SADDLE SEAT VEHICLE

Abstract

Saddle-seat vehicle that features: a swing arm (12) having a front end which is pivotably held by a pivot frame (8) of a vehicle body frame (5) via a pivot shaft (8a) and a rear end which holds a rear wheel (11) to which the vehicle body frame (5) has a pair of left and right main frames (7); a brake line (44) which runs over the swing arm (12); a line fastening section (49a) which is arranged to overlap the pivot frame (8) when viewed from the side, and is configured to fasten an intermediate brake hose (48) which is an intermediate section of the brake line (44) to the pivot frame (8), a brake caliper (42) which is held by one side of the swing arm (12) in the vehicle width direction, and to which one end of the brake line (44) is connected; and a brake modulator (51) which is held by the other side of the vehicle body frame (5) in the vehicle width direction in front of the pivot frame (8), and to which the other end of the brake line (44) is connected, wherein the line fastening section (49a) is provided on a line connecting piece (49) separate from the brake modulator (51) and is arranged on the other side in the vehicle width direction, The intermediate brake hose (48) runs from the line mounting section (49a) towards one side in the vehicle width direction in a space which overlaps the swivel frame (8) when viewed from the side, a second line fastening section (47a) which is designed to fix an end section of the intermediate brake hose (48) on one side of the vehicle width direction on the swing arm (12), which is provided on one side of the swing arm (12) in the vehicle width direction, The intermediate brake hose (48) is attached to the swing arm (12) on one side in the direction of the vehicle width, without being attached to the vehicle body frame (5), The brake modulator (51) is arranged on an inside of the main frame (7) on the other side of the vehicle body frame (5) in the vehicle width direction and is arranged such that at least part of the brake modulator (51) enters an empty space located behind a cylinder (17) of a primary drive (E) and above a rear section of a crankcase (16), A brake pipe (46) is provided, which runs from the brake modulator (51) through the inside of the vehicle body frame (5) to the rear, and The brake pipe (46) is connected to the intermediate brake hose (48) through the pipe connector (49a).

Description

BACKGROUND OF THE INVENTIONField of the invention

[0001] The present invention relates to a saddle seat vehicle. Description of the state of the art

[0002] For example, Japanese patent number JP 6 220 366 B2 discloses a configuration of a motorcycle in which an ABS modulator is disposed on a left side of a rear portion of a vehicle body, a brake pipe extends from the ABS modulator toward the front of a vehicle, the brake pipe is distributed frontward and rearward in the vicinity of a longitudinal center of the vehicle body, and the brake pipe thus reaches the brake calipers of the front and rear brakes.

[0003] JP S57-47 282 A shows a motorcycle with a composite braking system. The composite braking system has two hydraulic brake cylinders, each assigned to a front wheel and a rear wheel. A master cylinder is attached to a back brace of a main frame of a vehicle body of the motorcycle. Two rubber hoses are connected to the master cylinder, one of which is connected to the brake caliper on the rear wheel side. The other rubber hose, which runs towards the front wheel, is provided for a tank rail. In the center of the main frame, in the area of ​​the headset, a cross member is arranged, which connects both sides of the down tube, which is part of the main frame. A connecting bracket is attached to the center of this cross member, and a joint is attached to this connecting bracket. One end of the joint is connected to the end of the brake line, which runs along the tank rail.The other end of the joint is connected to the brake cylinder on the front wheel side via a rubber hose.

[0004] JP 2013-220 661 A shows a semi-trailer vehicle with a pivoting support extending vertically. A center support in the pivoting support is pivotally connected to the front end of a swing arm. The swing arm is intended to movably attach a rear wheel to the pivoting support. Brake lines in the form of metal tubes penetrate an upper support and the center support and are each connected to a first rear connecting element and a second rear connecting element arranged behind these supports. The metal tubes penetrate the upper support and the center support at a point spaced downwardly from the upper support. A rubber hose extends rearwardly from the first rear connecting element and is connected to a rear wheel master cylinder mounted on the right side of the swing arm.Another rubber hose extends from the second rear connection part along the swing arm to the rear and is connected to a rear brake caliper assigned to the rear wheel.

[0005] JP 2019-156246 A shows a brake system for a semi-trailer vehicle, comprising a brake hose, a first hose connected to a master brake cylinder, a first connecting portion, a front hose, a second connecting portion, a pipe, a third connecting portion, and a rear hose. The first hose is further connected to the first connecting portion, which is attached to the main frame above a pivot portion at the front part of a rear swing arm. The front end of the front hose is connected to the first connecting portion, and the front hose extends toward the rear part of the semi-trailer vehicle. The rear end of the front hose is connected to the second connecting portion. The second connecting portion is connected to the front end of the pipe, and the rear end of the pipe is connected to the third connecting portion.The tube runs through a curved section on the swingarm and is protected in this area by a cover strut located between the rear wheel and the curved section of the swingarm. The cover strut also has a shape along the curved section. The front end of the rear hose is connected to the third connecting section, and the rear end of the rear hose is connected to the brake caliper. Thus, the master cylinder is connected to the brake caliper via the brake hose. OVERVIEW OF THE INVENTION

[0006] Therefore, as disclosed in the prior art, when the brake modulator is not provided near the longitudinal center of the vehicle body, there is a problem that the length or the like of the brake pipe is increased, thus pursuing more efficient routing of the brake pipe. In particular, when the brake pipe is routed to intersect a pivot shaft of a swing arm in the longitudinal direction, routing of the brake pipe is necessary with such a problem in mind because there is a need to absorb changes in the routing path of the brake pipe when the swing arm swings.

[0007] One aspect of the present invention is directed to providing a saddle-seat vehicle in which a brake line extending to intersect a pivot shaft in the longitudinal direction can be efficiently laid.

[0008] (1) A saddle-seat vehicle according to one aspect of the present invention includes a swing arm (12) having a front end side swingably supported by a swing frame (8) of a vehicle body frame (5) via a swing shaft (8a), and a rear end side to which a rear wheel (11) is supported, the vehicle body frame (5) including a pair of left and right main frames (7), a brake pipe (44) extending over the swing arm (12), a pipe fixing portion (49a) arranged to overlap the swing frame (8) when viewed in a side view and configured to fix an intermediate brake hose (48), which is an intermediate portion of the brake pipe (44), to the swing frame (8), a brake caliper (42) supported by one side of the swing arm (12) in the vehicle width direction and to which one end side of the brake pipe (44) is connected, and a brake modulator (51),which is held by the other side of the vehicle body frame (5) in the vehicle width direction in front of the swing frame (8), and to which the other end of the brake pipe (44) is connected. The pipe attachment portion (49a) is provided at a pipe connector (49) separate from the brake modulator (51) and arranged on the other side in the vehicle width direction, the intermediate brake hose (48) of the brake pipe (44) extends from the pipe attachment portion (49a) toward one side in the vehicle width direction in a space that overlaps the swing frame (8) when viewed from the side, and a second pipe attachment portion (47a) configured to attach an end portion of the intermediate brake hose (48) on the one side in the vehicle width direction to the swing arm (12),is provided on one side of the swing arm (12) in the vehicle width direction. The intermediate brake hose (48) is attached to the swing arm (12) on one side in the vehicle width direction without being attached to the vehicle body frame (5). The brake modulator (51) is arranged on an inner side of the main frame (7) on the other side of the vehicle body frame (5) in the vehicle width direction and is arranged such that at least a part of the brake modulator (51) enters an empty space located behind a cylinder (17) of an engine (E) and above a rear portion of a crankcase (16). A brake pipe (46) is provided, which extends rearwardly from the brake modulator (51) through the inside of the vehicle frame (5). The brake pipe (46) is connected to the intermediate brake hose (48) through the pipe joint (49a).

[0009] According to the configuration of the aspect of the above-mentioned (1), the intermediate portion of the brake pipe is fixed at a position overlapping the swing frame when viewed from a side view. Accordingly, the following effects are exhibited even when the brake pipe extends to intersect the swing frame in the longitudinal direction. That is, when the intermediate portion of the brake pipe is fixed by the pipe fixing portion, the pipe fixing portion comes as close as possible to the swing shaft. For this reason, a routing structure can be provided in which the brake pipe is not easily disturbed by the swing arm swing (bending and stretching of the intermediate portion of the brake pipe are small).An upstream side of the brake pipe (one side of the brake modulator) is fixed by one pipe fixing portion on the same side as the brake modulator (the other side in the vehicle width direction), and a downstream side of the brake pipe (one side of the brake caliper) is fixed by the second pipe fixing portion on the same side as the brake caliper (one side in the vehicle width direction). The brake pipe is provided with an intermediate portion (the intermediate brake hose) as an intersection area in the vehicle width direction in a space that overlaps the swing frame (a space near the swing shaft) when viewed from the side. Accordingly, when the swing arm swings, the intersection area (the intermediate brake hose) of the brake pipe in the vehicle width direction can be used as a region that absorbs a change in the routing path of the brake pipe.Since the intermediate brake hose is located close to the pivot shaft, a routing structure can be provided in which bending and stretching of the intermediate brake hose according to the swing arm swing is minimal. Since the upstream and downstream sides of the intermediate brake hose are fixed to the vehicle body frame and the swing arm, respectively, the bending and stretching range of the intermediate brake hose can be limited, and the routing of the brake line can be stabilized.

[0010] (2) In the aspect of the above-mentioned (1), the brake pipe (44) may pass inside the swing frame (8) in a vehicle width direction, and the pipe fixing portion (49a) may be arranged on an inside of the swing frame (8) in the vehicle width direction.

[0011] According to the design of the aspect of the above-mentioned (2), since the brake pipe passes through the inside of the swing frame in the vehicle width direction, and the pipe fixing portion is fixed to the swing frame on the inside of the swing frame in the vehicle width direction, the following effects are exhibited. That is, the brake pipe and the pipe fixing portion can be formed in an unobtrusive manner to improve the appearance, interference between the driver's feet and the brake pipe and the pipe fixing portion can be alleviated, and further, it is possible to protect the brake pipe and the pipe fixing portion from external interference such as flying stones or the like.

[0012] (3) In the aspect of the above-mentioned (1) or (2), the brake line (44) may be laid over a pivot shaft (8a) of the swing arm (12).

[0013] According to the design of the aspect of the above-mentioned (3), since the brake pipe is laid at a position higher than that of the pivot shaft, it is possible to protect the brake pipe from interference such as flying stones or the like from a road surface.

[0014] (4) In the aspect according to any one of the above-mentioned (1) to (3), a drive chain (26) configured to transmit power of a primary drive (E) to the rear wheel (11) may be provided, and the brake line (44) may be laid higher than the drive chain (26)

[0015] According to the design of the aspect of the above-mentioned (4), since the brake pipe is laid at a position higher than that of the drive chain, it is possible to protect the brake pipe from interference such as flying stones or the like from a road surface.

[0016] (5) In the aspect of the above-mentioned (4), a rear shock absorber (13) configured to damp swinging of the swing arm (12) and a seat (19) on which a driver sits may be provided, and the wire fixing portion (49a) may be arranged rearward of the primary drive (E), forward of the rear shock absorber (13), higher than the drive chain (26), and below the seat (19).

[0017] According to the configuration of the aspect of the above-mentioned (5), since the wire fixing portion is arranged in a space surrounded by vehicle parts such as a primary drive, a rear shock absorber, a drive chain, and a seat, the wire fixing portion can be formed in an inconspicuous manner to improve the appearance, and it is possible to protect the wire fixing portion from interference such as flying stones or the like.

[0018] (6) In the aspect of the above-mentioned (1) to (5), the wire fixing portion (49a) and the brake modulator (51) may be arranged at positions where the heights thereof in a vehicle up / down direction overlap with each other.

[0019] According to the configuration of the aspect of the above-mentioned (6), since the pipe fixing portion and the brake modulator have overlapping height positions in the vehicle up / down direction with each other, the brake pipe can be laid on the side of the vehicle body frame while minimizing the displacement in the vehicle up / down direction and the length of the brake pipe can be reduced.

[0020] (7) In the aspect of the above-mentioned (1) to (6), a cover member (55) may be provided which is configured to hold the brake modulator (51) while covering the brake modulator (51) from one side of a prime mover (E), and which is held by the vehicle body frame (5).

[0021] According to the configuration of the aspect of (7) described above, since the brake modulator is covered with the cowling member from the prime mover side, a heat influence on the brake modulator due to the heat of the prime mover can be reduced, and since the brake modulator is supported by the vehicle body frame via the cowling member, a degree of freedom of the support structure of the brake modulator can be increased.

[0022] (8) In the aspect of the aspect of any one of the above-described (1) to (7), the wire fixing portion (49a) may be arranged behind the pivot shaft (8a) of the swing arm (12).

[0023] According to the configuration of the aspect of (8) described above, since the pipe fixing portion is arranged rearward of the swing arm pivot shaft, the pipe fixing portion on the vehicle body frame side and the second pipe fixing portion on the swing arm side can be made as close to each other as possible, and the length of the brake pipe can be reduced.

[0024] According to the aspect of the present invention, it is possible to provide a saddle-seat vehicle configured to efficiently route a brake pipe extending to intersect a pivot shaft in the longitudinal direction. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a left side view of a motorcycle according to an embodiment of the present invention. Fig. 2 is a configuration view of a brake device of the motorcycle. Fig. 3 is a left side view showing a major component of the motorcycle. Fig. Figure 4 is a right side view showing a major component of the motorcycle. Fig. 5 is a plan view showing a main component of the motorcycle. Fig. 6 is a perspective view of a brake line bracket of the motorcycle. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, an embodiment of the present invention will be described with reference to the attached drawings. Furthermore, the directions forward, backward, left, right, etc. in the following description are the same directions as in a vehicle described below unless the context clearly indicates otherwise. Moreover, at appropriate positions in the drawings used in the following description, an arrow FR indicates a vehicle-forward direction, an arrow LH indicates a vehicle-left direction, an arrow UP indicates a vehicle-upward direction, and a line CL indicates a lateral center of a vehicle body. The "between" used in the embodiment means not only a center between two ends of a subject, but also includes a range between both ends of the subject. <Gesamtes Fahrzeug>

[0026] Fig. 1 shows a motorcycle (a saddle-seat type vehicle) 1 of one embodiment. A front wheel 2 of the motorcycle 1 is supported by lower end portions of the left and right front forks 3. Upper portions of the left and right front forks 3 are steerably supported by a head tube 6 of a vehicle body frame 5 via a handlebar stem 4. A handlebar 4a for steering is attached to an upper portion of the handlebar stem 4.

[0027] A rear wheel 11 of the motorcycle 1 is supported by a rear end portion of the swing arm 12. A front end portion of the swing arm 12 is vertically swingably supported by left and right swing frames 8 of the vehicle body frame 5 via a pivot shaft 8a. A lower end portion of a rear shock absorber 13 is connected to a front portion of the swing arm 12 via a link mechanism 13a. An upper end portion of the rear shock absorber 13 is connected, for example, to a damper link portion 12a projecting upward from the front portion of the swing arm 12. Reference numeral 12L in the drawings denotes the left arm of the swing arm 12, and a right arm of the swing arm 12 is supported by the reference frame 12R in Fig. 5. While the left and right arms 12L and 12R are laterally asymmetrical to each other, each arm has an upper section that has an upwardly convex curve shape.

[0028] The motorcycle 1 is not limited to a configuration in which an upper end portion of the rear shock absorber 13 is connected to the swing arm 12, and may have a configuration in which the upper end portion of the rear shock absorber 13 is connected to a cross frame that forms a bridge between the left and right swing frames 8 and a structural body of the engine E. In Fig. 1, while the upper end portion of the rear shock absorber 13 is arranged behind the lower end portion (the rear shock absorber 13 is inclined rearward), the rear shock absorber 13 may be arranged vertically or inclined forward.

[0029] An engine (internal combustion engine) E, which is a primary drive of the motorcycle 1, is mounted in the vehicle frame 5. A fuel tank 18, which is configured to store fuel for the engine E, is arranged above the engine E via the left and right main frames 7 of the vehicle body frame 5. A main seat 19, on which a driver sits, and a passenger seat 19a, on which a passenger sits behind the driver, are arranged behind the fuel tank 18 via the left and right seat frames 9 of the vehicle body frame 5.

[0030] A pair of left and right main steps 21a, on which the driver's feet are placed, are arranged behind the left and right swing frames 8. A pair of left and right passenger steps 21b, on which the feet of the passenger sitting behind the driver are placed, are arranged under longitudinally intermediate portions of the left and right seat frames 9. A front cowl 22, configured to cover the surroundings of the vehicle body frame 5 and the engine E, is attached to the front portion of the vehicle body. A seat cowl (a rear cowl) 23, configured to cover the surroundings of a seat frame 9, is attached to the rear portion of the vehicle body. <fahrzeugkarosserierahmen>

[0031] The vehicle body frame 5 is formed by integrally joining a plurality of kinds of steel members by welding or the like.

[0032] With reference to Fig. 1 and Fig. 5, the vehicle body frame 5 includes the steering head tube 6 disposed at the front end portion, the pair of left and right main frames 7 extending downward and rearward from the steering head tube 6, and the pair of left and right swing frames 8 extending downward from rear lower end portions of the left and right main frames 7. The front end portions of the pair of left and right seat frames 9 extending rearward are connected to rear portions of the left and right main frames 7 via bolt fasteners or the like.

[0033] The engine E has a crankshaft parallel to a vehicle width direction (a left / right direction).

[0034] With reference to Fig. 1, the engine E includes a crankcase 16 forming a lower portion and a cylinder 17 upright from the front portion of the crankcase 16. The cylinder 17 is inclined forward so that the upper portion is located further forward. An intake passage (including a throttle body) of an engine intake system is connected to a rear portion of the cylinder 17, and the intake passage is connected to an air cleaner disposed in front of the fuel tank 18 (none shown). A radiator 24 configured to cool an engine is disposed in front of the cylinder 17.

[0035] An exhaust pipe 25 of an engine exhaust system is connected to the front portion of the cylinder 17. The exhaust pipe 25 extends forward and downward from the front portion of the cylinder 17 and extends to be bent rearward under the engine E. The exhaust pipe 25 is connected, for example, to a catalyst 25a disposed under the swing frame 8. An exhaust pipe 25b on the downstream side extends upward from the catalyst 25a. For example, the exhaust pipe 25b on the downstream side extends upward from the front portion of the swing arm 12 on the right side (see Fig. 5), is bent upward and backward in the vicinity of the seat frame 9 and is then connected to a muffler 25c supported by the seat frame 9. Furthermore, the muffler 25c is not limited to being supported by the seat frame 9, and the muffler 25c may be disposed on an outer side of the rear portion of the vehicle body (on a side outside the rear wheel 11) or below the vehicle body.

[0036] A clutch and a gear are housed in the rear portion of the crankcase 16. An output shaft 16a of the gear protrudes from the rear portion of the crankcase 16 on the left side, and a drive chain 26 of the chain-type transmission mechanism forms a bridge between the output shaft 16a and the rear wheel 11.

[0037] With reference also to Fig. 2, in the drive chain 26, a portion extending higher than the pivot shaft 8a in the vehicle front / rear direction is referred to as a tension side 26a when driving the rear wheel 11, and a portion extending lower than the pivot shaft 8a in the vehicle front / rear direction is referred to as a slack side 26b when driving the rear wheel 11.

[0038] Engine mounts 7a extending obliquely backward and downward are provided integrally with front portions of the left and right main frames 7 at a lower side thereof. A connecting beam 7b extending obliquely forward and downward from an intermediate portion of the main frame 7 in a longitudinal direction forms a bridge in the longitudinal direction between the engine mount 7a and the main frame 7. Reference numeral 7c in the drawings denotes an upwardly convexly curved edge formed between a lower edge of the connecting beam 7b and a lower edge of the rear portion of the main frame 7 as viewed in a side view of the vehicle. <bremsvorrichtung>

[0039] As in Fig. 2, the motorcycle 1 has front and rear hydraulic brakes BF and BR. The front wheel brake BF includes, for example, left and right brake discs 31 provided on both the left and right sides of the front wheel 2 and rotated integrally with the front wheel 2, left and right brake calipers (subordinate cylinders) 32 operated by supplying hydraulic pressure to clamp the brake discs 31, and a brake line (hydraulic line) 34 that bridges the left and right brake calipers 32 and the brake modulator 41 (described below). The left and right brake calipers 32 are held by the left and right front forks 3 (see Fig. 1). A pair of brake pads (not shown) designed to clamp the brake discs 31 are held on the brake caliper 32. The brake line 34 includes a hose, a pipe, and various connectors. Each of the brake calipers 32 compresses the brake discs 31 and brakes the rotation of the front wheel 2 when hydraulic pressure is supplied from the brake modulator 51.

[0040] The rear wheel brake BR includes a brake disc 41 provided on a right side of the rear wheel 11 (a side opposite the drive chain 26) and rotating integrally with the rear wheel 11, a brake caliper (a sub-cylinder) 42 operated by supplying hydraulic pressure to clamp the brake disc 41, and a brake pipe (hydraulic pipe) 44 that bridges the brake caliper 42 and the brake modulator 51. The brake caliper 42 is supported by the right arm 12R of the swing arm 12. A pair of brake pads (not shown) configured to clamp the brake discs 41 are held on the brake caliper 42. The brake pipe 44 includes a hose, a pipe, and various joints. The brake caliper 42 clamps the brake disc 41 and brakes the rotation of the rear wheel 11 when hydraulic pressure is supplied from the brake modulator 51.

[0041] A brake lever 33 as a brake operating member configured to operate the front wheel brake BF is primarily arranged in the vicinity of the right grip of the handlebar 4a. A brake pedal 43 as a brake operating member configured to operate the rear wheel brake BR is primarily arranged in the vicinity of the main step 21a on the right side of the vehicle body. The brake lever 33 and the brake pedal 43 are mechanically or electrically connected to the brake modulator 51. The brake modulator 51 is operated according to an operating force on the brake lever 33 and the brake pedal 43, a driving situation of the vehicle, or the like, and supplies hydraulic pressure to the brake calipers 32 and 42 of the front and rear brakes BF and BR. For example, the brake modulator 51 performs control of an anti-lock brake system (ABS), and controls a front / rear locking brake (a combined braking system (CBS)).Furthermore, the brake lever 33 and the brake pedal 43 can be directly connected to the brake calipers 32 and 42 of the front and rear brakes BF and BR.

[0042] The brake modulator 51 integrally includes a fluid pressure circuit component including a valve, an actuator, and the like configured to control the supply and discharge of a brake fluid, and a control component configured to control an operation of the fluid pressure circuit component (neither is shown).

[0043] With reference to Fig. 3 to Fig. 5, the brake modulator 51 is arranged to be biased to the left with respect to a lateral center CL of the vehicle body. The brake modulator 51 is arranged such that an outer portion in the vehicle width direction overlaps with the left main frame 7, and an inner portion in the vehicle width direction is located further to an inner side than the left main frame 7 in the vehicle width direction in a plan view of the vehicle. The brake modulator 51 is arranged below the main frame 7 (specifically, below a curved edge 7c) as viewed in a side view of the vehicle and contributes to lowering a center of gravity of the motorcycle 1. The brake modulator 51 is arranged such that at least a part of it enters an empty space located behind the cylinder 17 of the engine E and above the rear portion of the crankcase 16 (see Fig. 1).

[0044] The brake modulator 51 is housed and held in a trim member 55. The trim member 55 includes, for example, a trim portion 56 configured to cover the brake modulator 51 from an inner side in the vehicle width direction (the engine E side), a pair of front attachment portions 57 attached to the connecting beam 7b of the vehicle body frame 5 in front of and above the brake modulator 51, and a single rear attachment portion 58 attached to the rear portion of the main frame 7 behind and above the brake modulator 51. The trim member 55 is integrally formed, for example, from a synthetic resin. The front and rear attachment portions 57 and 58 are attached to the vehicle body frame 5 by bolts that are attached and removed from an outer side in the vehicle width direction.For example, the front and rear mounting portions 57 and 58 are mounted to the vehicle body frame 5 via a rubber member. Furthermore, the trim member 55 may be attached and fixed to the vehicle body frame 5, and the brake modulator 51 may be mounted to the trim member 55 via a rubber member.

[0045] The brake modulator 51 is arranged on an inner side of the left main frame 7 in the vehicle width direction, which makes it unobtrusive in appearance and less susceptible to external interference. The brake modulator 51 is less susceptible to thermal influences from the engine E due to the brake modulator 51 cover with the cover member 55 from the inner side in the vehicle width direction (the engine E side). The brake modulator 51 can perform only one of ABS control and CBS control. The brake modulator 51 is not limited to a function as a 2-channel type ABS modulator corresponding to the front and rear brakes BF and BR, and can perform a function as a 1-channel type ABS modulator corresponding to only one of the front and rear brakes BF and BR.

[0046] The following describes a routing structure of the brake line 44 of the rear wheel brake BR.

[0047] With reference to Fig. 2, the brake pipe 44 extends forward / rearward in the vehicle direction to intersect the swing frame 8, which extends upward / downward in the vehicle direction as viewed in a side view of the vehicle. The brake pipe 44 includes a brake hose 45 extending forward from the brake caliper 42 along an upper portion of the right arm 12R of the swing arm 12, and a brake pipe 46 extending rearward from the brake modulator 51 along a lower portion of the left main frame 7 of the vehicle body frame 5, and also includes a connecting pipe 47, an intermediate brake hose 48, and a pipe joint 49, which will be described below.

[0048] The brake hose 45 has a rear end portion connected to the brake caliper 42. The brake hose 45 is formed of, for example, a synthetic resin, a metal mesh, or the like. The brake hose 45 can be bent freely according to the handling path. The brake hose 45 extends forward / rearward in the vehicle direction to form a bent shape that protrudes upward along the upper portion of the swing arm 12 as viewed in a side view. The brake hose 45 extends upward from the swing arm 12. The front end portion of the brake hose 45 is connected to a rear end portion of the connecting pipe 47 formed of a metal on a left side of the damper connection portion 12a of the swing arm 12.

[0049] The brake piping 46 is formed from a metal conduit made of steel, copper, or the like. The brake piping 46 is formed in a predetermined handling shape. The brake piping 46 has lower elasticity than the brake hose 45 and a small degree of freedom of handling. However, the brake piping 46 is easily arranged in a specific handling path, such as around the vehicle body frame 5. The brake piping 46 is thinner than the brake hose 45 and can be laid compactly along the vehicle body frame 5 and the like.

[0050] A front end portion of the brake hose 45 and a rear end portion of the brake pipe 46 are connected to each other via the connecting pipe 47, the intermediate brake hose 48 and the pipe joint 49.

[0051] With reference to Fig. 3 to Fig. 5, the connecting pipe 47 connects the brake hose 45 and the intermediate brake hose 48. The connecting pipe 47 is inclined forward and downward in a side view so as to extend along a right upper portion of the front portion of the swing arm 12. A front end side of the connecting pipe 47 is bent inward in the vehicle width direction.

[0052] A right pipe fixing portion 47a configured to fix the connecting pipe 47 to the right side portion of the swing arm 12 is provided integrally with a longitudinal intermediate portion of the connecting pipe 47. The right pipe fixing portion 47a is formed in a rectangular parallelepiped shape and is fixed to the right side portion of the swing arm 12 by a bolt that is screwed and unscrewed from an outer side in the vehicle width direction. The right pipe fixing portion 47a is fixed to the right side portion of the swing arm 12 together with a pipe cover 65, which will be described below.

[0053] The right pipe fixing portion 47a is disposed on an inner side of the swing frame 8 in the vehicle width direction. The right pipe fixing portion 47a is disposed to cause the inner side surface of the right swing frame 8 in the vehicle width direction and a position in the vehicle width direction to approach each other. The right pipe fixing portion 47a is disposed above the pivot shaft 8a of the swing arm 12 and below a connecting shaft 12a1 at the upper end of the rear shock absorber 13. The right pipe fixing portion 47a is disposed rearward of the swing frame 8 (and the pivot shaft 8a) and forward of the connecting shaft 12a1 at the upper end of the rear shock absorber 13. Accordingly, the right pipe fixing portion 47a approaches the pivot shaft 8a as closely as possible.

[0054] The intermediate brake hose 48, which extends in the vehicle width direction (the vehicle left / right direction), is arranged above the swing shaft 8a between the left and right swing frames 8. The brake hose 48 is formed, similarly to the brake hose 45, from, for example, a synthetic resin, a metal mesh, or the like. The intermediate brake hose 48 can be freely bent according to the handling path and is elastically deformable according to a swing of the swing arm 12. The intermediate brake hose 48 extends obliquely forward and downward from the front end portion of the connecting pipe 47 and inward in the vehicle width direction. The intermediate brake hose 48 extends to form a bent shape that protrudes forward and downward from the right side of the vehicle body to the left side of the vehicle body.The right end portion of the intermediate brake hose 48 is connected to the connecting pipe 47, and the left end portion of the intermediate brake hose 48 is connected to the pipe connecting piece 49.

[0055] The pipe joint 49 connects the intermediate brake hose 48 and the brake pipe 46 to each other. The pipe joint 49 is arranged on an inner side of the left swing frame 8 in the vehicle width direction. The pipe joint 49 is arranged on an inner side surface of the left swing frame 8 in the vehicle width direction. The pipe joint 49 is arranged to overlap the swing frame 8 as viewed in a side view. The pipe joint 49 is arranged above and rearward of the pivot shaft 8a of the swing arm 12. The pipe joint 49 is arranged rearward of the engine E and forward of the rear shock absorber 13 as viewed in a side view of the vehicle. The pipe joint 49 is arranged above the upper portion of the drive chain 26 (the tension side 26a when the vehicle is traveling) and below the seat 19 as viewed in a side view of the vehicle.Furthermore, the pipe joint 49 is arranged below the connecting shaft 12a1 at the upper end of the rear shock absorber 13. Accordingly, the pipe joint 49 is as close as possible to the pivot shaft 8a.

[0056] The line connector 49 is held and fixed by the vehicle body frame 5 (the pivot frame 8) via a support bracket 61, which will be described below. The intermediate section of the brake line 44 is held and fixed by the vehicle body frame 5 (the pivot frame 8) via the line connector 49 and the support bracket 61.

[0057] The brake line 44 passes through the swing frame 8 in the vehicle direction in the area that intersects the swing frame 8 when viewed from the side of the vehicle. The brake line 44 is arranged above the swing shaft 8a in the up / down direction of the vehicle. The brake line 44 is arranged above the upper portion of the drive chain 26 (the tension side 26a when the vehicle is traveling).

[0058] The pipe joint 49 is formed in a rectangular parallelepiped shape elongated at right angles in the vehicle front / rear direction and connected to the rear end portion of the brake pipe 46 on the front surface side, while a connecting pipe 49b extends toward the bottom thereof. The connecting pipe 49b extends downward and is then bent inward in the vehicle width direction. The left end portion of the intermediate brake hose 48 is connected to a tip portion of the internal combustion engine 49b. A left pipe fixing portion 49a, configured to fix the left side of the brake pipe 44 to the left and right swing frames 8 via the support bracket 61, is provided at the rear portion of the pipe joint 49.

[0059] With reference also to Fig. 6, the support bracket 61 includes left and right attachment parts 62 and 63 extending toward rear surface sides of the left and right swing frames 8, and a bridging portion 64 extending in the vehicle width direction between the base end portions of the left and right attachment parts 62 and 63. The support bracket 61 is integrally formed, for example, by bending a steel plate into a predetermined shape. Tip portions 62a and 63a of the left and right attachment parts 62 and 63 are attached to the left and right swing frames 8, for example, by bolts that are attached and detached from the rear. For example, the left and right attachment parts 62 and 63 are mounted to the left and right swing frames 8 via rubber members.The left wire attachment portion 49a of the wire connector 49 is fastened and fixed in the vehicle width direction to an inner side surface 64a oriented toward an inner side in the vehicle width direction at the left end portion of the bridging portion 64 by a screw or the like. Furthermore, the wire connector 49 may be mounted to the support bracket 61 via a rubber member, and the support bracket 61 may be fastened and fixed to the vehicle body frame 5.

[0060] With reference to Fig. 3 to Fig. 5, the pipe cover 65 covers the area of ​​the connecting pipe 47 behind the attachment portion 47a and the front end portion of the brake hose 45 from an outer side in the vehicle width direction. Like the connecting pipe 47, the pipe cover 65 extends obliquely forward and downward in a side view, thereby extending along the right upper portion of the front portion of the swing arm 12.The pipe cover 65 includes a first plate portion 66 formed in a plate shape substantially perpendicular to the vehicle width direction and disposed on an outer side of the brake pipe 44 in the vehicle width direction, a standing plate portion 67 erected from an upper edge of the first plate portion 66 toward the inner side in the vehicle width direction, and a second plate portion 68 substantially parallel to the first plate portion 66 and erected from the inner side edge of the standing plate portion 67 on the inner side in the vehicle width direction. The pipe cover 65 is integrally formed, for example, by bending a steel plate into a predetermined shape.

[0061] A first fastening portion 66a, which is fastened and fixed to the swing arm 12 together with the fastening portion 47a while abutting the outer side surface of the fastening portion 47a, is provided at the front portion of the first plate portion 66. A positioning portion 67a, which abuts the upper surface of the fastening portion 47a, is provided at the front portion of the standing plate portion 67. A notch 67b, which bypasses the corner portion of the fastening portion 47a, is formed between the positioning portion 67a and the first fastening portion 66a. A second fastening portion 68a, which is fastened and fixed only to the swing arm 12, is provided at the second plate portion 68.The downstream side exhaust pipe 25b is arranged on the right side of the front portion of the swing arm 12 (the outer side in the vehicle width direction), and the pipe cover 65 suppresses heat input from the downstream side exhaust pipe 25b with respect to the brake pipe 44. The pipe cover 65 may be omitted when the motorcycle 1 is not of the center muffler type (when an exhaust pipe is not arranged on one side of the swing arm 12).

[0062] The brake pipe 46 extends forward from the pipe joint 49 while being displaced upward. Here, the brake modulator 51 and the pipe joint 49 overlap with each other at the height position in the vehicle up / down direction. For this reason, up / down displacement of the brake pipe 46 in the vehicle direction is minimized. After the brake pipe 46 reaches the inner side of the brake modulator 51 in the vehicle width direction, the brake pipe 46 is bent upward and folded downward above the brake modulator 51. The tip portion (the lower end portion) of the brake pipe 46 folded downward is connected to an exit port provided on one side of the upper surface of the brake modulator 51.In addition to the output port, an output port configured to connect the brake lines 34 reaching the brake calipers 32 of the front wheel brake BF and a pair of input ports configured to connect the brake lines extending from the brake lever 33 and the brake pedal 43 are provided on the side of the top of the brake modulator 51.

[0063] The brake caliper 42 is arranged above a rear wheel axle 11a. The brake hose 45 and the connecting pipe 47 are arranged above the swing arm 12. The intermediate brake hose 48 and the connecting pipe 49 are arranged above the pivot shaft 8a. The brake modulator 51 is arranged at the same height as that of the pipe joint 49. Accordingly, the entire brake pipe 44 reaching the brake modulator 51 from the brake caliper 42 is arranged above the swing arm 12 and the pivot shaft 8a. For this reason, upward / downward displacement of the brake pipe 44 in the vehicle direction is minimized, and a length of the brake pipe 44 is minimized.

[0064] As described above, the motorcycle 1 according to the embodiment includes a swing arm 12 having a front end side swingably supported by a swing frame 8 of the vehicle body frame 5 via a swing shaft 8a, and a rear end side to which a rear wheel 11 is supported, a brake pipe 44 extending above the swing arm 12, and the left pipe fixing portion 49a is arranged to overlap the swing frame 8 in a side view, and is configured to fix an intermediate portion (intermediate brake hose 48) of the brake pipe 44 to the swing frame 8.

[0065] According to the design, the intermediate brake hose 48 of the brake pipe 44 is fixed at a position overlapping the swing frame 8 when viewed from a side view. Accordingly, the following effects are exhibited even when the brake pipe 44 extends to intersect the swing frame 8 in the longitudinal direction. That is, when the intermediate portion (the intermediate brake hose 48) of the brake pipe 44 is fixed by the pipe fixing portion 49a, the pipe fixing portion 49a approaches the pivot shaft 8a as closely as possible. For this reason, a routing structure can be provided in which the brake pipe 44 is less susceptible to the swing of the swing arm 12 (the intermediate brake hose 48 of the brake pipe 44 has less bending and stretching).

[0066] In the motorcycle 1 according to the embodiment, the brake pipe 44 passes inside the swing frame 8 in a vehicle width direction, and the left pipe fixing portion 49a is arranged on an inside of the swing frame 8 in the vehicle width direction.

[0067] According to the configuration, since the brake pipe 44 passes through the inside of the swing frame 8 in the vehicle width direction, and the left pipe fixing portion 49a is fixed to the swing frame 8 on the inside of the swing frame 8 in the vehicle width direction, the following effects are exhibited. That is, the brake pipe 44 and the left pipe fixing portion 49a can be formed in an unobtrusive manner to improve the appearance, interference between the driver's feet and the brake pipe 44 and the left pipe fixing portion 49a can be alleviated, and further, it is possible to protect the brake pipe 44 and the left pipe fixing portion 49a from external interference such as flying stones or the like.

[0068] In the motorcycle 1 according to the embodiment, the brake line 44 is laid higher than a pivot shaft 8a of the swing arm 12.

[0069] According to the design, since the brake pipe 44 is laid at a position higher than that of the pivot shaft 8a, it is possible to protect the brake pipe 44 from interference such as flying stones or the like from a road surface.

[0070] In the motorcycle 1 according to the embodiment, the drive chain 26 is configured to transmit power of the engine E to the rear wheel 11, and the brake line 44 is laid higher than the drive chain 26.

[0071] According to the design, since the brake pipe 44 is laid at a position higher than that of the drive chain 26, it is possible to protect the brake pipe 44 from interference such as flying stones or the like from a road surface.

[0072] In the motorcycle 1 according to the embodiment, a rear shock absorber 13 configured to dampen the swinging of the swing arm 12 and the seat 19 on which a rider sits are provided, and the left pipe fixing portion 49a is arranged rearward of the engine E in front of the rear shock absorber 13 higher than the drive chain 26 and lower than the seat 19.

[0073] According to the configuration, since the left wire fixing portion 49a is disposed in a space surrounded by vehicle parts such as the engine E, a rear shock absorber 13, the drive chain 26, and the seat 19, the left wire fixing portion 49a can be formed in an inconspicuous manner to improve the appearance, and it is possible to protect the left wire fixing portion 49a from interference such as flying stones or the like.

[0074] In the motorcycle 1 according to the embodiment, the brake caliper 42, which is supported by one side (a right side) of the swing arm 12 in the vehicle width direction and to which one end side of the brake pipe 44 is connected, and the brake modulator 51, which is supported by the other side (a left side) of the vehicle body frame 5 further forward in the vehicle width direction than the swing frame 8 and to which the other end side of the brake pipe 44 is connected, are provided. The left pipe fixing portion 49a is arranged on the same side as the brake modulator 51. The intermediate portion (the intermediate brake hose 48) of the brake pipe 44 extends from the pipe fixing portion 49a toward one side in the vehicle width direction in the space overlapping the swing frame 8 in a side view, and the right pipe fixing portion 47a, which is configuredto fix the brake line 44 (the connecting line 47) to the swing arm 12, is provided on one side of the swing arm 12 in the vehicle width direction.,

[0075] According to the configuration, an upstream side of the brake pipe 44 (one side of the brake modulator 51) is fixed by a left pipe fixing portion 49a on the same side as the brake modulator 51 (the other side in the vehicle width direction), and a downstream side of the brake pipe 44 (one side of the brake caliper 42) is fixed by the right pipe fixing portion 47a on the same side as the brake caliper 42 (one side in the vehicle width direction). The brake pipe 44 provides the intermediate brake hose 48 as an intersection portion in the vehicle width direction in a space overlapping the swing frame 8 (a space near the swing shaft 8a) when viewed from a side view.Accordingly, when the swing arm 12 swings, the intersection area (the intermediate brake hose 48) of the brake pipe 44 in the vehicle width direction can be used as a region that absorbs a change in the routing path of the brake pipe 44. Since the intermediate brake hose 48 is arranged near the pivot shaft 8a, bending and stretching of the intermediate brake hose 48 according to the swing of the swing arm 12 can be mitigated. Since the upstream side and the downstream side of the intermediate brake hose 44 are fixed to the vehicle body frame 5 and the swing arm 12, respectively, a bending and stretching area of ​​the intermediate brake hose 48 can be restricted, and routing of the brake pipe 44 can be stabilized.

[0076] In the motorcycle 1 according to the embodiment, the left pipe fixing portion 49a and the brake modulator 51 are arranged at positions where the heights thereof in a vehicle up / down direction overlap with each other.

[0077] According to the configuration, since the left pipe fixing portion 49a and the brake modulator 51 wrap the height position in the vehicle up / down direction with each other, the brake pipe 44 can be laid while minimizing the displacement in the vehicle up and down direction, and the length of the brake pipe 44 can be reduced.

[0078] In the motorcycle 1 according to the embodiment, a cowling member 55 is provided which is configured to hold the brake modulator 51 while covering the brake modulator 51 from the engine E side and which is held by the vehicle body frame 5.

[0079] According to the configuration, since the brake modulator 51 is covered with the cowling member 55 from the engine E side, a heat influence on the brake modulator 51 due to the heat of the engine E can be reduced, and since the brake modulator 51 is supported by the vehicle body frame 5 via the cowling member 55, a degree of freedom of the support structure of the brake modulator 51 can be increased.

[0080] In the motorcycle 1 according to the embodiment, the left pipe fixing portion 49a is arranged behind the pivot shaft 8a of the swing arm 12.

[0081] According to the configuration, since the pipe fixing portion 49a is disposed rearward of the pivot shaft 8a of the swing arm 12, the left pipe fixing portion 49a on the vehicle body frame 5 side and the right pipe fixing portion 47a on the swing arm 12 side can approach as close as possible, and the length of the brake pipe 44 can be reduced.

[0082] Furthermore, the present invention is not limited to the embodiment, and for example, all vehicles on which a rider rides on the vehicle body are included as the saddle seat vehicle, and in addition to a motorcycle (including a motorized bicycle and a scooter type vehicle), a three-wheeled vehicle (including a bicycle with two front wheels and one rear wheel in addition to a vehicle with one front wheel and two rear wheels) or a four-wheeled vehicle may also be included, and a vehicle including an electric motor as a prime mover may also be included.

[0083] While preferred embodiments of the invention have been described and illustrated above, it should be understood that these are merely examples of the invention and should not be considered limiting. Additions, omissions, substitutions, and other modifications may be made without departing from the scope of the present invention. Accordingly, the invention is not to be considered limited by the above description and is limited only by the scope of the appended claims.< / bremsvorrichtung> < / fahrzeugkarosserierahmen>

Claims

[1] Saddle-seat vehicle which has: a swing arm (12) having a front end side swingably supported by a swing frame (8) of a vehicle body frame (5) via a swing shaft (8a) and a rear end side on which a rear wheel (11) is supported, the vehicle body frame (5) having a pair of left and right main frames (7); a brake line (44) running over the swing arm (12); a line fastening portion (49a) arranged to overlap the pivot frame (8) when viewed in a side view and configured to fasten an intermediate brake hose (48), which is an intermediate portion of the brake line (44), to the pivot frame (8), a brake caliper (42) supported by one side of the swing arm (12) in the vehicle width direction and to which one end side of the brake pipe (44) is connected; and a brake modulator (51) which is held by the other side of the vehicle body frame (5) in the vehicle width direction in front of the swing frame (8) and to which the other end side of the brake line (44) is connected, wherein the line fixing portion (49a) is provided on a line connecting piece (49) separate from the brake modulator (51) and is arranged on the other side in the vehicle width direction, the intermediate brake hose (48) extends from the line fixing portion (49a) toward one side in the vehicle width direction in a space which overlaps the swing frame (8) when viewed in a side view, a second line fixing portion (47a) configured to fix an end portion of the intermediate brake hose (48) on the one side of the vehicle width direction to the swing arm (12) is provided on the one side of the swing arm (12) in the vehicle width direction, the intermediate brake hose (48) is attached to the swing arm (12) on one side in the vehicle width direction without being attached to the vehicle body frame (5), the brake modulator (51) is arranged on an inner side of the main frame (7) of the other side of the vehicle body frame (5) in the vehicle width direction and is arranged such that at least a part of the brake modulator (51) enters an empty space located behind a cylinder (17) of a primary drive (E) and above a rear portion of a crankcase (16), a brake pipe (46) is provided which runs from the brake modulator (51) through the inside of the vehicle body frame (5) to the rear, and the brake pipe (46) is connected to the intermediate brake hose (48) through the pipe connector (49a). [2] A saddle seat vehicle according to claim 1, wherein the brake pipe (44) passes inside the swing frame (8) in a vehicle width direction, and the pipe fixing portion (49a) is arranged on an inside of the swing frame (8) in the vehicle width direction. [3] Saddle-seat vehicle according to claim 1 or 2, wherein the brake line (44) is laid higher than a pivot shaft (8a) of the swing arm (12). [4] Saddle-seat vehicle according to one of claims 1 to 3, comprising a drive chain (26) designed to transmit power from the primary drive (E) to the rear wheel (11), wherein the brake line (44) is installed higher than the drive chain (26). [5] Saddle-seat vehicle according to claim 4, comprising: a rear shock absorber (13) designed to dampen swinging of the swing arm (12); and a seat (19) on which a driver sits, wherein the line fastening section (49a) is arranged behind the primary drive (E), in front of the rear shock absorber (13), above the drive chain (26) and below the seat (19). [6] A saddle seat vehicle according to any one of claims 1 to 5, wherein the wire fixing portion (49a) and the brake modulator (51) are arranged at positions where the heights thereof in a vehicle up / down direction overlap with each other. [7] Saddle-seat vehicle according to one of claims 1 to 6, comprising a fairing member (55) configured to hold the brake modulator (51) while the brake modulator (51) is covered by one side of a prime mover (E), and which is held by the vehicle body frame (5). [8] Saddle seat vehicle according to one of claims 1 to 7, wherein the line fixing portion (49a) is arranged behind the pivot shaft (8a) of the swing arm (12).

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