the 2 nd brake cable 29 is disposed on the vehicle width direction right side surface of the pivot frame 42 that pivotally supports the brake pedal 27.

A cover member 80 (dotted hatching) fixed to the upper part of the swing arm 44 is disposed on the vehicle body front side of the rear wheel WR. The cover member 80, which is formed of a thin plate of synthetic resin or the like, is an integrally formed member, and includes: a chain cover portion covering the upper side of the driving chain on the left side in the vehicle width direction; a rear fender portion covering the front upper portion of the rear wheel WR; and covering the interlocking mechanism for forming the front and rear interlocking brake system. A pair of left and right rear-seat step portions 23 are attached to the upper portion of the swing arm 44.

Fig. 2 is a partially enlarged view of fig. 1. The pivot frame 42 supporting the swing arm pivot 25 is formed in a vertically long box shape, and the upper end portion thereof is coupled to the lower surface of the main frame 8. The front end of the swing arm 44 is engaged with the pivot frame 42 so that the pivot frame 42 is sandwiched from both sides in the vehicle width direction by the distal ends of the two arm members. A muffler cover member 18a is attached to the right side surface of the muffler 18. The muffler 18 is supported by the pivot frame 42 by fastening and fixing a plate-shaped muffler support 18b covering the right side of the swing arm 44 in the vehicle width direction together by the swing arm pivot 25.

A cover portion 87 for covering the rear portion of the interlocking mechanism S is formed at the front portion of the cover member 80 on the right side in the vehicle width direction. The interlocking mechanism S including a plurality of links has a longitudinal shape extending from the swing shaft 27a of the brake pedal 27 to the lower portion of the main frame 8. The interlocking mechanism S is covered on the upper side by the cover portion 87 and on the lower side by the muffler support 18b, and only the front upper end portion of the interlocking mechanism S is exposed to the outside in a vehicle body side view.

When the swing arm 44 swings, the muffler support 18b fixed to the pivot frame 42 side is not affected at all, but since the cover member 80 fixed to the swing arm 44 swings integrally with the swing arm 44, the position of the vehicle body front side end 87b of the cover member 87 changes, and the degree of exposure of the interlocking mechanism S changes. The shape of the cover portion 87 is set to cover the interlocking mechanism S as much as possible within a range that does not interfere with other members and the like even if the swing motion is present. The stop lamp switch 50, which is operated by the swing operation of the brake pedal 27, is fixed to the pivot frame 42 at a position forward of the interlocking mechanism S and the swing arm pivot shaft 25.

Fig. 3 is a partially enlarged left side view of the motorcycle 1. A seesaw type shift pedal 40 for changing the shift position of the transmission is attached to the left side of the power unit P in the vehicle width direction. The side stand 41 is attached to the vicinity of the footrest 26 so as to be swingable. A sprocket cover member 47 covering a drive sprocket (not shown) fixed to the output shaft of the power unit P is attached to the front of the swing arm pivot 25.

The rotational power of the power unit P is transmitted to the driven sprocket 45 that rotates integrally with the rear wheel WR via the drive chain 43. A chain cover portion 83 is formed on the cover member 80 at a position to the left in the vehicle width direction, and the chain cover portion 83 covers the drive chain 43 from above and extends to the rear of the rear wheel axle 46 supported by the support plate 49.

Fig. 4 is a partially cut-away right side view of the motorcycle 1. This figure shows a state in which the swing arm 44 is cut between the right side arm and the rear wheel WR, and is viewed from the right side in the vehicle width direction. The interlocking mechanism S having a plurality of links is fixed to the pivot frame 42 by a stay 51 bent rearward of the vehicle body so as to avoid the swing arm pivot 25. A 2 nd brake cable 29 connected to a front wheel brake arm 31 is connected to an upper portion of the interlocking mechanism S. The brake lever 20 connected to the rear wheel brake arm 19 (see fig. 1) is connected to an operating arm 27b extending rearward and upward from a swing shaft 27a of the brake pedal 27.

The cover portion 87 covering the upper rear portion of the interlocking mechanism S is formed in a box shape open to the front of the vehicle body and to the lower side of the vehicle body, and even if the cover member 80 swings integrally with the swing arm 44, the movable range of the interlocking mechanism S is secured, interference with the interlocking mechanism S is avoided, and the interlocking mechanism S is protected from water, mud, flying stones, and the like. By integrally forming the protective cover portion 87 on the cover member 80 attached to the upper portion of the swing arm 44, it is not necessary to provide a separate member for protecting the interlocking mechanism S, and the number of parts and the number of assembly steps can be prevented from increasing.

Further, a wall member 81 erected toward the vehicle body lower side is provided on the rear surface side of the cover member 80 at a position between the rear fender portion 82 and the protective cover portion 87. This can receive mud and the like that is drawn up to the front side of the vehicle body by the rear wheel WR. The swing arm 44 is configured to connect a pair of left and right arm members made of a circular pipe material to each other by a connecting pipe 53 having an angular cross section directed in the vehicle width direction.

The wall member 81 extends downward to a position where it contacts the upper surface of the connecting pipe 53, and the wall member 81 prevents water, mud, and the like adhering to the rear surface of the rear fender portion 82 from entering the front of the vehicle body. A support stay 52 for supporting the tip end of the torsion bar 22 is provided at the lower portion of the connecting pipe 53.

Fig. 5 is an enlarged perspective view of the interlocking mechanism S. The pivot frame 42 formed by bending a plate-like member into a box shape with the vehicle body front side open is welded to the rear end lower portion of the main frame 8 made of a circular pipe material. A support boss 42a that pivotally supports the swing shaft 27a of the brake pedal 27 is fixed to the rear surface of the pivot frame 42, and a support pipe 42b that supports the swing arm pivot shaft 25 penetrates the pivot frame 42 in the vehicle width direction and is fixed thereto. The support member 51 supporting the interlocking mechanism S is fixed to the right side surface of the pivot frame 42 by a bolt 71 disposed at the upper and lower end portions.

The upper end of the operating arm 27b fixed to the swing shaft 27a of the brake pedal 27 is pivotally supported by the 1 st swing shaft 69 so as to be swingable substantially at the center of the 1 st equalizer 68. The lower end of the 1 st equalizer 68 is coupled to the brake lever 20 via a 2 nd swing shaft 70, and the upper end of the 1 st equalizer 68 is coupled to the lower end of a 2 nd equalizer 63 formed of a pair of left and right plate-like members via a 3 rd swing shaft 67. The center portion of the 2 nd equalizer 63 is pivotally supported by a 4 th swing shaft 65 so as to be swingable, and the 4 th swing shaft 65 is disposed at the rear end portion of the support plate 62 fixed by the upper bolt 71 and the positioning bolt 62 a.

The upper side of the 2 nd equalizer 63 is connected to the wire 29a of the 2 nd brake cable 29 via the 5 th swing shaft 64. The outer cylinder member of the 2 nd brake cable 29 is supported on the bracket 60 fixed with the positioning bolt 62 a. The support 51 is provided with a rotation stopper pin 51b for preventing the rotation of the holder 60, and an engaging hook 60a of a return spring 61 is formed at an upper portion of the holder 60. The other side of the return spring 61 is engaged with a hook pin 63a provided at an upper end of the 2 nd equalizer 63. A stopper 66 for preventing the upper portion of the 1 st equalizer 68 from moving toward the vehicle body rear side is provided at the rear end portion of the stay 51.

According to the interlocking mechanism S, when the brake pedal 27 is stepped on by foot, first, the 1 st equalizer 68 rotates counterclockwise, pulling the brake lever 20. Next, the rear wheel brake BR starts generating a braking force, and when the 1 st equalizer 68 stops rotating and the brake pedal 27 is further depressed, the 1 st equalizer 68 starts rotating clockwise around the 2 nd swing shaft 70. Accordingly, when the 2 nd equalizer 63 rotates counterclockwise, the wire 29a of the 2 nd brake cable 29 is pulled by the 5 th swing shaft 64, and the front wheel brake BF starts to operate. Then, when the brake pedal 27 is released, the 2 nd equalizer 63 returns to the initial position by the elastic force of the return spring 61.

The stop lamp switch 50 is supported by a support member 42c provided on a side surface of the pivot frame 42, and a spring-loaded pulling member 50a is engaged between the protruding/recessed switch operating element 50b and the brake pedal 27. The vehicle body front side end 87b of the cover portion 87 is located on the vehicle body rear side of the stop lamp switch 50 and on the vehicle width direction inner side. Specifically, the stop lamp switch 50 is disposed offset toward the vehicle body front side and the vehicle width direction outer side of the interlocking mechanism S. This prevents the cover member 87 from interfering with the stop lamp switch 50 when the cover member 80 and the swing arm 44 are swung integrally.

Fig. 6 is a right side view of the cover member 80. Fig. 7 is a perspective view of the cover member 80 as viewed from the front right of the vehicle body. As described above, the cover member 80 is configured such that the guard cover portion 87 and the chain cover portion 83 are integrally formed on the right and left sides of the rear fender portion 82. Thus, compared to a configuration in which each cover member portion is formed separately, not only can the number of components and the number of assembly steps be reduced, but also the cover member as an integral member can be easily formed, and the rigidity of the cover member can be improved.

The upper surface 82a of the rear fender portion 82 has a shape that is inclined so as to rise in position as it goes toward the rear of the vehicle body. On the other hand, the upper surface 87a of the cover portion 87 has a shape inclined so as to rise toward the front of the vehicle body, and a joint 95 between the rear fender portion 82 and the cover portion 87 is substantially perpendicular to the vehicle body in a side view.

The uppermost position a of the cover portion 87 is lower than the uppermost position B of the rear fender 82, and the coupling portion 95 at which the upper surface 82a of the rear fender 82 is coupled to the upper surface 87a of the cover portion 87 is located at the lowermost position C lower than the uppermost position a of the cover portion 87. This allows moisture, mud, and the like adhering to the upper surfaces of the rear fender portion 82 and the cover portion 87 to be collected along the inclined upper surfaces at the joint portion 95 and discharged outward in the vehicle width direction.

A wall member 81 for receiving water, mud, and the like, which is wound around the rear wheel WR, is disposed on the rear side of the coupling portion 95. This can suppress the length of the wall member 81 extending downward of the vehicle body to the minimum, and efficiently protect the interlocking mechanism S.

The front end portion of the chain cover portion 83 extends to the front of the vehicle body with respect to the front end portion of the cover portion 87, and a flat surface portion 88 directed substantially horizontally is formed between the chain cover portion 83 and the cover portion 87. A support hole 89 for fixing the cover member 80 to the upper surface of the connecting pipe 53 is provided between the flat surface portion 88 and the rear fender portion 82. A support hole 85 is formed in a lower end portion of the rear fender portion 82 in the rear direction for fixing the cover member 80 to the rear seat step portion 23 on the right side in the vehicle width direction, and a support hole 84 is formed in a position of the chain cover portion 83 in the rear direction of the vehicle body for fixing the cover member 80 to the support plate 49 of the rear wheel axle 46.

Fig. 8 is a perspective view of the cover member 80 as viewed from the lower right of the vehicle body. Fig. 9 is an enlarged perspective view of the wall member 81 of the cover member 80, and fig. 10 is a cross-sectional view taken along line X-X of fig. 4. The support hole 89 at the center in the vehicle width direction is formed in the bottom surface of a cylindrical recess 89a protruding downward of the vehicle body. A support hole 90 for fixing the cover member 80 to a support provided on the left arm member of the swing arm 44 is formed in the chain cover portion 83 at a position in front of the vehicle body. Thus, the cover member 80 is stably fixed to the upper portion of the swing arm 44 at four locations in total, which are composed of one location on the right side in the vehicle width direction, one location at the center in the vehicle width direction, and two locations on the left side in the vehicle width direction.

Two longitudinal ribs 91 directed in the vehicle body longitudinal direction and one lateral rib 92 directed in the vehicle width direction are formed on the rear side of the rear fender portion 82, and the strength against deformation is improved. The wall member 81 formed between the rear fender portion 82 and the protective cover portion 87 is shaped so as to surround the interlocking mechanism S from behind by connecting the right wall 81b and the left wall 81c to both ends of the rear wall 81a on the vehicle body rear side. The left wall 81c is connected to a center wall 86 that is directed in the vehicle width direction and extends to the chain cover portion 83. The center wall 86 is disposed in contact with the front surface of the connecting pipe 53 of the swing arm 44, and not only on the right side in the vehicle width direction where the interlocking mechanism S is located but also in the center in the vehicle width direction, the effect of preventing water, mud, and the like that are windingly entrained in the rear wheel WR from entering the front side of the vehicle body can be exerted.

The mode of the motorcycle, the structure of the front and rear brakes, the shape and structure of the main frame or the pivot frame, the shape and structure of the interlocking mechanism, the material and shape of the cover member, the wall member, and the like are not limited to the above-described embodiments, and various modifications can be made. For example, a hydraulic disc type brake may be used by replacing one or both of the front and rear brakes with a drum type brake. The cover member of the present invention is not limited to a two-wheeled motorcycle, and can be applied to a straddle type tricycle having a swing arm and a front-rear interlocking brake system.

Claims

1. A straddle-type vehicle, comprising: an interlocking mechanism (S) which is connected with a brake pedal (27) for interlocking a front wheel Brake (BF) and a rear wheel Brake (BR); a swing arm (44) which is pivotally supported on the vehicle body frame (7) in a swingable manner and pivotally supports the rear Wheel (WR) in a freely rotatable manner; and a cover member (80) mounted on an upper portion of the swing arm (44), the straddle-type vehicle (1) being characterized in that,

the cover member (80) is integrally formed by including a rear fender portion (82) that covers the front upper portion of the vehicle body of the rear Wheel (WR), and a protective cover portion (87) that covers at least a part of the interlocking mechanism (S) from above the vehicle body and from the side of the vehicle body.

2. The straddle-ride type vehicle according to claim 1,

the upper surface (82a) of the rear fender portion (82) has a shape that is inclined so as to rise in position as it goes toward the rear of the vehicle body,

the upper surface (87a) of the cover section (87) has a shape that is inclined so as to rise in position as it goes toward the front of the vehicle body,

the uppermost position (A) of the cover section (87) is located at a position lower than the uppermost position (B) of the rear fender section (82) in a side view of the vehicle body,

a joint (95) between the upper surface (82a) of the rear fender (82) and the upper surface (87a) of the protective cover section (87) is located at a lowermost position (C) that is lower than an uppermost position (A) of the protective cover section (87).

3. The straddle-ride type vehicle according to claim 1 or 2,

the cover portion (87) is disposed on the vehicle body front side of the rear fender portion (82),

a wall member (81) is provided on the rear surface side of the cover member (80) and is erected toward the lower side of the vehicle body at a position between the protective cover portion (87) and the rear fender portion (82).

4. The straddle-ride type vehicle according to claim 3,

the wall member (81) is disposed on the rear side of the joint (95).

5. The straddle-ride type vehicle according to any one of claims 1 to 4,

the cover portion (87) is formed in a box shape that is open at least at the front and the bottom of the vehicle body.

6. The straddle-ride type vehicle according to any one of claims 1 to 5,

a stop lamp switch (50) connected with the brake pedal (27) is arranged at the front side of the vehicle body of the linkage mechanism (S),

the front end (87b) of the cover (87) is located on the rear side of the stop lamp switch (50) and on the inner side in the vehicle width direction.

7. The straddle-ride type vehicle according to claim 6,

has a pivot frame (42) provided with a swing arm pivot (25) for pivotally supporting the swing arm (44) in a freely swinging manner,

the pivot frame (42) is fixed to the rear end of the main frame (8) extending downward from the head pipe (38) toward the rear of the vehicle body,

the brake pedal (27) and the interlock mechanism (S) are disposed together on the right side of the pivot frame (42) in the vehicle width direction.

8. The straddle-ride type vehicle according to claim 7,

a chain cover part (83) is integrally formed on the left side of the cover part (80) in the vehicle width direction, and the chain cover part (83) covers the upper part of a driving chain (43) for transmitting the rotating power of a power unit (P) to the rear Wheel (WR).