JP2020029121A - Saddle-riding type vehicle - Google Patents

Abstract

To provide a saddle-riding type vehicle with a cover member protecting an interlocking mechanism of an interlocking front/rear brake system connected with a brake pedal.SOLUTION: A saddle-type vehicle (1) includes: an interlocking mechanism (S) connected with a brake pedal (27) to interlock a front wheel brake (BF) with a rear wheel brake (BR); a swing arm (44) rotatably journaling a rear wheel (WR) and oscillatably journaled to a vehicle body frame (7); and a cover member (80) mounted on the top of the swing arm (44). The cover member (80) is formed to integrate, including a rear fender part (82) covering vehicle body front and top sides of a rear wheel (WR) and a protective cover part (87) covering at least a part of the interlocking mechanism (S) from the vehicle body top and lateral sides. On the rear face side of the cover member (80) and between the protective cover part (87) and the rear fender part (82), a wall member (81) is provided.SELECTED DRAWING: Figure 4

Description

  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 synthetic resin thin plate or the like is attached to a swing arm that rotatably supports a rear wheel.

  2. Description of the Related Art Conventionally, in a straddle-type vehicle provided with a swing arm that rotatably supports a rear wheel, a configuration in which a cover member made of a synthetic resin thin plate or the like is attached to an upper portion of the swing arm is known.

  Patent Literature 1 discloses a straddle-type vehicle in which a cover member integrally formed with a rear fender that covers above a rear wheel and a chain cover that covers above a drive chain is attached to an upper surface of a swing arm.

JP-A-2003-72623

  Here, in a saddle-ride type vehicle having a brake pedal for operating a rear wheel brake, an interlocking mechanism including a plurality of links in order to provide a front and rear interlocking brake system in which the front wheel brake operates simultaneously with the rear wheel brake when the brake pedal is operated. Is connected to a brake pedal. Such an interlocking mechanism has many movable parts, and it is preferable to provide a cover for protection from moisture, dust, etc., but there is little extra space around the interlocking mechanism. There was a problem that man-hours increased. Therefore, the inventor of the present invention has studied protection of the interlocking mechanism using a cover member attached to the swing arm as disclosed in Patent Document 1.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a straddle-type vehicle provided with a cover member for protecting an interlocking mechanism of a front-rear interlocking brake system connected to a brake pedal.

  To achieve the above object, the present invention provides an interlocking mechanism (S) connected to a brake pedal (27) for interlocking a front wheel brake (BF) and a rear wheel brake (BR), and a rear wheel (WR). ) Having a swing arm (44) rotatably supported by a body frame (7) and swingably supported by a body frame (7), and a cover member (80) attached to an upper portion of the swing arm (44). In the riding type vehicle (1), the cover member (80) covers at least a part of the interlocking mechanism (S) with a rear fender portion (82) that covers an upper front part of the rear wheel (WR) with respect to the vehicle body. The first characteristic lies in that the protective cover (87) covering from the side is formed integrally with the protective cover (87).

  The upper surface (82a) of the rear fender portion (82) has a shape that is inclined so that the position becomes higher toward the rear of the vehicle body, and the upper surface (87a) of the protective cover portion (87) extends forward of the vehicle body. It has a shape that is inclined so that the position becomes higher as it goes, and the uppermost position (A) of the protective cover portion (87) is lower than the uppermost position (B) of the rear fender portion (82) when viewed from the side of the vehicle body. And a connecting portion (95) between the upper surface (82a) of the rear fender portion (82) and the upper surface (87a) of the protective cover portion (87) is located at a position higher than the uppermost position (A) of the protective cover portion (87). The second feature lies in the point at the lower lowest position (C).

  The protective cover (87) is disposed on the front side of the rear fender (82) in the vehicle body, and is provided on the rear side of the cover member (80), and the protective cover (87) and the rear fender. A third feature is that a wall member (81) that stands upright toward the vehicle body is provided at a position between the wall member (82).

  A fourth feature is that the wall member (81) is disposed on the back surface side of the connecting portion (95).

  A fifth feature is that the protective cover portion (87) has a box shape with at least the front and lower sides of the vehicle body open.

  A brake lamp switch (50) connected to the brake pedal (27) is provided on the vehicle body front side of the interlocking mechanism (S), and a vehicle body front side end of the protection cover (87) is provided. The sixth feature is that (87b) is located on the vehicle body rear side and in the vehicle width direction inside of the brake lamp switch (50).

  A pivot frame (42) provided with a swing arm pivot (25) for pivotally supporting the swing arm (44); and the pivot frame (42) is moved downward from the head pipe (38) toward the rear of the vehicle body. And the brake pedal (27) and the interlocking mechanism (S) are centrally arranged on the right side of the pivot frame (42) in the vehicle width direction. Has a seventh feature.

  Further, on the left side of the cover member (80) in the vehicle width direction, a chain cover part (83) that covers an upper part of the drive chain (43) that transmits the rotational power of the power unit (P) to the rear wheel (WR) is integrally formed. There is an eighth feature in that it is formed.

  According to the first feature, an interlocking mechanism (S) connected to a brake pedal (27) for interlocking a front wheel brake (BF) and a rear wheel brake (BR), and a rear wheel (WR) are rotatable. A straddle-type vehicle having a swing arm (44) that is pivotally supported by the body frame (7) and that is swingably supported by a body frame (7), and a cover member (80) that is attached to an upper portion of the swing arm (44). In 1), the cover member (80) covers at least a part of the interlocking mechanism (S) from above the vehicle body and from the side of the vehicle body, and a rear fender portion (82) that covers an upper front part of the rear wheel (WR). Since the interlocking mechanism is integrally formed including the protection cover part (87), the interlocking mechanism is covered by the protection cover part of the cover member formed integrally with the rear fender part, so that the interlocking mechanism is protected from water, mud, stepping stones and the like. Security It is possible to become. As a result, it is possible to prevent an increase in the number of components and the number of assembly steps without providing another component for protecting the interlocking mechanism.

  According to the second feature, the upper surface (82a) of the rear fender portion (82) has a shape that is inclined so that the position becomes higher toward the rear of the vehicle body, and the upper surface (87a) of the protective cover portion (87). ) Has a shape that is inclined so that the position becomes higher toward the front of the vehicle body, and when viewed from the side of the vehicle body, the uppermost position (A) of the protective cover portion (87) is the uppermost position of the rear fender portion (82). (B), and a connecting portion (95) of the upper surface (82a) of the rear fender portion (82) and the upper surface (87a) of the protective cover portion (87) is formed at a position lower than that of the protective cover portion (87). Since it is located at the lowermost position (C) lower than the uppermost position (A), moisture, mud, etc. attached to the upper surfaces of the rear fender portion and the protective cover portion are gathered at the connecting portion along the inclined upper surface, so that the outer side in the vehicle width direction. Can be discharged to The ability.

  According to the third feature, the protection cover portion (87) is disposed on the front side of the rear fender portion (82) in the vehicle body, and is provided on the back surface side of the cover member (80) and the protection cover portion. Since the wall member (81) is provided between the (87) and the rear fender portion (82), the wall member (81) is provided to stand downward from the vehicle body. By receiving with a member, it becomes possible to protect the interlocking mechanism.

  According to the fourth feature, since the wall member (81) is provided on the back surface side of the coupling portion (95), the length of the wall member extending below the vehicle body can be minimized. Thus, the interlocking mechanism can be efficiently protected.

  According to the fifth feature, since the protective cover portion (87) has a box shape with at least the front and lower sides of the vehicle body opened, even if the cover member swings integrally with the swing arm, the interlocking mechanism can be used. It is possible to protect the interlocking mechanism from mud and the like while securing a movable range and avoiding interference with the interlocking mechanism.

  According to a sixth feature, a brake lamp switch (50) connected to the brake pedal (27) is provided on the vehicle body front side of the interlocking mechanism (S), and the protection cover portion (87) is provided. The front end portion (87b) of the vehicle body is located on the rear side of the brake lamp switch (50) on the vehicle body side and inside the vehicle width direction, so that when the cover member swings integrally with the swing arm, the protection cover portion Interference with the brake lamp switch can be prevented.

  According to the seventh feature, a pivot frame (42) provided with a swing arm pivot (25) for swingably supporting the swing arm (44) is provided, and the pivot frame (42) is provided with a head pipe (42). 38) is fixed to the rear end of the main frame (8) extending rearward and downward from the vehicle body, and the brake pedal (27) and the interlocking mechanism (S) are located on the right side of the pivot frame (42) in the vehicle width direction. The centralized arrangement facilitates assembly work and maintenance of the brake pedal and the interlocking mechanism.

  According to the eighth feature, a chain cover portion that covers the upper side of the drive chain (43) that transmits the rotational power of the power unit (P) to the rear wheel (WR), on the left side in the vehicle width direction of the cover member (80). Since (83) is integrally formed, the number of parts and the number of assembly steps can be further reduced by integrally forming the chain cover with the cover member. In addition, by providing a protective cover portion on the right side of the rear fender portion located at the center in the vehicle width direction and providing a chain cover portion on the left side in the vehicle width direction, molding of the cover member is facilitated and rigidity of the cover member is increased. Becomes possible.

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. 2 is a partially enlarged left side view of the motorcycle. FIG. 2 is a right side view, partly in section, of the motorcycle. It is an expansion perspective view of an interlocking mechanism. It is a right view of a cover member. It is the perspective view which looked at the cover member from the vehicle body right front. It is the perspective view which looked at the cover member from the vehicle body lower right. It is an expansion perspective view of the wall member of a cover member. FIG. 5 is a sectional view taken along line XX of FIG. 4.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the 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 a power unit P to a rear wheel WR via a drive chain. A head pipe 38 that rotatably supports the steering stem 5 is fixed to a front end of the main frame 8 that forms the body frame 7. A bottom bridge 35 supporting a pair of left and right front forks 33 is fixed to a lower end of the steering stem 5, and a front wheel WF is rotatably supported at the lower end of the front fork 33. A steering handle 4 to which the rearview mirror 3 is attached is fixed to the upper end of the steering stem 5, and the brake lever 2 is disposed on the right side of the steering handle 4 in the vehicle width direction.

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

  A power unit P, in which a single-cylinder 4-cycle engine and a step-variable transmission are integrally formed, is suspended below the main frame 8 and below the pivot frame 42 in front of the vehicle body. An intake pipe 9 connected to the throttle body 10 is connected to the upper side of the cylinder head of the engine, and an exhaust pipe 28 connected to the muffler 18 at the rear of the vehicle body is connected to one lower side. An air cleaner box 48 is connected to an upstream side of the throttle body 10 containing the fuel injection device and the throttle valve.

  On the right side of the power unit P, a kick pedal 24 for a driver to start the power unit P manually is attached. A pair of left and right footrests 26 fixed to the bottom of the power unit P is disposed in front of the kick pedal 24, and a brake pedal 27 is disposed from the front to the rear of the footrest 26.

  The front cowl 6 supporting the headlights 37 and the windproof screen 39 covers the front of the head pipe 38 and the sides of the main frame 8 and the upper rear frame 11. A pair of left and right front blinkers 36 is attached to the side surface of the front cowl 6, and a front fender 34 that covers above the front wheel WF is attached in front of the bottom bridge 35. At the rear of the front cowl 6, a pair of left and right rear cowls 14 are provided. The seat 13 extends back and forth so as to straddle the front cowl 13 and the rear cowl 14, and a fuel tank 59 is disposed inside a pair of left and right upper rear frames 11 covered by the rear cowl 14.

  A tail light 15 is provided at a rear end of the rear cowl 14. A mudguard device 58 that covers the rear upper portion of the rear wheel WR is provided at a lower front portion of the tail light 15, and a pair of right and left rear turn signals 16 is attached to a side surface of the mudguard device 58.

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

  In the motorcycle 1 according to the present embodiment, while the front wheel brake BF is operated by operating the brake lever 2 provided on the steering handle 4, when the brake pedal 27 is operated, not only the rear wheel brake BR but also the rear wheel brake BR is operated. A mechanical back-and-forth interlocking brake system in which the front wheel brake BF also operates simultaneously is applied.

  A brake rod 20 pulled by a brake pedal 27 is connected to the rear wheel brake arm 19 that operates the rear wheel brake drum 21. On the other hand, a first brake cable 30 connected to the brake lever 2 and a second brake cable 29 towed in conjunction with the operation of the brake pedal 27 are connected to the front wheel brake arm 31 for operating the front wheel brake drum 32. Have been. An interlocking mechanism (see FIG. 4) for transmitting the swinging operation of the brake pedal 27 to the second brake cable 29 is provided on the right side surface in the vehicle width direction of the pivot frame 42 that supports the brake pedal 27. .

  A cover member 80 (a stippled hatching portion) fixed to an upper portion of the swing arm 44 is provided on the front side of the rear wheel WR in the vehicle body. A cover member 80 made of a synthetic resin thin plate or the like includes a chain cover portion that covers the upper side of the drive chain on the left side in the vehicle width direction, a rear fender portion that covers the front upper portion of the rear wheel WR, and an interlocking mechanism for forming a front-rear interlocking brake system. It is an integrally formed part that includes a protective cover that covers the mechanism. The pair of left and right pillion steps 23 is attached to the upper part of the swing arm 44.

  FIG. 2 is a partially enlarged view of FIG. The pivot frame 42 supporting the swing arm pivot 25 has a vertically long box shape, and the upper end thereof is connected to the lower surface of the main frame 8. The front end of the swing arm 44 is engaged with the pivot frame 42 such that the distal ends of the two arm members sandwich the pivot frame 42 from both sides in the vehicle width direction. A muffler cover 18a is attached to a right side surface of the muffler 18. The muffler 18 is supported by the pivot frame 42 by fixing together a plate-shaped muffler stay 18b covering the right side in the vehicle width direction of the swing arm 44 with the swing arm pivot 25.

  A protection cover portion 87 that covers the rear portion of the interlocking mechanism S is formed at a 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 vertically long shape extending from the swing shaft 27a of the brake pedal 27 to a lower portion of the main frame 8. The upper side of the interlocking mechanism S is covered with the protective cover portion 87 and the lower side is covered with the muffler stay 18b, and only the front upper end of the interlocking mechanism S is exposed outward when viewed from the side of the vehicle body.

  When the swing arm 44 swings, the muffler stay 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 front end 87b of the protective cover 87 on the vehicle body changes, and the degree of exposure of the interlocking mechanism S slightly changes. The protective cover portion 87 has a shape that covers the interlocking mechanism S as much as possible within a range that does not interfere with other components or the like even when the swinging operation is performed. The brake lamp switch 50 that is activated by the swing operation of the brake pedal 27 is fixed to the pivot frame 42 at a position in front of the interlocking mechanism S and the swing arm pivot 25.

  FIG. 3 is a partially enlarged left side view of the motorcycle 1. On the left side of the power unit P in the vehicle width direction, a seesaw type shift pedal 40 for changing the gear position of the transmission is mounted. In the vicinity of the footrest step 26, a side stand 41 is swingably attached. A sprocket cover 47 that covers 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 in the vehicle body.

  The rotational power of the power unit P is transmitted via a drive chain 43 to a driven sprocket 45 that rotates integrally with the rear wheel WR. At a position on the left side of the cover member 80 in the vehicle width direction, a chain cover portion 83 that covers the drive chain 43 from above and extends to the rear of the rear wheel axle 46 supported by the support plate 86 is formed.

  FIG. 4 is a partial cross-sectional right side view of the motorcycle 1. This figure shows a state where the right arm of the swing arm 44 and the rear wheel WR are cut off and 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 that curves to the rear of the vehicle body so as to avoid the swing arm pivot 25. A second brake cable 29 connected to the front wheel brake arm 31 is connected to an upper part of the interlocking mechanism S. The brake rod 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 a brake pedal 27.

  The protective cover 87 covering the upper and rear portions of the interlocking mechanism S has a box shape with the front and lower sides of the vehicle body opened, and even if the cover member 80 swings integrally with the swing arm 44, It is possible to protect the interlocking mechanism S from water, mud, stepping stones, etc. while securing a movable range and avoiding interference with the interlocking mechanism S. By forming this protective cover 87 integrally with the cover member 80 attached to the upper part of the swing arm 44, it is not necessary to provide a separate part for protecting the interlocking mechanism S, and the number of parts and the number of assembly steps can be increased. Can be prevented.

  At a position between the rear fender portion 82 and the protective cover portion 87 on the back surface side of the cover member 80, a wall member 81 that stands upright below the vehicle body is provided. Thus, it becomes possible to receive mud and the like which are wound up toward the front side of the vehicle body by the rear wheel WR. The swing arm 44 has a configuration in which a pair of left and right arm members made of a round pipe material are connected to each other by a connection pipe 53 having a square cross section directed in the vehicle width direction.

  The wall member 81 extends downward to a position in contact with the upper surface of the connection pipe 53, and prevents water, mud, and the like adhering to the rear surface of the rear fender 82 from entering the vehicle body forward from the wall member 81. A support stay 52 that supports the front end of the torque rod 22 is provided below the connecting pipe 53.

  FIG. 5 is an enlarged perspective view of the interlocking mechanism S. A pivot frame 42 formed in a box shape with the front side of the vehicle body opened by bending a plate-like member is welded to the lower rear end of the main frame 8 made of a round pipe material. A support boss 42a that 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 25 passes through the pivot frame 42 in the vehicle width direction. It is fixed. The stay 51 supporting the interlocking mechanism S is fixed to the right side surface of the pivot frame 42 by bolts 71 provided at the upper and lower ends.

  An upper end of an operation arm 27 b fixed to a swing shaft 27 a of the brake pedal 27 is swingably supported at a substantially center of a first equalizer 68 by a first swing shaft 69. The lower end of the first equalizer 68 is connected to the brake rod 20 by a second swing shaft 70, and the upper end of the first equalizer 68 is a third swing shaft 67 formed of a pair of left and right plate-like members. 2 is connected to the lower end of the equalizer 63. The central portion of the second equalizer 63 is pivotally supported by a fourth pivot shaft 65 disposed at the rear end of the support plate 62 fixed by the upper bolt 71 and the positioning bolt 62a.

  The upper side of the second equalizer 63 is connected to the wire 29 a of the second brake cable 29 by a fifth swing shaft 64. The outer cylinder member of the second brake cable 29 is supported by a holder 60 fixed by positioning bolts 62a. The stay 51 is provided with a detent pin 51b for preventing rotation of the holder 60, and an engagement hook 60a of the return spring 61 is formed on the upper portion of the holder 60. The other side of the return spring 61 is engaged with a hook pin 63 a provided at the upper end of the second equalizer 63. A stopper 66 is provided at the rear end of the stay 51 to prevent the upper portion of the first equalizer 68 from moving rearward of the vehicle body.

  According to the above-described interlocking mechanism S, when the brake pedal 27 is depressed with a foot, first, the first equalizer 68 rotates counterclockwise to pull the brake rod 20. Next, when the rear wheel brake BR starts exerting the braking force and the first equalizer 68 stops rotating, and then the brake pedal 27 is further depressed, the first equalizer 68 rotates around the second swinging shaft 70 in a clockwise manner. Start rotating in the direction. Accordingly, when the second equalizer 63 rotates counterclockwise, the wire 29a of the second brake cable 29 is pulled by the fifth swing shaft 64, and the front wheel brake BF operates. Then, when the brake pedal 27 is released, the second equalizer 63 returns to the initial position by the elastic force of the return spring 61.

  The brake lamp switch 50 is supported by a stay 42c provided on a side surface of the pivot frame 42. A traction member 50a with a spring is engaged between the switch operator 50b of a retractable type and the brake pedal 27. Have been. The front end portion 87b of the protection cover portion 87 is located on the rear side of the brake lamp switch 50 and on the inside in the vehicle width direction. Specifically, the brake lamp switch 50 is disposed on the vehicle body front side of the interlocking mechanism S and offset to the outside in the vehicle width direction. Accordingly, when the cover member 80 swings integrally with the swing arm 44, it is possible to prevent the protective cover portion 87 from interfering with the brake lamp switch 50.

  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 right front of the vehicle body. As described above, the cover member 80 is formed by integrally forming the protective cover 87 and the chain cover 83 on the left and right sides of the rear fender 82. As a result, the number of parts and the number of assembling steps are reduced as compared with a configuration in which each cover portion is formed separately, the molding of the cover member as an integral part is facilitated, and the rigidity of the cover member is increased. I have.

  The upper surface 82a of the rear fender portion 82 has a shape that is inclined so that the position becomes higher toward the rear of the vehicle body. On the other hand, the upper surface 87a of the protective cover 87 has a shape that is inclined so that the position becomes higher toward the front of the vehicle body, and the coupling portion 95 between the rear fender 82 and the protective cover 87 is It forms a substantially right angle when viewed from the side of the vehicle.

  The uppermost position A of the protective cover portion 87 is lower than the uppermost position B of the rear fender portion 82, and the connecting portion 95 between the upper surface 82 a of the rear fender portion 82 and the upper surface 87 a of the protective cover portion 87 is The lowermost position C is lower than the position A. Thus, moisture, mud, and the like adhering to the upper surfaces of the rear fender portion 82 and the protective cover portion 87 can be collected at the coupling portion 95 along the inclined upper surface and discharged to the outside in the vehicle width direction.

  The wall member 81 that receives water, mud, and the like that is rolled up by the rear wheel WR is disposed on the back surface side of the connecting portion 95. Thereby, it is possible to efficiently protect the interlocking mechanism S while minimizing the length of the wall member 81 extending below the vehicle body.

  The front end of the chain cover 83 extends from the front end of the protective cover 87 to the front of the vehicle body, and a substantially horizontal plane portion 88 is formed between the chain cover 83 and the protective cover 87. ing. A support hole 89 for fixing the cover member 80 is provided on the upper surface of the connection pipe 53 between the flat portion 88 and the rear fender portion 82. A support hole 85 for fixing the cover member 80 to the pillion step 23 on the right side in the vehicle width direction is formed at a lower end portion on the rear side of the rear fender portion 82. A support hole 84 for fixing the cover member 80 to the support plate 49 of the rear wheel axle 46 is formed.

  FIG. 8 is a perspective view of the cover member 80 as viewed from the lower right side of the vehicle body. 9 is an enlarged perspective view of a wall member 81 of the cover member 80, and FIG. 10 is a cross-sectional view taken along line XX of FIG. The support hole 89 at the center in the vehicle width direction is formed on the bottom surface of the cylindrical recess 89a protruding below the vehicle body. A support hole 90 for fixing the cover member 80 to a stay provided on the arm member on the left side of the swing arm 44 is formed at a position near the front of the vehicle body of the chain cover portion 83. As a result, the cover member 80 is stably fixed to the upper part of the swing arm 44 at a total of four locations, one at the right side in the vehicle width direction, one at the center in the vehicle width direction, and two at the left side in the vehicle width direction. It will be.

  On the rear surface side of the rear fender portion 82, two vertical ribs 91 pointing in the vehicle front-rear direction and one horizontal rib 92 pointing in the vehicle width direction are formed to increase the strength against deformation. Further, a wall member 81 formed between the rear fender portion 82 and the protective cover portion 87 connects the right wall 81b and the left wall 81c to both ends of the rear wall 81a on the rear side of the vehicle body, and moves the interlocking mechanism S from the rear. It is shaped to surround it. A central wall 86 extending to the chain cover 83 in the vehicle width direction is continuous with the left wall 81c. The center wall 86 is disposed so as to be in contact with the front surface of the connecting pipe 53 of the swing arm 44, and has an effect of preventing water, mud, etc., which is wound by the rear wheel WR from entering the front side of the vehicle body, in the vehicle width direction where the interlocking mechanism S is located. It can be used not only on the right side but also in the center in the vehicle width direction.

  The form of the motorcycle, the structure of the front and rear brakes, the shape and structure of the main frame and the pivot frame, the shape and structure of the interlocking mechanism, the material and shape of the cover member, and the shapes of the protective cover and the wall member are the same as those in the above embodiment. However, various changes are possible. For example, one or both of the front and rear brakes may be replaced with a drum type and a hydraulic disc type. The cover member according to the present invention is not limited to a motorcycle, but can be applied to a straddle-type tricycle having a swing arm and a front-rear interlocking brake system.

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle (saddle riding type vehicle), 7 ... Body frame, 8 ... Main frame, 25 ... Swing arm pivot, 27 ... Brake pedal, 38 ... Head pipe, 42 ... Pivot frame, 43 ... Drive chain, 44 ... Swing Arm, 50: brake lamp switch, 80: cover member, 81: wall member, 82: rear fender, 82a: upper surface of rear fender, 83: chain cover, 87: protective cover, 87a: upper surface of protective cover, 87b: front end of the protective cover on the vehicle body, 95: connecting portion, A: uppermost position of the protective cover, B: uppermost position of the rear fender, C: lowermost position, BF: front wheel brake, BR: rear wheel brake , S: interlocking mechanism, P: power unit, WR: rear wheel

The front cowl 6 supporting the headlights 37 and the windproof screen 39 covers the front of the head pipe 38 and the sides of the main frame 8 and the upper rear frame 11. A pair of left and right front blinkers 36 is attached to the side surface of the front cowl 6, and a front fender 34 that covers above the front wheel WF is attached in front of the bottom bridge 35. At the rear of the front cowl 6, a pair of left and right rear cowls 14 are arranged. The seat 13 extends back and forth so as to straddle the front cowl 6 and the rear cowl 14, and a fuel tank 59 is disposed inside a pair of left and right upper rear frames 11 covered by the rear cowl 14.

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

According to the above-described interlocking mechanism S, when the brake pedal 27 is depressed with a foot, first, the first equalizer 68 rotates counterclockwise , and the brake rod 20 is pulled. Next, when the rear wheel brake BR starts exerting the braking force and the first equalizer 68 stops rotating, and then the brake pedal 27 is further depressed, the first equalizer 68 rotates around the second swing shaft 70 to a clock. Start rotating in the direction. Accordingly, when the second equalizer 63 rotates counterclockwise , the wire 29a of the second brake cable 29 is pulled by the fifth swing shaft 64, and the front wheel brake BF operates. Then, when the brake pedal 27 is released, the second equalizer 63 returns to the initial position by the elastic force of the return spring 61.

Claims (8)

An interlocking mechanism (S) connected to a brake pedal (27) for interlocking the front wheel brake (BF) and the rear wheel brake (BR), a rotatably supported rear wheel (WR), and a body frame ( 7) A straddle-type vehicle (1) having a swing arm (44) pivotally supported by a swing and a cover member (80) attached to an upper portion of the swing arm (44).
The cover member (80) covers a rear fender (82) of the rear wheel (WR) in front of the vehicle body, and a protective cover (80) covers at least a part of the interlocking mechanism (S) from the vehicle body upper side and the vehicle body side. 87), and is integrally formed. The upper surface (82a) of the rear fender portion (82) has a shape that is inclined so that the position becomes higher toward the rear of the vehicle body,
The upper surface (87a) of the protective cover portion (87) has a shape that is inclined so that the position becomes higher toward the front of the vehicle body,
When viewed from the side of the vehicle body, the uppermost position (A) of the protective cover portion (87) is lower than the uppermost position (B) of the rear fender portion (82),
A joint (95) between the upper surface (82a) of the rear fender (82) and the upper surface (87a) of the protective cover (87) is lower than the uppermost position (A) of the protective cover (87). The straddle-type vehicle according to claim 1, wherein the vehicle is at a position (C). The protective 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 between the protective cover part (87) and the rear fender part (82) so as to stand downward from the vehicle body. The straddle-type vehicle according to claim 1 or 2, wherein   The straddle-type vehicle according to claim 3, wherein the wall member (81) is disposed on a back surface side of the coupling portion (95).   The straddle-type vehicle according to any one of claims 1 to 4, wherein the protective cover (87) has a box shape with at least a front portion and a lower portion of the vehicle body being open. A brake lamp switch (50) connected to the brake pedal (27) is provided on the vehicle body front side of the interlocking mechanism (S).
The vehicle body front end portion (87b) of the protective cover portion (87) is located on the vehicle body rear side and in the vehicle width direction inside of the brake lamp switch (50). A straddle-type vehicle according to claim 1. A pivot frame (42) provided with a swing arm pivot (25) for pivotally supporting the swing arm (44);
The pivot frame (42) is fixed to the rear end of the main frame (8) extending downward from the head pipe (38) to the rear of the vehicle body,
The straddle-type vehicle according to claim 6, wherein the brake pedal (27) and the interlocking mechanism (S) are centrally arranged on the right side in the vehicle width direction of the pivot frame (42).   On the left side of the cover member (80) in the vehicle width direction, a chain cover part (83) that covers an upper part of the drive chain (43) that transmits the rotational power of the power unit (P) to the rear wheel (WR) is integrally formed. The straddle-type vehicle according to claim 7, wherein:

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